arch/mips/pci/pci-yosemite.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
   7  */
   8 #include <linux/init.h>
   9 #include <linux/kernel.h>
  10 #include <linux/types.h>
  11 #include <linux/pci.h>
  12 #include <asm/titan_dep.h>
  13
  14 extern struct pci_ops titan_pci_ops;
  15
  16 static struct resource py_mem_resource = {
  17         .start  = 0xe0000000UL,
  18         .end    = 0xe3ffffffUL,
  19         .name   = "Titan PCI MEM",
  20         .flags  = IORESOURCE_MEM
  21 };
  22
  23 /*
  24  * PMON really reserves 16MB of I/O port space but that's stupid, nothing
  25  * needs that much since allocations are limited to 256 bytes per device
  26  * anyway.  So we just claim 64kB here.
  27  */
  28 #define TITAN_IO_SIZE   0x0000ffffUL
  29 #define TITAN_IO_BASE   0xe8000000UL
  30
  31 static struct resource py_io_resource = {
  32         .start  = 0x00001000UL,
  33         .end    = TITAN_IO_SIZE - 1,
  34         .name   = "Titan IO MEM",
  35         .flags  = IORESOURCE_IO,
  36 };
  37
  38 static struct pci_controller py_controller = {
  39         .pci_ops        = &titan_pci_ops,
  40         .mem_resource   = &py_mem_resource,
  41         .mem_offset     = 0x00000000UL,
  42         .io_resource    = &py_io_resource,
  43         .io_offset      = 0x00000000UL
  44 };
  45
  46 static char ioremap_failed[] __initdata = "Could not ioremap I/O port range";
  47
  48 static int __init pmc_yosemite_setup(void)
  49 {
  50         unsigned long io_v_base;
  51
  52         io_v_base = (unsigned long) ioremap(TITAN_IO_BASE, TITAN_IO_SIZE);
  53         if (!io_v_base)
  54                 panic(ioremap_failed);
  55
  56         set_io_port_base(io_v_base);
  57         py_controller.io_map_base = io_v_base;
  58         TITAN_WRITE(RM9000x2_OCD_LKM7, TITAN_READ(RM9000x2_OCD_LKM7) | 1);
  59
  60         ioport_resource.end = TITAN_IO_SIZE - 1;
  61
  62         register_pci_controller(&py_controller);
  63
  64         return 0;
  65 }
  66
  67 arch_initcall(pmc_yosemite_setup);