| /* |
| * Copyright (c) 2015 Emil Velikov <emil.l.velikov@gmail.com> |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| * |
| */ |
| |
| #include <errno.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <stdbool.h> |
| #include <string.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <xf86drm.h> |
| |
| |
| static void |
| print_device_info(drmDevicePtr device, int i, bool print_revision) |
| { |
| printf("device[%i]\n", i); |
| printf("+-> available_nodes %#04x\n", device->available_nodes); |
| printf("+-> nodes\n"); |
| for (int j = 0; j < DRM_NODE_MAX; j++) |
| if (device->available_nodes & 1 << j) |
| printf("| +-> nodes[%d] %s\n", j, device->nodes[j]); |
| |
| printf("+-> bustype %04x\n", device->bustype); |
| if (device->bustype == DRM_BUS_PCI) { |
| printf("| +-> pci\n"); |
| printf("| +-> domain %04x\n",device->businfo.pci->domain); |
| printf("| +-> bus %02x\n", device->businfo.pci->bus); |
| printf("| +-> dev %02x\n", device->businfo.pci->dev); |
| printf("| +-> func %1u\n", device->businfo.pci->func); |
| |
| printf("+-> deviceinfo\n"); |
| printf(" +-> pci\n"); |
| printf(" +-> vendor_id %04x\n", device->deviceinfo.pci->vendor_id); |
| printf(" +-> device_id %04x\n", device->deviceinfo.pci->device_id); |
| printf(" +-> subvendor_id %04x\n", device->deviceinfo.pci->subvendor_id); |
| printf(" +-> subdevice_id %04x\n", device->deviceinfo.pci->subdevice_id); |
| if (print_revision) |
| printf(" +-> revision_id %02x\n", device->deviceinfo.pci->revision_id); |
| else |
| printf(" +-> revision_id IGNORED\n"); |
| |
| } else if (device->bustype == DRM_BUS_USB) { |
| printf("| +-> usb\n"); |
| printf("| +-> bus %03u\n", device->businfo.usb->bus); |
| printf("| +-> dev %03u\n", device->businfo.usb->dev); |
| |
| printf("+-> deviceinfo\n"); |
| printf(" +-> usb\n"); |
| printf(" +-> vendor %04x\n", device->deviceinfo.usb->vendor); |
| printf(" +-> product %04x\n", device->deviceinfo.usb->product); |
| } else if (device->bustype == DRM_BUS_PLATFORM) { |
| char **compatible = device->deviceinfo.platform->compatible; |
| |
| printf("| +-> platform\n"); |
| printf("| +-> fullname\t%s\n", device->businfo.platform->fullname); |
| |
| printf("+-> deviceinfo\n"); |
| printf(" +-> platform\n"); |
| printf(" +-> compatible\n"); |
| |
| while (*compatible) { |
| printf(" %s\n", *compatible); |
| compatible++; |
| } |
| } else if (device->bustype == DRM_BUS_HOST1X) { |
| char **compatible = device->deviceinfo.host1x->compatible; |
| |
| printf("| +-> host1x\n"); |
| printf("| +-> fullname\t%s\n", device->businfo.host1x->fullname); |
| |
| printf("+-> deviceinfo\n"); |
| printf(" +-> host1x\n"); |
| printf(" +-> compatible\n"); |
| |
| while (*compatible) { |
| printf(" %s\n", *compatible); |
| compatible++; |
| } |
| } else { |
| printf("Unknown/unhandled bustype\n"); |
| } |
| printf("\n"); |
| } |
| |
| int |
| main(void) |
| { |
| drmDevicePtr *devices; |
| drmDevicePtr device; |
| int fd, ret, max_devices; |
| |
| printf("--- Checking the number of DRM device available ---\n"); |
| max_devices = drmGetDevices2(0, NULL, 0); |
| |
| if (max_devices <= 0) { |
| printf("drmGetDevices2() has returned %d\n", max_devices); |
| return -1; |
| } |
| printf("--- Devices reported %d ---\n", max_devices); |
| |
| |
| devices = calloc(max_devices, sizeof(drmDevicePtr)); |
| if (devices == NULL) { |
| printf("Failed to allocate memory for the drmDevicePtr array\n"); |
| return -1; |
| } |
| |
| printf("--- Retrieving devices information (PCI device revision is ignored) ---\n"); |
| ret = drmGetDevices2(0, devices, max_devices); |
| if (ret < 0) { |
| printf("drmGetDevices2() returned an error %d\n", ret); |
| free(devices); |
| return -1; |
| } |
| |
| for (int i = 0; i < ret; i++) { |
| print_device_info(devices[i], i, false); |
| |
| for (int j = 0; j < DRM_NODE_MAX; j++) { |
| if (devices[i]->available_nodes & 1 << j) { |
| printf("--- Opening device node %s ---\n", devices[i]->nodes[j]); |
| fd = open(devices[i]->nodes[j], O_RDONLY | O_CLOEXEC, 0); |
| if (fd < 0) { |
| printf("Failed - %s (%d)\n", strerror(errno), errno); |
| continue; |
| } |
| |
| printf("--- Retrieving device info, for node %s ---\n", devices[i]->nodes[j]); |
| if (drmGetDevice2(fd, DRM_DEVICE_GET_PCI_REVISION, &device) == 0) { |
| print_device_info(device, i, true); |
| drmFreeDevice(&device); |
| } |
| close(fd); |
| } |
| } |
| } |
| |
| drmFreeDevices(devices, ret); |
| free(devices); |
| return 0; |
| } |