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 <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 /* For fake LMEM */ 71 struct drm_mm_node fake_mappable; 72 73 resource_size_t io_start; 74 resource_size_t min_page_size; 75 resource_size_t total; 76 resource_size_t avail; 77 78 u16 type; 79 u16 instance; 80 enum intel_region_id id; 81 char name[16]; 82 bool private; /* not for userspace */ 83 84 dma_addr_t remap_addr; 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 u16 type, 107 u16 instance, 108 const struct intel_memory_region_ops *ops); 109 110 void intel_memory_region_destroy(struct intel_memory_region *mem); 111 112 int intel_memory_regions_hw_probe(struct drm_i915_private *i915); 113 void intel_memory_regions_driver_release(struct drm_i915_private *i915); 114 struct intel_memory_region * 115 intel_memory_region_by_type(struct drm_i915_private *i915, 116 enum intel_memory_type mem_type); 117 118 __printf(2, 3) void 119 intel_memory_region_set_name(struct intel_memory_region *mem, 120 const char *fmt, ...); 121 122 int intel_memory_region_reserve(struct intel_memory_region *mem, 123 resource_size_t offset, 124 resource_size_t size); 125 126 void intel_memory_region_debug(struct intel_memory_region *mr, 127 struct drm_printer *printer); 128 129 struct intel_memory_region * 130 i915_gem_ttm_system_setup(struct drm_i915_private *i915, 131 u16 type, u16 instance); 132 struct intel_memory_region * 133 i915_gem_shmem_setup(struct drm_i915_private *i915, 134 u16 type, u16 instance); 135 136 #endif 137