msm_pipe.c revision e6188e58 
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
35
36static int msm_pipe_get_param(struct fd_pipe *pipe,
37		enum fd_param_id param, uint64_t *value)
38{
39	struct msm_pipe *msm_pipe = to_msm_pipe(pipe);
40	switch(param) {
41	case FD_DEVICE_ID: // XXX probably get rid of this..
42	case FD_GPU_ID:
43		*value = msm_pipe->gpu_id;
44		return 0;
45	case FD_GMEM_SIZE:
46		*value = msm_pipe->gmem;
47		return 0;
48	case FD_CHIP_ID:
49		*value = msm_pipe->chip_id;
50		return 0;
51	default:
52		ERROR_MSG("invalid param id: %d", param);
53		return -1;
54	}
55}
56
57static int msm_pipe_wait(struct fd_pipe *pipe, uint32_t timestamp)
58{
59	struct fd_device *dev = pipe->dev;
60	struct drm_msm_wait_fence req = {
61			.fence = timestamp,
62	};
63	int ret;
64
65	get_abs_timeout(&req.timeout, 5000);
66
67	ret = drmCommandWrite(dev->fd, DRM_MSM_WAIT_FENCE, &req, sizeof(req));
68	if (ret) {
69		ERROR_MSG("wait-fence failed! %d (%s)", ret, strerror(errno));
70		return ret;
71	}
72
73	return 0;
74}
75
76static void msm_pipe_destroy(struct fd_pipe *pipe)
77{
78	struct msm_pipe *msm_pipe = to_msm_pipe(pipe);
79	free(msm_pipe);
80}
81
82static struct fd_pipe_funcs funcs = {
83		.ringbuffer_new = msm_ringbuffer_new,
84		.get_param = msm_pipe_get_param,
85		.wait = msm_pipe_wait,
86		.destroy = msm_pipe_destroy,
87};
88
89static uint64_t get_param(struct fd_device *dev, uint32_t pipe, uint32_t param)
90{
91	struct drm_msm_param req = {
92			.pipe = pipe,
93			.param = param,
94	};
95	int ret;
96
97	ret = drmCommandWriteRead(dev->fd, DRM_MSM_GET_PARAM, &req, sizeof(req));
98	if (ret) {
99		ERROR_MSG("get-param failed! %d (%s)", ret, strerror(errno));
100		return 0;
101	}
102
103	return req.value;
104}
105
106drm_private struct fd_pipe * msm_pipe_new(struct fd_device *dev,
107		enum fd_pipe_id id)
108{
109	static const uint32_t pipe_id[] = {
110			[FD_PIPE_3D] = MSM_PIPE_3D0,
111			[FD_PIPE_2D] = MSM_PIPE_2D0,
112	};
113	struct msm_pipe *msm_pipe = NULL;
114	struct fd_pipe *pipe = NULL;
115
116	msm_pipe = calloc(1, sizeof(*msm_pipe));
117	if (!msm_pipe) {
118		ERROR_MSG("allocation failed");
119		goto fail;
120	}
121
122	pipe = &msm_pipe->base;
123	pipe->funcs = &funcs;
124
125	msm_pipe->pipe = pipe_id[id];
126	msm_pipe->gpu_id = get_param(dev, pipe_id[id], MSM_PARAM_GPU_ID);
127	msm_pipe->gmem   = get_param(dev, pipe_id[id], MSM_PARAM_GMEM_SIZE);
128	msm_pipe->chip_id = get_param(dev, pipe_id[id], MSM_PARAM_CHIP_ID);
129
130	if (! msm_pipe->gpu_id)
131		goto fail;
132
133	INFO_MSG("Pipe Info:");
134	INFO_MSG(" GPU-id:          %d", msm_pipe->gpu_id);
135	INFO_MSG(" Chip-id:         0x%08x", msm_pipe->chip_id);
136	INFO_MSG(" GMEM size:       0x%08x", msm_pipe->gmem);
137
138	return pipe;
139fail:
140	if (pipe)
141		fd_pipe_del(pipe);
142	return NULL;
143}
144