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>
31 #include <linux/acpi.h>
33 #include <drm/i915_drm.h>
35 #include "i915_trace.h"
36 #include "intel_drv.h"
38 #include <linux/console.h>
39 #include <linux/module.h>
40 #include <linux/pm_runtime.h>
41 #include <drm/drm_crtc_helper.h>
43 static struct drm_driver driver;
45 #define GEN_DEFAULT_PIPEOFFSETS \
46 .pipe_offsets = { PIPE_A_OFFSET, PIPE_B_OFFSET, \
47 PIPE_C_OFFSET, PIPE_EDP_OFFSET }, \
48 .trans_offsets = { TRANSCODER_A_OFFSET, TRANSCODER_B_OFFSET, \
49 TRANSCODER_C_OFFSET, TRANSCODER_EDP_OFFSET }, \
50 .palette_offsets = { PALETTE_A_OFFSET, PALETTE_B_OFFSET }
52 #define GEN_CHV_PIPEOFFSETS \
53 .pipe_offsets = { PIPE_A_OFFSET, PIPE_B_OFFSET, \
54 CHV_PIPE_C_OFFSET }, \
55 .trans_offsets = { TRANSCODER_A_OFFSET, TRANSCODER_B_OFFSET, \
56 CHV_TRANSCODER_C_OFFSET, }, \
57 .palette_offsets = { PALETTE_A_OFFSET, PALETTE_B_OFFSET, \
58 CHV_PALETTE_C_OFFSET }
60 #define CURSOR_OFFSETS \
61 .cursor_offsets = { CURSOR_A_OFFSET, CURSOR_B_OFFSET, CHV_CURSOR_C_OFFSET }
63 #define IVB_CURSOR_OFFSETS \
64 .cursor_offsets = { CURSOR_A_OFFSET, IVB_CURSOR_B_OFFSET, IVB_CURSOR_C_OFFSET }
66 static const struct intel_device_info intel_i830_info = {
67 .gen = 2, .is_mobile = 1, .cursor_needs_physical = 1, .num_pipes = 2,
68 .has_overlay = 1, .overlay_needs_physical = 1,
69 .ring_mask = RENDER_RING,
70 GEN_DEFAULT_PIPEOFFSETS,
74 static const struct intel_device_info intel_845g_info = {
75 .gen = 2, .num_pipes = 1,
76 .has_overlay = 1, .overlay_needs_physical = 1,
77 .ring_mask = RENDER_RING,
78 GEN_DEFAULT_PIPEOFFSETS,
82 static const struct intel_device_info intel_i85x_info = {
83 .gen = 2, .is_i85x = 1, .is_mobile = 1, .num_pipes = 2,
84 .cursor_needs_physical = 1,
85 .has_overlay = 1, .overlay_needs_physical = 1,
87 .ring_mask = RENDER_RING,
88 GEN_DEFAULT_PIPEOFFSETS,
92 static const struct intel_device_info intel_i865g_info = {
93 .gen = 2, .num_pipes = 1,
94 .has_overlay = 1, .overlay_needs_physical = 1,
95 .ring_mask = RENDER_RING,
96 GEN_DEFAULT_PIPEOFFSETS,
100 static const struct intel_device_info intel_i915g_info = {
101 .gen = 3, .is_i915g = 1, .cursor_needs_physical = 1, .num_pipes = 2,
102 .has_overlay = 1, .overlay_needs_physical = 1,
103 .ring_mask = RENDER_RING,
104 GEN_DEFAULT_PIPEOFFSETS,
107 static const struct intel_device_info intel_i915gm_info = {
108 .gen = 3, .is_mobile = 1, .num_pipes = 2,
109 .cursor_needs_physical = 1,
110 .has_overlay = 1, .overlay_needs_physical = 1,
113 .ring_mask = RENDER_RING,
114 GEN_DEFAULT_PIPEOFFSETS,
117 static const struct intel_device_info intel_i945g_info = {
118 .gen = 3, .has_hotplug = 1, .cursor_needs_physical = 1, .num_pipes = 2,
119 .has_overlay = 1, .overlay_needs_physical = 1,
120 .ring_mask = RENDER_RING,
121 GEN_DEFAULT_PIPEOFFSETS,
124 static const struct intel_device_info intel_i945gm_info = {
125 .gen = 3, .is_i945gm = 1, .is_mobile = 1, .num_pipes = 2,
126 .has_hotplug = 1, .cursor_needs_physical = 1,
127 .has_overlay = 1, .overlay_needs_physical = 1,
130 .ring_mask = RENDER_RING,
131 GEN_DEFAULT_PIPEOFFSETS,
135 static const struct intel_device_info intel_i965g_info = {
136 .gen = 4, .is_broadwater = 1, .num_pipes = 2,
139 .ring_mask = RENDER_RING,
140 GEN_DEFAULT_PIPEOFFSETS,
144 static const struct intel_device_info intel_i965gm_info = {
145 .gen = 4, .is_crestline = 1, .num_pipes = 2,
146 .is_mobile = 1, .has_fbc = 1, .has_hotplug = 1,
149 .ring_mask = RENDER_RING,
150 GEN_DEFAULT_PIPEOFFSETS,
154 static const struct intel_device_info intel_g33_info = {
155 .gen = 3, .is_g33 = 1, .num_pipes = 2,
156 .need_gfx_hws = 1, .has_hotplug = 1,
158 .ring_mask = RENDER_RING,
159 GEN_DEFAULT_PIPEOFFSETS,
163 static const struct intel_device_info intel_g45_info = {
164 .gen = 4, .is_g4x = 1, .need_gfx_hws = 1, .num_pipes = 2,
165 .has_pipe_cxsr = 1, .has_hotplug = 1,
166 .ring_mask = RENDER_RING | BSD_RING,
167 GEN_DEFAULT_PIPEOFFSETS,
171 static const struct intel_device_info intel_gm45_info = {
172 .gen = 4, .is_g4x = 1, .num_pipes = 2,
173 .is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1,
174 .has_pipe_cxsr = 1, .has_hotplug = 1,
176 .ring_mask = RENDER_RING | BSD_RING,
177 GEN_DEFAULT_PIPEOFFSETS,
181 static const struct intel_device_info intel_pineview_info = {
182 .gen = 3, .is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .num_pipes = 2,
183 .need_gfx_hws = 1, .has_hotplug = 1,
185 GEN_DEFAULT_PIPEOFFSETS,
189 static const struct intel_device_info intel_ironlake_d_info = {
190 .gen = 5, .num_pipes = 2,
191 .need_gfx_hws = 1, .has_hotplug = 1,
192 .ring_mask = RENDER_RING | BSD_RING,
193 GEN_DEFAULT_PIPEOFFSETS,
197 static const struct intel_device_info intel_ironlake_m_info = {
198 .gen = 5, .is_mobile = 1, .num_pipes = 2,
199 .need_gfx_hws = 1, .has_hotplug = 1,
201 .ring_mask = RENDER_RING | BSD_RING,
202 GEN_DEFAULT_PIPEOFFSETS,
206 static const struct intel_device_info intel_sandybridge_d_info = {
207 .gen = 6, .num_pipes = 2,
208 .need_gfx_hws = 1, .has_hotplug = 1,
210 .ring_mask = RENDER_RING | BSD_RING | BLT_RING,
212 GEN_DEFAULT_PIPEOFFSETS,
216 static const struct intel_device_info intel_sandybridge_m_info = {
217 .gen = 6, .is_mobile = 1, .num_pipes = 2,
218 .need_gfx_hws = 1, .has_hotplug = 1,
220 .ring_mask = RENDER_RING | BSD_RING | BLT_RING,
222 GEN_DEFAULT_PIPEOFFSETS,
226 #define GEN7_FEATURES \
227 .gen = 7, .num_pipes = 3, \
228 .need_gfx_hws = 1, .has_hotplug = 1, \
230 .ring_mask = RENDER_RING | BSD_RING | BLT_RING, \
233 static const struct intel_device_info intel_ivybridge_d_info = {
236 GEN_DEFAULT_PIPEOFFSETS,
240 static const struct intel_device_info intel_ivybridge_m_info = {
244 GEN_DEFAULT_PIPEOFFSETS,
248 static const struct intel_device_info intel_ivybridge_q_info = {
251 .num_pipes = 0, /* legal, last one wins */
252 GEN_DEFAULT_PIPEOFFSETS,
256 static const struct intel_device_info intel_valleyview_m_info = {
261 .display_mmio_offset = VLV_DISPLAY_BASE,
262 .has_fbc = 0, /* legal, last one wins */
263 .has_llc = 0, /* legal, last one wins */
264 GEN_DEFAULT_PIPEOFFSETS,
268 static const struct intel_device_info intel_valleyview_d_info = {
272 .display_mmio_offset = VLV_DISPLAY_BASE,
273 .has_fbc = 0, /* legal, last one wins */
274 .has_llc = 0, /* legal, last one wins */
275 GEN_DEFAULT_PIPEOFFSETS,
279 static const struct intel_device_info intel_haswell_d_info = {
284 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
285 GEN_DEFAULT_PIPEOFFSETS,
289 static const struct intel_device_info intel_haswell_m_info = {
295 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
296 GEN_DEFAULT_PIPEOFFSETS,
300 static const struct intel_device_info intel_broadwell_d_info = {
301 .gen = 8, .num_pipes = 3,
302 .need_gfx_hws = 1, .has_hotplug = 1,
303 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
307 GEN_DEFAULT_PIPEOFFSETS,
311 static const struct intel_device_info intel_broadwell_m_info = {
312 .gen = 8, .is_mobile = 1, .num_pipes = 3,
313 .need_gfx_hws = 1, .has_hotplug = 1,
314 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
318 GEN_DEFAULT_PIPEOFFSETS,
322 static const struct intel_device_info intel_broadwell_gt3d_info = {
323 .gen = 8, .num_pipes = 3,
324 .need_gfx_hws = 1, .has_hotplug = 1,
325 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
329 GEN_DEFAULT_PIPEOFFSETS,
333 static const struct intel_device_info intel_broadwell_gt3m_info = {
334 .gen = 8, .is_mobile = 1, .num_pipes = 3,
335 .need_gfx_hws = 1, .has_hotplug = 1,
336 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING | BSD2_RING,
340 GEN_DEFAULT_PIPEOFFSETS,
344 static const struct intel_device_info intel_cherryview_info = {
346 .gen = 8, .num_pipes = 3,
347 .need_gfx_hws = 1, .has_hotplug = 1,
348 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
350 .display_mmio_offset = VLV_DISPLAY_BASE,
356 * Make sure any device matches here are from most specific to most
357 * general. For example, since the Quanta match is based on the subsystem
358 * and subvendor IDs, we need it to come before the more general IVB
359 * PCI ID matches, otherwise we'll use the wrong info struct above.
361 #define INTEL_PCI_IDS \
362 INTEL_I830_IDS(&intel_i830_info), \
363 INTEL_I845G_IDS(&intel_845g_info), \
364 INTEL_I85X_IDS(&intel_i85x_info), \
365 INTEL_I865G_IDS(&intel_i865g_info), \
366 INTEL_I915G_IDS(&intel_i915g_info), \
367 INTEL_I915GM_IDS(&intel_i915gm_info), \
368 INTEL_I945G_IDS(&intel_i945g_info), \
369 INTEL_I945GM_IDS(&intel_i945gm_info), \
370 INTEL_I965G_IDS(&intel_i965g_info), \
371 INTEL_G33_IDS(&intel_g33_info), \
372 INTEL_I965GM_IDS(&intel_i965gm_info), \
373 INTEL_GM45_IDS(&intel_gm45_info), \
374 INTEL_G45_IDS(&intel_g45_info), \
375 INTEL_PINEVIEW_IDS(&intel_pineview_info), \
376 INTEL_IRONLAKE_D_IDS(&intel_ironlake_d_info), \
377 INTEL_IRONLAKE_M_IDS(&intel_ironlake_m_info), \
378 INTEL_SNB_D_IDS(&intel_sandybridge_d_info), \
379 INTEL_SNB_M_IDS(&intel_sandybridge_m_info), \
380 INTEL_IVB_Q_IDS(&intel_ivybridge_q_info), /* must be first IVB */ \
381 INTEL_IVB_M_IDS(&intel_ivybridge_m_info), \
382 INTEL_IVB_D_IDS(&intel_ivybridge_d_info), \
383 INTEL_HSW_D_IDS(&intel_haswell_d_info), \
384 INTEL_HSW_M_IDS(&intel_haswell_m_info), \
385 INTEL_VLV_M_IDS(&intel_valleyview_m_info), \
386 INTEL_VLV_D_IDS(&intel_valleyview_d_info), \
387 INTEL_BDW_GT12M_IDS(&intel_broadwell_m_info), \
388 INTEL_BDW_GT12D_IDS(&intel_broadwell_d_info), \
389 INTEL_BDW_GT3M_IDS(&intel_broadwell_gt3m_info), \
390 INTEL_BDW_GT3D_IDS(&intel_broadwell_gt3d_info), \
391 INTEL_CHV_IDS(&intel_cherryview_info)
393 static const struct pci_device_id pciidlist[] = { /* aka */
398 #if defined(CONFIG_DRM_I915_KMS)
399 MODULE_DEVICE_TABLE(pci, pciidlist);
402 void intel_detect_pch(struct drm_device *dev)
404 struct drm_i915_private *dev_priv = dev->dev_private;
405 struct pci_dev *pch = NULL;
407 /* In all current cases, num_pipes is equivalent to the PCH_NOP setting
408 * (which really amounts to a PCH but no South Display).
410 if (INTEL_INFO(dev)->num_pipes == 0) {
411 dev_priv->pch_type = PCH_NOP;
416 * The reason to probe ISA bridge instead of Dev31:Fun0 is to
417 * make graphics device passthrough work easy for VMM, that only
418 * need to expose ISA bridge to let driver know the real hardware
419 * underneath. This is a requirement from virtualization team.
421 * In some virtualized environments (e.g. XEN), there is irrelevant
422 * ISA bridge in the system. To work reliably, we should scan trhough
423 * all the ISA bridge devices and check for the first match, instead
424 * of only checking the first one.
426 while ((pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, pch))) {
427 if (pch->vendor == PCI_VENDOR_ID_INTEL) {
428 unsigned short id = pch->device & INTEL_PCH_DEVICE_ID_MASK;
429 dev_priv->pch_id = id;
431 if (id == INTEL_PCH_IBX_DEVICE_ID_TYPE) {
432 dev_priv->pch_type = PCH_IBX;
433 DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
434 WARN_ON(!IS_GEN5(dev));
435 } else if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) {
436 dev_priv->pch_type = PCH_CPT;
437 DRM_DEBUG_KMS("Found CougarPoint PCH\n");
438 WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev)));
439 } else if (id == INTEL_PCH_PPT_DEVICE_ID_TYPE) {
440 /* PantherPoint is CPT compatible */
441 dev_priv->pch_type = PCH_CPT;
442 DRM_DEBUG_KMS("Found PantherPoint PCH\n");
443 WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev)));
444 } else if (id == INTEL_PCH_LPT_DEVICE_ID_TYPE) {
445 dev_priv->pch_type = PCH_LPT;
446 DRM_DEBUG_KMS("Found LynxPoint PCH\n");
447 WARN_ON(!IS_HASWELL(dev));
448 WARN_ON(IS_ULT(dev));
449 } else if (IS_BROADWELL(dev)) {
450 dev_priv->pch_type = PCH_LPT;
452 INTEL_PCH_LPT_LP_DEVICE_ID_TYPE;
453 DRM_DEBUG_KMS("This is Broadwell, assuming "
454 "LynxPoint LP PCH\n");
455 } else if (id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
456 dev_priv->pch_type = PCH_LPT;
457 DRM_DEBUG_KMS("Found LynxPoint LP PCH\n");
458 WARN_ON(!IS_HASWELL(dev));
459 WARN_ON(!IS_ULT(dev));
467 DRM_DEBUG_KMS("No PCH found.\n");
472 bool i915_semaphore_is_enabled(struct drm_device *dev)
474 if (INTEL_INFO(dev)->gen < 6)
477 if (i915.semaphores >= 0)
478 return i915.semaphores;
480 /* Until we get further testing... */
484 #ifdef CONFIG_INTEL_IOMMU
485 /* Enable semaphores on SNB when IO remapping is off */
486 if (INTEL_INFO(dev)->gen == 6 && intel_iommu_gfx_mapped)
493 static int i915_drm_freeze(struct drm_device *dev)
495 struct drm_i915_private *dev_priv = dev->dev_private;
496 struct drm_crtc *crtc;
497 pci_power_t opregion_target_state;
499 intel_runtime_pm_get(dev_priv);
501 /* ignore lid events during suspend */
502 mutex_lock(&dev_priv->modeset_restore_lock);
503 dev_priv->modeset_restore = MODESET_SUSPENDED;
504 mutex_unlock(&dev_priv->modeset_restore_lock);
506 /* We do a lot of poking in a lot of registers, make sure they work
508 intel_display_set_init_power(dev_priv, true);
510 drm_kms_helper_poll_disable(dev);
512 pci_save_state(dev->pdev);
514 /* If KMS is active, we do the leavevt stuff here */
515 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
518 error = i915_gem_suspend(dev);
520 dev_err(&dev->pdev->dev,
521 "GEM idle failed, resume might fail\n");
525 intel_runtime_pm_disable_interrupts(dev);
526 dev_priv->enable_hotplug_processing = false;
528 intel_suspend_gt_powersave(dev);
531 * Disable CRTCs directly since we want to preserve sw state
534 drm_modeset_lock_all(dev);
535 for_each_crtc(dev, crtc) {
536 dev_priv->display.crtc_disable(crtc);
538 drm_modeset_unlock_all(dev);
540 intel_modeset_suspend_hw(dev);
543 i915_gem_suspend_gtt_mappings(dev);
545 i915_save_state(dev);
547 if (acpi_target_system_state() >= ACPI_STATE_S3)
548 opregion_target_state = PCI_D3cold;
550 opregion_target_state = PCI_D1;
551 intel_opregion_notify_adapter(dev, opregion_target_state);
553 intel_uncore_forcewake_reset(dev, false);
554 intel_opregion_fini(dev);
557 intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED);
560 dev_priv->suspend_count++;
562 intel_display_set_init_power(dev_priv, false);
567 int i915_suspend(struct drm_device *dev, pm_message_t state)
571 if (!dev || !dev->dev_private) {
572 DRM_ERROR("dev: %p\n", dev);
573 DRM_ERROR("DRM not initialized, aborting suspend.\n");
577 if (state.event == PM_EVENT_PRETHAW)
581 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
584 error = i915_drm_freeze(dev);
588 if (state.event == PM_EVENT_SUSPEND) {
589 /* Shut down the device */
590 pci_disable_device(dev->pdev);
591 pci_set_power_state(dev->pdev, PCI_D3hot);
597 void intel_console_resume(struct work_struct *work)
599 struct drm_i915_private *dev_priv =
600 container_of(work, struct drm_i915_private,
601 console_resume_work);
602 struct drm_device *dev = dev_priv->dev;
605 intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING);
609 static int i915_drm_thaw_early(struct drm_device *dev)
611 struct drm_i915_private *dev_priv = dev->dev_private;
613 if (IS_HASWELL(dev) || IS_BROADWELL(dev))
614 hsw_disable_pc8(dev_priv);
616 intel_uncore_early_sanitize(dev, true);
617 intel_uncore_sanitize(dev);
618 intel_power_domains_init_hw(dev_priv);
623 static int __i915_drm_thaw(struct drm_device *dev, bool restore_gtt_mappings)
625 struct drm_i915_private *dev_priv = dev->dev_private;
627 if (drm_core_check_feature(dev, DRIVER_MODESET) &&
628 restore_gtt_mappings) {
629 mutex_lock(&dev->struct_mutex);
630 i915_gem_restore_gtt_mappings(dev);
631 mutex_unlock(&dev->struct_mutex);
634 i915_restore_state(dev);
635 intel_opregion_setup(dev);
637 /* KMS EnterVT equivalent */
638 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
639 intel_init_pch_refclk(dev);
640 drm_mode_config_reset(dev);
642 mutex_lock(&dev->struct_mutex);
643 if (i915_gem_init_hw(dev)) {
644 DRM_ERROR("failed to re-initialize GPU, declaring wedged!\n");
645 atomic_set_mask(I915_WEDGED, &dev_priv->gpu_error.reset_counter);
647 mutex_unlock(&dev->struct_mutex);
649 intel_runtime_pm_restore_interrupts(dev);
651 intel_modeset_init_hw(dev);
653 drm_modeset_lock_all(dev);
654 intel_modeset_setup_hw_state(dev, true);
655 drm_modeset_unlock_all(dev);
658 * ... but also need to make sure that hotplug processing
659 * doesn't cause havoc. Like in the driver load code we don't
660 * bother with the tiny race here where we might loose hotplug
664 dev_priv->enable_hotplug_processing = true;
665 /* Config may have changed between suspend and resume */
666 drm_helper_hpd_irq_event(dev);
669 intel_opregion_init(dev);
672 * The console lock can be pretty contented on resume due
673 * to all the printk activity. Try to keep it out of the hot
674 * path of resume if possible.
676 if (console_trylock()) {
677 intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING);
680 schedule_work(&dev_priv->console_resume_work);
683 mutex_lock(&dev_priv->modeset_restore_lock);
684 dev_priv->modeset_restore = MODESET_DONE;
685 mutex_unlock(&dev_priv->modeset_restore_lock);
687 intel_opregion_notify_adapter(dev, PCI_D0);
689 intel_runtime_pm_put(dev_priv);
693 static int i915_drm_thaw(struct drm_device *dev)
695 if (drm_core_check_feature(dev, DRIVER_MODESET))
696 i915_check_and_clear_faults(dev);
698 return __i915_drm_thaw(dev, true);
701 static int i915_resume_early(struct drm_device *dev)
703 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
707 * We have a resume ordering issue with the snd-hda driver also
708 * requiring our device to be power up. Due to the lack of a
709 * parent/child relationship we currently solve this with an early
712 * FIXME: This should be solved with a special hdmi sink device or
713 * similar so that power domains can be employed.
715 if (pci_enable_device(dev->pdev))
718 pci_set_master(dev->pdev);
720 return i915_drm_thaw_early(dev);
723 int i915_resume(struct drm_device *dev)
725 struct drm_i915_private *dev_priv = dev->dev_private;
729 * Platforms with opregion should have sane BIOS, older ones (gen3 and
730 * earlier) need to restore the GTT mappings since the BIOS might clear
731 * all our scratch PTEs.
733 ret = __i915_drm_thaw(dev, !dev_priv->opregion.header);
737 drm_kms_helper_poll_enable(dev);
741 static int i915_resume_legacy(struct drm_device *dev)
743 i915_resume_early(dev);
750 * i915_reset - reset chip after a hang
751 * @dev: drm device to reset
753 * Reset the chip. Useful if a hang is detected. Returns zero on successful
754 * reset or otherwise an error code.
756 * Procedure is fairly simple:
757 * - reset the chip using the reset reg
758 * - re-init context state
759 * - re-init hardware status page
760 * - re-init ring buffer
761 * - re-init interrupt state
764 int i915_reset(struct drm_device *dev)
766 struct drm_i915_private *dev_priv = dev->dev_private;
773 mutex_lock(&dev->struct_mutex);
777 simulated = dev_priv->gpu_error.stop_rings != 0;
779 ret = intel_gpu_reset(dev);
781 /* Also reset the gpu hangman. */
783 DRM_INFO("Simulated gpu hang, resetting stop_rings\n");
784 dev_priv->gpu_error.stop_rings = 0;
785 if (ret == -ENODEV) {
786 DRM_INFO("Reset not implemented, but ignoring "
787 "error for simulated gpu hangs\n");
793 DRM_ERROR("Failed to reset chip: %i\n", ret);
794 mutex_unlock(&dev->struct_mutex);
798 /* Ok, now get things going again... */
801 * Everything depends on having the GTT running, so we need to start
802 * there. Fortunately we don't need to do this unless we reset the
803 * chip at a PCI level.
805 * Next we need to restore the context, but we don't use those
808 * Ring buffer needs to be re-initialized in the KMS case, or if X
809 * was running at the time of the reset (i.e. we weren't VT
812 if (drm_core_check_feature(dev, DRIVER_MODESET) ||
813 !dev_priv->ums.mm_suspended) {
814 dev_priv->ums.mm_suspended = 0;
816 ret = i915_gem_init_hw(dev);
817 mutex_unlock(&dev->struct_mutex);
819 DRM_ERROR("Failed hw init on reset %d\n", ret);
824 * FIXME: This races pretty badly against concurrent holders of
825 * ring interrupts. This is possible since we've started to drop
826 * dev->struct_mutex in select places when waiting for the gpu.
830 * rps/rc6 re-init is necessary to restore state lost after the
831 * reset and the re-install of gt irqs. Skip for ironlake per
832 * previous concerns that it doesn't respond well to some forms
833 * of re-init after reset.
835 if (INTEL_INFO(dev)->gen > 5)
836 intel_reset_gt_powersave(dev);
840 mutex_unlock(&dev->struct_mutex);
846 static int i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
848 struct intel_device_info *intel_info =
849 (struct intel_device_info *) ent->driver_data;
851 if (IS_PRELIMINARY_HW(intel_info) && !i915.preliminary_hw_support) {
852 DRM_INFO("This hardware requires preliminary hardware support.\n"
853 "See CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT, and/or modparam preliminary_hw_support\n");
857 /* Only bind to function 0 of the device. Early generations
858 * used function 1 as a placeholder for multi-head. This causes
859 * us confusion instead, especially on the systems where both
860 * functions have the same PCI-ID!
862 if (PCI_FUNC(pdev->devfn))
865 driver.driver_features &= ~(DRIVER_USE_AGP);
867 return drm_get_pci_dev(pdev, ent, &driver);
871 i915_pci_remove(struct pci_dev *pdev)
873 struct drm_device *dev = pci_get_drvdata(pdev);
878 static int i915_pm_suspend(struct device *dev)
880 struct pci_dev *pdev = to_pci_dev(dev);
881 struct drm_device *drm_dev = pci_get_drvdata(pdev);
883 if (!drm_dev || !drm_dev->dev_private) {
884 dev_err(dev, "DRM not initialized, aborting suspend.\n");
888 if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
891 return i915_drm_freeze(drm_dev);
894 static int i915_pm_suspend_late(struct device *dev)
896 struct pci_dev *pdev = to_pci_dev(dev);
897 struct drm_device *drm_dev = pci_get_drvdata(pdev);
898 struct drm_i915_private *dev_priv = drm_dev->dev_private;
901 * We have a suspedn ordering issue with the snd-hda driver also
902 * requiring our device to be power up. Due to the lack of a
903 * parent/child relationship we currently solve this with an late
906 * FIXME: This should be solved with a special hdmi sink device or
907 * similar so that power domains can be employed.
909 if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
912 if (IS_HASWELL(drm_dev) || IS_BROADWELL(drm_dev))
913 hsw_enable_pc8(dev_priv);
915 pci_disable_device(pdev);
916 pci_set_power_state(pdev, PCI_D3hot);
921 static int i915_pm_resume_early(struct device *dev)
923 struct pci_dev *pdev = to_pci_dev(dev);
924 struct drm_device *drm_dev = pci_get_drvdata(pdev);
926 return i915_resume_early(drm_dev);
929 static int i915_pm_resume(struct device *dev)
931 struct pci_dev *pdev = to_pci_dev(dev);
932 struct drm_device *drm_dev = pci_get_drvdata(pdev);
934 return i915_resume(drm_dev);
937 static int i915_pm_freeze(struct device *dev)
939 struct pci_dev *pdev = to_pci_dev(dev);
940 struct drm_device *drm_dev = pci_get_drvdata(pdev);
942 if (!drm_dev || !drm_dev->dev_private) {
943 dev_err(dev, "DRM not initialized, aborting suspend.\n");
947 return i915_drm_freeze(drm_dev);
950 static int i915_pm_thaw_early(struct device *dev)
952 struct pci_dev *pdev = to_pci_dev(dev);
953 struct drm_device *drm_dev = pci_get_drvdata(pdev);
955 return i915_drm_thaw_early(drm_dev);
958 static int i915_pm_thaw(struct device *dev)
960 struct pci_dev *pdev = to_pci_dev(dev);
961 struct drm_device *drm_dev = pci_get_drvdata(pdev);
963 return i915_drm_thaw(drm_dev);
966 static int i915_pm_poweroff(struct device *dev)
968 struct pci_dev *pdev = to_pci_dev(dev);
969 struct drm_device *drm_dev = pci_get_drvdata(pdev);
971 return i915_drm_freeze(drm_dev);
974 static int hsw_runtime_suspend(struct drm_i915_private *dev_priv)
976 hsw_enable_pc8(dev_priv);
981 static int snb_runtime_resume(struct drm_i915_private *dev_priv)
983 struct drm_device *dev = dev_priv->dev;
985 intel_init_pch_refclk(dev);
990 static int hsw_runtime_resume(struct drm_i915_private *dev_priv)
992 hsw_disable_pc8(dev_priv);
998 * Save all Gunit registers that may be lost after a D3 and a subsequent
999 * S0i[R123] transition. The list of registers needing a save/restore is
1000 * defined in the VLV2_S0IXRegs document. This documents marks all Gunit
1001 * registers in the following way:
1002 * - Driver: saved/restored by the driver
1003 * - Punit : saved/restored by the Punit firmware
1004 * - No, w/o marking: no need to save/restore, since the register is R/O or
1005 * used internally by the HW in a way that doesn't depend
1006 * keeping the content across a suspend/resume.
1007 * - Debug : used for debugging
1009 * We save/restore all registers marked with 'Driver', with the following
1011 * - Registers out of use, including also registers marked with 'Debug'.
1012 * These have no effect on the driver's operation, so we don't save/restore
1013 * them to reduce the overhead.
1014 * - Registers that are fully setup by an initialization function called from
1015 * the resume path. For example many clock gating and RPS/RC6 registers.
1016 * - Registers that provide the right functionality with their reset defaults.
1018 * TODO: Except for registers that based on the above 3 criteria can be safely
1019 * ignored, we save/restore all others, practically treating the HW context as
1020 * a black-box for the driver. Further investigation is needed to reduce the
1021 * saved/restored registers even further, by following the same 3 criteria.
1023 static void vlv_save_gunit_s0ix_state(struct drm_i915_private *dev_priv)
1025 struct vlv_s0ix_state *s = &dev_priv->vlv_s0ix_state;
1028 /* GAM 0x4000-0x4770 */
1029 s->wr_watermark = I915_READ(GEN7_WR_WATERMARK);
1030 s->gfx_prio_ctrl = I915_READ(GEN7_GFX_PRIO_CTRL);
1031 s->arb_mode = I915_READ(ARB_MODE);
1032 s->gfx_pend_tlb0 = I915_READ(GEN7_GFX_PEND_TLB0);
1033 s->gfx_pend_tlb1 = I915_READ(GEN7_GFX_PEND_TLB1);
1035 for (i = 0; i < ARRAY_SIZE(s->lra_limits); i++)
1036 s->lra_limits[i] = I915_READ(GEN7_LRA_LIMITS_BASE + i * 4);
1038 s->media_max_req_count = I915_READ(GEN7_MEDIA_MAX_REQ_COUNT);
1039 s->gfx_max_req_count = I915_READ(GEN7_MEDIA_MAX_REQ_COUNT);
1041 s->render_hwsp = I915_READ(RENDER_HWS_PGA_GEN7);
1042 s->ecochk = I915_READ(GAM_ECOCHK);
1043 s->bsd_hwsp = I915_READ(BSD_HWS_PGA_GEN7);
1044 s->blt_hwsp = I915_READ(BLT_HWS_PGA_GEN7);
1046 s->tlb_rd_addr = I915_READ(GEN7_TLB_RD_ADDR);
1048 /* MBC 0x9024-0x91D0, 0x8500 */
1049 s->g3dctl = I915_READ(VLV_G3DCTL);
1050 s->gsckgctl = I915_READ(VLV_GSCKGCTL);
1051 s->mbctl = I915_READ(GEN6_MBCTL);
1053 /* GCP 0x9400-0x9424, 0x8100-0x810C */
1054 s->ucgctl1 = I915_READ(GEN6_UCGCTL1);
1055 s->ucgctl3 = I915_READ(GEN6_UCGCTL3);
1056 s->rcgctl1 = I915_READ(GEN6_RCGCTL1);
1057 s->rcgctl2 = I915_READ(GEN6_RCGCTL2);
1058 s->rstctl = I915_READ(GEN6_RSTCTL);
1059 s->misccpctl = I915_READ(GEN7_MISCCPCTL);
1061 /* GPM 0xA000-0xAA84, 0x8000-0x80FC */
1062 s->gfxpause = I915_READ(GEN6_GFXPAUSE);
1063 s->rpdeuhwtc = I915_READ(GEN6_RPDEUHWTC);
1064 s->rpdeuc = I915_READ(GEN6_RPDEUC);
1065 s->ecobus = I915_READ(ECOBUS);
1066 s->pwrdwnupctl = I915_READ(VLV_PWRDWNUPCTL);
1067 s->rp_down_timeout = I915_READ(GEN6_RP_DOWN_TIMEOUT);
1068 s->rp_deucsw = I915_READ(GEN6_RPDEUCSW);
1069 s->rcubmabdtmr = I915_READ(GEN6_RCUBMABDTMR);
1070 s->rcedata = I915_READ(VLV_RCEDATA);
1071 s->spare2gh = I915_READ(VLV_SPAREG2H);
1073 /* Display CZ domain, 0x4400C-0x4402C, 0x4F000-0x4F11F */
1074 s->gt_imr = I915_READ(GTIMR);
1075 s->gt_ier = I915_READ(GTIER);
1076 s->pm_imr = I915_READ(GEN6_PMIMR);
1077 s->pm_ier = I915_READ(GEN6_PMIER);
1079 for (i = 0; i < ARRAY_SIZE(s->gt_scratch); i++)
1080 s->gt_scratch[i] = I915_READ(GEN7_GT_SCRATCH_BASE + i * 4);
1082 /* GT SA CZ domain, 0x100000-0x138124 */
1083 s->tilectl = I915_READ(TILECTL);
1084 s->gt_fifoctl = I915_READ(GTFIFOCTL);
1085 s->gtlc_wake_ctrl = I915_READ(VLV_GTLC_WAKE_CTRL);
1086 s->gtlc_survive = I915_READ(VLV_GTLC_SURVIVABILITY_REG);
1087 s->pmwgicz = I915_READ(VLV_PMWGICZ);
1089 /* Gunit-Display CZ domain, 0x182028-0x1821CF */
1090 s->gu_ctl0 = I915_READ(VLV_GU_CTL0);
1091 s->gu_ctl1 = I915_READ(VLV_GU_CTL1);
1092 s->clock_gate_dis2 = I915_READ(VLV_GUNIT_CLOCK_GATE2);
1095 * Not saving any of:
1096 * DFT, 0x9800-0x9EC0
1097 * SARB, 0xB000-0xB1FC
1098 * GAC, 0x5208-0x524C, 0x14000-0x14C000
1103 static void vlv_restore_gunit_s0ix_state(struct drm_i915_private *dev_priv)
1105 struct vlv_s0ix_state *s = &dev_priv->vlv_s0ix_state;
1109 /* GAM 0x4000-0x4770 */
1110 I915_WRITE(GEN7_WR_WATERMARK, s->wr_watermark);
1111 I915_WRITE(GEN7_GFX_PRIO_CTRL, s->gfx_prio_ctrl);
1112 I915_WRITE(ARB_MODE, s->arb_mode | (0xffff << 16));
1113 I915_WRITE(GEN7_GFX_PEND_TLB0, s->gfx_pend_tlb0);
1114 I915_WRITE(GEN7_GFX_PEND_TLB1, s->gfx_pend_tlb1);
1116 for (i = 0; i < ARRAY_SIZE(s->lra_limits); i++)
1117 I915_WRITE(GEN7_LRA_LIMITS_BASE + i * 4, s->lra_limits[i]);
1119 I915_WRITE(GEN7_MEDIA_MAX_REQ_COUNT, s->media_max_req_count);
1120 I915_WRITE(GEN7_MEDIA_MAX_REQ_COUNT, s->gfx_max_req_count);
1122 I915_WRITE(RENDER_HWS_PGA_GEN7, s->render_hwsp);
1123 I915_WRITE(GAM_ECOCHK, s->ecochk);
1124 I915_WRITE(BSD_HWS_PGA_GEN7, s->bsd_hwsp);
1125 I915_WRITE(BLT_HWS_PGA_GEN7, s->blt_hwsp);
1127 I915_WRITE(GEN7_TLB_RD_ADDR, s->tlb_rd_addr);
1129 /* MBC 0x9024-0x91D0, 0x8500 */
1130 I915_WRITE(VLV_G3DCTL, s->g3dctl);
1131 I915_WRITE(VLV_GSCKGCTL, s->gsckgctl);
1132 I915_WRITE(GEN6_MBCTL, s->mbctl);
1134 /* GCP 0x9400-0x9424, 0x8100-0x810C */
1135 I915_WRITE(GEN6_UCGCTL1, s->ucgctl1);
1136 I915_WRITE(GEN6_UCGCTL3, s->ucgctl3);
1137 I915_WRITE(GEN6_RCGCTL1, s->rcgctl1);
1138 I915_WRITE(GEN6_RCGCTL2, s->rcgctl2);
1139 I915_WRITE(GEN6_RSTCTL, s->rstctl);
1140 I915_WRITE(GEN7_MISCCPCTL, s->misccpctl);
1142 /* GPM 0xA000-0xAA84, 0x8000-0x80FC */
1143 I915_WRITE(GEN6_GFXPAUSE, s->gfxpause);
1144 I915_WRITE(GEN6_RPDEUHWTC, s->rpdeuhwtc);
1145 I915_WRITE(GEN6_RPDEUC, s->rpdeuc);
1146 I915_WRITE(ECOBUS, s->ecobus);
1147 I915_WRITE(VLV_PWRDWNUPCTL, s->pwrdwnupctl);
1148 I915_WRITE(GEN6_RP_DOWN_TIMEOUT,s->rp_down_timeout);
1149 I915_WRITE(GEN6_RPDEUCSW, s->rp_deucsw);
1150 I915_WRITE(GEN6_RCUBMABDTMR, s->rcubmabdtmr);
1151 I915_WRITE(VLV_RCEDATA, s->rcedata);
1152 I915_WRITE(VLV_SPAREG2H, s->spare2gh);
1154 /* Display CZ domain, 0x4400C-0x4402C, 0x4F000-0x4F11F */
1155 I915_WRITE(GTIMR, s->gt_imr);
1156 I915_WRITE(GTIER, s->gt_ier);
1157 I915_WRITE(GEN6_PMIMR, s->pm_imr);
1158 I915_WRITE(GEN6_PMIER, s->pm_ier);
1160 for (i = 0; i < ARRAY_SIZE(s->gt_scratch); i++)
1161 I915_WRITE(GEN7_GT_SCRATCH_BASE + i * 4, s->gt_scratch[i]);
1163 /* GT SA CZ domain, 0x100000-0x138124 */
1164 I915_WRITE(TILECTL, s->tilectl);
1165 I915_WRITE(GTFIFOCTL, s->gt_fifoctl);
1167 * Preserve the GT allow wake and GFX force clock bit, they are not
1168 * be restored, as they are used to control the s0ix suspend/resume
1169 * sequence by the caller.
1171 val = I915_READ(VLV_GTLC_WAKE_CTRL);
1172 val &= VLV_GTLC_ALLOWWAKEREQ;
1173 val |= s->gtlc_wake_ctrl & ~VLV_GTLC_ALLOWWAKEREQ;
1174 I915_WRITE(VLV_GTLC_WAKE_CTRL, val);
1176 val = I915_READ(VLV_GTLC_SURVIVABILITY_REG);
1177 val &= VLV_GFX_CLK_FORCE_ON_BIT;
1178 val |= s->gtlc_survive & ~VLV_GFX_CLK_FORCE_ON_BIT;
1179 I915_WRITE(VLV_GTLC_SURVIVABILITY_REG, val);
1181 I915_WRITE(VLV_PMWGICZ, s->pmwgicz);
1183 /* Gunit-Display CZ domain, 0x182028-0x1821CF */
1184 I915_WRITE(VLV_GU_CTL0, s->gu_ctl0);
1185 I915_WRITE(VLV_GU_CTL1, s->gu_ctl1);
1186 I915_WRITE(VLV_GUNIT_CLOCK_GATE2, s->clock_gate_dis2);
1189 int vlv_force_gfx_clock(struct drm_i915_private *dev_priv, bool force_on)
1194 val = I915_READ(VLV_GTLC_SURVIVABILITY_REG);
1195 WARN_ON(!!(val & VLV_GFX_CLK_FORCE_ON_BIT) == force_on);
1197 #define COND (I915_READ(VLV_GTLC_SURVIVABILITY_REG) & VLV_GFX_CLK_STATUS_BIT)
1198 /* Wait for a previous force-off to settle */
1200 err = wait_for(!COND, 20);
1202 DRM_ERROR("timeout waiting for GFX clock force-off (%08x)\n",
1203 I915_READ(VLV_GTLC_SURVIVABILITY_REG));
1208 val = I915_READ(VLV_GTLC_SURVIVABILITY_REG);
1209 val &= ~VLV_GFX_CLK_FORCE_ON_BIT;
1211 val |= VLV_GFX_CLK_FORCE_ON_BIT;
1212 I915_WRITE(VLV_GTLC_SURVIVABILITY_REG, val);
1217 err = wait_for(COND, 20);
1219 DRM_ERROR("timeout waiting for GFX clock force-on (%08x)\n",
1220 I915_READ(VLV_GTLC_SURVIVABILITY_REG));
1226 static int vlv_allow_gt_wake(struct drm_i915_private *dev_priv, bool allow)
1231 val = I915_READ(VLV_GTLC_WAKE_CTRL);
1232 val &= ~VLV_GTLC_ALLOWWAKEREQ;
1234 val |= VLV_GTLC_ALLOWWAKEREQ;
1235 I915_WRITE(VLV_GTLC_WAKE_CTRL, val);
1236 POSTING_READ(VLV_GTLC_WAKE_CTRL);
1238 #define COND (!!(I915_READ(VLV_GTLC_PW_STATUS) & VLV_GTLC_ALLOWWAKEACK) == \
1240 err = wait_for(COND, 1);
1242 DRM_ERROR("timeout disabling GT waking\n");
1247 static int vlv_wait_for_gt_wells(struct drm_i915_private *dev_priv,
1254 mask = VLV_GTLC_PW_MEDIA_STATUS_MASK | VLV_GTLC_PW_RENDER_STATUS_MASK;
1255 val = wait_for_on ? mask : 0;
1256 #define COND ((I915_READ(VLV_GTLC_PW_STATUS) & mask) == val)
1260 DRM_DEBUG_KMS("waiting for GT wells to go %s (%08x)\n",
1261 wait_for_on ? "on" : "off",
1262 I915_READ(VLV_GTLC_PW_STATUS));
1265 * RC6 transitioning can be delayed up to 2 msec (see
1266 * valleyview_enable_rps), use 3 msec for safety.
1268 err = wait_for(COND, 3);
1270 DRM_ERROR("timeout waiting for GT wells to go %s\n",
1271 wait_for_on ? "on" : "off");
1277 static void vlv_check_no_gt_access(struct drm_i915_private *dev_priv)
1279 if (!(I915_READ(VLV_GTLC_PW_STATUS) & VLV_GTLC_ALLOWWAKEERR))
1282 DRM_ERROR("GT register access while GT waking disabled\n");
1283 I915_WRITE(VLV_GTLC_PW_STATUS, VLV_GTLC_ALLOWWAKEERR);
1286 static int vlv_runtime_suspend(struct drm_i915_private *dev_priv)
1292 * Bspec defines the following GT well on flags as debug only, so
1293 * don't treat them as hard failures.
1295 (void)vlv_wait_for_gt_wells(dev_priv, false);
1297 mask = VLV_GTLC_RENDER_CTX_EXISTS | VLV_GTLC_MEDIA_CTX_EXISTS;
1298 WARN_ON((I915_READ(VLV_GTLC_WAKE_CTRL) & mask) != mask);
1300 vlv_check_no_gt_access(dev_priv);
1302 err = vlv_force_gfx_clock(dev_priv, true);
1306 err = vlv_allow_gt_wake(dev_priv, false);
1309 vlv_save_gunit_s0ix_state(dev_priv);
1311 err = vlv_force_gfx_clock(dev_priv, false);
1318 /* For safety always re-enable waking and disable gfx clock forcing */
1319 vlv_allow_gt_wake(dev_priv, true);
1321 vlv_force_gfx_clock(dev_priv, false);
1326 static int vlv_runtime_resume(struct drm_i915_private *dev_priv)
1328 struct drm_device *dev = dev_priv->dev;
1333 * If any of the steps fail just try to continue, that's the best we
1334 * can do at this point. Return the first error code (which will also
1335 * leave RPM permanently disabled).
1337 ret = vlv_force_gfx_clock(dev_priv, true);
1339 vlv_restore_gunit_s0ix_state(dev_priv);
1341 err = vlv_allow_gt_wake(dev_priv, true);
1345 err = vlv_force_gfx_clock(dev_priv, false);
1349 vlv_check_no_gt_access(dev_priv);
1351 intel_init_clock_gating(dev);
1352 i915_gem_restore_fences(dev);
1357 static int intel_runtime_suspend(struct device *device)
1359 struct pci_dev *pdev = to_pci_dev(device);
1360 struct drm_device *dev = pci_get_drvdata(pdev);
1361 struct drm_i915_private *dev_priv = dev->dev_private;
1364 if (WARN_ON_ONCE(!(dev_priv->rps.enabled && intel_enable_rc6(dev))))
1367 WARN_ON(!HAS_RUNTIME_PM(dev));
1368 assert_force_wake_inactive(dev_priv);
1370 DRM_DEBUG_KMS("Suspending device\n");
1373 * We could deadlock here in case another thread holding struct_mutex
1374 * calls RPM suspend concurrently, since the RPM suspend will wait
1375 * first for this RPM suspend to finish. In this case the concurrent
1376 * RPM resume will be followed by its RPM suspend counterpart. Still
1377 * for consistency return -EAGAIN, which will reschedule this suspend.
1379 if (!mutex_trylock(&dev->struct_mutex)) {
1380 DRM_DEBUG_KMS("device lock contention, deffering suspend\n");
1382 * Bump the expiration timestamp, otherwise the suspend won't
1385 pm_runtime_mark_last_busy(device);
1390 * We are safe here against re-faults, since the fault handler takes
1393 i915_gem_release_all_mmaps(dev_priv);
1394 mutex_unlock(&dev->struct_mutex);
1397 * rps.work can't be rearmed here, since we get here only after making
1398 * sure the GPU is idle and the RPS freq is set to the minimum. See
1399 * intel_mark_idle().
1401 cancel_work_sync(&dev_priv->rps.work);
1402 intel_runtime_pm_disable_interrupts(dev);
1406 } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
1407 ret = hsw_runtime_suspend(dev_priv);
1408 } else if (IS_VALLEYVIEW(dev)) {
1409 ret = vlv_runtime_suspend(dev_priv);
1416 DRM_ERROR("Runtime suspend failed, disabling it (%d)\n", ret);
1417 intel_runtime_pm_restore_interrupts(dev);
1422 del_timer_sync(&dev_priv->gpu_error.hangcheck_timer);
1423 dev_priv->pm.suspended = true;
1426 * current versions of firmware which depend on this opregion
1427 * notification have repurposed the D1 definition to mean
1428 * "runtime suspended" vs. what you would normally expect (D3)
1429 * to distinguish it from notifications that might be sent
1430 * via the suspend path.
1432 intel_opregion_notify_adapter(dev, PCI_D1);
1434 DRM_DEBUG_KMS("Device suspended\n");
1438 static int intel_runtime_resume(struct device *device)
1440 struct pci_dev *pdev = to_pci_dev(device);
1441 struct drm_device *dev = pci_get_drvdata(pdev);
1442 struct drm_i915_private *dev_priv = dev->dev_private;
1445 WARN_ON(!HAS_RUNTIME_PM(dev));
1447 DRM_DEBUG_KMS("Resuming device\n");
1449 intel_opregion_notify_adapter(dev, PCI_D0);
1450 dev_priv->pm.suspended = false;
1453 ret = snb_runtime_resume(dev_priv);
1454 } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
1455 ret = hsw_runtime_resume(dev_priv);
1456 } else if (IS_VALLEYVIEW(dev)) {
1457 ret = vlv_runtime_resume(dev_priv);
1464 * No point of rolling back things in case of an error, as the best
1465 * we can do is to hope that things will still work (and disable RPM).
1467 i915_gem_init_swizzling(dev);
1468 gen6_update_ring_freq(dev);
1470 intel_runtime_pm_restore_interrupts(dev);
1471 intel_reset_gt_powersave(dev);
1474 DRM_ERROR("Runtime resume failed, disabling it (%d)\n", ret);
1476 DRM_DEBUG_KMS("Device resumed\n");
1481 static const struct dev_pm_ops i915_pm_ops = {
1482 .suspend = i915_pm_suspend,
1483 .suspend_late = i915_pm_suspend_late,
1484 .resume_early = i915_pm_resume_early,
1485 .resume = i915_pm_resume,
1486 .freeze = i915_pm_freeze,
1487 .thaw_early = i915_pm_thaw_early,
1488 .thaw = i915_pm_thaw,
1489 .poweroff = i915_pm_poweroff,
1490 .restore_early = i915_pm_resume_early,
1491 .restore = i915_pm_resume,
1492 .runtime_suspend = intel_runtime_suspend,
1493 .runtime_resume = intel_runtime_resume,
1496 static const struct vm_operations_struct i915_gem_vm_ops = {
1497 .fault = i915_gem_fault,
1498 .open = drm_gem_vm_open,
1499 .close = drm_gem_vm_close,
1502 static const struct file_operations i915_driver_fops = {
1503 .owner = THIS_MODULE,
1505 .release = drm_release,
1506 .unlocked_ioctl = drm_ioctl,
1507 .mmap = drm_gem_mmap,
1510 #ifdef CONFIG_COMPAT
1511 .compat_ioctl = i915_compat_ioctl,
1513 .llseek = noop_llseek,
1516 static struct drm_driver driver = {
1517 /* Don't use MTRRs here; the Xserver or userspace app should
1518 * deal with them for Intel hardware.
1522 DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM | DRIVER_PRIME |
1524 .load = i915_driver_load,
1525 .unload = i915_driver_unload,
1526 .open = i915_driver_open,
1527 .lastclose = i915_driver_lastclose,
1528 .preclose = i915_driver_preclose,
1529 .postclose = i915_driver_postclose,
1531 /* Used in place of i915_pm_ops for non-DRIVER_MODESET */
1532 .suspend = i915_suspend,
1533 .resume = i915_resume_legacy,
1535 .device_is_agp = i915_driver_device_is_agp,
1536 .master_create = i915_master_create,
1537 .master_destroy = i915_master_destroy,
1538 #if defined(CONFIG_DEBUG_FS)
1539 .debugfs_init = i915_debugfs_init,
1540 .debugfs_cleanup = i915_debugfs_cleanup,
1542 .gem_free_object = i915_gem_free_object,
1543 .gem_vm_ops = &i915_gem_vm_ops,
1545 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
1546 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
1547 .gem_prime_export = i915_gem_prime_export,
1548 .gem_prime_import = i915_gem_prime_import,
1550 .dumb_create = i915_gem_dumb_create,
1551 .dumb_map_offset = i915_gem_mmap_gtt,
1552 .dumb_destroy = drm_gem_dumb_destroy,
1553 .ioctls = i915_ioctls,
1554 .fops = &i915_driver_fops,
1555 .name = DRIVER_NAME,
1556 .desc = DRIVER_DESC,
1557 .date = DRIVER_DATE,
1558 .major = DRIVER_MAJOR,
1559 .minor = DRIVER_MINOR,
1560 .patchlevel = DRIVER_PATCHLEVEL,
1563 static struct pci_driver i915_pci_driver = {
1564 .name = DRIVER_NAME,
1565 .id_table = pciidlist,
1566 .probe = i915_pci_probe,
1567 .remove = i915_pci_remove,
1568 .driver.pm = &i915_pm_ops,
1571 static int __init i915_init(void)
1573 driver.num_ioctls = i915_max_ioctl;
1576 * If CONFIG_DRM_I915_KMS is set, default to KMS unless
1577 * explicitly disabled with the module pararmeter.
1579 * Otherwise, just follow the parameter (defaulting to off).
1581 * Allow optional vga_text_mode_force boot option to override
1582 * the default behavior.
1584 #if defined(CONFIG_DRM_I915_KMS)
1585 if (i915.modeset != 0)
1586 driver.driver_features |= DRIVER_MODESET;
1588 if (i915.modeset == 1)
1589 driver.driver_features |= DRIVER_MODESET;
1591 #ifdef CONFIG_VGA_CONSOLE
1592 if (vgacon_text_force() && i915.modeset == -1)
1593 driver.driver_features &= ~DRIVER_MODESET;
1596 if (!(driver.driver_features & DRIVER_MODESET)) {
1597 driver.get_vblank_timestamp = NULL;
1598 #ifndef CONFIG_DRM_I915_UMS
1599 /* Silently fail loading to not upset userspace. */
1600 DRM_DEBUG_DRIVER("KMS and UMS disabled.\n");
1605 return drm_pci_init(&driver, &i915_pci_driver);
1608 static void __exit i915_exit(void)
1610 #ifndef CONFIG_DRM_I915_UMS
1611 if (!(driver.driver_features & DRIVER_MODESET))
1612 return; /* Never loaded a driver. */
1615 drm_pci_exit(&driver, &i915_pci_driver);
1618 module_init(i915_init);
1619 module_exit(i915_exit);
1621 MODULE_AUTHOR(DRIVER_AUTHOR);
1622 MODULE_DESCRIPTION(DRIVER_DESC);
1623 MODULE_LICENSE("GPL and additional rights");