root/include/drm/intel-gtt.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Common header for intel-gtt.ko and i915.ko */
   3 
   4 #ifndef _DRM_INTEL_GTT_H
   5 #define _DRM_INTEL_GTT_H
   6 
   7 #include <linux/agp_backend.h>
   8 #include <linux/kernel.h>
   9 
  10 void intel_gtt_get(u64 *gtt_total,
  11                    phys_addr_t *mappable_base,
  12                    resource_size_t *mappable_end);
  13 
  14 int intel_gmch_probe(struct pci_dev *bridge_pdev, struct pci_dev *gpu_pdev,
  15                      struct agp_bridge_data *bridge);
  16 void intel_gmch_remove(void);
  17 
  18 bool intel_enable_gtt(void);
  19 
  20 void intel_gtt_chipset_flush(void);
  21 void intel_gtt_insert_page(dma_addr_t addr,
  22                            unsigned int pg,
  23                            unsigned int flags);
  24 void intel_gtt_insert_sg_entries(struct sg_table *st,
  25                                  unsigned int pg_start,
  26                                  unsigned int flags);
  27 void intel_gtt_clear_range(unsigned int first_entry, unsigned int num_entries);
  28 
  29 /* Special gtt memory types */
  30 #define AGP_DCACHE_MEMORY       1
  31 #define AGP_PHYS_MEMORY         2
  32 
  33 /* flag for GFDT type */
  34 #define AGP_USER_CACHED_MEMORY_GFDT (1 << 3)
  35 
  36 #ifdef CONFIG_INTEL_IOMMU
  37 extern int intel_iommu_gfx_mapped;
  38 #endif
  39 
  40 #endif