SAFE public projects git trees. - safe/jmp/linux-2.6/blob - 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 unsigned int i915_lvds_downclock = 0;
  49 module_param_named(lvds_downclock, i915_lvds_downclock, int, 0400);
  50
  51 static struct drm_driver driver;
  52
  53 #define INTEL_VGA_DEVICE(id, info) {            \
  54         .class = PCI_CLASS_DISPLAY_VGA << 8,    \
  55         .class_mask = 0xffff00,                 \
  56         .vendor = 0x8086,                       \
  57         .device = id,                           \
  58         .subvendor = PCI_ANY_ID,                \
  59         .subdevice = PCI_ANY_ID,                \
  60         .driver_data = (unsigned long) info }
  61
  62 const static struct intel_device_info intel_i830_info = {
  63         .is_i8xx = 1, .is_mobile = 1, .cursor_needs_physical = 1,
  64 };
  65
  66 const static struct intel_device_info intel_845g_info = {
  67         .is_i8xx = 1,
  68 };
  69
  70 const static struct intel_device_info intel_i85x_info = {
  71         .is_i8xx = 1, .is_mobile = 1, .cursor_needs_physical = 1,
  72 };
  73
  74 const static struct intel_device_info intel_i865g_info = {
  75         .is_i8xx = 1,
  76 };
  77
  78 const static struct intel_device_info intel_i915g_info = {
  79         .is_i915g = 1, .is_i9xx = 1, .cursor_needs_physical = 1,
  80 };
  81 const static struct intel_device_info intel_i915gm_info = {
  82         .is_i9xx = 1,  .is_mobile = 1, .has_fbc = 1,
  83         .cursor_needs_physical = 1,
  84 };
  85 const static struct intel_device_info intel_i945g_info = {
  86         .is_i9xx = 1, .has_hotplug = 1, .cursor_needs_physical = 1,
  87 };
  88 const static struct intel_device_info intel_i945gm_info = {
  89         .is_i945gm = 1, .is_i9xx = 1, .is_mobile = 1, .has_fbc = 1,
  90         .has_hotplug = 1, .cursor_needs_physical = 1,
  91 };
  92
  93 const static struct intel_device_info intel_i965g_info = {
  94         .is_i965g = 1, .is_i9xx = 1, .has_hotplug = 1,
  95 };
  96
  97 const static struct intel_device_info intel_i965gm_info = {
  98         .is_i965g = 1, .is_mobile = 1, .is_i965gm = 1, .is_i9xx = 1,
  99         .is_mobile = 1, .has_fbc = 1, .has_rc6 = 1,
 100         .has_hotplug = 1,
 101 };
 102
 103 const static struct intel_device_info intel_g33_info = {
 104         .is_g33 = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 105         .has_hotplug = 1,
 106 };
 107
 108 const static struct intel_device_info intel_g45_info = {
 109         .is_i965g = 1, .is_g4x = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 110         .has_pipe_cxsr = 1,
 111         .has_hotplug = 1,
 112 };
 113
 114 const static struct intel_device_info intel_gm45_info = {
 115         .is_i965g = 1, .is_mobile = 1, .is_g4x = 1, .is_i9xx = 1,
 116         .is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1, .has_rc6 = 1,
 117         .has_pipe_cxsr = 1,
 118         .has_hotplug = 1,
 119 };
 120
 121 const static struct intel_device_info intel_pineview_info = {
 122         .is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .is_i9xx = 1,
 123         .need_gfx_hws = 1,
 124         .has_hotplug = 1,
 125 };
 126
 127 const static struct intel_device_info intel_ironlake_d_info = {
 128         .is_ironlake = 1, .is_i965g = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 129         .has_pipe_cxsr = 1,
 130         .has_hotplug = 1,
 131 };
 132
 133 const static struct intel_device_info intel_ironlake_m_info = {
 134         .is_ironlake = 1, .is_mobile = 1, .is_i965g = 1, .is_i9xx = 1,
 135         .need_gfx_hws = 1, .has_rc6 = 1,
 136         .has_hotplug = 1,
 137 };
 138
 139 const static struct pci_device_id pciidlist[] = {
 140         INTEL_VGA_DEVICE(0x3577, &intel_i830_info),
 141         INTEL_VGA_DEVICE(0x2562, &intel_845g_info),
 142         INTEL_VGA_DEVICE(0x3582, &intel_i85x_info),
 143         INTEL_VGA_DEVICE(0x35e8, &intel_i85x_info),
 144         INTEL_VGA_DEVICE(0x2572, &intel_i865g_info),
 145         INTEL_VGA_DEVICE(0x2582, &intel_i915g_info),
 146         INTEL_VGA_DEVICE(0x258a, &intel_i915g_info),
 147         INTEL_VGA_DEVICE(0x2592, &intel_i915gm_info),
 148         INTEL_VGA_DEVICE(0x2772, &intel_i945g_info),
 149         INTEL_VGA_DEVICE(0x27a2, &intel_i945gm_info),
 150         INTEL_VGA_DEVICE(0x27ae, &intel_i945gm_info),
 151         INTEL_VGA_DEVICE(0x2972, &intel_i965g_info),
 152         INTEL_VGA_DEVICE(0x2982, &intel_i965g_info),
 153         INTEL_VGA_DEVICE(0x2992, &intel_i965g_info),
 154         INTEL_VGA_DEVICE(0x29a2, &intel_i965g_info),
 155         INTEL_VGA_DEVICE(0x29b2, &intel_g33_info),
 156         INTEL_VGA_DEVICE(0x29c2, &intel_g33_info),
 157         INTEL_VGA_DEVICE(0x29d2, &intel_g33_info),
 158         INTEL_VGA_DEVICE(0x2a02, &intel_i965gm_info),
 159         INTEL_VGA_DEVICE(0x2a12, &intel_i965gm_info),
 160         INTEL_VGA_DEVICE(0x2a42, &intel_gm45_info),
 161         INTEL_VGA_DEVICE(0x2e02, &intel_g45_info),
 162         INTEL_VGA_DEVICE(0x2e12, &intel_g45_info),
 163         INTEL_VGA_DEVICE(0x2e22, &intel_g45_info),
 164         INTEL_VGA_DEVICE(0x2e32, &intel_g45_info),
 165         INTEL_VGA_DEVICE(0x2e42, &intel_g45_info),
 166         INTEL_VGA_DEVICE(0xa001, &intel_pineview_info),
 167         INTEL_VGA_DEVICE(0xa011, &intel_pineview_info),
 168         INTEL_VGA_DEVICE(0x0042, &intel_ironlake_d_info),
 169         INTEL_VGA_DEVICE(0x0046, &intel_ironlake_m_info),
 170         {0, 0, 0}
 171 };
 172
 173 #if defined(CONFIG_DRM_I915_KMS)
 174 MODULE_DEVICE_TABLE(pci, pciidlist);
 175 #endif
 176
 177 static int i915_drm_freeze(struct drm_device *dev)
 178 {
 179         struct drm_i915_private *dev_priv = dev->dev_private;
 180
 181         pci_save_state(dev->pdev);
 182
 183         /* If KMS is active, we do the leavevt stuff here */
 184         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 185                 int error = i915_gem_idle(dev);
 186                 if (error) {
 187                         dev_err(&dev->pdev->dev,
 188                                 "GEM idle failed, resume might fail\n");
 189                         return error;
 190                 }
 191                 drm_irq_uninstall(dev);
 192         }
 193
 194         i915_save_state(dev);
 195
 196         intel_opregion_free(dev, 1);
 197
 198         /* Modeset on resume, not lid events */
 199         dev_priv->modeset_on_lid = 0;
 200
 201         return 0;
 202 }
 203
 204 static int i915_suspend(struct drm_device *dev, pm_message_t state)
 205 {
 206         int error;
 207
 208         if (!dev || !dev->dev_private) {
 209                 DRM_ERROR("dev: %p\n", dev);
 210                 DRM_ERROR("DRM not initialized, aborting suspend.\n");
 211                 return -ENODEV;
 212         }
 213
 214         if (state.event == PM_EVENT_PRETHAW)
 215                 return 0;
 216
 217         error = i915_drm_freeze(dev);
 218         if (error)
 219                 return error;
 220
 221         if (state.event == PM_EVENT_SUSPEND) {
 222                 /* Shut down the device */
 223                 pci_disable_device(dev->pdev);
 224                 pci_set_power_state(dev->pdev, PCI_D3hot);
 225         }
 226
 227         return 0;
 228 }
 229
 230 static int i915_drm_thaw(struct drm_device *dev)
 231 {
 232         struct drm_i915_private *dev_priv = dev->dev_private;
 233         int error = 0;
 234
 235         i915_restore_state(dev);
 236
 237         intel_opregion_init(dev, 1);
 238
 239         /* KMS EnterVT equivalent */
 240         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 241                 mutex_lock(&dev->struct_mutex);
 242                 dev_priv->mm.suspended = 0;
 243
 244                 error = i915_gem_init_ringbuffer(dev);
 245                 mutex_unlock(&dev->struct_mutex);
 246
 247                 drm_irq_install(dev);
 248
 249                 /* Resume the modeset for every activated CRTC */
 250                 drm_helper_resume_force_mode(dev);
 251         }
 252
 253         dev_priv->modeset_on_lid = 0;
 254
 255         return error;
 256 }
 257
 258 static int i915_resume(struct drm_device *dev)
 259 {
 260         if (pci_enable_device(dev->pdev))
 261                 return -EIO;
 262
 263         pci_set_master(dev->pdev);
 264
 265         return i915_drm_thaw(dev);
 266 }
 267
 268 /**
 269  * i965_reset - reset chip after a hang
 270  * @dev: drm device to reset
 271  * @flags: reset domains
 272  *
 273  * Reset the chip.  Useful if a hang is detected. Returns zero on successful
 274  * reset or otherwise an error code.
 275  *
 276  * Procedure is fairly simple:
 277  *   - reset the chip using the reset reg
 278  *   - re-init context state
 279  *   - re-init hardware status page
 280  *   - re-init ring buffer
 281  *   - re-init interrupt state
 282  *   - re-init display
 283  */
 284 int i965_reset(struct drm_device *dev, u8 flags)
 285 {
 286         drm_i915_private_t *dev_priv = dev->dev_private;
 287         unsigned long timeout;
 288         u8 gdrst;
 289         /*
 290          * We really should only reset the display subsystem if we actually
 291          * need to
 292          */
 293         bool need_display = true;
 294
 295         mutex_lock(&dev->struct_mutex);
 296
 297         /*
 298          * Clear request list
 299          */
 300         i915_gem_retire_requests(dev);
 301
 302         if (need_display)
 303                 i915_save_display(dev);
 304
 305         if (IS_I965G(dev) || IS_G4X(dev)) {
 306                 /*
 307                  * Set the domains we want to reset, then the reset bit (bit 0).
 308                  * Clear the reset bit after a while and wait for hardware status
 309                  * bit (bit 1) to be set
 310                  */
 311                 pci_read_config_byte(dev->pdev, GDRST, &gdrst);
 312                 pci_write_config_byte(dev->pdev, GDRST, gdrst | flags | ((flags == GDRST_FULL) ? 0x1 : 0x0));
 313                 udelay(50);
 314                 pci_write_config_byte(dev->pdev, GDRST, gdrst & 0xfe);
 315
 316                 /* ...we don't want to loop forever though, 500ms should be plenty */
 317                timeout = jiffies + msecs_to_jiffies(500);
 318                 do {
 319                         udelay(100);
 320                         pci_read_config_byte(dev->pdev, GDRST, &gdrst);
 321                 } while ((gdrst & 0x1) && time_after(timeout, jiffies));
 322
 323                 if (gdrst & 0x1) {
 324                         WARN(true, "i915: Failed to reset chip\n");
 325                         mutex_unlock(&dev->struct_mutex);
 326                         return -EIO;
 327                 }
 328         } else {
 329                 DRM_ERROR("Error occurred. Don't know how to reset this chip.\n");
 330                 return -ENODEV;
 331         }
 332
 333         /* Ok, now get things going again... */
 334
 335         /*
 336          * Everything depends on having the GTT running, so we need to start
 337          * there.  Fortunately we don't need to do this unless we reset the
 338          * chip at a PCI level.
 339          *
 340          * Next we need to restore the context, but we don't use those
 341          * yet either...
 342          *
 343          * Ring buffer needs to be re-initialized in the KMS case, or if X
 344          * was running at the time of the reset (i.e. we weren't VT
 345          * switched away).
 346          */
 347         if (drm_core_check_feature(dev, DRIVER_MODESET) ||
 348             !dev_priv->mm.suspended) {
 349                 drm_i915_ring_buffer_t *ring = &dev_priv->ring;
 350                 struct drm_gem_object *obj = ring->ring_obj;
 351                 struct drm_i915_gem_object *obj_priv = obj->driver_private;
 352                 dev_priv->mm.suspended = 0;
 353
 354                 /* Stop the ring if it's running. */
 355                 I915_WRITE(PRB0_CTL, 0);
 356                 I915_WRITE(PRB0_TAIL, 0);
 357                 I915_WRITE(PRB0_HEAD, 0);
 358
 359                 /* Initialize the ring. */
 360                 I915_WRITE(PRB0_START, obj_priv->gtt_offset);
 361                 I915_WRITE(PRB0_CTL,
 362                            ((obj->size - 4096) & RING_NR_PAGES) |
 363                            RING_NO_REPORT |
 364                            RING_VALID);
 365                 if (!drm_core_check_feature(dev, DRIVER_MODESET))
 366                         i915_kernel_lost_context(dev);
 367                 else {
 368                         ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 369                         ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 370                         ring->space = ring->head - (ring->tail + 8);
 371                         if (ring->space < 0)
 372                                 ring->space += ring->Size;
 373                 }
 374
 375                 mutex_unlock(&dev->struct_mutex);
 376                 drm_irq_uninstall(dev);
 377                 drm_irq_install(dev);
 378                 mutex_lock(&dev->struct_mutex);
 379         }
 380
 381         /*
 382          * Display needs restore too...
 383          */
 384         if (need_display)
 385                 i915_restore_display(dev);
 386
 387         mutex_unlock(&dev->struct_mutex);
 388         return 0;
 389 }
 390
 391
 392 static int __devinit
 393 i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 394 {
 395         return drm_get_dev(pdev, ent, &driver);
 396 }
 397
 398 static void
 399 i915_pci_remove(struct pci_dev *pdev)
 400 {
 401         struct drm_device *dev = pci_get_drvdata(pdev);
 402
 403         drm_put_dev(dev);
 404 }
 405
 406 static int i915_pm_suspend(struct device *dev)
 407 {
 408         struct pci_dev *pdev = to_pci_dev(dev);
 409         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 410         int error;
 411
 412         if (!drm_dev || !drm_dev->dev_private) {
 413                 dev_err(dev, "DRM not initialized, aborting suspend.\n");
 414                 return -ENODEV;
 415         }
 416
 417         error = i915_drm_freeze(drm_dev);
 418         if (error)
 419                 return error;
 420
 421         pci_disable_device(pdev);
 422         pci_set_power_state(pdev, PCI_D3hot);
 423
 424         return 0;
 425 }
 426
 427 static int i915_pm_resume(struct device *dev)
 428 {
 429         struct pci_dev *pdev = to_pci_dev(dev);
 430         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 431
 432         return i915_resume(drm_dev);
 433 }
 434
 435 static int i915_pm_freeze(struct device *dev)
 436 {
 437         struct pci_dev *pdev = to_pci_dev(dev);
 438         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 439
 440         if (!drm_dev || !drm_dev->dev_private) {
 441                 dev_err(dev, "DRM not initialized, aborting suspend.\n");
 442                 return -ENODEV;
 443         }
 444
 445         return i915_drm_freeze(drm_dev);
 446 }
 447
 448 static int i915_pm_thaw(struct device *dev)
 449 {
 450         struct pci_dev *pdev = to_pci_dev(dev);
 451         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 452
 453         return i915_drm_thaw(drm_dev);
 454 }
 455
 456 static int i915_pm_poweroff(struct device *dev)
 457 {
 458         struct pci_dev *pdev = to_pci_dev(dev);
 459         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 460
 461         return i915_drm_freeze(drm_dev);
 462 }
 463
 464 const struct dev_pm_ops i915_pm_ops = {
 465      .suspend = i915_pm_suspend,
 466      .resume = i915_pm_resume,
 467      .freeze = i915_pm_freeze,
 468      .thaw = i915_pm_thaw,
 469      .poweroff = i915_pm_poweroff,
 470      .restore = i915_pm_resume,
 471 };
 472
 473 static struct vm_operations_struct i915_gem_vm_ops = {
 474         .fault = i915_gem_fault,
 475         .open = drm_gem_vm_open,
 476         .close = drm_gem_vm_close,
 477 };
 478
 479 static struct drm_driver driver = {
 480         /* don't use mtrr's here, the Xserver or user space app should
 481          * deal with them for intel hardware.
 482          */
 483         .driver_features =
 484             DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/
 485             DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM,
 486         .load = i915_driver_load,
 487         .unload = i915_driver_unload,
 488         .open = i915_driver_open,
 489         .lastclose = i915_driver_lastclose,
 490         .preclose = i915_driver_preclose,
 491         .postclose = i915_driver_postclose,
 492
 493         /* Used in place of i915_pm_ops for non-DRIVER_MODESET */
 494         .suspend = i915_suspend,
 495         .resume = i915_resume,
 496
 497         .device_is_agp = i915_driver_device_is_agp,
 498         .enable_vblank = i915_enable_vblank,
 499         .disable_vblank = i915_disable_vblank,
 500         .irq_preinstall = i915_driver_irq_preinstall,
 501         .irq_postinstall = i915_driver_irq_postinstall,
 502         .irq_uninstall = i915_driver_irq_uninstall,
 503         .irq_handler = i915_driver_irq_handler,
 504         .reclaim_buffers = drm_core_reclaim_buffers,
 505         .get_map_ofs = drm_core_get_map_ofs,
 506         .get_reg_ofs = drm_core_get_reg_ofs,
 507         .master_create = i915_master_create,
 508         .master_destroy = i915_master_destroy,
 509 #if defined(CONFIG_DEBUG_FS)
 510         .debugfs_init = i915_debugfs_init,
 511         .debugfs_cleanup = i915_debugfs_cleanup,
 512 #endif
 513         .gem_init_object = i915_gem_init_object,
 514         .gem_free_object = i915_gem_free_object,
 515         .gem_vm_ops = &i915_gem_vm_ops,
 516         .ioctls = i915_ioctls,
 517         .fops = {
 518                  .owner = THIS_MODULE,
 519                  .open = drm_open,
 520                  .release = drm_release,
 521                  .unlocked_ioctl = drm_ioctl,
 522                  .mmap = drm_gem_mmap,
 523                  .poll = drm_poll,
 524                  .fasync = drm_fasync,
 525                  .read = drm_read,
 526 #ifdef CONFIG_COMPAT
 527                  .compat_ioctl = i915_compat_ioctl,
 528 #endif
 529         },
 530
 531         .pci_driver = {
 532                  .name = DRIVER_NAME,
 533                  .id_table = pciidlist,
 534                  .probe = i915_pci_probe,
 535                  .remove = i915_pci_remove,
 536                  .driver.pm = &i915_pm_ops,
 537         },
 538
 539         .name = DRIVER_NAME,
 540         .desc = DRIVER_DESC,
 541         .date = DRIVER_DATE,
 542         .major = DRIVER_MAJOR,
 543         .minor = DRIVER_MINOR,
 544         .patchlevel = DRIVER_PATCHLEVEL,
 545 };
 546
 547 static int __init i915_init(void)
 548 {
 549         driver.num_ioctls = i915_max_ioctl;
 550
 551         i915_gem_shrinker_init();
 552
 553         /*
 554          * If CONFIG_DRM_I915_KMS is set, default to KMS unless
 555          * explicitly disabled with the module pararmeter.
 556          *
 557          * Otherwise, just follow the parameter (defaulting to off).
 558          *
 559          * Allow optional vga_text_mode_force boot option to override
 560          * the default behavior.
 561          */
 562 #if defined(CONFIG_DRM_I915_KMS)
 563         if (i915_modeset != 0)
 564                 driver.driver_features |= DRIVER_MODESET;
 565 #endif
 566         if (i915_modeset == 1)
 567                 driver.driver_features |= DRIVER_MODESET;
 568
 569 #ifdef CONFIG_VGA_CONSOLE
 570         if (vgacon_text_force() && i915_modeset == -1)
 571                 driver.driver_features &= ~DRIVER_MODESET;
 572 #endif
 573
 574         return drm_init(&driver);
 575 }
 576
 577 static void __exit i915_exit(void)
 578 {
 579         i915_gem_shrinker_exit();
 580         drm_exit(&driver);
 581 }
 582
 583 module_init(i915_init);
 584 module_exit(i915_exit);
 585
 586 MODULE_AUTHOR(DRIVER_AUTHOR);
 587 MODULE_DESCRIPTION(DRIVER_DESC);
 588 MODULE_LICENSE("GPL and additional rights");