drivers/gpu/drm/nouveau/nvkm/engine/disp/base.c

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