+++ /dev/null
-From 8edd8c6dbdb6a5288c7116ea6e9dc59705b15a6a Mon Sep 17 00:00:00 2001
-From: popcornmix <popcornmix@gmail.com>
-Date: Tue, 2 Jul 2013 23:42:01 +0100
-Subject: [PATCH 005/196] bcm2708 vchiq driver
-
-Signed-off-by: popcornmix <popcornmix@gmail.com>
----
- drivers/misc/Kconfig | 2 +
- drivers/misc/Makefile | 1 +
- drivers/misc/vc04_services/Kconfig | 10 +
- drivers/misc/vc04_services/Makefile | 18 +
- .../interface/vchi/connections/connection.h | 328 ++
- .../interface/vchi/message_drivers/message.h | 204 ++
- drivers/misc/vc04_services/interface/vchi/vchi.h | 373 ++
- .../misc/vc04_services/interface/vchi/vchi_cfg.h | 224 ++
- .../interface/vchi/vchi_cfg_internal.h | 71 +
- .../vc04_services/interface/vchi/vchi_common.h | 163 +
- .../misc/vc04_services/interface/vchi/vchi_mh.h | 42 +
- .../misc/vc04_services/interface/vchiq_arm/vchiq.h | 41 +
- .../vc04_services/interface/vchiq_arm/vchiq_2835.h | 42 +
- .../interface/vchiq_arm/vchiq_2835_arm.c | 538 +++
- .../vc04_services/interface/vchiq_arm/vchiq_arm.c | 2813 ++++++++++++++
- .../vc04_services/interface/vchiq_arm/vchiq_arm.h | 212 ++
- .../interface/vchiq_arm/vchiq_build_info.h | 37 +
- .../vc04_services/interface/vchiq_arm/vchiq_cfg.h | 60 +
- .../interface/vchiq_arm/vchiq_connected.c | 119 +
- .../interface/vchiq_arm/vchiq_connected.h | 51 +
- .../vc04_services/interface/vchiq_arm/vchiq_core.c | 3824 ++++++++++++++++++++
- .../vc04_services/interface/vchiq_arm/vchiq_core.h | 706 ++++
- .../interface/vchiq_arm/vchiq_genversion | 89 +
- .../vc04_services/interface/vchiq_arm/vchiq_if.h | 188 +
- .../interface/vchiq_arm/vchiq_ioctl.h | 129 +
- .../interface/vchiq_arm/vchiq_kern_lib.c | 456 +++
- .../interface/vchiq_arm/vchiq_memdrv.h | 71 +
- .../interface/vchiq_arm/vchiq_pagelist.h | 58 +
- .../vc04_services/interface/vchiq_arm/vchiq_proc.c | 254 ++
- .../vc04_services/interface/vchiq_arm/vchiq_shim.c | 815 +++++
- .../vc04_services/interface/vchiq_arm/vchiq_util.c | 151 +
- .../vc04_services/interface/vchiq_arm/vchiq_util.h | 82 +
- .../interface/vchiq_arm/vchiq_version.c | 59 +
- 33 files changed, 12231 insertions(+)
- create mode 100644 drivers/misc/vc04_services/Kconfig
- create mode 100644 drivers/misc/vc04_services/Makefile
- create mode 100644 drivers/misc/vc04_services/interface/vchi/connections/connection.h
- create mode 100644 drivers/misc/vc04_services/interface/vchi/message_drivers/message.h
- create mode 100644 drivers/misc/vc04_services/interface/vchi/vchi.h
- create mode 100644 drivers/misc/vc04_services/interface/vchi/vchi_cfg.h
- create mode 100644 drivers/misc/vc04_services/interface/vchi/vchi_cfg_internal.h
- create mode 100644 drivers/misc/vc04_services/interface/vchi/vchi_common.h
- create mode 100644 drivers/misc/vc04_services/interface/vchi/vchi_mh.h
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq.h
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835.h
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.c
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.h
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_build_info.h
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_cfg.h
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.c
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.h
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.c
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.h
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_genversion
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_if.h
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_ioctl.h
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_kern_lib.c
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_memdrv.h
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_pagelist.h
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_proc.c
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_shim.c
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.c
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.h
- create mode 100644 drivers/misc/vc04_services/interface/vchiq_arm/vchiq_version.c
-
-diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
-index c002d86..84d3100 100644
---- a/drivers/misc/Kconfig
-+++ b/drivers/misc/Kconfig
-@@ -536,4 +536,6 @@ source "drivers/misc/carma/Kconfig"
- source "drivers/misc/altera-stapl/Kconfig"
- source "drivers/misc/mei/Kconfig"
- source "drivers/misc/vmw_vmci/Kconfig"
-+source "drivers/misc/vc04_services/Kconfig"
- endmenu
-+
-diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
-index c235d5b..d72aaf2 100644
---- a/drivers/misc/Makefile
-+++ b/drivers/misc/Makefile
-@@ -53,3 +53,4 @@ obj-$(CONFIG_INTEL_MEI) += mei/
- obj-$(CONFIG_VMWARE_VMCI) += vmw_vmci/
- obj-$(CONFIG_LATTICE_ECP3_CONFIG) += lattice-ecp3-config.o
- obj-$(CONFIG_SRAM) += sram.o
-+obj-y += vc04_services/
-diff --git a/drivers/misc/vc04_services/Kconfig b/drivers/misc/vc04_services/Kconfig
-new file mode 100644
-index 0000000..b48a3f3
---- /dev/null
-+++ b/drivers/misc/vc04_services/Kconfig
-@@ -0,0 +1,10 @@
-+config BCM2708_VCHIQ
-+ tristate "Videocore VCHIQ"
-+ depends on MACH_BCM2708
-+ default y
-+ help
-+ Kernel to VideoCore communication interface for the
-+ BCM2708 family of products.
-+ Defaults to Y when the Broadcom Videocore services
-+ are included in the build, N otherwise.
-+
-diff --git a/drivers/misc/vc04_services/Makefile b/drivers/misc/vc04_services/Makefile
-new file mode 100644
-index 0000000..1aeb20a
---- /dev/null
-+++ b/drivers/misc/vc04_services/Makefile
-@@ -0,0 +1,18 @@
-+ifeq ($(CONFIG_MACH_BCM2708),y)
-+
-+obj-$(CONFIG_BCM2708_VCHIQ) += vchiq.o
-+
-+vchiq-objs := \
-+ interface/vchiq_arm/vchiq_core.o \
-+ interface/vchiq_arm/vchiq_arm.o \
-+ interface/vchiq_arm/vchiq_kern_lib.o \
-+ interface/vchiq_arm/vchiq_2835_arm.o \
-+ interface/vchiq_arm/vchiq_proc.o \
-+ interface/vchiq_arm/vchiq_shim.o \
-+ interface/vchiq_arm/vchiq_util.o \
-+ interface/vchiq_arm/vchiq_connected.o \
-+
-+EXTRA_CFLAGS += -DVCOS_VERIFY_BKPTS=1 -Idrivers/misc/vc04_services -DUSE_VCHIQ_ARM -D__VCCOREVER__=0x04000000
-+
-+endif
-+
-diff --git a/drivers/misc/vc04_services/interface/vchi/connections/connection.h b/drivers/misc/vc04_services/interface/vchi/connections/connection.h
-new file mode 100644
-index 0000000..fef6ac3
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchi/connections/connection.h
-@@ -0,0 +1,328 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef CONNECTION_H_
-+#define CONNECTION_H_
-+
-+#include <linux/kernel.h>
-+#include <linux/types.h>
-+#include <linux/semaphore.h>
-+
-+#include "interface/vchi/vchi_cfg_internal.h"
-+#include "interface/vchi/vchi_common.h"
-+#include "interface/vchi/message_drivers/message.h"
-+
-+/******************************************************************************
-+ Global defs
-+ *****************************************************************************/
-+
-+// Opaque handle for a connection / service pair
-+typedef struct opaque_vchi_connection_connected_service_handle_t *VCHI_CONNECTION_SERVICE_HANDLE_T;
-+
-+// opaque handle to the connection state information
-+typedef struct opaque_vchi_connection_info_t VCHI_CONNECTION_STATE_T;
-+
-+typedef struct vchi_connection_t VCHI_CONNECTION_T;
-+
-+
-+/******************************************************************************
-+ API
-+ *****************************************************************************/
-+
-+// Routine to init a connection with a particular low level driver
-+typedef VCHI_CONNECTION_STATE_T * (*VCHI_CONNECTION_INIT_T)( struct vchi_connection_t * connection,
-+ const VCHI_MESSAGE_DRIVER_T * driver );
-+
-+// Routine to control CRC enabling at a connection level
-+typedef int32_t (*VCHI_CONNECTION_CRC_CONTROL_T)( VCHI_CONNECTION_STATE_T *state_handle,
-+ VCHI_CRC_CONTROL_T control );
-+
-+// Routine to create a service
-+typedef int32_t (*VCHI_CONNECTION_SERVICE_CONNECT_T)( VCHI_CONNECTION_STATE_T *state_handle,
-+ int32_t service_id,
-+ uint32_t rx_fifo_size,
-+ uint32_t tx_fifo_size,
-+ int server,
-+ VCHI_CALLBACK_T callback,
-+ void *callback_param,
-+ int32_t want_crc,
-+ int32_t want_unaligned_bulk_rx,
-+ int32_t want_unaligned_bulk_tx,
-+ VCHI_CONNECTION_SERVICE_HANDLE_T *service_handle );
-+
-+// Routine to close a service
-+typedef int32_t (*VCHI_CONNECTION_SERVICE_DISCONNECT_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle );
-+
-+// Routine to queue a message
-+typedef int32_t (*VCHI_CONNECTION_SERVICE_QUEUE_MESSAGE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
-+ const void *data,
-+ uint32_t data_size,
-+ VCHI_FLAGS_T flags,
-+ void *msg_handle );
-+
-+// scatter-gather (vector) message queueing
-+typedef int32_t (*VCHI_CONNECTION_SERVICE_QUEUE_MESSAGEV_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
-+ VCHI_MSG_VECTOR_T *vector,
-+ uint32_t count,
-+ VCHI_FLAGS_T flags,
-+ void *msg_handle );
-+
-+// Routine to dequeue a message
-+typedef int32_t (*VCHI_CONNECTION_SERVICE_DEQUEUE_MESSAGE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
-+ void *data,
-+ uint32_t max_data_size_to_read,
-+ uint32_t *actual_msg_size,
-+ VCHI_FLAGS_T flags );
-+
-+// Routine to peek at a message
-+typedef int32_t (*VCHI_CONNECTION_SERVICE_PEEK_MESSAGE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
-+ void **data,
-+ uint32_t *msg_size,
-+ VCHI_FLAGS_T flags );
-+
-+// Routine to hold a message
-+typedef int32_t (*VCHI_CONNECTION_SERVICE_HOLD_MESSAGE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
-+ void **data,
-+ uint32_t *msg_size,
-+ VCHI_FLAGS_T flags,
-+ void **message_handle );
-+
-+// Routine to initialise a received message iterator
-+typedef int32_t (*VCHI_CONNECTION_SERVICE_LOOKAHEAD_MESSAGE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
-+ VCHI_MSG_ITER_T *iter,
-+ VCHI_FLAGS_T flags );
-+
-+// Routine to release a held message
-+typedef int32_t (*VCHI_CONNECTION_HELD_MSG_RELEASE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
-+ void *message_handle );
-+
-+// Routine to get info on a held message
-+typedef int32_t (*VCHI_CONNECTION_HELD_MSG_INFO_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
-+ void *message_handle,
-+ void **data,
-+ int32_t *msg_size,
-+ uint32_t *tx_timestamp,
-+ uint32_t *rx_timestamp );
-+
-+// Routine to check whether the iterator has a next message
-+typedef int32_t (*VCHI_CONNECTION_MSG_ITER_HAS_NEXT_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service,
-+ const VCHI_MSG_ITER_T *iter );
-+
-+// Routine to advance the iterator
-+typedef int32_t (*VCHI_CONNECTION_MSG_ITER_NEXT_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service,
-+ VCHI_MSG_ITER_T *iter,
-+ void **data,
-+ uint32_t *msg_size );
-+
-+// Routine to remove the last message returned by the iterator
-+typedef int32_t (*VCHI_CONNECTION_MSG_ITER_REMOVE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service,
-+ VCHI_MSG_ITER_T *iter );
-+
-+// Routine to hold the last message returned by the iterator
-+typedef int32_t (*VCHI_CONNECTION_MSG_ITER_HOLD_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service,
-+ VCHI_MSG_ITER_T *iter,
-+ void **msg_handle );
-+
-+// Routine to transmit bulk data
-+typedef int32_t (*VCHI_CONNECTION_BULK_QUEUE_TRANSMIT_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
-+ const void *data_src,
-+ uint32_t data_size,
-+ VCHI_FLAGS_T flags,
-+ void *bulk_handle );
-+
-+// Routine to receive data
-+typedef int32_t (*VCHI_CONNECTION_BULK_QUEUE_RECEIVE_T)( VCHI_CONNECTION_SERVICE_HANDLE_T service_handle,
-+ void *data_dst,
-+ uint32_t data_size,
-+ VCHI_FLAGS_T flags,
-+ void *bulk_handle );
-+
-+// Routine to report if a server is available
-+typedef int32_t (*VCHI_CONNECTION_SERVER_PRESENT)( VCHI_CONNECTION_STATE_T *state, int32_t service_id, int32_t peer_flags );
-+
-+// Routine to report the number of RX slots available
-+typedef int (*VCHI_CONNECTION_RX_SLOTS_AVAILABLE)( const VCHI_CONNECTION_STATE_T *state );
-+
-+// Routine to report the RX slot size
-+typedef uint32_t (*VCHI_CONNECTION_RX_SLOT_SIZE)( const VCHI_CONNECTION_STATE_T *state );
-+
-+// Callback to indicate that the other side has added a buffer to the rx bulk DMA FIFO
-+typedef void (*VCHI_CONNECTION_RX_BULK_BUFFER_ADDED)(VCHI_CONNECTION_STATE_T *state,
-+ int32_t service,
-+ uint32_t length,
-+ MESSAGE_TX_CHANNEL_T channel,
-+ uint32_t channel_params,
-+ uint32_t data_length,
-+ uint32_t data_offset);
-+
-+// Callback to inform a service that a Xon or Xoff message has been received
-+typedef void (*VCHI_CONNECTION_FLOW_CONTROL)(VCHI_CONNECTION_STATE_T *state, int32_t service_id, int32_t xoff);
-+
-+// Callback to inform a service that a server available reply message has been received
-+typedef void (*VCHI_CONNECTION_SERVER_AVAILABLE_REPLY)(VCHI_CONNECTION_STATE_T *state, int32_t service_id, uint32_t flags);
-+
-+// Callback to indicate that bulk auxiliary messages have arrived
-+typedef void (*VCHI_CONNECTION_BULK_AUX_RECEIVED)(VCHI_CONNECTION_STATE_T *state);
-+
-+// Callback to indicate that bulk auxiliary messages have arrived
-+typedef void (*VCHI_CONNECTION_BULK_AUX_TRANSMITTED)(VCHI_CONNECTION_STATE_T *state, void *handle);
-+
-+// Callback with all the connection info you require
-+typedef void (*VCHI_CONNECTION_INFO)(VCHI_CONNECTION_STATE_T *state, uint32_t protocol_version, uint32_t slot_size, uint32_t num_slots, uint32_t min_bulk_size);
-+
-+// Callback to inform of a disconnect
-+typedef void (*VCHI_CONNECTION_DISCONNECT)(VCHI_CONNECTION_STATE_T *state, uint32_t flags);
-+
-+// Callback to inform of a power control request
-+typedef void (*VCHI_CONNECTION_POWER_CONTROL)(VCHI_CONNECTION_STATE_T *state, MESSAGE_TX_CHANNEL_T channel, int32_t enable);
-+
-+// allocate memory suitably aligned for this connection
-+typedef void * (*VCHI_BUFFER_ALLOCATE)(VCHI_CONNECTION_SERVICE_HANDLE_T service_handle, uint32_t * length);
-+
-+// free memory allocated by buffer_allocate
-+typedef void (*VCHI_BUFFER_FREE)(VCHI_CONNECTION_SERVICE_HANDLE_T service_handle, void * address);
-+
-+
-+/******************************************************************************
-+ System driver struct
-+ *****************************************************************************/
-+
-+struct opaque_vchi_connection_api_t
-+{
-+ // Routine to init the connection
-+ VCHI_CONNECTION_INIT_T init;
-+
-+ // Connection-level CRC control
-+ VCHI_CONNECTION_CRC_CONTROL_T crc_control;
-+
-+ // Routine to connect to or create service
-+ VCHI_CONNECTION_SERVICE_CONNECT_T service_connect;
-+
-+ // Routine to disconnect from a service
-+ VCHI_CONNECTION_SERVICE_DISCONNECT_T service_disconnect;
-+
-+ // Routine to queue a message
-+ VCHI_CONNECTION_SERVICE_QUEUE_MESSAGE_T service_queue_msg;
-+
-+ // scatter-gather (vector) message queue
-+ VCHI_CONNECTION_SERVICE_QUEUE_MESSAGEV_T service_queue_msgv;
-+
-+ // Routine to dequeue a message
-+ VCHI_CONNECTION_SERVICE_DEQUEUE_MESSAGE_T service_dequeue_msg;
-+
-+ // Routine to peek at a message
-+ VCHI_CONNECTION_SERVICE_PEEK_MESSAGE_T service_peek_msg;
-+
-+ // Routine to hold a message
-+ VCHI_CONNECTION_SERVICE_HOLD_MESSAGE_T service_hold_msg;
-+
-+ // Routine to initialise a received message iterator
-+ VCHI_CONNECTION_SERVICE_LOOKAHEAD_MESSAGE_T service_look_ahead_msg;
-+
-+ // Routine to release a message
-+ VCHI_CONNECTION_HELD_MSG_RELEASE_T held_msg_release;
-+
-+ // Routine to get information on a held message
-+ VCHI_CONNECTION_HELD_MSG_INFO_T held_msg_info;
-+
-+ // Routine to check for next message on iterator
-+ VCHI_CONNECTION_MSG_ITER_HAS_NEXT_T msg_iter_has_next;
-+
-+ // Routine to get next message on iterator
-+ VCHI_CONNECTION_MSG_ITER_NEXT_T msg_iter_next;
-+
-+ // Routine to remove the last message returned by iterator
-+ VCHI_CONNECTION_MSG_ITER_REMOVE_T msg_iter_remove;
-+
-+ // Routine to hold the last message returned by iterator
-+ VCHI_CONNECTION_MSG_ITER_HOLD_T msg_iter_hold;
-+
-+ // Routine to transmit bulk data
-+ VCHI_CONNECTION_BULK_QUEUE_TRANSMIT_T bulk_queue_transmit;
-+
-+ // Routine to receive data
-+ VCHI_CONNECTION_BULK_QUEUE_RECEIVE_T bulk_queue_receive;
-+
-+ // Routine to report the available servers
-+ VCHI_CONNECTION_SERVER_PRESENT server_present;
-+
-+ // Routine to report the number of RX slots available
-+ VCHI_CONNECTION_RX_SLOTS_AVAILABLE connection_rx_slots_available;
-+
-+ // Routine to report the RX slot size
-+ VCHI_CONNECTION_RX_SLOT_SIZE connection_rx_slot_size;
-+
-+ // Callback to indicate that the other side has added a buffer to the rx bulk DMA FIFO
-+ VCHI_CONNECTION_RX_BULK_BUFFER_ADDED rx_bulk_buffer_added;
-+
-+ // Callback to inform a service that a Xon or Xoff message has been received
-+ VCHI_CONNECTION_FLOW_CONTROL flow_control;
-+
-+ // Callback to inform a service that a server available reply message has been received
-+ VCHI_CONNECTION_SERVER_AVAILABLE_REPLY server_available_reply;
-+
-+ // Callback to indicate that bulk auxiliary messages have arrived
-+ VCHI_CONNECTION_BULK_AUX_RECEIVED bulk_aux_received;
-+
-+ // Callback to indicate that a bulk auxiliary message has been transmitted
-+ VCHI_CONNECTION_BULK_AUX_TRANSMITTED bulk_aux_transmitted;
-+
-+ // Callback to provide information about the connection
-+ VCHI_CONNECTION_INFO connection_info;
-+
-+ // Callback to notify that peer has requested disconnect
-+ VCHI_CONNECTION_DISCONNECT disconnect;
-+
-+ // Callback to notify that peer has requested power change
-+ VCHI_CONNECTION_POWER_CONTROL power_control;
-+
-+ // allocate memory suitably aligned for this connection
-+ VCHI_BUFFER_ALLOCATE buffer_allocate;
-+
-+ // free memory allocated by buffer_allocate
-+ VCHI_BUFFER_FREE buffer_free;
-+
-+};
-+
-+struct vchi_connection_t {
-+ const VCHI_CONNECTION_API_T *api;
-+ VCHI_CONNECTION_STATE_T *state;
-+#ifdef VCHI_COARSE_LOCKING
-+ struct semaphore sem;
-+#endif
-+};
-+
-+
-+#endif /* CONNECTION_H_ */
-+
-+/****************************** End of file **********************************/
-diff --git a/drivers/misc/vc04_services/interface/vchi/message_drivers/message.h b/drivers/misc/vc04_services/interface/vchi/message_drivers/message.h
-new file mode 100644
-index 0000000..8b3f767
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchi/message_drivers/message.h
-@@ -0,0 +1,204 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef _VCHI_MESSAGE_H_
-+#define _VCHI_MESSAGE_H_
-+
-+#include <linux/kernel.h>
-+#include <linux/types.h>
-+#include <linux/semaphore.h>
-+
-+#include "interface/vchi/vchi_cfg_internal.h"
-+#include "interface/vchi/vchi_common.h"
-+
-+
-+typedef enum message_event_type {
-+ MESSAGE_EVENT_NONE,
-+ MESSAGE_EVENT_NOP,
-+ MESSAGE_EVENT_MESSAGE,
-+ MESSAGE_EVENT_SLOT_COMPLETE,
-+ MESSAGE_EVENT_RX_BULK_PAUSED,
-+ MESSAGE_EVENT_RX_BULK_COMPLETE,
-+ MESSAGE_EVENT_TX_COMPLETE,
-+ MESSAGE_EVENT_MSG_DISCARDED
-+} MESSAGE_EVENT_TYPE_T;
-+
-+typedef enum vchi_msg_flags
-+{
-+ VCHI_MSG_FLAGS_NONE = 0x0,
-+ VCHI_MSG_FLAGS_TERMINATE_DMA = 0x1
-+} VCHI_MSG_FLAGS_T;
-+
-+typedef enum message_tx_channel
-+{
-+ MESSAGE_TX_CHANNEL_MESSAGE = 0,
-+ MESSAGE_TX_CHANNEL_BULK = 1 // drivers may provide multiple bulk channels, from 1 upwards
-+} MESSAGE_TX_CHANNEL_T;
-+
-+// Macros used for cycling through bulk channels
-+#define MESSAGE_TX_CHANNEL_BULK_PREV(c) (MESSAGE_TX_CHANNEL_BULK+((c)-MESSAGE_TX_CHANNEL_BULK+VCHI_MAX_BULK_TX_CHANNELS_PER_CONNECTION-1)%VCHI_MAX_BULK_TX_CHANNELS_PER_CONNECTION)
-+#define MESSAGE_TX_CHANNEL_BULK_NEXT(c) (MESSAGE_TX_CHANNEL_BULK+((c)-MESSAGE_TX_CHANNEL_BULK+1)%VCHI_MAX_BULK_TX_CHANNELS_PER_CONNECTION)
-+
-+typedef enum message_rx_channel
-+{
-+ MESSAGE_RX_CHANNEL_MESSAGE = 0,
-+ MESSAGE_RX_CHANNEL_BULK = 1 // drivers may provide multiple bulk channels, from 1 upwards
-+} MESSAGE_RX_CHANNEL_T;
-+
-+// Message receive slot information
-+typedef struct rx_msg_slot_info {
-+
-+ struct rx_msg_slot_info *next;
-+ //struct slot_info *prev;
-+#if !defined VCHI_COARSE_LOCKING
-+ struct semaphore sem;
-+#endif
-+
-+ uint8_t *addr; // base address of slot
-+ uint32_t len; // length of slot in bytes
-+
-+ uint32_t write_ptr; // hardware causes this to advance
-+ uint32_t read_ptr; // this module does the reading
-+ int active; // is this slot in the hardware dma fifo?
-+ uint32_t msgs_parsed; // count how many messages are in this slot
-+ uint32_t msgs_released; // how many messages have been released
-+ void *state; // connection state information
-+ uint8_t ref_count[VCHI_MAX_SERVICES_PER_CONNECTION]; // reference count for slots held by services
-+} RX_MSG_SLOTINFO_T;
-+
-+// The message driver no longer needs to know about the fields of RX_BULK_SLOTINFO_T - sort this out.
-+// In particular, it mustn't use addr and len - they're the client buffer, but the message
-+// driver will be tasked with sending the aligned core section.
-+typedef struct rx_bulk_slotinfo_t {
-+ struct rx_bulk_slotinfo_t *next;
-+
-+ struct semaphore *blocking;
-+
-+ // needed by DMA
-+ void *addr;
-+ uint32_t len;
-+
-+ // needed for the callback
-+ void *service;
-+ void *handle;
-+ VCHI_FLAGS_T flags;
-+} RX_BULK_SLOTINFO_T;
-+
-+
-+/* ----------------------------------------------------------------------
-+ * each connection driver will have a pool of the following struct.
-+ *
-+ * the pool will be managed by vchi_qman_*
-+ * this means there will be multiple queues (single linked lists)
-+ * a given struct message_info will be on exactly one of these queues
-+ * at any one time
-+ * -------------------------------------------------------------------- */
-+typedef struct rx_message_info {
-+
-+ struct message_info *next;
-+ //struct message_info *prev;
-+
-+ uint8_t *addr;
-+ uint32_t len;
-+ RX_MSG_SLOTINFO_T *slot; // points to whichever slot contains this message
-+ uint32_t tx_timestamp;
-+ uint32_t rx_timestamp;
-+
-+} RX_MESSAGE_INFO_T;
-+
-+typedef struct {
-+ MESSAGE_EVENT_TYPE_T type;
-+
-+ struct {
-+ // for messages
-+ void *addr; // address of message
-+ uint16_t slot_delta; // whether this message indicated slot delta
-+ uint32_t len; // length of message
-+ RX_MSG_SLOTINFO_T *slot; // slot this message is in
-+ int32_t service; // service id this message is destined for
-+ uint32_t tx_timestamp; // timestamp from the header
-+ uint32_t rx_timestamp; // timestamp when we parsed it
-+ } message;
-+
-+ // FIXME: cleanup slot reporting...
-+ RX_MSG_SLOTINFO_T *rx_msg;
-+ RX_BULK_SLOTINFO_T *rx_bulk;
-+ void *tx_handle;
-+ MESSAGE_TX_CHANNEL_T tx_channel;
-+
-+} MESSAGE_EVENT_T;
-+
-+
-+// callbacks
-+typedef void VCHI_MESSAGE_DRIVER_EVENT_CALLBACK_T( void *state );
-+
-+typedef struct {
-+ VCHI_MESSAGE_DRIVER_EVENT_CALLBACK_T *event_callback;
-+} VCHI_MESSAGE_DRIVER_OPEN_T;
-+
-+
-+// handle to this instance of message driver (as returned by ->open)
-+typedef struct opaque_mhandle_t *VCHI_MDRIVER_HANDLE_T;
-+
-+struct opaque_vchi_message_driver_t {
-+ VCHI_MDRIVER_HANDLE_T *(*open)( VCHI_MESSAGE_DRIVER_OPEN_T *params, void *state );
-+ int32_t (*suspending)( VCHI_MDRIVER_HANDLE_T *handle );
-+ int32_t (*resumed)( VCHI_MDRIVER_HANDLE_T *handle );
-+ int32_t (*power_control)( VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T, int32_t enable );
-+ int32_t (*add_msg_rx_slot)( VCHI_MDRIVER_HANDLE_T *handle, RX_MSG_SLOTINFO_T *slot ); // rx message
-+ int32_t (*add_bulk_rx)( VCHI_MDRIVER_HANDLE_T *handle, void *data, uint32_t len, RX_BULK_SLOTINFO_T *slot ); // rx data (bulk)
-+ int32_t (*send)( VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T channel, const void *data, uint32_t len, VCHI_MSG_FLAGS_T flags, void *send_handle ); // tx (message & bulk)
-+ void (*next_event)( VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_EVENT_T *event ); // get the next event from message_driver
-+ int32_t (*enable)( VCHI_MDRIVER_HANDLE_T *handle );
-+ int32_t (*form_message)( VCHI_MDRIVER_HANDLE_T *handle, int32_t service_id, VCHI_MSG_VECTOR_T *vector, uint32_t count, void
-+ *address, uint32_t length_avail, uint32_t max_total_length, int32_t pad_to_fill, int32_t allow_partial );
-+
-+ int32_t (*update_message)( VCHI_MDRIVER_HANDLE_T *handle, void *dest, int16_t *slot_count );
-+ int32_t (*buffer_aligned)( VCHI_MDRIVER_HANDLE_T *handle, int tx, int uncached, const void *address, const uint32_t length );
-+ void * (*allocate_buffer)( VCHI_MDRIVER_HANDLE_T *handle, uint32_t *length );
-+ void (*free_buffer)( VCHI_MDRIVER_HANDLE_T *handle, void *address );
-+ int (*rx_slot_size)( VCHI_MDRIVER_HANDLE_T *handle, int msg_size );
-+ int (*tx_slot_size)( VCHI_MDRIVER_HANDLE_T *handle, int msg_size );
-+
-+ int32_t (*tx_supports_terminate)( const VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T channel );
-+ uint32_t (*tx_bulk_chunk_size)( const VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T channel );
-+ int (*tx_alignment)( const VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T channel );
-+ int (*rx_alignment)( const VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_RX_CHANNEL_T channel );
-+ void (*form_bulk_aux)( VCHI_MDRIVER_HANDLE_T *handle, MESSAGE_TX_CHANNEL_T channel, const void *data, uint32_t len, uint32_t chunk_size, const void **aux_data, int32_t *aux_len );
-+ void (*debug)( VCHI_MDRIVER_HANDLE_T *handle );
-+};
-+
-+
-+#endif // _VCHI_MESSAGE_H_
-+
-+/****************************** End of file ***********************************/
-diff --git a/drivers/misc/vc04_services/interface/vchi/vchi.h b/drivers/misc/vc04_services/interface/vchi/vchi.h
-new file mode 100644
-index 0000000..cee5291
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchi/vchi.h
-@@ -0,0 +1,373 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef VCHI_H_
-+#define VCHI_H_
-+
-+#include "interface/vchi/vchi_cfg.h"
-+#include "interface/vchi/vchi_common.h"
-+#include "interface/vchi/connections/connection.h"
-+#include "vchi_mh.h"
-+
-+
-+/******************************************************************************
-+ Global defs
-+ *****************************************************************************/
-+
-+#define VCHI_BULK_ROUND_UP(x) ((((unsigned long)(x))+VCHI_BULK_ALIGN-1) & ~(VCHI_BULK_ALIGN-1))
-+#define VCHI_BULK_ROUND_DOWN(x) (((unsigned long)(x)) & ~(VCHI_BULK_ALIGN-1))
-+#define VCHI_BULK_ALIGN_NBYTES(x) (VCHI_BULK_ALIGNED(x) ? 0 : (VCHI_BULK_ALIGN - ((unsigned long)(x) & (VCHI_BULK_ALIGN-1))))
-+
-+#ifdef USE_VCHIQ_ARM
-+#define VCHI_BULK_ALIGNED(x) 1
-+#else
-+#define VCHI_BULK_ALIGNED(x) (((unsigned long)(x) & (VCHI_BULK_ALIGN-1)) == 0)
-+#endif
-+
-+struct vchi_version {
-+ uint32_t version;
-+ uint32_t version_min;
-+};
-+#define VCHI_VERSION(v_) { v_, v_ }
-+#define VCHI_VERSION_EX(v_, m_) { v_, m_ }
-+
-+typedef enum
-+{
-+ VCHI_VEC_POINTER,
-+ VCHI_VEC_HANDLE,
-+ VCHI_VEC_LIST
-+} VCHI_MSG_VECTOR_TYPE_T;
-+
-+typedef struct vchi_msg_vector_ex {
-+
-+ VCHI_MSG_VECTOR_TYPE_T type;
-+ union
-+ {
-+ // a memory handle
-+ struct
-+ {
-+ VCHI_MEM_HANDLE_T handle;
-+ uint32_t offset;
-+ int32_t vec_len;
-+ } handle;
-+
-+ // an ordinary data pointer
-+ struct
-+ {
-+ const void *vec_base;
-+ int32_t vec_len;
-+ } ptr;
-+
-+ // a nested vector list
-+ struct
-+ {
-+ struct vchi_msg_vector_ex *vec;
-+ uint32_t vec_len;
-+ } list;
-+ } u;
-+} VCHI_MSG_VECTOR_EX_T;
-+
-+
-+// Construct an entry in a msg vector for a pointer (p) of length (l)
-+#define VCHI_VEC_POINTER(p,l) VCHI_VEC_POINTER, { { (VCHI_MEM_HANDLE_T)(p), (l) } }
-+
-+// Construct an entry in a msg vector for a message handle (h), starting at offset (o) of length (l)
-+#define VCHI_VEC_HANDLE(h,o,l) VCHI_VEC_HANDLE, { { (h), (o), (l) } }
-+
-+// Macros to manipulate 'FOURCC' values
-+#define MAKE_FOURCC(x) ((int32_t)( (x[0] << 24) | (x[1] << 16) | (x[2] << 8) | x[3] ))
-+#define FOURCC_TO_CHAR(x) (x >> 24) & 0xFF,(x >> 16) & 0xFF,(x >> 8) & 0xFF, x & 0xFF
-+
-+
-+// Opaque service information
-+struct opaque_vchi_service_t;
-+
-+// Descriptor for a held message. Allocated by client, initialised by vchi_msg_hold,
-+// vchi_msg_iter_hold or vchi_msg_iter_hold_next. Fields are for internal VCHI use only.
-+typedef struct
-+{
-+ struct opaque_vchi_service_t *service;
-+ void *message;
-+} VCHI_HELD_MSG_T;
-+
-+
-+
-+// structure used to provide the information needed to open a server or a client
-+typedef struct {
-+ struct vchi_version version;
-+ int32_t service_id;
-+ VCHI_CONNECTION_T *connection;
-+ uint32_t rx_fifo_size;
-+ uint32_t tx_fifo_size;
-+ VCHI_CALLBACK_T callback;
-+ void *callback_param;
-+ /* client intends to receive bulk transfers of
-+ odd lengths or into unaligned buffers */
-+ int32_t want_unaligned_bulk_rx;
-+ /* client intends to transmit bulk transfers of
-+ odd lengths or out of unaligned buffers */
-+ int32_t want_unaligned_bulk_tx;
-+ /* client wants to check CRCs on (bulk) xfers.
-+ Only needs to be set at 1 end - will do both directions. */
-+ int32_t want_crc;
-+} SERVICE_CREATION_T;
-+
-+// Opaque handle for a VCHI instance
-+typedef struct opaque_vchi_instance_handle_t *VCHI_INSTANCE_T;
-+
-+// Opaque handle for a server or client
-+typedef struct opaque_vchi_service_handle_t *VCHI_SERVICE_HANDLE_T;
-+
-+// Service registration & startup
-+typedef void (*VCHI_SERVICE_INIT)(VCHI_INSTANCE_T initialise_instance, VCHI_CONNECTION_T **connections, uint32_t num_connections);
-+
-+typedef struct service_info_tag {
-+ const char * const vll_filename; /* VLL to load to start this service. This is an empty string if VLL is "static" */
-+ VCHI_SERVICE_INIT init; /* Service initialisation function */
-+ void *vll_handle; /* VLL handle; NULL when unloaded or a "static VLL" in build */
-+} SERVICE_INFO_T;
-+
-+/******************************************************************************
-+ Global funcs - implementation is specific to which side you are on (local / remote)
-+ *****************************************************************************/
-+
-+#ifdef __cplusplus
-+extern "C" {
-+#endif
-+
-+extern /*@observer@*/ VCHI_CONNECTION_T * vchi_create_connection( const VCHI_CONNECTION_API_T * function_table,
-+ const VCHI_MESSAGE_DRIVER_T * low_level);
-+
-+
-+// Routine used to initialise the vchi on both local + remote connections
-+extern int32_t vchi_initialise( VCHI_INSTANCE_T *instance_handle );
-+
-+extern int32_t vchi_exit( void );
-+
-+extern int32_t vchi_connect( VCHI_CONNECTION_T **connections,
-+ const uint32_t num_connections,
-+ VCHI_INSTANCE_T instance_handle );
-+
-+//When this is called, ensure that all services have no data pending.
-+//Bulk transfers can remain 'queued'
-+extern int32_t vchi_disconnect( VCHI_INSTANCE_T instance_handle );
-+
-+// Global control over bulk CRC checking
-+extern int32_t vchi_crc_control( VCHI_CONNECTION_T *connection,
-+ VCHI_CRC_CONTROL_T control );
-+
-+// helper functions
-+extern void * vchi_allocate_buffer(VCHI_SERVICE_HANDLE_T handle, uint32_t *length);
-+extern void vchi_free_buffer(VCHI_SERVICE_HANDLE_T handle, void *address);
-+extern uint32_t vchi_current_time(VCHI_INSTANCE_T instance_handle);
-+
-+
-+/******************************************************************************
-+ Global service API
-+ *****************************************************************************/
-+// Routine to create a named service
-+extern int32_t vchi_service_create( VCHI_INSTANCE_T instance_handle,
-+ SERVICE_CREATION_T *setup,
-+ VCHI_SERVICE_HANDLE_T *handle );
-+
-+// Routine to destory a service
-+extern int32_t vchi_service_destroy( const VCHI_SERVICE_HANDLE_T handle );
-+
-+// Routine to open a named service
-+extern int32_t vchi_service_open( VCHI_INSTANCE_T instance_handle,
-+ SERVICE_CREATION_T *setup,
-+ VCHI_SERVICE_HANDLE_T *handle);
-+
-+extern int32_t vchi_get_peer_version( const VCHI_SERVICE_HANDLE_T handle,
-+ short *peer_version );
-+
-+// Routine to close a named service
-+extern int32_t vchi_service_close( const VCHI_SERVICE_HANDLE_T handle );
-+
-+// Routine to increment ref count on a named service
-+extern int32_t vchi_service_use( const VCHI_SERVICE_HANDLE_T handle );
-+
-+// Routine to decrement ref count on a named service
-+extern int32_t vchi_service_release( const VCHI_SERVICE_HANDLE_T handle );
-+
-+// Routine to send a message accross a service
-+extern int32_t vchi_msg_queue( VCHI_SERVICE_HANDLE_T handle,
-+ const void *data,
-+ uint32_t data_size,
-+ VCHI_FLAGS_T flags,
-+ void *msg_handle );
-+
-+// scatter-gather (vector) and send message
-+int32_t vchi_msg_queuev_ex( VCHI_SERVICE_HANDLE_T handle,
-+ VCHI_MSG_VECTOR_EX_T *vector,
-+ uint32_t count,
-+ VCHI_FLAGS_T flags,
-+ void *msg_handle );
-+
-+// legacy scatter-gather (vector) and send message, only handles pointers
-+int32_t vchi_msg_queuev( VCHI_SERVICE_HANDLE_T handle,
-+ VCHI_MSG_VECTOR_T *vector,
-+ uint32_t count,
-+ VCHI_FLAGS_T flags,
-+ void *msg_handle );
-+
-+// Routine to receive a msg from a service
-+// Dequeue is equivalent to hold, copy into client buffer, release
-+extern int32_t vchi_msg_dequeue( VCHI_SERVICE_HANDLE_T handle,
-+ void *data,
-+ uint32_t max_data_size_to_read,
-+ uint32_t *actual_msg_size,
-+ VCHI_FLAGS_T flags );
-+
-+// Routine to look at a message in place.
-+// The message is not dequeued, so a subsequent call to peek or dequeue
-+// will return the same message.
-+extern int32_t vchi_msg_peek( VCHI_SERVICE_HANDLE_T handle,
-+ void **data,
-+ uint32_t *msg_size,
-+ VCHI_FLAGS_T flags );
-+
-+// Routine to remove a message after it has been read in place with peek
-+// The first message on the queue is dequeued.
-+extern int32_t vchi_msg_remove( VCHI_SERVICE_HANDLE_T handle );
-+
-+// Routine to look at a message in place.
-+// The message is dequeued, so the caller is left holding it; the descriptor is
-+// filled in and must be released when the user has finished with the message.
-+extern int32_t vchi_msg_hold( VCHI_SERVICE_HANDLE_T handle,
-+ void **data, // } may be NULL, as info can be
-+ uint32_t *msg_size, // } obtained from HELD_MSG_T
-+ VCHI_FLAGS_T flags,
-+ VCHI_HELD_MSG_T *message_descriptor );
-+
-+// Initialise an iterator to look through messages in place
-+extern int32_t vchi_msg_look_ahead( VCHI_SERVICE_HANDLE_T handle,
-+ VCHI_MSG_ITER_T *iter,
-+ VCHI_FLAGS_T flags );
-+
-+/******************************************************************************
-+ Global service support API - operations on held messages and message iterators
-+ *****************************************************************************/
-+
-+// Routine to get the address of a held message
-+extern void *vchi_held_msg_ptr( const VCHI_HELD_MSG_T *message );
-+
-+// Routine to get the size of a held message
-+extern int32_t vchi_held_msg_size( const VCHI_HELD_MSG_T *message );
-+
-+// Routine to get the transmit timestamp as written into the header by the peer
-+extern uint32_t vchi_held_msg_tx_timestamp( const VCHI_HELD_MSG_T *message );
-+
-+// Routine to get the reception timestamp, written as we parsed the header
-+extern uint32_t vchi_held_msg_rx_timestamp( const VCHI_HELD_MSG_T *message );
-+
-+// Routine to release a held message after it has been processed
-+extern int32_t vchi_held_msg_release( VCHI_HELD_MSG_T *message );
-+
-+// Indicates whether the iterator has a next message.
-+extern int32_t vchi_msg_iter_has_next( const VCHI_MSG_ITER_T *iter );
-+
-+// Return the pointer and length for the next message and advance the iterator.
-+extern int32_t vchi_msg_iter_next( VCHI_MSG_ITER_T *iter,
-+ void **data,
-+ uint32_t *msg_size );
-+
-+// Remove the last message returned by vchi_msg_iter_next.
-+// Can only be called once after each call to vchi_msg_iter_next.
-+extern int32_t vchi_msg_iter_remove( VCHI_MSG_ITER_T *iter );
-+
-+// Hold the last message returned by vchi_msg_iter_next.
-+// Can only be called once after each call to vchi_msg_iter_next.
-+extern int32_t vchi_msg_iter_hold( VCHI_MSG_ITER_T *iter,
-+ VCHI_HELD_MSG_T *message );
-+
-+// Return information for the next message, and hold it, advancing the iterator.
-+extern int32_t vchi_msg_iter_hold_next( VCHI_MSG_ITER_T *iter,
-+ void **data, // } may be NULL
-+ uint32_t *msg_size, // }
-+ VCHI_HELD_MSG_T *message );
-+
-+
-+/******************************************************************************
-+ Global bulk API
-+ *****************************************************************************/
-+
-+// Routine to prepare interface for a transfer from the other side
-+extern int32_t vchi_bulk_queue_receive( VCHI_SERVICE_HANDLE_T handle,
-+ void *data_dst,
-+ uint32_t data_size,
-+ VCHI_FLAGS_T flags,
-+ void *transfer_handle );
-+
-+
-+// Prepare interface for a transfer from the other side into relocatable memory.
-+int32_t vchi_bulk_queue_receive_reloc( const VCHI_SERVICE_HANDLE_T handle,
-+ VCHI_MEM_HANDLE_T h_dst,
-+ uint32_t offset,
-+ uint32_t data_size,
-+ const VCHI_FLAGS_T flags,
-+ void * const bulk_handle );
-+
-+// Routine to queue up data ready for transfer to the other (once they have signalled they are ready)
-+extern int32_t vchi_bulk_queue_transmit( VCHI_SERVICE_HANDLE_T handle,
-+ const void *data_src,
-+ uint32_t data_size,
-+ VCHI_FLAGS_T flags,
-+ void *transfer_handle );
-+
-+
-+/******************************************************************************
-+ Configuration plumbing
-+ *****************************************************************************/
-+
-+// function prototypes for the different mid layers (the state info gives the different physical connections)
-+extern const VCHI_CONNECTION_API_T *single_get_func_table( void );
-+//extern const VCHI_CONNECTION_API_T *local_server_get_func_table( void );
-+//extern const VCHI_CONNECTION_API_T *local_client_get_func_table( void );
-+
-+// declare all message drivers here
-+const VCHI_MESSAGE_DRIVER_T *vchi_mphi_message_driver_func_table( void );
-+
-+#ifdef __cplusplus
-+}
-+#endif
-+
-+extern int32_t vchi_bulk_queue_transmit_reloc( VCHI_SERVICE_HANDLE_T handle,
-+ VCHI_MEM_HANDLE_T h_src,
-+ uint32_t offset,
-+ uint32_t data_size,
-+ VCHI_FLAGS_T flags,
-+ void *transfer_handle );
-+#endif /* VCHI_H_ */
-+
-+/****************************** End of file **********************************/
-diff --git a/drivers/misc/vc04_services/interface/vchi/vchi_cfg.h b/drivers/misc/vc04_services/interface/vchi/vchi_cfg.h
-new file mode 100644
-index 0000000..26bc2d3
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchi/vchi_cfg.h
-@@ -0,0 +1,224 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef VCHI_CFG_H_
-+#define VCHI_CFG_H_
-+
-+/****************************************************************************************
-+ * Defines in this first section are part of the VCHI API and may be examined by VCHI
-+ * services.
-+ ***************************************************************************************/
-+
-+/* Required alignment of base addresses for bulk transfer, if unaligned transfers are not enabled */
-+/* Really determined by the message driver, and should be available from a run-time call. */
-+#ifndef VCHI_BULK_ALIGN
-+# if __VCCOREVER__ >= 0x04000000
-+# define VCHI_BULK_ALIGN 32 // Allows for the need to do cache cleans
-+# else
-+# define VCHI_BULK_ALIGN 16
-+# endif
-+#endif
-+
-+/* Required length multiple for bulk transfers, if unaligned transfers are not enabled */
-+/* May be less than or greater than VCHI_BULK_ALIGN */
-+/* Really determined by the message driver, and should be available from a run-time call. */
-+#ifndef VCHI_BULK_GRANULARITY
-+# if __VCCOREVER__ >= 0x04000000
-+# define VCHI_BULK_GRANULARITY 32 // Allows for the need to do cache cleans
-+# else
-+# define VCHI_BULK_GRANULARITY 16
-+# endif
-+#endif
-+
-+/* The largest possible message to be queued with vchi_msg_queue. */
-+#ifndef VCHI_MAX_MSG_SIZE
-+# if defined VCHI_LOCAL_HOST_PORT
-+# define VCHI_MAX_MSG_SIZE 16384 // makes file transfers fast, but should they be using bulk?
-+# else
-+# define VCHI_MAX_MSG_SIZE 4096 // NOTE: THIS MUST BE LARGER THAN OR EQUAL TO THE SIZE OF THE KHRONOS MERGE BUFFER!!
-+# endif
-+#endif
-+
-+/******************************************************************************************
-+ * Defines below are system configuration options, and should not be used by VCHI services.
-+ *****************************************************************************************/
-+
-+/* How many connections can we support? A localhost implementation uses 2 connections,
-+ * 1 for host-app, 1 for VMCS, and these are hooked together by a loopback MPHI VCFW
-+ * driver. */
-+#ifndef VCHI_MAX_NUM_CONNECTIONS
-+# define VCHI_MAX_NUM_CONNECTIONS 3
-+#endif
-+
-+/* How many services can we open per connection? Extending this doesn't cost processing time, just a small
-+ * amount of static memory. */
-+#ifndef VCHI_MAX_SERVICES_PER_CONNECTION
-+# define VCHI_MAX_SERVICES_PER_CONNECTION 36
-+#endif
-+
-+/* Adjust if using a message driver that supports more logical TX channels */
-+#ifndef VCHI_MAX_BULK_TX_CHANNELS_PER_CONNECTION
-+# define VCHI_MAX_BULK_TX_CHANNELS_PER_CONNECTION 9 // 1 MPHI + 8 CCP2 logical channels
-+#endif
-+
-+/* Adjust if using a message driver that supports more logical RX channels */
-+#ifndef VCHI_MAX_BULK_RX_CHANNELS_PER_CONNECTION
-+# define VCHI_MAX_BULK_RX_CHANNELS_PER_CONNECTION 1 // 1 MPHI
-+#endif
-+
-+/* How many receive slots do we use. This times VCHI_MAX_MSG_SIZE gives the effective
-+ * receive queue space, less message headers. */
-+#ifndef VCHI_NUM_READ_SLOTS
-+# if defined(VCHI_LOCAL_HOST_PORT)
-+# define VCHI_NUM_READ_SLOTS 4
-+# else
-+# define VCHI_NUM_READ_SLOTS 48
-+# endif
-+#endif
-+
-+/* Do we utilise overrun facility for receive message slots? Can aid peer transmit
-+ * performance. Only define on VideoCore end, talking to host.
-+ */
-+//#define VCHI_MSG_RX_OVERRUN
-+
-+/* How many transmit slots do we use. Generally don't need many, as the hardware driver
-+ * underneath VCHI will usually have its own buffering. */
-+#ifndef VCHI_NUM_WRITE_SLOTS
-+# define VCHI_NUM_WRITE_SLOTS 4
-+#endif
-+
-+/* If a service has held or queued received messages in VCHI_XOFF_THRESHOLD or more slots,
-+ * then it's taking up too much buffer space, and the peer service will be told to stop
-+ * transmitting with an XOFF message. For this to be effective, the VCHI_NUM_READ_SLOTS
-+ * needs to be considerably bigger than VCHI_NUM_WRITE_SLOTS, or the transmit latency
-+ * is too high. */
-+#ifndef VCHI_XOFF_THRESHOLD
-+# define VCHI_XOFF_THRESHOLD (VCHI_NUM_READ_SLOTS / 2)
-+#endif
-+
-+/* After we've sent an XOFF, the peer will be told to resume transmission once the local
-+ * service has dequeued/released enough messages that it's now occupying
-+ * VCHI_XON_THRESHOLD slots or fewer. */
-+#ifndef VCHI_XON_THRESHOLD
-+# define VCHI_XON_THRESHOLD (VCHI_NUM_READ_SLOTS / 4)
-+#endif
-+
-+/* A size below which a bulk transfer omits the handshake completely and always goes
-+ * via the message channel, if bulk auxiliary is being sent on that service. (The user
-+ * can guarantee this by enabling unaligned transmits).
-+ * Not API. */
-+#ifndef VCHI_MIN_BULK_SIZE
-+# define VCHI_MIN_BULK_SIZE ( VCHI_MAX_MSG_SIZE / 2 < 4096 ? VCHI_MAX_MSG_SIZE / 2 : 4096 )
-+#endif
-+
-+/* Maximum size of bulk transmission chunks, for each interface type. A trade-off between
-+ * speed and latency; the smaller the chunk size the better change of messages and other
-+ * bulk transmissions getting in when big bulk transfers are happening. Set to 0 to not
-+ * break transmissions into chunks.
-+ */
-+#ifndef VCHI_MAX_BULK_CHUNK_SIZE_MPHI
-+# define VCHI_MAX_BULK_CHUNK_SIZE_MPHI (16 * 1024)
-+#endif
-+
-+/* NB Chunked CCP2 transmissions violate the letter of the CCP2 spec by using "JPEG8" mode
-+ * with multiple-line frames. Only use if the receiver can cope. */
-+#ifndef VCHI_MAX_BULK_CHUNK_SIZE_CCP2
-+# define VCHI_MAX_BULK_CHUNK_SIZE_CCP2 0
-+#endif
-+
-+/* How many TX messages can we have pending in our transmit slots. Once exhausted,
-+ * vchi_msg_queue will be blocked. */
-+#ifndef VCHI_TX_MSG_QUEUE_SIZE
-+# define VCHI_TX_MSG_QUEUE_SIZE 256
-+#endif
-+
-+/* How many RX messages can we have parsed in the receive slots. Once exhausted, parsing
-+ * will be suspended until older messages are dequeued/released. */
-+#ifndef VCHI_RX_MSG_QUEUE_SIZE
-+# define VCHI_RX_MSG_QUEUE_SIZE 256
-+#endif
-+
-+/* Really should be able to cope if we run out of received message descriptors, by
-+ * suspending parsing as the comment above says, but we don't. This sweeps the issue
-+ * under the carpet. */
-+#if VCHI_RX_MSG_QUEUE_SIZE < (VCHI_MAX_MSG_SIZE/16 + 1) * VCHI_NUM_READ_SLOTS
-+# undef VCHI_RX_MSG_QUEUE_SIZE
-+# define VCHI_RX_MSG_QUEUE_SIZE (VCHI_MAX_MSG_SIZE/16 + 1) * VCHI_NUM_READ_SLOTS
-+#endif
-+
-+/* How many bulk transmits can we have pending. Once exhausted, vchi_bulk_queue_transmit
-+ * will be blocked. */
-+#ifndef VCHI_TX_BULK_QUEUE_SIZE
-+# define VCHI_TX_BULK_QUEUE_SIZE 64
-+#endif
-+
-+/* How many bulk receives can we have pending. Once exhausted, vchi_bulk_queue_receive
-+ * will be blocked. */
-+#ifndef VCHI_RX_BULK_QUEUE_SIZE
-+# define VCHI_RX_BULK_QUEUE_SIZE 64
-+#endif
-+
-+/* A limit on how many outstanding bulk requests we expect the peer to give us. If
-+ * the peer asks for more than this, VCHI will fail and assert. The number is determined
-+ * by the peer's hardware - it's the number of outstanding requests that can be queued
-+ * on all bulk channels. VC3's MPHI peripheral allows 16. */
-+#ifndef VCHI_MAX_PEER_BULK_REQUESTS
-+# define VCHI_MAX_PEER_BULK_REQUESTS 32
-+#endif
-+
-+/* Define VCHI_CCP2TX_MANUAL_POWER if the host tells us when to turn the CCP2
-+ * transmitter on and off.
-+ */
-+/*#define VCHI_CCP2TX_MANUAL_POWER*/
-+
-+#ifndef VCHI_CCP2TX_MANUAL_POWER
-+
-+/* Timeout (in milliseconds) for putting the CCP2TX interface into IDLE state. Set
-+ * negative for no IDLE.
-+ */
-+# ifndef VCHI_CCP2TX_IDLE_TIMEOUT
-+# define VCHI_CCP2TX_IDLE_TIMEOUT 5
-+# endif
-+
-+/* Timeout (in milliseconds) for putting the CCP2TX interface into OFF state. Set
-+ * negative for no OFF.
-+ */
-+# ifndef VCHI_CCP2TX_OFF_TIMEOUT
-+# define VCHI_CCP2TX_OFF_TIMEOUT 1000
-+# endif
-+
-+#endif /* VCHI_CCP2TX_MANUAL_POWER */
-+
-+#endif /* VCHI_CFG_H_ */
-+
-+/****************************** End of file **********************************/
-diff --git a/drivers/misc/vc04_services/interface/vchi/vchi_cfg_internal.h b/drivers/misc/vc04_services/interface/vchi/vchi_cfg_internal.h
-new file mode 100644
-index 0000000..35dcba4
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchi/vchi_cfg_internal.h
-@@ -0,0 +1,71 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef VCHI_CFG_INTERNAL_H_
-+#define VCHI_CFG_INTERNAL_H_
-+
-+/****************************************************************************************
-+ * Control optimisation attempts.
-+ ***************************************************************************************/
-+
-+// Don't use lots of short-term locks - use great long ones, reducing the overall locks-per-second
-+#define VCHI_COARSE_LOCKING
-+
-+// Avoid lock then unlock on exit from blocking queue operations (msg tx, bulk rx/tx)
-+// (only relevant if VCHI_COARSE_LOCKING)
-+#define VCHI_ELIDE_BLOCK_EXIT_LOCK
-+
-+// Avoid lock on non-blocking peek
-+// (only relevant if VCHI_COARSE_LOCKING)
-+#define VCHI_AVOID_PEEK_LOCK
-+
-+// Use one slot-handler thread per connection, rather than 1 thread dealing with all connections in rotation.
-+#define VCHI_MULTIPLE_HANDLER_THREADS
-+
-+// Put free descriptors onto the head of the free queue, rather than the tail, so that we don't thrash
-+// our way through the pool of descriptors.
-+#define VCHI_PUSH_FREE_DESCRIPTORS_ONTO_HEAD
-+
-+// Don't issue a MSG_AVAILABLE callback for every single message. Possibly only safe if VCHI_COARSE_LOCKING.
-+#define VCHI_FEWER_MSG_AVAILABLE_CALLBACKS
-+
-+// Don't use message descriptors for TX messages that don't need them
-+#define VCHI_MINIMISE_TX_MSG_DESCRIPTORS
-+
-+// Nano-locks for multiqueue
-+//#define VCHI_MQUEUE_NANOLOCKS
-+
-+// Lock-free(er) dequeuing
-+//#define VCHI_RX_NANOLOCKS
-+
-+#endif /*VCHI_CFG_INTERNAL_H_*/
-diff --git a/drivers/misc/vc04_services/interface/vchi/vchi_common.h b/drivers/misc/vc04_services/interface/vchi/vchi_common.h
-new file mode 100644
-index 0000000..9e6c00e
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchi/vchi_common.h
-@@ -0,0 +1,163 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef VCHI_COMMON_H_
-+#define VCHI_COMMON_H_
-+
-+
-+//flags used when sending messages (must be bitmapped)
-+typedef enum
-+{
-+ VCHI_FLAGS_NONE = 0x0,
-+ VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE = 0x1, // waits for message to be received, or sent (NB. not the same as being seen on other side)
-+ VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE = 0x2, // run a callback when message sent
-+ VCHI_FLAGS_BLOCK_UNTIL_QUEUED = 0x4, // return once the transfer is in a queue ready to go
-+ VCHI_FLAGS_ALLOW_PARTIAL = 0x8,
-+ VCHI_FLAGS_BLOCK_UNTIL_DATA_READ = 0x10,
-+ VCHI_FLAGS_CALLBACK_WHEN_DATA_READ = 0x20,
-+
-+ VCHI_FLAGS_ALIGN_SLOT = 0x000080, // internal use only
-+ VCHI_FLAGS_BULK_AUX_QUEUED = 0x010000, // internal use only
-+ VCHI_FLAGS_BULK_AUX_COMPLETE = 0x020000, // internal use only
-+ VCHI_FLAGS_BULK_DATA_QUEUED = 0x040000, // internal use only
-+ VCHI_FLAGS_BULK_DATA_COMPLETE = 0x080000, // internal use only
-+ VCHI_FLAGS_INTERNAL = 0xFF0000
-+} VCHI_FLAGS_T;
-+
-+// constants for vchi_crc_control()
-+typedef enum {
-+ VCHI_CRC_NOTHING = -1,
-+ VCHI_CRC_PER_SERVICE = 0,
-+ VCHI_CRC_EVERYTHING = 1,
-+} VCHI_CRC_CONTROL_T;
-+
-+//callback reasons when an event occurs on a service
-+typedef enum
-+{
-+ VCHI_CALLBACK_REASON_MIN,
-+
-+ //This indicates that there is data available
-+ //handle is the msg id that was transmitted with the data
-+ // When a message is received and there was no FULL message available previously, send callback
-+ // Tasks get kicked by the callback, reset their event and try and read from the fifo until it fails
-+ VCHI_CALLBACK_MSG_AVAILABLE,
-+ VCHI_CALLBACK_MSG_SENT,
-+ VCHI_CALLBACK_MSG_SPACE_AVAILABLE, // XXX not yet implemented
-+
-+ // This indicates that a transfer from the other side has completed
-+ VCHI_CALLBACK_BULK_RECEIVED,
-+ //This indicates that data queued up to be sent has now gone
-+ //handle is the msg id that was used when sending the data
-+ VCHI_CALLBACK_BULK_SENT,
-+ VCHI_CALLBACK_BULK_RX_SPACE_AVAILABLE, // XXX not yet implemented
-+ VCHI_CALLBACK_BULK_TX_SPACE_AVAILABLE, // XXX not yet implemented
-+
-+ VCHI_CALLBACK_SERVICE_CLOSED,
-+
-+ // this side has sent XOFF to peer due to lack of data consumption by service
-+ // (suggests the service may need to take some recovery action if it has
-+ // been deliberately holding off consuming data)
-+ VCHI_CALLBACK_SENT_XOFF,
-+ VCHI_CALLBACK_SENT_XON,
-+
-+ // indicates that a bulk transfer has finished reading the source buffer
-+ VCHI_CALLBACK_BULK_DATA_READ,
-+
-+ // power notification events (currently host side only)
-+ VCHI_CALLBACK_PEER_OFF,
-+ VCHI_CALLBACK_PEER_SUSPENDED,
-+ VCHI_CALLBACK_PEER_ON,
-+ VCHI_CALLBACK_PEER_RESUMED,
-+ VCHI_CALLBACK_FORCED_POWER_OFF,
-+
-+#ifdef USE_VCHIQ_ARM
-+ // some extra notifications provided by vchiq_arm
-+ VCHI_CALLBACK_SERVICE_OPENED,
-+ VCHI_CALLBACK_BULK_RECEIVE_ABORTED,
-+ VCHI_CALLBACK_BULK_TRANSMIT_ABORTED,
-+#endif
-+
-+ VCHI_CALLBACK_REASON_MAX
-+} VCHI_CALLBACK_REASON_T;
-+
-+//Calback used by all services / bulk transfers
-+typedef void (*VCHI_CALLBACK_T)( void *callback_param, //my service local param
-+ VCHI_CALLBACK_REASON_T reason,
-+ void *handle ); //for transmitting msg's only
-+
-+
-+
-+/*
-+ * Define vector struct for scatter-gather (vector) operations
-+ * Vectors can be nested - if a vector element has negative length, then
-+ * the data pointer is treated as pointing to another vector array, with
-+ * '-vec_len' elements. Thus to append a header onto an existing vector,
-+ * you can do this:
-+ *
-+ * void foo(const VCHI_MSG_VECTOR_T *v, int n)
-+ * {
-+ * VCHI_MSG_VECTOR_T nv[2];
-+ * nv[0].vec_base = my_header;
-+ * nv[0].vec_len = sizeof my_header;
-+ * nv[1].vec_base = v;
-+ * nv[1].vec_len = -n;
-+ * ...
-+ *
-+ */
-+typedef struct vchi_msg_vector {
-+ const void *vec_base;
-+ int32_t vec_len;
-+} VCHI_MSG_VECTOR_T;
-+
-+// Opaque type for a connection API
-+typedef struct opaque_vchi_connection_api_t VCHI_CONNECTION_API_T;
-+
-+// Opaque type for a message driver
-+typedef struct opaque_vchi_message_driver_t VCHI_MESSAGE_DRIVER_T;
-+
-+
-+// Iterator structure for reading ahead through received message queue. Allocated by client,
-+// initialised by vchi_msg_look_ahead. Fields are for internal VCHI use only.
-+// Iterates over messages in queue at the instant of the call to vchi_msg_lookahead -
-+// will not proceed to messages received since. Behaviour is undefined if an iterator
-+// is used again after messages for that service are removed/dequeued by any
-+// means other than vchi_msg_iter_... calls on the iterator itself.
-+typedef struct {
-+ struct opaque_vchi_service_t *service;
-+ void *last;
-+ void *next;
-+ void *remove;
-+} VCHI_MSG_ITER_T;
-+
-+
-+#endif // VCHI_COMMON_H_
-diff --git a/drivers/misc/vc04_services/interface/vchi/vchi_mh.h b/drivers/misc/vc04_services/interface/vchi/vchi_mh.h
-new file mode 100644
-index 0000000..198bd07
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchi/vchi_mh.h
-@@ -0,0 +1,42 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef VCHI_MH_H_
-+#define VCHI_MH_H_
-+
-+#include <linux/types.h>
-+
-+typedef int32_t VCHI_MEM_HANDLE_T;
-+#define VCHI_MEM_HANDLE_INVALID 0
-+
-+#endif
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq.h b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq.h
-new file mode 100644
-index 0000000..f87dcbd
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq.h
-@@ -0,0 +1,41 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef VCHIQ_VCHIQ_H
-+#define VCHIQ_VCHIQ_H
-+
-+#include "vchiq_if.h"
-+#include "vchiq_util.h"
-+
-+#endif
-+
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835.h b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835.h
-new file mode 100644
-index 0000000..7ea5c64
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835.h
-@@ -0,0 +1,42 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef VCHIQ_2835_H
-+#define VCHIQ_2835_H
-+
-+#include "vchiq_pagelist.h"
-+
-+#define VCHIQ_PLATFORM_FRAGMENTS_OFFSET_IDX 0
-+#define VCHIQ_PLATFORM_FRAGMENTS_COUNT_IDX 1
-+
-+#endif /* VCHIQ_2835_H */
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
-new file mode 100644
-index 0000000..2b5fa56
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
-@@ -0,0 +1,538 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/types.h>
-+#include <linux/errno.h>
-+#include <linux/interrupt.h>
-+#include <linux/irq.h>
-+#include <linux/pagemap.h>
-+#include <linux/dma-mapping.h>
-+#include <linux/version.h>
-+#include <linux/io.h>
-+#include <linux/uaccess.h>
-+#include <asm/pgtable.h>
-+
-+#include <mach/irqs.h>
-+
-+#include <mach/platform.h>
-+#include <mach/vcio.h>
-+
-+#define TOTAL_SLOTS (VCHIQ_SLOT_ZERO_SLOTS + 2 * 32)
-+
-+#define VCHIQ_DOORBELL_IRQ IRQ_ARM_DOORBELL_0
-+#define VCHIQ_ARM_ADDRESS(x) ((void *)__virt_to_bus((unsigned)x))
-+
-+#include "vchiq_arm.h"
-+#include "vchiq_2835.h"
-+#include "vchiq_connected.h"
-+
-+#define MAX_FRAGMENTS (VCHIQ_NUM_CURRENT_BULKS * 2)
-+
-+typedef struct vchiq_2835_state_struct {
-+ int inited;
-+ VCHIQ_ARM_STATE_T arm_state;
-+} VCHIQ_2835_ARM_STATE_T;
-+
-+static char *g_slot_mem;
-+static int g_slot_mem_size;
-+dma_addr_t g_slot_phys;
-+static FRAGMENTS_T *g_fragments_base;
-+static FRAGMENTS_T *g_free_fragments;
-+struct semaphore g_free_fragments_sema;
-+
-+extern int vchiq_arm_log_level;
-+
-+static DEFINE_SEMAPHORE(g_free_fragments_mutex);
-+
-+static irqreturn_t
-+vchiq_doorbell_irq(int irq, void *dev_id);
-+
-+static int
-+create_pagelist(char __user *buf, size_t count, unsigned short type,
-+ struct task_struct *task, PAGELIST_T ** ppagelist);
-+
-+static void
-+free_pagelist(PAGELIST_T *pagelist, int actual);
-+
-+int __init
-+vchiq_platform_init(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_SLOT_ZERO_T *vchiq_slot_zero;
-+ int frag_mem_size;
-+ int err;
-+ int i;
-+
-+ /* Allocate space for the channels in coherent memory */
-+ g_slot_mem_size = PAGE_ALIGN(TOTAL_SLOTS * VCHIQ_SLOT_SIZE);
-+ frag_mem_size = PAGE_ALIGN(sizeof(FRAGMENTS_T) * MAX_FRAGMENTS);
-+
-+ g_slot_mem = dma_alloc_coherent(NULL, g_slot_mem_size + frag_mem_size,
-+ &g_slot_phys, GFP_ATOMIC);
-+
-+ if (!g_slot_mem) {
-+ vchiq_log_error(vchiq_arm_log_level,
-+ "Unable to allocate channel memory");
-+ err = -ENOMEM;
-+ goto failed_alloc;
-+ }
-+
-+ WARN_ON(((int)g_slot_mem & (PAGE_SIZE - 1)) != 0);
-+
-+ vchiq_slot_zero = vchiq_init_slots(g_slot_mem, g_slot_mem_size);
-+ if (!vchiq_slot_zero) {
-+ err = -EINVAL;
-+ goto failed_init_slots;
-+ }
-+
-+ vchiq_slot_zero->platform_data[VCHIQ_PLATFORM_FRAGMENTS_OFFSET_IDX] =
-+ (int)g_slot_phys + g_slot_mem_size;
-+ vchiq_slot_zero->platform_data[VCHIQ_PLATFORM_FRAGMENTS_COUNT_IDX] =
-+ MAX_FRAGMENTS;
-+
-+ g_fragments_base = (FRAGMENTS_T *)(g_slot_mem + g_slot_mem_size);
-+ g_slot_mem_size += frag_mem_size;
-+
-+ g_free_fragments = g_fragments_base;
-+ for (i = 0; i < (MAX_FRAGMENTS - 1); i++) {
-+ *(FRAGMENTS_T **)&g_fragments_base[i] =
-+ &g_fragments_base[i + 1];
-+ }
-+ *(FRAGMENTS_T **)&g_fragments_base[i] = NULL;
-+ sema_init(&g_free_fragments_sema, MAX_FRAGMENTS);
-+
-+ if (vchiq_init_state(state, vchiq_slot_zero, 0/*slave*/) !=
-+ VCHIQ_SUCCESS) {
-+ err = -EINVAL;
-+ goto failed_vchiq_init;
-+ }
-+
-+ err = request_irq(VCHIQ_DOORBELL_IRQ, vchiq_doorbell_irq,
-+ IRQF_IRQPOLL, "VCHIQ doorbell",
-+ state);
-+ if (err < 0) {
-+ vchiq_log_error(vchiq_arm_log_level, "%s: failed to register "
-+ "irq=%d err=%d", __func__,
-+ VCHIQ_DOORBELL_IRQ, err);
-+ goto failed_request_irq;
-+ }
-+
-+ /* Send the base address of the slots to VideoCore */
-+
-+ dsb(); /* Ensure all writes have completed */
-+
-+ bcm_mailbox_write(MBOX_CHAN_VCHIQ, (unsigned int)g_slot_phys);
-+
-+ vchiq_log_info(vchiq_arm_log_level,
-+ "vchiq_init - done (slots %x, phys %x)",
-+ (unsigned int)vchiq_slot_zero, g_slot_phys);
-+
-+ vchiq_call_connected_callbacks();
-+
-+ return 0;
-+
-+failed_request_irq:
-+failed_vchiq_init:
-+failed_init_slots:
-+ dma_free_coherent(NULL, g_slot_mem_size, g_slot_mem, g_slot_phys);
-+
-+failed_alloc:
-+ return err;
-+}
-+
-+void __exit
-+vchiq_platform_exit(VCHIQ_STATE_T *state)
-+{
-+ free_irq(VCHIQ_DOORBELL_IRQ, state);
-+ dma_free_coherent(NULL, g_slot_mem_size,
-+ g_slot_mem, g_slot_phys);
-+}
-+
-+
-+VCHIQ_STATUS_T
-+vchiq_platform_init_state(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
-+ state->platform_state = kzalloc(sizeof(VCHIQ_2835_ARM_STATE_T), GFP_KERNEL);
-+ ((VCHIQ_2835_ARM_STATE_T*)state->platform_state)->inited = 1;
-+ status = vchiq_arm_init_state(state, &((VCHIQ_2835_ARM_STATE_T*)state->platform_state)->arm_state);
-+ if(status != VCHIQ_SUCCESS)
-+ {
-+ ((VCHIQ_2835_ARM_STATE_T*)state->platform_state)->inited = 0;
-+ }
-+ return status;
-+}
-+
-+VCHIQ_ARM_STATE_T*
-+vchiq_platform_get_arm_state(VCHIQ_STATE_T *state)
-+{
-+ if(!((VCHIQ_2835_ARM_STATE_T*)state->platform_state)->inited)
-+ {
-+ BUG();
-+ }
-+ return &((VCHIQ_2835_ARM_STATE_T*)state->platform_state)->arm_state;
-+}
-+
-+void
-+remote_event_signal(REMOTE_EVENT_T *event)
-+{
-+ wmb();
-+
-+ event->fired = 1;
-+
-+ dsb(); /* data barrier operation */
-+
-+ if (event->armed) {
-+ /* trigger vc interrupt */
-+
-+ writel(0, __io_address(ARM_0_BELL2));
-+ }
-+}
-+
-+int
-+vchiq_copy_from_user(void *dst, const void *src, int size)
-+{
-+ if ((uint32_t)src < TASK_SIZE) {
-+ return copy_from_user(dst, src, size);
-+ } else {
-+ memcpy(dst, src, size);
-+ return 0;
-+ }
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_prepare_bulk_data(VCHIQ_BULK_T *bulk, VCHI_MEM_HANDLE_T memhandle,
-+ void *offset, int size, int dir)
-+{
-+ PAGELIST_T *pagelist;
-+ int ret;
-+
-+ WARN_ON(memhandle != VCHI_MEM_HANDLE_INVALID);
-+
-+ ret = create_pagelist((char __user *)offset, size,
-+ (dir == VCHIQ_BULK_RECEIVE)
-+ ? PAGELIST_READ
-+ : PAGELIST_WRITE,
-+ current,
-+ &pagelist);
-+ if (ret != 0)
-+ return VCHIQ_ERROR;
-+
-+ bulk->handle = memhandle;
-+ bulk->data = VCHIQ_ARM_ADDRESS(pagelist);
-+
-+ /* Store the pagelist address in remote_data, which isn't used by the
-+ slave. */
-+ bulk->remote_data = pagelist;
-+
-+ return VCHIQ_SUCCESS;
-+}
-+
-+void
-+vchiq_complete_bulk(VCHIQ_BULK_T *bulk)
-+{
-+ if (bulk && bulk->remote_data && bulk->actual)
-+ free_pagelist((PAGELIST_T *)bulk->remote_data, bulk->actual);
-+}
-+
-+void
-+vchiq_transfer_bulk(VCHIQ_BULK_T *bulk)
-+{
-+ /*
-+ * This should only be called on the master (VideoCore) side, but
-+ * provide an implementation to avoid the need for ifdefery.
-+ */
-+ BUG();
-+}
-+
-+void
-+vchiq_dump_platform_state(void *dump_context)
-+{
-+ char buf[80];
-+ int len;
-+ len = snprintf(buf, sizeof(buf),
-+ " Platform: 2835 (VC master)");
-+ vchiq_dump(dump_context, buf, len + 1);
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_platform_suspend(VCHIQ_STATE_T *state)
-+{
-+ return VCHIQ_ERROR;
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_platform_resume(VCHIQ_STATE_T *state)
-+{
-+ return VCHIQ_SUCCESS;
-+}
-+
-+void
-+vchiq_platform_paused(VCHIQ_STATE_T *state)
-+{
-+}
-+
-+void
-+vchiq_platform_resumed(VCHIQ_STATE_T *state)
-+{
-+}
-+
-+int
-+vchiq_platform_videocore_wanted(VCHIQ_STATE_T* state)
-+{
-+ return 1; // autosuspend not supported - videocore always wanted
-+}
-+
-+int
-+vchiq_platform_use_suspend_timer(void)
-+{
-+ return 0;
-+}
-+void
-+vchiq_dump_platform_use_state(VCHIQ_STATE_T *state)
-+{
-+ vchiq_log_info((vchiq_arm_log_level>=VCHIQ_LOG_INFO),"Suspend timer not in use");
-+}
-+void
-+vchiq_platform_handle_timeout(VCHIQ_STATE_T *state)
-+{
-+ (void)state;
-+}
-+/*
-+ * Local functions
-+ */
-+
-+static irqreturn_t
-+vchiq_doorbell_irq(int irq, void *dev_id)
-+{
-+ VCHIQ_STATE_T *state = dev_id;
-+ irqreturn_t ret = IRQ_NONE;
-+ unsigned int status;
-+
-+ /* Read (and clear) the doorbell */
-+ status = readl(__io_address(ARM_0_BELL0));
-+
-+ if (status & 0x4) { /* Was the doorbell rung? */
-+ remote_event_pollall(state);
-+ ret = IRQ_HANDLED;
-+ }
-+
-+ return ret;
-+}
-+
-+/* There is a potential problem with partial cache lines (pages?)
-+** at the ends of the block when reading. If the CPU accessed anything in
-+** the same line (page?) then it may have pulled old data into the cache,
-+** obscuring the new data underneath. We can solve this by transferring the
-+** partial cache lines separately, and allowing the ARM to copy into the
-+** cached area.
-+
-+** N.B. This implementation plays slightly fast and loose with the Linux
-+** driver programming rules, e.g. its use of __virt_to_bus instead of
-+** dma_map_single, but it isn't a multi-platform driver and it benefits
-+** from increased speed as a result.
-+*/
-+
-+static int
-+create_pagelist(char __user *buf, size_t count, unsigned short type,
-+ struct task_struct *task, PAGELIST_T ** ppagelist)
-+{
-+ PAGELIST_T *pagelist;
-+ struct page **pages;
-+ struct page *page;
-+ unsigned long *addrs;
-+ unsigned int num_pages, offset, i;
-+ char *addr, *base_addr, *next_addr;
-+ int run, addridx, actual_pages;
-+
-+ offset = (unsigned int)buf & (PAGE_SIZE - 1);
-+ num_pages = (count + offset + PAGE_SIZE - 1) / PAGE_SIZE;
-+
-+ *ppagelist = NULL;
-+
-+ /* Allocate enough storage to hold the page pointers and the page
-+ ** list
-+ */
-+ pagelist = kmalloc(sizeof(PAGELIST_T) +
-+ (num_pages * sizeof(unsigned long)) +
-+ (num_pages * sizeof(pages[0])),
-+ GFP_KERNEL);
-+
-+ vchiq_log_trace(vchiq_arm_log_level,
-+ "create_pagelist - %x", (unsigned int)pagelist);
-+ if (!pagelist)
-+ return -ENOMEM;
-+
-+ addrs = pagelist->addrs;
-+ pages = (struct page **)(addrs + num_pages);
-+
-+ down_read(&task->mm->mmap_sem);
-+ actual_pages = get_user_pages(task, task->mm,
-+ (unsigned long)buf & ~(PAGE_SIZE - 1), num_pages,
-+ (type == PAGELIST_READ) /*Write */ , 0 /*Force */ ,
-+ pages, NULL /*vmas */);
-+ up_read(&task->mm->mmap_sem);
-+
-+ if (actual_pages != num_pages)
-+ {
-+ /* This is probably due to the process being killed */
-+ while (actual_pages > 0)
-+ {
-+ actual_pages--;
-+ page_cache_release(pages[actual_pages]);
-+ }
-+ kfree(pagelist);
-+ if (actual_pages == 0)
-+ actual_pages = -ENOMEM;
-+ return actual_pages;
-+ }
-+
-+ pagelist->length = count;
-+ pagelist->type = type;
-+ pagelist->offset = offset;
-+
-+ /* Group the pages into runs of contiguous pages */
-+
-+ base_addr = VCHIQ_ARM_ADDRESS(page_address(pages[0]));
-+ next_addr = base_addr + PAGE_SIZE;
-+ addridx = 0;
-+ run = 0;
-+
-+ for (i = 1; i < num_pages; i++) {
-+ addr = VCHIQ_ARM_ADDRESS(page_address(pages[i]));
-+ if ((addr == next_addr) && (run < (PAGE_SIZE - 1))) {
-+ next_addr += PAGE_SIZE;
-+ run++;
-+ } else {
-+ addrs[addridx] = (unsigned long)base_addr + run;
-+ addridx++;
-+ base_addr = addr;
-+ next_addr = addr + PAGE_SIZE;
-+ run = 0;
-+ }
-+ }
-+
-+ addrs[addridx] = (unsigned long)base_addr + run;
-+ addridx++;
-+
-+ /* Partial cache lines (fragments) require special measures */
-+ if ((type == PAGELIST_READ) &&
-+ ((pagelist->offset & (CACHE_LINE_SIZE - 1)) ||
-+ ((pagelist->offset + pagelist->length) &
-+ (CACHE_LINE_SIZE - 1)))) {
-+ FRAGMENTS_T *fragments;
-+
-+ if (down_interruptible(&g_free_fragments_sema) != 0) {
-+ kfree(pagelist);
-+ return -EINTR;
-+ }
-+
-+ WARN_ON(g_free_fragments == NULL);
-+
-+ down(&g_free_fragments_mutex);
-+ fragments = (FRAGMENTS_T *) g_free_fragments;
-+ WARN_ON(fragments == NULL);
-+ g_free_fragments = *(FRAGMENTS_T **) g_free_fragments;
-+ up(&g_free_fragments_mutex);
-+ pagelist->type =
-+ PAGELIST_READ_WITH_FRAGMENTS + (fragments -
-+ g_fragments_base);
-+ }
-+
-+ for (page = virt_to_page(pagelist);
-+ page <= virt_to_page(addrs + num_pages - 1); page++) {
-+ flush_dcache_page(page);
-+ }
-+
-+ *ppagelist = pagelist;
-+
-+ return 0;
-+}
-+
-+static void
-+free_pagelist(PAGELIST_T *pagelist, int actual)
-+{
-+ struct page **pages;
-+ unsigned int num_pages, i;
-+
-+ vchiq_log_trace(vchiq_arm_log_level,
-+ "free_pagelist - %x, %d", (unsigned int)pagelist, actual);
-+
-+ num_pages =
-+ (pagelist->length + pagelist->offset + PAGE_SIZE - 1) /
-+ PAGE_SIZE;
-+
-+ pages = (struct page **)(pagelist->addrs + num_pages);
-+
-+ /* Deal with any partial cache lines (fragments) */
-+ if (pagelist->type >= PAGELIST_READ_WITH_FRAGMENTS) {
-+ FRAGMENTS_T *fragments = g_fragments_base +
-+ (pagelist->type - PAGELIST_READ_WITH_FRAGMENTS);
-+ int head_bytes, tail_bytes;
-+ head_bytes = (CACHE_LINE_SIZE - pagelist->offset) &
-+ (CACHE_LINE_SIZE - 1);
-+ tail_bytes = (pagelist->offset + actual) &
-+ (CACHE_LINE_SIZE - 1);
-+
-+ if ((actual >= 0) && (head_bytes != 0)) {
-+ if (head_bytes > actual)
-+ head_bytes = actual;
-+
-+ memcpy((char *)page_address(pages[0]) +
-+ pagelist->offset,
-+ fragments->headbuf,
-+ head_bytes);
-+ }
-+ if ((actual >= 0) && (head_bytes < actual) &&
-+ (tail_bytes != 0)) {
-+ memcpy((char *)page_address(pages[num_pages - 1]) +
-+ ((pagelist->offset + actual) &
-+ (PAGE_SIZE - 1) & ~(CACHE_LINE_SIZE - 1)),
-+ fragments->tailbuf, tail_bytes);
-+ }
-+
-+ down(&g_free_fragments_mutex);
-+ *(FRAGMENTS_T **) fragments = g_free_fragments;
-+ g_free_fragments = fragments;
-+ up(&g_free_fragments_mutex);
-+ up(&g_free_fragments_sema);
-+ }
-+
-+ for (i = 0; i < num_pages; i++) {
-+ if (pagelist->type != PAGELIST_WRITE)
-+ set_page_dirty(pages[i]);
-+ page_cache_release(pages[i]);
-+ }
-+
-+ kfree(pagelist);
-+}
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.c
-new file mode 100644
-index 0000000..f44d4b4
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.c
-@@ -0,0 +1,2813 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/types.h>
-+#include <linux/errno.h>
-+#include <linux/cdev.h>
-+#include <linux/fs.h>
-+#include <linux/device.h>
-+#include <linux/mm.h>
-+#include <linux/highmem.h>
-+#include <linux/pagemap.h>
-+#include <linux/bug.h>
-+#include <linux/semaphore.h>
-+#include <linux/list.h>
-+#include <linux/proc_fs.h>
-+
-+#include "vchiq_core.h"
-+#include "vchiq_ioctl.h"
-+#include "vchiq_arm.h"
-+
-+#define DEVICE_NAME "vchiq"
-+
-+/* Override the default prefix, which would be vchiq_arm (from the filename) */
-+#undef MODULE_PARAM_PREFIX
-+#define MODULE_PARAM_PREFIX DEVICE_NAME "."
-+
-+#define VCHIQ_MINOR 0
-+
-+/* Some per-instance constants */
-+#define MAX_COMPLETIONS 16
-+#define MAX_SERVICES 64
-+#define MAX_ELEMENTS 8
-+#define MSG_QUEUE_SIZE 64
-+
-+#define KEEPALIVE_VER 1
-+#define KEEPALIVE_VER_MIN KEEPALIVE_VER
-+
-+/* Run time control of log level, based on KERN_XXX level. */
-+int vchiq_arm_log_level = VCHIQ_LOG_DEFAULT;
-+int vchiq_susp_log_level = VCHIQ_LOG_ERROR;
-+
-+#define SUSPEND_TIMER_TIMEOUT_MS 100
-+#define SUSPEND_RETRY_TIMER_TIMEOUT_MS 1000
-+
-+#define VC_SUSPEND_NUM_OFFSET 3 /* number of values before idle which are -ve */
-+static const char *const suspend_state_names[] = {
-+ "VC_SUSPEND_FORCE_CANCELED",
-+ "VC_SUSPEND_REJECTED",
-+ "VC_SUSPEND_FAILED",
-+ "VC_SUSPEND_IDLE",
-+ "VC_SUSPEND_REQUESTED",
-+ "VC_SUSPEND_IN_PROGRESS",
-+ "VC_SUSPEND_SUSPENDED"
-+};
-+#define VC_RESUME_NUM_OFFSET 1 /* number of values before idle which are -ve */
-+static const char *const resume_state_names[] = {
-+ "VC_RESUME_FAILED",
-+ "VC_RESUME_IDLE",
-+ "VC_RESUME_REQUESTED",
-+ "VC_RESUME_IN_PROGRESS",
-+ "VC_RESUME_RESUMED"
-+};
-+/* The number of times we allow force suspend to timeout before actually
-+** _forcing_ suspend. This is to cater for SW which fails to release vchiq
-+** correctly - we don't want to prevent ARM suspend indefinitely in this case.
-+*/
-+#define FORCE_SUSPEND_FAIL_MAX 8
-+
-+/* The time in ms allowed for videocore to go idle when force suspend has been
-+ * requested */
-+#define FORCE_SUSPEND_TIMEOUT_MS 200
-+
-+
-+static void suspend_timer_callback(unsigned long context);
-+static int vchiq_proc_add_instance(VCHIQ_INSTANCE_T instance);
-+static void vchiq_proc_remove_instance(VCHIQ_INSTANCE_T instance);
-+
-+
-+typedef struct user_service_struct {
-+ VCHIQ_SERVICE_T *service;
-+ void *userdata;
-+ VCHIQ_INSTANCE_T instance;
-+ int is_vchi;
-+ int dequeue_pending;
-+ int message_available_pos;
-+ int msg_insert;
-+ int msg_remove;
-+ struct semaphore insert_event;
-+ struct semaphore remove_event;
-+ VCHIQ_HEADER_T * msg_queue[MSG_QUEUE_SIZE];
-+} USER_SERVICE_T;
-+
-+struct bulk_waiter_node {
-+ struct bulk_waiter bulk_waiter;
-+ int pid;
-+ struct list_head list;
-+};
-+
-+struct vchiq_instance_struct {
-+ VCHIQ_STATE_T *state;
-+ VCHIQ_COMPLETION_DATA_T completions[MAX_COMPLETIONS];
-+ int completion_insert;
-+ int completion_remove;
-+ struct semaphore insert_event;
-+ struct semaphore remove_event;
-+ struct mutex completion_mutex;
-+
-+ int connected;
-+ int closing;
-+ int pid;
-+ int mark;
-+
-+ struct list_head bulk_waiter_list;
-+ struct mutex bulk_waiter_list_mutex;
-+
-+ struct proc_dir_entry *proc_entry;
-+};
-+
-+typedef struct dump_context_struct {
-+ char __user *buf;
-+ size_t actual;
-+ size_t space;
-+ loff_t offset;
-+} DUMP_CONTEXT_T;
-+
-+static struct cdev vchiq_cdev;
-+static dev_t vchiq_devid;
-+static VCHIQ_STATE_T g_state;
-+static struct class *vchiq_class;
-+static struct device *vchiq_dev;
-+static DEFINE_SPINLOCK(msg_queue_spinlock);
-+
-+static const char *const ioctl_names[] = {
-+ "CONNECT",
-+ "SHUTDOWN",
-+ "CREATE_SERVICE",
-+ "REMOVE_SERVICE",
-+ "QUEUE_MESSAGE",
-+ "QUEUE_BULK_TRANSMIT",
-+ "QUEUE_BULK_RECEIVE",
-+ "AWAIT_COMPLETION",
-+ "DEQUEUE_MESSAGE",
-+ "GET_CLIENT_ID",
-+ "GET_CONFIG",
-+ "CLOSE_SERVICE",
-+ "USE_SERVICE",
-+ "RELEASE_SERVICE",
-+ "SET_SERVICE_OPTION",
-+ "DUMP_PHYS_MEM"
-+};
-+
-+vchiq_static_assert((sizeof(ioctl_names)/sizeof(ioctl_names[0])) ==
-+ (VCHIQ_IOC_MAX + 1));
-+
-+static void
-+dump_phys_mem(void *virt_addr, uint32_t num_bytes);
-+
-+/****************************************************************************
-+*
-+* add_completion
-+*
-+***************************************************************************/
-+
-+static VCHIQ_STATUS_T
-+add_completion(VCHIQ_INSTANCE_T instance, VCHIQ_REASON_T reason,
-+ VCHIQ_HEADER_T *header, USER_SERVICE_T *user_service,
-+ void *bulk_userdata)
-+{
-+ VCHIQ_COMPLETION_DATA_T *completion;
-+ DEBUG_INITIALISE(g_state.local)
-+
-+ while (instance->completion_insert ==
-+ (instance->completion_remove + MAX_COMPLETIONS)) {
-+ /* Out of space - wait for the client */
-+ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
-+ vchiq_log_trace(vchiq_arm_log_level,
-+ "add_completion - completion queue full");
-+ DEBUG_COUNT(COMPLETION_QUEUE_FULL_COUNT);
-+ if (down_interruptible(&instance->remove_event) != 0) {
-+ vchiq_log_info(vchiq_arm_log_level,
-+ "service_callback interrupted");
-+ return VCHIQ_RETRY;
-+ } else if (instance->closing) {
-+ vchiq_log_info(vchiq_arm_log_level,
-+ "service_callback closing");
-+ return VCHIQ_ERROR;
-+ }
-+ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
-+ }
-+
-+ completion =
-+ &instance->completions[instance->completion_insert &
-+ (MAX_COMPLETIONS - 1)];
-+
-+ completion->header = header;
-+ completion->reason = reason;
-+ /* N.B. service_userdata is updated while processing AWAIT_COMPLETION */
-+ completion->service_userdata = user_service->service;
-+ completion->bulk_userdata = bulk_userdata;
-+
-+ if (reason == VCHIQ_SERVICE_CLOSED)
-+ /* Take an extra reference, to be held until
-+ this CLOSED notification is delivered. */
-+ lock_service(user_service->service);
-+
-+ /* A write barrier is needed here to ensure that the entire completion
-+ record is written out before the insert point. */
-+ wmb();
-+
-+ if (reason == VCHIQ_MESSAGE_AVAILABLE)
-+ user_service->message_available_pos =
-+ instance->completion_insert;
-+ instance->completion_insert++;
-+
-+ up(&instance->insert_event);
-+
-+ return VCHIQ_SUCCESS;
-+}
-+
-+/****************************************************************************
-+*
-+* service_callback
-+*
-+***************************************************************************/
-+
-+static VCHIQ_STATUS_T
-+service_callback(VCHIQ_REASON_T reason, VCHIQ_HEADER_T *header,
-+ VCHIQ_SERVICE_HANDLE_T handle, void *bulk_userdata)
-+{
-+ /* How do we ensure the callback goes to the right client?
-+ ** The service_user data points to a USER_SERVICE_T record containing
-+ ** the original callback and the user state structure, which contains a
-+ ** circular buffer for completion records.
-+ */
-+ USER_SERVICE_T *user_service;
-+ VCHIQ_SERVICE_T *service;
-+ VCHIQ_INSTANCE_T instance;
-+ DEBUG_INITIALISE(g_state.local)
-+
-+ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
-+
-+ service = handle_to_service(handle);
-+ BUG_ON(!service);
-+ user_service = (USER_SERVICE_T *)service->base.userdata;
-+ instance = user_service->instance;
-+
-+ if (!instance || instance->closing)
-+ return VCHIQ_SUCCESS;
-+
-+ vchiq_log_trace(vchiq_arm_log_level,
-+ "service_callback - service %lx(%d), reason %d, header %lx, "
-+ "instance %lx, bulk_userdata %lx",
-+ (unsigned long)user_service,
-+ service->localport,
-+ reason, (unsigned long)header,
-+ (unsigned long)instance, (unsigned long)bulk_userdata);
-+
-+ if (header && user_service->is_vchi) {
-+ spin_lock(&msg_queue_spinlock);
-+ while (user_service->msg_insert ==
-+ (user_service->msg_remove + MSG_QUEUE_SIZE)) {
-+ spin_unlock(&msg_queue_spinlock);
-+ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
-+ DEBUG_COUNT(MSG_QUEUE_FULL_COUNT);
-+ vchiq_log_trace(vchiq_arm_log_level,
-+ "service_callback - msg queue full");
-+ /* If there is no MESSAGE_AVAILABLE in the completion
-+ ** queue, add one
-+ */
-+ if ((user_service->message_available_pos -
-+ instance->completion_remove) < 0) {
-+ VCHIQ_STATUS_T status;
-+ vchiq_log_info(vchiq_arm_log_level,
-+ "Inserting extra MESSAGE_AVAILABLE");
-+ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
-+ status = add_completion(instance, reason,
-+ NULL, user_service, bulk_userdata);
-+ if (status != VCHIQ_SUCCESS) {
-+ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
-+ return status;
-+ }
-+ }
-+
-+ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
-+ if (down_interruptible(&user_service->remove_event)
-+ != 0) {
-+ vchiq_log_info(vchiq_arm_log_level,
-+ "service_callback interrupted");
-+ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
-+ return VCHIQ_RETRY;
-+ } else if (instance->closing) {
-+ vchiq_log_info(vchiq_arm_log_level,
-+ "service_callback closing");
-+ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
-+ return VCHIQ_ERROR;
-+ }
-+ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
-+ spin_lock(&msg_queue_spinlock);
-+ }
-+
-+ user_service->msg_queue[user_service->msg_insert &
-+ (MSG_QUEUE_SIZE - 1)] = header;
-+ user_service->msg_insert++;
-+ spin_unlock(&msg_queue_spinlock);
-+
-+ up(&user_service->insert_event);
-+
-+ /* If there is a thread waiting in DEQUEUE_MESSAGE, or if
-+ ** there is a MESSAGE_AVAILABLE in the completion queue then
-+ ** bypass the completion queue.
-+ */
-+ if (((user_service->message_available_pos -
-+ instance->completion_remove) >= 0) ||
-+ user_service->dequeue_pending) {
-+ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
-+ user_service->dequeue_pending = 0;
-+ return VCHIQ_SUCCESS;
-+ }
-+
-+ header = NULL;
-+ }
-+ DEBUG_TRACE(SERVICE_CALLBACK_LINE);
-+
-+ return add_completion(instance, reason, header, user_service,
-+ bulk_userdata);
-+}
-+
-+/****************************************************************************
-+*
-+* user_service_free
-+*
-+***************************************************************************/
-+static void
-+user_service_free(void *userdata)
-+{
-+ kfree(userdata);
-+}
-+
-+/****************************************************************************
-+*
-+* vchiq_ioctl
-+*
-+***************************************************************************/
-+
-+static long
-+vchiq_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-+{
-+ VCHIQ_INSTANCE_T instance = file->private_data;
-+ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
-+ VCHIQ_SERVICE_T *service = NULL;
-+ long ret = 0;
-+ int i, rc;
-+ DEBUG_INITIALISE(g_state.local)
-+
-+ vchiq_log_trace(vchiq_arm_log_level,
-+ "vchiq_ioctl - instance %x, cmd %s, arg %lx",
-+ (unsigned int)instance,
-+ ((_IOC_TYPE(cmd) == VCHIQ_IOC_MAGIC) &&
-+ (_IOC_NR(cmd) <= VCHIQ_IOC_MAX)) ?
-+ ioctl_names[_IOC_NR(cmd)] : "<invalid>", arg);
-+
-+ switch (cmd) {
-+ case VCHIQ_IOC_SHUTDOWN:
-+ if (!instance->connected)
-+ break;
-+
-+ /* Remove all services */
-+ i = 0;
-+ while ((service = next_service_by_instance(instance->state,
-+ instance, &i)) != NULL) {
-+ status = vchiq_remove_service(service->handle);
-+ unlock_service(service);
-+ if (status != VCHIQ_SUCCESS)
-+ break;
-+ }
-+ service = NULL;
-+
-+ if (status == VCHIQ_SUCCESS) {
-+ /* Wake the completion thread and ask it to exit */
-+ instance->closing = 1;
-+ up(&instance->insert_event);
-+ }
-+
-+ break;
-+
-+ case VCHIQ_IOC_CONNECT:
-+ if (instance->connected) {
-+ ret = -EINVAL;
-+ break;
-+ }
-+ rc = mutex_lock_interruptible(&instance->state->mutex);
-+ if (rc != 0) {
-+ vchiq_log_error(vchiq_arm_log_level,
-+ "vchiq: connect: could not lock mutex for "
-+ "state %d: %d",
-+ instance->state->id, rc);
-+ ret = -EINTR;
-+ break;
-+ }
-+ status = vchiq_connect_internal(instance->state, instance);
-+ mutex_unlock(&instance->state->mutex);
-+
-+ if (status == VCHIQ_SUCCESS)
-+ instance->connected = 1;
-+ else
-+ vchiq_log_error(vchiq_arm_log_level,
-+ "vchiq: could not connect: %d", status);
-+ break;
-+
-+ case VCHIQ_IOC_CREATE_SERVICE: {
-+ VCHIQ_CREATE_SERVICE_T args;
-+ USER_SERVICE_T *user_service = NULL;
-+ void *userdata;
-+ int srvstate;
-+
-+ if (copy_from_user
-+ (&args, (const void __user *)arg,
-+ sizeof(args)) != 0) {
-+ ret = -EFAULT;
-+ break;
-+ }
-+
-+ user_service = kmalloc(sizeof(USER_SERVICE_T), GFP_KERNEL);
-+ if (!user_service) {
-+ ret = -ENOMEM;
-+ break;
-+ }
-+
-+ if (args.is_open) {
-+ if (!instance->connected) {
-+ ret = -ENOTCONN;
-+ kfree(user_service);
-+ break;
-+ }
-+ srvstate = VCHIQ_SRVSTATE_OPENING;
-+ } else {
-+ srvstate =
-+ instance->connected ?
-+ VCHIQ_SRVSTATE_LISTENING :
-+ VCHIQ_SRVSTATE_HIDDEN;
-+ }
-+
-+ userdata = args.params.userdata;
-+ args.params.callback = service_callback;
-+ args.params.userdata = user_service;
-+ service = vchiq_add_service_internal(
-+ instance->state,
-+ &args.params, srvstate,
-+ instance, user_service_free);
-+
-+ if (service != NULL) {
-+ user_service->service = service;
-+ user_service->userdata = userdata;
-+ user_service->instance = instance;
-+ user_service->is_vchi = args.is_vchi;
-+ user_service->dequeue_pending = 0;
-+ user_service->message_available_pos =
-+ instance->completion_remove - 1;
-+ user_service->msg_insert = 0;
-+ user_service->msg_remove = 0;
-+ sema_init(&user_service->insert_event, 0);
-+ sema_init(&user_service->remove_event, 0);
-+
-+ if (args.is_open) {
-+ status = vchiq_open_service_internal
-+ (service, instance->pid);
-+ if (status != VCHIQ_SUCCESS) {
-+ vchiq_remove_service(service->handle);
-+ service = NULL;
-+ ret = (status == VCHIQ_RETRY) ?
-+ -EINTR : -EIO;
-+ break;
-+ }
-+ }
-+
-+ if (copy_to_user((void __user *)
-+ &(((VCHIQ_CREATE_SERVICE_T __user *)
-+ arg)->handle),
-+ (const void *)&service->handle,
-+ sizeof(service->handle)) != 0) {
-+ ret = -EFAULT;
-+ vchiq_remove_service(service->handle);
-+ }
-+
-+ service = NULL;
-+ } else {
-+ ret = -EEXIST;
-+ kfree(user_service);
-+ }
-+ } break;
-+
-+ case VCHIQ_IOC_CLOSE_SERVICE: {
-+ VCHIQ_SERVICE_HANDLE_T handle = (VCHIQ_SERVICE_HANDLE_T)arg;
-+
-+ service = find_service_for_instance(instance, handle);
-+ if (service != NULL)
-+ status = vchiq_close_service(service->handle);
-+ else
-+ ret = -EINVAL;
-+ } break;
-+
-+ case VCHIQ_IOC_REMOVE_SERVICE: {
-+ VCHIQ_SERVICE_HANDLE_T handle = (VCHIQ_SERVICE_HANDLE_T)arg;
-+
-+ service = find_service_for_instance(instance, handle);
-+ if (service != NULL)
-+ status = vchiq_remove_service(service->handle);
-+ else
-+ ret = -EINVAL;
-+ } break;
-+
-+ case VCHIQ_IOC_USE_SERVICE:
-+ case VCHIQ_IOC_RELEASE_SERVICE: {
-+ VCHIQ_SERVICE_HANDLE_T handle = (VCHIQ_SERVICE_HANDLE_T)arg;
-+
-+ service = find_service_for_instance(instance, handle);
-+ if (service != NULL) {
-+ status = (cmd == VCHIQ_IOC_USE_SERVICE) ?
-+ vchiq_use_service_internal(service) :
-+ vchiq_release_service_internal(service);
-+ if (status != VCHIQ_SUCCESS) {
-+ vchiq_log_error(vchiq_susp_log_level,
-+ "%s: cmd %s returned error %d for "
-+ "service %c%c%c%c:%03d",
-+ __func__,
-+ (cmd == VCHIQ_IOC_USE_SERVICE) ?
-+ "VCHIQ_IOC_USE_SERVICE" :
-+ "VCHIQ_IOC_RELEASE_SERVICE",
-+ status,
-+ VCHIQ_FOURCC_AS_4CHARS(
-+ service->base.fourcc),
-+ service->client_id);
-+ ret = -EINVAL;
-+ }
-+ } else
-+ ret = -EINVAL;
-+ } break;
-+
-+ case VCHIQ_IOC_QUEUE_MESSAGE: {
-+ VCHIQ_QUEUE_MESSAGE_T args;
-+ if (copy_from_user
-+ (&args, (const void __user *)arg,
-+ sizeof(args)) != 0) {
-+ ret = -EFAULT;
-+ break;
-+ }
-+
-+ service = find_service_for_instance(instance, args.handle);
-+
-+ if ((service != NULL) && (args.count <= MAX_ELEMENTS)) {
-+ /* Copy elements into kernel space */
-+ VCHIQ_ELEMENT_T elements[MAX_ELEMENTS];
-+ if (copy_from_user(elements, args.elements,
-+ args.count * sizeof(VCHIQ_ELEMENT_T)) == 0)
-+ status = vchiq_queue_message
-+ (args.handle,
-+ elements, args.count);
-+ else
-+ ret = -EFAULT;
-+ } else {
-+ ret = -EINVAL;
-+ }
-+ } break;
-+
-+ case VCHIQ_IOC_QUEUE_BULK_TRANSMIT:
-+ case VCHIQ_IOC_QUEUE_BULK_RECEIVE: {
-+ VCHIQ_QUEUE_BULK_TRANSFER_T args;
-+ struct bulk_waiter_node *waiter = NULL;
-+ VCHIQ_BULK_DIR_T dir =
-+ (cmd == VCHIQ_IOC_QUEUE_BULK_TRANSMIT) ?
-+ VCHIQ_BULK_TRANSMIT : VCHIQ_BULK_RECEIVE;
-+
-+ if (copy_from_user
-+ (&args, (const void __user *)arg,
-+ sizeof(args)) != 0) {
-+ ret = -EFAULT;
-+ break;
-+ }
-+
-+ service = find_service_for_instance(instance, args.handle);
-+ if (!service) {
-+ ret = -EINVAL;
-+ break;
-+ }
-+
-+ if (args.mode == VCHIQ_BULK_MODE_BLOCKING) {
-+ waiter = kzalloc(sizeof(struct bulk_waiter_node),
-+ GFP_KERNEL);
-+ if (!waiter) {
-+ ret = -ENOMEM;
-+ break;
-+ }
-+ args.userdata = &waiter->bulk_waiter;
-+ } else if (args.mode == VCHIQ_BULK_MODE_WAITING) {
-+ struct list_head *pos;
-+ mutex_lock(&instance->bulk_waiter_list_mutex);
-+ list_for_each(pos, &instance->bulk_waiter_list) {
-+ if (list_entry(pos, struct bulk_waiter_node,
-+ list)->pid == current->pid) {
-+ waiter = list_entry(pos,
-+ struct bulk_waiter_node,
-+ list);
-+ list_del(pos);
-+ break;
-+ }
-+
-+ }
-+ mutex_unlock(&instance->bulk_waiter_list_mutex);
-+ if (!waiter) {
-+ vchiq_log_error(vchiq_arm_log_level,
-+ "no bulk_waiter found for pid %d",
-+ current->pid);
-+ ret = -ESRCH;
-+ break;
-+ }
-+ vchiq_log_info(vchiq_arm_log_level,
-+ "found bulk_waiter %x for pid %d",
-+ (unsigned int)waiter, current->pid);
-+ args.userdata = &waiter->bulk_waiter;
-+ }
-+ status = vchiq_bulk_transfer
-+ (args.handle,
-+ VCHI_MEM_HANDLE_INVALID,
-+ args.data, args.size,
-+ args.userdata, args.mode,
-+ dir);
-+ if (!waiter)
-+ break;
-+ if ((status != VCHIQ_RETRY) || fatal_signal_pending(current) ||
-+ !waiter->bulk_waiter.bulk) {
-+ if (waiter->bulk_waiter.bulk) {
-+ /* Cancel the signal when the transfer
-+ ** completes. */
-+ spin_lock(&bulk_waiter_spinlock);
-+ waiter->bulk_waiter.bulk->userdata = NULL;
-+ spin_unlock(&bulk_waiter_spinlock);
-+ }
-+ kfree(waiter);
-+ } else {
-+ const VCHIQ_BULK_MODE_T mode_waiting =
-+ VCHIQ_BULK_MODE_WAITING;
-+ waiter->pid = current->pid;
-+ mutex_lock(&instance->bulk_waiter_list_mutex);
-+ list_add(&waiter->list, &instance->bulk_waiter_list);
-+ mutex_unlock(&instance->bulk_waiter_list_mutex);
-+ vchiq_log_info(vchiq_arm_log_level,
-+ "saved bulk_waiter %x for pid %d",
-+ (unsigned int)waiter, current->pid);
-+
-+ if (copy_to_user((void __user *)
-+ &(((VCHIQ_QUEUE_BULK_TRANSFER_T __user *)
-+ arg)->mode),
-+ (const void *)&mode_waiting,
-+ sizeof(mode_waiting)) != 0)
-+ ret = -EFAULT;
-+ }
-+ } break;
-+
-+ case VCHIQ_IOC_AWAIT_COMPLETION: {
-+ VCHIQ_AWAIT_COMPLETION_T args;
-+
-+ DEBUG_TRACE(AWAIT_COMPLETION_LINE);
-+ if (!instance->connected) {
-+ ret = -ENOTCONN;
-+ break;
-+ }
-+
-+ if (copy_from_user(&args, (const void __user *)arg,
-+ sizeof(args)) != 0) {
-+ ret = -EFAULT;
-+ break;
-+ }
-+
-+ mutex_lock(&instance->completion_mutex);
-+
-+ DEBUG_TRACE(AWAIT_COMPLETION_LINE);
-+ while ((instance->completion_remove ==
-+ instance->completion_insert)
-+ && !instance->closing) {
-+ int rc;
-+ DEBUG_TRACE(AWAIT_COMPLETION_LINE);
-+ mutex_unlock(&instance->completion_mutex);
-+ rc = down_interruptible(&instance->insert_event);
-+ mutex_lock(&instance->completion_mutex);
-+ if (rc != 0) {
-+ DEBUG_TRACE(AWAIT_COMPLETION_LINE);
-+ vchiq_log_info(vchiq_arm_log_level,
-+ "AWAIT_COMPLETION interrupted");
-+ ret = -EINTR;
-+ break;
-+ }
-+ }
-+ DEBUG_TRACE(AWAIT_COMPLETION_LINE);
-+
-+ /* A read memory barrier is needed to stop prefetch of a stale
-+ ** completion record
-+ */
-+ rmb();
-+
-+ if (ret == 0) {
-+ int msgbufcount = args.msgbufcount;
-+ for (ret = 0; ret < args.count; ret++) {
-+ VCHIQ_COMPLETION_DATA_T *completion;
-+ VCHIQ_SERVICE_T *service;
-+ USER_SERVICE_T *user_service;
-+ VCHIQ_HEADER_T *header;
-+ if (instance->completion_remove ==
-+ instance->completion_insert)
-+ break;
-+ completion = &instance->completions[
-+ instance->completion_remove &
-+ (MAX_COMPLETIONS - 1)];
-+
-+ service = completion->service_userdata;
-+ user_service = service->base.userdata;
-+ completion->service_userdata =
-+ user_service->userdata;
-+
-+ header = completion->header;
-+ if (header) {
-+ void __user *msgbuf;
-+ int msglen;
-+
-+ msglen = header->size +
-+ sizeof(VCHIQ_HEADER_T);
-+ /* This must be a VCHIQ-style service */
-+ if (args.msgbufsize < msglen) {
-+ vchiq_log_error(
-+ vchiq_arm_log_level,
-+ "header %x: msgbufsize"
-+ " %x < msglen %x",
-+ (unsigned int)header,
-+ args.msgbufsize,
-+ msglen);
-+ WARN(1, "invalid message "
-+ "size\n");
-+ if (ret == 0)
-+ ret = -EMSGSIZE;
-+ break;
-+ }
-+ if (msgbufcount <= 0)
-+ /* Stall here for lack of a
-+ ** buffer for the message. */
-+ break;
-+ /* Get the pointer from user space */
-+ msgbufcount--;
-+ if (copy_from_user(&msgbuf,
-+ (const void __user *)
-+ &args.msgbufs[msgbufcount],
-+ sizeof(msgbuf)) != 0) {
-+ if (ret == 0)
-+ ret = -EFAULT;
-+ break;
-+ }
-+
-+ /* Copy the message to user space */
-+ if (copy_to_user(msgbuf, header,
-+ msglen) != 0) {
-+ if (ret == 0)
-+ ret = -EFAULT;
-+ break;
-+ }
-+
-+ /* Now it has been copied, the message
-+ ** can be released. */
-+ vchiq_release_message(service->handle,
-+ header);
-+
-+ /* The completion must point to the
-+ ** msgbuf. */
-+ completion->header = msgbuf;
-+ }
-+
-+ if (completion->reason ==
-+ VCHIQ_SERVICE_CLOSED)
-+ unlock_service(service);
-+
-+ if (copy_to_user((void __user *)(
-+ (size_t)args.buf +
-+ ret * sizeof(VCHIQ_COMPLETION_DATA_T)),
-+ completion,
-+ sizeof(VCHIQ_COMPLETION_DATA_T)) != 0) {
-+ if (ret == 0)
-+ ret = -EFAULT;
-+ break;
-+ }
-+
-+ instance->completion_remove++;
-+ }
-+
-+ if (msgbufcount != args.msgbufcount) {
-+ if (copy_to_user((void __user *)
-+ &((VCHIQ_AWAIT_COMPLETION_T *)arg)->
-+ msgbufcount,
-+ &msgbufcount,
-+ sizeof(msgbufcount)) != 0) {
-+ ret = -EFAULT;
-+ }
-+ }
-+ }
-+
-+ if (ret != 0)
-+ up(&instance->remove_event);
-+ mutex_unlock(&instance->completion_mutex);
-+ DEBUG_TRACE(AWAIT_COMPLETION_LINE);
-+ } break;
-+
-+ case VCHIQ_IOC_DEQUEUE_MESSAGE: {
-+ VCHIQ_DEQUEUE_MESSAGE_T args;
-+ USER_SERVICE_T *user_service;
-+ VCHIQ_HEADER_T *header;
-+
-+ DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
-+ if (copy_from_user
-+ (&args, (const void __user *)arg,
-+ sizeof(args)) != 0) {
-+ ret = -EFAULT;
-+ break;
-+ }
-+ service = find_service_for_instance(instance, args.handle);
-+ if (!service) {
-+ ret = -EINVAL;
-+ break;
-+ }
-+ user_service = (USER_SERVICE_T *)service->base.userdata;
-+ if (user_service->is_vchi == 0) {
-+ ret = -EINVAL;
-+ break;
-+ }
-+
-+ spin_lock(&msg_queue_spinlock);
-+ if (user_service->msg_remove == user_service->msg_insert) {
-+ if (!args.blocking) {
-+ spin_unlock(&msg_queue_spinlock);
-+ DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
-+ ret = -EWOULDBLOCK;
-+ break;
-+ }
-+ user_service->dequeue_pending = 1;
-+ do {
-+ spin_unlock(&msg_queue_spinlock);
-+ DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
-+ if (down_interruptible(
-+ &user_service->insert_event) != 0) {
-+ vchiq_log_info(vchiq_arm_log_level,
-+ "DEQUEUE_MESSAGE interrupted");
-+ ret = -EINTR;
-+ break;
-+ }
-+ spin_lock(&msg_queue_spinlock);
-+ } while (user_service->msg_remove ==
-+ user_service->msg_insert);
-+
-+ if (ret)
-+ break;
-+ }
-+
-+ BUG_ON((int)(user_service->msg_insert -
-+ user_service->msg_remove) < 0);
-+
-+ header = user_service->msg_queue[user_service->msg_remove &
-+ (MSG_QUEUE_SIZE - 1)];
-+ user_service->msg_remove++;
-+ spin_unlock(&msg_queue_spinlock);
-+
-+ up(&user_service->remove_event);
-+ if (header == NULL)
-+ ret = -ENOTCONN;
-+ else if (header->size <= args.bufsize) {
-+ /* Copy to user space if msgbuf is not NULL */
-+ if ((args.buf == NULL) ||
-+ (copy_to_user((void __user *)args.buf,
-+ header->data,
-+ header->size) == 0)) {
-+ ret = header->size;
-+ vchiq_release_message(
-+ service->handle,
-+ header);
-+ } else
-+ ret = -EFAULT;
-+ } else {
-+ vchiq_log_error(vchiq_arm_log_level,
-+ "header %x: bufsize %x < size %x",
-+ (unsigned int)header, args.bufsize,
-+ header->size);
-+ WARN(1, "invalid size\n");
-+ ret = -EMSGSIZE;
-+ }
-+ DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
-+ } break;
-+
-+ case VCHIQ_IOC_GET_CLIENT_ID: {
-+ VCHIQ_SERVICE_HANDLE_T handle = (VCHIQ_SERVICE_HANDLE_T)arg;
-+
-+ ret = vchiq_get_client_id(handle);
-+ } break;
-+
-+ case VCHIQ_IOC_GET_CONFIG: {
-+ VCHIQ_GET_CONFIG_T args;
-+ VCHIQ_CONFIG_T config;
-+
-+ if (copy_from_user(&args, (const void __user *)arg,
-+ sizeof(args)) != 0) {
-+ ret = -EFAULT;
-+ break;
-+ }
-+ if (args.config_size > sizeof(config)) {
-+ ret = -EINVAL;
-+ break;
-+ }
-+ status = vchiq_get_config(instance, args.config_size, &config);
-+ if (status == VCHIQ_SUCCESS) {
-+ if (copy_to_user((void __user *)args.pconfig,
-+ &config, args.config_size) != 0) {
-+ ret = -EFAULT;
-+ break;
-+ }
-+ }
-+ } break;
-+
-+ case VCHIQ_IOC_SET_SERVICE_OPTION: {
-+ VCHIQ_SET_SERVICE_OPTION_T args;
-+
-+ if (copy_from_user(
-+ &args, (const void __user *)arg,
-+ sizeof(args)) != 0) {
-+ ret = -EFAULT;
-+ break;
-+ }
-+
-+ service = find_service_for_instance(instance, args.handle);
-+ if (!service) {
-+ ret = -EINVAL;
-+ break;
-+ }
-+
-+ status = vchiq_set_service_option(
-+ args.handle, args.option, args.value);
-+ } break;
-+
-+ case VCHIQ_IOC_DUMP_PHYS_MEM: {
-+ VCHIQ_DUMP_MEM_T args;
-+
-+ if (copy_from_user
-+ (&args, (const void __user *)arg,
-+ sizeof(args)) != 0) {
-+ ret = -EFAULT;
-+ break;
-+ }
-+ dump_phys_mem(args.virt_addr, args.num_bytes);
-+ } break;
-+
-+ default:
-+ ret = -ENOTTY;
-+ break;
-+ }
-+
-+ if (service)
-+ unlock_service(service);
-+
-+ if (ret == 0) {
-+ if (status == VCHIQ_ERROR)
-+ ret = -EIO;
-+ else if (status == VCHIQ_RETRY)
-+ ret = -EINTR;
-+ }
-+
-+ if ((status == VCHIQ_SUCCESS) && (ret < 0) && (ret != -EINTR) &&
-+ (ret != -EWOULDBLOCK))
-+ vchiq_log_info(vchiq_arm_log_level,
-+ " ioctl instance %lx, cmd %s -> status %d, %ld",
-+ (unsigned long)instance,
-+ (_IOC_NR(cmd) <= VCHIQ_IOC_MAX) ?
-+ ioctl_names[_IOC_NR(cmd)] :
-+ "<invalid>",
-+ status, ret);
-+ else
-+ vchiq_log_trace(vchiq_arm_log_level,
-+ " ioctl instance %lx, cmd %s -> status %d, %ld",
-+ (unsigned long)instance,
-+ (_IOC_NR(cmd) <= VCHIQ_IOC_MAX) ?
-+ ioctl_names[_IOC_NR(cmd)] :
-+ "<invalid>",
-+ status, ret);
-+
-+ return ret;
-+}
-+
-+/****************************************************************************
-+*
-+* vchiq_open
-+*
-+***************************************************************************/
-+
-+static int
-+vchiq_open(struct inode *inode, struct file *file)
-+{
-+ int dev = iminor(inode) & 0x0f;
-+ vchiq_log_info(vchiq_arm_log_level, "vchiq_open");
-+ switch (dev) {
-+ case VCHIQ_MINOR: {
-+ int ret;
-+ VCHIQ_STATE_T *state = vchiq_get_state();
-+ VCHIQ_INSTANCE_T instance;
-+
-+ if (!state) {
-+ vchiq_log_error(vchiq_arm_log_level,
-+ "vchiq has no connection to VideoCore");
-+ return -ENOTCONN;
-+ }
-+
-+ instance = kzalloc(sizeof(*instance), GFP_KERNEL);
-+ if (!instance)
-+ return -ENOMEM;
-+
-+ instance->state = state;
-+ instance->pid = current->tgid;
-+
-+ ret = vchiq_proc_add_instance(instance);
-+ if (ret != 0) {
-+ kfree(instance);
-+ return ret;
-+ }
-+
-+ sema_init(&instance->insert_event, 0);
-+ sema_init(&instance->remove_event, 0);
-+ mutex_init(&instance->completion_mutex);
-+ mutex_init(&instance->bulk_waiter_list_mutex);
-+ INIT_LIST_HEAD(&instance->bulk_waiter_list);
-+
-+ file->private_data = instance;
-+ } break;
-+
-+ default:
-+ vchiq_log_error(vchiq_arm_log_level,
-+ "Unknown minor device: %d", dev);
-+ return -ENXIO;
-+ }
-+
-+ return 0;
-+}
-+
-+/****************************************************************************
-+*
-+* vchiq_release
-+*
-+***************************************************************************/
-+
-+static int
-+vchiq_release(struct inode *inode, struct file *file)
-+{
-+ int dev = iminor(inode) & 0x0f;
-+ int ret = 0;
-+ switch (dev) {
-+ case VCHIQ_MINOR: {
-+ VCHIQ_INSTANCE_T instance = file->private_data;
-+ VCHIQ_STATE_T *state = vchiq_get_state();
-+ VCHIQ_SERVICE_T *service;
-+ int i;
-+
-+ vchiq_log_info(vchiq_arm_log_level,
-+ "vchiq_release: instance=%lx",
-+ (unsigned long)instance);
-+
-+ if (!state) {
-+ ret = -EPERM;
-+ goto out;
-+ }
-+
-+ /* Ensure videocore is awake to allow termination. */
-+ vchiq_use_internal(instance->state, NULL,
-+ USE_TYPE_VCHIQ);
-+
-+ mutex_lock(&instance->completion_mutex);
-+
-+ /* Wake the completion thread and ask it to exit */
-+ instance->closing = 1;
-+ up(&instance->insert_event);
-+
-+ mutex_unlock(&instance->completion_mutex);
-+
-+ /* Wake the slot handler if the completion queue is full. */
-+ up(&instance->remove_event);
-+
-+ /* Mark all services for termination... */
-+ i = 0;
-+ while ((service = next_service_by_instance(state, instance,
-+ &i)) != NULL) {
-+ USER_SERVICE_T *user_service = service->base.userdata;
-+
-+ /* Wake the slot handler if the msg queue is full. */
-+ up(&user_service->remove_event);
-+
-+ vchiq_terminate_service_internal(service);
-+ unlock_service(service);
-+ }
-+
-+ /* ...and wait for them to die */
-+ i = 0;
-+ while ((service = next_service_by_instance(state, instance, &i))
-+ != NULL) {
-+ USER_SERVICE_T *user_service = service->base.userdata;
-+
-+ down(&service->remove_event);
-+
-+ BUG_ON(service->srvstate != VCHIQ_SRVSTATE_FREE);
-+
-+ spin_lock(&msg_queue_spinlock);
-+
-+ while (user_service->msg_remove !=
-+ user_service->msg_insert) {
-+ VCHIQ_HEADER_T *header = user_service->
-+ msg_queue[user_service->msg_remove &
-+ (MSG_QUEUE_SIZE - 1)];
-+ user_service->msg_remove++;
-+ spin_unlock(&msg_queue_spinlock);
-+
-+ if (header)
-+ vchiq_release_message(
-+ service->handle,
-+ header);
-+ spin_lock(&msg_queue_spinlock);
-+ }
-+
-+ spin_unlock(&msg_queue_spinlock);
-+
-+ unlock_service(service);
-+ }
-+
-+ /* Release any closed services */
-+ while (instance->completion_remove !=
-+ instance->completion_insert) {
-+ VCHIQ_COMPLETION_DATA_T *completion;
-+ VCHIQ_SERVICE_T *service;
-+ completion = &instance->completions[
-+ instance->completion_remove &
-+ (MAX_COMPLETIONS - 1)];
-+ service = completion->service_userdata;
-+ if (completion->reason == VCHIQ_SERVICE_CLOSED)
-+ unlock_service(service);
-+ instance->completion_remove++;
-+ }
-+
-+ /* Release the PEER service count. */
-+ vchiq_release_internal(instance->state, NULL);
-+
-+ {
-+ struct list_head *pos, *next;
-+ list_for_each_safe(pos, next,
-+ &instance->bulk_waiter_list) {
-+ struct bulk_waiter_node *waiter;
-+ waiter = list_entry(pos,
-+ struct bulk_waiter_node,
-+ list);
-+ list_del(pos);
-+ vchiq_log_info(vchiq_arm_log_level,
-+ "bulk_waiter - cleaned up %x "
-+ "for pid %d",
-+ (unsigned int)waiter, waiter->pid);
-+ kfree(waiter);
-+ }
-+ }
-+
-+ vchiq_proc_remove_instance(instance);
-+
-+ kfree(instance);
-+ file->private_data = NULL;
-+ } break;
-+
-+ default:
-+ vchiq_log_error(vchiq_arm_log_level,
-+ "Unknown minor device: %d", dev);
-+ ret = -ENXIO;
-+ }
-+
-+out:
-+ return ret;
-+}
-+
-+/****************************************************************************
-+*
-+* vchiq_dump
-+*
-+***************************************************************************/
-+
-+void
-+vchiq_dump(void *dump_context, const char *str, int len)
-+{
-+ DUMP_CONTEXT_T *context = (DUMP_CONTEXT_T *)dump_context;
-+
-+ if (context->actual < context->space) {
-+ int copy_bytes;
-+ if (context->offset > 0) {
-+ int skip_bytes = min(len, (int)context->offset);
-+ str += skip_bytes;
-+ len -= skip_bytes;
-+ context->offset -= skip_bytes;
-+ if (context->offset > 0)
-+ return;
-+ }
-+ copy_bytes = min(len, (int)(context->space - context->actual));
-+ if (copy_bytes == 0)
-+ return;
-+ if (copy_to_user(context->buf + context->actual, str,
-+ copy_bytes))
-+ context->actual = -EFAULT;
-+ context->actual += copy_bytes;
-+ len -= copy_bytes;
-+
-+ /* If tne terminating NUL is included in the length, then it
-+ ** marks the end of a line and should be replaced with a
-+ ** carriage return. */
-+ if ((len == 0) && (str[copy_bytes - 1] == '\0')) {
-+ char cr = '\n';
-+ if (copy_to_user(context->buf + context->actual - 1,
-+ &cr, 1))
-+ context->actual = -EFAULT;
-+ }
-+ }
-+}
-+
-+/****************************************************************************
-+*
-+* vchiq_dump_platform_instance_state
-+*
-+***************************************************************************/
-+
-+void
-+vchiq_dump_platform_instances(void *dump_context)
-+{
-+ VCHIQ_STATE_T *state = vchiq_get_state();
-+ char buf[80];
-+ int len;
-+ int i;
-+
-+ /* There is no list of instances, so instead scan all services,
-+ marking those that have been dumped. */
-+
-+ for (i = 0; i < state->unused_service; i++) {
-+ VCHIQ_SERVICE_T *service = state->services[i];
-+ VCHIQ_INSTANCE_T instance;
-+
-+ if (service && (service->base.callback == service_callback)) {
-+ instance = service->instance;
-+ if (instance)
-+ instance->mark = 0;
-+ }
-+ }
-+
-+ for (i = 0; i < state->unused_service; i++) {
-+ VCHIQ_SERVICE_T *service = state->services[i];
-+ VCHIQ_INSTANCE_T instance;
-+
-+ if (service && (service->base.callback == service_callback)) {
-+ instance = service->instance;
-+ if (instance && !instance->mark) {
-+ len = snprintf(buf, sizeof(buf),
-+ "Instance %x: pid %d,%s completions "
-+ "%d/%d",
-+ (unsigned int)instance, instance->pid,
-+ instance->connected ? " connected, " :
-+ "",
-+ instance->completion_insert -
-+ instance->completion_remove,
-+ MAX_COMPLETIONS);
-+
-+ vchiq_dump(dump_context, buf, len + 1);
-+
-+ instance->mark = 1;
-+ }
-+ }
-+ }
-+}
-+
-+/****************************************************************************
-+*
-+* vchiq_dump_platform_service_state
-+*
-+***************************************************************************/
-+
-+void
-+vchiq_dump_platform_service_state(void *dump_context, VCHIQ_SERVICE_T *service)
-+{
-+ USER_SERVICE_T *user_service = (USER_SERVICE_T *)service->base.userdata;
-+ char buf[80];
-+ int len;
-+
-+ len = snprintf(buf, sizeof(buf), " instance %x",
-+ (unsigned int)service->instance);
-+
-+ if ((service->base.callback == service_callback) &&
-+ user_service->is_vchi) {
-+ len += snprintf(buf + len, sizeof(buf) - len,
-+ ", %d/%d messages",
-+ user_service->msg_insert - user_service->msg_remove,
-+ MSG_QUEUE_SIZE);
-+
-+ if (user_service->dequeue_pending)
-+ len += snprintf(buf + len, sizeof(buf) - len,
-+ " (dequeue pending)");
-+ }
-+
-+ vchiq_dump(dump_context, buf, len + 1);
-+}
-+
-+/****************************************************************************
-+*
-+* dump_user_mem
-+*
-+***************************************************************************/
-+
-+static void
-+dump_phys_mem(void *virt_addr, uint32_t num_bytes)
-+{
-+ int rc;
-+ uint8_t *end_virt_addr = virt_addr + num_bytes;
-+ int num_pages;
-+ int offset;
-+ int end_offset;
-+ int page_idx;
-+ int prev_idx;
-+ struct page *page;
-+ struct page **pages;
-+ uint8_t *kmapped_virt_ptr;
-+
-+ /* Align virtAddr and endVirtAddr to 16 byte boundaries. */
-+
-+ virt_addr = (void *)((unsigned long)virt_addr & ~0x0fuL);
-+ end_virt_addr = (void *)(((unsigned long)end_virt_addr + 15uL) &
-+ ~0x0fuL);
-+
-+ offset = (int)(long)virt_addr & (PAGE_SIZE - 1);
-+ end_offset = (int)(long)end_virt_addr & (PAGE_SIZE - 1);
-+
-+ num_pages = (offset + num_bytes + PAGE_SIZE - 1) / PAGE_SIZE;
-+
-+ pages = kmalloc(sizeof(struct page *) * num_pages, GFP_KERNEL);
-+ if (pages == NULL) {
-+ vchiq_log_error(vchiq_arm_log_level,
-+ "Unable to allocation memory for %d pages\n",
-+ num_pages);
-+ return;
-+ }
-+
-+ down_read(¤t->mm->mmap_sem);
-+ rc = get_user_pages(current, /* task */
-+ current->mm, /* mm */
-+ (unsigned long)virt_addr, /* start */
-+ num_pages, /* len */
-+ 0, /* write */
-+ 0, /* force */
-+ pages, /* pages (array of page pointers) */
-+ NULL); /* vmas */
-+ up_read(¤t->mm->mmap_sem);
-+
-+ prev_idx = -1;
-+ page = NULL;
-+
-+ while (offset < end_offset) {
-+
-+ int page_offset = offset % PAGE_SIZE;
-+ page_idx = offset / PAGE_SIZE;
-+
-+ if (page_idx != prev_idx) {
-+
-+ if (page != NULL)
-+ kunmap(page);
-+ page = pages[page_idx];
-+ kmapped_virt_ptr = kmap(page);
-+
-+ prev_idx = page_idx;
-+ }
-+
-+ if (vchiq_arm_log_level >= VCHIQ_LOG_TRACE)
-+ vchiq_log_dump_mem("ph",
-+ (uint32_t)(unsigned long)&kmapped_virt_ptr[
-+ page_offset],
-+ &kmapped_virt_ptr[page_offset], 16);
-+
-+ offset += 16;
-+ }
-+ if (page != NULL)
-+ kunmap(page);
-+
-+ for (page_idx = 0; page_idx < num_pages; page_idx++)
-+ page_cache_release(pages[page_idx]);
-+
-+ kfree(pages);
-+}
-+
-+/****************************************************************************
-+*
-+* vchiq_read
-+*
-+***************************************************************************/
-+
-+static ssize_t
-+vchiq_read(struct file *file, char __user *buf,
-+ size_t count, loff_t *ppos)
-+{
-+ DUMP_CONTEXT_T context;
-+ context.buf = buf;
-+ context.actual = 0;
-+ context.space = count;
-+ context.offset = *ppos;
-+
-+ vchiq_dump_state(&context, &g_state);
-+
-+ *ppos += context.actual;
-+
-+ return context.actual;
-+}
-+
-+VCHIQ_STATE_T *
-+vchiq_get_state(void)
-+{
-+
-+ if (g_state.remote == NULL)
-+ printk(KERN_ERR "%s: g_state.remote == NULL\n", __func__);
-+ else if (g_state.remote->initialised != 1)
-+ printk(KERN_NOTICE "%s: g_state.remote->initialised != 1 (%d)\n",
-+ __func__, g_state.remote->initialised);
-+
-+ return ((g_state.remote != NULL) &&
-+ (g_state.remote->initialised == 1)) ? &g_state : NULL;
-+}
-+
-+static const struct file_operations
-+vchiq_fops = {
-+ .owner = THIS_MODULE,
-+ .unlocked_ioctl = vchiq_ioctl,
-+ .open = vchiq_open,
-+ .release = vchiq_release,
-+ .read = vchiq_read
-+};
-+
-+/*
-+ * Autosuspend related functionality
-+ */
-+
-+int
-+vchiq_videocore_wanted(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+ if (!arm_state)
-+ /* autosuspend not supported - always return wanted */
-+ return 1;
-+ else if (arm_state->blocked_count)
-+ return 1;
-+ else if (!arm_state->videocore_use_count)
-+ /* usage count zero - check for override unless we're forcing */
-+ if (arm_state->resume_blocked)
-+ return 0;
-+ else
-+ return vchiq_platform_videocore_wanted(state);
-+ else
-+ /* non-zero usage count - videocore still required */
-+ return 1;
-+}
-+
-+static VCHIQ_STATUS_T
-+vchiq_keepalive_vchiq_callback(VCHIQ_REASON_T reason,
-+ VCHIQ_HEADER_T *header,
-+ VCHIQ_SERVICE_HANDLE_T service_user,
-+ void *bulk_user)
-+{
-+ vchiq_log_error(vchiq_susp_log_level,
-+ "%s callback reason %d", __func__, reason);
-+ return 0;
-+}
-+
-+static int
-+vchiq_keepalive_thread_func(void *v)
-+{
-+ VCHIQ_STATE_T *state = (VCHIQ_STATE_T *) v;
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+
-+ VCHIQ_STATUS_T status;
-+ VCHIQ_INSTANCE_T instance;
-+ VCHIQ_SERVICE_HANDLE_T ka_handle;
-+
-+ VCHIQ_SERVICE_PARAMS_T params = {
-+ .fourcc = VCHIQ_MAKE_FOURCC('K', 'E', 'E', 'P'),
-+ .callback = vchiq_keepalive_vchiq_callback,
-+ .version = KEEPALIVE_VER,
-+ .version_min = KEEPALIVE_VER_MIN
-+ };
-+
-+ status = vchiq_initialise(&instance);
-+ if (status != VCHIQ_SUCCESS) {
-+ vchiq_log_error(vchiq_susp_log_level,
-+ "%s vchiq_initialise failed %d", __func__, status);
-+ goto exit;
-+ }
-+
-+ status = vchiq_connect(instance);
-+ if (status != VCHIQ_SUCCESS) {
-+ vchiq_log_error(vchiq_susp_log_level,
-+ "%s vchiq_connect failed %d", __func__, status);
-+ goto shutdown;
-+ }
-+
-+ status = vchiq_add_service(instance, ¶ms, &ka_handle);
-+ if (status != VCHIQ_SUCCESS) {
-+ vchiq_log_error(vchiq_susp_log_level,
-+ "%s vchiq_open_service failed %d", __func__, status);
-+ goto shutdown;
-+ }
-+
-+ while (1) {
-+ long rc = 0, uc = 0;
-+ if (wait_for_completion_interruptible(&arm_state->ka_evt)
-+ != 0) {
-+ vchiq_log_error(vchiq_susp_log_level,
-+ "%s interrupted", __func__);
-+ flush_signals(current);
-+ continue;
-+ }
-+
-+ /* read and clear counters. Do release_count then use_count to
-+ * prevent getting more releases than uses */
-+ rc = atomic_xchg(&arm_state->ka_release_count, 0);
-+ uc = atomic_xchg(&arm_state->ka_use_count, 0);
-+
-+ /* Call use/release service the requisite number of times.
-+ * Process use before release so use counts don't go negative */
-+ while (uc--) {
-+ atomic_inc(&arm_state->ka_use_ack_count);
-+ status = vchiq_use_service(ka_handle);
-+ if (status != VCHIQ_SUCCESS) {
-+ vchiq_log_error(vchiq_susp_log_level,
-+ "%s vchiq_use_service error %d",
-+ __func__, status);
-+ }
-+ }
-+ while (rc--) {
-+ status = vchiq_release_service(ka_handle);
-+ if (status != VCHIQ_SUCCESS) {
-+ vchiq_log_error(vchiq_susp_log_level,
-+ "%s vchiq_release_service error %d",
-+ __func__, status);
-+ }
-+ }
-+ }
-+
-+shutdown:
-+ vchiq_shutdown(instance);
-+exit:
-+ return 0;
-+}
-+
-+
-+
-+VCHIQ_STATUS_T
-+vchiq_arm_init_state(VCHIQ_STATE_T *state, VCHIQ_ARM_STATE_T *arm_state)
-+{
-+ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
-+
-+ if (arm_state) {
-+ rwlock_init(&arm_state->susp_res_lock);
-+
-+ init_completion(&arm_state->ka_evt);
-+ atomic_set(&arm_state->ka_use_count, 0);
-+ atomic_set(&arm_state->ka_use_ack_count, 0);
-+ atomic_set(&arm_state->ka_release_count, 0);
-+
-+ init_completion(&arm_state->vc_suspend_complete);
-+
-+ init_completion(&arm_state->vc_resume_complete);
-+ /* Initialise to 'done' state. We only want to block on resume
-+ * completion while videocore is suspended. */
-+ set_resume_state(arm_state, VC_RESUME_RESUMED);
-+
-+ init_completion(&arm_state->resume_blocker);
-+ /* Initialise to 'done' state. We only want to block on this
-+ * completion while resume is blocked */
-+ complete_all(&arm_state->resume_blocker);
-+
-+ init_completion(&arm_state->blocked_blocker);
-+ /* Initialise to 'done' state. We only want to block on this
-+ * completion while things are waiting on the resume blocker */
-+ complete_all(&arm_state->blocked_blocker);
-+
-+ arm_state->suspend_timer_timeout = SUSPEND_TIMER_TIMEOUT_MS;
-+ arm_state->suspend_timer_running = 0;
-+ init_timer(&arm_state->suspend_timer);
-+ arm_state->suspend_timer.data = (unsigned long)(state);
-+ arm_state->suspend_timer.function = suspend_timer_callback;
-+
-+ arm_state->first_connect = 0;
-+
-+ }
-+ return status;
-+}
-+
-+/*
-+** Functions to modify the state variables;
-+** set_suspend_state
-+** set_resume_state
-+**
-+** There are more state variables than we might like, so ensure they remain in
-+** step. Suspend and resume state are maintained separately, since most of
-+** these state machines can operate independently. However, there are a few
-+** states where state transitions in one state machine cause a reset to the
-+** other state machine. In addition, there are some completion events which
-+** need to occur on state machine reset and end-state(s), so these are also
-+** dealt with in these functions.
-+**
-+** In all states we set the state variable according to the input, but in some
-+** cases we perform additional steps outlined below;
-+**
-+** VC_SUSPEND_IDLE - Initialise the suspend completion at the same time.
-+** The suspend completion is completed after any suspend
-+** attempt. When we reset the state machine we also reset
-+** the completion. This reset occurs when videocore is
-+** resumed, and also if we initiate suspend after a suspend
-+** failure.
-+**
-+** VC_SUSPEND_IN_PROGRESS - This state is considered the point of no return for
-+** suspend - ie from this point on we must try to suspend
-+** before resuming can occur. We therefore also reset the
-+** resume state machine to VC_RESUME_IDLE in this state.
-+**
-+** VC_SUSPEND_SUSPENDED - Suspend has completed successfully. Also call
-+** complete_all on the suspend completion to notify
-+** anything waiting for suspend to happen.
-+**
-+** VC_SUSPEND_REJECTED - Videocore rejected suspend. Videocore will also
-+** initiate resume, so no need to alter resume state.
-+** We call complete_all on the suspend completion to notify
-+** of suspend rejection.
-+**
-+** VC_SUSPEND_FAILED - We failed to initiate videocore suspend. We notify the
-+** suspend completion and reset the resume state machine.
-+**
-+** VC_RESUME_IDLE - Initialise the resume completion at the same time. The
-+** resume completion is in it's 'done' state whenever
-+** videcore is running. Therfore, the VC_RESUME_IDLE state
-+** implies that videocore is suspended.
-+** Hence, any thread which needs to wait until videocore is
-+** running can wait on this completion - it will only block
-+** if videocore is suspended.
-+**
-+** VC_RESUME_RESUMED - Resume has completed successfully. Videocore is running.
-+** Call complete_all on the resume completion to unblock
-+** any threads waiting for resume. Also reset the suspend
-+** state machine to it's idle state.
-+**
-+** VC_RESUME_FAILED - Currently unused - no mechanism to fail resume exists.
-+*/
-+
-+inline void
-+set_suspend_state(VCHIQ_ARM_STATE_T *arm_state,
-+ enum vc_suspend_status new_state)
-+{
-+ /* set the state in all cases */
-+ arm_state->vc_suspend_state = new_state;
-+
-+ /* state specific additional actions */
-+ switch (new_state) {
-+ case VC_SUSPEND_FORCE_CANCELED:
-+ complete_all(&arm_state->vc_suspend_complete);
-+ break;
-+ case VC_SUSPEND_REJECTED:
-+ complete_all(&arm_state->vc_suspend_complete);
-+ break;
-+ case VC_SUSPEND_FAILED:
-+ complete_all(&arm_state->vc_suspend_complete);
-+ arm_state->vc_resume_state = VC_RESUME_RESUMED;
-+ complete_all(&arm_state->vc_resume_complete);
-+ break;
-+ case VC_SUSPEND_IDLE:
-+ INIT_COMPLETION(arm_state->vc_suspend_complete);
-+ break;
-+ case VC_SUSPEND_REQUESTED:
-+ break;
-+ case VC_SUSPEND_IN_PROGRESS:
-+ set_resume_state(arm_state, VC_RESUME_IDLE);
-+ break;
-+ case VC_SUSPEND_SUSPENDED:
-+ complete_all(&arm_state->vc_suspend_complete);
-+ break;
-+ default:
-+ BUG();
-+ break;
-+ }
-+}
-+
-+inline void
-+set_resume_state(VCHIQ_ARM_STATE_T *arm_state,
-+ enum vc_resume_status new_state)
-+{
-+ /* set the state in all cases */
-+ arm_state->vc_resume_state = new_state;
-+
-+ /* state specific additional actions */
-+ switch (new_state) {
-+ case VC_RESUME_FAILED:
-+ break;
-+ case VC_RESUME_IDLE:
-+ INIT_COMPLETION(arm_state->vc_resume_complete);
-+ break;
-+ case VC_RESUME_REQUESTED:
-+ break;
-+ case VC_RESUME_IN_PROGRESS:
-+ break;
-+ case VC_RESUME_RESUMED:
-+ complete_all(&arm_state->vc_resume_complete);
-+ set_suspend_state(arm_state, VC_SUSPEND_IDLE);
-+ break;
-+ default:
-+ BUG();
-+ break;
-+ }
-+}
-+
-+
-+/* should be called with the write lock held */
-+inline void
-+start_suspend_timer(VCHIQ_ARM_STATE_T *arm_state)
-+{
-+ del_timer(&arm_state->suspend_timer);
-+ arm_state->suspend_timer.expires = jiffies +
-+ msecs_to_jiffies(arm_state->
-+ suspend_timer_timeout);
-+ add_timer(&arm_state->suspend_timer);
-+ arm_state->suspend_timer_running = 1;
-+}
-+
-+/* should be called with the write lock held */
-+static inline void
-+stop_suspend_timer(VCHIQ_ARM_STATE_T *arm_state)
-+{
-+ if (arm_state->suspend_timer_running) {
-+ del_timer(&arm_state->suspend_timer);
-+ arm_state->suspend_timer_running = 0;
-+ }
-+}
-+
-+static inline int
-+need_resume(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+ return (arm_state->vc_suspend_state > VC_SUSPEND_IDLE) &&
-+ (arm_state->vc_resume_state < VC_RESUME_REQUESTED) &&
-+ vchiq_videocore_wanted(state);
-+}
-+
-+static int
-+block_resume(VCHIQ_ARM_STATE_T *arm_state)
-+{
-+ int status = VCHIQ_SUCCESS;
-+ const unsigned long timeout_val =
-+ msecs_to_jiffies(FORCE_SUSPEND_TIMEOUT_MS);
-+ int resume_count = 0;
-+
-+ /* Allow any threads which were blocked by the last force suspend to
-+ * complete if they haven't already. Only give this one shot; if
-+ * blocked_count is incremented after blocked_blocker is completed
-+ * (which only happens when blocked_count hits 0) then those threads
-+ * will have to wait until next time around */
-+ if (arm_state->blocked_count) {
-+ INIT_COMPLETION(arm_state->blocked_blocker);
-+ write_unlock_bh(&arm_state->susp_res_lock);
-+ vchiq_log_info(vchiq_susp_log_level, "%s wait for previously "
-+ "blocked clients", __func__);
-+ if (wait_for_completion_interruptible_timeout(
-+ &arm_state->blocked_blocker, timeout_val)
-+ <= 0) {
-+ vchiq_log_error(vchiq_susp_log_level, "%s wait for "
-+ "previously blocked clients failed" , __func__);
-+ status = VCHIQ_ERROR;
-+ write_lock_bh(&arm_state->susp_res_lock);
-+ goto out;
-+ }
-+ vchiq_log_info(vchiq_susp_log_level, "%s previously blocked "
-+ "clients resumed", __func__);
-+ write_lock_bh(&arm_state->susp_res_lock);
-+ }
-+
-+ /* We need to wait for resume to complete if it's in process */
-+ while (arm_state->vc_resume_state != VC_RESUME_RESUMED &&
-+ arm_state->vc_resume_state > VC_RESUME_IDLE) {
-+ if (resume_count > 1) {
-+ status = VCHIQ_ERROR;
-+ vchiq_log_error(vchiq_susp_log_level, "%s waited too "
-+ "many times for resume" , __func__);
-+ goto out;
-+ }
-+ write_unlock_bh(&arm_state->susp_res_lock);
-+ vchiq_log_info(vchiq_susp_log_level, "%s wait for resume",
-+ __func__);
-+ if (wait_for_completion_interruptible_timeout(
-+ &arm_state->vc_resume_complete, timeout_val)
-+ <= 0) {
-+ vchiq_log_error(vchiq_susp_log_level, "%s wait for "
-+ "resume failed (%s)", __func__,
-+ resume_state_names[arm_state->vc_resume_state +
-+ VC_RESUME_NUM_OFFSET]);
-+ status = VCHIQ_ERROR;
-+ write_lock_bh(&arm_state->susp_res_lock);
-+ goto out;
-+ }
-+ vchiq_log_info(vchiq_susp_log_level, "%s resumed", __func__);
-+ write_lock_bh(&arm_state->susp_res_lock);
-+ resume_count++;
-+ }
-+ INIT_COMPLETION(arm_state->resume_blocker);
-+ arm_state->resume_blocked = 1;
-+
-+out:
-+ return status;
-+}
-+
-+static inline void
-+unblock_resume(VCHIQ_ARM_STATE_T *arm_state)
-+{
-+ complete_all(&arm_state->resume_blocker);
-+ arm_state->resume_blocked = 0;
-+}
-+
-+/* Initiate suspend via slot handler. Should be called with the write lock
-+ * held */
-+VCHIQ_STATUS_T
-+vchiq_arm_vcsuspend(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_STATUS_T status = VCHIQ_ERROR;
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+
-+ if (!arm_state)
-+ goto out;
-+
-+ vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
-+ status = VCHIQ_SUCCESS;
-+
-+
-+ switch (arm_state->vc_suspend_state) {
-+ case VC_SUSPEND_REQUESTED:
-+ vchiq_log_info(vchiq_susp_log_level, "%s: suspend already "
-+ "requested", __func__);
-+ break;
-+ case VC_SUSPEND_IN_PROGRESS:
-+ vchiq_log_info(vchiq_susp_log_level, "%s: suspend already in "
-+ "progress", __func__);
-+ break;
-+
-+ default:
-+ /* We don't expect to be in other states, so log but continue
-+ * anyway */
-+ vchiq_log_error(vchiq_susp_log_level,
-+ "%s unexpected suspend state %s", __func__,
-+ suspend_state_names[arm_state->vc_suspend_state +
-+ VC_SUSPEND_NUM_OFFSET]);
-+ /* fall through */
-+ case VC_SUSPEND_REJECTED:
-+ case VC_SUSPEND_FAILED:
-+ /* Ensure any idle state actions have been run */
-+ set_suspend_state(arm_state, VC_SUSPEND_IDLE);
-+ /* fall through */
-+ case VC_SUSPEND_IDLE:
-+ vchiq_log_info(vchiq_susp_log_level,
-+ "%s: suspending", __func__);
-+ set_suspend_state(arm_state, VC_SUSPEND_REQUESTED);
-+ /* kick the slot handler thread to initiate suspend */
-+ request_poll(state, NULL, 0);
-+ break;
-+ }
-+
-+out:
-+ vchiq_log_trace(vchiq_susp_log_level, "%s exit %d", __func__, status);
-+ return status;
-+}
-+
-+void
-+vchiq_platform_check_suspend(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+ int susp = 0;
-+
-+ if (!arm_state)
-+ goto out;
-+
-+ vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
-+
-+ write_lock_bh(&arm_state->susp_res_lock);
-+ if (arm_state->vc_suspend_state == VC_SUSPEND_REQUESTED &&
-+ arm_state->vc_resume_state == VC_RESUME_RESUMED) {
-+ set_suspend_state(arm_state, VC_SUSPEND_IN_PROGRESS);
-+ susp = 1;
-+ }
-+ write_unlock_bh(&arm_state->susp_res_lock);
-+
-+ if (susp)
-+ vchiq_platform_suspend(state);
-+
-+out:
-+ vchiq_log_trace(vchiq_susp_log_level, "%s exit", __func__);
-+ return;
-+}
-+
-+
-+static void
-+output_timeout_error(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+ char service_err[50] = "";
-+ int vc_use_count = arm_state->videocore_use_count;
-+ int active_services = state->unused_service;
-+ int i;
-+
-+ if (!arm_state->videocore_use_count) {
-+ snprintf(service_err, 50, " Videocore usecount is 0");
-+ goto output_msg;
-+ }
-+ for (i = 0; i < active_services; i++) {
-+ VCHIQ_SERVICE_T *service_ptr = state->services[i];
-+ if (service_ptr && service_ptr->service_use_count &&
-+ (service_ptr->srvstate != VCHIQ_SRVSTATE_FREE)) {
-+ snprintf(service_err, 50, " %c%c%c%c(%d) service has "
-+ "use count %d%s", VCHIQ_FOURCC_AS_4CHARS(
-+ service_ptr->base.fourcc),
-+ service_ptr->client_id,
-+ service_ptr->service_use_count,
-+ service_ptr->service_use_count ==
-+ vc_use_count ? "" : " (+ more)");
-+ break;
-+ }
-+ }
-+
-+output_msg:
-+ vchiq_log_error(vchiq_susp_log_level,
-+ "timed out waiting for vc suspend (%d).%s",
-+ arm_state->autosuspend_override, service_err);
-+
-+}
-+
-+/* Try to get videocore into suspended state, regardless of autosuspend state.
-+** We don't actually force suspend, since videocore may get into a bad state
-+** if we force suspend at a bad time. Instead, we wait for autosuspend to
-+** determine a good point to suspend. If this doesn't happen within 100ms we
-+** report failure.
-+**
-+** Returns VCHIQ_SUCCESS if videocore suspended successfully, VCHIQ_RETRY if
-+** videocore failed to suspend in time or VCHIQ_ERROR if interrupted.
-+*/
-+VCHIQ_STATUS_T
-+vchiq_arm_force_suspend(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+ VCHIQ_STATUS_T status = VCHIQ_ERROR;
-+ long rc = 0;
-+ int repeat = -1;
-+
-+ if (!arm_state)
-+ goto out;
-+
-+ vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
-+
-+ write_lock_bh(&arm_state->susp_res_lock);
-+
-+ status = block_resume(arm_state);
-+ if (status != VCHIQ_SUCCESS)
-+ goto unlock;
-+ if (arm_state->vc_suspend_state == VC_SUSPEND_SUSPENDED) {
-+ /* Already suspended - just block resume and exit */
-+ vchiq_log_info(vchiq_susp_log_level, "%s already suspended",
-+ __func__);
-+ status = VCHIQ_SUCCESS;
-+ goto unlock;
-+ } else if (arm_state->vc_suspend_state <= VC_SUSPEND_IDLE) {
-+ /* initiate suspend immediately in the case that we're waiting
-+ * for the timeout */
-+ stop_suspend_timer(arm_state);
-+ if (!vchiq_videocore_wanted(state)) {
-+ vchiq_log_info(vchiq_susp_log_level, "%s videocore "
-+ "idle, initiating suspend", __func__);
-+ status = vchiq_arm_vcsuspend(state);
-+ } else if (arm_state->autosuspend_override <
-+ FORCE_SUSPEND_FAIL_MAX) {
-+ vchiq_log_info(vchiq_susp_log_level, "%s letting "
-+ "videocore go idle", __func__);
-+ status = VCHIQ_SUCCESS;
-+ } else {
-+ vchiq_log_warning(vchiq_susp_log_level, "%s failed too "
-+ "many times - attempting suspend", __func__);
-+ status = vchiq_arm_vcsuspend(state);
-+ }
-+ } else {
-+ vchiq_log_info(vchiq_susp_log_level, "%s videocore suspend "
-+ "in progress - wait for completion", __func__);
-+ status = VCHIQ_SUCCESS;
-+ }
-+
-+ /* Wait for suspend to happen due to system idle (not forced..) */
-+ if (status != VCHIQ_SUCCESS)
-+ goto unblock_resume;
-+
-+ do {
-+ write_unlock_bh(&arm_state->susp_res_lock);
-+
-+ rc = wait_for_completion_interruptible_timeout(
-+ &arm_state->vc_suspend_complete,
-+ msecs_to_jiffies(FORCE_SUSPEND_TIMEOUT_MS));
-+
-+ write_lock_bh(&arm_state->susp_res_lock);
-+ if (rc < 0) {
-+ vchiq_log_warning(vchiq_susp_log_level, "%s "
-+ "interrupted waiting for suspend", __func__);
-+ status = VCHIQ_ERROR;
-+ goto unblock_resume;
-+ } else if (rc == 0) {
-+ if (arm_state->vc_suspend_state > VC_SUSPEND_IDLE) {
-+ /* Repeat timeout once if in progress */
-+ if (repeat < 0) {
-+ repeat = 1;
-+ continue;
-+ }
-+ }
-+ arm_state->autosuspend_override++;
-+ output_timeout_error(state);
-+
-+ status = VCHIQ_RETRY;
-+ goto unblock_resume;
-+ }
-+ } while (0 < (repeat--));
-+
-+ /* Check and report state in case we need to abort ARM suspend */
-+ if (arm_state->vc_suspend_state != VC_SUSPEND_SUSPENDED) {
-+ status = VCHIQ_RETRY;
-+ vchiq_log_error(vchiq_susp_log_level,
-+ "%s videocore suspend failed (state %s)", __func__,
-+ suspend_state_names[arm_state->vc_suspend_state +
-+ VC_SUSPEND_NUM_OFFSET]);
-+ /* Reset the state only if it's still in an error state.
-+ * Something could have already initiated another suspend. */
-+ if (arm_state->vc_suspend_state < VC_SUSPEND_IDLE)
-+ set_suspend_state(arm_state, VC_SUSPEND_IDLE);
-+
-+ goto unblock_resume;
-+ }
-+
-+ /* successfully suspended - unlock and exit */
-+ goto unlock;
-+
-+unblock_resume:
-+ /* all error states need to unblock resume before exit */
-+ unblock_resume(arm_state);
-+
-+unlock:
-+ write_unlock_bh(&arm_state->susp_res_lock);
-+
-+out:
-+ vchiq_log_trace(vchiq_susp_log_level, "%s exit %d", __func__, status);
-+ return status;
-+}
-+
-+void
-+vchiq_check_suspend(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+
-+ if (!arm_state)
-+ goto out;
-+
-+ vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
-+
-+ write_lock_bh(&arm_state->susp_res_lock);
-+ if (arm_state->vc_suspend_state != VC_SUSPEND_SUSPENDED &&
-+ arm_state->first_connect &&
-+ !vchiq_videocore_wanted(state)) {
-+ vchiq_arm_vcsuspend(state);
-+ }
-+ write_unlock_bh(&arm_state->susp_res_lock);
-+
-+out:
-+ vchiq_log_trace(vchiq_susp_log_level, "%s exit", __func__);
-+ return;
-+}
-+
-+
-+int
-+vchiq_arm_allow_resume(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+ int resume = 0;
-+ int ret = -1;
-+
-+ if (!arm_state)
-+ goto out;
-+
-+ vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
-+
-+ write_lock_bh(&arm_state->susp_res_lock);
-+ unblock_resume(arm_state);
-+ resume = vchiq_check_resume(state);
-+ write_unlock_bh(&arm_state->susp_res_lock);
-+
-+ if (resume) {
-+ if (wait_for_completion_interruptible(
-+ &arm_state->vc_resume_complete) < 0) {
-+ vchiq_log_error(vchiq_susp_log_level,
-+ "%s interrupted", __func__);
-+ /* failed, cannot accurately derive suspend
-+ * state, so exit early. */
-+ goto out;
-+ }
-+ }
-+
-+ read_lock_bh(&arm_state->susp_res_lock);
-+ if (arm_state->vc_suspend_state == VC_SUSPEND_SUSPENDED) {
-+ vchiq_log_info(vchiq_susp_log_level,
-+ "%s: Videocore remains suspended", __func__);
-+ } else {
-+ vchiq_log_info(vchiq_susp_log_level,
-+ "%s: Videocore resumed", __func__);
-+ ret = 0;
-+ }
-+ read_unlock_bh(&arm_state->susp_res_lock);
-+out:
-+ vchiq_log_trace(vchiq_susp_log_level, "%s exit %d", __func__, ret);
-+ return ret;
-+}
-+
-+/* This function should be called with the write lock held */
-+int
-+vchiq_check_resume(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+ int resume = 0;
-+
-+ if (!arm_state)
-+ goto out;
-+
-+ vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
-+
-+ if (need_resume(state)) {
-+ set_resume_state(arm_state, VC_RESUME_REQUESTED);
-+ request_poll(state, NULL, 0);
-+ resume = 1;
-+ }
-+
-+out:
-+ vchiq_log_trace(vchiq_susp_log_level, "%s exit", __func__);
-+ return resume;
-+}
-+
-+void
-+vchiq_platform_check_resume(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+ int res = 0;
-+
-+ if (!arm_state)
-+ goto out;
-+
-+ vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
-+
-+ write_lock_bh(&arm_state->susp_res_lock);
-+ if (arm_state->wake_address == 0) {
-+ vchiq_log_info(vchiq_susp_log_level,
-+ "%s: already awake", __func__);
-+ goto unlock;
-+ }
-+ if (arm_state->vc_resume_state == VC_RESUME_IN_PROGRESS) {
-+ vchiq_log_info(vchiq_susp_log_level,
-+ "%s: already resuming", __func__);
-+ goto unlock;
-+ }
-+
-+ if (arm_state->vc_resume_state == VC_RESUME_REQUESTED) {
-+ set_resume_state(arm_state, VC_RESUME_IN_PROGRESS);
-+ res = 1;
-+ } else
-+ vchiq_log_trace(vchiq_susp_log_level,
-+ "%s: not resuming (resume state %s)", __func__,
-+ resume_state_names[arm_state->vc_resume_state +
-+ VC_RESUME_NUM_OFFSET]);
-+
-+unlock:
-+ write_unlock_bh(&arm_state->susp_res_lock);
-+
-+ if (res)
-+ vchiq_platform_resume(state);
-+
-+out:
-+ vchiq_log_trace(vchiq_susp_log_level, "%s exit", __func__);
-+ return;
-+
-+}
-+
-+
-+
-+VCHIQ_STATUS_T
-+vchiq_use_internal(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service,
-+ enum USE_TYPE_E use_type)
-+{
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+ VCHIQ_STATUS_T ret = VCHIQ_SUCCESS;
-+ char entity[16];
-+ int *entity_uc;
-+ int local_uc, local_entity_uc;
-+
-+ if (!arm_state)
-+ goto out;
-+
-+ vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
-+
-+ if (use_type == USE_TYPE_VCHIQ) {
-+ sprintf(entity, "VCHIQ: ");
-+ entity_uc = &arm_state->peer_use_count;
-+ } else if (service) {
-+ sprintf(entity, "%c%c%c%c:%03d",
-+ VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc),
-+ service->client_id);
-+ entity_uc = &service->service_use_count;
-+ } else {
-+ vchiq_log_error(vchiq_susp_log_level, "%s null service "
-+ "ptr", __func__);
-+ ret = VCHIQ_ERROR;
-+ goto out;
-+ }
-+
-+ write_lock_bh(&arm_state->susp_res_lock);
-+ while (arm_state->resume_blocked) {
-+ /* If we call 'use' while force suspend is waiting for suspend,
-+ * then we're about to block the thread which the force is
-+ * waiting to complete, so we're bound to just time out. In this
-+ * case, set the suspend state such that the wait will be
-+ * canceled, so we can complete as quickly as possible. */
-+ if (arm_state->resume_blocked && arm_state->vc_suspend_state ==
-+ VC_SUSPEND_IDLE) {
-+ set_suspend_state(arm_state, VC_SUSPEND_FORCE_CANCELED);
-+ break;
-+ }
-+ /* If suspend is already in progress then we need to block */
-+ if (!try_wait_for_completion(&arm_state->resume_blocker)) {
-+ /* Indicate that there are threads waiting on the resume
-+ * blocker. These need to be allowed to complete before
-+ * a _second_ call to force suspend can complete,
-+ * otherwise low priority threads might never actually
-+ * continue */
-+ arm_state->blocked_count++;
-+ write_unlock_bh(&arm_state->susp_res_lock);
-+ vchiq_log_info(vchiq_susp_log_level, "%s %s resume "
-+ "blocked - waiting...", __func__, entity);
-+ if (wait_for_completion_killable(
-+ &arm_state->resume_blocker) != 0) {
-+ vchiq_log_error(vchiq_susp_log_level, "%s %s "
-+ "wait for resume blocker interrupted",
-+ __func__, entity);
-+ ret = VCHIQ_ERROR;
-+ write_lock_bh(&arm_state->susp_res_lock);
-+ arm_state->blocked_count--;
-+ write_unlock_bh(&arm_state->susp_res_lock);
-+ goto out;
-+ }
-+ vchiq_log_info(vchiq_susp_log_level, "%s %s resume "
-+ "unblocked", __func__, entity);
-+ write_lock_bh(&arm_state->susp_res_lock);
-+ if (--arm_state->blocked_count == 0)
-+ complete_all(&arm_state->blocked_blocker);
-+ }
-+ }
-+
-+ stop_suspend_timer(arm_state);
-+
-+ local_uc = ++arm_state->videocore_use_count;
-+ local_entity_uc = ++(*entity_uc);
-+
-+ /* If there's a pending request which hasn't yet been serviced then
-+ * just clear it. If we're past VC_SUSPEND_REQUESTED state then
-+ * vc_resume_complete will block until we either resume or fail to
-+ * suspend */
-+ if (arm_state->vc_suspend_state <= VC_SUSPEND_REQUESTED)
-+ set_suspend_state(arm_state, VC_SUSPEND_IDLE);
-+
-+ if ((use_type != USE_TYPE_SERVICE_NO_RESUME) && need_resume(state)) {
-+ set_resume_state(arm_state, VC_RESUME_REQUESTED);
-+ vchiq_log_info(vchiq_susp_log_level,
-+ "%s %s count %d, state count %d",
-+ __func__, entity, local_entity_uc, local_uc);
-+ request_poll(state, NULL, 0);
-+ } else
-+ vchiq_log_trace(vchiq_susp_log_level,
-+ "%s %s count %d, state count %d",
-+ __func__, entity, *entity_uc, local_uc);
-+
-+
-+ write_unlock_bh(&arm_state->susp_res_lock);
-+
-+ /* Completion is in a done state when we're not suspended, so this won't
-+ * block for the non-suspended case. */
-+ if (!try_wait_for_completion(&arm_state->vc_resume_complete)) {
-+ vchiq_log_info(vchiq_susp_log_level, "%s %s wait for resume",
-+ __func__, entity);
-+ if (wait_for_completion_killable(
-+ &arm_state->vc_resume_complete) != 0) {
-+ vchiq_log_error(vchiq_susp_log_level, "%s %s wait for "
-+ "resume interrupted", __func__, entity);
-+ ret = VCHIQ_ERROR;
-+ goto out;
-+ }
-+ vchiq_log_info(vchiq_susp_log_level, "%s %s resumed", __func__,
-+ entity);
-+ }
-+
-+ if (ret == VCHIQ_SUCCESS) {
-+ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
-+ long ack_cnt = atomic_xchg(&arm_state->ka_use_ack_count, 0);
-+ while (ack_cnt && (status == VCHIQ_SUCCESS)) {
-+ /* Send the use notify to videocore */
-+ status = vchiq_send_remote_use_active(state);
-+ if (status == VCHIQ_SUCCESS)
-+ ack_cnt--;
-+ else
-+ atomic_add(ack_cnt,
-+ &arm_state->ka_use_ack_count);
-+ }
-+ }
-+
-+out:
-+ vchiq_log_trace(vchiq_susp_log_level, "%s exit %d", __func__, ret);
-+ return ret;
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_release_internal(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service)
-+{
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+ VCHIQ_STATUS_T ret = VCHIQ_SUCCESS;
-+ char entity[16];
-+ int *entity_uc;
-+ int local_uc, local_entity_uc;
-+
-+ if (!arm_state)
-+ goto out;
-+
-+ vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
-+
-+ if (service) {
-+ sprintf(entity, "%c%c%c%c:%03d",
-+ VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc),
-+ service->client_id);
-+ entity_uc = &service->service_use_count;
-+ } else {
-+ sprintf(entity, "PEER: ");
-+ entity_uc = &arm_state->peer_use_count;
-+ }
-+
-+ write_lock_bh(&arm_state->susp_res_lock);
-+ if (!arm_state->videocore_use_count || !(*entity_uc)) {
-+ /* Don't use BUG_ON - don't allow user thread to crash kernel */
-+ WARN_ON(!arm_state->videocore_use_count);
-+ WARN_ON(!(*entity_uc));
-+ ret = VCHIQ_ERROR;
-+ goto unlock;
-+ }
-+ local_uc = --arm_state->videocore_use_count;
-+ local_entity_uc = --(*entity_uc);
-+
-+ if (!vchiq_videocore_wanted(state)) {
-+ if (vchiq_platform_use_suspend_timer() &&
-+ !arm_state->resume_blocked) {
-+ /* Only use the timer if we're not trying to force
-+ * suspend (=> resume_blocked) */
-+ start_suspend_timer(arm_state);
-+ } else {
-+ vchiq_log_info(vchiq_susp_log_level,
-+ "%s %s count %d, state count %d - suspending",
-+ __func__, entity, *entity_uc,
-+ arm_state->videocore_use_count);
-+ vchiq_arm_vcsuspend(state);
-+ }
-+ } else
-+ vchiq_log_trace(vchiq_susp_log_level,
-+ "%s %s count %d, state count %d",
-+ __func__, entity, *entity_uc,
-+ arm_state->videocore_use_count);
-+
-+unlock:
-+ write_unlock_bh(&arm_state->susp_res_lock);
-+
-+out:
-+ vchiq_log_trace(vchiq_susp_log_level, "%s exit %d", __func__, ret);
-+ return ret;
-+}
-+
-+void
-+vchiq_on_remote_use(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+ vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
-+ atomic_inc(&arm_state->ka_use_count);
-+ complete(&arm_state->ka_evt);
-+}
-+
-+void
-+vchiq_on_remote_release(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+ vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
-+ atomic_inc(&arm_state->ka_release_count);
-+ complete(&arm_state->ka_evt);
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_use_service_internal(VCHIQ_SERVICE_T *service)
-+{
-+ return vchiq_use_internal(service->state, service, USE_TYPE_SERVICE);
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_release_service_internal(VCHIQ_SERVICE_T *service)
-+{
-+ return vchiq_release_internal(service->state, service);
-+}
-+
-+static void suspend_timer_callback(unsigned long context)
-+{
-+ VCHIQ_STATE_T *state = (VCHIQ_STATE_T *)context;
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+ if (!arm_state)
-+ goto out;
-+ vchiq_log_info(vchiq_susp_log_level,
-+ "%s - suspend timer expired - check suspend", __func__);
-+ vchiq_check_suspend(state);
-+out:
-+ return;
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_use_service_no_resume(VCHIQ_SERVICE_HANDLE_T handle)
-+{
-+ VCHIQ_STATUS_T ret = VCHIQ_ERROR;
-+ VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
-+ if (service) {
-+ ret = vchiq_use_internal(service->state, service,
-+ USE_TYPE_SERVICE_NO_RESUME);
-+ unlock_service(service);
-+ }
-+ return ret;
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_use_service(VCHIQ_SERVICE_HANDLE_T handle)
-+{
-+ VCHIQ_STATUS_T ret = VCHIQ_ERROR;
-+ VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
-+ if (service) {
-+ ret = vchiq_use_internal(service->state, service,
-+ USE_TYPE_SERVICE);
-+ unlock_service(service);
-+ }
-+ return ret;
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_release_service(VCHIQ_SERVICE_HANDLE_T handle)
-+{
-+ VCHIQ_STATUS_T ret = VCHIQ_ERROR;
-+ VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
-+ if (service) {
-+ ret = vchiq_release_internal(service->state, service);
-+ unlock_service(service);
-+ }
-+ return ret;
-+}
-+
-+void
-+vchiq_dump_service_use_state(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+ int i, j = 0;
-+ /* Only dump 64 services */
-+ static const int local_max_services = 64;
-+ /* If there's more than 64 services, only dump ones with
-+ * non-zero counts */
-+ int only_nonzero = 0;
-+ static const char *nz = "<-- preventing suspend";
-+
-+ enum vc_suspend_status vc_suspend_state;
-+ enum vc_resume_status vc_resume_state;
-+ int peer_count;
-+ int vc_use_count;
-+ int active_services;
-+ struct service_data_struct {
-+ int fourcc;
-+ int clientid;
-+ int use_count;
-+ } service_data[local_max_services];
-+
-+ if (!arm_state)
-+ return;
-+
-+ read_lock_bh(&arm_state->susp_res_lock);
-+ vc_suspend_state = arm_state->vc_suspend_state;
-+ vc_resume_state = arm_state->vc_resume_state;
-+ peer_count = arm_state->peer_use_count;
-+ vc_use_count = arm_state->videocore_use_count;
-+ active_services = state->unused_service;
-+ if (active_services > local_max_services)
-+ only_nonzero = 1;
-+
-+ for (i = 0; (i < active_services) && (j < local_max_services); i++) {
-+ VCHIQ_SERVICE_T *service_ptr = state->services[i];
-+ if (!service_ptr)
-+ continue;
-+
-+ if (only_nonzero && !service_ptr->service_use_count)
-+ continue;
-+
-+ if (service_ptr->srvstate != VCHIQ_SRVSTATE_FREE) {
-+ service_data[j].fourcc = service_ptr->base.fourcc;
-+ service_data[j].clientid = service_ptr->client_id;
-+ service_data[j++].use_count = service_ptr->
-+ service_use_count;
-+ }
-+ }
-+
-+ read_unlock_bh(&arm_state->susp_res_lock);
-+
-+ vchiq_log_warning(vchiq_susp_log_level,
-+ "-- Videcore suspend state: %s --",
-+ suspend_state_names[vc_suspend_state + VC_SUSPEND_NUM_OFFSET]);
-+ vchiq_log_warning(vchiq_susp_log_level,
-+ "-- Videcore resume state: %s --",
-+ resume_state_names[vc_resume_state + VC_RESUME_NUM_OFFSET]);
-+
-+ if (only_nonzero)
-+ vchiq_log_warning(vchiq_susp_log_level, "Too many active "
-+ "services (%d). Only dumping up to first %d services "
-+ "with non-zero use-count", active_services,
-+ local_max_services);
-+
-+ for (i = 0; i < j; i++) {
-+ vchiq_log_warning(vchiq_susp_log_level,
-+ "----- %c%c%c%c:%d service count %d %s",
-+ VCHIQ_FOURCC_AS_4CHARS(service_data[i].fourcc),
-+ service_data[i].clientid,
-+ service_data[i].use_count,
-+ service_data[i].use_count ? nz : "");
-+ }
-+ vchiq_log_warning(vchiq_susp_log_level,
-+ "----- VCHIQ use count count %d", peer_count);
-+ vchiq_log_warning(vchiq_susp_log_level,
-+ "--- Overall vchiq instance use count %d", vc_use_count);
-+
-+ vchiq_dump_platform_use_state(state);
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_check_service(VCHIQ_SERVICE_T *service)
-+{
-+ VCHIQ_ARM_STATE_T *arm_state;
-+ VCHIQ_STATUS_T ret = VCHIQ_ERROR;
-+
-+ if (!service || !service->state)
-+ goto out;
-+
-+ vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
-+
-+ arm_state = vchiq_platform_get_arm_state(service->state);
-+
-+ read_lock_bh(&arm_state->susp_res_lock);
-+ if (service->service_use_count)
-+ ret = VCHIQ_SUCCESS;
-+ read_unlock_bh(&arm_state->susp_res_lock);
-+
-+ if (ret == VCHIQ_ERROR) {
-+ vchiq_log_error(vchiq_susp_log_level,
-+ "%s ERROR - %c%c%c%c:%d service count %d, "
-+ "state count %d, videocore suspend state %s", __func__,
-+ VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc),
-+ service->client_id, service->service_use_count,
-+ arm_state->videocore_use_count,
-+ suspend_state_names[arm_state->vc_suspend_state +
-+ VC_SUSPEND_NUM_OFFSET]);
-+ vchiq_dump_service_use_state(service->state);
-+ }
-+out:
-+ return ret;
-+}
-+
-+/* stub functions */
-+void vchiq_on_remote_use_active(VCHIQ_STATE_T *state)
-+{
-+ (void)state;
-+}
-+
-+void vchiq_platform_conn_state_changed(VCHIQ_STATE_T *state,
-+ VCHIQ_CONNSTATE_T oldstate, VCHIQ_CONNSTATE_T newstate)
-+{
-+ VCHIQ_ARM_STATE_T *arm_state = vchiq_platform_get_arm_state(state);
-+ vchiq_log_info(vchiq_susp_log_level, "%d: %s->%s", state->id,
-+ get_conn_state_name(oldstate), get_conn_state_name(newstate));
-+ if (state->conn_state == VCHIQ_CONNSTATE_CONNECTED) {
-+ write_lock_bh(&arm_state->susp_res_lock);
-+ if (!arm_state->first_connect) {
-+ char threadname[10];
-+ arm_state->first_connect = 1;
-+ write_unlock_bh(&arm_state->susp_res_lock);
-+ snprintf(threadname, sizeof(threadname), "VCHIQka-%d",
-+ state->id);
-+ arm_state->ka_thread = kthread_create(
-+ &vchiq_keepalive_thread_func,
-+ (void *)state,
-+ threadname);
-+ if (arm_state->ka_thread == NULL) {
-+ vchiq_log_error(vchiq_susp_log_level,
-+ "vchiq: FATAL: couldn't create thread %s",
-+ threadname);
-+ } else {
-+ wake_up_process(arm_state->ka_thread);
-+ }
-+ } else
-+ write_unlock_bh(&arm_state->susp_res_lock);
-+ }
-+}
-+
-+
-+/****************************************************************************
-+*
-+* vchiq_init - called when the module is loaded.
-+*
-+***************************************************************************/
-+
-+static int __init
-+vchiq_init(void)
-+{
-+ int err;
-+ void *ptr_err;
-+
-+ /* create proc entries */
-+ err = vchiq_proc_init();
-+ if (err != 0)
-+ goto failed_proc_init;
-+
-+ err = alloc_chrdev_region(&vchiq_devid, VCHIQ_MINOR, 1, DEVICE_NAME);
-+ if (err != 0) {
-+ vchiq_log_error(vchiq_arm_log_level,
-+ "Unable to allocate device number");
-+ goto failed_alloc_chrdev;
-+ }
-+ cdev_init(&vchiq_cdev, &vchiq_fops);
-+ vchiq_cdev.owner = THIS_MODULE;
-+ err = cdev_add(&vchiq_cdev, vchiq_devid, 1);
-+ if (err != 0) {
-+ vchiq_log_error(vchiq_arm_log_level,
-+ "Unable to register device");
-+ goto failed_cdev_add;
-+ }
-+
-+ /* create sysfs entries */
-+ vchiq_class = class_create(THIS_MODULE, DEVICE_NAME);
-+ ptr_err = vchiq_class;
-+ if (IS_ERR(ptr_err))
-+ goto failed_class_create;
-+
-+ vchiq_dev = device_create(vchiq_class, NULL,
-+ vchiq_devid, NULL, "vchiq");
-+ ptr_err = vchiq_dev;
-+ if (IS_ERR(ptr_err))
-+ goto failed_device_create;
-+
-+ err = vchiq_platform_init(&g_state);
-+ if (err != 0)
-+ goto failed_platform_init;
-+
-+ vchiq_log_info(vchiq_arm_log_level,
-+ "vchiq: initialised - version %d (min %d), device %d.%d",
-+ VCHIQ_VERSION, VCHIQ_VERSION_MIN,
-+ MAJOR(vchiq_devid), MINOR(vchiq_devid));
-+
-+ return 0;
-+
-+failed_platform_init:
-+ device_destroy(vchiq_class, vchiq_devid);
-+failed_device_create:
-+ class_destroy(vchiq_class);
-+failed_class_create:
-+ cdev_del(&vchiq_cdev);
-+ err = PTR_ERR(ptr_err);
-+failed_cdev_add:
-+ unregister_chrdev_region(vchiq_devid, 1);
-+failed_alloc_chrdev:
-+ vchiq_proc_deinit();
-+failed_proc_init:
-+ vchiq_log_warning(vchiq_arm_log_level, "could not load vchiq");
-+ return err;
-+}
-+
-+static int vchiq_instance_get_use_count(VCHIQ_INSTANCE_T instance)
-+{
-+ VCHIQ_SERVICE_T *service;
-+ int use_count = 0, i;
-+ i = 0;
-+ while ((service = next_service_by_instance(instance->state,
-+ instance, &i)) != NULL) {
-+ use_count += service->service_use_count;
-+ unlock_service(service);
-+ }
-+ return use_count;
-+}
-+
-+/* read the per-process use-count */
-+static int proc_read_use_count(char *page, char **start,
-+ off_t off, int count,
-+ int *eof, void *data)
-+{
-+ VCHIQ_INSTANCE_T instance = data;
-+ int len, use_count;
-+
-+ use_count = vchiq_instance_get_use_count(instance);
-+ len = snprintf(page+off, count, "%d\n", use_count);
-+
-+ return len;
-+}
-+
-+/* add an instance (process) to the proc entries */
-+static int vchiq_proc_add_instance(VCHIQ_INSTANCE_T instance)
-+{
-+#if 1
-+ return 0;
-+#else
-+ char pidstr[32];
-+ struct proc_dir_entry *top, *use_count;
-+ struct proc_dir_entry *clients = vchiq_clients_top();
-+ int pid = instance->pid;
-+
-+ snprintf(pidstr, sizeof(pidstr), "%d", pid);
-+ top = proc_mkdir(pidstr, clients);
-+ if (!top)
-+ goto fail_top;
-+
-+ use_count = create_proc_read_entry("use_count",
-+ 0444, top,
-+ proc_read_use_count,
-+ instance);
-+ if (!use_count)
-+ goto fail_use_count;
-+
-+ instance->proc_entry = top;
-+
-+ return 0;
-+
-+fail_use_count:
-+ remove_proc_entry(top->name, clients);
-+fail_top:
-+ return -ENOMEM;
-+#endif
-+}
-+
-+static void vchiq_proc_remove_instance(VCHIQ_INSTANCE_T instance)
-+{
-+#if 0
-+ struct proc_dir_entry *clients = vchiq_clients_top();
-+ remove_proc_entry("use_count", instance->proc_entry);
-+ remove_proc_entry(instance->proc_entry->name, clients);
-+#endif
-+}
-+
-+/****************************************************************************
-+*
-+* vchiq_exit - called when the module is unloaded.
-+*
-+***************************************************************************/
-+
-+static void __exit
-+vchiq_exit(void)
-+{
-+ vchiq_platform_exit(&g_state);
-+ device_destroy(vchiq_class, vchiq_devid);
-+ class_destroy(vchiq_class);
-+ cdev_del(&vchiq_cdev);
-+ unregister_chrdev_region(vchiq_devid, 1);
-+}
-+
-+module_init(vchiq_init);
-+module_exit(vchiq_exit);
-+MODULE_LICENSE("GPL");
-+MODULE_AUTHOR("Broadcom Corporation");
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.h b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.h
-new file mode 100644
-index 0000000..75ad4c6
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_arm.h
-@@ -0,0 +1,212 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef VCHIQ_ARM_H
-+#define VCHIQ_ARM_H
-+
-+#include <linux/mutex.h>
-+#include <linux/semaphore.h>
-+#include <linux/atomic.h>
-+#include "vchiq_core.h"
-+
-+
-+enum vc_suspend_status {
-+ VC_SUSPEND_FORCE_CANCELED = -3, /* Force suspend canceled, too busy */
-+ VC_SUSPEND_REJECTED = -2, /* Videocore rejected suspend request */
-+ VC_SUSPEND_FAILED = -1, /* Videocore suspend failed */
-+ VC_SUSPEND_IDLE = 0, /* VC active, no suspend actions */
-+ VC_SUSPEND_REQUESTED, /* User has requested suspend */
-+ VC_SUSPEND_IN_PROGRESS, /* Slot handler has recvd suspend request */
-+ VC_SUSPEND_SUSPENDED /* Videocore suspend succeeded */
-+};
-+
-+enum vc_resume_status {
-+ VC_RESUME_FAILED = -1, /* Videocore resume failed */
-+ VC_RESUME_IDLE = 0, /* VC suspended, no resume actions */
-+ VC_RESUME_REQUESTED, /* User has requested resume */
-+ VC_RESUME_IN_PROGRESS, /* Slot handler has received resume request */
-+ VC_RESUME_RESUMED /* Videocore resumed successfully (active) */
-+};
-+
-+
-+enum USE_TYPE_E {
-+ USE_TYPE_SERVICE,
-+ USE_TYPE_SERVICE_NO_RESUME,
-+ USE_TYPE_VCHIQ
-+};
-+
-+
-+
-+typedef struct vchiq_arm_state_struct {
-+ /* Keepalive-related data */
-+ struct task_struct *ka_thread;
-+ struct completion ka_evt;
-+ atomic_t ka_use_count;
-+ atomic_t ka_use_ack_count;
-+ atomic_t ka_release_count;
-+
-+ struct completion vc_suspend_complete;
-+ struct completion vc_resume_complete;
-+
-+ rwlock_t susp_res_lock;
-+ enum vc_suspend_status vc_suspend_state;
-+ enum vc_resume_status vc_resume_state;
-+
-+ unsigned int wake_address;
-+
-+ struct timer_list suspend_timer;
-+ int suspend_timer_timeout;
-+ int suspend_timer_running;
-+
-+ /* Global use count for videocore.
-+ ** This is equal to the sum of the use counts for all services. When
-+ ** this hits zero the videocore suspend procedure will be initiated.
-+ */
-+ int videocore_use_count;
-+
-+ /* Use count to track requests from videocore peer.
-+ ** This use count is not associated with a service, so needs to be
-+ ** tracked separately with the state.
-+ */
-+ int peer_use_count;
-+
-+ /* Flag to indicate whether resume is blocked. This happens when the
-+ ** ARM is suspending
-+ */
-+ struct completion resume_blocker;
-+ int resume_blocked;
-+ struct completion blocked_blocker;
-+ int blocked_count;
-+
-+ int autosuspend_override;
-+
-+ /* Flag to indicate that the first vchiq connect has made it through.
-+ ** This means that both sides should be fully ready, and we should
-+ ** be able to suspend after this point.
-+ */
-+ int first_connect;
-+
-+ unsigned long long suspend_start_time;
-+ unsigned long long sleep_start_time;
-+ unsigned long long resume_start_time;
-+ unsigned long long last_wake_time;
-+
-+} VCHIQ_ARM_STATE_T;
-+
-+extern int vchiq_arm_log_level;
-+extern int vchiq_susp_log_level;
-+
-+extern int __init
-+vchiq_platform_init(VCHIQ_STATE_T *state);
-+
-+extern void __exit
-+vchiq_platform_exit(VCHIQ_STATE_T *state);
-+
-+extern VCHIQ_STATE_T *
-+vchiq_get_state(void);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_arm_vcsuspend(VCHIQ_STATE_T *state);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_arm_force_suspend(VCHIQ_STATE_T *state);
-+
-+extern int
-+vchiq_arm_allow_resume(VCHIQ_STATE_T *state);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_arm_vcresume(VCHIQ_STATE_T *state);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_arm_init_state(VCHIQ_STATE_T *state, VCHIQ_ARM_STATE_T *arm_state);
-+
-+extern int
-+vchiq_check_resume(VCHIQ_STATE_T *state);
-+
-+extern void
-+vchiq_check_suspend(VCHIQ_STATE_T *state);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_use_service(VCHIQ_SERVICE_HANDLE_T handle);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_release_service(VCHIQ_SERVICE_HANDLE_T handle);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_check_service(VCHIQ_SERVICE_T *service);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_platform_suspend(VCHIQ_STATE_T *state);
-+
-+extern int
-+vchiq_platform_videocore_wanted(VCHIQ_STATE_T *state);
-+
-+extern int
-+vchiq_platform_use_suspend_timer(void);
-+
-+extern void
-+vchiq_dump_platform_use_state(VCHIQ_STATE_T *state);
-+
-+extern void
-+vchiq_dump_service_use_state(VCHIQ_STATE_T *state);
-+
-+extern VCHIQ_ARM_STATE_T*
-+vchiq_platform_get_arm_state(VCHIQ_STATE_T *state);
-+
-+extern int
-+vchiq_videocore_wanted(VCHIQ_STATE_T *state);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_use_internal(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service,
-+ enum USE_TYPE_E use_type);
-+extern VCHIQ_STATUS_T
-+vchiq_release_internal(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service);
-+
-+void
-+set_suspend_state(VCHIQ_ARM_STATE_T *arm_state,
-+ enum vc_suspend_status new_state);
-+
-+void
-+set_resume_state(VCHIQ_ARM_STATE_T *arm_state,
-+ enum vc_resume_status new_state);
-+
-+void
-+start_suspend_timer(VCHIQ_ARM_STATE_T *arm_state);
-+
-+extern int vchiq_proc_init(void);
-+extern void vchiq_proc_deinit(void);
-+extern struct proc_dir_entry *vchiq_proc_top(void);
-+extern struct proc_dir_entry *vchiq_clients_top(void);
-+
-+
-+#endif /* VCHIQ_ARM_H */
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_build_info.h b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_build_info.h
-new file mode 100644
-index 0000000..df64581
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_build_info.h
-@@ -0,0 +1,37 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+const char *vchiq_get_build_hostname(void);
-+const char *vchiq_get_build_version(void);
-+const char *vchiq_get_build_time(void);
-+const char *vchiq_get_build_date(void);
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_cfg.h b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_cfg.h
-new file mode 100644
-index 0000000..493c86c
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_cfg.h
-@@ -0,0 +1,60 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef VCHIQ_CFG_H
-+#define VCHIQ_CFG_H
-+
-+#define VCHIQ_MAGIC VCHIQ_MAKE_FOURCC('V', 'C', 'H', 'I')
-+/* The version of VCHIQ - change with any non-trivial change */
-+#define VCHIQ_VERSION 6
-+/* The minimum compatible version - update to match VCHIQ_VERSION with any
-+** incompatible change */
-+#define VCHIQ_VERSION_MIN 3
-+
-+#define VCHIQ_MAX_STATES 1
-+#define VCHIQ_MAX_SERVICES 4096
-+#define VCHIQ_MAX_SLOTS 128
-+#define VCHIQ_MAX_SLOTS_PER_SIDE 64
-+
-+#define VCHIQ_NUM_CURRENT_BULKS 32
-+#define VCHIQ_NUM_SERVICE_BULKS 4
-+
-+#ifndef VCHIQ_ENABLE_DEBUG
-+#define VCHIQ_ENABLE_DEBUG 1
-+#endif
-+
-+#ifndef VCHIQ_ENABLE_STATS
-+#define VCHIQ_ENABLE_STATS 1
-+#endif
-+
-+#endif /* VCHIQ_CFG_H */
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.c b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.c
-new file mode 100644
-index 0000000..65f4b52
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.c
-@@ -0,0 +1,119 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#include "vchiq_connected.h"
-+#include "vchiq_core.h"
-+#include <linux/module.h>
-+#include <linux/mutex.h>
-+
-+#define MAX_CALLBACKS 10
-+
-+static int g_connected;
-+static int g_num_deferred_callbacks;
-+static VCHIQ_CONNECTED_CALLBACK_T g_deferred_callback[MAX_CALLBACKS];
-+static int g_once_init;
-+static struct mutex g_connected_mutex;
-+
-+/****************************************************************************
-+*
-+* Function to initialize our lock.
-+*
-+***************************************************************************/
-+
-+static void connected_init(void)
-+{
-+ if (!g_once_init) {
-+ mutex_init(&g_connected_mutex);
-+ g_once_init = 1;
-+ }
-+}
-+
-+/****************************************************************************
-+*
-+* This function is used to defer initialization until the vchiq stack is
-+* initialized. If the stack is already initialized, then the callback will
-+* be made immediately, otherwise it will be deferred until
-+* vchiq_call_connected_callbacks is called.
-+*
-+***************************************************************************/
-+
-+void vchiq_add_connected_callback(VCHIQ_CONNECTED_CALLBACK_T callback)
-+{
-+ connected_init();
-+
-+ if (mutex_lock_interruptible(&g_connected_mutex) != 0)
-+ return;
-+
-+ if (g_connected)
-+ /* We're already connected. Call the callback immediately. */
-+
-+ callback();
-+ else {
-+ if (g_num_deferred_callbacks >= MAX_CALLBACKS)
-+ vchiq_log_error(vchiq_core_log_level,
-+ "There already %d callback registered - "
-+ "please increase MAX_CALLBACKS",
-+ g_num_deferred_callbacks);
-+ else {
-+ g_deferred_callback[g_num_deferred_callbacks] =
-+ callback;
-+ g_num_deferred_callbacks++;
-+ }
-+ }
-+ mutex_unlock(&g_connected_mutex);
-+}
-+
-+/****************************************************************************
-+*
-+* This function is called by the vchiq stack once it has been connected to
-+* the videocore and clients can start to use the stack.
-+*
-+***************************************************************************/
-+
-+void vchiq_call_connected_callbacks(void)
-+{
-+ int i;
-+
-+ connected_init();
-+
-+ if (mutex_lock_interruptible(&g_connected_mutex) != 0)
-+ return;
-+
-+ for (i = 0; i < g_num_deferred_callbacks; i++)
-+ g_deferred_callback[i]();
-+
-+ g_num_deferred_callbacks = 0;
-+ g_connected = 1;
-+ mutex_unlock(&g_connected_mutex);
-+}
-+EXPORT_SYMBOL(vchiq_add_connected_callback);
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.h b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.h
-new file mode 100644
-index 0000000..e4cfdcc
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_connected.h
-@@ -0,0 +1,51 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef VCHIQ_CONNECTED_H
-+#define VCHIQ_CONNECTED_H
-+
-+/* ---- Include Files ----------------------------------------------------- */
-+
-+/* ---- Constants and Types ---------------------------------------------- */
-+
-+typedef void (*VCHIQ_CONNECTED_CALLBACK_T)(void);
-+
-+/* ---- Variable Externs ------------------------------------------------- */
-+
-+/* ---- Function Prototypes ---------------------------------------------- */
-+
-+void vchiq_add_connected_callback(VCHIQ_CONNECTED_CALLBACK_T callback);
-+void vchiq_call_connected_callbacks(void);
-+
-+#endif /* VCHIQ_CONNECTED_H */
-+
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.c b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.c
-new file mode 100644
-index 0000000..f35ed4f
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.c
-@@ -0,0 +1,3824 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#include "vchiq_core.h"
-+
-+#define VCHIQ_SLOT_HANDLER_STACK 8192
-+
-+#define HANDLE_STATE_SHIFT 12
-+
-+#define SLOT_INFO_FROM_INDEX(state, index) (state->slot_info + (index))
-+#define SLOT_DATA_FROM_INDEX(state, index) (state->slot_data + (index))
-+#define SLOT_INDEX_FROM_DATA(state, data) \
-+ (((unsigned int)((char *)data - (char *)state->slot_data)) / \
-+ VCHIQ_SLOT_SIZE)
-+#define SLOT_INDEX_FROM_INFO(state, info) \
-+ ((unsigned int)(info - state->slot_info))
-+#define SLOT_QUEUE_INDEX_FROM_POS(pos) \
-+ ((int)((unsigned int)(pos) / VCHIQ_SLOT_SIZE))
-+
-+
-+#define BULK_INDEX(x) (x & (VCHIQ_NUM_SERVICE_BULKS - 1))
-+
-+
-+struct vchiq_open_payload {
-+ int fourcc;
-+ int client_id;
-+ short version;
-+ short version_min;
-+};
-+
-+struct vchiq_openack_payload {
-+ short version;
-+};
-+
-+/* we require this for consistency between endpoints */
-+vchiq_static_assert(sizeof(VCHIQ_HEADER_T) == 8);
-+vchiq_static_assert(IS_POW2(sizeof(VCHIQ_HEADER_T)));
-+vchiq_static_assert(IS_POW2(VCHIQ_NUM_CURRENT_BULKS));
-+vchiq_static_assert(IS_POW2(VCHIQ_NUM_SERVICE_BULKS));
-+vchiq_static_assert(IS_POW2(VCHIQ_MAX_SERVICES));
-+vchiq_static_assert(VCHIQ_VERSION >= VCHIQ_VERSION_MIN);
-+
-+/* Run time control of log level, based on KERN_XXX level. */
-+int vchiq_core_log_level = VCHIQ_LOG_DEFAULT;
-+int vchiq_core_msg_log_level = VCHIQ_LOG_DEFAULT;
-+int vchiq_sync_log_level = VCHIQ_LOG_DEFAULT;
-+
-+static atomic_t pause_bulks_count = ATOMIC_INIT(0);
-+
-+static DEFINE_SPINLOCK(service_spinlock);
-+DEFINE_SPINLOCK(bulk_waiter_spinlock);
-+DEFINE_SPINLOCK(quota_spinlock);
-+
-+VCHIQ_STATE_T *vchiq_states[VCHIQ_MAX_STATES];
-+static unsigned int handle_seq;
-+
-+static const char *const srvstate_names[] = {
-+ "FREE",
-+ "HIDDEN",
-+ "LISTENING",
-+ "OPENING",
-+ "OPEN",
-+ "OPENSYNC",
-+ "CLOSESENT",
-+ "CLOSERECVD",
-+ "CLOSEWAIT",
-+ "CLOSED"
-+};
-+
-+static const char *const reason_names[] = {
-+ "SERVICE_OPENED",
-+ "SERVICE_CLOSED",
-+ "MESSAGE_AVAILABLE",
-+ "BULK_TRANSMIT_DONE",
-+ "BULK_RECEIVE_DONE",
-+ "BULK_TRANSMIT_ABORTED",
-+ "BULK_RECEIVE_ABORTED"
-+};
-+
-+static const char *const conn_state_names[] = {
-+ "DISCONNECTED",
-+ "CONNECTING",
-+ "CONNECTED",
-+ "PAUSING",
-+ "PAUSE_SENT",
-+ "PAUSED",
-+ "RESUMING",
-+ "PAUSE_TIMEOUT",
-+ "RESUME_TIMEOUT"
-+};
-+
-+
-+static void
-+release_message_sync(VCHIQ_STATE_T *state, VCHIQ_HEADER_T *header);
-+
-+static const char *msg_type_str(unsigned int msg_type)
-+{
-+ switch (msg_type) {
-+ case VCHIQ_MSG_PADDING: return "PADDING";
-+ case VCHIQ_MSG_CONNECT: return "CONNECT";
-+ case VCHIQ_MSG_OPEN: return "OPEN";
-+ case VCHIQ_MSG_OPENACK: return "OPENACK";
-+ case VCHIQ_MSG_CLOSE: return "CLOSE";
-+ case VCHIQ_MSG_DATA: return "DATA";
-+ case VCHIQ_MSG_BULK_RX: return "BULK_RX";
-+ case VCHIQ_MSG_BULK_TX: return "BULK_TX";
-+ case VCHIQ_MSG_BULK_RX_DONE: return "BULK_RX_DONE";
-+ case VCHIQ_MSG_BULK_TX_DONE: return "BULK_TX_DONE";
-+ case VCHIQ_MSG_PAUSE: return "PAUSE";
-+ case VCHIQ_MSG_RESUME: return "RESUME";
-+ case VCHIQ_MSG_REMOTE_USE: return "REMOTE_USE";
-+ case VCHIQ_MSG_REMOTE_RELEASE: return "REMOTE_RELEASE";
-+ case VCHIQ_MSG_REMOTE_USE_ACTIVE: return "REMOTE_USE_ACTIVE";
-+ }
-+ return "???";
-+}
-+
-+static inline void
-+vchiq_set_service_state(VCHIQ_SERVICE_T *service, int newstate)
-+{
-+ vchiq_log_info(vchiq_core_log_level, "%d: srv:%d %s->%s",
-+ service->state->id, service->localport,
-+ srvstate_names[service->srvstate],
-+ srvstate_names[newstate]);
-+ service->srvstate = newstate;
-+}
-+
-+VCHIQ_SERVICE_T *
-+find_service_by_handle(VCHIQ_SERVICE_HANDLE_T handle)
-+{
-+ VCHIQ_SERVICE_T *service;
-+
-+ spin_lock(&service_spinlock);
-+ service = handle_to_service(handle);
-+ if (service && (service->srvstate != VCHIQ_SRVSTATE_FREE) &&
-+ (service->handle == handle)) {
-+ BUG_ON(service->ref_count == 0);
-+ service->ref_count++;
-+ } else
-+ service = NULL;
-+ spin_unlock(&service_spinlock);
-+
-+ if (!service)
-+ vchiq_log_info(vchiq_core_log_level,
-+ "Invalid service handle 0x%x", handle);
-+
-+ return service;
-+}
-+
-+VCHIQ_SERVICE_T *
-+find_service_by_port(VCHIQ_STATE_T *state, int localport)
-+{
-+ VCHIQ_SERVICE_T *service = NULL;
-+ if ((unsigned int)localport <= VCHIQ_PORT_MAX) {
-+ spin_lock(&service_spinlock);
-+ service = state->services[localport];
-+ if (service && (service->srvstate != VCHIQ_SRVSTATE_FREE)) {
-+ BUG_ON(service->ref_count == 0);
-+ service->ref_count++;
-+ } else
-+ service = NULL;
-+ spin_unlock(&service_spinlock);
-+ }
-+
-+ if (!service)
-+ vchiq_log_info(vchiq_core_log_level,
-+ "Invalid port %d", localport);
-+
-+ return service;
-+}
-+
-+VCHIQ_SERVICE_T *
-+find_service_for_instance(VCHIQ_INSTANCE_T instance,
-+ VCHIQ_SERVICE_HANDLE_T handle) {
-+ VCHIQ_SERVICE_T *service;
-+
-+ spin_lock(&service_spinlock);
-+ service = handle_to_service(handle);
-+ if (service && (service->srvstate != VCHIQ_SRVSTATE_FREE) &&
-+ (service->handle == handle) &&
-+ (service->instance == instance)) {
-+ BUG_ON(service->ref_count == 0);
-+ service->ref_count++;
-+ } else
-+ service = NULL;
-+ spin_unlock(&service_spinlock);
-+
-+ if (!service)
-+ vchiq_log_info(vchiq_core_log_level,
-+ "Invalid service handle 0x%x", handle);
-+
-+ return service;
-+}
-+
-+VCHIQ_SERVICE_T *
-+next_service_by_instance(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance,
-+ int *pidx)
-+{
-+ VCHIQ_SERVICE_T *service = NULL;
-+ int idx = *pidx;
-+
-+ spin_lock(&service_spinlock);
-+ while (idx < state->unused_service) {
-+ VCHIQ_SERVICE_T *srv = state->services[idx++];
-+ if (srv && (srv->srvstate != VCHIQ_SRVSTATE_FREE) &&
-+ (srv->instance == instance)) {
-+ service = srv;
-+ BUG_ON(service->ref_count == 0);
-+ service->ref_count++;
-+ break;
-+ }
-+ }
-+ spin_unlock(&service_spinlock);
-+
-+ *pidx = idx;
-+
-+ return service;
-+}
-+
-+void
-+lock_service(VCHIQ_SERVICE_T *service)
-+{
-+ spin_lock(&service_spinlock);
-+ BUG_ON(!service || (service->ref_count == 0));
-+ if (service)
-+ service->ref_count++;
-+ spin_unlock(&service_spinlock);
-+}
-+
-+void
-+unlock_service(VCHIQ_SERVICE_T *service)
-+{
-+ VCHIQ_STATE_T *state = service->state;
-+ spin_lock(&service_spinlock);
-+ BUG_ON(!service || (service->ref_count == 0));
-+ if (service && service->ref_count) {
-+ service->ref_count--;
-+ if (!service->ref_count) {
-+ BUG_ON(service->srvstate != VCHIQ_SRVSTATE_FREE);
-+ state->services[service->localport] = NULL;
-+ } else
-+ service = NULL;
-+ }
-+ spin_unlock(&service_spinlock);
-+
-+ if (service && service->userdata_term)
-+ service->userdata_term(service->base.userdata);
-+
-+ kfree(service);
-+}
-+
-+int
-+vchiq_get_client_id(VCHIQ_SERVICE_HANDLE_T handle)
-+{
-+ VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
-+ int id;
-+
-+ id = service ? service->client_id : 0;
-+ if (service)
-+ unlock_service(service);
-+
-+ return id;
-+}
-+
-+void *
-+vchiq_get_service_userdata(VCHIQ_SERVICE_HANDLE_T handle)
-+{
-+ VCHIQ_SERVICE_T *service = handle_to_service(handle);
-+
-+ return service ? service->base.userdata : NULL;
-+}
-+
-+int
-+vchiq_get_service_fourcc(VCHIQ_SERVICE_HANDLE_T handle)
-+{
-+ VCHIQ_SERVICE_T *service = handle_to_service(handle);
-+
-+ return service ? service->base.fourcc : 0;
-+}
-+
-+static void
-+mark_service_closing_internal(VCHIQ_SERVICE_T *service, int sh_thread)
-+{
-+ VCHIQ_STATE_T *state = service->state;
-+ VCHIQ_SERVICE_QUOTA_T *service_quota;
-+
-+ service->closing = 1;
-+
-+ /* Synchronise with other threads. */
-+ mutex_lock(&state->recycle_mutex);
-+ mutex_unlock(&state->recycle_mutex);
-+ if (!sh_thread || (state->conn_state != VCHIQ_CONNSTATE_PAUSE_SENT)) {
-+ /* If we're pausing then the slot_mutex is held until resume
-+ * by the slot handler. Therefore don't try to acquire this
-+ * mutex if we're the slot handler and in the pause sent state.
-+ * We don't need to in this case anyway. */
-+ mutex_lock(&state->slot_mutex);
-+ mutex_unlock(&state->slot_mutex);
-+ }
-+
-+ /* Unblock any sending thread. */
-+ service_quota = &state->service_quotas[service->localport];
-+ up(&service_quota->quota_event);
-+}
-+
-+static void
-+mark_service_closing(VCHIQ_SERVICE_T *service)
-+{
-+ mark_service_closing_internal(service, 0);
-+}
-+
-+static inline VCHIQ_STATUS_T
-+make_service_callback(VCHIQ_SERVICE_T *service, VCHIQ_REASON_T reason,
-+ VCHIQ_HEADER_T *header, void *bulk_userdata)
-+{
-+ VCHIQ_STATUS_T status;
-+ vchiq_log_trace(vchiq_core_log_level, "%d: callback:%d (%s, %x, %x)",
-+ service->state->id, service->localport, reason_names[reason],
-+ (unsigned int)header, (unsigned int)bulk_userdata);
-+ status = service->base.callback(reason, header, service->handle,
-+ bulk_userdata);
-+ if (status == VCHIQ_ERROR) {
-+ vchiq_log_warning(vchiq_core_log_level,
-+ "%d: ignoring ERROR from callback to service %x",
-+ service->state->id, service->handle);
-+ status = VCHIQ_SUCCESS;
-+ }
-+ return status;
-+}
-+
-+inline void
-+vchiq_set_conn_state(VCHIQ_STATE_T *state, VCHIQ_CONNSTATE_T newstate)
-+{
-+ VCHIQ_CONNSTATE_T oldstate = state->conn_state;
-+ vchiq_log_info(vchiq_core_log_level, "%d: %s->%s", state->id,
-+ conn_state_names[oldstate],
-+ conn_state_names[newstate]);
-+ state->conn_state = newstate;
-+ vchiq_platform_conn_state_changed(state, oldstate, newstate);
-+}
-+
-+static inline void
-+remote_event_create(REMOTE_EVENT_T *event)
-+{
-+ event->armed = 0;
-+ /* Don't clear the 'fired' flag because it may already have been set
-+ ** by the other side. */
-+ sema_init(event->event, 0);
-+}
-+
-+static inline void
-+remote_event_destroy(REMOTE_EVENT_T *event)
-+{
-+ (void)event;
-+}
-+
-+static inline int
-+remote_event_wait(REMOTE_EVENT_T *event)
-+{
-+ if (!event->fired) {
-+ event->armed = 1;
-+ dsb();
-+ if (!event->fired) {
-+ if (down_interruptible(event->event) != 0) {
-+ event->armed = 0;
-+ return 0;
-+ }
-+ }
-+ event->armed = 0;
-+ wmb();
-+ }
-+
-+ event->fired = 0;
-+ return 1;
-+}
-+
-+static inline void
-+remote_event_signal_local(REMOTE_EVENT_T *event)
-+{
-+ event->armed = 0;
-+ up(event->event);
-+}
-+
-+static inline void
-+remote_event_poll(REMOTE_EVENT_T *event)
-+{
-+ if (event->fired && event->armed)
-+ remote_event_signal_local(event);
-+}
-+
-+void
-+remote_event_pollall(VCHIQ_STATE_T *state)
-+{
-+ remote_event_poll(&state->local->sync_trigger);
-+ remote_event_poll(&state->local->sync_release);
-+ remote_event_poll(&state->local->trigger);
-+ remote_event_poll(&state->local->recycle);
-+}
-+
-+/* Round up message sizes so that any space at the end of a slot is always big
-+** enough for a header. This relies on header size being a power of two, which
-+** has been verified earlier by a static assertion. */
-+
-+static inline unsigned int
-+calc_stride(unsigned int size)
-+{
-+ /* Allow room for the header */
-+ size += sizeof(VCHIQ_HEADER_T);
-+
-+ /* Round up */
-+ return (size + sizeof(VCHIQ_HEADER_T) - 1) & ~(sizeof(VCHIQ_HEADER_T)
-+ - 1);
-+}
-+
-+/* Called by the slot handler thread */
-+static VCHIQ_SERVICE_T *
-+get_listening_service(VCHIQ_STATE_T *state, int fourcc)
-+{
-+ int i;
-+
-+ WARN_ON(fourcc == VCHIQ_FOURCC_INVALID);
-+
-+ for (i = 0; i < state->unused_service; i++) {
-+ VCHIQ_SERVICE_T *service = state->services[i];
-+ if (service &&
-+ (service->public_fourcc == fourcc) &&
-+ ((service->srvstate == VCHIQ_SRVSTATE_LISTENING) ||
-+ ((service->srvstate == VCHIQ_SRVSTATE_OPEN) &&
-+ (service->remoteport == VCHIQ_PORT_FREE)))) {
-+ lock_service(service);
-+ return service;
-+ }
-+ }
-+
-+ return NULL;
-+}
-+
-+/* Called by the slot handler thread */
-+static VCHIQ_SERVICE_T *
-+get_connected_service(VCHIQ_STATE_T *state, unsigned int port)
-+{
-+ int i;
-+ for (i = 0; i < state->unused_service; i++) {
-+ VCHIQ_SERVICE_T *service = state->services[i];
-+ if (service && (service->srvstate == VCHIQ_SRVSTATE_OPEN)
-+ && (service->remoteport == port)) {
-+ lock_service(service);
-+ return service;
-+ }
-+ }
-+ return NULL;
-+}
-+
-+inline void
-+request_poll(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service, int poll_type)
-+{
-+ uint32_t value;
-+
-+ if (service) {
-+ do {
-+ value = atomic_read(&service->poll_flags);
-+ } while (atomic_cmpxchg(&service->poll_flags, value,
-+ value | (1 << poll_type)) != value);
-+
-+ do {
-+ value = atomic_read(&state->poll_services[
-+ service->localport>>5]);
-+ } while (atomic_cmpxchg(
-+ &state->poll_services[service->localport>>5],
-+ value, value | (1 << (service->localport & 0x1f)))
-+ != value);
-+ }
-+
-+ state->poll_needed = 1;
-+ wmb();
-+
-+ /* ... and ensure the slot handler runs. */
-+ remote_event_signal_local(&state->local->trigger);
-+}
-+
-+/* Called from queue_message, by the slot handler and application threads,
-+** with slot_mutex held */
-+static VCHIQ_HEADER_T *
-+reserve_space(VCHIQ_STATE_T *state, int space, int is_blocking)
-+{
-+ VCHIQ_SHARED_STATE_T *local = state->local;
-+ int tx_pos = state->local_tx_pos;
-+ int slot_space = VCHIQ_SLOT_SIZE - (tx_pos & VCHIQ_SLOT_MASK);
-+
-+ if (space > slot_space) {
-+ VCHIQ_HEADER_T *header;
-+ /* Fill the remaining space with padding */
-+ WARN_ON(state->tx_data == NULL);
-+ header = (VCHIQ_HEADER_T *)
-+ (state->tx_data + (tx_pos & VCHIQ_SLOT_MASK));
-+ header->msgid = VCHIQ_MSGID_PADDING;
-+ header->size = slot_space - sizeof(VCHIQ_HEADER_T);
-+
-+ tx_pos += slot_space;
-+ }
-+
-+ /* If necessary, get the next slot. */
-+ if ((tx_pos & VCHIQ_SLOT_MASK) == 0) {
-+ int slot_index;
-+
-+ /* If there is no free slot... */
-+
-+ if (down_trylock(&state->slot_available_event) != 0) {
-+ /* ...wait for one. */
-+
-+ VCHIQ_STATS_INC(state, slot_stalls);
-+
-+ /* But first, flush through the last slot. */
-+ state->local_tx_pos = tx_pos;
-+ local->tx_pos = tx_pos;
-+ remote_event_signal(&state->remote->trigger);
-+
-+ if (!is_blocking ||
-+ (down_interruptible(
-+ &state->slot_available_event) != 0))
-+ return NULL; /* No space available */
-+ }
-+
-+ BUG_ON(tx_pos ==
-+ (state->slot_queue_available * VCHIQ_SLOT_SIZE));
-+
-+ slot_index = local->slot_queue[
-+ SLOT_QUEUE_INDEX_FROM_POS(tx_pos) &
-+ VCHIQ_SLOT_QUEUE_MASK];
-+ state->tx_data =
-+ (char *)SLOT_DATA_FROM_INDEX(state, slot_index);
-+ }
-+
-+ state->local_tx_pos = tx_pos + space;
-+
-+ return (VCHIQ_HEADER_T *)(state->tx_data + (tx_pos & VCHIQ_SLOT_MASK));
-+}
-+
-+/* Called by the recycle thread. */
-+static void
-+process_free_queue(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_SHARED_STATE_T *local = state->local;
-+ BITSET_T service_found[BITSET_SIZE(VCHIQ_MAX_SERVICES)];
-+ int slot_queue_available;
-+
-+ /* Use a read memory barrier to ensure that any state that may have
-+ ** been modified by another thread is not masked by stale prefetched
-+ ** values. */
-+ rmb();
-+
-+ /* Find slots which have been freed by the other side, and return them
-+ ** to the available queue. */
-+ slot_queue_available = state->slot_queue_available;
-+
-+ while (slot_queue_available != local->slot_queue_recycle) {
-+ unsigned int pos;
-+ int slot_index = local->slot_queue[slot_queue_available++ &
-+ VCHIQ_SLOT_QUEUE_MASK];
-+ char *data = (char *)SLOT_DATA_FROM_INDEX(state, slot_index);
-+ int data_found = 0;
-+
-+ vchiq_log_trace(vchiq_core_log_level, "%d: pfq %d=%x %x %x",
-+ state->id, slot_index, (unsigned int)data,
-+ local->slot_queue_recycle, slot_queue_available);
-+
-+ /* Initialise the bitmask for services which have used this
-+ ** slot */
-+ BITSET_ZERO(service_found);
-+
-+ pos = 0;
-+
-+ while (pos < VCHIQ_SLOT_SIZE) {
-+ VCHIQ_HEADER_T *header =
-+ (VCHIQ_HEADER_T *)(data + pos);
-+ int msgid = header->msgid;
-+ if (VCHIQ_MSG_TYPE(msgid) == VCHIQ_MSG_DATA) {
-+ int port = VCHIQ_MSG_SRCPORT(msgid);
-+ VCHIQ_SERVICE_QUOTA_T *service_quota =
-+ &state->service_quotas[port];
-+ int count;
-+ spin_lock("a_spinlock);
-+ count = service_quota->message_use_count;
-+ if (count > 0)
-+ service_quota->message_use_count =
-+ count - 1;
-+ spin_unlock("a_spinlock);
-+
-+ if (count == service_quota->message_quota)
-+ /* Signal the service that it
-+ ** has dropped below its quota
-+ */
-+ up(&service_quota->quota_event);
-+ else if (count == 0) {
-+ vchiq_log_error(vchiq_core_log_level,
-+ "service %d "
-+ "message_use_count=%d "
-+ "(header %x, msgid %x, "
-+ "header->msgid %x, "
-+ "header->size %x)",
-+ port,
-+ service_quota->
-+ message_use_count,
-+ (unsigned int)header, msgid,
-+ header->msgid,
-+ header->size);
-+ WARN(1, "invalid message use count\n");
-+ }
-+ if (!BITSET_IS_SET(service_found, port)) {
-+ /* Set the found bit for this service */
-+ BITSET_SET(service_found, port);
-+
-+ spin_lock("a_spinlock);
-+ count = service_quota->slot_use_count;
-+ if (count > 0)
-+ service_quota->slot_use_count =
-+ count - 1;
-+ spin_unlock("a_spinlock);
-+
-+ if (count > 0) {
-+ /* Signal the service in case
-+ ** it has dropped below its
-+ ** quota */
-+ up(&service_quota->quota_event);
-+ vchiq_log_trace(
-+ vchiq_core_log_level,
-+ "%d: pfq:%d %x@%x - "
-+ "slot_use->%d",
-+ state->id, port,
-+ header->size,
-+ (unsigned int)header,
-+ count - 1);
-+ } else {
-+ vchiq_log_error(
-+ vchiq_core_log_level,
-+ "service %d "
-+ "slot_use_count"
-+ "=%d (header %x"
-+ ", msgid %x, "
-+ "header->msgid"
-+ " %x, header->"
-+ "size %x)",
-+ port, count,
-+ (unsigned int)header,
-+ msgid,
-+ header->msgid,
-+ header->size);
-+ WARN(1, "bad slot use count\n");
-+ }
-+ }
-+
-+ data_found = 1;
-+ }
-+
-+ pos += calc_stride(header->size);
-+ if (pos > VCHIQ_SLOT_SIZE) {
-+ vchiq_log_error(vchiq_core_log_level,
-+ "pfq - pos %x: header %x, msgid %x, "
-+ "header->msgid %x, header->size %x",
-+ pos, (unsigned int)header, msgid,
-+ header->msgid, header->size);
-+ WARN(1, "invalid slot position\n");
-+ }
-+ }
-+
-+ if (data_found) {
-+ int count;
-+ spin_lock("a_spinlock);
-+ count = state->data_use_count;
-+ if (count > 0)
-+ state->data_use_count =
-+ count - 1;
-+ spin_unlock("a_spinlock);
-+ if (count == state->data_quota)
-+ up(&state->data_quota_event);
-+ }
-+
-+ state->slot_queue_available = slot_queue_available;
-+ up(&state->slot_available_event);
-+ }
-+}
-+
-+/* Called by the slot handler and application threads */
-+static VCHIQ_STATUS_T
-+queue_message(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service,
-+ int msgid, const VCHIQ_ELEMENT_T *elements,
-+ int count, int size, int is_blocking)
-+{
-+ VCHIQ_SHARED_STATE_T *local;
-+ VCHIQ_SERVICE_QUOTA_T *service_quota = NULL;
-+ VCHIQ_HEADER_T *header;
-+ int type = VCHIQ_MSG_TYPE(msgid);
-+
-+ unsigned int stride;
-+
-+ local = state->local;
-+
-+ stride = calc_stride(size);
-+
-+ WARN_ON(!(stride <= VCHIQ_SLOT_SIZE));
-+
-+ if ((type != VCHIQ_MSG_RESUME) &&
-+ (mutex_lock_interruptible(&state->slot_mutex) != 0))
-+ return VCHIQ_RETRY;
-+
-+ if (type == VCHIQ_MSG_DATA) {
-+ int tx_end_index;
-+
-+ BUG_ON(!service);
-+
-+ if (service->closing) {
-+ /* The service has been closed */
-+ mutex_unlock(&state->slot_mutex);
-+ return VCHIQ_ERROR;
-+ }
-+
-+ service_quota = &state->service_quotas[service->localport];
-+
-+ spin_lock("a_spinlock);
-+
-+ /* Ensure this service doesn't use more than its quota of
-+ ** messages or slots */
-+ tx_end_index = SLOT_QUEUE_INDEX_FROM_POS(
-+ state->local_tx_pos + stride - 1);
-+
-+ /* Ensure data messages don't use more than their quota of
-+ ** slots */
-+ while ((tx_end_index != state->previous_data_index) &&
-+ (state->data_use_count == state->data_quota)) {
-+ VCHIQ_STATS_INC(state, data_stalls);
-+ spin_unlock("a_spinlock);
-+ mutex_unlock(&state->slot_mutex);
-+
-+ if (down_interruptible(&state->data_quota_event)
-+ != 0)
-+ return VCHIQ_RETRY;
-+
-+ mutex_lock(&state->slot_mutex);
-+ spin_lock("a_spinlock);
-+ tx_end_index = SLOT_QUEUE_INDEX_FROM_POS(
-+ state->local_tx_pos + stride - 1);
-+ if ((tx_end_index == state->previous_data_index) ||
-+ (state->data_use_count < state->data_quota)) {
-+ /* Pass the signal on to other waiters */
-+ up(&state->data_quota_event);
-+ break;
-+ }
-+ }
-+
-+ while ((service_quota->message_use_count ==
-+ service_quota->message_quota) ||
-+ ((tx_end_index != service_quota->previous_tx_index) &&
-+ (service_quota->slot_use_count ==
-+ service_quota->slot_quota))) {
-+ spin_unlock("a_spinlock);
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%d: qm:%d %s,%x - quota stall "
-+ "(msg %d, slot %d)",
-+ state->id, service->localport,
-+ msg_type_str(type), size,
-+ service_quota->message_use_count,
-+ service_quota->slot_use_count);
-+ VCHIQ_SERVICE_STATS_INC(service, quota_stalls);
-+ mutex_unlock(&state->slot_mutex);
-+ if (down_interruptible(&service_quota->quota_event)
-+ != 0)
-+ return VCHIQ_RETRY;
-+ if (service->closing)
-+ return VCHIQ_ERROR;
-+ if (mutex_lock_interruptible(&state->slot_mutex) != 0)
-+ return VCHIQ_RETRY;
-+ if (service->srvstate != VCHIQ_SRVSTATE_OPEN) {
-+ /* The service has been closed */
-+ mutex_unlock(&state->slot_mutex);
-+ return VCHIQ_ERROR;
-+ }
-+ spin_lock("a_spinlock);
-+ tx_end_index = SLOT_QUEUE_INDEX_FROM_POS(
-+ state->local_tx_pos + stride - 1);
-+ }
-+
-+ spin_unlock("a_spinlock);
-+ }
-+
-+ header = reserve_space(state, stride, is_blocking);
-+
-+ if (!header) {
-+ if (service)
-+ VCHIQ_SERVICE_STATS_INC(service, slot_stalls);
-+ mutex_unlock(&state->slot_mutex);
-+ return VCHIQ_RETRY;
-+ }
-+
-+ if (type == VCHIQ_MSG_DATA) {
-+ int i, pos;
-+ int tx_end_index;
-+ int slot_use_count;
-+
-+ vchiq_log_info(vchiq_core_log_level,
-+ "%d: qm %s@%x,%x (%d->%d)",
-+ state->id,
-+ msg_type_str(VCHIQ_MSG_TYPE(msgid)),
-+ (unsigned int)header, size,
-+ VCHIQ_MSG_SRCPORT(msgid),
-+ VCHIQ_MSG_DSTPORT(msgid));
-+
-+ BUG_ON(!service);
-+
-+ for (i = 0, pos = 0; i < (unsigned int)count;
-+ pos += elements[i++].size)
-+ if (elements[i].size) {
-+ if (vchiq_copy_from_user
-+ (header->data + pos, elements[i].data,
-+ (size_t) elements[i].size) !=
-+ VCHIQ_SUCCESS) {
-+ mutex_unlock(&state->slot_mutex);
-+ VCHIQ_SERVICE_STATS_INC(service,
-+ error_count);
-+ return VCHIQ_ERROR;
-+ }
-+ if (i == 0) {
-+ if (vchiq_core_msg_log_level >=
-+ VCHIQ_LOG_INFO)
-+ vchiq_log_dump_mem("Sent", 0,
-+ header->data + pos,
-+ min(64u,
-+ elements[0].size));
-+ }
-+ }
-+
-+ spin_lock("a_spinlock);
-+ service_quota->message_use_count++;
-+
-+ tx_end_index =
-+ SLOT_QUEUE_INDEX_FROM_POS(state->local_tx_pos - 1);
-+
-+ /* If this transmission can't fit in the last slot used by any
-+ ** service, the data_use_count must be increased. */
-+ if (tx_end_index != state->previous_data_index) {
-+ state->previous_data_index = tx_end_index;
-+ state->data_use_count++;
-+ }
-+
-+ /* If this isn't the same slot last used by this service,
-+ ** the service's slot_use_count must be increased. */
-+ if (tx_end_index != service_quota->previous_tx_index) {
-+ service_quota->previous_tx_index = tx_end_index;
-+ slot_use_count = ++service_quota->slot_use_count;
-+ } else {
-+ slot_use_count = 0;
-+ }
-+
-+ spin_unlock("a_spinlock);
-+
-+ if (slot_use_count)
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%d: qm:%d %s,%x - slot_use->%d (hdr %p)",
-+ state->id, service->localport,
-+ msg_type_str(VCHIQ_MSG_TYPE(msgid)), size,
-+ slot_use_count, header);
-+
-+ VCHIQ_SERVICE_STATS_INC(service, ctrl_tx_count);
-+ VCHIQ_SERVICE_STATS_ADD(service, ctrl_tx_bytes, size);
-+ } else {
-+ vchiq_log_info(vchiq_core_log_level,
-+ "%d: qm %s@%x,%x (%d->%d)", state->id,
-+ msg_type_str(VCHIQ_MSG_TYPE(msgid)),
-+ (unsigned int)header, size,
-+ VCHIQ_MSG_SRCPORT(msgid),
-+ VCHIQ_MSG_DSTPORT(msgid));
-+ if (size != 0) {
-+ WARN_ON(!((count == 1) && (size == elements[0].size)));
-+ memcpy(header->data, elements[0].data,
-+ elements[0].size);
-+ }
-+ VCHIQ_STATS_INC(state, ctrl_tx_count);
-+ }
-+
-+ header->msgid = msgid;
-+ header->size = size;
-+
-+ {
-+ int svc_fourcc;
-+
-+ svc_fourcc = service
-+ ? service->base.fourcc
-+ : VCHIQ_MAKE_FOURCC('?', '?', '?', '?');
-+
-+ vchiq_log_info(vchiq_core_msg_log_level,
-+ "Sent Msg %s(%u) to %c%c%c%c s:%u d:%d len:%d",
-+ msg_type_str(VCHIQ_MSG_TYPE(msgid)),
-+ VCHIQ_MSG_TYPE(msgid),
-+ VCHIQ_FOURCC_AS_4CHARS(svc_fourcc),
-+ VCHIQ_MSG_SRCPORT(msgid),
-+ VCHIQ_MSG_DSTPORT(msgid),
-+ size);
-+ }
-+
-+ /* Make sure the new header is visible to the peer. */
-+ wmb();
-+
-+ /* Make the new tx_pos visible to the peer. */
-+ local->tx_pos = state->local_tx_pos;
-+ wmb();
-+
-+ if (service && (type == VCHIQ_MSG_CLOSE))
-+ vchiq_set_service_state(service, VCHIQ_SRVSTATE_CLOSESENT);
-+
-+ if (VCHIQ_MSG_TYPE(msgid) != VCHIQ_MSG_PAUSE)
-+ mutex_unlock(&state->slot_mutex);
-+
-+ remote_event_signal(&state->remote->trigger);
-+
-+ return VCHIQ_SUCCESS;
-+}
-+
-+/* Called by the slot handler and application threads */
-+static VCHIQ_STATUS_T
-+queue_message_sync(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service,
-+ int msgid, const VCHIQ_ELEMENT_T *elements,
-+ int count, int size, int is_blocking)
-+{
-+ VCHIQ_SHARED_STATE_T *local;
-+ VCHIQ_HEADER_T *header;
-+
-+ local = state->local;
-+
-+ if ((VCHIQ_MSG_TYPE(msgid) != VCHIQ_MSG_RESUME) &&
-+ (mutex_lock_interruptible(&state->sync_mutex) != 0))
-+ return VCHIQ_RETRY;
-+
-+ remote_event_wait(&local->sync_release);
-+
-+ rmb();
-+
-+ header = (VCHIQ_HEADER_T *)SLOT_DATA_FROM_INDEX(state,
-+ local->slot_sync);
-+
-+ {
-+ int oldmsgid = header->msgid;
-+ if (oldmsgid != VCHIQ_MSGID_PADDING)
-+ vchiq_log_error(vchiq_core_log_level,
-+ "%d: qms - msgid %x, not PADDING",
-+ state->id, oldmsgid);
-+ }
-+
-+ if (service) {
-+ int i, pos;
-+
-+ vchiq_log_info(vchiq_sync_log_level,
-+ "%d: qms %s@%x,%x (%d->%d)", state->id,
-+ msg_type_str(VCHIQ_MSG_TYPE(msgid)),
-+ (unsigned int)header, size,
-+ VCHIQ_MSG_SRCPORT(msgid),
-+ VCHIQ_MSG_DSTPORT(msgid));
-+
-+ for (i = 0, pos = 0; i < (unsigned int)count;
-+ pos += elements[i++].size)
-+ if (elements[i].size) {
-+ if (vchiq_copy_from_user
-+ (header->data + pos, elements[i].data,
-+ (size_t) elements[i].size) !=
-+ VCHIQ_SUCCESS) {
-+ mutex_unlock(&state->sync_mutex);
-+ VCHIQ_SERVICE_STATS_INC(service,
-+ error_count);
-+ return VCHIQ_ERROR;
-+ }
-+ if (i == 0) {
-+ if (vchiq_sync_log_level >=
-+ VCHIQ_LOG_TRACE)
-+ vchiq_log_dump_mem("Sent Sync",
-+ 0, header->data + pos,
-+ min(64u,
-+ elements[0].size));
-+ }
-+ }
-+
-+ VCHIQ_SERVICE_STATS_INC(service, ctrl_tx_count);
-+ VCHIQ_SERVICE_STATS_ADD(service, ctrl_tx_bytes, size);
-+ } else {
-+ vchiq_log_info(vchiq_sync_log_level,
-+ "%d: qms %s@%x,%x (%d->%d)", state->id,
-+ msg_type_str(VCHIQ_MSG_TYPE(msgid)),
-+ (unsigned int)header, size,
-+ VCHIQ_MSG_SRCPORT(msgid),
-+ VCHIQ_MSG_DSTPORT(msgid));
-+ if (size != 0) {
-+ WARN_ON(!((count == 1) && (size == elements[0].size)));
-+ memcpy(header->data, elements[0].data,
-+ elements[0].size);
-+ }
-+ VCHIQ_STATS_INC(state, ctrl_tx_count);
-+ }
-+
-+ header->size = size;
-+ header->msgid = msgid;
-+
-+ if (vchiq_sync_log_level >= VCHIQ_LOG_TRACE) {
-+ int svc_fourcc;
-+
-+ svc_fourcc = service
-+ ? service->base.fourcc
-+ : VCHIQ_MAKE_FOURCC('?', '?', '?', '?');
-+
-+ vchiq_log_trace(vchiq_sync_log_level,
-+ "Sent Sync Msg %s(%u) to %c%c%c%c s:%u d:%d len:%d",
-+ msg_type_str(VCHIQ_MSG_TYPE(msgid)),
-+ VCHIQ_MSG_TYPE(msgid),
-+ VCHIQ_FOURCC_AS_4CHARS(svc_fourcc),
-+ VCHIQ_MSG_SRCPORT(msgid),
-+ VCHIQ_MSG_DSTPORT(msgid),
-+ size);
-+ }
-+
-+ /* Make sure the new header is visible to the peer. */
-+ wmb();
-+
-+ remote_event_signal(&state->remote->sync_trigger);
-+
-+ if (VCHIQ_MSG_TYPE(msgid) != VCHIQ_MSG_PAUSE)
-+ mutex_unlock(&state->sync_mutex);
-+
-+ return VCHIQ_SUCCESS;
-+}
-+
-+static inline void
-+claim_slot(VCHIQ_SLOT_INFO_T *slot)
-+{
-+ slot->use_count++;
-+}
-+
-+static void
-+release_slot(VCHIQ_STATE_T *state, VCHIQ_SLOT_INFO_T *slot_info,
-+ VCHIQ_HEADER_T *header, VCHIQ_SERVICE_T *service)
-+{
-+ int release_count;
-+
-+ mutex_lock(&state->recycle_mutex);
-+
-+ if (header) {
-+ int msgid = header->msgid;
-+ if (((msgid & VCHIQ_MSGID_CLAIMED) == 0) ||
-+ (service && service->closing)) {
-+ mutex_unlock(&state->recycle_mutex);
-+ return;
-+ }
-+
-+ /* Rewrite the message header to prevent a double
-+ ** release */
-+ header->msgid = msgid & ~VCHIQ_MSGID_CLAIMED;
-+ }
-+
-+ release_count = slot_info->release_count;
-+ slot_info->release_count = ++release_count;
-+
-+ if (release_count == slot_info->use_count) {
-+ int slot_queue_recycle;
-+ /* Add to the freed queue */
-+
-+ /* A read barrier is necessary here to prevent speculative
-+ ** fetches of remote->slot_queue_recycle from overtaking the
-+ ** mutex. */
-+ rmb();
-+
-+ slot_queue_recycle = state->remote->slot_queue_recycle;
-+ state->remote->slot_queue[slot_queue_recycle &
-+ VCHIQ_SLOT_QUEUE_MASK] =
-+ SLOT_INDEX_FROM_INFO(state, slot_info);
-+ state->remote->slot_queue_recycle = slot_queue_recycle + 1;
-+ vchiq_log_info(vchiq_core_log_level,
-+ "%d: release_slot %d - recycle->%x",
-+ state->id, SLOT_INDEX_FROM_INFO(state, slot_info),
-+ state->remote->slot_queue_recycle);
-+
-+ /* A write barrier is necessary, but remote_event_signal
-+ ** contains one. */
-+ remote_event_signal(&state->remote->recycle);
-+ }
-+
-+ mutex_unlock(&state->recycle_mutex);
-+}
-+
-+/* Called by the slot handler - don't hold the bulk mutex */
-+static VCHIQ_STATUS_T
-+notify_bulks(VCHIQ_SERVICE_T *service, VCHIQ_BULK_QUEUE_T *queue,
-+ int retry_poll)
-+{
-+ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
-+
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%d: nb:%d %cx - p=%x rn=%x r=%x",
-+ service->state->id, service->localport,
-+ (queue == &service->bulk_tx) ? 't' : 'r',
-+ queue->process, queue->remote_notify, queue->remove);
-+
-+ if (service->state->is_master) {
-+ while (queue->remote_notify != queue->process) {
-+ VCHIQ_BULK_T *bulk =
-+ &queue->bulks[BULK_INDEX(queue->remote_notify)];
-+ int msgtype = (bulk->dir == VCHIQ_BULK_TRANSMIT) ?
-+ VCHIQ_MSG_BULK_RX_DONE : VCHIQ_MSG_BULK_TX_DONE;
-+ int msgid = VCHIQ_MAKE_MSG(msgtype, service->localport,
-+ service->remoteport);
-+ VCHIQ_ELEMENT_T element = { &bulk->actual, 4 };
-+ /* Only reply to non-dummy bulk requests */
-+ if (bulk->remote_data) {
-+ status = queue_message(service->state, NULL,
-+ msgid, &element, 1, 4, 0);
-+ if (status != VCHIQ_SUCCESS)
-+ break;
-+ }
-+ queue->remote_notify++;
-+ }
-+ } else {
-+ queue->remote_notify = queue->process;
-+ }
-+
-+ if (status == VCHIQ_SUCCESS) {
-+ while (queue->remove != queue->remote_notify) {
-+ VCHIQ_BULK_T *bulk =
-+ &queue->bulks[BULK_INDEX(queue->remove)];
-+
-+ /* Only generate callbacks for non-dummy bulk
-+ ** requests, and non-terminated services */
-+ if (bulk->data && service->instance) {
-+ if (bulk->actual != VCHIQ_BULK_ACTUAL_ABORTED) {
-+ if (bulk->dir == VCHIQ_BULK_TRANSMIT) {
-+ VCHIQ_SERVICE_STATS_INC(service,
-+ bulk_tx_count);
-+ VCHIQ_SERVICE_STATS_ADD(service,
-+ bulk_tx_bytes,
-+ bulk->actual);
-+ } else {
-+ VCHIQ_SERVICE_STATS_INC(service,
-+ bulk_rx_count);
-+ VCHIQ_SERVICE_STATS_ADD(service,
-+ bulk_rx_bytes,
-+ bulk->actual);
-+ }
-+ } else {
-+ VCHIQ_SERVICE_STATS_INC(service,
-+ bulk_aborted_count);
-+ }
-+ if (bulk->mode == VCHIQ_BULK_MODE_BLOCKING) {
-+ struct bulk_waiter *waiter;
-+ spin_lock(&bulk_waiter_spinlock);
-+ waiter = bulk->userdata;
-+ if (waiter) {
-+ waiter->actual = bulk->actual;
-+ up(&waiter->event);
-+ }
-+ spin_unlock(&bulk_waiter_spinlock);
-+ } else if (bulk->mode ==
-+ VCHIQ_BULK_MODE_CALLBACK) {
-+ VCHIQ_REASON_T reason = (bulk->dir ==
-+ VCHIQ_BULK_TRANSMIT) ?
-+ ((bulk->actual ==
-+ VCHIQ_BULK_ACTUAL_ABORTED) ?
-+ VCHIQ_BULK_TRANSMIT_ABORTED :
-+ VCHIQ_BULK_TRANSMIT_DONE) :
-+ ((bulk->actual ==
-+ VCHIQ_BULK_ACTUAL_ABORTED) ?
-+ VCHIQ_BULK_RECEIVE_ABORTED :
-+ VCHIQ_BULK_RECEIVE_DONE);
-+ status = make_service_callback(service,
-+ reason, NULL, bulk->userdata);
-+ if (status == VCHIQ_RETRY)
-+ break;
-+ }
-+ }
-+
-+ queue->remove++;
-+ up(&service->bulk_remove_event);
-+ }
-+ if (!retry_poll)
-+ status = VCHIQ_SUCCESS;
-+ }
-+
-+ if (status == VCHIQ_RETRY)
-+ request_poll(service->state, service,
-+ (queue == &service->bulk_tx) ?
-+ VCHIQ_POLL_TXNOTIFY : VCHIQ_POLL_RXNOTIFY);
-+
-+ return status;
-+}
-+
-+/* Called by the slot handler thread */
-+static void
-+poll_services(VCHIQ_STATE_T *state)
-+{
-+ int group, i;
-+
-+ for (group = 0; group < BITSET_SIZE(state->unused_service); group++) {
-+ uint32_t flags;
-+ flags = atomic_xchg(&state->poll_services[group], 0);
-+ for (i = 0; flags; i++) {
-+ if (flags & (1 << i)) {
-+ VCHIQ_SERVICE_T *service =
-+ find_service_by_port(state,
-+ (group<<5) + i);
-+ uint32_t service_flags;
-+ flags &= ~(1 << i);
-+ if (!service)
-+ continue;
-+ service_flags =
-+ atomic_xchg(&service->poll_flags, 0);
-+ if (service_flags &
-+ (1 << VCHIQ_POLL_REMOVE)) {
-+ vchiq_log_info(vchiq_core_log_level,
-+ "%d: ps - remove %d<->%d",
-+ state->id, service->localport,
-+ service->remoteport);
-+
-+ /* Make it look like a client, because
-+ it must be removed and not left in
-+ the LISTENING state. */
-+ service->public_fourcc =
-+ VCHIQ_FOURCC_INVALID;
-+
-+ if (vchiq_close_service_internal(
-+ service, 0/*!close_recvd*/) !=
-+ VCHIQ_SUCCESS)
-+ request_poll(state, service,
-+ VCHIQ_POLL_REMOVE);
-+ } else if (service_flags &
-+ (1 << VCHIQ_POLL_TERMINATE)) {
-+ vchiq_log_info(vchiq_core_log_level,
-+ "%d: ps - terminate %d<->%d",
-+ state->id, service->localport,
-+ service->remoteport);
-+ if (vchiq_close_service_internal(
-+ service, 0/*!close_recvd*/) !=
-+ VCHIQ_SUCCESS)
-+ request_poll(state, service,
-+ VCHIQ_POLL_TERMINATE);
-+ }
-+ if (service_flags & (1 << VCHIQ_POLL_TXNOTIFY))
-+ notify_bulks(service,
-+ &service->bulk_tx,
-+ 1/*retry_poll*/);
-+ if (service_flags & (1 << VCHIQ_POLL_RXNOTIFY))
-+ notify_bulks(service,
-+ &service->bulk_rx,
-+ 1/*retry_poll*/);
-+ unlock_service(service);
-+ }
-+ }
-+ }
-+}
-+
-+/* Called by the slot handler or application threads, holding the bulk mutex. */
-+static int
-+resolve_bulks(VCHIQ_SERVICE_T *service, VCHIQ_BULK_QUEUE_T *queue)
-+{
-+ VCHIQ_STATE_T *state = service->state;
-+ int resolved = 0;
-+ int rc;
-+
-+ while ((queue->process != queue->local_insert) &&
-+ (queue->process != queue->remote_insert)) {
-+ VCHIQ_BULK_T *bulk = &queue->bulks[BULK_INDEX(queue->process)];
-+
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%d: rb:%d %cx - li=%x ri=%x p=%x",
-+ state->id, service->localport,
-+ (queue == &service->bulk_tx) ? 't' : 'r',
-+ queue->local_insert, queue->remote_insert,
-+ queue->process);
-+
-+ WARN_ON(!((int)(queue->local_insert - queue->process) > 0));
-+ WARN_ON(!((int)(queue->remote_insert - queue->process) > 0));
-+
-+ rc = mutex_lock_interruptible(&state->bulk_transfer_mutex);
-+ if (rc != 0)
-+ break;
-+
-+ vchiq_transfer_bulk(bulk);
-+ mutex_unlock(&state->bulk_transfer_mutex);
-+
-+ if (vchiq_core_msg_log_level >= VCHIQ_LOG_INFO) {
-+ const char *header = (queue == &service->bulk_tx) ?
-+ "Send Bulk to" : "Recv Bulk from";
-+ if (bulk->actual != VCHIQ_BULK_ACTUAL_ABORTED)
-+ vchiq_log_info(vchiq_core_msg_log_level,
-+ "%s %c%c%c%c d:%d len:%d %x<->%x",
-+ header,
-+ VCHIQ_FOURCC_AS_4CHARS(
-+ service->base.fourcc),
-+ service->remoteport,
-+ bulk->size,
-+ (unsigned int)bulk->data,
-+ (unsigned int)bulk->remote_data);
-+ else
-+ vchiq_log_info(vchiq_core_msg_log_level,
-+ "%s %c%c%c%c d:%d ABORTED - tx len:%d,"
-+ " rx len:%d %x<->%x",
-+ header,
-+ VCHIQ_FOURCC_AS_4CHARS(
-+ service->base.fourcc),
-+ service->remoteport,
-+ bulk->size,
-+ bulk->remote_size,
-+ (unsigned int)bulk->data,
-+ (unsigned int)bulk->remote_data);
-+ }
-+
-+ vchiq_complete_bulk(bulk);
-+ queue->process++;
-+ resolved++;
-+ }
-+ return resolved;
-+}
-+
-+/* Called with the bulk_mutex held */
-+static void
-+abort_outstanding_bulks(VCHIQ_SERVICE_T *service, VCHIQ_BULK_QUEUE_T *queue)
-+{
-+ int is_tx = (queue == &service->bulk_tx);
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%d: aob:%d %cx - li=%x ri=%x p=%x",
-+ service->state->id, service->localport, is_tx ? 't' : 'r',
-+ queue->local_insert, queue->remote_insert, queue->process);
-+
-+ WARN_ON(!((int)(queue->local_insert - queue->process) >= 0));
-+ WARN_ON(!((int)(queue->remote_insert - queue->process) >= 0));
-+
-+ while ((queue->process != queue->local_insert) ||
-+ (queue->process != queue->remote_insert)) {
-+ VCHIQ_BULK_T *bulk = &queue->bulks[BULK_INDEX(queue->process)];
-+
-+ if (queue->process == queue->remote_insert) {
-+ /* fabricate a matching dummy bulk */
-+ bulk->remote_data = NULL;
-+ bulk->remote_size = 0;
-+ queue->remote_insert++;
-+ }
-+
-+ if (queue->process != queue->local_insert) {
-+ vchiq_complete_bulk(bulk);
-+
-+ vchiq_log_info(vchiq_core_msg_log_level,
-+ "%s %c%c%c%c d:%d ABORTED - tx len:%d, "
-+ "rx len:%d",
-+ is_tx ? "Send Bulk to" : "Recv Bulk from",
-+ VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc),
-+ service->remoteport,
-+ bulk->size,
-+ bulk->remote_size);
-+ } else {
-+ /* fabricate a matching dummy bulk */
-+ bulk->data = NULL;
-+ bulk->size = 0;
-+ bulk->actual = VCHIQ_BULK_ACTUAL_ABORTED;
-+ bulk->dir = is_tx ? VCHIQ_BULK_TRANSMIT :
-+ VCHIQ_BULK_RECEIVE;
-+ queue->local_insert++;
-+ }
-+
-+ queue->process++;
-+ }
-+}
-+
-+/* Called from the slot handler thread */
-+static void
-+pause_bulks(VCHIQ_STATE_T *state)
-+{
-+ if (unlikely(atomic_inc_return(&pause_bulks_count) != 1)) {
-+ WARN_ON_ONCE(1);
-+ atomic_set(&pause_bulks_count, 1);
-+ return;
-+ }
-+
-+ /* Block bulk transfers from all services */
-+ mutex_lock(&state->bulk_transfer_mutex);
-+}
-+
-+/* Called from the slot handler thread */
-+static void
-+resume_bulks(VCHIQ_STATE_T *state)
-+{
-+ int i;
-+ if (unlikely(atomic_dec_return(&pause_bulks_count) != 0)) {
-+ WARN_ON_ONCE(1);
-+ atomic_set(&pause_bulks_count, 0);
-+ return;
-+ }
-+
-+ /* Allow bulk transfers from all services */
-+ mutex_unlock(&state->bulk_transfer_mutex);
-+
-+ if (state->deferred_bulks == 0)
-+ return;
-+
-+ /* Deal with any bulks which had to be deferred due to being in
-+ * paused state. Don't try to match up to number of deferred bulks
-+ * in case we've had something come and close the service in the
-+ * interim - just process all bulk queues for all services */
-+ vchiq_log_info(vchiq_core_log_level, "%s: processing %d deferred bulks",
-+ __func__, state->deferred_bulks);
-+
-+ for (i = 0; i < state->unused_service; i++) {
-+ VCHIQ_SERVICE_T *service = state->services[i];
-+ int resolved_rx = 0;
-+ int resolved_tx = 0;
-+ if (!service || (service->srvstate != VCHIQ_SRVSTATE_OPEN))
-+ continue;
-+
-+ mutex_lock(&service->bulk_mutex);
-+ resolved_rx = resolve_bulks(service, &service->bulk_rx);
-+ resolved_tx = resolve_bulks(service, &service->bulk_tx);
-+ mutex_unlock(&service->bulk_mutex);
-+ if (resolved_rx)
-+ notify_bulks(service, &service->bulk_rx, 1);
-+ if (resolved_tx)
-+ notify_bulks(service, &service->bulk_tx, 1);
-+ }
-+ state->deferred_bulks = 0;
-+}
-+
-+static int
-+parse_open(VCHIQ_STATE_T *state, VCHIQ_HEADER_T *header)
-+{
-+ VCHIQ_SERVICE_T *service = NULL;
-+ int msgid, size;
-+ int type;
-+ unsigned int localport, remoteport;
-+
-+ msgid = header->msgid;
-+ size = header->size;
-+ type = VCHIQ_MSG_TYPE(msgid);
-+ localport = VCHIQ_MSG_DSTPORT(msgid);
-+ remoteport = VCHIQ_MSG_SRCPORT(msgid);
-+ if (size >= sizeof(struct vchiq_open_payload)) {
-+ const struct vchiq_open_payload *payload =
-+ (struct vchiq_open_payload *)header->data;
-+ unsigned int fourcc;
-+
-+ fourcc = payload->fourcc;
-+ vchiq_log_info(vchiq_core_log_level,
-+ "%d: prs OPEN@%x (%d->'%c%c%c%c')",
-+ state->id, (unsigned int)header,
-+ localport,
-+ VCHIQ_FOURCC_AS_4CHARS(fourcc));
-+
-+ service = get_listening_service(state, fourcc);
-+
-+ if (service) {
-+ /* A matching service exists */
-+ short version = payload->version;
-+ short version_min = payload->version_min;
-+ if ((service->version < version_min) ||
-+ (version < service->version_min)) {
-+ /* Version mismatch */
-+ vchiq_loud_error_header();
-+ vchiq_loud_error("%d: service %d (%c%c%c%c) "
-+ "version mismatch - local (%d, min %d)"
-+ " vs. remote (%d, min %d)",
-+ state->id, service->localport,
-+ VCHIQ_FOURCC_AS_4CHARS(fourcc),
-+ service->version, service->version_min,
-+ version, version_min);
-+ vchiq_loud_error_footer();
-+ unlock_service(service);
-+ service = NULL;
-+ goto fail_open;
-+ }
-+ service->peer_version = version;
-+
-+ if (service->srvstate == VCHIQ_SRVSTATE_LISTENING) {
-+ struct vchiq_openack_payload ack_payload = {
-+ service->version
-+ };
-+ VCHIQ_ELEMENT_T body = {
-+ &ack_payload,
-+ sizeof(ack_payload)
-+ };
-+
-+ /* Acknowledge the OPEN */
-+ if (service->sync) {
-+ if (queue_message_sync(state, NULL,
-+ VCHIQ_MAKE_MSG(
-+ VCHIQ_MSG_OPENACK,
-+ service->localport,
-+ remoteport),
-+ &body, 1, sizeof(ack_payload),
-+ 0) == VCHIQ_RETRY)
-+ goto bail_not_ready;
-+ } else {
-+ if (queue_message(state, NULL,
-+ VCHIQ_MAKE_MSG(
-+ VCHIQ_MSG_OPENACK,
-+ service->localport,
-+ remoteport),
-+ &body, 1, sizeof(ack_payload),
-+ 0) == VCHIQ_RETRY)
-+ goto bail_not_ready;
-+ }
-+
-+ /* The service is now open */
-+ vchiq_set_service_state(service,
-+ service->sync ? VCHIQ_SRVSTATE_OPENSYNC
-+ : VCHIQ_SRVSTATE_OPEN);
-+ }
-+
-+ service->remoteport = remoteport;
-+ service->client_id = ((int *)header->data)[1];
-+ if (make_service_callback(service, VCHIQ_SERVICE_OPENED,
-+ NULL, NULL) == VCHIQ_RETRY) {
-+ /* Bail out if not ready */
-+ service->remoteport = VCHIQ_PORT_FREE;
-+ goto bail_not_ready;
-+ }
-+
-+ /* Success - the message has been dealt with */
-+ unlock_service(service);
-+ return 1;
-+ }
-+ }
-+
-+fail_open:
-+ /* No available service, or an invalid request - send a CLOSE */
-+ if (queue_message(state, NULL,
-+ VCHIQ_MAKE_MSG(VCHIQ_MSG_CLOSE, 0, VCHIQ_MSG_SRCPORT(msgid)),
-+ NULL, 0, 0, 0) == VCHIQ_RETRY)
-+ goto bail_not_ready;
-+
-+ return 1;
-+
-+bail_not_ready:
-+ if (service)
-+ unlock_service(service);
-+
-+ return 0;
-+}
-+
-+/* Called by the slot handler thread */
-+static void
-+parse_rx_slots(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_SHARED_STATE_T *remote = state->remote;
-+ VCHIQ_SERVICE_T *service = NULL;
-+ int tx_pos;
-+ DEBUG_INITIALISE(state->local)
-+
-+ tx_pos = remote->tx_pos;
-+
-+ while (state->rx_pos != tx_pos) {
-+ VCHIQ_HEADER_T *header;
-+ int msgid, size;
-+ int type;
-+ unsigned int localport, remoteport;
-+
-+ DEBUG_TRACE(PARSE_LINE);
-+ if (!state->rx_data) {
-+ int rx_index;
-+ WARN_ON(!((state->rx_pos & VCHIQ_SLOT_MASK) == 0));
-+ rx_index = remote->slot_queue[
-+ SLOT_QUEUE_INDEX_FROM_POS(state->rx_pos) &
-+ VCHIQ_SLOT_QUEUE_MASK];
-+ state->rx_data = (char *)SLOT_DATA_FROM_INDEX(state,
-+ rx_index);
-+ state->rx_info = SLOT_INFO_FROM_INDEX(state, rx_index);
-+
-+ /* Initialise use_count to one, and increment
-+ ** release_count at the end of the slot to avoid
-+ ** releasing the slot prematurely. */
-+ state->rx_info->use_count = 1;
-+ state->rx_info->release_count = 0;
-+ }
-+
-+ header = (VCHIQ_HEADER_T *)(state->rx_data +
-+ (state->rx_pos & VCHIQ_SLOT_MASK));
-+ DEBUG_VALUE(PARSE_HEADER, (int)header);
-+ msgid = header->msgid;
-+ DEBUG_VALUE(PARSE_MSGID, msgid);
-+ size = header->size;
-+ type = VCHIQ_MSG_TYPE(msgid);
-+ localport = VCHIQ_MSG_DSTPORT(msgid);
-+ remoteport = VCHIQ_MSG_SRCPORT(msgid);
-+
-+ if (type != VCHIQ_MSG_DATA)
-+ VCHIQ_STATS_INC(state, ctrl_rx_count);
-+
-+ switch (type) {
-+ case VCHIQ_MSG_OPENACK:
-+ case VCHIQ_MSG_CLOSE:
-+ case VCHIQ_MSG_DATA:
-+ case VCHIQ_MSG_BULK_RX:
-+ case VCHIQ_MSG_BULK_TX:
-+ case VCHIQ_MSG_BULK_RX_DONE:
-+ case VCHIQ_MSG_BULK_TX_DONE:
-+ service = find_service_by_port(state, localport);
-+ if ((!service || service->remoteport != remoteport) &&
-+ (localport == 0) &&
-+ (type == VCHIQ_MSG_CLOSE)) {
-+ /* This could be a CLOSE from a client which
-+ hadn't yet received the OPENACK - look for
-+ the connected service */
-+ if (service)
-+ unlock_service(service);
-+ service = get_connected_service(state,
-+ remoteport);
-+ if (service)
-+ vchiq_log_warning(vchiq_core_log_level,
-+ "%d: prs %s@%x (%d->%d) - "
-+ "found connected service %d",
-+ state->id, msg_type_str(type),
-+ (unsigned int)header,
-+ remoteport, localport,
-+ service->localport);
-+ }
-+
-+ if (!service) {
-+ vchiq_log_error(vchiq_core_log_level,
-+ "%d: prs %s@%x (%d->%d) - "
-+ "invalid/closed service %d",
-+ state->id, msg_type_str(type),
-+ (unsigned int)header,
-+ remoteport, localport, localport);
-+ goto skip_message;
-+ }
-+ break;
-+ default:
-+ break;
-+ }
-+
-+ if (vchiq_core_msg_log_level >= VCHIQ_LOG_INFO) {
-+ int svc_fourcc;
-+
-+ svc_fourcc = service
-+ ? service->base.fourcc
-+ : VCHIQ_MAKE_FOURCC('?', '?', '?', '?');
-+ vchiq_log_info(vchiq_core_msg_log_level,
-+ "Rcvd Msg %s(%u) from %c%c%c%c s:%d d:%d "
-+ "len:%d",
-+ msg_type_str(type), type,
-+ VCHIQ_FOURCC_AS_4CHARS(svc_fourcc),
-+ remoteport, localport, size);
-+ if (size > 0)
-+ vchiq_log_dump_mem("Rcvd", 0, header->data,
-+ min(64, size));
-+ }
-+
-+ if (((unsigned int)header & VCHIQ_SLOT_MASK) + calc_stride(size)
-+ > VCHIQ_SLOT_SIZE) {
-+ vchiq_log_error(vchiq_core_log_level,
-+ "header %x (msgid %x) - size %x too big for "
-+ "slot",
-+ (unsigned int)header, (unsigned int)msgid,
-+ (unsigned int)size);
-+ WARN(1, "oversized for slot\n");
-+ }
-+
-+ switch (type) {
-+ case VCHIQ_MSG_OPEN:
-+ WARN_ON(!(VCHIQ_MSG_DSTPORT(msgid) == 0));
-+ if (!parse_open(state, header))
-+ goto bail_not_ready;
-+ break;
-+ case VCHIQ_MSG_OPENACK:
-+ if (size >= sizeof(struct vchiq_openack_payload)) {
-+ const struct vchiq_openack_payload *payload =
-+ (struct vchiq_openack_payload *)
-+ header->data;
-+ service->peer_version = payload->version;
-+ }
-+ vchiq_log_info(vchiq_core_log_level,
-+ "%d: prs OPENACK@%x,%x (%d->%d) v:%d",
-+ state->id, (unsigned int)header, size,
-+ remoteport, localport, service->peer_version);
-+ if (service->srvstate ==
-+ VCHIQ_SRVSTATE_OPENING) {
-+ service->remoteport = remoteport;
-+ vchiq_set_service_state(service,
-+ VCHIQ_SRVSTATE_OPEN);
-+ up(&service->remove_event);
-+ } else
-+ vchiq_log_error(vchiq_core_log_level,
-+ "OPENACK received in state %s",
-+ srvstate_names[service->srvstate]);
-+ break;
-+ case VCHIQ_MSG_CLOSE:
-+ WARN_ON(size != 0); /* There should be no data */
-+
-+ vchiq_log_info(vchiq_core_log_level,
-+ "%d: prs CLOSE@%x (%d->%d)",
-+ state->id, (unsigned int)header,
-+ remoteport, localport);
-+
-+ mark_service_closing_internal(service, 1);
-+
-+ if (vchiq_close_service_internal(service,
-+ 1/*close_recvd*/) == VCHIQ_RETRY)
-+ goto bail_not_ready;
-+
-+ vchiq_log_info(vchiq_core_log_level,
-+ "Close Service %c%c%c%c s:%u d:%d",
-+ VCHIQ_FOURCC_AS_4CHARS(service->base.fourcc),
-+ service->localport,
-+ service->remoteport);
-+ break;
-+ case VCHIQ_MSG_DATA:
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%d: prs DATA@%x,%x (%d->%d)",
-+ state->id, (unsigned int)header, size,
-+ remoteport, localport);
-+
-+ if ((service->remoteport == remoteport)
-+ && (service->srvstate ==
-+ VCHIQ_SRVSTATE_OPEN)) {
-+ header->msgid = msgid | VCHIQ_MSGID_CLAIMED;
-+ claim_slot(state->rx_info);
-+ DEBUG_TRACE(PARSE_LINE);
-+ if (make_service_callback(service,
-+ VCHIQ_MESSAGE_AVAILABLE, header,
-+ NULL) == VCHIQ_RETRY) {
-+ DEBUG_TRACE(PARSE_LINE);
-+ goto bail_not_ready;
-+ }
-+ VCHIQ_SERVICE_STATS_INC(service, ctrl_rx_count);
-+ VCHIQ_SERVICE_STATS_ADD(service, ctrl_rx_bytes,
-+ size);
-+ } else {
-+ VCHIQ_STATS_INC(state, error_count);
-+ }
-+ break;
-+ case VCHIQ_MSG_CONNECT:
-+ vchiq_log_info(vchiq_core_log_level,
-+ "%d: prs CONNECT@%x",
-+ state->id, (unsigned int)header);
-+ up(&state->connect);
-+ break;
-+ case VCHIQ_MSG_BULK_RX:
-+ case VCHIQ_MSG_BULK_TX: {
-+ VCHIQ_BULK_QUEUE_T *queue;
-+ WARN_ON(!state->is_master);
-+ queue = (type == VCHIQ_MSG_BULK_RX) ?
-+ &service->bulk_tx : &service->bulk_rx;
-+ if ((service->remoteport == remoteport)
-+ && (service->srvstate ==
-+ VCHIQ_SRVSTATE_OPEN)) {
-+ VCHIQ_BULK_T *bulk;
-+ int resolved = 0;
-+
-+ DEBUG_TRACE(PARSE_LINE);
-+ if (mutex_lock_interruptible(
-+ &service->bulk_mutex) != 0) {
-+ DEBUG_TRACE(PARSE_LINE);
-+ goto bail_not_ready;
-+ }
-+
-+ WARN_ON(!(queue->remote_insert < queue->remove +
-+ VCHIQ_NUM_SERVICE_BULKS));
-+ bulk = &queue->bulks[
-+ BULK_INDEX(queue->remote_insert)];
-+ bulk->remote_data =
-+ (void *)((int *)header->data)[0];
-+ bulk->remote_size = ((int *)header->data)[1];
-+ wmb();
-+
-+ vchiq_log_info(vchiq_core_log_level,
-+ "%d: prs %s@%x (%d->%d) %x@%x",
-+ state->id, msg_type_str(type),
-+ (unsigned int)header,
-+ remoteport, localport,
-+ bulk->remote_size,
-+ (unsigned int)bulk->remote_data);
-+
-+ queue->remote_insert++;
-+
-+ if (atomic_read(&pause_bulks_count)) {
-+ state->deferred_bulks++;
-+ vchiq_log_info(vchiq_core_log_level,
-+ "%s: deferring bulk (%d)",
-+ __func__,
-+ state->deferred_bulks);
-+ if (state->conn_state !=
-+ VCHIQ_CONNSTATE_PAUSE_SENT)
-+ vchiq_log_error(
-+ vchiq_core_log_level,
-+ "%s: bulks paused in "
-+ "unexpected state %s",
-+ __func__,
-+ conn_state_names[
-+ state->conn_state]);
-+ } else if (state->conn_state ==
-+ VCHIQ_CONNSTATE_CONNECTED) {
-+ DEBUG_TRACE(PARSE_LINE);
-+ resolved = resolve_bulks(service,
-+ queue);
-+ }
-+
-+ mutex_unlock(&service->bulk_mutex);
-+ if (resolved)
-+ notify_bulks(service, queue,
-+ 1/*retry_poll*/);
-+ }
-+ } break;
-+ case VCHIQ_MSG_BULK_RX_DONE:
-+ case VCHIQ_MSG_BULK_TX_DONE:
-+ WARN_ON(state->is_master);
-+ if ((service->remoteport == remoteport)
-+ && (service->srvstate !=
-+ VCHIQ_SRVSTATE_FREE)) {
-+ VCHIQ_BULK_QUEUE_T *queue;
-+ VCHIQ_BULK_T *bulk;
-+
-+ queue = (type == VCHIQ_MSG_BULK_RX_DONE) ?
-+ &service->bulk_rx : &service->bulk_tx;
-+
-+ DEBUG_TRACE(PARSE_LINE);
-+ if (mutex_lock_interruptible(
-+ &service->bulk_mutex) != 0) {
-+ DEBUG_TRACE(PARSE_LINE);
-+ goto bail_not_ready;
-+ }
-+ if ((int)(queue->remote_insert -
-+ queue->local_insert) >= 0) {
-+ vchiq_log_error(vchiq_core_log_level,
-+ "%d: prs %s@%x (%d->%d) "
-+ "unexpected (ri=%d,li=%d)",
-+ state->id, msg_type_str(type),
-+ (unsigned int)header,
-+ remoteport, localport,
-+ queue->remote_insert,
-+ queue->local_insert);
-+ mutex_unlock(&service->bulk_mutex);
-+ break;
-+ }
-+
-+ BUG_ON(queue->process == queue->local_insert);
-+ BUG_ON(queue->process != queue->remote_insert);
-+
-+ bulk = &queue->bulks[
-+ BULK_INDEX(queue->remote_insert)];
-+ bulk->actual = *(int *)header->data;
-+ queue->remote_insert++;
-+
-+ vchiq_log_info(vchiq_core_log_level,
-+ "%d: prs %s@%x (%d->%d) %x@%x",
-+ state->id, msg_type_str(type),
-+ (unsigned int)header,
-+ remoteport, localport,
-+ bulk->actual, (unsigned int)bulk->data);
-+
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%d: prs:%d %cx li=%x ri=%x p=%x",
-+ state->id, localport,
-+ (type == VCHIQ_MSG_BULK_RX_DONE) ?
-+ 'r' : 't',
-+ queue->local_insert,
-+ queue->remote_insert, queue->process);
-+
-+ DEBUG_TRACE(PARSE_LINE);
-+ WARN_ON(queue->process == queue->local_insert);
-+ vchiq_complete_bulk(bulk);
-+ queue->process++;
-+ mutex_unlock(&service->bulk_mutex);
-+ DEBUG_TRACE(PARSE_LINE);
-+ notify_bulks(service, queue, 1/*retry_poll*/);
-+ DEBUG_TRACE(PARSE_LINE);
-+ }
-+ break;
-+ case VCHIQ_MSG_PADDING:
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%d: prs PADDING@%x,%x",
-+ state->id, (unsigned int)header, size);
-+ break;
-+ case VCHIQ_MSG_PAUSE:
-+ /* If initiated, signal the application thread */
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%d: prs PAUSE@%x,%x",
-+ state->id, (unsigned int)header, size);
-+ if (state->conn_state == VCHIQ_CONNSTATE_PAUSED) {
-+ vchiq_log_error(vchiq_core_log_level,
-+ "%d: PAUSE received in state PAUSED",
-+ state->id);
-+ break;
-+ }
-+ if (state->conn_state != VCHIQ_CONNSTATE_PAUSE_SENT) {
-+ /* Send a PAUSE in response */
-+ if (queue_message(state, NULL,
-+ VCHIQ_MAKE_MSG(VCHIQ_MSG_PAUSE, 0, 0),
-+ NULL, 0, 0, 0) == VCHIQ_RETRY)
-+ goto bail_not_ready;
-+ if (state->is_master)
-+ pause_bulks(state);
-+ }
-+ /* At this point slot_mutex is held */
-+ vchiq_set_conn_state(state, VCHIQ_CONNSTATE_PAUSED);
-+ vchiq_platform_paused(state);
-+ break;
-+ case VCHIQ_MSG_RESUME:
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%d: prs RESUME@%x,%x",
-+ state->id, (unsigned int)header, size);
-+ /* Release the slot mutex */
-+ mutex_unlock(&state->slot_mutex);
-+ if (state->is_master)
-+ resume_bulks(state);
-+ vchiq_set_conn_state(state, VCHIQ_CONNSTATE_CONNECTED);
-+ vchiq_platform_resumed(state);
-+ break;
-+
-+ case VCHIQ_MSG_REMOTE_USE:
-+ vchiq_on_remote_use(state);
-+ break;
-+ case VCHIQ_MSG_REMOTE_RELEASE:
-+ vchiq_on_remote_release(state);
-+ break;
-+ case VCHIQ_MSG_REMOTE_USE_ACTIVE:
-+ vchiq_on_remote_use_active(state);
-+ break;
-+
-+ default:
-+ vchiq_log_error(vchiq_core_log_level,
-+ "%d: prs invalid msgid %x@%x,%x",
-+ state->id, msgid, (unsigned int)header, size);
-+ WARN(1, "invalid message\n");
-+ break;
-+ }
-+
-+skip_message:
-+ if (service) {
-+ unlock_service(service);
-+ service = NULL;
-+ }
-+
-+ state->rx_pos += calc_stride(size);
-+
-+ DEBUG_TRACE(PARSE_LINE);
-+ /* Perform some housekeeping when the end of the slot is
-+ ** reached. */
-+ if ((state->rx_pos & VCHIQ_SLOT_MASK) == 0) {
-+ /* Remove the extra reference count. */
-+ release_slot(state, state->rx_info, NULL, NULL);
-+ state->rx_data = NULL;
-+ }
-+ }
-+
-+bail_not_ready:
-+ if (service)
-+ unlock_service(service);
-+}
-+
-+/* Called by the slot handler thread */
-+static int
-+slot_handler_func(void *v)
-+{
-+ VCHIQ_STATE_T *state = (VCHIQ_STATE_T *) v;
-+ VCHIQ_SHARED_STATE_T *local = state->local;
-+ DEBUG_INITIALISE(local)
-+
-+ while (1) {
-+ DEBUG_COUNT(SLOT_HANDLER_COUNT);
-+ DEBUG_TRACE(SLOT_HANDLER_LINE);
-+ remote_event_wait(&local->trigger);
-+
-+ rmb();
-+
-+ DEBUG_TRACE(SLOT_HANDLER_LINE);
-+ if (state->poll_needed) {
-+ /* Check if we need to suspend - may change our
-+ * conn_state */
-+ vchiq_platform_check_suspend(state);
-+
-+ state->poll_needed = 0;
-+
-+ /* Handle service polling and other rare conditions here
-+ ** out of the mainline code */
-+ switch (state->conn_state) {
-+ case VCHIQ_CONNSTATE_CONNECTED:
-+ /* Poll the services as requested */
-+ poll_services(state);
-+ break;
-+
-+ case VCHIQ_CONNSTATE_PAUSING:
-+ if (state->is_master)
-+ pause_bulks(state);
-+ if (queue_message(state, NULL,
-+ VCHIQ_MAKE_MSG(VCHIQ_MSG_PAUSE, 0, 0),
-+ NULL, 0, 0, 0) != VCHIQ_RETRY) {
-+ vchiq_set_conn_state(state,
-+ VCHIQ_CONNSTATE_PAUSE_SENT);
-+ } else {
-+ if (state->is_master)
-+ resume_bulks(state);
-+ /* Retry later */
-+ state->poll_needed = 1;
-+ }
-+ break;
-+
-+ case VCHIQ_CONNSTATE_PAUSED:
-+ vchiq_platform_resume(state);
-+ break;
-+
-+ case VCHIQ_CONNSTATE_RESUMING:
-+ if (queue_message(state, NULL,
-+ VCHIQ_MAKE_MSG(VCHIQ_MSG_RESUME, 0, 0),
-+ NULL, 0, 0, 0) != VCHIQ_RETRY) {
-+ if (state->is_master)
-+ resume_bulks(state);
-+ vchiq_set_conn_state(state,
-+ VCHIQ_CONNSTATE_CONNECTED);
-+ vchiq_platform_resumed(state);
-+ } else {
-+ /* This should really be impossible,
-+ ** since the PAUSE should have flushed
-+ ** through outstanding messages. */
-+ vchiq_log_error(vchiq_core_log_level,
-+ "Failed to send RESUME "
-+ "message");
-+ BUG();
-+ }
-+ break;
-+
-+ case VCHIQ_CONNSTATE_PAUSE_TIMEOUT:
-+ case VCHIQ_CONNSTATE_RESUME_TIMEOUT:
-+ vchiq_platform_handle_timeout(state);
-+ break;
-+ default:
-+ break;
-+ }
-+
-+
-+ }
-+
-+ DEBUG_TRACE(SLOT_HANDLER_LINE);
-+ parse_rx_slots(state);
-+ }
-+ return 0;
-+}
-+
-+
-+/* Called by the recycle thread */
-+static int
-+recycle_func(void *v)
-+{
-+ VCHIQ_STATE_T *state = (VCHIQ_STATE_T *) v;
-+ VCHIQ_SHARED_STATE_T *local = state->local;
-+
-+ while (1) {
-+ remote_event_wait(&local->recycle);
-+
-+ process_free_queue(state);
-+ }
-+ return 0;
-+}
-+
-+
-+/* Called by the sync thread */
-+static int
-+sync_func(void *v)
-+{
-+ VCHIQ_STATE_T *state = (VCHIQ_STATE_T *) v;
-+ VCHIQ_SHARED_STATE_T *local = state->local;
-+ VCHIQ_HEADER_T *header = (VCHIQ_HEADER_T *)SLOT_DATA_FROM_INDEX(state,
-+ state->remote->slot_sync);
-+
-+ while (1) {
-+ VCHIQ_SERVICE_T *service;
-+ int msgid, size;
-+ int type;
-+ unsigned int localport, remoteport;
-+
-+ remote_event_wait(&local->sync_trigger);
-+
-+ rmb();
-+
-+ msgid = header->msgid;
-+ size = header->size;
-+ type = VCHIQ_MSG_TYPE(msgid);
-+ localport = VCHIQ_MSG_DSTPORT(msgid);
-+ remoteport = VCHIQ_MSG_SRCPORT(msgid);
-+
-+ service = find_service_by_port(state, localport);
-+
-+ if (!service) {
-+ vchiq_log_error(vchiq_sync_log_level,
-+ "%d: sf %s@%x (%d->%d) - "
-+ "invalid/closed service %d",
-+ state->id, msg_type_str(type),
-+ (unsigned int)header,
-+ remoteport, localport, localport);
-+ release_message_sync(state, header);
-+ continue;
-+ }
-+
-+ if (vchiq_sync_log_level >= VCHIQ_LOG_TRACE) {
-+ int svc_fourcc;
-+
-+ svc_fourcc = service
-+ ? service->base.fourcc
-+ : VCHIQ_MAKE_FOURCC('?', '?', '?', '?');
-+ vchiq_log_trace(vchiq_sync_log_level,
-+ "Rcvd Msg %s from %c%c%c%c s:%d d:%d len:%d",
-+ msg_type_str(type),
-+ VCHIQ_FOURCC_AS_4CHARS(svc_fourcc),
-+ remoteport, localport, size);
-+ if (size > 0)
-+ vchiq_log_dump_mem("Rcvd", 0, header->data,
-+ min(64, size));
-+ }
-+
-+ switch (type) {
-+ case VCHIQ_MSG_OPENACK:
-+ if (size >= sizeof(struct vchiq_openack_payload)) {
-+ const struct vchiq_openack_payload *payload =
-+ (struct vchiq_openack_payload *)
-+ header->data;
-+ service->peer_version = payload->version;
-+ }
-+ vchiq_log_info(vchiq_sync_log_level,
-+ "%d: sf OPENACK@%x,%x (%d->%d) v:%d",
-+ state->id, (unsigned int)header, size,
-+ remoteport, localport, service->peer_version);
-+ if (service->srvstate == VCHIQ_SRVSTATE_OPENING) {
-+ service->remoteport = remoteport;
-+ vchiq_set_service_state(service,
-+ VCHIQ_SRVSTATE_OPENSYNC);
-+ up(&service->remove_event);
-+ }
-+ release_message_sync(state, header);
-+ break;
-+
-+ case VCHIQ_MSG_DATA:
-+ vchiq_log_trace(vchiq_sync_log_level,
-+ "%d: sf DATA@%x,%x (%d->%d)",
-+ state->id, (unsigned int)header, size,
-+ remoteport, localport);
-+
-+ if ((service->remoteport == remoteport) &&
-+ (service->srvstate ==
-+ VCHIQ_SRVSTATE_OPENSYNC)) {
-+ if (make_service_callback(service,
-+ VCHIQ_MESSAGE_AVAILABLE, header,
-+ NULL) == VCHIQ_RETRY)
-+ vchiq_log_error(vchiq_sync_log_level,
-+ "synchronous callback to "
-+ "service %d returns "
-+ "VCHIQ_RETRY",
-+ localport);
-+ }
-+ break;
-+
-+ default:
-+ vchiq_log_error(vchiq_sync_log_level,
-+ "%d: sf unexpected msgid %x@%x,%x",
-+ state->id, msgid, (unsigned int)header, size);
-+ release_message_sync(state, header);
-+ break;
-+ }
-+
-+ unlock_service(service);
-+ }
-+
-+ return 0;
-+}
-+
-+
-+static void
-+init_bulk_queue(VCHIQ_BULK_QUEUE_T *queue)
-+{
-+ queue->local_insert = 0;
-+ queue->remote_insert = 0;
-+ queue->process = 0;
-+ queue->remote_notify = 0;
-+ queue->remove = 0;
-+}
-+
-+
-+inline const char *
-+get_conn_state_name(VCHIQ_CONNSTATE_T conn_state)
-+{
-+ return conn_state_names[conn_state];
-+}
-+
-+
-+VCHIQ_SLOT_ZERO_T *
-+vchiq_init_slots(void *mem_base, int mem_size)
-+{
-+ int mem_align = (VCHIQ_SLOT_SIZE - (int)mem_base) & VCHIQ_SLOT_MASK;
-+ VCHIQ_SLOT_ZERO_T *slot_zero =
-+ (VCHIQ_SLOT_ZERO_T *)((char *)mem_base + mem_align);
-+ int num_slots = (mem_size - mem_align)/VCHIQ_SLOT_SIZE;
-+ int first_data_slot = VCHIQ_SLOT_ZERO_SLOTS;
-+
-+ /* Ensure there is enough memory to run an absolutely minimum system */
-+ num_slots -= first_data_slot;
-+
-+ if (num_slots < 4) {
-+ vchiq_log_error(vchiq_core_log_level,
-+ "vchiq_init_slots - insufficient memory %x bytes",
-+ mem_size);
-+ return NULL;
-+ }
-+
-+ memset(slot_zero, 0, sizeof(VCHIQ_SLOT_ZERO_T));
-+
-+ slot_zero->magic = VCHIQ_MAGIC;
-+ slot_zero->version = VCHIQ_VERSION;
-+ slot_zero->version_min = VCHIQ_VERSION_MIN;
-+ slot_zero->slot_zero_size = sizeof(VCHIQ_SLOT_ZERO_T);
-+ slot_zero->slot_size = VCHIQ_SLOT_SIZE;
-+ slot_zero->max_slots = VCHIQ_MAX_SLOTS;
-+ slot_zero->max_slots_per_side = VCHIQ_MAX_SLOTS_PER_SIDE;
-+
-+ slot_zero->master.slot_sync = first_data_slot;
-+ slot_zero->master.slot_first = first_data_slot + 1;
-+ slot_zero->master.slot_last = first_data_slot + (num_slots/2) - 1;
-+ slot_zero->slave.slot_sync = first_data_slot + (num_slots/2);
-+ slot_zero->slave.slot_first = first_data_slot + (num_slots/2) + 1;
-+ slot_zero->slave.slot_last = first_data_slot + num_slots - 1;
-+
-+ return slot_zero;
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_init_state(VCHIQ_STATE_T *state, VCHIQ_SLOT_ZERO_T *slot_zero,
-+ int is_master)
-+{
-+ VCHIQ_SHARED_STATE_T *local;
-+ VCHIQ_SHARED_STATE_T *remote;
-+ VCHIQ_STATUS_T status;
-+ char threadname[10];
-+ static int id;
-+ int i;
-+
-+ vchiq_log_warning(vchiq_core_log_level,
-+ "%s: slot_zero = 0x%08lx, is_master = %d",
-+ __func__, (unsigned long)slot_zero, is_master);
-+
-+ /* Check the input configuration */
-+
-+ if (slot_zero->magic != VCHIQ_MAGIC) {
-+ vchiq_loud_error_header();
-+ vchiq_loud_error("Invalid VCHIQ magic value found.");
-+ vchiq_loud_error("slot_zero=%x: magic=%x (expected %x)",
-+ (unsigned int)slot_zero, slot_zero->magic, VCHIQ_MAGIC);
-+ vchiq_loud_error_footer();
-+ return VCHIQ_ERROR;
-+ }
-+
-+ if (slot_zero->version < VCHIQ_VERSION_MIN) {
-+ vchiq_loud_error_header();
-+ vchiq_loud_error("Incompatible VCHIQ versions found.");
-+ vchiq_loud_error("slot_zero=%x: VideoCore version=%d "
-+ "(minimum %d)",
-+ (unsigned int)slot_zero, slot_zero->version,
-+ VCHIQ_VERSION_MIN);
-+ vchiq_loud_error("Restart with a newer VideoCore image.");
-+ vchiq_loud_error_footer();
-+ return VCHIQ_ERROR;
-+ }
-+
-+ if (VCHIQ_VERSION < slot_zero->version_min) {
-+ vchiq_loud_error_header();
-+ vchiq_loud_error("Incompatible VCHIQ versions found.");
-+ vchiq_loud_error("slot_zero=%x: version=%d (VideoCore "
-+ "minimum %d)",
-+ (unsigned int)slot_zero, VCHIQ_VERSION,
-+ slot_zero->version_min);
-+ vchiq_loud_error("Restart with a newer kernel.");
-+ vchiq_loud_error_footer();
-+ return VCHIQ_ERROR;
-+ }
-+
-+ if ((slot_zero->slot_zero_size != sizeof(VCHIQ_SLOT_ZERO_T)) ||
-+ (slot_zero->slot_size != VCHIQ_SLOT_SIZE) ||
-+ (slot_zero->max_slots != VCHIQ_MAX_SLOTS) ||
-+ (slot_zero->max_slots_per_side != VCHIQ_MAX_SLOTS_PER_SIDE)) {
-+ vchiq_loud_error_header();
-+ if (slot_zero->slot_zero_size != sizeof(VCHIQ_SLOT_ZERO_T))
-+ vchiq_loud_error("slot_zero=%x: slot_zero_size=%x "
-+ "(expected %x)",
-+ (unsigned int)slot_zero,
-+ slot_zero->slot_zero_size,
-+ sizeof(VCHIQ_SLOT_ZERO_T));
-+ if (slot_zero->slot_size != VCHIQ_SLOT_SIZE)
-+ vchiq_loud_error("slot_zero=%x: slot_size=%d "
-+ "(expected %d",
-+ (unsigned int)slot_zero, slot_zero->slot_size,
-+ VCHIQ_SLOT_SIZE);
-+ if (slot_zero->max_slots != VCHIQ_MAX_SLOTS)
-+ vchiq_loud_error("slot_zero=%x: max_slots=%d "
-+ "(expected %d)",
-+ (unsigned int)slot_zero, slot_zero->max_slots,
-+ VCHIQ_MAX_SLOTS);
-+ if (slot_zero->max_slots_per_side != VCHIQ_MAX_SLOTS_PER_SIDE)
-+ vchiq_loud_error("slot_zero=%x: max_slots_per_side=%d "
-+ "(expected %d)",
-+ (unsigned int)slot_zero,
-+ slot_zero->max_slots_per_side,
-+ VCHIQ_MAX_SLOTS_PER_SIDE);
-+ vchiq_loud_error_footer();
-+ return VCHIQ_ERROR;
-+ }
-+
-+ if (is_master) {
-+ local = &slot_zero->master;
-+ remote = &slot_zero->slave;
-+ } else {
-+ local = &slot_zero->slave;
-+ remote = &slot_zero->master;
-+ }
-+
-+ if (local->initialised) {
-+ vchiq_loud_error_header();
-+ if (remote->initialised)
-+ vchiq_loud_error("local state has already been "
-+ "initialised");
-+ else
-+ vchiq_loud_error("master/slave mismatch - two %ss",
-+ is_master ? "master" : "slave");
-+ vchiq_loud_error_footer();
-+ return VCHIQ_ERROR;
-+ }
-+
-+ memset(state, 0, sizeof(VCHIQ_STATE_T));
-+
-+ state->id = id++;
-+ state->is_master = is_master;
-+
-+ /*
-+ initialize shared state pointers
-+ */
-+
-+ state->local = local;
-+ state->remote = remote;
-+ state->slot_data = (VCHIQ_SLOT_T *)slot_zero;
-+
-+ /*
-+ initialize events and mutexes
-+ */
-+
-+ sema_init(&state->connect, 0);
-+ mutex_init(&state->mutex);
-+ sema_init(&state->trigger_event, 0);
-+ sema_init(&state->recycle_event, 0);
-+ sema_init(&state->sync_trigger_event, 0);
-+ sema_init(&state->sync_release_event, 0);
-+
-+ mutex_init(&state->slot_mutex);
-+ mutex_init(&state->recycle_mutex);
-+ mutex_init(&state->sync_mutex);
-+ mutex_init(&state->bulk_transfer_mutex);
-+
-+ sema_init(&state->slot_available_event, 0);
-+ sema_init(&state->slot_remove_event, 0);
-+ sema_init(&state->data_quota_event, 0);
-+
-+ state->slot_queue_available = 0;
-+
-+ for (i = 0; i < VCHIQ_MAX_SERVICES; i++) {
-+ VCHIQ_SERVICE_QUOTA_T *service_quota =
-+ &state->service_quotas[i];
-+ sema_init(&service_quota->quota_event, 0);
-+ }
-+
-+ for (i = local->slot_first; i <= local->slot_last; i++) {
-+ local->slot_queue[state->slot_queue_available++] = i;
-+ up(&state->slot_available_event);
-+ }
-+
-+ state->default_slot_quota = state->slot_queue_available/2;
-+ state->default_message_quota =
-+ min((unsigned short)(state->default_slot_quota * 256),
-+ (unsigned short)~0);
-+
-+ state->previous_data_index = -1;
-+ state->data_use_count = 0;
-+ state->data_quota = state->slot_queue_available - 1;
-+
-+ local->trigger.event = &state->trigger_event;
-+ remote_event_create(&local->trigger);
-+ local->tx_pos = 0;
-+
-+ local->recycle.event = &state->recycle_event;
-+ remote_event_create(&local->recycle);
-+ local->slot_queue_recycle = state->slot_queue_available;
-+
-+ local->sync_trigger.event = &state->sync_trigger_event;
-+ remote_event_create(&local->sync_trigger);
-+
-+ local->sync_release.event = &state->sync_release_event;
-+ remote_event_create(&local->sync_release);
-+
-+ /* At start-of-day, the slot is empty and available */
-+ ((VCHIQ_HEADER_T *)SLOT_DATA_FROM_INDEX(state, local->slot_sync))->msgid
-+ = VCHIQ_MSGID_PADDING;
-+ remote_event_signal_local(&local->sync_release);
-+
-+ local->debug[DEBUG_ENTRIES] = DEBUG_MAX;
-+
-+ status = vchiq_platform_init_state(state);
-+
-+ /*
-+ bring up slot handler thread
-+ */
-+ snprintf(threadname, sizeof(threadname), "VCHIQ-%d", state->id);
-+ state->slot_handler_thread = kthread_create(&slot_handler_func,
-+ (void *)state,
-+ threadname);
-+
-+ if (state->slot_handler_thread == NULL) {
-+ vchiq_loud_error_header();
-+ vchiq_loud_error("couldn't create thread %s", threadname);
-+ vchiq_loud_error_footer();
-+ return VCHIQ_ERROR;
-+ }
-+ set_user_nice(state->slot_handler_thread, -19);
-+ wake_up_process(state->slot_handler_thread);
-+
-+ snprintf(threadname, sizeof(threadname), "VCHIQr-%d", state->id);
-+ state->recycle_thread = kthread_create(&recycle_func,
-+ (void *)state,
-+ threadname);
-+ if (state->recycle_thread == NULL) {
-+ vchiq_loud_error_header();
-+ vchiq_loud_error("couldn't create thread %s", threadname);
-+ vchiq_loud_error_footer();
-+ return VCHIQ_ERROR;
-+ }
-+ set_user_nice(state->recycle_thread, -19);
-+ wake_up_process(state->recycle_thread);
-+
-+ snprintf(threadname, sizeof(threadname), "VCHIQs-%d", state->id);
-+ state->sync_thread = kthread_create(&sync_func,
-+ (void *)state,
-+ threadname);
-+ if (state->sync_thread == NULL) {
-+ vchiq_loud_error_header();
-+ vchiq_loud_error("couldn't create thread %s", threadname);
-+ vchiq_loud_error_footer();
-+ return VCHIQ_ERROR;
-+ }
-+ set_user_nice(state->sync_thread, -20);
-+ wake_up_process(state->sync_thread);
-+
-+ BUG_ON(state->id >= VCHIQ_MAX_STATES);
-+ vchiq_states[state->id] = state;
-+
-+ /* Indicate readiness to the other side */
-+ local->initialised = 1;
-+
-+ return status;
-+}
-+
-+/* Called from application thread when a client or server service is created. */
-+VCHIQ_SERVICE_T *
-+vchiq_add_service_internal(VCHIQ_STATE_T *state,
-+ const VCHIQ_SERVICE_PARAMS_T *params, int srvstate,
-+ VCHIQ_INSTANCE_T instance, VCHIQ_USERDATA_TERM_T userdata_term)
-+{
-+ VCHIQ_SERVICE_T *service;
-+
-+ service = kmalloc(sizeof(VCHIQ_SERVICE_T), GFP_KERNEL);
-+ if (service) {
-+ service->base.fourcc = params->fourcc;
-+ service->base.callback = params->callback;
-+ service->base.userdata = params->userdata;
-+ service->handle = VCHIQ_SERVICE_HANDLE_INVALID;
-+ service->ref_count = 1;
-+ service->srvstate = VCHIQ_SRVSTATE_FREE;
-+ service->userdata_term = userdata_term;
-+ service->localport = VCHIQ_PORT_FREE;
-+ service->remoteport = VCHIQ_PORT_FREE;
-+
-+ service->public_fourcc = (srvstate == VCHIQ_SRVSTATE_OPENING) ?
-+ VCHIQ_FOURCC_INVALID : params->fourcc;
-+ service->client_id = 0;
-+ service->auto_close = 1;
-+ service->sync = 0;
-+ service->closing = 0;
-+ atomic_set(&service->poll_flags, 0);
-+ service->version = params->version;
-+ service->version_min = params->version_min;
-+ service->state = state;
-+ service->instance = instance;
-+ service->service_use_count = 0;
-+ init_bulk_queue(&service->bulk_tx);
-+ init_bulk_queue(&service->bulk_rx);
-+ sema_init(&service->remove_event, 0);
-+ sema_init(&service->bulk_remove_event, 0);
-+ mutex_init(&service->bulk_mutex);
-+ memset(&service->stats, 0, sizeof(service->stats));
-+ } else {
-+ vchiq_log_error(vchiq_core_log_level,
-+ "Out of memory");
-+ }
-+
-+ if (service) {
-+ VCHIQ_SERVICE_T **pservice = NULL;
-+ int i;
-+
-+ /* Although it is perfectly possible to use service_spinlock
-+ ** to protect the creation of services, it is overkill as it
-+ ** disables interrupts while the array is searched.
-+ ** The only danger is of another thread trying to create a
-+ ** service - service deletion is safe.
-+ ** Therefore it is preferable to use state->mutex which,
-+ ** although slower to claim, doesn't block interrupts while
-+ ** it is held.
-+ */
-+
-+ mutex_lock(&state->mutex);
-+
-+ /* Prepare to use a previously unused service */
-+ if (state->unused_service < VCHIQ_MAX_SERVICES)
-+ pservice = &state->services[state->unused_service];
-+
-+ if (srvstate == VCHIQ_SRVSTATE_OPENING) {
-+ for (i = 0; i < state->unused_service; i++) {
-+ VCHIQ_SERVICE_T *srv = state->services[i];
-+ if (!srv) {
-+ pservice = &state->services[i];
-+ break;
-+ }
-+ }
-+ } else {
-+ for (i = (state->unused_service - 1); i >= 0; i--) {
-+ VCHIQ_SERVICE_T *srv = state->services[i];
-+ if (!srv)
-+ pservice = &state->services[i];
-+ else if ((srv->public_fourcc == params->fourcc)
-+ && ((srv->instance != instance) ||
-+ (srv->base.callback !=
-+ params->callback))) {
-+ /* There is another server using this
-+ ** fourcc which doesn't match. */
-+ pservice = NULL;
-+ break;
-+ }
-+ }
-+ }
-+
-+ if (pservice) {
-+ service->localport = (pservice - state->services);
-+ if (!handle_seq)
-+ handle_seq = VCHIQ_MAX_STATES *
-+ VCHIQ_MAX_SERVICES;
-+ service->handle = handle_seq |
-+ (state->id * VCHIQ_MAX_SERVICES) |
-+ service->localport;
-+ handle_seq += VCHIQ_MAX_STATES * VCHIQ_MAX_SERVICES;
-+ *pservice = service;
-+ if (pservice == &state->services[state->unused_service])
-+ state->unused_service++;
-+ }
-+
-+ mutex_unlock(&state->mutex);
-+
-+ if (!pservice) {
-+ kfree(service);
-+ service = NULL;
-+ }
-+ }
-+
-+ if (service) {
-+ VCHIQ_SERVICE_QUOTA_T *service_quota =
-+ &state->service_quotas[service->localport];
-+ service_quota->slot_quota = state->default_slot_quota;
-+ service_quota->message_quota = state->default_message_quota;
-+ if (service_quota->slot_use_count == 0)
-+ service_quota->previous_tx_index =
-+ SLOT_QUEUE_INDEX_FROM_POS(state->local_tx_pos)
-+ - 1;
-+
-+ /* Bring this service online */
-+ vchiq_set_service_state(service, srvstate);
-+
-+ vchiq_log_info(vchiq_core_msg_log_level,
-+ "%s Service %c%c%c%c SrcPort:%d",
-+ (srvstate == VCHIQ_SRVSTATE_OPENING)
-+ ? "Open" : "Add",
-+ VCHIQ_FOURCC_AS_4CHARS(params->fourcc),
-+ service->localport);
-+ }
-+
-+ /* Don't unlock the service - leave it with a ref_count of 1. */
-+
-+ return service;
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_open_service_internal(VCHIQ_SERVICE_T *service, int client_id)
-+{
-+ struct vchiq_open_payload payload = {
-+ service->base.fourcc,
-+ client_id,
-+ service->version,
-+ service->version_min
-+ };
-+ VCHIQ_ELEMENT_T body = { &payload, sizeof(payload) };
-+ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
-+
-+ service->client_id = client_id;
-+ vchiq_use_service_internal(service);
-+ status = queue_message(service->state, NULL,
-+ VCHIQ_MAKE_MSG(VCHIQ_MSG_OPEN, service->localport, 0),
-+ &body, 1, sizeof(payload), 1);
-+ if (status == VCHIQ_SUCCESS) {
-+ if (down_interruptible(&service->remove_event) != 0) {
-+ status = VCHIQ_RETRY;
-+ vchiq_release_service_internal(service);
-+ } else if ((service->srvstate != VCHIQ_SRVSTATE_OPEN) &&
-+ (service->srvstate != VCHIQ_SRVSTATE_OPENSYNC)) {
-+ if (service->srvstate != VCHIQ_SRVSTATE_CLOSEWAIT)
-+ vchiq_log_error(vchiq_core_log_level,
-+ "%d: osi - srvstate = %s (ref %d)",
-+ service->state->id,
-+ srvstate_names[service->srvstate],
-+ service->ref_count);
-+ status = VCHIQ_ERROR;
-+ VCHIQ_SERVICE_STATS_INC(service, error_count);
-+ vchiq_release_service_internal(service);
-+ }
-+ }
-+ return status;
-+}
-+
-+static void
-+release_service_messages(VCHIQ_SERVICE_T *service)
-+{
-+ VCHIQ_STATE_T *state = service->state;
-+ int slot_last = state->remote->slot_last;
-+ int i;
-+
-+ /* Release any claimed messages */
-+ for (i = state->remote->slot_first; i <= slot_last; i++) {
-+ VCHIQ_SLOT_INFO_T *slot_info =
-+ SLOT_INFO_FROM_INDEX(state, i);
-+ if (slot_info->release_count != slot_info->use_count) {
-+ char *data =
-+ (char *)SLOT_DATA_FROM_INDEX(state, i);
-+ unsigned int pos, end;
-+
-+ end = VCHIQ_SLOT_SIZE;
-+ if (data == state->rx_data)
-+ /* This buffer is still being read from - stop
-+ ** at the current read position */
-+ end = state->rx_pos & VCHIQ_SLOT_MASK;
-+
-+ pos = 0;
-+
-+ while (pos < end) {
-+ VCHIQ_HEADER_T *header =
-+ (VCHIQ_HEADER_T *)(data + pos);
-+ int msgid = header->msgid;
-+ int port = VCHIQ_MSG_DSTPORT(msgid);
-+ if ((port == service->localport) &&
-+ (msgid & VCHIQ_MSGID_CLAIMED)) {
-+ vchiq_log_info(vchiq_core_log_level,
-+ " fsi - hdr %x",
-+ (unsigned int)header);
-+ release_slot(state, slot_info, header,
-+ NULL);
-+ }
-+ pos += calc_stride(header->size);
-+ if (pos > VCHIQ_SLOT_SIZE) {
-+ vchiq_log_error(vchiq_core_log_level,
-+ "fsi - pos %x: header %x, "
-+ "msgid %x, header->msgid %x, "
-+ "header->size %x",
-+ pos, (unsigned int)header,
-+ msgid, header->msgid,
-+ header->size);
-+ WARN(1, "invalid slot position\n");
-+ }
-+ }
-+ }
-+ }
-+}
-+
-+static int
-+do_abort_bulks(VCHIQ_SERVICE_T *service)
-+{
-+ VCHIQ_STATUS_T status;
-+
-+ /* Abort any outstanding bulk transfers */
-+ if (mutex_lock_interruptible(&service->bulk_mutex) != 0)
-+ return 0;
-+ abort_outstanding_bulks(service, &service->bulk_tx);
-+ abort_outstanding_bulks(service, &service->bulk_rx);
-+ mutex_unlock(&service->bulk_mutex);
-+
-+ status = notify_bulks(service, &service->bulk_tx, 0/*!retry_poll*/);
-+ if (status == VCHIQ_SUCCESS)
-+ status = notify_bulks(service, &service->bulk_rx,
-+ 0/*!retry_poll*/);
-+ return (status == VCHIQ_SUCCESS);
-+}
-+
-+static VCHIQ_STATUS_T
-+close_service_complete(VCHIQ_SERVICE_T *service, int failstate)
-+{
-+ VCHIQ_STATUS_T status;
-+ int is_server = (service->public_fourcc != VCHIQ_FOURCC_INVALID);
-+ int newstate;
-+
-+ switch (service->srvstate) {
-+ case VCHIQ_SRVSTATE_OPEN:
-+ case VCHIQ_SRVSTATE_CLOSESENT:
-+ case VCHIQ_SRVSTATE_CLOSERECVD:
-+ if (is_server) {
-+ if (service->auto_close) {
-+ service->client_id = 0;
-+ service->remoteport = VCHIQ_PORT_FREE;
-+ newstate = VCHIQ_SRVSTATE_LISTENING;
-+ } else
-+ newstate = VCHIQ_SRVSTATE_CLOSEWAIT;
-+ } else
-+ newstate = VCHIQ_SRVSTATE_CLOSED;
-+ vchiq_set_service_state(service, newstate);
-+ break;
-+ case VCHIQ_SRVSTATE_LISTENING:
-+ break;
-+ default:
-+ vchiq_log_error(vchiq_core_log_level,
-+ "close_service_complete(%x) called in state %s",
-+ service->handle, srvstate_names[service->srvstate]);
-+ WARN(1, "close_service_complete in unexpected state\n");
-+ return VCHIQ_ERROR;
-+ }
-+
-+ status = make_service_callback(service,
-+ VCHIQ_SERVICE_CLOSED, NULL, NULL);
-+
-+ if (status != VCHIQ_RETRY) {
-+ int uc = service->service_use_count;
-+ int i;
-+ /* Complete the close process */
-+ for (i = 0; i < uc; i++)
-+ /* cater for cases where close is forced and the
-+ ** client may not close all it's handles */
-+ vchiq_release_service_internal(service);
-+
-+ service->client_id = 0;
-+ service->remoteport = VCHIQ_PORT_FREE;
-+
-+ if (service->srvstate == VCHIQ_SRVSTATE_CLOSED)
-+ vchiq_free_service_internal(service);
-+ else if (service->srvstate != VCHIQ_SRVSTATE_CLOSEWAIT) {
-+ if (is_server)
-+ service->closing = 0;
-+
-+ up(&service->remove_event);
-+ }
-+ } else
-+ vchiq_set_service_state(service, failstate);
-+
-+ return status;
-+}
-+
-+/* Called by the slot handler */
-+VCHIQ_STATUS_T
-+vchiq_close_service_internal(VCHIQ_SERVICE_T *service, int close_recvd)
-+{
-+ VCHIQ_STATE_T *state = service->state;
-+ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
-+ int is_server = (service->public_fourcc != VCHIQ_FOURCC_INVALID);
-+
-+ vchiq_log_info(vchiq_core_log_level, "%d: csi:%d,%d (%s)",
-+ service->state->id, service->localport, close_recvd,
-+ srvstate_names[service->srvstate]);
-+
-+ switch (service->srvstate) {
-+ case VCHIQ_SRVSTATE_CLOSED:
-+ case VCHIQ_SRVSTATE_HIDDEN:
-+ case VCHIQ_SRVSTATE_LISTENING:
-+ case VCHIQ_SRVSTATE_CLOSEWAIT:
-+ if (close_recvd)
-+ vchiq_log_error(vchiq_core_log_level,
-+ "vchiq_close_service_internal(1) called "
-+ "in state %s",
-+ srvstate_names[service->srvstate]);
-+ else if (is_server) {
-+ if (service->srvstate == VCHIQ_SRVSTATE_LISTENING) {
-+ status = VCHIQ_ERROR;
-+ } else {
-+ service->client_id = 0;
-+ service->remoteport = VCHIQ_PORT_FREE;
-+ if (service->srvstate ==
-+ VCHIQ_SRVSTATE_CLOSEWAIT)
-+ vchiq_set_service_state(service,
-+ VCHIQ_SRVSTATE_LISTENING);
-+ }
-+ up(&service->remove_event);
-+ } else
-+ vchiq_free_service_internal(service);
-+ break;
-+ case VCHIQ_SRVSTATE_OPENING:
-+ if (close_recvd) {
-+ /* The open was rejected - tell the user */
-+ vchiq_set_service_state(service,
-+ VCHIQ_SRVSTATE_CLOSEWAIT);
-+ up(&service->remove_event);
-+ } else {
-+ /* Shutdown mid-open - let the other side know */
-+ status = queue_message(state, service,
-+ VCHIQ_MAKE_MSG
-+ (VCHIQ_MSG_CLOSE,
-+ service->localport,
-+ VCHIQ_MSG_DSTPORT(service->remoteport)),
-+ NULL, 0, 0, 0);
-+ }
-+ break;
-+
-+ case VCHIQ_SRVSTATE_OPENSYNC:
-+ mutex_lock(&state->sync_mutex);
-+ /* Drop through */
-+
-+ case VCHIQ_SRVSTATE_OPEN:
-+ if (state->is_master || close_recvd) {
-+ if (!do_abort_bulks(service))
-+ status = VCHIQ_RETRY;
-+ }
-+
-+ release_service_messages(service);
-+
-+ if (status == VCHIQ_SUCCESS)
-+ status = queue_message(state, service,
-+ VCHIQ_MAKE_MSG
-+ (VCHIQ_MSG_CLOSE,
-+ service->localport,
-+ VCHIQ_MSG_DSTPORT(service->remoteport)),
-+ NULL, 0, 0, 0);
-+
-+ if (status == VCHIQ_SUCCESS) {
-+ if (!close_recvd)
-+ break;
-+ } else if (service->srvstate == VCHIQ_SRVSTATE_OPENSYNC) {
-+ mutex_unlock(&state->sync_mutex);
-+ break;
-+ } else
-+ break;
-+
-+ status = close_service_complete(service,
-+ VCHIQ_SRVSTATE_CLOSERECVD);
-+ break;
-+
-+ case VCHIQ_SRVSTATE_CLOSESENT:
-+ if (!close_recvd)
-+ /* This happens when a process is killed mid-close */
-+ break;
-+
-+ if (!state->is_master) {
-+ if (!do_abort_bulks(service)) {
-+ status = VCHIQ_RETRY;
-+ break;
-+ }
-+ }
-+
-+ if (status == VCHIQ_SUCCESS)
-+ status = close_service_complete(service,
-+ VCHIQ_SRVSTATE_CLOSERECVD);
-+ break;
-+
-+ case VCHIQ_SRVSTATE_CLOSERECVD:
-+ if (!close_recvd && is_server)
-+ /* Force into LISTENING mode */
-+ vchiq_set_service_state(service,
-+ VCHIQ_SRVSTATE_LISTENING);
-+ status = close_service_complete(service,
-+ VCHIQ_SRVSTATE_CLOSERECVD);
-+ break;
-+
-+ default:
-+ vchiq_log_error(vchiq_core_log_level,
-+ "vchiq_close_service_internal(%d) called in state %s",
-+ close_recvd, srvstate_names[service->srvstate]);
-+ break;
-+ }
-+
-+ return status;
-+}
-+
-+/* Called from the application process upon process death */
-+void
-+vchiq_terminate_service_internal(VCHIQ_SERVICE_T *service)
-+{
-+ VCHIQ_STATE_T *state = service->state;
-+
-+ vchiq_log_info(vchiq_core_log_level, "%d: tsi - (%d<->%d)",
-+ state->id, service->localport, service->remoteport);
-+
-+ mark_service_closing(service);
-+
-+ /* Mark the service for removal by the slot handler */
-+ request_poll(state, service, VCHIQ_POLL_REMOVE);
-+}
-+
-+/* Called from the slot handler */
-+void
-+vchiq_free_service_internal(VCHIQ_SERVICE_T *service)
-+{
-+ VCHIQ_STATE_T *state = service->state;
-+
-+ vchiq_log_info(vchiq_core_log_level, "%d: fsi - (%d)",
-+ state->id, service->localport);
-+
-+ switch (service->srvstate) {
-+ case VCHIQ_SRVSTATE_OPENING:
-+ case VCHIQ_SRVSTATE_CLOSED:
-+ case VCHIQ_SRVSTATE_HIDDEN:
-+ case VCHIQ_SRVSTATE_LISTENING:
-+ case VCHIQ_SRVSTATE_CLOSEWAIT:
-+ break;
-+ default:
-+ vchiq_log_error(vchiq_core_log_level,
-+ "%d: fsi - (%d) in state %s",
-+ state->id, service->localport,
-+ srvstate_names[service->srvstate]);
-+ return;
-+ }
-+
-+ vchiq_set_service_state(service, VCHIQ_SRVSTATE_FREE);
-+
-+ up(&service->remove_event);
-+
-+ /* Release the initial lock */
-+ unlock_service(service);
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_connect_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance)
-+{
-+ VCHIQ_SERVICE_T *service;
-+ int i;
-+
-+ /* Find all services registered to this client and enable them. */
-+ i = 0;
-+ while ((service = next_service_by_instance(state, instance,
-+ &i)) != NULL) {
-+ if (service->srvstate == VCHIQ_SRVSTATE_HIDDEN)
-+ vchiq_set_service_state(service,
-+ VCHIQ_SRVSTATE_LISTENING);
-+ unlock_service(service);
-+ }
-+
-+ if (state->conn_state == VCHIQ_CONNSTATE_DISCONNECTED) {
-+ if (queue_message(state, NULL,
-+ VCHIQ_MAKE_MSG(VCHIQ_MSG_CONNECT, 0, 0), NULL, 0,
-+ 0, 1) == VCHIQ_RETRY)
-+ return VCHIQ_RETRY;
-+
-+ vchiq_set_conn_state(state, VCHIQ_CONNSTATE_CONNECTING);
-+ }
-+
-+ if (state->conn_state == VCHIQ_CONNSTATE_CONNECTING) {
-+ if (down_interruptible(&state->connect) != 0)
-+ return VCHIQ_RETRY;
-+
-+ vchiq_set_conn_state(state, VCHIQ_CONNSTATE_CONNECTED);
-+ up(&state->connect);
-+ }
-+
-+ return VCHIQ_SUCCESS;
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_shutdown_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance)
-+{
-+ VCHIQ_SERVICE_T *service;
-+ int i;
-+
-+ /* Find all services registered to this client and enable them. */
-+ i = 0;
-+ while ((service = next_service_by_instance(state, instance,
-+ &i)) != NULL) {
-+ (void)vchiq_remove_service(service->handle);
-+ unlock_service(service);
-+ }
-+
-+ return VCHIQ_SUCCESS;
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_pause_internal(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
-+
-+ switch (state->conn_state) {
-+ case VCHIQ_CONNSTATE_CONNECTED:
-+ /* Request a pause */
-+ vchiq_set_conn_state(state, VCHIQ_CONNSTATE_PAUSING);
-+ request_poll(state, NULL, 0);
-+ break;
-+ default:
-+ vchiq_log_error(vchiq_core_log_level,
-+ "vchiq_pause_internal in state %s\n",
-+ conn_state_names[state->conn_state]);
-+ status = VCHIQ_ERROR;
-+ VCHIQ_STATS_INC(state, error_count);
-+ break;
-+ }
-+
-+ return status;
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_resume_internal(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
-+
-+ if (state->conn_state == VCHIQ_CONNSTATE_PAUSED) {
-+ vchiq_set_conn_state(state, VCHIQ_CONNSTATE_RESUMING);
-+ request_poll(state, NULL, 0);
-+ } else {
-+ status = VCHIQ_ERROR;
-+ VCHIQ_STATS_INC(state, error_count);
-+ }
-+
-+ return status;
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_close_service(VCHIQ_SERVICE_HANDLE_T handle)
-+{
-+ /* Unregister the service */
-+ VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
-+ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
-+
-+ if (!service)
-+ return VCHIQ_ERROR;
-+
-+ vchiq_log_info(vchiq_core_log_level,
-+ "%d: close_service:%d",
-+ service->state->id, service->localport);
-+
-+ if ((service->srvstate == VCHIQ_SRVSTATE_FREE) ||
-+ (service->srvstate == VCHIQ_SRVSTATE_LISTENING) ||
-+ (service->srvstate == VCHIQ_SRVSTATE_HIDDEN)) {
-+ unlock_service(service);
-+ return VCHIQ_ERROR;
-+ }
-+
-+ mark_service_closing(service);
-+
-+ if (current == service->state->slot_handler_thread) {
-+ status = vchiq_close_service_internal(service,
-+ 0/*!close_recvd*/);
-+ BUG_ON(status == VCHIQ_RETRY);
-+ } else {
-+ /* Mark the service for termination by the slot handler */
-+ request_poll(service->state, service, VCHIQ_POLL_TERMINATE);
-+ }
-+
-+ while (1) {
-+ if (down_interruptible(&service->remove_event) != 0) {
-+ status = VCHIQ_RETRY;
-+ break;
-+ }
-+
-+ if ((service->srvstate == VCHIQ_SRVSTATE_FREE) ||
-+ (service->srvstate == VCHIQ_SRVSTATE_LISTENING) ||
-+ (service->srvstate == VCHIQ_SRVSTATE_OPEN))
-+ break;
-+
-+ vchiq_log_warning(vchiq_core_log_level,
-+ "%d: close_service:%d - waiting in state %s",
-+ service->state->id, service->localport,
-+ srvstate_names[service->srvstate]);
-+ }
-+
-+ if ((status == VCHIQ_SUCCESS) &&
-+ (service->srvstate != VCHIQ_SRVSTATE_FREE) &&
-+ (service->srvstate != VCHIQ_SRVSTATE_LISTENING))
-+ status = VCHIQ_ERROR;
-+
-+ unlock_service(service);
-+
-+ return status;
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_remove_service(VCHIQ_SERVICE_HANDLE_T handle)
-+{
-+ /* Unregister the service */
-+ VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
-+ VCHIQ_STATUS_T status = VCHIQ_SUCCESS;
-+
-+ if (!service)
-+ return VCHIQ_ERROR;
-+
-+ vchiq_log_info(vchiq_core_log_level,
-+ "%d: remove_service:%d",
-+ service->state->id, service->localport);
-+
-+ if (service->srvstate == VCHIQ_SRVSTATE_FREE) {
-+ unlock_service(service);
-+ return VCHIQ_ERROR;
-+ }
-+
-+ mark_service_closing(service);
-+
-+ if ((service->srvstate == VCHIQ_SRVSTATE_HIDDEN) ||
-+ (current == service->state->slot_handler_thread)) {
-+ /* Make it look like a client, because it must be removed and
-+ not left in the LISTENING state. */
-+ service->public_fourcc = VCHIQ_FOURCC_INVALID;
-+
-+ status = vchiq_close_service_internal(service,
-+ 0/*!close_recvd*/);
-+ BUG_ON(status == VCHIQ_RETRY);
-+ } else {
-+ /* Mark the service for removal by the slot handler */
-+ request_poll(service->state, service, VCHIQ_POLL_REMOVE);
-+ }
-+ while (1) {
-+ if (down_interruptible(&service->remove_event) != 0) {
-+ status = VCHIQ_RETRY;
-+ break;
-+ }
-+
-+ if ((service->srvstate == VCHIQ_SRVSTATE_FREE) ||
-+ (service->srvstate == VCHIQ_SRVSTATE_OPEN))
-+ break;
-+
-+ vchiq_log_warning(vchiq_core_log_level,
-+ "%d: remove_service:%d - waiting in state %s",
-+ service->state->id, service->localport,
-+ srvstate_names[service->srvstate]);
-+ }
-+
-+ if ((status == VCHIQ_SUCCESS) &&
-+ (service->srvstate != VCHIQ_SRVSTATE_FREE))
-+ status = VCHIQ_ERROR;
-+
-+ unlock_service(service);
-+
-+ return status;
-+}
-+
-+
-+/* This function may be called by kernel threads or user threads.
-+ * User threads may receive VCHIQ_RETRY to indicate that a signal has been
-+ * received and the call should be retried after being returned to user
-+ * context.
-+ * When called in blocking mode, the userdata field points to a bulk_waiter
-+ * structure.
-+ */
-+VCHIQ_STATUS_T
-+vchiq_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle,
-+ VCHI_MEM_HANDLE_T memhandle, void *offset, int size, void *userdata,
-+ VCHIQ_BULK_MODE_T mode, VCHIQ_BULK_DIR_T dir)
-+{
-+ VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
-+ VCHIQ_BULK_QUEUE_T *queue;
-+ VCHIQ_BULK_T *bulk;
-+ VCHIQ_STATE_T *state;
-+ struct bulk_waiter *bulk_waiter = NULL;
-+ const char dir_char = (dir == VCHIQ_BULK_TRANSMIT) ? 't' : 'r';
-+ const int dir_msgtype = (dir == VCHIQ_BULK_TRANSMIT) ?
-+ VCHIQ_MSG_BULK_TX : VCHIQ_MSG_BULK_RX;
-+ VCHIQ_STATUS_T status = VCHIQ_ERROR;
-+
-+ if (!service ||
-+ (service->srvstate != VCHIQ_SRVSTATE_OPEN) ||
-+ ((memhandle == VCHI_MEM_HANDLE_INVALID) && (offset == NULL)) ||
-+ (vchiq_check_service(service) != VCHIQ_SUCCESS))
-+ goto error_exit;
-+
-+ switch (mode) {
-+ case VCHIQ_BULK_MODE_NOCALLBACK:
-+ case VCHIQ_BULK_MODE_CALLBACK:
-+ break;
-+ case VCHIQ_BULK_MODE_BLOCKING:
-+ bulk_waiter = (struct bulk_waiter *)userdata;
-+ sema_init(&bulk_waiter->event, 0);
-+ bulk_waiter->actual = 0;
-+ bulk_waiter->bulk = NULL;
-+ break;
-+ case VCHIQ_BULK_MODE_WAITING:
-+ bulk_waiter = (struct bulk_waiter *)userdata;
-+ bulk = bulk_waiter->bulk;
-+ goto waiting;
-+ default:
-+ goto error_exit;
-+ }
-+
-+ state = service->state;
-+
-+ queue = (dir == VCHIQ_BULK_TRANSMIT) ?
-+ &service->bulk_tx : &service->bulk_rx;
-+
-+ if (mutex_lock_interruptible(&service->bulk_mutex) != 0) {
-+ status = VCHIQ_RETRY;
-+ goto error_exit;
-+ }
-+
-+ if (queue->local_insert == queue->remove + VCHIQ_NUM_SERVICE_BULKS) {
-+ VCHIQ_SERVICE_STATS_INC(service, bulk_stalls);
-+ do {
-+ mutex_unlock(&service->bulk_mutex);
-+ if (down_interruptible(&service->bulk_remove_event)
-+ != 0) {
-+ status = VCHIQ_RETRY;
-+ goto error_exit;
-+ }
-+ if (mutex_lock_interruptible(&service->bulk_mutex)
-+ != 0) {
-+ status = VCHIQ_RETRY;
-+ goto error_exit;
-+ }
-+ } while (queue->local_insert == queue->remove +
-+ VCHIQ_NUM_SERVICE_BULKS);
-+ }
-+
-+ bulk = &queue->bulks[BULK_INDEX(queue->local_insert)];
-+
-+ bulk->mode = mode;
-+ bulk->dir = dir;
-+ bulk->userdata = userdata;
-+ bulk->size = size;
-+ bulk->actual = VCHIQ_BULK_ACTUAL_ABORTED;
-+
-+ if (vchiq_prepare_bulk_data(bulk, memhandle, offset, size, dir) !=
-+ VCHIQ_SUCCESS)
-+ goto unlock_error_exit;
-+
-+ wmb();
-+
-+ vchiq_log_info(vchiq_core_log_level,
-+ "%d: bt (%d->%d) %cx %x@%x %x",
-+ state->id,
-+ service->localport, service->remoteport, dir_char,
-+ size, (unsigned int)bulk->data, (unsigned int)userdata);
-+
-+ if (state->is_master) {
-+ queue->local_insert++;
-+ if (resolve_bulks(service, queue))
-+ request_poll(state, service,
-+ (dir == VCHIQ_BULK_TRANSMIT) ?
-+ VCHIQ_POLL_TXNOTIFY : VCHIQ_POLL_RXNOTIFY);
-+ } else {
-+ int payload[2] = { (int)bulk->data, bulk->size };
-+ VCHIQ_ELEMENT_T element = { payload, sizeof(payload) };
-+
-+ status = queue_message(state, NULL,
-+ VCHIQ_MAKE_MSG(dir_msgtype,
-+ service->localport, service->remoteport),
-+ &element, 1, sizeof(payload), 1);
-+ if (status != VCHIQ_SUCCESS) {
-+ vchiq_complete_bulk(bulk);
-+ goto unlock_error_exit;
-+ }
-+ queue->local_insert++;
-+ }
-+
-+ mutex_unlock(&service->bulk_mutex);
-+
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%d: bt:%d %cx li=%x ri=%x p=%x",
-+ state->id,
-+ service->localport, dir_char,
-+ queue->local_insert, queue->remote_insert, queue->process);
-+
-+waiting:
-+ unlock_service(service);
-+
-+ status = VCHIQ_SUCCESS;
-+
-+ if (bulk_waiter) {
-+ bulk_waiter->bulk = bulk;
-+ if (down_interruptible(&bulk_waiter->event) != 0)
-+ status = VCHIQ_RETRY;
-+ else if (bulk_waiter->actual == VCHIQ_BULK_ACTUAL_ABORTED)
-+ status = VCHIQ_ERROR;
-+ }
-+
-+ return status;
-+
-+unlock_error_exit:
-+ mutex_unlock(&service->bulk_mutex);
-+
-+error_exit:
-+ if (service)
-+ unlock_service(service);
-+ return status;
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_queue_message(VCHIQ_SERVICE_HANDLE_T handle,
-+ const VCHIQ_ELEMENT_T *elements, unsigned int count)
-+{
-+ VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
-+ VCHIQ_STATUS_T status = VCHIQ_ERROR;
-+
-+ unsigned int size = 0;
-+ unsigned int i;
-+
-+ if (!service ||
-+ (vchiq_check_service(service) != VCHIQ_SUCCESS))
-+ goto error_exit;
-+
-+ for (i = 0; i < (unsigned int)count; i++) {
-+ if (elements[i].size) {
-+ if (elements[i].data == NULL) {
-+ VCHIQ_SERVICE_STATS_INC(service, error_count);
-+ goto error_exit;
-+ }
-+ size += elements[i].size;
-+ }
-+ }
-+
-+ if (size > VCHIQ_MAX_MSG_SIZE) {
-+ VCHIQ_SERVICE_STATS_INC(service, error_count);
-+ goto error_exit;
-+ }
-+
-+ switch (service->srvstate) {
-+ case VCHIQ_SRVSTATE_OPEN:
-+ status = queue_message(service->state, service,
-+ VCHIQ_MAKE_MSG(VCHIQ_MSG_DATA,
-+ service->localport,
-+ service->remoteport),
-+ elements, count, size, 1);
-+ break;
-+ case VCHIQ_SRVSTATE_OPENSYNC:
-+ status = queue_message_sync(service->state, service,
-+ VCHIQ_MAKE_MSG(VCHIQ_MSG_DATA,
-+ service->localport,
-+ service->remoteport),
-+ elements, count, size, 1);
-+ break;
-+ default:
-+ status = VCHIQ_ERROR;
-+ break;
-+ }
-+
-+error_exit:
-+ if (service)
-+ unlock_service(service);
-+
-+ return status;
-+}
-+
-+void
-+vchiq_release_message(VCHIQ_SERVICE_HANDLE_T handle, VCHIQ_HEADER_T *header)
-+{
-+ VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
-+ VCHIQ_SHARED_STATE_T *remote;
-+ VCHIQ_STATE_T *state;
-+ int slot_index;
-+
-+ if (!service)
-+ return;
-+
-+ state = service->state;
-+ remote = state->remote;
-+
-+ slot_index = SLOT_INDEX_FROM_DATA(state, (void *)header);
-+
-+ if ((slot_index >= remote->slot_first) &&
-+ (slot_index <= remote->slot_last)) {
-+ int msgid = header->msgid;
-+ if (msgid & VCHIQ_MSGID_CLAIMED) {
-+ VCHIQ_SLOT_INFO_T *slot_info =
-+ SLOT_INFO_FROM_INDEX(state, slot_index);
-+
-+ release_slot(state, slot_info, header, service);
-+ }
-+ } else if (slot_index == remote->slot_sync)
-+ release_message_sync(state, header);
-+
-+ unlock_service(service);
-+}
-+
-+static void
-+release_message_sync(VCHIQ_STATE_T *state, VCHIQ_HEADER_T *header)
-+{
-+ header->msgid = VCHIQ_MSGID_PADDING;
-+ wmb();
-+ remote_event_signal(&state->remote->sync_release);
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_get_peer_version(VCHIQ_SERVICE_HANDLE_T handle, short *peer_version)
-+{
-+ VCHIQ_STATUS_T status = VCHIQ_ERROR;
-+ VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
-+
-+ if (!service ||
-+ (vchiq_check_service(service) != VCHIQ_SUCCESS) ||
-+ !peer_version)
-+ goto exit;
-+ *peer_version = service->peer_version;
-+ status = VCHIQ_SUCCESS;
-+
-+exit:
-+ if (service)
-+ unlock_service(service);
-+ return status;
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_get_config(VCHIQ_INSTANCE_T instance,
-+ int config_size, VCHIQ_CONFIG_T *pconfig)
-+{
-+ VCHIQ_CONFIG_T config;
-+
-+ (void)instance;
-+
-+ config.max_msg_size = VCHIQ_MAX_MSG_SIZE;
-+ config.bulk_threshold = VCHIQ_MAX_MSG_SIZE;
-+ config.max_outstanding_bulks = VCHIQ_NUM_SERVICE_BULKS;
-+ config.max_services = VCHIQ_MAX_SERVICES;
-+ config.version = VCHIQ_VERSION;
-+ config.version_min = VCHIQ_VERSION_MIN;
-+
-+ if (config_size > sizeof(VCHIQ_CONFIG_T))
-+ return VCHIQ_ERROR;
-+
-+ memcpy(pconfig, &config,
-+ min(config_size, (int)(sizeof(VCHIQ_CONFIG_T))));
-+
-+ return VCHIQ_SUCCESS;
-+}
-+
-+VCHIQ_STATUS_T
-+vchiq_set_service_option(VCHIQ_SERVICE_HANDLE_T handle,
-+ VCHIQ_SERVICE_OPTION_T option, int value)
-+{
-+ VCHIQ_SERVICE_T *service = find_service_by_handle(handle);
-+ VCHIQ_STATUS_T status = VCHIQ_ERROR;
-+
-+ if (service) {
-+ switch (option) {
-+ case VCHIQ_SERVICE_OPTION_AUTOCLOSE:
-+ service->auto_close = value;
-+ status = VCHIQ_SUCCESS;
-+ break;
-+
-+ case VCHIQ_SERVICE_OPTION_SLOT_QUOTA: {
-+ VCHIQ_SERVICE_QUOTA_T *service_quota =
-+ &service->state->service_quotas[
-+ service->localport];
-+ if (value == 0)
-+ value = service->state->default_slot_quota;
-+ if ((value >= service_quota->slot_use_count) &&
-+ (value < (unsigned short)~0)) {
-+ service_quota->slot_quota = value;
-+ if ((value >= service_quota->slot_use_count) &&
-+ (service_quota->message_quota >=
-+ service_quota->message_use_count)) {
-+ /* Signal the service that it may have
-+ ** dropped below its quota */
-+ up(&service_quota->quota_event);
-+ }
-+ status = VCHIQ_SUCCESS;
-+ }
-+ } break;
-+
-+ case VCHIQ_SERVICE_OPTION_MESSAGE_QUOTA: {
-+ VCHIQ_SERVICE_QUOTA_T *service_quota =
-+ &service->state->service_quotas[
-+ service->localport];
-+ if (value == 0)
-+ value = service->state->default_message_quota;
-+ if ((value >= service_quota->message_use_count) &&
-+ (value < (unsigned short)~0)) {
-+ service_quota->message_quota = value;
-+ if ((value >=
-+ service_quota->message_use_count) &&
-+ (service_quota->slot_quota >=
-+ service_quota->slot_use_count))
-+ /* Signal the service that it may have
-+ ** dropped below its quota */
-+ up(&service_quota->quota_event);
-+ status = VCHIQ_SUCCESS;
-+ }
-+ } break;
-+
-+ case VCHIQ_SERVICE_OPTION_SYNCHRONOUS:
-+ if ((service->srvstate == VCHIQ_SRVSTATE_HIDDEN) ||
-+ (service->srvstate ==
-+ VCHIQ_SRVSTATE_LISTENING)) {
-+ service->sync = value;
-+ status = VCHIQ_SUCCESS;
-+ }
-+ break;
-+
-+ default:
-+ break;
-+ }
-+ unlock_service(service);
-+ }
-+
-+ return status;
-+}
-+
-+void
-+vchiq_dump_shared_state(void *dump_context, VCHIQ_STATE_T *state,
-+ VCHIQ_SHARED_STATE_T *shared, const char *label)
-+{
-+ static const char *const debug_names[] = {
-+ "<entries>",
-+ "SLOT_HANDLER_COUNT",
-+ "SLOT_HANDLER_LINE",
-+ "PARSE_LINE",
-+ "PARSE_HEADER",
-+ "PARSE_MSGID",
-+ "AWAIT_COMPLETION_LINE",
-+ "DEQUEUE_MESSAGE_LINE",
-+ "SERVICE_CALLBACK_LINE",
-+ "MSG_QUEUE_FULL_COUNT",
-+ "COMPLETION_QUEUE_FULL_COUNT"
-+ };
-+ int i;
-+
-+ char buf[80];
-+ int len;
-+ len = snprintf(buf, sizeof(buf),
-+ " %s: slots %d-%d tx_pos=%x recycle=%x",
-+ label, shared->slot_first, shared->slot_last,
-+ shared->tx_pos, shared->slot_queue_recycle);
-+ vchiq_dump(dump_context, buf, len + 1);
-+
-+ len = snprintf(buf, sizeof(buf),
-+ " Slots claimed:");
-+ vchiq_dump(dump_context, buf, len + 1);
-+
-+ for (i = shared->slot_first; i <= shared->slot_last; i++) {
-+ VCHIQ_SLOT_INFO_T slot_info = *SLOT_INFO_FROM_INDEX(state, i);
-+ if (slot_info.use_count != slot_info.release_count) {
-+ len = snprintf(buf, sizeof(buf),
-+ " %d: %d/%d", i, slot_info.use_count,
-+ slot_info.release_count);
-+ vchiq_dump(dump_context, buf, len + 1);
-+ }
-+ }
-+
-+ for (i = 1; i < shared->debug[DEBUG_ENTRIES]; i++) {
-+ len = snprintf(buf, sizeof(buf), " DEBUG: %s = %d(%x)",
-+ debug_names[i], shared->debug[i], shared->debug[i]);
-+ vchiq_dump(dump_context, buf, len + 1);
-+ }
-+}
-+
-+void
-+vchiq_dump_state(void *dump_context, VCHIQ_STATE_T *state)
-+{
-+ char buf[80];
-+ int len;
-+ int i;
-+
-+ len = snprintf(buf, sizeof(buf), "State %d: %s", state->id,
-+ conn_state_names[state->conn_state]);
-+ vchiq_dump(dump_context, buf, len + 1);
-+
-+ len = snprintf(buf, sizeof(buf),
-+ " tx_pos=%x(@%x), rx_pos=%x(@%x)",
-+ state->local->tx_pos,
-+ (uint32_t)state->tx_data +
-+ (state->local_tx_pos & VCHIQ_SLOT_MASK),
-+ state->rx_pos,
-+ (uint32_t)state->rx_data +
-+ (state->rx_pos & VCHIQ_SLOT_MASK));
-+ vchiq_dump(dump_context, buf, len + 1);
-+
-+ len = snprintf(buf, sizeof(buf),
-+ " Version: %d (min %d)",
-+ VCHIQ_VERSION, VCHIQ_VERSION_MIN);
-+ vchiq_dump(dump_context, buf, len + 1);
-+
-+ if (VCHIQ_ENABLE_STATS) {
-+ len = snprintf(buf, sizeof(buf),
-+ " Stats: ctrl_tx_count=%d, ctrl_rx_count=%d, "
-+ "error_count=%d",
-+ state->stats.ctrl_tx_count, state->stats.ctrl_rx_count,
-+ state->stats.error_count);
-+ vchiq_dump(dump_context, buf, len + 1);
-+ }
-+
-+ len = snprintf(buf, sizeof(buf),
-+ " Slots: %d available (%d data), %d recyclable, %d stalls "
-+ "(%d data)",
-+ ((state->slot_queue_available * VCHIQ_SLOT_SIZE) -
-+ state->local_tx_pos) / VCHIQ_SLOT_SIZE,
-+ state->data_quota - state->data_use_count,
-+ state->local->slot_queue_recycle - state->slot_queue_available,
-+ state->stats.slot_stalls, state->stats.data_stalls);
-+ vchiq_dump(dump_context, buf, len + 1);
-+
-+ vchiq_dump_platform_state(dump_context);
-+
-+ vchiq_dump_shared_state(dump_context, state, state->local, "Local");
-+ vchiq_dump_shared_state(dump_context, state, state->remote, "Remote");
-+
-+ vchiq_dump_platform_instances(dump_context);
-+
-+ for (i = 0; i < state->unused_service; i++) {
-+ VCHIQ_SERVICE_T *service = find_service_by_port(state, i);
-+
-+ if (service) {
-+ vchiq_dump_service_state(dump_context, service);
-+ unlock_service(service);
-+ }
-+ }
-+}
-+
-+void
-+vchiq_dump_service_state(void *dump_context, VCHIQ_SERVICE_T *service)
-+{
-+ char buf[80];
-+ int len;
-+
-+ len = snprintf(buf, sizeof(buf), "Service %d: %s (ref %u)",
-+ service->localport, srvstate_names[service->srvstate],
-+ service->ref_count - 1); /*Don't include the lock just taken*/
-+
-+ if (service->srvstate != VCHIQ_SRVSTATE_FREE) {
-+ char remoteport[30];
-+ VCHIQ_SERVICE_QUOTA_T *service_quota =
-+ &service->state->service_quotas[service->localport];
-+ int fourcc = service->base.fourcc;
-+ int tx_pending, rx_pending;
-+ if (service->remoteport != VCHIQ_PORT_FREE) {
-+ int len2 = snprintf(remoteport, sizeof(remoteport),
-+ "%d", service->remoteport);
-+ if (service->public_fourcc != VCHIQ_FOURCC_INVALID)
-+ snprintf(remoteport + len2,
-+ sizeof(remoteport) - len2,
-+ " (client %x)", service->client_id);
-+ } else
-+ strcpy(remoteport, "n/a");
-+
-+ len += snprintf(buf + len, sizeof(buf) - len,
-+ " '%c%c%c%c' remote %s (msg use %d/%d, slot use %d/%d)",
-+ VCHIQ_FOURCC_AS_4CHARS(fourcc),
-+ remoteport,
-+ service_quota->message_use_count,
-+ service_quota->message_quota,
-+ service_quota->slot_use_count,
-+ service_quota->slot_quota);
-+
-+ vchiq_dump(dump_context, buf, len + 1);
-+
-+ tx_pending = service->bulk_tx.local_insert -
-+ service->bulk_tx.remote_insert;
-+
-+ rx_pending = service->bulk_rx.local_insert -
-+ service->bulk_rx.remote_insert;
-+
-+ len = snprintf(buf, sizeof(buf),
-+ " Bulk: tx_pending=%d (size %d),"
-+ " rx_pending=%d (size %d)",
-+ tx_pending,
-+ tx_pending ? service->bulk_tx.bulks[
-+ BULK_INDEX(service->bulk_tx.remove)].size : 0,
-+ rx_pending,
-+ rx_pending ? service->bulk_rx.bulks[
-+ BULK_INDEX(service->bulk_rx.remove)].size : 0);
-+
-+ if (VCHIQ_ENABLE_STATS) {
-+ vchiq_dump(dump_context, buf, len + 1);
-+
-+ len = snprintf(buf, sizeof(buf),
-+ " Ctrl: tx_count=%d, tx_bytes=%llu, "
-+ "rx_count=%d, rx_bytes=%llu",
-+ service->stats.ctrl_tx_count,
-+ service->stats.ctrl_tx_bytes,
-+ service->stats.ctrl_rx_count,
-+ service->stats.ctrl_rx_bytes);
-+ vchiq_dump(dump_context, buf, len + 1);
-+
-+ len = snprintf(buf, sizeof(buf),
-+ " Bulk: tx_count=%d, tx_bytes=%llu, "
-+ "rx_count=%d, rx_bytes=%llu",
-+ service->stats.bulk_tx_count,
-+ service->stats.bulk_tx_bytes,
-+ service->stats.bulk_rx_count,
-+ service->stats.bulk_rx_bytes);
-+ vchiq_dump(dump_context, buf, len + 1);
-+
-+ len = snprintf(buf, sizeof(buf),
-+ " %d quota stalls, %d slot stalls, "
-+ "%d bulk stalls, %d aborted, %d errors",
-+ service->stats.quota_stalls,
-+ service->stats.slot_stalls,
-+ service->stats.bulk_stalls,
-+ service->stats.bulk_aborted_count,
-+ service->stats.error_count);
-+ }
-+ }
-+
-+ vchiq_dump(dump_context, buf, len + 1);
-+
-+ if (service->srvstate != VCHIQ_SRVSTATE_FREE)
-+ vchiq_dump_platform_service_state(dump_context, service);
-+}
-+
-+
-+void
-+vchiq_loud_error_header(void)
-+{
-+ vchiq_log_error(vchiq_core_log_level,
-+ "============================================================"
-+ "================");
-+ vchiq_log_error(vchiq_core_log_level,
-+ "============================================================"
-+ "================");
-+ vchiq_log_error(vchiq_core_log_level, "=====");
-+}
-+
-+void
-+vchiq_loud_error_footer(void)
-+{
-+ vchiq_log_error(vchiq_core_log_level, "=====");
-+ vchiq_log_error(vchiq_core_log_level,
-+ "============================================================"
-+ "================");
-+ vchiq_log_error(vchiq_core_log_level,
-+ "============================================================"
-+ "================");
-+}
-+
-+
-+VCHIQ_STATUS_T vchiq_send_remote_use(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_STATUS_T status = VCHIQ_RETRY;
-+ if (state->conn_state != VCHIQ_CONNSTATE_DISCONNECTED)
-+ status = queue_message(state, NULL,
-+ VCHIQ_MAKE_MSG(VCHIQ_MSG_REMOTE_USE, 0, 0),
-+ NULL, 0, 0, 0);
-+ return status;
-+}
-+
-+VCHIQ_STATUS_T vchiq_send_remote_release(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_STATUS_T status = VCHIQ_RETRY;
-+ if (state->conn_state != VCHIQ_CONNSTATE_DISCONNECTED)
-+ status = queue_message(state, NULL,
-+ VCHIQ_MAKE_MSG(VCHIQ_MSG_REMOTE_RELEASE, 0, 0),
-+ NULL, 0, 0, 0);
-+ return status;
-+}
-+
-+VCHIQ_STATUS_T vchiq_send_remote_use_active(VCHIQ_STATE_T *state)
-+{
-+ VCHIQ_STATUS_T status = VCHIQ_RETRY;
-+ if (state->conn_state != VCHIQ_CONNSTATE_DISCONNECTED)
-+ status = queue_message(state, NULL,
-+ VCHIQ_MAKE_MSG(VCHIQ_MSG_REMOTE_USE_ACTIVE, 0, 0),
-+ NULL, 0, 0, 0);
-+ return status;
-+}
-+
-+void vchiq_log_dump_mem(const char *label, uint32_t addr, const void *voidMem,
-+ size_t numBytes)
-+{
-+ const uint8_t *mem = (const uint8_t *)voidMem;
-+ size_t offset;
-+ char lineBuf[100];
-+ char *s;
-+
-+ while (numBytes > 0) {
-+ s = lineBuf;
-+
-+ for (offset = 0; offset < 16; offset++) {
-+ if (offset < numBytes)
-+ s += snprintf(s, 4, "%02x ", mem[offset]);
-+ else
-+ s += snprintf(s, 4, " ");
-+ }
-+
-+ for (offset = 0; offset < 16; offset++) {
-+ if (offset < numBytes) {
-+ uint8_t ch = mem[offset];
-+
-+ if ((ch < ' ') || (ch > '~'))
-+ ch = '.';
-+ *s++ = (char)ch;
-+ }
-+ }
-+ *s++ = '\0';
-+
-+ if ((label != NULL) && (*label != '\0'))
-+ vchiq_log_trace(VCHIQ_LOG_TRACE,
-+ "%s: %08x: %s", label, addr, lineBuf);
-+ else
-+ vchiq_log_trace(VCHIQ_LOG_TRACE,
-+ "%08x: %s", addr, lineBuf);
-+
-+ addr += 16;
-+ mem += 16;
-+ if (numBytes > 16)
-+ numBytes -= 16;
-+ else
-+ numBytes = 0;
-+ }
-+}
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.h b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.h
-new file mode 100644
-index 0000000..47cdf27
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_core.h
-@@ -0,0 +1,706 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef VCHIQ_CORE_H
-+#define VCHIQ_CORE_H
-+
-+#include <linux/mutex.h>
-+#include <linux/semaphore.h>
-+#include <linux/kthread.h>
-+
-+#include "vchiq_cfg.h"
-+
-+#include "vchiq.h"
-+
-+/* Run time control of log level, based on KERN_XXX level. */
-+#define VCHIQ_LOG_DEFAULT 4
-+#define VCHIQ_LOG_ERROR 3
-+#define VCHIQ_LOG_WARNING 4
-+#define VCHIQ_LOG_INFO 6
-+#define VCHIQ_LOG_TRACE 7
-+
-+#define VCHIQ_LOG_PREFIX KERN_INFO "vchiq: "
-+
-+#ifndef vchiq_log_error
-+#define vchiq_log_error(cat, fmt, ...) \
-+ do { if (cat >= VCHIQ_LOG_ERROR) \
-+ printk(VCHIQ_LOG_PREFIX fmt "\n", ##__VA_ARGS__); } while (0)
-+#endif
-+#ifndef vchiq_log_warning
-+#define vchiq_log_warning(cat, fmt, ...) \
-+ do { if (cat >= VCHIQ_LOG_WARNING) \
-+ printk(VCHIQ_LOG_PREFIX fmt "\n", ##__VA_ARGS__); } while (0)
-+#endif
-+#ifndef vchiq_log_info
-+#define vchiq_log_info(cat, fmt, ...) \
-+ do { if (cat >= VCHIQ_LOG_INFO) \
-+ printk(VCHIQ_LOG_PREFIX fmt "\n", ##__VA_ARGS__); } while (0)
-+#endif
-+#ifndef vchiq_log_trace
-+#define vchiq_log_trace(cat, fmt, ...) \
-+ do { if (cat >= VCHIQ_LOG_TRACE) \
-+ printk(VCHIQ_LOG_PREFIX fmt "\n", ##__VA_ARGS__); } while (0)
-+#endif
-+
-+#define vchiq_loud_error(...) \
-+ vchiq_log_error(vchiq_core_log_level, "===== " __VA_ARGS__)
-+
-+#ifndef vchiq_static_assert
-+#define vchiq_static_assert(cond) __attribute__((unused)) \
-+ extern int vchiq_static_assert[(cond) ? 1 : -1]
-+#endif
-+
-+#define IS_POW2(x) (x && ((x & (x - 1)) == 0))
-+
-+/* Ensure that the slot size and maximum number of slots are powers of 2 */
-+vchiq_static_assert(IS_POW2(VCHIQ_SLOT_SIZE));
-+vchiq_static_assert(IS_POW2(VCHIQ_MAX_SLOTS));
-+vchiq_static_assert(IS_POW2(VCHIQ_MAX_SLOTS_PER_SIDE));
-+
-+#define VCHIQ_SLOT_MASK (VCHIQ_SLOT_SIZE - 1)
-+#define VCHIQ_SLOT_QUEUE_MASK (VCHIQ_MAX_SLOTS_PER_SIDE - 1)
-+#define VCHIQ_SLOT_ZERO_SLOTS ((sizeof(VCHIQ_SLOT_ZERO_T) + \
-+ VCHIQ_SLOT_SIZE - 1) / VCHIQ_SLOT_SIZE)
-+
-+#define VCHIQ_MSG_PADDING 0 /* - */
-+#define VCHIQ_MSG_CONNECT 1 /* - */
-+#define VCHIQ_MSG_OPEN 2 /* + (srcport, -), fourcc, client_id */
-+#define VCHIQ_MSG_OPENACK 3 /* + (srcport, dstport) */
-+#define VCHIQ_MSG_CLOSE 4 /* + (srcport, dstport) */
-+#define VCHIQ_MSG_DATA 5 /* + (srcport, dstport) */
-+#define VCHIQ_MSG_BULK_RX 6 /* + (srcport, dstport), data, size */
-+#define VCHIQ_MSG_BULK_TX 7 /* + (srcport, dstport), data, size */
-+#define VCHIQ_MSG_BULK_RX_DONE 8 /* + (srcport, dstport), actual */
-+#define VCHIQ_MSG_BULK_TX_DONE 9 /* + (srcport, dstport), actual */
-+#define VCHIQ_MSG_PAUSE 10 /* - */
-+#define VCHIQ_MSG_RESUME 11 /* - */
-+#define VCHIQ_MSG_REMOTE_USE 12 /* - */
-+#define VCHIQ_MSG_REMOTE_RELEASE 13 /* - */
-+#define VCHIQ_MSG_REMOTE_USE_ACTIVE 14 /* - */
-+
-+#define VCHIQ_PORT_MAX (VCHIQ_MAX_SERVICES - 1)
-+#define VCHIQ_PORT_FREE 0x1000
-+#define VCHIQ_PORT_IS_VALID(port) (port < VCHIQ_PORT_FREE)
-+#define VCHIQ_MAKE_MSG(type, srcport, dstport) \
-+ ((type<<24) | (srcport<<12) | (dstport<<0))
-+#define VCHIQ_MSG_TYPE(msgid) ((unsigned int)msgid >> 24)
-+#define VCHIQ_MSG_SRCPORT(msgid) \
-+ (unsigned short)(((unsigned int)msgid >> 12) & 0xfff)
-+#define VCHIQ_MSG_DSTPORT(msgid) \
-+ ((unsigned short)msgid & 0xfff)
-+
-+#define VCHIQ_FOURCC_AS_4CHARS(fourcc) \
-+ ((fourcc) >> 24) & 0xff, \
-+ ((fourcc) >> 16) & 0xff, \
-+ ((fourcc) >> 8) & 0xff, \
-+ (fourcc) & 0xff
-+
-+/* Ensure the fields are wide enough */
-+vchiq_static_assert(VCHIQ_MSG_SRCPORT(VCHIQ_MAKE_MSG(0, 0, VCHIQ_PORT_MAX))
-+ == 0);
-+vchiq_static_assert(VCHIQ_MSG_TYPE(VCHIQ_MAKE_MSG(0, VCHIQ_PORT_MAX, 0)) == 0);
-+vchiq_static_assert((unsigned int)VCHIQ_PORT_MAX <
-+ (unsigned int)VCHIQ_PORT_FREE);
-+
-+#define VCHIQ_MSGID_PADDING VCHIQ_MAKE_MSG(VCHIQ_MSG_PADDING, 0, 0)
-+#define VCHIQ_MSGID_CLAIMED 0x40000000
-+
-+#define VCHIQ_FOURCC_INVALID 0x00000000
-+#define VCHIQ_FOURCC_IS_LEGAL(fourcc) (fourcc != VCHIQ_FOURCC_INVALID)
-+
-+#define VCHIQ_BULK_ACTUAL_ABORTED -1
-+
-+typedef uint32_t BITSET_T;
-+
-+vchiq_static_assert((sizeof(BITSET_T) * 8) == 32);
-+
-+#define BITSET_SIZE(b) ((b + 31) >> 5)
-+#define BITSET_WORD(b) (b >> 5)
-+#define BITSET_BIT(b) (1 << (b & 31))
-+#define BITSET_ZERO(bs) memset(bs, 0, sizeof(bs))
-+#define BITSET_IS_SET(bs, b) (bs[BITSET_WORD(b)] & BITSET_BIT(b))
-+#define BITSET_SET(bs, b) (bs[BITSET_WORD(b)] |= BITSET_BIT(b))
-+#define BITSET_CLR(bs, b) (bs[BITSET_WORD(b)] &= ~BITSET_BIT(b))
-+
-+#if VCHIQ_ENABLE_STATS
-+#define VCHIQ_STATS_INC(state, stat) (state->stats. stat++)
-+#define VCHIQ_SERVICE_STATS_INC(service, stat) (service->stats. stat++)
-+#define VCHIQ_SERVICE_STATS_ADD(service, stat, addend) \
-+ (service->stats. stat += addend)
-+#else
-+#define VCHIQ_STATS_INC(state, stat) ((void)0)
-+#define VCHIQ_SERVICE_STATS_INC(service, stat) ((void)0)
-+#define VCHIQ_SERVICE_STATS_ADD(service, stat, addend) ((void)0)
-+#endif
-+
-+enum {
-+ DEBUG_ENTRIES,
-+#if VCHIQ_ENABLE_DEBUG
-+ DEBUG_SLOT_HANDLER_COUNT,
-+ DEBUG_SLOT_HANDLER_LINE,
-+ DEBUG_PARSE_LINE,
-+ DEBUG_PARSE_HEADER,
-+ DEBUG_PARSE_MSGID,
-+ DEBUG_AWAIT_COMPLETION_LINE,
-+ DEBUG_DEQUEUE_MESSAGE_LINE,
-+ DEBUG_SERVICE_CALLBACK_LINE,
-+ DEBUG_MSG_QUEUE_FULL_COUNT,
-+ DEBUG_COMPLETION_QUEUE_FULL_COUNT,
-+#endif
-+ DEBUG_MAX
-+};
-+
-+#if VCHIQ_ENABLE_DEBUG
-+
-+#define DEBUG_INITIALISE(local) int *debug_ptr = (local)->debug;
-+#define DEBUG_TRACE(d) \
-+ do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(); } while (0)
-+#define DEBUG_VALUE(d, v) \
-+ do { debug_ptr[DEBUG_ ## d] = (v); dsb(); } while (0)
-+#define DEBUG_COUNT(d) \
-+ do { debug_ptr[DEBUG_ ## d]++; dsb(); } while (0)
-+
-+#else /* VCHIQ_ENABLE_DEBUG */
-+
-+#define DEBUG_INITIALISE(local)
-+#define DEBUG_TRACE(d)
-+#define DEBUG_VALUE(d, v)
-+#define DEBUG_COUNT(d)
-+
-+#endif /* VCHIQ_ENABLE_DEBUG */
-+
-+typedef enum {
-+ VCHIQ_CONNSTATE_DISCONNECTED,
-+ VCHIQ_CONNSTATE_CONNECTING,
-+ VCHIQ_CONNSTATE_CONNECTED,
-+ VCHIQ_CONNSTATE_PAUSING,
-+ VCHIQ_CONNSTATE_PAUSE_SENT,
-+ VCHIQ_CONNSTATE_PAUSED,
-+ VCHIQ_CONNSTATE_RESUMING,
-+ VCHIQ_CONNSTATE_PAUSE_TIMEOUT,
-+ VCHIQ_CONNSTATE_RESUME_TIMEOUT
-+} VCHIQ_CONNSTATE_T;
-+
-+enum {
-+ VCHIQ_SRVSTATE_FREE,
-+ VCHIQ_SRVSTATE_HIDDEN,
-+ VCHIQ_SRVSTATE_LISTENING,
-+ VCHIQ_SRVSTATE_OPENING,
-+ VCHIQ_SRVSTATE_OPEN,
-+ VCHIQ_SRVSTATE_OPENSYNC,
-+ VCHIQ_SRVSTATE_CLOSESENT,
-+ VCHIQ_SRVSTATE_CLOSERECVD,
-+ VCHIQ_SRVSTATE_CLOSEWAIT,
-+ VCHIQ_SRVSTATE_CLOSED
-+};
-+
-+enum {
-+ VCHIQ_POLL_TERMINATE,
-+ VCHIQ_POLL_REMOVE,
-+ VCHIQ_POLL_TXNOTIFY,
-+ VCHIQ_POLL_RXNOTIFY,
-+ VCHIQ_POLL_COUNT
-+};
-+
-+typedef enum {
-+ VCHIQ_BULK_TRANSMIT,
-+ VCHIQ_BULK_RECEIVE
-+} VCHIQ_BULK_DIR_T;
-+
-+typedef void (*VCHIQ_USERDATA_TERM_T)(void *userdata);
-+
-+typedef struct vchiq_bulk_struct {
-+ short mode;
-+ short dir;
-+ void *userdata;
-+ VCHI_MEM_HANDLE_T handle;
-+ void *data;
-+ int size;
-+ void *remote_data;
-+ int remote_size;
-+ int actual;
-+} VCHIQ_BULK_T;
-+
-+typedef struct vchiq_bulk_queue_struct {
-+ int local_insert; /* Where to insert the next local bulk */
-+ int remote_insert; /* Where to insert the next remote bulk (master) */
-+ int process; /* Bulk to transfer next */
-+ int remote_notify; /* Bulk to notify the remote client of next (mstr) */
-+ int remove; /* Bulk to notify the local client of, and remove,
-+ ** next */
-+ VCHIQ_BULK_T bulks[VCHIQ_NUM_SERVICE_BULKS];
-+} VCHIQ_BULK_QUEUE_T;
-+
-+typedef struct remote_event_struct {
-+ int armed;
-+ int fired;
-+ struct semaphore *event;
-+} REMOTE_EVENT_T;
-+
-+typedef struct opaque_platform_state_t *VCHIQ_PLATFORM_STATE_T;
-+
-+typedef struct vchiq_state_struct VCHIQ_STATE_T;
-+
-+typedef struct vchiq_slot_struct {
-+ char data[VCHIQ_SLOT_SIZE];
-+} VCHIQ_SLOT_T;
-+
-+typedef struct vchiq_slot_info_struct {
-+ /* Use two counters rather than one to avoid the need for a mutex. */
-+ short use_count;
-+ short release_count;
-+} VCHIQ_SLOT_INFO_T;
-+
-+typedef struct vchiq_service_struct {
-+ VCHIQ_SERVICE_BASE_T base;
-+ VCHIQ_SERVICE_HANDLE_T handle;
-+ unsigned int ref_count;
-+ int srvstate;
-+ VCHIQ_USERDATA_TERM_T userdata_term;
-+ unsigned int localport;
-+ unsigned int remoteport;
-+ int public_fourcc;
-+ int client_id;
-+ char auto_close;
-+ char sync;
-+ char closing;
-+ atomic_t poll_flags;
-+ short version;
-+ short version_min;
-+ short peer_version;
-+
-+ VCHIQ_STATE_T *state;
-+ VCHIQ_INSTANCE_T instance;
-+
-+ int service_use_count;
-+
-+ VCHIQ_BULK_QUEUE_T bulk_tx;
-+ VCHIQ_BULK_QUEUE_T bulk_rx;
-+
-+ struct semaphore remove_event;
-+ struct semaphore bulk_remove_event;
-+ struct mutex bulk_mutex;
-+
-+ struct service_stats_struct {
-+ int quota_stalls;
-+ int slot_stalls;
-+ int bulk_stalls;
-+ int error_count;
-+ int ctrl_tx_count;
-+ int ctrl_rx_count;
-+ int bulk_tx_count;
-+ int bulk_rx_count;
-+ int bulk_aborted_count;
-+ uint64_t ctrl_tx_bytes;
-+ uint64_t ctrl_rx_bytes;
-+ uint64_t bulk_tx_bytes;
-+ uint64_t bulk_rx_bytes;
-+ } stats;
-+} VCHIQ_SERVICE_T;
-+
-+/* The quota information is outside VCHIQ_SERVICE_T so that it can be
-+ statically allocated, since for accounting reasons a service's slot
-+ usage is carried over between users of the same port number.
-+ */
-+typedef struct vchiq_service_quota_struct {
-+ unsigned short slot_quota;
-+ unsigned short slot_use_count;
-+ unsigned short message_quota;
-+ unsigned short message_use_count;
-+ struct semaphore quota_event;
-+ int previous_tx_index;
-+} VCHIQ_SERVICE_QUOTA_T;
-+
-+typedef struct vchiq_shared_state_struct {
-+
-+ /* A non-zero value here indicates that the content is valid. */
-+ int initialised;
-+
-+ /* The first and last (inclusive) slots allocated to the owner. */
-+ int slot_first;
-+ int slot_last;
-+
-+ /* The slot allocated to synchronous messages from the owner. */
-+ int slot_sync;
-+
-+ /* Signalling this event indicates that owner's slot handler thread
-+ ** should run. */
-+ REMOTE_EVENT_T trigger;
-+
-+ /* Indicates the byte position within the stream where the next message
-+ ** will be written. The least significant bits are an index into the
-+ ** slot. The next bits are the index of the slot in slot_queue. */
-+ int tx_pos;
-+
-+ /* This event should be signalled when a slot is recycled. */
-+ REMOTE_EVENT_T recycle;
-+
-+ /* The slot_queue index where the next recycled slot will be written. */
-+ int slot_queue_recycle;
-+
-+ /* This event should be signalled when a synchronous message is sent. */
-+ REMOTE_EVENT_T sync_trigger;
-+
-+ /* This event should be signalled when a synchronous message has been
-+ ** released. */
-+ REMOTE_EVENT_T sync_release;
-+
-+ /* A circular buffer of slot indexes. */
-+ int slot_queue[VCHIQ_MAX_SLOTS_PER_SIDE];
-+
-+ /* Debugging state */
-+ int debug[DEBUG_MAX];
-+} VCHIQ_SHARED_STATE_T;
-+
-+typedef struct vchiq_slot_zero_struct {
-+ int magic;
-+ short version;
-+ short version_min;
-+ int slot_zero_size;
-+ int slot_size;
-+ int max_slots;
-+ int max_slots_per_side;
-+ int platform_data[2];
-+ VCHIQ_SHARED_STATE_T master;
-+ VCHIQ_SHARED_STATE_T slave;
-+ VCHIQ_SLOT_INFO_T slots[VCHIQ_MAX_SLOTS];
-+} VCHIQ_SLOT_ZERO_T;
-+
-+struct vchiq_state_struct {
-+ int id;
-+ int initialised;
-+ VCHIQ_CONNSTATE_T conn_state;
-+ int is_master;
-+
-+ VCHIQ_SHARED_STATE_T *local;
-+ VCHIQ_SHARED_STATE_T *remote;
-+ VCHIQ_SLOT_T *slot_data;
-+
-+ unsigned short default_slot_quota;
-+ unsigned short default_message_quota;
-+
-+ /* Event indicating connect message received */
-+ struct semaphore connect;
-+
-+ /* Mutex protecting services */
-+ struct mutex mutex;
-+ VCHIQ_INSTANCE_T *instance;
-+
-+ /* Processes incoming messages */
-+ struct task_struct *slot_handler_thread;
-+
-+ /* Processes recycled slots */
-+ struct task_struct *recycle_thread;
-+
-+ /* Processes synchronous messages */
-+ struct task_struct *sync_thread;
-+
-+ /* Local implementation of the trigger remote event */
-+ struct semaphore trigger_event;
-+
-+ /* Local implementation of the recycle remote event */
-+ struct semaphore recycle_event;
-+
-+ /* Local implementation of the sync trigger remote event */
-+ struct semaphore sync_trigger_event;
-+
-+ /* Local implementation of the sync release remote event */
-+ struct semaphore sync_release_event;
-+
-+ char *tx_data;
-+ char *rx_data;
-+ VCHIQ_SLOT_INFO_T *rx_info;
-+
-+ struct mutex slot_mutex;
-+
-+ struct mutex recycle_mutex;
-+
-+ struct mutex sync_mutex;
-+
-+ struct mutex bulk_transfer_mutex;
-+
-+ /* Indicates the byte position within the stream from where the next
-+ ** message will be read. The least significant bits are an index into
-+ ** the slot.The next bits are the index of the slot in
-+ ** remote->slot_queue. */
-+ int rx_pos;
-+
-+ /* A cached copy of local->tx_pos. Only write to local->tx_pos, and read
-+ from remote->tx_pos. */
-+ int local_tx_pos;
-+
-+ /* The slot_queue index of the slot to become available next. */
-+ int slot_queue_available;
-+
-+ /* A flag to indicate if any poll has been requested */
-+ int poll_needed;
-+
-+ /* Ths index of the previous slot used for data messages. */
-+ int previous_data_index;
-+
-+ /* The number of slots occupied by data messages. */
-+ unsigned short data_use_count;
-+
-+ /* The maximum number of slots to be occupied by data messages. */
-+ unsigned short data_quota;
-+
-+ /* An array of bit sets indicating which services must be polled. */
-+ atomic_t poll_services[BITSET_SIZE(VCHIQ_MAX_SERVICES)];
-+
-+ /* The number of the first unused service */
-+ int unused_service;
-+
-+ /* Signalled when a free slot becomes available. */
-+ struct semaphore slot_available_event;
-+
-+ struct semaphore slot_remove_event;
-+
-+ /* Signalled when a free data slot becomes available. */
-+ struct semaphore data_quota_event;
-+
-+ /* Incremented when there are bulk transfers which cannot be processed
-+ * whilst paused and must be processed on resume */
-+ int deferred_bulks;
-+
-+ struct state_stats_struct {
-+ int slot_stalls;
-+ int data_stalls;
-+ int ctrl_tx_count;
-+ int ctrl_rx_count;
-+ int error_count;
-+ } stats;
-+
-+ VCHIQ_SERVICE_T * services[VCHIQ_MAX_SERVICES];
-+ VCHIQ_SERVICE_QUOTA_T service_quotas[VCHIQ_MAX_SERVICES];
-+ VCHIQ_SLOT_INFO_T slot_info[VCHIQ_MAX_SLOTS];
-+
-+ VCHIQ_PLATFORM_STATE_T platform_state;
-+};
-+
-+struct bulk_waiter {
-+ VCHIQ_BULK_T *bulk;
-+ struct semaphore event;
-+ int actual;
-+};
-+
-+extern spinlock_t bulk_waiter_spinlock;
-+
-+extern int vchiq_core_log_level;
-+extern int vchiq_core_msg_log_level;
-+extern int vchiq_sync_log_level;
-+
-+extern VCHIQ_STATE_T *vchiq_states[VCHIQ_MAX_STATES];
-+
-+extern const char *
-+get_conn_state_name(VCHIQ_CONNSTATE_T conn_state);
-+
-+extern VCHIQ_SLOT_ZERO_T *
-+vchiq_init_slots(void *mem_base, int mem_size);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_init_state(VCHIQ_STATE_T *state, VCHIQ_SLOT_ZERO_T *slot_zero,
-+ int is_master);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_connect_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance);
-+
-+extern VCHIQ_SERVICE_T *
-+vchiq_add_service_internal(VCHIQ_STATE_T *state,
-+ const VCHIQ_SERVICE_PARAMS_T *params, int srvstate,
-+ VCHIQ_INSTANCE_T instance, VCHIQ_USERDATA_TERM_T userdata_term);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_open_service_internal(VCHIQ_SERVICE_T *service, int client_id);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_close_service_internal(VCHIQ_SERVICE_T *service, int close_recvd);
-+
-+extern void
-+vchiq_terminate_service_internal(VCHIQ_SERVICE_T *service);
-+
-+extern void
-+vchiq_free_service_internal(VCHIQ_SERVICE_T *service);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_shutdown_internal(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_pause_internal(VCHIQ_STATE_T *state);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_resume_internal(VCHIQ_STATE_T *state);
-+
-+extern void
-+remote_event_pollall(VCHIQ_STATE_T *state);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle,
-+ VCHI_MEM_HANDLE_T memhandle, void *offset, int size, void *userdata,
-+ VCHIQ_BULK_MODE_T mode, VCHIQ_BULK_DIR_T dir);
-+
-+extern void
-+vchiq_dump_state(void *dump_context, VCHIQ_STATE_T *state);
-+
-+extern void
-+vchiq_dump_service_state(void *dump_context, VCHIQ_SERVICE_T *service);
-+
-+extern void
-+vchiq_loud_error_header(void);
-+
-+extern void
-+vchiq_loud_error_footer(void);
-+
-+extern void
-+request_poll(VCHIQ_STATE_T *state, VCHIQ_SERVICE_T *service, int poll_type);
-+
-+static inline VCHIQ_SERVICE_T *
-+handle_to_service(VCHIQ_SERVICE_HANDLE_T handle)
-+{
-+ VCHIQ_STATE_T *state = vchiq_states[(handle / VCHIQ_MAX_SERVICES) &
-+ (VCHIQ_MAX_STATES - 1)];
-+ if (!state)
-+ return NULL;
-+
-+ return state->services[handle & (VCHIQ_MAX_SERVICES - 1)];
-+}
-+
-+extern VCHIQ_SERVICE_T *
-+find_service_by_handle(VCHIQ_SERVICE_HANDLE_T handle);
-+
-+extern VCHIQ_SERVICE_T *
-+find_service_by_port(VCHIQ_STATE_T *state, int localport);
-+
-+extern VCHIQ_SERVICE_T *
-+find_service_for_instance(VCHIQ_INSTANCE_T instance,
-+ VCHIQ_SERVICE_HANDLE_T handle);
-+
-+extern VCHIQ_SERVICE_T *
-+next_service_by_instance(VCHIQ_STATE_T *state, VCHIQ_INSTANCE_T instance,
-+ int *pidx);
-+
-+extern void
-+lock_service(VCHIQ_SERVICE_T *service);
-+
-+extern void
-+unlock_service(VCHIQ_SERVICE_T *service);
-+
-+/* The following functions are called from vchiq_core, and external
-+** implementations must be provided. */
-+
-+extern VCHIQ_STATUS_T
-+vchiq_prepare_bulk_data(VCHIQ_BULK_T *bulk,
-+ VCHI_MEM_HANDLE_T memhandle, void *offset, int size, int dir);
-+
-+extern void
-+vchiq_transfer_bulk(VCHIQ_BULK_T *bulk);
-+
-+extern void
-+vchiq_complete_bulk(VCHIQ_BULK_T *bulk);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_copy_from_user(void *dst, const void *src, int size);
-+
-+extern void
-+remote_event_signal(REMOTE_EVENT_T *event);
-+
-+void
-+vchiq_platform_check_suspend(VCHIQ_STATE_T *state);
-+
-+extern void
-+vchiq_platform_paused(VCHIQ_STATE_T *state);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_platform_resume(VCHIQ_STATE_T *state);
-+
-+extern void
-+vchiq_platform_resumed(VCHIQ_STATE_T *state);
-+
-+extern void
-+vchiq_dump(void *dump_context, const char *str, int len);
-+
-+extern void
-+vchiq_dump_platform_state(void *dump_context);
-+
-+extern void
-+vchiq_dump_platform_instances(void *dump_context);
-+
-+extern void
-+vchiq_dump_platform_service_state(void *dump_context,
-+ VCHIQ_SERVICE_T *service);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_use_service_internal(VCHIQ_SERVICE_T *service);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_release_service_internal(VCHIQ_SERVICE_T *service);
-+
-+extern void
-+vchiq_on_remote_use(VCHIQ_STATE_T *state);
-+
-+extern void
-+vchiq_on_remote_release(VCHIQ_STATE_T *state);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_platform_init_state(VCHIQ_STATE_T *state);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_check_service(VCHIQ_SERVICE_T *service);
-+
-+extern void
-+vchiq_on_remote_use_active(VCHIQ_STATE_T *state);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_send_remote_use(VCHIQ_STATE_T *state);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_send_remote_release(VCHIQ_STATE_T *state);
-+
-+extern VCHIQ_STATUS_T
-+vchiq_send_remote_use_active(VCHIQ_STATE_T *state);
-+
-+extern void
-+vchiq_platform_conn_state_changed(VCHIQ_STATE_T *state,
-+ VCHIQ_CONNSTATE_T oldstate, VCHIQ_CONNSTATE_T newstate);
-+
-+extern void
-+vchiq_platform_handle_timeout(VCHIQ_STATE_T *state);
-+
-+extern void
-+vchiq_set_conn_state(VCHIQ_STATE_T *state, VCHIQ_CONNSTATE_T newstate);
-+
-+
-+extern void
-+vchiq_log_dump_mem(const char *label, uint32_t addr, const void *voidMem,
-+ size_t numBytes);
-+
-+#endif
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_genversion b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_genversion
-new file mode 100644
-index 0000000..77dd613
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_genversion
-@@ -0,0 +1,89 @@
-+#!/usr/bin/perl -w
-+
-+use strict;
-+
-+#
-+# Generate a version from available information
-+#
-+
-+my $prefix = shift @ARGV;
-+my $root = shift @ARGV;
-+
-+
-+if ( not defined $root ) {
-+ die "usage: $0 prefix root-dir\n";
-+}
-+
-+if ( ! -d $root ) {
-+ die "root directory $root not found\n";
-+}
-+
-+my $version = "unknown";
-+my $tainted = "";
-+
-+if ( -d "$root/.git" ) {
-+ # attempt to work out git version. only do so
-+ # on a linux build host, as cygwin builds are
-+ # already slow enough
-+
-+ if ( -f "/usr/bin/git" || -f "/usr/local/bin/git" ) {
-+ if (not open(F, "git --git-dir $root/.git rev-parse --verify HEAD|")) {
-+ $version = "no git version";
-+ }
-+ else {
-+ $version = <F>;
-+ $version =~ s/[ \r\n]*$//; # chomp may not be enough (cygwin).
-+ $version =~ s/^[ \r\n]*//; # chomp may not be enough (cygwin).
-+ }
-+
-+ if (open(G, "git --git-dir $root/.git status --porcelain|")) {
-+ $tainted = <G>;
-+ $tainted =~ s/[ \r\n]*$//; # chomp may not be enough (cygwin).
-+ $tainted =~ s/^[ \r\n]*//; # chomp may not be enough (cygwin).
-+ if (length $tainted) {
-+ $version = join ' ', $version, "(tainted)";
-+ }
-+ else {
-+ $version = join ' ', $version, "(clean)";
-+ }
-+ }
-+ }
-+}
-+
-+my $hostname = `hostname`;
-+$hostname =~ s/[ \r\n]*$//; # chomp may not be enough (cygwin).
-+$hostname =~ s/^[ \r\n]*//; # chomp may not be enough (cygwin).
-+
-+
-+print STDERR "Version $version\n";
-+print <<EOF;
-+#include "${prefix}_build_info.h"
-+#include <linux/broadcom/vc_debug_sym.h>
-+
-+VC_DEBUG_DECLARE_STRING_VAR( ${prefix}_build_hostname, "$hostname" );
-+VC_DEBUG_DECLARE_STRING_VAR( ${prefix}_build_version, "$version" );
-+VC_DEBUG_DECLARE_STRING_VAR( ${prefix}_build_time, __TIME__ );
-+VC_DEBUG_DECLARE_STRING_VAR( ${prefix}_build_date, __DATE__ );
-+
-+const char *vchiq_get_build_hostname( void )
-+{
-+ return vchiq_build_hostname;
-+}
-+
-+const char *vchiq_get_build_version( void )
-+{
-+ return vchiq_build_version;
-+}
-+
-+const char *vchiq_get_build_date( void )
-+{
-+ return vchiq_build_date;
-+}
-+
-+const char *vchiq_get_build_time( void )
-+{
-+ return vchiq_build_time;
-+}
-+EOF
-+
-+
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_if.h b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_if.h
-new file mode 100644
-index 0000000..50359b0
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_if.h
-@@ -0,0 +1,188 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef VCHIQ_IF_H
-+#define VCHIQ_IF_H
-+
-+#include "interface/vchi/vchi_mh.h"
-+
-+#define VCHIQ_SERVICE_HANDLE_INVALID 0
-+
-+#define VCHIQ_SLOT_SIZE 4096
-+#define VCHIQ_MAX_MSG_SIZE (VCHIQ_SLOT_SIZE - sizeof(VCHIQ_HEADER_T))
-+#define VCHIQ_CHANNEL_SIZE VCHIQ_MAX_MSG_SIZE /* For backwards compatibility */
-+
-+#define VCHIQ_MAKE_FOURCC(x0, x1, x2, x3) \
-+ (((x0) << 24) | ((x1) << 16) | ((x2) << 8) | (x3))
-+#define VCHIQ_GET_SERVICE_USERDATA(service) vchiq_get_service_userdata(service)
-+#define VCHIQ_GET_SERVICE_FOURCC(service) vchiq_get_service_fourcc(service)
-+
-+typedef enum {
-+ VCHIQ_SERVICE_OPENED, /* service, -, - */
-+ VCHIQ_SERVICE_CLOSED, /* service, -, - */
-+ VCHIQ_MESSAGE_AVAILABLE, /* service, header, - */
-+ VCHIQ_BULK_TRANSMIT_DONE, /* service, -, bulk_userdata */
-+ VCHIQ_BULK_RECEIVE_DONE, /* service, -, bulk_userdata */
-+ VCHIQ_BULK_TRANSMIT_ABORTED, /* service, -, bulk_userdata */
-+ VCHIQ_BULK_RECEIVE_ABORTED /* service, -, bulk_userdata */
-+} VCHIQ_REASON_T;
-+
-+typedef enum {
-+ VCHIQ_ERROR = -1,
-+ VCHIQ_SUCCESS = 0,
-+ VCHIQ_RETRY = 1
-+} VCHIQ_STATUS_T;
-+
-+typedef enum {
-+ VCHIQ_BULK_MODE_CALLBACK,
-+ VCHIQ_BULK_MODE_BLOCKING,
-+ VCHIQ_BULK_MODE_NOCALLBACK,
-+ VCHIQ_BULK_MODE_WAITING /* Reserved for internal use */
-+} VCHIQ_BULK_MODE_T;
-+
-+typedef enum {
-+ VCHIQ_SERVICE_OPTION_AUTOCLOSE,
-+ VCHIQ_SERVICE_OPTION_SLOT_QUOTA,
-+ VCHIQ_SERVICE_OPTION_MESSAGE_QUOTA,
-+ VCHIQ_SERVICE_OPTION_SYNCHRONOUS
-+} VCHIQ_SERVICE_OPTION_T;
-+
-+typedef struct vchiq_header_struct {
-+ /* The message identifier - opaque to applications. */
-+ int msgid;
-+
-+ /* Size of message data. */
-+ unsigned int size;
-+
-+ char data[0]; /* message */
-+} VCHIQ_HEADER_T;
-+
-+typedef struct {
-+ const void *data;
-+ unsigned int size;
-+} VCHIQ_ELEMENT_T;
-+
-+typedef unsigned int VCHIQ_SERVICE_HANDLE_T;
-+
-+typedef VCHIQ_STATUS_T (*VCHIQ_CALLBACK_T)(VCHIQ_REASON_T, VCHIQ_HEADER_T *,
-+ VCHIQ_SERVICE_HANDLE_T, void *);
-+
-+typedef struct vchiq_service_base_struct {
-+ int fourcc;
-+ VCHIQ_CALLBACK_T callback;
-+ void *userdata;
-+} VCHIQ_SERVICE_BASE_T;
-+
-+typedef struct vchiq_service_params_struct {
-+ int fourcc;
-+ VCHIQ_CALLBACK_T callback;
-+ void *userdata;
-+ short version; /* Increment for non-trivial changes */
-+ short version_min; /* Update for incompatible changes */
-+} VCHIQ_SERVICE_PARAMS_T;
-+
-+typedef struct vchiq_config_struct {
-+ unsigned int max_msg_size;
-+ unsigned int bulk_threshold; /* The message size above which it
-+ is better to use a bulk transfer
-+ (<= max_msg_size) */
-+ unsigned int max_outstanding_bulks;
-+ unsigned int max_services;
-+ short version; /* The version of VCHIQ */
-+ short version_min; /* The minimum compatible version of VCHIQ */
-+} VCHIQ_CONFIG_T;
-+
-+typedef struct vchiq_instance_struct *VCHIQ_INSTANCE_T;
-+typedef void (*VCHIQ_REMOTE_USE_CALLBACK_T)(void *cb_arg);
-+
-+extern VCHIQ_STATUS_T vchiq_initialise(VCHIQ_INSTANCE_T *pinstance);
-+extern VCHIQ_STATUS_T vchiq_shutdown(VCHIQ_INSTANCE_T instance);
-+extern VCHIQ_STATUS_T vchiq_connect(VCHIQ_INSTANCE_T instance);
-+extern VCHIQ_STATUS_T vchiq_add_service(VCHIQ_INSTANCE_T instance,
-+ const VCHIQ_SERVICE_PARAMS_T *params,
-+ VCHIQ_SERVICE_HANDLE_T *pservice);
-+extern VCHIQ_STATUS_T vchiq_open_service(VCHIQ_INSTANCE_T instance,
-+ const VCHIQ_SERVICE_PARAMS_T *params,
-+ VCHIQ_SERVICE_HANDLE_T *pservice);
-+extern VCHIQ_STATUS_T vchiq_close_service(VCHIQ_SERVICE_HANDLE_T service);
-+extern VCHIQ_STATUS_T vchiq_remove_service(VCHIQ_SERVICE_HANDLE_T service);
-+extern VCHIQ_STATUS_T vchiq_use_service(VCHIQ_SERVICE_HANDLE_T service);
-+extern VCHIQ_STATUS_T vchiq_use_service_no_resume(
-+ VCHIQ_SERVICE_HANDLE_T service);
-+extern VCHIQ_STATUS_T vchiq_release_service(VCHIQ_SERVICE_HANDLE_T service);
-+
-+extern VCHIQ_STATUS_T vchiq_queue_message(VCHIQ_SERVICE_HANDLE_T service,
-+ const VCHIQ_ELEMENT_T *elements, unsigned int count);
-+extern void vchiq_release_message(VCHIQ_SERVICE_HANDLE_T service,
-+ VCHIQ_HEADER_T *header);
-+extern VCHIQ_STATUS_T vchiq_queue_bulk_transmit(VCHIQ_SERVICE_HANDLE_T service,
-+ const void *data, unsigned int size, void *userdata);
-+extern VCHIQ_STATUS_T vchiq_queue_bulk_receive(VCHIQ_SERVICE_HANDLE_T service,
-+ void *data, unsigned int size, void *userdata);
-+extern VCHIQ_STATUS_T vchiq_queue_bulk_transmit_handle(
-+ VCHIQ_SERVICE_HANDLE_T service, VCHI_MEM_HANDLE_T handle,
-+ const void *offset, unsigned int size, void *userdata);
-+extern VCHIQ_STATUS_T vchiq_queue_bulk_receive_handle(
-+ VCHIQ_SERVICE_HANDLE_T service, VCHI_MEM_HANDLE_T handle,
-+ void *offset, unsigned int size, void *userdata);
-+extern VCHIQ_STATUS_T vchiq_bulk_transmit(VCHIQ_SERVICE_HANDLE_T service,
-+ const void *data, unsigned int size, void *userdata,
-+ VCHIQ_BULK_MODE_T mode);
-+extern VCHIQ_STATUS_T vchiq_bulk_receive(VCHIQ_SERVICE_HANDLE_T service,
-+ void *data, unsigned int size, void *userdata,
-+ VCHIQ_BULK_MODE_T mode);
-+extern VCHIQ_STATUS_T vchiq_bulk_transmit_handle(VCHIQ_SERVICE_HANDLE_T service,
-+ VCHI_MEM_HANDLE_T handle, const void *offset, unsigned int size,
-+ void *userdata, VCHIQ_BULK_MODE_T mode);
-+extern VCHIQ_STATUS_T vchiq_bulk_receive_handle(VCHIQ_SERVICE_HANDLE_T service,
-+ VCHI_MEM_HANDLE_T handle, void *offset, unsigned int size,
-+ void *userdata, VCHIQ_BULK_MODE_T mode);
-+extern int vchiq_get_client_id(VCHIQ_SERVICE_HANDLE_T service);
-+extern void *vchiq_get_service_userdata(VCHIQ_SERVICE_HANDLE_T service);
-+extern int vchiq_get_service_fourcc(VCHIQ_SERVICE_HANDLE_T service);
-+extern VCHIQ_STATUS_T vchiq_get_config(VCHIQ_INSTANCE_T instance,
-+ int config_size, VCHIQ_CONFIG_T *pconfig);
-+extern VCHIQ_STATUS_T vchiq_set_service_option(VCHIQ_SERVICE_HANDLE_T service,
-+ VCHIQ_SERVICE_OPTION_T option, int value);
-+
-+extern VCHIQ_STATUS_T vchiq_remote_use(VCHIQ_INSTANCE_T instance,
-+ VCHIQ_REMOTE_USE_CALLBACK_T callback, void *cb_arg);
-+extern VCHIQ_STATUS_T vchiq_remote_release(VCHIQ_INSTANCE_T instance);
-+
-+extern VCHIQ_STATUS_T vchiq_dump_phys_mem(VCHIQ_SERVICE_HANDLE_T service,
-+ void *ptr, size_t num_bytes);
-+
-+extern VCHIQ_STATUS_T vchiq_get_peer_version(VCHIQ_SERVICE_HANDLE_T handle,
-+ short *peer_version);
-+
-+#endif /* VCHIQ_IF_H */
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_ioctl.h b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_ioctl.h
-new file mode 100644
-index 0000000..e248037
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_ioctl.h
-@@ -0,0 +1,129 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef VCHIQ_IOCTLS_H
-+#define VCHIQ_IOCTLS_H
-+
-+#include <linux/ioctl.h>
-+#include "vchiq_if.h"
-+
-+#define VCHIQ_IOC_MAGIC 0xc4
-+#define VCHIQ_INVALID_HANDLE (~0)
-+
-+typedef struct {
-+ VCHIQ_SERVICE_PARAMS_T params;
-+ int is_open;
-+ int is_vchi;
-+ unsigned int handle; /* OUT */
-+} VCHIQ_CREATE_SERVICE_T;
-+
-+typedef struct {
-+ unsigned int handle;
-+ unsigned int count;
-+ const VCHIQ_ELEMENT_T *elements;
-+} VCHIQ_QUEUE_MESSAGE_T;
-+
-+typedef struct {
-+ unsigned int handle;
-+ void *data;
-+ unsigned int size;
-+ void *userdata;
-+ VCHIQ_BULK_MODE_T mode;
-+} VCHIQ_QUEUE_BULK_TRANSFER_T;
-+
-+typedef struct {
-+ VCHIQ_REASON_T reason;
-+ VCHIQ_HEADER_T *header;
-+ void *service_userdata;
-+ void *bulk_userdata;
-+} VCHIQ_COMPLETION_DATA_T;
-+
-+typedef struct {
-+ unsigned int count;
-+ VCHIQ_COMPLETION_DATA_T *buf;
-+ unsigned int msgbufsize;
-+ unsigned int msgbufcount; /* IN/OUT */
-+ void **msgbufs;
-+} VCHIQ_AWAIT_COMPLETION_T;
-+
-+typedef struct {
-+ unsigned int handle;
-+ int blocking;
-+ unsigned int bufsize;
-+ void *buf;
-+} VCHIQ_DEQUEUE_MESSAGE_T;
-+
-+typedef struct {
-+ unsigned int config_size;
-+ VCHIQ_CONFIG_T *pconfig;
-+} VCHIQ_GET_CONFIG_T;
-+
-+typedef struct {
-+ unsigned int handle;
-+ VCHIQ_SERVICE_OPTION_T option;
-+ int value;
-+} VCHIQ_SET_SERVICE_OPTION_T;
-+
-+typedef struct {
-+ void *virt_addr;
-+ size_t num_bytes;
-+} VCHIQ_DUMP_MEM_T;
-+
-+#define VCHIQ_IOC_CONNECT _IO(VCHIQ_IOC_MAGIC, 0)
-+#define VCHIQ_IOC_SHUTDOWN _IO(VCHIQ_IOC_MAGIC, 1)
-+#define VCHIQ_IOC_CREATE_SERVICE \
-+ _IOWR(VCHIQ_IOC_MAGIC, 2, VCHIQ_CREATE_SERVICE_T)
-+#define VCHIQ_IOC_REMOVE_SERVICE _IO(VCHIQ_IOC_MAGIC, 3)
-+#define VCHIQ_IOC_QUEUE_MESSAGE \
-+ _IOW(VCHIQ_IOC_MAGIC, 4, VCHIQ_QUEUE_MESSAGE_T)
-+#define VCHIQ_IOC_QUEUE_BULK_TRANSMIT \
-+ _IOWR(VCHIQ_IOC_MAGIC, 5, VCHIQ_QUEUE_BULK_TRANSFER_T)
-+#define VCHIQ_IOC_QUEUE_BULK_RECEIVE \
-+ _IOWR(VCHIQ_IOC_MAGIC, 6, VCHIQ_QUEUE_BULK_TRANSFER_T)
-+#define VCHIQ_IOC_AWAIT_COMPLETION \
-+ _IOWR(VCHIQ_IOC_MAGIC, 7, VCHIQ_AWAIT_COMPLETION_T)
-+#define VCHIQ_IOC_DEQUEUE_MESSAGE \
-+ _IOWR(VCHIQ_IOC_MAGIC, 8, VCHIQ_DEQUEUE_MESSAGE_T)
-+#define VCHIQ_IOC_GET_CLIENT_ID _IO(VCHIQ_IOC_MAGIC, 9)
-+#define VCHIQ_IOC_GET_CONFIG \
-+ _IOWR(VCHIQ_IOC_MAGIC, 10, VCHIQ_GET_CONFIG_T)
-+#define VCHIQ_IOC_CLOSE_SERVICE _IO(VCHIQ_IOC_MAGIC, 11)
-+#define VCHIQ_IOC_USE_SERVICE _IO(VCHIQ_IOC_MAGIC, 12)
-+#define VCHIQ_IOC_RELEASE_SERVICE _IO(VCHIQ_IOC_MAGIC, 13)
-+#define VCHIQ_IOC_SET_SERVICE_OPTION \
-+ _IOW(VCHIQ_IOC_MAGIC, 14, VCHIQ_SET_SERVICE_OPTION_T)
-+#define VCHIQ_IOC_DUMP_PHYS_MEM \
-+ _IOW(VCHIQ_IOC_MAGIC, 15, VCHIQ_DUMP_MEM_T)
-+#define VCHIQ_IOC_MAX 15
-+
-+#endif
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_kern_lib.c b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_kern_lib.c
-new file mode 100644
-index 0000000..be9735f
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_kern_lib.c
-@@ -0,0 +1,456 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+/* ---- Include Files ---------------------------------------------------- */
-+
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/mutex.h>
-+
-+#include "vchiq_core.h"
-+#include "vchiq_arm.h"
-+
-+/* ---- Public Variables ------------------------------------------------- */
-+
-+/* ---- Private Constants and Types -------------------------------------- */
-+
-+struct bulk_waiter_node {
-+ struct bulk_waiter bulk_waiter;
-+ int pid;
-+ struct list_head list;
-+};
-+
-+struct vchiq_instance_struct {
-+ VCHIQ_STATE_T *state;
-+
-+ int connected;
-+
-+ struct list_head bulk_waiter_list;
-+ struct mutex bulk_waiter_list_mutex;
-+};
-+
-+static VCHIQ_STATUS_T
-+vchiq_blocking_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle, void *data,
-+ unsigned int size, VCHIQ_BULK_DIR_T dir);
-+
-+/****************************************************************************
-+*
-+* vchiq_initialise
-+*
-+***************************************************************************/
-+#define VCHIQ_INIT_RETRIES 10
-+VCHIQ_STATUS_T vchiq_initialise(VCHIQ_INSTANCE_T *instanceOut)
-+{
-+ VCHIQ_STATUS_T status = VCHIQ_ERROR;
-+ VCHIQ_STATE_T *state;
-+ VCHIQ_INSTANCE_T instance = NULL;
-+ int i;
-+
-+ vchiq_log_trace(vchiq_core_log_level, "%s called", __func__);
-+
-+ /* VideoCore may not be ready due to boot up timing.
-+ It may never be ready if kernel and firmware are mismatched, so don't block forever. */
-+ for (i=0; i<VCHIQ_INIT_RETRIES; i++) {
-+ state = vchiq_get_state();
-+ if (state)
-+ break;
-+ udelay(500);
-+ }
-+ if (i==VCHIQ_INIT_RETRIES) {
-+ vchiq_log_error(vchiq_core_log_level,
-+ "%s: videocore not initialized\n", __func__);
-+ goto failed;
-+ } else if (i>0) {
-+ vchiq_log_warning(vchiq_core_log_level,
-+ "%s: videocore initialized after %d retries\n", __func__, i);
-+ }
-+
-+ instance = kzalloc(sizeof(*instance), GFP_KERNEL);
-+ if (!instance) {
-+ vchiq_log_error(vchiq_core_log_level,
-+ "%s: error allocating vchiq instance\n", __func__);
-+ goto failed;
-+ }
-+
-+ instance->connected = 0;
-+ instance->state = state;
-+ mutex_init(&instance->bulk_waiter_list_mutex);
-+ INIT_LIST_HEAD(&instance->bulk_waiter_list);
-+
-+ *instanceOut = instance;
-+
-+ status = VCHIQ_SUCCESS;
-+
-+failed:
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%s(%p): returning %d", __func__, instance, status);
-+
-+ return status;
-+}
-+EXPORT_SYMBOL(vchiq_initialise);
-+
-+/****************************************************************************
-+*
-+* vchiq_shutdown
-+*
-+***************************************************************************/
-+
-+VCHIQ_STATUS_T vchiq_shutdown(VCHIQ_INSTANCE_T instance)
-+{
-+ VCHIQ_STATUS_T status;
-+ VCHIQ_STATE_T *state = instance->state;
-+
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%s(%p) called", __func__, instance);
-+
-+ if (mutex_lock_interruptible(&state->mutex) != 0)
-+ return VCHIQ_RETRY;
-+
-+ /* Remove all services */
-+ status = vchiq_shutdown_internal(state, instance);
-+
-+ mutex_unlock(&state->mutex);
-+
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%s(%p): returning %d", __func__, instance, status);
-+
-+ if (status == VCHIQ_SUCCESS) {
-+ struct list_head *pos, *next;
-+ list_for_each_safe(pos, next,
-+ &instance->bulk_waiter_list) {
-+ struct bulk_waiter_node *waiter;
-+ waiter = list_entry(pos,
-+ struct bulk_waiter_node,
-+ list);
-+ list_del(pos);
-+ vchiq_log_info(vchiq_arm_log_level,
-+ "bulk_waiter - cleaned up %x "
-+ "for pid %d",
-+ (unsigned int)waiter, waiter->pid);
-+ kfree(waiter);
-+ }
-+ kfree(instance);
-+ }
-+
-+ return status;
-+}
-+EXPORT_SYMBOL(vchiq_shutdown);
-+
-+/****************************************************************************
-+*
-+* vchiq_is_connected
-+*
-+***************************************************************************/
-+
-+int vchiq_is_connected(VCHIQ_INSTANCE_T instance)
-+{
-+ return instance->connected;
-+}
-+
-+/****************************************************************************
-+*
-+* vchiq_connect
-+*
-+***************************************************************************/
-+
-+VCHIQ_STATUS_T vchiq_connect(VCHIQ_INSTANCE_T instance)
-+{
-+ VCHIQ_STATUS_T status;
-+ VCHIQ_STATE_T *state = instance->state;
-+
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%s(%p) called", __func__, instance);
-+
-+ if (mutex_lock_interruptible(&state->mutex) != 0) {
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%s: call to mutex_lock failed", __func__);
-+ status = VCHIQ_RETRY;
-+ goto failed;
-+ }
-+ status = vchiq_connect_internal(state, instance);
-+
-+ if (status == VCHIQ_SUCCESS)
-+ instance->connected = 1;
-+
-+ mutex_unlock(&state->mutex);
-+
-+failed:
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%s(%p): returning %d", __func__, instance, status);
-+
-+ return status;
-+}
-+EXPORT_SYMBOL(vchiq_connect);
-+
-+/****************************************************************************
-+*
-+* vchiq_add_service
-+*
-+***************************************************************************/
-+
-+VCHIQ_STATUS_T vchiq_add_service(
-+ VCHIQ_INSTANCE_T instance,
-+ const VCHIQ_SERVICE_PARAMS_T *params,
-+ VCHIQ_SERVICE_HANDLE_T *phandle)
-+{
-+ VCHIQ_STATUS_T status;
-+ VCHIQ_STATE_T *state = instance->state;
-+ VCHIQ_SERVICE_T *service = NULL;
-+ int srvstate;
-+
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%s(%p) called", __func__, instance);
-+
-+ *phandle = VCHIQ_SERVICE_HANDLE_INVALID;
-+
-+ srvstate = vchiq_is_connected(instance)
-+ ? VCHIQ_SRVSTATE_LISTENING
-+ : VCHIQ_SRVSTATE_HIDDEN;
-+
-+ service = vchiq_add_service_internal(
-+ state,
-+ params,
-+ srvstate,
-+ instance,
-+ NULL);
-+
-+ if (service) {
-+ *phandle = service->handle;
-+ status = VCHIQ_SUCCESS;
-+ } else
-+ status = VCHIQ_ERROR;
-+
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%s(%p): returning %d", __func__, instance, status);
-+
-+ return status;
-+}
-+EXPORT_SYMBOL(vchiq_add_service);
-+
-+/****************************************************************************
-+*
-+* vchiq_open_service
-+*
-+***************************************************************************/
-+
-+VCHIQ_STATUS_T vchiq_open_service(
-+ VCHIQ_INSTANCE_T instance,
-+ const VCHIQ_SERVICE_PARAMS_T *params,
-+ VCHIQ_SERVICE_HANDLE_T *phandle)
-+{
-+ VCHIQ_STATUS_T status = VCHIQ_ERROR;
-+ VCHIQ_STATE_T *state = instance->state;
-+ VCHIQ_SERVICE_T *service = NULL;
-+
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%s(%p) called", __func__, instance);
-+
-+ *phandle = VCHIQ_SERVICE_HANDLE_INVALID;
-+
-+ if (!vchiq_is_connected(instance))
-+ goto failed;
-+
-+ service = vchiq_add_service_internal(state,
-+ params,
-+ VCHIQ_SRVSTATE_OPENING,
-+ instance,
-+ NULL);
-+
-+ if (service) {
-+ status = vchiq_open_service_internal(service, current->pid);
-+ if (status == VCHIQ_SUCCESS)
-+ *phandle = service->handle;
-+ else
-+ vchiq_remove_service(service->handle);
-+ }
-+
-+failed:
-+ vchiq_log_trace(vchiq_core_log_level,
-+ "%s(%p): returning %d", __func__, instance, status);
-+
-+ return status;
-+}
-+EXPORT_SYMBOL(vchiq_open_service);
-+
-+VCHIQ_STATUS_T
-+vchiq_queue_bulk_transmit(VCHIQ_SERVICE_HANDLE_T handle,
-+ const void *data, unsigned int size, void *userdata)
-+{
-+ return vchiq_bulk_transfer(handle,
-+ VCHI_MEM_HANDLE_INVALID, (void *)data, size, userdata,
-+ VCHIQ_BULK_MODE_CALLBACK, VCHIQ_BULK_TRANSMIT);
-+}
-+EXPORT_SYMBOL(vchiq_queue_bulk_transmit);
-+
-+VCHIQ_STATUS_T
-+vchiq_queue_bulk_receive(VCHIQ_SERVICE_HANDLE_T handle, void *data,
-+ unsigned int size, void *userdata)
-+{
-+ return vchiq_bulk_transfer(handle,
-+ VCHI_MEM_HANDLE_INVALID, data, size, userdata,
-+ VCHIQ_BULK_MODE_CALLBACK, VCHIQ_BULK_RECEIVE);
-+}
-+EXPORT_SYMBOL(vchiq_queue_bulk_receive);
-+
-+VCHIQ_STATUS_T
-+vchiq_bulk_transmit(VCHIQ_SERVICE_HANDLE_T handle, const void *data,
-+ unsigned int size, void *userdata, VCHIQ_BULK_MODE_T mode)
-+{
-+ VCHIQ_STATUS_T status;
-+
-+ switch (mode) {
-+ case VCHIQ_BULK_MODE_NOCALLBACK:
-+ case VCHIQ_BULK_MODE_CALLBACK:
-+ status = vchiq_bulk_transfer(handle,
-+ VCHI_MEM_HANDLE_INVALID, (void *)data, size, userdata,
-+ mode, VCHIQ_BULK_TRANSMIT);
-+ break;
-+ case VCHIQ_BULK_MODE_BLOCKING:
-+ status = vchiq_blocking_bulk_transfer(handle,
-+ (void *)data, size, VCHIQ_BULK_TRANSMIT);
-+ break;
-+ default:
-+ return VCHIQ_ERROR;
-+ }
-+
-+ return status;
-+}
-+EXPORT_SYMBOL(vchiq_bulk_transmit);
-+
-+VCHIQ_STATUS_T
-+vchiq_bulk_receive(VCHIQ_SERVICE_HANDLE_T handle, void *data,
-+ unsigned int size, void *userdata, VCHIQ_BULK_MODE_T mode)
-+{
-+ VCHIQ_STATUS_T status;
-+
-+ switch (mode) {
-+ case VCHIQ_BULK_MODE_NOCALLBACK:
-+ case VCHIQ_BULK_MODE_CALLBACK:
-+ status = vchiq_bulk_transfer(handle,
-+ VCHI_MEM_HANDLE_INVALID, data, size, userdata,
-+ mode, VCHIQ_BULK_RECEIVE);
-+ break;
-+ case VCHIQ_BULK_MODE_BLOCKING:
-+ status = vchiq_blocking_bulk_transfer(handle,
-+ (void *)data, size, VCHIQ_BULK_RECEIVE);
-+ break;
-+ default:
-+ return VCHIQ_ERROR;
-+ }
-+
-+ return status;
-+}
-+EXPORT_SYMBOL(vchiq_bulk_receive);
-+
-+static VCHIQ_STATUS_T
-+vchiq_blocking_bulk_transfer(VCHIQ_SERVICE_HANDLE_T handle, void *data,
-+ unsigned int size, VCHIQ_BULK_DIR_T dir)
-+{
-+ VCHIQ_INSTANCE_T instance;
-+ VCHIQ_SERVICE_T *service;
-+ VCHIQ_STATUS_T status;
-+ struct bulk_waiter_node *waiter = NULL;
-+ struct list_head *pos;
-+
-+ service = find_service_by_handle(handle);
-+ if (!service)
-+ return VCHIQ_ERROR;
-+
-+ instance = service->instance;
-+
-+ unlock_service(service);
-+
-+ mutex_lock(&instance->bulk_waiter_list_mutex);
-+ list_for_each(pos, &instance->bulk_waiter_list) {
-+ if (list_entry(pos, struct bulk_waiter_node,
-+ list)->pid == current->pid) {
-+ waiter = list_entry(pos,
-+ struct bulk_waiter_node,
-+ list);
-+ list_del(pos);
-+ break;
-+ }
-+ }
-+ mutex_unlock(&instance->bulk_waiter_list_mutex);
-+
-+ if (waiter) {
-+ VCHIQ_BULK_T *bulk = waiter->bulk_waiter.bulk;
-+ if (bulk) {
-+ /* This thread has an outstanding bulk transfer. */
-+ if ((bulk->data != data) ||
-+ (bulk->size != size)) {
-+ /* This is not a retry of the previous one.
-+ ** Cancel the signal when the transfer
-+ ** completes. */
-+ spin_lock(&bulk_waiter_spinlock);
-+ bulk->userdata = NULL;
-+ spin_unlock(&bulk_waiter_spinlock);
-+ }
-+ }
-+ }
-+
-+ if (!waiter) {
-+ waiter = kzalloc(sizeof(struct bulk_waiter_node), GFP_KERNEL);
-+ if (!waiter) {
-+ vchiq_log_error(vchiq_core_log_level,
-+ "%s - out of memory", __func__);
-+ return VCHIQ_ERROR;
-+ }
-+ }
-+
-+ status = vchiq_bulk_transfer(handle, VCHI_MEM_HANDLE_INVALID,
-+ data, size, &waiter->bulk_waiter, VCHIQ_BULK_MODE_BLOCKING,
-+ dir);
-+ if ((status != VCHIQ_RETRY) || fatal_signal_pending(current) ||
-+ !waiter->bulk_waiter.bulk) {
-+ VCHIQ_BULK_T *bulk = waiter->bulk_waiter.bulk;
-+ if (bulk) {
-+ /* Cancel the signal when the transfer
-+ ** completes. */
-+ spin_lock(&bulk_waiter_spinlock);
-+ bulk->userdata = NULL;
-+ spin_unlock(&bulk_waiter_spinlock);
-+ }
-+ kfree(waiter);
-+ } else {
-+ waiter->pid = current->pid;
-+ mutex_lock(&instance->bulk_waiter_list_mutex);
-+ list_add(&waiter->list, &instance->bulk_waiter_list);
-+ mutex_unlock(&instance->bulk_waiter_list_mutex);
-+ vchiq_log_info(vchiq_arm_log_level,
-+ "saved bulk_waiter %x for pid %d",
-+ (unsigned int)waiter, current->pid);
-+ }
-+
-+ return status;
-+}
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_memdrv.h b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_memdrv.h
-new file mode 100644
-index 0000000..d02e776
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_memdrv.h
-@@ -0,0 +1,71 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef VCHIQ_MEMDRV_H
-+#define VCHIQ_MEMDRV_H
-+
-+/* ---- Include Files ----------------------------------------------------- */
-+
-+#include <linux/kernel.h>
-+#include "vchiq_if.h"
-+
-+/* ---- Constants and Types ---------------------------------------------- */
-+
-+typedef struct {
-+ void *armSharedMemVirt;
-+ dma_addr_t armSharedMemPhys;
-+ size_t armSharedMemSize;
-+
-+ void *vcSharedMemVirt;
-+ dma_addr_t vcSharedMemPhys;
-+ size_t vcSharedMemSize;
-+} VCHIQ_SHARED_MEM_INFO_T;
-+
-+/* ---- Variable Externs ------------------------------------------------- */
-+
-+/* ---- Function Prototypes ---------------------------------------------- */
-+
-+void vchiq_get_shared_mem_info(VCHIQ_SHARED_MEM_INFO_T *info);
-+
-+VCHIQ_STATUS_T vchiq_memdrv_initialise(void);
-+
-+VCHIQ_STATUS_T vchiq_userdrv_create_instance(
-+ const VCHIQ_PLATFORM_DATA_T * platform_data);
-+
-+VCHIQ_STATUS_T vchiq_userdrv_suspend(
-+ const VCHIQ_PLATFORM_DATA_T * platform_data);
-+
-+VCHIQ_STATUS_T vchiq_userdrv_resume(
-+ const VCHIQ_PLATFORM_DATA_T * platform_data);
-+
-+#endif
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_pagelist.h b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_pagelist.h
-new file mode 100644
-index 0000000..54a3ece
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_pagelist.h
-@@ -0,0 +1,58 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef VCHIQ_PAGELIST_H
-+#define VCHIQ_PAGELIST_H
-+
-+#ifndef PAGE_SIZE
-+#define PAGE_SIZE 4096
-+#endif
-+#define CACHE_LINE_SIZE 32
-+#define PAGELIST_WRITE 0
-+#define PAGELIST_READ 1
-+#define PAGELIST_READ_WITH_FRAGMENTS 2
-+
-+typedef struct pagelist_struct {
-+ unsigned long length;
-+ unsigned short type;
-+ unsigned short offset;
-+ unsigned long addrs[1]; /* N.B. 12 LSBs hold the number of following
-+ pages at consecutive addresses. */
-+} PAGELIST_T;
-+
-+typedef struct fragments_struct {
-+ char headbuf[CACHE_LINE_SIZE];
-+ char tailbuf[CACHE_LINE_SIZE];
-+} FRAGMENTS_T;
-+
-+#endif /* VCHIQ_PAGELIST_H */
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_proc.c b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_proc.c
-new file mode 100644
-index 0000000..dc3bdda
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_proc.c
-@@ -0,0 +1,254 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+
-+#include <linux/proc_fs.h>
-+#include "vchiq_core.h"
-+#include "vchiq_arm.h"
-+
-+#if 1
-+
-+int vchiq_proc_init(void)
-+{
-+ return 0;
-+}
-+
-+void vchiq_proc_deinit(void)
-+{
-+}
-+
-+#else
-+
-+struct vchiq_proc_info {
-+ /* Global 'vc' proc entry used by all instances */
-+ struct proc_dir_entry *vc_cfg_dir;
-+
-+ /* one entry per client process */
-+ struct proc_dir_entry *clients;
-+
-+ /* log categories */
-+ struct proc_dir_entry *log_categories;
-+};
-+
-+static struct vchiq_proc_info proc_info;
-+
-+struct proc_dir_entry *vchiq_proc_top(void)
-+{
-+ BUG_ON(proc_info.vc_cfg_dir == NULL);
-+ return proc_info.vc_cfg_dir;
-+}
-+
-+/****************************************************************************
-+*
-+* log category entries
-+*
-+***************************************************************************/
-+#define PROC_WRITE_BUF_SIZE 256
-+
-+#define VCHIQ_LOG_ERROR_STR "error"
-+#define VCHIQ_LOG_WARNING_STR "warning"
-+#define VCHIQ_LOG_INFO_STR "info"
-+#define VCHIQ_LOG_TRACE_STR "trace"
-+
-+static int log_cfg_read(char *buffer,
-+ char **start,
-+ off_t off,
-+ int count,
-+ int *eof,
-+ void *data)
-+{
-+ int len = 0;
-+ char *log_value = NULL;
-+
-+ switch (*((int *)data)) {
-+ case VCHIQ_LOG_ERROR:
-+ log_value = VCHIQ_LOG_ERROR_STR;
-+ break;
-+ case VCHIQ_LOG_WARNING:
-+ log_value = VCHIQ_LOG_WARNING_STR;
-+ break;
-+ case VCHIQ_LOG_INFO:
-+ log_value = VCHIQ_LOG_INFO_STR;
-+ break;
-+ case VCHIQ_LOG_TRACE:
-+ log_value = VCHIQ_LOG_TRACE_STR;
-+ break;
-+ default:
-+ break;
-+ }
-+
-+ len += sprintf(buffer + len,
-+ "%s\n",
-+ log_value ? log_value : "(null)");
-+
-+ return len;
-+}
-+
-+
-+static int log_cfg_write(struct file *file,
-+ const char __user *buffer,
-+ unsigned long count,
-+ void *data)
-+{
-+ int *log_module = data;
-+ char kbuf[PROC_WRITE_BUF_SIZE + 1];
-+
-+ (void)file;
-+
-+ memset(kbuf, 0, PROC_WRITE_BUF_SIZE + 1);
-+ if (count >= PROC_WRITE_BUF_SIZE)
-+ count = PROC_WRITE_BUF_SIZE;
-+
-+ if (copy_from_user(kbuf,
-+ buffer,
-+ count) != 0)
-+ return -EFAULT;
-+ kbuf[count - 1] = 0;
-+
-+ if (strncmp("error", kbuf, strlen("error")) == 0)
-+ *log_module = VCHIQ_LOG_ERROR;
-+ else if (strncmp("warning", kbuf, strlen("warning")) == 0)
-+ *log_module = VCHIQ_LOG_WARNING;
-+ else if (strncmp("info", kbuf, strlen("info")) == 0)
-+ *log_module = VCHIQ_LOG_INFO;
-+ else if (strncmp("trace", kbuf, strlen("trace")) == 0)
-+ *log_module = VCHIQ_LOG_TRACE;
-+ else
-+ *log_module = VCHIQ_LOG_DEFAULT;
-+
-+ return count;
-+}
-+
-+/* Log category proc entries */
-+struct vchiq_proc_log_entry {
-+ const char *name;
-+ int *plevel;
-+ struct proc_dir_entry *dir;
-+};
-+
-+static struct vchiq_proc_log_entry vchiq_proc_log_entries[] = {
-+ { "core", &vchiq_core_log_level },
-+ { "msg", &vchiq_core_msg_log_level },
-+ { "sync", &vchiq_sync_log_level },
-+ { "susp", &vchiq_susp_log_level },
-+ { "arm", &vchiq_arm_log_level },
-+};
-+static int n_log_entries =
-+ sizeof(vchiq_proc_log_entries)/sizeof(vchiq_proc_log_entries[0]);
-+
-+/* create an entry under /proc/vc/log for each log category */
-+static int vchiq_proc_create_log_entries(struct proc_dir_entry *top)
-+{
-+ struct proc_dir_entry *dir;
-+ size_t i;
-+ int ret = 0;
-+ dir = proc_mkdir("log", proc_info.vc_cfg_dir);
-+ if (!dir)
-+ return -ENOMEM;
-+ proc_info.log_categories = dir;
-+
-+ for (i = 0; i < n_log_entries; i++) {
-+ dir = create_proc_entry(vchiq_proc_log_entries[i].name,
-+ 0644,
-+ proc_info.log_categories);
-+ if (!dir) {
-+ ret = -ENOMEM;
-+ break;
-+ }
-+
-+ dir->read_proc = &log_cfg_read;
-+ dir->write_proc = &log_cfg_write;
-+ dir->data = (void *)vchiq_proc_log_entries[i].plevel;
-+
-+ vchiq_proc_log_entries[i].dir = dir;
-+ }
-+ return ret;
-+}
-+
-+
-+int vchiq_proc_init(void)
-+{
-+ BUG_ON(proc_info.vc_cfg_dir != NULL);
-+
-+ proc_info.vc_cfg_dir = proc_mkdir("vc", NULL);
-+ if (proc_info.vc_cfg_dir == NULL)
-+ goto fail;
-+
-+ proc_info.clients = proc_mkdir("clients",
-+ proc_info.vc_cfg_dir);
-+ if (!proc_info.clients)
-+ goto fail;
-+
-+ if (vchiq_proc_create_log_entries(proc_info.vc_cfg_dir) != 0)
-+ goto fail;
-+
-+ return 0;
-+
-+fail:
-+ vchiq_proc_deinit();
-+ vchiq_log_error(vchiq_arm_log_level,
-+ "%s: failed to create proc directory",
-+ __func__);
-+
-+ return -ENOMEM;
-+}
-+
-+/* remove all the proc entries */
-+void vchiq_proc_deinit(void)
-+{
-+ /* log category entries */
-+ if (proc_info.log_categories) {
-+ size_t i;
-+ for (i = 0; i < n_log_entries; i++)
-+ if (vchiq_proc_log_entries[i].dir)
-+ remove_proc_entry(
-+ vchiq_proc_log_entries[i].name,
-+ proc_info.log_categories);
-+
-+ remove_proc_entry(proc_info.log_categories->name,
-+ proc_info.vc_cfg_dir);
-+ }
-+ if (proc_info.clients)
-+ remove_proc_entry(proc_info.clients->name,
-+ proc_info.vc_cfg_dir);
-+ if (proc_info.vc_cfg_dir)
-+ remove_proc_entry(proc_info.vc_cfg_dir->name, NULL);
-+}
-+
-+struct proc_dir_entry *vchiq_clients_top(void)
-+{
-+ return proc_info.clients;
-+}
-+
-+#endif
-+
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_shim.c b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_shim.c
-new file mode 100644
-index 0000000..f752f8d
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_shim.c
-@@ -0,0 +1,815 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+#include <linux/module.h>
-+#include <linux/types.h>
-+
-+#include "interface/vchi/vchi.h"
-+#include "vchiq.h"
-+#include "vchiq_core.h"
-+
-+#include "vchiq_util.h"
-+
-+#include <stddef.h>
-+
-+#define vchiq_status_to_vchi(status) ((int32_t)status)
-+
-+typedef struct {
-+ VCHIQ_SERVICE_HANDLE_T handle;
-+
-+ VCHIU_QUEUE_T queue;
-+
-+ VCHI_CALLBACK_T callback;
-+ void *callback_param;
-+} SHIM_SERVICE_T;
-+
-+/* ----------------------------------------------------------------------
-+ * return pointer to the mphi message driver function table
-+ * -------------------------------------------------------------------- */
-+const VCHI_MESSAGE_DRIVER_T *
-+vchi_mphi_message_driver_func_table(void)
-+{
-+ return NULL;
-+}
-+
-+/* ----------------------------------------------------------------------
-+ * return a pointer to the 'single' connection driver fops
-+ * -------------------------------------------------------------------- */
-+const VCHI_CONNECTION_API_T *
-+single_get_func_table(void)
-+{
-+ return NULL;
-+}
-+
-+VCHI_CONNECTION_T *vchi_create_connection(
-+ const VCHI_CONNECTION_API_T *function_table,
-+ const VCHI_MESSAGE_DRIVER_T *low_level)
-+{
-+ (void)function_table;
-+ (void)low_level;
-+ return NULL;
-+}
-+
-+/***********************************************************
-+ * Name: vchi_msg_peek
-+ *
-+ * Arguments: const VCHI_SERVICE_HANDLE_T handle,
-+ * void **data,
-+ * uint32_t *msg_size,
-+
-+
-+ * VCHI_FLAGS_T flags
-+ *
-+ * Description: Routine to return a pointer to the current message (to allow in
-+ * place processing). The message can be removed using
-+ * vchi_msg_remove when you're finished
-+ *
-+ * Returns: int32_t - success == 0
-+ *
-+ ***********************************************************/
-+int32_t vchi_msg_peek(VCHI_SERVICE_HANDLE_T handle,
-+ void **data,
-+ uint32_t *msg_size,
-+ VCHI_FLAGS_T flags)
-+{
-+ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
-+ VCHIQ_HEADER_T *header;
-+
-+ WARN_ON((flags != VCHI_FLAGS_NONE) &&
-+ (flags != VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE));
-+
-+ if (flags == VCHI_FLAGS_NONE)
-+ if (vchiu_queue_is_empty(&service->queue))
-+ return -1;
-+
-+ header = vchiu_queue_peek(&service->queue);
-+
-+ *data = header->data;
-+ *msg_size = header->size;
-+
-+ return 0;
-+}
-+EXPORT_SYMBOL(vchi_msg_peek);
-+
-+/***********************************************************
-+ * Name: vchi_msg_remove
-+ *
-+ * Arguments: const VCHI_SERVICE_HANDLE_T handle,
-+ *
-+ * Description: Routine to remove a message (after it has been read with
-+ * vchi_msg_peek)
-+ *
-+ * Returns: int32_t - success == 0
-+ *
-+ ***********************************************************/
-+int32_t vchi_msg_remove(VCHI_SERVICE_HANDLE_T handle)
-+{
-+ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
-+ VCHIQ_HEADER_T *header;
-+
-+ header = vchiu_queue_pop(&service->queue);
-+
-+ vchiq_release_message(service->handle, header);
-+
-+ return 0;
-+}
-+EXPORT_SYMBOL(vchi_msg_remove);
-+
-+/***********************************************************
-+ * Name: vchi_msg_queue
-+ *
-+ * Arguments: VCHI_SERVICE_HANDLE_T handle,
-+ * const void *data,
-+ * uint32_t data_size,
-+ * VCHI_FLAGS_T flags,
-+ * void *msg_handle,
-+ *
-+ * Description: Thin wrapper to queue a message onto a connection
-+ *
-+ * Returns: int32_t - success == 0
-+ *
-+ ***********************************************************/
-+int32_t vchi_msg_queue(VCHI_SERVICE_HANDLE_T handle,
-+ const void *data,
-+ uint32_t data_size,
-+ VCHI_FLAGS_T flags,
-+ void *msg_handle)
-+{
-+ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
-+ VCHIQ_ELEMENT_T element = {data, data_size};
-+ VCHIQ_STATUS_T status;
-+
-+ (void)msg_handle;
-+
-+ WARN_ON(flags != VCHI_FLAGS_BLOCK_UNTIL_QUEUED);
-+
-+ status = vchiq_queue_message(service->handle, &element, 1);
-+
-+ /* vchiq_queue_message() may return VCHIQ_RETRY, so we need to
-+ ** implement a retry mechanism since this function is supposed
-+ ** to block until queued
-+ */
-+ while (status == VCHIQ_RETRY) {
-+ msleep(1);
-+ status = vchiq_queue_message(service->handle, &element, 1);
-+ }
-+
-+ return vchiq_status_to_vchi(status);
-+}
-+EXPORT_SYMBOL(vchi_msg_queue);
-+
-+/***********************************************************
-+ * Name: vchi_bulk_queue_receive
-+ *
-+ * Arguments: VCHI_BULK_HANDLE_T handle,
-+ * void *data_dst,
-+ * const uint32_t data_size,
-+ * VCHI_FLAGS_T flags
-+ * void *bulk_handle
-+ *
-+ * Description: Routine to setup a rcv buffer
-+ *
-+ * Returns: int32_t - success == 0
-+ *
-+ ***********************************************************/
-+int32_t vchi_bulk_queue_receive(VCHI_SERVICE_HANDLE_T handle,
-+ void *data_dst,
-+ uint32_t data_size,
-+ VCHI_FLAGS_T flags,
-+ void *bulk_handle)
-+{
-+ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
-+ VCHIQ_BULK_MODE_T mode;
-+ VCHIQ_STATUS_T status;
-+
-+ switch ((int)flags) {
-+ case VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE
-+ | VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
-+ WARN_ON(!service->callback);
-+ mode = VCHIQ_BULK_MODE_CALLBACK;
-+ break;
-+ case VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE:
-+ mode = VCHIQ_BULK_MODE_BLOCKING;
-+ break;
-+ case VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
-+ case VCHI_FLAGS_NONE:
-+ mode = VCHIQ_BULK_MODE_NOCALLBACK;
-+ break;
-+ default:
-+ WARN(1, "unsupported message\n");
-+ return vchiq_status_to_vchi(VCHIQ_ERROR);
-+ }
-+
-+ status = vchiq_bulk_receive(service->handle, data_dst, data_size,
-+ bulk_handle, mode);
-+
-+ /* vchiq_bulk_receive() may return VCHIQ_RETRY, so we need to
-+ ** implement a retry mechanism since this function is supposed
-+ ** to block until queued
-+ */
-+ while (status == VCHIQ_RETRY) {
-+ msleep(1);
-+ status = vchiq_bulk_receive(service->handle, data_dst,
-+ data_size, bulk_handle, mode);
-+ }
-+
-+ return vchiq_status_to_vchi(status);
-+}
-+EXPORT_SYMBOL(vchi_bulk_queue_receive);
-+
-+/***********************************************************
-+ * Name: vchi_bulk_queue_transmit
-+ *
-+ * Arguments: VCHI_BULK_HANDLE_T handle,
-+ * const void *data_src,
-+ * uint32_t data_size,
-+ * VCHI_FLAGS_T flags,
-+ * void *bulk_handle
-+ *
-+ * Description: Routine to transmit some data
-+ *
-+ * Returns: int32_t - success == 0
-+ *
-+ ***********************************************************/
-+int32_t vchi_bulk_queue_transmit(VCHI_SERVICE_HANDLE_T handle,
-+ const void *data_src,
-+ uint32_t data_size,
-+ VCHI_FLAGS_T flags,
-+ void *bulk_handle)
-+{
-+ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
-+ VCHIQ_BULK_MODE_T mode;
-+ VCHIQ_STATUS_T status;
-+
-+ switch ((int)flags) {
-+ case VCHI_FLAGS_CALLBACK_WHEN_OP_COMPLETE
-+ | VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
-+ WARN_ON(!service->callback);
-+ mode = VCHIQ_BULK_MODE_CALLBACK;
-+ break;
-+ case VCHI_FLAGS_BLOCK_UNTIL_DATA_READ:
-+ case VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE:
-+ mode = VCHIQ_BULK_MODE_BLOCKING;
-+ break;
-+ case VCHI_FLAGS_BLOCK_UNTIL_QUEUED:
-+ case VCHI_FLAGS_NONE:
-+ mode = VCHIQ_BULK_MODE_NOCALLBACK;
-+ break;
-+ default:
-+ WARN(1, "unsupported message\n");
-+ return vchiq_status_to_vchi(VCHIQ_ERROR);
-+ }
-+
-+ status = vchiq_bulk_transmit(service->handle, data_src, data_size,
-+ bulk_handle, mode);
-+
-+ /* vchiq_bulk_transmit() may return VCHIQ_RETRY, so we need to
-+ ** implement a retry mechanism since this function is supposed
-+ ** to block until queued
-+ */
-+ while (status == VCHIQ_RETRY) {
-+ msleep(1);
-+ status = vchiq_bulk_transmit(service->handle, data_src,
-+ data_size, bulk_handle, mode);
-+ }
-+
-+ return vchiq_status_to_vchi(status);
-+}
-+EXPORT_SYMBOL(vchi_bulk_queue_transmit);
-+
-+/***********************************************************
-+ * Name: vchi_msg_dequeue
-+ *
-+ * Arguments: VCHI_SERVICE_HANDLE_T handle,
-+ * void *data,
-+ * uint32_t max_data_size_to_read,
-+ * uint32_t *actual_msg_size
-+ * VCHI_FLAGS_T flags
-+ *
-+ * Description: Routine to dequeue a message into the supplied buffer
-+ *
-+ * Returns: int32_t - success == 0
-+ *
-+ ***********************************************************/
-+int32_t vchi_msg_dequeue(VCHI_SERVICE_HANDLE_T handle,
-+ void *data,
-+ uint32_t max_data_size_to_read,
-+ uint32_t *actual_msg_size,
-+ VCHI_FLAGS_T flags)
-+{
-+ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
-+ VCHIQ_HEADER_T *header;
-+
-+ WARN_ON((flags != VCHI_FLAGS_NONE) &&
-+ (flags != VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE));
-+
-+ if (flags == VCHI_FLAGS_NONE)
-+ if (vchiu_queue_is_empty(&service->queue))
-+ return -1;
-+
-+ header = vchiu_queue_pop(&service->queue);
-+
-+ memcpy(data, header->data, header->size < max_data_size_to_read ?
-+ header->size : max_data_size_to_read);
-+
-+ *actual_msg_size = header->size;
-+
-+ vchiq_release_message(service->handle, header);
-+
-+ return 0;
-+}
-+EXPORT_SYMBOL(vchi_msg_dequeue);
-+
-+/***********************************************************
-+ * Name: vchi_msg_queuev
-+ *
-+ * Arguments: VCHI_SERVICE_HANDLE_T handle,
-+ * VCHI_MSG_VECTOR_T *vector,
-+ * uint32_t count,
-+ * VCHI_FLAGS_T flags,
-+ * void *msg_handle
-+ *
-+ * Description: Thin wrapper to queue a message onto a connection
-+ *
-+ * Returns: int32_t - success == 0
-+ *
-+ ***********************************************************/
-+
-+vchiq_static_assert(sizeof(VCHI_MSG_VECTOR_T) == sizeof(VCHIQ_ELEMENT_T));
-+vchiq_static_assert(offsetof(VCHI_MSG_VECTOR_T, vec_base) ==
-+ offsetof(VCHIQ_ELEMENT_T, data));
-+vchiq_static_assert(offsetof(VCHI_MSG_VECTOR_T, vec_len) ==
-+ offsetof(VCHIQ_ELEMENT_T, size));
-+
-+int32_t vchi_msg_queuev(VCHI_SERVICE_HANDLE_T handle,
-+ VCHI_MSG_VECTOR_T *vector,
-+ uint32_t count,
-+ VCHI_FLAGS_T flags,
-+ void *msg_handle)
-+{
-+ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
-+
-+ (void)msg_handle;
-+
-+ WARN_ON(flags != VCHI_FLAGS_BLOCK_UNTIL_QUEUED);
-+
-+ return vchiq_status_to_vchi(vchiq_queue_message(service->handle,
-+ (const VCHIQ_ELEMENT_T *)vector, count));
-+}
-+EXPORT_SYMBOL(vchi_msg_queuev);
-+
-+/***********************************************************
-+ * Name: vchi_held_msg_release
-+ *
-+ * Arguments: VCHI_HELD_MSG_T *message
-+ *
-+ * Description: Routine to release a held message (after it has been read with
-+ * vchi_msg_hold)
-+ *
-+ * Returns: int32_t - success == 0
-+ *
-+ ***********************************************************/
-+int32_t vchi_held_msg_release(VCHI_HELD_MSG_T *message)
-+{
-+ vchiq_release_message((VCHIQ_SERVICE_HANDLE_T)message->service,
-+ (VCHIQ_HEADER_T *)message->message);
-+
-+ return 0;
-+}
-+
-+/***********************************************************
-+ * Name: vchi_msg_hold
-+ *
-+ * Arguments: VCHI_SERVICE_HANDLE_T handle,
-+ * void **data,
-+ * uint32_t *msg_size,
-+ * VCHI_FLAGS_T flags,
-+ * VCHI_HELD_MSG_T *message_handle
-+ *
-+ * Description: Routine to return a pointer to the current message (to allow
-+ * in place processing). The message is dequeued - don't forget
-+ * to release the message using vchi_held_msg_release when you're
-+ * finished.
-+ *
-+ * Returns: int32_t - success == 0
-+ *
-+ ***********************************************************/
-+int32_t vchi_msg_hold(VCHI_SERVICE_HANDLE_T handle,
-+ void **data,
-+ uint32_t *msg_size,
-+ VCHI_FLAGS_T flags,
-+ VCHI_HELD_MSG_T *message_handle)
-+{
-+ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
-+ VCHIQ_HEADER_T *header;
-+
-+ WARN_ON((flags != VCHI_FLAGS_NONE) &&
-+ (flags != VCHI_FLAGS_BLOCK_UNTIL_OP_COMPLETE));
-+
-+ if (flags == VCHI_FLAGS_NONE)
-+ if (vchiu_queue_is_empty(&service->queue))
-+ return -1;
-+
-+ header = vchiu_queue_pop(&service->queue);
-+
-+ *data = header->data;
-+ *msg_size = header->size;
-+
-+ message_handle->service =
-+ (struct opaque_vchi_service_t *)service->handle;
-+ message_handle->message = header;
-+
-+ return 0;
-+}
-+
-+/***********************************************************
-+ * Name: vchi_initialise
-+ *
-+ * Arguments: VCHI_INSTANCE_T *instance_handle
-+ * VCHI_CONNECTION_T **connections
-+ * const uint32_t num_connections
-+ *
-+ * Description: Initialises the hardware but does not transmit anything
-+ * When run as a Host App this will be called twice hence the need
-+ * to malloc the state information
-+ *
-+ * Returns: 0 if successful, failure otherwise
-+ *
-+ ***********************************************************/
-+
-+int32_t vchi_initialise(VCHI_INSTANCE_T *instance_handle)
-+{
-+ VCHIQ_INSTANCE_T instance;
-+ VCHIQ_STATUS_T status;
-+
-+ status = vchiq_initialise(&instance);
-+
-+ *instance_handle = (VCHI_INSTANCE_T)instance;
-+
-+ return vchiq_status_to_vchi(status);
-+}
-+EXPORT_SYMBOL(vchi_initialise);
-+
-+/***********************************************************
-+ * Name: vchi_connect
-+ *
-+ * Arguments: VCHI_CONNECTION_T **connections
-+ * const uint32_t num_connections
-+ * VCHI_INSTANCE_T instance_handle)
-+ *
-+ * Description: Starts the command service on each connection,
-+ * causing INIT messages to be pinged back and forth
-+ *
-+ * Returns: 0 if successful, failure otherwise
-+ *
-+ ***********************************************************/
-+int32_t vchi_connect(VCHI_CONNECTION_T **connections,
-+ const uint32_t num_connections,
-+ VCHI_INSTANCE_T instance_handle)
-+{
-+ VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle;
-+
-+ (void)connections;
-+ (void)num_connections;
-+
-+ return vchiq_connect(instance);
-+}
-+EXPORT_SYMBOL(vchi_connect);
-+
-+
-+/***********************************************************
-+ * Name: vchi_disconnect
-+ *
-+ * Arguments: VCHI_INSTANCE_T instance_handle
-+ *
-+ * Description: Stops the command service on each connection,
-+ * causing DE-INIT messages to be pinged back and forth
-+ *
-+ * Returns: 0 if successful, failure otherwise
-+ *
-+ ***********************************************************/
-+int32_t vchi_disconnect(VCHI_INSTANCE_T instance_handle)
-+{
-+ VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle;
-+ return vchiq_status_to_vchi(vchiq_shutdown(instance));
-+}
-+EXPORT_SYMBOL(vchi_disconnect);
-+
-+
-+/***********************************************************
-+ * Name: vchi_service_open
-+ * Name: vchi_service_create
-+ *
-+ * Arguments: VCHI_INSTANCE_T *instance_handle
-+ * SERVICE_CREATION_T *setup,
-+ * VCHI_SERVICE_HANDLE_T *handle
-+ *
-+ * Description: Routine to open a service
-+ *
-+ * Returns: int32_t - success == 0
-+ *
-+ ***********************************************************/
-+
-+static VCHIQ_STATUS_T shim_callback(VCHIQ_REASON_T reason,
-+ VCHIQ_HEADER_T *header, VCHIQ_SERVICE_HANDLE_T handle, void *bulk_user)
-+{
-+ SHIM_SERVICE_T *service =
-+ (SHIM_SERVICE_T *)VCHIQ_GET_SERVICE_USERDATA(handle);
-+
-+ switch (reason) {
-+ case VCHIQ_MESSAGE_AVAILABLE:
-+ vchiu_queue_push(&service->queue, header);
-+
-+ if (service->callback)
-+ service->callback(service->callback_param,
-+ VCHI_CALLBACK_MSG_AVAILABLE, NULL);
-+ break;
-+ case VCHIQ_BULK_TRANSMIT_DONE:
-+ if (service->callback)
-+ service->callback(service->callback_param,
-+ VCHI_CALLBACK_BULK_SENT, bulk_user);
-+ break;
-+ case VCHIQ_BULK_RECEIVE_DONE:
-+ if (service->callback)
-+ service->callback(service->callback_param,
-+ VCHI_CALLBACK_BULK_RECEIVED, bulk_user);
-+ break;
-+ case VCHIQ_SERVICE_CLOSED:
-+ if (service->callback)
-+ service->callback(service->callback_param,
-+ VCHI_CALLBACK_SERVICE_CLOSED, NULL);
-+ break;
-+ case VCHIQ_SERVICE_OPENED:
-+ /* No equivalent VCHI reason */
-+ break;
-+ case VCHIQ_BULK_TRANSMIT_ABORTED:
-+ if (service->callback)
-+ service->callback(service->callback_param,
-+ VCHI_CALLBACK_BULK_TRANSMIT_ABORTED, bulk_user);
-+ break;
-+ case VCHIQ_BULK_RECEIVE_ABORTED:
-+ if (service->callback)
-+ service->callback(service->callback_param,
-+ VCHI_CALLBACK_BULK_RECEIVE_ABORTED, bulk_user);
-+ break;
-+ default:
-+ WARN(1, "not supported\n");
-+ break;
-+ }
-+
-+ return VCHIQ_SUCCESS;
-+}
-+
-+static SHIM_SERVICE_T *service_alloc(VCHIQ_INSTANCE_T instance,
-+ SERVICE_CREATION_T *setup)
-+{
-+ SHIM_SERVICE_T *service = kzalloc(sizeof(SHIM_SERVICE_T), GFP_KERNEL);
-+
-+ (void)instance;
-+
-+ if (service) {
-+ if (vchiu_queue_init(&service->queue, 64)) {
-+ service->callback = setup->callback;
-+ service->callback_param = setup->callback_param;
-+ } else {
-+ kfree(service);
-+ service = NULL;
-+ }
-+ }
-+
-+ return service;
-+}
-+
-+static void service_free(SHIM_SERVICE_T *service)
-+{
-+ if (service) {
-+ vchiu_queue_delete(&service->queue);
-+ kfree(service);
-+ }
-+}
-+
-+int32_t vchi_service_open(VCHI_INSTANCE_T instance_handle,
-+ SERVICE_CREATION_T *setup,
-+ VCHI_SERVICE_HANDLE_T *handle)
-+{
-+ VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle;
-+ SHIM_SERVICE_T *service = service_alloc(instance, setup);
-+ if (service) {
-+ VCHIQ_SERVICE_PARAMS_T params;
-+ VCHIQ_STATUS_T status;
-+
-+ memset(¶ms, 0, sizeof(params));
-+ params.fourcc = setup->service_id;
-+ params.callback = shim_callback;
-+ params.userdata = service;
-+ params.version = setup->version.version;
-+ params.version_min = setup->version.version_min;
-+
-+ status = vchiq_open_service(instance, ¶ms,
-+ &service->handle);
-+ if (status != VCHIQ_SUCCESS) {
-+ service_free(service);
-+ service = NULL;
-+ }
-+ }
-+
-+ *handle = (VCHI_SERVICE_HANDLE_T)service;
-+
-+ return (service != NULL) ? 0 : -1;
-+}
-+EXPORT_SYMBOL(vchi_service_open);
-+
-+int32_t vchi_service_create(VCHI_INSTANCE_T instance_handle,
-+ SERVICE_CREATION_T *setup,
-+ VCHI_SERVICE_HANDLE_T *handle)
-+{
-+ VCHIQ_INSTANCE_T instance = (VCHIQ_INSTANCE_T)instance_handle;
-+ SHIM_SERVICE_T *service = service_alloc(instance, setup);
-+ if (service) {
-+ VCHIQ_SERVICE_PARAMS_T params;
-+ VCHIQ_STATUS_T status;
-+
-+ memset(¶ms, 0, sizeof(params));
-+ params.fourcc = setup->service_id;
-+ params.callback = shim_callback;
-+ params.userdata = service;
-+ params.version = setup->version.version;
-+ params.version_min = setup->version.version_min;
-+ status = vchiq_add_service(instance, ¶ms, &service->handle);
-+
-+ if (status != VCHIQ_SUCCESS) {
-+ service_free(service);
-+ service = NULL;
-+ }
-+ }
-+
-+ *handle = (VCHI_SERVICE_HANDLE_T)service;
-+
-+ return (service != NULL) ? 0 : -1;
-+}
-+EXPORT_SYMBOL(vchi_service_create);
-+
-+int32_t vchi_service_close(const VCHI_SERVICE_HANDLE_T handle)
-+{
-+ int32_t ret = -1;
-+ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
-+ if (service) {
-+ VCHIQ_STATUS_T status = vchiq_close_service(service->handle);
-+ if (status == VCHIQ_SUCCESS) {
-+ service_free(service);
-+ service = NULL;
-+ }
-+
-+ ret = vchiq_status_to_vchi(status);
-+ }
-+ return ret;
-+}
-+EXPORT_SYMBOL(vchi_service_close);
-+
-+int32_t vchi_service_destroy(const VCHI_SERVICE_HANDLE_T handle)
-+{
-+ int32_t ret = -1;
-+ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
-+ if (service) {
-+ VCHIQ_STATUS_T status = vchiq_remove_service(service->handle);
-+ if (status == VCHIQ_SUCCESS) {
-+ service_free(service);
-+ service = NULL;
-+ }
-+
-+ ret = vchiq_status_to_vchi(status);
-+ }
-+ return ret;
-+}
-+EXPORT_SYMBOL(vchi_service_destroy);
-+
-+int32_t vchi_get_peer_version( const VCHI_SERVICE_HANDLE_T handle, short *peer_version )
-+{
-+ int32_t ret = -1;
-+ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
-+ if(service)
-+ {
-+ VCHIQ_STATUS_T status = vchiq_get_peer_version(service->handle, peer_version);
-+ ret = vchiq_status_to_vchi( status );
-+ }
-+ return ret;
-+}
-+EXPORT_SYMBOL(vchi_get_peer_version);
-+
-+/* ----------------------------------------------------------------------
-+ * read a uint32_t from buffer.
-+ * network format is defined to be little endian
-+ * -------------------------------------------------------------------- */
-+uint32_t
-+vchi_readbuf_uint32(const void *_ptr)
-+{
-+ const unsigned char *ptr = _ptr;
-+ return ptr[0] | (ptr[1] << 8) | (ptr[2] << 16) | (ptr[3] << 24);
-+}
-+
-+/* ----------------------------------------------------------------------
-+ * write a uint32_t to buffer.
-+ * network format is defined to be little endian
-+ * -------------------------------------------------------------------- */
-+void
-+vchi_writebuf_uint32(void *_ptr, uint32_t value)
-+{
-+ unsigned char *ptr = _ptr;
-+ ptr[0] = (unsigned char)((value >> 0) & 0xFF);
-+ ptr[1] = (unsigned char)((value >> 8) & 0xFF);
-+ ptr[2] = (unsigned char)((value >> 16) & 0xFF);
-+ ptr[3] = (unsigned char)((value >> 24) & 0xFF);
-+}
-+
-+/* ----------------------------------------------------------------------
-+ * read a uint16_t from buffer.
-+ * network format is defined to be little endian
-+ * -------------------------------------------------------------------- */
-+uint16_t
-+vchi_readbuf_uint16(const void *_ptr)
-+{
-+ const unsigned char *ptr = _ptr;
-+ return ptr[0] | (ptr[1] << 8);
-+}
-+
-+/* ----------------------------------------------------------------------
-+ * write a uint16_t into the buffer.
-+ * network format is defined to be little endian
-+ * -------------------------------------------------------------------- */
-+void
-+vchi_writebuf_uint16(void *_ptr, uint16_t value)
-+{
-+ unsigned char *ptr = _ptr;
-+ ptr[0] = (value >> 0) & 0xFF;
-+ ptr[1] = (value >> 8) & 0xFF;
-+}
-+
-+/***********************************************************
-+ * Name: vchi_service_use
-+ *
-+ * Arguments: const VCHI_SERVICE_HANDLE_T handle
-+ *
-+ * Description: Routine to increment refcount on a service
-+ *
-+ * Returns: void
-+ *
-+ ***********************************************************/
-+int32_t vchi_service_use(const VCHI_SERVICE_HANDLE_T handle)
-+{
-+ int32_t ret = -1;
-+ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
-+ if (service)
-+ ret = vchiq_status_to_vchi(vchiq_use_service(service->handle));
-+ return ret;
-+}
-+EXPORT_SYMBOL(vchi_service_use);
-+
-+/***********************************************************
-+ * Name: vchi_service_release
-+ *
-+ * Arguments: const VCHI_SERVICE_HANDLE_T handle
-+ *
-+ * Description: Routine to decrement refcount on a service
-+ *
-+ * Returns: void
-+ *
-+ ***********************************************************/
-+int32_t vchi_service_release(const VCHI_SERVICE_HANDLE_T handle)
-+{
-+ int32_t ret = -1;
-+ SHIM_SERVICE_T *service = (SHIM_SERVICE_T *)handle;
-+ if (service)
-+ ret = vchiq_status_to_vchi(
-+ vchiq_release_service(service->handle));
-+ return ret;
-+}
-+EXPORT_SYMBOL(vchi_service_release);
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.c b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.c
-new file mode 100644
-index 0000000..c2eefef
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.c
-@@ -0,0 +1,151 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#include "vchiq_util.h"
-+
-+static inline int is_pow2(int i)
-+{
-+ return i && !(i & (i - 1));
-+}
-+
-+int vchiu_queue_init(VCHIU_QUEUE_T *queue, int size)
-+{
-+ WARN_ON(!is_pow2(size));
-+
-+ queue->size = size;
-+ queue->read = 0;
-+ queue->write = 0;
-+
-+ sema_init(&queue->pop, 0);
-+ sema_init(&queue->push, 0);
-+
-+ queue->storage = kzalloc(size * sizeof(VCHIQ_HEADER_T *), GFP_KERNEL);
-+ if (queue->storage == NULL) {
-+ vchiu_queue_delete(queue);
-+ return 0;
-+ }
-+ return 1;
-+}
-+
-+void vchiu_queue_delete(VCHIU_QUEUE_T *queue)
-+{
-+ if (queue->storage != NULL)
-+ kfree(queue->storage);
-+}
-+
-+int vchiu_queue_is_empty(VCHIU_QUEUE_T *queue)
-+{
-+ return queue->read == queue->write;
-+}
-+
-+int vchiu_queue_is_full(VCHIU_QUEUE_T *queue)
-+{
-+ return queue->write == queue->read + queue->size;
-+}
-+
-+void vchiu_queue_push(VCHIU_QUEUE_T *queue, VCHIQ_HEADER_T *header)
-+{
-+ while (queue->write == queue->read + queue->size) {
-+ if (down_interruptible(&queue->pop) != 0) {
-+ flush_signals(current);
-+ }
-+ }
-+
-+ /*
-+ * Write to queue->storage must be visible after read from
-+ * queue->read
-+ */
-+ smp_mb();
-+
-+ queue->storage[queue->write & (queue->size - 1)] = header;
-+
-+ /*
-+ * Write to queue->storage must be visible before write to
-+ * queue->write
-+ */
-+ smp_wmb();
-+
-+ queue->write++;
-+
-+ up(&queue->push);
-+}
-+
-+VCHIQ_HEADER_T *vchiu_queue_peek(VCHIU_QUEUE_T *queue)
-+{
-+ while (queue->write == queue->read) {
-+ if (down_interruptible(&queue->push) != 0) {
-+ flush_signals(current);
-+ }
-+ }
-+
-+ up(&queue->push); // We haven't removed anything from the queue.
-+
-+ /*
-+ * Read from queue->storage must be visible after read from
-+ * queue->write
-+ */
-+ smp_rmb();
-+
-+ return queue->storage[queue->read & (queue->size - 1)];
-+}
-+
-+VCHIQ_HEADER_T *vchiu_queue_pop(VCHIU_QUEUE_T *queue)
-+{
-+ VCHIQ_HEADER_T *header;
-+
-+ while (queue->write == queue->read) {
-+ if (down_interruptible(&queue->push) != 0) {
-+ flush_signals(current);
-+ }
-+ }
-+
-+ /*
-+ * Read from queue->storage must be visible after read from
-+ * queue->write
-+ */
-+ smp_rmb();
-+
-+ header = queue->storage[queue->read & (queue->size - 1)];
-+
-+ /*
-+ * Read from queue->storage must be visible before write to
-+ * queue->read
-+ */
-+ smp_mb();
-+
-+ queue->read++;
-+
-+ up(&queue->pop);
-+
-+ return header;
-+}
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.h b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.h
-new file mode 100644
-index 0000000..7c4bf7c
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_util.h
-@@ -0,0 +1,82 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+
-+#ifndef VCHIQ_UTIL_H
-+#define VCHIQ_UTIL_H
-+
-+#include <linux/types.h>
-+#include <linux/semaphore.h>
-+#include <linux/mutex.h>
-+#include <linux/bitops.h>
-+#include <linux/kthread.h>
-+#include <linux/wait.h>
-+#include <linux/vmalloc.h>
-+#include <linux/jiffies.h>
-+#include <linux/delay.h>
-+#include <linux/string.h>
-+#include <linux/types.h>
-+#include <linux/interrupt.h>
-+#include <linux/random.h>
-+#include <linux/sched.h>
-+#include <linux/ctype.h>
-+#include <linux/uaccess.h>
-+#include <linux/time.h> /* for time_t */
-+#include <linux/slab.h>
-+#include <linux/vmalloc.h>
-+
-+#include "vchiq_if.h"
-+
-+typedef struct {
-+ int size;
-+ int read;
-+ int write;
-+
-+ struct semaphore pop;
-+ struct semaphore push;
-+
-+ VCHIQ_HEADER_T **storage;
-+} VCHIU_QUEUE_T;
-+
-+extern int vchiu_queue_init(VCHIU_QUEUE_T *queue, int size);
-+extern void vchiu_queue_delete(VCHIU_QUEUE_T *queue);
-+
-+extern int vchiu_queue_is_empty(VCHIU_QUEUE_T *queue);
-+extern int vchiu_queue_is_full(VCHIU_QUEUE_T *queue);
-+
-+extern void vchiu_queue_push(VCHIU_QUEUE_T *queue, VCHIQ_HEADER_T *header);
-+
-+extern VCHIQ_HEADER_T *vchiu_queue_peek(VCHIU_QUEUE_T *queue);
-+extern VCHIQ_HEADER_T *vchiu_queue_pop(VCHIU_QUEUE_T *queue);
-+
-+#endif
-+
-diff --git a/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_version.c b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_version.c
-new file mode 100644
-index 0000000..b6bfa21
---- /dev/null
-+++ b/drivers/misc/vc04_services/interface/vchiq_arm/vchiq_version.c
-@@ -0,0 +1,59 @@
-+/**
-+ * Copyright (c) 2010-2012 Broadcom. All rights reserved.
-+ *
-+ * Redistribution and use in source and binary forms, with or without
-+ * modification, are permitted provided that the following conditions
-+ * are met:
-+ * 1. Redistributions of source code must retain the above copyright
-+ * notice, this list of conditions, and the following disclaimer,
-+ * without modification.
-+ * 2. Redistributions in binary form must reproduce the above copyright
-+ * notice, this list of conditions and the following disclaimer in the
-+ * documentation and/or other materials provided with the distribution.
-+ * 3. The names of the above-listed copyright holders may not be used
-+ * to endorse or promote products derived from this software without
-+ * specific prior written permission.
-+ *
-+ * ALTERNATIVELY, this software may be distributed under the terms of the
-+ * GNU General Public License ("GPL") version 2, as published by the Free
-+ * Software Foundation.
-+ *
-+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-+ */
-+#include "vchiq_build_info.h"
-+#include <linux/broadcom/vc_debug_sym.h>
-+
-+VC_DEBUG_DECLARE_STRING_VAR( vchiq_build_hostname, "dc4-arm-01" );
-+VC_DEBUG_DECLARE_STRING_VAR( vchiq_build_version, "9245b4c35b99b3870e1f7dc598c5692b3c66a6f0 (tainted)" );
-+VC_DEBUG_DECLARE_STRING_VAR( vchiq_build_time, __TIME__ );
-+VC_DEBUG_DECLARE_STRING_VAR( vchiq_build_date, __DATE__ );
-+
-+const char *vchiq_get_build_hostname( void )
-+{
-+ return vchiq_build_hostname;
-+}
-+
-+const char *vchiq_get_build_version( void )
-+{
-+ return vchiq_build_version;
-+}
-+
-+const char *vchiq_get_build_date( void )
-+{
-+ return vchiq_build_date;
-+}
-+
-+const char *vchiq_get_build_time( void )
-+{
-+ return vchiq_build_time;
-+}
---
-1.9.1
-
projects / openwrt.git / blobdiff