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/apple-gmux.h>
39 #include <linux/console.h>
40 #include <linux/module.h>
41 #include <linux/pm_runtime.h>
42 #include <linux/vgaarb.h>
43 #include <linux/vga_switcheroo.h>
44 #include <drm/drm_crtc_helper.h>
46 static struct drm_driver driver
;
48 #define GEN_DEFAULT_PIPEOFFSETS \
49 .pipe_offsets = { PIPE_A_OFFSET, PIPE_B_OFFSET, \
50 PIPE_C_OFFSET, PIPE_EDP_OFFSET }, \
51 .trans_offsets = { TRANSCODER_A_OFFSET, TRANSCODER_B_OFFSET, \
52 TRANSCODER_C_OFFSET, TRANSCODER_EDP_OFFSET }, \
53 .palette_offsets = { PALETTE_A_OFFSET, PALETTE_B_OFFSET }
55 #define GEN_CHV_PIPEOFFSETS \
56 .pipe_offsets = { PIPE_A_OFFSET, PIPE_B_OFFSET, \
57 CHV_PIPE_C_OFFSET }, \
58 .trans_offsets = { TRANSCODER_A_OFFSET, TRANSCODER_B_OFFSET, \
59 CHV_TRANSCODER_C_OFFSET, }, \
60 .palette_offsets = { PALETTE_A_OFFSET, PALETTE_B_OFFSET, \
61 CHV_PALETTE_C_OFFSET }
63 #define CURSOR_OFFSETS \
64 .cursor_offsets = { CURSOR_A_OFFSET, CURSOR_B_OFFSET, CHV_CURSOR_C_OFFSET }
66 #define IVB_CURSOR_OFFSETS \
67 .cursor_offsets = { CURSOR_A_OFFSET, IVB_CURSOR_B_OFFSET, IVB_CURSOR_C_OFFSET }
70 .color = { .degamma_lut_size = 512, .gamma_lut_size = 512 }
72 .color = { .degamma_lut_size = 65, .gamma_lut_size = 257 }
74 static const struct intel_device_info intel_i830_info
= {
75 .gen
= 2, .is_mobile
= 1, .cursor_needs_physical
= 1, .num_pipes
= 2,
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_845g_info
= {
83 .gen
= 2, .num_pipes
= 1,
84 .has_overlay
= 1, .overlay_needs_physical
= 1,
85 .ring_mask
= RENDER_RING
,
86 GEN_DEFAULT_PIPEOFFSETS
,
90 static const struct intel_device_info intel_i85x_info
= {
91 .gen
= 2, .is_i85x
= 1, .is_mobile
= 1, .num_pipes
= 2,
92 .cursor_needs_physical
= 1,
93 .has_overlay
= 1, .overlay_needs_physical
= 1,
95 .ring_mask
= RENDER_RING
,
96 GEN_DEFAULT_PIPEOFFSETS
,
100 static const struct intel_device_info intel_i865g_info
= {
101 .gen
= 2, .num_pipes
= 1,
102 .has_overlay
= 1, .overlay_needs_physical
= 1,
103 .ring_mask
= RENDER_RING
,
104 GEN_DEFAULT_PIPEOFFSETS
,
108 static const struct intel_device_info intel_i915g_info
= {
109 .gen
= 3, .is_i915g
= 1, .cursor_needs_physical
= 1, .num_pipes
= 2,
110 .has_overlay
= 1, .overlay_needs_physical
= 1,
111 .ring_mask
= RENDER_RING
,
112 GEN_DEFAULT_PIPEOFFSETS
,
115 static const struct intel_device_info intel_i915gm_info
= {
116 .gen
= 3, .is_mobile
= 1, .num_pipes
= 2,
117 .cursor_needs_physical
= 1,
118 .has_overlay
= 1, .overlay_needs_physical
= 1,
121 .ring_mask
= RENDER_RING
,
122 GEN_DEFAULT_PIPEOFFSETS
,
125 static const struct intel_device_info intel_i945g_info
= {
126 .gen
= 3, .has_hotplug
= 1, .cursor_needs_physical
= 1, .num_pipes
= 2,
127 .has_overlay
= 1, .overlay_needs_physical
= 1,
128 .ring_mask
= RENDER_RING
,
129 GEN_DEFAULT_PIPEOFFSETS
,
132 static const struct intel_device_info intel_i945gm_info
= {
133 .gen
= 3, .is_i945gm
= 1, .is_mobile
= 1, .num_pipes
= 2,
134 .has_hotplug
= 1, .cursor_needs_physical
= 1,
135 .has_overlay
= 1, .overlay_needs_physical
= 1,
138 .ring_mask
= RENDER_RING
,
139 GEN_DEFAULT_PIPEOFFSETS
,
143 static const struct intel_device_info intel_i965g_info
= {
144 .gen
= 4, .is_broadwater
= 1, .num_pipes
= 2,
147 .ring_mask
= RENDER_RING
,
148 GEN_DEFAULT_PIPEOFFSETS
,
152 static const struct intel_device_info intel_i965gm_info
= {
153 .gen
= 4, .is_crestline
= 1, .num_pipes
= 2,
154 .is_mobile
= 1, .has_fbc
= 1, .has_hotplug
= 1,
157 .ring_mask
= RENDER_RING
,
158 GEN_DEFAULT_PIPEOFFSETS
,
162 static const struct intel_device_info intel_g33_info
= {
163 .gen
= 3, .is_g33
= 1, .num_pipes
= 2,
164 .need_gfx_hws
= 1, .has_hotplug
= 1,
166 .ring_mask
= RENDER_RING
,
167 GEN_DEFAULT_PIPEOFFSETS
,
171 static const struct intel_device_info intel_g45_info
= {
172 .gen
= 4, .is_g4x
= 1, .need_gfx_hws
= 1, .num_pipes
= 2,
173 .has_pipe_cxsr
= 1, .has_hotplug
= 1,
174 .ring_mask
= RENDER_RING
| BSD_RING
,
175 GEN_DEFAULT_PIPEOFFSETS
,
179 static const struct intel_device_info intel_gm45_info
= {
180 .gen
= 4, .is_g4x
= 1, .num_pipes
= 2,
181 .is_mobile
= 1, .need_gfx_hws
= 1, .has_fbc
= 1,
182 .has_pipe_cxsr
= 1, .has_hotplug
= 1,
184 .ring_mask
= RENDER_RING
| BSD_RING
,
185 GEN_DEFAULT_PIPEOFFSETS
,
189 static const struct intel_device_info intel_pineview_info
= {
190 .gen
= 3, .is_g33
= 1, .is_pineview
= 1, .is_mobile
= 1, .num_pipes
= 2,
191 .need_gfx_hws
= 1, .has_hotplug
= 1,
193 GEN_DEFAULT_PIPEOFFSETS
,
197 static const struct intel_device_info intel_ironlake_d_info
= {
198 .gen
= 5, .num_pipes
= 2,
199 .need_gfx_hws
= 1, .has_hotplug
= 1,
200 .ring_mask
= RENDER_RING
| BSD_RING
,
201 GEN_DEFAULT_PIPEOFFSETS
,
205 static const struct intel_device_info intel_ironlake_m_info
= {
206 .gen
= 5, .is_mobile
= 1, .num_pipes
= 2,
207 .need_gfx_hws
= 1, .has_hotplug
= 1,
209 .ring_mask
= RENDER_RING
| BSD_RING
,
210 GEN_DEFAULT_PIPEOFFSETS
,
214 static const struct intel_device_info intel_sandybridge_d_info
= {
215 .gen
= 6, .num_pipes
= 2,
216 .need_gfx_hws
= 1, .has_hotplug
= 1,
218 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
,
220 GEN_DEFAULT_PIPEOFFSETS
,
224 static const struct intel_device_info intel_sandybridge_m_info
= {
225 .gen
= 6, .is_mobile
= 1, .num_pipes
= 2,
226 .need_gfx_hws
= 1, .has_hotplug
= 1,
228 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
,
230 GEN_DEFAULT_PIPEOFFSETS
,
234 #define GEN7_FEATURES \
235 .gen = 7, .num_pipes = 3, \
236 .need_gfx_hws = 1, .has_hotplug = 1, \
238 .ring_mask = RENDER_RING | BSD_RING | BLT_RING, \
240 GEN_DEFAULT_PIPEOFFSETS, \
243 static const struct intel_device_info intel_ivybridge_d_info
= {
248 static const struct intel_device_info intel_ivybridge_m_info
= {
254 static const struct intel_device_info intel_ivybridge_q_info
= {
257 .num_pipes
= 0, /* legal, last one wins */
260 #define VLV_FEATURES \
261 .gen = 7, .num_pipes = 2, \
262 .need_gfx_hws = 1, .has_hotplug = 1, \
263 .ring_mask = RENDER_RING | BSD_RING | BLT_RING, \
264 .display_mmio_offset = VLV_DISPLAY_BASE, \
265 GEN_DEFAULT_PIPEOFFSETS, \
268 static const struct intel_device_info intel_valleyview_m_info
= {
274 static const struct intel_device_info intel_valleyview_d_info
= {
279 #define HSW_FEATURES \
281 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING, \
285 static const struct intel_device_info intel_haswell_d_info
= {
290 static const struct intel_device_info intel_haswell_m_info
= {
296 #define BDW_FEATURES \
300 static const struct intel_device_info intel_broadwell_d_info
= {
305 static const struct intel_device_info intel_broadwell_m_info
= {
307 .gen
= 8, .is_mobile
= 1,
310 static const struct intel_device_info intel_broadwell_gt3d_info
= {
313 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
| VEBOX_RING
| BSD2_RING
,
316 static const struct intel_device_info intel_broadwell_gt3m_info
= {
318 .gen
= 8, .is_mobile
= 1,
319 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
| VEBOX_RING
| BSD2_RING
,
322 static const struct intel_device_info intel_cherryview_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
,
327 .display_mmio_offset
= VLV_DISPLAY_BASE
,
333 static const struct intel_device_info intel_skylake_info
= {
339 static const struct intel_device_info intel_skylake_gt3_info
= {
343 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
| VEBOX_RING
| BSD2_RING
,
346 static const struct intel_device_info intel_broxton_info
= {
350 .need_gfx_hws
= 1, .has_hotplug
= 1,
351 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
| VEBOX_RING
,
356 GEN_DEFAULT_PIPEOFFSETS
,
361 static const struct intel_device_info intel_kabylake_info
= {
367 static const struct intel_device_info intel_kabylake_gt3_info
= {
371 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
| VEBOX_RING
| BSD2_RING
,
375 * Make sure any device matches here are from most specific to most
376 * general. For example, since the Quanta match is based on the subsystem
377 * and subvendor IDs, we need it to come before the more general IVB
378 * PCI ID matches, otherwise we'll use the wrong info struct above.
380 static const struct pci_device_id pciidlist
[] = {
381 INTEL_I830_IDS(&intel_i830_info
),
382 INTEL_I845G_IDS(&intel_845g_info
),
383 INTEL_I85X_IDS(&intel_i85x_info
),
384 INTEL_I865G_IDS(&intel_i865g_info
),
385 INTEL_I915G_IDS(&intel_i915g_info
),
386 INTEL_I915GM_IDS(&intel_i915gm_info
),
387 INTEL_I945G_IDS(&intel_i945g_info
),
388 INTEL_I945GM_IDS(&intel_i945gm_info
),
389 INTEL_I965G_IDS(&intel_i965g_info
),
390 INTEL_G33_IDS(&intel_g33_info
),
391 INTEL_I965GM_IDS(&intel_i965gm_info
),
392 INTEL_GM45_IDS(&intel_gm45_info
),
393 INTEL_G45_IDS(&intel_g45_info
),
394 INTEL_PINEVIEW_IDS(&intel_pineview_info
),
395 INTEL_IRONLAKE_D_IDS(&intel_ironlake_d_info
),
396 INTEL_IRONLAKE_M_IDS(&intel_ironlake_m_info
),
397 INTEL_SNB_D_IDS(&intel_sandybridge_d_info
),
398 INTEL_SNB_M_IDS(&intel_sandybridge_m_info
),
399 INTEL_IVB_Q_IDS(&intel_ivybridge_q_info
), /* must be first IVB */
400 INTEL_IVB_M_IDS(&intel_ivybridge_m_info
),
401 INTEL_IVB_D_IDS(&intel_ivybridge_d_info
),
402 INTEL_HSW_D_IDS(&intel_haswell_d_info
),
403 INTEL_HSW_M_IDS(&intel_haswell_m_info
),
404 INTEL_VLV_M_IDS(&intel_valleyview_m_info
),
405 INTEL_VLV_D_IDS(&intel_valleyview_d_info
),
406 INTEL_BDW_GT12M_IDS(&intel_broadwell_m_info
),
407 INTEL_BDW_GT12D_IDS(&intel_broadwell_d_info
),
408 INTEL_BDW_GT3M_IDS(&intel_broadwell_gt3m_info
),
409 INTEL_BDW_GT3D_IDS(&intel_broadwell_gt3d_info
),
410 INTEL_CHV_IDS(&intel_cherryview_info
),
411 INTEL_SKL_GT1_IDS(&intel_skylake_info
),
412 INTEL_SKL_GT2_IDS(&intel_skylake_info
),
413 INTEL_SKL_GT3_IDS(&intel_skylake_gt3_info
),
414 INTEL_SKL_GT4_IDS(&intel_skylake_gt3_info
),
415 INTEL_BXT_IDS(&intel_broxton_info
),
416 INTEL_KBL_GT1_IDS(&intel_kabylake_info
),
417 INTEL_KBL_GT2_IDS(&intel_kabylake_info
),
418 INTEL_KBL_GT3_IDS(&intel_kabylake_gt3_info
),
419 INTEL_KBL_GT4_IDS(&intel_kabylake_gt3_info
),
423 MODULE_DEVICE_TABLE(pci
, pciidlist
);
425 static enum intel_pch
intel_virt_detect_pch(struct drm_device
*dev
)
427 enum intel_pch ret
= PCH_NOP
;
430 * In a virtualized passthrough environment we can be in a
431 * setup where the ISA bridge is not able to be passed through.
432 * In this case, a south bridge can be emulated and we have to
433 * make an educated guess as to which PCH is really there.
438 DRM_DEBUG_KMS("Assuming Ibex Peak PCH\n");
439 } else if (IS_GEN6(dev
) || IS_IVYBRIDGE(dev
)) {
441 DRM_DEBUG_KMS("Assuming CouarPoint PCH\n");
442 } else if (IS_HASWELL(dev
) || IS_BROADWELL(dev
)) {
444 DRM_DEBUG_KMS("Assuming LynxPoint PCH\n");
445 } else if (IS_SKYLAKE(dev
) || IS_KABYLAKE(dev
)) {
447 DRM_DEBUG_KMS("Assuming SunrisePoint PCH\n");
453 void intel_detect_pch(struct drm_device
*dev
)
455 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
456 struct pci_dev
*pch
= NULL
;
458 /* In all current cases, num_pipes is equivalent to the PCH_NOP setting
459 * (which really amounts to a PCH but no South Display).
461 if (INTEL_INFO(dev
)->num_pipes
== 0) {
462 dev_priv
->pch_type
= PCH_NOP
;
467 * The reason to probe ISA bridge instead of Dev31:Fun0 is to
468 * make graphics device passthrough work easy for VMM, that only
469 * need to expose ISA bridge to let driver know the real hardware
470 * underneath. This is a requirement from virtualization team.
472 * In some virtualized environments (e.g. XEN), there is irrelevant
473 * ISA bridge in the system. To work reliably, we should scan trhough
474 * all the ISA bridge devices and check for the first match, instead
475 * of only checking the first one.
477 while ((pch
= pci_get_class(PCI_CLASS_BRIDGE_ISA
<< 8, pch
))) {
478 if (pch
->vendor
== PCI_VENDOR_ID_INTEL
) {
479 unsigned short id
= pch
->device
& INTEL_PCH_DEVICE_ID_MASK
;
480 dev_priv
->pch_id
= id
;
482 if (id
== INTEL_PCH_IBX_DEVICE_ID_TYPE
) {
483 dev_priv
->pch_type
= PCH_IBX
;
484 DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
485 WARN_ON(!IS_GEN5(dev
));
486 } else if (id
== INTEL_PCH_CPT_DEVICE_ID_TYPE
) {
487 dev_priv
->pch_type
= PCH_CPT
;
488 DRM_DEBUG_KMS("Found CougarPoint PCH\n");
489 WARN_ON(!(IS_GEN6(dev
) || IS_IVYBRIDGE(dev
)));
490 } else if (id
== INTEL_PCH_PPT_DEVICE_ID_TYPE
) {
491 /* PantherPoint is CPT compatible */
492 dev_priv
->pch_type
= PCH_CPT
;
493 DRM_DEBUG_KMS("Found PantherPoint PCH\n");
494 WARN_ON(!(IS_GEN6(dev
) || IS_IVYBRIDGE(dev
)));
495 } else if (id
== INTEL_PCH_LPT_DEVICE_ID_TYPE
) {
496 dev_priv
->pch_type
= PCH_LPT
;
497 DRM_DEBUG_KMS("Found LynxPoint PCH\n");
498 WARN_ON(!IS_HASWELL(dev
) && !IS_BROADWELL(dev
));
499 WARN_ON(IS_HSW_ULT(dev
) || IS_BDW_ULT(dev
));
500 } else if (id
== INTEL_PCH_LPT_LP_DEVICE_ID_TYPE
) {
501 dev_priv
->pch_type
= PCH_LPT
;
502 DRM_DEBUG_KMS("Found LynxPoint LP PCH\n");
503 WARN_ON(!IS_HASWELL(dev
) && !IS_BROADWELL(dev
));
504 WARN_ON(!IS_HSW_ULT(dev
) && !IS_BDW_ULT(dev
));
505 } else if (id
== INTEL_PCH_SPT_DEVICE_ID_TYPE
) {
506 dev_priv
->pch_type
= PCH_SPT
;
507 DRM_DEBUG_KMS("Found SunrisePoint PCH\n");
508 WARN_ON(!IS_SKYLAKE(dev
) &&
510 } else if (id
== INTEL_PCH_SPT_LP_DEVICE_ID_TYPE
) {
511 dev_priv
->pch_type
= PCH_SPT
;
512 DRM_DEBUG_KMS("Found SunrisePoint LP PCH\n");
513 WARN_ON(!IS_SKYLAKE(dev
) &&
515 } else if ((id
== INTEL_PCH_P2X_DEVICE_ID_TYPE
) ||
516 (id
== INTEL_PCH_P3X_DEVICE_ID_TYPE
) ||
517 ((id
== INTEL_PCH_QEMU_DEVICE_ID_TYPE
) &&
518 pch
->subsystem_vendor
== 0x1af4 &&
519 pch
->subsystem_device
== 0x1100)) {
520 dev_priv
->pch_type
= intel_virt_detect_pch(dev
);
528 DRM_DEBUG_KMS("No PCH found.\n");
533 bool i915_semaphore_is_enabled(struct drm_device
*dev
)
535 if (INTEL_INFO(dev
)->gen
< 6)
538 if (i915
.semaphores
>= 0)
539 return i915
.semaphores
;
541 /* TODO: make semaphores and Execlists play nicely together */
542 if (i915
.enable_execlists
)
545 /* Until we get further testing... */
549 #ifdef CONFIG_INTEL_IOMMU
550 /* Enable semaphores on SNB when IO remapping is off */
551 if (INTEL_INFO(dev
)->gen
== 6 && intel_iommu_gfx_mapped
)
558 static void intel_suspend_encoders(struct drm_i915_private
*dev_priv
)
560 struct drm_device
*dev
= dev_priv
->dev
;
561 struct intel_encoder
*encoder
;
563 drm_modeset_lock_all(dev
);
564 for_each_intel_encoder(dev
, encoder
)
565 if (encoder
->suspend
)
566 encoder
->suspend(encoder
);
567 drm_modeset_unlock_all(dev
);
570 static int intel_suspend_complete(struct drm_i915_private
*dev_priv
);
571 static int vlv_resume_prepare(struct drm_i915_private
*dev_priv
,
573 static int bxt_resume_prepare(struct drm_i915_private
*dev_priv
);
575 static bool suspend_to_idle(struct drm_i915_private
*dev_priv
)
577 #if IS_ENABLED(CONFIG_ACPI_SLEEP)
578 if (acpi_target_system_state() < ACPI_STATE_S3
)
584 static int i915_drm_suspend(struct drm_device
*dev
)
586 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
587 pci_power_t opregion_target_state
;
590 /* ignore lid events during suspend */
591 mutex_lock(&dev_priv
->modeset_restore_lock
);
592 dev_priv
->modeset_restore
= MODESET_SUSPENDED
;
593 mutex_unlock(&dev_priv
->modeset_restore_lock
);
595 disable_rpm_wakeref_asserts(dev_priv
);
597 /* We do a lot of poking in a lot of registers, make sure they work
599 intel_display_set_init_power(dev_priv
, true);
601 drm_kms_helper_poll_disable(dev
);
603 pci_save_state(dev
->pdev
);
605 error
= i915_gem_suspend(dev
);
607 dev_err(&dev
->pdev
->dev
,
608 "GEM idle failed, resume might fail\n");
612 intel_guc_suspend(dev
);
614 intel_suspend_gt_powersave(dev
);
616 intel_display_suspend(dev
);
618 intel_dp_mst_suspend(dev
);
620 intel_runtime_pm_disable_interrupts(dev_priv
);
621 intel_hpd_cancel_work(dev_priv
);
623 intel_suspend_encoders(dev_priv
);
625 intel_suspend_hw(dev
);
627 i915_gem_suspend_gtt_mappings(dev
);
629 i915_save_state(dev
);
631 opregion_target_state
= suspend_to_idle(dev_priv
) ? PCI_D1
: PCI_D3cold
;
632 intel_opregion_notify_adapter(dev
, opregion_target_state
);
634 intel_uncore_forcewake_reset(dev
, false);
635 intel_opregion_fini(dev
);
637 intel_fbdev_set_suspend(dev
, FBINFO_STATE_SUSPENDED
, true);
639 dev_priv
->suspend_count
++;
641 intel_display_set_init_power(dev_priv
, false);
643 if (HAS_CSR(dev_priv
))
644 flush_work(&dev_priv
->csr
.work
);
647 enable_rpm_wakeref_asserts(dev_priv
);
652 static int i915_drm_suspend_late(struct drm_device
*drm_dev
, bool hibernation
)
654 struct drm_i915_private
*dev_priv
= drm_dev
->dev_private
;
658 disable_rpm_wakeref_asserts(dev_priv
);
660 fw_csr
= suspend_to_idle(dev_priv
) && dev_priv
->csr
.dmc_payload
;
662 * In case of firmware assisted context save/restore don't manually
663 * deinit the power domains. This also means the CSR/DMC firmware will
664 * stay active, it will power down any HW resources as required and
665 * also enable deeper system power states that would be blocked if the
666 * firmware was inactive.
669 intel_power_domains_suspend(dev_priv
);
671 ret
= intel_suspend_complete(dev_priv
);
674 DRM_ERROR("Suspend complete failed: %d\n", ret
);
676 intel_power_domains_init_hw(dev_priv
, true);
681 pci_disable_device(drm_dev
->pdev
);
683 * During hibernation on some platforms the BIOS may try to access
684 * the device even though it's already in D3 and hang the machine. So
685 * leave the device in D0 on those platforms and hope the BIOS will
686 * power down the device properly. The issue was seen on multiple old
687 * GENs with different BIOS vendors, so having an explicit blacklist
688 * is inpractical; apply the workaround on everything pre GEN6. The
689 * platforms where the issue was seen:
690 * Lenovo Thinkpad X301, X61s, X60, T60, X41
694 if (!(hibernation
&& INTEL_INFO(dev_priv
)->gen
< 6))
695 pci_set_power_state(drm_dev
->pdev
, PCI_D3hot
);
697 dev_priv
->suspended_to_idle
= suspend_to_idle(dev_priv
);
700 enable_rpm_wakeref_asserts(dev_priv
);
705 int i915_suspend_switcheroo(struct drm_device
*dev
, pm_message_t state
)
709 if (!dev
|| !dev
->dev_private
) {
710 DRM_ERROR("dev: %p\n", dev
);
711 DRM_ERROR("DRM not initialized, aborting suspend.\n");
715 if (WARN_ON_ONCE(state
.event
!= PM_EVENT_SUSPEND
&&
716 state
.event
!= PM_EVENT_FREEZE
))
719 if (dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
722 error
= i915_drm_suspend(dev
);
726 return i915_drm_suspend_late(dev
, false);
729 static int i915_drm_resume(struct drm_device
*dev
)
731 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
733 disable_rpm_wakeref_asserts(dev_priv
);
735 mutex_lock(&dev
->struct_mutex
);
736 i915_gem_restore_gtt_mappings(dev
);
737 mutex_unlock(&dev
->struct_mutex
);
739 i915_restore_state(dev
);
740 intel_opregion_setup(dev
);
742 intel_init_pch_refclk(dev
);
743 drm_mode_config_reset(dev
);
746 * Interrupts have to be enabled before any batches are run. If not the
747 * GPU will hang. i915_gem_init_hw() will initiate batches to
748 * update/restore the context.
750 * Modeset enabling in intel_modeset_init_hw() also needs working
753 intel_runtime_pm_enable_interrupts(dev_priv
);
755 mutex_lock(&dev
->struct_mutex
);
756 if (i915_gem_init_hw(dev
)) {
757 DRM_ERROR("failed to re-initialize GPU, declaring wedged!\n");
758 atomic_or(I915_WEDGED
, &dev_priv
->gpu_error
.reset_counter
);
760 mutex_unlock(&dev
->struct_mutex
);
762 intel_guc_resume(dev
);
764 intel_modeset_init_hw(dev
);
766 spin_lock_irq(&dev_priv
->irq_lock
);
767 if (dev_priv
->display
.hpd_irq_setup
)
768 dev_priv
->display
.hpd_irq_setup(dev
);
769 spin_unlock_irq(&dev_priv
->irq_lock
);
771 intel_dp_mst_resume(dev
);
773 intel_display_resume(dev
);
776 * ... but also need to make sure that hotplug processing
777 * doesn't cause havoc. Like in the driver load code we don't
778 * bother with the tiny race here where we might loose hotplug
781 intel_hpd_init(dev_priv
);
782 /* Config may have changed between suspend and resume */
783 drm_helper_hpd_irq_event(dev
);
785 intel_opregion_init(dev
);
787 intel_fbdev_set_suspend(dev
, FBINFO_STATE_RUNNING
, false);
789 mutex_lock(&dev_priv
->modeset_restore_lock
);
790 dev_priv
->modeset_restore
= MODESET_DONE
;
791 mutex_unlock(&dev_priv
->modeset_restore_lock
);
793 intel_opregion_notify_adapter(dev
, PCI_D0
);
795 drm_kms_helper_poll_enable(dev
);
797 enable_rpm_wakeref_asserts(dev_priv
);
802 static int i915_drm_resume_early(struct drm_device
*dev
)
804 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
808 * We have a resume ordering issue with the snd-hda driver also
809 * requiring our device to be power up. Due to the lack of a
810 * parent/child relationship we currently solve this with an early
813 * FIXME: This should be solved with a special hdmi sink device or
814 * similar so that power domains can be employed.
816 if (pci_enable_device(dev
->pdev
)) {
821 pci_set_master(dev
->pdev
);
823 disable_rpm_wakeref_asserts(dev_priv
);
825 if (IS_VALLEYVIEW(dev_priv
) || IS_CHERRYVIEW(dev_priv
))
826 ret
= vlv_resume_prepare(dev_priv
, false);
828 DRM_ERROR("Resume prepare failed: %d, continuing anyway\n",
831 intel_uncore_early_sanitize(dev
, true);
834 ret
= bxt_resume_prepare(dev_priv
);
835 else if (IS_HASWELL(dev_priv
) || IS_BROADWELL(dev_priv
))
836 hsw_disable_pc8(dev_priv
);
838 intel_uncore_sanitize(dev
);
840 if (!(dev_priv
->suspended_to_idle
&& dev_priv
->csr
.dmc_payload
))
841 intel_power_domains_init_hw(dev_priv
, true);
844 dev_priv
->suspended_to_idle
= false;
846 enable_rpm_wakeref_asserts(dev_priv
);
851 int i915_resume_switcheroo(struct drm_device
*dev
)
855 if (dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
858 ret
= i915_drm_resume_early(dev
);
862 return i915_drm_resume(dev
);
866 * i915_reset - reset chip after a hang
867 * @dev: drm device to reset
869 * Reset the chip. Useful if a hang is detected. Returns zero on successful
870 * reset or otherwise an error code.
872 * Procedure is fairly simple:
873 * - reset the chip using the reset reg
874 * - re-init context state
875 * - re-init hardware status page
876 * - re-init ring buffer
877 * - re-init interrupt state
880 int i915_reset(struct drm_device
*dev
)
882 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
886 intel_reset_gt_powersave(dev
);
888 mutex_lock(&dev
->struct_mutex
);
892 simulated
= dev_priv
->gpu_error
.stop_rings
!= 0;
894 ret
= intel_gpu_reset(dev
, ALL_ENGINES
);
896 /* Also reset the gpu hangman. */
898 DRM_INFO("Simulated gpu hang, resetting stop_rings\n");
899 dev_priv
->gpu_error
.stop_rings
= 0;
900 if (ret
== -ENODEV
) {
901 DRM_INFO("Reset not implemented, but ignoring "
902 "error for simulated gpu hangs\n");
907 if (i915_stop_ring_allow_warn(dev_priv
))
908 pr_notice("drm/i915: Resetting chip after gpu hang\n");
911 DRM_ERROR("Failed to reset chip: %i\n", ret
);
912 mutex_unlock(&dev
->struct_mutex
);
916 intel_overlay_reset(dev_priv
);
918 /* Ok, now get things going again... */
921 * Everything depends on having the GTT running, so we need to start
922 * there. Fortunately we don't need to do this unless we reset the
923 * chip at a PCI level.
925 * Next we need to restore the context, but we don't use those
928 * Ring buffer needs to be re-initialized in the KMS case, or if X
929 * was running at the time of the reset (i.e. we weren't VT
933 /* Used to prevent gem_check_wedged returning -EAGAIN during gpu reset */
934 dev_priv
->gpu_error
.reload_in_reset
= true;
936 ret
= i915_gem_init_hw(dev
);
938 dev_priv
->gpu_error
.reload_in_reset
= false;
940 mutex_unlock(&dev
->struct_mutex
);
942 DRM_ERROR("Failed hw init on reset %d\n", ret
);
947 * rps/rc6 re-init is necessary to restore state lost after the
948 * reset and the re-install of gt irqs. Skip for ironlake per
949 * previous concerns that it doesn't respond well to some forms
950 * of re-init after reset.
952 if (INTEL_INFO(dev
)->gen
> 5)
953 intel_enable_gt_powersave(dev
);
958 static int i915_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
960 struct intel_device_info
*intel_info
=
961 (struct intel_device_info
*) ent
->driver_data
;
963 if (IS_PRELIMINARY_HW(intel_info
) && !i915
.preliminary_hw_support
) {
964 DRM_INFO("This hardware requires preliminary hardware support.\n"
965 "See CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT, and/or modparam preliminary_hw_support\n");
969 /* Only bind to function 0 of the device. Early generations
970 * used function 1 as a placeholder for multi-head. This causes
971 * us confusion instead, especially on the systems where both
972 * functions have the same PCI-ID!
974 if (PCI_FUNC(pdev
->devfn
))
978 * apple-gmux is needed on dual GPU MacBook Pro
979 * to probe the panel if we're the inactive GPU.
981 if (IS_ENABLED(CONFIG_VGA_ARB
) && IS_ENABLED(CONFIG_VGA_SWITCHEROO
) &&
982 apple_gmux_present() && pdev
!= vga_default_device() &&
983 !vga_switcheroo_handler_flags())
984 return -EPROBE_DEFER
;
986 return drm_get_pci_dev(pdev
, ent
, &driver
);
990 i915_pci_remove(struct pci_dev
*pdev
)
992 struct drm_device
*dev
= pci_get_drvdata(pdev
);
997 static int i915_pm_suspend(struct device
*dev
)
999 struct pci_dev
*pdev
= to_pci_dev(dev
);
1000 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
1002 if (!drm_dev
|| !drm_dev
->dev_private
) {
1003 dev_err(dev
, "DRM not initialized, aborting suspend.\n");
1007 if (drm_dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
1010 return i915_drm_suspend(drm_dev
);
1013 static int i915_pm_suspend_late(struct device
*dev
)
1015 struct drm_device
*drm_dev
= dev_to_i915(dev
)->dev
;
1018 * We have a suspend ordering issue with the snd-hda driver also
1019 * requiring our device to be power up. Due to the lack of a
1020 * parent/child relationship we currently solve this with an late
1023 * FIXME: This should be solved with a special hdmi sink device or
1024 * similar so that power domains can be employed.
1026 if (drm_dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
1029 return i915_drm_suspend_late(drm_dev
, false);
1032 static int i915_pm_poweroff_late(struct device
*dev
)
1034 struct drm_device
*drm_dev
= dev_to_i915(dev
)->dev
;
1036 if (drm_dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
1039 return i915_drm_suspend_late(drm_dev
, true);
1042 static int i915_pm_resume_early(struct device
*dev
)
1044 struct drm_device
*drm_dev
= dev_to_i915(dev
)->dev
;
1046 if (drm_dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
1049 return i915_drm_resume_early(drm_dev
);
1052 static int i915_pm_resume(struct device
*dev
)
1054 struct drm_device
*drm_dev
= dev_to_i915(dev
)->dev
;
1056 if (drm_dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
1059 return i915_drm_resume(drm_dev
);
1062 static int hsw_suspend_complete(struct drm_i915_private
*dev_priv
)
1064 hsw_enable_pc8(dev_priv
);
1069 static int bxt_suspend_complete(struct drm_i915_private
*dev_priv
)
1071 struct drm_device
*dev
= dev_priv
->dev
;
1073 /* TODO: when DC5 support is added disable DC5 here. */
1075 broxton_ddi_phy_uninit(dev
);
1076 broxton_uninit_cdclk(dev
);
1077 bxt_enable_dc9(dev_priv
);
1082 static int bxt_resume_prepare(struct drm_i915_private
*dev_priv
)
1084 struct drm_device
*dev
= dev_priv
->dev
;
1086 /* TODO: when CSR FW support is added make sure the FW is loaded */
1088 bxt_disable_dc9(dev_priv
);
1091 * TODO: when DC5 support is added enable DC5 here if the CSR FW
1094 broxton_init_cdclk(dev
);
1095 broxton_ddi_phy_init(dev
);
1101 * Save all Gunit registers that may be lost after a D3 and a subsequent
1102 * S0i[R123] transition. The list of registers needing a save/restore is
1103 * defined in the VLV2_S0IXRegs document. This documents marks all Gunit
1104 * registers in the following way:
1105 * - Driver: saved/restored by the driver
1106 * - Punit : saved/restored by the Punit firmware
1107 * - No, w/o marking: no need to save/restore, since the register is R/O or
1108 * used internally by the HW in a way that doesn't depend
1109 * keeping the content across a suspend/resume.
1110 * - Debug : used for debugging
1112 * We save/restore all registers marked with 'Driver', with the following
1114 * - Registers out of use, including also registers marked with 'Debug'.
1115 * These have no effect on the driver's operation, so we don't save/restore
1116 * them to reduce the overhead.
1117 * - Registers that are fully setup by an initialization function called from
1118 * the resume path. For example many clock gating and RPS/RC6 registers.
1119 * - Registers that provide the right functionality with their reset defaults.
1121 * TODO: Except for registers that based on the above 3 criteria can be safely
1122 * ignored, we save/restore all others, practically treating the HW context as
1123 * a black-box for the driver. Further investigation is needed to reduce the
1124 * saved/restored registers even further, by following the same 3 criteria.
1126 static void vlv_save_gunit_s0ix_state(struct drm_i915_private
*dev_priv
)
1128 struct vlv_s0ix_state
*s
= &dev_priv
->vlv_s0ix_state
;
1131 /* GAM 0x4000-0x4770 */
1132 s
->wr_watermark
= I915_READ(GEN7_WR_WATERMARK
);
1133 s
->gfx_prio_ctrl
= I915_READ(GEN7_GFX_PRIO_CTRL
);
1134 s
->arb_mode
= I915_READ(ARB_MODE
);
1135 s
->gfx_pend_tlb0
= I915_READ(GEN7_GFX_PEND_TLB0
);
1136 s
->gfx_pend_tlb1
= I915_READ(GEN7_GFX_PEND_TLB1
);
1138 for (i
= 0; i
< ARRAY_SIZE(s
->lra_limits
); i
++)
1139 s
->lra_limits
[i
] = I915_READ(GEN7_LRA_LIMITS(i
));
1141 s
->media_max_req_count
= I915_READ(GEN7_MEDIA_MAX_REQ_COUNT
);
1142 s
->gfx_max_req_count
= I915_READ(GEN7_GFX_MAX_REQ_COUNT
);
1144 s
->render_hwsp
= I915_READ(RENDER_HWS_PGA_GEN7
);
1145 s
->ecochk
= I915_READ(GAM_ECOCHK
);
1146 s
->bsd_hwsp
= I915_READ(BSD_HWS_PGA_GEN7
);
1147 s
->blt_hwsp
= I915_READ(BLT_HWS_PGA_GEN7
);
1149 s
->tlb_rd_addr
= I915_READ(GEN7_TLB_RD_ADDR
);
1151 /* MBC 0x9024-0x91D0, 0x8500 */
1152 s
->g3dctl
= I915_READ(VLV_G3DCTL
);
1153 s
->gsckgctl
= I915_READ(VLV_GSCKGCTL
);
1154 s
->mbctl
= I915_READ(GEN6_MBCTL
);
1156 /* GCP 0x9400-0x9424, 0x8100-0x810C */
1157 s
->ucgctl1
= I915_READ(GEN6_UCGCTL1
);
1158 s
->ucgctl3
= I915_READ(GEN6_UCGCTL3
);
1159 s
->rcgctl1
= I915_READ(GEN6_RCGCTL1
);
1160 s
->rcgctl2
= I915_READ(GEN6_RCGCTL2
);
1161 s
->rstctl
= I915_READ(GEN6_RSTCTL
);
1162 s
->misccpctl
= I915_READ(GEN7_MISCCPCTL
);
1164 /* GPM 0xA000-0xAA84, 0x8000-0x80FC */
1165 s
->gfxpause
= I915_READ(GEN6_GFXPAUSE
);
1166 s
->rpdeuhwtc
= I915_READ(GEN6_RPDEUHWTC
);
1167 s
->rpdeuc
= I915_READ(GEN6_RPDEUC
);
1168 s
->ecobus
= I915_READ(ECOBUS
);
1169 s
->pwrdwnupctl
= I915_READ(VLV_PWRDWNUPCTL
);
1170 s
->rp_down_timeout
= I915_READ(GEN6_RP_DOWN_TIMEOUT
);
1171 s
->rp_deucsw
= I915_READ(GEN6_RPDEUCSW
);
1172 s
->rcubmabdtmr
= I915_READ(GEN6_RCUBMABDTMR
);
1173 s
->rcedata
= I915_READ(VLV_RCEDATA
);
1174 s
->spare2gh
= I915_READ(VLV_SPAREG2H
);
1176 /* Display CZ domain, 0x4400C-0x4402C, 0x4F000-0x4F11F */
1177 s
->gt_imr
= I915_READ(GTIMR
);
1178 s
->gt_ier
= I915_READ(GTIER
);
1179 s
->pm_imr
= I915_READ(GEN6_PMIMR
);
1180 s
->pm_ier
= I915_READ(GEN6_PMIER
);
1182 for (i
= 0; i
< ARRAY_SIZE(s
->gt_scratch
); i
++)
1183 s
->gt_scratch
[i
] = I915_READ(GEN7_GT_SCRATCH(i
));
1185 /* GT SA CZ domain, 0x100000-0x138124 */
1186 s
->tilectl
= I915_READ(TILECTL
);
1187 s
->gt_fifoctl
= I915_READ(GTFIFOCTL
);
1188 s
->gtlc_wake_ctrl
= I915_READ(VLV_GTLC_WAKE_CTRL
);
1189 s
->gtlc_survive
= I915_READ(VLV_GTLC_SURVIVABILITY_REG
);
1190 s
->pmwgicz
= I915_READ(VLV_PMWGICZ
);
1192 /* Gunit-Display CZ domain, 0x182028-0x1821CF */
1193 s
->gu_ctl0
= I915_READ(VLV_GU_CTL0
);
1194 s
->gu_ctl1
= I915_READ(VLV_GU_CTL1
);
1195 s
->pcbr
= I915_READ(VLV_PCBR
);
1196 s
->clock_gate_dis2
= I915_READ(VLV_GUNIT_CLOCK_GATE2
);
1199 * Not saving any of:
1200 * DFT, 0x9800-0x9EC0
1201 * SARB, 0xB000-0xB1FC
1202 * GAC, 0x5208-0x524C, 0x14000-0x14C000
1207 static void vlv_restore_gunit_s0ix_state(struct drm_i915_private
*dev_priv
)
1209 struct vlv_s0ix_state
*s
= &dev_priv
->vlv_s0ix_state
;
1213 /* GAM 0x4000-0x4770 */
1214 I915_WRITE(GEN7_WR_WATERMARK
, s
->wr_watermark
);
1215 I915_WRITE(GEN7_GFX_PRIO_CTRL
, s
->gfx_prio_ctrl
);
1216 I915_WRITE(ARB_MODE
, s
->arb_mode
| (0xffff << 16));
1217 I915_WRITE(GEN7_GFX_PEND_TLB0
, s
->gfx_pend_tlb0
);
1218 I915_WRITE(GEN7_GFX_PEND_TLB1
, s
->gfx_pend_tlb1
);
1220 for (i
= 0; i
< ARRAY_SIZE(s
->lra_limits
); i
++)
1221 I915_WRITE(GEN7_LRA_LIMITS(i
), s
->lra_limits
[i
]);
1223 I915_WRITE(GEN7_MEDIA_MAX_REQ_COUNT
, s
->media_max_req_count
);
1224 I915_WRITE(GEN7_GFX_MAX_REQ_COUNT
, s
->gfx_max_req_count
);
1226 I915_WRITE(RENDER_HWS_PGA_GEN7
, s
->render_hwsp
);
1227 I915_WRITE(GAM_ECOCHK
, s
->ecochk
);
1228 I915_WRITE(BSD_HWS_PGA_GEN7
, s
->bsd_hwsp
);
1229 I915_WRITE(BLT_HWS_PGA_GEN7
, s
->blt_hwsp
);
1231 I915_WRITE(GEN7_TLB_RD_ADDR
, s
->tlb_rd_addr
);
1233 /* MBC 0x9024-0x91D0, 0x8500 */
1234 I915_WRITE(VLV_G3DCTL
, s
->g3dctl
);
1235 I915_WRITE(VLV_GSCKGCTL
, s
->gsckgctl
);
1236 I915_WRITE(GEN6_MBCTL
, s
->mbctl
);
1238 /* GCP 0x9400-0x9424, 0x8100-0x810C */
1239 I915_WRITE(GEN6_UCGCTL1
, s
->ucgctl1
);
1240 I915_WRITE(GEN6_UCGCTL3
, s
->ucgctl3
);
1241 I915_WRITE(GEN6_RCGCTL1
, s
->rcgctl1
);
1242 I915_WRITE(GEN6_RCGCTL2
, s
->rcgctl2
);
1243 I915_WRITE(GEN6_RSTCTL
, s
->rstctl
);
1244 I915_WRITE(GEN7_MISCCPCTL
, s
->misccpctl
);
1246 /* GPM 0xA000-0xAA84, 0x8000-0x80FC */
1247 I915_WRITE(GEN6_GFXPAUSE
, s
->gfxpause
);
1248 I915_WRITE(GEN6_RPDEUHWTC
, s
->rpdeuhwtc
);
1249 I915_WRITE(GEN6_RPDEUC
, s
->rpdeuc
);
1250 I915_WRITE(ECOBUS
, s
->ecobus
);
1251 I915_WRITE(VLV_PWRDWNUPCTL
, s
->pwrdwnupctl
);
1252 I915_WRITE(GEN6_RP_DOWN_TIMEOUT
,s
->rp_down_timeout
);
1253 I915_WRITE(GEN6_RPDEUCSW
, s
->rp_deucsw
);
1254 I915_WRITE(GEN6_RCUBMABDTMR
, s
->rcubmabdtmr
);
1255 I915_WRITE(VLV_RCEDATA
, s
->rcedata
);
1256 I915_WRITE(VLV_SPAREG2H
, s
->spare2gh
);
1258 /* Display CZ domain, 0x4400C-0x4402C, 0x4F000-0x4F11F */
1259 I915_WRITE(GTIMR
, s
->gt_imr
);
1260 I915_WRITE(GTIER
, s
->gt_ier
);
1261 I915_WRITE(GEN6_PMIMR
, s
->pm_imr
);
1262 I915_WRITE(GEN6_PMIER
, s
->pm_ier
);
1264 for (i
= 0; i
< ARRAY_SIZE(s
->gt_scratch
); i
++)
1265 I915_WRITE(GEN7_GT_SCRATCH(i
), s
->gt_scratch
[i
]);
1267 /* GT SA CZ domain, 0x100000-0x138124 */
1268 I915_WRITE(TILECTL
, s
->tilectl
);
1269 I915_WRITE(GTFIFOCTL
, s
->gt_fifoctl
);
1271 * Preserve the GT allow wake and GFX force clock bit, they are not
1272 * be restored, as they are used to control the s0ix suspend/resume
1273 * sequence by the caller.
1275 val
= I915_READ(VLV_GTLC_WAKE_CTRL
);
1276 val
&= VLV_GTLC_ALLOWWAKEREQ
;
1277 val
|= s
->gtlc_wake_ctrl
& ~VLV_GTLC_ALLOWWAKEREQ
;
1278 I915_WRITE(VLV_GTLC_WAKE_CTRL
, val
);
1280 val
= I915_READ(VLV_GTLC_SURVIVABILITY_REG
);
1281 val
&= VLV_GFX_CLK_FORCE_ON_BIT
;
1282 val
|= s
->gtlc_survive
& ~VLV_GFX_CLK_FORCE_ON_BIT
;
1283 I915_WRITE(VLV_GTLC_SURVIVABILITY_REG
, val
);
1285 I915_WRITE(VLV_PMWGICZ
, s
->pmwgicz
);
1287 /* Gunit-Display CZ domain, 0x182028-0x1821CF */
1288 I915_WRITE(VLV_GU_CTL0
, s
->gu_ctl0
);
1289 I915_WRITE(VLV_GU_CTL1
, s
->gu_ctl1
);
1290 I915_WRITE(VLV_PCBR
, s
->pcbr
);
1291 I915_WRITE(VLV_GUNIT_CLOCK_GATE2
, s
->clock_gate_dis2
);
1294 int vlv_force_gfx_clock(struct drm_i915_private
*dev_priv
, bool force_on
)
1299 #define COND (I915_READ(VLV_GTLC_SURVIVABILITY_REG) & VLV_GFX_CLK_STATUS_BIT)
1301 val
= I915_READ(VLV_GTLC_SURVIVABILITY_REG
);
1302 val
&= ~VLV_GFX_CLK_FORCE_ON_BIT
;
1304 val
|= VLV_GFX_CLK_FORCE_ON_BIT
;
1305 I915_WRITE(VLV_GTLC_SURVIVABILITY_REG
, val
);
1310 err
= wait_for(COND
, 20);
1312 DRM_ERROR("timeout waiting for GFX clock force-on (%08x)\n",
1313 I915_READ(VLV_GTLC_SURVIVABILITY_REG
));
1319 static int vlv_allow_gt_wake(struct drm_i915_private
*dev_priv
, bool allow
)
1324 val
= I915_READ(VLV_GTLC_WAKE_CTRL
);
1325 val
&= ~VLV_GTLC_ALLOWWAKEREQ
;
1327 val
|= VLV_GTLC_ALLOWWAKEREQ
;
1328 I915_WRITE(VLV_GTLC_WAKE_CTRL
, val
);
1329 POSTING_READ(VLV_GTLC_WAKE_CTRL
);
1331 #define COND (!!(I915_READ(VLV_GTLC_PW_STATUS) & VLV_GTLC_ALLOWWAKEACK) == \
1333 err
= wait_for(COND
, 1);
1335 DRM_ERROR("timeout disabling GT waking\n");
1340 static int vlv_wait_for_gt_wells(struct drm_i915_private
*dev_priv
,
1347 mask
= VLV_GTLC_PW_MEDIA_STATUS_MASK
| VLV_GTLC_PW_RENDER_STATUS_MASK
;
1348 val
= wait_for_on
? mask
: 0;
1349 #define COND ((I915_READ(VLV_GTLC_PW_STATUS) & mask) == val)
1353 DRM_DEBUG_KMS("waiting for GT wells to go %s (%08x)\n",
1355 I915_READ(VLV_GTLC_PW_STATUS
));
1358 * RC6 transitioning can be delayed up to 2 msec (see
1359 * valleyview_enable_rps), use 3 msec for safety.
1361 err
= wait_for(COND
, 3);
1363 DRM_ERROR("timeout waiting for GT wells to go %s\n",
1364 onoff(wait_for_on
));
1370 static void vlv_check_no_gt_access(struct drm_i915_private
*dev_priv
)
1372 if (!(I915_READ(VLV_GTLC_PW_STATUS
) & VLV_GTLC_ALLOWWAKEERR
))
1375 DRM_DEBUG_DRIVER("GT register access while GT waking disabled\n");
1376 I915_WRITE(VLV_GTLC_PW_STATUS
, VLV_GTLC_ALLOWWAKEERR
);
1379 static int vlv_suspend_complete(struct drm_i915_private
*dev_priv
)
1385 * Bspec defines the following GT well on flags as debug only, so
1386 * don't treat them as hard failures.
1388 (void)vlv_wait_for_gt_wells(dev_priv
, false);
1390 mask
= VLV_GTLC_RENDER_CTX_EXISTS
| VLV_GTLC_MEDIA_CTX_EXISTS
;
1391 WARN_ON((I915_READ(VLV_GTLC_WAKE_CTRL
) & mask
) != mask
);
1393 vlv_check_no_gt_access(dev_priv
);
1395 err
= vlv_force_gfx_clock(dev_priv
, true);
1399 err
= vlv_allow_gt_wake(dev_priv
, false);
1403 if (!IS_CHERRYVIEW(dev_priv
))
1404 vlv_save_gunit_s0ix_state(dev_priv
);
1406 err
= vlv_force_gfx_clock(dev_priv
, false);
1413 /* For safety always re-enable waking and disable gfx clock forcing */
1414 vlv_allow_gt_wake(dev_priv
, true);
1416 vlv_force_gfx_clock(dev_priv
, false);
1421 static int vlv_resume_prepare(struct drm_i915_private
*dev_priv
,
1424 struct drm_device
*dev
= dev_priv
->dev
;
1429 * If any of the steps fail just try to continue, that's the best we
1430 * can do at this point. Return the first error code (which will also
1431 * leave RPM permanently disabled).
1433 ret
= vlv_force_gfx_clock(dev_priv
, true);
1435 if (!IS_CHERRYVIEW(dev_priv
))
1436 vlv_restore_gunit_s0ix_state(dev_priv
);
1438 err
= vlv_allow_gt_wake(dev_priv
, true);
1442 err
= vlv_force_gfx_clock(dev_priv
, false);
1446 vlv_check_no_gt_access(dev_priv
);
1449 intel_init_clock_gating(dev
);
1450 i915_gem_restore_fences(dev
);
1456 static int intel_runtime_suspend(struct device
*device
)
1458 struct pci_dev
*pdev
= to_pci_dev(device
);
1459 struct drm_device
*dev
= pci_get_drvdata(pdev
);
1460 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1463 if (WARN_ON_ONCE(!(dev_priv
->rps
.enabled
&& intel_enable_rc6(dev
))))
1466 if (WARN_ON_ONCE(!HAS_RUNTIME_PM(dev
)))
1469 DRM_DEBUG_KMS("Suspending device\n");
1472 * We could deadlock here in case another thread holding struct_mutex
1473 * calls RPM suspend concurrently, since the RPM suspend will wait
1474 * first for this RPM suspend to finish. In this case the concurrent
1475 * RPM resume will be followed by its RPM suspend counterpart. Still
1476 * for consistency return -EAGAIN, which will reschedule this suspend.
1478 if (!mutex_trylock(&dev
->struct_mutex
)) {
1479 DRM_DEBUG_KMS("device lock contention, deffering suspend\n");
1481 * Bump the expiration timestamp, otherwise the suspend won't
1484 pm_runtime_mark_last_busy(device
);
1489 disable_rpm_wakeref_asserts(dev_priv
);
1492 * We are safe here against re-faults, since the fault handler takes
1495 i915_gem_release_all_mmaps(dev_priv
);
1496 mutex_unlock(&dev
->struct_mutex
);
1498 cancel_delayed_work_sync(&dev_priv
->gpu_error
.hangcheck_work
);
1500 intel_guc_suspend(dev
);
1502 intel_suspend_gt_powersave(dev
);
1503 intel_runtime_pm_disable_interrupts(dev_priv
);
1505 ret
= intel_suspend_complete(dev_priv
);
1507 DRM_ERROR("Runtime suspend failed, disabling it (%d)\n", ret
);
1508 intel_runtime_pm_enable_interrupts(dev_priv
);
1510 enable_rpm_wakeref_asserts(dev_priv
);
1515 intel_uncore_forcewake_reset(dev
, false);
1517 enable_rpm_wakeref_asserts(dev_priv
);
1518 WARN_ON_ONCE(atomic_read(&dev_priv
->pm
.wakeref_count
));
1520 if (intel_uncore_arm_unclaimed_mmio_detection(dev_priv
))
1521 DRM_ERROR("Unclaimed access detected prior to suspending\n");
1523 dev_priv
->pm
.suspended
= true;
1526 * FIXME: We really should find a document that references the arguments
1529 if (IS_BROADWELL(dev
)) {
1531 * On Broadwell, if we use PCI_D1 the PCH DDI ports will stop
1532 * being detected, and the call we do at intel_runtime_resume()
1533 * won't be able to restore them. Since PCI_D3hot matches the
1534 * actual specification and appears to be working, use it.
1536 intel_opregion_notify_adapter(dev
, PCI_D3hot
);
1539 * current versions of firmware which depend on this opregion
1540 * notification have repurposed the D1 definition to mean
1541 * "runtime suspended" vs. what you would normally expect (D3)
1542 * to distinguish it from notifications that might be sent via
1545 intel_opregion_notify_adapter(dev
, PCI_D1
);
1548 assert_forcewakes_inactive(dev_priv
);
1550 DRM_DEBUG_KMS("Device suspended\n");
1554 static int intel_runtime_resume(struct device
*device
)
1556 struct pci_dev
*pdev
= to_pci_dev(device
);
1557 struct drm_device
*dev
= pci_get_drvdata(pdev
);
1558 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1561 if (WARN_ON_ONCE(!HAS_RUNTIME_PM(dev
)))
1564 DRM_DEBUG_KMS("Resuming device\n");
1566 WARN_ON_ONCE(atomic_read(&dev_priv
->pm
.wakeref_count
));
1567 disable_rpm_wakeref_asserts(dev_priv
);
1569 intel_opregion_notify_adapter(dev
, PCI_D0
);
1570 dev_priv
->pm
.suspended
= false;
1571 if (intel_uncore_unclaimed_mmio(dev_priv
))
1572 DRM_DEBUG_DRIVER("Unclaimed access during suspend, bios?\n");
1574 intel_guc_resume(dev
);
1576 if (IS_GEN6(dev_priv
))
1577 intel_init_pch_refclk(dev
);
1579 if (IS_BROXTON(dev
))
1580 ret
= bxt_resume_prepare(dev_priv
);
1581 else if (IS_HASWELL(dev_priv
) || IS_BROADWELL(dev_priv
))
1582 hsw_disable_pc8(dev_priv
);
1583 else if (IS_VALLEYVIEW(dev_priv
) || IS_CHERRYVIEW(dev_priv
))
1584 ret
= vlv_resume_prepare(dev_priv
, true);
1587 * No point of rolling back things in case of an error, as the best
1588 * we can do is to hope that things will still work (and disable RPM).
1590 i915_gem_init_swizzling(dev
);
1591 gen6_update_ring_freq(dev
);
1593 intel_runtime_pm_enable_interrupts(dev_priv
);
1596 * On VLV/CHV display interrupts are part of the display
1597 * power well, so hpd is reinitialized from there. For
1598 * everyone else do it here.
1600 if (!IS_VALLEYVIEW(dev_priv
) && !IS_CHERRYVIEW(dev_priv
))
1601 intel_hpd_init(dev_priv
);
1603 intel_enable_gt_powersave(dev
);
1605 enable_rpm_wakeref_asserts(dev_priv
);
1608 DRM_ERROR("Runtime resume failed, disabling it (%d)\n", ret
);
1610 DRM_DEBUG_KMS("Device resumed\n");
1616 * This function implements common functionality of runtime and system
1619 static int intel_suspend_complete(struct drm_i915_private
*dev_priv
)
1623 if (IS_BROXTON(dev_priv
))
1624 ret
= bxt_suspend_complete(dev_priv
);
1625 else if (IS_HASWELL(dev_priv
) || IS_BROADWELL(dev_priv
))
1626 ret
= hsw_suspend_complete(dev_priv
);
1627 else if (IS_VALLEYVIEW(dev_priv
) || IS_CHERRYVIEW(dev_priv
))
1628 ret
= vlv_suspend_complete(dev_priv
);
1635 static const struct dev_pm_ops i915_pm_ops
= {
1637 * S0ix (via system suspend) and S3 event handlers [PMSG_SUSPEND,
1640 .suspend
= i915_pm_suspend
,
1641 .suspend_late
= i915_pm_suspend_late
,
1642 .resume_early
= i915_pm_resume_early
,
1643 .resume
= i915_pm_resume
,
1647 * @freeze, @freeze_late : called (1) before creating the
1648 * hibernation image [PMSG_FREEZE] and
1649 * (2) after rebooting, before restoring
1650 * the image [PMSG_QUIESCE]
1651 * @thaw, @thaw_early : called (1) after creating the hibernation
1652 * image, before writing it [PMSG_THAW]
1653 * and (2) after failing to create or
1654 * restore the image [PMSG_RECOVER]
1655 * @poweroff, @poweroff_late: called after writing the hibernation
1656 * image, before rebooting [PMSG_HIBERNATE]
1657 * @restore, @restore_early : called after rebooting and restoring the
1658 * hibernation image [PMSG_RESTORE]
1660 .freeze
= i915_pm_suspend
,
1661 .freeze_late
= i915_pm_suspend_late
,
1662 .thaw_early
= i915_pm_resume_early
,
1663 .thaw
= i915_pm_resume
,
1664 .poweroff
= i915_pm_suspend
,
1665 .poweroff_late
= i915_pm_poweroff_late
,
1666 .restore_early
= i915_pm_resume_early
,
1667 .restore
= i915_pm_resume
,
1669 /* S0ix (via runtime suspend) event handlers */
1670 .runtime_suspend
= intel_runtime_suspend
,
1671 .runtime_resume
= intel_runtime_resume
,
1674 static const struct vm_operations_struct i915_gem_vm_ops
= {
1675 .fault
= i915_gem_fault
,
1676 .open
= drm_gem_vm_open
,
1677 .close
= drm_gem_vm_close
,
1680 static const struct file_operations i915_driver_fops
= {
1681 .owner
= THIS_MODULE
,
1683 .release
= drm_release
,
1684 .unlocked_ioctl
= drm_ioctl
,
1685 .mmap
= drm_gem_mmap
,
1688 #ifdef CONFIG_COMPAT
1689 .compat_ioctl
= i915_compat_ioctl
,
1691 .llseek
= noop_llseek
,
1694 static struct drm_driver driver
= {
1695 /* Don't use MTRRs here; the Xserver or userspace app should
1696 * deal with them for Intel hardware.
1699 DRIVER_HAVE_IRQ
| DRIVER_IRQ_SHARED
| DRIVER_GEM
| DRIVER_PRIME
|
1700 DRIVER_RENDER
| DRIVER_MODESET
,
1701 .load
= i915_driver_load
,
1702 .unload
= i915_driver_unload
,
1703 .open
= i915_driver_open
,
1704 .lastclose
= i915_driver_lastclose
,
1705 .preclose
= i915_driver_preclose
,
1706 .postclose
= i915_driver_postclose
,
1707 .set_busid
= drm_pci_set_busid
,
1709 #if defined(CONFIG_DEBUG_FS)
1710 .debugfs_init
= i915_debugfs_init
,
1711 .debugfs_cleanup
= i915_debugfs_cleanup
,
1713 .gem_free_object
= i915_gem_free_object
,
1714 .gem_vm_ops
= &i915_gem_vm_ops
,
1716 .prime_handle_to_fd
= drm_gem_prime_handle_to_fd
,
1717 .prime_fd_to_handle
= drm_gem_prime_fd_to_handle
,
1718 .gem_prime_export
= i915_gem_prime_export
,
1719 .gem_prime_import
= i915_gem_prime_import
,
1721 .dumb_create
= i915_gem_dumb_create
,
1722 .dumb_map_offset
= i915_gem_mmap_gtt
,
1723 .dumb_destroy
= drm_gem_dumb_destroy
,
1724 .ioctls
= i915_ioctls
,
1725 .fops
= &i915_driver_fops
,
1726 .name
= DRIVER_NAME
,
1727 .desc
= DRIVER_DESC
,
1728 .date
= DRIVER_DATE
,
1729 .major
= DRIVER_MAJOR
,
1730 .minor
= DRIVER_MINOR
,
1731 .patchlevel
= DRIVER_PATCHLEVEL
,
1734 static struct pci_driver i915_pci_driver
= {
1735 .name
= DRIVER_NAME
,
1736 .id_table
= pciidlist
,
1737 .probe
= i915_pci_probe
,
1738 .remove
= i915_pci_remove
,
1739 .driver
.pm
= &i915_pm_ops
,
1742 static int __init
i915_init(void)
1744 driver
.num_ioctls
= i915_max_ioctl
;
1747 * Enable KMS by default, unless explicitly overriden by
1748 * either the i915.modeset prarameter or by the
1749 * vga_text_mode_force boot option.
1752 if (i915
.modeset
== 0)
1753 driver
.driver_features
&= ~DRIVER_MODESET
;
1755 if (vgacon_text_force() && i915
.modeset
== -1)
1756 driver
.driver_features
&= ~DRIVER_MODESET
;
1758 if (!(driver
.driver_features
& DRIVER_MODESET
)) {
1759 /* Silently fail loading to not upset userspace. */
1760 DRM_DEBUG_DRIVER("KMS and UMS disabled.\n");
1764 if (i915
.nuclear_pageflip
)
1765 driver
.driver_features
|= DRIVER_ATOMIC
;
1767 return drm_pci_init(&driver
, &i915_pci_driver
);
1770 static void __exit
i915_exit(void)
1772 if (!(driver
.driver_features
& DRIVER_MODESET
))
1773 return; /* Never loaded a driver. */
1775 drm_pci_exit(&driver
, &i915_pci_driver
);
1778 module_init(i915_init
);
1779 module_exit(i915_exit
);
1781 MODULE_AUTHOR("Tungsten Graphics, Inc.");
1782 MODULE_AUTHOR("Intel Corporation");
1784 MODULE_DESCRIPTION(DRIVER_DESC
);
1785 MODULE_LICENSE("GPL and additional rights");