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

   1 /*
   2  * arch/sh/drivers/pci/ops-titan.c
   3  *
   4  * Ported to new API by Paul Mundt <lethal@linux-sh.org>
   5  *
   6  * Modified from ops-snapgear.c written by  David McCullough
   7  * Highly leveraged from pci-bigsur.c, written by Dustin McIntire.
   8  *
   9  * May be copied or modified under the terms of the GNU General Public
  10  * License.  See linux/COPYING for more information.
  11  *
  12  * PCI initialization for the Titan boards
  13  */
  14 #include <linux/kernel.h>
  15 #include <linux/types.h>
  16 #include <linux/init.h>
  17 #include <linux/pci.h>
  18 #include <asm/io.h>
  19 #include <asm/titan.h>
  20 #include "pci-sh4.h"
  21
  22 int __init pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin)
  23 {
  24         int irq = -1;
  25
  26         switch (slot) {
  27         case 0: irq = TITAN_IRQ_WAN;   break;   /* eth0 (WAN) */
  28         case 1: irq = TITAN_IRQ_LAN;   break;   /* eth1 (LAN) */
  29         case 2: irq = TITAN_IRQ_MPCIA; break;   /* mPCI A */
  30         case 3: irq = TITAN_IRQ_MPCIB; break;   /* mPCI B */
  31         case 4: irq = TITAN_IRQ_USB;   break;   /* USB */
  32         default:
  33                 printk(KERN_INFO "PCI: Bad IRQ mapping "
  34                                  "request for slot %d\n", slot);
  35                 return -1;
  36         }
  37
  38         printk("PCI: Mapping TITAN IRQ for slot %d, pin %c to irq %d\n",
  39                 slot, pin - 1 + 'A', irq);
  40
  41         return irq;
  42 }
  43
  44 static struct resource sh7751_io_resource = {
  45         .name   = "SH7751_IO",
  46         .start  = SH7751_PCI_IO_BASE,
  47         .end    = SH7751_PCI_IO_BASE + SH7751_PCI_IO_SIZE - 1,
  48         .flags  = IORESOURCE_IO
  49 };
  50
  51 static struct resource sh7751_mem_resource = {
  52         .name   = "SH7751_mem",
  53         .start  = SH7751_PCI_MEMORY_BASE,
  54         .end    = SH7751_PCI_MEMORY_BASE + SH7751_PCI_MEM_SIZE - 1,
  55         .flags  = IORESOURCE_MEM
  56 };
  57
  58 struct pci_channel board_pci_channels[] = {
  59         { &sh4_pci_ops, &sh7751_io_resource, &sh7751_mem_resource, 0, 0xff },
  60         { NULL, NULL, NULL, 0, 0 },
  61 };
  62 EXPORT_SYMBOL(board_pci_channels);
  63
  64 static struct sh4_pci_address_map sh7751_pci_map = {
  65         .window0        = {
  66                 .base   = SH7751_CS2_BASE_ADDR,
  67                 .size   = SH7751_MEM_REGION_SIZE*2,     /* cs2 and cs3 */
  68         },
  69
  70         .window1        = {
  71                 .base   = SH7751_CS2_BASE_ADDR,
  72                 .size   = SH7751_MEM_REGION_SIZE*2,
  73         },
  74
  75         .flags  = SH4_PCIC_NO_RESET,
  76 };
  77
  78 int __init pcibios_init_platform(void)
  79 {
  80         return sh7751_pcic_init(&sh7751_pci_map);
  81 }