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/*
* Copyright © 2009 Intel Corporation
*
* 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 PRECISION INSIGHT 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.
*
* Authors:
* Xiang Haihao <haihao.xiang@intel.com>
* Zou Nan hai <nanhai.zou@intel.com>
*
*/
#include <assert.h>
#include "va_dricommon.h"
#include "intel_batchbuffer.h"
#include "intel_memman.h"
#include "intel_driver.h"
static Bool
intel_driver_get_param(struct intel_driver_data *intel, int param, int *value)
{
struct drm_i915_getparam gp;
gp.param = param;
gp.value = value;
return drmCommandWriteRead(intel->fd, DRM_I915_GETPARAM, &gp, sizeof(gp)) == 0;
}
Bool
intel_driver_init(VADriverContextP ctx)
{
struct intel_driver_data *intel = intel_driver_data(ctx);
struct dri_state *dri_state = (struct dri_state *)ctx->dri_state;
int has_exec2, has_bsd, has_blt;
assert(dri_state);
assert(dri_state->driConnectedFlag == VA_DRI2 ||
dri_state->driConnectedFlag == VA_DRI1);
intel->fd = dri_state->fd;
intel->dri2Enabled = (dri_state->driConnectedFlag == VA_DRI2);
if (!intel->dri2Enabled) {
drm_sarea_t *pSAREA;
pSAREA = (drm_sarea_t *)dri_state->pSAREA;
intel->hHWContext = dri_state->hwContext;
intel->driHwLock = (drmLock *)(&pSAREA->lock);
intel->pPrivSarea = (void *)pSAREA + sizeof(drm_sarea_t);
}
intel->locked = 0;
pthread_mutex_init(&intel->ctxmutex, NULL);
intel_driver_get_param(intel, I915_PARAM_CHIPSET_ID, &intel->device_id);
if (intel_driver_get_param(intel, I915_PARAM_HAS_EXECBUF2, &has_exec2))
intel->has_exec2 = has_exec2;
if (intel_driver_get_param(intel, I915_PARAM_HAS_BSD, &has_bsd))
intel->has_bsd = has_bsd;
if (intel_driver_get_param(intel, I915_PARAM_HAS_BLT, &has_blt))
intel->has_blt = has_blt;
intel_memman_init(intel);
return True;
}
Bool
intel_driver_terminate(VADriverContextP ctx)
{
struct intel_driver_data *intel = intel_driver_data(ctx);
intel_memman_terminate(intel);
pthread_mutex_destroy(&intel->ctxmutex);
return True;
}
void
intel_lock_hardware(VADriverContextP ctx)
{
struct intel_driver_data *intel = intel_driver_data(ctx);
char __ret = 0;
PPTHREAD_MUTEX_LOCK();
assert(!intel->locked);
if (!intel->dri2Enabled) {
DRM_CAS(intel->driHwLock,
intel->hHWContext,
(DRM_LOCK_HELD|intel->hHWContext),
__ret);
if (__ret) {
drmGetLock(intel->fd, intel->hHWContext, 0);
}
}
intel->locked = 1;
}
void
intel_unlock_hardware(VADriverContextP ctx)
{
struct intel_driver_data *intel = intel_driver_data(ctx);
if (!intel->dri2Enabled) {
DRM_UNLOCK(intel->fd,
intel->driHwLock,
intel->hHWContext);
}
intel->locked = 0;
PPTHREAD_MUTEX_UNLOCK();
}
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