Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes...
[linux-2.6.git] / 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_mobile = 1, .cursor_needs_physical = 1,
73 };
74
75 const static struct intel_device_info intel_i865g_info = {
76         .is_i8xx = 1,
77 };
78
79 const static struct intel_device_info intel_i915g_info = {
80         .is_i915g = 1, .is_i9xx = 1, .cursor_needs_physical = 1,
81 };
82 const static struct intel_device_info intel_i915gm_info = {
83         .is_i9xx = 1,  .is_mobile = 1, .has_fbc = 1,
84         .cursor_needs_physical = 1,
85 };
86 const static struct intel_device_info intel_i945g_info = {
87         .is_i9xx = 1, .has_hotplug = 1, .cursor_needs_physical = 1,
88 };
89 const static struct intel_device_info intel_i945gm_info = {
90         .is_i945gm = 1, .is_i9xx = 1, .is_mobile = 1, .has_fbc = 1,
91         .has_hotplug = 1, .cursor_needs_physical = 1,
92 };
93
94 const static struct intel_device_info intel_i965g_info = {
95         .is_i965g = 1, .is_i9xx = 1, .has_hotplug = 1,
96 };
97
98 const static struct intel_device_info intel_i965gm_info = {
99         .is_i965g = 1, .is_mobile = 1, .is_i965gm = 1, .is_i9xx = 1,
100         .is_mobile = 1, .has_fbc = 1, .has_rc6 = 1,
101         .has_hotplug = 1,
102 };
103
104 const static struct intel_device_info intel_g33_info = {
105         .is_g33 = 1, .is_i9xx = 1, .need_gfx_hws = 1,
106         .has_hotplug = 1,
107 };
108
109 const static struct intel_device_info intel_g45_info = {
110         .is_i965g = 1, .is_g4x = 1, .is_i9xx = 1, .need_gfx_hws = 1,
111         .has_pipe_cxsr = 1,
112         .has_hotplug = 1,
113 };
114
115 const static struct intel_device_info intel_gm45_info = {
116         .is_i965g = 1, .is_mobile = 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,
119         .has_hotplug = 1,
120 };
121
122 const static struct intel_device_info intel_pineview_info = {
123         .is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .is_i9xx = 1,
124         .need_gfx_hws = 1,
125         .has_hotplug = 1,
126 };
127
128 const static struct intel_device_info intel_ironlake_d_info = {
129         .is_ironlake = 1, .is_i965g = 1, .is_i9xx = 1, .need_gfx_hws = 1,
130         .has_pipe_cxsr = 1,
131         .has_hotplug = 1,
132 };
133
134 const static struct intel_device_info intel_ironlake_m_info = {
135         .is_ironlake = 1, .is_mobile = 1, .is_i965g = 1, .is_i9xx = 1,
136         .need_gfx_hws = 1, .has_rc6 = 1,
137         .has_hotplug = 1,
138 };
139
140 const static struct intel_device_info intel_sandybridge_d_info = {
141         .is_i965g = 1, .is_i9xx = 1, .need_gfx_hws = 1,
142         .has_hotplug = 1, .is_gen6 = 1,
143 };
144
145 const static struct intel_device_info intel_sandybridge_m_info = {
146         .is_i965g = 1, .is_mobile = 1, .is_i9xx = 1, .need_gfx_hws = 1,
147         .has_hotplug = 1, .is_gen6 = 1,
148 };
149
150 const static struct pci_device_id pciidlist[] = {
151         INTEL_VGA_DEVICE(0x3577, &intel_i830_info),
152         INTEL_VGA_DEVICE(0x2562, &intel_845g_info),
153         INTEL_VGA_DEVICE(0x3582, &intel_i85x_info),
154         INTEL_VGA_DEVICE(0x35e8, &intel_i85x_info),
155         INTEL_VGA_DEVICE(0x2572, &intel_i865g_info),
156         INTEL_VGA_DEVICE(0x2582, &intel_i915g_info),
157         INTEL_VGA_DEVICE(0x258a, &intel_i915g_info),
158         INTEL_VGA_DEVICE(0x2592, &intel_i915gm_info),
159         INTEL_VGA_DEVICE(0x2772, &intel_i945g_info),
160         INTEL_VGA_DEVICE(0x27a2, &intel_i945gm_info),
161         INTEL_VGA_DEVICE(0x27ae, &intel_i945gm_info),
162         INTEL_VGA_DEVICE(0x2972, &intel_i965g_info),
163         INTEL_VGA_DEVICE(0x2982, &intel_i965g_info),
164         INTEL_VGA_DEVICE(0x2992, &intel_i965g_info),
165         INTEL_VGA_DEVICE(0x29a2, &intel_i965g_info),
166         INTEL_VGA_DEVICE(0x29b2, &intel_g33_info),
167         INTEL_VGA_DEVICE(0x29c2, &intel_g33_info),
168         INTEL_VGA_DEVICE(0x29d2, &intel_g33_info),
169         INTEL_VGA_DEVICE(0x2a02, &intel_i965gm_info),
170         INTEL_VGA_DEVICE(0x2a12, &intel_i965gm_info),
171         INTEL_VGA_DEVICE(0x2a42, &intel_gm45_info),
172         INTEL_VGA_DEVICE(0x2e02, &intel_g45_info),
173         INTEL_VGA_DEVICE(0x2e12, &intel_g45_info),
174         INTEL_VGA_DEVICE(0x2e22, &intel_g45_info),
175         INTEL_VGA_DEVICE(0x2e32, &intel_g45_info),
176         INTEL_VGA_DEVICE(0x2e42, &intel_g45_info),
177         INTEL_VGA_DEVICE(0xa001, &intel_pineview_info),
178         INTEL_VGA_DEVICE(0xa011, &intel_pineview_info),
179         INTEL_VGA_DEVICE(0x0042, &intel_ironlake_d_info),
180         INTEL_VGA_DEVICE(0x0046, &intel_ironlake_m_info),
181         INTEL_VGA_DEVICE(0x0102, &intel_sandybridge_d_info),
182         INTEL_VGA_DEVICE(0x0106, &intel_sandybridge_m_info),
183         {0, 0, 0}
184 };
185
186 #if defined(CONFIG_DRM_I915_KMS)
187 MODULE_DEVICE_TABLE(pci, pciidlist);
188 #endif
189
190 static int i915_drm_freeze(struct drm_device *dev)
191 {
192         struct drm_i915_private *dev_priv = dev->dev_private;
193
194         pci_save_state(dev->pdev);
195
196         /* If KMS is active, we do the leavevt stuff here */
197         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
198                 int error = i915_gem_idle(dev);
199                 if (error) {
200                         dev_err(&dev->pdev->dev,
201                                 "GEM idle failed, resume might fail\n");
202                         return error;
203                 }
204                 drm_irq_uninstall(dev);
205         }
206
207         i915_save_state(dev);
208
209         intel_opregion_free(dev, 1);
210
211         /* Modeset on resume, not lid events */
212         dev_priv->modeset_on_lid = 0;
213
214         return 0;
215 }
216
217 int i915_suspend(struct drm_device *dev, pm_message_t state)
218 {
219         int error;
220
221         if (!dev || !dev->dev_private) {
222                 DRM_ERROR("dev: %p\n", dev);
223                 DRM_ERROR("DRM not initialized, aborting suspend.\n");
224                 return -ENODEV;
225         }
226
227         if (state.event == PM_EVENT_PRETHAW)
228                 return 0;
229
230         error = i915_drm_freeze(dev);
231         if (error)
232                 return error;
233
234         if (state.event == PM_EVENT_SUSPEND) {
235                 /* Shut down the device */
236                 pci_disable_device(dev->pdev);
237                 pci_set_power_state(dev->pdev, PCI_D3hot);
238         }
239
240         return 0;
241 }
242
243 static int i915_drm_thaw(struct drm_device *dev)
244 {
245         struct drm_i915_private *dev_priv = dev->dev_private;
246         int error = 0;
247
248         i915_restore_state(dev);
249
250         intel_opregion_init(dev, 1);
251
252         /* KMS EnterVT equivalent */
253         if (drm_core_check_feature(dev, DRIVER_MODESET)) {
254                 mutex_lock(&dev->struct_mutex);
255                 dev_priv->mm.suspended = 0;
256
257                 error = i915_gem_init_ringbuffer(dev);
258                 mutex_unlock(&dev->struct_mutex);
259
260                 drm_irq_install(dev);
261
262                 /* Resume the modeset for every activated CRTC */
263                 drm_helper_resume_force_mode(dev);
264         }
265
266         dev_priv->modeset_on_lid = 0;
267
268         return error;
269 }
270
271 int i915_resume(struct drm_device *dev)
272 {
273         if (pci_enable_device(dev->pdev))
274                 return -EIO;
275
276         pci_set_master(dev->pdev);
277
278         return i915_drm_thaw(dev);
279 }
280
281 /**
282  * i965_reset - reset chip after a hang
283  * @dev: drm device to reset
284  * @flags: reset domains
285  *
286  * Reset the chip.  Useful if a hang is detected. Returns zero on successful
287  * reset or otherwise an error code.
288  *
289  * Procedure is fairly simple:
290  *   - reset the chip using the reset reg
291  *   - re-init context state
292  *   - re-init hardware status page
293  *   - re-init ring buffer
294  *   - re-init interrupt state
295  *   - re-init display
296  */
297 int i965_reset(struct drm_device *dev, u8 flags)
298 {
299         drm_i915_private_t *dev_priv = dev->dev_private;
300         unsigned long timeout;
301         u8 gdrst;
302         /*
303          * We really should only reset the display subsystem if we actually
304          * need to
305          */
306         bool need_display = true;
307
308         mutex_lock(&dev->struct_mutex);
309
310         /*
311          * Clear request list
312          */
313         i915_gem_retire_requests(dev);
314
315         if (need_display)
316                 i915_save_display(dev);
317
318         if (IS_I965G(dev) || IS_G4X(dev)) {
319                 /*
320                  * Set the domains we want to reset, then the reset bit (bit 0).
321                  * Clear the reset bit after a while and wait for hardware status
322                  * bit (bit 1) to be set
323                  */
324                 pci_read_config_byte(dev->pdev, GDRST, &gdrst);
325                 pci_write_config_byte(dev->pdev, GDRST, gdrst | flags | ((flags == GDRST_FULL) ? 0x1 : 0x0));
326                 udelay(50);
327                 pci_write_config_byte(dev->pdev, GDRST, gdrst & 0xfe);
328
329                 /* ...we don't want to loop forever though, 500ms should be plenty */
330                timeout = jiffies + msecs_to_jiffies(500);
331                 do {
332                         udelay(100);
333                         pci_read_config_byte(dev->pdev, GDRST, &gdrst);
334                 } while ((gdrst & 0x1) && time_after(timeout, jiffies));
335
336                 if (gdrst & 0x1) {
337                         WARN(true, "i915: Failed to reset chip\n");
338                         mutex_unlock(&dev->struct_mutex);
339                         return -EIO;
340                 }
341         } else {
342                 DRM_ERROR("Error occurred. Don't know how to reset this chip.\n");
343                 return -ENODEV;
344         }
345
346         /* Ok, now get things going again... */
347
348         /*
349          * Everything depends on having the GTT running, so we need to start
350          * there.  Fortunately we don't need to do this unless we reset the
351          * chip at a PCI level.
352          *
353          * Next we need to restore the context, but we don't use those
354          * yet either...
355          *
356          * Ring buffer needs to be re-initialized in the KMS case, or if X
357          * was running at the time of the reset (i.e. we weren't VT
358          * switched away).
359          */
360         if (drm_core_check_feature(dev, DRIVER_MODESET) ||
361             !dev_priv->mm.suspended) {
362                 drm_i915_ring_buffer_t *ring = &dev_priv->ring;
363                 struct drm_gem_object *obj = ring->ring_obj;
364                 struct drm_i915_gem_object *obj_priv = obj->driver_private;
365                 dev_priv->mm.suspended = 0;
366
367                 /* Stop the ring if it's running. */
368                 I915_WRITE(PRB0_CTL, 0);
369                 I915_WRITE(PRB0_TAIL, 0);
370                 I915_WRITE(PRB0_HEAD, 0);
371
372                 /* Initialize the ring. */
373                 I915_WRITE(PRB0_START, obj_priv->gtt_offset);
374                 I915_WRITE(PRB0_CTL,
375                            ((obj->size - 4096) & RING_NR_PAGES) |
376                            RING_NO_REPORT |
377                            RING_VALID);
378                 if (!drm_core_check_feature(dev, DRIVER_MODESET))
379                         i915_kernel_lost_context(dev);
380                 else {
381                         ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
382                         ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
383                         ring->space = ring->head - (ring->tail + 8);
384                         if (ring->space < 0)
385                                 ring->space += ring->Size;
386                 }
387
388                 mutex_unlock(&dev->struct_mutex);
389                 drm_irq_uninstall(dev);
390                 drm_irq_install(dev);
391                 mutex_lock(&dev->struct_mutex);
392         }
393
394         /*
395          * Display needs restore too...
396          */
397         if (need_display)
398                 i915_restore_display(dev);
399
400         mutex_unlock(&dev->struct_mutex);
401         return 0;
402 }
403
404
405 static int __devinit
406 i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
407 {
408         return drm_get_dev(pdev, ent, &driver);
409 }
410
411 static void
412 i915_pci_remove(struct pci_dev *pdev)
413 {
414         struct drm_device *dev = pci_get_drvdata(pdev);
415
416         drm_put_dev(dev);
417 }
418
419 static int i915_pm_suspend(struct device *dev)
420 {
421         struct pci_dev *pdev = to_pci_dev(dev);
422         struct drm_device *drm_dev = pci_get_drvdata(pdev);
423         int error;
424
425         if (!drm_dev || !drm_dev->dev_private) {
426                 dev_err(dev, "DRM not initialized, aborting suspend.\n");
427                 return -ENODEV;
428         }
429
430         error = i915_drm_freeze(drm_dev);
431         if (error)
432                 return error;
433
434         pci_disable_device(pdev);
435         pci_set_power_state(pdev, PCI_D3hot);
436
437         return 0;
438 }
439
440 static int i915_pm_resume(struct device *dev)
441 {
442         struct pci_dev *pdev = to_pci_dev(dev);
443         struct drm_device *drm_dev = pci_get_drvdata(pdev);
444
445         return i915_resume(drm_dev);
446 }
447
448 static int i915_pm_freeze(struct device *dev)
449 {
450         struct pci_dev *pdev = to_pci_dev(dev);
451         struct drm_device *drm_dev = pci_get_drvdata(pdev);
452
453         if (!drm_dev || !drm_dev->dev_private) {
454                 dev_err(dev, "DRM not initialized, aborting suspend.\n");
455                 return -ENODEV;
456         }
457
458         return i915_drm_freeze(drm_dev);
459 }
460
461 static int i915_pm_thaw(struct device *dev)
462 {
463         struct pci_dev *pdev = to_pci_dev(dev);
464         struct drm_device *drm_dev = pci_get_drvdata(pdev);
465
466         return i915_drm_thaw(drm_dev);
467 }
468
469 static int i915_pm_poweroff(struct device *dev)
470 {
471         struct pci_dev *pdev = to_pci_dev(dev);
472         struct drm_device *drm_dev = pci_get_drvdata(pdev);
473
474         return i915_drm_freeze(drm_dev);
475 }
476
477 const struct dev_pm_ops i915_pm_ops = {
478      .suspend = i915_pm_suspend,
479      .resume = i915_pm_resume,
480      .freeze = i915_pm_freeze,
481      .thaw = i915_pm_thaw,
482      .poweroff = i915_pm_poweroff,
483      .restore = i915_pm_resume,
484 };
485
486 static struct vm_operations_struct i915_gem_vm_ops = {
487         .fault = i915_gem_fault,
488         .open = drm_gem_vm_open,
489         .close = drm_gem_vm_close,
490 };
491
492 static struct drm_driver driver = {
493         /* don't use mtrr's here, the Xserver or user space app should
494          * deal with them for intel hardware.
495          */
496         .driver_features =
497             DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/
498             DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM,
499         .load = i915_driver_load,
500         .unload = i915_driver_unload,
501         .open = i915_driver_open,
502         .lastclose = i915_driver_lastclose,
503         .preclose = i915_driver_preclose,
504         .postclose = i915_driver_postclose,
505
506         /* Used in place of i915_pm_ops for non-DRIVER_MODESET */
507         .suspend = i915_suspend,
508         .resume = i915_resume,
509
510         .device_is_agp = i915_driver_device_is_agp,
511         .enable_vblank = i915_enable_vblank,
512         .disable_vblank = i915_disable_vblank,
513         .irq_preinstall = i915_driver_irq_preinstall,
514         .irq_postinstall = i915_driver_irq_postinstall,
515         .irq_uninstall = i915_driver_irq_uninstall,
516         .irq_handler = i915_driver_irq_handler,
517         .reclaim_buffers = drm_core_reclaim_buffers,
518         .get_map_ofs = drm_core_get_map_ofs,
519         .get_reg_ofs = drm_core_get_reg_ofs,
520         .master_create = i915_master_create,
521         .master_destroy = i915_master_destroy,
522 #if defined(CONFIG_DEBUG_FS)
523         .debugfs_init = i915_debugfs_init,
524         .debugfs_cleanup = i915_debugfs_cleanup,
525 #endif
526         .gem_init_object = i915_gem_init_object,
527         .gem_free_object = i915_gem_free_object,
528         .gem_vm_ops = &i915_gem_vm_ops,
529         .ioctls = i915_ioctls,
530         .fops = {
531                  .owner = THIS_MODULE,
532                  .open = drm_open,
533                  .release = drm_release,
534                  .unlocked_ioctl = drm_ioctl,
535                  .mmap = drm_gem_mmap,
536                  .poll = drm_poll,
537                  .fasync = drm_fasync,
538                  .read = drm_read,
539 #ifdef CONFIG_COMPAT
540                  .compat_ioctl = i915_compat_ioctl,
541 #endif
542         },
543
544         .pci_driver = {
545                  .name = DRIVER_NAME,
546                  .id_table = pciidlist,
547                  .probe = i915_pci_probe,
548                  .remove = i915_pci_remove,
549                  .driver.pm = &i915_pm_ops,
550         },
551
552         .name = DRIVER_NAME,
553         .desc = DRIVER_DESC,
554         .date = DRIVER_DATE,
555         .major = DRIVER_MAJOR,
556         .minor = DRIVER_MINOR,
557         .patchlevel = DRIVER_PATCHLEVEL,
558 };
559
560 static int __init i915_init(void)
561 {
562         if (!intel_agp_enabled) {
563                 DRM_ERROR("drm/i915 can't work without intel_agp module!\n");
564                 return -ENODEV;
565         }
566
567         driver.num_ioctls = i915_max_ioctl;
568
569         i915_gem_shrinker_init();
570
571         /*
572          * If CONFIG_DRM_I915_KMS is set, default to KMS unless
573          * explicitly disabled with the module pararmeter.
574          *
575          * Otherwise, just follow the parameter (defaulting to off).
576          *
577          * Allow optional vga_text_mode_force boot option to override
578          * the default behavior.
579          */
580 #if defined(CONFIG_DRM_I915_KMS)
581         if (i915_modeset != 0)
582                 driver.driver_features |= DRIVER_MODESET;
583 #endif
584         if (i915_modeset == 1)
585                 driver.driver_features |= DRIVER_MODESET;
586
587 #ifdef CONFIG_VGA_CONSOLE
588         if (vgacon_text_force() && i915_modeset == -1)
589                 driver.driver_features &= ~DRIVER_MODESET;
590 #endif
591
592         if (!(driver.driver_features & DRIVER_MODESET)) {
593                 driver.suspend = i915_suspend;
594                 driver.resume = i915_resume;
595         }
596
597         return drm_init(&driver);
598 }
599
600 static void __exit i915_exit(void)
601 {
602         i915_gem_shrinker_exit();
603         drm_exit(&driver);
604 }
605
606 module_init(i915_init);
607 module_exit(i915_exit);
608
609 MODULE_AUTHOR(DRIVER_AUTHOR);
610 MODULE_DESCRIPTION(DRIVER_DESC);
611 MODULE_LICENSE("GPL and additional rights");