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/*
* 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 <string.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <xf86drm.h>
static void
print_device_info(drmDevicePtr device, int i)
{
printf("device[%i]\n", i);
printf("\tavailable_nodes %04x\n", device->available_nodes);
printf("\tnodes\n");
for (int j = 0; j < DRM_NODE_MAX; j++)
if (device->available_nodes & 1 << j)
printf("\t\tnodes[%d] %s\n", j, device->nodes[j]);
printf("\tbustype %04x\n", device->bustype);
printf("\tbusinfo\n");
if (device->bustype == DRM_BUS_PCI) {
printf("\t\tpci\n");
printf("\t\t\tdomain\t%04x\n",device->businfo.pci->domain);
printf("\t\t\tbus\t%02x\n", device->businfo.pci->bus);
printf("\t\t\tdev\t%02x\n", device->businfo.pci->dev);
printf("\t\t\tfunc\t%1u\n", device->businfo.pci->func);
printf("\tdeviceinfo\n");
printf("\t\tpci\n");
printf("\t\t\tvendor_id\t%04x\n", device->deviceinfo.pci->vendor_id);
printf("\t\t\tdevice_id\t%04x\n", device->deviceinfo.pci->device_id);
printf("\t\t\tsubvendor_id\t%04x\n", device->deviceinfo.pci->subvendor_id);
printf("\t\t\tsubdevice_id\t%04x\n", device->deviceinfo.pci->subdevice_id);
printf("\t\t\trevision_id\t%02x\n", device->deviceinfo.pci->revision_id);
} else {
printf("Unknown/unhandled bustype\n");
}
printf("\n");
}
int
main(void)
{
drmDevicePtr *devices;
drmDevicePtr device;
int fd, ret, max_devices;
max_devices = drmGetDevices(NULL, 0);
if (max_devices <= 0) {
printf("drmGetDevices() has returned %d\n", max_devices);
return -1;
}
devices = calloc(max_devices, sizeof(drmDevicePtr));
if (devices == NULL) {
printf("Failed to allocate memory for the drmDevicePtr array\n");
return -1;
}
ret = drmGetDevices(devices, max_devices);
if (ret < 0) {
printf("drmGetDevices() returned an error %d\n", ret);
free(devices);
return -1;
}
for (int i = 0; i < ret; i++) {
print_device_info(devices[i], i);
for (int j = 0; j < DRM_NODE_MAX; j++) {
if (devices[i]->available_nodes & 1 << j) {
printf("Opening device %d node %s\n", i, 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;
}
if (drmGetDevice(fd, &device) == 0) {
print_device_info(device, i);
drmFreeDevice(&device);
}
close(fd);
}
}
}
drmFreeDevices(devices, ret);
free(devices);
return 0;
}
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