tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
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
6struct 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 struct page *scratch_page;
21 /* for ppgtt PDE access */
22 u32 __iomem *gtt;
23 /* needed for ioremap in drm/i915 */
24 phys_addr_t gma_bus_addr;
25} *intel_gtt_get(void);
26
27int intel_gmch_probe(struct pci_dev *bridge_pdev, struct pci_dev *gpu_pdev,
28 struct agp_bridge_data *bridge);
29void intel_gmch_remove(void);
30
31bool intel_enable_gtt(void);
32
33void intel_gtt_chipset_flush(void);
34void intel_gtt_insert_sg_entries(struct sg_table *st,
35 unsigned int pg_start,
36 unsigned int flags);
37void 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/* flag for GFDT type */
44#define AGP_USER_CACHED_MEMORY_GFDT (1 << 3)
45
46#ifdef CONFIG_INTEL_IOMMU
47extern int intel_iommu_gfx_mapped;
48#endif
49
50#endif