diff options
| author | Christopher James Halse Rogers <christopher.halse.rogers@canonical.com> | 2017-04-03 05:35:23 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-04-07 18:20:41 +0200 |
| commit | ede2e019adec0b6fd21a54ace92358969f1a1629 (patch) | |
| tree | 6af5eeb8a3093ac93c41eac3f99e373eed969f29 | |
| parent | drm/radeon: Maintain prime import/export refcount for BOs (diff) | |
| download | linux-ede2e019adec0b6fd21a54ace92358969f1a1629.tar.xz linux-ede2e019adec0b6fd21a54ace92358969f1a1629.zip | |
drm/radeon: Refuse to migrate a prime BO to VRAM. (v2)
BOs shared via dma-buf, either imported or exported, cannot sensibly be migrated to VRAM
without breaking the dma-buf sharing. Refuse userspace requests to migrate to VRAM,
ensure such BOs are not migrated during command submission, and refuse to pin them
to VRAM.
v2: Don't pin BOs in GTT. Instead, refuse to migrate BOs to VRAM.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christopher James Halse Rogers <christopher.halse.rogers@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_cs.c | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_gem.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_object.c | 5 |
3 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c index a8442f7196d6..df6b58c08544 100644 --- a/drivers/gpu/drm/radeon/radeon_cs.c +++ b/drivers/gpu/drm/radeon/radeon_cs.c @@ -164,6 +164,16 @@ static int radeon_cs_parser_relocs(struct radeon_cs_parser *p) p->relocs[i].allowed_domains = domain; } + /* Objects shared as dma-bufs cannot be moved to VRAM */ + if (p->relocs[i].robj->prime_shared_count) { + p->relocs[i].allowed_domains &= ~RADEON_GEM_DOMAIN_VRAM; + if (!p->relocs[i].allowed_domains) { + DRM_ERROR("BO associated with dma-buf cannot " + "be moved to VRAM\n"); + return -EINVAL; + } + } + p->relocs[i].tv.bo = &p->relocs[i].robj->tbo; p->relocs[i].tv.shared = !r->write_domain; diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c index 9b0b123ce079..dddb372de2b9 100644 --- a/drivers/gpu/drm/radeon/radeon_gem.c +++ b/drivers/gpu/drm/radeon/radeon_gem.c @@ -120,6 +120,10 @@ static int radeon_gem_set_domain(struct drm_gem_object *gobj, return r; } } + if (domain == RADEON_GEM_DOMAIN_VRAM && robj->prime_shared_count) { + /* A BO that is associated with a dma-buf cannot be sensibly migrated to VRAM */ + return -EINVAL; + } return 0; } diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c index 74b276060c20..bec2ec056de4 100644 --- a/drivers/gpu/drm/radeon/radeon_object.c +++ b/drivers/gpu/drm/radeon/radeon_object.c @@ -352,6 +352,11 @@ int radeon_bo_pin_restricted(struct radeon_bo *bo, u32 domain, u64 max_offset, return 0; } + if (bo->prime_shared_count && domain == RADEON_GEM_DOMAIN_VRAM) { + /* A BO shared as a dma-buf cannot be sensibly migrated to VRAM */ + return -EINVAL; + } + radeon_ttm_placement_from_domain(bo, domain); for (i = 0; i < bo->placement.num_placement; i++) { /* force to pin into visible video ram */ |