diff options
| author | Younes Manton <younes.m@gmail.com> | 2008-12-11 17:55:16 -0500 |
|---|---|---|
| committer | Younes Manton <younes.m@gmail.com> | 2009-01-10 13:52:05 -0500 |
| commit | af2a856caa84755d3b1a0a887d000ce7dc3221dd (patch) | |
| tree | c2db8ba4af306ca92b6c7cb25a6a61b841f60972 | |
| parent | 7289c388f442fe532de52058f9167bc331920b1a (diff) | |
nouveau: Add busy() query, determines if BOs can be mapped immediately.
| -rw-r--r-- | src/gallium/winsys/drm/nouveau/nouveau_bo.c | 34 | ||||
| -rw-r--r-- | src/gallium/winsys/drm/nouveau/nouveau_drmif.h | 3 |
2 files changed, 37 insertions, 0 deletions
diff --git a/src/gallium/winsys/drm/nouveau/nouveau_bo.c b/src/gallium/winsys/drm/nouveau/nouveau_bo.c index b5942994d94..76b98bed675 100644 --- a/src/gallium/winsys/drm/nouveau/nouveau_bo.c +++ b/src/gallium/winsys/drm/nouveau/nouveau_bo.c @@ -273,6 +273,40 @@ nouveau_bo_del(struct nouveau_bo **bo) } int +nouveau_bo_busy(struct nouveau_bo *bo, uint32_t flags) +{ + struct nouveau_bo_priv *nvbo = nouveau_bo(bo); + struct nouveau_fence *fence; + + if (!nvbo) + return -EINVAL; + + /* If the buffer is pending it must be busy, unless + * both are RD, in which case we can allow access */ + if (nvbo->pending) { + if ((nvbo->pending->flags & NOUVEAU_BO_RDWR) == NOUVEAU_BO_RD && + (flags & NOUVEAU_BO_RDWR) == NOUVEAU_BO_RD) + return 0; + else + return 1; + } + + if (flags & NOUVEAU_BO_WR) + fence = nvbo->fence; + else + fence = nvbo->wr_fence; + + /* If the buffer is not pending and doesn't have a fence + * that conflicts with our flags then it can't be busy + */ + if (!fence) + return 0; + else + /* If the fence is signalled the buffer is not busy, else is busy */ + return !nouveau_fence(fence)->signalled; +} + +int nouveau_bo_map(struct nouveau_bo *bo, uint32_t flags) { struct nouveau_bo_priv *nvbo = nouveau_bo(bo); diff --git a/src/gallium/winsys/drm/nouveau/nouveau_drmif.h b/src/gallium/winsys/drm/nouveau/nouveau_drmif.h index dcd6a5eb0a4..5f72800676d 100644 --- a/src/gallium/winsys/drm/nouveau/nouveau_drmif.h +++ b/src/gallium/winsys/drm/nouveau/nouveau_drmif.h @@ -287,6 +287,9 @@ extern void nouveau_bo_del(struct nouveau_bo **); extern int +nouveau_bo_busy(struct nouveau_bo *bo, uint32_t flags); + +extern int nouveau_bo_map(struct nouveau_bo *, uint32_t flags); extern void |