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
  11 struct pir_table {
  12     struct pir_header pir;
  13     struct pir_slot slots[6];
  14 } PACKED PIR_TABLE __attribute__((aligned(16))) = {
  15 #if CONFIG_PIRTABLE
  16     .pir = {
  17         .version = 0x0100,
  18         .size = sizeof(struct pir_table),
  19         .router_devfunc = 0x08,
  20         .compatible_devid = 0x122e8086,
  21     },
  22     .slots = {
  23         {
  24             // first slot entry PCI-to-ISA (embedded)
  25             .dev = 1<<3,
  26             .links = {
  27                 {.link = 0x60, .bitmap = 0xdef8}, // INTA#
  28                 {.link = 0x61, .bitmap = 0xdef8}, // INTB#
  29                 {.link = 0x62, .bitmap = 0xdef8}, // INTC#
  30                 {.link = 0x63, .bitmap = 0xdef8}, // INTD#
  31             },
  32             .slot_nr = 0, // embedded
  33         }, {
  34             // second slot entry: 1st PCI slot
  35             .dev = 2<<3,
  36             .links = {
  37                 {.link = 0x61, .bitmap = 0xdef8}, // INTA#
  38                 {.link = 0x62, .bitmap = 0xdef8}, // INTB#
  39                 {.link = 0x63, .bitmap = 0xdef8}, // INTC#
  40                 {.link = 0x60, .bitmap = 0xdef8}, // INTD#
  41             },
  42             .slot_nr = 1,
  43         }, {
  44             // third slot entry: 2nd PCI slot
  45             .dev = 3<<3,
  46             .links = {
  47                 {.link = 0x62, .bitmap = 0xdef8}, // INTA#
  48                 {.link = 0x63, .bitmap = 0xdef8}, // INTB#
  49                 {.link = 0x60, .bitmap = 0xdef8}, // INTC#
  50                 {.link = 0x61, .bitmap = 0xdef8}, // INTD#
  51             },
  52             .slot_nr = 2,
  53         }, {
  54             // 4th slot entry: 3rd PCI slot
  55             .dev = 4<<3,
  56             .links = {
  57                 {.link = 0x63, .bitmap = 0xdef8}, // INTA#
  58                 {.link = 0x60, .bitmap = 0xdef8}, // INTB#
  59                 {.link = 0x61, .bitmap = 0xdef8}, // INTC#
  60                 {.link = 0x62, .bitmap = 0xdef8}, // INTD#
  61             },
  62             .slot_nr = 3,
  63         }, {
  64             // 5th slot entry: 4rd PCI slot
  65             .dev = 5<<3,
  66             .links = {
  67                 {.link = 0x60, .bitmap = 0xdef8}, // INTA#
  68                 {.link = 0x61, .bitmap = 0xdef8}, // INTB#
  69                 {.link = 0x62, .bitmap = 0xdef8}, // INTC#
  70                 {.link = 0x63, .bitmap = 0xdef8}, // INTD#
  71             },
  72             .slot_nr = 4,
  73         }, {
  74             // 6th slot entry: 5rd PCI slot
  75             .dev = 6<<3,
  76             .links = {
  77                 {.link = 0x61, .bitmap = 0xdef8}, // INTA#
  78                 {.link = 0x62, .bitmap = 0xdef8}, // INTB#
  79                 {.link = 0x63, .bitmap = 0xdef8}, // INTC#
  80                 {.link = 0x60, .bitmap = 0xdef8}, // INTD#
  81             },
  82             .slot_nr = 5,
  83         },
  84     }
  85 #endif // CONFIG_PIRTABLE
  86 };
  87
  88 void
  89 create_pirtable()
  90 {
  91     if (! CONFIG_PIRTABLE)
  92         return;
  93
  94     PIR_TABLE.pir.signature = PIR_SIGNATURE;
  95     PIR_TABLE.pir.checksum = -checksum((u8*)&PIR_TABLE, sizeof(PIR_TABLE));
  96     SET_EBDA(pir_loc, (u32)&PIR_TABLE);
  97 }