Commit 56eda725 authored by Matthew Auld's avatar Matthew Auld
Browse files

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



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: default avatarMatthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: default avatarThomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: default avatarNirmoy Das <nirmoy.das@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220315181425.576828-1-matthew.auld@intel.com
parent 31a86f00

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

+4 −2
Original line number Diff line number Diff line
@@ -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);