From 8f6de23184452793e60945a26ac40db435d7798d Mon Sep 17 00:00:00 2001 From: Nirmoy Das Date: Wed, 11 May 2022 17:37:45 +0200 Subject: [PATCH] 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: Nirmoy Das Reviewed-by: Matthew Auld Signed-off-by: Matthew Auld Link: https://patchwork.freedesktop.org/patch/msgid/20220511153746.14142-2-nirmoy.das@intel.com --- drivers/gpu/drm/i915/gt/intel_region_lmem.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/gt/intel_region_lmem.c b/drivers/gpu/drm/i915/gt/intel_region_lmem.c index 5a7c403..cd105ec 100644 --- a/drivers/gpu/drm/i915/gt/intel_region_lmem.c +++ b/drivers/gpu/drm/i915/gt/intel_region_lmem.c @@ -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; -- 2.7.4