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("+-> 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
main(void)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 }
165