diff options
Diffstat (limited to 'drivers/gpu/nvgpu/gk20a/tsg_gk20a.c')
-rw-r--r-- | drivers/gpu/nvgpu/gk20a/tsg_gk20a.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/drivers/gpu/nvgpu/gk20a/tsg_gk20a.c b/drivers/gpu/nvgpu/gk20a/tsg_gk20a.c index b41cca08..a0232a69 100644 --- a/drivers/gpu/nvgpu/gk20a/tsg_gk20a.c +++ b/drivers/gpu/nvgpu/gk20a/tsg_gk20a.c | |||
@@ -153,6 +153,9 @@ int gk20a_init_tsg_support(struct gk20a *g, u32 tsgid) | |||
153 | INIT_LIST_HEAD(&tsg->ch_list); | 153 | INIT_LIST_HEAD(&tsg->ch_list); |
154 | mutex_init(&tsg->ch_list_lock); | 154 | mutex_init(&tsg->ch_list_lock); |
155 | 155 | ||
156 | INIT_LIST_HEAD(&tsg->event_id_list); | ||
157 | mutex_init(&tsg->event_id_list_lock); | ||
158 | |||
156 | return 0; | 159 | return 0; |
157 | } | 160 | } |
158 | 161 | ||
@@ -184,6 +187,122 @@ static int gk20a_tsg_set_priority(struct gk20a *g, struct tsg_gk20a *tsg, | |||
184 | return 0; | 187 | return 0; |
185 | } | 188 | } |
186 | 189 | ||
190 | static int gk20a_tsg_get_event_data_from_id(struct tsg_gk20a *tsg, | ||
191 | int event_id, | ||
192 | struct gk20a_event_id_data **event_id_data) | ||
193 | { | ||
194 | struct gk20a_event_id_data *local_event_id_data; | ||
195 | bool event_found = false; | ||
196 | |||
197 | mutex_lock(&tsg->event_id_list_lock); | ||
198 | list_for_each_entry(local_event_id_data, &tsg->event_id_list, | ||
199 | event_id_node) { | ||
200 | if (local_event_id_data->event_id == event_id) { | ||
201 | event_found = true; | ||
202 | break; | ||
203 | } | ||
204 | } | ||
205 | mutex_unlock(&tsg->event_id_list_lock); | ||
206 | |||
207 | if (event_found) { | ||
208 | *event_id_data = local_event_id_data; | ||
209 | return 0; | ||
210 | } else { | ||
211 | return -1; | ||
212 | } | ||
213 | } | ||
214 | |||
215 | static int gk20a_tsg_event_id_enable(struct tsg_gk20a *tsg, | ||
216 | int event_id, | ||
217 | int *fd) | ||
218 | { | ||
219 | int err = 0; | ||
220 | int local_fd; | ||
221 | struct file *file; | ||
222 | char *name; | ||
223 | struct gk20a_event_id_data *event_id_data; | ||
224 | |||
225 | err = gk20a_tsg_get_event_data_from_id(tsg, | ||
226 | event_id, &event_id_data); | ||
227 | if (err == 0) /* We already have event enabled */ | ||
228 | return -EINVAL; | ||
229 | |||
230 | err = get_unused_fd_flags(O_RDWR); | ||
231 | if (err < 0) | ||
232 | return err; | ||
233 | local_fd = err; | ||
234 | |||
235 | name = kasprintf(GFP_KERNEL, "nvgpu-event%d-fd%d", | ||
236 | event_id, local_fd); | ||
237 | |||
238 | file = anon_inode_getfile(name, &gk20a_event_id_ops, | ||
239 | NULL, O_RDWR); | ||
240 | kfree(name); | ||
241 | if (IS_ERR(file)) { | ||
242 | err = PTR_ERR(file); | ||
243 | goto clean_up; | ||
244 | } | ||
245 | |||
246 | event_id_data = kzalloc(sizeof(*event_id_data), GFP_KERNEL); | ||
247 | if (!event_id_data) { | ||
248 | err = -ENOMEM; | ||
249 | goto clean_up_file; | ||
250 | } | ||
251 | event_id_data->g = tsg->g; | ||
252 | event_id_data->id = tsg->tsgid; | ||
253 | event_id_data->is_tsg = true; | ||
254 | event_id_data->event_id = event_id; | ||
255 | |||
256 | init_waitqueue_head(&event_id_data->event_id_wq); | ||
257 | mutex_init(&event_id_data->lock); | ||
258 | INIT_LIST_HEAD(&event_id_data->event_id_node); | ||
259 | |||
260 | mutex_lock(&tsg->event_id_list_lock); | ||
261 | list_add_tail(&event_id_data->event_id_node, &tsg->event_id_list); | ||
262 | mutex_unlock(&tsg->event_id_list_lock); | ||
263 | |||
264 | fd_install(local_fd, file); | ||
265 | file->private_data = event_id_data; | ||
266 | |||
267 | *fd = local_fd; | ||
268 | |||
269 | return 0; | ||
270 | |||
271 | clean_up_file: | ||
272 | fput(file); | ||
273 | clean_up: | ||
274 | put_unused_fd(local_fd); | ||
275 | return err; | ||
276 | } | ||
277 | |||
278 | static int gk20a_tsg_event_id_ctrl(struct gk20a *g, struct tsg_gk20a *tsg, | ||
279 | struct nvgpu_event_id_ctrl_args *args) | ||
280 | { | ||
281 | int err = 0; | ||
282 | int fd = -1; | ||
283 | |||
284 | if (args->event_id < 0 || | ||
285 | args->event_id >= NVGPU_IOCTL_CHANNEL_EVENT_ID_MAX) | ||
286 | return -EINVAL; | ||
287 | |||
288 | switch (args->cmd) { | ||
289 | case NVGPU_IOCTL_CHANNEL_EVENT_ID_CMD_ENABLE: | ||
290 | err = gk20a_tsg_event_id_enable(tsg, args->event_id, &fd); | ||
291 | if (!err) | ||
292 | args->event_fd = fd; | ||
293 | break; | ||
294 | |||
295 | default: | ||
296 | gk20a_err(dev_from_gk20a(tsg->g), | ||
297 | "unrecognized tsg event id cmd: 0x%x", | ||
298 | args->cmd); | ||
299 | err = -EINVAL; | ||
300 | break; | ||
301 | } | ||
302 | |||
303 | return err; | ||
304 | } | ||
305 | |||
187 | static void release_used_tsg(struct fifo_gk20a *f, struct tsg_gk20a *tsg) | 306 | static void release_used_tsg(struct fifo_gk20a *f, struct tsg_gk20a *tsg) |
188 | { | 307 | { |
189 | mutex_lock(&f->tsg_inuse_mutex); | 308 | mutex_lock(&f->tsg_inuse_mutex); |
@@ -372,6 +491,13 @@ long gk20a_tsg_dev_ioctl(struct file *filp, unsigned int cmd, | |||
372 | break; | 491 | break; |
373 | } | 492 | } |
374 | 493 | ||
494 | case NVGPU_IOCTL_TSG_EVENT_ID_CTRL: | ||
495 | { | ||
496 | err = gk20a_tsg_event_id_ctrl(g, tsg, | ||
497 | (struct nvgpu_event_id_ctrl_args *)buf); | ||
498 | break; | ||
499 | } | ||
500 | |||
375 | default: | 501 | default: |
376 | gk20a_err(dev_from_gk20a(g), | 502 | gk20a_err(dev_from_gk20a(g), |
377 | "unrecognized tsg gpu ioctl cmd: 0x%x", | 503 | "unrecognized tsg gpu ioctl cmd: 0x%x", |