aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/staging/gma500/psb_ttm_fence_user.h
blob: fc13f89c6e12f0807743fd6bebdfe6334f73e737 (plain)
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
/**************************************************************************
 *
 * Copyright 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX., USA
 * All Rights Reserved.
 * Copyright (c) 2009 VMware, Inc., Palo Alto, CA., USA
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope 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 St - Fifth Floor, Boston, MA 02110-1301 USA.
 *
 **************************************************************************/
/*
 * Authors
 * Thomas Hellström <thomas-at-tungstengraphics-dot-com>
 */

#ifndef TTM_FENCE_USER_H
#define TTM_FENCE_USER_H

#if !defined(__KERNEL__) && !defined(_KERNEL)
#include <stdint.h>
#endif

#define TTM_FENCE_MAJOR 0
#define TTM_FENCE_MINOR 1
#define TTM_FENCE_PL    0
#define TTM_FENCE_DATE  "080819"

/**
 * struct ttm_fence_signaled_req
 *
 * @handle: Handle to the fence object. Input.
 *
 * @fence_type: Fence types we want to flush. Input.
 *
 * @flush: Boolean. Flush the indicated fence_types. Input.
 *
 * Argument to the TTM_FENCE_SIGNALED ioctl.
 */

struct ttm_fence_signaled_req {
	uint32_t handle;
	uint32_t fence_type;
	int32_t flush;
	uint32_t pad64;
};

/**
 * struct ttm_fence_rep
 *
 * @signaled_types: Fence type that has signaled.
 *
 * @fence_error: Command execution error.
 * Hardware errors that are consequences of the execution
 * of the command stream preceding the fence are reported
 * here.
 *
 * Output argument to the TTM_FENCE_SIGNALED and
 * TTM_FENCE_FINISH ioctls.
 */

struct ttm_fence_rep {
	uint32_t signaled_types;
	uint32_t fence_error;
};

union ttm_fence_signaled_arg {
	struct ttm_fence_signaled_req req;
	struct ttm_fence_rep rep;
};

/*
 * Waiting mode flags for the TTM_FENCE_FINISH ioctl.
 *
 * TTM_FENCE_FINISH_MODE_LAZY: Allow for sleeps during polling
 * wait.
 *
 * TTM_FENCE_FINISH_MODE_NO_BLOCK: Don't block waiting for GPU,
 * but return -EBUSY if the buffer is busy.
 */

#define TTM_FENCE_FINISH_MODE_LAZY     (1 << 0)
#define TTM_FENCE_FINISH_MODE_NO_BLOCK (1 << 1)

/**
 * struct ttm_fence_finish_req
 *
 * @handle: Handle to the fence object. Input.
 *
 * @fence_type: Fence types we want to finish.
 *
 * @mode: Wait mode.
 *
 * Input to the TTM_FENCE_FINISH ioctl.
 */

struct ttm_fence_finish_req {
	uint32_t handle;
	uint32_t fence_type;
	uint32_t mode;
	uint32_t pad64;
};

union ttm_fence_finish_arg {
	struct ttm_fence_finish_req req;
	struct ttm_fence_rep rep;
};

/**
 * struct ttm_fence_unref_arg
 *
 * @handle: Handle to the fence object.
 *
 * Argument to the TTM_FENCE_UNREF ioctl.
 */

struct ttm_fence_unref_arg {
	uint32_t handle;
	uint32_t pad64;
};

/*
 * Ioctl offsets frome extenstion start.
 */

#define TTM_FENCE_SIGNALED 0x01
#define TTM_FENCE_FINISH   0x02
#define TTM_FENCE_UNREF    0x03

#endif