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 struct msm_device *msm_dev = to_msm_device(dev);
37 if (util_queue_is_initialized(&msm_dev->submit_queue)) {
38 util_queue_destroy(&msm_dev->submit_queue);
39 }
40 free(msm_dev);
41 }
42
43 static const struct fd_device_funcs funcs = {
44 .bo_new_handle = msm_bo_new_handle,
45 .bo_from_handle = msm_bo_from_handle,
46 .pipe_new = msm_pipe_new,
47 .destroy = msm_device_destroy,
48 };
49
50 struct fd_device *
msm_device_new(int fd,drmVersionPtr version)51 msm_device_new(int fd, drmVersionPtr version)
52 {
53 struct msm_device *msm_dev;
54 struct fd_device *dev;
55
56 STATIC_ASSERT(FD_BO_PREP_READ == MSM_PREP_READ);
57 STATIC_ASSERT(FD_BO_PREP_WRITE == MSM_PREP_WRITE);
58 STATIC_ASSERT(FD_BO_PREP_NOSYNC == MSM_PREP_NOSYNC);
59
60 msm_dev = calloc(1, sizeof(*msm_dev));
61 if (!msm_dev)
62 return NULL;
63
64 dev = &msm_dev->base;
65 dev->funcs = &funcs;
66
67 /* async submit_queue currently only used for msm_submit_sp: */
68 if (version->version_minor >= FD_VERSION_SOFTPIN) {
69 /* Note the name is intentionally short to avoid the queue
70 * thread's comm truncating the interesting part of the
71 * process name.
72 */
73 util_queue_init(&msm_dev->submit_queue, "sq", 8, 1, 0, NULL);
74 }
75
76 if (version->version_minor >= FD_VERSION_CACHED_COHERENT) {
77 struct drm_msm_gem_new new_req = {
78 .size = 0x1000,
79 .flags = MSM_BO_CACHED_COHERENT,
80 };
81
82 /* The kernel is new enough to support MSM_BO_CACHED_COHERENT,
83 * but that is not a guarantee that the device we are running
84 * on supports it. So do a test allocation to find out.
85 */
86 if (!drmCommandWriteRead(fd, DRM_MSM_GEM_NEW,
87 &new_req, sizeof(new_req))) {
88 struct drm_gem_close close_req = {
89 .handle = new_req.handle,
90 };
91 drmIoctl(fd, DRM_IOCTL_GEM_CLOSE, &close_req);
92
93 dev->has_cached_coherent = true;
94 }
95 }
96
97 dev->bo_size = sizeof(struct msm_bo);
98
99 return dev;
100 }
101