1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2019 Intel Corporation
*/
#ifndef __INTEL_MEMORY_REGION_H__
#define __INTEL_MEMORY_REGION_H__
#include <linux/kref.h>
#include <linux/ioport.h>
#include <linux/mutex.h>
#include <linux/io-mapping.h>
#include <drm/drm_mm.h>
#include "i915_buddy.h"
struct drm_i915_private;
struct drm_i915_gem_object;
struct intel_memory_region;
struct sg_table;
/**
* Base memory type
*/
enum intel_memory_type {
INTEL_MEMORY_SYSTEM = 0,
INTEL_MEMORY_LOCAL,
INTEL_MEMORY_STOLEN,
};
enum intel_region_id {
INTEL_REGION_SMEM = 0,
INTEL_REGION_LMEM,
INTEL_REGION_STOLEN,
INTEL_REGION_UNKNOWN, /* Should be last */
};
#define REGION_SMEM BIT(INTEL_REGION_SMEM)
#define REGION_LMEM BIT(INTEL_REGION_LMEM)
#define REGION_STOLEN BIT(INTEL_REGION_STOLEN)
#define INTEL_MEMORY_TYPE_SHIFT 16
#define MEMORY_TYPE_FROM_REGION(r) (ilog2((r) >> INTEL_MEMORY_TYPE_SHIFT))
#define MEMORY_INSTANCE_FROM_REGION(r) (ilog2((r) & 0xffff))
#define I915_ALLOC_MIN_PAGE_SIZE BIT(0)
#define I915_ALLOC_CONTIGUOUS BIT(1)
#define for_each_memory_region(mr, i915, id) \
for (id = 0; id < ARRAY_SIZE((i915)->mm.regions); id++) \
for_each_if((mr) = (i915)->mm.regions[id])
/**
* Memory regions encoded as type | instance
*/
extern const u32 intel_region_map[];
struct intel_memory_region_ops {
unsigned int flags;
int (*init)(struct intel_memory_region *mem);
void (*release)(struct intel_memory_region *mem);
struct drm_i915_gem_object *
(*create_object)(struct intel_memory_region *mem,
resource_size_t size,
unsigned int flags);
};
struct intel_memory_region {
struct drm_i915_private *i915;
const struct intel_memory_region_ops *ops;
struct io_mapping iomap;
struct resource region;
/* For fake LMEM */
struct drm_mm_node fake_mappable;
struct i915_buddy_mm mm;
struct mutex mm_lock;
struct kref kref;
resource_size_t io_start;
resource_size_t min_page_size;
resource_size_t total;
resource_size_t avail;
unsigned int type;
unsigned int instance;
unsigned int id;
char name[8];
dma_addr_t remap_addr;
struct {
struct mutex lock; /* Protects access to objects */
struct list_head list;
struct list_head purgeable;
} objects;
};
int intel_memory_region_init_buddy(struct intel_memory_region *mem);
void intel_memory_region_release_buddy(struct intel_memory_region *mem);
int __intel_memory_region_get_pages_buddy(struct intel_memory_region *mem,
resource_size_t size,
unsigned int flags,
struct list_head *blocks);
struct i915_buddy_block *
__intel_memory_region_get_block_buddy(struct intel_memory_region *mem,
resource_size_t size,
unsigned int flags);
void __intel_memory_region_put_pages_buddy(struct intel_memory_region *mem,
struct list_head *blocks);
void __intel_memory_region_put_block_buddy(struct i915_buddy_block *block);
struct intel_memory_region *
intel_memory_region_create(struct drm_i915_private *i915,
resource_size_t start,
resource_size_t size,
resource_size_t min_page_size,
resource_size_t io_start,
const struct intel_memory_region_ops *ops);
struct intel_memory_region *
intel_memory_region_get(struct intel_memory_region *mem);
void intel_memory_region_put(struct intel_memory_region *mem);
int intel_memory_regions_hw_probe(struct drm_i915_private *i915);
void intel_memory_regions_driver_release(struct drm_i915_private *i915);
struct intel_memory_region *
intel_memory_region_by_type(struct drm_i915_private *i915,
enum intel_memory_type mem_type);
__printf(2, 3) void
intel_memory_region_set_name(struct intel_memory_region *mem,
const char *fmt, ...);
#endif
|
