[ARM] 3388/1: ixp23xx: add core ixp23xx support

Patch from Lennert Buytenhek

This patch adds support for the Intel ixp23xx series of CPUs.  The
ixp23xx is an XSC3 based CPU with 512K of L2 cache, a 64bit 66MHz PCI
interface, two DDR RAM interfaces, QDR RAM interfaces, two gigabit
MACs, two 10/100 MACs, expansion bus, four microengines, a Media and
Switch Fabric unit almost identical to the one on the ixp2400, two
xscale (8250ish) UARTs and a bunch of other stuff.

This patch adds the core ixp23xx support code, and support for the
ADI Engineering Roadrunner, Intel IXDP2351, and IP Fabrics Double
Espresso platforms.
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/Kconfig

@@ -148,6 +148,12 @@ config ARCH_IXP2000
 	help
 	  Support for Intel's IXP2400/2800 (XScale) family of processors.
 
+config ARCH_IXP23XX
+ 	bool "IXP23XX-based"
+ 	select PCI
+	help
+	  Support for Intel's IXP23xx (XScale) family of processors.
+
 config ARCH_L7200
 	bool "LinkUp-L7200"
 	select FIQ
@@ -269,6 +275,8 @@ source "arch/arm/mach-ixp4xx/Kconfig"
 
 source "arch/arm/mach-ixp2000/Kconfig"
 
+source "arch/arm/mach-ixp23xx/Kconfig"
+
 source "arch/arm/mach-pxa/Kconfig"
 
 source "arch/arm/mach-sa1100/Kconfig"
@@ -787,7 +795,8 @@ source "drivers/acorn/block/Kconfig"
 
 if PCMCIA || ARCH_CLPS7500 || ARCH_IOP3XX || ARCH_IXP4XX \
 	|| ARCH_L7200 || ARCH_LH7A40X || ARCH_PXA || ARCH_RPC \
-	|| ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE
+	|| ARCH_S3C2410 || ARCH_SA1100 || ARCH_SHARK || FOOTBRIDGE \
+	|| ARCH_IXP23XX
 source "drivers/ide/Kconfig"
 endif
 

arch/arm/Makefile

@@ -98,6 +98,7 @@ endif
  machine-$(CONFIG_ARCH_IOP3XX)	   := iop3xx
  machine-$(CONFIG_ARCH_IXP4XX)	   := ixp4xx
  machine-$(CONFIG_ARCH_IXP2000)    := ixp2000
+ machine-$(CONFIG_ARCH_IXP23XX)    := ixp23xx
  machine-$(CONFIG_ARCH_OMAP1)	   := omap1
  machine-$(CONFIG_ARCH_OMAP2)	   := omap2
   incdir-$(CONFIG_ARCH_OMAP)	   := omap

arch/arm/mach-ixp23xx/Kconfig

+if ARCH_IXP23XX
+
+config ARCH_SUPPORTS_BIG_ENDIAN
+	bool
+	default y
+
+menu "Intel IXP23xx Implementation Options"
+
+comment "IXP23xx Platforms"
+
+config MACH_ESPRESSO
+	bool "Support IP Fabrics Double Espresso platform"
+	help
+
+config MACH_IXDP2351
+	bool "Support Intel IXDP2351 platform"
+	help
+
+config MACH_ROADRUNNER
+	bool "Support ADI RoadRunner platform"
+	help
+
+endmenu
+
+endif

arch/arm/mach-ixp23xx/Makefile

+#
+# Makefile for the linux kernel.
+#
+obj-y			:= core.o pci.o
+obj-m			:=
+obj-n			:=
+obj-			:=
+
+obj-$(CONFIG_MACH_ESPRESSO)	+= espresso.o
+obj-$(CONFIG_MACH_IXDP2351)	+= ixdp2351.o
+obj-$(CONFIG_MACH_ROADRUNNER)	+= roadrunner.o

arch/arm/mach-ixp23xx/Makefile.boot

+   zreladdr-y	:= 0x00008000
+params_phys-y	:= 0x00000100

arch/arm/mach-ixp23xx/espresso.c

+/*
+ * arch/arm/mach-ixp23xx/espresso.c
+ *
+ * Double Espresso-specific routines
+ *
+ * Author: Lennert Buytenhek <buytenh@wantstofly.org>
+ *
+ * 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.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/serial.h>
+#include <linux/tty.h>
+#include <linux/bitops.h>
+#include <linux/ioport.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+#include <linux/serial_core.h>
+#include <linux/device.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/mtd/physmap.h>
+
+#include <asm/types.h>
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/tlbflush.h>
+#include <asm/pgtable.h>
+
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/pci.h>
+
+static void __init espresso_init(void)
+{
+	physmap_configure(0x90000000, 0x02000000, 2, NULL);
+
+	/*
+	 * Mark flash as writeable.
+	 */
+	IXP23XX_EXP_CS0[0] |= IXP23XX_FLASH_WRITABLE;
+	IXP23XX_EXP_CS0[1] |= IXP23XX_FLASH_WRITABLE;
+
+	ixp23xx_sys_init();
+}
+
+MACHINE_START(ESPRESSO, "IP Fabrics Double Espresso")
+	/* Maintainer: Lennert Buytenhek */
+	.phys_io	= IXP23XX_PERIPHERAL_PHYS,
+	.io_pg_offst	= ((IXP23XX_PERIPHERAL_VIRT >> 18)) & 0xfffc,
+	.map_io		= ixp23xx_map_io,
+	.init_irq	= ixp23xx_init_irq,
+	.timer		= &ixp23xx_timer,
+	.boot_params	= 0x00000100,
+	.init_machine	= espresso_init,
+MACHINE_END

arch/arm/mach-ixp23xx/ixdp2351.c

+/*
+ * arch/arm/mach-ixp23xx/ixdp2351.c
+ *
+ * IXDP2351 board-specific routines
+ *
+ * Author: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright 2005 (c) MontaVista Software, Inc.
+ *
+ * Based on 2.4 code Copyright 2004 (c) Intel Corporation
+ *
+ * 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.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/serial.h>
+#include <linux/tty.h>
+#include <linux/bitops.h>
+#include <linux/ioport.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+#include <linux/serial_core.h>
+#include <linux/device.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/mtd/physmap.h>
+
+#include <asm/types.h>
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/tlbflush.h>
+#include <asm/pgtable.h>
+
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/pci.h>
+
+/*
+ * IXDP2351 Interrupt Handling
+ */
+static void ixdp2351_inta_mask(unsigned int irq)
+{
+	*IXDP2351_CPLD_INTA_MASK_SET_REG = IXDP2351_INTA_IRQ_MASK(irq);
+}
+
+static void ixdp2351_inta_unmask(unsigned int irq)
+{
+	*IXDP2351_CPLD_INTA_MASK_CLR_REG = IXDP2351_INTA_IRQ_MASK(irq);
+}
+
+static void ixdp2351_inta_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+{
+	u16 ex_interrupt =
+		*IXDP2351_CPLD_INTA_STAT_REG & IXDP2351_INTA_IRQ_VALID;
+	int i;
+
+	desc->chip->mask(irq);
+
+	for (i = 0; i < IXDP2351_INTA_IRQ_NUM; i++) {
+		if (ex_interrupt & (1 << i)) {
+			struct irqdesc *cpld_desc;
+			int cpld_irq =
+				IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE + i);
+			cpld_desc = irq_desc + cpld_irq;
+			cpld_desc->handle(cpld_irq, cpld_desc, regs);
+		}
+	}
+
+	desc->chip->unmask(irq);
+}
+
+static struct irqchip ixdp2351_inta_chip = {
+	.ack	= ixdp2351_inta_mask,
+	.mask	= ixdp2351_inta_mask,
+	.unmask	= ixdp2351_inta_unmask
+};
+
+static void ixdp2351_intb_mask(unsigned int irq)
+{
+	*IXDP2351_CPLD_INTB_MASK_SET_REG = IXDP2351_INTB_IRQ_MASK(irq);
+}
+
+static void ixdp2351_intb_unmask(unsigned int irq)
+{
+	*IXDP2351_CPLD_INTB_MASK_CLR_REG = IXDP2351_INTB_IRQ_MASK(irq);
+}
+
+static void ixdp2351_intb_handler(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
+{
+	u16 ex_interrupt =
+		*IXDP2351_CPLD_INTB_STAT_REG & IXDP2351_INTB_IRQ_VALID;
+	int i;
+
+	desc->chip->ack(irq);
+
+	for (i = 0; i < IXDP2351_INTB_IRQ_NUM; i++) {
+		if (ex_interrupt & (1 << i)) {
+			struct irqdesc *cpld_desc;
+			int cpld_irq =
+				IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE + i);
+			cpld_desc = irq_desc + cpld_irq;
+			cpld_desc->handle(cpld_irq, cpld_desc, regs);
+		}
+	}
+
+	desc->chip->unmask(irq);
+}
+
+static struct irqchip ixdp2351_intb_chip = {
+	.ack	= ixdp2351_intb_mask,
+	.mask	= ixdp2351_intb_mask,
+	.unmask	= ixdp2351_intb_unmask
+};
+
+void ixdp2351_init_irq(void)
+{
+	int irq;
+
+	/* Mask all interrupts from CPLD, disable simulation */
+	*IXDP2351_CPLD_INTA_MASK_SET_REG = (u16) -1;
+	*IXDP2351_CPLD_INTB_MASK_SET_REG = (u16) -1;
+	*IXDP2351_CPLD_INTA_SIM_REG = 0;
+	*IXDP2351_CPLD_INTB_SIM_REG = 0;
+
+	ixp23xx_init_irq();
+
+	for (irq = IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE);
+	     irq <
+	     IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE + IXDP2351_INTA_IRQ_NUM);
+	     irq++) {
+		if (IXDP2351_INTA_IRQ_MASK(irq) & IXDP2351_INTA_IRQ_VALID) {
+			set_irq_flags(irq, IRQF_VALID);
+			set_irq_handler(irq, do_level_IRQ);
+			set_irq_chip(irq, &ixdp2351_inta_chip);
+		}
+	}
+
+	for (irq = IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE);
+	     irq <
+	     IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE + IXDP2351_INTB_IRQ_NUM);
+	     irq++) {
+		if (IXDP2351_INTB_IRQ_MASK(irq) & IXDP2351_INTB_IRQ_VALID) {
+			set_irq_flags(irq, IRQF_VALID);
+			set_irq_handler(irq, do_level_IRQ);
+			set_irq_chip(irq, &ixdp2351_intb_chip);
+		}
+	}
+
+	set_irq_chained_handler(IRQ_IXP23XX_INTA, &ixdp2351_inta_handler);
+	set_irq_chained_handler(IRQ_IXP23XX_INTB, &ixdp2351_intb_handler);
+}
+
+/*
+ * IXDP2351 PCI
+ */
+
+/*
+ * This board does not do normal PCI IRQ routing, or any
+ * sort of swizzling, so we just need to check where on the
+ * bus the device is and figure out what CPLD pin it is
+ * being routed to.
+ */
+#define DEVPIN(dev, pin) ((pin) | ((dev) << 3))
+
+static int __init ixdp2351_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+	u8 bus = dev->bus->number;
+	u32 devpin = DEVPIN(PCI_SLOT(dev->devfn), pin);
+	struct pci_bus *tmp_bus = dev->bus;
+
+	/* Primary bus, no interrupts here */
+	if (!bus)
+		return -1;
+
+	/* Lookup first leaf in bus tree */
+	while ((tmp_bus->parent != NULL) && (tmp_bus->parent->parent != NULL))
+		tmp_bus = tmp_bus->parent;
+
+	/* Select between known bridges */
+	switch (tmp_bus->self->devfn | (tmp_bus->self->bus->number << 8)) {
+		/* Device is located after first bridge */
+	case 0x0008:
+		if (tmp_bus == dev->bus) {
+			/* Device is located directy after first bridge */
+			switch (devpin) {
+				/* Onboard 82546 */
+			case DEVPIN(1, 1):	/* Onboard 82546 ch 0 */
+				return IRQ_IXDP2351_INTA_82546;
+			case DEVPIN(1, 2):	/* Onboard 82546 ch 1 */
+				return IRQ_IXDP2351_INTB_82546;
+				/* PMC SLOT */
+			case DEVPIN(0, 1):	/* PMCP INTA# */
+			case DEVPIN(2, 4):	/* PMCS INTD# */
+				return IRQ_IXDP2351_SPCI_PMC_INTA;
+			case DEVPIN(0, 2):	/* PMCP INTB# */
+			case DEVPIN(2, 1):	/* PMCS INTA# */
+				return IRQ_IXDP2351_SPCI_PMC_INTB;
+			case DEVPIN(0, 3):	/* PMCP INTC# */
+			case DEVPIN(2, 2):	/* PMCS INTB# */
+				return IRQ_IXDP2351_SPCI_PMC_INTC;
+			case DEVPIN(0, 4):	/* PMCP INTD# */
+			case DEVPIN(2, 3):	/* PMCS INTC# */
+				return IRQ_IXDP2351_SPCI_PMC_INTD;
+			}
+		} else {
+			/* Device is located indirectly after first bridge */
+			/* Not supported now */
+			return -1;
+		}
+		break;
+	case 0x0010:
+		if (tmp_bus == dev->bus) {
+			/* Device is located directy after second bridge */
+			/* Secondary bus of second bridge */
+			switch (devpin) {
+			case DEVPIN(0, 1):	/* DB#0 */
+			case DEVPIN(0, 2):
+			case DEVPIN(0, 3):
+			case DEVPIN(0, 4):
+				return IRQ_IXDP2351_SPCI_DB_0;
+			case DEVPIN(1, 1):	/* DB#1 */
+			case DEVPIN(1, 2):
+			case DEVPIN(1, 3):
+			case DEVPIN(1, 4):
+				return IRQ_IXDP2351_SPCI_DB_1;
+			case DEVPIN(2, 1):	/* FIC1 */
+			case DEVPIN(2, 2):
+			case DEVPIN(2, 3):
+			case DEVPIN(2, 4):
+			case DEVPIN(3, 1):	/* FIC2 */
+			case DEVPIN(3, 2):
+			case DEVPIN(3, 3):
+			case DEVPIN(3, 4):
+				return IRQ_IXDP2351_SPCI_FIC;
+			}
+		} else {
+			/* Device is located indirectly after second bridge */
+			/* Not supported now */
+			return -1;
+		}
+		break;
+	}
+
+	return -1;
+}
+
+struct hw_pci ixdp2351_pci __initdata = {
+	.nr_controllers	= 1,
+	.preinit	= ixp23xx_pci_preinit,
+	.setup		= ixp23xx_pci_setup,
+	.scan		= ixp23xx_pci_scan_bus,
+	.map_irq	= ixdp2351_map_irq,
+};
+
+int __init ixdp2351_pci_init(void)
+{
+	if (machine_is_ixdp2351())
+		pci_common_init(&ixdp2351_pci);
+
+	return 0;
+}
+
+subsys_initcall(ixdp2351_pci_init);
+
+/*
+ * IXDP2351 Static Mapped I/O
+ */
+static struct map_desc ixdp2351_io_desc[] __initdata = {
+	{
+		.virtual	= IXDP2351_NP_VIRT_BASE,
+		.pfn		= __phys_to_pfn((u64)IXDP2351_NP_PHYS_BASE),
+		.length		= IXDP2351_NP_PHYS_SIZE,
+		.type		= MT_DEVICE
+	}, {
+		.virtual	= IXDP2351_BB_BASE_VIRT,
+		.pfn		= __phys_to_pfn((u64)IXDP2351_BB_BASE_PHYS),
+		.length		= IXDP2351_BB_SIZE,
+		.type		= MT_DEVICE
+	}
+};
+
+static void __init ixdp2351_map_io(void)
+{
+	ixp23xx_map_io();
+	iotable_init(ixdp2351_io_desc, ARRAY_SIZE(ixdp2351_io_desc));
+}
+
+static void __init ixdp2351_init(void)
+{
+	physmap_configure(0x90000000, 0x04000000, 1, NULL);
+
+	/*
+	 * Mark flash as writeable
+	 */
+	IXP23XX_EXP_CS0[0] |= IXP23XX_FLASH_WRITABLE;
+	IXP23XX_EXP_CS0[1] |= IXP23XX_FLASH_WRITABLE;
+	IXP23XX_EXP_CS0[2] |= IXP23XX_FLASH_WRITABLE;
+	IXP23XX_EXP_CS0[3] |= IXP23XX_FLASH_WRITABLE;
+
+	ixp23xx_sys_init();
+}
+
+MACHINE_START(IXDP2351, "Intel IXDP2351 Development Platform")
+	/* Maintainer: MontaVista Software, Inc. */
+	.phys_io	= IXP23XX_PERIPHERAL_PHYS,
+	.io_pg_offst	= ((IXP23XX_PERIPHERAL_VIRT >> 18)) & 0xfffc,
+	.map_io		= ixdp2351_map_io,
+	.init_irq	= ixdp2351_init_irq,
+	.timer		= &ixp23xx_timer,
+	.boot_params	= 0x00000100,
+	.init_machine	= ixdp2351_init,
+MACHINE_END

arch/arm/mach-ixp23xx/pci.c

+/*
+ * arch/arm/mach-ixp23xx/pci.c
+ *
+ * PCI routines for IXP23XX based systems
+ *
+ * Copyright (c) 2005 MontaVista Software, Inc.
+ *
+ * based on original code:
+ *
+ * Author: Naeem Afzal <naeem.m.afzal@intel.com>
+ * Copyright 2002-2005 Intel Corp.
+ *
+ * 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/sched.h>
+#include <linux/kernel.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 <asm/io.h>
+#include <asm/irq.h>
+#include <asm/sizes.h>
+#include <asm/system.h>
+#include <asm/mach/pci.h>
+#include <asm/mach-types.h>
+#include <asm/hardware.h>
+
+extern int (*external_fault) (unsigned long, struct pt_regs *);
+
+static int pci_master_aborts = 0;
+
+#ifdef DEBUG
+#define DBG(x...)	printk(x)
+#else
+#define DBG(x...)
+#endif
+
+int clear_master_aborts(void);
+
+static u32
+*ixp23xx_pci_config_addr(unsigned int bus_nr, unsigned int devfn, int where)
+{
+	u32 *paddress;
+
+	/*
+	 * Must be dword aligned
+	 */
+	where &= ~3;
+
+	/*
+	 * For top bus, generate type 0, else type 1
+	 */
+	if (!bus_nr) {
+		if (PCI_SLOT(devfn) >= 8)
+			return 0;
+
+		paddress = (u32 *) (IXP23XX_PCI_CFG0_VIRT
+				    | (1 << (PCI_SLOT(devfn) + 16))
+				    | (PCI_FUNC(devfn) << 8) | where);
+	} else {
+		paddress = (u32 *) (IXP23XX_PCI_CFG1_VIRT
+				    | (bus_nr << 16)
+				    | (PCI_SLOT(devfn) << 11)
+				    | (PCI_FUNC(devfn) << 8) | where);
+	}
+
+	return paddress;
+}
+
+/*
+ * Mask table, bits to mask for quantity of size 1, 2 or 4 bytes.
+ * 0 and 3 are not valid indexes...
+ */
+static u32 bytemask[] = {
+	/*0*/	0,
+	/*1*/	0xff,
+	/*2*/	0xffff,
+	/*3*/	0,
+	/*4*/	0xffffffff,
+};
+
+static int ixp23xx_pci_read_config(struct pci_bus *bus, unsigned int devfn,
+				int where, int size, u32 *value)
+{
+	u32 n;
+	u32 *addr;
+
+	n = where % 4;
+
+	DBG("In config_read(%d) %d from dev %d:%d:%d\n", size, where,
+		bus->number, PCI_SLOT(devfn), PCI_FUNC(devfn));
+
+	addr = ixp23xx_pci_config_addr(bus->number, devfn, where);
+	if (!addr)
+		return PCIBIOS_DEVICE_NOT_FOUND;
+
+	pci_master_aborts = 0;
+	*value = (*addr >> (8*n)) & bytemask[size];
+	if (pci_master_aborts) {
+			pci_master_aborts = 0;
+			*value = 0xffffffff;
+			return PCIBIOS_DEVICE_NOT_FOUND;
+		}
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+/*
+ * We don't do error checking on the address for writes.
+ * It's assumed that the user checked for the device existing first
+ * by doing a read first.
+ */
+static int ixp23xx_pci_write_config(struct pci_bus *bus, unsigned int devfn,
+					int where, int size, u32 value)
+{
+	u32 mask;
+	u32 *addr;
+	u32 temp;
+
+	mask = ~(bytemask[size] << ((where % 0x4) * 8));
+	addr = ixp23xx_pci_config_addr(bus->number, devfn, where);
+	if (!addr)
+		return PCIBIOS_DEVICE_NOT_FOUND;
+	temp = (u32) (value) << ((where % 0x4) * 8);
+	*addr = (*addr & mask) | temp;
+
+	clear_master_aborts();
+
+	return PCIBIOS_SUCCESSFUL;
+}
+
+struct pci_ops ixp23xx_pci_ops = {
+	.read	= ixp23xx_pci_read_config,
+	.write	= ixp23xx_pci_write_config,
+};
+
+struct pci_bus *ixp23xx_pci_scan_bus(int nr, struct pci_sys_data *sysdata)
+{
+	return pci_scan_bus(sysdata->busnr, &ixp23xx_pci_ops, sysdata);
+}
+
+int ixp23xx_pci_abort_handler(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
+{
+	volatile unsigned long temp;
+	unsigned long flags;
+
+	pci_master_aborts = 1;
+
+	local_irq_save(flags);
+	temp = *IXP23XX_PCI_CONTROL;
+
+	/*
+	 * master abort and cmd tgt err
+	 */
+	if (temp & ((1 << 8) | (1 << 5)))
+		*IXP23XX_PCI_CONTROL = temp;
+
+	temp = *IXP23XX_PCI_CMDSTAT;
+
+	if (temp & (1 << 29))
+		*IXP23XX_PCI_CMDSTAT = temp;
+	local_irq_restore(flags);
+
+	/*
+	 * If it was an imprecise abort, then we need to correct the
+	 * return address to be _after_ the instruction.
+	 */
+	if (fsr & (1 << 10))
+		regs->ARM_pc += 4;
+
+	return 0;
+}
+
+int clear_master_aborts(void)
+{
+	volatile u32 temp;
+
+	temp = *IXP23XX_PCI_CONTROL;
+
+	/*
+	 * master abort and cmd tgt err
+	 */
+	if (temp & ((1 << 8) | (1 << 5)))
+		*IXP23XX_PCI_CONTROL = temp;
+
+	temp = *IXP23XX_PCI_CMDSTAT;
+
+	if (temp & (1 << 29))
+		*IXP23XX_PCI_CMDSTAT = temp;
+
+	return 0;
+}
+
+void __init ixp23xx_pci_preinit(void)
+{
+#ifdef __ARMEB__
+	*IXP23XX_PCI_CONTROL |= 0x20000;	/* set I/O swapping */
+#endif
+	/*
+	 * ADDR_31 needs to be clear for PCI memory access to CPP memory
+	 */
+	*IXP23XX_CPP2XSI_CURR_XFER_REG3 &= ~IXP23XX_CPP2XSI_ADDR_31;
+	*IXP23XX_CPP2XSI_CURR_XFER_REG3 |= IXP23XX_CPP2XSI_PSH_OFF;
+
+	/*
+	 * Select correct memory for PCI inbound transactions
+	 */
+	if (ixp23xx_cpp_boot()) {
+		*IXP23XX_PCI_CPP_ADDR_BITS &= ~(1 << 1);
+	} else {
+		*IXP23XX_PCI_CPP_ADDR_BITS |= (1 << 1);
+	}
+
+	hook_fault_code(16+6, ixp23xx_pci_abort_handler, SIGBUS,
+			"PCI config cycle to non-existent device");
+
+	*IXP23XX_PCI_ADDR_EXT = 0x0000e000;
+}
+
+/*
+ * Prevent PCI layer from seeing the inbound host-bridge resources
+ */
+static void __devinit pci_fixup_ixp23xx(struct pci_dev *dev)
+{
+	int i;
+
+	dev->class &= 0xff;
+	dev->class |= PCI_CLASS_BRIDGE_HOST << 8;
+	for (i = 0; i < PCI_NUM_RESOURCES; i++) {
+		dev->resource[i].start = 0;
+		dev->resource[i].end   = 0;
+		dev->resource[i].flags = 0;
+	}
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9002, pci_fixup_ixp23xx);
+
+/*
+ * IXP2300 systems often have large resource requirements, so we just
+ * use our own resource space.
+ */
+static struct resource ixp23xx_pci_mem_space = {
+	.start	= IXP23XX_PCI_MEM_START,
+	.end	= IXP23XX_PCI_MEM_START + IXP23XX_PCI_MEM_SIZE - 1,
+	.flags	= IORESOURCE_MEM,
+	.name	= "PCI Mem Space"
+};
+
+static struct resource ixp23xx_pci_io_space = {
+	.start	= 0x00000100,
+	.end	= 0x01ffffff,
+	.flags	= IORESOURCE_IO,
+	.name	= "PCI I/O Space"
+};
+
+int ixp23xx_pci_setup(int nr, struct pci_sys_data *sys)
+{
+	if (nr >= 1)
+		return 0;
+
+	sys->resource[0] = &ixp23xx_pci_io_space;
+	sys->resource[1] = &ixp23xx_pci_mem_space;
+	sys->resource[2] = NULL;
+
+	return 1;
+}

arch/arm/mach-ixp23xx/roadrunner.c

+/*
+ * arch/arm/mach-ixp23xx/roadrunner.c
+ *
+ * RoadRunner board-specific routines
+ *
+ * Author: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright 2005 (c) MontaVista Software, Inc.
+ *
+ * Based on 2.4 code Copyright 2005 (c) ADI Engineering Corporation
+ *
+ * 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.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/sched.h>
+#include <linux/interrupt.h>
+#include <linux/serial.h>
+#include <linux/tty.h>
+#include <linux/bitops.h>
+#include <linux/ioport.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+#include <linux/serial_core.h>
+#include <linux/device.h>
+#include <linux/mm.h>
+#include <linux/pci.h>
+#include <linux/mtd/physmap.h>
+
+#include <asm/types.h>
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/irq.h>
+#include <asm/system.h>
+#include <asm/tlbflush.h>
+#include <asm/pgtable.h>
+
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/pci.h>
+
+/*
+ * Interrupt mapping
+ */
+#define INTA		IRQ_ROADRUNNER_PCI_INTA
+#define INTB		IRQ_ROADRUNNER_PCI_INTB
+#define INTC		IRQ_ROADRUNNER_PCI_INTC
+#define INTD		IRQ_ROADRUNNER_PCI_INTD
+
+#define INTC_PIN	IXP23XX_GPIO_PIN_11
+#define INTD_PIN	IXP23XX_GPIO_PIN_12
+
+static int __init roadrunner_map_irq(struct pci_dev *dev, u8 idsel, u8 pin)
+{
+	static int pci_card_slot_irq[] = {INTB, INTC, INTD, INTA};
+	static int pmc_card_slot_irq[] = {INTA, INTB, INTC, INTD};
+	static int usb_irq[] = {INTB, INTC, INTD, -1};
+	static int mini_pci_1_irq[] = {INTB, INTC, -1, -1};
+	static int mini_pci_2_irq[] = {INTC, INTD, -1, -1};
+
+	switch(dev->bus->number) {
+		case 0:
+			switch(dev->devfn) {
+			case 0x0: // PCI-PCI bridge
+				break;
+			case 0x8: // PCI Card Slot
+				return pci_card_slot_irq[pin - 1];
+			case 0x10: // PMC Slot
+				return pmc_card_slot_irq[pin - 1];
+			case 0x18: // PMC Slot Secondary Agent
+				break;
+			case 0x20: // IXP Processor
+				break;
+			default:
+				return NO_IRQ;
+			}
+			break;
+
+		case 1:
+			switch(dev->devfn) {
+			case 0x0: // IDE Controller
+				return (pin == 1) ? INTC : -1;
+			case 0x8: // USB fun 0
+			case 0x9: // USB fun 1
+			case 0xa: // USB fun 2
+				return usb_irq[pin - 1];
+			case 0x10: // Mini PCI 1
+				return mini_pci_1_irq[pin-1];
+			case 0x18: // Mini PCI 2
+				return mini_pci_2_irq[pin-1];
+			case 0x20: // MEM slot
+				return (pin == 1) ? INTA : -1;
+			default:
+				return NO_IRQ;
+			}
+			break;
+
+		default:
+			return NO_IRQ;
+	}
+
+	return NO_IRQ;
+}
+
+static void roadrunner_pci_preinit(void)
+{
+	set_irq_type(IRQ_ROADRUNNER_PCI_INTC, IRQT_LOW);
+	set_irq_type(IRQ_ROADRUNNER_PCI_INTD, IRQT_LOW);
+
+	ixp23xx_pci_preinit();
+}
+
+static struct hw_pci roadrunner_pci __initdata = {
+	.nr_controllers	= 1,
+	.preinit	= roadrunner_pci_preinit,
+	.setup		= ixp23xx_pci_setup,
+	.scan		= ixp23xx_pci_scan_bus,
+	.map_irq	= roadrunner_map_irq,
+};
+
+static int __init roadrunner_pci_init(void)
+{
+	if (machine_is_roadrunner())
+		pci_common_init(&roadrunner_pci);
+
+	return 0;
+};
+
+subsys_initcall(roadrunner_pci_init);
+
+static void __init roadrunner_init(void)
+{
+	physmap_configure(0x90000000, 0x04000000, 2, NULL);
+
+	/*
+	 * Mark flash as writeable
+	 */
+	IXP23XX_EXP_CS0[0] |= IXP23XX_FLASH_WRITABLE;
+	IXP23XX_EXP_CS0[1] |= IXP23XX_FLASH_WRITABLE;
+	IXP23XX_EXP_CS0[2] |= IXP23XX_FLASH_WRITABLE;
+	IXP23XX_EXP_CS0[3] |= IXP23XX_FLASH_WRITABLE;
+
+	ixp23xx_sys_init();
+}
+
+MACHINE_START(ROADRUNNER, "ADI Engineering RoadRunner Development Platform")
+	/* Maintainer: Deepak Saxena */
+	.phys_io	= IXP23XX_PERIPHERAL_PHYS,
+	.io_pg_offst	= ((IXP23XX_PERIPHERAL_VIRT >> 18)) & 0xfffc,
+	.map_io		= ixp23xx_map_io,
+	.init_irq	= ixp23xx_init_irq,
+	.timer		= &ixp23xx_timer,
+	.boot_params	= 0x00000100,
+	.init_machine	= roadrunner_init,
+MACHINE_END

include/asm-arm/arch-ixp23xx/debug-macro.S

+/*
+ * include/asm-arm/arch-ixp23xx/debug-macro.S
+ *
+ * Debugging macro include header
+ *
+ * Copyright (C) 1994-1999 Russell King
+ * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
+ *
+ * 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 <asm/arch/ixp23xx.h>
+
+		.macro	addruart,rx
+		mrc	p15, 0, \rx, c1, c0
+		tst	\rx, #1				@ mmu enabled?
+		ldreq	\rx, =IXP23XX_PERIPHERAL_PHYS 	@ physical
+		ldrne	\rx, =IXP23XX_PERIPHERAL_VIRT	@ virtual
+		.endm
+
+#define UART_SHIFT	2
+#include <asm/hardware/debug-8250.S>

include/asm-arm/arch-ixp23xx/dma.h

+/*
+ * include/asm-arm/arch-ixp23xx/dma.h
+ */

include/asm-arm/arch-ixp23xx/entry-macro.S

+/*
+ * include/asm-arm/arch-ixp23xx/entry-macro.S
+ */
+
+		.macro	disable_fiq
+		.endm
+
+		.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
+		ldr	\irqnr, =(IXP23XX_INTC_VIRT + IXP23XX_INTR_IRQ_ENC_ST_OFFSET)
+		ldr	\irqnr, [\irqnr]	@ get interrupt number
+		cmp	\irqnr, #0x0		@ suprious interrupt ?
+		movne	\irqnr, \irqnr, lsr #2	@ skip unwanted low order bits
+		subne	\irqnr, \irqnr, #1	@ convert to 0 based
+
+#if 0
+		cmp	\irqnr, #IRQ_IXP23XX_PCI_INT_RPH
+		bne	1001f
+		mov	\irqnr, #IRQ_IXP23XX_INTA
+
+		ldr	\irqnr, =0xf5000030
+
+		mov	\tmp, #(1<<26)
+		tst	\irqnr, \tmp
+		movne	\irqnr, #IRQ_IXP23XX_INTB
+
+		mov	\tmp, #(1<<27)
+		tst	\irqnr, \tmp
+		movne	\irqnr, #IRQ_IXP23XX_INTA
+1001:
+#endif
+		.endm

include/asm-arm/arch-ixp23xx/hardware.h

+/*
+ * include/asm-arm/arch-ixp23xx/hardware.h
+ *
+ * Copyright (C) 2002-2004 Intel Corporation.
+ * Copyricht (C) 2005 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 version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Hardware definitions for IXP23XX based systems
+ */
+
+#ifndef __ASM_ARCH_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+
+/* PCI IO info */
+#define PCIO_BASE		IXP23XX_PCI_IO_VIRT
+#define PCIBIOS_MIN_IO		0x00000000
+#define PCIBIOS_MIN_MEM		0xe0000000
+
+#include "ixp23xx.h"
+
+#define pcibios_assign_all_busses()	0
+
+/*
+ * Platform helper functions
+ */
+#include "platform.h"
+
+/*
+ * Platform-specific headers
+ */
+#include "ixdp2351.h"
+
+
+#endif

include/asm-arm/arch-ixp23xx/io.h

+/*
+ * include/asm-arm/arch-ixp23xx/io.h
+ *
+ * Original Author: Naeem M Afzal <naeem.m.afzal@intel.com>
+ * Maintainer: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright (C) 2003-2005 Intel Corp.
+ * Copyright (C) 2005 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 version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_IO_H
+#define __ASM_ARCH_IO_H
+
+#define IO_SPACE_LIMIT 0xffffffff
+
+#define __io(p)		((void __iomem*)((p) + IXP23XX_PCI_IO_VIRT))
+#define __mem_pci(a)	(a)
+
+#include <linux/kernel.h>	/* For BUG */
+
+static inline void __iomem *
+ixp23xx_ioremap(unsigned long addr, unsigned long size, unsigned long flags)
+{
+	if (addr >= IXP23XX_PCI_MEM_START &&
+		addr <= IXP23XX_PCI_MEM_START + IXP23XX_PCI_MEM_SIZE) {
+		if (addr + size > IXP23XX_PCI_MEM_START + IXP23XX_PCI_MEM_SIZE)
+			return NULL;
+
+		return (void __iomem *)
+ 			((addr - IXP23XX_PCI_MEM_START) + IXP23XX_PCI_MEM_VIRT);
+	}
+
+	return __ioremap(addr, size, flags);
+}
+
+static inline void
+ixp23xx_iounmap(void __iomem *addr)
+{
+	if ((((u32)addr) >= IXP23XX_PCI_MEM_VIRT) &&
+	    (((u32)addr) < IXP23XX_PCI_MEM_VIRT + IXP23XX_PCI_MEM_SIZE))
+		return;
+
+	__iounmap(addr);
+}
+
+#define __arch_ioremap(a,s,f)	ixp23xx_ioremap(a,s,f)
+#define __arch_iounmap(a)	ixp23xx_iounmap(a)
+
+
+#endif

include/asm-arm/arch-ixp23xx/irqs.h

+/*
+ * include/asm-arm/arch-ixp23xx/irqs.h
+ *
+ * IRQ definitions for IXP23XX based systems
+ *
+ * Author: Naeem Afzal <naeem.m.afzal@intel.com>
+ *
+ * Copyright (C) 2003-2004 Intel Corporation.
+ *
+ * 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.
+ */
+
+#ifndef __ASM_ARCH_IRQS_H
+#define __ASM_ARCH_IRQS_H
+
+#define NR_IXP23XX_IRQS			IRQ_IXP23XX_INTB+1
+#define IRQ_IXP23XX_EXTIRQS		NR_IXP23XX_IRQS
+
+
+#define IRQ_IXP23XX_DBG0		0	/* Debug/Execution/MBox */
+#define IRQ_IXP23XX_DBG1		1	/* Debug/Execution/MBox */
+#define IRQ_IXP23XX_NPE_TRG		2	/* npe_trigger */
+#define IRQ_IXP23XX_TIMER1		3	/* Timer[0] */
+#define IRQ_IXP23XX_TIMER2		4	/* Timer[1] */
+#define IRQ_IXP23XX_TIMESTAMP		5	/* Timer[2], Time-stamp */
+#define IRQ_IXP23XX_WDOG		6	/* Time[3], Watchdog Timer */
+#define IRQ_IXP23XX_PCI_DBELL		7	/* PCI Doorbell */
+#define IRQ_IXP23XX_PCI_DMA1		8	/* PCI DMA Channel 1 */
+#define IRQ_IXP23XX_PCI_DMA2		9	/* PCI DMA Channel 2 */
+#define IRQ_IXP23XX_PCI_DMA3		10	/* PCI DMA Channel 3 */
+#define IRQ_IXP23XX_PCI_INT_RPH		11	/* pcxg_pci_int_rph */
+#define IRQ_IXP23XX_CPP_PMU		12	/* xpxg_pm_int_rpl */
+#define IRQ_IXP23XX_SWINT0		13	/* S/W Interrupt0 */
+#define IRQ_IXP23XX_SWINT1		14	/* S/W Interrupt1 */
+#define IRQ_IXP23XX_UART2		15	/* UART1 Interrupt */
+#define IRQ_IXP23XX_UART1		16	/* UART0 Interrupt */
+#define IRQ_IXP23XX_XSI_PMU_ROLLOVER	17	/* AHB Performance M. Unit counter rollover */
+#define IRQ_IXP23XX_XSI_AHB_PM0		18	/* intr_pm_o */
+#define IRQ_IXP23XX_XSI_AHB_ECE0	19	/* intr_ece_o */
+#define IRQ_IXP23XX_XSI_AHB_GASKET	20	/* gas_intr_o */
+#define IRQ_IXP23XX_XSI_CPP		21	/* xsi2cpp_int */
+#define IRQ_IXP23XX_CPP_XSI		22	/* cpp2xsi_int */
+#define IRQ_IXP23XX_ME_ATTN0		23	/* ME_ATTN */
+#define IRQ_IXP23XX_ME_ATTN1		24	/* ME_ATTN */
+#define IRQ_IXP23XX_ME_ATTN2		25	/* ME_ATTN */
+#define IRQ_IXP23XX_ME_ATTN3		26	/* ME_ATTN */
+#define IRQ_IXP23XX_PCI_ERR_RPH		27	/* PCXG_PCI_ERR_RPH */
+#define IRQ_IXP23XX_D0XG_ECC_CORR	28	/* D0XG_DRAM_ECC_CORR */
+#define IRQ_IXP23XX_D0XG_ECC_UNCORR	29	/* D0XG_DRAM_ECC_UNCORR */
+#define IRQ_IXP23XX_SRAM_ERR1		30	/* SRAM1_ERR */
+#define IRQ_IXP23XX_SRAM_ERR0		31	/* SRAM0_ERR */
+#define IRQ_IXP23XX_MEDIA_ERR		32	/* MEDIA_ERR */
+#define IRQ_IXP23XX_STH_DRAM_ECC_MAJ	33	/* STH_DRAM0_ECC_MAJ */
+#define IRQ_IXP23XX_GPIO6		34	/* GPIO0 interrupts */
+#define IRQ_IXP23XX_GPIO7		35	/* GPIO1 interrupts */
+#define IRQ_IXP23XX_GPIO8		36	/* GPIO2 interrupts */
+#define IRQ_IXP23XX_GPIO9		37	/* GPIO3 interrupts */
+#define IRQ_IXP23XX_GPIO10		38	/* GPIO4 interrupts */
+#define IRQ_IXP23XX_GPIO11		39	/* GPIO5 interrupts */
+#define IRQ_IXP23XX_GPIO12		40	/* GPIO6 interrupts */
+#define IRQ_IXP23XX_GPIO13		41	/* GPIO7 interrupts */
+#define IRQ_IXP23XX_GPIO14		42	/* GPIO8 interrupts */
+#define IRQ_IXP23XX_GPIO15		43	/* GPIO9 interrupts */
+#define IRQ_IXP23XX_SHAC_RING0		44	/* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING1		45	/* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING2		46	/* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING3		47	/* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING4		48	/* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING5		49	/* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING6		50	/* SHAC RING Full */
+#define IRQ_IXP23XX_SHAC_RING7		51	/* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING8		52	/* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING9		53	/* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING10		54	/* SHAC Ring Full */
+#define IRQ_IXP23XX_SHAC_RING11		55	/* SHAC Ring Full */
+#define IRQ_IXP23XX_ME_THREAD_A0_ME0	56	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A1_ME0	57	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A2_ME0	58	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A3_ME0	59	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A4_ME0	60	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A5_ME0	61	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A6_ME0	62	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A7_ME0	63	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A8_ME1	64	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A9_ME1	65	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A10_ME1	66	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A11_ME1	67	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A12_ME1	68	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A13_ME1	69	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A14_ME1	70	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A15_ME1	71	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A16_ME2	72	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A17_ME2	73	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A18_ME2	74	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A19_ME2	75	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A20_ME2	76	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A21_ME2	77	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A22_ME2	78	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A23_ME2	79	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A24_ME3	80	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A25_ME3	81	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A26_ME3	82	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A27_ME3	83	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A28_ME3	84	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A29_ME3	85	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A30_ME3	86	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_A31_ME3	87	/* ME_THREAD_A */
+#define IRQ_IXP23XX_ME_THREAD_B0_ME0	88	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B1_ME0	89	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B2_ME0	90	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B3_ME0	91	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B4_ME0	92	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B5_ME0	93	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B6_ME0	94	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B7_ME0	95	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B8_ME1	96	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B9_ME1	97	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B10_ME1	98	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B11_ME1	99	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B12_ME1	100	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B13_ME1	101	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B14_ME1	102	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B15_ME1	103	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B16_ME2	104	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B17_ME2	105	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B18_ME2	106	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B19_ME2	107	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B20_ME2	108	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B21_ME2	109	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B22_ME2	110	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B23_ME2	111	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B24_ME3	112	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B25_ME3	113	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B26_ME3	114	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B27_ME3	115	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B28_ME3	116	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B29_ME3	117	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B30_ME3	118	/* ME_THREAD_B */
+#define IRQ_IXP23XX_ME_THREAD_B31_ME3	119	/* ME_THREAD_B */
+
+#define NUM_IXP23XX_RAW_IRQS		120
+
+#define IRQ_IXP23XX_INTA		120	/* Indirect pcxg_pci_int_rph */
+#define IRQ_IXP23XX_INTB		121	/* Indirect pcxg_pci_int_rph */
+
+#define NR_IXP23XX_IRQ			(IRQ_IXP23XX_INTB + 1)
+
+/*
+ * We default to 32 per-board IRQs. Increase this number if you need
+ * more, but keep it realistic.
+ */
+#define NR_IXP23XX_MACH_IRQS 		32
+
+#define NR_IRQS				NR_IXP23XX_IRQS + NR_IXP23XX_MACH_IRQS
+
+#define IXP23XX_MACH_IRQ(irq) 		(NR_IXP23XX_IRQ + (irq))
+
+
+/*
+ * IXDP2351-specific interrupts
+ */
+
+/*
+ * External PCI interrupts signaled through INTB
+ *
+ */
+#define IXDP2351_INTB_IRQ_BASE 		0
+#define IRQ_IXDP2351_INTA_82546		IXP23XX_MACH_IRQ(0)
+#define IRQ_IXDP2351_INTB_82546		IXP23XX_MACH_IRQ(1)
+#define IRQ_IXDP2351_SPCI_DB_0		IXP23XX_MACH_IRQ(2)
+#define IRQ_IXDP2351_SPCI_DB_1		IXP23XX_MACH_IRQ(3)
+#define IRQ_IXDP2351_SPCI_PMC_INTA	IXP23XX_MACH_IRQ(4)
+#define IRQ_IXDP2351_SPCI_PMC_INTB	IXP23XX_MACH_IRQ(5)
+#define IRQ_IXDP2351_SPCI_PMC_INTC	IXP23XX_MACH_IRQ(6)
+#define IRQ_IXDP2351_SPCI_PMC_INTD	IXP23XX_MACH_IRQ(7)
+#define IRQ_IXDP2351_SPCI_FIC		IXP23XX_MACH_IRQ(8)
+
+#define IXDP2351_INTB_IRQ_BIT(irq)	(irq - IXP23XX_MACH_IRQ(0))
+#define IXDP2351_INTB_IRQ_MASK(irq)	(1 << IXDP2351_INTB_IRQ_BIT(irq))
+#define IXDP2351_INTB_IRQ_VALID		0x01FF
+#define IXDP2351_INTB_IRQ_NUM 		16
+
+/*
+ * Other external interrupts signaled through INTA
+ */
+#define IXDP2351_INTA_IRQ_BASE 		16
+#define IRQ_IXDP2351_IPMI_FROM		IXP23XX_MACH_IRQ(16)
+#define IRQ_IXDP2351_125US		IXP23XX_MACH_IRQ(17)
+#define IRQ_IXDP2351_DB_0_ADD		IXP23XX_MACH_IRQ(18)
+#define IRQ_IXDP2351_DB_1_ADD		IXP23XX_MACH_IRQ(19)
+#define IRQ_IXDP2351_DEBUG1		IXP23XX_MACH_IRQ(20)
+#define IRQ_IXDP2351_ADD_UART		IXP23XX_MACH_IRQ(21)
+#define IRQ_IXDP2351_FIC_ADD		IXP23XX_MACH_IRQ(24)
+#define IRQ_IXDP2351_CS8900		IXP23XX_MACH_IRQ(25)
+#define IRQ_IXDP2351_BBSRAM		IXP23XX_MACH_IRQ(26)
+#define IRQ_IXDP2351_CONFIG_MEDIA	IXP23XX_MACH_IRQ(27)
+#define IRQ_IXDP2351_CLOCK_REF		IXP23XX_MACH_IRQ(28)
+#define IRQ_IXDP2351_A10_NP		IXP23XX_MACH_IRQ(29)
+#define IRQ_IXDP2351_A11_NP		IXP23XX_MACH_IRQ(30)
+#define IRQ_IXDP2351_DEBUG_NP		IXP23XX_MACH_IRQ(31)
+
+#define IXDP2351_INTA_IRQ_BIT(irq) 	(irq - IXP23XX_MACH_IRQ(16))
+#define IXDP2351_INTA_IRQ_MASK(irq) 	(1 << IXDP2351_INTA_IRQ_BIT(irq))
+#define IXDP2351_INTA_IRQ_VALID 	0xFF3F
+#define IXDP2351_INTA_IRQ_NUM 		16
+
+
+/*
+ * ADI RoadRunner IRQs
+ */
+#define IRQ_ROADRUNNER_PCI_INTA 	IRQ_IXP23XX_INTA
+#define IRQ_ROADRUNNER_PCI_INTB 	IRQ_IXP23XX_INTB
+#define IRQ_ROADRUNNER_PCI_INTC 	IRQ_IXP23XX_GPIO11
+#define IRQ_ROADRUNNER_PCI_INTD 	IRQ_IXP23XX_GPIO12
+
+/*
+ * Put new board definitions here
+ */
+
+
+#endif

include/asm-arm/arch-ixp23xx/ixdp2351.h

+/*
+ * include/asm-arm/arch-ixp23xx/ixdp2351.h
+ *
+ * Register and other defines for IXDP2351
+ *
+ * Copyright (c) 2002-2004 Intel Corp.
+ * Copytight (c) 2005 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 __ASM_ARCH_IXDP2351_H
+#define __ASM_ARCH_IXDP2351_H
+
+/*
+ * NP module memory map
+ */
+#define IXDP2351_NP_PHYS_BASE		(IXP23XX_EXP_BUS_CS4_BASE)
+#define IXDP2351_NP_PHYS_SIZE		0x00100000
+#define IXDP2351_NP_VIRT_BASE		0xeff00000
+
+#define IXDP2351_VIRT_CS8900_BASE	(IXDP2351_NP_VIRT_BASE)
+#define IXDP2351_VIRT_CS8900_END	(IXDP2351_VIRT_CS8900_BASE + 16)
+
+#define IXDP2351_VIRT_NP_CPLD_BASE 	(IXP23XX_EXP_BUS_CS4_BASE_VIRT + 0x00010000)
+
+#define IXDP2351_NP_CPLD_REG(reg) ((volatile u16 *)(IXDP2351_VIRT_NP_CPLD_BASE + reg))
+
+#define IXDP2351_NP_CPLD_RESET1_REG	IXDP2351_NP_CPLD_REG(0x00)
+#define IXDP2351_NP_CPLD_LED_REG	IXDP2351_NP_CPLD_REG(0x02)
+#define IXDP2351_NP_CPLD_VERSION_REG	IXDP2351_NP_CPLD_REG(0x04)
+
+/*
+ * Base board module memory map
+ */
+
+#define IXDP2351_BB_BASE_PHYS		(IXP23XX_EXP_BUS_CS5_BASE)
+#define IXDP2351_BB_SIZE		0x01000000
+#define IXDP2351_BB_BASE_VIRT		(0xee000000)
+
+#define IXDP2351_BB_AREA_BASE(offset)	(IXDP2351_BB_BASE_VIRT + offset)
+
+#define IXDP2351_VIRT_NVRAM_BASE	IXDP2351_BB_AREA_BASE(0x0)
+#define IXDP2351_NVRAM_SIZE		(0x20000)
+
+#define IXDP2351_VIRT_MB_IXF1104_BASE	IXDP3251_BB_AREA_BASE(0x00020000)
+#define IXDP2351_VIRT_ADD_UART_BASE	IXDP2351_BB_AREA_BASE(0x000240C0)
+#define IXDP2351_VIRT_FIC_BASE		IXDP2351_BB_AREA_BASE(0x00200000)
+#define IXDP2351_VIRT_DB0_BASE		IXDP2351_BB_AREA_BASE(0x00400000)
+#define IXDP2351_VIRT_DB1_BASE		IXDP2351_BB_AREA_BASE(0x00600000)
+#define IXDP2351_VIRT_CPLD_BASE		IXDP2351_BB_AREA_BASE(0x00024000)
+
+/*
+ * On board CPLD registers
+ */
+#define IXDP2351_CPLD_BB_REG(reg) ((volatile u16 *)(IXDP2351_VIRT_CPLD_BASE + reg))
+
+#define IXDP2351_CPLD_RESET0_REG	IXDP2351_CPLD_BB_REG(0x00)
+#define IXDP2351_CPLD_RESET1_REG	IXDP2351_CPLD_BB_REG(0x04)
+
+#define IXDP2351_CPLD_RESET1_MAGIC 	0x55AA
+#define IXDP2351_CPLD_RESET1_ENABLE 	0x8000
+
+#define IXDP2351_CPLD_FPGA_CONFIG_REG	IXDP2351_CPLD_BB_REG(0x08)
+#define IXDP2351_CPLD_INTB_MASK_SET_REG	IXDP2351_CPLD_BB_REG(0x10)
+#define IXDP2351_CPLD_INTA_MASK_SET_REG	IXDP2351_CPLD_BB_REG(0x14)
+#define IXDP2351_CPLD_INTB_STAT_REG	IXDP2351_CPLD_BB_REG(0x18)
+#define IXDP2351_CPLD_INTA_STAT_REG	IXDP2351_CPLD_BB_REG(0x1C)
+#define IXDP2351_CPLD_INTB_RAW_REG	IXDP2351_CPLD_BB_REG(0x20)	/* read */
+#define IXDP2351_CPLD_INTA_RAW_REG	IXDP2351_CPLD_BB_REG(0x24)	/* read */
+#define IXDP2351_CPLD_INTB_MASK_CLR_REG	IXDP2351_CPLD_INTB_RAW_REG	/* write */
+#define IXDP2351_CPLD_INTA_MASK_CLR_REG	IXDP2351_CPLD_INTA_RAW_REG	/* write */
+#define IXDP2351_CPLD_INTB_SIM_REG	IXDP2351_CPLD_BB_REG(0x28)
+#define IXDP2351_CPLD_INTA_SIM_REG	IXDP2351_CPLD_BB_REG(0x2C)
+	/* Interrupt bits are defined in irqs.h */
+#define IXDP2351_CPLD_BB_GBE0_REG	IXDP2351_CPLD_BB_REG(0x30)
+#define IXDP2351_CPLD_BB_GBE1_REG	IXDP2351_CPLD_BB_REG(0x34)
+
+/* #define IXDP2351_CPLD_BB_MISC_REG	IXDP2351_CPLD_REG(0x1C) */
+/* #define IXDP2351_CPLD_BB_MISC_REV_MASK	0xFF		*/
+/* #define IXDP2351_CPLD_BB_GDXCS0_REG	IXDP2351_CPLD_REG(0x24) */
+/* #define IXDP2351_CPLD_BB_GDXCS1_REG	IXDP2351_CPLD_REG(0x28) */
+/* #define IXDP2351_CPLD_BB_CLOCK_REG	IXDP2351_CPLD_REG(0x04) */
+
+
+#endif

include/asm-arm/arch-ixp23xx/memory.h

+/*
+ * include/asm-arm/arch-ixp23xx/memory.h
+ *
+ * Copyright (c) 2003-2004 Intel Corp.
+ *
+ * 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 __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#include <asm/hardware.h>
+
+/*
+ * Physical DRAM offset.
+ */
+#define PHYS_OFFSET		(0x00000000)
+
+
+/*
+ * Virtual view <-> DMA view memory address translations
+ * virt_to_bus: Used to translate the virtual address to an
+ *		address suitable to be passed to set_dma_addr
+ * bus_to_virt: Used to convert an address for DMA operations
+ *		to an address that the kernel can use.
+ */
+#ifndef __ASSEMBLY__
+
+#define __virt_to_bus(v)						\
+	({ unsigned int ret;						\
+	ret = ((__virt_to_phys(v) - 0x00000000) +			\
+	 (*((volatile int *)IXP23XX_PCI_SDRAM_BAR) & 0xfffffff0)); 	\
+	ret; })
+
+#define __bus_to_virt(b)						\
+	({ unsigned int data;						\
+	data = *((volatile int *)IXP23XX_PCI_SDRAM_BAR);		\
+	 __phys_to_virt((((b - (data & 0xfffffff0)) + 0x00000000))); })
+
+#endif
+
+
+#endif

include/asm-arm/arch-ixp23xx/platform.h

+/*
+ * include/asm-arm/arch-ixp23xx/platform.h
+ *
+ * Various bits of code used by platform-level code.
+ *
+ * Author: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright 2005 (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 __ASSEMBLY__
+
+struct pci_sys_data;
+
+void ixp23xx_map_io(void);
+void ixp23xx_init_irq(void);
+void ixp23xx_sys_init(void);
+int ixp23xx_pci_setup(int, struct pci_sys_data *);
+void ixp23xx_pci_preinit(void);
+struct pci_bus *ixp23xx_pci_scan_bus(int, struct pci_sys_data*);
+
+extern struct sys_timer ixp23xx_timer;
+
+#define IXP23XX_UART_XTAL		14745600
+
+
+#endif

include/asm-arm/arch-ixp23xx/system.h

+/*
+ * include/asm-arm/arch-ixp23xx/system.h
+ *
+ * Copyright (C) 2003 Intel Corporation.
+ *
+ * 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 <asm/hardware.h>
+#include <asm/mach-types.h>
+
+static inline void arch_idle(void)
+{
+#if 0
+	if (!hlt_counter)
+		cpu_do_idle();
+#endif
+}
+
+static inline void arch_reset(char mode)
+{
+	/* First try machine specific support */
+	if (machine_is_ixdp2351()) {
+		*IXDP2351_CPLD_RESET1_REG = IXDP2351_CPLD_RESET1_MAGIC;
+		(void) *IXDP2351_CPLD_RESET1_REG;
+		*IXDP2351_CPLD_RESET1_REG = IXDP2351_CPLD_RESET1_ENABLE;
+	}
+
+	/* Use on-chip reset capability */
+	*IXP23XX_RESET0 |= IXP23XX_RST_ALL;
+}

include/asm-arm/arch-ixp23xx/time.h

+/*
+ * include/asm-arm/arch-ixp23xx/time.h
+ */

include/asm-arm/arch-ixp23xx/timex.h

+/*
+ * include/asm-arm/arch-ixp23xx/timex.h
+ *
+ * XScale architecture timex specifications
+ */
+
+#define CLOCK_TICK_RATE 75000000

include/asm-arm/arch-ixp23xx/uncompress.h

+/*
+ * include/asm-arm/arch-ixp23xx/uncompress.h
+ *
+ * Copyright (C) 2002-2004 Intel Corporation.
+ *
+ * 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.
+ */
+
+#ifndef __ASM_ARCH_UNCOMPRESS_H
+#define __ASM_ARCH_UNCOMPRESS_H
+
+#include <asm/hardware.h>
+#include <linux/serial_reg.h>
+
+#define UART_BASE	((volatile u32 *)IXP23XX_UART1_PHYS)
+
+static __inline__ void putc(char c)
+{
+	int j;
+
+	for (j = 0; j < 0x1000; j++) {
+		if (UART_BASE[UART_LSR] & UART_LSR_THRE)
+			break;
+	}
+
+	UART_BASE[UART_TX] = c;
+}
+
+static void putstr(const char *s)
+{
+	while (*s) {
+		putc(*s);
+		if (*s == '\n')
+			putc('\r');
+		s++;
+	}
+}
+
+#define arch_decomp_setup()
+#define arch_decomp_wdog()
+
+
+#endif

include/asm-arm/arch-ixp23xx/vmalloc.h

+/*
+ * include/asm-arm/arch-ixp23xx/vmalloc.h
+ *
+ * Copyright (c) 2005 MontaVista Software, Inc.
+ *
+ * NPU mappings end at 0xf0000000 and we allocate 64MB for board
+ * specific static I/O.
+ */
+
+#define VMALLOC_END	(0xec000000)