tests/drmdevice.c

   1 /*
   2  * Copyright (c) 2015 Emil Velikov <emil.l.velikov@gmail.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  20  * IN THE SOFTWARE.
  21  *
  22  */
  23
  24 #include <errno.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <stdbool.h>
  28 #include <string.h>
  29 #include <sys/stat.h>
  30 #include <fcntl.h>
  31 #include <unistd.h>
  32 #include <xf86drm.h>
  33
  34
  35 static void
  36 print_device_info(drmDevicePtr device, int i, bool print_revision)
  37 {
  38     printf("device[%i]\n", i);
  39     printf("+-> available_nodes %#04x\n", device->available_nodes);
  40     printf("+-> nodes\n");
  41     for (int j = 0; j < DRM_NODE_MAX; j++)
  42         if (device->available_nodes & 1 << j)
  43             printf("|   +-> nodes[%d] %s\n", j, device->nodes[j]);
  44
  45     printf("+-> bustype %04x\n", device->bustype);
  46     if (device->bustype == DRM_BUS_PCI) {
  47         printf("|   +-> pci\n");
  48         printf("|       +-> domain %04x\n",device->businfo.pci->domain);
  49         printf("|       +-> bus    %02x\n", device->businfo.pci->bus);
  50         printf("|       +-> dev    %02x\n", device->businfo.pci->dev);
  51         printf("|       +-> func   %1u\n", device->businfo.pci->func);
  52
  53         printf("+-> deviceinfo\n");
  54         printf("    +-> pci\n");
  55         printf("        +-> vendor_id     %04x\n", device->deviceinfo.pci->vendor_id);
  56         printf("        +-> device_id     %04x\n", device->deviceinfo.pci->device_id);
  57         printf("        +-> subvendor_id  %04x\n", device->deviceinfo.pci->subvendor_id);
  58         printf("        +-> subdevice_id  %04x\n", device->deviceinfo.pci->subdevice_id);
  59         if (print_revision)
  60             printf("        +-> revision_id   %02x\n", device->deviceinfo.pci->revision_id);
  61         else
  62             printf("        +-> revision_id   IGNORED\n");
  63
  64     } else if (device->bustype == DRM_BUS_USB) {
  65         printf("|   +-> usb\n");
  66         printf("|       +-> bus %03u\n", device->businfo.usb->bus);
  67         printf("|       +-> dev %03u\n", device->businfo.usb->dev);
  68
  69         printf("+-> deviceinfo\n");
  70         printf("    +-> usb\n");
  71         printf("        +-> vendor  %04x\n", device->deviceinfo.usb->vendor);
  72         printf("        +-> product %04x\n", device->deviceinfo.usb->product);
  73     } else if (device->bustype == DRM_BUS_PLATFORM) {
  74         char **compatible = device->deviceinfo.platform->compatible;
  75
  76         printf("|   +-> platform\n");
  77         printf("|       +-> fullname\t%s\n", device->businfo.platform->fullname);
  78
  79         printf("+-> deviceinfo\n");
  80         printf("    +-> platform\n");
  81         printf("        +-> compatible\n");
  82
  83         while (*compatible) {
  84             printf("                    %s\n", *compatible);
  85             compatible++;
  86         }
  87     } else if (device->bustype == DRM_BUS_HOST1X) {
  88         char **compatible = device->deviceinfo.host1x->compatible;
  89
  90         printf("|   +-> host1x\n");
  91         printf("|       +-> fullname\t%s\n", device->businfo.host1x->fullname);
  92
  93         printf("+-> deviceinfo\n");
  94         printf("    +-> host1x\n");
  95         printf("        +-> compatible\n");
  96
  97         while (*compatible) {
  98             printf("                    %s\n", *compatible);
  99             compatible++;
 100         }
 101     } else {
 102         printf("Unknown/unhandled bustype\n");
 103     }
 104     printf("\n");
 105 }
 106
 107 int
 108 main(void)
 109 {
 110     drmDevicePtr *devices;
 111     drmDevicePtr device;
 112     int fd, ret, max_devices;
 113
 114     printf("--- Checking the number of DRM device available ---\n");
 115     max_devices = drmGetDevices2(0, NULL, 0);
 116
 117     if (max_devices <= 0) {
 118         printf("drmGetDevices2() has not found any devices (errno=%d)\n",
 119                -max_devices);
 120         return 77;
 121     }
 122     printf("--- Devices reported %d ---\n", max_devices);
 123
 124
 125     devices = calloc(max_devices, sizeof(drmDevicePtr));
 126     if (devices == NULL) {
 127         printf("Failed to allocate memory for the drmDevicePtr array\n");
 128         return -1;
 129     }
 130
 131     printf("--- Retrieving devices information (PCI device revision is ignored) ---\n");
 132     ret = drmGetDevices2(0, devices, max_devices);
 133     if (ret < 0) {
 134         printf("drmGetDevices2() returned an error %d\n", ret);
 135         free(devices);
 136         return -1;
 137     }
 138
 139     for (int i = 0; i < ret; i++) {
 140         print_device_info(devices[i], i, false);
 141
 142         for (int j = 0; j < DRM_NODE_MAX; j++) {
 143             if (devices[i]->available_nodes & 1 << j) {
 144                 printf("--- Opening device node %s ---\n", devices[i]->nodes[j]);
 145                 fd = open(devices[i]->nodes[j], O_RDONLY | O_CLOEXEC, 0);
 146                 if (fd < 0) {
 147                     printf("Failed - %s (%d)\n", strerror(errno), errno);
 148                     continue;
 149                 }
 150
 151                 printf("--- Retrieving device info, for node %s ---\n", devices[i]->nodes[j]);
 152                 if (drmGetDevice2(fd, DRM_DEVICE_GET_PCI_REVISION, &device) == 0) {
 153                     print_device_info(device, i, true);
 154                     drmFreeDevice(&device);
 155                 }
 156                 close(fd);
 157             }
 158         }
 159     }
 160
 161     drmFreeDevices(devices, ret);
 162     free(devices);
 163     return 0;
 164 }