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| author | Matthew Auld <matthew.auld@intel.com> | 2022-02-25 14:54:58 +0000 |
|---|---|---|
| committer | Matthew Auld <matthew.auld@intel.com> | 2022-02-28 08:47:34 +0000 |
| commit | 30b9d1b3ef374403652fc10fa36b9a5f32cc274d (patch) | |
| tree | f1f3ca4f008cb8cd0b9c1aff5d5b26441c4f736f /drivers/gpu/drm/i915/gem/i915_gem_pages.c | |
| parent | 3312a4ac8a464daa66b97452ec148b69c5959bec (diff) | |
| download | linux-30b9d1b3ef374403652fc10fa36b9a5f32cc274d.tar.gz | |
drm/i915: add I915_BO_ALLOC_GPU_ONLY
If the user doesn't require CPU access for the buffer, then
ALLOC_GPU_ONLY should be used, in order to prioritise allocating in the
non-mappable portion of LMEM, on devices with small BAR.
v2(Thomas):
- The BO_ALLOC_TOPDOWN naming here is poor, since this is pure lies on
systems that don't even have small BAR. A better name is GPU_ONLY,
which is accurate regardless of the configuration.
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Acked-by: Nirmoy Das <nirmoy.das@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220225145502.331818-3-matthew.auld@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gem/i915_gem_pages.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_pages.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pages.c b/drivers/gpu/drm/i915/gem/i915_gem_pages.c index 183b861620b8..97c820eee115 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_pages.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_pages.c @@ -358,6 +358,9 @@ void *i915_gem_object_pin_map(struct drm_i915_gem_object *obj, !i915_gem_object_has_iomem(obj)) return ERR_PTR(-ENXIO); + if (WARN_ON_ONCE(obj->flags & I915_BO_ALLOC_GPU_ONLY)) + return ERR_PTR(-EINVAL); + assert_object_held(obj); pinned = !(type & I915_MAP_OVERRIDE); |