+++ /dev/null
-/*****************************************************************************
- ** FILE NAME : ifxhcd_queue.c
- ** PROJECT : IFX USB sub-system V3
- ** MODULES : IFX USB sub-system Host and Device driver
- ** SRC VERSION : 1.0
- ** DATE : 1/Jan/2009
- ** AUTHOR : Chen, Howard
- ** DESCRIPTION : This file contains the functions to manage Queue Heads and Queue
- ** Transfer Descriptors.
- *****************************************************************************/
-
-/*!
- \file ifxhcd_queue.c
- \ingroup IFXUSB_DRIVER_V3
- \brief This file contains the functions to manage Queue Heads and Queue
- Transfer Descriptors.
-*/
-#include <linux/version.h>
-#include "ifxusb_version.h"
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/init.h>
-#include <linux/device.h>
-#include <linux/errno.h>
-#include <linux/list.h>
-#include <linux/interrupt.h>
-#include <linux/string.h>
-
-#include "ifxusb_plat.h"
-#include "ifxusb_regs.h"
-#include "ifxusb_cif.h"
-#include "ifxhcd.h"
-
-#ifdef __EPQD_DESTROY_TIMEOUT__
- #define epqh_self_destroy_timeout 5
- static void eqph_destroy_func(unsigned long _ptr)
- {
- ifxhcd_epqh_t *epqh=(ifxhcd_epqh_t *)_ptr;
- if(epqh)
- {
- ifxhcd_epqh_free (epqh);
- }
- }
-#endif
-
-#define SCHEDULE_SLOP 10
-
-/*!
- \brief This function allocates and initializes a EPQH.
-
- \param _ifxhcd The HCD state structure for the USB Host controller.
- \param[in] _urb Holds the information about the device/endpoint that we need
- to initialize the EPQH.
-
- \return Returns pointer to the newly allocated EPQH, or NULL on error.
- */
-ifxhcd_epqh_t *ifxhcd_epqh_create (ifxhcd_hcd_t *_ifxhcd, struct urb *_urb)
-{
- ifxhcd_epqh_t *epqh;
-
- hprt0_data_t hprt0;
- struct usb_host_endpoint *sysep = ifxhcd_urb_to_endpoint(_urb);
-
- /* Allocate memory */
-// epqh=(ifxhcd_epqh_t *) kmalloc (sizeof(ifxhcd_epqh_t), GFP_KERNEL);
- epqh=(ifxhcd_epqh_t *) kmalloc (sizeof(ifxhcd_epqh_t), GFP_ATOMIC);
-
- if(epqh == NULL)
- return NULL;
-
- memset (epqh, 0, sizeof (ifxhcd_epqh_t));
-
- epqh->sysep=sysep;
-
- /* Initialize EPQH */
- switch (usb_pipetype(_urb->pipe))
- {
- case PIPE_CONTROL : epqh->ep_type = IFXUSB_EP_TYPE_CTRL; break;
- case PIPE_BULK : epqh->ep_type = IFXUSB_EP_TYPE_BULK; break;
- case PIPE_ISOCHRONOUS: epqh->ep_type = IFXUSB_EP_TYPE_ISOC; break;
- case PIPE_INTERRUPT : epqh->ep_type = IFXUSB_EP_TYPE_INTR; break;
- }
-
- //epqh->data_toggle = IFXUSB_HC_PID_DATA0;
-
- epqh->mps = usb_maxpacket(_urb->dev, _urb->pipe, !(usb_pipein(_urb->pipe)));
-
- hprt0.d32 = ifxusb_read_hprt0 (&_ifxhcd->core_if);
-
- INIT_LIST_HEAD(&epqh->urbd_list);
- INIT_LIST_HEAD(&epqh->epqh_list_entry);
- epqh->hc = NULL;
-
- epqh->dump_buf = ifxusb_alloc_buf(epqh->mps, 0);
-
- /* FS/LS Enpoint on HS Hub
- * NOT virtual root hub */
- epqh->need_split = 0;
- epqh->pkt_count_limit=0;
- if(epqh->ep_type == IFXUSB_EP_TYPE_BULK && !(usb_pipein(_urb->pipe)) )
- epqh->pkt_count_limit=4;
- if (hprt0.b.prtspd == IFXUSB_HPRT0_PRTSPD_HIGH_SPEED &&
- ((_urb->dev->speed == USB_SPEED_LOW) ||
- (_urb->dev->speed == USB_SPEED_FULL)) &&
- (_urb->dev->tt) && (_urb->dev->tt->hub->devnum != 1))
- {
- IFX_DEBUGPL(DBG_HCD, "QH init: EP %d: TT found at hub addr %d, for port %d\n",
- usb_pipeendpoint(_urb->pipe), _urb->dev->tt->hub->devnum,
- _urb->dev->ttport);
- epqh->need_split = 1;
- epqh->pkt_count_limit=1;
- }
-
- if (epqh->ep_type == IFXUSB_EP_TYPE_INTR ||
- epqh->ep_type == IFXUSB_EP_TYPE_ISOC)
- {
- /* Compute scheduling parameters once and save them. */
- epqh->interval = _urb->interval;
- if(epqh->need_split)
- epqh->interval *= 8;
- }
-
- epqh->period_counter=0;
- epqh->is_active=0;
-
- #ifdef __EPQD_DESTROY_TIMEOUT__
- /* Start a timer for this transfer. */
- init_timer(&epqh->destroy_timer);
- epqh->destroy_timer.function = eqph_destroy_func;
- epqh->destroy_timer.data = (unsigned long)(epqh);
- #endif
-
- #ifdef __DEBUG__
- IFX_DEBUGPL(DBG_HCD , "IFXUSB HCD EPQH Initialized\n");
- IFX_DEBUGPL(DBG_HCDV, "IFXUSB HCD EPQH - epqh = %p\n", epqh);
- IFX_DEBUGPL(DBG_HCDV, "IFXUSB HCD EPQH - Device Address = %d EP %d, %s\n",
- _urb->dev->devnum,
- usb_pipeendpoint(_urb->pipe),
- usb_pipein(_urb->pipe) == USB_DIR_IN ? "IN" : "OUT");
- IFX_DEBUGPL(DBG_HCDV, "IFXUSB HCD EPQH - Speed = %s\n",
- ({ char *speed; switch (_urb->dev->speed) {
- case USB_SPEED_LOW: speed = "low" ; break;
- case USB_SPEED_FULL: speed = "full"; break;
- case USB_SPEED_HIGH: speed = "high"; break;
- default: speed = "?"; break;
- }; speed;}));
- IFX_DEBUGPL(DBG_HCDV, "IFXUSB HCD EPQH - Type = %s\n",
- ({
- char *type; switch (epqh->ep_type)
- {
- case IFXUSB_EP_TYPE_ISOC: type = "isochronous"; break;
- case IFXUSB_EP_TYPE_INTR: type = "interrupt" ; break;
- case IFXUSB_EP_TYPE_CTRL: type = "control" ; break;
- case IFXUSB_EP_TYPE_BULK: type = "bulk" ; break;
- default: type = "?"; break;
- };
- type;
- }));
- if (epqh->ep_type == IFXUSB_EP_TYPE_INTR)
- IFX_DEBUGPL(DBG_HCDV, "IFXUSB HCD EPQH - interval = %d\n", epqh->interval);
- #endif
-
- return epqh;
-}
-
-
-
-
-
-
-/*!
- \brief Free the EPQH. EPQH should already be removed from a list.
- URBD list should already be empty if called from URB Dequeue.
-
- \param[in] _epqh The EPQH to free.
- */
-void ifxhcd_epqh_free (ifxhcd_epqh_t *_epqh)
-{
- unsigned long flags;
-
- if(_epqh->sysep) _epqh->sysep->hcpriv=NULL;
- _epqh->sysep=NULL;
-
- if(!_epqh)
- return;
-
- /* Free each QTD in the QTD list */
- local_irq_save (flags);
- if (!list_empty(&_epqh->urbd_list))
- IFX_WARN("%s() invalid epqh state\n",__func__);
-
- #if defined(__UNALIGNED_BUFFER_ADJ__)
- if(_epqh->aligned_buf)
- ifxusb_free_buf(_epqh->aligned_buf);
- if(_epqh->aligned_setup)
- ifxusb_free_buf(_epqh->aligned_setup);
- #endif
-
- if (!list_empty(&_epqh->epqh_list_entry))
- list_del_init(&_epqh->epqh_list_entry);
-
- #ifdef __EPQD_DESTROY_TIMEOUT__
- del_timer(&_epqh->destroy_timer);
- #endif
- if(_epqh->dump_buf)
- ifxusb_free_buf(_epqh->dump_buf);
- _epqh->dump_buf=0;
-
-
- kfree (_epqh);
- local_irq_restore (flags);
-}
-
-/*!
- \brief This function adds a EPQH to
-
- \return 0 if successful, negative error code otherwise.
- */
-void ifxhcd_epqh_ready(ifxhcd_hcd_t *_ifxhcd, ifxhcd_epqh_t *_epqh)
-{
- unsigned long flags;
- local_irq_save(flags);
- if (list_empty(&_epqh->epqh_list_entry))
- {
- #ifdef __EN_ISOC__
- if (_epqh->ep_type == IFXUSB_EP_TYPE_ISOC)
- list_add_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_isoc_ready);
- else
- #endif
- if(_epqh->ep_type == IFXUSB_EP_TYPE_INTR)
- list_add_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_intr_ready);
- else
- list_add_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_np_ready);
- _epqh->is_active=0;
- }
- else if(!_epqh->is_active)
- {
- #ifdef __EN_ISOC__
- if (_epqh->ep_type == IFXUSB_EP_TYPE_ISOC)
- list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_isoc_ready);
- else
- #endif
- if(_epqh->ep_type == IFXUSB_EP_TYPE_INTR)
- list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_intr_ready);
- else
- list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_np_ready);
- }
- #ifdef __EPQD_DESTROY_TIMEOUT__
- del_timer(&_epqh->destroy_timer);
- #endif
- local_irq_restore(flags);
-}
-
-void ifxhcd_epqh_active(ifxhcd_hcd_t *_ifxhcd, ifxhcd_epqh_t *_epqh)
-{
- unsigned long flags;
- local_irq_save(flags);
- if (list_empty(&_epqh->epqh_list_entry))
- IFX_WARN("%s() invalid epqh state\n",__func__);
- #ifdef __EN_ISOC__
- if (_epqh->ep_type == IFXUSB_EP_TYPE_ISOC)
- list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_isoc_active);
- else
- #endif
- if(_epqh->ep_type == IFXUSB_EP_TYPE_INTR)
- list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_intr_active);
- else
- list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_np_active);
- _epqh->is_active=1;
- #ifdef __EPQD_DESTROY_TIMEOUT__
- del_timer(&_epqh->destroy_timer);
- #endif
- local_irq_restore(flags);
-}
-
-void ifxhcd_epqh_idle(ifxhcd_hcd_t *_ifxhcd, ifxhcd_epqh_t *_epqh)
-{
- unsigned long flags;
- local_irq_save(flags);
-
- if (list_empty(&_epqh->urbd_list))
- {
- if(_epqh->ep_type == IFXUSB_EP_TYPE_ISOC || _epqh->ep_type == IFXUSB_EP_TYPE_INTR)
- {
- list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_stdby);
- }
- else
- {
- list_del_init(&_epqh->epqh_list_entry);
- #ifdef __EPQD_DESTROY_TIMEOUT__
- del_timer(&_epqh->destroy_timer);
- _epqh->destroy_timer.expires = jiffies + (HZ*epqh_self_destroy_timeout);
- add_timer(&_epqh->destroy_timer );
- #endif
- }
- }
- else
- {
- #ifdef __EN_ISOC__
- if (_epqh->ep_type == IFXUSB_EP_TYPE_ISOC)
- list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_isoc_ready);
- else
- #endif
- if(_epqh->ep_type == IFXUSB_EP_TYPE_INTR)
- list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_intr_ready);
- else
- list_move_tail(&_epqh->epqh_list_entry, &_ifxhcd->epqh_np_ready);
- }
- _epqh->is_active=0;
- local_irq_restore(flags);
-}
-
-
-void ifxhcd_epqh_idle_periodic(ifxhcd_epqh_t *_epqh)
-{
- unsigned long flags;
- if(_epqh->ep_type != IFXUSB_EP_TYPE_ISOC && _epqh->ep_type != IFXUSB_EP_TYPE_INTR)
- return;
-
- local_irq_save(flags);
-
- if (list_empty(&_epqh->epqh_list_entry))
- IFX_WARN("%s() invalid epqh state\n",__func__);
- if (!list_empty(&_epqh->urbd_list))
- IFX_WARN("%s() invalid epqh state(not empty)\n",__func__);
-
- _epqh->is_active=0;
- list_del_init(&_epqh->epqh_list_entry);
- #ifdef __EPQD_DESTROY_TIMEOUT__
- del_timer(&_epqh->destroy_timer);
- _epqh->destroy_timer.expires = jiffies + (HZ*epqh_self_destroy_timeout);
- add_timer(&_epqh->destroy_timer );
- #endif
-
- local_irq_restore(flags);
-}
-
-
-int ifxhcd_urbd_create (ifxhcd_hcd_t *_ifxhcd,struct urb *_urb)
-{
- ifxhcd_urbd_t *urbd;
- struct usb_host_endpoint *sysep;
- ifxhcd_epqh_t *epqh;
- unsigned long flags;
- /* == AVM/WK 20100714 retval correctly initialized ==*/
- int retval = -ENOMEM;
-
- /*== AVM/BC 20100630 - Spinlock ==*/
- //local_irq_save(flags);
- SPIN_LOCK_IRQSAVE(&_ifxhcd->lock, flags);
-
-// urbd = (ifxhcd_urbd_t *) kmalloc (sizeof(ifxhcd_urbd_t), GFP_KERNEL);
- urbd = (ifxhcd_urbd_t *) kmalloc (sizeof(ifxhcd_urbd_t), GFP_ATOMIC);
- if (urbd != NULL) /* Initializes a QTD structure.*/
- {
- retval = 0;
- memset (urbd, 0, sizeof (ifxhcd_urbd_t));
-
- sysep = ifxhcd_urb_to_endpoint(_urb);
- epqh = (ifxhcd_epqh_t *)sysep->hcpriv;
- if (epqh == NULL)
- {
- epqh = ifxhcd_epqh_create (_ifxhcd, _urb);
- if (epqh == NULL)
- {
- retval = -ENOSPC;
- kfree(urbd);
- //local_irq_restore (flags);
- SPIN_UNLOCK_IRQRESTORE(&_ifxhcd->lock, flags);
- return retval;
- }
- sysep->hcpriv = epqh;
- }
-
- INIT_LIST_HEAD(&urbd->urbd_list_entry);
-
- /*== AVM/BC 20100630 - 2.6.28 needs HCD link/unlink URBs ==*/
- retval = usb_hcd_link_urb_to_ep(ifxhcd_to_syshcd(_ifxhcd), _urb);
-
- if (unlikely(retval)){
- kfree(urbd);
- kfree(epqh);
- SPIN_UNLOCK_IRQRESTORE(&_ifxhcd->lock, flags);
- return retval;
- }
-
- list_add_tail(&urbd->urbd_list_entry, &epqh->urbd_list);
- urbd->urb = _urb;
- _urb->hcpriv = urbd;
-
- urbd->epqh=epqh;
- urbd->is_in=usb_pipein(_urb->pipe) ? 1 : 0;;
-
- urbd->xfer_len=_urb->transfer_buffer_length;
-#define URB_NO_SETUP_DMA_MAP 0
-
- if(urbd->xfer_len>0)
- {
- if(_urb->transfer_flags && URB_NO_TRANSFER_DMA_MAP)
- urbd->xfer_buff = (uint8_t *) (KSEG1ADDR((uint32_t *)_urb->transfer_dma));
- else
- urbd->xfer_buff = (uint8_t *) _urb->transfer_buffer;
- }
- if(epqh->ep_type == IFXUSB_EP_TYPE_CTRL)
- {
- if(_urb->transfer_flags && URB_NO_SETUP_DMA_MAP)
- urbd->setup_buff = (uint8_t *) (KSEG1ADDR((uint32_t *)_urb->setup_dma));
- else
- urbd->setup_buff = (uint8_t *) _urb->setup_packet;
- }
- }
- //local_irq_restore (flags);
- SPIN_UNLOCK_IRQRESTORE(&_ifxhcd->lock, flags);
- return retval;
-}
-
projects / openwrt.git / blobdiff