intel-gtt.h
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/* Common header for intel-gtt.ko and i915.ko */
#ifndef _DRM_INTEL_GTT_H
#define _DRM_INTEL_GTT_H
const struct intel_gtt {
/* Size of memory reserved for graphics by the BIOS */
unsigned int stolen_size;
/* Total number of gtt entries. */
unsigned int gtt_total_entries;
/* Part of the gtt that is mappable by the cpu, for those chips where
* this is not the full gtt. */
unsigned int gtt_mappable_entries;
/* Whether i915 needs to use the dmar apis or not. */
unsigned int needs_dmar : 1;
/* Whether we idle the gpu before mapping/unmapping */
unsigned int do_idle_maps : 1;
} *intel_gtt_get(void);
void intel_gtt_chipset_flush(void);
void intel_gtt_unmap_memory(struct scatterlist *sg_list, int num_sg);
void intel_gtt_clear_range(unsigned int first_entry, unsigned int num_entries);
int intel_gtt_map_memory(struct page **pages, unsigned int num_entries,
struct scatterlist **sg_list, int *num_sg);
void intel_gtt_insert_sg_entries(struct scatterlist *sg_list,
unsigned int sg_len,
unsigned int pg_start,
unsigned int flags);
void intel_gtt_insert_pages(unsigned int first_entry, unsigned int num_entries,
struct page **pages, unsigned int flags);
/* Special gtt memory types */
#define AGP_DCACHE_MEMORY 1
#define AGP_PHYS_MEMORY 2
/* New caching attributes for gen6/sandybridge */
#define AGP_USER_CACHED_MEMORY_LLC_MLC (AGP_USER_TYPES + 2)
#define AGP_USER_UNCACHED_MEMORY (AGP_USER_TYPES + 4)
/* flag for GFDT type */
#define AGP_USER_CACHED_MEMORY_GFDT (1 << 3)
#endif