--- /dev/null
+This patch adds support for the D-Link DSM-G600 Rev A.
+This is an ARM XScale IXP4xx system relatively similar to
+the NSLU2 and NAS-100D already supported by mainline. An
+important difference is Gigabit Ethernet support using
+the Via Velocity chipset.
+
+This patch is the combined work of Michael Westerhof and
+Alessandro Zummo, with contributions from Michael-Luke
+Jones. This version addresses review comments from rmk
+and Deepak Saxena.
+
+Signed-off-by: Michael-Luke Jones <mlj28@cam.ac.uk>
+Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
+Signed-off-by: Michael Westerhof <mwester@dls.net>
+
+---
+ arch/arm/mach-ixp4xx/Kconfig | 9 +
+ arch/arm/mach-ixp4xx/Makefile | 2
+ arch/arm/mach-ixp4xx/dsmg600-pci.c | 74 +++++++++++++
+ arch/arm/mach-ixp4xx/dsmg600-power.c | 130 ++++++++++++++++++++++++
+ arch/arm/mach-ixp4xx/dsmg600-setup.c | 175 +++++++++++++++++++++++++++++++++
+ include/asm-arm/arch-ixp4xx/dsmg600.h | 57 ++++++++++
+ include/asm-arm/arch-ixp4xx/hardware.h | 1
+ include/asm-arm/arch-ixp4xx/irqs.h | 10 +
+ 8 files changed, 458 insertions(+)
+
+Index: linux-2.6.21.1-armeb/arch/arm/mach-ixp4xx/Kconfig
+===================================================================
+--- linux-2.6.21.1-armeb.orig/arch/arm/mach-ixp4xx/Kconfig
++++ linux-2.6.21.1-armeb/arch/arm/mach-ixp4xx/Kconfig
+@@ -89,6 +89,15 @@
+ NAS 100d device. For more information on this platform,
+ see http://www.nslu2-linux.org/wiki/NAS100d/HomePage
+
++config MACH_DSMG600
++ bool
++ prompt "D-Link DSM-G600 RevA"
++ select PCI
++ help
++ Say 'Y' here if you want your kernel to support D-Link's
++ DSM-G600 RevA device. For more information on this platform,
++ see http://www.nslu2-linux.org/wiki/DSMG600/HomePage
++
+ #
+ # Avila and IXDP share the same source for now. Will change in future
+ #
+Index: linux-2.6.21.1-armeb/arch/arm/mach-ixp4xx/Makefile
+===================================================================
+--- linux-2.6.21.1-armeb.orig/arch/arm/mach-ixp4xx/Makefile
++++ linux-2.6.21.1-armeb/arch/arm/mach-ixp4xx/Makefile
+@@ -12,6 +12,7 @@
+ obj-pci-$(CONFIG_MACH_GTWX5715) += gtwx5715-pci.o
+ obj-pci-$(CONFIG_MACH_NSLU2) += nslu2-pci.o
+ obj-pci-$(CONFIG_MACH_NAS100D) += nas100d-pci.o
++obj-pci-$(CONFIG_MACH_DSMG600) += dsmg600-pci.o
+
+ obj-y += common.o
+
+@@ -22,5 +23,6 @@
+ obj-$(CONFIG_MACH_GTWX5715) += gtwx5715-setup.o
+ obj-$(CONFIG_MACH_NSLU2) += nslu2-setup.o nslu2-power.o
+ obj-$(CONFIG_MACH_NAS100D) += nas100d-setup.o nas100d-power.o
++obj-$(CONFIG_MACH_DSMG600) += dsmg600-setup.o dsmg600-power.o
+
+ obj-$(CONFIG_PCI) += $(obj-pci-$(CONFIG_PCI)) common-pci.o
+Index: linux-2.6.21.1-armeb/arch/arm/mach-ixp4xx/dsmg600-pci.c
+===================================================================
+--- /dev/null
++++ linux-2.6.21.1-armeb/arch/arm/mach-ixp4xx/dsmg600-pci.c
+@@ -0,0 +1,74 @@
++/*
++ * DSM-G600 board-level PCI initialization
++ *
++ * Copyright (C) 2006 Tower Technologies
++ * Author: Alessandro Zummo <a.zummo@towertech.it>
++ *
++ * based on ixdp425-pci.c:
++ * Copyright (C) 2002 Intel Corporation.
++ * Copyright (C) 2003-2004 MontaVista Software, Inc.
++ *
++ * Maintainer: http://www.nslu2-linux.org/
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ *
++ */
++
++#include <linux/pci.h>
++#include <linux/init.h>
++#include <linux/irq.h>
++
++#include <asm/mach/pci.h>
++#include <asm/mach-types.h>
++
++void __init dsmg600_pci_preinit(void)
++{
++ set_irq_type(IRQ_DSMG600_PCI_INTA, IRQT_LOW);
++ set_irq_type(IRQ_DSMG600_PCI_INTB, IRQT_LOW);
++ set_irq_type(IRQ_DSMG600_PCI_INTC, IRQT_LOW);
++ set_irq_type(IRQ_DSMG600_PCI_INTD, IRQT_LOW);
++ set_irq_type(IRQ_DSMG600_PCI_INTE, IRQT_LOW);
++ set_irq_type(IRQ_DSMG600_PCI_INTF, IRQT_LOW);
++
++ ixp4xx_pci_preinit();
++}
++
++static int __init dsmg600_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
++{
++ static int pci_irq_table[DSMG600_PCI_MAX_DEV][DSMG600_PCI_IRQ_LINES] =
++ {
++ { IRQ_DSMG600_PCI_INTE, -1, -1 },
++ { IRQ_DSMG600_PCI_INTA, -1, -1 },
++ { IRQ_DSMG600_PCI_INTB, IRQ_DSMG600_PCI_INTC, IRQ_DSMG600_PCI_INTD },
++ { IRQ_DSMG600_PCI_INTF, -1, -1 },
++ };
++
++ int irq = -1;
++
++ if (slot >= 1 && slot <= DSMG600_PCI_MAX_DEV &&
++ pin >= 1 && pin <= DSMG600_PCI_IRQ_LINES)
++ irq = pci_irq_table[slot-1][pin-1];
++
++ return irq;
++}
++
++struct hw_pci __initdata dsmg600_pci = {
++ .nr_controllers = 1,
++ .preinit = dsmg600_pci_preinit,
++ .swizzle = pci_std_swizzle,
++ .setup = ixp4xx_setup,
++ .scan = ixp4xx_scan_bus,
++ .map_irq = dsmg600_map_irq,
++};
++
++int __init dsmg600_pci_init(void)
++{
++ if (machine_is_dsmg600())
++ pci_common_init(&dsmg600_pci);
++
++ return 0;
++}
++
++subsys_initcall(dsmg600_pci_init);
+Index: linux-2.6.21.1-armeb/arch/arm/mach-ixp4xx/dsmg600-power.c
+===================================================================
+--- /dev/null
++++ linux-2.6.21.1-armeb/arch/arm/mach-ixp4xx/dsmg600-power.c
+@@ -0,0 +1,130 @@
++/*
++ * arch/arm/mach-ixp4xx/dsmg600-power.c
++ *
++ * DSM-G600 Power/Reset driver
++ * Author: Michael Westerhof <mwester@dls.net>
++ *
++ * Based on nslu2-power.c
++ * Copyright (C) 2005 Tower Technologies
++ * Author: Alessandro Zummo <a.zummo@towertech.it>
++ *
++ * which was based on nslu2-io.c
++ * Copyright (C) 2004 Karen Spearel
++ *
++ * Maintainers: http://www.nslu2-linux.org/
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ *
++ */
++
++#include <linux/module.h>
++#include <linux/reboot.h>
++#include <linux/interrupt.h>
++#include <linux/irq.h>
++#include <linux/jiffies.h>
++#include <linux/timer.h>
++
++#include <asm/mach-types.h>
++
++extern void ctrl_alt_del(void);
++
++/* This is used to make sure the power-button pusher is serious. The button
++ * must be held until the value of this counter reaches zero.
++ */
++static volatile int power_button_countdown;
++
++/* Must hold the button down for at least this many counts to be processed */
++#define PBUTTON_HOLDDOWN_COUNT 4 /* 2 secs */
++
++static void dsmg600_power_handler(unsigned long data);
++static DEFINE_TIMER(dsmg600_power_timer, dsmg600_power_handler, 0, 0);
++
++static void dsmg600_power_handler(unsigned long data)
++{
++ /* This routine is called twice per second to check the
++ * state of the power button.
++ */
++
++ if (*IXP4XX_GPIO_GPINR & DSMG600_PB_BM) {
++
++ /* IO Pin is 1 (button pushed) */
++ if (power_button_countdown > 0) {
++ power_button_countdown--;
++ }
++
++ } else {
++
++ /* Done on button release, to allow for auto-power-on mods. */
++ if (power_button_countdown == 0) {
++ /* Signal init to do the ctrlaltdel action, this will bypass
++ * init if it hasn't started and do a kernel_restart.
++ */
++ ctrl_alt_del();
++
++ /* Change the state of the power LED to "blink" */
++ gpio_line_set(DSMG600_LED_PWR_GPIO, IXP4XX_GPIO_LOW);
++ } else {
++ power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
++ }
++ }
++
++ mod_timer(&dsmg600_power_timer, jiffies + msecs_to_jiffies(500));
++}
++
++static irqreturn_t dsmg600_reset_handler(int irq, void *dev_id)
++{
++ /* This is the paper-clip reset, it shuts the machine down directly. */
++ machine_power_off();
++
++ return IRQ_HANDLED;
++}
++
++static int __init dsmg600_power_init(void)
++{
++ if (!(machine_is_dsmg600()))
++ return 0;
++
++ if (request_irq(DSMG600_RB_IRQ, &dsmg600_reset_handler,
++ IRQF_DISABLED | IRQF_TRIGGER_LOW, "DSM-G600 reset button",
++ NULL) < 0) {
++
++ printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
++ DSMG600_RB_IRQ);
++
++ return -EIO;
++ }
++
++ /* The power button on the D-Link DSM-G600 is on GPIO 15, but
++ * it cannot handle interrupts on that GPIO line. So we'll
++ * have to poll it with a kernel timer.
++ */
++
++ /* Make sure that the power button GPIO is set up as an input */
++ gpio_line_config(DSMG600_PB_GPIO, IXP4XX_GPIO_IN);
++
++ /* Set the initial value for the power button IRQ handler */
++ power_button_countdown = PBUTTON_HOLDDOWN_COUNT;
++
++ mod_timer(&dsmg600_power_timer, jiffies + msecs_to_jiffies(500));
++
++ return 0;
++}
++
++static void __exit dsmg600_power_exit(void)
++{
++ if (!(machine_is_dsmg600()))
++ return;
++
++ del_timer_sync(&dsmg600_power_timer);
++
++ free_irq(DSMG600_RB_IRQ, NULL);
++}
++
++module_init(dsmg600_power_init);
++module_exit(dsmg600_power_exit);
++
++MODULE_AUTHOR("Michael Westerhof <mwester@dls.net>");
++MODULE_DESCRIPTION("DSM-G600 Power/Reset driver");
++MODULE_LICENSE("GPL");
+Index: linux-2.6.21.1-armeb/arch/arm/mach-ixp4xx/dsmg600-setup.c
+===================================================================
+--- /dev/null
++++ linux-2.6.21.1-armeb/arch/arm/mach-ixp4xx/dsmg600-setup.c
+@@ -0,0 +1,175 @@
++/*
++ * DSM-G600 board-setup
++ *
++ * Copyright (C) 2006 Tower Technologies
++ * Author: Alessandro Zummo <a.zummo@towertech.it>
++ *
++ * based ixdp425-setup.c:
++ * Copyright (C) 2003-2004 MontaVista Software, Inc.
++ *
++ * Author: Alessandro Zummo <a.zummo@towertech.it>
++ * Maintainers: http://www.nslu2-linux.org/
++ */
++
++#include <linux/kernel.h>
++#include <linux/serial.h>
++#include <linux/serial_8250.h>
++
++#include <asm/mach-types.h>
++#include <asm/mach/arch.h>
++#include <asm/mach/flash.h>
++
++static struct flash_platform_data dsmg600_flash_data = {
++ .map_name = "cfi_probe",
++ .width = 2,
++};
++
++static struct resource dsmg600_flash_resource = {
++ .flags = IORESOURCE_MEM,
++};
++
++static struct platform_device dsmg600_flash = {
++ .name = "IXP4XX-Flash",
++ .id = 0,
++ .dev.platform_data = &dsmg600_flash_data,
++ .num_resources = 1,
++ .resource = &dsmg600_flash_resource,
++};
++
++static struct ixp4xx_i2c_pins dsmg600_i2c_gpio_pins = {
++ .sda_pin = DSMG600_SDA_PIN,
++ .scl_pin = DSMG600_SCL_PIN,
++};
++
++static struct platform_device dsmg600_i2c_controller = {
++ .name = "IXP4XX-I2C",
++ .id = 0,
++ .dev.platform_data = &dsmg600_i2c_gpio_pins,
++};
++
++#ifdef CONFIG_LEDS_CLASS
++static struct resource dsmg600_led_resources[] = {
++ {
++ .name = "power",
++ .start = DSMG600_LED_PWR_GPIO,
++ .end = DSMG600_LED_PWR_GPIO,
++ .flags = IXP4XX_GPIO_HIGH,
++ },
++ {
++ .name = "wlan",
++ .start = DSMG600_LED_WLAN_GPIO,
++ .end = DSMG600_LED_WLAN_GPIO,
++ .flags = IXP4XX_GPIO_LOW,
++ },
++};
++
++static struct platform_device dsmg600_leds = {
++ .name = "IXP4XX-GPIO-LED",
++ .id = -1,
++ .num_resources = ARRAY_SIZE(dsmg600_led_resources),
++ .resource = dsmg600_led_resources,
++};
++#endif
++
++static struct resource dsmg600_uart_resources[] = {
++ {
++ .start = IXP4XX_UART1_BASE_PHYS,
++ .end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
++ .flags = IORESOURCE_MEM,
++ },
++ {
++ .start = IXP4XX_UART2_BASE_PHYS,
++ .end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
++ .flags = IORESOURCE_MEM,
++ }
++};
++
++static struct plat_serial8250_port dsmg600_uart_data[] = {
++ {
++ .mapbase = IXP4XX_UART1_BASE_PHYS,
++ .membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
++ .irq = IRQ_IXP4XX_UART1,
++ .flags = UPF_BOOT_AUTOCONF,
++ .iotype = UPIO_MEM,
++ .regshift = 2,
++ .uartclk = IXP4XX_UART_XTAL,
++ },
++ {
++ .mapbase = IXP4XX_UART2_BASE_PHYS,
++ .membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
++ .irq = IRQ_IXP4XX_UART2,
++ .flags = UPF_BOOT_AUTOCONF,
++ .iotype = UPIO_MEM,
++ .regshift = 2,
++ .uartclk = IXP4XX_UART_XTAL,
++ },
++ { }
++};
++
++static struct platform_device dsmg600_uart = {
++ .name = "serial8250",
++ .id = PLAT8250_DEV_PLATFORM,
++ .dev.platform_data = dsmg600_uart_data,
++ .num_resources = ARRAY_SIZE(dsmg600_uart_resources),
++ .resource = dsmg600_uart_resources,
++};
++
++static struct platform_device *dsmg600_devices[] __initdata = {
++ &dsmg600_i2c_controller,
++ &dsmg600_flash,
++};
++
++static void dsmg600_power_off(void)
++{
++ /* enable the pwr cntl gpio */
++ gpio_line_config(DSMG600_PO_GPIO, IXP4XX_GPIO_OUT);
++
++ /* poweroff */
++ gpio_line_set(DSMG600_PO_GPIO, IXP4XX_GPIO_HIGH);
++}
++
++static void __init dsmg600_init(void)
++{
++ ixp4xx_sys_init();
++
++ /* Make sure that GPIO14 and GPIO15 are not used as clocks */
++ *IXP4XX_GPIO_GPCLKR = 0;
++
++ dsmg600_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
++ dsmg600_flash_resource.end =
++ IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
++
++ pm_power_off = dsmg600_power_off;
++
++ /* The UART is required on the DSM-G600 (Redboot cannot use the
++ * NIC) -- do it here so that it does *not* get removed if
++ * platform_add_devices fails!
++ */
++ (void)platform_device_register(&dsmg600_uart);
++
++ platform_add_devices(dsmg600_devices, ARRAY_SIZE(dsmg600_devices));
++
++#ifdef CONFIG_LEDS_CLASS
++ /* We don't care whether or not this works. */
++ (void)platform_device_register(&dsmg600_leds);
++#endif
++}
++
++static void __init dsmg600_fixup(struct machine_desc *desc,
++ struct tag *tags, char **cmdline, struct meminfo *mi)
++{
++ /* The xtal on this machine is non-standard. */
++ ixp4xx_timer_freq = DSMG600_FREQ;
++}
++
++MACHINE_START(DSMG600, "D-Link DSM-G600 RevA")
++ /* Maintainer: www.nslu2-linux.org */
++ .phys_io = IXP4XX_PERIPHERAL_BASE_PHYS,
++ .io_pg_offst = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
++ .boot_params = 0x00000100,
++ .fixup = dsmg600_fixup,
++ .map_io = ixp4xx_map_io,
++ .init_irq = ixp4xx_init_irq,
++ .timer = &ixp4xx_timer,
++ .init_machine = dsmg600_init,
++MACHINE_END
+Index: linux-2.6.21.1-armeb/include/asm-arm/arch-ixp4xx/dsmg600.h
+===================================================================
+--- /dev/null
++++ linux-2.6.21.1-armeb/include/asm-arm/arch-ixp4xx/dsmg600.h
+@@ -0,0 +1,57 @@
++/*
++ * DSM-G600 platform specific definitions
++ *
++ * Copyright (C) 2006 Tower Technologies
++ * Author: Alessandro Zummo <a.zummo@towertech.it>
++ *
++ * based on ixdp425.h:
++ * Copyright 2004 (C) MontaVista, Software, Inc.
++ *
++ * This file is licensed under the terms of the GNU General Public
++ * License version 2. This program is licensed "as is" without any
++ * warranty of any kind, whether express or implied.
++ */
++
++#ifndef __ASM_ARCH_HARDWARE_H__
++#error "Do not include this directly, instead #include <asm/hardware.h>"
++#endif
++
++#define DSMG600_SDA_PIN 5
++#define DSMG600_SCL_PIN 4
++
++/*
++ * DSMG600 PCI IRQs
++ */
++#define DSMG600_PCI_MAX_DEV 4
++#define DSMG600_PCI_IRQ_LINES 3
++
++
++/* PCI controller GPIO to IRQ pin mappings */
++#define DSMG600_PCI_INTA_PIN 11
++#define DSMG600_PCI_INTB_PIN 10
++#define DSMG600_PCI_INTC_PIN 9
++#define DSMG600_PCI_INTD_PIN 8
++#define DSMG600_PCI_INTE_PIN 7
++#define DSMG600_PCI_INTF_PIN 6
++
++/* DSM-G600 Timer Setting */
++#define DSMG600_FREQ 66000000
++
++/* Buttons */
++
++#define DSMG600_PB_GPIO 15 /* power button */
++#define DSMG600_PB_BM (1L << DSMG600_PB_GPIO)
++
++#define DSMG600_RB_GPIO 3 /* reset button */
++
++#define DSMG600_RB_IRQ IRQ_IXP4XX_GPIO3
++
++#define DSMG600_PO_GPIO 2 /* power off */
++
++/* LEDs */
++
++#define DSMG600_LED_PWR_GPIO 0
++#define DSMG600_LED_PWR_BM (1L << DSMG600_LED_PWR_GPIO)
++
++#define DSMG600_LED_WLAN_GPIO 14
++#define DSMG600_LED_WLAN_BM (1L << DSMG600_LED_WLAN_GPIO)
+Index: linux-2.6.21.1-armeb/include/asm-arm/arch-ixp4xx/hardware.h
+===================================================================
+--- linux-2.6.21.1-armeb.orig/include/asm-arm/arch-ixp4xx/hardware.h
++++ linux-2.6.21.1-armeb/include/asm-arm/arch-ixp4xx/hardware.h
+@@ -47,5 +47,6 @@
+ #include "prpmc1100.h"
+ #include "nslu2.h"
+ #include "nas100d.h"
++#include "dsmg600.h"
+
+ #endif /* _ASM_ARCH_HARDWARE_H */
+Index: linux-2.6.21.1-armeb/include/asm-arm/arch-ixp4xx/irqs.h
+===================================================================
+--- linux-2.6.21.1-armeb.orig/include/asm-arm/arch-ixp4xx/irqs.h
++++ linux-2.6.21.1-armeb/include/asm-arm/arch-ixp4xx/irqs.h
+@@ -118,4 +118,14 @@
+ #define IRQ_NAS100D_PCI_INTD IRQ_IXP4XX_GPIO8
+ #define IRQ_NAS100D_PCI_INTE IRQ_IXP4XX_GPIO7
+
++/*
++ * D-Link DSM-G600 RevA board IRQs
++ */
++#define IRQ_DSMG600_PCI_INTA IRQ_IXP4XX_GPIO11
++#define IRQ_DSMG600_PCI_INTB IRQ_IXP4XX_GPIO10
++#define IRQ_DSMG600_PCI_INTC IRQ_IXP4XX_GPIO9
++#define IRQ_DSMG600_PCI_INTD IRQ_IXP4XX_GPIO8
++#define IRQ_DSMG600_PCI_INTE IRQ_IXP4XX_GPIO7
++#define IRQ_DSMG600_PCI_INTF IRQ_IXP4XX_GPIO6
++
+ #endif
projects / openwrt.git / blobdiff