drivers/gpu/drm/nouveau/nv50_display.c

   1 /*
   2  * Copyright (C) 2008 Maarten Maathuis.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #define NOUVEAU_DMA_DEBUG (nouveau_reg_debug & NOUVEAU_REG_DEBUG_EVO)
  28 #include "nv50_display.h"
  29 #include "nouveau_crtc.h"
  30 #include "nouveau_encoder.h"
  31 #include "nouveau_connector.h"
  32 #include "nouveau_fb.h"
  33 #include "nouveau_fbcon.h"
  34 #include "nouveau_ramht.h"
  35 #include "nouveau_software.h"
  36 #include "drm_crtc_helper.h"
  37
  38 static void nv50_display_isr(struct drm_device *);
  39 static void nv50_display_bh(unsigned long);
  40
  41 static inline int
  42 nv50_sor_nr(struct drm_device *dev)
  43 {
  44         struct drm_nouveau_private *dev_priv = dev->dev_private;
  45
  46         if (dev_priv->chipset  < 0x90 ||
  47             dev_priv->chipset == 0x92 ||
  48             dev_priv->chipset == 0xa0)
  49                 return 2;
  50
  51         return 4;
  52 }
  53
  54 u32
  55 nv50_display_active_crtcs(struct drm_device *dev)
  56 {
  57         struct drm_nouveau_private *dev_priv = dev->dev_private;
  58         u32 mask = 0;
  59         int i;
  60
  61         if (dev_priv->chipset  < 0x90 ||
  62             dev_priv->chipset == 0x92 ||
  63             dev_priv->chipset == 0xa0) {
  64                 for (i = 0; i < 2; i++)
  65                         mask |= nv_rd32(dev, NV50_PDISPLAY_SOR_MODE_CTRL_C(i));
  66         } else {
  67                 for (i = 0; i < 4; i++)
  68                         mask |= nv_rd32(dev, NV90_PDISPLAY_SOR_MODE_CTRL_C(i));
  69         }
  70
  71         for (i = 0; i < 3; i++)
  72                 mask |= nv_rd32(dev, NV50_PDISPLAY_DAC_MODE_CTRL_C(i));
  73
  74         return mask & 3;
  75 }
  76
  77 static int
  78 evo_icmd(struct drm_device *dev, int ch, u32 mthd, u32 data)
  79 {
  80         int ret = 0;
  81         nv_mask(dev, 0x610300 + (ch * 0x08), 0x00000001, 0x00000001);
  82         nv_wr32(dev, 0x610304 + (ch * 0x08), data);
  83         nv_wr32(dev, 0x610300 + (ch * 0x08), 0x80000001 | mthd);
  84         if (!nv_wait(dev, 0x610300 + (ch * 0x08), 0x80000000, 0x00000000))
  85                 ret = -EBUSY;
  86         if (ret || (nouveau_reg_debug & NOUVEAU_REG_DEBUG_EVO))
  87                 NV_INFO(dev, "EvoPIO: %d 0x%04x 0x%08x\n", ch, mthd, data);
  88         nv_mask(dev, 0x610300 + (ch * 0x08), 0x00000001, 0x00000000);
  89         return ret;
  90 }
  91
  92 int
  93 nv50_display_early_init(struct drm_device *dev)
  94 {
  95         u32 ctrl = nv_rd32(dev, 0x610200);
  96         int i;
  97
  98         /* check if master evo channel is already active, a good a sign as any
  99          * that the display engine is in a weird state (hibernate/kexec), if
 100          * it is, do our best to reset the display engine...
 101          */
 102         if ((ctrl & 0x00000003) == 0x00000003) {
 103                 NV_INFO(dev, "PDISP: EVO(0) 0x%08x, resetting...\n", ctrl);
 104
 105                 /* deactivate both heads first, PDISP will disappear forever
 106                  * (well, until you power cycle) on some boards as soon as
 107                  * PMC_ENABLE is hit unless they are..
 108                  */
 109                 for (i = 0; i < 2; i++) {
 110                         evo_icmd(dev, 0, 0x0880 + (i * 0x400), 0x05000000);
 111                         evo_icmd(dev, 0, 0x089c + (i * 0x400), 0);
 112                         evo_icmd(dev, 0, 0x0840 + (i * 0x400), 0);
 113                         evo_icmd(dev, 0, 0x0844 + (i * 0x400), 0);
 114                         evo_icmd(dev, 0, 0x085c + (i * 0x400), 0);
 115                         evo_icmd(dev, 0, 0x0874 + (i * 0x400), 0);
 116                 }
 117                 evo_icmd(dev, 0, 0x0080, 0);
 118
 119                 /* reset PDISP */
 120                 nv_mask(dev, 0x000200, 0x40000000, 0x00000000);
 121                 nv_mask(dev, 0x000200, 0x40000000, 0x40000000);
 122         }
 123
 124         return 0;
 125 }
 126
 127 void
 128 nv50_display_late_takedown(struct drm_device *dev)
 129 {
 130 }
 131
 132 int
 133 nv50_display_sync(struct drm_device *dev)
 134 {
 135         struct drm_nouveau_private *dev_priv = dev->dev_private;
 136         struct nouveau_timer_engine *ptimer = &dev_priv->engine.timer;
 137         struct nv50_display *disp = nv50_display(dev);
 138         struct nouveau_channel *evo = disp->master;
 139         u64 start;
 140         int ret;
 141
 142         ret = RING_SPACE(evo, 6);
 143         if (ret == 0) {
 144                 BEGIN_NV04(evo, 0, 0x0084, 1);
 145                 OUT_RING  (evo, 0x80000000);
 146                 BEGIN_NV04(evo, 0, 0x0080, 1);
 147                 OUT_RING  (evo, 0);
 148                 BEGIN_NV04(evo, 0, 0x0084, 1);
 149                 OUT_RING  (evo, 0x00000000);
 150
 151                 nv_wo32(disp->ntfy, 0x000, 0x00000000);
 152                 FIRE_RING (evo);
 153
 154                 start = ptimer->read(dev);
 155                 do {
 156                         if (nv_ro32(disp->ntfy, 0x000))
 157                                 return 0;
 158                 } while (ptimer->read(dev) - start < 2000000000ULL);
 159         }
 160
 161         return -EBUSY;
 162 }
 163
 164 int
 165 nv50_display_init(struct drm_device *dev)
 166 {
 167         struct nouveau_channel *evo;
 168         int ret, i;
 169         u32 val;
 170
 171         NV_DEBUG_KMS(dev, "\n");
 172
 173         nv_wr32(dev, 0x00610184, nv_rd32(dev, 0x00614004));
 174
 175         /*
 176          * I think the 0x006101XX range is some kind of main control area
 177          * that enables things.
 178          */
 179         /* CRTC? */
 180         for (i = 0; i < 2; i++) {
 181                 val = nv_rd32(dev, 0x00616100 + (i * 0x800));
 182                 nv_wr32(dev, 0x00610190 + (i * 0x10), val);
 183                 val = nv_rd32(dev, 0x00616104 + (i * 0x800));
 184                 nv_wr32(dev, 0x00610194 + (i * 0x10), val);
 185                 val = nv_rd32(dev, 0x00616108 + (i * 0x800));
 186                 nv_wr32(dev, 0x00610198 + (i * 0x10), val);
 187                 val = nv_rd32(dev, 0x0061610c + (i * 0x800));
 188                 nv_wr32(dev, 0x0061019c + (i * 0x10), val);
 189         }
 190
 191         /* DAC */
 192         for (i = 0; i < 3; i++) {
 193                 val = nv_rd32(dev, 0x0061a000 + (i * 0x800));
 194                 nv_wr32(dev, 0x006101d0 + (i * 0x04), val);
 195         }
 196
 197         /* SOR */
 198         for (i = 0; i < nv50_sor_nr(dev); i++) {
 199                 val = nv_rd32(dev, 0x0061c000 + (i * 0x800));
 200                 nv_wr32(dev, 0x006101e0 + (i * 0x04), val);
 201         }
 202
 203         /* EXT */
 204         for (i = 0; i < 3; i++) {
 205                 val = nv_rd32(dev, 0x0061e000 + (i * 0x800));
 206                 nv_wr32(dev, 0x006101f0 + (i * 0x04), val);
 207         }
 208
 209         for (i = 0; i < 3; i++) {
 210                 nv_wr32(dev, NV50_PDISPLAY_DAC_DPMS_CTRL(i), 0x00550000 |
 211                         NV50_PDISPLAY_DAC_DPMS_CTRL_PENDING);
 212                 nv_wr32(dev, NV50_PDISPLAY_DAC_CLK_CTRL1(i), 0x00000001);
 213         }
 214
 215         /* The precise purpose is unknown, i suspect it has something to do
 216          * with text mode.
 217          */
 218         if (nv_rd32(dev, NV50_PDISPLAY_INTR_1) & 0x100) {
 219                 nv_wr32(dev, NV50_PDISPLAY_INTR_1, 0x100);
 220                 nv_wr32(dev, 0x006194e8, nv_rd32(dev, 0x006194e8) & ~1);
 221                 if (!nv_wait(dev, 0x006194e8, 2, 0)) {
 222                         NV_ERROR(dev, "timeout: (0x6194e8 & 2) != 0\n");
 223                         NV_ERROR(dev, "0x6194e8 = 0x%08x\n",
 224                                                 nv_rd32(dev, 0x6194e8));
 225                         return -EBUSY;
 226                 }
 227         }
 228
 229         for (i = 0; i < 2; i++) {
 230                 nv_wr32(dev, NV50_PDISPLAY_CURSOR_CURSOR_CTRL2(i), 0x2000);
 231                 if (!nv_wait(dev, NV50_PDISPLAY_CURSOR_CURSOR_CTRL2(i),
 232                              NV50_PDISPLAY_CURSOR_CURSOR_CTRL2_STATUS, 0)) {
 233                         NV_ERROR(dev, "timeout: CURSOR_CTRL2_STATUS == 0\n");
 234                         NV_ERROR(dev, "CURSOR_CTRL2 = 0x%08x\n",
 235                                  nv_rd32(dev, NV50_PDISPLAY_CURSOR_CURSOR_CTRL2(i)));
 236                         return -EBUSY;
 237                 }
 238
 239                 nv_wr32(dev, NV50_PDISPLAY_CURSOR_CURSOR_CTRL2(i),
 240                         NV50_PDISPLAY_CURSOR_CURSOR_CTRL2_ON);
 241                 if (!nv_wait(dev, NV50_PDISPLAY_CURSOR_CURSOR_CTRL2(i),
 242                              NV50_PDISPLAY_CURSOR_CURSOR_CTRL2_STATUS,
 243                              NV50_PDISPLAY_CURSOR_CURSOR_CTRL2_STATUS_ACTIVE)) {
 244                         NV_ERROR(dev, "timeout: "
 245                                       "CURSOR_CTRL2_STATUS_ACTIVE(%d)\n", i);
 246                         NV_ERROR(dev, "CURSOR_CTRL2(%d) = 0x%08x\n", i,
 247                                  nv_rd32(dev, NV50_PDISPLAY_CURSOR_CURSOR_CTRL2(i)));
 248                         return -EBUSY;
 249                 }
 250         }
 251
 252         nv_wr32(dev, NV50_PDISPLAY_PIO_CTRL, 0x00000000);
 253         nv_mask(dev, NV50_PDISPLAY_INTR_0, 0x00000000, 0x00000000);
 254         nv_wr32(dev, NV50_PDISPLAY_INTR_EN_0, 0x00000000);
 255         nv_mask(dev, NV50_PDISPLAY_INTR_1, 0x00000000, 0x00000000);
 256         nv_wr32(dev, NV50_PDISPLAY_INTR_EN_1,
 257                      NV50_PDISPLAY_INTR_EN_1_CLK_UNK10 |
 258                      NV50_PDISPLAY_INTR_EN_1_CLK_UNK20 |
 259                      NV50_PDISPLAY_INTR_EN_1_CLK_UNK40);
 260
 261         ret = nv50_evo_init(dev);
 262         if (ret)
 263                 return ret;
 264         evo = nv50_display(dev)->master;
 265
 266         nv_wr32(dev, NV50_PDISPLAY_OBJECTS, (evo->ramin->vinst >> 8) | 9);
 267
 268         ret = RING_SPACE(evo, 3);
 269         if (ret)
 270                 return ret;
 271         BEGIN_NV04(evo, 0, NV50_EVO_UNK84, 2);
 272         OUT_RING  (evo, NV50_EVO_UNK84_NOTIFY_DISABLED);
 273         OUT_RING  (evo, NvEvoSync);
 274
 275         return nv50_display_sync(dev);
 276 }
 277
 278 void
 279 nv50_display_fini(struct drm_device *dev)
 280 {
 281         struct nv50_display *disp = nv50_display(dev);
 282         struct nouveau_channel *evo = disp->master;
 283         struct drm_crtc *drm_crtc;
 284         int ret, i;
 285
 286         NV_DEBUG_KMS(dev, "\n");
 287
 288         list_for_each_entry(drm_crtc, &dev->mode_config.crtc_list, head) {
 289                 struct nouveau_crtc *crtc = nouveau_crtc(drm_crtc);
 290
 291                 nv50_crtc_blank(crtc, true);
 292         }
 293
 294         ret = RING_SPACE(evo, 2);
 295         if (ret == 0) {
 296                 BEGIN_NV04(evo, 0, NV50_EVO_UPDATE, 1);
 297                 OUT_RING(evo, 0);
 298         }
 299         FIRE_RING(evo);
 300
 301         /* Almost like ack'ing a vblank interrupt, maybe in the spirit of
 302          * cleaning up?
 303          */
 304         list_for_each_entry(drm_crtc, &dev->mode_config.crtc_list, head) {
 305                 struct nouveau_crtc *crtc = nouveau_crtc(drm_crtc);
 306                 uint32_t mask = NV50_PDISPLAY_INTR_1_VBLANK_CRTC_(crtc->index);
 307
 308                 if (!crtc->base.enabled)
 309                         continue;
 310
 311                 nv_wr32(dev, NV50_PDISPLAY_INTR_1, mask);
 312                 if (!nv_wait(dev, NV50_PDISPLAY_INTR_1, mask, mask)) {
 313                         NV_ERROR(dev, "timeout: (0x610024 & 0x%08x) == "
 314                                       "0x%08x\n", mask, mask);
 315                         NV_ERROR(dev, "0x610024 = 0x%08x\n",
 316                                  nv_rd32(dev, NV50_PDISPLAY_INTR_1));
 317                 }
 318         }
 319
 320         for (i = 0; i < 2; i++) {
 321                 nv_wr32(dev, NV50_PDISPLAY_CURSOR_CURSOR_CTRL2(i), 0);
 322                 if (!nv_wait(dev, NV50_PDISPLAY_CURSOR_CURSOR_CTRL2(i),
 323                              NV50_PDISPLAY_CURSOR_CURSOR_CTRL2_STATUS, 0)) {
 324                         NV_ERROR(dev, "timeout: CURSOR_CTRL2_STATUS == 0\n");
 325                         NV_ERROR(dev, "CURSOR_CTRL2 = 0x%08x\n",
 326                                  nv_rd32(dev, NV50_PDISPLAY_CURSOR_CURSOR_CTRL2(i)));
 327                 }
 328         }
 329
 330         nv50_evo_fini(dev);
 331
 332         for (i = 0; i < 3; i++) {
 333                 if (!nv_wait(dev, NV50_PDISPLAY_SOR_DPMS_STATE(i),
 334                              NV50_PDISPLAY_SOR_DPMS_STATE_WAIT, 0)) {
 335                         NV_ERROR(dev, "timeout: SOR_DPMS_STATE_WAIT(%d) == 0\n", i);
 336                         NV_ERROR(dev, "SOR_DPMS_STATE(%d) = 0x%08x\n", i,
 337                                   nv_rd32(dev, NV50_PDISPLAY_SOR_DPMS_STATE(i)));
 338                 }
 339         }
 340
 341         /* disable interrupts. */
 342         nv_wr32(dev, NV50_PDISPLAY_INTR_EN_1, 0x00000000);
 343 }
 344
 345 int
 346 nv50_display_create(struct drm_device *dev)
 347 {
 348         struct drm_nouveau_private *dev_priv = dev->dev_private;
 349         struct dcb_table *dcb = &dev_priv->vbios.dcb;
 350         struct drm_connector *connector, *ct;
 351         struct nv50_display *priv;
 352         int ret, i;
 353
 354         NV_DEBUG_KMS(dev, "\n");
 355
 356         priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 357         if (!priv)
 358                 return -ENOMEM;
 359         dev_priv->engine.display.priv = priv;
 360
 361         /* Create CRTC objects */
 362         for (i = 0; i < 2; i++) {
 363                 ret = nv50_crtc_create(dev, i);
 364                 if (ret)
 365                         return ret;
 366         }
 367
 368         /* We setup the encoders from the BIOS table */
 369         for (i = 0 ; i < dcb->entries; i++) {
 370                 struct dcb_entry *entry = &dcb->entry[i];
 371
 372                 if (entry->location != DCB_LOC_ON_CHIP) {
 373                         NV_WARN(dev, "Off-chip encoder %d/%d unsupported\n",
 374                                 entry->type, ffs(entry->or) - 1);
 375                         continue;
 376                 }
 377
 378                 connector = nouveau_connector_create(dev, entry->connector);
 379                 if (IS_ERR(connector))
 380                         continue;
 381
 382                 switch (entry->type) {
 383                 case OUTPUT_TMDS:
 384                 case OUTPUT_LVDS:
 385                 case OUTPUT_DP:
 386                         nv50_sor_create(connector, entry);
 387                         break;
 388                 case OUTPUT_ANALOG:
 389                         nv50_dac_create(connector, entry);
 390                         break;
 391                 default:
 392                         NV_WARN(dev, "DCB encoder %d unknown\n", entry->type);
 393                         continue;
 394                 }
 395         }
 396
 397         list_for_each_entry_safe(connector, ct,
 398                                  &dev->mode_config.connector_list, head) {
 399                 if (!connector->encoder_ids[0]) {
 400                         NV_WARN(dev, "%s has no encoders, removing\n",
 401                                 drm_get_connector_name(connector));
 402                         connector->funcs->destroy(connector);
 403                 }
 404         }
 405
 406         tasklet_init(&priv->tasklet, nv50_display_bh, (unsigned long)dev);
 407         nouveau_irq_register(dev, 26, nv50_display_isr);
 408
 409         ret = nv50_evo_create(dev);
 410         if (ret) {
 411                 nv50_display_destroy(dev);
 412                 return ret;
 413         }
 414
 415         return 0;
 416 }
 417
 418 void
 419 nv50_display_destroy(struct drm_device *dev)
 420 {
 421         struct nv50_display *disp = nv50_display(dev);
 422
 423         NV_DEBUG_KMS(dev, "\n");
 424
 425         nv50_evo_destroy(dev);
 426         nouveau_irq_unregister(dev, 26);
 427         kfree(disp);
 428 }
 429
 430 void
 431 nv50_display_flip_stop(struct drm_crtc *crtc)
 432 {
 433         struct nv50_display *disp = nv50_display(crtc->dev);
 434         struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 435         struct nv50_display_crtc *dispc = &disp->crtc[nv_crtc->index];
 436         struct nouveau_channel *evo = dispc->sync;
 437         int ret;
 438
 439         ret = RING_SPACE(evo, 8);
 440         if (ret) {
 441                 WARN_ON(1);
 442                 return;
 443         }
 444
 445         BEGIN_NV04(evo, 0, 0x0084, 1);
 446         OUT_RING  (evo, 0x00000000);
 447         BEGIN_NV04(evo, 0, 0x0094, 1);
 448         OUT_RING  (evo, 0x00000000);
 449         BEGIN_NV04(evo, 0, 0x00c0, 1);
 450         OUT_RING  (evo, 0x00000000);
 451         BEGIN_NV04(evo, 0, 0x0080, 1);
 452         OUT_RING  (evo, 0x00000000);
 453         FIRE_RING (evo);
 454 }
 455
 456 int
 457 nv50_display_flip_next(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 458                        struct nouveau_channel *chan)
 459 {
 460         struct drm_nouveau_private *dev_priv = crtc->dev->dev_private;
 461         struct nouveau_framebuffer *nv_fb = nouveau_framebuffer(fb);
 462         struct nv50_display *disp = nv50_display(crtc->dev);
 463         struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 464         struct nv50_display_crtc *dispc = &disp->crtc[nv_crtc->index];
 465         struct nouveau_channel *evo = dispc->sync;
 466         int ret;
 467
 468         ret = RING_SPACE(evo, chan ? 25 : 27);
 469         if (unlikely(ret))
 470                 return ret;
 471
 472         /* synchronise with the rendering channel, if necessary */
 473         if (likely(chan)) {
 474                 ret = RING_SPACE(chan, 10);
 475                 if (ret) {
 476                         WIND_RING(evo);
 477                         return ret;
 478                 }
 479
 480                 if (dev_priv->chipset < 0xc0) {
 481                         BEGIN_NV04(chan, 0, 0x0060, 2);
 482                         OUT_RING  (chan, NvEvoSema0 + nv_crtc->index);
 483                         OUT_RING  (chan, dispc->sem.offset);
 484                         BEGIN_NV04(chan, 0, 0x006c, 1);
 485                         OUT_RING  (chan, 0xf00d0000 | dispc->sem.value);
 486                         BEGIN_NV04(chan, 0, 0x0064, 2);
 487                         OUT_RING  (chan, dispc->sem.offset ^ 0x10);
 488                         OUT_RING  (chan, 0x74b1e000);
 489                         BEGIN_NV04(chan, 0, 0x0060, 1);
 490                         if (dev_priv->chipset < 0x84)
 491                                 OUT_RING  (chan, NvSema);
 492                         else
 493                                 OUT_RING  (chan, chan->vram_handle);
 494                 } else {
 495                         u64 offset = nvc0_software_crtc(chan, nv_crtc->index);
 496                         offset += dispc->sem.offset;
 497                         BEGIN_NVC0(chan, 0, 0x0010, 4);
 498                         OUT_RING  (chan, upper_32_bits(offset));
 499                         OUT_RING  (chan, lower_32_bits(offset));
 500                         OUT_RING  (chan, 0xf00d0000 | dispc->sem.value);
 501                         OUT_RING  (chan, 0x1002);
 502                         BEGIN_NVC0(chan, 0, 0x0010, 4);
 503                         OUT_RING  (chan, upper_32_bits(offset));
 504                         OUT_RING  (chan, lower_32_bits(offset ^ 0x10));
 505                         OUT_RING  (chan, 0x74b1e000);
 506                         OUT_RING  (chan, 0x1001);
 507                 }
 508                 FIRE_RING (chan);
 509         } else {
 510                 nouveau_bo_wr32(dispc->sem.bo, dispc->sem.offset / 4,
 511                                 0xf00d0000 | dispc->sem.value);
 512         }
 513
 514         /* queue the flip on the crtc's "display sync" channel */
 515         BEGIN_NV04(evo, 0, 0x0100, 1);
 516         OUT_RING  (evo, 0xfffe0000);
 517         if (chan) {
 518                 BEGIN_NV04(evo, 0, 0x0084, 1);
 519                 OUT_RING  (evo, 0x00000100);
 520         } else {
 521                 BEGIN_NV04(evo, 0, 0x0084, 1);
 522                 OUT_RING  (evo, 0x00000010);
 523                 /* allows gamma somehow, PDISP will bitch at you if
 524                  * you don't wait for vblank before changing this..
 525                  */
 526                 BEGIN_NV04(evo, 0, 0x00e0, 1);
 527                 OUT_RING  (evo, 0x40000000);
 528         }
 529         BEGIN_NV04(evo, 0, 0x0088, 4);
 530         OUT_RING  (evo, dispc->sem.offset);
 531         OUT_RING  (evo, 0xf00d0000 | dispc->sem.value);
 532         OUT_RING  (evo, 0x74b1e000);
 533         OUT_RING  (evo, NvEvoSync);
 534         BEGIN_NV04(evo, 0, 0x00a0, 2);
 535         OUT_RING  (evo, 0x00000000);
 536         OUT_RING  (evo, 0x00000000);
 537         BEGIN_NV04(evo, 0, 0x00c0, 1);
 538         OUT_RING  (evo, nv_fb->r_dma);
 539         BEGIN_NV04(evo, 0, 0x0110, 2);
 540         OUT_RING  (evo, 0x00000000);
 541         OUT_RING  (evo, 0x00000000);
 542         BEGIN_NV04(evo, 0, 0x0800, 5);
 543         OUT_RING  (evo, nv_fb->nvbo->bo.offset >> 8);
 544         OUT_RING  (evo, 0);
 545         OUT_RING  (evo, (fb->height << 16) | fb->width);
 546         OUT_RING  (evo, nv_fb->r_pitch);
 547         OUT_RING  (evo, nv_fb->r_format);
 548         BEGIN_NV04(evo, 0, 0x0080, 1);
 549         OUT_RING  (evo, 0x00000000);
 550         FIRE_RING (evo);
 551
 552         dispc->sem.offset ^= 0x10;
 553         dispc->sem.value++;
 554         return 0;
 555 }
 556
 557 static u16
 558 nv50_display_script_select(struct drm_device *dev, struct dcb_entry *dcb,
 559                            u32 mc, int pxclk)
 560 {
 561         struct drm_nouveau_private *dev_priv = dev->dev_private;
 562         struct nouveau_connector *nv_connector = NULL;
 563         struct drm_encoder *encoder;
 564         struct nvbios *bios = &dev_priv->vbios;
 565         u32 script = 0, or;
 566
 567         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 568                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 569
 570                 if (nv_encoder->dcb != dcb)
 571                         continue;
 572
 573                 nv_connector = nouveau_encoder_connector_get(nv_encoder);
 574                 break;
 575         }
 576
 577         or = ffs(dcb->or) - 1;
 578         switch (dcb->type) {
 579         case OUTPUT_LVDS:
 580                 script = (mc >> 8) & 0xf;
 581                 if (bios->fp_no_ddc) {
 582                         if (bios->fp.dual_link)
 583                                 script |= 0x0100;
 584                         if (bios->fp.if_is_24bit)
 585                                 script |= 0x0200;
 586                 } else {
 587                         /* determine number of lvds links */
 588                         if (nv_connector && nv_connector->edid &&
 589                             nv_connector->type == DCB_CONNECTOR_LVDS_SPWG) {
 590                                 /* http://www.spwg.org */
 591                                 if (((u8 *)nv_connector->edid)[121] == 2)
 592                                         script |= 0x0100;
 593                         } else
 594                         if (pxclk >= bios->fp.duallink_transition_clk) {
 595                                 script |= 0x0100;
 596                         }
 597
 598                         /* determine panel depth */
 599                         if (script & 0x0100) {
 600                                 if (bios->fp.strapless_is_24bit & 2)
 601                                         script |= 0x0200;
 602                         } else {
 603                                 if (bios->fp.strapless_is_24bit & 1)
 604                                         script |= 0x0200;
 605                         }
 606
 607                         if (nv_connector && nv_connector->edid &&
 608                             (nv_connector->edid->revision >= 4) &&
 609                             (nv_connector->edid->input & 0x70) >= 0x20)
 610                                 script |= 0x0200;
 611                 }
 612
 613                 if (nouveau_uscript_lvds >= 0) {
 614                         NV_INFO(dev, "override script 0x%04x with 0x%04x "
 615                                      "for output LVDS-%d\n", script,
 616                                      nouveau_uscript_lvds, or);
 617                         script = nouveau_uscript_lvds;
 618                 }
 619                 break;
 620         case OUTPUT_TMDS:
 621                 script = (mc >> 8) & 0xf;
 622                 if (pxclk >= 165000)
 623                         script |= 0x0100;
 624
 625                 if (nouveau_uscript_tmds >= 0) {
 626                         NV_INFO(dev, "override script 0x%04x with 0x%04x "
 627                                      "for output TMDS-%d\n", script,
 628                                      nouveau_uscript_tmds, or);
 629                         script = nouveau_uscript_tmds;
 630                 }
 631                 break;
 632         case OUTPUT_DP:
 633                 script = (mc >> 8) & 0xf;
 634                 break;
 635         case OUTPUT_ANALOG:
 636                 script = 0xff;
 637                 break;
 638         default:
 639                 NV_ERROR(dev, "modeset on unsupported output type!\n");
 640                 break;
 641         }
 642
 643         return script;
 644 }
 645
 646 static void
 647 nv50_display_vblank_crtc_handler(struct drm_device *dev, int crtc)
 648 {
 649         nouveau_software_vblank(dev, crtc);
 650         drm_handle_vblank(dev, crtc);
 651 }
 652
 653 static void
 654 nv50_display_vblank_handler(struct drm_device *dev, uint32_t intr)
 655 {
 656         if (intr & NV50_PDISPLAY_INTR_1_VBLANK_CRTC_0)
 657                 nv50_display_vblank_crtc_handler(dev, 0);
 658
 659         if (intr & NV50_PDISPLAY_INTR_1_VBLANK_CRTC_1)
 660                 nv50_display_vblank_crtc_handler(dev, 1);
 661
 662         nv_wr32(dev, NV50_PDISPLAY_INTR_1, NV50_PDISPLAY_INTR_1_VBLANK_CRTC);
 663 }
 664
 665 static void
 666 nv50_display_unk10_handler(struct drm_device *dev)
 667 {
 668         struct drm_nouveau_private *dev_priv = dev->dev_private;
 669         struct nv50_display *disp = nv50_display(dev);
 670         u32 unk30 = nv_rd32(dev, 0x610030), mc;
 671         int i, crtc, or = 0, type = OUTPUT_ANY;
 672
 673         NV_DEBUG_KMS(dev, "0x610030: 0x%08x\n", unk30);
 674         disp->irq.dcb = NULL;
 675
 676         nv_wr32(dev, 0x619494, nv_rd32(dev, 0x619494) & ~8);
 677
 678         /* Determine which CRTC we're dealing with, only 1 ever will be
 679          * signalled at the same time with the current nouveau code.
 680          */
 681         crtc = ffs((unk30 & 0x00000060) >> 5) - 1;
 682         if (crtc < 0)
 683                 goto ack;
 684
 685         /* Nothing needs to be done for the encoder */
 686         crtc = ffs((unk30 & 0x00000180) >> 7) - 1;
 687         if (crtc < 0)
 688                 goto ack;
 689
 690         /* Find which encoder was connected to the CRTC */
 691         for (i = 0; type == OUTPUT_ANY && i < 3; i++) {
 692                 mc = nv_rd32(dev, NV50_PDISPLAY_DAC_MODE_CTRL_C(i));
 693                 NV_DEBUG_KMS(dev, "DAC-%d mc: 0x%08x\n", i, mc);
 694                 if (!(mc & (1 << crtc)))
 695                         continue;
 696
 697                 switch ((mc & 0x00000f00) >> 8) {
 698                 case 0: type = OUTPUT_ANALOG; break;
 699                 case 1: type = OUTPUT_TV; break;
 700                 default:
 701                         NV_ERROR(dev, "invalid mc, DAC-%d: 0x%08x\n", i, mc);
 702                         goto ack;
 703                 }
 704
 705                 or = i;
 706         }
 707
 708         for (i = 0; type == OUTPUT_ANY && i < nv50_sor_nr(dev); i++) {
 709                 if (dev_priv->chipset  < 0x90 ||
 710                     dev_priv->chipset == 0x92 ||
 711                     dev_priv->chipset == 0xa0)
 712                         mc = nv_rd32(dev, NV50_PDISPLAY_SOR_MODE_CTRL_C(i));
 713                 else
 714                         mc = nv_rd32(dev, NV90_PDISPLAY_SOR_MODE_CTRL_C(i));
 715
 716                 NV_DEBUG_KMS(dev, "SOR-%d mc: 0x%08x\n", i, mc);
 717                 if (!(mc & (1 << crtc)))
 718                         continue;
 719
 720                 switch ((mc & 0x00000f00) >> 8) {
 721                 case 0: type = OUTPUT_LVDS; break;
 722                 case 1: type = OUTPUT_TMDS; break;
 723                 case 2: type = OUTPUT_TMDS; break;
 724                 case 5: type = OUTPUT_TMDS; break;
 725                 case 8: type = OUTPUT_DP; break;
 726                 case 9: type = OUTPUT_DP; break;
 727                 default:
 728                         NV_ERROR(dev, "invalid mc, SOR-%d: 0x%08x\n", i, mc);
 729                         goto ack;
 730                 }
 731
 732                 or = i;
 733         }
 734
 735         /* There was no encoder to disable */
 736         if (type == OUTPUT_ANY)
 737                 goto ack;
 738
 739         /* Disable the encoder */
 740         for (i = 0; i < dev_priv->vbios.dcb.entries; i++) {
 741                 struct dcb_entry *dcb = &dev_priv->vbios.dcb.entry[i];
 742
 743                 if (dcb->type == type && (dcb->or & (1 << or))) {
 744                         nouveau_bios_run_display_table(dev, 0, -1, dcb, -1);
 745                         disp->irq.dcb = dcb;
 746                         goto ack;
 747                 }
 748         }
 749
 750         NV_ERROR(dev, "no dcb for %d %d 0x%08x\n", or, type, mc);
 751 ack:
 752         nv_wr32(dev, NV50_PDISPLAY_INTR_1, NV50_PDISPLAY_INTR_1_CLK_UNK10);
 753         nv_wr32(dev, 0x610030, 0x80000000);
 754 }
 755
 756 static void
 757 nv50_display_unk20_handler(struct drm_device *dev)
 758 {
 759         struct drm_nouveau_private *dev_priv = dev->dev_private;
 760         struct nv50_display *disp = nv50_display(dev);
 761         u32 unk30 = nv_rd32(dev, 0x610030), tmp, pclk, script, mc = 0;
 762         struct dcb_entry *dcb;
 763         int i, crtc, or = 0, type = OUTPUT_ANY;
 764
 765         NV_DEBUG_KMS(dev, "0x610030: 0x%08x\n", unk30);
 766         dcb = disp->irq.dcb;
 767         if (dcb) {
 768                 nouveau_bios_run_display_table(dev, 0, -2, dcb, -1);
 769                 disp->irq.dcb = NULL;
 770         }
 771
 772         /* CRTC clock change requested? */
 773         crtc = ffs((unk30 & 0x00000600) >> 9) - 1;
 774         if (crtc >= 0) {
 775                 pclk  = nv_rd32(dev, NV50_PDISPLAY_CRTC_P(crtc, CLOCK));
 776                 pclk &= 0x003fffff;
 777                 if (pclk)
 778                         nv50_crtc_set_clock(dev, crtc, pclk);
 779
 780                 tmp = nv_rd32(dev, NV50_PDISPLAY_CRTC_CLK_CTRL2(crtc));
 781                 tmp &= ~0x000000f;
 782                 nv_wr32(dev, NV50_PDISPLAY_CRTC_CLK_CTRL2(crtc), tmp);
 783         }
 784
 785         /* Nothing needs to be done for the encoder */
 786         crtc = ffs((unk30 & 0x00000180) >> 7) - 1;
 787         if (crtc < 0)
 788                 goto ack;
 789         pclk  = nv_rd32(dev, NV50_PDISPLAY_CRTC_P(crtc, CLOCK)) & 0x003fffff;
 790
 791         /* Find which encoder is connected to the CRTC */
 792         for (i = 0; type == OUTPUT_ANY && i < 3; i++) {
 793                 mc = nv_rd32(dev, NV50_PDISPLAY_DAC_MODE_CTRL_P(i));
 794                 NV_DEBUG_KMS(dev, "DAC-%d mc: 0x%08x\n", i, mc);
 795                 if (!(mc & (1 << crtc)))
 796                         continue;
 797
 798                 switch ((mc & 0x00000f00) >> 8) {
 799                 case 0: type = OUTPUT_ANALOG; break;
 800                 case 1: type = OUTPUT_TV; break;
 801                 default:
 802                         NV_ERROR(dev, "invalid mc, DAC-%d: 0x%08x\n", i, mc);
 803                         goto ack;
 804                 }
 805
 806                 or = i;
 807         }
 808
 809         for (i = 0; type == OUTPUT_ANY && i < nv50_sor_nr(dev); i++) {
 810                 if (dev_priv->chipset  < 0x90 ||
 811                     dev_priv->chipset == 0x92 ||
 812                     dev_priv->chipset == 0xa0)
 813                         mc = nv_rd32(dev, NV50_PDISPLAY_SOR_MODE_CTRL_P(i));
 814                 else
 815                         mc = nv_rd32(dev, NV90_PDISPLAY_SOR_MODE_CTRL_P(i));
 816
 817                 NV_DEBUG_KMS(dev, "SOR-%d mc: 0x%08x\n", i, mc);
 818                 if (!(mc & (1 << crtc)))
 819                         continue;
 820
 821                 switch ((mc & 0x00000f00) >> 8) {
 822                 case 0: type = OUTPUT_LVDS; break;
 823                 case 1: type = OUTPUT_TMDS; break;
 824                 case 2: type = OUTPUT_TMDS; break;
 825                 case 5: type = OUTPUT_TMDS; break;
 826                 case 8: type = OUTPUT_DP; break;
 827                 case 9: type = OUTPUT_DP; break;
 828                 default:
 829                         NV_ERROR(dev, "invalid mc, SOR-%d: 0x%08x\n", i, mc);
 830                         goto ack;
 831                 }
 832
 833                 or = i;
 834         }
 835
 836         if (type == OUTPUT_ANY)
 837                 goto ack;
 838
 839         /* Enable the encoder */
 840         for (i = 0; i < dev_priv->vbios.dcb.entries; i++) {
 841                 dcb = &dev_priv->vbios.dcb.entry[i];
 842                 if (dcb->type == type && (dcb->or & (1 << or)))
 843                         break;
 844         }
 845
 846         if (i == dev_priv->vbios.dcb.entries) {
 847                 NV_ERROR(dev, "no dcb for %d %d 0x%08x\n", or, type, mc);
 848                 goto ack;
 849         }
 850
 851         script = nv50_display_script_select(dev, dcb, mc, pclk);
 852         nouveau_bios_run_display_table(dev, script, pclk, dcb, -1);
 853
 854         if (type == OUTPUT_DP) {
 855                 int link = !(dcb->dpconf.sor.link & 1);
 856                 if ((mc & 0x000f0000) == 0x00020000)
 857                         nv50_sor_dp_calc_tu(dev, or, link, pclk, 18);
 858                 else
 859                         nv50_sor_dp_calc_tu(dev, or, link, pclk, 24);
 860         }
 861
 862         if (dcb->type != OUTPUT_ANALOG) {
 863                 tmp = nv_rd32(dev, NV50_PDISPLAY_SOR_CLK_CTRL2(or));
 864                 tmp &= ~0x00000f0f;
 865                 if (script & 0x0100)
 866                         tmp |= 0x00000101;
 867                 nv_wr32(dev, NV50_PDISPLAY_SOR_CLK_CTRL2(or), tmp);
 868         } else {
 869                 nv_wr32(dev, NV50_PDISPLAY_DAC_CLK_CTRL2(or), 0);
 870         }
 871
 872         disp->irq.dcb = dcb;
 873         disp->irq.pclk = pclk;
 874         disp->irq.script = script;
 875
 876 ack:
 877         nv_wr32(dev, NV50_PDISPLAY_INTR_1, NV50_PDISPLAY_INTR_1_CLK_UNK20);
 878         nv_wr32(dev, 0x610030, 0x80000000);
 879 }
 880
 881 /* If programming a TMDS output on a SOR that can also be configured for
 882  * DisplayPort, make sure NV50_SOR_DP_CTRL_ENABLE is forced off.
 883  *
 884  * It looks like the VBIOS TMDS scripts make an attempt at this, however,
 885  * the VBIOS scripts on at least one board I have only switch it off on
 886  * link 0, causing a blank display if the output has previously been
 887  * programmed for DisplayPort.
 888  */
 889 static void
 890 nv50_display_unk40_dp_set_tmds(struct drm_device *dev, struct dcb_entry *dcb)
 891 {
 892         int or = ffs(dcb->or) - 1, link = !(dcb->dpconf.sor.link & 1);
 893         struct drm_encoder *encoder;
 894         u32 tmp;
 895
 896         if (dcb->type != OUTPUT_TMDS)
 897                 return;
 898
 899         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 900                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
 901
 902                 if (nv_encoder->dcb->type == OUTPUT_DP &&
 903                     nv_encoder->dcb->or & (1 << or)) {
 904                         tmp  = nv_rd32(dev, NV50_SOR_DP_CTRL(or, link));
 905                         tmp &= ~NV50_SOR_DP_CTRL_ENABLED;
 906                         nv_wr32(dev, NV50_SOR_DP_CTRL(or, link), tmp);
 907                         break;
 908                 }
 909         }
 910 }
 911
 912 static void
 913 nv50_display_unk40_handler(struct drm_device *dev)
 914 {
 915         struct nv50_display *disp = nv50_display(dev);
 916         struct dcb_entry *dcb = disp->irq.dcb;
 917         u16 script = disp->irq.script;
 918         u32 unk30 = nv_rd32(dev, 0x610030), pclk = disp->irq.pclk;
 919
 920         NV_DEBUG_KMS(dev, "0x610030: 0x%08x\n", unk30);
 921         disp->irq.dcb = NULL;
 922         if (!dcb)
 923                 goto ack;
 924
 925         nouveau_bios_run_display_table(dev, script, -pclk, dcb, -1);
 926         nv50_display_unk40_dp_set_tmds(dev, dcb);
 927
 928 ack:
 929         nv_wr32(dev, NV50_PDISPLAY_INTR_1, NV50_PDISPLAY_INTR_1_CLK_UNK40);
 930         nv_wr32(dev, 0x610030, 0x80000000);
 931         nv_wr32(dev, 0x619494, nv_rd32(dev, 0x619494) | 8);
 932 }
 933
 934 static void
 935 nv50_display_bh(unsigned long data)
 936 {
 937         struct drm_device *dev = (struct drm_device *)data;
 938
 939         for (;;) {
 940                 uint32_t intr0 = nv_rd32(dev, NV50_PDISPLAY_INTR_0);
 941                 uint32_t intr1 = nv_rd32(dev, NV50_PDISPLAY_INTR_1);
 942
 943                 NV_DEBUG_KMS(dev, "PDISPLAY_INTR_BH 0x%08x 0x%08x\n", intr0, intr1);
 944
 945                 if (intr1 & NV50_PDISPLAY_INTR_1_CLK_UNK10)
 946                         nv50_display_unk10_handler(dev);
 947                 else
 948                 if (intr1 & NV50_PDISPLAY_INTR_1_CLK_UNK20)
 949                         nv50_display_unk20_handler(dev);
 950                 else
 951                 if (intr1 & NV50_PDISPLAY_INTR_1_CLK_UNK40)
 952                         nv50_display_unk40_handler(dev);
 953                 else
 954                         break;
 955         }
 956
 957         nv_wr32(dev, NV03_PMC_INTR_EN_0, 1);
 958 }
 959
 960 static void
 961 nv50_display_error_handler(struct drm_device *dev)
 962 {
 963         u32 channels = (nv_rd32(dev, NV50_PDISPLAY_INTR_0) & 0x001f0000) >> 16;
 964         u32 addr, data;
 965         int chid;
 966
 967         for (chid = 0; chid < 5; chid++) {
 968                 if (!(channels & (1 << chid)))
 969                         continue;
 970
 971                 nv_wr32(dev, NV50_PDISPLAY_INTR_0, 0x00010000 << chid);
 972                 addr = nv_rd32(dev, NV50_PDISPLAY_TRAPPED_ADDR(chid));
 973                 data = nv_rd32(dev, NV50_PDISPLAY_TRAPPED_DATA(chid));
 974                 NV_ERROR(dev, "EvoCh %d Mthd 0x%04x Data 0x%08x "
 975                               "(0x%04x 0x%02x)\n", chid,
 976                          addr & 0xffc, data, addr >> 16, (addr >> 12) & 0xf);
 977
 978                 nv_wr32(dev, NV50_PDISPLAY_TRAPPED_ADDR(chid), 0x90000000);
 979         }
 980 }
 981
 982 static void
 983 nv50_display_isr(struct drm_device *dev)
 984 {
 985         struct nv50_display *disp = nv50_display(dev);
 986         uint32_t delayed = 0;
 987
 988         while (nv_rd32(dev, NV50_PMC_INTR_0) & NV50_PMC_INTR_0_DISPLAY) {
 989                 uint32_t intr0 = nv_rd32(dev, NV50_PDISPLAY_INTR_0);
 990                 uint32_t intr1 = nv_rd32(dev, NV50_PDISPLAY_INTR_1);
 991                 uint32_t clock;
 992
 993                 NV_DEBUG_KMS(dev, "PDISPLAY_INTR 0x%08x 0x%08x\n", intr0, intr1);
 994
 995                 if (!intr0 && !(intr1 & ~delayed))
 996                         break;
 997
 998                 if (intr0 & 0x001f0000) {
 999                         nv50_display_error_handler(dev);
1000                         intr0 &= ~0x001f0000;
1001                 }
1002
1003                 if (intr1 & NV50_PDISPLAY_INTR_1_VBLANK_CRTC) {
1004                         nv50_display_vblank_handler(dev, intr1);
1005                         intr1 &= ~NV50_PDISPLAY_INTR_1_VBLANK_CRTC;
1006                 }
1007
1008                 clock = (intr1 & (NV50_PDISPLAY_INTR_1_CLK_UNK10 |
1009                                   NV50_PDISPLAY_INTR_1_CLK_UNK20 |
1010                                   NV50_PDISPLAY_INTR_1_CLK_UNK40));
1011                 if (clock) {
1012                         nv_wr32(dev, NV03_PMC_INTR_EN_0, 0);
1013                         tasklet_schedule(&disp->tasklet);
1014                         delayed |= clock;
1015                         intr1 &= ~clock;
1016                 }
1017
1018                 if (intr0) {
1019                         NV_ERROR(dev, "unknown PDISPLAY_INTR_0: 0x%08x\n", intr0);
1020                         nv_wr32(dev, NV50_PDISPLAY_INTR_0, intr0);
1021                 }
1022
1023                 if (intr1) {
1024                         NV_ERROR(dev,
1025                                  "unknown PDISPLAY_INTR_1: 0x%08x\n", intr1);
1026                         nv_wr32(dev, NV50_PDISPLAY_INTR_1, intr1);
1027                 }
1028         }
1029 }