release/src-rt-6.x/linux/linux-2.6/arch/mips/gt64120/wrppmc/pci.c

   1 /*
   2  * pci.c: GT64120 PCI support.
   3  *
   4  * Copyright (C) 2006, Wind River System Inc. Rongkai.Zhan <rongkai.zhan@windriver.com>
   5  *
   6  * This file is subject to the terms and conditions of the GNU General Public
   7  * License.  See the file "COPYING" in the main directory of this archive
   8  * for more details.
   9  */
  10 #include <linux/init.h>
  11 #include <linux/types.h>
  12 #include <linux/pci.h>
  13 #include <linux/kernel.h>
  14 #include <asm/gt64120.h>
  15
  16 extern struct pci_ops gt64xxx_pci0_ops;
  17
  18 static struct resource pci0_io_resource = {
  19         .name  = "pci_0 io",
  20         .start = GT_PCI_IO_BASE,
  21         .end   = GT_PCI_IO_BASE + GT_PCI_IO_SIZE - 1,
  22         .flags = IORESOURCE_IO,
  23 };
  24
  25 static struct resource pci0_mem_resource = {
  26         .name  = "pci_0 memory",
  27         .start = GT_PCI_MEM_BASE,
  28         .end   = GT_PCI_MEM_BASE + GT_PCI_MEM_SIZE - 1,
  29         .flags = IORESOURCE_MEM,
  30 };
  31
  32 static struct pci_controller hose_0 = {
  33         .pci_ops        = &gt64xxx_pci0_ops,
  34         .io_resource    = &pci0_io_resource,
  35         .mem_resource   = &pci0_mem_resource,
  36 };
  37
  38 static int __init gt64120_pci_init(void)
  39 {
  40         u32 tmp;
  41
  42         tmp = GT_READ(GT_PCI0_CMD_OFS);         /* Huh??? -- Ralf  */
  43         tmp = GT_READ(GT_PCI0_BARE_OFS);
  44
  45         /* reset the whole PCI I/O space range */
  46         ioport_resource.start = GT_PCI_IO_BASE;
  47         ioport_resource.end = GT_PCI_IO_BASE + GT_PCI_IO_SIZE - 1;
  48
  49         register_pci_controller(&hose_0);
  50         return 0;
  51 }
  52
  53 arch_initcall(gt64120_pci_init);