Determine lmem_size using ADDR_RANGE register so that module load on platfrom with small bar with css works. Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxxxx> --- I once reserved a dg2 machine with small bar and module load failed on it. I can't find that machine anymore hence sending this as RFC. drivers/gpu/drm/i915/gt/intel_region_lmem.c | 11 ++++++++++- 1 file changed, 10 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 f5111c0a0060..a55eecac104e 100644 --- a/drivers/gpu/drm/i915/gt/intel_region_lmem.c +++ b/drivers/gpu/drm/i915/gt/intel_region_lmem.c @@ -100,10 +100,19 @@ static struct intel_memory_region *setup_lmem(struct intel_gt *gt) if (!IS_DGFX(i915)) return ERR_PTR(-ENODEV); + if (IS_DG1(uncore->i915)) { + lmem_size = pci_resource_len(pdev, 2); + } else { + resource_size_t lmem_range; + + 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; + } + if (HAS_FLAT_CCS(i915)) { u64 tile_stolen, flat_ccs_base; - lmem_size = pci_resource_len(pdev, 2); 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; -- 2.35.1