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r300g: implement pb_manager::is_buffer_busy

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This commit is contained in:
Marek Olšák 2011-02-13 09:39:52 +01:00
parent 49579a4df8
commit a87730ff3f
1 changed files with 27 additions and 22 deletions
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49
src/gallium/winsys/radeon/drm/radeon_drm_bo.c
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@ -156,38 +156,25 @@ static void *radeon_bo_map_internal(struct pb_buffer *_buf,
struct radeon_bo *bo = radeon_bo(_buf);
struct radeon_drm_cs *cs = flush_ctx;
struct drm_radeon_gem_mmap args = {};
/* prevents a call to radeon_bo_wait if (usage & DONTBLOCK) and
* radeon_is_busy returns FALSE. */
boolean may_be_busy = TRUE;
if (flags & PB_USAGE_DONTBLOCK) {
/* Note how we use radeon_bo_is_referenced_by_cs here. There are
* basically two places this map function can be called from:
* - pb_map
* - create_buffer (in the buffer reuse case)
*
* Since pb managers are per-winsys managers, not per-context managers,
* and we shouldn't reuse buffers if they are in-use in any context,
* we simply ask: is this buffer referenced by *any* CS?
*
* The problem with buffer_create is that it comes from pipe_screen,
* so we have no CS to look at, though luckily the following code
* is sufficient to tell whether the buffer is in use. */
if (_buf->base.usage & RADEON_PB_USAGE_CACHE) {
if (radeon_bo_is_referenced_by_any_cs(bo))
return NULL;
}
if (cs && radeon_bo_is_referenced_by_cs(cs, bo)) {
cs->flush_cs(cs->flush_data);
return NULL; /* It's very unlikely that the buffer is not busy. */
if (radeon_bo_is_referenced_by_cs(cs, bo)) {
return NULL;
}
if (radeon_bo_is_busy((struct r300_winsys_bo*)bo)) {
return NULL;
}
may_be_busy = FALSE;
}
/* If it's not unsynchronized bo_map, flush CS if needed and then wait. */
if (!(flags & PB_USAGE_UNSYNCHRONIZED)) {
if (cs && radeon_bo_is_referenced_by_cs(cs, bo)) {
if (may_be_busy && !(flags & PB_USAGE_UNSYNCHRONIZED)) {
if (radeon_bo_is_referenced_by_cs(cs, bo)) {
cs->flush_cs(cs->flush_data);
}
@ -306,6 +293,23 @@ static void radeon_bomgr_flush(struct pb_manager *mgr)
/* NOP */
}
/* This is for the cache bufmgr. */
static boolean radeon_bomgr_is_buffer_busy(struct pb_manager *_mgr,
struct pb_buffer *_buf)
{
struct radeon_bo *bo = radeon_bo(_buf);
if (radeon_bo_is_referenced_by_any_cs(bo)) {
return FALSE;
}
if (radeon_bo_is_busy((struct r300_winsys_bo*)bo)) {
return FALSE;
}
return TRUE;
}
static void radeon_bomgr_destroy(struct pb_manager *_mgr)
{
struct radeon_bomgr *mgr = radeon_bomgr(_mgr);
@ -337,6 +341,7 @@ struct pb_manager *radeon_bomgr_create(struct radeon_drm_winsys *rws)
mgr->base.destroy = radeon_bomgr_destroy;
mgr->base.create_buffer = radeon_bomgr_create_bo;
mgr->base.flush = radeon_bomgr_flush;
mgr->base.is_buffer_busy = radeon_bomgr_is_buffer_busy;
mgr->rws = rws;
mgr->bo_handles = util_hash_table_create(handle_hash, handle_compare);