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 static const struct intel_device_info intel_i830_info = {
  64         .gen = 2, .is_i8xx = 1, .is_mobile = 1, .cursor_needs_physical = 1,
  65 };
  66
  67 static const struct intel_device_info intel_845g_info = {
  68         .gen = 2, .is_i8xx = 1,
  69 };
  70
  71 static const struct intel_device_info intel_i85x_info = {
  72         .gen = 2, .is_i8xx = 1, .is_i85x = 1, .is_mobile = 1,
  73         .cursor_needs_physical = 1,
  74 };
  75
  76 static const struct intel_device_info intel_i865g_info = {
  77         .gen = 2, .is_i8xx = 1,
  78 };
  79
  80 static const struct intel_device_info intel_i915g_info = {
  81         .gen = 3, .is_i915g = 1, .is_i9xx = 1, .cursor_needs_physical = 1,
  82 };
  83 static const struct intel_device_info intel_i915gm_info = {
  84         .gen = 3, .is_i9xx = 1,  .is_mobile = 1,
  85         .cursor_needs_physical = 1,
  86 };
  87 static const struct intel_device_info intel_i945g_info = {
  88         .gen = 3, .is_i9xx = 1, .has_hotplug = 1, .cursor_needs_physical = 1,
  89 };
  90 static const struct intel_device_info intel_i945gm_info = {
  91         .gen = 3, .is_i945gm = 1, .is_i9xx = 1, .is_mobile = 1,
  92         .has_hotplug = 1, .cursor_needs_physical = 1,
  93 };
  94
  95 static const struct intel_device_info intel_i965g_info = {
  96         .gen = 4, .is_broadwater = 1, .is_i965g = 1, .is_i9xx = 1,
  97         .has_hotplug = 1,
  98 };
  99
 100 static const struct intel_device_info intel_i965gm_info = {
 101         .gen = 4, .is_crestline = 1, .is_i965g = 1, .is_i965gm = 1, .is_i9xx = 1,
 102         .is_mobile = 1, .has_fbc = 1, .has_rc6 = 1, .has_hotplug = 1,
 103 };
 104
 105 static const struct intel_device_info intel_g33_info = {
 106         .gen = 3, .is_g33 = 1, .is_i9xx = 1,
 107         .need_gfx_hws = 1, .has_hotplug = 1,
 108 };
 109
 110 static const struct intel_device_info intel_g45_info = {
 111         .gen = 4, .is_i965g = 1, .is_g4x = 1, .is_i9xx = 1, .need_gfx_hws = 1,
 112         .has_pipe_cxsr = 1, .has_hotplug = 1,
 113 };
 114
 115 static const struct intel_device_info intel_gm45_info = {
 116         .gen = 4, .is_i965g = 1, .is_g4x = 1, .is_i9xx = 1,
 117         .is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1, .has_rc6 = 1,
 118         .has_pipe_cxsr = 1, .has_hotplug = 1,
 119 };
 120
 121 static const struct intel_device_info intel_pineview_info = {
 122         .gen = 3, .is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .is_i9xx = 1,
 123         .need_gfx_hws = 1, .has_hotplug = 1,
 124 };
 125
 126 static const struct intel_device_info intel_ironlake_d_info = {
 127         .gen = 5, .is_ironlake = 1, .is_i965g = 1, .is_i9xx = 1,
 128         .need_gfx_hws = 1, .has_pipe_cxsr = 1, .has_hotplug = 1,
 129 };
 130
 131 static const struct intel_device_info intel_ironlake_m_info = {
 132         .gen = 5, .is_ironlake = 1, .is_mobile = 1, .is_i965g = 1, .is_i9xx = 1,
 133         .need_gfx_hws = 1, .has_fbc = 1, .has_rc6 = 1, .has_hotplug = 1,
 134 };
 135
 136 static const struct intel_device_info intel_sandybridge_d_info = {
 137         .gen = 6, .is_i965g = 1, .is_i9xx = 1,
 138         .need_gfx_hws = 1, .has_hotplug = 1,
 139 };
 140
 141 static const struct intel_device_info intel_sandybridge_m_info = {
 142         .gen = 6, .is_i965g = 1, .is_mobile = 1, .is_i9xx = 1,
 143         .need_gfx_hws = 1, .has_hotplug = 1,
 144 };
 145
 146 static const struct pci_device_id pciidlist[] = {               /* aka */
 147         INTEL_VGA_DEVICE(0x3577, &intel_i830_info),             /* I830_M */
 148         INTEL_VGA_DEVICE(0x2562, &intel_845g_info),             /* 845_G */
 149         INTEL_VGA_DEVICE(0x3582, &intel_i85x_info),             /* I855_GM */
 150         INTEL_VGA_DEVICE(0x358e, &intel_i85x_info),
 151         INTEL_VGA_DEVICE(0x2572, &intel_i865g_info),            /* I865_G */
 152         INTEL_VGA_DEVICE(0x2582, &intel_i915g_info),            /* I915_G */
 153         INTEL_VGA_DEVICE(0x258a, &intel_i915g_info),            /* E7221_G */
 154         INTEL_VGA_DEVICE(0x2592, &intel_i915gm_info),           /* I915_GM */
 155         INTEL_VGA_DEVICE(0x2772, &intel_i945g_info),            /* I945_G */
 156         INTEL_VGA_DEVICE(0x27a2, &intel_i945gm_info),           /* I945_GM */
 157         INTEL_VGA_DEVICE(0x27ae, &intel_i945gm_info),           /* I945_GME */
 158         INTEL_VGA_DEVICE(0x2972, &intel_i965g_info),            /* I946_GZ */
 159         INTEL_VGA_DEVICE(0x2982, &intel_i965g_info),            /* G35_G */
 160         INTEL_VGA_DEVICE(0x2992, &intel_i965g_info),            /* I965_Q */
 161         INTEL_VGA_DEVICE(0x29a2, &intel_i965g_info),            /* I965_G */
 162         INTEL_VGA_DEVICE(0x29b2, &intel_g33_info),              /* Q35_G */
 163         INTEL_VGA_DEVICE(0x29c2, &intel_g33_info),              /* G33_G */
 164         INTEL_VGA_DEVICE(0x29d2, &intel_g33_info),              /* Q33_G */
 165         INTEL_VGA_DEVICE(0x2a02, &intel_i965gm_info),           /* I965_GM */
 166         INTEL_VGA_DEVICE(0x2a12, &intel_i965gm_info),           /* I965_GME */
 167         INTEL_VGA_DEVICE(0x2a42, &intel_gm45_info),             /* GM45_G */
 168         INTEL_VGA_DEVICE(0x2e02, &intel_g45_info),              /* IGD_E_G */
 169         INTEL_VGA_DEVICE(0x2e12, &intel_g45_info),              /* Q45_G */
 170         INTEL_VGA_DEVICE(0x2e22, &intel_g45_info),              /* G45_G */
 171         INTEL_VGA_DEVICE(0x2e32, &intel_g45_info),              /* G41_G */
 172         INTEL_VGA_DEVICE(0x2e42, &intel_g45_info),              /* B43_G */
 173         INTEL_VGA_DEVICE(0xa001, &intel_pineview_info),
 174         INTEL_VGA_DEVICE(0xa011, &intel_pineview_info),
 175         INTEL_VGA_DEVICE(0x0042, &intel_ironlake_d_info),
 176         INTEL_VGA_DEVICE(0x0046, &intel_ironlake_m_info),
 177         INTEL_VGA_DEVICE(0x0102, &intel_sandybridge_d_info),
 178         INTEL_VGA_DEVICE(0x0106, &intel_sandybridge_m_info),
 179         INTEL_VGA_DEVICE(0x0126, &intel_sandybridge_m_info),
 180         {0, 0, 0}
 181 };
 182
 183 #if defined(CONFIG_DRM_I915_KMS)
 184 MODULE_DEVICE_TABLE(pci, pciidlist);
 185 #endif
 186
 187 #define INTEL_PCH_DEVICE_ID_MASK        0xff00
 188 #define INTEL_PCH_CPT_DEVICE_ID_TYPE    0x1c00
 189
 190 void intel_detect_pch (struct drm_device *dev)
 191 {
 192         struct drm_i915_private *dev_priv = dev->dev_private;
 193         struct pci_dev *pch;
 194
 195         /*
 196          * The reason to probe ISA bridge instead of Dev31:Fun0 is to
 197          * make graphics device passthrough work easy for VMM, that only
 198          * need to expose ISA bridge to let driver know the real hardware
 199          * underneath. This is a requirement from virtualization team.
 200          */
 201         pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL);
 202         if (pch) {
 203                 if (pch->vendor == PCI_VENDOR_ID_INTEL) {
 204                         int id;
 205                         id = pch->device & INTEL_PCH_DEVICE_ID_MASK;
 206
 207                         if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) {
 208                                 dev_priv->pch_type = PCH_CPT;
 209                                 DRM_DEBUG_KMS("Found CougarPoint PCH\n");
 210                         }
 211                 }
 212                 pci_dev_put(pch);
 213         }
 214 }
 215
 216 static int i915_drm_freeze(struct drm_device *dev)
 217 {
 218         struct drm_i915_private *dev_priv = dev->dev_private;
 219
 220         pci_save_state(dev->pdev);
 221
 222         /* If KMS is active, we do the leavevt stuff here */
 223         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 224                 int error = i915_gem_idle(dev);
 225                 if (error) {
 226                         dev_err(&dev->pdev->dev,
 227                                 "GEM idle failed, resume might fail\n");
 228                         return error;
 229                 }
 230                 drm_irq_uninstall(dev);
 231         }
 232
 233         i915_save_state(dev);
 234
 235         intel_opregion_free(dev, 1);
 236
 237         /* Modeset on resume, not lid events */
 238         dev_priv->modeset_on_lid = 0;
 239
 240         return 0;
 241 }
 242
 243 int i915_suspend(struct drm_device *dev, pm_message_t state)
 244 {
 245         int error;
 246
 247         if (!dev || !dev->dev_private) {
 248                 DRM_ERROR("dev: %p\n", dev);
 249                 DRM_ERROR("DRM not initialized, aborting suspend.\n");
 250                 return -ENODEV;
 251         }
 252
 253         if (state.event == PM_EVENT_PRETHAW)
 254                 return 0;
 255
 256         error = i915_drm_freeze(dev);
 257         if (error)
 258                 return error;
 259
 260         if (state.event == PM_EVENT_SUSPEND) {
 261                 /* Shut down the device */
 262                 pci_disable_device(dev->pdev);
 263                 pci_set_power_state(dev->pdev, PCI_D3hot);
 264         }
 265
 266         return 0;
 267 }
 268
 269 static int i915_drm_thaw(struct drm_device *dev)
 270 {
 271         struct drm_i915_private *dev_priv = dev->dev_private;
 272         int error = 0;
 273
 274         i915_restore_state(dev);
 275
 276         intel_opregion_init(dev, 1);
 277
 278         /* KMS EnterVT equivalent */
 279         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 280                 mutex_lock(&dev->struct_mutex);
 281                 dev_priv->mm.suspended = 0;
 282
 283                 error = i915_gem_init_ringbuffer(dev);
 284                 mutex_unlock(&dev->struct_mutex);
 285
 286                 drm_irq_install(dev);
 287
 288                 /* Resume the modeset for every activated CRTC */
 289                 drm_helper_resume_force_mode(dev);
 290         }
 291
 292         dev_priv->modeset_on_lid = 0;
 293
 294         return error;
 295 }
 296
 297 int i915_resume(struct drm_device *dev)
 298 {
 299         if (pci_enable_device(dev->pdev))
 300                 return -EIO;
 301
 302         pci_set_master(dev->pdev);
 303
 304         return i915_drm_thaw(dev);
 305 }
 306
 307 /**
 308  * i965_reset - reset chip after a hang
 309  * @dev: drm device to reset
 310  * @flags: reset domains
 311  *
 312  * Reset the chip.  Useful if a hang is detected. Returns zero on successful
 313  * reset or otherwise an error code.
 314  *
 315  * Procedure is fairly simple:
 316  *   - reset the chip using the reset reg
 317  *   - re-init context state
 318  *   - re-init hardware status page
 319  *   - re-init ring buffer
 320  *   - re-init interrupt state
 321  *   - re-init display
 322  */
 323 int i965_reset(struct drm_device *dev, u8 flags)
 324 {
 325         drm_i915_private_t *dev_priv = dev->dev_private;
 326         unsigned long timeout;
 327         u8 gdrst;
 328         /*
 329          * We really should only reset the display subsystem if we actually
 330          * need to
 331          */
 332         bool need_display = true;
 333
 334         mutex_lock(&dev->struct_mutex);
 335
 336         /*
 337          * Clear request list
 338          */
 339         i915_gem_retire_requests(dev);
 340
 341         if (need_display)
 342                 i915_save_display(dev);
 343
 344         if (IS_I965G(dev) || IS_G4X(dev)) {
 345                 /*
 346                  * Set the domains we want to reset, then the reset bit (bit 0).
 347                  * Clear the reset bit after a while and wait for hardware status
 348                  * bit (bit 1) to be set
 349                  */
 350                 pci_read_config_byte(dev->pdev, GDRST, &gdrst);
 351                 pci_write_config_byte(dev->pdev, GDRST, gdrst | flags | ((flags == GDRST_FULL) ? 0x1 : 0x0));
 352                 udelay(50);
 353                 pci_write_config_byte(dev->pdev, GDRST, gdrst & 0xfe);
 354
 355                 /* ...we don't want to loop forever though, 500ms should be plenty */
 356                timeout = jiffies + msecs_to_jiffies(500);
 357                 do {
 358                         udelay(100);
 359                         pci_read_config_byte(dev->pdev, GDRST, &gdrst);
 360                 } while ((gdrst & 0x1) && time_after(timeout, jiffies));
 361
 362                 if (gdrst & 0x1) {
 363                         WARN(true, "i915: Failed to reset chip\n");
 364                         mutex_unlock(&dev->struct_mutex);
 365                         return -EIO;
 366                 }
 367         } else {
 368                 DRM_ERROR("Error occurred. Don't know how to reset this chip.\n");
 369                 mutex_unlock(&dev->struct_mutex);
 370                 return -ENODEV;
 371         }
 372
 373         /* Ok, now get things going again... */
 374
 375         /*
 376          * Everything depends on having the GTT running, so we need to start
 377          * there.  Fortunately we don't need to do this unless we reset the
 378          * chip at a PCI level.
 379          *
 380          * Next we need to restore the context, but we don't use those
 381          * yet either...
 382          *
 383          * Ring buffer needs to be re-initialized in the KMS case, or if X
 384          * was running at the time of the reset (i.e. we weren't VT
 385          * switched away).
 386          */
 387         if (drm_core_check_feature(dev, DRIVER_MODESET) ||
 388                         !dev_priv->mm.suspended) {
 389                 struct intel_ring_buffer *ring = &dev_priv->render_ring;
 390                 dev_priv->mm.suspended = 0;
 391                 ring->init(dev, ring);
 392                 mutex_unlock(&dev->struct_mutex);
 393                 drm_irq_uninstall(dev);
 394                 drm_irq_install(dev);
 395                 mutex_lock(&dev->struct_mutex);
 396         }
 397
 398         /*
 399          * Display needs restore too...
 400          */
 401         if (need_display)
 402                 i915_restore_display(dev);
 403
 404         mutex_unlock(&dev->struct_mutex);
 405         return 0;
 406 }
 407
 408
 409 static int __devinit
 410 i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 411 {
 412         return drm_get_pci_dev(pdev, ent, &driver);
 413 }
 414
 415 static void
 416 i915_pci_remove(struct pci_dev *pdev)
 417 {
 418         struct drm_device *dev = pci_get_drvdata(pdev);
 419
 420         drm_put_dev(dev);
 421 }
 422
 423 static int i915_pm_suspend(struct device *dev)
 424 {
 425         struct pci_dev *pdev = to_pci_dev(dev);
 426         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 427         int error;
 428
 429         if (!drm_dev || !drm_dev->dev_private) {
 430                 dev_err(dev, "DRM not initialized, aborting suspend.\n");
 431                 return -ENODEV;
 432         }
 433
 434         error = i915_drm_freeze(drm_dev);
 435         if (error)
 436                 return error;
 437
 438         pci_disable_device(pdev);
 439         pci_set_power_state(pdev, PCI_D3hot);
 440
 441         return 0;
 442 }
 443
 444 static int i915_pm_resume(struct device *dev)
 445 {
 446         struct pci_dev *pdev = to_pci_dev(dev);
 447         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 448
 449         return i915_resume(drm_dev);
 450 }
 451
 452 static int i915_pm_freeze(struct device *dev)
 453 {
 454         struct pci_dev *pdev = to_pci_dev(dev);
 455         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 456
 457         if (!drm_dev || !drm_dev->dev_private) {
 458                 dev_err(dev, "DRM not initialized, aborting suspend.\n");
 459                 return -ENODEV;
 460         }
 461
 462         return i915_drm_freeze(drm_dev);
 463 }
 464
 465 static int i915_pm_thaw(struct device *dev)
 466 {
 467         struct pci_dev *pdev = to_pci_dev(dev);
 468         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 469
 470         return i915_drm_thaw(drm_dev);
 471 }
 472
 473 static int i915_pm_poweroff(struct device *dev)
 474 {
 475         struct pci_dev *pdev = to_pci_dev(dev);
 476         struct drm_device *drm_dev = pci_get_drvdata(pdev);
 477
 478         return i915_drm_freeze(drm_dev);
 479 }
 480
 481 static const struct dev_pm_ops i915_pm_ops = {
 482      .suspend = i915_pm_suspend,
 483      .resume = i915_pm_resume,
 484      .freeze = i915_pm_freeze,
 485      .thaw = i915_pm_thaw,
 486      .poweroff = i915_pm_poweroff,
 487      .restore = i915_pm_resume,
 488 };
 489
 490 static struct vm_operations_struct i915_gem_vm_ops = {
 491         .fault = i915_gem_fault,
 492         .open = drm_gem_vm_open,
 493         .close = drm_gem_vm_close,
 494 };
 495
 496 static struct drm_driver driver = {
 497         /* don't use mtrr's here, the Xserver or user space app should
 498          * deal with them for intel hardware.
 499          */
 500         .driver_features =
 501             DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/
 502             DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM,
 503         .load = i915_driver_load,
 504         .unload = i915_driver_unload,
 505         .open = i915_driver_open,
 506         .lastclose = i915_driver_lastclose,
 507         .preclose = i915_driver_preclose,
 508         .postclose = i915_driver_postclose,
 509
 510         /* Used in place of i915_pm_ops for non-DRIVER_MODESET */
 511         .suspend = i915_suspend,
 512         .resume = i915_resume,
 513
 514         .device_is_agp = i915_driver_device_is_agp,
 515         .enable_vblank = i915_enable_vblank,
 516         .disable_vblank = i915_disable_vblank,
 517         .irq_preinstall = i915_driver_irq_preinstall,
 518         .irq_postinstall = i915_driver_irq_postinstall,
 519         .irq_uninstall = i915_driver_irq_uninstall,
 520         .irq_handler = i915_driver_irq_handler,
 521         .reclaim_buffers = drm_core_reclaim_buffers,
 522         .get_map_ofs = drm_core_get_map_ofs,
 523         .get_reg_ofs = drm_core_get_reg_ofs,
 524         .master_create = i915_master_create,
 525         .master_destroy = i915_master_destroy,
 526 #if defined(CONFIG_DEBUG_FS)
 527         .debugfs_init = i915_debugfs_init,
 528         .debugfs_cleanup = i915_debugfs_cleanup,
 529 #endif
 530         .gem_init_object = i915_gem_init_object,
 531         .gem_free_object = i915_gem_free_object,
 532         .gem_vm_ops = &i915_gem_vm_ops,
 533         .ioctls = i915_ioctls,
 534         .fops = {
 535                  .owner = THIS_MODULE,
 536                  .open = drm_open,
 537                  .release = drm_release,
 538                  .unlocked_ioctl = drm_ioctl,
 539                  .mmap = drm_gem_mmap,
 540                  .poll = drm_poll,
 541                  .fasync = drm_fasync,
 542                  .read = drm_read,
 543 #ifdef CONFIG_COMPAT
 544                  .compat_ioctl = i915_compat_ioctl,
 545 #endif
 546         },
 547
 548         .pci_driver = {
 549                  .name = DRIVER_NAME,
 550                  .id_table = pciidlist,
 551                  .probe = i915_pci_probe,
 552                  .remove = i915_pci_remove,
 553                  .driver.pm = &i915_pm_ops,
 554         },
 555
 556         .name = DRIVER_NAME,
 557         .desc = DRIVER_DESC,
 558         .date = DRIVER_DATE,
 559         .major = DRIVER_MAJOR,
 560         .minor = DRIVER_MINOR,
 561         .patchlevel = DRIVER_PATCHLEVEL,
 562 };
 563
 564 static int __init i915_init(void)
 565 {
 566         if (!intel_agp_enabled) {
 567                 DRM_ERROR("drm/i915 can't work without intel_agp module!\n");
 568                 return -ENODEV;
 569         }
 570
 571         driver.num_ioctls = i915_max_ioctl;
 572
 573         i915_gem_shrinker_init();
 574
 575         /*
 576          * If CONFIG_DRM_I915_KMS is set, default to KMS unless
 577          * explicitly disabled with the module pararmeter.
 578          *
 579          * Otherwise, just follow the parameter (defaulting to off).
 580          *
 581          * Allow optional vga_text_mode_force boot option to override
 582          * the default behavior.
 583          */
 584 #if defined(CONFIG_DRM_I915_KMS)
 585         if (i915_modeset != 0)
 586                 driver.driver_features |= DRIVER_MODESET;
 587 #endif
 588         if (i915_modeset == 1)
 589                 driver.driver_features |= DRIVER_MODESET;
 590
 591 #ifdef CONFIG_VGA_CONSOLE
 592         if (vgacon_text_force() && i915_modeset == -1)
 593                 driver.driver_features &= ~DRIVER_MODESET;
 594 #endif
 595
 596         if (!(driver.driver_features & DRIVER_MODESET)) {
 597                 driver.suspend = i915_suspend;
 598                 driver.resume = i915_resume;
 599         }
 600
 601         return drm_init(&driver);
 602 }
 603
 604 static void __exit i915_exit(void)
 605 {
 606         i915_gem_shrinker_exit();
 607         drm_exit(&driver);
 608 }
 609
 610 module_init(i915_init);
 611 module_exit(i915_exit);
 612
 613 MODULE_AUTHOR(DRIVER_AUTHOR);
 614 MODULE_DESCRIPTION(DRIVER_DESC);
 615 MODULE_LICENSE("GPL and additional rights");