include/drm/intel-gtt.h

   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 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 */
  21         u32 __iomem *gtt;
  22 } *intel_gtt_get(void);
  23
  24 void intel_gtt_chipset_flush(void);
  25 void intel_gtt_unmap_memory(struct scatterlist *sg_list, int num_sg);
  26 void intel_gtt_clear_range(unsigned int first_entry, unsigned int num_entries);
  27 int intel_gtt_map_memory(struct page **pages, unsigned int num_entries,
  28                          struct scatterlist **sg_list, int *num_sg);
  29 void intel_gtt_insert_sg_entries(struct scatterlist *sg_list,
  30                                  unsigned int sg_len,
  31                                  unsigned int pg_start,
  32                                  unsigned int flags);
  33 void intel_gtt_insert_pages(unsigned int first_entry, unsigned int num_entries,
  34                             struct page **pages, unsigned int flags);
  35
  36 /* Special gtt memory types */
  37 #define AGP_DCACHE_MEMORY       1
  38 #define AGP_PHYS_MEMORY         2
  39
  40 /* New caching attributes for gen6/sandybridge */
  41 #define AGP_USER_CACHED_MEMORY_LLC_MLC (AGP_USER_TYPES + 2)
  42 #define AGP_USER_UNCACHED_MEMORY (AGP_USER_TYPES + 4)
  43
  44 /* flag for GFDT type */
  45 #define AGP_USER_CACHED_MEMORY_GFDT (1 << 3)
  46
  47 #ifdef CONFIG_INTEL_IOMMU
  48 extern int intel_iommu_gfx_mapped;
  49 #endif
  50
  51 #endif