LXR uboot/drivers/pci/pci

   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 * SPDX-License-Identifier:     GPL-2.0+
  10 */
  11
  12#include <common.h>
  13
  14#include <asm/processor.h>
  15#include <asm/io.h>
  16#include <asm/pci.h>
  17#include <pci.h>
  18
  19int pci_sh4_init(struct pci_controller *hose)
  20{
  21        hose->first_busno = 0;
  22        hose->region_count = 0;
  23        hose->last_busno = 0xff;
  24
  25        /* PCI memory space */
  26        pci_set_region(hose->regions + 0,
  27                CONFIG_PCI_MEM_BUS,
  28                CONFIG_PCI_MEM_PHYS,
  29                CONFIG_PCI_MEM_SIZE,
  30                PCI_REGION_MEM);
  31        hose->region_count++;
  32
  33        /* PCI IO space */
  34        pci_set_region(hose->regions + 1,
  35                CONFIG_PCI_IO_BUS,
  36                CONFIG_PCI_IO_PHYS,
  37                CONFIG_PCI_IO_SIZE,
  38                PCI_REGION_IO);
  39        hose->region_count++;
  40
  41#if defined(CONFIG_PCI_SYS_BUS)
  42        /* PCI System Memory space */
  43        pci_set_region(hose->regions + 2,
  44                CONFIG_PCI_SYS_BUS,
  45                CONFIG_PCI_SYS_PHYS,
  46                CONFIG_PCI_SYS_SIZE,
  47                PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
  48        hose->region_count++;
  49#endif
  50
  51        udelay(1000);
  52
  53        pci_set_ops(hose,
  54                    pci_hose_read_config_byte_via_dword,
  55                    pci_hose_read_config_word_via_dword,
  56                    pci_sh4_read_config_dword,
  57                    pci_hose_write_config_byte_via_dword,
  58                    pci_hose_write_config_word_via_dword,
  59                    pci_sh4_write_config_dword);
  60
  61        pci_register_hose(hose);
  62
  63        udelay(1000);
  64
  65#ifdef CONFIG_PCI_SCAN_SHOW
  66        printf("PCI:   Bus Dev VenId DevId Class Int\n");
  67#endif
  68        hose->last_busno = pci_hose_scan(hose);
  69        return 0;
  70}
  71
  72int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev)
  73{
  74        return 0;
  75}
  76
  77#ifdef CONFIG_PCI_SCAN_SHOW
  78int pci_print_dev(struct pci_controller *hose, pci_dev_t dev)
  79{
  80        return 1;
  81}
  82#endif /* CONFIG_PCI_SCAN_SHOW */
  83