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 41