src/pirtable.c

   1 // PIR table generation (for emulators)
   2 //
   3 // Copyright (C) 2008  Kevin O'Connor <kevin@koconnor.net>
   4 // Copyright (C) 2002  MandrakeSoft S.A.
   5 //
   6 // This file may be distributed under the terms of the GNU GPLv3 license.
   7
   8 #include "pci.h" // struct pir_header
   9 #include "util.h" // checksum
  10 #include "biosvar.h" // SET_EBDA
  11
  12 struct pir_table {
  13     struct pir_header pir;
  14     struct pir_slot slots[6];
  15 } PACKED PIR_TABLE __aligned(16) = {
  16 #if CONFIG_PIRTABLE
  17     .pir = {
  18         .version = 0x0100,
  19         .size = sizeof(struct pir_table),
  20         .router_devfunc = 0x08,
  21         .compatible_devid = 0x122e8086,
  22     },
  23     .slots = {
  24         {
  25             // first slot entry PCI-to-ISA (embedded)
  26             .dev = 1<<3,
  27             .links = {
  28                 {.link = 0x60, .bitmap = 0xdef8}, // INTA#
  29                 {.link = 0x61, .bitmap = 0xdef8}, // INTB#
  30                 {.link = 0x62, .bitmap = 0xdef8}, // INTC#
  31                 {.link = 0x63, .bitmap = 0xdef8}, // INTD#
  32             },
  33             .slot_nr = 0, // embedded
  34         }, {
  35             // second slot entry: 1st PCI slot
  36             .dev = 2<<3,
  37             .links = {
  38                 {.link = 0x61, .bitmap = 0xdef8}, // INTA#
  39                 {.link = 0x62, .bitmap = 0xdef8}, // INTB#
  40                 {.link = 0x63, .bitmap = 0xdef8}, // INTC#
  41                 {.link = 0x60, .bitmap = 0xdef8}, // INTD#
  42             },
  43             .slot_nr = 1,
  44         }, {
  45             // third slot entry: 2nd PCI slot
  46             .dev = 3<<3,
  47             .links = {
  48                 {.link = 0x62, .bitmap = 0xdef8}, // INTA#
  49                 {.link = 0x63, .bitmap = 0xdef8}, // INTB#
  50                 {.link = 0x60, .bitmap = 0xdef8}, // INTC#
  51                 {.link = 0x61, .bitmap = 0xdef8}, // INTD#
  52             },
  53             .slot_nr = 2,
  54         }, {
  55             // 4th slot entry: 3rd PCI slot
  56             .dev = 4<<3,
  57             .links = {
  58                 {.link = 0x63, .bitmap = 0xdef8}, // INTA#
  59                 {.link = 0x60, .bitmap = 0xdef8}, // INTB#
  60                 {.link = 0x61, .bitmap = 0xdef8}, // INTC#
  61                 {.link = 0x62, .bitmap = 0xdef8}, // INTD#
  62             },
  63             .slot_nr = 3,
  64         }, {
  65             // 5th slot entry: 4rd PCI slot
  66             .dev = 5<<3,
  67             .links = {
  68                 {.link = 0x60, .bitmap = 0xdef8}, // INTA#
  69                 {.link = 0x61, .bitmap = 0xdef8}, // INTB#
  70                 {.link = 0x62, .bitmap = 0xdef8}, // INTC#
  71                 {.link = 0x63, .bitmap = 0xdef8}, // INTD#
  72             },
  73             .slot_nr = 4,
  74         }, {
  75             // 6th slot entry: 5rd PCI slot
  76             .dev = 6<<3,
  77             .links = {
  78                 {.link = 0x61, .bitmap = 0xdef8}, // INTA#
  79                 {.link = 0x62, .bitmap = 0xdef8}, // INTB#
  80                 {.link = 0x63, .bitmap = 0xdef8}, // INTC#
  81                 {.link = 0x60, .bitmap = 0xdef8}, // INTD#
  82             },
  83             .slot_nr = 5,
  84         },
  85     }
  86 #endif // CONFIG_PIRTABLE
  87 };
  88
  89 void
  90 create_pirtable()
  91 {
  92     if (! CONFIG_PIRTABLE)
  93         return;
  94
  95     dprintf(3, "init PIR table\n");
  96
  97     PIR_TABLE.pir.signature = PIR_SIGNATURE;
  98     PIR_TABLE.pir.checksum = -checksum((u8*)&PIR_TABLE, sizeof(PIR_TABLE));
  99     SET_EBDA(pir_loc, &PIR_TABLE.pir);
 100 }