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/kref.h> 10 #include <linux/ioport.h> 11 #include <linux/mutex.h> 12 #include <linux/io-mapping.h> 13 #include <drm/drm_mm.h> 14 #include <drm/i915_drm.h> 15 16 struct drm_i915_private; 17 struct drm_i915_gem_object; 18 struct drm_printer; 19 struct intel_memory_region; 20 struct sg_table; 21 struct ttm_resource; 22 23 enum intel_memory_type { 24 INTEL_MEMORY_SYSTEM = I915_MEMORY_CLASS_SYSTEM, 25 INTEL_MEMORY_LOCAL = I915_MEMORY_CLASS_DEVICE, 26 INTEL_MEMORY_STOLEN_SYSTEM, 27 INTEL_MEMORY_STOLEN_LOCAL, 28 INTEL_MEMORY_MOCK, 29 }; 30 31 enum intel_region_id { 32 INTEL_REGION_SMEM = 0, 33 INTEL_REGION_LMEM, 34 INTEL_REGION_STOLEN_SMEM, 35 INTEL_REGION_STOLEN_LMEM, 36 INTEL_REGION_UNKNOWN, /* Should be last */ 37 }; 38 39 #define REGION_SMEM BIT(INTEL_REGION_SMEM) 40 #define REGION_LMEM BIT(INTEL_REGION_LMEM) 41 #define REGION_STOLEN_SMEM BIT(INTEL_REGION_STOLEN_SMEM) 42 #define REGION_STOLEN_LMEM BIT(INTEL_REGION_STOLEN_LMEM) 43 44 #define I915_ALLOC_CONTIGUOUS BIT(0) 45 46 #define for_each_memory_region(mr, i915, id) \ 47 for (id = 0; id < ARRAY_SIZE((i915)->mm.regions); id++) \ 48 for_each_if((mr) = (i915)->mm.regions[id]) 49 50 struct intel_memory_region_ops { 51 unsigned int flags; 52 53 int (*init)(struct intel_memory_region *mem); 54 void (*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 size, 59 resource_size_t page_size, 60 unsigned int flags); 61 }; 62 63 struct intel_memory_region { 64 struct drm_i915_private *i915; 65 66 const struct intel_memory_region_ops *ops; 67 68 struct io_mapping iomap; 69 struct resource region; 70 71 /* For fake LMEM */ 72 struct drm_mm_node fake_mappable; 73 74 struct kref kref; 75 76 resource_size_t io_start; 77 resource_size_t min_page_size; 78 resource_size_t total; 79 resource_size_t avail; 80 81 u16 type; 82 u16 instance; 83 enum intel_region_id id; 84 char name[16]; 85 bool private; /* not for userspace */ 86 87 dma_addr_t remap_addr; 88 89 struct { 90 struct mutex 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 u16 type, 110 u16 instance, 111 const struct intel_memory_region_ops *ops); 112 113 struct intel_memory_region * 114 intel_memory_region_get(struct intel_memory_region *mem); 115 void intel_memory_region_put(struct intel_memory_region *mem); 116 117 int intel_memory_regions_hw_probe(struct drm_i915_private *i915); 118 void intel_memory_regions_driver_release(struct drm_i915_private *i915); 119 struct intel_memory_region * 120 intel_memory_region_by_type(struct drm_i915_private *i915, 121 enum intel_memory_type mem_type); 122 123 __printf(2, 3) void 124 intel_memory_region_set_name(struct intel_memory_region *mem, 125 const char *fmt, ...); 126 127 int intel_memory_region_reserve(struct intel_memory_region *mem, 128 resource_size_t offset, 129 resource_size_t size); 130 131 void intel_memory_region_debug(struct intel_memory_region *mr, 132 struct drm_printer *printer); 133 134 struct intel_memory_region * 135 i915_gem_ttm_system_setup(struct drm_i915_private *i915, 136 u16 type, u16 instance); 137 struct intel_memory_region * 138 i915_gem_shmem_setup(struct drm_i915_private *i915, 139 u16 type, u16 instance); 140 141 #endif 142