Commit 8f6de231 authored by Nirmoy Das's avatar Nirmoy Das Committed by Matthew Auld
Browse files

drm/i915: determine lmem_size properly 



Determine lmem_size using ADDR_RANGE register so that lmem_setup()
works on platform with small-bar as well.

Signed-off-by: default avatarNirmoy Das <nirmoy.das@intel.com>
Reviewed-by: default avatarMatthew Auld <matthew.auld@intel.com>
Signed-off-by: default avatarMatthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220511153746.14142-2-nirmoy.das@intel.com
parent d158367c

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

+5 −1
Original line number Diff line number Diff line
@@ -101,9 +101,13 @@ static struct intel_memory_region *setup_lmem(struct intel_gt *gt) 
		return ERR_PTR(-ENODEV);



	if (HAS_FLAT_CCS(i915)) {

		resource_size_t lmem_range;

		u64 tile_stolen, flat_ccs_base;



		lmem_size = pci_resource_len(pdev, 2);

		lmem_range = intel_gt_read_register(&i915->gt0, XEHPSDV_TILE0_ADDR_RANGE) & 0xFFFF;

		lmem_size = lmem_range >> XEHPSDV_TILE_LMEM_RANGE_SHIFT;

		lmem_size *= SZ_1G;



		flat_ccs_base = intel_gt_read_register(gt, XEHPSDV_FLAT_CCS_BASE_ADDR);

		flat_ccs_base = (flat_ccs_base >> XEHPSDV_CCS_BASE_SHIFT) * SZ_64K;