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) {                  \
  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 = 0 }
  58
  59 static struct pci_device_id pciidlist[] = {
  60         INTEL_VGA_DEVICE(0x3577),
  61         INTEL_VGA_DEVICE(0x2562),
  62         INTEL_VGA_DEVICE(0x3582),
  63         INTEL_VGA_DEVICE(0x2572),
  64         INTEL_VGA_DEVICE(0x2582),
  65         INTEL_VGA_DEVICE(0x258a),
  66         INTEL_VGA_DEVICE(0x2592),
  67         INTEL_VGA_DEVICE(0x2772),
  68         INTEL_VGA_DEVICE(0x27a2),
  69         INTEL_VGA_DEVICE(0x27ae),
  70         INTEL_VGA_DEVICE(0x2972),
  71         INTEL_VGA_DEVICE(0x2982),
  72         INTEL_VGA_DEVICE(0x2992),
  73         INTEL_VGA_DEVICE(0x29a2),
  74         INTEL_VGA_DEVICE(0x29b2),
  75         INTEL_VGA_DEVICE(0x29c2),
  76         INTEL_VGA_DEVICE(0x29d2),
  77         INTEL_VGA_DEVICE(0x2a02),
  78         INTEL_VGA_DEVICE(0x2a12),
  79         INTEL_VGA_DEVICE(0x2a42),
  80         INTEL_VGA_DEVICE(0x2e02),
  81         INTEL_VGA_DEVICE(0x2e12),
  82         INTEL_VGA_DEVICE(0x2e22),
  83         INTEL_VGA_DEVICE(0x2e32),
  84         INTEL_VGA_DEVICE(0x2e42),
  85         INTEL_VGA_DEVICE(0xa001),
  86         INTEL_VGA_DEVICE(0xa011),
  87         INTEL_VGA_DEVICE(0x35e8),
  88         INTEL_VGA_DEVICE(0x0042),
  89         INTEL_VGA_DEVICE(0x0046),
  90         {0, 0, 0}
  91 };
  92
  93 #if defined(CONFIG_DRM_I915_KMS)
  94 MODULE_DEVICE_TABLE(pci, pciidlist);
  95 #endif
  96
  97 static int i915_suspend(struct drm_device *dev, pm_message_t state)
  98 {
  99         struct drm_i915_private *dev_priv = dev->dev_private;
 100
 101         if (!dev || !dev_priv) {
 102                 DRM_ERROR("dev: %p, dev_priv: %p\n", dev, dev_priv);
 103                 DRM_ERROR("DRM not initialized, aborting suspend.\n");
 104                 return -ENODEV;
 105         }
 106
 107         if (state.event == PM_EVENT_PRETHAW)
 108                 return 0;
 109
 110         pci_save_state(dev->pdev);
 111
 112         /* If KMS is active, we do the leavevt stuff here */
 113         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 114                 if (i915_gem_idle(dev))
 115                         dev_err(&dev->pdev->dev,
 116                                 "GEM idle failed, resume may fail\n");
 117                 drm_irq_uninstall(dev);
 118         }
 119
 120         i915_save_state(dev);
 121
 122         intel_opregion_free(dev, 1);
 123
 124         if (state.event == PM_EVENT_SUSPEND) {
 125                 /* Shut down the device */
 126                 pci_disable_device(dev->pdev);
 127                 pci_set_power_state(dev->pdev, PCI_D3hot);
 128         }
 129
 130         /* Modeset on resume, not lid events */
 131         dev_priv->modeset_on_lid = 0;
 132
 133         return 0;
 134 }
 135
 136 static int i915_resume(struct drm_device *dev)
 137 {
 138         struct drm_i915_private *dev_priv = dev->dev_private;
 139         int ret = 0;
 140
 141         if (pci_enable_device(dev->pdev))
 142                 return -1;
 143         pci_set_master(dev->pdev);
 144
 145         i915_restore_state(dev);
 146
 147         intel_opregion_init(dev, 1);
 148
 149         /* KMS EnterVT equivalent */
 150         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 151                 mutex_lock(&dev->struct_mutex);
 152                 dev_priv->mm.suspended = 0;
 153
 154                 ret = i915_gem_init_ringbuffer(dev);
 155                 if (ret != 0)
 156                         ret = -1;
 157                 mutex_unlock(&dev->struct_mutex);
 158
 159                 drm_irq_install(dev);
 160         }
 161         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
 162                 /* Resume the modeset for every activated CRTC */
 163                 drm_helper_resume_force_mode(dev);
 164         }
 165
 166         dev_priv->modeset_on_lid = 0;
 167
 168         return ret;
 169 }
 170
 171 /**
 172  * i965_reset - reset chip after a hang
 173  * @dev: drm device to reset
 174  * @flags: reset domains
 175  *
 176  * Reset the chip.  Useful if a hang is detected. Returns zero on successful
 177  * reset or otherwise an error code.
 178  *
 179  * Procedure is fairly simple:
 180  *   - reset the chip using the reset reg
 181  *   - re-init context state
 182  *   - re-init hardware status page
 183  *   - re-init ring buffer
 184  *   - re-init interrupt state
 185  *   - re-init display
 186  */
 187 int i965_reset(struct drm_device *dev, u8 flags)
 188 {
 189         drm_i915_private_t *dev_priv = dev->dev_private;
 190         unsigned long timeout;
 191         u8 gdrst;
 192         /*
 193          * We really should only reset the display subsystem if we actually
 194          * need to
 195          */
 196         bool need_display = true;
 197
 198         mutex_lock(&dev->struct_mutex);
 199
 200         /*
 201          * Clear request list
 202          */
 203         i915_gem_retire_requests(dev);
 204
 205         if (need_display)
 206                 i915_save_display(dev);
 207
 208         if (IS_I965G(dev) || IS_G4X(dev)) {
 209                 /*
 210                  * Set the domains we want to reset, then the reset bit (bit 0).
 211                  * Clear the reset bit after a while and wait for hardware status
 212                  * bit (bit 1) to be set
 213                  */
 214                 pci_read_config_byte(dev->pdev, GDRST, &gdrst);
 215                 pci_write_config_byte(dev->pdev, GDRST, gdrst | flags | ((flags == GDRST_FULL) ? 0x1 : 0x0));
 216                 udelay(50);
 217                 pci_write_config_byte(dev->pdev, GDRST, gdrst & 0xfe);
 218
 219                 /* ...we don't want to loop forever though, 500ms should be plenty */
 220                timeout = jiffies + msecs_to_jiffies(500);
 221                 do {
 222                         udelay(100);
 223                         pci_read_config_byte(dev->pdev, GDRST, &gdrst);
 224                 } while ((gdrst & 0x1) && time_after(timeout, jiffies));
 225
 226                 if (gdrst & 0x1) {
 227                         WARN(true, "i915: Failed to reset chip\n");
 228                         mutex_unlock(&dev->struct_mutex);
 229                         return -EIO;
 230                 }
 231         } else {
 232                 DRM_ERROR("Error occurred. Don't know how to reset this chip.\n");
 233                 return -ENODEV;
 234         }
 235
 236         /* Ok, now get things going again... */
 237
 238         /*
 239          * Everything depends on having the GTT running, so we need to start
 240          * there.  Fortunately we don't need to do this unless we reset the
 241          * chip at a PCI level.
 242          *
 243          * Next we need to restore the context, but we don't use those
 244          * yet either...
 245          *
 246          * Ring buffer needs to be re-initialized in the KMS case, or if X
 247          * was running at the time of the reset (i.e. we weren't VT
 248          * switched away).
 249          */
 250         if (drm_core_check_feature(dev, DRIVER_MODESET) ||
 251             !dev_priv->mm.suspended) {
 252                 drm_i915_ring_buffer_t *ring = &dev_priv->ring;
 253                 struct drm_gem_object *obj = ring->ring_obj;
 254                 struct drm_i915_gem_object *obj_priv = obj->driver_private;
 255                 dev_priv->mm.suspended = 0;
 256
 257                 /* Stop the ring if it's running. */
 258                 I915_WRITE(PRB0_CTL, 0);
 259                 I915_WRITE(PRB0_TAIL, 0);
 260                 I915_WRITE(PRB0_HEAD, 0);
 261
 262                 /* Initialize the ring. */
 263                 I915_WRITE(PRB0_START, obj_priv->gtt_offset);
 264                 I915_WRITE(PRB0_CTL,
 265                            ((obj->size - 4096) & RING_NR_PAGES) |
 266                            RING_NO_REPORT |
 267                            RING_VALID);
 268                 if (!drm_core_check_feature(dev, DRIVER_MODESET))
 269                         i915_kernel_lost_context(dev);
 270                 else {
 271                         ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 272                         ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 273                         ring->space = ring->head - (ring->tail + 8);
 274                         if (ring->space < 0)
 275                                 ring->space += ring->Size;
 276                 }
 277
 278                 mutex_unlock(&dev->struct_mutex);
 279                 drm_irq_uninstall(dev);
 280                 drm_irq_install(dev);
 281                 mutex_lock(&dev->struct_mutex);
 282         }
 283
 284         /*
 285          * Display needs restore too...
 286          */
 287         if (need_display)
 288                 i915_restore_display(dev);
 289
 290         mutex_unlock(&dev->struct_mutex);
 291         return 0;
 292 }
 293
 294
 295 static int __devinit
 296 i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 297 {
 298         return drm_get_dev(pdev, ent, &driver);
 299 }
 300
 301 static void
 302 i915_pci_remove(struct pci_dev *pdev)
 303 {
 304         struct drm_device *dev = pci_get_drvdata(pdev);
 305
 306         drm_put_dev(dev);
 307 }
 308
 309 static int
 310 i915_pci_suspend(struct pci_dev *pdev, pm_message_t state)
 311 {
 312         struct drm_device *dev = pci_get_drvdata(pdev);
 313
 314         return i915_suspend(dev, state);
 315 }
 316
 317 static int
 318 i915_pci_resume(struct pci_dev *pdev)
 319 {
 320         struct drm_device *dev = pci_get_drvdata(pdev);
 321
 322         return i915_resume(dev);
 323 }
 324
 325 static int
 326 i915_pm_suspend(struct device *dev)
 327 {
 328         return i915_pci_suspend(to_pci_dev(dev), PMSG_SUSPEND);
 329 }
 330
 331 static int
 332 i915_pm_resume(struct device *dev)
 333 {
 334         return i915_pci_resume(to_pci_dev(dev));
 335 }
 336
 337 static int
 338 i915_pm_freeze(struct device *dev)
 339 {
 340         return i915_pci_suspend(to_pci_dev(dev), PMSG_FREEZE);
 341 }
 342
 343 static int
 344 i915_pm_thaw(struct device *dev)
 345 {
 346         /* thaw during hibernate, do nothing! */
 347         return 0;
 348 }
 349
 350 static int
 351 i915_pm_poweroff(struct device *dev)
 352 {
 353         return i915_pci_suspend(to_pci_dev(dev), PMSG_HIBERNATE);
 354 }
 355
 356 static int
 357 i915_pm_restore(struct device *dev)
 358 {
 359         return i915_pci_resume(to_pci_dev(dev));
 360 }
 361
 362 const struct dev_pm_ops i915_pm_ops = {
 363      .suspend = i915_pm_suspend,
 364      .resume = i915_pm_resume,
 365      .freeze = i915_pm_freeze,
 366      .thaw = i915_pm_thaw,
 367      .poweroff = i915_pm_poweroff,
 368      .restore = i915_pm_restore,
 369 };
 370
 371 static struct vm_operations_struct i915_gem_vm_ops = {
 372         .fault = i915_gem_fault,
 373         .open = drm_gem_vm_open,
 374         .close = drm_gem_vm_close,
 375 };
 376
 377 static struct drm_driver driver = {
 378         /* don't use mtrr's here, the Xserver or user space app should
 379          * deal with them for intel hardware.
 380          */
 381         .driver_features =
 382             DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/
 383             DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM,
 384         .load = i915_driver_load,
 385         .unload = i915_driver_unload,
 386         .open = i915_driver_open,
 387         .lastclose = i915_driver_lastclose,
 388         .preclose = i915_driver_preclose,
 389         .postclose = i915_driver_postclose,
 390         .device_is_agp = i915_driver_device_is_agp,
 391         .enable_vblank = i915_enable_vblank,
 392         .disable_vblank = i915_disable_vblank,
 393         .irq_preinstall = i915_driver_irq_preinstall,
 394         .irq_postinstall = i915_driver_irq_postinstall,
 395         .irq_uninstall = i915_driver_irq_uninstall,
 396         .irq_handler = i915_driver_irq_handler,
 397         .reclaim_buffers = drm_core_reclaim_buffers,
 398         .get_map_ofs = drm_core_get_map_ofs,
 399         .get_reg_ofs = drm_core_get_reg_ofs,
 400         .master_create = i915_master_create,
 401         .master_destroy = i915_master_destroy,
 402 #if defined(CONFIG_DEBUG_FS)
 403         .debugfs_init = i915_debugfs_init,
 404         .debugfs_cleanup = i915_debugfs_cleanup,
 405 #endif
 406         .gem_init_object = i915_gem_init_object,
 407         .gem_free_object = i915_gem_free_object,
 408         .gem_vm_ops = &i915_gem_vm_ops,
 409         .ioctls = i915_ioctls,
 410         .fops = {
 411                  .owner = THIS_MODULE,
 412                  .open = drm_open,
 413                  .release = drm_release,
 414                  .ioctl = drm_ioctl,
 415                  .mmap = drm_gem_mmap,
 416                  .poll = drm_poll,
 417                  .fasync = drm_fasync,
 418                  .read = drm_read,
 419 #ifdef CONFIG_COMPAT
 420                  .compat_ioctl = i915_compat_ioctl,
 421 #endif
 422         },
 423
 424         .pci_driver = {
 425                  .name = DRIVER_NAME,
 426                  .id_table = pciidlist,
 427                  .probe = i915_pci_probe,
 428                  .remove = i915_pci_remove,
 429                  .driver.pm = &i915_pm_ops,
 430         },
 431
 432         .name = DRIVER_NAME,
 433         .desc = DRIVER_DESC,
 434         .date = DRIVER_DATE,
 435         .major = DRIVER_MAJOR,
 436         .minor = DRIVER_MINOR,
 437         .patchlevel = DRIVER_PATCHLEVEL,
 438 };
 439
 440 static int __init i915_init(void)
 441 {
 442         driver.num_ioctls = i915_max_ioctl;
 443
 444         i915_gem_shrinker_init();
 445
 446         /*
 447          * If CONFIG_DRM_I915_KMS is set, default to KMS unless
 448          * explicitly disabled with the module pararmeter.
 449          *
 450          * Otherwise, just follow the parameter (defaulting to off).
 451          *
 452          * Allow optional vga_text_mode_force boot option to override
 453          * the default behavior.
 454          */
 455 #if defined(CONFIG_DRM_I915_KMS)
 456         if (i915_modeset != 0)
 457                 driver.driver_features |= DRIVER_MODESET;
 458 #endif
 459         if (i915_modeset == 1)
 460                 driver.driver_features |= DRIVER_MODESET;
 461
 462 #ifdef CONFIG_VGA_CONSOLE
 463         if (vgacon_text_force() && i915_modeset == -1)
 464                 driver.driver_features &= ~DRIVER_MODESET;
 465 #endif
 466
 467         return drm_init(&driver);
 468 }
 469
 470 static void __exit i915_exit(void)
 471 {
 472         i915_gem_shrinker_exit();
 473         drm_exit(&driver);
 474 }
 475
 476 module_init(i915_init);
 477 module_exit(i915_exit);
 478
 479 MODULE_AUTHOR(DRIVER_AUTHOR);
 480 MODULE_DESCRIPTION(DRIVER_DESC);
 481 MODULE_LICENSE("GPL and additional rights");