1 /* $NetBSD: nouveau_nvkm_engine_disp_base.c,v 1.3 2021/12/18 23:45:35 riastradh Exp $ */
2
3 /*
4 * Copyright 2013 Red Hat Inc.
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 * Authors: Ben Skeggs
25 */
26 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_engine_disp_base.c,v 1.3 2021/12/18 23:45:35 riastradh Exp $");
28
29 #include "priv.h"
30 #include "conn.h"
31 #include "dp.h"
32 #include "head.h"
33 #include "ior.h"
34 #include "outp.h"
35
36 #include <core/client.h>
37 #include <core/notify.h>
38 #include <core/oproxy.h>
39 #include <subdev/bios.h>
40 #include <subdev/bios/dcb.h>
41
42 #include <nvif/class.h>
43 #include <nvif/cl0046.h>
44 #include <nvif/event.h>
45 #include <nvif/unpack.h>
46
47 static void
nvkm_disp_vblank_fini(struct nvkm_event * event,int type,int id)48 nvkm_disp_vblank_fini(struct nvkm_event *event, int type, int id)
49 {
50 struct nvkm_disp *disp = container_of(event, typeof(*disp), vblank);
51 struct nvkm_head *head = nvkm_head_find(disp, id);
52 if (head)
53 head->func->vblank_put(head);
54 }
55
56 static void
nvkm_disp_vblank_init(struct nvkm_event * event,int type,int id)57 nvkm_disp_vblank_init(struct nvkm_event *event, int type, int id)
58 {
59 struct nvkm_disp *disp = container_of(event, typeof(*disp), vblank);
60 struct nvkm_head *head = nvkm_head_find(disp, id);
61 if (head)
62 head->func->vblank_get(head);
63 }
64
65 static int
nvkm_disp_vblank_ctor(struct nvkm_object * object,void * data,u32 size,struct nvkm_notify * notify)66 nvkm_disp_vblank_ctor(struct nvkm_object *object, void *data, u32 size,
67 struct nvkm_notify *notify)
68 {
69 struct nvkm_disp *disp =
70 container_of(notify->event, typeof(*disp), vblank);
71 union {
72 struct nvif_notify_head_req_v0 v0;
73 } *req = data;
74 int ret = -ENOSYS;
75
76 if (!(ret = nvif_unpack(ret, &data, &size, req->v0, 0, 0, false))) {
77 notify->size = sizeof(struct nvif_notify_head_rep_v0);
78 if (ret = -ENXIO, req->v0.head <= disp->vblank.index_nr) {
79 notify->types = 1;
80 notify->index = req->v0.head;
81 return 0;
82 }
83 }
84
85 return ret;
86 }
87
88 static const struct nvkm_event_func
89 nvkm_disp_vblank_func = {
90 .ctor = nvkm_disp_vblank_ctor,
91 .init = nvkm_disp_vblank_init,
92 .fini = nvkm_disp_vblank_fini,
93 };
94
95 void
nvkm_disp_vblank(struct nvkm_disp * disp,int head)96 nvkm_disp_vblank(struct nvkm_disp *disp, int head)
97 {
98 struct nvif_notify_head_rep_v0 rep = {};
99 nvkm_event_send(&disp->vblank, 1, head, &rep, sizeof(rep));
100 }
101
102 static int
nvkm_disp_hpd_ctor(struct nvkm_object * object,void * data,u32 size,struct nvkm_notify * notify)103 nvkm_disp_hpd_ctor(struct nvkm_object *object, void *data, u32 size,
104 struct nvkm_notify *notify)
105 {
106 struct nvkm_disp *disp =
107 container_of(notify->event, typeof(*disp), hpd);
108 union {
109 struct nvif_notify_conn_req_v0 v0;
110 } *req = data;
111 struct nvkm_outp *outp;
112 int ret = -ENOSYS;
113
114 if (!(ret = nvif_unpack(ret, &data, &size, req->v0, 0, 0, false))) {
115 notify->size = sizeof(struct nvif_notify_conn_rep_v0);
116 list_for_each_entry(outp, &disp->outp, head) {
117 if (ret = -ENXIO, outp->conn->index == req->v0.conn) {
118 if (ret = -ENODEV, outp->conn->hpd.event) {
119 notify->types = req->v0.mask;
120 notify->index = req->v0.conn;
121 ret = 0;
122 }
123 break;
124 }
125 }
126 }
127
128 return ret;
129 }
130
131 static const struct nvkm_event_func
132 nvkm_disp_hpd_func = {
133 .ctor = nvkm_disp_hpd_ctor
134 };
135
136 int
nvkm_disp_ntfy(struct nvkm_object * object,u32 type,struct nvkm_event ** event)137 nvkm_disp_ntfy(struct nvkm_object *object, u32 type, struct nvkm_event **event)
138 {
139 struct nvkm_disp *disp = nvkm_disp(object->engine);
140 switch (type) {
141 case NV04_DISP_NTFY_VBLANK:
142 *event = &disp->vblank;
143 return 0;
144 case NV04_DISP_NTFY_CONN:
145 *event = &disp->hpd;
146 return 0;
147 default:
148 break;
149 }
150 return -EINVAL;
151 }
152
153 static void
nvkm_disp_class_del(struct nvkm_oproxy * oproxy)154 nvkm_disp_class_del(struct nvkm_oproxy *oproxy)
155 {
156 struct nvkm_disp *disp = nvkm_disp(oproxy->base.engine);
157 mutex_lock(&disp->engine.subdev.mutex);
158 if (disp->client == oproxy)
159 disp->client = NULL;
160 mutex_unlock(&disp->engine.subdev.mutex);
161 }
162
163 static const struct nvkm_oproxy_func
164 nvkm_disp_class = {
165 .dtor[1] = nvkm_disp_class_del,
166 };
167
168 static int
nvkm_disp_class_new(struct nvkm_device * device,const struct nvkm_oclass * oclass,void * data,u32 size,struct nvkm_object ** pobject)169 nvkm_disp_class_new(struct nvkm_device *device,
170 const struct nvkm_oclass *oclass, void *data, u32 size,
171 struct nvkm_object **pobject)
172 {
173 const struct nvkm_disp_oclass *sclass = oclass->engn;
174 struct nvkm_disp *disp = nvkm_disp(oclass->engine);
175 struct nvkm_oproxy *oproxy;
176 int ret;
177
178 ret = nvkm_oproxy_new_(&nvkm_disp_class, oclass, &oproxy);
179 if (ret)
180 return ret;
181 *pobject = &oproxy->base;
182
183 mutex_lock(&disp->engine.subdev.mutex);
184 if (disp->client) {
185 mutex_unlock(&disp->engine.subdev.mutex);
186 return -EBUSY;
187 }
188 disp->client = oproxy;
189 mutex_unlock(&disp->engine.subdev.mutex);
190
191 return sclass->ctor(disp, oclass, data, size, &oproxy->object);
192 }
193
194 static const struct nvkm_device_oclass
195 nvkm_disp_sclass = {
196 .ctor = nvkm_disp_class_new,
197 };
198
199 static int
nvkm_disp_class_get(struct nvkm_oclass * oclass,int index,const struct nvkm_device_oclass ** class)200 nvkm_disp_class_get(struct nvkm_oclass *oclass, int index,
201 const struct nvkm_device_oclass **class)
202 {
203 struct nvkm_disp *disp = nvkm_disp(oclass->engine);
204 if (index == 0) {
205 const struct nvkm_disp_oclass *root = disp->func->root(disp);
206 oclass->base = root->base;
207 oclass->engn = root;
208 *class = &nvkm_disp_sclass;
209 return 0;
210 }
211 return 1;
212 }
213
214 static void
nvkm_disp_intr(struct nvkm_engine * engine)215 nvkm_disp_intr(struct nvkm_engine *engine)
216 {
217 struct nvkm_disp *disp = nvkm_disp(engine);
218 disp->func->intr(disp);
219 }
220
221 static int
nvkm_disp_fini(struct nvkm_engine * engine,bool suspend)222 nvkm_disp_fini(struct nvkm_engine *engine, bool suspend)
223 {
224 struct nvkm_disp *disp = nvkm_disp(engine);
225 struct nvkm_conn *conn;
226 struct nvkm_outp *outp;
227
228 if (disp->func->fini)
229 disp->func->fini(disp);
230
231 list_for_each_entry(outp, &disp->outp, head) {
232 nvkm_outp_fini(outp);
233 }
234
235 list_for_each_entry(conn, &disp->conn, head) {
236 nvkm_conn_fini(conn);
237 }
238
239 return 0;
240 }
241
242 static int
nvkm_disp_init(struct nvkm_engine * engine)243 nvkm_disp_init(struct nvkm_engine *engine)
244 {
245 struct nvkm_disp *disp = nvkm_disp(engine);
246 struct nvkm_conn *conn;
247 struct nvkm_outp *outp;
248 struct nvkm_ior *ior;
249
250 list_for_each_entry(conn, &disp->conn, head) {
251 nvkm_conn_init(conn);
252 }
253
254 list_for_each_entry(outp, &disp->outp, head) {
255 nvkm_outp_init(outp);
256 }
257
258 if (disp->func->init) {
259 int ret = disp->func->init(disp);
260 if (ret)
261 return ret;
262 }
263
264 /* Set 'normal' (ie. when it's attached to a head) state for
265 * each output resource to 'fully enabled'.
266 */
267 list_for_each_entry(ior, &disp->ior, head) {
268 ior->func->power(ior, true, true, true, true, true);
269 }
270
271 return 0;
272 }
273
274 static int
nvkm_disp_oneinit(struct nvkm_engine * engine)275 nvkm_disp_oneinit(struct nvkm_engine *engine)
276 {
277 struct nvkm_disp *disp = nvkm_disp(engine);
278 struct nvkm_subdev *subdev = &disp->engine.subdev;
279 struct nvkm_bios *bios = subdev->device->bios;
280 struct nvkm_outp *outp, *outt, *pair;
281 struct nvkm_conn *conn;
282 struct nvkm_head *head;
283 struct nvkm_ior *ior;
284 struct nvbios_connE connE;
285 struct dcb_output dcbE;
286 u8 hpd = 0, ver, hdr;
287 u32 data;
288 int ret, i;
289
290 /* Create output path objects for each VBIOS display path. */
291 i = -1;
292 while ((data = dcb_outp_parse(bios, ++i, &ver, &hdr, &dcbE))) {
293 if (ver < 0x40) /* No support for chipsets prior to NV50. */
294 break;
295 if (dcbE.type == DCB_OUTPUT_UNUSED)
296 continue;
297 if (dcbE.type == DCB_OUTPUT_EOL)
298 break;
299 outp = NULL;
300
301 switch (dcbE.type) {
302 case DCB_OUTPUT_ANALOG:
303 case DCB_OUTPUT_TV:
304 case DCB_OUTPUT_TMDS:
305 case DCB_OUTPUT_LVDS:
306 ret = nvkm_outp_new(disp, i, &dcbE, &outp);
307 break;
308 case DCB_OUTPUT_DP:
309 ret = nvkm_dp_new(disp, i, &dcbE, &outp);
310 break;
311 case DCB_OUTPUT_WFD:
312 /* No support for WFD yet. */
313 ret = -ENODEV;
314 continue;
315 default:
316 nvkm_warn(subdev, "dcb %d type %d unknown\n",
317 i, dcbE.type);
318 continue;
319 }
320
321 if (ret) {
322 if (outp) {
323 if (ret != -ENODEV)
324 OUTP_ERR(outp, "ctor failed: %d", ret);
325 else
326 OUTP_DBG(outp, "not supported");
327 nvkm_outp_del(&outp);
328 continue;
329 }
330 nvkm_error(subdev, "failed to create outp %d\n", i);
331 continue;
332 }
333
334 list_add_tail(&outp->head, &disp->outp);
335 hpd = max(hpd, (u8)(dcbE.connector + 1));
336 }
337
338 /* Create connector objects based on available output paths. */
339 list_for_each_entry_safe(outp, outt, &disp->outp, head) {
340 /* VBIOS data *should* give us the most useful information. */
341 data = nvbios_connEp(bios, outp->info.connector, &ver, &hdr,
342 &connE);
343
344 /* No bios connector data... */
345 if (!data) {
346 /* Heuristic: anything with the same ccb index is
347 * considered to be on the same connector, any
348 * output path without an associated ccb entry will
349 * be put on its own connector.
350 */
351 int ccb_index = outp->info.i2c_index;
352 if (ccb_index != 0xf) {
353 list_for_each_entry(pair, &disp->outp, head) {
354 if (pair->info.i2c_index == ccb_index) {
355 outp->conn = pair->conn;
356 break;
357 }
358 }
359 }
360
361 /* Connector shared with another output path. */
362 if (outp->conn)
363 continue;
364
365 memset(&connE, 0x00, sizeof(connE));
366 connE.type = DCB_CONNECTOR_NONE;
367 i = -1;
368 } else {
369 i = outp->info.connector;
370 }
371
372 /* Check that we haven't already created this connector. */
373 list_for_each_entry(conn, &disp->conn, head) {
374 if (conn->index == outp->info.connector) {
375 outp->conn = conn;
376 break;
377 }
378 }
379
380 if (outp->conn)
381 continue;
382
383 /* Apparently we need to create a new one! */
384 ret = nvkm_conn_new(disp, i, &connE, &outp->conn);
385 if (ret) {
386 nvkm_error(&disp->engine.subdev,
387 "failed to create outp %d conn: %d\n",
388 outp->index, ret);
389 nvkm_conn_del(&outp->conn);
390 list_del(&outp->head);
391 nvkm_outp_del(&outp);
392 continue;
393 }
394
395 list_add_tail(&outp->conn->head, &disp->conn);
396 }
397
398 ret = nvkm_event_init(&nvkm_disp_hpd_func, 3, hpd, &disp->hpd);
399 if (ret)
400 return ret;
401
402 if (disp->func->oneinit) {
403 ret = disp->func->oneinit(disp);
404 if (ret)
405 return ret;
406 }
407
408 /* Enforce identity-mapped SOR assignment for panels, which have
409 * certain bits (ie. backlight controls) wired to a specific SOR.
410 */
411 list_for_each_entry(outp, &disp->outp, head) {
412 if (outp->conn->info.type == DCB_CONNECTOR_LVDS ||
413 outp->conn->info.type == DCB_CONNECTOR_eDP) {
414 ior = nvkm_ior_find(disp, SOR, ffs(outp->info.or) - 1);
415 if (!WARN_ON(!ior))
416 ior->identity = true;
417 outp->identity = true;
418 }
419 }
420
421 i = 0;
422 list_for_each_entry(head, &disp->head, head)
423 i = max(i, head->id + 1);
424
425 return nvkm_event_init(&nvkm_disp_vblank_func, 1, i, &disp->vblank);
426 }
427
428 static void *
nvkm_disp_dtor(struct nvkm_engine * engine)429 nvkm_disp_dtor(struct nvkm_engine *engine)
430 {
431 struct nvkm_disp *disp = nvkm_disp(engine);
432 struct nvkm_conn *conn;
433 struct nvkm_outp *outp;
434 void *data = disp;
435
436 if (disp->func->dtor)
437 data = disp->func->dtor(disp);
438
439 nvkm_event_fini(&disp->vblank);
440 nvkm_event_fini(&disp->hpd);
441
442 while (!list_empty(&disp->conn)) {
443 conn = list_first_entry(&disp->conn, typeof(*conn), head);
444 list_del(&conn->head);
445 nvkm_conn_del(&conn);
446 }
447
448 while (!list_empty(&disp->outp)) {
449 outp = list_first_entry(&disp->outp, typeof(*outp), head);
450 list_del(&outp->head);
451 nvkm_outp_del(&outp);
452 }
453
454 while (!list_empty(&disp->ior)) {
455 struct nvkm_ior *ior =
456 list_first_entry(&disp->ior, typeof(*ior), head);
457 nvkm_ior_del(&ior);
458 }
459
460 while (!list_empty(&disp->head)) {
461 struct nvkm_head *head =
462 list_first_entry(&disp->head, typeof(*head), head);
463 nvkm_head_del(&head);
464 }
465
466 return data;
467 }
468
469 static const struct nvkm_engine_func
470 nvkm_disp = {
471 .dtor = nvkm_disp_dtor,
472 .oneinit = nvkm_disp_oneinit,
473 .init = nvkm_disp_init,
474 .fini = nvkm_disp_fini,
475 .intr = nvkm_disp_intr,
476 .base.sclass = nvkm_disp_class_get,
477 };
478
479 int
nvkm_disp_ctor(const struct nvkm_disp_func * func,struct nvkm_device * device,int index,struct nvkm_disp * disp)480 nvkm_disp_ctor(const struct nvkm_disp_func *func, struct nvkm_device *device,
481 int index, struct nvkm_disp *disp)
482 {
483 disp->func = func;
484 INIT_LIST_HEAD(&disp->head);
485 INIT_LIST_HEAD(&disp->ior);
486 INIT_LIST_HEAD(&disp->outp);
487 INIT_LIST_HEAD(&disp->conn);
488 return nvkm_engine_ctor(&nvkm_disp, device, index, true, &disp->engine);
489 }
490
491 int
nvkm_disp_new_(const struct nvkm_disp_func * func,struct nvkm_device * device,int index,struct nvkm_disp ** pdisp)492 nvkm_disp_new_(const struct nvkm_disp_func *func, struct nvkm_device *device,
493 int index, struct nvkm_disp **pdisp)
494 {
495 if (!(*pdisp = kzalloc(sizeof(**pdisp), GFP_KERNEL)))
496 return -ENOMEM;
497 return nvkm_disp_ctor(func, device, index, *pdisp);
498 }
499