msm_pipe.c revision e88f27b3 
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#include "msm_priv.h"
30
31
32static int msm_pipe_get_param(struct fd_pipe *pipe,
33		enum fd_param_id param, uint64_t *value)
34{
35	struct msm_pipe *msm_pipe = to_msm_pipe(pipe);
36	switch(param) {
37	case FD_DEVICE_ID: // XXX probably get rid of this..
38	case FD_GPU_ID:
39		*value = msm_pipe->gpu_id;
40		return 0;
41	case FD_GMEM_SIZE:
42		*value = msm_pipe->gmem;
43		return 0;
44	default:
45		ERROR_MSG("invalid param id: %d", param);
46		return -1;
47	}
48}
49
50static int msm_pipe_wait(struct fd_pipe *pipe, uint32_t timestamp)
51{
52	struct fd_device *dev = pipe->dev;
53	struct drm_msm_wait_fence req = {
54			.fence = timestamp,
55	};
56	int ret;
57
58	get_abs_timeout(&req.timeout, 5000);
59
60	ret = drmCommandWrite(dev->fd, DRM_MSM_WAIT_FENCE, &req, sizeof(req));
61	if (ret) {
62		ERROR_MSG("wait-fence failed! %d (%s)", ret, strerror(errno));
63		return ret;
64	}
65
66	return 0;
67}
68
69static void msm_pipe_destroy(struct fd_pipe *pipe)
70{
71	struct msm_pipe *msm_pipe = to_msm_pipe(pipe);
72	free(msm_pipe);
73}
74
75static struct fd_pipe_funcs funcs = {
76		.ringbuffer_new = msm_ringbuffer_new,
77		.get_param = msm_pipe_get_param,
78		.wait = msm_pipe_wait,
79		.destroy = msm_pipe_destroy,
80};
81
82static uint64_t get_param(struct fd_device *dev, uint32_t pipe, uint32_t param)
83{
84	struct drm_msm_param req = {
85			.pipe = pipe,
86			.param = param,
87	};
88	int ret;
89
90	ret = drmCommandWriteRead(dev->fd, DRM_MSM_GET_PARAM, &req, sizeof(req));
91	if (ret) {
92		ERROR_MSG("get-param failed! %d (%s)", ret, strerror(errno));
93		return 0;
94	}
95
96	return req.value;
97}
98
99struct fd_pipe * msm_pipe_new(struct fd_device *dev, enum fd_pipe_id id)
100{
101	static const uint32_t pipe_id[] = {
102			[FD_PIPE_3D] = MSM_PIPE_3D0,
103			[FD_PIPE_2D] = MSM_PIPE_2D0,
104	};
105	struct msm_pipe *msm_pipe = NULL;
106	struct fd_pipe *pipe = NULL;
107
108	msm_pipe = calloc(1, sizeof(*msm_pipe));
109	if (!msm_pipe) {
110		ERROR_MSG("allocation failed");
111		goto fail;
112	}
113
114	pipe = &msm_pipe->base;
115	pipe->funcs = &funcs;
116
117	msm_pipe->pipe = pipe_id[id];
118	msm_pipe->gpu_id = get_param(dev, pipe_id[id], MSM_PARAM_GPU_ID);
119	msm_pipe->gmem   = get_param(dev, pipe_id[id], MSM_PARAM_GMEM_SIZE);
120
121	if (! msm_pipe->gpu_id)
122		goto fail;
123
124	INFO_MSG("Pipe Info:");
125	INFO_MSG(" GPU-id:          %d", msm_pipe->gpu_id);
126	INFO_MSG(" GMEM size:       0x%08x", msm_pipe->gmem);
127
128	return pipe;
129fail:
130	if (pipe)
131		fd_pipe_del(pipe);
132	return NULL;
133}
134