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  1. /* Common header for intel-gtt.ko and i915.ko */
  2.  
  3. #ifndef _DRM_INTEL_GTT_H
  4. #define _DRM_INTEL_GTT_H
  5.  
  6. struct agp_bridge_data;
  7.  
  8. struct intel_gtt {
  9.         /* Size of memory reserved for graphics by the BIOS */
  10.         unsigned int stolen_size;
  11.         /* Total number of gtt entries. */
  12.         unsigned int gtt_total_entries;
  13.         /* Part of the gtt that is mappable by the cpu, for those chips where
  14.          * this is not the full gtt. */
  15.         unsigned int gtt_mappable_entries;
  16.         /* Whether i915 needs to use the dmar apis or not. */
  17.         unsigned int needs_dmar : 1;
  18.         /* Whether we idle the gpu before mapping/unmapping */
  19.         unsigned int do_idle_maps : 1;
  20.         /* Share the scratch page dma with ppgtts. */
  21.         dma_addr_t scratch_page_dma;
  22.         /* for ppgtt PDE access */
  23.         u32 __iomem *gtt;
  24.         /* needed for ioremap in drm/i915 */
  25.         phys_addr_t gma_bus_addr;
  26. } *intel_gtt_get(void);
  27.  
  28. int intel_gmch_probe(struct pci_dev *bridge_pdev, struct pci_dev *gpu_pdev,
  29.                      struct agp_bridge_data *bridge);
  30. void intel_gmch_remove(void);
  31.  
  32. bool intel_enable_gtt(void);
  33.  
  34. void intel_gtt_chipset_flush(void);
  35. void intel_gtt_insert_sg_entries(struct pagelist *st, unsigned int pg_start,
  36.                                  unsigned int flags);
  37. void intel_gtt_clear_range(unsigned int first_entry, unsigned int num_entries);
  38.  
  39. /* Special gtt memory types */
  40. #define AGP_DCACHE_MEMORY       1
  41. #define AGP_PHYS_MEMORY         2
  42.  
  43. /* New caching attributes for gen6/sandybridge */
  44. #define AGP_USER_CACHED_MEMORY_LLC_MLC (AGP_USER_TYPES + 2)
  45. #define AGP_USER_UNCACHED_MEMORY (AGP_USER_TYPES + 4)
  46.  
  47. /* flag for GFDT type */
  48. #define AGP_USER_CACHED_MEMORY_GFDT (1 << 3)
  49.  
  50. #ifdef CONFIG_INTEL_IOMMU
  51. extern int intel_iommu_gfx_mapped;
  52. #endif
  53.  
  54. #endif
  55.