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
35static void
36print_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
108int
109main(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