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 unsigned int flags; 54 55 int (*init)(struct intel_memory_region *mem); 56 int (*release)(struct intel_memory_region *mem); 57 58 int (*init_object)(struct intel_memory_region *mem, 59 struct drm_i915_gem_object *obj, 60 resource_size_t offset, 61 resource_size_t size, 62 resource_size_t page_size, 63 unsigned int flags); 64 }; 65 66 struct intel_memory_region { 67 struct drm_i915_private *i915; 68 69 const struct intel_memory_region_ops *ops; 70 71 struct io_mapping iomap; 72 struct resource region; 73 74 resource_size_t io_start; 75 resource_size_t io_size; 76 resource_size_t min_page_size; 77 resource_size_t total; 78 resource_size_t avail; 79 80 u16 type; 81 u16 instance; 82 enum intel_region_id id; 83 char name[16]; 84 bool private; /* not for userspace */ 85 86 struct { 87 struct mutex lock; /* Protects access to objects */ 88 struct list_head list; 89 } objects; 90 91 bool is_range_manager; 92 93 void *region_private; 94 }; 95 96 struct intel_memory_region * 97 intel_memory_region_lookup(struct drm_i915_private *i915, 98 u16 class, u16 instance); 99 100 struct intel_memory_region * 101 intel_memory_region_create(struct drm_i915_private *i915, 102 resource_size_t start, 103 resource_size_t size, 104 resource_size_t min_page_size, 105 resource_size_t io_start, 106 resource_size_t io_size, 107 u16 type, 108 u16 instance, 109 const struct intel_memory_region_ops *ops); 110 111 void intel_memory_region_destroy(struct intel_memory_region *mem); 112 113 int intel_memory_regions_hw_probe(struct drm_i915_private *i915); 114 void intel_memory_regions_driver_release(struct drm_i915_private *i915); 115 struct intel_memory_region * 116 intel_memory_region_by_type(struct drm_i915_private *i915, 117 enum intel_memory_type mem_type); 118 119 __printf(2, 3) void 120 intel_memory_region_set_name(struct intel_memory_region *mem, 121 const char *fmt, ...); 122 123 int intel_memory_region_reserve(struct intel_memory_region *mem, 124 resource_size_t offset, 125 resource_size_t size); 126 127 void intel_memory_region_debug(struct intel_memory_region *mr, 128 struct drm_printer *printer); 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