drivers/gpu/drm/i915/i915_drv.c

   1 /* i915_drv.c -- i830,i845,i855,i865,i915 driver -*- linux-c -*-
   2  */
   3 /*
   4  *
   5  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   6  * All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the
  10  * "Software"), to deal in the Software without restriction, including
  11  * without limitation the rights to use, copy, modify, merge, publish,
  12  * distribute, sub license, and/or sell copies of the Software, and to
  13  * permit persons to whom the Software is furnished to do so, subject to
  14  * the following conditions:
  15  *
  16  * The above copyright notice and this permission notice (including the
  17  * next paragraph) shall be included in all copies or substantial portions
  18  * of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  21  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  23  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  24  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  25  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  26  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27  *
  28  */
  29
  30 #include <linux/device.h>
  31 #include "drmP.h"
  32 #include "drm.h"
  33 #include "i915_drm.h"
  34 #include "i915_drv.h"
  35
  36 #include <linux/console.h>
  37 #include "drm_crtc_helper.h"
  38
  39 static int i915_modeset = -1;
  40 module_param_named(modeset, i915_modeset, int, 0400);
  41
  42 unsigned int i915_fbpercrtc = 0;
  43 module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400);
  44
  45 unsigned int i915_powersave = 1;
  46 module_param_named(powersave, i915_powersave, int, 0400);
  47
  48 static struct drm_driver driver;
  49
  50 #define INTEL_VGA_DEVICE(id, info) {            \
  51         .class = PCI_CLASS_DISPLAY_VGA << 8,    \
  52         .class_mask = 0xffff00,                 \
  53         .vendor = 0x8086,                       \
  54         .device = id,                           \
  55         .subvendor = PCI_ANY_ID,                \
  56         .subdevice = PCI_ANY_ID,                \
  57         .driver_data = (unsigned long) info }
  58
  59 const static struct intel_device_info intel_i830_info = {
  60         .is_i8xx = 1, .is_mobile = 1, .cursor_needs_physical = 1,
  61 };
  62
  63 const static struct intel_device_info intel_845g_info = {
  64         .is_i8xx = 1,
  65 };
  66
  67 const static struct intel_device_info intel_i85x_info = {
  68         .is_i8xx = 1, .is_mobile = 1, .cursor_needs_physical = 1,
  69 };
  70
  71 const static struct intel_device_info intel_i865g_info = {
  72         .is_i8xx = 1,
  73 };
  74
  75 const static struct intel_device_info intel_i915g_info = {
  76         .is_i915g = 1, .is_i9xx = 1, .cursor_needs_physical = 1,
  77 };
  78 const static struct intel_device_info intel_i915gm_info = {
  79         .is_i9xx = 1,  .is_mobile = 1, .has_fbc = 1,
  80         .cursor_needs_physical = 1,
  81 };
  82 const static struct intel_device_info intel_i945g_info = {
  83         .is_i9xx = 1, .has_hotplug = 1, .cursor_needs_physical = 1,
  84 };
  85 const static struct intel_device_info intel_i945gm_info = {
  86         .is_i945gm = 1, .is_i9xx = 1, .is_mobile = 1, .has_fbc = 1,
  87         .has_hotplug = 1, .cursor_needs_physical = 1,
  88 };
  89
  90 const static struct intel_device_info intel_i965g_info = {
  91         .is_i965g = 1, .is_i9xx = 1, .has_hotplug = 1,
  92 };
  93
  94 const static struct intel_device_info intel_i965gm_info = {
  95         .is_i965g = 1, .is_mobile = 1, .is_i965gm = 1, .is_i9xx = 1,
  96         .is_mobile = 1, .has_fbc = 1, .has_rc6 = 1,
  97         .has_hotplug = 1,
  98 };
  99
 100 const static struct intel_device_info intel_g33_info = {
 101         .is_g33 = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 102         .has_hotplug = 1,
 103 };
 104
 105 const static struct intel_device_info intel_g45_info = {
 106         .is_i965g = 1, .is_g4x = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 107         .has_pipe_cxsr = 1,
 108         .has_hotplug = 1,
 109 };
 110
 111 const static struct intel_device_info intel_gm45_info = {
 112         .is_i965g = 1, .is_mobile = 1, .is_g4x = 1, .is_i9xx = 1,
 113         .is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1, .has_rc6 = 1,
 114         .has_pipe_cxsr = 1,
 115         .has_hotplug = 1,
 116 };
 117
 118 const static struct intel_device_info intel_pineview_info = {
 119         .is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .is_i9xx = 1,
 120         .has_pipe_cxsr = 1,
 121         .has_hotplug = 1,
 122 };
 123
 124 const static struct intel_device_info intel_ironlake_d_info = {
 125         .is_ironlake = 1, .is_i965g = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 126         .has_pipe_cxsr = 1,
 127         .has_hotplug = 1,
 128 };
 129
 130 const static struct intel_device_info intel_ironlake_m_info = {
 131         .is_ironlake = 1, .is_mobile = 1, .is_i965g = 1, .is_i9xx = 1,
 132         .need_gfx_hws = 1, .has_rc6 = 1,
 133         .has_hotplug = 1,
 134 };
 135
 136 const static struct pci_device_id pciidlist[] = {
 137         INTEL_VGA_DEVICE(0x3577, &intel_i830_info),
 138         INTEL_VGA_DEVICE(0x2562, &intel_845g_info),
 139         INTEL_VGA_DEVICE(0x3582, &intel_i85x_info),
 140         INTEL_VGA_DEVICE(0x35e8, &intel_i85x_info),
 141         INTEL_VGA_DEVICE(0x2572, &intel_i865g_info),
 142         INTEL_VGA_DEVICE(0x2582, &intel_i915g_info),
 143         INTEL_VGA_DEVICE(0x258a, &intel_i915g_info),
 144         INTEL_VGA_DEVICE(0x2592, &intel_i915gm_info),
 145         INTEL_VGA_DEVICE(0x2772, &intel_i945g_info),
 146         INTEL_VGA_DEVICE(0x27a2, &intel_i945gm_info),
 147         INTEL_VGA_DEVICE(0x27ae, &intel_i945gm_info),
 148         INTEL_VGA_DEVICE(0x2972, &intel_i965g_info),
 149         INTEL_VGA_DEVICE(0x2982, &intel_i965g_info),
 150         INTEL_VGA_DEVICE(0x2992, &intel_i965g_info),
 151         INTEL_VGA_DEVICE(0x29a2, &intel_i965g_info),
 152         INTEL_VGA_DEVICE(0x29b2, &intel_g33_info),
 153         INTEL_VGA_DEVICE(0x29c2, &intel_g33_info),
 154         INTEL_VGA_DEVICE(0x29d2, &intel_g33_info),
 155         INTEL_VGA_DEVICE(0x2a02, &intel_i965gm_info),
 156         INTEL_VGA_DEVICE(0x2a12, &intel_i965gm_info),
 157         INTEL_VGA_DEVICE(0x2a42, &intel_gm45_info),
 158         INTEL_VGA_DEVICE(0x2e02, &intel_g45_info),
 159         INTEL_VGA_DEVICE(0x2e12, &intel_g45_info),
 160         INTEL_VGA_DEVICE(0x2e22, &intel_g45_info),
 161         INTEL_VGA_DEVICE(0x2e32, &intel_g45_info),
 162         INTEL_VGA_DEVICE(0x2e42, &intel_g45_info),
 163         INTEL_VGA_DEVICE(0xa001, &intel_pineview_info),
 164         INTEL_VGA_DEVICE(0xa011, &intel_pineview_info),
 165         INTEL_VGA_DEVICE(0x0042, &intel_ironlake_d_info),
 166         INTEL_VGA_DEVICE(0x0046, &intel_ironlake_m_info),
 167         {0, 0, 0}
 168 };
 169
 170 #if defined(CONFIG_DRM_I915_KMS)
 171 MODULE_DEVICE_TABLE(pci, pciidlist);
 172 #endif
 173
 174 static int i915_suspend(struct drm_device *dev, pm_message_t state)
 175 {
 176         struct drm_i915_private *dev_priv = dev->dev_private;
 177
 178         if (!dev || !dev_priv) {
 179                 DRM_ERROR("dev: %p, dev_priv: %p\n", dev, dev_priv);
 180                 DRM_ERROR("DRM not initialized, aborting suspend.\n");
 181                 return -ENODEV;
 182         }
 183
 184         if (state.event == PM_EVENT_PRETHAW)
 185                 return 0;
 186
 187         pci_save_state(dev->pdev);
 188
 189         /* If KMS is active, we do the leavevt stuff here */
 190         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 191                 if (i915_gem_idle(dev))
 192                         dev_err(&dev->pdev->dev,
 193                                 "GEM idle failed, resume may fail\n");
 194                 drm_irq_uninstall(dev);
 195         }
 196
 197         i915_save_state(dev);
 198
 199         intel_opregion_free(dev, 1);
 200
 201         if (state.event == PM_EVENT_SUSPEND) {
 202                 /* Shut down the device */
 203                 pci_disable_device(dev->pdev);
 204                 pci_set_power_state(dev->pdev, PCI_D3hot);
 205         }
 206
 207         /* Modeset on resume, not lid events */
 208         dev_priv->modeset_on_lid = 0;
 209
 210         return 0;
 211 }
 212
 213 static int i915_resume(struct drm_device *dev)
 214 {
 215         struct drm_i915_private *dev_priv = dev->dev_private;
 216         int ret = 0;
 217
 218         if (pci_enable_device(dev->pdev))
 219                 return -1;
 220         pci_set_master(dev->pdev);
 221
 222         i915_restore_state(dev);
 223
 224         intel_opregion_init(dev, 1);
 225
 226         /* KMS EnterVT equivalent */
 227         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 228                 mutex_lock(&dev->struct_mutex);
 229                 dev_priv->mm.suspended = 0;
 230
 231                 ret = i915_gem_init_ringbuffer(dev);
 232                 if (ret != 0)
 233                         ret = -1;
 234                 mutex_unlock(&dev->struct_mutex);
 235
 236                 drm_irq_install(dev);
 237         }
 238         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 239                 /* Resume the modeset for every activated CRTC */
 240                 drm_helper_resume_force_mode(dev);
 241         }
 242
 243         dev_priv->modeset_on_lid = 0;
 244
 245         return ret;
 246 }
 247
 248 /**
 249  * i965_reset - reset chip after a hang
 250  * @dev: drm device to reset
 251  * @flags: reset domains
 252  *
 253  * Reset the chip.  Useful if a hang is detected. Returns zero on successful
 254  * reset or otherwise an error code.
 255  *
 256  * Procedure is fairly simple:
 257  *   - reset the chip using the reset reg
 258  *   - re-init context state
 259  *   - re-init hardware status page
 260  *   - re-init ring buffer
 261  *   - re-init interrupt state
 262  *   - re-init display
 263  */
 264 int i965_reset(struct drm_device *dev, u8 flags)
 265 {
 266         drm_i915_private_t *dev_priv = dev->dev_private;
 267         unsigned long timeout;
 268         u8 gdrst;
 269         /*
 270          * We really should only reset the display subsystem if we actually
 271          * need to
 272          */
 273         bool need_display = true;
 274
 275         mutex_lock(&dev->struct_mutex);
 276
 277         /*
 278          * Clear request list
 279          */
 280         i915_gem_retire_requests(dev);
 281
 282         if (need_display)
 283                 i915_save_display(dev);
 284
 285         if (IS_I965G(dev) || IS_G4X(dev)) {
 286                 /*
 287                  * Set the domains we want to reset, then the reset bit (bit 0).
 288                  * Clear the reset bit after a while and wait for hardware status
 289                  * bit (bit 1) to be set
 290                  */
 291                 pci_read_config_byte(dev->pdev, GDRST, &gdrst);
 292                 pci_write_config_byte(dev->pdev, GDRST, gdrst | flags | ((flags == GDRST_FULL) ? 0x1 : 0x0));
 293                 udelay(50);
 294                 pci_write_config_byte(dev->pdev, GDRST, gdrst & 0xfe);
 295
 296                 /* ...we don't want to loop forever though, 500ms should be plenty */
 297                timeout = jiffies + msecs_to_jiffies(500);
 298                 do {
 299                         udelay(100);
 300                         pci_read_config_byte(dev->pdev, GDRST, &gdrst);
 301                 } while ((gdrst & 0x1) && time_after(timeout, jiffies));
 302
 303                 if (gdrst & 0x1) {
 304                         WARN(true, "i915: Failed to reset chip\n");
 305                         mutex_unlock(&dev->struct_mutex);
 306                         return -EIO;
 307                 }
 308         } else {
 309                 DRM_ERROR("Error occurred. Don't know how to reset this chip.\n");
 310                 return -ENODEV;
 311         }
 312
 313         /* Ok, now get things going again... */
 314
 315         /*
 316          * Everything depends on having the GTT running, so we need to start
 317          * there.  Fortunately we don't need to do this unless we reset the
 318          * chip at a PCI level.
 319          *
 320          * Next we need to restore the context, but we don't use those
 321          * yet either...
 322          *
 323          * Ring buffer needs to be re-initialized in the KMS case, or if X
 324          * was running at the time of the reset (i.e. we weren't VT
 325          * switched away).
 326          */
 327         if (drm_core_check_feature(dev, DRIVER_MODESET) ||
 328             !dev_priv->mm.suspended) {
 329                 drm_i915_ring_buffer_t *ring = &dev_priv->ring;
 330                 struct drm_gem_object *obj = ring->ring_obj;
 331                 struct drm_i915_gem_object *obj_priv = obj->driver_private;
 332                 dev_priv->mm.suspended = 0;
 333
 334                 /* Stop the ring if it's running. */
 335                 I915_WRITE(PRB0_CTL, 0);
 336                 I915_WRITE(PRB0_TAIL, 0);
 337                 I915_WRITE(PRB0_HEAD, 0);
 338
 339                 /* Initialize the ring. */
 340                 I915_WRITE(PRB0_START, obj_priv->gtt_offset);
 341                 I915_WRITE(PRB0_CTL,
 342                            ((obj->size - 4096) & RING_NR_PAGES) |
 343                            RING_NO_REPORT |
 344                            RING_VALID);
 345                 if (!drm_core_check_feature(dev, DRIVER_MODESET))
 346                         i915_kernel_lost_context(dev);
 347                 else {
 348                         ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 349                         ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 350                         ring->space = ring->head - (ring->tail + 8);
 351                         if (ring->space < 0)
 352                                 ring->space += ring->Size;
 353                 }
 354
 355                 mutex_unlock(&dev->struct_mutex);
 356                 drm_irq_uninstall(dev);
 357                 drm_irq_install(dev);
 358                 mutex_lock(&dev->struct_mutex);
 359         }
 360
 361         /*
 362          * Display needs restore too...
 363          */
 364         if (need_display)
 365                 i915_restore_display(dev);
 366
 367         mutex_unlock(&dev->struct_mutex);
 368         return 0;
 369 }
 370
 371
 372 static int __devinit
 373 i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 374 {
 375         return drm_get_dev(pdev, ent, &driver);
 376 }
 377
 378 static void
 379 i915_pci_remove(struct pci_dev *pdev)
 380 {
 381         struct drm_device *dev = pci_get_drvdata(pdev);
 382
 383         drm_put_dev(dev);
 384 }
 385
 386 static int
 387 i915_pci_suspend(struct pci_dev *pdev, pm_message_t state)
 388 {
 389         struct drm_device *dev = pci_get_drvdata(pdev);
 390
 391         return i915_suspend(dev, state);
 392 }
 393
 394 static int
 395 i915_pci_resume(struct pci_dev *pdev)
 396 {
 397         struct drm_device *dev = pci_get_drvdata(pdev);
 398
 399         return i915_resume(dev);
 400 }
 401
 402 static int
 403 i915_pm_suspend(struct device *dev)
 404 {
 405         return i915_pci_suspend(to_pci_dev(dev), PMSG_SUSPEND);
 406 }
 407
 408 static int
 409 i915_pm_resume(struct device *dev)
 410 {
 411         return i915_pci_resume(to_pci_dev(dev));
 412 }
 413
 414 static int
 415 i915_pm_freeze(struct device *dev)
 416 {
 417         return i915_pci_suspend(to_pci_dev(dev), PMSG_FREEZE);
 418 }
 419
 420 static int
 421 i915_pm_thaw(struct device *dev)
 422 {
 423         /* thaw during hibernate, do nothing! */
 424         return 0;
 425 }
 426
 427 static int
 428 i915_pm_poweroff(struct device *dev)
 429 {
 430         return i915_pci_suspend(to_pci_dev(dev), PMSG_HIBERNATE);
 431 }
 432
 433 static int
 434 i915_pm_restore(struct device *dev)
 435 {
 436         return i915_pci_resume(to_pci_dev(dev));
 437 }
 438
 439 const struct dev_pm_ops i915_pm_ops = {
 440      .suspend = i915_pm_suspend,
 441      .resume = i915_pm_resume,
 442      .freeze = i915_pm_freeze,
 443      .thaw = i915_pm_thaw,
 444      .poweroff = i915_pm_poweroff,
 445      .restore = i915_pm_restore,
 446 };
 447
 448 static struct vm_operations_struct i915_gem_vm_ops = {
 449         .fault = i915_gem_fault,
 450         .open = drm_gem_vm_open,
 451         .close = drm_gem_vm_close,
 452 };
 453
 454 static struct drm_driver driver = {
 455         /* don't use mtrr's here, the Xserver or user space app should
 456          * deal with them for intel hardware.
 457          */
 458         .driver_features =
 459             DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/
 460             DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM,
 461         .load = i915_driver_load,
 462         .unload = i915_driver_unload,
 463         .open = i915_driver_open,
 464         .lastclose = i915_driver_lastclose,
 465         .preclose = i915_driver_preclose,
 466         .postclose = i915_driver_postclose,
 467         .suspend = i915_suspend,
 468         .resume = i915_resume,
 469         .device_is_agp = i915_driver_device_is_agp,
 470         .enable_vblank = i915_enable_vblank,
 471         .disable_vblank = i915_disable_vblank,
 472         .irq_preinstall = i915_driver_irq_preinstall,
 473         .irq_postinstall = i915_driver_irq_postinstall,
 474         .irq_uninstall = i915_driver_irq_uninstall,
 475         .irq_handler = i915_driver_irq_handler,
 476         .reclaim_buffers = drm_core_reclaim_buffers,
 477         .get_map_ofs = drm_core_get_map_ofs,
 478         .get_reg_ofs = drm_core_get_reg_ofs,
 479         .master_create = i915_master_create,
 480         .master_destroy = i915_master_destroy,
 481 #if defined(CONFIG_DEBUG_FS)
 482         .debugfs_init = i915_debugfs_init,
 483         .debugfs_cleanup = i915_debugfs_cleanup,
 484 #endif
 485         .gem_init_object = i915_gem_init_object,
 486         .gem_free_object = i915_gem_free_object,
 487         .gem_vm_ops = &i915_gem_vm_ops,
 488         .ioctls = i915_ioctls,
 489         .fops = {
 490                  .owner = THIS_MODULE,
 491                  .open = drm_open,
 492                  .release = drm_release,
 493                  .unlocked_ioctl = drm_ioctl,
 494                  .mmap = drm_gem_mmap,
 495                  .poll = drm_poll,
 496                  .fasync = drm_fasync,
 497                  .read = drm_read,
 498 #ifdef CONFIG_COMPAT
 499                  .compat_ioctl = i915_compat_ioctl,
 500 #endif
 501         },
 502
 503         .pci_driver = {
 504                  .name = DRIVER_NAME,
 505                  .id_table = pciidlist,
 506                  .probe = i915_pci_probe,
 507                  .remove = i915_pci_remove,
 508                  .driver.pm = &i915_pm_ops,
 509         },
 510
 511         .name = DRIVER_NAME,
 512         .desc = DRIVER_DESC,
 513         .date = DRIVER_DATE,
 514         .major = DRIVER_MAJOR,
 515         .minor = DRIVER_MINOR,
 516         .patchlevel = DRIVER_PATCHLEVEL,
 517 };
 518
 519 static int __init i915_init(void)
 520 {
 521         driver.num_ioctls = i915_max_ioctl;
 522
 523         i915_gem_shrinker_init();
 524
 525         /*
 526          * If CONFIG_DRM_I915_KMS is set, default to KMS unless
 527          * explicitly disabled with the module pararmeter.
 528          *
 529          * Otherwise, just follow the parameter (defaulting to off).
 530          *
 531          * Allow optional vga_text_mode_force boot option to override
 532          * the default behavior.
 533          */
 534 #if defined(CONFIG_DRM_I915_KMS)
 535         if (i915_modeset != 0)
 536                 driver.driver_features |= DRIVER_MODESET;
 537 #endif
 538         if (i915_modeset == 1)
 539                 driver.driver_features |= DRIVER_MODESET;
 540
 541 #ifdef CONFIG_VGA_CONSOLE
 542         if (vgacon_text_force() && i915_modeset == -1)
 543                 driver.driver_features &= ~DRIVER_MODESET;
 544 #endif
 545
 546         return drm_init(&driver);
 547 }
 548
 549 static void __exit i915_exit(void)
 550 {
 551         i915_gem_shrinker_exit();
 552         drm_exit(&driver);
 553 }
 554
 555 module_init(i915_init);
 556 module_exit(i915_exit);
 557
 558 MODULE_AUTHOR(DRIVER_AUTHOR);
 559 MODULE_DESCRIPTION(DRIVER_DESC);
 560 MODULE_LICENSE("GPL and additional rights");