1 /* 2 * Copyright (c) 2015 Emil Velikov <emil.l.velikov (at) 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 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 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
