Logo Search packages:      
Sourcecode: linux-2.6 version File versions

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/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_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/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 __init 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 struct physmap_flash_data roadrunner_flash_data = {
      .width            = 2,
};

static struct resource roadrunner_flash_resource = {
      .start            = 0x90000000,
      .end        = 0x93ffffff,
      .flags            = IORESOURCE_MEM,
};

static struct platform_device roadrunner_flash = {
      .name       = "physmap-flash",
      .id         = 0,
      .dev        = {
            .platform_data    = &roadrunner_flash_data,
      },
      .num_resources    = 1,
      .resource   = &roadrunner_flash_resource,
};

static void __init roadrunner_init(void)
{
      platform_device_register(&roadrunner_flash);

      /*
       * 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

Generated by  Doxygen 1.6.0   Back to index