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
|
/* drivers/char/s3c_mem.h
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* Header file for s3c mem
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#define DEBUG_S3C_MEM
#undef DEBUG_S3C_MEM
#ifdef DEBUG_S3C_MEM
#define DEBUG(fmt, args...) printk(fmt, ##args)
#else
#define DEBUG(fmt, args...) do {} while (0)
#endif
#ifdef CONFIG_S3C_DMA_MEM
#include "s3c_dma_mem.h"
#endif
#define MEM_IOCTL_MAGIC 'M'
#define S3C_MEM_ALLOC _IOWR(MEM_IOCTL_MAGIC, 310, struct s3c_mem_alloc)
#define S3C_MEM_FREE _IOWR(MEM_IOCTL_MAGIC, 311, struct s3c_mem_alloc)
#define S3C_MEM_SHARE_ALLOC _IOWR(MEM_IOCTL_MAGIC, 314, struct s3c_mem_alloc)
#define S3C_MEM_SHARE_FREE _IOWR(MEM_IOCTL_MAGIC, 315, struct s3c_mem_alloc)
#define S3C_MEM_CACHEABLE_ALLOC _IOWR(MEM_IOCTL_MAGIC, 316, struct s3c_mem_alloc)
#define S3C_MEM_CACHEABLE_SHARE_ALLOC _IOWR(MEM_IOCTL_MAGIC, 317, struct s3c_mem_alloc)
#ifdef CONFIG_S3C_DMA_MEM
#define S3C_MEM_DMA_COPY _IOWR(MEM_IOCTL_MAGIC, 318, struct s3c_mem_dma_param)
#endif
#define S3C_MEM_GET_PADDR _IOWR(MEM_IOCTL_MAGIC, 320, struct s3c_mem_alloc)
#ifdef CONFIG_VIDEO_SAMSUNG_USE_DMA_MEM
#define S3C_MEM_CMA_ALLOC \
_IOWR(MEM_IOCTL_MAGIC, 321, struct s3c_mem_alloc)
#define S3C_MEM_CMA_FREE \
_IOWR(MEM_IOCTL_MAGIC, 322, struct s3c_mem_alloc)
#endif
#define MEM_ALLOC 1
#define MEM_ALLOC_SHARE 2
#define MEM_ALLOC_CACHEABLE 3
#define MEM_ALLOC_CACHEABLE_SHARE 4
#ifdef CONFIG_VIDEO_SAMSUNG_USE_DMA_MEM
#define MEM_CMA_ALLOC 5
#endif
#define S3C_MEM_MINOR 13
#undef USE_DMA_ALLOC
static DEFINE_MUTEX(mem_alloc_lock);
static DEFINE_MUTEX(mem_free_lock);
static DEFINE_MUTEX(mem_share_alloc_lock);
static DEFINE_MUTEX(mem_share_free_lock);
static DEFINE_MUTEX(mem_cacheable_alloc_lock);
static DEFINE_MUTEX(mem_cacheable_share_alloc_lock);
#ifdef CONFIG_VIDEO_SAMSUNG_USE_DMA_MEM
static DEFINE_MUTEX(mem_open_lock);
static DEFINE_MUTEX(mem_release_lock);
#endif
struct s3c_mem_alloc {
int size;
unsigned int vir_addr;
unsigned int phy_addr;
#ifdef USE_DMA_ALLOC
unsigned int kvir_addr;
#endif
};
#ifdef CONFIG_S3C_DMA_MEM
#define s3c_dma_init() s3c_dma_mem_init()
#else
#define s3c_dma_init() do { } while (0)
#endif
#ifdef CONFIG_VIDEO_SAMSUNG_USE_DMA_MEM
#define S3C_MEM_CMA_MAX_CTX_BUF 3
extern int s3c_mem_open(struct inode *inode, struct file *filp);
extern int s3c_mem_release(struct inode *inode, struct file *filp);
struct s3c_dev_info {
struct s3c_mem_alloc s_cur_mem_info[S3C_MEM_CMA_MAX_CTX_BUF];
int s3c_mem_ctx_buf_num;
};
#endif
|
