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drm/i915: determine lmem_size properly

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

Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220511153746.14142-2-nirmoy.das@intel.com
This commit is contained in:
Nirmoy Das 2022-05-11 17:37:45 +02:00 committed by Matthew Auld
parent d158367c31
commit 8f6de23184
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/i915/gt/intel_region_lmem.c
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@ -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;