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         .has_pipe_cxsr = 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_suspend(struct drm_device *dev, pm_message_t state)
 178 {
 179         struct drm_i915_private *dev_priv = dev->dev_private;
 180
 181         if (!dev || !dev_priv) {
 182                 DRM_ERROR("dev: %p, dev_priv: %p\n", dev, dev_priv);
 183                 DRM_ERROR("DRM not initialized, aborting suspend.\n");
 184                 return -ENODEV;
 185         }
 186
 187         if (state.event == PM_EVENT_PRETHAW)
 188                 return 0;
 189
 190         pci_save_state(dev->pdev);
 191
 192         /* If KMS is active, we do the leavevt stuff here */
 193         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 194                 if (i915_gem_idle(dev))
 195                         dev_err(&dev->pdev->dev,
 196                                 "GEM idle failed, resume may fail\n");
 197                 drm_irq_uninstall(dev);
 198         }
 199
 200         i915_save_state(dev);
 201
 202         intel_opregion_free(dev, 1);
 203
 204         if (state.event == PM_EVENT_SUSPEND) {
 205                 /* Shut down the device */
 206                 pci_disable_device(dev->pdev);
 207                 pci_set_power_state(dev->pdev, PCI_D3hot);
 208         }
 209
 210         /* Modeset on resume, not lid events */
 211         dev_priv->modeset_on_lid = 0;
 212
 213         return 0;
 214 }
 215
 216 static int i915_resume(struct drm_device *dev)
 217 {
 218         struct drm_i915_private *dev_priv = dev->dev_private;
 219         int ret = 0;
 220
 221         if (pci_enable_device(dev->pdev))
 222                 return -1;
 223         pci_set_master(dev->pdev);
 224
 225         i915_restore_state(dev);
 226
 227         intel_opregion_init(dev, 1);
 228
 229         /* KMS EnterVT equivalent */
 230         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 231                 mutex_lock(&dev->struct_mutex);
 232                 dev_priv->mm.suspended = 0;
 233
 234                 ret = i915_gem_init_ringbuffer(dev);
 235                 if (ret != 0)
 236                         ret = -1;
 237                 mutex_unlock(&dev->struct_mutex);
 238
 239                 drm_irq_install(dev);
 240         }
 241         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 242                 /* Resume the modeset for every activated CRTC */
 243                 drm_helper_resume_force_mode(dev);
 244         }
 245
 246         dev_priv->modeset_on_lid = 0;
 247
 248         return ret;
 249 }
 250
 251 /**
 252  * i965_reset - reset chip after a hang
 253  * @dev: drm device to reset
 254  * @flags: reset domains
 255  *
 256  * Reset the chip.  Useful if a hang is detected. Returns zero on successful
 257  * reset or otherwise an error code.
 258  *
 259  * Procedure is fairly simple:
 260  *   - reset the chip using the reset reg
 261  *   - re-init context state
 262  *   - re-init hardware status page
 263  *   - re-init ring buffer
 264  *   - re-init interrupt state
 265  *   - re-init display
 266  */
 267 int i965_reset(struct drm_device *dev, u8 flags)
 268 {
 269         drm_i915_private_t *dev_priv = dev->dev_private;
 270         unsigned long timeout;
 271         u8 gdrst;
 272         /*
 273          * We really should only reset the display subsystem if we actually
 274          * need to
 275          */
 276         bool need_display = true;
 277
 278         mutex_lock(&dev->struct_mutex);
 279
 280         /*
 281          * Clear request list
 282          */
 283         i915_gem_retire_requests(dev);
 284
 285         if (need_display)
 286                 i915_save_display(dev);
 287
 288         if (IS_I965G(dev) || IS_G4X(dev)) {
 289                 /*
 290                  * Set the domains we want to reset, then the reset bit (bit 0).
 291                  * Clear the reset bit after a while and wait for hardware status
 292                  * bit (bit 1) to be set
 293                  */
 294                 pci_read_config_byte(dev->pdev, GDRST, &gdrst);
 295                 pci_write_config_byte(dev->pdev, GDRST, gdrst | flags | ((flags == GDRST_FULL) ? 0x1 : 0x0));
 296                 udelay(50);
 297                 pci_write_config_byte(dev->pdev, GDRST, gdrst & 0xfe);
 298
 299                 /* ...we don't want to loop forever though, 500ms should be plenty */
 300                timeout = jiffies + msecs_to_jiffies(500);
 301                 do {
 302                         udelay(100);
 303                         pci_read_config_byte(dev->pdev, GDRST, &gdrst);
 304                 } while ((gdrst & 0x1) && time_after(timeout, jiffies));
 305
 306                 if (gdrst & 0x1) {
 307                         WARN(true, "i915: Failed to reset chip\n");
 308                         mutex_unlock(&dev->struct_mutex);
 309                         return -EIO;
 310                 }
 311         } else {
 312                 DRM_ERROR("Error occurred. Don't know how to reset this chip.\n");
 313                 return -ENODEV;
 314         }
 315
 316         /* Ok, now get things going again... */
 317
 318         /*
 319          * Everything depends on having the GTT running, so we need to start
 320          * there.  Fortunately we don't need to do this unless we reset the
 321          * chip at a PCI level.
 322          *
 323          * Next we need to restore the context, but we don't use those
 324          * yet either...
 325          *
 326          * Ring buffer needs to be re-initialized in the KMS case, or if X
 327          * was running at the time of the reset (i.e. we weren't VT
 328          * switched away).
 329          */
 330         if (drm_core_check_feature(dev, DRIVER_MODESET) ||
 331             !dev_priv->mm.suspended) {
 332                 drm_i915_ring_buffer_t *ring = &dev_priv->ring;
 333                 struct drm_gem_object *obj = ring->ring_obj;
 334                 struct drm_i915_gem_object *obj_priv = obj->driver_private;
 335                 dev_priv->mm.suspended = 0;
 336
 337                 /* Stop the ring if it's running. */
 338                 I915_WRITE(PRB0_CTL, 0);
 339                 I915_WRITE(PRB0_TAIL, 0);
 340                 I915_WRITE(PRB0_HEAD, 0);
 341
 342                 /* Initialize the ring. */
 343                 I915_WRITE(PRB0_START, obj_priv->gtt_offset);
 344                 I915_WRITE(PRB0_CTL,
 345                            ((obj->size - 4096) & RING_NR_PAGES) |
 346                            RING_NO_REPORT |
 347                            RING_VALID);
 348                 if (!drm_core_check_feature(dev, DRIVER_MODESET))
 349                         i915_kernel_lost_context(dev);
 350                 else {
 351                         ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 352                         ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 353                         ring->space = ring->head - (ring->tail + 8);
 354                         if (ring->space < 0)
 355                                 ring->space += ring->Size;
 356                 }
 357
 358                 mutex_unlock(&dev->struct_mutex);
 359                 drm_irq_uninstall(dev);
 360                 drm_irq_install(dev);
 361                 mutex_lock(&dev->struct_mutex);
 362         }
 363
 364         /*
 365          * Display needs restore too...
 366          */
 367         if (need_display)
 368                 i915_restore_display(dev);
 369
 370         mutex_unlock(&dev->struct_mutex);
 371         return 0;
 372 }
 373
 374
 375 static int __devinit
 376 i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 377 {
 378         return drm_get_dev(pdev, ent, &driver);
 379 }
 380
 381 static void
 382 i915_pci_remove(struct pci_dev *pdev)
 383 {
 384         struct drm_device *dev = pci_get_drvdata(pdev);
 385
 386         drm_put_dev(dev);
 387 }
 388
 389 static int
 390 i915_pci_suspend(struct pci_dev *pdev, pm_message_t state)
 391 {
 392         struct drm_device *dev = pci_get_drvdata(pdev);
 393
 394         return i915_suspend(dev, state);
 395 }
 396
 397 static int
 398 i915_pci_resume(struct pci_dev *pdev)
 399 {
 400         struct drm_device *dev = pci_get_drvdata(pdev);
 401
 402         return i915_resume(dev);
 403 }
 404
 405 static int
 406 i915_pm_suspend(struct device *dev)
 407 {
 408         return i915_pci_suspend(to_pci_dev(dev), PMSG_SUSPEND);
 409 }
 410
 411 static int
 412 i915_pm_resume(struct device *dev)
 413 {
 414         return i915_pci_resume(to_pci_dev(dev));
 415 }
 416
 417 static int
 418 i915_pm_freeze(struct device *dev)
 419 {
 420         return i915_pci_suspend(to_pci_dev(dev), PMSG_FREEZE);
 421 }
 422
 423 static int
 424 i915_pm_thaw(struct device *dev)
 425 {
 426         /* thaw during hibernate, do nothing! */
 427         return 0;
 428 }
 429
 430 static int
 431 i915_pm_poweroff(struct device *dev)
 432 {
 433         return i915_pci_suspend(to_pci_dev(dev), PMSG_HIBERNATE);
 434 }
 435
 436 static int
 437 i915_pm_restore(struct device *dev)
 438 {
 439         return i915_pci_resume(to_pci_dev(dev));
 440 }
 441
 442 const struct dev_pm_ops i915_pm_ops = {
 443      .suspend = i915_pm_suspend,
 444      .resume = i915_pm_resume,
 445      .freeze = i915_pm_freeze,
 446      .thaw = i915_pm_thaw,
 447      .poweroff = i915_pm_poweroff,
 448      .restore = i915_pm_restore,
 449 };
 450
 451 static struct vm_operations_struct i915_gem_vm_ops = {
 452         .fault = i915_gem_fault,
 453         .open = drm_gem_vm_open,
 454         .close = drm_gem_vm_close,
 455 };
 456
 457 static struct drm_driver driver = {
 458         /* don't use mtrr's here, the Xserver or user space app should
 459          * deal with them for intel hardware.
 460          */
 461         .driver_features =
 462             DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/
 463             DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM,
 464         .load = i915_driver_load,
 465         .unload = i915_driver_unload,
 466         .open = i915_driver_open,
 467         .lastclose = i915_driver_lastclose,
 468         .preclose = i915_driver_preclose,
 469         .postclose = i915_driver_postclose,
 470
 471         /* Used in place of i915_pm_ops for non-DRIVER_MODESET */
 472         .suspend = i915_suspend,
 473         .resume = i915_resume,
 474
 475         .device_is_agp = i915_driver_device_is_agp,
 476         .enable_vblank = i915_enable_vblank,
 477         .disable_vblank = i915_disable_vblank,
 478         .irq_preinstall = i915_driver_irq_preinstall,
 479         .irq_postinstall = i915_driver_irq_postinstall,
 480         .irq_uninstall = i915_driver_irq_uninstall,
 481         .irq_handler = i915_driver_irq_handler,
 482         .reclaim_buffers = drm_core_reclaim_buffers,
 483         .get_map_ofs = drm_core_get_map_ofs,
 484         .get_reg_ofs = drm_core_get_reg_ofs,
 485         .master_create = i915_master_create,
 486         .master_destroy = i915_master_destroy,
 487 #if defined(CONFIG_DEBUG_FS)
 488         .debugfs_init = i915_debugfs_init,
 489         .debugfs_cleanup = i915_debugfs_cleanup,
 490 #endif
 491         .gem_init_object = i915_gem_init_object,
 492         .gem_free_object = i915_gem_free_object,
 493         .gem_vm_ops = &i915_gem_vm_ops,
 494         .ioctls = i915_ioctls,
 495         .fops = {
 496                  .owner = THIS_MODULE,
 497                  .open = drm_open,
 498                  .release = drm_release,
 499                  .unlocked_ioctl = drm_ioctl,
 500                  .mmap = drm_gem_mmap,
 501                  .poll = drm_poll,
 502                  .fasync = drm_fasync,
 503                  .read = drm_read,
 504 #ifdef CONFIG_COMPAT
 505                  .compat_ioctl = i915_compat_ioctl,
 506 #endif
 507         },
 508
 509         .pci_driver = {
 510                  .name = DRIVER_NAME,
 511                  .id_table = pciidlist,
 512                  .probe = i915_pci_probe,
 513                  .remove = i915_pci_remove,
 514                  .driver.pm = &i915_pm_ops,
 515         },
 516
 517         .name = DRIVER_NAME,
 518         .desc = DRIVER_DESC,
 519         .date = DRIVER_DATE,
 520         .major = DRIVER_MAJOR,
 521         .minor = DRIVER_MINOR,
 522         .patchlevel = DRIVER_PATCHLEVEL,
 523 };
 524
 525 static int __init i915_init(void)
 526 {
 527         driver.num_ioctls = i915_max_ioctl;
 528
 529         i915_gem_shrinker_init();
 530
 531         /*
 532          * If CONFIG_DRM_I915_KMS is set, default to KMS unless
 533          * explicitly disabled with the module pararmeter.
 534          *
 535          * Otherwise, just follow the parameter (defaulting to off).
 536          *
 537          * Allow optional vga_text_mode_force boot option to override
 538          * the default behavior.
 539          */
 540 #if defined(CONFIG_DRM_I915_KMS)
 541         if (i915_modeset != 0)
 542                 driver.driver_features |= DRIVER_MODESET;
 543 #endif
 544         if (i915_modeset == 1)
 545                 driver.driver_features |= DRIVER_MODESET;
 546
 547 #ifdef CONFIG_VGA_CONSOLE
 548         if (vgacon_text_force() && i915_modeset == -1)
 549                 driver.driver_features &= ~DRIVER_MODESET;
 550 #endif
 551
 552         return drm_init(&driver);
 553 }
 554
 555 static void __exit i915_exit(void)
 556 {
 557         i915_gem_shrinker_exit();
 558         drm_exit(&driver);
 559 }
 560
 561 module_init(i915_init);
 562 module_exit(i915_exit);
 563
 564 MODULE_AUTHOR(DRIVER_AUTHOR);
 565 MODULE_DESCRIPTION(DRIVER_DESC);
 566 MODULE_LICENSE("GPL and additional rights");