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 v2+.
   7  *
   8  *      SPDX-License-Identifier: GPL-2.0-or-later
   9  */
  10
  11 #include <stdio.h>
  12 #include <string.h>
  13
  14 #include "lspci.h"
  15
  16 static int
  17 show_vendor_caps_virtio(struct device *d, int where, int cap)
  18 {
  19   int length = BITS(cap, 0, 8);
  20   int type = BITS(cap, 8, 8);
  21   char *tname;
  22
  23   if (length < 16)
  24     return 0;
  25   if (!config_fetch(d, where, length))
  26     return 0;
  27
  28   switch (type)
  29     {
  30     case 1:
  31       tname = "CommonCfg";
  32       break;
  33     case 2:
  34       tname = "Notify";
  35       break;
  36     case 3:
  37       tname = "ISR";
  38       break;
  39     case 4:
  40       tname = "DeviceCfg";
  41       break;
  42     default:
  43       tname = "<unknown>";
  44       break;
  45     }
  46
  47   printf("VirtIO: %s\n", tname);
  48
  49   if (verbose < 2)
  50     return 1;
  51
  52   printf("\t\tBAR=%d offset=%08x size=%08x",
  53          get_conf_byte(d, where +  4),
  54          get_conf_long(d, where +  8),
  55          get_conf_long(d, where + 12));
  56
  57   if (type == 2 && length >= 20)
  58     printf(" multiplier=%08x", get_conf_long(d, where+16));
  59
  60   printf("\n");
  61   return 1;
  62 }
  63
  64 static int
  65 do_show_vendor_caps(struct device *d, int where, int cap)
  66 {
  67   switch (d->dev->vendor_id)
  68     {
  69     case 0x1af4: /* Red Hat */
  70       if (d->dev->device_id >= 0x1000 &&
  71           d->dev->device_id <= 0x107f)
  72         return show_vendor_caps_virtio(d, where, cap);
  73       break;
  74     }
  75   return 0;
  76 }
  77
  78 void
  79 show_vendor_caps(struct device *d, int where, int cap)
  80 {
  81   printf("Vendor Specific Information: ");
  82   if (!do_show_vendor_caps(d, where, cap))
  83     printf("Len=%02x <?>\n", BITS(cap, 0, 8));
  84 }