arch/ppc/platforms/pal4_pci.c

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