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| author | Matthew Auld <matthew.auld@intel.com> | 2022-02-25 17:54:58 +0300 |
|---|---|---|
| committer | Matthew Auld <matthew.auld@intel.com> | 2022-02-28 11:47:34 +0300 |
| commit | 30b9d1b3ef374403652fc10fa36b9a5f32cc274d (patch) | |
| tree | f1f3ca4f008cb8cd0b9c1aff5d5b26441c4f736f /drivers/gpu/drm/i915/intel_region_ttm.c | |
| parent | 3312a4ac8a464daa66b97452ec148b69c5959bec (diff) | |
| download | linux-30b9d1b3ef374403652fc10fa36b9a5f32cc274d.tar.xz | |
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/intel_region_ttm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_region_ttm.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_region_ttm.c b/drivers/gpu/drm/i915/intel_region_ttm.c index 5a40310d6fdd..6cfe9090ede7 100644 --- a/drivers/gpu/drm/i915/intel_region_ttm.c +++ b/drivers/gpu/drm/i915/intel_region_ttm.c @@ -199,14 +199,19 @@ intel_region_ttm_resource_alloc(struct intel_memory_region *mem, struct ttm_resource *res; int ret; + if (flags & I915_BO_ALLOC_CONTIGUOUS) + place.flags |= TTM_PL_FLAG_CONTIGUOUS; if (mem->io_size && mem->io_size < mem->total) { - place.fpfn = 0; - place.lpfn = mem->io_size >> PAGE_SHIFT; + if (flags & I915_BO_ALLOC_GPU_ONLY) { + place.flags |= TTM_PL_FLAG_TOPDOWN; + } else { + place.fpfn = 0; + place.lpfn = mem->io_size >> PAGE_SHIFT; + } } mock_bo.base.size = size; mock_bo.bdev = &mem->i915->bdev; - place.flags = flags; ret = man->func->alloc(man, &mock_bo, &place, &res); if (ret == -ENOSPC) |