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5c0422878f
Idle the GPU before doing any unmaps. We know if VT-d is in use through an exported variable from iommu code. This should avoid a known HW issue. Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Keith Packard <keithp@keithp.com>
44 lines
1.5 KiB
C
44 lines
1.5 KiB
C
/* Common header for intel-gtt.ko and i915.ko */
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#ifndef _DRM_INTEL_GTT_H
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#define _DRM_INTEL_GTT_H
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const struct intel_gtt {
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/* Size of memory reserved for graphics by the BIOS */
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unsigned int stolen_size;
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/* Total number of gtt entries. */
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unsigned int gtt_total_entries;
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/* Part of the gtt that is mappable by the cpu, for those chips where
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* this is not the full gtt. */
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unsigned int gtt_mappable_entries;
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/* Whether i915 needs to use the dmar apis or not. */
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unsigned int needs_dmar : 1;
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/* Whether we idle the gpu before mapping/unmapping */
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unsigned int do_idle_maps : 1;
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} *intel_gtt_get(void);
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void intel_gtt_chipset_flush(void);
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void intel_gtt_unmap_memory(struct scatterlist *sg_list, int num_sg);
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void intel_gtt_clear_range(unsigned int first_entry, unsigned int num_entries);
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int intel_gtt_map_memory(struct page **pages, unsigned int num_entries,
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struct scatterlist **sg_list, int *num_sg);
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void intel_gtt_insert_sg_entries(struct scatterlist *sg_list,
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unsigned int sg_len,
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unsigned int pg_start,
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unsigned int flags);
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void intel_gtt_insert_pages(unsigned int first_entry, unsigned int num_entries,
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struct page **pages, unsigned int flags);
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/* Special gtt memory types */
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#define AGP_DCACHE_MEMORY 1
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#define AGP_PHYS_MEMORY 2
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/* New caching attributes for gen6/sandybridge */
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#define AGP_USER_CACHED_MEMORY_LLC_MLC (AGP_USER_TYPES + 2)
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#define AGP_USER_UNCACHED_MEMORY (AGP_USER_TYPES + 4)
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/* flag for GFDT type */
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#define AGP_USER_CACHED_MEMORY_GFDT (1 << 3)
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#endif
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