arch/mips/pci/pci-lasat.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2000, 2001, 04 Keith M Wesolowski
   7  */
   8 #include <linux/init.h>
   9 #include <linux/kernel.h>
  10 #include <linux/pci.h>
  11 #include <linux/types.h>
  12
  13 #include <asm/lasat/lasat.h>
  14
  15 #include <irq.h>
  16
  17 extern struct pci_ops nile4_pci_ops;
  18 extern struct pci_ops gt64xxx_pci0_ops;
  19 static struct resource lasat_pci_mem_resource = {
  20         .name   = "LASAT PCI MEM",
  21         .start  = 0x18000000,
  22         .end    = 0x19ffffff,
  23         .flags  = IORESOURCE_MEM,
  24 };
  25
  26 static struct resource lasat_pci_io_resource = {
  27         .name   = "LASAT PCI IO",
  28         .start  = 0x1a000000,
  29         .end    = 0x1bffffff,
  30         .flags  = IORESOURCE_IO,
  31 };
  32
  33 static struct pci_controller lasat_pci_controller = {
  34         .mem_resource   = &lasat_pci_mem_resource,
  35         .io_resource    = &lasat_pci_io_resource,
  36 };
  37
  38 static int __init lasat_pci_setup(void)
  39 {
  40         printk(KERN_DEBUG "PCI: starting\n");
  41
  42         if (IS_LASAT_200())
  43                 lasat_pci_controller.pci_ops = &nile4_pci_ops;
  44         else
  45                 lasat_pci_controller.pci_ops = &gt64xxx_pci0_ops;
  46
  47         register_pci_controller(&lasat_pci_controller);
  48
  49         return 0;
  50 }
  51
  52 arch_initcall(lasat_pci_setup);
  53
  54 #define LASAT_IRQ_ETH1   (LASAT_IRQ_BASE + 0)
  55 #define LASAT_IRQ_ETH0   (LASAT_IRQ_BASE + 1)
  56 #define LASAT_IRQ_HDC    (LASAT_IRQ_BASE + 2)
  57 #define LASAT_IRQ_COMP   (LASAT_IRQ_BASE + 3)
  58 #define LASAT_IRQ_HDLC   (LASAT_IRQ_BASE + 4)
  59 #define LASAT_IRQ_PCIA   (LASAT_IRQ_BASE + 5)
  60 #define LASAT_IRQ_PCIB   (LASAT_IRQ_BASE + 6)
  61 #define LASAT_IRQ_PCIC   (LASAT_IRQ_BASE + 7)
  62 #define LASAT_IRQ_PCID   (LASAT_IRQ_BASE + 8)
  63
  64 int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  65 {
  66         switch (slot) {
  67         case 1:
  68         case 2:
  69         case 3:
  70                 return LASAT_IRQ_PCIA + (((slot-1) + (pin-1)) % 4);
  71         case 4:
  72                 return LASAT_IRQ_ETH1;   /* Ethernet 1 (LAN 2) */
  73         case 5:
  74                 return LASAT_IRQ_ETH0;   /* Ethernet 0 (LAN 1) */
  75         case 6:
  76                 return LASAT_IRQ_HDC;    /* IDE controller */
  77         default:
  78                 return 0xff;            /* Illegal */
  79         }
  80
  81         return -1;
  82 }
  83
  84 /* Do platform specific device initialization at pci_enable_device() time */
  85 int pcibios_plat_dev_init(struct pci_dev *dev)
  86 {
  87         return 0;
  88 }