arch/x86/cpu/ivybridge/pci.c

   1 /*
   2  * Copyright (c) 2011 The Chromium OS Authors.
   3  * (C) Copyright 2008,2009
   4  * Graeme Russ, <graeme.russ@gmail.com>
   5  *
   6  * (C) Copyright 2002
   7  * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
   8  *
   9  * SPDX-License-Identifier:     GPL-2.0+
  10  */
  11
  12 #include <common.h>
  13 #include <pci.h>
  14 #include <asm/pci.h>
  15
  16 static void config_pci_bridge(struct pci_controller *hose, pci_dev_t dev,
  17                               struct pci_config_table *table)
  18 {
  19         u8 secondary;
  20
  21         hose->read_byte(hose, dev, PCI_SECONDARY_BUS, &secondary);
  22         if (secondary != 0)
  23                 pci_hose_scan_bus(hose, secondary);
  24 }
  25
  26 static struct pci_config_table pci_ivybridge_config_table[] = {
  27         /* vendor, device, class, bus, dev, func */
  28         { PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_BRIDGE_PCI,
  29                 PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, &config_pci_bridge },
  30         {}
  31 };
  32
  33 void board_pci_setup_hose(struct pci_controller *hose)
  34 {
  35         hose->config_table = pci_ivybridge_config_table;
  36         hose->first_busno = 0;
  37         hose->last_busno = 0;
  38
  39         /* PCI memory space */
  40         pci_set_region(hose->regions + 0,
  41                        CONFIG_PCI_MEM_BUS,
  42                        CONFIG_PCI_MEM_PHYS,
  43                        CONFIG_PCI_MEM_SIZE,
  44                        PCI_REGION_MEM);
  45
  46         /* PCI IO space */
  47         pci_set_region(hose->regions + 1,
  48                        CONFIG_PCI_IO_BUS,
  49                        CONFIG_PCI_IO_PHYS,
  50                        CONFIG_PCI_IO_SIZE,
  51                        PCI_REGION_IO);
  52
  53         pci_set_region(hose->regions + 2,
  54                        CONFIG_PCI_PREF_BUS,
  55                        CONFIG_PCI_PREF_PHYS,
  56                        CONFIG_PCI_PREF_SIZE,
  57                        PCI_REGION_PREFETCH);
  58
  59         hose->region_count = 3;
  60 }