1 /*
2 * Copyright © 2012, 2013 Thierry Reding
3 * Copyright © 2013 Erik Faye-Lund
4 * Copyright © 2014 NVIDIA Corporation
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 shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25 #include <errno.h>
26 #include <fcntl.h>
27 #include <string.h>
28 #include <unistd.h>
29
30 #include <sys/mman.h>
31
32 #include <xf86drm.h>
33
34 #include <tegra_drm.h>
35
36 #include "private.h"
37
drm_tegra_bo_free(struct drm_tegra_bo * bo)38 static void drm_tegra_bo_free(struct drm_tegra_bo *bo)
39 {
40 struct drm_tegra *drm = bo->drm;
41 struct drm_gem_close args;
42
43 if (bo->map)
44 munmap(bo->map, bo->size);
45
46 memset(&args, 0, sizeof(args));
47 args.handle = bo->handle;
48
49 drmIoctl(drm->fd, DRM_IOCTL_GEM_CLOSE, &args);
50
51 free(bo);
52 }
53
drm_tegra_wrap(struct drm_tegra ** drmp,int fd,bool close)54 static int drm_tegra_wrap(struct drm_tegra **drmp, int fd, bool close)
55 {
56 struct drm_tegra *drm;
57
58 if (fd < 0 || !drmp)
59 return -EINVAL;
60
61 drm = calloc(1, sizeof(*drm));
62 if (!drm)
63 return -ENOMEM;
64
65 drm->close = close;
66 drm->fd = fd;
67
68 *drmp = drm;
69
70 return 0;
71 }
72
drm_tegra_new(struct drm_tegra ** drmp,int fd)73 int drm_tegra_new(struct drm_tegra **drmp, int fd)
74 {
75 bool supported = false;
76 drmVersionPtr version;
77
78 version = drmGetVersion(fd);
79 if (!version)
80 return -ENOMEM;
81
82 if (!strncmp(version->name, "tegra", version->name_len))
83 supported = true;
84
85 drmFreeVersion(version);
86
87 if (!supported)
88 return -ENOTSUP;
89
90 return drm_tegra_wrap(drmp, fd, false);
91 }
92
drm_tegra_close(struct drm_tegra * drm)93 void drm_tegra_close(struct drm_tegra *drm)
94 {
95 if (!drm)
96 return;
97
98 if (drm->close)
99 close(drm->fd);
100
101 free(drm);
102 }
103
drm_tegra_bo_new(struct drm_tegra_bo ** bop,struct drm_tegra * drm,uint32_t flags,uint32_t size)104 int drm_tegra_bo_new(struct drm_tegra_bo **bop, struct drm_tegra *drm,
105 uint32_t flags, uint32_t size)
106 {
107 struct drm_tegra_gem_create args;
108 struct drm_tegra_bo *bo;
109 int err;
110
111 if (!drm || size == 0 || !bop)
112 return -EINVAL;
113
114 bo = calloc(1, sizeof(*bo));
115 if (!bo)
116 return -ENOMEM;
117
118 atomic_set(&bo->ref, 1);
119 bo->flags = flags;
120 bo->size = size;
121 bo->drm = drm;
122
123 memset(&args, 0, sizeof(args));
124 args.flags = flags;
125 args.size = size;
126
127 err = drmCommandWriteRead(drm->fd, DRM_TEGRA_GEM_CREATE, &args,
128 sizeof(args));
129 if (err < 0) {
130 err = -errno;
131 free(bo);
132 return err;
133 }
134
135 bo->handle = args.handle;
136
137 *bop = bo;
138
139 return 0;
140 }
141
drm_tegra_bo_wrap(struct drm_tegra_bo ** bop,struct drm_tegra * drm,uint32_t handle,uint32_t flags,uint32_t size)142 int drm_tegra_bo_wrap(struct drm_tegra_bo **bop, struct drm_tegra *drm,
143 uint32_t handle, uint32_t flags, uint32_t size)
144 {
145 struct drm_tegra_bo *bo;
146
147 if (!drm || !bop)
148 return -EINVAL;
149
150 bo = calloc(1, sizeof(*bo));
151 if (!bo)
152 return -ENOMEM;
153
154 atomic_set(&bo->ref, 1);
155 bo->handle = handle;
156 bo->flags = flags;
157 bo->size = size;
158 bo->drm = drm;
159
160 *bop = bo;
161
162 return 0;
163 }
164
drm_tegra_bo_name_ref(struct drm_tegra * drm,uint32_t name,uint32_t size,struct drm_tegra_bo ** bop)165 int drm_tegra_bo_name_ref(struct drm_tegra *drm, uint32_t name, uint32_t size,
166 struct drm_tegra_bo **bop)
167 {
168 struct drm_tegra_bo *bo;
169 struct drm_gem_open open_args;
170 struct drm_gem_close close_args;
171 int ret;
172
173 memset(&open_args, 0, sizeof(open_args));
174
175 open_args.name = name;
176
177 ret = drmIoctl(drm->fd, DRM_IOCTL_GEM_OPEN, &open_args);
178 if (ret)
179 return ret;
180
181 ret = drm_tegra_bo_wrap(bop, drm, open_args.handle, 0, size);
182 if (ret)
183 goto err;
184
185 (*bop)->name = name;
186
187 return 0;
188
189 err:
190 memset(&close_args, 0, sizeof(close_args));
191 close_args.handle = open_args.handle;
192 drmIoctl(drm->fd, DRM_IOCTL_GEM_CLOSE, &close_args);
193
194 return ret;
195 }
196
drm_tegra_bo_name_get(struct drm_tegra_bo * bo,uint32_t * name)197 int drm_tegra_bo_name_get(struct drm_tegra_bo *bo, uint32_t *name)
198 {
199 struct drm_gem_flink args;
200 int ret;
201
202 args.handle = bo->handle;
203
204 *name = bo->name;
205 if (*name && *name != ~0U)
206 return 0;
207
208 ret = drmIoctl(bo->drm->fd, DRM_IOCTL_GEM_FLINK, &args);
209 if (ret) {
210 *name = 0;
211 return ret;
212 }
213
214 bo->name = args.name;
215 *name = bo->name;
216
217 return 0;
218 }
219
drm_tegra_bo_ref(struct drm_tegra_bo * bo)220 struct drm_tegra_bo *drm_tegra_bo_ref(struct drm_tegra_bo *bo)
221 {
222 if (bo)
223 atomic_inc(&bo->ref);
224
225 return bo;
226 }
227
drm_tegra_bo_unref(struct drm_tegra_bo * bo)228 void drm_tegra_bo_unref(struct drm_tegra_bo *bo)
229 {
230 if (bo && atomic_dec_and_test(&bo->ref))
231 drm_tegra_bo_free(bo);
232 }
233
drm_tegra_bo_get_handle(struct drm_tegra_bo * bo,uint32_t * handle)234 int drm_tegra_bo_get_handle(struct drm_tegra_bo *bo, uint32_t *handle)
235 {
236 if (!bo || !handle)
237 return -EINVAL;
238
239 *handle = bo->handle;
240
241 return 0;
242 }
243
drm_tegra_bo_map(struct drm_tegra_bo * bo,void ** ptr)244 int drm_tegra_bo_map(struct drm_tegra_bo *bo, void **ptr)
245 {
246 struct drm_tegra *drm = bo->drm;
247
248 if (!bo->map) {
249 struct drm_tegra_gem_mmap args;
250 int err;
251
252 memset(&args, 0, sizeof(args));
253 args.handle = bo->handle;
254
255 err = drmCommandWriteRead(drm->fd, DRM_TEGRA_GEM_MMAP, &args,
256 sizeof(args));
257 if (err < 0)
258 return -errno;
259
260 bo->offset = args.offset;
261
262 bo->map = mmap(0, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED,
263 drm->fd, bo->offset);
264 if (bo->map == MAP_FAILED) {
265 bo->map = NULL;
266 return -errno;
267 }
268 }
269
270 if (ptr)
271 *ptr = bo->map;
272
273 return 0;
274 }
275
drm_tegra_bo_unmap(struct drm_tegra_bo * bo)276 int drm_tegra_bo_unmap(struct drm_tegra_bo *bo)
277 {
278 if (!bo)
279 return -EINVAL;
280
281 if (!bo->map)
282 return 0;
283
284 if (munmap(bo->map, bo->size))
285 return -errno;
286
287 bo->map = NULL;
288
289 return 0;
290 }
291
drm_tegra_bo_get_flags(struct drm_tegra_bo * bo,uint32_t * flags)292 int drm_tegra_bo_get_flags(struct drm_tegra_bo *bo, uint32_t *flags)
293 {
294 struct drm_tegra_gem_get_flags args;
295 struct drm_tegra *drm = bo->drm;
296 int err;
297
298 if (!bo)
299 return -EINVAL;
300
301 memset(&args, 0, sizeof(args));
302 args.handle = bo->handle;
303
304 err = drmCommandWriteRead(drm->fd, DRM_TEGRA_GEM_GET_FLAGS, &args,
305 sizeof(args));
306 if (err < 0)
307 return -errno;
308
309 if (flags)
310 *flags = args.flags;
311
312 return 0;
313 }
314
drm_tegra_bo_set_flags(struct drm_tegra_bo * bo,uint32_t flags)315 int drm_tegra_bo_set_flags(struct drm_tegra_bo *bo, uint32_t flags)
316 {
317 struct drm_tegra_gem_get_flags args;
318 struct drm_tegra *drm = bo->drm;
319 int err;
320
321 if (!bo)
322 return -EINVAL;
323
324 memset(&args, 0, sizeof(args));
325 args.handle = bo->handle;
326 args.flags = flags;
327
328 err = drmCommandWriteRead(drm->fd, DRM_TEGRA_GEM_SET_FLAGS, &args,
329 sizeof(args));
330 if (err < 0)
331 return -errno;
332
333 return 0;
334 }
335
drm_tegra_bo_get_tiling(struct drm_tegra_bo * bo,struct drm_tegra_bo_tiling * tiling)336 int drm_tegra_bo_get_tiling(struct drm_tegra_bo *bo,
337 struct drm_tegra_bo_tiling *tiling)
338 {
339 struct drm_tegra_gem_get_tiling args;
340 struct drm_tegra *drm = bo->drm;
341 int err;
342
343 if (!bo)
344 return -EINVAL;
345
346 memset(&args, 0, sizeof(args));
347 args.handle = bo->handle;
348
349 err = drmCommandWriteRead(drm->fd, DRM_TEGRA_GEM_GET_TILING, &args,
350 sizeof(args));
351 if (err < 0)
352 return -errno;
353
354 if (tiling) {
355 tiling->mode = args.mode;
356 tiling->value = args.value;
357 }
358
359 return 0;
360 }
361
drm_tegra_bo_set_tiling(struct drm_tegra_bo * bo,const struct drm_tegra_bo_tiling * tiling)362 int drm_tegra_bo_set_tiling(struct drm_tegra_bo *bo,
363 const struct drm_tegra_bo_tiling *tiling)
364 {
365 struct drm_tegra_gem_set_tiling args;
366 struct drm_tegra *drm = bo->drm;
367 int err;
368
369 if (!bo)
370 return -EINVAL;
371
372 memset(&args, 0, sizeof(args));
373 args.handle = bo->handle;
374 args.mode = tiling->mode;
375 args.value = tiling->value;
376
377 err = drmCommandWriteRead(drm->fd, DRM_TEGRA_GEM_SET_TILING, &args,
378 sizeof(args));
379 if (err < 0)
380 return -errno;
381
382 return 0;
383 }
384