arch/sh/drivers/pci/ops-landisk.c

   1 /*
   2  * arch/sh/drivers/pci/ops-landisk.c
   3  *
   4  * PCI initialization for the I-O DATA Device, Inc. LANDISK board
   5  *
   6  * Copyright (C) 2006 kogiidena
   7  *
   8  * May be copied or modified under the terms of the GNU General Public
   9  * License.  See linux/COPYING for more information.
  10  */
  11 #include <linux/kernel.h>
  12 #include <linux/types.h>
  13 #include <linux/init.h>
  14 #include <linux/delay.h>
  15 #include <linux/pci.h>
  16 #include "pci-sh4.h"
  17
  18 static struct resource sh7751_io_resource = {
  19         .name = "SH7751 IO",
  20         .start = SH7751_PCI_IO_BASE,
  21         .end = SH7751_PCI_IO_BASE + SH7751_PCI_IO_SIZE - 1,
  22         .flags = IORESOURCE_IO
  23 };
  24
  25 static struct resource sh7751_mem_resource = {
  26         .name = "SH7751 mem",
  27         .start = SH7751_PCI_MEMORY_BASE,
  28         .end = SH7751_PCI_MEMORY_BASE + SH7751_PCI_MEM_SIZE - 1,
  29         .flags = IORESOURCE_MEM
  30 };
  31
  32 struct pci_channel board_pci_channels[] = {
  33         {&sh4_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0x3ff},
  34         {NULL, NULL, NULL, 0, 0},
  35 };
  36
  37 static struct sh4_pci_address_map sh7751_pci_map = {
  38         .window0 = {
  39                 .base   = SH7751_CS3_BASE_ADDR,
  40                 .size   = (64 << 20),   /* 64MB */
  41         },
  42
  43         .flags = SH4_PCIC_NO_RESET,
  44 };
  45
  46 int __init pcibios_init_platform(void)
  47 {
  48         return sh7751_pcic_init(&sh7751_pci_map);
  49 }
  50
  51 int pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
  52 {
  53         /*
  54          * slot0: pin1-4 = irq5,6,7,8
  55          * slot1: pin1-4 = irq6,7,8,5
  56          * slot2: pin1-4 = irq7,8,5,6
  57          * slot3: pin1-4 = irq8,5,6,7
  58          */
  59         int irq = ((slot + pin - 1) & 0x3) + 5;
  60
  61         if ((slot | (pin - 1)) > 0x3) {
  62                 printk("PCI: Bad IRQ mapping request for slot %d pin %c\n",
  63                        slot, pin - 1 + 'A');
  64                 return -1;
  65         }
  66         return irq;
  67 }