LXR linux/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
  32static 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
  39static 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
  46extern struct pci_ops emma2rh_pci_ops;
  47
  48static 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
  56static 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
  78static int __init emma2rh_pci_setup(void)
  79{
  80        emma2rh_pci_init();
  81        register_pci_controller(&emma2rh_pci_controller);
  82        return 0;
  83}
  84
  85arch_initcall(emma2rh_pci_setup);
  86