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, 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;
}
/* Print AMD devices information */
static void amdgpu_print_devices()
{
int i;
drmDevicePtr device;
/* Open the first AMD devcie to print driver information. */
if (drm_amdgpu[0] >=0) {
/* Display AMD driver version information.*/
drmVersionPtr retval = drmGetVersion(drm_amdgpu[0]);
if (retval == NULL) {
perror("Cannot get version for AMDGPU device");
return;
}
printf("Driver name: %s, Date: %s, Description: %s.\n",
retval->name, retval->date, retval->desc);
drmFreeVersion(retval);
}
/* Display information of AMD devices */
printf("Devices:\n");
for (i = 0; i < MAX_CARDS_SUPPORTED && drm_amdgpu[i] >=0; i++)
if (drmGetDevice2(drm_amdgpu[i],
DRM_DEVICE_GET_PCI_REVISION,
&device) == 0) {
if (device->bustype == DRM_BUS_PCI) {
printf("PCI ");
printf(" domain:%04x",
device->businfo.pci->domain);
printf(" bus:%02x",
device->businfo.pci->bus);
printf(" device:%02x",
device->businfo.pci->dev);
printf(" function:%01x",
device->businfo.pci->func);
printf(" vendor_id:%04x",
device->deviceinfo.pci->vendor_id);
printf(" device_id:%04x",
device->deviceinfo.pci->device_id);
printf(" subvendor_id:%04x",
device->deviceinfo.pci->subvendor_id);
printf(" subdevice_id:%04x",
device->deviceinfo.pci->subdevice_id);
printf(" revision_id:%02x",
device->deviceinfo.pci->revision_id);
printf("\n");
}
drmFreeDevice(&device);
}
}
/* Find a match AMD device in PCI bus
* Return the index of the device or -1 if not found
*/
static int amdgpu_find_device(uint8_t bus, uint16_t dev)
{
int i;
drmDevicePtr device;
for (i = 0; i < MAX_CARDS_SUPPORTED && drm_amdgpu[i] >= 0; i++) {
if (drmGetDevice2(drm_amdgpu[i],
DRM_DEVICE_GET_PCI_REVISION,
&device) == 0) {
if (device->bustype == DRM_BUS_PCI)
if ((bus == 0xFF || device->businfo.pci->bus == bus) &&
device->deviceinfo.pci->device_id == dev) {
drmFreeDevice(&device);
return i;
}
drmFreeDevice(&device);
}
}
return -1;
}
