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