/*
* 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
