static void
intel_batchbuffer_reset(struct brw_context *brw)
{
if (brw->batch.last_bo != NULL) {
drm_intel_bo_unreference(brw->batch.last_bo);
brw->batch.last_bo = NULL;
}
brw->batch.last_bo = brw->batch.bo;
brw_render_cache_set_clear(brw);
brw->batch.bo = drm_intel_bo_alloc(brw->bufmgr, "batchbuffer",
BATCH_SZ, 4096);
if (brw->has_llc) {
drm_intel_bo_map(brw->batch.bo, true);
brw->batch.map = brw->batch.bo->virtual;
}
/* Emit a pipelined flush to either flush render and texture cache for
* reading from a FBO-drawn texture, or flush so that frontbuffer
* render appears on the screen in DRI1.
*
* This is also used for the always_flush_cache driconf debug option.
*/
void
brw_emit_mi_flush(struct brw_context *brw)
{
if (brw->batch.ring == BLT_RING && brw->gen >= 6) {
BEGIN_BATCH_BLT(4);
OUT_BATCH(MI_FLUSH_DW);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
ADVANCE_BATCH();
} else {
int flags = PIPE_CONTROL_NO_WRITE | PIPE_CONTROL_RENDER_TARGET_FLUSH;
if (brw->gen >= 6) {
if (brw->gen == 9) {
/* Hardware workaround: SKL
*
* Emit Pipe Control with all bits set to zero before emitting
* a Pipe Control with VF Cache Invalidate set.
*/
brw_emit_pipe_control_flush(brw, 0);
}
flags |= PIPE_CONTROL_INSTRUCTION_INVALIDATE |
PIPE_CONTROL_DEPTH_CACHE_FLUSH |
PIPE_CONTROL_VF_CACHE_INVALIDATE |
PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE |
PIPE_CONTROL_CS_STALL;
if (brw->gen == 6) {
/* Hardware workaround: SNB B-Spec says:
*
* [Dev-SNB{W/A}]: Before a PIPE_CONTROL with Write Cache
* Flush Enable =1, a PIPE_CONTROL with any non-zero
* post-sync-op is required.
*/
brw_emit_post_sync_nonzero_flush(brw);
}
}
brw_emit_pipe_control_flush(brw, flags);
}
brw_render_cache_set_clear(brw);
}
