release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-iop33x/iq80331.c

   1 /*
   2  * arch/arm/mach-iop33x/iq80331.c
   3  *
   4  * Board support code for the Intel IQ80331 platform.
   5  *
   6  * Author: Dave Jiang <dave.jiang@intel.com>
   7  * Copyright (C) 2003 Intel Corp.
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License as published by the
  11  * Free Software Foundation; either version 2 of the License, or (at your
  12  * option) any later version.
  13  */
  14
  15 #include <linux/mm.h>
  16 #include <linux/init.h>
  17 #include <linux/kernel.h>
  18 #include <linux/pci.h>
  19 #include <linux/string.h>
  20 #include <linux/serial_core.h>
  21 #include <linux/serial_8250.h>
  22 #include <linux/mtd/physmap.h>
  23 #include <linux/platform_device.h>
  24 #include <linux/io.h>
  25 #include <mach/hardware.h>
  26 #include <asm/irq.h>
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/map.h>
  29 #include <asm/mach/pci.h>
  30 #include <asm/mach/time.h>
  31 #include <asm/mach-types.h>
  32 #include <asm/page.h>
  33 #include <asm/pgtable.h>
  34 #include <mach/time.h>
  35
  36 /*
  37  * IQ80331 timer tick configuration.
  38  */
  39 static void __init iq80331_timer_init(void)
  40 {
  41         /* D-Step parts run at a higher internal bus frequency */
  42         if (*IOP3XX_ATURID >= 0xa)
  43                 iop_init_time(333000000);
  44         else
  45                 iop_init_time(266000000);
  46 }
  47
  48 static struct sys_timer iq80331_timer = {
  49         .init           = iq80331_timer_init,
  50 };
  51
  52
  53 /*
  54  * IQ80331 PCI.
  55  */
  56 static int __init
  57 iq80331_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  58 {
  59         int irq;
  60
  61         if (slot == 1 && pin == 1) {
  62                 /* PCI-X Slot INTA */
  63                 irq = IRQ_IOP33X_XINT1;
  64         } else if (slot == 1 && pin == 2) {
  65                 /* PCI-X Slot INTB */
  66                 irq = IRQ_IOP33X_XINT2;
  67         } else if (slot == 1 && pin == 3) {
  68                 /* PCI-X Slot INTC */
  69                 irq = IRQ_IOP33X_XINT3;
  70         } else if (slot == 1 && pin == 4) {
  71                 /* PCI-X Slot INTD */
  72                 irq = IRQ_IOP33X_XINT0;
  73         } else if (slot == 2) {
  74                 /* GigE */
  75                 irq = IRQ_IOP33X_XINT2;
  76         } else {
  77                 printk(KERN_ERR "iq80331_pci_map_irq() called for unknown "
  78                         "device PCI:%d:%d:%d\n", dev->bus->number,
  79                         PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
  80                 irq = -1;
  81         }
  82
  83         return irq;
  84 }
  85
  86 static struct hw_pci iq80331_pci __initdata = {
  87         .swizzle        = pci_std_swizzle,
  88         .nr_controllers = 1,
  89         .setup          = iop3xx_pci_setup,
  90         .preinit        = iop3xx_pci_preinit_cond,
  91         .scan           = iop3xx_pci_scan_bus,
  92         .map_irq        = iq80331_pci_map_irq,
  93 };
  94
  95 static int __init iq80331_pci_init(void)
  96 {
  97         if ((iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE) &&
  98                 machine_is_iq80331())
  99                 pci_common_init(&iq80331_pci);
 100
 101         return 0;
 102 }
 103
 104 subsys_initcall(iq80331_pci_init);
 105
 106
 107 /*
 108  * IQ80331 machine initialisation.
 109  */
 110 static struct physmap_flash_data iq80331_flash_data = {
 111         .width          = 1,
 112 };
 113
 114 static struct resource iq80331_flash_resource = {
 115         .start          = 0xc0000000,
 116         .end            = 0xc07fffff,
 117         .flags          = IORESOURCE_MEM,
 118 };
 119
 120 static struct platform_device iq80331_flash_device = {
 121         .name           = "physmap-flash",
 122         .id             = 0,
 123         .dev            = {
 124                 .platform_data  = &iq80331_flash_data,
 125         },
 126         .num_resources  = 1,
 127         .resource       = &iq80331_flash_resource,
 128 };
 129
 130 static void __init iq80331_init_machine(void)
 131 {
 132         platform_device_register(&iop3xx_i2c0_device);
 133         platform_device_register(&iop3xx_i2c1_device);
 134         platform_device_register(&iop33x_uart0_device);
 135         platform_device_register(&iop33x_uart1_device);
 136         platform_device_register(&iq80331_flash_device);
 137         platform_device_register(&iop3xx_dma_0_channel);
 138         platform_device_register(&iop3xx_dma_1_channel);
 139         platform_device_register(&iop3xx_aau_channel);
 140 }
 141
 142 MACHINE_START(IQ80331, "Intel IQ80331")
 143         /* Maintainer: Intel Corp. */
 144         .phys_io        = 0xfefff000,
 145         .io_pg_offst    = ((0xfffff000) >> 18) & 0xfffc,
 146         .boot_params    = 0x00000100,
 147         .map_io         = iop3xx_map_io,
 148         .init_irq       = iop33x_init_irq,
 149         .timer          = &iq80331_timer,
 150         .init_machine   = iq80331_init_machine,
 151 MACHINE_END