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, 33 INTEL_REGION_STOLEN_SMEM, 34 INTEL_REGION_STOLEN_LMEM, 35 INTEL_REGION_UNKNOWN, /* Should be last */ 36 }; 37 38 #define REGION_SMEM BIT(INTEL_REGION_SMEM) 39 #define REGION_LMEM BIT(INTEL_REGION_LMEM) 40 #define REGION_STOLEN_SMEM BIT(INTEL_REGION_STOLEN_SMEM) 41 #define REGION_STOLEN_LMEM BIT(INTEL_REGION_STOLEN_LMEM) 42 43 #define I915_ALLOC_CONTIGUOUS BIT(0) 44 45 #define for_each_memory_region(mr, i915, id) \ 46 for (id = 0; id < ARRAY_SIZE((i915)->mm.regions); id++) \ 47 for_each_if((mr) = (i915)->mm.regions[id]) 48 49 struct intel_memory_region_ops { 50 unsigned int flags; 51 52 int (*init)(struct intel_memory_region *mem); 53 int (*release)(struct intel_memory_region *mem); 54 55 int (*init_object)(struct intel_memory_region *mem, 56 struct drm_i915_gem_object *obj, 57 resource_size_t size, 58 resource_size_t page_size, 59 unsigned int flags); 60 }; 61 62 struct intel_memory_region { 63 struct drm_i915_private *i915; 64 65 const struct intel_memory_region_ops *ops; 66 67 struct io_mapping iomap; 68 struct resource region; 69 70 resource_size_t io_start; 71 resource_size_t io_size; 72 resource_size_t min_page_size; 73 resource_size_t total; 74 resource_size_t avail; 75 76 u16 type; 77 u16 instance; 78 enum intel_region_id id; 79 char name[16]; 80 bool private; /* not for userspace */ 81 82 struct { 83 struct mutex lock; /* Protects access to objects */ 84 struct list_head list; 85 } objects; 86 87 bool is_range_manager; 88 89 void *region_private; 90 }; 91 92 struct intel_memory_region * 93 intel_memory_region_lookup(struct drm_i915_private *i915, 94 u16 class, u16 instance); 95 96 struct intel_memory_region * 97 intel_memory_region_create(struct drm_i915_private *i915, 98 resource_size_t start, 99 resource_size_t size, 100 resource_size_t min_page_size, 101 resource_size_t io_start, 102 resource_size_t io_size, 103 u16 type, 104 u16 instance, 105 const struct intel_memory_region_ops *ops); 106 107 void intel_memory_region_destroy(struct intel_memory_region *mem); 108 109 int intel_memory_regions_hw_probe(struct drm_i915_private *i915); 110 void intel_memory_regions_driver_release(struct drm_i915_private *i915); 111 struct intel_memory_region * 112 intel_memory_region_by_type(struct drm_i915_private *i915, 113 enum intel_memory_type mem_type); 114 115 __printf(2, 3) void 116 intel_memory_region_set_name(struct intel_memory_region *mem, 117 const char *fmt, ...); 118 119 int intel_memory_region_reserve(struct intel_memory_region *mem, 120 resource_size_t offset, 121 resource_size_t size); 122 123 void intel_memory_region_debug(struct intel_memory_region *mr, 124 struct drm_printer *printer); 125 126 struct intel_memory_region * 127 i915_gem_ttm_system_setup(struct drm_i915_private *i915, 128 u16 type, u16 instance); 129 struct intel_memory_region * 130 i915_gem_shmem_setup(struct drm_i915_private *i915, 131 u16 type, u16 instance); 132 133 #endif 134