release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/pci/pci-emma2rh.c

   1 /*
   2  *  Copyright (C) NEC Electronics Corporation 2004-2006
   3  *
   4  *  This file is based on the arch/mips/ddb5xxx/ddb5477/pci.c
   5  *
   6  *      Copyright 2001 MontaVista Software Inc.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #include <linux/kernel.h>
  24 #include <linux/init.h>
  25 #include <linux/types.h>
  26 #include <linux/pci.h>
  27
  28 #include <asm/bootinfo.h>
  29
  30 #include <asm/emma/emma2rh.h>
  31
  32 static struct resource pci_io_resource = {
  33         .name = "pci IO space",
  34         .start = EMMA2RH_PCI_IO_BASE,
  35         .end = EMMA2RH_PCI_IO_BASE + EMMA2RH_PCI_IO_SIZE - 1,
  36         .flags = IORESOURCE_IO,
  37 };
  38
  39 static struct resource pci_mem_resource = {
  40         .name = "pci memory space",
  41         .start = EMMA2RH_PCI_MEM_BASE,
  42         .end = EMMA2RH_PCI_MEM_BASE + EMMA2RH_PCI_MEM_SIZE - 1,
  43         .flags = IORESOURCE_MEM,
  44 };
  45
  46 extern struct pci_ops emma2rh_pci_ops;
  47
  48 static struct pci_controller emma2rh_pci_controller = {
  49         .pci_ops = &emma2rh_pci_ops,
  50         .mem_resource = &pci_mem_resource,
  51         .io_resource = &pci_io_resource,
  52         .mem_offset = -0x04000000,
  53         .io_offset = 0,
  54 };
  55
  56 static void __init emma2rh_pci_init(void)
  57 {
  58         /* setup PCI interface */
  59         emma2rh_out32(EMMA2RH_PCI_ARBIT_CTR, 0x70f);
  60
  61         emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, 0x80000a18);
  62         emma2rh_out32(EMMA2RH_PCI_CONFIG_BASE + PCI_COMMAND,
  63                       PCI_STATUS_DEVSEL_MEDIUM | PCI_STATUS_CAP_LIST |
  64                       PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
  65         emma2rh_out32(EMMA2RH_PCI_CONFIG_BASE + PCI_BASE_ADDRESS_0, 0x10000000);
  66         emma2rh_out32(EMMA2RH_PCI_CONFIG_BASE + PCI_BASE_ADDRESS_1, 0x00000000);
  67
  68         emma2rh_out32(EMMA2RH_PCI_IWIN0_CTR, 0x12000000 | 0x218);
  69         emma2rh_out32(EMMA2RH_PCI_IWIN1_CTR, 0x18000000 | 0x600);
  70         emma2rh_out32(EMMA2RH_PCI_INIT_ESWP, 0x00000200);
  71
  72         emma2rh_out32(EMMA2RH_PCI_TWIN_CTR, 0x00009200);
  73         emma2rh_out32(EMMA2RH_PCI_TWIN_BADR, 0x00000000);
  74         emma2rh_out32(EMMA2RH_PCI_TWIN0_DADR, 0x00000000);
  75         emma2rh_out32(EMMA2RH_PCI_TWIN1_DADR, 0x00000000);
  76 }
  77
  78 static int __init emma2rh_pci_setup(void)
  79 {
  80         emma2rh_pci_init();
  81         register_pci_controller(&emma2rh_pci_controller);
  82         return 0;
  83 }
  84
  85 arch_initcall(emma2rh_pci_setup);