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drm/i915/lmem: don't treat small BAR as an error

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Just pass along the probed io_size. The backend should be able to
utilize the entire range here, even if some of it is non-mappable.

It does leave open with what to do with stolen local-memory.

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>
Reviewed-by: Nirmoy Das <nirmoy.das@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220315181425.576828-1-matthew.auld@intel.com
This commit is contained in:
Matthew Auld 2022-03-15 18:14:19 +00:00
parent 31a86f0019
commit 56eda725c9
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/i915/gt/intel_region_lmem.c
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@ -93,6 +93,7 @@ static struct intel_memory_region *setup_lmem(struct intel_gt *gt)
struct intel_memory_region *mem;
resource_size_t min_page_size;
resource_size_t io_start;
resource_size_t io_size;
resource_size_t lmem_size;
int err;
@ -124,7 +125,8 @@ static struct intel_memory_region *setup_lmem(struct intel_gt *gt)
io_start = pci_resource_start(pdev, 2);
if (GEM_WARN_ON(lmem_size > pci_resource_len(pdev, 2)))
io_size = min(pci_resource_len(pdev, 2), lmem_size);
if (!io_size)
return ERR_PTR(-ENODEV);
min_page_size = HAS_64K_PAGES(i915) ? I915_GTT_PAGE_SIZE_64K :
@ -134,7 +136,7 @@ static struct intel_memory_region *setup_lmem(struct intel_gt *gt)
lmem_size,
min_page_size,
io_start,
lmem_size,
io_size,
INTEL_MEMORY_LOCAL,
0,
&intel_region_lmem_ops);