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 REGION_SMEM BIT(INTEL_REGION_SMEM) 42 #define REGION_LMEM BIT(INTEL_REGION_LMEM_0) 43 #define REGION_STOLEN_SMEM BIT(INTEL_REGION_STOLEN_SMEM) 44 #define REGION_STOLEN_LMEM BIT(INTEL_REGION_STOLEN_LMEM) 45 46 #define I915_ALLOC_CONTIGUOUS BIT(0) 47 48 #define for_each_memory_region(mr, i915, id) \ 49 for (id = 0; id < ARRAY_SIZE((i915)->mm.regions); id++) \ 50 for_each_if((mr) = (i915)->mm.regions[id]) 51 52 struct intel_memory_region_ops { 53 int (*init)(struct intel_memory_region *mem); 54 int (*release)(struct intel_memory_region *mem); 55 56 int (*init_object)(struct intel_memory_region *mem, 57 struct drm_i915_gem_object *obj, 58 resource_size_t offset, 59 resource_size_t size, 60 resource_size_t page_size, 61 unsigned int flags); 62 }; 63 64 struct intel_memory_region { 65 struct drm_i915_private *i915; 66 67 const struct intel_memory_region_ops *ops; 68 69 struct io_mapping iomap; 70 struct resource region; 71 72 struct resource io; 73 resource_size_t min_page_size; 74 resource_size_t total; 75 76 u16 type; 77 u16 instance; 78 enum intel_region_id id; 79 char name[16]; 80 char uabi_name[16]; 81 bool private; /* not for userspace */ 82 83 struct { 84 struct mutex lock; /* Protects access to objects */ 85 struct list_head list; 86 } objects; 87 88 bool is_range_manager; 89 90 void *region_private; 91 }; 92 93 struct intel_memory_region * 94 intel_memory_region_lookup(struct drm_i915_private *i915, 95 u16 class, u16 instance); 96 97 struct intel_memory_region * 98 intel_memory_region_create(struct drm_i915_private *i915, 99 resource_size_t start, 100 resource_size_t size, 101 resource_size_t min_page_size, 102 resource_size_t io_start, 103 resource_size_t io_size, 104 u16 type, 105 u16 instance, 106 const struct intel_memory_region_ops *ops); 107 108 void intel_memory_region_destroy(struct intel_memory_region *mem); 109 110 int intel_memory_regions_hw_probe(struct drm_i915_private *i915); 111 void intel_memory_regions_driver_release(struct drm_i915_private *i915); 112 struct intel_memory_region * 113 intel_memory_region_by_type(struct drm_i915_private *i915, 114 enum intel_memory_type mem_type); 115 116 __printf(2, 3) void 117 intel_memory_region_set_name(struct intel_memory_region *mem, 118 const char *fmt, ...); 119 120 int intel_memory_region_reserve(struct intel_memory_region *mem, 121 resource_size_t offset, 122 resource_size_t size); 123 124 void intel_memory_region_debug(struct intel_memory_region *mr, 125 struct drm_printer *printer); 126 127 void intel_memory_region_avail(struct intel_memory_region *mr, 128 u64 *avail, u64 *visible_avail); 129 130 struct intel_memory_region * 131 i915_gem_ttm_system_setup(struct drm_i915_private *i915, 132 u16 type, u16 instance); 133 struct intel_memory_region * 134 i915_gem_shmem_setup(struct drm_i915_private *i915, 135 u16 type, u16 instance); 136 137 #endif 138