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/*
* va_drm_utils.c - VA/DRM Utilities
*
* Copyright (c) 2012 Intel Corporation. All Rights Reserved.
*
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS 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 "sysdeps.h"
#include <xf86drm.h>
#include <sys/stat.h>
#include "va_drm_utils.h"
#include "va_drmcommon.h"
struct driver_name_map {
const char *key;
int key_len;
const char *name;
};
static const struct driver_name_map g_driver_name_map[] = {
{ "i915", 4, "iHD" }, // Intel Media driver
{ "i915", 4, "i965" }, // Intel OTC GenX driver
{ "pvrsrvkm", 8, "pvr" }, // Intel UMG PVR driver
{ "emgd", 4, "emgd" }, // Intel ECG PVR driver
{ "hybrid", 6, "hybrid" }, // Intel OTC Hybrid driver
{ "nouveau", 7, "nouveau" }, // Mesa Gallium driver
{ "radeon", 6, "r600" }, // Mesa Gallium driver
{ "amdgpu", 6, "radeonsi" }, // Mesa Gallium driver
{ NULL, 0, NULL }
};
/* Returns the VA driver candidate num for the active display*/
VAStatus
VA_DRM_GetNumCandidates(VADriverContextP ctx, int * num_candidates)
{
struct drm_state * const drm_state = ctx->drm_state;
drmVersionPtr drm_version;
int count = 0;
const struct driver_name_map *m = NULL;
if (!drm_state || drm_state->fd < 0)
return VA_STATUS_ERROR_INVALID_DISPLAY;
drm_version = drmGetVersion(drm_state->fd);
if (!drm_version)
return VA_STATUS_ERROR_UNKNOWN;
for (m = g_driver_name_map; m->key != NULL; m++) {
if (drm_version->name_len >= m->key_len &&
strncmp(drm_version->name, m->key, m->key_len) == 0) {
count ++;
}
}
drmFreeVersion(drm_version);
*num_candidates = count;
return count ? VA_STATUS_SUCCESS : VA_STATUS_ERROR_UNKNOWN;
}
/* Returns the VA driver name for the active display */
VAStatus
VA_DRM_GetDriverName(VADriverContextP ctx, char **driver_name_ptr, int candidate_index)
{
struct drm_state * const drm_state = ctx->drm_state;
drmVersionPtr drm_version;
char *driver_name = NULL;
const struct driver_name_map *m;
int current_index = 0;
*driver_name_ptr = NULL;
if (!drm_state || drm_state->fd < 0)
return VA_STATUS_ERROR_INVALID_DISPLAY;
drm_version = drmGetVersion(drm_state->fd);
if (!drm_version)
return VA_STATUS_ERROR_UNKNOWN;
for (m = g_driver_name_map; m->key != NULL; m++) {
if (drm_version->name_len >= m->key_len &&
strncmp(drm_version->name, m->key, m->key_len) == 0) {
if (current_index == candidate_index) {
break;
}
current_index ++;
}
}
drmFreeVersion(drm_version);
if (!m->name)
return VA_STATUS_ERROR_UNKNOWN;
driver_name = strdup(m->name);
if (!driver_name)
return VA_STATUS_ERROR_ALLOCATION_FAILED;
*driver_name_ptr = driver_name;
return VA_STATUS_SUCCESS;
}
/* Checks whether the file descriptor is a DRM Render-Nodes one */
int
VA_DRM_IsRenderNodeFd(int fd)
{
struct stat st;
const char *name;
/* Check by device node */
if (fstat(fd, &st) == 0)
return S_ISCHR(st.st_mode) && (st.st_rdev & 0x80);
/* Check by device name */
name = drmGetDeviceNameFromFd(fd);
if (name)
return strncmp(name, "/dev/dri/renderD", 16) == 0;
/* Unrecoverable error */
return -1;
}
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