aboutsummaryrefslogtreecommitdiffstats
blob: cfaec82728c4ead1c9f8ceb05e3d7570f3c6a9d7 (plain) (blame)
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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */

/*
 * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * Authors:
 *    Rob Clark <robclark@freedesktop.org>
 */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include "msm_priv.h"

static int bo_allocate(struct msm_bo *msm_bo)
{
	struct fd_bo *bo = &msm_bo->base;
	if (!msm_bo->offset) {
		struct drm_msm_gem_info req = {
				.handle = bo->handle,
		};
		int ret;

		/* if the buffer is already backed by pages then this
		 * doesn't actually do anything (other than giving us
		 * the offset)
		 */
		ret = drmCommandWriteRead(bo->dev->fd, DRM_MSM_GEM_INFO,
				&req, sizeof(req));
		if (ret) {
			ERROR_MSG("alloc failed: %s", strerror(errno));
			return ret;
		}

		msm_bo->offset = req.offset;
	}

	return 0;
}

static int msm_bo_offset(struct fd_bo *bo, uint64_t *offset)
{
	struct msm_bo *msm_bo = to_msm_bo(bo);
	int ret = bo_allocate(msm_bo);
	if (ret)
		return ret;
	*offset = msm_bo->offset;
	return 0;
}

static int msm_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op)
{
	struct drm_msm_gem_cpu_prep req = {
			.handle = bo->handle,
			.op = op,
	};

	get_abs_timeout(&req.timeout, 5000000000);

	return drmCommandWrite(bo->dev->fd, DRM_MSM_GEM_CPU_PREP, &req, sizeof(req));
}

static void msm_bo_cpu_fini(struct fd_bo *bo)
{
	struct drm_msm_gem_cpu_fini req = {
			.handle = bo->handle,
	};

	drmCommandWrite(bo->dev->fd, DRM_MSM_GEM_CPU_FINI, &req, sizeof(req));
}

static int msm_bo_madvise(struct fd_bo *bo, int willneed)
{
	struct drm_msm_gem_madvise req = {
			.handle = bo->handle,
			.madv = willneed ? MSM_MADV_WILLNEED : MSM_MADV_DONTNEED,
	};
	int ret;

	/* older kernels do not support this: */
	if (bo->dev->version < 1)
		return willneed;

	ret = drmCommandWriteRead(bo->dev->fd, DRM_MSM_GEM_MADVISE, &req, sizeof(req));
	if (ret)
		return ret;

	return req.retained;
}

static void msm_bo_destroy(struct fd_bo *bo)
{
	struct msm_bo *msm_bo = to_msm_bo(bo);
	free(msm_bo);

}

static const struct fd_bo_funcs funcs = {
		.offset = msm_bo_offset,
		.cpu_prep = msm_bo_cpu_prep,
		.cpu_fini = msm_bo_cpu_fini,
		.madvise = msm_bo_madvise,
		.destroy = msm_bo_destroy,
};

/* allocate a buffer handle: */
drm_private int msm_bo_new_handle(struct fd_device *dev,
		uint32_t size, uint32_t flags, uint32_t *handle)
{
	struct drm_msm_gem_new req = {
			.size = size,
			.flags = MSM_BO_WC,  // TODO figure out proper flags..
	};
	int ret;

	ret = drmCommandWriteRead(dev->fd, DRM_MSM_GEM_NEW,
			&req, sizeof(req));
	if (ret)
		return ret;

	*handle = req.handle;

	return 0;
}

/* allocate a new buffer object */
drm_private struct fd_bo * msm_bo_from_handle(struct fd_device *dev,
		uint32_t size, uint32_t handle)
{
	struct msm_bo *msm_bo;
	struct fd_bo *bo;

	msm_bo = calloc(1, sizeof(*msm_bo));
	if (!msm_bo)
		return NULL;

	bo = &msm_bo->base;
	bo->funcs = &funcs;

	return bo;
}