1 /* SPDX-License-Identifier: MIT */
3 * Copyright © 2019 Intel Corporation
6 #ifndef __INTEL_MEMORY_REGION_H__
7 #define __INTEL_MEMORY_REGION_H__
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>
15 struct drm_i915_private;
16 struct drm_i915_gem_object;
18 struct intel_memory_region;
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,
30 enum intel_region_id {
31 INTEL_REGION_SMEM = 0,
36 INTEL_REGION_STOLEN_SMEM,
37 INTEL_REGION_STOLEN_LMEM,
38 INTEL_REGION_UNKNOWN, /* Should be last */
41 #define REGION_SMEM BIT(INTEL_REGION_SMEM)
42 #define REGION_LMEM BIT(INTEL_REGION_LMEM_0)
43 #define REGION_STOLEN_SMEM BIT(INTEL_REGION_STOLEN_SMEM)
44 #define REGION_STOLEN_LMEM BIT(INTEL_REGION_STOLEN_LMEM)
46 #define I915_ALLOC_CONTIGUOUS BIT(0)
48 #define for_each_memory_region(mr, i915, id) \
49 for (id = 0; id < ARRAY_SIZE((i915)->mm.regions); id++) \
50 for_each_if((mr) = (i915)->mm.regions[id])
52 struct intel_memory_region_ops {
55 int (*init)(struct intel_memory_region *mem);
56 int (*release)(struct intel_memory_region *mem);
58 int (*init_object)(struct intel_memory_region *mem,
59 struct drm_i915_gem_object *obj,
60 resource_size_t offset,
62 resource_size_t page_size,
66 struct intel_memory_region {
67 struct drm_i915_private *i915;
69 const struct intel_memory_region_ops *ops;
71 struct io_mapping iomap;
72 struct resource region;
74 resource_size_t io_start;
75 resource_size_t io_size;
76 resource_size_t min_page_size;
77 resource_size_t total;
81 enum intel_region_id id;
83 bool private; /* not for userspace */
86 struct mutex lock; /* Protects access to objects */
87 struct list_head list;
90 bool is_range_manager;
95 struct intel_memory_region *
96 intel_memory_region_lookup(struct drm_i915_private *i915,
97 u16 class, u16 instance);
99 struct intel_memory_region *
100 intel_memory_region_create(struct drm_i915_private *i915,
101 resource_size_t start,
102 resource_size_t size,
103 resource_size_t min_page_size,
104 resource_size_t io_start,
105 resource_size_t io_size,
108 const struct intel_memory_region_ops *ops);
110 void intel_memory_region_destroy(struct intel_memory_region *mem);
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);
119 intel_memory_region_set_name(struct intel_memory_region *mem,
120 const char *fmt, ...);
122 int intel_memory_region_reserve(struct intel_memory_region *mem,
123 resource_size_t offset,
124 resource_size_t size);
126 void intel_memory_region_debug(struct intel_memory_region *mr,
127 struct drm_printer *printer);
129 void intel_memory_region_avail(struct intel_memory_region *mr,
130 u64 *avail, u64 *visible_avail);
132 struct intel_memory_region *
133 i915_gem_ttm_system_setup(struct drm_i915_private *i915,
134 u16 type, u16 instance);
135 struct intel_memory_region *
136 i915_gem_shmem_setup(struct drm_i915_private *i915,
137 u16 type, u16 instance);