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 <drm/drm_crtc_helper.h>
41 static struct drm_driver driver
;
43 #define GEN_DEFAULT_PIPEOFFSETS \
44 .pipe_offsets = { PIPE_A_OFFSET, PIPE_B_OFFSET, \
45 PIPE_C_OFFSET, PIPE_EDP_OFFSET }, \
46 .trans_offsets = { TRANSCODER_A_OFFSET, TRANSCODER_B_OFFSET, \
47 TRANSCODER_C_OFFSET, TRANSCODER_EDP_OFFSET }, \
48 .dpll_offsets = { DPLL_A_OFFSET, DPLL_B_OFFSET }, \
49 .dpll_md_offsets = { DPLL_A_MD_OFFSET, DPLL_B_MD_OFFSET }, \
50 .palette_offsets = { PALETTE_A_OFFSET, PALETTE_B_OFFSET }
53 static const struct intel_device_info intel_i830_info
= {
54 .gen
= 2, .is_mobile
= 1, .cursor_needs_physical
= 1, .num_pipes
= 2,
55 .has_overlay
= 1, .overlay_needs_physical
= 1,
56 .ring_mask
= RENDER_RING
,
57 GEN_DEFAULT_PIPEOFFSETS
,
60 static const struct intel_device_info intel_845g_info
= {
61 .gen
= 2, .num_pipes
= 1,
62 .has_overlay
= 1, .overlay_needs_physical
= 1,
63 .ring_mask
= RENDER_RING
,
64 GEN_DEFAULT_PIPEOFFSETS
,
67 static const struct intel_device_info intel_i85x_info
= {
68 .gen
= 2, .is_i85x
= 1, .is_mobile
= 1, .num_pipes
= 2,
69 .cursor_needs_physical
= 1,
70 .has_overlay
= 1, .overlay_needs_physical
= 1,
72 .ring_mask
= RENDER_RING
,
73 GEN_DEFAULT_PIPEOFFSETS
,
76 static const struct intel_device_info intel_i865g_info
= {
77 .gen
= 2, .num_pipes
= 1,
78 .has_overlay
= 1, .overlay_needs_physical
= 1,
79 .ring_mask
= RENDER_RING
,
80 GEN_DEFAULT_PIPEOFFSETS
,
83 static const struct intel_device_info intel_i915g_info
= {
84 .gen
= 3, .is_i915g
= 1, .cursor_needs_physical
= 1, .num_pipes
= 2,
85 .has_overlay
= 1, .overlay_needs_physical
= 1,
86 .ring_mask
= RENDER_RING
,
87 GEN_DEFAULT_PIPEOFFSETS
,
89 static const struct intel_device_info intel_i915gm_info
= {
90 .gen
= 3, .is_mobile
= 1, .num_pipes
= 2,
91 .cursor_needs_physical
= 1,
92 .has_overlay
= 1, .overlay_needs_physical
= 1,
95 .ring_mask
= RENDER_RING
,
96 GEN_DEFAULT_PIPEOFFSETS
,
98 static const struct intel_device_info intel_i945g_info
= {
99 .gen
= 3, .has_hotplug
= 1, .cursor_needs_physical
= 1, .num_pipes
= 2,
100 .has_overlay
= 1, .overlay_needs_physical
= 1,
101 .ring_mask
= RENDER_RING
,
102 GEN_DEFAULT_PIPEOFFSETS
,
104 static const struct intel_device_info intel_i945gm_info
= {
105 .gen
= 3, .is_i945gm
= 1, .is_mobile
= 1, .num_pipes
= 2,
106 .has_hotplug
= 1, .cursor_needs_physical
= 1,
107 .has_overlay
= 1, .overlay_needs_physical
= 1,
110 .ring_mask
= RENDER_RING
,
111 GEN_DEFAULT_PIPEOFFSETS
,
114 static const struct intel_device_info intel_i965g_info
= {
115 .gen
= 4, .is_broadwater
= 1, .num_pipes
= 2,
118 .ring_mask
= RENDER_RING
,
119 GEN_DEFAULT_PIPEOFFSETS
,
122 static const struct intel_device_info intel_i965gm_info
= {
123 .gen
= 4, .is_crestline
= 1, .num_pipes
= 2,
124 .is_mobile
= 1, .has_fbc
= 1, .has_hotplug
= 1,
127 .ring_mask
= RENDER_RING
,
128 GEN_DEFAULT_PIPEOFFSETS
,
131 static const struct intel_device_info intel_g33_info
= {
132 .gen
= 3, .is_g33
= 1, .num_pipes
= 2,
133 .need_gfx_hws
= 1, .has_hotplug
= 1,
135 .ring_mask
= RENDER_RING
,
136 GEN_DEFAULT_PIPEOFFSETS
,
139 static const struct intel_device_info intel_g45_info
= {
140 .gen
= 4, .is_g4x
= 1, .need_gfx_hws
= 1, .num_pipes
= 2,
141 .has_pipe_cxsr
= 1, .has_hotplug
= 1,
142 .ring_mask
= RENDER_RING
| BSD_RING
,
143 GEN_DEFAULT_PIPEOFFSETS
,
146 static const struct intel_device_info intel_gm45_info
= {
147 .gen
= 4, .is_g4x
= 1, .num_pipes
= 2,
148 .is_mobile
= 1, .need_gfx_hws
= 1, .has_fbc
= 1,
149 .has_pipe_cxsr
= 1, .has_hotplug
= 1,
151 .ring_mask
= RENDER_RING
| BSD_RING
,
152 GEN_DEFAULT_PIPEOFFSETS
,
155 static const struct intel_device_info intel_pineview_info
= {
156 .gen
= 3, .is_g33
= 1, .is_pineview
= 1, .is_mobile
= 1, .num_pipes
= 2,
157 .need_gfx_hws
= 1, .has_hotplug
= 1,
159 GEN_DEFAULT_PIPEOFFSETS
,
162 static const struct intel_device_info intel_ironlake_d_info
= {
163 .gen
= 5, .num_pipes
= 2,
164 .need_gfx_hws
= 1, .has_hotplug
= 1,
165 .ring_mask
= RENDER_RING
| BSD_RING
,
166 GEN_DEFAULT_PIPEOFFSETS
,
169 static const struct intel_device_info intel_ironlake_m_info
= {
170 .gen
= 5, .is_mobile
= 1, .num_pipes
= 2,
171 .need_gfx_hws
= 1, .has_hotplug
= 1,
173 .ring_mask
= RENDER_RING
| BSD_RING
,
174 GEN_DEFAULT_PIPEOFFSETS
,
177 static const struct intel_device_info intel_sandybridge_d_info
= {
178 .gen
= 6, .num_pipes
= 2,
179 .need_gfx_hws
= 1, .has_hotplug
= 1,
181 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
,
183 GEN_DEFAULT_PIPEOFFSETS
,
186 static const struct intel_device_info intel_sandybridge_m_info
= {
187 .gen
= 6, .is_mobile
= 1, .num_pipes
= 2,
188 .need_gfx_hws
= 1, .has_hotplug
= 1,
190 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
,
192 GEN_DEFAULT_PIPEOFFSETS
,
195 #define GEN7_FEATURES \
196 .gen = 7, .num_pipes = 3, \
197 .need_gfx_hws = 1, .has_hotplug = 1, \
199 .ring_mask = RENDER_RING | BSD_RING | BLT_RING, \
202 static const struct intel_device_info intel_ivybridge_d_info
= {
205 GEN_DEFAULT_PIPEOFFSETS
,
208 static const struct intel_device_info intel_ivybridge_m_info
= {
212 GEN_DEFAULT_PIPEOFFSETS
,
215 static const struct intel_device_info intel_ivybridge_q_info
= {
218 .num_pipes
= 0, /* legal, last one wins */
219 GEN_DEFAULT_PIPEOFFSETS
,
222 static const struct intel_device_info intel_valleyview_m_info
= {
227 .display_mmio_offset
= VLV_DISPLAY_BASE
,
228 .has_fbc
= 0, /* legal, last one wins */
229 .has_llc
= 0, /* legal, last one wins */
230 GEN_DEFAULT_PIPEOFFSETS
,
233 static const struct intel_device_info intel_valleyview_d_info
= {
237 .display_mmio_offset
= VLV_DISPLAY_BASE
,
238 .has_fbc
= 0, /* legal, last one wins */
239 .has_llc
= 0, /* legal, last one wins */
240 GEN_DEFAULT_PIPEOFFSETS
,
243 static const struct intel_device_info intel_haswell_d_info
= {
248 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
| VEBOX_RING
,
249 GEN_DEFAULT_PIPEOFFSETS
,
252 static const struct intel_device_info intel_haswell_m_info
= {
258 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
| VEBOX_RING
,
259 GEN_DEFAULT_PIPEOFFSETS
,
262 static const struct intel_device_info intel_broadwell_d_info
= {
263 .gen
= 8, .num_pipes
= 3,
264 .need_gfx_hws
= 1, .has_hotplug
= 1,
265 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
| VEBOX_RING
,
269 GEN_DEFAULT_PIPEOFFSETS
,
272 static const struct intel_device_info intel_broadwell_m_info
= {
273 .gen
= 8, .is_mobile
= 1, .num_pipes
= 3,
274 .need_gfx_hws
= 1, .has_hotplug
= 1,
275 .ring_mask
= RENDER_RING
| BSD_RING
| BLT_RING
| VEBOX_RING
,
279 GEN_DEFAULT_PIPEOFFSETS
,
283 * Make sure any device matches here are from most specific to most
284 * general. For example, since the Quanta match is based on the subsystem
285 * and subvendor IDs, we need it to come before the more general IVB
286 * PCI ID matches, otherwise we'll use the wrong info struct above.
288 #define INTEL_PCI_IDS \
289 INTEL_I830_IDS(&intel_i830_info), \
290 INTEL_I845G_IDS(&intel_845g_info), \
291 INTEL_I85X_IDS(&intel_i85x_info), \
292 INTEL_I865G_IDS(&intel_i865g_info), \
293 INTEL_I915G_IDS(&intel_i915g_info), \
294 INTEL_I915GM_IDS(&intel_i915gm_info), \
295 INTEL_I945G_IDS(&intel_i945g_info), \
296 INTEL_I945GM_IDS(&intel_i945gm_info), \
297 INTEL_I965G_IDS(&intel_i965g_info), \
298 INTEL_G33_IDS(&intel_g33_info), \
299 INTEL_I965GM_IDS(&intel_i965gm_info), \
300 INTEL_GM45_IDS(&intel_gm45_info), \
301 INTEL_G45_IDS(&intel_g45_info), \
302 INTEL_PINEVIEW_IDS(&intel_pineview_info), \
303 INTEL_IRONLAKE_D_IDS(&intel_ironlake_d_info), \
304 INTEL_IRONLAKE_M_IDS(&intel_ironlake_m_info), \
305 INTEL_SNB_D_IDS(&intel_sandybridge_d_info), \
306 INTEL_SNB_M_IDS(&intel_sandybridge_m_info), \
307 INTEL_IVB_Q_IDS(&intel_ivybridge_q_info), /* must be first IVB */ \
308 INTEL_IVB_M_IDS(&intel_ivybridge_m_info), \
309 INTEL_IVB_D_IDS(&intel_ivybridge_d_info), \
310 INTEL_HSW_D_IDS(&intel_haswell_d_info), \
311 INTEL_HSW_M_IDS(&intel_haswell_m_info), \
312 INTEL_VLV_M_IDS(&intel_valleyview_m_info), \
313 INTEL_VLV_D_IDS(&intel_valleyview_d_info), \
314 INTEL_BDW_M_IDS(&intel_broadwell_m_info), \
315 INTEL_BDW_D_IDS(&intel_broadwell_d_info)
317 static const struct pci_device_id pciidlist
[] = { /* aka */
322 #if defined(CONFIG_DRM_I915_KMS)
323 MODULE_DEVICE_TABLE(pci
, pciidlist
);
326 void intel_detect_pch(struct drm_device
*dev
)
328 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
329 struct pci_dev
*pch
= NULL
;
331 /* In all current cases, num_pipes is equivalent to the PCH_NOP setting
332 * (which really amounts to a PCH but no South Display).
334 if (INTEL_INFO(dev
)->num_pipes
== 0) {
335 dev_priv
->pch_type
= PCH_NOP
;
340 * The reason to probe ISA bridge instead of Dev31:Fun0 is to
341 * make graphics device passthrough work easy for VMM, that only
342 * need to expose ISA bridge to let driver know the real hardware
343 * underneath. This is a requirement from virtualization team.
345 * In some virtualized environments (e.g. XEN), there is irrelevant
346 * ISA bridge in the system. To work reliably, we should scan trhough
347 * all the ISA bridge devices and check for the first match, instead
348 * of only checking the first one.
350 while ((pch
= pci_get_class(PCI_CLASS_BRIDGE_ISA
<< 8, pch
))) {
351 if (pch
->vendor
== PCI_VENDOR_ID_INTEL
) {
352 unsigned short id
= pch
->device
& INTEL_PCH_DEVICE_ID_MASK
;
353 dev_priv
->pch_id
= id
;
355 if (id
== INTEL_PCH_IBX_DEVICE_ID_TYPE
) {
356 dev_priv
->pch_type
= PCH_IBX
;
357 DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
358 WARN_ON(!IS_GEN5(dev
));
359 } else if (id
== INTEL_PCH_CPT_DEVICE_ID_TYPE
) {
360 dev_priv
->pch_type
= PCH_CPT
;
361 DRM_DEBUG_KMS("Found CougarPoint PCH\n");
362 WARN_ON(!(IS_GEN6(dev
) || IS_IVYBRIDGE(dev
)));
363 } else if (id
== INTEL_PCH_PPT_DEVICE_ID_TYPE
) {
364 /* PantherPoint is CPT compatible */
365 dev_priv
->pch_type
= PCH_CPT
;
366 DRM_DEBUG_KMS("Found PantherPoint PCH\n");
367 WARN_ON(!(IS_GEN6(dev
) || IS_IVYBRIDGE(dev
)));
368 } else if (id
== INTEL_PCH_LPT_DEVICE_ID_TYPE
) {
369 dev_priv
->pch_type
= PCH_LPT
;
370 DRM_DEBUG_KMS("Found LynxPoint PCH\n");
371 WARN_ON(!IS_HASWELL(dev
));
372 WARN_ON(IS_ULT(dev
));
373 } else if (IS_BROADWELL(dev
)) {
374 dev_priv
->pch_type
= PCH_LPT
;
376 INTEL_PCH_LPT_LP_DEVICE_ID_TYPE
;
377 DRM_DEBUG_KMS("This is Broadwell, assuming "
378 "LynxPoint LP PCH\n");
379 } else if (id
== INTEL_PCH_LPT_LP_DEVICE_ID_TYPE
) {
380 dev_priv
->pch_type
= PCH_LPT
;
381 DRM_DEBUG_KMS("Found LynxPoint LP PCH\n");
382 WARN_ON(!IS_HASWELL(dev
));
383 WARN_ON(!IS_ULT(dev
));
391 DRM_DEBUG_KMS("No PCH found.\n");
396 bool i915_semaphore_is_enabled(struct drm_device
*dev
)
398 if (INTEL_INFO(dev
)->gen
< 6)
401 if (i915
.semaphores
>= 0)
402 return i915
.semaphores
;
404 /* Until we get further testing... */
408 #ifdef CONFIG_INTEL_IOMMU
409 /* Enable semaphores on SNB when IO remapping is off */
410 if (INTEL_INFO(dev
)->gen
== 6 && intel_iommu_gfx_mapped
)
417 static int i915_drm_freeze(struct drm_device
*dev
)
419 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
420 struct drm_crtc
*crtc
;
422 intel_runtime_pm_get(dev_priv
);
424 /* ignore lid events during suspend */
425 mutex_lock(&dev_priv
->modeset_restore_lock
);
426 dev_priv
->modeset_restore
= MODESET_SUSPENDED
;
427 mutex_unlock(&dev_priv
->modeset_restore_lock
);
429 /* We do a lot of poking in a lot of registers, make sure they work
431 hsw_disable_package_c8(dev_priv
);
432 intel_display_set_init_power(dev_priv
, true);
434 drm_kms_helper_poll_disable(dev
);
436 pci_save_state(dev
->pdev
);
438 /* If KMS is active, we do the leavevt stuff here */
439 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
442 error
= i915_gem_suspend(dev
);
444 dev_err(&dev
->pdev
->dev
,
445 "GEM idle failed, resume might fail\n");
449 cancel_delayed_work_sync(&dev_priv
->rps
.delayed_resume_work
);
451 drm_irq_uninstall(dev
);
452 dev_priv
->enable_hotplug_processing
= false;
454 * Disable CRTCs directly since we want to preserve sw state
457 mutex_lock(&dev
->mode_config
.mutex
);
458 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
)
459 dev_priv
->display
.crtc_disable(crtc
);
460 mutex_unlock(&dev
->mode_config
.mutex
);
462 intel_modeset_suspend_hw(dev
);
465 i915_gem_suspend_gtt_mappings(dev
);
467 i915_save_state(dev
);
469 intel_opregion_fini(dev
);
472 intel_fbdev_set_suspend(dev
, FBINFO_STATE_SUSPENDED
);
475 dev_priv
->suspend_count
++;
480 int i915_suspend(struct drm_device
*dev
, pm_message_t state
)
484 if (!dev
|| !dev
->dev_private
) {
485 DRM_ERROR("dev: %p\n", dev
);
486 DRM_ERROR("DRM not initialized, aborting suspend.\n");
490 if (state
.event
== PM_EVENT_PRETHAW
)
494 if (dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
497 error
= i915_drm_freeze(dev
);
501 if (state
.event
== PM_EVENT_SUSPEND
) {
502 /* Shut down the device */
503 pci_disable_device(dev
->pdev
);
504 pci_set_power_state(dev
->pdev
, PCI_D3hot
);
510 void intel_console_resume(struct work_struct
*work
)
512 struct drm_i915_private
*dev_priv
=
513 container_of(work
, struct drm_i915_private
,
514 console_resume_work
);
515 struct drm_device
*dev
= dev_priv
->dev
;
518 intel_fbdev_set_suspend(dev
, FBINFO_STATE_RUNNING
);
522 static void intel_resume_hotplug(struct drm_device
*dev
)
524 struct drm_mode_config
*mode_config
= &dev
->mode_config
;
525 struct intel_encoder
*encoder
;
527 mutex_lock(&mode_config
->mutex
);
528 DRM_DEBUG_KMS("running encoder hotplug functions\n");
530 list_for_each_entry(encoder
, &mode_config
->encoder_list
, base
.head
)
531 if (encoder
->hot_plug
)
532 encoder
->hot_plug(encoder
);
534 mutex_unlock(&mode_config
->mutex
);
536 /* Just fire off a uevent and let userspace tell us what to do */
537 drm_helper_hpd_irq_event(dev
);
540 static int __i915_drm_thaw(struct drm_device
*dev
, bool restore_gtt_mappings
)
542 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
545 intel_uncore_early_sanitize(dev
);
547 intel_uncore_sanitize(dev
);
549 if (drm_core_check_feature(dev
, DRIVER_MODESET
) &&
550 restore_gtt_mappings
) {
551 mutex_lock(&dev
->struct_mutex
);
552 i915_gem_restore_gtt_mappings(dev
);
553 mutex_unlock(&dev
->struct_mutex
);
556 intel_power_domains_init_hw(dev_priv
);
558 i915_restore_state(dev
);
559 intel_opregion_setup(dev
);
561 /* KMS EnterVT equivalent */
562 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
563 intel_init_pch_refclk(dev
);
564 drm_mode_config_reset(dev
);
566 mutex_lock(&dev
->struct_mutex
);
568 error
= i915_gem_init_hw(dev
);
569 mutex_unlock(&dev
->struct_mutex
);
571 /* We need working interrupts for modeset enabling ... */
572 drm_irq_install(dev
);
574 intel_modeset_init_hw(dev
);
576 drm_modeset_lock_all(dev
);
577 intel_modeset_setup_hw_state(dev
, true);
578 drm_modeset_unlock_all(dev
);
581 * ... but also need to make sure that hotplug processing
582 * doesn't cause havoc. Like in the driver load code we don't
583 * bother with the tiny race here where we might loose hotplug
587 dev_priv
->enable_hotplug_processing
= true;
588 /* Config may have changed between suspend and resume */
589 intel_resume_hotplug(dev
);
592 intel_opregion_init(dev
);
595 * The console lock can be pretty contented on resume due
596 * to all the printk activity. Try to keep it out of the hot
597 * path of resume if possible.
599 if (console_trylock()) {
600 intel_fbdev_set_suspend(dev
, FBINFO_STATE_RUNNING
);
603 schedule_work(&dev_priv
->console_resume_work
);
606 /* Undo what we did at i915_drm_freeze so the refcount goes back to the
608 hsw_enable_package_c8(dev_priv
);
610 mutex_lock(&dev_priv
->modeset_restore_lock
);
611 dev_priv
->modeset_restore
= MODESET_DONE
;
612 mutex_unlock(&dev_priv
->modeset_restore_lock
);
614 intel_runtime_pm_put(dev_priv
);
618 static int i915_drm_thaw(struct drm_device
*dev
)
620 if (drm_core_check_feature(dev
, DRIVER_MODESET
))
621 i915_check_and_clear_faults(dev
);
623 return __i915_drm_thaw(dev
, true);
626 int i915_resume(struct drm_device
*dev
)
628 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
631 if (dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
634 if (pci_enable_device(dev
->pdev
))
637 pci_set_master(dev
->pdev
);
640 * Platforms with opregion should have sane BIOS, older ones (gen3 and
641 * earlier) need to restore the GTT mappings since the BIOS might clear
642 * all our scratch PTEs.
644 ret
= __i915_drm_thaw(dev
, !dev_priv
->opregion
.header
);
648 drm_kms_helper_poll_enable(dev
);
653 * i915_reset - reset chip after a hang
654 * @dev: drm device to reset
656 * Reset the chip. Useful if a hang is detected. Returns zero on successful
657 * reset or otherwise an error code.
659 * Procedure is fairly simple:
660 * - reset the chip using the reset reg
661 * - re-init context state
662 * - re-init hardware status page
663 * - re-init ring buffer
664 * - re-init interrupt state
667 int i915_reset(struct drm_device
*dev
)
669 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
676 mutex_lock(&dev
->struct_mutex
);
680 simulated
= dev_priv
->gpu_error
.stop_rings
!= 0;
682 ret
= intel_gpu_reset(dev
);
684 /* Also reset the gpu hangman. */
686 DRM_INFO("Simulated gpu hang, resetting stop_rings\n");
687 dev_priv
->gpu_error
.stop_rings
= 0;
688 if (ret
== -ENODEV
) {
689 DRM_INFO("Reset not implemented, but ignoring "
690 "error for simulated gpu hangs\n");
696 DRM_ERROR("Failed to reset chip: %i\n", ret
);
697 mutex_unlock(&dev
->struct_mutex
);
701 /* Ok, now get things going again... */
704 * Everything depends on having the GTT running, so we need to start
705 * there. Fortunately we don't need to do this unless we reset the
706 * chip at a PCI level.
708 * Next we need to restore the context, but we don't use those
711 * Ring buffer needs to be re-initialized in the KMS case, or if X
712 * was running at the time of the reset (i.e. we weren't VT
715 if (drm_core_check_feature(dev
, DRIVER_MODESET
) ||
716 !dev_priv
->ums
.mm_suspended
) {
717 dev_priv
->ums
.mm_suspended
= 0;
719 ret
= i915_gem_init_hw(dev
);
720 mutex_unlock(&dev
->struct_mutex
);
722 DRM_ERROR("Failed hw init on reset %d\n", ret
);
726 drm_irq_uninstall(dev
);
727 drm_irq_install(dev
);
729 /* rps/rc6 re-init is necessary to restore state lost after the
730 * reset and the re-install of drm irq. Skip for ironlake per
731 * previous concerns that it doesn't respond well to some forms
732 * of re-init after reset. */
733 if (INTEL_INFO(dev
)->gen
> 5) {
734 mutex_lock(&dev
->struct_mutex
);
735 intel_enable_gt_powersave(dev
);
736 mutex_unlock(&dev
->struct_mutex
);
741 mutex_unlock(&dev
->struct_mutex
);
747 static int i915_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
749 struct intel_device_info
*intel_info
=
750 (struct intel_device_info
*) ent
->driver_data
;
752 if (IS_PRELIMINARY_HW(intel_info
) && !i915
.preliminary_hw_support
) {
753 DRM_INFO("This hardware requires preliminary hardware support.\n"
754 "See CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT, and/or modparam preliminary_hw_support\n");
758 /* Only bind to function 0 of the device. Early generations
759 * used function 1 as a placeholder for multi-head. This causes
760 * us confusion instead, especially on the systems where both
761 * functions have the same PCI-ID!
763 if (PCI_FUNC(pdev
->devfn
))
766 driver
.driver_features
&= ~(DRIVER_USE_AGP
);
768 return drm_get_pci_dev(pdev
, ent
, &driver
);
772 i915_pci_remove(struct pci_dev
*pdev
)
774 struct drm_device
*dev
= pci_get_drvdata(pdev
);
779 static int i915_pm_suspend(struct device
*dev
)
781 struct pci_dev
*pdev
= to_pci_dev(dev
);
782 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
785 if (!drm_dev
|| !drm_dev
->dev_private
) {
786 dev_err(dev
, "DRM not initialized, aborting suspend.\n");
790 if (drm_dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
793 error
= i915_drm_freeze(drm_dev
);
797 pci_disable_device(pdev
);
798 pci_set_power_state(pdev
, PCI_D3hot
);
803 static int i915_pm_resume(struct device
*dev
)
805 struct pci_dev
*pdev
= to_pci_dev(dev
);
806 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
808 return i915_resume(drm_dev
);
811 static int i915_pm_freeze(struct device
*dev
)
813 struct pci_dev
*pdev
= to_pci_dev(dev
);
814 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
816 if (!drm_dev
|| !drm_dev
->dev_private
) {
817 dev_err(dev
, "DRM not initialized, aborting suspend.\n");
821 return i915_drm_freeze(drm_dev
);
824 static int i915_pm_thaw(struct device
*dev
)
826 struct pci_dev
*pdev
= to_pci_dev(dev
);
827 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
829 return i915_drm_thaw(drm_dev
);
832 static int i915_pm_poweroff(struct device
*dev
)
834 struct pci_dev
*pdev
= to_pci_dev(dev
);
835 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
837 return i915_drm_freeze(drm_dev
);
840 static int i915_runtime_suspend(struct device
*device
)
842 struct pci_dev
*pdev
= to_pci_dev(device
);
843 struct drm_device
*dev
= pci_get_drvdata(pdev
);
844 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
846 WARN_ON(!HAS_RUNTIME_PM(dev
));
847 assert_force_wake_inactive(dev_priv
);
849 DRM_DEBUG_KMS("Suspending device\n");
851 i915_gem_release_all_mmaps(dev_priv
);
853 del_timer_sync(&dev_priv
->gpu_error
.hangcheck_timer
);
854 dev_priv
->pm
.suspended
= true;
857 * current versions of firmware which depend on this opregion
858 * notification have repurposed the D1 definition to mean
859 * "runtime suspended" vs. what you would normally expect (D3)
860 * to distinguish it from notifications that might be sent
861 * via the suspend path.
863 intel_opregion_notify_adapter(dev
, PCI_D1
);
868 static int i915_runtime_resume(struct device
*device
)
870 struct pci_dev
*pdev
= to_pci_dev(device
);
871 struct drm_device
*dev
= pci_get_drvdata(pdev
);
872 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
874 WARN_ON(!HAS_RUNTIME_PM(dev
));
876 DRM_DEBUG_KMS("Resuming device\n");
878 intel_opregion_notify_adapter(dev
, PCI_D0
);
879 dev_priv
->pm
.suspended
= false;
884 static const struct dev_pm_ops i915_pm_ops
= {
885 .suspend
= i915_pm_suspend
,
886 .resume
= i915_pm_resume
,
887 .freeze
= i915_pm_freeze
,
888 .thaw
= i915_pm_thaw
,
889 .poweroff
= i915_pm_poweroff
,
890 .restore
= i915_pm_resume
,
891 .runtime_suspend
= i915_runtime_suspend
,
892 .runtime_resume
= i915_runtime_resume
,
895 static const struct vm_operations_struct i915_gem_vm_ops
= {
896 .fault
= i915_gem_fault
,
897 .open
= drm_gem_vm_open
,
898 .close
= drm_gem_vm_close
,
901 static const struct file_operations i915_driver_fops
= {
902 .owner
= THIS_MODULE
,
904 .release
= drm_release
,
905 .unlocked_ioctl
= drm_ioctl
,
906 .mmap
= drm_gem_mmap
,
910 .compat_ioctl
= i915_compat_ioctl
,
912 .llseek
= noop_llseek
,
915 static struct drm_driver driver
= {
916 /* Don't use MTRRs here; the Xserver or userspace app should
917 * deal with them for Intel hardware.
921 DRIVER_HAVE_IRQ
| DRIVER_IRQ_SHARED
| DRIVER_GEM
| DRIVER_PRIME
|
923 .load
= i915_driver_load
,
924 .unload
= i915_driver_unload
,
925 .open
= i915_driver_open
,
926 .lastclose
= i915_driver_lastclose
,
927 .preclose
= i915_driver_preclose
,
928 .postclose
= i915_driver_postclose
,
930 /* Used in place of i915_pm_ops for non-DRIVER_MODESET */
931 .suspend
= i915_suspend
,
932 .resume
= i915_resume
,
934 .device_is_agp
= i915_driver_device_is_agp
,
935 .master_create
= i915_master_create
,
936 .master_destroy
= i915_master_destroy
,
937 #if defined(CONFIG_DEBUG_FS)
938 .debugfs_init
= i915_debugfs_init
,
939 .debugfs_cleanup
= i915_debugfs_cleanup
,
941 .gem_free_object
= i915_gem_free_object
,
942 .gem_vm_ops
= &i915_gem_vm_ops
,
944 .prime_handle_to_fd
= drm_gem_prime_handle_to_fd
,
945 .prime_fd_to_handle
= drm_gem_prime_fd_to_handle
,
946 .gem_prime_export
= i915_gem_prime_export
,
947 .gem_prime_import
= i915_gem_prime_import
,
949 .dumb_create
= i915_gem_dumb_create
,
950 .dumb_map_offset
= i915_gem_mmap_gtt
,
951 .dumb_destroy
= drm_gem_dumb_destroy
,
952 .ioctls
= i915_ioctls
,
953 .fops
= &i915_driver_fops
,
957 .major
= DRIVER_MAJOR
,
958 .minor
= DRIVER_MINOR
,
959 .patchlevel
= DRIVER_PATCHLEVEL
,
962 static struct pci_driver i915_pci_driver
= {
964 .id_table
= pciidlist
,
965 .probe
= i915_pci_probe
,
966 .remove
= i915_pci_remove
,
967 .driver
.pm
= &i915_pm_ops
,
970 static int __init
i915_init(void)
972 driver
.num_ioctls
= i915_max_ioctl
;
975 * If CONFIG_DRM_I915_KMS is set, default to KMS unless
976 * explicitly disabled with the module pararmeter.
978 * Otherwise, just follow the parameter (defaulting to off).
980 * Allow optional vga_text_mode_force boot option to override
981 * the default behavior.
983 #if defined(CONFIG_DRM_I915_KMS)
984 if (i915
.modeset
!= 0)
985 driver
.driver_features
|= DRIVER_MODESET
;
987 if (i915
.modeset
== 1)
988 driver
.driver_features
|= DRIVER_MODESET
;
990 #ifdef CONFIG_VGA_CONSOLE
991 if (vgacon_text_force() && i915
.modeset
== -1)
992 driver
.driver_features
&= ~DRIVER_MODESET
;
995 if (!(driver
.driver_features
& DRIVER_MODESET
)) {
996 driver
.get_vblank_timestamp
= NULL
;
997 #ifndef CONFIG_DRM_I915_UMS
998 /* Silently fail loading to not upset userspace. */
1003 return drm_pci_init(&driver
, &i915_pci_driver
);
1006 static void __exit
i915_exit(void)
1008 #ifndef CONFIG_DRM_I915_UMS
1009 if (!(driver
.driver_features
& DRIVER_MODESET
))
1010 return; /* Never loaded a driver. */
1013 drm_pci_exit(&driver
, &i915_pci_driver
);
1016 module_init(i915_init
);
1017 module_exit(i915_exit
);
1019 MODULE_AUTHOR(DRIVER_AUTHOR
);
1020 MODULE_DESCRIPTION(DRIVER_DESC
);
1021 MODULE_LICENSE("GPL and additional rights");