msm_pipe.c revision 3f012e29 
1/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
2
3/*
4 * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
15 * Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Authors:
26 *    Rob Clark <robclark@freedesktop.org>
27 */
28
29#ifdef HAVE_CONFIG_H
30# include <config.h>
31#endif
32
33#include "msm_priv.h"
34
35static int query_param(struct fd_pipe *pipe, uint32_t param,
36		uint64_t *value)
37{
38	struct msm_pipe *msm_pipe = to_msm_pipe(pipe);
39	struct drm_msm_param req = {
40			.pipe = msm_pipe->pipe,
41			.param = param,
42	};
43	int ret;
44
45	ret = drmCommandWriteRead(pipe->dev->fd, DRM_MSM_GET_PARAM,
46			&req, sizeof(req));
47	if (ret)
48		return ret;
49
50	*value = req.value;
51
52	return 0;
53}
54
55static int msm_pipe_get_param(struct fd_pipe *pipe,
56		enum fd_param_id param, uint64_t *value)
57{
58	struct msm_pipe *msm_pipe = to_msm_pipe(pipe);
59	switch(param) {
60	case FD_DEVICE_ID: // XXX probably get rid of this..
61	case FD_GPU_ID:
62		*value = msm_pipe->gpu_id;
63		return 0;
64	case FD_GMEM_SIZE:
65		*value = msm_pipe->gmem;
66		return 0;
67	case FD_CHIP_ID:
68		*value = msm_pipe->chip_id;
69		return 0;
70	case FD_MAX_FREQ:
71		return query_param(pipe, MSM_PARAM_MAX_FREQ, value);
72	case FD_TIMESTAMP:
73		return query_param(pipe, MSM_PARAM_TIMESTAMP, value);
74	default:
75		ERROR_MSG("invalid param id: %d", param);
76		return -1;
77	}
78}
79
80static int msm_pipe_wait(struct fd_pipe *pipe, uint32_t timestamp,
81		uint64_t timeout)
82{
83	struct fd_device *dev = pipe->dev;
84	struct drm_msm_wait_fence req = {
85			.fence = timestamp,
86	};
87	int ret;
88
89	get_abs_timeout(&req.timeout, timeout);
90
91	ret = drmCommandWrite(dev->fd, DRM_MSM_WAIT_FENCE, &req, sizeof(req));
92	if (ret) {
93		ERROR_MSG("wait-fence failed! %d (%s)", ret, strerror(errno));
94		return ret;
95	}
96
97	return 0;
98}
99
100static void msm_pipe_destroy(struct fd_pipe *pipe)
101{
102	struct msm_pipe *msm_pipe = to_msm_pipe(pipe);
103	free(msm_pipe);
104}
105
106static const struct fd_pipe_funcs funcs = {
107		.ringbuffer_new = msm_ringbuffer_new,
108		.get_param = msm_pipe_get_param,
109		.wait = msm_pipe_wait,
110		.destroy = msm_pipe_destroy,
111};
112
113static uint64_t get_param(struct fd_pipe *pipe, uint32_t param)
114{
115	uint64_t value;
116	int ret = query_param(pipe, param, &value);
117	if (ret) {
118		ERROR_MSG("get-param failed! %d (%s)", ret, strerror(errno));
119		return 0;
120	}
121	return value;
122}
123
124drm_private struct fd_pipe * msm_pipe_new(struct fd_device *dev,
125		enum fd_pipe_id id)
126{
127	static const uint32_t pipe_id[] = {
128			[FD_PIPE_3D] = MSM_PIPE_3D0,
129			[FD_PIPE_2D] = MSM_PIPE_2D0,
130	};
131	struct msm_pipe *msm_pipe = NULL;
132	struct fd_pipe *pipe = NULL;
133
134	msm_pipe = calloc(1, sizeof(*msm_pipe));
135	if (!msm_pipe) {
136		ERROR_MSG("allocation failed");
137		goto fail;
138	}
139
140	pipe = &msm_pipe->base;
141	pipe->funcs = &funcs;
142
143	/* initialize before get_param(): */
144	pipe->dev = dev;
145	msm_pipe->pipe = pipe_id[id];
146
147	/* these params should be supported since the first version of drm/msm: */
148	msm_pipe->gpu_id = get_param(pipe, MSM_PARAM_GPU_ID);
149	msm_pipe->gmem   = get_param(pipe, MSM_PARAM_GMEM_SIZE);
150	msm_pipe->chip_id = get_param(pipe, MSM_PARAM_CHIP_ID);
151
152	if (! msm_pipe->gpu_id)
153		goto fail;
154
155	INFO_MSG("Pipe Info:");
156	INFO_MSG(" GPU-id:          %d", msm_pipe->gpu_id);
157	INFO_MSG(" Chip-id:         0x%08x", msm_pipe->chip_id);
158	INFO_MSG(" GMEM size:       0x%08x", msm_pipe->gmem);
159
160	return pipe;
161fail:
162	if (pipe)
163		fd_pipe_del(pipe);
164	return NULL;
165}
166