Now that fallback to gtt is fixed for cpu access, we can remove this limit.
bug: https://bugs.freedesktop.org/show_bug.cgi?id=78717 v2: use new gart_pin_size to accurately track available gtt. v3: fix comment Signed-off-by: Alex Deucher <alexander.deucher at amd.com> Reviewed-by: Christian K?nig <christian.koenig at amd.com> --- drivers/gpu/drm/radeon/radeon.h | 2 +- drivers/gpu/drm/radeon/radeon_gem.c | 14 +++++++++----- 2 files changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index d26c61c..e66f831 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -546,7 +546,7 @@ struct radeon_gem { int radeon_gem_init(struct radeon_device *rdev); void radeon_gem_fini(struct radeon_device *rdev); -int radeon_gem_object_create(struct radeon_device *rdev, int size, +int radeon_gem_object_create(struct radeon_device *rdev, unsigned long size, int alignment, int initial_domain, u32 flags, bool discardable, bool kernel, struct drm_gem_object **obj); diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c index 1ec6244..eafe316 100644 --- a/drivers/gpu/drm/radeon/radeon_gem.c +++ b/drivers/gpu/drm/radeon/radeon_gem.c @@ -40,7 +40,7 @@ void radeon_gem_object_free(struct drm_gem_object *gobj) } } -int radeon_gem_object_create(struct radeon_device *rdev, int size, +int radeon_gem_object_create(struct radeon_device *rdev, unsigned long size, int alignment, int initial_domain, u32 flags, bool discardable, bool kernel, struct drm_gem_object **obj) @@ -55,10 +55,14 @@ int radeon_gem_object_create(struct radeon_device *rdev, int size, alignment = PAGE_SIZE; } - /* maximun bo size is the minimun btw visible vram and gtt size */ - max_size = min(rdev->mc.visible_vram_size, rdev->mc.gtt_size); + /* Maximum bo size is the unpinned gtt size since we use the gtt to + * handle vram to system pool migrations. We could probably remove + * this check altogether with a little additional work to support + * splitting vram <-> system transfers into multiple steps. + */ + max_size = rdev->mc.gtt_size - rdev->gart_pin_size; if (size > max_size) { - DRM_DEBUG("Allocation size %dMb bigger than %ldMb limit\n", + DRM_DEBUG("Allocation size %ldMb bigger than %ldMb limit\n", size >> 20, max_size >> 20); return -ENOMEM; } @@ -72,7 +76,7 @@ retry: initial_domain |= RADEON_GEM_DOMAIN_GTT; goto retry; } - DRM_ERROR("Failed to allocate GEM object (%d, %d, %u, %d)\n", + DRM_ERROR("Failed to allocate GEM object (%ld, %d, %u, %d)\n", size, initial_domain, alignment, r); } return r; -- 1.8.3.1
