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
|
/* 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)
/**
* 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;
unsigned int type;
unsigned int instance;
unsigned int id;
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);
#endif
|
