1 /*
2 * Copyright 2012 Red Hat Inc.
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 shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 */
24 #include "priv.h"
25 #include "chan.h"
26
27 #include <core/client.h>
28 #include <core/gpuobj.h>
29 #include <core/notify.h>
30 #include <subdev/mc.h>
31
32 #include <nvif/event.h>
33 #include <nvif/cl0080.h>
34 #include <nvif/unpack.h>
35
36 void
nvkm_fifo_recover_chan(struct nvkm_fifo * fifo,int chid)37 nvkm_fifo_recover_chan(struct nvkm_fifo *fifo, int chid)
38 {
39 unsigned long flags;
40 if (WARN_ON(!fifo->func->recover_chan))
41 return;
42 spin_lock_irqsave(&fifo->lock, flags);
43 fifo->func->recover_chan(fifo, chid);
44 spin_unlock_irqrestore(&fifo->lock, flags);
45 }
46
47 void
nvkm_fifo_pause(struct nvkm_fifo * fifo,unsigned long * flags)48 nvkm_fifo_pause(struct nvkm_fifo *fifo, unsigned long *flags)
49 {
50 return fifo->func->pause(fifo, flags);
51 }
52
53 void
nvkm_fifo_start(struct nvkm_fifo * fifo,unsigned long * flags)54 nvkm_fifo_start(struct nvkm_fifo *fifo, unsigned long *flags)
55 {
56 return fifo->func->start(fifo, flags);
57 }
58
59 void
nvkm_fifo_fault(struct nvkm_fifo * fifo,struct nvkm_fault_data * info)60 nvkm_fifo_fault(struct nvkm_fifo *fifo, struct nvkm_fault_data *info)
61 {
62 return fifo->func->fault(fifo, info);
63 }
64
65 void
nvkm_fifo_chan_put(struct nvkm_fifo * fifo,unsigned long flags,struct nvkm_fifo_chan ** pchan)66 nvkm_fifo_chan_put(struct nvkm_fifo *fifo, unsigned long flags,
67 struct nvkm_fifo_chan **pchan)
68 {
69 struct nvkm_fifo_chan *chan = *pchan;
70 if (likely(chan)) {
71 *pchan = NULL;
72 spin_unlock_irqrestore(&fifo->lock, flags);
73 }
74 }
75
76 struct nvkm_fifo_chan *
nvkm_fifo_chan_inst_locked(struct nvkm_fifo * fifo,u64 inst)77 nvkm_fifo_chan_inst_locked(struct nvkm_fifo *fifo, u64 inst)
78 {
79 struct nvkm_fifo_chan *chan;
80 list_for_each_entry(chan, &fifo->chan, head) {
81 if (chan->inst->addr == inst) {
82 list_del(&chan->head);
83 list_add(&chan->head, &fifo->chan);
84 return chan;
85 }
86 }
87 return NULL;
88 }
89
90 struct nvkm_fifo_chan *
nvkm_fifo_chan_inst(struct nvkm_fifo * fifo,u64 inst,unsigned long * rflags)91 nvkm_fifo_chan_inst(struct nvkm_fifo *fifo, u64 inst, unsigned long *rflags)
92 {
93 struct nvkm_fifo_chan *chan;
94 unsigned long flags;
95 spin_lock_irqsave(&fifo->lock, flags);
96 if ((chan = nvkm_fifo_chan_inst_locked(fifo, inst))) {
97 *rflags = flags;
98 return chan;
99 }
100 spin_unlock_irqrestore(&fifo->lock, flags);
101 return NULL;
102 }
103
104 struct nvkm_fifo_chan *
nvkm_fifo_chan_chid(struct nvkm_fifo * fifo,int chid,unsigned long * rflags)105 nvkm_fifo_chan_chid(struct nvkm_fifo *fifo, int chid, unsigned long *rflags)
106 {
107 struct nvkm_fifo_chan *chan;
108 unsigned long flags;
109 spin_lock_irqsave(&fifo->lock, flags);
110 list_for_each_entry(chan, &fifo->chan, head) {
111 if (chan->chid == chid) {
112 list_del(&chan->head);
113 list_add(&chan->head, &fifo->chan);
114 *rflags = flags;
115 return chan;
116 }
117 }
118 spin_unlock_irqrestore(&fifo->lock, flags);
119 return NULL;
120 }
121
122 void
nvkm_fifo_kevent(struct nvkm_fifo * fifo,int chid)123 nvkm_fifo_kevent(struct nvkm_fifo *fifo, int chid)
124 {
125 nvkm_event_send(&fifo->kevent, 1, chid, NULL, 0);
126 }
127
128 static int
nvkm_fifo_kevent_ctor(struct nvkm_object * object,void * data,u32 size,struct nvkm_notify * notify)129 nvkm_fifo_kevent_ctor(struct nvkm_object *object, void *data, u32 size,
130 struct nvkm_notify *notify)
131 {
132 struct nvkm_fifo_chan *chan = nvkm_fifo_chan(object);
133 if (size == 0) {
134 notify->size = 0;
135 notify->types = 1;
136 notify->index = chan->chid;
137 return 0;
138 }
139 return -ENOSYS;
140 }
141
142 static const struct nvkm_event_func
143 nvkm_fifo_kevent_func = {
144 .ctor = nvkm_fifo_kevent_ctor,
145 };
146
147 static int
nvkm_fifo_cevent_ctor(struct nvkm_object * object,void * data,u32 size,struct nvkm_notify * notify)148 nvkm_fifo_cevent_ctor(struct nvkm_object *object, void *data, u32 size,
149 struct nvkm_notify *notify)
150 {
151 if (size == 0) {
152 notify->size = 0;
153 notify->types = 1;
154 notify->index = 0;
155 return 0;
156 }
157 return -ENOSYS;
158 }
159
160 static const struct nvkm_event_func
161 nvkm_fifo_cevent_func = {
162 .ctor = nvkm_fifo_cevent_ctor,
163 };
164
165 void
nvkm_fifo_cevent(struct nvkm_fifo * fifo)166 nvkm_fifo_cevent(struct nvkm_fifo *fifo)
167 {
168 nvkm_event_send(&fifo->cevent, 1, 0, NULL, 0);
169 }
170
171 static void
nvkm_fifo_uevent_fini(struct nvkm_event * event,int type,int index)172 nvkm_fifo_uevent_fini(struct nvkm_event *event, int type, int index)
173 {
174 struct nvkm_fifo *fifo = container_of(event, typeof(*fifo), uevent);
175 fifo->func->uevent_fini(fifo);
176 }
177
178 static void
nvkm_fifo_uevent_init(struct nvkm_event * event,int type,int index)179 nvkm_fifo_uevent_init(struct nvkm_event *event, int type, int index)
180 {
181 struct nvkm_fifo *fifo = container_of(event, typeof(*fifo), uevent);
182 fifo->func->uevent_init(fifo);
183 }
184
185 static int
nvkm_fifo_uevent_ctor(struct nvkm_object * object,void * data,u32 size,struct nvkm_notify * notify)186 nvkm_fifo_uevent_ctor(struct nvkm_object *object, void *data, u32 size,
187 struct nvkm_notify *notify)
188 {
189 union {
190 struct nvif_notify_uevent_req none;
191 } *req = data;
192 int ret = -ENOSYS;
193
194 if (!(ret = nvif_unvers(ret, &data, &size, req->none))) {
195 notify->size = sizeof(struct nvif_notify_uevent_rep);
196 notify->types = 1;
197 notify->index = 0;
198 }
199
200 return ret;
201 }
202
203 static const struct nvkm_event_func
204 nvkm_fifo_uevent_func = {
205 .ctor = nvkm_fifo_uevent_ctor,
206 .init = nvkm_fifo_uevent_init,
207 .fini = nvkm_fifo_uevent_fini,
208 };
209
210 void
nvkm_fifo_uevent(struct nvkm_fifo * fifo)211 nvkm_fifo_uevent(struct nvkm_fifo *fifo)
212 {
213 struct nvif_notify_uevent_rep rep = {
214 };
215 nvkm_event_send(&fifo->uevent, 1, 0, &rep, sizeof(rep));
216 }
217
218 static int
nvkm_fifo_class_new_(struct nvkm_device * device,const struct nvkm_oclass * oclass,void * data,u32 size,struct nvkm_object ** pobject)219 nvkm_fifo_class_new_(struct nvkm_device *device,
220 const struct nvkm_oclass *oclass, void *data, u32 size,
221 struct nvkm_object **pobject)
222 {
223 struct nvkm_fifo *fifo = nvkm_fifo(oclass->engine);
224 return fifo->func->class_new(fifo, oclass, data, size, pobject);
225 }
226
227 static const struct nvkm_device_oclass
228 nvkm_fifo_class_ = {
229 .ctor = nvkm_fifo_class_new_,
230 };
231
232 static int
nvkm_fifo_class_new(struct nvkm_device * device,const struct nvkm_oclass * oclass,void * data,u32 size,struct nvkm_object ** pobject)233 nvkm_fifo_class_new(struct nvkm_device *device,
234 const struct nvkm_oclass *oclass, void *data, u32 size,
235 struct nvkm_object **pobject)
236 {
237 const struct nvkm_fifo_chan_oclass *sclass = oclass->engn;
238 struct nvkm_fifo *fifo = nvkm_fifo(oclass->engine);
239 return sclass->ctor(fifo, oclass, data, size, pobject);
240 }
241
242 static const struct nvkm_device_oclass
243 nvkm_fifo_class = {
244 .ctor = nvkm_fifo_class_new,
245 };
246
247 static int
nvkm_fifo_class_get(struct nvkm_oclass * oclass,int index,const struct nvkm_device_oclass ** class)248 nvkm_fifo_class_get(struct nvkm_oclass *oclass, int index,
249 const struct nvkm_device_oclass **class)
250 {
251 struct nvkm_fifo *fifo = nvkm_fifo(oclass->engine);
252 const struct nvkm_fifo_chan_oclass *sclass;
253 int c = 0;
254
255 if (fifo->func->class_get) {
256 int ret = fifo->func->class_get(fifo, index, oclass);
257 if (ret == 0)
258 *class = &nvkm_fifo_class_;
259 return ret;
260 }
261
262 while ((sclass = fifo->func->chan[c])) {
263 if (c++ == index) {
264 oclass->base = sclass->base;
265 oclass->engn = sclass;
266 *class = &nvkm_fifo_class;
267 return 0;
268 }
269 }
270
271 return c;
272 }
273
274 static void
nvkm_fifo_intr(struct nvkm_engine * engine)275 nvkm_fifo_intr(struct nvkm_engine *engine)
276 {
277 struct nvkm_fifo *fifo = nvkm_fifo(engine);
278 fifo->func->intr(fifo);
279 }
280
281 static int
nvkm_fifo_fini(struct nvkm_engine * engine,bool suspend)282 nvkm_fifo_fini(struct nvkm_engine *engine, bool suspend)
283 {
284 struct nvkm_fifo *fifo = nvkm_fifo(engine);
285 if (fifo->func->fini)
286 fifo->func->fini(fifo);
287 return 0;
288 }
289
290 static int
nvkm_fifo_info(struct nvkm_engine * engine,u64 mthd,u64 * data)291 nvkm_fifo_info(struct nvkm_engine *engine, u64 mthd, u64 *data)
292 {
293 struct nvkm_fifo *fifo = nvkm_fifo(engine);
294 switch (mthd) {
295 case NV_DEVICE_HOST_CHANNELS: *data = fifo->nr; return 0;
296 default:
297 if (fifo->func->info)
298 return fifo->func->info(fifo, mthd, data);
299 break;
300 }
301 return -ENOSYS;
302 }
303
304 static int
nvkm_fifo_oneinit(struct nvkm_engine * engine)305 nvkm_fifo_oneinit(struct nvkm_engine *engine)
306 {
307 struct nvkm_fifo *fifo = nvkm_fifo(engine);
308 if (fifo->func->oneinit)
309 return fifo->func->oneinit(fifo);
310 return 0;
311 }
312
313 static void
nvkm_fifo_preinit(struct nvkm_engine * engine)314 nvkm_fifo_preinit(struct nvkm_engine *engine)
315 {
316 nvkm_mc_reset(engine->subdev.device, NVKM_ENGINE_FIFO, 0);
317 }
318
319 static int
nvkm_fifo_init(struct nvkm_engine * engine)320 nvkm_fifo_init(struct nvkm_engine *engine)
321 {
322 struct nvkm_fifo *fifo = nvkm_fifo(engine);
323 fifo->func->init(fifo);
324 return 0;
325 }
326
327 static void *
nvkm_fifo_dtor(struct nvkm_engine * engine)328 nvkm_fifo_dtor(struct nvkm_engine *engine)
329 {
330 struct nvkm_fifo *fifo = nvkm_fifo(engine);
331 void *data = fifo;
332 if (fifo->func->dtor)
333 data = fifo->func->dtor(fifo);
334 nvkm_event_fini(&fifo->kevent);
335 nvkm_event_fini(&fifo->cevent);
336 nvkm_event_fini(&fifo->uevent);
337 mutex_destroy(&fifo->mutex);
338 return data;
339 }
340
341 static const struct nvkm_engine_func
342 nvkm_fifo = {
343 .dtor = nvkm_fifo_dtor,
344 .preinit = nvkm_fifo_preinit,
345 .oneinit = nvkm_fifo_oneinit,
346 .info = nvkm_fifo_info,
347 .init = nvkm_fifo_init,
348 .fini = nvkm_fifo_fini,
349 .intr = nvkm_fifo_intr,
350 .base.sclass = nvkm_fifo_class_get,
351 };
352
353 int
nvkm_fifo_ctor(const struct nvkm_fifo_func * func,struct nvkm_device * device,enum nvkm_subdev_type type,int inst,int nr,struct nvkm_fifo * fifo)354 nvkm_fifo_ctor(const struct nvkm_fifo_func *func, struct nvkm_device *device,
355 enum nvkm_subdev_type type, int inst, int nr, struct nvkm_fifo *fifo)
356 {
357 int ret;
358
359 fifo->func = func;
360 INIT_LIST_HEAD(&fifo->chan);
361 spin_lock_init(&fifo->lock);
362 mutex_init(&fifo->mutex);
363
364 if (WARN_ON(fifo->nr > NVKM_FIFO_CHID_NR))
365 fifo->nr = NVKM_FIFO_CHID_NR;
366 else
367 fifo->nr = nr;
368 bitmap_clear(fifo->mask, 0, fifo->nr);
369
370 ret = nvkm_engine_ctor(&nvkm_fifo, device, type, inst, true, &fifo->engine);
371 if (ret)
372 return ret;
373
374 if (func->uevent_init) {
375 ret = nvkm_event_init(&nvkm_fifo_uevent_func, 1, 1,
376 &fifo->uevent);
377 if (ret)
378 return ret;
379 }
380
381 ret = nvkm_event_init(&nvkm_fifo_cevent_func, 1, 1, &fifo->cevent);
382 if (ret)
383 return ret;
384
385 return nvkm_event_init(&nvkm_fifo_kevent_func, 1, nr, &fifo->kevent);
386 }
387