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
|
/* Copyright (c) 2016 The Linux Foundation. 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 version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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.
*/
#ifndef MSM_SNAPSHOT_H_
#define MSM_SNAPSHOT_H_
#include <linux/string.h>
#include <linux/seq_buf.h>
#include "msm_snapshot_api.h"
struct msm_snapshot {
void *ptr;
struct seq_buf buf;
phys_addr_t physaddr;
uint32_t index;
uint32_t remain;
unsigned long timestamp;
void *priv;
};
/* Write a uint32_t value to the next position in the snapshot buffer */
static inline void SNAPSHOT_WRITE_U32(struct msm_snapshot *snapshot,
uint32_t value)
{
seq_buf_putmem(&snapshot->buf, &value, sizeof(value));
}
/* Copy a block of memory to the next position in the snapshot buffer */
static inline void SNAPSHOT_MEMCPY(struct msm_snapshot *snapshot, void *src,
uint32_t size)
{
if (size)
seq_buf_putmem(&snapshot->buf, src, size);
}
static inline bool _snapshot_header(struct msm_snapshot *snapshot,
struct msm_snapshot_section_header *header,
u32 headsz, u32 datasz, u32 id)
{
u32 size = headsz + datasz;
if (seq_buf_buffer_left(&snapshot->buf) <= size)
return false;
/* Write the section header */
header->magic = SNAPSHOT_SECTION_MAGIC;
header->id = id;
header->size = headsz + datasz;
/* Write the section header */
seq_buf_putmem(&snapshot->buf, header, headsz);
/* The caller will fill in the data from here */
return true;
}
/* SNAPSHOT_HEADER
* _snapshot: pointer to struct msm_snapshot
* _header: Local variable containing the sub-section header
* _id: Section ID to write
* _dword: Size of the data section (in dword)
*/
#define SNAPSHOT_HEADER(_snapshot, _header, _id, _dwords) \
_snapshot_header((_snapshot), \
(struct msm_snapshot_section_header *) &(_header), \
sizeof(_header), (_dwords) << 2, (_id))
struct msm_gpu;
struct msm_snapshot *msm_snapshot_new(struct msm_gpu *gpu);
void msm_snapshot_destroy(struct msm_gpu *gpu, struct msm_snapshot *snapshot);
int msm_gpu_snapshot(struct msm_gpu *gpu, struct msm_snapshot *snapshot);
int msm_snapshot_write(struct msm_gpu *gpu, struct seq_file *m);
#endif
|
