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Linux kernel mirror (for testing)
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linux
1/* Common header for intel-gtt.ko and i915.ko */
2
3#ifndef _DRM_INTEL_GTT_H
4#define _DRM_INTEL_GTT_H
5
6const 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} *intel_gtt_get(void);
19
20void intel_gtt_chipset_flush(void);
21void intel_gtt_unmap_memory(struct scatterlist *sg_list, int num_sg);
22void intel_gtt_clear_range(unsigned int first_entry, unsigned int num_entries);
23int intel_gtt_map_memory(struct page **pages, unsigned int num_entries,
24 struct scatterlist **sg_list, int *num_sg);
25void intel_gtt_insert_sg_entries(struct scatterlist *sg_list,
26 unsigned int sg_len,
27 unsigned int pg_start,
28 unsigned int flags);
29void intel_gtt_insert_pages(unsigned int first_entry, unsigned int num_entries,
30 struct page **pages, unsigned int flags);
31
32/* Special gtt memory types */
33#define AGP_DCACHE_MEMORY 1
34#define AGP_PHYS_MEMORY 2
35
36/* New caching attributes for gen6/sandybridge */
37#define AGP_USER_CACHED_MEMORY_LLC_MLC (AGP_USER_TYPES + 2)
38#define AGP_USER_UNCACHED_MEMORY (AGP_USER_TYPES + 4)
39
40/* flag for GFDT type */
41#define AGP_USER_CACHED_MEMORY_GFDT (1 << 3)
42
43#endif