diff options
| -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 b5942994d9..76b98bed67 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 dcd6a5eb0a..5f72800676 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 |