arch/ppc/platforms/pal4_pci.c

   1 /*
   2  * arch/ppc/platforms/pal4_pci.c
   3  *
   4  * PCI support for SBS Palomar IV
   5  *
   6  * Author: Dan Cox
   7  *
   8  * 2002 (c) MontaVista, Software, Inc.  This file is licensed under
   9  * the terms of the GNU General Public License version 2.  This program
  10  * is licensed "as is" without any warranty of any kind, whether express
  11  * or implied.
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/init.h>
  16 #include <linux/pci.h>
  17
  18 #include <asm/byteorder.h>
  19 #include <asm/machdep.h>
  20 #include <asm/io.h>
  21 #include <asm/pci-bridge.h>
  22 #include <asm/uaccess.h>
  23
  24 #include "cpc700.h"
  25 #include "pal4.h"
  26
  27 /* not much to this.... */
  28 static inline int __init
  29 pal4_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
  30 {
  31         if (idsel == 9)
  32                 return PAL4_ETH;
  33         else
  34                 return PAL4_INTA + (idsel - 3);
  35 }
  36
  37 void __init
  38 pal4_find_bridges(void)
  39 {
  40         struct pci_controller *hose;
  41
  42         hose = pcibios_alloc_controller();
  43         if (!hose)
  44                 return;
  45
  46         hose->first_busno = 0;
  47         hose->last_busno = 0xff;
  48         hose->pci_mem_offset = 0;
  49
  50         /* Could snatch these from the CPC700.... */
  51         pci_init_resource(&hose->io_resource,
  52                           0x0,
  53                           0x03ffffff,
  54                           IORESOURCE_IO,
  55                           "PCI host bridge");
  56
  57         pci_init_resource(&hose->mem_resources[0],
  58                           0x90000000,
  59                           0x9fffffff,
  60                           IORESOURCE_MEM,
  61                           "PCI host bridge");
  62
  63         hose->io_space.start = 0x00800000;
  64         hose->io_space.end = 0x03ffffff;
  65         hose->mem_space.start = 0x90000000;
  66         hose->mem_space.end = 0x9fffffff;
  67         hose->io_base_virt = (void *) 0xf8000000;
  68
  69         setup_indirect_pci(hose, CPC700_PCI_CONFIG_ADDR,
  70                            CPC700_PCI_CONFIG_DATA);
  71
  72         hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
  73
  74         ppc_md.pci_swizzle = common_swizzle;
  75         ppc_md.pci_map_irq = pal4_map_irq;
  76 }