1 /* SPDX-License-Identifier: MIT */ 2 /* 3 * Copyright © 2019 Intel Corporation 4 */ 5 6 #ifndef __INTEL_MEMORY_REGION_H__ 7 #define __INTEL_MEMORY_REGION_H__ 8 9 #include <linux/ioport.h> 10 #include <linux/mutex.h> 11 #include <linux/io-mapping.h> 12 #include <drm/drm_mm.h> 13 #include <uapi/drm/i915_drm.h> 14 15 struct drm_i915_private; 16 struct drm_i915_gem_object; 17 struct drm_printer; 18 struct intel_memory_region; 19 struct sg_table; 20 struct ttm_resource; 21 22 enum intel_memory_type { 23 INTEL_MEMORY_SYSTEM = I915_MEMORY_CLASS_SYSTEM, 24 INTEL_MEMORY_LOCAL = I915_MEMORY_CLASS_DEVICE, 25 INTEL_MEMORY_STOLEN_SYSTEM, 26 INTEL_MEMORY_STOLEN_LOCAL, 27 INTEL_MEMORY_MOCK, 28 }; 29 30 enum intel_region_id { 31 INTEL_REGION_SMEM = 0, 32 INTEL_REGION_LMEM_0, 33 INTEL_REGION_LMEM_1, 34 INTEL_REGION_LMEM_2, 35 INTEL_REGION_LMEM_3, 36 INTEL_REGION_STOLEN_SMEM, 37 INTEL_REGION_STOLEN_LMEM, 38 INTEL_REGION_UNKNOWN, /* Should be last */ 39 }; 40 41 #define I915_ALLOC_CONTIGUOUS BIT(0) 42 43 #define for_each_memory_region(mr, i915, id) \ 44 for (id = 0; id < ARRAY_SIZE((i915)->mm.regions); id++) \ 45 for_each_if((mr) = (i915)->mm.regions[id]) 46 47 struct intel_memory_region_ops { 48 int (*init)(struct intel_memory_region *mem); 49 int (*release)(struct intel_memory_region *mem); 50 51 int (*init_object)(struct intel_memory_region *mem, 52 struct drm_i915_gem_object *obj, 53 resource_size_t offset, 54 resource_size_t size, 55 resource_size_t page_size, 56 unsigned int flags); 57 }; 58 59 struct intel_memory_region { 60 struct drm_i915_private *i915; 61 62 const struct intel_memory_region_ops *ops; 63 64 struct io_mapping iomap; 65 struct resource region; 66 67 struct resource io; 68 resource_size_t min_page_size; 69 resource_size_t total; 70 71 u16 type; 72 u16 instance; 73 enum intel_region_id id; 74 char name[16]; 75 char uabi_name[16]; 76 bool private; /* not for userspace */ 77 78 struct { 79 struct mutex lock; /* Protects access to objects */ 80 struct list_head list; 81 } objects; 82 83 bool is_range_manager; 84 85 void *region_private; 86 }; 87 88 struct intel_memory_region * 89 intel_memory_region_lookup(struct drm_i915_private *i915, 90 u16 class, u16 instance); 91 92 struct intel_memory_region * 93 intel_memory_region_create(struct drm_i915_private *i915, 94 resource_size_t start, 95 resource_size_t size, 96 resource_size_t min_page_size, 97 resource_size_t io_start, 98 resource_size_t io_size, 99 u16 type, 100 u16 instance, 101 const struct intel_memory_region_ops *ops); 102 103 void intel_memory_region_destroy(struct intel_memory_region *mem); 104 105 int intel_memory_regions_hw_probe(struct drm_i915_private *i915); 106 void intel_memory_regions_driver_release(struct drm_i915_private *i915); 107 struct intel_memory_region * 108 intel_memory_region_by_type(struct drm_i915_private *i915, 109 enum intel_memory_type mem_type); 110 111 __printf(2, 3) void 112 intel_memory_region_set_name(struct intel_memory_region *mem, 113 const char *fmt, ...); 114 115 int intel_memory_region_reserve(struct intel_memory_region *mem, 116 resource_size_t offset, 117 resource_size_t size); 118 119 void intel_memory_region_debug(struct intel_memory_region *mr, 120 struct drm_printer *printer); 121 122 void intel_memory_region_avail(struct intel_memory_region *mr, 123 u64 *avail, u64 *visible_avail); 124 125 struct intel_memory_region * 126 i915_gem_ttm_system_setup(struct drm_i915_private *i915, 127 u16 type, u16 instance); 128 struct intel_memory_region * 129 i915_gem_shmem_setup(struct drm_i915_private *i915, 130 u16 type, u16 instance); 131 132 #endif 133