[ARM] Add support for ENP-2611 platform

Signed-off-by: Deepak Saxena <dsaxena@plexity.net>

arch/arm/mach-ixp2000/Kconfig

@@ -9,6 +9,13 @@ menu "Intel IXP2400/2800 Implementation Options"
 
 comment "IXP2400/2800 Platforms"
 
+config ARCH_ENP2611
+	bool "Support Radisys ENP-2611"
+	help
+	  Say 'Y' here if you want your kernel to support the Radisys
+	  ENP2611 PCI network processing card. For more information on
+	  this card, see Documentation/arm/ENP2611.
+
 config ARCH_IXDP2400
 	bool "Support Intel IXDP2400"
 	help

arch/arm/mach-ixp2000/Makefile

@@ -6,6 +6,7 @@ obj-m			:=
 obj-n			:=
 obj-			:=
 
+obj-$(CONFIG_ARCH_ENP2611)	+= enp2611.o
 obj-$(CONFIG_ARCH_IXDP2400)	+= ixdp2400.o
 obj-$(CONFIG_ARCH_IXDP2800)	+= ixdp2800.o
 obj-$(CONFIG_ARCH_IXDP2X00)	+= ixdp2x00.o

arch/arm/mach-ixp2000/enp2611.c

+/*
+ * arch/arm/mach-ixp2000/enp2611.c
+ *
+ * Radisys ENP-2611 support.
+ *
+ * Created 2004 by Lennert Buytenhek from the ixdp2x01 code.  The
+ * original version carries the following notices:
+ *
+ * Original Author: Andrzej Mialwoski <andrzej.mialwoski@intel.com>
+ * Maintainer: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright (C) 2002-2003 Intel Corp.
+ * Copyright (C) 2003-2004 MontaVista Software, Inc.
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/bitops.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/serial.h>
+#include <linux/tty.h>
+#include <linux/serial_core.h>
+#include <linux/device.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <asm/system.h>
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+
+#include <asm/mach/pci.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/time.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/flash.h>
+
+/*************************************************************************
+ * ENP-2611 timer tick configuration
+ *************************************************************************/
+static void __init enp2611_init_time(void)
+{
+	ixp2000_init_time(50 * 1000 * 1000);
+}
+
+
+/*************************************************************************
+ * ENP-2611 PCI
+ *************************************************************************/
+static int enp2611_pci_setup(int nr, struct pci_sys_data *sys)
+{
+	sys->mem_offset = 0xe0000000;
+	ixp2000_pci_setup(nr, sys);
+	return 1;
+}
+
+static void __init enp2611_pci_preinit(void)
+{
+	ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00100000);
+	ixp2000_pci_preinit();
+}
+
+static inline int enp2611_pci_valid_device(struct pci_bus *bus,
+						unsigned int devfn)
+{
+	/* The 82559 ethernet controller appears at both PCI:1:0:0 and
+	 * PCI:1:2:0, so let's pretend the second one isn't there.
+	 */
+	if (bus->number == 0x01 && devfn == 0x10)
+		return 0;
+
+	return 1;
+}
+
+static int enp2611_pci_read_config(struct pci_bus *bus, unsigned int devfn,
+					int where, int size, u32 *value)
+{
+	if (enp2611_pci_valid_device(bus, devfn))
+		return ixp2000_pci_read_config(bus, devfn, where, size, value);
+
+	return PCIBIOS_DEVICE_NOT_FOUND;
+}
+
+static int enp2611_pci_write_config(struct pci_bus *bus, unsigned int devfn,
+					int where, int size, u32 value)
+{
+	if (enp2611_pci_valid_device(bus, devfn))
+		return ixp2000_pci_write_config(bus, devfn, where, size, value);
+
+	return PCIBIOS_DEVICE_NOT_FOUND;
+}
+
+static struct pci_ops enp2611_pci_ops = {
+	.read   = enp2611_pci_read_config,
+	.write  = enp2611_pci_write_config
+};
+
+static struct pci_bus * __init enp2611_pci_scan_bus(int nr,
+						struct pci_sys_data *sys)
+{
+	return pci_scan_bus(sys->busnr, &enp2611_pci_ops, sys);
+}
+
+static int __init enp2611_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+	int irq;
+
+	if (dev->bus->number == 0x00 && PCI_SLOT(dev->devfn) == 0x01) {
+		/* 21555 non-transparent bridge.  */
+		irq = IRQ_IXP2000_PCIB;
+	} else if (dev->bus->number == 0x01 && PCI_SLOT(dev->devfn) == 0x00) {
+		/* 82559 ethernet.  */
+		irq = IRQ_IXP2000_PCIA;
+	} else {
+		printk(KERN_INFO "enp2611_pci_map_irq for unknown device\n");
+		irq = IRQ_IXP2000_PCI;
+	}
+
+	printk(KERN_INFO "Assigned IRQ %d to PCI:%d:%d:%d\n", irq,
+		dev->bus->number, PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
+
+	return irq;
+}
+
+struct hw_pci enp2611_pci __initdata = {
+	.nr_controllers	= 1,
+	.setup		= enp2611_pci_setup,
+	.preinit	= enp2611_pci_preinit,
+	.scan		= enp2611_pci_scan_bus,
+	.map_irq	= enp2611_pci_map_irq,
+};
+
+int __init enp2611_pci_init(void)
+{
+	pci_common_init(&enp2611_pci);
+	return 0;
+}
+
+subsys_initcall(enp2611_pci_init);
+
+
+/*************************************************************************
+ * ENP-2611 Machine Intialization
+ *************************************************************************/
+static struct flash_platform_data enp2611_flash_platform_data = {
+	.map_name	= "cfi_probe",
+	.width		= 1,
+};
+
+static struct ixp2000_flash_data enp2611_flash_data = {
+	.platform_data	= &enp2611_flash_platform_data,
+	.nr_banks	= 1
+};
+
+static struct resource enp2611_flash_resource = {
+	.start		= 0xc4000000,
+	.end		= 0xc4000000 + 0x00ffffff,
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device enp2611_flash = {
+	.name		= "IXP2000-Flash",
+	.id		= 0,
+	.dev		= {
+		.platform_data = &enp2611_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &enp2611_flash_resource,
+};
+
+static struct platform_device *enp2611_devices[] __initdata = {
+	&enp2611_flash
+};
+
+static void __init enp2611_init_machine(void)
+{
+	platform_add_devices(enp2611_devices, ARRAY_SIZE(enp2611_devices));
+}
+
+
+#ifdef CONFIG_ARCH_ENP2611
+MACHINE_START(ENP2611, "Radisys ENP-2611 PCI network processor board")
+	MAINTAINER("Lennert Buytenhek <buytenh@wantstofly.org>")
+	BOOT_MEM(0x00000000, IXP2000_UART_PHYS_BASE, IXP2000_UART_VIRT_BASE)
+	BOOT_PARAMS(0x00000100)
+	MAPIO(ixp2000_map_io)
+	INITIRQ(ixp2000_init_irq)
+	INITTIME(enp2611_init_time)
+	INIT_MACHINE(enp2611_init_machine)
+MACHINE_END
+#endif
+
+

include/asm-arm/arch-ixp2000/enp2611.h

+/*
+ * include/asm-arm/arch-ixp2000/enp2611.h
+ *
+ * Register and other defines for Radisys ENP-2611
+ *
+ * Created 2004 by Lennert Buytenhek from the ixdp2x01 code.  The
+ * original version carries the following notices:
+ *
+ * Original Author: Naeem Afzal <naeem.m.afzal@intel.com>
+ * Maintainer: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright (C) 2002 Intel Corp.
+ * Copyright (C) 2003-2004 MontaVista Software, Inc.
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ */
+
+#ifndef __ENP2611_H
+#define __ENP2611_H
+
+#define ENP2611_GPIO_SCL	0x07
+#define ENP2611_GPIO_SDA	0x06
+
+
+#endif

include/asm-arm/arch-ixp2000/hardware.h

@@ -37,6 +37,7 @@
 /*
  * Platform-specific bits
  */
+#include "enp2611.h"		/* ENP-2611 */
 #include "ixdp2x00.h"		/* IXDP2400/2800 */
 #include "ixdp2x01.h"		/* IXDP2401/2801 */
 

include/asm-arm/arch-ixp2000/platform.h

@@ -27,7 +27,7 @@
  * as XCB=101 and then force a read-back from the register.
  *
  */
-#if defined(CONFIG_ARCH_IXDP2400) || defined(CONFIG_ARCH_IXDP2401)
+#if defined(CONFIG_ARCH_ENP2611) || defined(CONFIG_ARCH_IXDP2400) || defined(CONFIG_ARCH_IXDP2401)
 
 #include <asm/system.h>		/* Pickup local_irq_ functions */