1 /* Common header for intel-gtt.ko and i915.ko */
3 #ifndef _DRM_INTEL_GTT_H
4 #define _DRM_INTEL_GTT_H
6 const struct intel_gtt {
7 /* Size of memory reserved for graphics by the BIOS */
8 unsigned int stolen_size;
9 /* Total number of gtt entries. */
10 unsigned int gtt_total_entries;
11 /* Part of the gtt that is mappable by the cpu, for those chips where
12 * this is not the full gtt. */
13 unsigned int gtt_mappable_entries;
14 /* Whether i915 needs to use the dmar apis or not. */
15 unsigned int needs_dmar : 1;
16 /* Whether we idle the gpu before mapping/unmapping */
17 unsigned int do_idle_maps : 1;
18 /* Share the scratch page dma with ppgtts. */
19 dma_addr_t scratch_page_dma;
20 /* for ppgtt PDE access */
22 /* needed for ioremap in drm/i915 */
23 phys_addr_t gma_bus_addr;
24 } *intel_gtt_get(void);
26 int intel_gmch_probe(struct pci_dev *bridge_pdev, struct pci_dev *gpu_pdev,
27 struct agp_bridge_data *bridge);
28 void intel_gmch_remove(void);
30 bool intel_enable_gtt(void);
32 void intel_gtt_chipset_flush(void);
33 void intel_gtt_unmap_memory(struct scatterlist *sg_list, int num_sg);
34 void intel_gtt_clear_range(unsigned int first_entry, unsigned int num_entries);
35 int intel_gtt_map_memory(struct page **pages, unsigned int num_entries,
36 struct scatterlist **sg_list, int *num_sg);
37 void intel_gtt_insert_sg_entries(struct scatterlist *sg_list,
39 unsigned int pg_start,
41 void intel_gtt_insert_pages(unsigned int first_entry, unsigned int num_entries,
42 struct page **pages, unsigned int flags);
44 /* Special gtt memory types */
45 #define AGP_DCACHE_MEMORY 1
46 #define AGP_PHYS_MEMORY 2
48 /* New caching attributes for gen6/sandybridge */
49 #define AGP_USER_CACHED_MEMORY_LLC_MLC (AGP_USER_TYPES + 2)
50 #define AGP_USER_UNCACHED_MEMORY (AGP_USER_TYPES + 4)
52 /* flag for GFDT type */
53 #define AGP_USER_CACHED_MEMORY_GFDT (1 << 3)
55 #ifdef CONFIG_INTEL_IOMMU
56 extern int intel_iommu_gfx_mapped;