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