mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 06:56:52 +07:00
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 */
|
|
|
|
#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
|