118 lines
3.9 KiB
C
118 lines
3.9 KiB
C
/*
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* Copyright (c) 2015 Emil Velikov <emil.l.velikov@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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*/
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <xf86drm.h>
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static void
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print_device_info(drmDevicePtr device, int i)
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{
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printf("device[%i]\n", i);
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printf("\tavailable_nodes %04x\n", device->available_nodes);
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printf("\tnodes\n");
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for (int j = 0; j < DRM_NODE_MAX; j++)
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if (device->available_nodes & 1 << j)
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printf("\t\tnodes[%d] %s\n", j, device->nodes[j]);
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printf("\tbustype %04x\n", device->bustype);
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printf("\tbusinfo\n");
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if (device->bustype == DRM_BUS_PCI) {
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printf("\t\tpci\n");
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printf("\t\t\tdomain\t%04x\n",device->businfo.pci->domain);
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printf("\t\t\tbus\t%02x\n", device->businfo.pci->bus);
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printf("\t\t\tdev\t%02x\n", device->businfo.pci->dev);
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printf("\t\t\tfunc\t%1u\n", device->businfo.pci->func);
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printf("\tdeviceinfo\n");
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printf("\t\tpci\n");
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printf("\t\t\tvendor_id\t%04x\n", device->deviceinfo.pci->vendor_id);
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printf("\t\t\tdevice_id\t%04x\n", device->deviceinfo.pci->device_id);
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printf("\t\t\tsubvendor_id\t%04x\n", device->deviceinfo.pci->subvendor_id);
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printf("\t\t\tsubdevice_id\t%04x\n", device->deviceinfo.pci->subdevice_id);
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printf("\t\t\trevision_id\t%02x\n", device->deviceinfo.pci->revision_id);
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} else {
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printf("Unknown/unhandled bustype\n");
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}
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printf("\n");
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}
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int
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main(void)
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{
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drmDevicePtr *devices;
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drmDevicePtr device;
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int fd, ret, max_devices;
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max_devices = drmGetDevices(NULL, 0);
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if (max_devices <= 0) {
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printf("drmGetDevices() has returned %d\n", max_devices);
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return -1;
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}
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devices = calloc(max_devices, sizeof(drmDevicePtr));
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if (devices == NULL) {
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printf("Failed to allocate memory for the drmDevicePtr array\n");
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return -1;
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}
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ret = drmGetDevices(devices, max_devices);
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if (ret < 0) {
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printf("drmGetDevices() returned an error %d\n", ret);
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free(devices);
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return -1;
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}
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for (int i = 0; i < ret; i++) {
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print_device_info(devices[i], i);
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for (int j = 0; j < DRM_NODE_MAX; j++) {
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if (devices[i]->available_nodes & 1 << j) {
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printf("Opening device %d node %s\n", i, devices[i]->nodes[j]);
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fd = open(devices[i]->nodes[j], O_RDONLY | O_CLOEXEC, 0);
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if (fd < 0) {
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printf("Failed - %s (%d)\n", strerror(errno), errno);
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continue;
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}
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if (drmGetDevice(fd, &device) == 0) {
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print_device_info(device, i);
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drmFreeDevice(&device);
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}
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close(fd);
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}
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}
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}
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drmFreeDevices(devices, ret);
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free(devices);
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return 0;
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}
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