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 <stdio.h>
25 #include <stdlib.h>
26 #include <sys/stat.h>
27 #include <fcntl.h>
28 #include <unistd.h>
29 #include <xf86drm.h>
30
31
32 static void
print_device_info(drmDevicePtr device,int i)33 print_device_info(drmDevicePtr device, int i)
34 {
35 printf("device[%i]\n", i);
36 printf("\tavailable_nodes %04x\n", device->available_nodes);
37 printf("\tnodes\n");
38 for (int j = 0; j < DRM_NODE_MAX; j++)
39 if (device->available_nodes & 1 << j)
40 printf("\t\tnodes[%d] %s\n", j, device->nodes[j]);
41
42 printf("\tbustype %04x\n", device->bustype);
43 printf("\tbusinfo\n");
44 if (device->bustype == DRM_BUS_PCI) {
45 printf("\t\tpci\n");
46 printf("\t\t\tdomain\t%04x\n",device->businfo.pci->domain);
47 printf("\t\t\tbu\t%02x\n", device->businfo.pci->bus);
48 printf("\t\t\tde\t%02x\n", device->businfo.pci->dev);
49 printf("\t\t\tfunc\t%1u\n", device->businfo.pci->func);
50
51 printf("\tdeviceinfo\n");
52 printf("\t\tpci\n");
53 printf("\t\t\tvendor_id\t%04x\n", device->deviceinfo.pci->vendor_id);
54 printf("\t\t\tdevice_id\t%04x\n", device->deviceinfo.pci->device_id);
55 printf("\t\t\tsubvendor_id\t%04x\n", device->deviceinfo.pci->subvendor_id);
56 printf("\t\t\tsubdevice_id\t%04x\n", device->deviceinfo.pci->subdevice_id);
57 printf("\t\t\trevision_id\t%02x\n", device->deviceinfo.pci->revision_id);
58 } else {
59 printf("Unknown/unhandled bustype\n");
60 }
61 printf("\n");
62 }
63
64 int
main(void)65 main(void)
66 {
67 drmDevicePtr *devices;
68 drmDevicePtr device;
69 int fd, ret, max_devices;
70
71 max_devices = drmGetDevices(NULL, 0);
72
73 if (max_devices <= 0) {
74 printf("drmGetDevices() has returned %d\n", max_devices);
75 return -1;
76 }
77
78 devices = calloc(max_devices, sizeof(drmDevicePtr));
79 if (devices == NULL) {
80 printf("Failed to allocate memory for the drmDevicePtr array\n");
81 return -1;
82 }
83
84 ret = drmGetDevices(devices, max_devices);
85 if (ret < 0) {
86 printf("drmGetDevices() returned an error %d\n", ret);
87 free(devices);
88 return -1;
89 }
90
91 for (int i = 0; i < ret; i++) {
92 print_device_info(devices[i], i);
93
94 for (int j = 0; j < DRM_NODE_MAX; j++) {
95 if (devices[i]->available_nodes & 1 << j) {
96 fd = open(devices[i]->nodes[j], O_RDONLY | O_CLOEXEC, 0);
97 if (fd < 0)
98 continue;
99
100 if (drmGetDevice(fd, &device) == 0) {
101 print_device_info(device, -1);
102 drmFreeDevice(&device);
103 }
104 close(fd);
105 }
106 }
107 }
108
109 drmFreeDevices(devices, ret);
110 free(devices);
111 return 0;
112 }
113