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iq80321.c

/*
 * arch/arm/mach-iop32x/iq80321.c
 *
 * Board support code for the Intel IQ80321 platform.
 *
 * Author: Rory Bolt <rorybolt@pacbell.net>
 * Copyright (C) 2002 Rory Bolt
 * Copyright (C) 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.
 */

#include <linux/mm.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
#include <linux/mtd/physmap.h>
#include <linux/platform_device.h>
#include <asm/hardware.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/pci.h>
#include <asm/mach/time.h>
#include <asm/mach-types.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/arch/time.h>

/*
 * IQ80321 timer tick configuration.
 */
static void __init iq80321_timer_init(void)
{
      /* 33.333 MHz crystal.  */
      iop_init_time(200000000);
}

static struct sys_timer iq80321_timer = {
      .init       = iq80321_timer_init,
      .offset           = iop_gettimeoffset,
};


/*
 * IQ80321 I/O.
 */
static struct map_desc iq80321_io_desc[] __initdata = {
      {     /* on-board devices */
            .virtual    = IQ80321_UART,
            .pfn        = __phys_to_pfn(IQ80321_UART),
            .length           = 0x00100000,
            .type       = MT_DEVICE,
      },
};

void __init iq80321_map_io(void)
{
      iop3xx_map_io();
      iotable_init(iq80321_io_desc, ARRAY_SIZE(iq80321_io_desc));
}


/*
 * IQ80321 PCI.
 */
static int __init
iq80321_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
      int irq;

      if ((slot == 2 || slot == 6) && pin == 1) {
            /* PCI-X Slot INTA */
            irq = IRQ_IOP32X_XINT2;
      } else if ((slot == 2 || slot == 6) && pin == 2) {
            /* PCI-X Slot INTA */
            irq = IRQ_IOP32X_XINT3;
      } else if ((slot == 2 || slot == 6) && pin == 3) {
            /* PCI-X Slot INTA */
            irq = IRQ_IOP32X_XINT0;
      } else if ((slot == 2 || slot == 6) && pin == 4) {
            /* PCI-X Slot INTA */
            irq = IRQ_IOP32X_XINT1;
      } else if (slot == 4 || slot == 8) {
            /* Gig-E */
            irq = IRQ_IOP32X_XINT0;
      } else {
            printk(KERN_ERR "iq80321_pci_map_irq() called for unknown "
                  "device PCI:%d:%d:%d\n", dev->bus->number,
                  PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
            irq = -1;
      }

      return irq;
}

static struct hw_pci iq80321_pci __initdata = {
      .swizzle    = pci_std_swizzle,
      .nr_controllers = 1,
      .setup            = iop3xx_pci_setup,
      .preinit    = iop3xx_pci_preinit_cond,
      .scan       = iop3xx_pci_scan_bus,
      .map_irq    = iq80321_pci_map_irq,
};

static int __init iq80321_pci_init(void)
{
      if ((iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE) &&
            machine_is_iq80321())
            pci_common_init(&iq80321_pci);

      return 0;
}

subsys_initcall(iq80321_pci_init);


/*
 * IQ80321 machine initialisation.
 */
static struct physmap_flash_data iq80321_flash_data = {
      .width            = 1,
};

static struct resource iq80321_flash_resource = {
      .start            = 0xf0000000,
      .end        = 0xf07fffff,
      .flags            = IORESOURCE_MEM,
};

static struct platform_device iq80321_flash_device = {
      .name       = "physmap-flash",
      .id         = 0,
      .dev        = {
            .platform_data    = &iq80321_flash_data,
      },
      .num_resources    = 1,
      .resource   = &iq80321_flash_resource,
};

static struct plat_serial8250_port iq80321_serial_port[] = {
      {
            .mapbase    = IQ80321_UART,
            .membase    = (char *)IQ80321_UART,
            .irq        = IRQ_IOP32X_XINT1,
            .flags            = UPF_SKIP_TEST,
            .iotype           = UPIO_MEM,
            .regshift   = 0,
            .uartclk    = 1843200,
      },
      { },
};

static struct resource iq80321_uart_resource = {
      .start            = IQ80321_UART,
      .end        = IQ80321_UART + 7,
      .flags            = IORESOURCE_MEM,
};

static struct platform_device iq80321_serial_device = {
      .name       = "serial8250",
      .id         = PLAT8250_DEV_PLATFORM,
      .dev        = {
            .platform_data          = iq80321_serial_port,
      },
      .num_resources    = 1,
      .resource   = &iq80321_uart_resource,
};

static void __init iq80321_init_machine(void)
{
      platform_device_register(&iop3xx_i2c0_device);
      platform_device_register(&iop3xx_i2c1_device);
      platform_device_register(&iq80321_flash_device);
      platform_device_register(&iq80321_serial_device);
      platform_device_register(&iop3xx_dma_0_channel);
      platform_device_register(&iop3xx_dma_1_channel);
      platform_device_register(&iop3xx_aau_channel);
}

MACHINE_START(IQ80321, "Intel IQ80321")
      /* Maintainer: Intel Corp. */
      .phys_io    = IQ80321_UART,
      .io_pg_offst      = ((IQ80321_UART) >> 18) & 0xfffc,
      .boot_params      = 0xa0000100,
      .map_io           = iq80321_map_io,
      .init_irq   = iop32x_init_irq,
      .timer            = &iq80321_timer,
      .init_machine     = iq80321_init_machine,
MACHINE_END

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