1 /*
2 * Copyright (C) 2012-2018 Rob Clark <robclark@freedesktop.org>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 * Authors:
24 * Rob Clark <robclark@freedesktop.org>
25 */
26
27 #include <unistd.h>
28 #include <sys/stat.h>
29 #include <sys/types.h>
30
31 #include "msm_priv.h"
32
33 static void
msm_device_destroy(struct fd_device * dev)34 msm_device_destroy(struct fd_device *dev)
35 {
36 }
37
38 static const struct fd_device_funcs funcs = {
39 .bo_new = msm_bo_new,
40 .bo_from_handle = msm_bo_from_handle,
41 .pipe_new = msm_pipe_new,
42 .destroy = msm_device_destroy,
43 };
44
45 struct fd_device *
msm_device_new(int fd,drmVersionPtr version)46 msm_device_new(int fd, drmVersionPtr version)
47 {
48 struct msm_device *msm_dev;
49 struct fd_device *dev;
50
51 STATIC_ASSERT(FD_BO_PREP_READ == MSM_PREP_READ);
52 STATIC_ASSERT(FD_BO_PREP_WRITE == MSM_PREP_WRITE);
53 STATIC_ASSERT(FD_BO_PREP_NOSYNC == MSM_PREP_NOSYNC);
54
55 msm_dev = calloc(1, sizeof(*msm_dev));
56 if (!msm_dev)
57 return NULL;
58
59 dev = &msm_dev->base;
60 dev->funcs = &funcs;
61 dev->version = version->version_minor;
62
63 /* async submit_queue currently only used for msm_submit_sp: */
64 if (version->version_minor >= FD_VERSION_SOFTPIN) {
65 /* Note the name is intentionally short to avoid the queue
66 * thread's comm truncating the interesting part of the
67 * process name.
68 */
69 util_queue_init(&dev->submit_queue, "sq", 8, 1, 0, NULL);
70 }
71
72 if (version->version_minor >= FD_VERSION_CACHED_COHERENT) {
73 struct drm_msm_gem_new new_req = {
74 .size = 0x1000,
75 .flags = MSM_BO_CACHED_COHERENT,
76 };
77
78 /* The kernel is new enough to support MSM_BO_CACHED_COHERENT,
79 * but that is not a guarantee that the device we are running
80 * on supports it. So do a test allocation to find out.
81 */
82 if (!drmCommandWriteRead(fd, DRM_MSM_GEM_NEW,
83 &new_req, sizeof(new_req))) {
84 struct drm_gem_close close_req = {
85 .handle = new_req.handle,
86 };
87 drmIoctl(fd, DRM_IOCTL_GEM_CLOSE, &close_req);
88
89 dev->has_cached_coherent = true;
90 }
91 }
92
93 dev->bo_size = sizeof(struct msm_bo);
94
95 return dev;
96 }
97