1
2
3
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
16struct drm_i915_private;
17struct drm_i915_gem_object;
18struct intel_memory_region;
19struct sg_table;
20struct ttm_resource;
21
22enum 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
30enum 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,
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
49struct intel_memory_region_ops {
50 unsigned int flags;
51
52 int (*init)(struct intel_memory_region *mem);
53 void (*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
62struct 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
71 struct drm_mm_node fake_mappable;
72
73 struct kref kref;
74
75 resource_size_t io_start;
76 resource_size_t min_page_size;
77 resource_size_t total;
78 resource_size_t avail;
79
80 u16 type;
81 u16 instance;
82 enum intel_region_id id;
83 char name[16];
84 bool private;
85
86 dma_addr_t remap_addr;
87
88 struct {
89 struct mutex lock;
90 struct list_head list;
91 } objects;
92
93 bool is_range_manager;
94
95 void *region_private;
96};
97
98struct intel_memory_region *
99intel_memory_region_lookup(struct drm_i915_private *i915,
100 u16 class, u16 instance);
101
102struct intel_memory_region *
103intel_memory_region_create(struct drm_i915_private *i915,
104 resource_size_t start,
105 resource_size_t size,
106 resource_size_t min_page_size,
107 resource_size_t io_start,
108 u16 type,
109 u16 instance,
110 const struct intel_memory_region_ops *ops);
111
112struct intel_memory_region *
113intel_memory_region_get(struct intel_memory_region *mem);
114void intel_memory_region_put(struct intel_memory_region *mem);
115
116int intel_memory_regions_hw_probe(struct drm_i915_private *i915);
117void intel_memory_regions_driver_release(struct drm_i915_private *i915);
118struct intel_memory_region *
119intel_memory_region_by_type(struct drm_i915_private *i915,
120 enum intel_memory_type mem_type);
121
122__printf(2, 3) void
123intel_memory_region_set_name(struct intel_memory_region *mem,
124 const char *fmt, ...);
125
126int intel_memory_region_reserve(struct intel_memory_region *mem,
127 resource_size_t offset,
128 resource_size_t size);
129
130struct intel_memory_region *
131i915_gem_ttm_system_setup(struct drm_i915_private *i915,
132 u16 type, u16 instance);
133struct intel_memory_region *
134i915_gem_shmem_setup(struct drm_i915_private *i915,
135 u16 type, u16 instance);
136
137#endif
138