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/intel-iommu.h> 9 #include <linux/kernel.h> 10 11 void intel_gtt_get(u64 *gtt_total, 12 phys_addr_t *mappable_base, 13 resource_size_t *mappable_end); 14 15 int intel_gmch_probe(struct pci_dev *bridge_pdev, struct pci_dev *gpu_pdev, 16 struct agp_bridge_data *bridge); 17 void intel_gmch_remove(void); 18 19 bool intel_enable_gtt(void); 20 21 void intel_gtt_chipset_flush(void); 22 void intel_gtt_insert_page(dma_addr_t addr, 23 unsigned int pg, 24 unsigned int flags); 25 void intel_gtt_insert_sg_entries(struct sg_table *st, 26 unsigned int pg_start, 27 unsigned int flags); 28 void intel_gtt_clear_range(unsigned int first_entry, unsigned int num_entries); 29 30 /* Special gtt memory types */ 31 #define AGP_DCACHE_MEMORY 1 32 #define AGP_PHYS_MEMORY 2 33 34 /* flag for GFDT type */ 35 #define AGP_USER_CACHED_MEMORY_GFDT (1 << 3) 36 37 #endif 38