drivers/pci/pci_sh4.c

   1 /*
   2  * SH4 PCI Controller (PCIC) for U-Boot.
   3  * (C) Dustin McIntire (dustin@sensoria.com)
   4  * (C) 2007,2008 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
   5  * (C) 2008 Yusuke Goda <goda.yusuke@renesas.com>
   6  *
   7  * u-boot/arch/sh/cpu/sh4/pci-sh4.c
   8  *
   9  * See file CREDITS for list of people who contributed to this
  10  * project.
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  25  * MA 02111-1307 USA
  26  */
  27
  28 #include <common.h>
  29
  30 #include <asm/processor.h>
  31 #include <asm/io.h>
  32 #include <asm/pci.h>
  33 #include <pci.h>
  34
  35 int pci_sh4_init(struct pci_controller *hose)
  36 {
  37         hose->first_busno = 0;
  38         hose->region_count = 0;
  39         hose->last_busno = 0xff;
  40
  41         /* PCI memory space */
  42         pci_set_region(hose->regions + 0,
  43                 CONFIG_PCI_MEM_BUS,
  44                 CONFIG_PCI_MEM_PHYS,
  45                 CONFIG_PCI_MEM_SIZE,
  46                 PCI_REGION_MEM);
  47         hose->region_count++;
  48
  49         /* PCI IO space */
  50         pci_set_region(hose->regions + 1,
  51                 CONFIG_PCI_IO_BUS,
  52                 CONFIG_PCI_IO_PHYS,
  53                 CONFIG_PCI_IO_SIZE,
  54                 PCI_REGION_IO);
  55         hose->region_count++;
  56
  57 #if defined(CONFIG_PCI_SYS_BUS)
  58         /* PCI System Memory space */
  59         pci_set_region(hose->regions + 2,
  60                 CONFIG_PCI_SYS_BUS,
  61                 CONFIG_PCI_SYS_PHYS,
  62                 CONFIG_PCI_SYS_SIZE,
  63                 PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
  64         hose->region_count++;
  65 #endif
  66
  67         udelay(1000);
  68
  69         pci_set_ops(hose,
  70                     pci_hose_read_config_byte_via_dword,
  71                     pci_hose_read_config_word_via_dword,
  72                     pci_sh4_read_config_dword,
  73                     pci_hose_write_config_byte_via_dword,
  74                     pci_hose_write_config_word_via_dword,
  75                     pci_sh4_write_config_dword);
  76
  77         pci_register_hose(hose);
  78
  79         udelay(1000);
  80
  81 #ifdef CONFIG_PCI_SCAN_SHOW
  82         printf("PCI:   Bus Dev VenId DevId Class Int\n");
  83 #endif
  84         hose->last_busno = pci_hose_scan(hose);
  85         return 0;
  86 }
  87
  88 int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev)
  89 {
  90         return 0;
  91 }
  92
  93 #ifdef CONFIG_PCI_SCAN_SHOW
  94 int pci_print_dev(struct pci_controller *hose, pci_dev_t dev)
  95 {
  96         return 1;
  97 }
  98 #endif /* CONFIG_PCI_SCAN_SHOW */