From 60bdaaaf3446b4237566c6e04855186fc7bd766b Mon Sep 17 00:00:00 2001
From: Imre Kaloz <kaloz@openwrt.org>
Date: Sun, 13 Jul 2008 22:46:45 +0200
Subject: [PATCH] Add support for the ADI Sidewinder

Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
---
 arch/arm/mach-ixp4xx/Kconfig            |   10 ++-
 arch/arm/mach-ixp4xx/Makefile           |    2 +
 arch/arm/mach-ixp4xx/sidewinder-pci.c   |   68 ++++++++++++++
 arch/arm/mach-ixp4xx/sidewinder-setup.c |  151 +++++++++++++++++++++++++++++++
 4 files changed, 230 insertions(+), 1 deletions(-)
 create mode 100644 arch/arm/mach-ixp4xx/sidewinder-pci.c
 create mode 100644 arch/arm/mach-ixp4xx/sidewinder-setup.c

--- a/arch/arm/mach-ixp4xx/Kconfig
+++ b/arch/arm/mach-ixp4xx/Kconfig
@@ -81,6 +81,14 @@
 config MACH_PRONGHORNMETRO
 	def_bool MACH_PRONGHORN
 
+config MACH_SIDEWINDER
+	bool "ADI Sidewinder"
+	select PCI
+	help
+	  Say 'Y' here if you want your kernel to support the ADI 
+	  Engineering Sidewinder board. For more information on this
+	  platform, see http://www.adiengineering.com
+
 config ARCH_IXDP425
 	bool "IXDP425"
 	help
@@ -163,7 +171,7 @@
 #
 config CPU_IXP46X
 	bool
-	depends on MACH_IXDP465
+	depends on MACH_IXDP465 || MACH_SIDEWINDER
 	default y
 
 config CPU_IXP43X
--- a/arch/arm/mach-ixp4xx/Makefile
+++ b/arch/arm/mach-ixp4xx/Makefile
@@ -18,6 +18,7 @@
 obj-pci-$(CONFIG_MACH_WG302V2)		+= wg302v2-pci.o
 obj-pci-$(CONFIG_MACH_FSG)		+= fsg-pci.o
 obj-pci-$(CONFIG_MACH_PRONGHORN)	+= pronghorn-pci.o
+obj-pci-$(CONFIG_MACH_SIDEWINDER)	+= sidewinder-pci.o
 
 obj-y	+= common.o
 
@@ -34,6 +35,7 @@
 obj-$(CONFIG_MACH_WG302V2)	+= wg302v2-setup.o
 obj-$(CONFIG_MACH_FSG)		+= fsg-setup.o
 obj-$(CONFIG_MACH_PRONGHORN)	+= pronghorn-setup.o
+obj-$(CONFIG_MACH_SIDEWINDER)	+= sidewinder-setup.o
 
 obj-$(CONFIG_PCI)		+= $(obj-pci-$(CONFIG_PCI)) common-pci.o
 obj-$(CONFIG_IXP4XX_QMGR)	+= ixp4xx_qmgr.o
--- /dev/null
+++ b/arch/arm/mach-ixp4xx/sidewinder-pci.c
@@ -0,0 +1,68 @@
+/*
+ * arch/arch/mach-ixp4xx/pronghornmetro-pci.c
+ *
+ * PCI setup routines for ADI Engineering Sidewinder
+ *
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ *
+ * based on coyote-pci.c:
+ *	Copyright (C) 2002 Jungo Software Technologies.
+ *	Copyright (C) 2003 MontaVista Softwrae, Inc.
+ *
+ * Maintainer: Imre Kaloz <kaloz@openwrt.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/kernel.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+
+#include <asm/mach-types.h>
+#include <mach/hardware.h>
+#include <asm/irq.h>
+
+#include <asm/mach/pci.h>
+
+void __init sidewinder_pci_preinit(void)
+{
+	set_irq_type(IRQ_IXP4XX_GPIO11, IRQ_TYPE_LEVEL_LOW);
+	set_irq_type(IRQ_IXP4XX_GPIO10, IRQ_TYPE_LEVEL_LOW);
+	set_irq_type(IRQ_IXP4XX_GPIO9, IRQ_TYPE_LEVEL_LOW);
+
+	ixp4xx_pci_preinit();
+}
+
+static int __init sidewinder_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+	if (slot == 1)
+		return IRQ_IXP4XX_GPIO11;
+	else if (slot == 2)
+		return IRQ_IXP4XX_GPIO10;
+	else if (slot == 3)
+		return IRQ_IXP4XX_GPIO9;
+	else
+		return -1;
+}
+
+struct hw_pci sidewinder_pci __initdata = {
+	.nr_controllers	= 1,
+	.preinit	= sidewinder_pci_preinit,
+	.swizzle	= pci_std_swizzle,
+	.setup		= ixp4xx_setup,
+	.scan		= ixp4xx_scan_bus,
+	.map_irq	= sidewinder_map_irq,
+};
+
+int __init sidewinder_pci_init(void)
+{
+	if (machine_is_sidewinder())
+		pci_common_init(&sidewinder_pci);
+	return 0;
+}
+
+subsys_initcall(sidewinder_pci_init);
--- /dev/null
+++ b/arch/arm/mach-ixp4xx/sidewinder-setup.c
@@ -0,0 +1,149 @@
+/*
+ * arch/arm/mach-ixp4xx/sidewinder-setup.c
+ *
+ * Board setup for the ADI Engineering Sidewinder
+ *
+ * Copyright (C) 2008 Imre Kaloz <Kaloz@openwrt.org>
+ *
+ * based on coyote-setup.c:
+ *      Copyright (C) 2003-2005 MontaVista Software, Inc.
+ *
+ * Author: Imre Kaloz <Kaloz@openwrt.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 sidewinder_flash_data = {
+	.map_name	= "cfi_probe",
+	.width		= 2,
+};
+
+static struct resource sidewinder_flash_resource = {
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device sidewinder_flash = {
+	.name		= "IXP4XX-Flash",
+	.id		= 0,
+	.dev		= {
+		.platform_data = &sidewinder_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &sidewinder_flash_resource,
+};
+
+static struct resource sidewinder_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 sidewinder_uart_data[] = {
+	{
+		.mapbase	= IXP4XX_UART1_BASE_PHYS,
+		.membase	= (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
+		.irq		= IRQ_IXP4XX_UART1,
+		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+		.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 | UPF_SKIP_TEST,
+		.iotype		= UPIO_MEM,
+		.regshift	= 2,
+		.uartclk	= IXP4XX_UART_XTAL,
+	},
+	{ },
+};
+
+static struct platform_device sidewinder_uart = {
+	.name		= "serial8250",
+	.id		= PLAT8250_DEV_PLATFORM,
+	.dev		= {
+		.platform_data	= sidewinder_uart_data,
+	},
+	.num_resources	= ARRAY_SIZE(sidewinder_uart_resources),
+	.resource	= sidewinder_uart_resources,
+};
+
+static struct eth_plat_info sidewinder_plat_eth[] = {
+	{
+		.phy		= 5,
+		.rxq		= 3,
+		.txreadyq	= 20,
+	}, {
+		.phy		= IXP4XX_ETH_PHY_MAX_ADDR,
+		.phy_mask	= 0x1e,
+		.rxq		= 4,
+		.txreadyq	= 21,
+	}, {
+		.phy		= 31,
+		.rxq		= 2,
+		.txreadyq	= 19,
+	}
+};
+
+static struct platform_device sidewinder_eth[] = {
+	{
+		.name			= "ixp4xx_eth",
+		.id			= IXP4XX_ETH_NPEB,
+		.dev.platform_data	= sidewinder_plat_eth,
+	}, {
+		.name			= "ixp4xx_eth",
+		.id			= IXP4XX_ETH_NPEC,
+		.dev.platform_data	= sidewinder_plat_eth + 1,
+	}, {
+		.name			= "ixp4xx_eth",
+		.id			= IXP4XX_ETH_NPEA,
+		.dev.platform_data	= sidewinder_plat_eth + 2,
+	}
+};
+
+static struct platform_device *sidewinder_devices[] __initdata = {
+	&sidewinder_flash,
+	&sidewinder_uart,
+	&sidewinder_eth[0],
+	&sidewinder_eth[1],
+	&sidewinder_eth[2],
+};
+
+static void __init sidewinder_init(void)
+{
+	ixp4xx_sys_init();
+
+	sidewinder_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
+	sidewinder_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + SZ_64M - 1;
+
+	*IXP4XX_EXP_CS0 |= IXP4XX_FLASH_WRITABLE;
+	*IXP4XX_EXP_CS1 = *IXP4XX_EXP_CS0;
+
+	platform_add_devices(sidewinder_devices, ARRAY_SIZE(sidewinder_devices));
+}
+
+MACHINE_START(SIDEWINDER, "ADI Engineering Sidewinder")
+	/* Maintainer: Imre Kaloz <kaloz@openwrt.org> */
+	.phys_io	= IXP4XX_PERIPHERAL_BASE_PHYS,
+	.io_pg_offst	= ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xfffc,
+	.map_io		= ixp4xx_map_io,
+	.init_irq	= ixp4xx_init_irq,
+	.timer		= &ixp4xx_timer,
+	.boot_params	= 0x0100,
+	.init_machine	= sidewinder_init,
+MACHINE_END
