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 extern int intel_agp_enabled;
  53
  54 #define INTEL_VGA_DEVICE(id, info) {            \
  55         .class = PCI_CLASS_DISPLAY_VGA << 8,    \
  56         .class_mask = 0xffff00,                 \
  57         .vendor = 0x8086,                       \
  58         .device = id,                           \
  59         .subvendor = PCI_ANY_ID,                \
  60         .subdevice = PCI_ANY_ID,                \
  61         .driver_data = (unsigned long) info }
  62
  63 const static struct intel_device_info intel_i830_info = {
  64         .is_i8xx = 1, .is_mobile = 1, .cursor_needs_physical = 1,
  65 };
  66
  67 const static struct intel_device_info intel_845g_info = {
  68         .is_i8xx = 1,
  69 };
  70
  71 const static struct intel_device_info intel_i85x_info = {
  72         .is_i8xx = 1, .is_i85x = 1, .is_mobile = 1,
  73         .cursor_needs_physical = 1,
  74 };
  75
  76 const static struct intel_device_info intel_i865g_info = {
  77         .is_i8xx = 1,
  78 };
  79
  80 const static struct intel_device_info intel_i915g_info = {
  81         .is_i915g = 1, .is_i9xx = 1, .cursor_needs_physical = 1,
  82 };
  83 const static struct intel_device_info intel_i915gm_info = {
  84         .is_i9xx = 1,  .is_mobile = 1,
  85         .cursor_needs_physical = 1,
  86 };
  87 const static struct intel_device_info intel_i945g_info = {
  88         .is_i9xx = 1, .has_hotplug = 1, .cursor_needs_physical = 1,
  89 };
  90 const static struct intel_device_info intel_i945gm_info = {
  91         .is_i945gm = 1, .is_i9xx = 1, .is_mobile = 1,
  92         .has_hotplug = 1, .cursor_needs_physical = 1,
  93 };
  94
  95 const static struct intel_device_info intel_i965g_info = {
  96         .is_i965g = 1, .is_i9xx = 1, .has_hotplug = 1,
  97 };
  98
  99 const static struct intel_device_info intel_i965gm_info = {
 100         .is_i965g = 1, .is_mobile = 1, .is_i965gm = 1, .is_i9xx = 1,
 101         .is_mobile = 1, .has_fbc = 1, .has_rc6 = 1,
 102         .has_hotplug = 1,
 103 };
 104
 105 const static struct intel_device_info intel_g33_info = {
 106         .is_g33 = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 107         .has_hotplug = 1,
 108 };
 109
 110 const static struct intel_device_info intel_g45_info = {
 111         .is_i965g = 1, .is_g4x = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 112         .has_pipe_cxsr = 1,
 113         .has_hotplug = 1,
 114 };
 115
 116 const static struct intel_device_info intel_gm45_info = {
 117         .is_i965g = 1, .is_mobile = 1, .is_g4x = 1, .is_i9xx = 1,
 118         .is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1, .has_rc6 = 1,
 119         .has_pipe_cxsr = 1,
 120         .has_hotplug = 1,
 121 };
 122
 123 const static struct intel_device_info intel_pineview_info = {
 124         .is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .is_i9xx = 1,
 125         .need_gfx_hws = 1,
 126         .has_hotplug = 1,
 127 };
 128
 129 const static struct intel_device_info intel_ironlake_d_info = {
 130         .is_ironlake = 1, .is_i965g = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 131         .has_pipe_cxsr = 1,
 132         .has_hotplug = 1,
 133 };
 134
 135 const static struct intel_device_info intel_ironlake_m_info = {
 136         .is_ironlake = 1, .is_mobile = 1, .is_i965g = 1, .is_i9xx = 1,
 137         .need_gfx_hws = 1, .has_rc6 = 1,
 138         .has_hotplug = 1,
 139 };
 140
 141 const static struct intel_device_info intel_sandybridge_d_info = {
 142         .is_i965g = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 143         .has_hotplug = 1, .is_gen6 = 1,
 144 };
 145
 146 const static struct intel_device_info intel_sandybridge_m_info = {
 147         .is_i965g = 1, .is_mobile = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 148         .has_hotplug = 1, .is_gen6 = 1,
 149 };
 150
 151 const static struct pci_device_id pciidlist[] = {
 152         INTEL_VGA_DEVICE(0x3577, &intel_i830_info),
 153         INTEL_VGA_DEVICE(0x2562, &intel_845g_info),
 154         INTEL_VGA_DEVICE(0x3582, &intel_i85x_info),
 155         INTEL_VGA_DEVICE(0x358e, &intel_i85x_info),
 156         INTEL_VGA_DEVICE(0x2572, &intel_i865g_info),
 157         INTEL_VGA_DEVICE(0x2582, &intel_i915g_info),
 158         INTEL_VGA_DEVICE(0x258a, &intel_i915g_info),
 159         INTEL_VGA_DEVICE(0x2592, &intel_i915gm_info),
 160         INTEL_VGA_DEVICE(0x2772, &intel_i945g_info),
 161         INTEL_VGA_DEVICE(0x27a2, &intel_i945gm_info),
 162         INTEL_VGA_DEVICE(0x27ae, &intel_i945gm_info),
 163         INTEL_VGA_DEVICE(0x2972, &intel_i965g_info),
 164         INTEL_VGA_DEVICE(0x2982, &intel_i965g_info),
 165         INTEL_VGA_DEVICE(0x2992, &intel_i965g_info),
 166         INTEL_VGA_DEVICE(0x29a2, &intel_i965g_info),
 167         INTEL_VGA_DEVICE(0x29b2, &intel_g33_info),
 168         INTEL_VGA_DEVICE(0x29c2, &intel_g33_info),
 169         INTEL_VGA_DEVICE(0x29d2, &intel_g33_info),
 170         INTEL_VGA_DEVICE(0x2a02, &intel_i965gm_info),
 171         INTEL_VGA_DEVICE(0x2a12, &intel_i965gm_info),
 172         INTEL_VGA_DEVICE(0x2a42, &intel_gm45_info),
 173         INTEL_VGA_DEVICE(0x2e02, &intel_g45_info),
 174         INTEL_VGA_DEVICE(0x2e12, &intel_g45_info),
 175         INTEL_VGA_DEVICE(0x2e22, &intel_g45_info),
 176         INTEL_VGA_DEVICE(0x2e32, &intel_g45_info),
 177         INTEL_VGA_DEVICE(0x2e42, &intel_g45_info),
 178         INTEL_VGA_DEVICE(0xa001, &intel_pineview_info),
 179         INTEL_VGA_DEVICE(0xa011, &intel_pineview_info),
 180         INTEL_VGA_DEVICE(0x0042, &intel_ironlake_d_info),
 181         INTEL_VGA_DEVICE(0x0046, &intel_ironlake_m_info),
 182         INTEL_VGA_DEVICE(0x0102, &intel_sandybridge_d_info),
 183         INTEL_VGA_DEVICE(0x0106, &intel_sandybridge_m_info),
 184         {0, 0, 0}
 185 };
 186
 187 #if defined(CONFIG_DRM_I915_KMS)
 188 MODULE_DEVICE_TABLE(pci, pciidlist);
 189 #endif
 190
 191 #define INTEL_PCH_DEVICE_ID_MASK        0xff00
 192 #define INTEL_PCH_CPT_DEVICE_ID_TYPE    0x1c00
 193
 194 void intel_detect_pch (struct drm_device *dev)
 195 {
 196         struct drm_i915_private *dev_priv = dev->dev_private;
 197         struct pci_dev *pch;
 198
 199         /*
 200          * The reason to probe ISA bridge instead of Dev31:Fun0 is to
 201          * make graphics device passthrough work easy for VMM, that only
 202          * need to expose ISA bridge to let driver know the real hardware
 203          * underneath. This is a requirement from virtualization team.
 204          */
 205         pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL);
 206         if (pch) {
 207                 if (pch->vendor == PCI_VENDOR_ID_INTEL) {
 208                         int id;
 209                         id = pch->device & INTEL_PCH_DEVICE_ID_MASK;
 210
 211                         if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) {
 212                                 dev_priv->pch_type = PCH_CPT;
 213                                 DRM_DEBUG_KMS("Found CougarPoint PCH\n");
 214                         }
 215                 }
 216                 pci_dev_put(pch);
 217         }
 218 }
 219
 220 static int i915_drm_freeze(struct drm_device *dev)
 221 {
 222         struct drm_i915_private *dev_priv = dev->dev_private;
 223
 224         pci_save_state(dev->pdev);
 225
 226         /* If KMS is active, we do the leavevt stuff here */
 227         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 228                 int error = i915_gem_idle(dev);
 229                 if (error) {
 230                         dev_err(&dev->pdev->dev,
 231                                 "GEM idle failed, resume might fail\n");
 232                         return error;
 233                 }
 234                 drm_irq_uninstall(dev);
 235         }
 236
 237         i915_save_state(dev);
 238
 239         intel_opregion_free(dev, 1);
 240
 241         /* Modeset on resume, not lid events */
 242         dev_priv->modeset_on_lid = 0;
 243
 244         return 0;
 245 }
 246
 247 int i915_suspend(struct drm_device *dev, pm_message_t state)
 248 {
 249         int error;
 250
 251         if (!dev || !dev->dev_private) {
 252                 DRM_ERROR("dev: %p\n", dev);
 253                 DRM_ERROR("DRM not initialized, aborting suspend.\n");
 254                 return -ENODEV;
 255         }
 256
 257         if (state.event == PM_EVENT_PRETHAW)
 258                 return 0;
 259
 260         error = i915_drm_freeze(dev);
 261         if (error)
 262                 return error;
 263
 264         if (state.event == PM_EVENT_SUSPEND) {
 265                 /* Shut down the device */
 266                 pci_disable_device(dev->pdev);
 267                 pci_set_power_state(dev->pdev, PCI_D3hot);
 268         }
 269
 270         return 0;
 271 }
 272
 273 static int i915_drm_thaw(struct drm_device *dev)
 274 {
 275         struct drm_i915_private *dev_priv = dev->dev_private;
 276         int error = 0;
 277
 278         i915_restore_state(dev);
 279
 280         intel_opregion_init(dev, 1);
 281
 282         /* KMS EnterVT equivalent */
 283         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 284                 mutex_lock(&dev->struct_mutex);
 285                 dev_priv->mm.suspended = 0;
 286
 287                 error = i915_gem_init_ringbuffer(dev);
 288                 mutex_unlock(&dev->struct_mutex);
 289
 290                 drm_irq_install(dev);
 291
 292                 /* Resume the modeset for every activated CRTC */
 293                 drm_helper_resume_force_mode(dev);
 294         }
 295
 296         dev_priv->modeset_on_lid = 0;
 297
 298         return error;
 299 }
 300
 301 int i915_resume(struct drm_device *dev)
 302 {
 303         if (pci_enable_device(dev->pdev))
 304                 return -EIO;
 305
 306         pci_set_master(dev->pdev);
 307
 308         return i915_drm_thaw(dev);
 309 }
 310
 311 /**
 312  * i965_reset - reset chip after a hang
 313  * @dev: drm device to reset
 314  * @flags: reset domains
 315  *
 316  * Reset the chip.  Useful if a hang is detected. Returns zero on successful
 317  * reset or otherwise an error code.
 318  *
 319  * Procedure is fairly simple:
 320  *   - reset the chip using the reset reg
 321  *   - re-init context state
 322  *   - re-init hardware status page
 323  *   - re-init ring buffer
 324  *   - re-init interrupt state
 325  *   - re-init display
 326  */
 327 int i965_reset(struct drm_device *dev, u8 flags)
 328 {
 329         drm_i915_private_t *dev_priv = dev->dev_private;
 330         unsigned long timeout;
 331         u8 gdrst;
 332         /*
 333          * We really should only reset the display subsystem if we actually
 334          * need to
 335          */
 336         bool need_display = true;
 337
 338         mutex_lock(&dev->struct_mutex);
 339
 340         /*
 341          * Clear request list
 342          */
 343         i915_gem_retire_requests(dev);
 344
 345         if (need_display)
 346                 i915_save_display(dev);
 347
 348         if (IS_I965G(dev) || IS_G4X(dev)) {
 349                 /*
 350                  * Set the domains we want to reset, then the reset bit (bit 0).
 351                  * Clear the reset bit after a while and wait for hardware status
 352                  * bit (bit 1) to be set
 353                  */
 354                 pci_read_config_byte(dev->pdev, GDRST, &gdrst);
 355                 pci_write_config_byte(dev->pdev, GDRST, gdrst | flags | ((flags == GDRST_FULL) ? 0x1 : 0x0));
 356                 udelay(50);
 357                 pci_write_config_byte(dev->pdev, GDRST, gdrst & 0xfe);
 358
 359                 /* ...we don't want to loop forever though, 500ms should be plenty */
 360                timeout = jiffies + msecs_to_jiffies(500);
 361                 do {
 362                         udelay(100);
 363                         pci_read_config_byte(dev->pdev, GDRST, &gdrst);
 364                 } while ((gdrst & 0x1) && time_after(timeout, jiffies));
 365
 366                 if (gdrst & 0x1) {
 367                         WARN(true, "i915: Failed to reset chip\n");
 368                         mutex_unlock(&dev->struct_mutex);
 369                         return -EIO;
 370                 }
 371         } else {
 372                 DRM_ERROR("Error occurred. Don't know how to reset this chip.\n");
 373                 return -ENODEV;
 374         }
 375
 376         /* Ok, now get things going again... */
 377
 378         /*
 379          * Everything depends on having the GTT running, so we need to start
 380          * there.  Fortunately we don't need to do this unless we reset the
 381          * chip at a PCI level.
 382          *
 383          * Next we need to restore the context, but we don't use those
 384          * yet either...
 385          *
 386          * Ring buffer needs to be re-initialized in the KMS case, or if X
 387          * was running at the time of the reset (i.e. we weren't VT
 388          * switched away).
 389          */
 390         if (drm_core_check_feature(dev, DRIVER_MODESET) ||
 391             !dev_priv->mm.suspended) {
 392                 drm_i915_ring_buffer_t *ring = &dev_priv->ring;
 393                 struct drm_gem_object *obj = ring->ring_obj;
 394                 struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
 395                 dev_priv->mm.suspended = 0;
 396
 397                 /* Stop the ring if it's running. */
 398                 I915_WRITE(PRB0_CTL, 0);
 399                 I915_WRITE(PRB0_TAIL, 0);
 400                 I915_WRITE(PRB0_HEAD, 0);
 401
 402                 /* Initialize the ring. */
 403                 I915_WRITE(PRB0_START, obj_priv->gtt_offset);
 404                 I915_WRITE(PRB0_CTL,
 405                            ((obj->size - 4096) & RING_NR_PAGES) |
 406                            RING_NO_REPORT |
 407                            RING_VALID);
 408                 if (!drm_core_check_feature(dev, DRIVER_MODESET))
 409                         i915_kernel_lost_context(dev);
 410                 else {
 411                         ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 412                         ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 413                         ring->space = ring->head - (ring->tail + 8);
 414                         if (ring->space < 0)
 415                                 ring->space += ring->Size;
 416                 }
 417
 418                 mutex_unlock(&dev->struct_mutex);
 419                 drm_irq_uninstall(dev);
 420                 drm_irq_install(dev);
 421                 mutex_lock(&dev->struct_mutex);
 422         }
 423
 424         /*
 425          * Display needs restore too...
 426          */
 427         if (need_display)
 428                 i915_restore_display(dev);
 429
 430         mutex_unlock(&dev->struct_mutex);
 431         return 0;
 432 }
 433
 434
 435 static int __devinit
 436 i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 437 {
 438         return drm_get_dev(pdev, ent, &driver);
 439 }
 440
 441 static void
 442 i915_pci_remove(struct pci_dev *pdev)
 443 {
 444         struct drm_device *dev = pci_get_drvdata(pdev);
 445
 446         drm_put_dev(dev);
 447 }
 448
 449 static int i915_pm_suspend(struct device *dev)
 450 {
 451         struct pci_dev *pdev = to_pci_dev(dev);
 452         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 453         int error;
 454
 455         if (!drm_dev || !drm_dev->dev_private) {
 456                 dev_err(dev, "DRM not initialized, aborting suspend.\n");
 457                 return -ENODEV;
 458         }
 459
 460         error = i915_drm_freeze(drm_dev);
 461         if (error)
 462                 return error;
 463
 464         pci_disable_device(pdev);
 465         pci_set_power_state(pdev, PCI_D3hot);
 466
 467         return 0;
 468 }
 469
 470 static int i915_pm_resume(struct device *dev)
 471 {
 472         struct pci_dev *pdev = to_pci_dev(dev);
 473         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 474
 475         return i915_resume(drm_dev);
 476 }
 477
 478 static int i915_pm_freeze(struct device *dev)
 479 {
 480         struct pci_dev *pdev = to_pci_dev(dev);
 481         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 482
 483         if (!drm_dev || !drm_dev->dev_private) {
 484                 dev_err(dev, "DRM not initialized, aborting suspend.\n");
 485                 return -ENODEV;
 486         }
 487
 488         return i915_drm_freeze(drm_dev);
 489 }
 490
 491 static int i915_pm_thaw(struct device *dev)
 492 {
 493         struct pci_dev *pdev = to_pci_dev(dev);
 494         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 495
 496         return i915_drm_thaw(drm_dev);
 497 }
 498
 499 static int i915_pm_poweroff(struct device *dev)
 500 {
 501         struct pci_dev *pdev = to_pci_dev(dev);
 502         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 503
 504         return i915_drm_freeze(drm_dev);
 505 }
 506
 507 const struct dev_pm_ops i915_pm_ops = {
 508      .suspend = i915_pm_suspend,
 509      .resume = i915_pm_resume,
 510      .freeze = i915_pm_freeze,
 511      .thaw = i915_pm_thaw,
 512      .poweroff = i915_pm_poweroff,
 513      .restore = i915_pm_resume,
 514 };
 515
 516 static struct vm_operations_struct i915_gem_vm_ops = {
 517         .fault = i915_gem_fault,
 518         .open = drm_gem_vm_open,
 519         .close = drm_gem_vm_close,
 520 };
 521
 522 static struct drm_driver driver = {
 523         /* don't use mtrr's here, the Xserver or user space app should
 524          * deal with them for intel hardware.
 525          */
 526         .driver_features =
 527             DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/
 528             DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM,
 529         .load = i915_driver_load,
 530         .unload = i915_driver_unload,
 531         .open = i915_driver_open,
 532         .lastclose = i915_driver_lastclose,
 533         .preclose = i915_driver_preclose,
 534         .postclose = i915_driver_postclose,
 535
 536         /* Used in place of i915_pm_ops for non-DRIVER_MODESET */
 537         .suspend = i915_suspend,
 538         .resume = i915_resume,
 539
 540         .device_is_agp = i915_driver_device_is_agp,
 541         .enable_vblank = i915_enable_vblank,
 542         .disable_vblank = i915_disable_vblank,
 543         .irq_preinstall = i915_driver_irq_preinstall,
 544         .irq_postinstall = i915_driver_irq_postinstall,
 545         .irq_uninstall = i915_driver_irq_uninstall,
 546         .irq_handler = i915_driver_irq_handler,
 547         .reclaim_buffers = drm_core_reclaim_buffers,
 548         .get_map_ofs = drm_core_get_map_ofs,
 549         .get_reg_ofs = drm_core_get_reg_ofs,
 550         .master_create = i915_master_create,
 551         .master_destroy = i915_master_destroy,
 552 #if defined(CONFIG_DEBUG_FS)
 553         .debugfs_init = i915_debugfs_init,
 554         .debugfs_cleanup = i915_debugfs_cleanup,
 555 #endif
 556         .gem_init_object = i915_gem_init_object,
 557         .gem_free_object = i915_gem_free_object,
 558         .gem_vm_ops = &i915_gem_vm_ops,
 559         .ioctls = i915_ioctls,
 560         .fops = {
 561                  .owner = THIS_MODULE,
 562                  .open = drm_open,
 563                  .release = drm_release,
 564                  .unlocked_ioctl = drm_ioctl,
 565                  .mmap = drm_gem_mmap,
 566                  .poll = drm_poll,
 567                  .fasync = drm_fasync,
 568                  .read = drm_read,
 569 #ifdef CONFIG_COMPAT
 570                  .compat_ioctl = i915_compat_ioctl,
 571 #endif
 572         },
 573
 574         .pci_driver = {
 575                  .name = DRIVER_NAME,
 576                  .id_table = pciidlist,
 577                  .probe = i915_pci_probe,
 578                  .remove = i915_pci_remove,
 579                  .driver.pm = &i915_pm_ops,
 580         },
 581
 582         .name = DRIVER_NAME,
 583         .desc = DRIVER_DESC,
 584         .date = DRIVER_DATE,
 585         .major = DRIVER_MAJOR,
 586         .minor = DRIVER_MINOR,
 587         .patchlevel = DRIVER_PATCHLEVEL,
 588 };
 589
 590 static int __init i915_init(void)
 591 {
 592         if (!intel_agp_enabled) {
 593                 DRM_ERROR("drm/i915 can't work without intel_agp module!\n");
 594                 return -ENODEV;
 595         }
 596
 597         driver.num_ioctls = i915_max_ioctl;
 598
 599         i915_gem_shrinker_init();
 600
 601         /*
 602          * If CONFIG_DRM_I915_KMS is set, default to KMS unless
 603          * explicitly disabled with the module pararmeter.
 604          *
 605          * Otherwise, just follow the parameter (defaulting to off).
 606          *
 607          * Allow optional vga_text_mode_force boot option to override
 608          * the default behavior.
 609          */
 610 #if defined(CONFIG_DRM_I915_KMS)
 611         if (i915_modeset != 0)
 612                 driver.driver_features |= DRIVER_MODESET;
 613 #endif
 614         if (i915_modeset == 1)
 615                 driver.driver_features |= DRIVER_MODESET;
 616
 617 #ifdef CONFIG_VGA_CONSOLE
 618         if (vgacon_text_force() && i915_modeset == -1)
 619                 driver.driver_features &= ~DRIVER_MODESET;
 620 #endif
 621
 622         if (!(driver.driver_features & DRIVER_MODESET)) {
 623                 driver.suspend = i915_suspend;
 624                 driver.resume = i915_resume;
 625         }
 626
 627         return drm_init(&driver);
 628 }
 629
 630 static void __exit i915_exit(void)
 631 {
 632         i915_gem_shrinker_exit();
 633         drm_exit(&driver);
 634 }
 635
 636 module_init(i915_init);
 637 module_exit(i915_exit);
 638
 639 MODULE_AUTHOR(DRIVER_AUTHOR);
 640 MODULE_DESCRIPTION(DRIVER_DESC);
 641 MODULE_LICENSE("GPL and additional rights");