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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/i915_vma.c | |
| parent | drm/i915/ttm: require mappable by default (diff) | |
| download | linux-dev-30b9d1b3ef374403652fc10fa36b9a5f32cc274d.tar.xz linux-dev-30b9d1b3ef374403652fc10fa36b9a5f32cc274d.zip | |
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/i915_vma.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_vma.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c index 3558b16a929c..dc28e6e3efef 100644 --- a/drivers/gpu/drm/i915/i915_vma.c +++ b/drivers/gpu/drm/i915/i915_vma.c @@ -540,6 +540,9 @@ void __iomem *i915_vma_pin_iomap(struct i915_vma *vma) void __iomem *ptr; int err; + if (WARN_ON_ONCE(vma->obj->flags & I915_BO_ALLOC_GPU_ONLY)) + return IO_ERR_PTR(-EINVAL); + if (!i915_gem_object_is_lmem(vma->obj)) { if (GEM_WARN_ON(!i915_vma_is_map_and_fenceable(vma))) { err = -ENODEV; |