| 363,6 → 363,40 |
|---|
| intel_gtt_teardown_scratch_page(); |
| } |
| |
| /* Certain Gen5 chipsets require require idling the GPU before |
| * unmapping anything from the GTT when VT-d is enabled. |
| */ |
| static inline int needs_ilk_vtd_wa(void) |
| { |
| #ifdef CONFIG_INTEL_IOMMU |
| const unsigned short gpu_devid = intel_private.pcidev->device; |
| |
| /* Query intel_iommu to see if we need the workaround. Presumably that |
| * was loaded first. |
| */ |
| if ((gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_M_HB || |
| gpu_devid == PCI_DEVICE_ID_INTEL_IRONLAKE_M_IG) && |
| intel_iommu_gfx_mapped) |
| return 1; |
| #endif |
| return 0; |
| } |
| |
| static bool intel_gtt_can_wc(void) |
| { |
| if (INTEL_GTT_GEN <= 2) |
| return false; |
| |
| if (INTEL_GTT_GEN >= 6) |
| return false; |
| |
| /* Reports of major corruption with ILK vt'd enabled */ |
| if (needs_ilk_vtd_wa()) |
| return false; |
| |
| return true; |
| } |
| |
| static int intel_gtt_init(void) |
| { |
| u32 gma_addr; |