1 /* i915_drv.c -- i830,i845,i855,i865,i915 driver -*- linux-c -*-
5 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
16 * The above copyright notice and this permission notice (including the
17 * next paragraph) shall be included in all copies or substantial portions
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.
30 #include <linux/device.h>
36 #include <linux/console.h>
37 #include "drm_crtc_helper.h"
39 static int i915_modeset = -1;
40 module_param_named(modeset, i915_modeset, int, 0400);
42 unsigned int i915_fbpercrtc = 0;
43 module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400);
45 unsigned int i915_powersave = 1;
46 module_param_named(powersave, i915_powersave, int, 0400);
48 unsigned int i915_lvds_downclock = 0;
49 module_param_named(lvds_downclock, i915_lvds_downclock, int, 0400);
51 static struct drm_driver driver;
52 extern int intel_agp_enabled;
54 #define INTEL_VGA_DEVICE(id, info) { \
55 .class = PCI_CLASS_DISPLAY_VGA << 8, \
56 .class_mask = 0xffff00, \
59 .subvendor = PCI_ANY_ID, \
60 .subdevice = PCI_ANY_ID, \
61 .driver_data = (unsigned long) info }
63 const static struct intel_device_info intel_i830_info = {
64 .is_i8xx = 1, .is_mobile = 1, .cursor_needs_physical = 1,
67 const static struct intel_device_info intel_845g_info = {
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,
76 const static struct intel_device_info intel_i865g_info = {
80 const static struct intel_device_info intel_i915g_info = {
81 .is_i915g = 1, .is_i9xx = 1, .cursor_needs_physical = 1,
83 const static struct intel_device_info intel_i915gm_info = {
84 .is_i9xx = 1, .is_mobile = 1,
85 .cursor_needs_physical = 1,
87 const static struct intel_device_info intel_i945g_info = {
88 .is_i9xx = 1, .has_hotplug = 1, .cursor_needs_physical = 1,
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,
95 const static struct intel_device_info intel_i965g_info = {
96 .is_i965g = 1, .is_i9xx = 1, .has_hotplug = 1,
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,
105 const static struct intel_device_info intel_g33_info = {
106 .is_g33 = 1, .is_i9xx = 1, .need_gfx_hws = 1,
110 const static struct intel_device_info intel_g45_info = {
111 .is_i965g = 1, .is_g4x = 1, .is_i9xx = 1, .need_gfx_hws = 1,
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,
123 const static struct intel_device_info intel_pineview_info = {
124 .is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .is_i9xx = 1,
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,
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,
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,
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,
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),
187 #if defined(CONFIG_DRM_I915_KMS)
188 MODULE_DEVICE_TABLE(pci, pciidlist);
191 static int i915_drm_freeze(struct drm_device *dev)
193 struct drm_i915_private *dev_priv = dev->dev_private;
195 pci_save_state(dev->pdev);
197 /* If KMS is active, we do the leavevt stuff here */
198 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
199 int error = i915_gem_idle(dev);
201 dev_err(&dev->pdev->dev,
202 "GEM idle failed, resume might fail\n");
205 drm_irq_uninstall(dev);
208 i915_save_state(dev);
210 intel_opregion_free(dev, 1);
212 /* Modeset on resume, not lid events */
213 dev_priv->modeset_on_lid = 0;
218 int i915_suspend(struct drm_device *dev, pm_message_t state)
222 if (!dev || !dev->dev_private) {
223 DRM_ERROR("dev: %p\n", dev);
224 DRM_ERROR("DRM not initialized, aborting suspend.\n");
228 if (state.event == PM_EVENT_PRETHAW)
231 error = i915_drm_freeze(dev);
235 if (state.event == PM_EVENT_SUSPEND) {
236 /* Shut down the device */
237 pci_disable_device(dev->pdev);
238 pci_set_power_state(dev->pdev, PCI_D3hot);
244 static int i915_drm_thaw(struct drm_device *dev)
246 struct drm_i915_private *dev_priv = dev->dev_private;
249 i915_restore_state(dev);
251 intel_opregion_init(dev, 1);
253 /* KMS EnterVT equivalent */
254 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
255 mutex_lock(&dev->struct_mutex);
256 dev_priv->mm.suspended = 0;
258 error = i915_gem_init_ringbuffer(dev);
259 mutex_unlock(&dev->struct_mutex);
261 drm_irq_install(dev);
263 /* Resume the modeset for every activated CRTC */
264 drm_helper_resume_force_mode(dev);
267 dev_priv->modeset_on_lid = 0;
272 int i915_resume(struct drm_device *dev)
274 if (pci_enable_device(dev->pdev))
277 pci_set_master(dev->pdev);
279 return i915_drm_thaw(dev);
283 * i965_reset - reset chip after a hang
284 * @dev: drm device to reset
285 * @flags: reset domains
287 * Reset the chip. Useful if a hang is detected. Returns zero on successful
288 * reset or otherwise an error code.
290 * Procedure is fairly simple:
291 * - reset the chip using the reset reg
292 * - re-init context state
293 * - re-init hardware status page
294 * - re-init ring buffer
295 * - re-init interrupt state
298 int i965_reset(struct drm_device *dev, u8 flags)
300 drm_i915_private_t *dev_priv = dev->dev_private;
301 unsigned long timeout;
304 * We really should only reset the display subsystem if we actually
307 bool need_display = true;
309 mutex_lock(&dev->struct_mutex);
314 i915_gem_retire_requests(dev);
317 i915_save_display(dev);
319 if (IS_I965G(dev) || IS_G4X(dev)) {
321 * Set the domains we want to reset, then the reset bit (bit 0).
322 * Clear the reset bit after a while and wait for hardware status
323 * bit (bit 1) to be set
325 pci_read_config_byte(dev->pdev, GDRST, &gdrst);
326 pci_write_config_byte(dev->pdev, GDRST, gdrst | flags | ((flags == GDRST_FULL) ? 0x1 : 0x0));
328 pci_write_config_byte(dev->pdev, GDRST, gdrst & 0xfe);
330 /* ...we don't want to loop forever though, 500ms should be plenty */
331 timeout = jiffies + msecs_to_jiffies(500);
334 pci_read_config_byte(dev->pdev, GDRST, &gdrst);
335 } while ((gdrst & 0x1) && time_after(timeout, jiffies));
338 WARN(true, "i915: Failed to reset chip\n");
339 mutex_unlock(&dev->struct_mutex);
343 DRM_ERROR("Error occurred. Don't know how to reset this chip.\n");
347 /* Ok, now get things going again... */
350 * Everything depends on having the GTT running, so we need to start
351 * there. Fortunately we don't need to do this unless we reset the
352 * chip at a PCI level.
354 * Next we need to restore the context, but we don't use those
357 * Ring buffer needs to be re-initialized in the KMS case, or if X
358 * was running at the time of the reset (i.e. we weren't VT
361 if (drm_core_check_feature(dev, DRIVER_MODESET) ||
362 !dev_priv->mm.suspended) {
363 drm_i915_ring_buffer_t *ring = &dev_priv->ring;
364 struct drm_gem_object *obj = ring->ring_obj;
365 struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
366 dev_priv->mm.suspended = 0;
368 /* Stop the ring if it's running. */
369 I915_WRITE(PRB0_CTL, 0);
370 I915_WRITE(PRB0_TAIL, 0);
371 I915_WRITE(PRB0_HEAD, 0);
373 /* Initialize the ring. */
374 I915_WRITE(PRB0_START, obj_priv->gtt_offset);
376 ((obj->size - 4096) & RING_NR_PAGES) |
379 if (!drm_core_check_feature(dev, DRIVER_MODESET))
380 i915_kernel_lost_context(dev);
382 ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
383 ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
384 ring->space = ring->head - (ring->tail + 8);
386 ring->space += ring->Size;
389 mutex_unlock(&dev->struct_mutex);
390 drm_irq_uninstall(dev);
391 drm_irq_install(dev);
392 mutex_lock(&dev->struct_mutex);
396 * Display needs restore too...
399 i915_restore_display(dev);
401 mutex_unlock(&dev->struct_mutex);
407 i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
409 return drm_get_dev(pdev, ent, &driver);
413 i915_pci_remove(struct pci_dev *pdev)
415 struct drm_device *dev = pci_get_drvdata(pdev);
420 static int i915_pm_suspend(struct device *dev)
422 struct pci_dev *pdev = to_pci_dev(dev);
423 struct drm_device *drm_dev = pci_get_drvdata(pdev);
426 if (!drm_dev || !drm_dev->dev_private) {
427 dev_err(dev, "DRM not initialized, aborting suspend.\n");
431 error = i915_drm_freeze(drm_dev);
435 pci_disable_device(pdev);
436 pci_set_power_state(pdev, PCI_D3hot);
441 static int i915_pm_resume(struct device *dev)
443 struct pci_dev *pdev = to_pci_dev(dev);
444 struct drm_device *drm_dev = pci_get_drvdata(pdev);
446 return i915_resume(drm_dev);
449 static int i915_pm_freeze(struct device *dev)
451 struct pci_dev *pdev = to_pci_dev(dev);
452 struct drm_device *drm_dev = pci_get_drvdata(pdev);
454 if (!drm_dev || !drm_dev->dev_private) {
455 dev_err(dev, "DRM not initialized, aborting suspend.\n");
459 return i915_drm_freeze(drm_dev);
462 static int i915_pm_thaw(struct device *dev)
464 struct pci_dev *pdev = to_pci_dev(dev);
465 struct drm_device *drm_dev = pci_get_drvdata(pdev);
467 return i915_drm_thaw(drm_dev);
470 static int i915_pm_poweroff(struct device *dev)
472 struct pci_dev *pdev = to_pci_dev(dev);
473 struct drm_device *drm_dev = pci_get_drvdata(pdev);
475 return i915_drm_freeze(drm_dev);
478 const struct dev_pm_ops i915_pm_ops = {
479 .suspend = i915_pm_suspend,
480 .resume = i915_pm_resume,
481 .freeze = i915_pm_freeze,
482 .thaw = i915_pm_thaw,
483 .poweroff = i915_pm_poweroff,
484 .restore = i915_pm_resume,
487 static struct vm_operations_struct i915_gem_vm_ops = {
488 .fault = i915_gem_fault,
489 .open = drm_gem_vm_open,
490 .close = drm_gem_vm_close,
493 static struct drm_driver driver = {
494 /* don't use mtrr's here, the Xserver or user space app should
495 * deal with them for intel hardware.
498 DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | /* DRIVER_USE_MTRR |*/
499 DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM,
500 .load = i915_driver_load,
501 .unload = i915_driver_unload,
502 .open = i915_driver_open,
503 .lastclose = i915_driver_lastclose,
504 .preclose = i915_driver_preclose,
505 .postclose = i915_driver_postclose,
507 /* Used in place of i915_pm_ops for non-DRIVER_MODESET */
508 .suspend = i915_suspend,
509 .resume = i915_resume,
511 .device_is_agp = i915_driver_device_is_agp,
512 .enable_vblank = i915_enable_vblank,
513 .disable_vblank = i915_disable_vblank,
514 .irq_preinstall = i915_driver_irq_preinstall,
515 .irq_postinstall = i915_driver_irq_postinstall,
516 .irq_uninstall = i915_driver_irq_uninstall,
517 .irq_handler = i915_driver_irq_handler,
518 .reclaim_buffers = drm_core_reclaim_buffers,
519 .get_map_ofs = drm_core_get_map_ofs,
520 .get_reg_ofs = drm_core_get_reg_ofs,
521 .master_create = i915_master_create,
522 .master_destroy = i915_master_destroy,
523 #if defined(CONFIG_DEBUG_FS)
524 .debugfs_init = i915_debugfs_init,
525 .debugfs_cleanup = i915_debugfs_cleanup,
527 .gem_init_object = i915_gem_init_object,
528 .gem_free_object = i915_gem_free_object,
529 .gem_vm_ops = &i915_gem_vm_ops,
530 .ioctls = i915_ioctls,
532 .owner = THIS_MODULE,
534 .release = drm_release,
535 .unlocked_ioctl = drm_ioctl,
536 .mmap = drm_gem_mmap,
538 .fasync = drm_fasync,
541 .compat_ioctl = i915_compat_ioctl,
547 .id_table = pciidlist,
548 .probe = i915_pci_probe,
549 .remove = i915_pci_remove,
550 .driver.pm = &i915_pm_ops,
556 .major = DRIVER_MAJOR,
557 .minor = DRIVER_MINOR,
558 .patchlevel = DRIVER_PATCHLEVEL,
561 static int __init i915_init(void)
563 if (!intel_agp_enabled) {
564 DRM_ERROR("drm/i915 can't work without intel_agp module!\n");
568 driver.num_ioctls = i915_max_ioctl;
570 i915_gem_shrinker_init();
573 * If CONFIG_DRM_I915_KMS is set, default to KMS unless
574 * explicitly disabled with the module pararmeter.
576 * Otherwise, just follow the parameter (defaulting to off).
578 * Allow optional vga_text_mode_force boot option to override
579 * the default behavior.
581 #if defined(CONFIG_DRM_I915_KMS)
582 if (i915_modeset != 0)
583 driver.driver_features |= DRIVER_MODESET;
585 if (i915_modeset == 1)
586 driver.driver_features |= DRIVER_MODESET;
588 #ifdef CONFIG_VGA_CONSOLE
589 if (vgacon_text_force() && i915_modeset == -1)
590 driver.driver_features &= ~DRIVER_MODESET;
593 if (!(driver.driver_features & DRIVER_MODESET)) {
594 driver.suspend = i915_suspend;
595 driver.resume = i915_resume;
598 return drm_init(&driver);
601 static void __exit i915_exit(void)
603 i915_gem_shrinker_exit();
607 module_init(i915_init);
608 module_exit(i915_exit);
610 MODULE_AUTHOR(DRIVER_AUTHOR);
611 MODULE_DESCRIPTION(DRIVER_DESC);
612 MODULE_LICENSE("GPL and additional rights");