ls-caps-vendor.c

   1 /*
   2  *      The PCI Utilities -- Show Vendor-specific Capabilities
   3  *
   4  *      Copyright (c) 2014 Gerd Hoffmann <kraxel@redhat.com>
   5  *
   6  *      Can be freely distributed and used under the terms of the GNU GPL.
   7  */
   8
   9 #include <stdio.h>
  10 #include <string.h>
  11
  12 #include "lspci.h"
  13
  14 static int
  15 show_vendor_caps_virtio(struct device *d, int where, int cap)
  16 {
  17   int length = BITS(cap, 0, 8);
  18   int type = BITS(cap, 8, 8);
  19   char *tname;
  20
  21   if (length < 16)
  22     return 0;
  23   if (!config_fetch(d, where, length))
  24     return 0;
  25
  26   switch (type)
  27     {
  28     case 1:
  29       tname = "CommonCfg";
  30       break;
  31     case 2:
  32       tname = "Notify";
  33       break;
  34     case 3:
  35       tname = "ISR";
  36       break;
  37     case 4:
  38       tname = "DeviceCfg";
  39       break;
  40     default:
  41       tname = "<unknown>";
  42       break;
  43     }
  44
  45   printf("VirtIO: %s\n", tname);
  46
  47   if (verbose < 2)
  48     return 1;
  49
  50   printf("\t\tBAR=%d offset=%08x size=%08x",
  51          get_conf_byte(d, where +  4),
  52          get_conf_long(d, where +  8),
  53          get_conf_long(d, where + 12));
  54
  55   if (type == 2 && length >= 20)
  56     printf(" multiplier=%08x", get_conf_long(d, where+16));
  57
  58   printf("\n");
  59   return 1;
  60 }
  61
  62 static int
  63 do_show_vendor_caps(struct device *d, int where, int cap)
  64 {
  65   switch (get_conf_word(d, PCI_VENDOR_ID))
  66     {
  67     case 0x1af4: /* Red Hat */
  68       if (get_conf_word(d, PCI_DEVICE_ID) >= 0x1000 &&
  69           get_conf_word(d, PCI_DEVICE_ID) <= 0x107f)
  70         return show_vendor_caps_virtio(d, where, cap);
  71       break;
  72     }
  73   return 0;
  74 }
  75
  76 void
  77 show_vendor_caps(struct device *d, int where, int cap)
  78 {
  79   printf("Vendor Specific Information: ");
  80   if (!do_show_vendor_caps(d, where, cap))
  81     printf("Len=%02x <?>\n", BITS(cap, 0, 8));
  82 }