diff options
Diffstat (limited to 'drivers/char/agp/intel-gtt.c')
| -rw-r--r-- | drivers/char/agp/intel-gtt.c | 50 |
1 files changed, 40 insertions, 10 deletions
diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c index 7f35854d33a3..64b10551a3f8 100644 --- a/drivers/char/agp/intel-gtt.c +++ b/drivers/char/agp/intel-gtt.c @@ -49,6 +49,26 @@ static struct gatt_mask intel_i810_masks[] = .type = INTEL_AGP_CACHED_MEMORY} }; +#define INTEL_AGP_UNCACHED_MEMORY 0 +#define INTEL_AGP_CACHED_MEMORY_LLC 1 +#define INTEL_AGP_CACHED_MEMORY_LLC_GFDT 2 +#define INTEL_AGP_CACHED_MEMORY_LLC_MLC 3 +#define INTEL_AGP_CACHED_MEMORY_LLC_MLC_GFDT 4 + +static struct gatt_mask intel_gen6_masks[] = +{ + {.mask = I810_PTE_VALID | GEN6_PTE_UNCACHED, + .type = INTEL_AGP_UNCACHED_MEMORY }, + {.mask = I810_PTE_VALID | GEN6_PTE_LLC, + .type = INTEL_AGP_CACHED_MEMORY_LLC }, + {.mask = I810_PTE_VALID | GEN6_PTE_LLC | GEN6_PTE_GFDT, + .type = INTEL_AGP_CACHED_MEMORY_LLC_GFDT }, + {.mask = I810_PTE_VALID | GEN6_PTE_LLC_MLC, + .type = INTEL_AGP_CACHED_MEMORY_LLC_MLC }, + {.mask = I810_PTE_VALID | GEN6_PTE_LLC_MLC | GEN6_PTE_GFDT, + .type = INTEL_AGP_CACHED_MEMORY_LLC_MLC_GFDT }, +}; + static struct _intel_private { struct pci_dev *pcidev; /* device one */ u8 __iomem *registers; @@ -178,13 +198,6 @@ static void intel_agp_insert_sg_entries(struct agp_memory *mem, off_t pg_start, int mask_type) { int i, j; - u32 cache_bits = 0; - - if (agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_HB || - agp_bridge->dev->device == PCI_DEVICE_ID_INTEL_SANDYBRIDGE_M_HB) - { - cache_bits = GEN6_PTE_LLC_MLC; - } for (i = 0, j = pg_start; i < mem->page_count; i++, j++) { writel(agp_bridge->driver->mask_memory(agp_bridge, @@ -317,6 +330,23 @@ static int intel_i830_type_to_mask_type(struct agp_bridge_data *bridge, return 0; } +static int intel_gen6_type_to_mask_type(struct agp_bridge_data *bridge, + int type) +{ + unsigned int type_mask = type & ~AGP_USER_CACHED_MEMORY_GFDT; + unsigned int gfdt = type & AGP_USER_CACHED_MEMORY_GFDT; + + if (type_mask == AGP_USER_UNCACHED_MEMORY) + return INTEL_AGP_UNCACHED_MEMORY; + else if (type_mask == AGP_USER_CACHED_MEMORY_LLC_MLC) + return gfdt ? INTEL_AGP_CACHED_MEMORY_LLC_MLC_GFDT : + INTEL_AGP_CACHED_MEMORY_LLC_MLC; + else /* set 'normal'/'cached' to LLC by default */ + return gfdt ? INTEL_AGP_CACHED_MEMORY_LLC_GFDT : + INTEL_AGP_CACHED_MEMORY_LLC; +} + + static int intel_i810_insert_entries(struct agp_memory *mem, off_t pg_start, int type) { @@ -1163,7 +1193,7 @@ static int intel_i915_insert_entries(struct agp_memory *mem, off_t pg_start, mask_type = agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type); - if (mask_type != 0 && mask_type != AGP_PHYS_MEMORY && + if (!IS_SNB && mask_type != 0 && mask_type != AGP_PHYS_MEMORY && mask_type != INTEL_AGP_CACHED_MEMORY) goto out_err; @@ -1563,7 +1593,7 @@ static const struct agp_bridge_driver intel_gen6_driver = { .fetch_size = intel_i9xx_fetch_size, .cleanup = intel_i915_cleanup, .mask_memory = intel_gen6_mask_memory, - .masks = intel_i810_masks, + .masks = intel_gen6_masks, .agp_enable = intel_i810_agp_enable, .cache_flush = global_cache_flush, .create_gatt_table = intel_i965_create_gatt_table, @@ -1576,7 +1606,7 @@ static const struct agp_bridge_driver intel_gen6_driver = { .agp_alloc_pages = agp_generic_alloc_pages, .agp_destroy_page = agp_generic_destroy_page, .agp_destroy_pages = agp_generic_destroy_pages, - .agp_type_to_mask_type = intel_i830_type_to_mask_type, + .agp_type_to_mask_type = intel_gen6_type_to_mask_type, .chipset_flush = intel_i915_chipset_flush, #ifdef USE_PCI_DMA_API .agp_map_page = intel_agp_map_page, |