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 #define drm_i915_private inteldrm_softc 16 17 struct drm_i915_private; 18 struct drm_i915_gem_object; 19 struct drm_printer; 20 struct intel_memory_region; 21 struct sg_table; 22 struct ttm_resource; 23 24 enum intel_memory_type { 25 INTEL_MEMORY_SYSTEM = I915_MEMORY_CLASS_SYSTEM, 26 INTEL_MEMORY_LOCAL = I915_MEMORY_CLASS_DEVICE, 27 INTEL_MEMORY_STOLEN_SYSTEM, 28 INTEL_MEMORY_STOLEN_LOCAL, 29 INTEL_MEMORY_MOCK, 30 }; 31 32 enum intel_region_id { 33 INTEL_REGION_SMEM = 0, 34 INTEL_REGION_LMEM_0, 35 INTEL_REGION_LMEM_1, 36 INTEL_REGION_LMEM_2, 37 INTEL_REGION_LMEM_3, 38 INTEL_REGION_STOLEN_SMEM, 39 INTEL_REGION_STOLEN_LMEM, 40 INTEL_REGION_UNKNOWN, /* Should be last */ 41 }; 42 43 #define REGION_SMEM BIT(INTEL_REGION_SMEM) 44 #define REGION_LMEM BIT(INTEL_REGION_LMEM_0) 45 #define REGION_STOLEN_SMEM BIT(INTEL_REGION_STOLEN_SMEM) 46 #define REGION_STOLEN_LMEM BIT(INTEL_REGION_STOLEN_LMEM) 47 48 #define I915_ALLOC_CONTIGUOUS BIT(0) 49 50 #define for_each_memory_region(mr, i915, id) \ 51 for (id = 0; id < ARRAY_SIZE((i915)->mm.regions); id++) \ 52 for_each_if((mr) = (i915)->mm.regions[id]) 53 54 struct intel_memory_region_ops { 55 unsigned int flags; 56 57 int (*init)(struct intel_memory_region *mem); 58 int (*release)(struct intel_memory_region *mem); 59 60 int (*init_object)(struct intel_memory_region *mem, 61 struct drm_i915_gem_object *obj, 62 resource_size_t offset, 63 resource_size_t size, 64 resource_size_t page_size, 65 unsigned int flags); 66 }; 67 68 struct intel_memory_region { 69 struct drm_i915_private *i915; 70 71 const struct intel_memory_region_ops *ops; 72 73 #ifdef notyet 74 struct io_mapping iomap; 75 #endif 76 struct resource region; 77 78 resource_size_t io_start; 79 resource_size_t io_size; 80 resource_size_t min_page_size; 81 resource_size_t total; 82 83 u16 type; 84 u16 instance; 85 enum intel_region_id id; 86 char name[16]; 87 bool private; /* not for userspace */ 88 89 struct { 90 struct rwlock lock; /* Protects access to objects */ 91 struct list_head list; 92 } objects; 93 94 bool is_range_manager; 95 96 void *region_private; 97 }; 98 99 struct intel_memory_region * 100 intel_memory_region_lookup(struct drm_i915_private *i915, 101 u16 class, u16 instance); 102 103 struct intel_memory_region * 104 intel_memory_region_create(struct drm_i915_private *i915, 105 resource_size_t start, 106 resource_size_t size, 107 resource_size_t min_page_size, 108 resource_size_t io_start, 109 resource_size_t io_size, 110 u16 type, 111 u16 instance, 112 const struct intel_memory_region_ops *ops); 113 114 void intel_memory_region_destroy(struct intel_memory_region *mem); 115 116 int intel_memory_regions_hw_probe(struct drm_i915_private *i915); 117 void intel_memory_regions_driver_release(struct drm_i915_private *i915); 118 struct intel_memory_region * 119 intel_memory_region_by_type(struct drm_i915_private *i915, 120 enum intel_memory_type mem_type); 121 122 __printf(2, 3) void 123 intel_memory_region_set_name(struct intel_memory_region *mem, 124 const char *fmt, ...); 125 126 int intel_memory_region_reserve(struct intel_memory_region *mem, 127 resource_size_t offset, 128 resource_size_t size); 129 130 void intel_memory_region_debug(struct intel_memory_region *mr, 131 struct drm_printer *printer); 132 133 void intel_memory_region_avail(struct intel_memory_region *mr, 134 u64 *avail, u64 *visible_avail); 135 136 struct intel_memory_region * 137 i915_gem_ttm_system_setup(struct drm_i915_private *i915, 138 u16 type, u16 instance); 139 struct intel_memory_region * 140 i915_gem_shmem_setup(struct drm_i915_private *i915, 141 u16 type, u16 instance); 142 143 #endif 144