linux/drivers/gpu/drm/nouveau/nouveau_display.c
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   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#include <drm/drmP.h>
  28#include <drm/drm_crtc_helper.h>
  29
  30#include "nouveau_fbcon.h"
  31#include "nouveau_hw.h"
  32#include "nouveau_crtc.h"
  33#include "nouveau_dma.h"
  34#include "nouveau_gem.h"
  35#include "nouveau_connector.h"
  36#include "nv50_display.h"
  37
  38#include "nouveau_fence.h"
  39
  40#include <subdev/bios/gpio.h>
  41#include <subdev/gpio.h>
  42#include <engine/disp.h>
  43
  44static void
  45nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb)
  46{
  47        struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
  48
  49        if (fb->nvbo)
  50                drm_gem_object_unreference_unlocked(fb->nvbo->gem);
  51
  52        drm_framebuffer_cleanup(drm_fb);
  53        kfree(fb);
  54}
  55
  56static int
  57nouveau_user_framebuffer_create_handle(struct drm_framebuffer *drm_fb,
  58                                       struct drm_file *file_priv,
  59                                       unsigned int *handle)
  60{
  61        struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
  62
  63        return drm_gem_handle_create(file_priv, fb->nvbo->gem, handle);
  64}
  65
  66static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
  67        .destroy = nouveau_user_framebuffer_destroy,
  68        .create_handle = nouveau_user_framebuffer_create_handle,
  69};
  70
  71int
  72nouveau_framebuffer_init(struct drm_device *dev,
  73                         struct nouveau_framebuffer *nv_fb,
  74                         struct drm_mode_fb_cmd2 *mode_cmd,
  75                         struct nouveau_bo *nvbo)
  76{
  77        struct nouveau_drm *drm = nouveau_drm(dev);
  78        struct drm_framebuffer *fb = &nv_fb->base;
  79        int ret;
  80
  81        ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
  82        if (ret) {
  83                return ret;
  84        }
  85
  86        drm_helper_mode_fill_fb_struct(fb, mode_cmd);
  87        nv_fb->nvbo = nvbo;
  88
  89        if (nv_device(drm->device)->card_type >= NV_50) {
  90                u32 tile_flags = nouveau_bo_tile_layout(nvbo);
  91                if (tile_flags == 0x7a00 ||
  92                    tile_flags == 0xfe00)
  93                        nv_fb->r_dma = NvEvoFB32;
  94                else
  95                if (tile_flags == 0x7000)
  96                        nv_fb->r_dma = NvEvoFB16;
  97                else
  98                        nv_fb->r_dma = NvEvoVRAM_LP;
  99
 100                switch (fb->depth) {
 101                case  8: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_8; break;
 102                case 15: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_15; break;
 103                case 16: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_16; break;
 104                case 24:
 105                case 32: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_24; break;
 106                case 30: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_30; break;
 107                default:
 108                         NV_ERROR(drm, "unknown depth %d\n", fb->depth);
 109                         return -EINVAL;
 110                }
 111
 112                if (nv_device(drm->device)->chipset == 0x50)
 113                        nv_fb->r_format |= (tile_flags << 8);
 114
 115                if (!tile_flags) {
 116                        if (nv_device(drm->device)->card_type < NV_D0)
 117                                nv_fb->r_pitch = 0x00100000 | fb->pitches[0];
 118                        else
 119                                nv_fb->r_pitch = 0x01000000 | fb->pitches[0];
 120                } else {
 121                        u32 mode = nvbo->tile_mode;
 122                        if (nv_device(drm->device)->card_type >= NV_C0)
 123                                mode >>= 4;
 124                        nv_fb->r_pitch = ((fb->pitches[0] / 4) << 4) | mode;
 125                }
 126        }
 127
 128        return 0;
 129}
 130
 131static struct drm_framebuffer *
 132nouveau_user_framebuffer_create(struct drm_device *dev,
 133                                struct drm_file *file_priv,
 134                                struct drm_mode_fb_cmd2 *mode_cmd)
 135{
 136        struct nouveau_framebuffer *nouveau_fb;
 137        struct drm_gem_object *gem;
 138        int ret;
 139
 140        gem = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
 141        if (!gem)
 142                return ERR_PTR(-ENOENT);
 143
 144        nouveau_fb = kzalloc(sizeof(struct nouveau_framebuffer), GFP_KERNEL);
 145        if (!nouveau_fb)
 146                return ERR_PTR(-ENOMEM);
 147
 148        ret = nouveau_framebuffer_init(dev, nouveau_fb, mode_cmd, nouveau_gem_object(gem));
 149        if (ret) {
 150                drm_gem_object_unreference(gem);
 151                return ERR_PTR(ret);
 152        }
 153
 154        return &nouveau_fb->base;
 155}
 156
 157static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
 158        .fb_create = nouveau_user_framebuffer_create,
 159        .output_poll_changed = nouveau_fbcon_output_poll_changed,
 160};
 161
 162
 163struct nouveau_drm_prop_enum_list {
 164        u8 gen_mask;
 165        int type;
 166        char *name;
 167};
 168
 169static struct nouveau_drm_prop_enum_list underscan[] = {
 170        { 6, UNDERSCAN_AUTO, "auto" },
 171        { 6, UNDERSCAN_OFF, "off" },
 172        { 6, UNDERSCAN_ON, "on" },
 173        {}
 174};
 175
 176static struct nouveau_drm_prop_enum_list dither_mode[] = {
 177        { 7, DITHERING_MODE_AUTO, "auto" },
 178        { 7, DITHERING_MODE_OFF, "off" },
 179        { 1, DITHERING_MODE_ON, "on" },
 180        { 6, DITHERING_MODE_STATIC2X2, "static 2x2" },
 181        { 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" },
 182        { 4, DITHERING_MODE_TEMPORAL, "temporal" },
 183        {}
 184};
 185
 186static struct nouveau_drm_prop_enum_list dither_depth[] = {
 187        { 6, DITHERING_DEPTH_AUTO, "auto" },
 188        { 6, DITHERING_DEPTH_6BPC, "6 bpc" },
 189        { 6, DITHERING_DEPTH_8BPC, "8 bpc" },
 190        {}
 191};
 192
 193#define PROP_ENUM(p,gen,n,list) do {                                           \
 194        struct nouveau_drm_prop_enum_list *l = (list);                         \
 195        int c = 0;                                                             \
 196        while (l->gen_mask) {                                                  \
 197                if (l->gen_mask & (1 << (gen)))                                \
 198                        c++;                                                   \
 199                l++;                                                           \
 200        }                                                                      \
 201        if (c) {                                                               \
 202                p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c);        \
 203                l = (list);                                                    \
 204                c = 0;                                                         \
 205                while (p && l->gen_mask) {                                     \
 206                        if (l->gen_mask & (1 << (gen))) {                      \
 207                                drm_property_add_enum(p, c, l->type, l->name); \
 208                                c++;                                           \
 209                        }                                                      \
 210                        l++;                                                   \
 211                }                                                              \
 212        }                                                                      \
 213} while(0)
 214
 215int
 216nouveau_display_init(struct drm_device *dev)
 217{
 218        struct nouveau_drm *drm = nouveau_drm(dev);
 219        struct nouveau_display *disp = nouveau_display(dev);
 220        struct nouveau_gpio *gpio = nouveau_gpio(drm->device);
 221        struct drm_connector *connector;
 222        int ret;
 223
 224        ret = disp->init(dev);
 225        if (ret)
 226                return ret;
 227
 228        /* power on internal panel if it's not already.  the init tables of
 229         * some vbios default this to off for some reason, causing the
 230         * panel to not work after resume
 231         */
 232        if (gpio && gpio->get(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff) == 0) {
 233                gpio->set(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff, 1);
 234                msleep(300);
 235        }
 236
 237        /* enable polling for external displays */
 238        drm_kms_helper_poll_enable(dev);
 239
 240        /* enable hotplug interrupts */
 241        list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 242                struct nouveau_connector *conn = nouveau_connector(connector);
 243                if (gpio)
 244                        gpio->irq(gpio, 0, conn->hpd, 0xff, true);
 245        }
 246
 247        return ret;
 248}
 249
 250void
 251nouveau_display_fini(struct drm_device *dev)
 252{
 253        struct nouveau_drm *drm = nouveau_drm(dev);
 254        struct nouveau_display *disp = nouveau_display(dev);
 255        struct nouveau_gpio *gpio = nouveau_gpio(drm->device);
 256        struct drm_connector *connector;
 257
 258        /* disable hotplug interrupts */
 259        list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 260                struct nouveau_connector *conn = nouveau_connector(connector);
 261                if (gpio)
 262                        gpio->irq(gpio, 0, conn->hpd, 0xff, false);
 263        }
 264
 265        drm_kms_helper_poll_disable(dev);
 266        disp->fini(dev);
 267}
 268
 269static void
 270nouveau_display_vblank_notify(void *data, int crtc)
 271{
 272        drm_handle_vblank(data, crtc);
 273}
 274
 275static void
 276nouveau_display_vblank_get(void *data, int crtc)
 277{
 278        drm_vblank_get(data, crtc);
 279}
 280
 281static void
 282nouveau_display_vblank_put(void *data, int crtc)
 283{
 284        drm_vblank_put(data, crtc);
 285}
 286
 287int
 288nouveau_display_create(struct drm_device *dev)
 289{
 290        struct nouveau_drm *drm = nouveau_drm(dev);
 291        struct nouveau_disp *pdisp = nouveau_disp(drm->device);
 292        struct nouveau_display *disp;
 293        u32 pclass = dev->pdev->class >> 8;
 294        int ret, gen;
 295
 296        disp = drm->display = kzalloc(sizeof(*disp), GFP_KERNEL);
 297        if (!disp)
 298                return -ENOMEM;
 299
 300        pdisp->vblank.data = dev;
 301        pdisp->vblank.notify = nouveau_display_vblank_notify;
 302        pdisp->vblank.get = nouveau_display_vblank_get;
 303        pdisp->vblank.put = nouveau_display_vblank_put;
 304
 305        drm_mode_config_init(dev);
 306        drm_mode_create_scaling_mode_property(dev);
 307        drm_mode_create_dvi_i_properties(dev);
 308
 309        if (nv_device(drm->device)->card_type < NV_50)
 310                gen = 0;
 311        else
 312        if (nv_device(drm->device)->card_type < NV_D0)
 313                gen = 1;
 314        else
 315                gen = 2;
 316
 317        PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
 318        PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
 319        PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);
 320
 321        disp->underscan_hborder_property =
 322                drm_property_create_range(dev, 0, "underscan hborder", 0, 128);
 323
 324        disp->underscan_vborder_property =
 325                drm_property_create_range(dev, 0, "underscan vborder", 0, 128);
 326
 327        if (gen == 1) {
 328                disp->vibrant_hue_property =
 329                        drm_property_create(dev, DRM_MODE_PROP_RANGE,
 330                                            "vibrant hue", 2);
 331                disp->vibrant_hue_property->values[0] = 0;
 332                disp->vibrant_hue_property->values[1] = 180; /* -90..+90 */
 333
 334                disp->color_vibrance_property =
 335                        drm_property_create(dev, DRM_MODE_PROP_RANGE,
 336                                            "color vibrance", 2);
 337                disp->color_vibrance_property->values[0] = 0;
 338                disp->color_vibrance_property->values[1] = 200; /* -100..+100 */
 339        }
 340
 341        dev->mode_config.funcs = &nouveau_mode_config_funcs;
 342        dev->mode_config.fb_base = pci_resource_start(dev->pdev, 1);
 343
 344        dev->mode_config.min_width = 0;
 345        dev->mode_config.min_height = 0;
 346        if (nv_device(drm->device)->card_type < NV_10) {
 347                dev->mode_config.max_width = 2048;
 348                dev->mode_config.max_height = 2048;
 349        } else
 350        if (nv_device(drm->device)->card_type < NV_50) {
 351                dev->mode_config.max_width = 4096;
 352                dev->mode_config.max_height = 4096;
 353        } else {
 354                dev->mode_config.max_width = 8192;
 355                dev->mode_config.max_height = 8192;
 356        }
 357
 358        dev->mode_config.preferred_depth = 24;
 359        dev->mode_config.prefer_shadow = 1;
 360
 361        drm_kms_helper_poll_init(dev);
 362        drm_kms_helper_poll_disable(dev);
 363
 364        if (nouveau_modeset == 1 ||
 365            (nouveau_modeset < 0 && pclass == PCI_CLASS_DISPLAY_VGA)) {
 366                if (nv_device(drm->device)->card_type < NV_50)
 367                        ret = nv04_display_create(dev);
 368                else
 369                if (nv_device(drm->device)->card_type < NV_D0)
 370                        ret = nv50_display_create(dev);
 371                else
 372                        ret = nvd0_display_create(dev);
 373                if (ret)
 374                        goto disp_create_err;
 375
 376                if (dev->mode_config.num_crtc) {
 377                        ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
 378                        if (ret)
 379                                goto vblank_err;
 380                }
 381
 382                nouveau_backlight_init(dev);
 383        }
 384
 385        return 0;
 386
 387vblank_err:
 388        disp->dtor(dev);
 389disp_create_err:
 390        drm_kms_helper_poll_fini(dev);
 391        drm_mode_config_cleanup(dev);
 392        return ret;
 393}
 394
 395void
 396nouveau_display_destroy(struct drm_device *dev)
 397{
 398        struct nouveau_display *disp = nouveau_display(dev);
 399
 400        nouveau_backlight_exit(dev);
 401        drm_vblank_cleanup(dev);
 402
 403        if (disp->dtor)
 404                disp->dtor(dev);
 405
 406        drm_kms_helper_poll_fini(dev);
 407        drm_mode_config_cleanup(dev);
 408        nouveau_drm(dev)->display = NULL;
 409        kfree(disp);
 410}
 411
 412int
 413nouveau_display_suspend(struct drm_device *dev)
 414{
 415        struct nouveau_drm *drm = nouveau_drm(dev);
 416        struct drm_crtc *crtc;
 417
 418        nouveau_display_fini(dev);
 419
 420        NV_INFO(drm, "unpinning framebuffer(s)...\n");
 421        list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 422                struct nouveau_framebuffer *nouveau_fb;
 423
 424                nouveau_fb = nouveau_framebuffer(crtc->fb);
 425                if (!nouveau_fb || !nouveau_fb->nvbo)
 426                        continue;
 427
 428                nouveau_bo_unpin(nouveau_fb->nvbo);
 429        }
 430
 431        list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 432                struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 433
 434                nouveau_bo_unmap(nv_crtc->cursor.nvbo);
 435                nouveau_bo_unpin(nv_crtc->cursor.nvbo);
 436        }
 437
 438        return 0;
 439}
 440
 441void
 442nouveau_display_resume(struct drm_device *dev)
 443{
 444        struct nouveau_drm *drm = nouveau_drm(dev);
 445        struct drm_crtc *crtc;
 446        int ret;
 447
 448        list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 449                struct nouveau_framebuffer *nouveau_fb;
 450
 451                nouveau_fb = nouveau_framebuffer(crtc->fb);
 452                if (!nouveau_fb || !nouveau_fb->nvbo)
 453                        continue;
 454
 455                nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM);
 456        }
 457
 458        list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 459                struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 460
 461                ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM);
 462                if (!ret)
 463                        ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
 464                if (ret)
 465                        NV_ERROR(drm, "Could not pin/map cursor.\n");
 466        }
 467
 468        nouveau_fbcon_set_suspend(dev, 0);
 469        nouveau_fbcon_zfill_all(dev);
 470
 471        nouveau_display_init(dev);
 472
 473        /* Force CLUT to get re-loaded during modeset */
 474        list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 475                struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 476
 477                nv_crtc->lut.depth = 0;
 478        }
 479
 480        drm_helper_resume_force_mode(dev);
 481
 482        list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 483                struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 484                u32 offset = nv_crtc->cursor.nvbo->bo.offset;
 485
 486                nv_crtc->cursor.set_offset(nv_crtc, offset);
 487                nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
 488                                                 nv_crtc->cursor_saved_y);
 489        }
 490}
 491
 492int
 493nouveau_vblank_enable(struct drm_device *dev, int crtc)
 494{
 495        struct nouveau_device *device = nouveau_dev(dev);
 496
 497        if (device->card_type >= NV_D0)
 498                nv_mask(device, 0x6100c0 + (crtc * 0x800), 1, 1);
 499        else
 500        if (device->card_type >= NV_50)
 501                nv_mask(device, NV50_PDISPLAY_INTR_EN_1, 0,
 502                        NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc));
 503        else
 504                NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0,
 505                            NV_PCRTC_INTR_0_VBLANK);
 506
 507        return 0;
 508}
 509
 510void
 511nouveau_vblank_disable(struct drm_device *dev, int crtc)
 512{
 513        struct nouveau_device *device = nouveau_dev(dev);
 514
 515        if (device->card_type >= NV_D0)
 516                nv_mask(device, 0x6100c0 + (crtc * 0x800), 1, 0);
 517        else
 518        if (device->card_type >= NV_50)
 519                nv_mask(device, NV50_PDISPLAY_INTR_EN_1,
 520                        NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc), 0);
 521        else
 522                NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0, 0);
 523}
 524
 525static int
 526nouveau_page_flip_reserve(struct nouveau_bo *old_bo,
 527                          struct nouveau_bo *new_bo)
 528{
 529        int ret;
 530
 531        ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM);
 532        if (ret)
 533                return ret;
 534
 535        ret = ttm_bo_reserve(&new_bo->bo, false, false, false, 0);
 536        if (ret)
 537                goto fail;
 538
 539        if (likely(old_bo != new_bo)) {
 540                ret = ttm_bo_reserve(&old_bo->bo, false, false, false, 0);
 541                if (ret)
 542                        goto fail_unreserve;
 543        }
 544
 545        return 0;
 546
 547fail_unreserve:
 548        ttm_bo_unreserve(&new_bo->bo);
 549fail:
 550        nouveau_bo_unpin(new_bo);
 551        return ret;
 552}
 553
 554static void
 555nouveau_page_flip_unreserve(struct nouveau_bo *old_bo,
 556                            struct nouveau_bo *new_bo,
 557                            struct nouveau_fence *fence)
 558{
 559        nouveau_bo_fence(new_bo, fence);
 560        ttm_bo_unreserve(&new_bo->bo);
 561
 562        if (likely(old_bo != new_bo)) {
 563                nouveau_bo_fence(old_bo, fence);
 564                ttm_bo_unreserve(&old_bo->bo);
 565        }
 566
 567        nouveau_bo_unpin(old_bo);
 568}
 569
 570static int
 571nouveau_page_flip_emit(struct nouveau_channel *chan,
 572                       struct nouveau_bo *old_bo,
 573                       struct nouveau_bo *new_bo,
 574                       struct nouveau_page_flip_state *s,
 575                       struct nouveau_fence **pfence)
 576{
 577        struct nouveau_fence_chan *fctx = chan->fence;
 578        struct nouveau_drm *drm = chan->drm;
 579        struct drm_device *dev = drm->dev;
 580        unsigned long flags;
 581        int ret;
 582
 583        /* Queue it to the pending list */
 584        spin_lock_irqsave(&dev->event_lock, flags);
 585        list_add_tail(&s->head, &fctx->flip);
 586        spin_unlock_irqrestore(&dev->event_lock, flags);
 587
 588        /* Synchronize with the old framebuffer */
 589        ret = nouveau_fence_sync(old_bo->bo.sync_obj, chan);
 590        if (ret)
 591                goto fail;
 592
 593        /* Emit the pageflip */
 594        ret = RING_SPACE(chan, 3);
 595        if (ret)
 596                goto fail;
 597
 598        if (nv_device(drm->device)->card_type < NV_C0) {
 599                BEGIN_NV04(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
 600                OUT_RING  (chan, 0x00000000);
 601                OUT_RING  (chan, 0x00000000);
 602        } else {
 603                BEGIN_NVC0(chan, 0, NV10_SUBCHAN_REF_CNT, 1);
 604                OUT_RING  (chan, 0);
 605                BEGIN_IMC0(chan, 0, NVSW_SUBCHAN_PAGE_FLIP, 0x0000);
 606        }
 607        FIRE_RING (chan);
 608
 609        ret = nouveau_fence_new(chan, pfence);
 610        if (ret)
 611                goto fail;
 612
 613        return 0;
 614fail:
 615        spin_lock_irqsave(&dev->event_lock, flags);
 616        list_del(&s->head);
 617        spin_unlock_irqrestore(&dev->event_lock, flags);
 618        return ret;
 619}
 620
 621int
 622nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 623                       struct drm_pending_vblank_event *event)
 624{
 625        struct drm_device *dev = crtc->dev;
 626        struct nouveau_drm *drm = nouveau_drm(dev);
 627        struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->fb)->nvbo;
 628        struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
 629        struct nouveau_page_flip_state *s;
 630        struct nouveau_channel *chan = NULL;
 631        struct nouveau_fence *fence;
 632        int ret;
 633
 634        if (!drm->channel)
 635                return -ENODEV;
 636
 637        s = kzalloc(sizeof(*s), GFP_KERNEL);
 638        if (!s)
 639                return -ENOMEM;
 640
 641        /* Don't let the buffers go away while we flip */
 642        ret = nouveau_page_flip_reserve(old_bo, new_bo);
 643        if (ret)
 644                goto fail_free;
 645
 646        /* Initialize a page flip struct */
 647        *s = (struct nouveau_page_flip_state)
 648                { { }, event, nouveau_crtc(crtc)->index,
 649                  fb->bits_per_pixel, fb->pitches[0], crtc->x, crtc->y,
 650                  new_bo->bo.offset };
 651
 652        /* Choose the channel the flip will be handled in */
 653        fence = new_bo->bo.sync_obj;
 654        if (fence)
 655                chan = fence->channel;
 656        if (!chan)
 657                chan = drm->channel;
 658        mutex_lock(&chan->cli->mutex);
 659
 660        /* Emit a page flip */
 661        if (nv_device(drm->device)->card_type >= NV_50) {
 662                if (nv_device(drm->device)->card_type >= NV_D0)
 663                        ret = nvd0_display_flip_next(crtc, fb, chan, 0);
 664                else
 665                        ret = nv50_display_flip_next(crtc, fb, chan);
 666                if (ret) {
 667                        mutex_unlock(&chan->cli->mutex);
 668                        goto fail_unreserve;
 669                }
 670        }
 671
 672        ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
 673        mutex_unlock(&chan->cli->mutex);
 674        if (ret)
 675                goto fail_unreserve;
 676
 677        /* Update the crtc struct and cleanup */
 678        crtc->fb = fb;
 679
 680        nouveau_page_flip_unreserve(old_bo, new_bo, fence);
 681        nouveau_fence_unref(&fence);
 682        return 0;
 683
 684fail_unreserve:
 685        nouveau_page_flip_unreserve(old_bo, new_bo, NULL);
 686fail_free:
 687        kfree(s);
 688        return ret;
 689}
 690
 691int
 692nouveau_finish_page_flip(struct nouveau_channel *chan,
 693                         struct nouveau_page_flip_state *ps)
 694{
 695        struct nouveau_fence_chan *fctx = chan->fence;
 696        struct nouveau_drm *drm = chan->drm;
 697        struct drm_device *dev = drm->dev;
 698        struct nouveau_page_flip_state *s;
 699        unsigned long flags;
 700
 701        spin_lock_irqsave(&dev->event_lock, flags);
 702
 703        if (list_empty(&fctx->flip)) {
 704                NV_ERROR(drm, "unexpected pageflip\n");
 705                spin_unlock_irqrestore(&dev->event_lock, flags);
 706                return -EINVAL;
 707        }
 708
 709        s = list_first_entry(&fctx->flip, struct nouveau_page_flip_state, head);
 710        if (s->event) {
 711                struct drm_pending_vblank_event *e = s->event;
 712                struct timeval now;
 713
 714                do_gettimeofday(&now);
 715                e->event.sequence = 0;
 716                e->event.tv_sec = now.tv_sec;
 717                e->event.tv_usec = now.tv_usec;
 718                list_add_tail(&e->base.link, &e->base.file_priv->event_list);
 719                wake_up_interruptible(&e->base.file_priv->event_wait);
 720        }
 721
 722        list_del(&s->head);
 723        if (ps)
 724                *ps = *s;
 725        kfree(s);
 726
 727        spin_unlock_irqrestore(&dev->event_lock, flags);
 728        return 0;
 729}
 730
 731int
 732nouveau_flip_complete(void *data)
 733{
 734        struct nouveau_channel *chan = data;
 735        struct nouveau_drm *drm = chan->drm;
 736        struct nouveau_page_flip_state state;
 737
 738        if (!nouveau_finish_page_flip(chan, &state)) {
 739                if (nv_device(drm->device)->card_type < NV_50) {
 740                        nv_set_crtc_base(drm->dev, state.crtc, state.offset +
 741                                         state.y * state.pitch +
 742                                         state.x * state.bpp / 8);
 743                }
 744        }
 745
 746        return 0;
 747}
 748
 749int
 750nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
 751                            struct drm_mode_create_dumb *args)
 752{
 753        struct nouveau_bo *bo;
 754        int ret;
 755
 756        args->pitch = roundup(args->width * (args->bpp / 8), 256);
 757        args->size = args->pitch * args->height;
 758        args->size = roundup(args->size, PAGE_SIZE);
 759
 760        ret = nouveau_gem_new(dev, args->size, 0, NOUVEAU_GEM_DOMAIN_VRAM, 0, 0, &bo);
 761        if (ret)
 762                return ret;
 763
 764        ret = drm_gem_handle_create(file_priv, bo->gem, &args->handle);
 765        drm_gem_object_unreference_unlocked(bo->gem);
 766        return ret;
 767}
 768
 769int
 770nouveau_display_dumb_destroy(struct drm_file *file_priv, struct drm_device *dev,
 771                             uint32_t handle)
 772{
 773        return drm_gem_handle_delete(file_priv, handle);
 774}
 775
 776int
 777nouveau_display_dumb_map_offset(struct drm_file *file_priv,
 778                                struct drm_device *dev,
 779                                uint32_t handle, uint64_t *poffset)
 780{
 781        struct drm_gem_object *gem;
 782
 783        gem = drm_gem_object_lookup(dev, file_priv, handle);
 784        if (gem) {
 785                struct nouveau_bo *bo = gem->driver_private;
 786                *poffset = bo->bo.addr_space_offset;
 787                drm_gem_object_unreference_unlocked(gem);
 788                return 0;
 789        }
 790
 791        return -ENOENT;
 792}
 793