pscnv/nouveau_fbcon.c

   1 /*
   2  * Copyright © 2007 David Airlie
   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 (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *     David Airlie
  25  */
  26
  27 #ifdef __linux__
  28 #include <linux/module.h>
  29 #include <linux/kernel.h>
  30 #include <linux/errno.h>
  31 #include <linux/string.h>
  32 #include <linux/mm.h>
  33 #include <linux/tty.h>
  34 #include <linux/sysrq.h>
  35 #include <linux/delay.h>
  36 #include <linux/fb.h>
  37 #include <linux/init.h>
  38 #include <linux/screen_info.h>
  39 #include <linux/vga_switcheroo.h>
  40 #endif
  41
  42 #include "nouveau_drv.h"
  43 #include "drm.h"
  44 #include "drm_crtc.h"
  45 #include "drm_crtc_helper.h"
  46 #include "drm_fb_helper.h"
  47 #include "nouveau_crtc.h"
  48 #include "nouveau_fb.h"
  49 #include "nouveau_fbcon.h"
  50 #include "nouveau_dma.h"
  51 #include "pscnv_gem.h"
  52 #include "pscnv_vm.h"
  53 #include "pscnv_kapi.h"
  54
  55 #ifdef __linux__
  56
  57 static int
  58 nouveau_fbcon_sync(struct fb_info *info)
  59 {
  60 #if 0
  61         struct nouveau_fbdev *nfbdev = info->par;
  62         struct drm_device *dev = nfbdev->dev;
  63         struct drm_nouveau_private *dev_priv = dev->dev_private;
  64         struct nouveau_channel *chan = dev_priv->channel;
  65         int ret, i;
  66
  67         if (!chan || !chan->accel_done || in_interrupt() ||
  68             info->state != FBINFO_STATE_RUNNING ||
  69             info->flags & FBINFO_HWACCEL_DISABLED)
  70                 return 0;
  71
  72         if (!mutex_trylock(&chan->mutex))
  73                 return 0;
  74
  75         ret = RING_SPACE(chan, 4);
  76         if (ret) {
  77                 mutex_unlock(&chan->mutex);
  78                 nouveau_fbcon_gpu_lockup(info);
  79                 return 0;
  80         }
  81
  82         BEGIN_RING(chan, 0, 0x0104, 1);
  83         OUT_RING(chan, 0);
  84         BEGIN_RING(chan, 0, 0x0100, 1);
  85         OUT_RING(chan, 0);
  86         nouveau_bo_wr32(chan->notifier_bo, chan->m2mf_ntfy + 3, 0xffffffff);
  87         FIRE_RING(chan);
  88         mutex_unlock(&chan->mutex);
  89
  90         ret = -EBUSY;
  91         for (i = 0; i < 100000; i++) {
  92                 if (!nouveau_bo_rd32(chan->notifier_bo, chan->m2mf_ntfy + 3)) {
  93                         ret = 0;
  94                         break;
  95                 }
  96                 DRM_UDELAY(1);
  97         }
  98
  99         if (ret) {
 100                 nouveau_fbcon_gpu_lockup(info);
 101                 return 0;
 102         }
 103
 104         chan->accel_done = false;
 105 #endif
 106         return 0;
 107 }
 108
 109 static struct fb_ops nouveau_fbcon_ops = {
 110         .owner = THIS_MODULE,
 111         .fb_check_var = drm_fb_helper_check_var,
 112         .fb_set_par = drm_fb_helper_set_par,
 113         .fb_fillrect = cfb_fillrect,
 114         .fb_copyarea = cfb_copyarea,
 115         .fb_imageblit = cfb_imageblit,
 116         .fb_sync = nouveau_fbcon_sync,
 117         .fb_pan_display = drm_fb_helper_pan_display,
 118         .fb_blank = drm_fb_helper_blank,
 119         .fb_setcmap = drm_fb_helper_setcmap,
 120 };
 121 #if 0
 122 static struct fb_ops nv04_fbcon_ops = {
 123         .owner = THIS_MODULE,
 124         .fb_check_var = drm_fb_helper_check_var,
 125         .fb_set_par = drm_fb_helper_set_par,
 126         .fb_fillrect = nv04_fbcon_fillrect,
 127         .fb_copyarea = nv04_fbcon_copyarea,
 128         .fb_imageblit = nv04_fbcon_imageblit,
 129         .fb_sync = nouveau_fbcon_sync,
 130         .fb_pan_display = drm_fb_helper_pan_display,
 131         .fb_blank = drm_fb_helper_blank,
 132         .fb_setcmap = drm_fb_helper_setcmap,
 133 };
 134
 135 static struct fb_ops nv50_fbcon_ops = {
 136         .owner = THIS_MODULE,
 137         .fb_check_var = drm_fb_helper_check_var,
 138         .fb_set_par = drm_fb_helper_set_par,
 139         .fb_fillrect = nv50_fbcon_fillrect,
 140         .fb_copyarea = nv50_fbcon_copyarea,
 141         .fb_imageblit = nv50_fbcon_imageblit,
 142         .fb_sync = nouveau_fbcon_sync,
 143         .fb_pan_display = drm_fb_helper_pan_display,
 144         .fb_blank = drm_fb_helper_blank,
 145         .fb_setcmap = drm_fb_helper_setcmap,
 146 };
 147 #endif
 148
 149 #endif // __linux__
 150
 151 static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
 152                                     u16 blue, int regno)
 153 {
 154         struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 155
 156         nv_crtc->lut.r[regno] = red;
 157         nv_crtc->lut.g[regno] = green;
 158         nv_crtc->lut.b[regno] = blue;
 159 }
 160
 161 static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
 162                                     u16 *blue, int regno)
 163 {
 164         struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 165
 166         *red = nv_crtc->lut.r[regno];
 167         *green = nv_crtc->lut.g[regno];
 168         *blue = nv_crtc->lut.b[regno];
 169 }
 170
 171 static void
 172 nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *nfbdev)
 173 {
 174 #ifdef __linux__
 175         struct fb_info *info = nfbdev->helper.fbdev;
 176         struct fb_fillrect rect;
 177
 178         /* Clear the entire fbcon.  The drm will program every connector
 179          * with it's preferred mode.  If the sizes differ, one display will
 180          * quite likely have garbage around the console.
 181          */
 182         rect.dx = rect.dy = 0;
 183         rect.width = info->var.xres_virtual;
 184         rect.height = info->var.yres_virtual;
 185         rect.color = 0;
 186         rect.rop = ROP_COPY;
 187         info->fbops->fb_fillrect(info, &rect);
 188 #else
 189         WARN(1, "Missing!\n");
 190 #endif
 191 }
 192
 193 static int
 194 nouveau_fbcon_create(struct nouveau_fbdev *nfbdev,
 195                      struct drm_fb_helper_surface_size *sizes)
 196 {
 197         struct drm_device *dev = nfbdev->dev;
 198         struct drm_nouveau_private *dev_priv = dev->dev_private;
 199 #ifdef __linux__
 200         struct fb_info *info;
 201 #endif
 202         struct drm_framebuffer *fb;
 203         struct nouveau_framebuffer *nouveau_fb;
 204         struct pscnv_bo *nvbo;
 205         struct drm_gem_object *obj;
 206 #ifdef PSCNV_KAPI_DRM_MODE_FB_CMD2
 207         struct drm_mode_fb_cmd2 mode_cmd;
 208 #else
 209         struct drm_mode_fb_cmd mode_cmd;
 210 #endif
 211         int size, ret;
 212
 213         mode_cmd.width = sizes->surface_width;
 214         mode_cmd.height = sizes->surface_height;
 215
 216 #ifdef PSCNV_KAPI_DRM_MODE_FB_CMD2
 217         mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
 218         mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
 219         mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
 220                                                           sizes->surface_depth);
 221 #else
 222         mode_cmd.bpp = sizes->surface_bpp;
 223         mode_cmd.pitch = mode_cmd.width * (mode_cmd.bpp >> 3);
 224         mode_cmd.pitch = roundup(mode_cmd.pitch, 256);
 225         mode_cmd.depth = sizes->surface_depth;
 226 #endif
 227
 228 #ifdef PSCNV_KAPI_DRM_MODE_FB_CMD2
 229         size = mode_cmd.pitches[0] * mode_cmd.height;
 230 #else
 231         size = mode_cmd.pitch * mode_cmd.height;
 232 #endif
 233         size = roundup(size, PAGE_SIZE);
 234
 235         obj = pscnv_gem_new(dev, size, PSCNV_GEM_CONTIG, 0, 0xd15fb, 0);
 236         if (!obj) {
 237                 ret = -ENOMEM;
 238                 NV_ERROR(dev, "failed to allocate framebuffer\n");
 239                 goto out;
 240         }
 241         nvbo = obj->driver_private;
 242
 243         ret = dev_priv->vm->map_user(nvbo);
 244         if (ret) {
 245                 NV_ERROR(dev, "failed to map fb: %d\n", ret);
 246                 pscnv_mem_free(nvbo);
 247                 goto out;
 248         }
 249
 250 #ifdef __linux__
 251         mutex_lock(&dev->struct_mutex);
 252
 253         info = framebuffer_alloc(0, &dev->pdev->dev);
 254         if (!info) {
 255                 ret = -ENOMEM;
 256                 goto out_unref;
 257         }
 258
 259         ret = fb_alloc_cmap(&info->cmap, 256, 0);
 260         if (ret) {
 261                 ret = -ENOMEM;
 262                 goto out_unref;
 263         }
 264
 265         info->par = nfbdev;
 266 #else
 267         DRM_LOCK(dev);
 268 #endif // __linux__
 269
 270         nouveau_framebuffer_init(dev, &nfbdev->nouveau_fb, &mode_cmd, nvbo);
 271
 272         nouveau_fb = &nfbdev->nouveau_fb;
 273         fb = &nouveau_fb->base;
 274
 275         /* setup helper */
 276         nfbdev->helper.fb = fb;
 277 #ifdef __linux__
 278         nfbdev->helper.fbdev = info;
 279
 280         strcpy(info->fix.id, "nouveaufb");
 281         if (nouveau_nofbaccel)
 282                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
 283         else
 284                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
 285                               FBINFO_HWACCEL_FILLRECT |
 286                               FBINFO_HWACCEL_IMAGEBLIT;
 287 #ifdef FBINFO_CAN_FORCE_OUTPUT
 288         info->flags |= FBINFO_CAN_FORCE_OUTPUT;
 289 #endif
 290         info->fbops = &nouveau_fbcon_ops;
 291         info->fix.smem_start = dev->mode_config.fb_base + nvbo->map1->start;
 292         info->fix.smem_len = size;
 293
 294         info->screen_base = ioremap_wc(dev_priv->fb_phys + nvbo->map1->start, size);
 295         info->screen_size = size;
 296
 297 #ifdef PSCNV_KAPI_DRM_FB_PITCH
 298         drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
 299 #else
 300         drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
 301 #endif
 302         drm_fb_helper_fill_var(info, &nfbdev->helper, sizes->fb_width, sizes->fb_height);
 303
 304         /* FIXME: we really shouldn't expose mmio space at all */
 305         info->fix.mmio_start = drm_get_resource_start(dev, 1);
 306         info->fix.mmio_len = drm_get_resource_len(dev, 1);
 307
 308 #ifndef PSCNV_KAPI_FB_INFO_APERTURES
 309         /* Set aperture base/size for vesafb takeover */
 310         info->apertures = dev_priv->apertures;
 311         if (!info->apertures) {
 312                 ret = -ENOMEM;
 313                 goto out_unref;
 314         }
 315 #endif
 316
 317         info->pixmap.size = 64*1024;
 318         info->pixmap.buf_align = 8;
 319         info->pixmap.access_align = 32;
 320         info->pixmap.flags = FB_PIXMAP_SYSTEM;
 321         info->pixmap.scan_align = 1;
 322
 323         mutex_unlock(&dev->struct_mutex);
 324 #else // __linux__
 325         DRM_UNLOCK(dev);
 326 #endif
 327 #if 0
 328         if (dev_priv->channel && !nouveau_nofbaccel) {
 329                 switch (dev_priv->card_type) {
 330                 case NV_50:
 331                         nv50_fbcon_accel_init(info);
 332                         info->fbops = &nv50_fbcon_ops;
 333                         break;
 334                 default:
 335                         nv04_fbcon_accel_init(info);
 336                         info->fbops = &nv04_fbcon_ops;
 337                         break;
 338                 };
 339         }
 340 #endif
 341         nouveau_fbcon_zfill(dev, nfbdev);
 342
 343         /* To allow resizeing without swapping buffers */
 344         NV_INFO(dev, "allocated %dx%d fb: 0x%llx 0x%llx, bo %p\n",
 345                                                 nouveau_fb->base.width,
 346                                                 nouveau_fb->base.height,
 347                                                 nvbo->start, nvbo->map1->start, nvbo);
 348
 349 #ifdef __linux__
 350         vga_switcheroo_client_fb_set(dev->pdev, info);
 351 #endif
 352         return 0;
 353
 354 #ifdef __linux__
 355 out_unref:
 356         mutex_unlock(&dev->struct_mutex);
 357 #endif
 358 out:
 359         return ret;
 360 }
 361
 362 static int
 363 nouveau_fbcon_find_or_create_single(struct drm_fb_helper *helper,
 364                                     struct drm_fb_helper_surface_size *sizes)
 365 {
 366         struct nouveau_fbdev *nfbdev = (struct nouveau_fbdev *)helper;
 367         int new_fb = 0;
 368         int ret;
 369
 370         if (!helper->fb) {
 371                 ret = nouveau_fbcon_create(nfbdev, sizes);
 372                 if (ret)
 373                         return ret;
 374                 new_fb = 1;
 375         }
 376         return new_fb;
 377 }
 378
 379 void
 380 nouveau_fbcon_output_poll_changed(struct drm_device *dev)
 381 {
 382         struct drm_nouveau_private *dev_priv = dev->dev_private;
 383         drm_fb_helper_hotplug_event(&dev_priv->nfbdev->helper);
 384 }
 385
 386 static int
 387 nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *nfbdev)
 388 {
 389         struct nouveau_framebuffer *nouveau_fb = &nfbdev->nouveau_fb;
 390
 391 #ifdef __linux__
 392         if (nfbdev->helper.fbdev) {
 393                 struct fb_info *info = nfbdev->helper.fbdev;
 394                 unregister_framebuffer(info);
 395                 if (info->cmap.len)
 396                         fb_dealloc_cmap(&info->cmap);
 397                 framebuffer_release(info);
 398         }
 399 #endif
 400
 401         if (nouveau_fb->nvbo) {
 402                 drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem);
 403                 nouveau_fb->nvbo = NULL;
 404         }
 405         drm_fb_helper_fini(&nfbdev->helper);
 406         drm_framebuffer_cleanup(&nouveau_fb->base);
 407         return 0;
 408 }
 409
 410 #ifdef __linux__
 411 void nouveau_fbcon_gpu_lockup(struct fb_info *info)
 412 {
 413         struct nouveau_fbdev *nfbdev = info->par;
 414         struct drm_device *dev = nfbdev->dev;
 415
 416         NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
 417         info->flags |= FBINFO_HWACCEL_DISABLED;
 418 }
 419 #endif
 420
 421 static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
 422         .gamma_set = nouveau_fbcon_gamma_set,
 423         .gamma_get = nouveau_fbcon_gamma_get,
 424         .fb_probe = nouveau_fbcon_find_or_create_single,
 425 };
 426
 427
 428 int nouveau_fbcon_init(struct drm_device *dev)
 429 {
 430         struct drm_nouveau_private *dev_priv = dev->dev_private;
 431         struct nouveau_fbdev *nfbdev;
 432         int ret;
 433
 434         nfbdev = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
 435         if (!nfbdev)
 436                 return -ENOMEM;
 437
 438         nfbdev->dev = dev;
 439         dev_priv->nfbdev = nfbdev;
 440         nfbdev->helper.funcs = &nouveau_fbcon_helper_funcs;
 441
 442         ret = drm_fb_helper_init(dev, &nfbdev->helper,
 443                                  nv_two_heads(dev) ? 2 : 1, 4);
 444         if (ret) {
 445                 kfree(nfbdev);
 446                 return ret;
 447         }
 448
 449         drm_fb_helper_single_add_all_connectors(&nfbdev->helper);
 450         drm_fb_helper_initial_config(&nfbdev->helper, 32);
 451         return 0;
 452 }
 453
 454 void nouveau_fbcon_fini(struct drm_device *dev)
 455 {
 456         struct drm_nouveau_private *dev_priv = dev->dev_private;
 457
 458         if (!dev_priv->nfbdev)
 459                 return;
 460
 461         nouveau_fbcon_destroy(dev, dev_priv->nfbdev);
 462         kfree(dev_priv->nfbdev);
 463         dev_priv->nfbdev = NULL;
 464 }
 465
 466 #ifdef __linux__
 467 void nouveau_fbcon_save_disable_accel(struct drm_device *dev)
 468 {
 469         struct drm_nouveau_private *dev_priv = dev->dev_private;
 470
 471         dev_priv->nfbdev->saved_flags = dev_priv->nfbdev->helper.fbdev->flags;
 472         dev_priv->nfbdev->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
 473 }
 474
 475 void nouveau_fbcon_restore_accel(struct drm_device *dev)
 476 {
 477         struct drm_nouveau_private *dev_priv = dev->dev_private;
 478         dev_priv->nfbdev->helper.fbdev->flags = dev_priv->nfbdev->saved_flags;
 479 }
 480
 481 void nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
 482 {
 483         struct drm_nouveau_private *dev_priv = dev->dev_private;
 484         fb_set_suspend(dev_priv->nfbdev->helper.fbdev, state);
 485 }
 486 #endif
 487
 488 void nouveau_fbcon_zfill_all(struct drm_device *dev)
 489 {
 490         struct drm_nouveau_private *dev_priv = dev->dev_private;
 491         nouveau_fbcon_zfill(dev, dev_priv->nfbdev);
 492 }