tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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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 /* Share the scratch page dma with ppgtts. */
19 dma_addr_t scratch_page_dma;
20 /* for ppgtt PDE access */
21 u32 __iomem *gtt;
22 /* needed for ioremap in drm/i915 */
23 phys_addr_t gma_bus_addr;
24} *intel_gtt_get(void);
25
26int intel_gmch_probe(struct pci_dev *bridge_pdev, struct pci_dev *gpu_pdev,
27 struct agp_bridge_data *bridge);
28void intel_gmch_remove(void);
29
30bool intel_enable_gtt(void);
31
32void intel_gtt_chipset_flush(void);
33void intel_gtt_unmap_memory(struct scatterlist *sg_list, int num_sg);
34void intel_gtt_clear_range(unsigned int first_entry, unsigned int num_entries);
35int intel_gtt_map_memory(struct page **pages, unsigned int num_entries,
36 struct scatterlist **sg_list, int *num_sg);
37void intel_gtt_insert_sg_entries(struct scatterlist *sg_list,
38 unsigned int sg_len,
39 unsigned int pg_start,
40 unsigned int flags);
41void intel_gtt_insert_pages(unsigned int first_entry, unsigned int num_entries,
42 struct page **pages, unsigned int flags);
43
44/* Special gtt memory types */
45#define AGP_DCACHE_MEMORY 1
46#define AGP_PHYS_MEMORY 2
47
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)
51
52/* flag for GFDT type */
53#define AGP_USER_CACHED_MEMORY_GFDT (1 << 3)
54
55#ifdef CONFIG_INTEL_IOMMU
56extern int intel_iommu_gfx_mapped;
57#endif
58
59#endif