diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_region_lmem.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_region_lmem.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_region_lmem.c b/drivers/gpu/drm/i915/gt/intel_region_lmem.c index f5111c0a0060..d09b996a9759 100644 --- a/drivers/gpu/drm/i915/gt/intel_region_lmem.c +++ b/drivers/gpu/drm/i915/gt/intel_region_lmem.c @@ -12,6 +12,7 @@ #include "gem/i915_gem_region.h" #include "gem/i915_gem_ttm.h" #include "gt/intel_gt.h" +#include "gt/intel_gt_mcr.h" #include "gt/intel_gt_regs.h" static int @@ -101,14 +102,24 @@ 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); - 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; + lmem_range = intel_gt_mcr_read_any(&i915->gt0, XEHP_TILE0_ADDR_RANGE) & 0xFFFF; + lmem_size = lmem_range >> XEHP_TILE_LMEM_RANGE_SHIFT; + lmem_size *= SZ_1G; + + flat_ccs_base = intel_gt_mcr_read_any(gt, XEHP_FLAT_CCS_BASE_ADDR); + flat_ccs_base = (flat_ccs_base >> XEHP_CCS_BASE_SHIFT) * SZ_64K; + + /* FIXME: Remove this when we have small-bar enabled */ + if (pci_resource_len(pdev, 2) < lmem_size) { + drm_err(&i915->drm, "System requires small-BAR support, which is currently unsupported on this kernel\n"); + return ERR_PTR(-EINVAL); + } if (GEM_WARN_ON(lmem_size < flat_ccs_base)) - return ERR_PTR(-ENODEV); + return ERR_PTR(-EIO); tile_stolen = lmem_size - flat_ccs_base; @@ -131,7 +142,7 @@ static struct intel_memory_region *setup_lmem(struct intel_gt *gt) io_start = pci_resource_start(pdev, 2); io_size = min(pci_resource_len(pdev, 2), lmem_size); if (!io_size) - return ERR_PTR(-ENODEV); + return ERR_PTR(-EIO); min_page_size = HAS_64K_PAGES(i915) ? I915_GTT_PAGE_SIZE_64K : I915_GTT_PAGE_SIZE_4K; |