1 /*
2 * Copyright (C) 2016 Christian Gmeiner <christian.gmeiner@gmail.com>
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 * Christian Gmeiner <christian.gmeiner@gmail.com>
25 */
26
27 #include "renderonly/renderonly.h"
28
29 #include <errno.h>
30 #include <fcntl.h>
31 #include <stdio.h>
32 #include <xf86drm.h>
33
34 #include "frontend/drm_driver.h"
35 #include "pipe/p_screen.h"
36 #include "util/format/u_format.h"
37 #include "util/u_inlines.h"
38 #include "util/u_memory.h"
39
40 struct renderonly *
renderonly_dup(const struct renderonly * ro)41 renderonly_dup(const struct renderonly *ro)
42 {
43 struct renderonly *copy;
44
45 copy = CALLOC_STRUCT(renderonly);
46 if (!copy)
47 return NULL;
48
49 memcpy(copy, ro, sizeof(*ro));
50
51 return copy;
52 }
53
54 void
renderonly_scanout_destroy(struct renderonly_scanout * scanout,struct renderonly * ro)55 renderonly_scanout_destroy(struct renderonly_scanout *scanout,
56 struct renderonly *ro)
57 {
58 struct drm_mode_destroy_dumb destroy_dumb = {0};
59
60 if (ro->kms_fd != -1) {
61 destroy_dumb.handle = scanout->handle;
62 drmIoctl(ro->kms_fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_dumb);
63 }
64 FREE(scanout);
65 }
66
67 struct renderonly_scanout *
renderonly_create_kms_dumb_buffer_for_resource(struct pipe_resource * rsc,struct renderonly * ro,struct winsys_handle * out_handle)68 renderonly_create_kms_dumb_buffer_for_resource(struct pipe_resource *rsc,
69 struct renderonly *ro,
70 struct winsys_handle *out_handle)
71 {
72 struct renderonly_scanout *scanout;
73 int err;
74 struct drm_mode_create_dumb create_dumb = {
75 .width = rsc->width0,
76 .height = rsc->height0,
77 .bpp = util_format_get_blocksizebits(rsc->format),
78 };
79 struct drm_mode_destroy_dumb destroy_dumb = {0};
80
81 scanout = CALLOC_STRUCT(renderonly_scanout);
82 if (!scanout)
83 return NULL;
84
85 /* create dumb buffer at scanout GPU */
86 err = drmIoctl(ro->kms_fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_dumb);
87 if (err < 0) {
88 fprintf(stderr, "DRM_IOCTL_MODE_CREATE_DUMB failed: %s\n",
89 strerror(errno));
90 goto free_scanout;
91 }
92
93 scanout->handle = create_dumb.handle;
94 scanout->stride = create_dumb.pitch;
95
96 if (!out_handle)
97 return scanout;
98
99 /* fill in winsys handle */
100 memset(out_handle, 0, sizeof(*out_handle));
101 out_handle->type = WINSYS_HANDLE_TYPE_FD;
102 out_handle->stride = create_dumb.pitch;
103
104 err = drmPrimeHandleToFD(ro->kms_fd, create_dumb.handle, O_CLOEXEC,
105 (int *)&out_handle->handle);
106 if (err < 0) {
107 fprintf(stderr, "failed to export dumb buffer: %s\n", strerror(errno));
108 goto free_dumb;
109 }
110
111 return scanout;
112
113 free_dumb:
114 destroy_dumb.handle = scanout->handle;
115 drmIoctl(ro->kms_fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_dumb);
116
117 free_scanout:
118 FREE(scanout);
119
120 return NULL;
121 }
122
123 struct renderonly_scanout *
renderonly_create_gpu_import_for_resource(struct pipe_resource * rsc,struct renderonly * ro,struct winsys_handle * out_handle)124 renderonly_create_gpu_import_for_resource(struct pipe_resource *rsc,
125 struct renderonly *ro,
126 struct winsys_handle *out_handle)
127 {
128 struct pipe_screen *screen = rsc->screen;
129 struct renderonly_scanout *scanout;
130 boolean status;
131 int fd, err;
132 struct winsys_handle handle = {
133 .type = WINSYS_HANDLE_TYPE_FD
134 };
135
136 scanout = CALLOC_STRUCT(renderonly_scanout);
137 if (!scanout)
138 return NULL;
139
140 status = screen->resource_get_handle(screen, NULL, rsc, &handle,
141 PIPE_HANDLE_USAGE_FRAMEBUFFER_WRITE);
142 if (!status)
143 goto free_scanout;
144
145 scanout->stride = handle.stride;
146 fd = handle.handle;
147
148 err = drmPrimeFDToHandle(ro->kms_fd, fd, &scanout->handle);
149 close(fd);
150
151 if (err < 0) {
152 fprintf(stderr, "drmPrimeFDToHandle() failed: %s\n", strerror(errno));
153 goto free_scanout;
154 }
155
156 return scanout;
157
158 free_scanout:
159 FREE(scanout);
160
161 return NULL;
162 }
163
164