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>
32 #include <drm/i915_drm.h>
34 #include "i915_trace.h"
35 #include "intel_drv.h"
37 #include <linux/console.h>
38 #include <linux/module.h>
39 #include <linux/pm_runtime.h>
40 #include <drm/drm_crtc_helper.h>
42 static struct drm_driver driver
;
44 #define GEN_DEFAULT_PIPEOFFSETS \
45 .pipe_offsets = { PIPE_A_OFFSET, PIPE_B_OFFSET, \
46 PIPE_C_OFFSET, PIPE_EDP_OFFSET }, \
47 .trans_offsets = { TRANSCODER_A_OFFSET, TRANSCODER_B_OFFSET, \
48 TRANSCODER_C_OFFSET, TRANSCODER_EDP_OFFSET }, \
49 .dpll_offsets = { DPLL_A_OFFSET, DPLL_B_OFFSET }, \
50 .dpll_md_offsets = { DPLL_A_MD_OFFSET, DPLL_B_MD_OFFSET }, \
51 .palette_offsets = { PALETTE_A_OFFSET, PALETTE_B_OFFSET }
53 #define GEN_CHV_PIPEOFFSETS \
54 .pipe_offsets = { PIPE_A_OFFSET, PIPE_B_OFFSET, \
55 CHV_PIPE_C_OFFSET }, \
56 .trans_offsets = { TRANSCODER_A_OFFSET, TRANSCODER_B_OFFSET, \
57 CHV_TRANSCODER_C_OFFSET, }, \
58 .dpll_offsets = { DPLL_A_OFFSET, DPLL_B_OFFSET, \
59 CHV_DPLL_C_OFFSET }, \
60 .dpll_md_offsets = { DPLL_A_MD_OFFSET, DPLL_B_MD_OFFSET, \
61 CHV_DPLL_C_MD_OFFSET }, \
62 .palette_offsets = { PALETTE_A_OFFSET, PALETTE_B_OFFSET, \
63 CHV_PALETTE_C_OFFSET }
65 #define CURSOR_OFFSETS \
66 .cursor_offsets = { CURSOR_A_OFFSET, CURSOR_B_OFFSET, CHV_CURSOR_C_OFFSET }
68 #define IVB_CURSOR_OFFSETS \
69 .cursor_offsets = { CURSOR_A_OFFSET, IVB_CURSOR_B_OFFSET, IVB_CURSOR_C_OFFSET }
71 static const struct intel_device_info intel_i830_info
= {
72 .gen
= 2, .is_mobile
= 1, .cursor_needs_physical
= 1, .num_pipes
= 2,
73 .has_overlay
= 1, .overlay_needs_physical
= 1,
74 .ring_mask
= RENDER_RING
,
75 GEN_DEFAULT_PIPEOFFSETS
,
79 static const struct intel_device_info intel_845g_info
= {
80 .gen
= 2, .num_pipes
= 1,
81 .has_overlay
= 1, .overlay_needs_physical
= 1,
82 .ring_mask
= RENDER_RING
,
83 GEN_DEFAULT_PIPEOFFSETS
,
87 static const struct intel_device_info intel_i85x_info
= {
88 .gen
= 2, .is_i85x
= 1, .is_mobile
= 1, .num_pipes
= 2,
89 .cursor_needs_physical
= 1,
90 .has_overlay
= 1, .overlay_needs_physical
= 1,
92 .ring_mask
= RENDER_RING
,
93 GEN_DEFAULT_PIPEOFFSETS
,
97 static const struct intel_device_info intel_i865g_info
= {
98 .gen
= 2, .num_pipes
= 1,
99 .has_overlay
= 1, .overlay_needs_physical
= 1,
100 .ring_mask
= RENDER_RING
,
101 GEN_DEFAULT_PIPEOFFSETS
,
105 static const struct intel_device_info intel_i915g_info
= {
106 .gen
= 3, .is_i915g
= 1, .cursor_needs_physical
= 1, .num_pipes
= 2,
107 .has_overlay
= 1, .overlay_needs_physical
= 1,
108 .ring_mask
= RENDER_RING
,
109 GEN_DEFAULT_PIPEOFFSETS
,
112 static const struct intel_device_info intel_i915gm_info
= {
113 .gen
= 3, .is_mobile
= 1, .num_pipes
= 2,
114 .cursor_needs_physical
= 1,
115 .has_overlay
= 1, .overlay_needs_physical
= 1,
118 .ring_mask
= RENDER_RING
,
119 GEN_DEFAULT_PIPEOFFSETS
,
122 static const struct intel_device_info intel_i945g_info
= {
123 .gen
= 3, .has_hotplug
= 1, .cursor_needs_physical
= 1, .num_pipes
= 2,
124 .has_overlay
= 1, .overlay_needs_physical
= 1,
125 .ring_mask
= RENDER_RING
,
126 GEN_DEFAULT_PIPEOFFSETS
,
129 static const struct intel_device_info intel_i945gm_info
= {
130 .gen
= 3, .is_i945gm
= 1, .is_mobile
= 1, .num_pipes
= 2,
131 .has_hotplug
= 1, .cursor_needs_physical
= 1,
132 .has_overlay
= 1, .overlay_needs_physical
= 1,
135 .ring_mask
= RENDER_RING
,
136 GEN_DEFAULT_PIPEOFFSETS
,
140 static const struct intel_device_info intel_i965g_info
= {
141 .gen
= 4, .is_broadwater
= 1, .num_pipes
= 2,
144 .ring_mask
= RENDER_RING
,
145 GEN_DEFAULT_PIPEOFFSETS
,
149 static const struct intel_device_info intel_i965gm_info
= {
150 .gen
= 4, .is_crestline
= 1, .num_pipes
= 2,
151 .is_mobile
= 1, .has_fbc
= 1, .has_hotplug
= 1,
154 .ring_mask
= RENDER_RING
,
155 GEN_DEFAULT_PIPEOFFSETS
,
159 static const struct intel_device_info intel_g33_info
= {
160 .gen
= 3, .is_g33
= 1, .num_pipes
= 2,
161 .need_gfx_hws
= 1, .has_hotplug
= 1,
163 .ring_mask
= RENDER_RING
,
164 GEN_DEFAULT_PIPEOFFSETS
,
168 static const struct intel_device_info intel_g45_info
= {
169 .gen
= 4, .is_g4x
= 1, .need_gfx_hws
= 1, .num_pipes
= 2,
170 .has_pipe_cxsr
= 1, .has_hotplug
= 1,
171 .ring_mask
= RENDER_RING
| BSD_RING
,
172 GEN_DEFAULT_PIPEOFFSETS
,
176 static const struct intel_device_info intel_gm45_info
= {
177 .gen
= 4, .is_g4x
= 1, .num_pipes
= 2,
178 .is_mobile
= 1, .need_gfx_hws
= 1, .has_fbc
= 1,
179 .has_pipe_cxsr
= 1, .has_hotplug
= 1,
181 .ring_mask
= RENDER_RING
| BSD_RING
,
182 GEN_DEFAULT_PIPEOFFSETS
,
186 static const struct intel_device_info intel_pineview_info
= {
187 .gen
= 3, .is_g33
= 1, .is_pineview
= 1, .is_mobile
= 1, .num_pipes
= 2,
188 .need_gfx_hws
= 1, .has_hotplug
= 1,
190 GEN_DEFAULT_PIPEOFFSETS
,
194 static const struct intel_device_info intel_ironlake_d_info
= {
195 .gen
= 5, .num_pipes
= 2,
196 .need_gfx_hws
= 1, .has_hotplug
= 1,
197 .ring_mask
= RENDER_RING
| BSD_RING
,
198 GEN_DEFAULT_PIPEOFFSETS
,
202 static const struct intel_device_info intel_ironlake_m_info
= {
203 .gen
= 5, .is_mobile
= 1, .num_pipes
= 2,
204 .need_gfx_hws
= 1, .has_hotplug
= 1,
206 .ring_mask
= RENDER_RING
| BSD_RING
,
207 GEN_DEFAULT_PIPEOFFSETS
,
211 static const struct intel_device_info intel_sandybridge_d_info
= {
212 .gen
= 6, .num_pipes
= 2,
213 .need_gfx_hws
= 1, .has_hotplug
= 1,
215 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
,
217 GEN_DEFAULT_PIPEOFFSETS
,
221 static const struct intel_device_info intel_sandybridge_m_info
= {
222 .gen
= 6, .is_mobile
= 1, .num_pipes
= 2,
223 .need_gfx_hws
= 1, .has_hotplug
= 1,
225 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
,
227 GEN_DEFAULT_PIPEOFFSETS
,
231 #define GEN7_FEATURES \
232 .gen = 7, .num_pipes = 3, \
233 .need_gfx_hws = 1, .has_hotplug = 1, \
235 .ring_mask = RENDER_RING | BSD_RING | BLT_RING, \
238 static const struct intel_device_info intel_ivybridge_d_info
= {
241 GEN_DEFAULT_PIPEOFFSETS
,
245 static const struct intel_device_info intel_ivybridge_m_info
= {
249 GEN_DEFAULT_PIPEOFFSETS
,
253 static const struct intel_device_info intel_ivybridge_q_info
= {
256 .num_pipes
= 0, /* legal, last one wins */
257 GEN_DEFAULT_PIPEOFFSETS
,
261 static const struct intel_device_info intel_valleyview_m_info
= {
266 .display_mmio_offset
= VLV_DISPLAY_BASE
,
267 .has_fbc
= 0, /* legal, last one wins */
268 .has_llc
= 0, /* legal, last one wins */
269 GEN_DEFAULT_PIPEOFFSETS
,
273 static const struct intel_device_info intel_valleyview_d_info
= {
277 .display_mmio_offset
= VLV_DISPLAY_BASE
,
278 .has_fbc
= 0, /* legal, last one wins */
279 .has_llc
= 0, /* legal, last one wins */
280 GEN_DEFAULT_PIPEOFFSETS
,
284 static const struct intel_device_info intel_haswell_d_info
= {
289 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
| VEBOX_RING
,
290 GEN_DEFAULT_PIPEOFFSETS
,
294 static const struct intel_device_info intel_haswell_m_info
= {
300 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
| VEBOX_RING
,
301 GEN_DEFAULT_PIPEOFFSETS
,
305 static const struct intel_device_info intel_broadwell_d_info
= {
306 .gen
= 8, .num_pipes
= 3,
307 .need_gfx_hws
= 1, .has_hotplug
= 1,
308 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
| VEBOX_RING
,
312 GEN_DEFAULT_PIPEOFFSETS
,
316 static const struct intel_device_info intel_broadwell_m_info
= {
317 .gen
= 8, .is_mobile
= 1, .num_pipes
= 3,
318 .need_gfx_hws
= 1, .has_hotplug
= 1,
319 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
| VEBOX_RING
,
323 GEN_DEFAULT_PIPEOFFSETS
,
326 static const struct intel_device_info intel_broadwell_gt3d_info
= {
327 .gen
= 8, .num_pipes
= 3,
328 .need_gfx_hws
= 1, .has_hotplug
= 1,
329 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
| VEBOX_RING
| BSD2_RING
,
333 GEN_DEFAULT_PIPEOFFSETS
,
336 static const struct intel_device_info intel_broadwell_gt3m_info
= {
337 .gen
= 8, .is_mobile
= 1, .num_pipes
= 3,
338 .need_gfx_hws
= 1, .has_hotplug
= 1,
339 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
| VEBOX_RING
| BSD2_RING
,
343 GEN_DEFAULT_PIPEOFFSETS
,
347 static const struct intel_device_info intel_cherryview_info
= {
349 .gen
= 8, .num_pipes
= 3,
350 .need_gfx_hws
= 1, .has_hotplug
= 1,
351 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
| VEBOX_RING
,
353 .display_mmio_offset
= VLV_DISPLAY_BASE
,
359 * Make sure any device matches here are from most specific to most
360 * general. For example, since the Quanta match is based on the subsystem
361 * and subvendor IDs, we need it to come before the more general IVB
362 * PCI ID matches, otherwise we'll use the wrong info struct above.
364 #define INTEL_PCI_IDS \
365 INTEL_I830_IDS(&intel_i830_info), \
366 INTEL_I845G_IDS(&intel_845g_info), \
367 INTEL_I85X_IDS(&intel_i85x_info), \
368 INTEL_I865G_IDS(&intel_i865g_info), \
369 INTEL_I915G_IDS(&intel_i915g_info), \
370 INTEL_I915GM_IDS(&intel_i915gm_info), \
371 INTEL_I945G_IDS(&intel_i945g_info), \
372 INTEL_I945GM_IDS(&intel_i945gm_info), \
373 INTEL_I965G_IDS(&intel_i965g_info), \
374 INTEL_G33_IDS(&intel_g33_info), \
375 INTEL_I965GM_IDS(&intel_i965gm_info), \
376 INTEL_GM45_IDS(&intel_gm45_info), \
377 INTEL_G45_IDS(&intel_g45_info), \
378 INTEL_PINEVIEW_IDS(&intel_pineview_info), \
379 INTEL_IRONLAKE_D_IDS(&intel_ironlake_d_info), \
380 INTEL_IRONLAKE_M_IDS(&intel_ironlake_m_info), \
381 INTEL_SNB_D_IDS(&intel_sandybridge_d_info), \
382 INTEL_SNB_M_IDS(&intel_sandybridge_m_info), \
383 INTEL_IVB_Q_IDS(&intel_ivybridge_q_info), /* must be first IVB */ \
384 INTEL_IVB_M_IDS(&intel_ivybridge_m_info), \
385 INTEL_IVB_D_IDS(&intel_ivybridge_d_info), \
386 INTEL_HSW_D_IDS(&intel_haswell_d_info), \
387 INTEL_HSW_M_IDS(&intel_haswell_m_info), \
388 INTEL_VLV_M_IDS(&intel_valleyview_m_info), \
389 INTEL_VLV_D_IDS(&intel_valleyview_d_info), \
390 INTEL_BDW_GT12M_IDS(&intel_broadwell_m_info), \
391 INTEL_BDW_GT12D_IDS(&intel_broadwell_d_info), \
392 INTEL_BDW_GT3M_IDS(&intel_broadwell_gt3m_info), \
393 INTEL_BDW_GT3D_IDS(&intel_broadwell_gt3d_info), \
394 INTEL_CHV_IDS(&intel_cherryview_info)
396 static const struct pci_device_id pciidlist
[] = { /* aka */
401 #if defined(CONFIG_DRM_I915_KMS)
402 MODULE_DEVICE_TABLE(pci
, pciidlist
);
405 void intel_detect_pch(struct drm_device
*dev
)
407 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
408 struct pci_dev
*pch
= NULL
;
410 /* In all current cases, num_pipes is equivalent to the PCH_NOP setting
411 * (which really amounts to a PCH but no South Display).
413 if (INTEL_INFO(dev
)->num_pipes
== 0) {
414 dev_priv
->pch_type
= PCH_NOP
;
419 * The reason to probe ISA bridge instead of Dev31:Fun0 is to
420 * make graphics device passthrough work easy for VMM, that only
421 * need to expose ISA bridge to let driver know the real hardware
422 * underneath. This is a requirement from virtualization team.
424 * In some virtualized environments (e.g. XEN), there is irrelevant
425 * ISA bridge in the system. To work reliably, we should scan trhough
426 * all the ISA bridge devices and check for the first match, instead
427 * of only checking the first one.
429 while ((pch
= pci_get_class(PCI_CLASS_BRIDGE_ISA
<< 8, pch
))) {
430 if (pch
->vendor
== PCI_VENDOR_ID_INTEL
) {
431 unsigned short id
= pch
->device
& INTEL_PCH_DEVICE_ID_MASK
;
432 dev_priv
->pch_id
= id
;
434 if (id
== INTEL_PCH_IBX_DEVICE_ID_TYPE
) {
435 dev_priv
->pch_type
= PCH_IBX
;
436 DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
437 WARN_ON(!IS_GEN5(dev
));
438 } else if (id
== INTEL_PCH_CPT_DEVICE_ID_TYPE
) {
439 dev_priv
->pch_type
= PCH_CPT
;
440 DRM_DEBUG_KMS("Found CougarPoint PCH\n");
441 WARN_ON(!(IS_GEN6(dev
) || IS_IVYBRIDGE(dev
)));
442 } else if (id
== INTEL_PCH_PPT_DEVICE_ID_TYPE
) {
443 /* PantherPoint is CPT compatible */
444 dev_priv
->pch_type
= PCH_CPT
;
445 DRM_DEBUG_KMS("Found PantherPoint PCH\n");
446 WARN_ON(!(IS_GEN6(dev
) || IS_IVYBRIDGE(dev
)));
447 } else if (id
== INTEL_PCH_LPT_DEVICE_ID_TYPE
) {
448 dev_priv
->pch_type
= PCH_LPT
;
449 DRM_DEBUG_KMS("Found LynxPoint PCH\n");
450 WARN_ON(!IS_HASWELL(dev
));
451 WARN_ON(IS_ULT(dev
));
452 } else if (IS_BROADWELL(dev
)) {
453 dev_priv
->pch_type
= PCH_LPT
;
455 INTEL_PCH_LPT_LP_DEVICE_ID_TYPE
;
456 DRM_DEBUG_KMS("This is Broadwell, assuming "
457 "LynxPoint LP PCH\n");
458 } else if (id
== INTEL_PCH_LPT_LP_DEVICE_ID_TYPE
) {
459 dev_priv
->pch_type
= PCH_LPT
;
460 DRM_DEBUG_KMS("Found LynxPoint LP PCH\n");
461 WARN_ON(!IS_HASWELL(dev
));
462 WARN_ON(!IS_ULT(dev
));
470 DRM_DEBUG_KMS("No PCH found.\n");
475 bool i915_semaphore_is_enabled(struct drm_device
*dev
)
477 if (INTEL_INFO(dev
)->gen
< 6)
480 if (i915
.semaphores
>= 0)
481 return i915
.semaphores
;
483 /* Until we get further testing... */
487 #ifdef CONFIG_INTEL_IOMMU
488 /* Enable semaphores on SNB when IO remapping is off */
489 if (INTEL_INFO(dev
)->gen
== 6 && intel_iommu_gfx_mapped
)
496 static int i915_drm_freeze(struct drm_device
*dev
)
498 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
499 struct drm_crtc
*crtc
;
501 intel_runtime_pm_get(dev_priv
);
503 /* ignore lid events during suspend */
504 mutex_lock(&dev_priv
->modeset_restore_lock
);
505 dev_priv
->modeset_restore
= MODESET_SUSPENDED
;
506 mutex_unlock(&dev_priv
->modeset_restore_lock
);
508 /* We do a lot of poking in a lot of registers, make sure they work
510 intel_display_set_init_power(dev_priv
, true);
512 drm_kms_helper_poll_disable(dev
);
514 pci_save_state(dev
->pdev
);
516 /* If KMS is active, we do the leavevt stuff here */
517 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
520 error
= i915_gem_suspend(dev
);
522 dev_err(&dev
->pdev
->dev
,
523 "GEM idle failed, resume might fail\n");
527 drm_irq_uninstall(dev
);
528 dev_priv
->enable_hotplug_processing
= false;
530 intel_disable_gt_powersave(dev
);
533 * Disable CRTCs directly since we want to preserve sw state
536 drm_modeset_lock_all(dev
);
537 for_each_crtc(dev
, crtc
) {
538 dev_priv
->display
.crtc_disable(crtc
);
540 drm_modeset_unlock_all(dev
);
542 intel_modeset_suspend_hw(dev
);
545 i915_gem_suspend_gtt_mappings(dev
);
547 i915_save_state(dev
);
549 intel_opregion_fini(dev
);
550 intel_uncore_fini(dev
);
553 intel_fbdev_set_suspend(dev
, FBINFO_STATE_SUSPENDED
);
556 dev_priv
->suspend_count
++;
561 int i915_suspend(struct drm_device
*dev
, pm_message_t state
)
565 if (!dev
|| !dev
->dev_private
) {
566 DRM_ERROR("dev: %p\n", dev
);
567 DRM_ERROR("DRM not initialized, aborting suspend.\n");
571 if (state
.event
== PM_EVENT_PRETHAW
)
575 if (dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
578 error
= i915_drm_freeze(dev
);
582 if (state
.event
== PM_EVENT_SUSPEND
) {
583 /* Shut down the device */
584 pci_disable_device(dev
->pdev
);
585 pci_set_power_state(dev
->pdev
, PCI_D3hot
);
591 void intel_console_resume(struct work_struct
*work
)
593 struct drm_i915_private
*dev_priv
=
594 container_of(work
, struct drm_i915_private
,
595 console_resume_work
);
596 struct drm_device
*dev
= dev_priv
->dev
;
599 intel_fbdev_set_suspend(dev
, FBINFO_STATE_RUNNING
);
603 static int i915_drm_thaw_early(struct drm_device
*dev
)
605 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
607 intel_uncore_early_sanitize(dev
);
608 intel_uncore_sanitize(dev
);
609 intel_power_domains_init_hw(dev_priv
);
614 static int __i915_drm_thaw(struct drm_device
*dev
, bool restore_gtt_mappings
)
616 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
618 if (drm_core_check_feature(dev
, DRIVER_MODESET
) &&
619 restore_gtt_mappings
) {
620 mutex_lock(&dev
->struct_mutex
);
621 i915_gem_restore_gtt_mappings(dev
);
622 mutex_unlock(&dev
->struct_mutex
);
625 i915_restore_state(dev
);
626 intel_opregion_setup(dev
);
628 /* KMS EnterVT equivalent */
629 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
630 intel_init_pch_refclk(dev
);
631 drm_mode_config_reset(dev
);
633 mutex_lock(&dev
->struct_mutex
);
634 if (i915_gem_init_hw(dev
)) {
635 DRM_ERROR("failed to re-initialize GPU, declaring wedged!\n");
636 atomic_set_mask(I915_WEDGED
, &dev_priv
->gpu_error
.reset_counter
);
638 mutex_unlock(&dev
->struct_mutex
);
640 /* We need working interrupts for modeset enabling ... */
641 drm_irq_install(dev
, dev
->pdev
->irq
);
643 intel_modeset_init_hw(dev
);
645 drm_modeset_lock_all(dev
);
646 intel_modeset_setup_hw_state(dev
, true);
647 drm_modeset_unlock_all(dev
);
650 * ... but also need to make sure that hotplug processing
651 * doesn't cause havoc. Like in the driver load code we don't
652 * bother with the tiny race here where we might loose hotplug
656 dev_priv
->enable_hotplug_processing
= true;
657 /* Config may have changed between suspend and resume */
658 drm_helper_hpd_irq_event(dev
);
661 intel_opregion_init(dev
);
664 * The console lock can be pretty contented on resume due
665 * to all the printk activity. Try to keep it out of the hot
666 * path of resume if possible.
668 if (console_trylock()) {
669 intel_fbdev_set_suspend(dev
, FBINFO_STATE_RUNNING
);
672 schedule_work(&dev_priv
->console_resume_work
);
675 mutex_lock(&dev_priv
->modeset_restore_lock
);
676 dev_priv
->modeset_restore
= MODESET_DONE
;
677 mutex_unlock(&dev_priv
->modeset_restore_lock
);
679 intel_runtime_pm_put(dev_priv
);
683 static int i915_drm_thaw(struct drm_device
*dev
)
685 if (drm_core_check_feature(dev
, DRIVER_MODESET
))
686 i915_check_and_clear_faults(dev
);
688 return __i915_drm_thaw(dev
, true);
691 static int i915_resume_early(struct drm_device
*dev
)
693 if (dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
697 * We have a resume ordering issue with the snd-hda driver also
698 * requiring our device to be power up. Due to the lack of a
699 * parent/child relationship we currently solve this with an early
702 * FIXME: This should be solved with a special hdmi sink device or
703 * similar so that power domains can be employed.
705 if (pci_enable_device(dev
->pdev
))
708 pci_set_master(dev
->pdev
);
710 return i915_drm_thaw_early(dev
);
713 int i915_resume(struct drm_device
*dev
)
715 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
719 * Platforms with opregion should have sane BIOS, older ones (gen3 and
720 * earlier) need to restore the GTT mappings since the BIOS might clear
721 * all our scratch PTEs.
723 ret
= __i915_drm_thaw(dev
, !dev_priv
->opregion
.header
);
727 drm_kms_helper_poll_enable(dev
);
731 static int i915_resume_legacy(struct drm_device
*dev
)
733 i915_resume_early(dev
);
740 * i915_reset - reset chip after a hang
741 * @dev: drm device to reset
743 * Reset the chip. Useful if a hang is detected. Returns zero on successful
744 * reset or otherwise an error code.
746 * Procedure is fairly simple:
747 * - reset the chip using the reset reg
748 * - re-init context state
749 * - re-init hardware status page
750 * - re-init ring buffer
751 * - re-init interrupt state
754 int i915_reset(struct drm_device
*dev
)
756 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
763 mutex_lock(&dev
->struct_mutex
);
767 simulated
= dev_priv
->gpu_error
.stop_rings
!= 0;
769 ret
= intel_gpu_reset(dev
);
771 /* Also reset the gpu hangman. */
773 DRM_INFO("Simulated gpu hang, resetting stop_rings\n");
774 dev_priv
->gpu_error
.stop_rings
= 0;
775 if (ret
== -ENODEV
) {
776 DRM_INFO("Reset not implemented, but ignoring "
777 "error for simulated gpu hangs\n");
783 DRM_ERROR("Failed to reset chip: %i\n", ret
);
784 mutex_unlock(&dev
->struct_mutex
);
788 /* Ok, now get things going again... */
791 * Everything depends on having the GTT running, so we need to start
792 * there. Fortunately we don't need to do this unless we reset the
793 * chip at a PCI level.
795 * Next we need to restore the context, but we don't use those
798 * Ring buffer needs to be re-initialized in the KMS case, or if X
799 * was running at the time of the reset (i.e. we weren't VT
802 if (drm_core_check_feature(dev
, DRIVER_MODESET
) ||
803 !dev_priv
->ums
.mm_suspended
) {
804 dev_priv
->ums
.mm_suspended
= 0;
806 ret
= i915_gem_init_hw(dev
);
807 mutex_unlock(&dev
->struct_mutex
);
809 DRM_ERROR("Failed hw init on reset %d\n", ret
);
814 * FIXME: This races pretty badly against concurrent holders of
815 * ring interrupts. This is possible since we've started to drop
816 * dev->struct_mutex in select places when waiting for the gpu.
820 * rps/rc6 re-init is necessary to restore state lost after the
821 * reset and the re-install of gt irqs. Skip for ironlake per
822 * previous concerns that it doesn't respond well to some forms
823 * of re-init after reset.
825 if (INTEL_INFO(dev
)->gen
> 5)
826 intel_reset_gt_powersave(dev
);
830 mutex_unlock(&dev
->struct_mutex
);
836 static int i915_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
838 struct intel_device_info
*intel_info
=
839 (struct intel_device_info
*) ent
->driver_data
;
841 if (IS_PRELIMINARY_HW(intel_info
) && !i915
.preliminary_hw_support
) {
842 DRM_INFO("This hardware requires preliminary hardware support.\n"
843 "See CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT, and/or modparam preliminary_hw_support\n");
847 /* Only bind to function 0 of the device. Early generations
848 * used function 1 as a placeholder for multi-head. This causes
849 * us confusion instead, especially on the systems where both
850 * functions have the same PCI-ID!
852 if (PCI_FUNC(pdev
->devfn
))
855 driver
.driver_features
&= ~(DRIVER_USE_AGP
);
857 return drm_get_pci_dev(pdev
, ent
, &driver
);
861 i915_pci_remove(struct pci_dev
*pdev
)
863 struct drm_device
*dev
= pci_get_drvdata(pdev
);
868 static int i915_pm_suspend(struct device
*dev
)
870 struct pci_dev
*pdev
= to_pci_dev(dev
);
871 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
873 if (!drm_dev
|| !drm_dev
->dev_private
) {
874 dev_err(dev
, "DRM not initialized, aborting suspend.\n");
878 if (drm_dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
881 return i915_drm_freeze(drm_dev
);
884 static int i915_pm_suspend_late(struct device
*dev
)
886 struct pci_dev
*pdev
= to_pci_dev(dev
);
887 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
890 * We have a suspedn ordering issue with the snd-hda driver also
891 * requiring our device to be power up. Due to the lack of a
892 * parent/child relationship we currently solve this with an late
895 * FIXME: This should be solved with a special hdmi sink device or
896 * similar so that power domains can be employed.
898 if (drm_dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
901 pci_disable_device(pdev
);
902 pci_set_power_state(pdev
, PCI_D3hot
);
907 static int i915_pm_resume_early(struct device
*dev
)
909 struct pci_dev
*pdev
= to_pci_dev(dev
);
910 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
912 return i915_resume_early(drm_dev
);
915 static int i915_pm_resume(struct device
*dev
)
917 struct pci_dev
*pdev
= to_pci_dev(dev
);
918 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
920 return i915_resume(drm_dev
);
923 static int i915_pm_freeze(struct device
*dev
)
925 struct pci_dev
*pdev
= to_pci_dev(dev
);
926 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
928 if (!drm_dev
|| !drm_dev
->dev_private
) {
929 dev_err(dev
, "DRM not initialized, aborting suspend.\n");
933 return i915_drm_freeze(drm_dev
);
936 static int i915_pm_thaw_early(struct device
*dev
)
938 struct pci_dev
*pdev
= to_pci_dev(dev
);
939 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
941 return i915_drm_thaw_early(drm_dev
);
944 static int i915_pm_thaw(struct device
*dev
)
946 struct pci_dev
*pdev
= to_pci_dev(dev
);
947 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
949 return i915_drm_thaw(drm_dev
);
952 static int i915_pm_poweroff(struct device
*dev
)
954 struct pci_dev
*pdev
= to_pci_dev(dev
);
955 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
957 return i915_drm_freeze(drm_dev
);
960 static int hsw_runtime_suspend(struct drm_i915_private
*dev_priv
)
962 hsw_enable_pc8(dev_priv
);
967 static int snb_runtime_resume(struct drm_i915_private
*dev_priv
)
969 struct drm_device
*dev
= dev_priv
->dev
;
971 intel_init_pch_refclk(dev
);
976 static int hsw_runtime_resume(struct drm_i915_private
*dev_priv
)
978 hsw_disable_pc8(dev_priv
);
984 * Save all Gunit registers that may be lost after a D3 and a subsequent
985 * S0i[R123] transition. The list of registers needing a save/restore is
986 * defined in the VLV2_S0IXRegs document. This documents marks all Gunit
987 * registers in the following way:
988 * - Driver: saved/restored by the driver
989 * - Punit : saved/restored by the Punit firmware
990 * - No, w/o marking: no need to save/restore, since the register is R/O or
991 * used internally by the HW in a way that doesn't depend
992 * keeping the content across a suspend/resume.
993 * - Debug : used for debugging
995 * We save/restore all registers marked with 'Driver', with the following
997 * - Registers out of use, including also registers marked with 'Debug'.
998 * These have no effect on the driver's operation, so we don't save/restore
999 * them to reduce the overhead.
1000 * - Registers that are fully setup by an initialization function called from
1001 * the resume path. For example many clock gating and RPS/RC6 registers.
1002 * - Registers that provide the right functionality with their reset defaults.
1004 * TODO: Except for registers that based on the above 3 criteria can be safely
1005 * ignored, we save/restore all others, practically treating the HW context as
1006 * a black-box for the driver. Further investigation is needed to reduce the
1007 * saved/restored registers even further, by following the same 3 criteria.
1009 static void vlv_save_gunit_s0ix_state(struct drm_i915_private
*dev_priv
)
1011 struct vlv_s0ix_state
*s
= &dev_priv
->vlv_s0ix_state
;
1014 /* GAM 0x4000-0x4770 */
1015 s
->wr_watermark
= I915_READ(GEN7_WR_WATERMARK
);
1016 s
->gfx_prio_ctrl
= I915_READ(GEN7_GFX_PRIO_CTRL
);
1017 s
->arb_mode
= I915_READ(ARB_MODE
);
1018 s
->gfx_pend_tlb0
= I915_READ(GEN7_GFX_PEND_TLB0
);
1019 s
->gfx_pend_tlb1
= I915_READ(GEN7_GFX_PEND_TLB1
);
1021 for (i
= 0; i
< ARRAY_SIZE(s
->lra_limits
); i
++)
1022 s
->lra_limits
[i
] = I915_READ(GEN7_LRA_LIMITS_BASE
+ i
* 4);
1024 s
->media_max_req_count
= I915_READ(GEN7_MEDIA_MAX_REQ_COUNT
);
1025 s
->gfx_max_req_count
= I915_READ(GEN7_MEDIA_MAX_REQ_COUNT
);
1027 s
->render_hwsp
= I915_READ(RENDER_HWS_PGA_GEN7
);
1028 s
->ecochk
= I915_READ(GAM_ECOCHK
);
1029 s
->bsd_hwsp
= I915_READ(BSD_HWS_PGA_GEN7
);
1030 s
->blt_hwsp
= I915_READ(BLT_HWS_PGA_GEN7
);
1032 s
->tlb_rd_addr
= I915_READ(GEN7_TLB_RD_ADDR
);
1034 /* MBC 0x9024-0x91D0, 0x8500 */
1035 s
->g3dctl
= I915_READ(VLV_G3DCTL
);
1036 s
->gsckgctl
= I915_READ(VLV_GSCKGCTL
);
1037 s
->mbctl
= I915_READ(GEN6_MBCTL
);
1039 /* GCP 0x9400-0x9424, 0x8100-0x810C */
1040 s
->ucgctl1
= I915_READ(GEN6_UCGCTL1
);
1041 s
->ucgctl3
= I915_READ(GEN6_UCGCTL3
);
1042 s
->rcgctl1
= I915_READ(GEN6_RCGCTL1
);
1043 s
->rcgctl2
= I915_READ(GEN6_RCGCTL2
);
1044 s
->rstctl
= I915_READ(GEN6_RSTCTL
);
1045 s
->misccpctl
= I915_READ(GEN7_MISCCPCTL
);
1047 /* GPM 0xA000-0xAA84, 0x8000-0x80FC */
1048 s
->gfxpause
= I915_READ(GEN6_GFXPAUSE
);
1049 s
->rpdeuhwtc
= I915_READ(GEN6_RPDEUHWTC
);
1050 s
->rpdeuc
= I915_READ(GEN6_RPDEUC
);
1051 s
->ecobus
= I915_READ(ECOBUS
);
1052 s
->pwrdwnupctl
= I915_READ(VLV_PWRDWNUPCTL
);
1053 s
->rp_down_timeout
= I915_READ(GEN6_RP_DOWN_TIMEOUT
);
1054 s
->rp_deucsw
= I915_READ(GEN6_RPDEUCSW
);
1055 s
->rcubmabdtmr
= I915_READ(GEN6_RCUBMABDTMR
);
1056 s
->rcedata
= I915_READ(VLV_RCEDATA
);
1057 s
->spare2gh
= I915_READ(VLV_SPAREG2H
);
1059 /* Display CZ domain, 0x4400C-0x4402C, 0x4F000-0x4F11F */
1060 s
->gt_imr
= I915_READ(GTIMR
);
1061 s
->gt_ier
= I915_READ(GTIER
);
1062 s
->pm_imr
= I915_READ(GEN6_PMIMR
);
1063 s
->pm_ier
= I915_READ(GEN6_PMIER
);
1065 for (i
= 0; i
< ARRAY_SIZE(s
->gt_scratch
); i
++)
1066 s
->gt_scratch
[i
] = I915_READ(GEN7_GT_SCRATCH_BASE
+ i
* 4);
1068 /* GT SA CZ domain, 0x100000-0x138124 */
1069 s
->tilectl
= I915_READ(TILECTL
);
1070 s
->gt_fifoctl
= I915_READ(GTFIFOCTL
);
1071 s
->gtlc_wake_ctrl
= I915_READ(VLV_GTLC_WAKE_CTRL
);
1072 s
->gtlc_survive
= I915_READ(VLV_GTLC_SURVIVABILITY_REG
);
1073 s
->pmwgicz
= I915_READ(VLV_PMWGICZ
);
1075 /* Gunit-Display CZ domain, 0x182028-0x1821CF */
1076 s
->gu_ctl0
= I915_READ(VLV_GU_CTL0
);
1077 s
->gu_ctl1
= I915_READ(VLV_GU_CTL1
);
1078 s
->clock_gate_dis2
= I915_READ(VLV_GUNIT_CLOCK_GATE2
);
1081 * Not saving any of:
1082 * DFT, 0x9800-0x9EC0
1083 * SARB, 0xB000-0xB1FC
1084 * GAC, 0x5208-0x524C, 0x14000-0x14C000
1089 static void vlv_restore_gunit_s0ix_state(struct drm_i915_private
*dev_priv
)
1091 struct vlv_s0ix_state
*s
= &dev_priv
->vlv_s0ix_state
;
1095 /* GAM 0x4000-0x4770 */
1096 I915_WRITE(GEN7_WR_WATERMARK
, s
->wr_watermark
);
1097 I915_WRITE(GEN7_GFX_PRIO_CTRL
, s
->gfx_prio_ctrl
);
1098 I915_WRITE(ARB_MODE
, s
->arb_mode
| (0xffff << 16));
1099 I915_WRITE(GEN7_GFX_PEND_TLB0
, s
->gfx_pend_tlb0
);
1100 I915_WRITE(GEN7_GFX_PEND_TLB1
, s
->gfx_pend_tlb1
);
1102 for (i
= 0; i
< ARRAY_SIZE(s
->lra_limits
); i
++)
1103 I915_WRITE(GEN7_LRA_LIMITS_BASE
+ i
* 4, s
->lra_limits
[i
]);
1105 I915_WRITE(GEN7_MEDIA_MAX_REQ_COUNT
, s
->media_max_req_count
);
1106 I915_WRITE(GEN7_MEDIA_MAX_REQ_COUNT
, s
->gfx_max_req_count
);
1108 I915_WRITE(RENDER_HWS_PGA_GEN7
, s
->render_hwsp
);
1109 I915_WRITE(GAM_ECOCHK
, s
->ecochk
);
1110 I915_WRITE(BSD_HWS_PGA_GEN7
, s
->bsd_hwsp
);
1111 I915_WRITE(BLT_HWS_PGA_GEN7
, s
->blt_hwsp
);
1113 I915_WRITE(GEN7_TLB_RD_ADDR
, s
->tlb_rd_addr
);
1115 /* MBC 0x9024-0x91D0, 0x8500 */
1116 I915_WRITE(VLV_G3DCTL
, s
->g3dctl
);
1117 I915_WRITE(VLV_GSCKGCTL
, s
->gsckgctl
);
1118 I915_WRITE(GEN6_MBCTL
, s
->mbctl
);
1120 /* GCP 0x9400-0x9424, 0x8100-0x810C */
1121 I915_WRITE(GEN6_UCGCTL1
, s
->ucgctl1
);
1122 I915_WRITE(GEN6_UCGCTL3
, s
->ucgctl3
);
1123 I915_WRITE(GEN6_RCGCTL1
, s
->rcgctl1
);
1124 I915_WRITE(GEN6_RCGCTL2
, s
->rcgctl2
);
1125 I915_WRITE(GEN6_RSTCTL
, s
->rstctl
);
1126 I915_WRITE(GEN7_MISCCPCTL
, s
->misccpctl
);
1128 /* GPM 0xA000-0xAA84, 0x8000-0x80FC */
1129 I915_WRITE(GEN6_GFXPAUSE
, s
->gfxpause
);
1130 I915_WRITE(GEN6_RPDEUHWTC
, s
->rpdeuhwtc
);
1131 I915_WRITE(GEN6_RPDEUC
, s
->rpdeuc
);
1132 I915_WRITE(ECOBUS
, s
->ecobus
);
1133 I915_WRITE(VLV_PWRDWNUPCTL
, s
->pwrdwnupctl
);
1134 I915_WRITE(GEN6_RP_DOWN_TIMEOUT
,s
->rp_down_timeout
);
1135 I915_WRITE(GEN6_RPDEUCSW
, s
->rp_deucsw
);
1136 I915_WRITE(GEN6_RCUBMABDTMR
, s
->rcubmabdtmr
);
1137 I915_WRITE(VLV_RCEDATA
, s
->rcedata
);
1138 I915_WRITE(VLV_SPAREG2H
, s
->spare2gh
);
1140 /* Display CZ domain, 0x4400C-0x4402C, 0x4F000-0x4F11F */
1141 I915_WRITE(GTIMR
, s
->gt_imr
);
1142 I915_WRITE(GTIER
, s
->gt_ier
);
1143 I915_WRITE(GEN6_PMIMR
, s
->pm_imr
);
1144 I915_WRITE(GEN6_PMIER
, s
->pm_ier
);
1146 for (i
= 0; i
< ARRAY_SIZE(s
->gt_scratch
); i
++)
1147 I915_WRITE(GEN7_GT_SCRATCH_BASE
+ i
* 4, s
->gt_scratch
[i
]);
1149 /* GT SA CZ domain, 0x100000-0x138124 */
1150 I915_WRITE(TILECTL
, s
->tilectl
);
1151 I915_WRITE(GTFIFOCTL
, s
->gt_fifoctl
);
1153 * Preserve the GT allow wake and GFX force clock bit, they are not
1154 * be restored, as they are used to control the s0ix suspend/resume
1155 * sequence by the caller.
1157 val
= I915_READ(VLV_GTLC_WAKE_CTRL
);
1158 val
&= VLV_GTLC_ALLOWWAKEREQ
;
1159 val
|= s
->gtlc_wake_ctrl
& ~VLV_GTLC_ALLOWWAKEREQ
;
1160 I915_WRITE(VLV_GTLC_WAKE_CTRL
, val
);
1162 val
= I915_READ(VLV_GTLC_SURVIVABILITY_REG
);
1163 val
&= VLV_GFX_CLK_FORCE_ON_BIT
;
1164 val
|= s
->gtlc_survive
& ~VLV_GFX_CLK_FORCE_ON_BIT
;
1165 I915_WRITE(VLV_GTLC_SURVIVABILITY_REG
, val
);
1167 I915_WRITE(VLV_PMWGICZ
, s
->pmwgicz
);
1169 /* Gunit-Display CZ domain, 0x182028-0x1821CF */
1170 I915_WRITE(VLV_GU_CTL0
, s
->gu_ctl0
);
1171 I915_WRITE(VLV_GU_CTL1
, s
->gu_ctl1
);
1172 I915_WRITE(VLV_GUNIT_CLOCK_GATE2
, s
->clock_gate_dis2
);
1175 int vlv_force_gfx_clock(struct drm_i915_private
*dev_priv
, bool force_on
)
1180 val
= I915_READ(VLV_GTLC_SURVIVABILITY_REG
);
1181 WARN_ON(!!(val
& VLV_GFX_CLK_FORCE_ON_BIT
) == force_on
);
1183 #define COND (I915_READ(VLV_GTLC_SURVIVABILITY_REG) & VLV_GFX_CLK_STATUS_BIT)
1184 /* Wait for a previous force-off to settle */
1186 err
= wait_for(!COND
, 20);
1188 DRM_ERROR("timeout waiting for GFX clock force-off (%08x)\n",
1189 I915_READ(VLV_GTLC_SURVIVABILITY_REG
));
1194 val
= I915_READ(VLV_GTLC_SURVIVABILITY_REG
);
1195 val
&= ~VLV_GFX_CLK_FORCE_ON_BIT
;
1197 val
|= VLV_GFX_CLK_FORCE_ON_BIT
;
1198 I915_WRITE(VLV_GTLC_SURVIVABILITY_REG
, val
);
1203 err
= wait_for(COND
, 20);
1205 DRM_ERROR("timeout waiting for GFX clock force-on (%08x)\n",
1206 I915_READ(VLV_GTLC_SURVIVABILITY_REG
));
1212 static int vlv_allow_gt_wake(struct drm_i915_private
*dev_priv
, bool allow
)
1217 val
= I915_READ(VLV_GTLC_WAKE_CTRL
);
1218 val
&= ~VLV_GTLC_ALLOWWAKEREQ
;
1220 val
|= VLV_GTLC_ALLOWWAKEREQ
;
1221 I915_WRITE(VLV_GTLC_WAKE_CTRL
, val
);
1222 POSTING_READ(VLV_GTLC_WAKE_CTRL
);
1224 #define COND (!!(I915_READ(VLV_GTLC_PW_STATUS) & VLV_GTLC_ALLOWWAKEACK) == \
1226 err
= wait_for(COND
, 1);
1228 DRM_ERROR("timeout disabling GT waking\n");
1233 static int vlv_wait_for_gt_wells(struct drm_i915_private
*dev_priv
,
1240 mask
= VLV_GTLC_PW_MEDIA_STATUS_MASK
| VLV_GTLC_PW_RENDER_STATUS_MASK
;
1241 val
= wait_for_on
? mask
: 0;
1242 #define COND ((I915_READ(VLV_GTLC_PW_STATUS) & mask) == val)
1246 DRM_DEBUG_KMS("waiting for GT wells to go %s (%08x)\n",
1247 wait_for_on
? "on" : "off",
1248 I915_READ(VLV_GTLC_PW_STATUS
));
1251 * RC6 transitioning can be delayed up to 2 msec (see
1252 * valleyview_enable_rps), use 3 msec for safety.
1254 err
= wait_for(COND
, 3);
1256 DRM_ERROR("timeout waiting for GT wells to go %s\n",
1257 wait_for_on
? "on" : "off");
1263 static void vlv_check_no_gt_access(struct drm_i915_private
*dev_priv
)
1265 if (!(I915_READ(VLV_GTLC_PW_STATUS
) & VLV_GTLC_ALLOWWAKEERR
))
1268 DRM_ERROR("GT register access while GT waking disabled\n");
1269 I915_WRITE(VLV_GTLC_PW_STATUS
, VLV_GTLC_ALLOWWAKEERR
);
1272 static int vlv_runtime_suspend(struct drm_i915_private
*dev_priv
)
1278 * Bspec defines the following GT well on flags as debug only, so
1279 * don't treat them as hard failures.
1281 (void)vlv_wait_for_gt_wells(dev_priv
, false);
1283 mask
= VLV_GTLC_RENDER_CTX_EXISTS
| VLV_GTLC_MEDIA_CTX_EXISTS
;
1284 WARN_ON((I915_READ(VLV_GTLC_WAKE_CTRL
) & mask
) != mask
);
1286 vlv_check_no_gt_access(dev_priv
);
1288 err
= vlv_force_gfx_clock(dev_priv
, true);
1292 err
= vlv_allow_gt_wake(dev_priv
, false);
1295 vlv_save_gunit_s0ix_state(dev_priv
);
1297 err
= vlv_force_gfx_clock(dev_priv
, false);
1304 /* For safety always re-enable waking and disable gfx clock forcing */
1305 vlv_allow_gt_wake(dev_priv
, true);
1307 vlv_force_gfx_clock(dev_priv
, false);
1312 static int vlv_runtime_resume(struct drm_i915_private
*dev_priv
)
1314 struct drm_device
*dev
= dev_priv
->dev
;
1319 * If any of the steps fail just try to continue, that's the best we
1320 * can do at this point. Return the first error code (which will also
1321 * leave RPM permanently disabled).
1323 ret
= vlv_force_gfx_clock(dev_priv
, true);
1325 vlv_restore_gunit_s0ix_state(dev_priv
);
1327 err
= vlv_allow_gt_wake(dev_priv
, true);
1331 err
= vlv_force_gfx_clock(dev_priv
, false);
1335 vlv_check_no_gt_access(dev_priv
);
1337 intel_init_clock_gating(dev
);
1338 i915_gem_restore_fences(dev
);
1343 static int intel_runtime_suspend(struct device
*device
)
1345 struct pci_dev
*pdev
= to_pci_dev(device
);
1346 struct drm_device
*dev
= pci_get_drvdata(pdev
);
1347 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1350 if (WARN_ON_ONCE(!(dev_priv
->rps
.enabled
&& intel_enable_rc6(dev
))))
1353 WARN_ON(!HAS_RUNTIME_PM(dev
));
1354 assert_force_wake_inactive(dev_priv
);
1356 DRM_DEBUG_KMS("Suspending device\n");
1359 * We could deadlock here in case another thread holding struct_mutex
1360 * calls RPM suspend concurrently, since the RPM suspend will wait
1361 * first for this RPM suspend to finish. In this case the concurrent
1362 * RPM resume will be followed by its RPM suspend counterpart. Still
1363 * for consistency return -EAGAIN, which will reschedule this suspend.
1365 if (!mutex_trylock(&dev
->struct_mutex
)) {
1366 DRM_DEBUG_KMS("device lock contention, deffering suspend\n");
1368 * Bump the expiration timestamp, otherwise the suspend won't
1371 pm_runtime_mark_last_busy(device
);
1376 * We are safe here against re-faults, since the fault handler takes
1379 i915_gem_release_all_mmaps(dev_priv
);
1380 mutex_unlock(&dev
->struct_mutex
);
1383 * rps.work can't be rearmed here, since we get here only after making
1384 * sure the GPU is idle and the RPS freq is set to the minimum. See
1385 * intel_mark_idle().
1387 cancel_work_sync(&dev_priv
->rps
.work
);
1388 intel_runtime_pm_disable_interrupts(dev
);
1392 } else if (IS_HASWELL(dev
) || IS_BROADWELL(dev
)) {
1393 ret
= hsw_runtime_suspend(dev_priv
);
1394 } else if (IS_VALLEYVIEW(dev
)) {
1395 ret
= vlv_runtime_suspend(dev_priv
);
1402 DRM_ERROR("Runtime suspend failed, disabling it (%d)\n", ret
);
1403 intel_runtime_pm_restore_interrupts(dev
);
1408 del_timer_sync(&dev_priv
->gpu_error
.hangcheck_timer
);
1409 dev_priv
->pm
.suspended
= true;
1412 * current versions of firmware which depend on this opregion
1413 * notification have repurposed the D1 definition to mean
1414 * "runtime suspended" vs. what you would normally expect (D3)
1415 * to distinguish it from notifications that might be sent
1416 * via the suspend path.
1418 intel_opregion_notify_adapter(dev
, PCI_D1
);
1420 DRM_DEBUG_KMS("Device suspended\n");
1424 static int intel_runtime_resume(struct device
*device
)
1426 struct pci_dev
*pdev
= to_pci_dev(device
);
1427 struct drm_device
*dev
= pci_get_drvdata(pdev
);
1428 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1431 WARN_ON(!HAS_RUNTIME_PM(dev
));
1433 DRM_DEBUG_KMS("Resuming device\n");
1435 intel_opregion_notify_adapter(dev
, PCI_D0
);
1436 dev_priv
->pm
.suspended
= false;
1439 ret
= snb_runtime_resume(dev_priv
);
1440 } else if (IS_HASWELL(dev
) || IS_BROADWELL(dev
)) {
1441 ret
= hsw_runtime_resume(dev_priv
);
1442 } else if (IS_VALLEYVIEW(dev
)) {
1443 ret
= vlv_runtime_resume(dev_priv
);
1450 * No point of rolling back things in case of an error, as the best
1451 * we can do is to hope that things will still work (and disable RPM).
1453 i915_gem_init_swizzling(dev
);
1454 gen6_update_ring_freq(dev
);
1456 intel_runtime_pm_restore_interrupts(dev
);
1457 intel_reset_gt_powersave(dev
);
1460 DRM_ERROR("Runtime resume failed, disabling it (%d)\n", ret
);
1462 DRM_DEBUG_KMS("Device resumed\n");
1467 static const struct dev_pm_ops i915_pm_ops
= {
1468 .suspend
= i915_pm_suspend
,
1469 .suspend_late
= i915_pm_suspend_late
,
1470 .resume_early
= i915_pm_resume_early
,
1471 .resume
= i915_pm_resume
,
1472 .freeze
= i915_pm_freeze
,
1473 .thaw_early
= i915_pm_thaw_early
,
1474 .thaw
= i915_pm_thaw
,
1475 .poweroff
= i915_pm_poweroff
,
1476 .restore_early
= i915_pm_resume_early
,
1477 .restore
= i915_pm_resume
,
1478 .runtime_suspend
= intel_runtime_suspend
,
1479 .runtime_resume
= intel_runtime_resume
,
1482 static const struct vm_operations_struct i915_gem_vm_ops
= {
1483 .fault
= i915_gem_fault
,
1484 .open
= drm_gem_vm_open
,
1485 .close
= drm_gem_vm_close
,
1488 static const struct file_operations i915_driver_fops
= {
1489 .owner
= THIS_MODULE
,
1491 .release
= drm_release
,
1492 .unlocked_ioctl
= drm_ioctl
,
1493 .mmap
= drm_gem_mmap
,
1496 #ifdef CONFIG_COMPAT
1497 .compat_ioctl
= i915_compat_ioctl
,
1499 .llseek
= noop_llseek
,
1502 static struct drm_driver driver
= {
1503 /* Don't use MTRRs here; the Xserver or userspace app should
1504 * deal with them for Intel hardware.
1508 DRIVER_HAVE_IRQ
| DRIVER_IRQ_SHARED
| DRIVER_GEM
| DRIVER_PRIME
|
1510 .load
= i915_driver_load
,
1511 .unload
= i915_driver_unload
,
1512 .open
= i915_driver_open
,
1513 .lastclose
= i915_driver_lastclose
,
1514 .preclose
= i915_driver_preclose
,
1515 .postclose
= i915_driver_postclose
,
1517 /* Used in place of i915_pm_ops for non-DRIVER_MODESET */
1518 .suspend
= i915_suspend
,
1519 .resume
= i915_resume_legacy
,
1521 .device_is_agp
= i915_driver_device_is_agp
,
1522 .master_create
= i915_master_create
,
1523 .master_destroy
= i915_master_destroy
,
1524 #if defined(CONFIG_DEBUG_FS)
1525 .debugfs_init
= i915_debugfs_init
,
1526 .debugfs_cleanup
= i915_debugfs_cleanup
,
1528 .gem_free_object
= i915_gem_free_object
,
1529 .gem_vm_ops
= &i915_gem_vm_ops
,
1531 .prime_handle_to_fd
= drm_gem_prime_handle_to_fd
,
1532 .prime_fd_to_handle
= drm_gem_prime_fd_to_handle
,
1533 .gem_prime_export
= i915_gem_prime_export
,
1534 .gem_prime_import
= i915_gem_prime_import
,
1536 .dumb_create
= i915_gem_dumb_create
,
1537 .dumb_map_offset
= i915_gem_mmap_gtt
,
1538 .dumb_destroy
= drm_gem_dumb_destroy
,
1539 .ioctls
= i915_ioctls
,
1540 .fops
= &i915_driver_fops
,
1541 .name
= DRIVER_NAME
,
1542 .desc
= DRIVER_DESC
,
1543 .date
= DRIVER_DATE
,
1544 .major
= DRIVER_MAJOR
,
1545 .minor
= DRIVER_MINOR
,
1546 .patchlevel
= DRIVER_PATCHLEVEL
,
1549 static struct pci_driver i915_pci_driver
= {
1550 .name
= DRIVER_NAME
,
1551 .id_table
= pciidlist
,
1552 .probe
= i915_pci_probe
,
1553 .remove
= i915_pci_remove
,
1554 .driver
.pm
= &i915_pm_ops
,
1557 static int __init
i915_init(void)
1559 driver
.num_ioctls
= i915_max_ioctl
;
1562 * If CONFIG_DRM_I915_KMS is set, default to KMS unless
1563 * explicitly disabled with the module pararmeter.
1565 * Otherwise, just follow the parameter (defaulting to off).
1567 * Allow optional vga_text_mode_force boot option to override
1568 * the default behavior.
1570 #if defined(CONFIG_DRM_I915_KMS)
1571 if (i915
.modeset
!= 0)
1572 driver
.driver_features
|= DRIVER_MODESET
;
1574 if (i915
.modeset
== 1)
1575 driver
.driver_features
|= DRIVER_MODESET
;
1577 #ifdef CONFIG_VGA_CONSOLE
1578 if (vgacon_text_force() && i915
.modeset
== -1)
1579 driver
.driver_features
&= ~DRIVER_MODESET
;
1582 if (!(driver
.driver_features
& DRIVER_MODESET
)) {
1583 driver
.get_vblank_timestamp
= NULL
;
1584 #ifndef CONFIG_DRM_I915_UMS
1585 /* Silently fail loading to not upset userspace. */
1586 DRM_DEBUG_DRIVER("KMS and UMS disabled.\n");
1591 return drm_pci_init(&driver
, &i915_pci_driver
);
1594 static void __exit
i915_exit(void)
1596 #ifndef CONFIG_DRM_I915_UMS
1597 if (!(driver
.driver_features
& DRIVER_MODESET
))
1598 return; /* Never loaded a driver. */
1601 drm_pci_exit(&driver
, &i915_pci_driver
);
1604 module_init(i915_init
);
1605 module_exit(i915_exit
);
1607 MODULE_AUTHOR(DRIVER_AUTHOR
);
1608 MODULE_DESCRIPTION(DRIVER_DESC
);
1609 MODULE_LICENSE("GPL and additional rights");