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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 <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 not found any devices (errno=%d)\n",
-max_devices);
return 77;
}
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);
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;
}
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