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
print_device_info(drmDevicePtr device,int i,bool print_revision)36 print_device_info(drmDevicePtr device, int i, bool print_revision)
37 {
38 printf("device[%i]\n", i);
39 printf("\tavailable_nodes %04x\n", device->available_nodes);
40 printf("\tnodes\n");
41 for (int j = 0; j < DRM_NODE_MAX; j++)
42 if (device->available_nodes & 1 << j)
43 printf("\t\tnodes[%d] %s\n", j, device->nodes[j]);
44
45 printf("\tbustype %04x\n", device->bustype);
46 printf("\tbusinfo\n");
47 if (device->bustype == DRM_BUS_PCI) {
48 printf("\t\tpci\n");
49 printf("\t\t\tdomain\t%04x\n",device->businfo.pci->domain);
50 printf("\t\t\tbus\t%02x\n", device->businfo.pci->bus);
51 printf("\t\t\tdev\t%02x\n", device->businfo.pci->dev);
52 printf("\t\t\tfunc\t%1u\n", device->businfo.pci->func);
53
54 printf("\tdeviceinfo\n");
55 printf("\t\tpci\n");
56 printf("\t\t\tvendor_id\t%04x\n", device->deviceinfo.pci->vendor_id);
57 printf("\t\t\tdevice_id\t%04x\n", device->deviceinfo.pci->device_id);
58 printf("\t\t\tsubvendor_id\t%04x\n", device->deviceinfo.pci->subvendor_id);
59 printf("\t\t\tsubdevice_id\t%04x\n", device->deviceinfo.pci->subdevice_id);
60 if (print_revision)
61 printf("\t\t\trevision_id\t%02x\n", device->deviceinfo.pci->revision_id);
62 else
63 printf("\t\t\trevision_id\tIGNORED\n");
64
65 } else if (device->bustype == DRM_BUS_USB) {
66 printf("\t\tusb\n");
67 printf("\t\t\tbus\t%03u\n", device->businfo.usb->bus);
68 printf("\t\t\tdev\t%03u\n", device->businfo.usb->dev);
69
70 printf("\tdeviceinfo\n");
71 printf("\t\tusb\n");
72 printf("\t\t\tvendor\t%04x\n", device->deviceinfo.usb->vendor);
73 printf("\t\t\tproduct\t%04x\n", device->deviceinfo.usb->product);
74 } else if (device->bustype == DRM_BUS_PLATFORM) {
75 char **compatible = device->deviceinfo.platform->compatible;
76
77 printf("\t\tplatform\n");
78 printf("\t\t\tfullname\t%s\n", device->businfo.platform->fullname);
79
80 printf("\tdeviceinfo\n");
81 printf("\t\tplatform\n");
82 printf("\t\t\tcompatible\n");
83
84 while (*compatible) {
85 printf("\t\t\t\t%s\n", *compatible);
86 compatible++;
87 }
88 } else if (device->bustype == DRM_BUS_HOST1X) {
89 char **compatible = device->deviceinfo.platform->compatible;
90
91 printf("\t\thost1x\n");
92 printf("\t\t\tfullname\t%s\n", device->businfo.host1x->fullname);
93
94 printf("\tdeviceinfo\n");
95 printf("\t\tplatform\n");
96 printf("\t\t\tcompatible\n");
97
98 while (*compatible) {
99 printf("\t\t\t\t%s\n", *compatible);
100 compatible++;
101 }
102 } else {
103 printf("Unknown/unhandled bustype\n");
104 }
105 printf("\n");
106 }
107
108 int
main(void)109 main(void)
110 {
111 drmDevicePtr *devices;
112 drmDevicePtr device;
113 int fd, ret, max_devices;
114
115 max_devices = drmGetDevices2(0, NULL, 0);
116
117 if (max_devices <= 0) {
118 printf("drmGetDevices2() has returned %d\n", max_devices);
119 return -1;
120 }
121
122 devices = calloc(max_devices, sizeof(drmDevicePtr));
123 if (devices == NULL) {
124 printf("Failed to allocate memory for the drmDevicePtr array\n");
125 return -1;
126 }
127
128 ret = drmGetDevices2(0, devices, max_devices);
129 if (ret < 0) {
130 printf("drmGetDevices2() returned an error %d\n", ret);
131 free(devices);
132 return -1;
133 }
134
135 for (int i = 0; i < ret; i++) {
136 print_device_info(devices[i], i, false);
137
138 for (int j = 0; j < DRM_NODE_MAX; j++) {
139 if (devices[i]->available_nodes & 1 << j) {
140 printf("Opening device %d node %s\n", i, devices[i]->nodes[j]);
141 fd = open(devices[i]->nodes[j], O_RDONLY | O_CLOEXEC, 0);
142 if (fd < 0) {
143 printf("Failed - %s (%d)\n", strerror(errno), errno);
144 continue;
145 }
146
147 if (drmGetDevice2(fd, DRM_DEVICE_GET_PCI_REVISION, &device) == 0) {
148 print_device_info(device, i, true);
149 drmFreeDevice(&device);
150 }
151 close(fd);
152 }
153 }
154 }
155
156 drmFreeDevices(devices, ret);
157 free(devices);
158 return 0;
159 }
160