drm/i915: add I915_BO_ALLOC_GPU_ONLY

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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

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This commit is contained in:

Matthew Auld 2022-02-25 14:54:58 +00:00

parent 3312a4ac8a

commit 30b9d1b3ef

8 changed files with 45 additions and 18 deletions

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17

drivers/gpu/drm/i915/gem/i915_gem_object_types.h

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3

drivers/gpu/drm/i915/gem/i915_gem_pages.c

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5

drivers/gpu/drm/i915/gem/i915_gem_region.c

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13

drivers/gpu/drm/i915/gem/i915_gem_ttm.c

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4

drivers/gpu/drm/i915/gt/intel_gt.c

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3

drivers/gpu/drm/i915/i915_vma.c

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11

drivers/gpu/drm/i915/intel_region_ttm.c

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7

drivers/gpu/drm/i915/selftests/mock_region.c

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