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
144
|
/*
* include/linux/nvmap.h
*
* structure declarations for nvmem and nvmap user-space ioctls
*
* Copyright (c) 2009-2012, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <linux/ioctl.h>
#include <linux/file.h>
#include <linux/rbtree.h>
#if !defined(__KERNEL__)
#define __user
#endif
#ifndef _LINUX_NVMAP_H
#define _LINUX_NVMAP_H
#define NVMAP_HEAP_SYSMEM (1ul<<31)
#define NVMAP_HEAP_IOVMM (1ul<<30)
/* common carveout heaps */
#define NVMAP_HEAP_CARVEOUT_IRAM (1ul<<29)
#define NVMAP_HEAP_CARVEOUT_VPR (1ul<<28)
#define NVMAP_HEAP_CARVEOUT_GENERIC (1ul<<0)
#define NVMAP_HEAP_CARVEOUT_MASK (NVMAP_HEAP_IOVMM - 1)
/* allocation flags */
#define NVMAP_HANDLE_UNCACHEABLE (0x0ul << 0)
#define NVMAP_HANDLE_WRITE_COMBINE (0x1ul << 0)
#define NVMAP_HANDLE_INNER_CACHEABLE (0x2ul << 0)
#define NVMAP_HANDLE_CACHEABLE (0x3ul << 0)
#define NVMAP_HANDLE_CACHE_FLAG (0x3ul << 0)
#define NVMAP_HANDLE_SECURE (0x1ul << 2)
#define NVMAP_HANDLE_ZEROED_PAGES (0x1ul << 3)
#if defined(__KERNEL__)
#if defined(CONFIG_TEGRA_NVMAP)
struct nvmap_handle;
struct nvmap_client;
struct nvmap_device;
#define nvmap_ref_to_handle(_ref) (*(struct nvmap_handle **)(_ref))
/* Convert User space handle to Kernel. */
#define nvmap_convert_handle_u2k(h) (h)
/* handle_ref objects are client-local references to an nvmap_handle;
* they are distinct objects so that handles can be unpinned and
* unreferenced the correct number of times when a client abnormally
* terminates */
struct nvmap_handle_ref {
struct nvmap_handle *handle;
struct rb_node node;
atomic_t dupes; /* number of times to free on file close */
atomic_t pin; /* number of times to unpin on free */
};
#elif defined(CONFIG_ION_TEGRA)
/* For Ion Mem Manager support through nvmap_* API's. */
#include "../../../../../drivers/gpu/ion/ion_priv.h"
#define nvmap_client ion_client
#define nvmap_device ion_device
#define nvmap_handle ion_handle
#define nvmap_handle_ref ion_handle
#define nvmap_ref_to_handle(_ref) (struct ion_handle *)_ref
/* Convert User space handle to Kernel. */
#define nvmap_convert_handle_u2k(h) ({ \
if ((u32)h >= TASK_SIZE) { \
pr_err("Invalid user space handle."); \
BUG(); \
} \
(*((u32 *)h)); })
#endif /* CONFIG_ION_TEGRA */
#define nvmap_id_to_handle(_id) ((struct nvmap_handle *)(_id))
struct nvmap_client *nvmap_create_client(struct nvmap_device *dev,
const char *name);
struct nvmap_handle_ref *nvmap_alloc(struct nvmap_client *client, size_t size,
size_t align, unsigned int flags,
unsigned int heap_mask);
void nvmap_free(struct nvmap_client *client, struct nvmap_handle_ref *r);
void *nvmap_mmap(struct nvmap_handle_ref *r);
void nvmap_munmap(struct nvmap_handle_ref *r, void *addr);
struct nvmap_client *nvmap_client_get_file(int fd);
struct nvmap_client *nvmap_client_get(struct nvmap_client *client);
void nvmap_client_put(struct nvmap_client *c);
phys_addr_t nvmap_pin(struct nvmap_client *c, struct nvmap_handle_ref *r);
phys_addr_t nvmap_handle_address(struct nvmap_client *c, unsigned long id);
void nvmap_unpin(struct nvmap_client *client, struct nvmap_handle_ref *r);
void nvmap_unpin_handles(struct nvmap_client *client,
struct nvmap_handle **h, int nr);
struct nvmap_handle_ref *nvmap_duplicate_handle_id(struct nvmap_client *client,
unsigned long id);
struct nvmap_platform_carveout {
const char *name;
unsigned int usage_mask;
phys_addr_t base;
size_t size;
size_t buddy_size;
};
struct nvmap_platform_data {
const struct nvmap_platform_carveout *carveouts;
unsigned int nr_carveouts;
};
extern struct nvmap_device *nvmap_dev;
#endif /* __KERNEL__ */
#endif /* _LINUX_NVMAP_H */
|
