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         "Titan PCI MEM", 0xe0000000UL, 0xe3ffffffUL, IORESOURCE_MEM
  18 };
  19
  20 /*
  21  * PMON really reserves 16MB of I/O port space but that's stupid, nothing
  22  * needs that much since allocations are limited to 256 bytes per device
  23  * anyway.  So we just claim 64kB here.
  24  */
  25 #define TITAN_IO_SIZE   0x0000ffffUL
  26 #define TITAN_IO_BASE   0xe8000000UL
  27
  28 static struct resource py_io_resource = {
  29         "Titan IO MEM", 0x00001000UL, TITAN_IO_SIZE - 1, IORESOURCE_IO,
  30 };
  31
  32 static struct pci_controller py_controller = {
  33         .pci_ops        = &titan_pci_ops,
  34         .mem_resource   = &py_mem_resource,
  35         .mem_offset     = 0x00000000UL,
  36         .io_resource    = &py_io_resource,
  37         .io_offset      = 0x00000000UL
  38 };
  39
  40 static char ioremap_failed[] __initdata = "Could not ioremap I/O port range";
  41
  42 static int __init pmc_yosemite_setup(void)
  43 {
  44         unsigned long io_v_base;
  45
  46         io_v_base = (unsigned long) ioremap(TITAN_IO_BASE, TITAN_IO_SIZE);
  47         if (!io_v_base)
  48                 panic(ioremap_failed);
  49
  50         set_io_port_base(io_v_base);
  51         TITAN_WRITE(RM9000x2_OCD_LKM7, TITAN_READ(RM9000x2_OCD_LKM7) | 1);
  52
  53         ioport_resource.end = TITAN_IO_SIZE - 1;
  54
  55         register_pci_controller(&py_controller);
  56
  57         return 0;
  58 }
  59
  60 arch_initcall(pmc_yosemite_setup);