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 int i915_modeset __read_mostly = -1;
42 module_param_named(modeset, i915_modeset, int, 0400);
43 MODULE_PARM_DESC(modeset,
44 "Use kernel modesetting [KMS] (0=DRM_I915_KMS from .config, "
45 "1=on, -1=force vga console preference [default])");
47 unsigned int i915_fbpercrtc __always_unused = 0;
48 module_param_named(fbpercrtc, i915_fbpercrtc, int, 0400);
50 int i915_panel_ignore_lid __read_mostly = 1;
51 module_param_named(panel_ignore_lid, i915_panel_ignore_lid, int, 0600);
52 MODULE_PARM_DESC(panel_ignore_lid,
53 "Override lid status (0=autodetect, 1=autodetect disabled [default], "
54 "-1=force lid closed, -2=force lid open)");
56 unsigned int i915_powersave __read_mostly = 1;
57 module_param_named(powersave, i915_powersave, int, 0600);
58 MODULE_PARM_DESC(powersave,
59 "Enable powersavings, fbc, downclocking, etc. (default: true)");
61 int i915_semaphores __read_mostly = -1;
62 module_param_named(semaphores, i915_semaphores, int, 0400);
63 MODULE_PARM_DESC(semaphores,
64 "Use semaphores for inter-ring sync (default: -1 (use per-chip defaults))");
66 int i915_enable_rc6 __read_mostly = -1;
67 module_param_named(i915_enable_rc6, i915_enable_rc6, int, 0400);
68 MODULE_PARM_DESC(i915_enable_rc6,
69 "Enable power-saving render C-state 6. "
70 "Different stages can be selected via bitmask values "
71 "(0 = disable; 1 = enable rc6; 2 = enable deep rc6; 4 = enable deepest rc6). "
72 "For example, 3 would enable rc6 and deep rc6, and 7 would enable everything. "
73 "default: -1 (use per-chip default)");
75 int i915_enable_fbc __read_mostly = -1;
76 module_param_named(i915_enable_fbc, i915_enable_fbc, int, 0600);
77 MODULE_PARM_DESC(i915_enable_fbc,
78 "Enable frame buffer compression for power savings "
79 "(default: -1 (use per-chip default))");
81 unsigned int i915_lvds_downclock __read_mostly = 0;
82 module_param_named(lvds_downclock, i915_lvds_downclock, int, 0400);
83 MODULE_PARM_DESC(lvds_downclock,
84 "Use panel (LVDS/eDP) downclocking for power savings "
87 int i915_lvds_channel_mode __read_mostly;
88 module_param_named(lvds_channel_mode, i915_lvds_channel_mode, int, 0600);
89 MODULE_PARM_DESC(lvds_channel_mode,
90 "Specify LVDS channel mode "
91 "(0=probe BIOS [default], 1=single-channel, 2=dual-channel)");
93 int i915_panel_use_ssc __read_mostly = -1;
94 module_param_named(lvds_use_ssc, i915_panel_use_ssc, int, 0600);
95 MODULE_PARM_DESC(lvds_use_ssc,
96 "Use Spread Spectrum Clock with panels [LVDS/eDP] "
97 "(default: auto from VBT)");
99 int i915_vbt_sdvo_panel_type __read_mostly = -1;
100 module_param_named(vbt_sdvo_panel_type, i915_vbt_sdvo_panel_type, int, 0600);
101 MODULE_PARM_DESC(vbt_sdvo_panel_type,
102 "Override/Ignore selection of SDVO panel mode in the VBT "
103 "(-2=ignore, -1=auto [default], index in VBT BIOS table)");
105 static bool i915_try_reset __read_mostly = true;
106 module_param_named(reset, i915_try_reset, bool, 0600);
107 MODULE_PARM_DESC(reset, "Attempt GPU resets (default: true)");
109 bool i915_enable_hangcheck __read_mostly = true;
110 module_param_named(enable_hangcheck, i915_enable_hangcheck, bool, 0644);
111 MODULE_PARM_DESC(enable_hangcheck,
112 "Periodically check GPU activity for detecting hangs. "
113 "WARNING: Disabling this can cause system wide hangs. "
116 int i915_enable_ppgtt __read_mostly = -1;
117 module_param_named(i915_enable_ppgtt, i915_enable_ppgtt, int, 0400);
118 MODULE_PARM_DESC(i915_enable_ppgtt,
119 "Enable PPGTT (default: true)");
121 int i915_enable_psr __read_mostly = 0;
122 module_param_named(enable_psr, i915_enable_psr, int, 0600);
123 MODULE_PARM_DESC(enable_psr, "Enable PSR (default: false)");
125 unsigned int i915_preliminary_hw_support __read_mostly = IS_ENABLED(CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT);
126 module_param_named(preliminary_hw_support, i915_preliminary_hw_support, int, 0600);
127 MODULE_PARM_DESC(preliminary_hw_support,
128 "Enable preliminary hardware support.");
130 int i915_disable_power_well __read_mostly = 1;
131 module_param_named(disable_power_well, i915_disable_power_well, int, 0600);
132 MODULE_PARM_DESC(disable_power_well,
133 "Disable the power well when possible (default: true)");
135 int i915_enable_ips __read_mostly = 1;
136 module_param_named(enable_ips, i915_enable_ips, int, 0600);
137 MODULE_PARM_DESC(enable_ips, "Enable IPS (default: true)");
139 bool i915_fastboot __read_mostly = 0;
140 module_param_named(fastboot, i915_fastboot, bool, 0600);
141 MODULE_PARM_DESC(fastboot, "Try to skip unnecessary mode sets at boot time "
144 int i915_enable_pc8 __read_mostly = 1;
145 module_param_named(enable_pc8, i915_enable_pc8, int, 0600);
146 MODULE_PARM_DESC(enable_pc8, "Enable support for low power package C states (PC8+) (default: true)");
148 int i915_pc8_timeout __read_mostly = 5000;
149 module_param_named(pc8_timeout, i915_pc8_timeout, int, 0600);
150 MODULE_PARM_DESC(pc8_timeout, "Number of msecs of idleness required to enter PC8+ (default: 5000)");
152 bool i915_prefault_disable __read_mostly;
153 module_param_named(prefault_disable, i915_prefault_disable, bool, 0600);
154 MODULE_PARM_DESC(prefault_disable,
155 "Disable page prefaulting for pread/pwrite/reloc (default:false). For developers only.");
157 static struct drm_driver driver;
159 static const struct intel_device_info intel_i830_info = {
160 .gen = 2, .is_mobile = 1, .cursor_needs_physical = 1, .num_pipes = 2,
161 .has_overlay = 1, .overlay_needs_physical = 1,
162 .ring_mask = RENDER_RING,
165 static const struct intel_device_info intel_845g_info = {
166 .gen = 2, .num_pipes = 1,
167 .has_overlay = 1, .overlay_needs_physical = 1,
168 .ring_mask = RENDER_RING,
171 static const struct intel_device_info intel_i85x_info = {
172 .gen = 2, .is_i85x = 1, .is_mobile = 1, .num_pipes = 2,
173 .cursor_needs_physical = 1,
174 .has_overlay = 1, .overlay_needs_physical = 1,
176 .ring_mask = RENDER_RING,
179 static const struct intel_device_info intel_i865g_info = {
180 .gen = 2, .num_pipes = 1,
181 .has_overlay = 1, .overlay_needs_physical = 1,
182 .ring_mask = RENDER_RING,
185 static const struct intel_device_info intel_i915g_info = {
186 .gen = 3, .is_i915g = 1, .cursor_needs_physical = 1, .num_pipes = 2,
187 .has_overlay = 1, .overlay_needs_physical = 1,
188 .ring_mask = RENDER_RING,
190 static const struct intel_device_info intel_i915gm_info = {
191 .gen = 3, .is_mobile = 1, .num_pipes = 2,
192 .cursor_needs_physical = 1,
193 .has_overlay = 1, .overlay_needs_physical = 1,
196 .ring_mask = RENDER_RING,
198 static const struct intel_device_info intel_i945g_info = {
199 .gen = 3, .has_hotplug = 1, .cursor_needs_physical = 1, .num_pipes = 2,
200 .has_overlay = 1, .overlay_needs_physical = 1,
201 .ring_mask = RENDER_RING,
203 static const struct intel_device_info intel_i945gm_info = {
204 .gen = 3, .is_i945gm = 1, .is_mobile = 1, .num_pipes = 2,
205 .has_hotplug = 1, .cursor_needs_physical = 1,
206 .has_overlay = 1, .overlay_needs_physical = 1,
209 .ring_mask = RENDER_RING,
212 static const struct intel_device_info intel_i965g_info = {
213 .gen = 4, .is_broadwater = 1, .num_pipes = 2,
216 .ring_mask = RENDER_RING,
219 static const struct intel_device_info intel_i965gm_info = {
220 .gen = 4, .is_crestline = 1, .num_pipes = 2,
221 .is_mobile = 1, .has_fbc = 1, .has_hotplug = 1,
224 .ring_mask = RENDER_RING,
227 static const struct intel_device_info intel_g33_info = {
228 .gen = 3, .is_g33 = 1, .num_pipes = 2,
229 .need_gfx_hws = 1, .has_hotplug = 1,
231 .ring_mask = RENDER_RING,
234 static const struct intel_device_info intel_g45_info = {
235 .gen = 4, .is_g4x = 1, .need_gfx_hws = 1, .num_pipes = 2,
236 .has_pipe_cxsr = 1, .has_hotplug = 1,
237 .ring_mask = RENDER_RING | BSD_RING,
240 static const struct intel_device_info intel_gm45_info = {
241 .gen = 4, .is_g4x = 1, .num_pipes = 2,
242 .is_mobile = 1, .need_gfx_hws = 1, .has_fbc = 1,
243 .has_pipe_cxsr = 1, .has_hotplug = 1,
245 .ring_mask = RENDER_RING | BSD_RING,
248 static const struct intel_device_info intel_pineview_info = {
249 .gen = 3, .is_g33 = 1, .is_pineview = 1, .is_mobile = 1, .num_pipes = 2,
250 .need_gfx_hws = 1, .has_hotplug = 1,
254 static const struct intel_device_info intel_ironlake_d_info = {
255 .gen = 5, .num_pipes = 2,
256 .need_gfx_hws = 1, .has_hotplug = 1,
257 .ring_mask = RENDER_RING | BSD_RING,
260 static const struct intel_device_info intel_ironlake_m_info = {
261 .gen = 5, .is_mobile = 1, .num_pipes = 2,
262 .need_gfx_hws = 1, .has_hotplug = 1,
264 .ring_mask = RENDER_RING | BSD_RING,
267 static const struct intel_device_info intel_sandybridge_d_info = {
268 .gen = 6, .num_pipes = 2,
269 .need_gfx_hws = 1, .has_hotplug = 1,
271 .ring_mask = RENDER_RING | BSD_RING | BLT_RING,
275 static const struct intel_device_info intel_sandybridge_m_info = {
276 .gen = 6, .is_mobile = 1, .num_pipes = 2,
277 .need_gfx_hws = 1, .has_hotplug = 1,
279 .ring_mask = RENDER_RING | BSD_RING | BLT_RING,
283 #define GEN7_FEATURES \
284 .gen = 7, .num_pipes = 3, \
285 .need_gfx_hws = 1, .has_hotplug = 1, \
287 .ring_mask = RENDER_RING | BSD_RING | BLT_RING, \
290 static const struct intel_device_info intel_ivybridge_d_info = {
295 static const struct intel_device_info intel_ivybridge_m_info = {
301 static const struct intel_device_info intel_ivybridge_q_info = {
304 .num_pipes = 0, /* legal, last one wins */
307 static const struct intel_device_info intel_valleyview_m_info = {
312 .display_mmio_offset = VLV_DISPLAY_BASE,
313 .has_fbc = 0, /* legal, last one wins */
314 .has_llc = 0, /* legal, last one wins */
317 static const struct intel_device_info intel_valleyview_d_info = {
321 .display_mmio_offset = VLV_DISPLAY_BASE,
322 .has_fbc = 0, /* legal, last one wins */
323 .has_llc = 0, /* legal, last one wins */
326 static const struct intel_device_info intel_haswell_d_info = {
331 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
334 static const struct intel_device_info intel_haswell_m_info = {
340 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
343 static const struct intel_device_info intel_broadwell_d_info = {
344 .gen = 8, .num_pipes = 3,
345 .need_gfx_hws = 1, .has_hotplug = 1,
346 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
351 static const struct intel_device_info intel_broadwell_m_info = {
352 .gen = 8, .is_mobile = 1, .num_pipes = 3,
353 .need_gfx_hws = 1, .has_hotplug = 1,
354 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
360 * Make sure any device matches here are from most specific to most
361 * general. For example, since the Quanta match is based on the subsystem
362 * and subvendor IDs, we need it to come before the more general IVB
363 * PCI ID matches, otherwise we'll use the wrong info struct above.
365 #define INTEL_PCI_IDS \
366 INTEL_I830_IDS(&intel_i830_info), \
367 INTEL_I845G_IDS(&intel_845g_info), \
368 INTEL_I85X_IDS(&intel_i85x_info), \
369 INTEL_I865G_IDS(&intel_i865g_info), \
370 INTEL_I915G_IDS(&intel_i915g_info), \
371 INTEL_I915GM_IDS(&intel_i915gm_info), \
372 INTEL_I945G_IDS(&intel_i945g_info), \
373 INTEL_I945GM_IDS(&intel_i945gm_info), \
374 INTEL_I965G_IDS(&intel_i965g_info), \
375 INTEL_G33_IDS(&intel_g33_info), \
376 INTEL_I965GM_IDS(&intel_i965gm_info), \
377 INTEL_GM45_IDS(&intel_gm45_info), \
378 INTEL_G45_IDS(&intel_g45_info), \
379 INTEL_PINEVIEW_IDS(&intel_pineview_info), \
380 INTEL_IRONLAKE_D_IDS(&intel_ironlake_d_info), \
381 INTEL_IRONLAKE_M_IDS(&intel_ironlake_m_info), \
382 INTEL_SNB_D_IDS(&intel_sandybridge_d_info), \
383 INTEL_SNB_M_IDS(&intel_sandybridge_m_info), \
384 INTEL_IVB_Q_IDS(&intel_ivybridge_q_info), /* must be first IVB */ \
385 INTEL_IVB_M_IDS(&intel_ivybridge_m_info), \
386 INTEL_IVB_D_IDS(&intel_ivybridge_d_info), \
387 INTEL_HSW_D_IDS(&intel_haswell_d_info), \
388 INTEL_HSW_M_IDS(&intel_haswell_m_info), \
389 INTEL_VLV_M_IDS(&intel_valleyview_m_info), \
390 INTEL_VLV_D_IDS(&intel_valleyview_d_info), \
391 INTEL_BDW_M_IDS(&intel_broadwell_m_info), \
392 INTEL_BDW_D_IDS(&intel_broadwell_d_info)
394 static const struct pci_device_id pciidlist[] = { /* aka */
399 #if defined(CONFIG_DRM_I915_KMS)
400 MODULE_DEVICE_TABLE(pci, pciidlist);
403 void intel_detect_pch(struct drm_device *dev)
405 struct drm_i915_private *dev_priv = dev->dev_private;
406 struct pci_dev *pch = NULL;
408 /* In all current cases, num_pipes is equivalent to the PCH_NOP setting
409 * (which really amounts to a PCH but no South Display).
411 if (INTEL_INFO(dev)->num_pipes == 0) {
412 dev_priv->pch_type = PCH_NOP;
417 * The reason to probe ISA bridge instead of Dev31:Fun0 is to
418 * make graphics device passthrough work easy for VMM, that only
419 * need to expose ISA bridge to let driver know the real hardware
420 * underneath. This is a requirement from virtualization team.
422 * In some virtualized environments (e.g. XEN), there is irrelevant
423 * ISA bridge in the system. To work reliably, we should scan trhough
424 * all the ISA bridge devices and check for the first match, instead
425 * of only checking the first one.
427 while ((pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, pch))) {
428 if (pch->vendor == PCI_VENDOR_ID_INTEL) {
429 unsigned short id = pch->device & INTEL_PCH_DEVICE_ID_MASK;
430 dev_priv->pch_id = id;
432 if (id == INTEL_PCH_IBX_DEVICE_ID_TYPE) {
433 dev_priv->pch_type = PCH_IBX;
434 DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
435 WARN_ON(!IS_GEN5(dev));
436 } else if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) {
437 dev_priv->pch_type = PCH_CPT;
438 DRM_DEBUG_KMS("Found CougarPoint PCH\n");
439 WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev)));
440 } else if (id == INTEL_PCH_PPT_DEVICE_ID_TYPE) {
441 /* PantherPoint is CPT compatible */
442 dev_priv->pch_type = PCH_CPT;
443 DRM_DEBUG_KMS("Found PantherPoint PCH\n");
444 WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev)));
445 } else if (id == INTEL_PCH_LPT_DEVICE_ID_TYPE) {
446 dev_priv->pch_type = PCH_LPT;
447 DRM_DEBUG_KMS("Found LynxPoint PCH\n");
448 WARN_ON(!IS_HASWELL(dev));
449 WARN_ON(IS_ULT(dev));
450 } else if (IS_BROADWELL(dev)) {
451 dev_priv->pch_type = PCH_LPT;
453 INTEL_PCH_LPT_LP_DEVICE_ID_TYPE;
454 DRM_DEBUG_KMS("This is Broadwell, assuming "
455 "LynxPoint LP PCH\n");
456 } else if (id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
457 dev_priv->pch_type = PCH_LPT;
458 DRM_DEBUG_KMS("Found LynxPoint LP PCH\n");
459 WARN_ON(!IS_HASWELL(dev));
460 WARN_ON(!IS_ULT(dev));
468 DRM_DEBUG_KMS("No PCH found.\n");
473 bool i915_semaphore_is_enabled(struct drm_device *dev)
475 if (INTEL_INFO(dev)->gen < 6)
478 /* Until we get further testing... */
480 WARN_ON(!i915_preliminary_hw_support);
484 if (i915_semaphores >= 0)
485 return i915_semaphores;
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 hsw_disable_package_c8(dev_priv);
511 intel_display_set_init_power(dev, true);
513 drm_kms_helper_poll_disable(dev);
515 pci_save_state(dev->pdev);
517 /* If KMS is active, we do the leavevt stuff here */
518 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
521 error = i915_gem_suspend(dev);
523 dev_err(&dev->pdev->dev,
524 "GEM idle failed, resume might fail\n");
528 cancel_delayed_work_sync(&dev_priv->rps.delayed_resume_work);
530 drm_irq_uninstall(dev);
531 dev_priv->enable_hotplug_processing = false;
533 * Disable CRTCs directly since we want to preserve sw state
536 mutex_lock(&dev->mode_config.mutex);
537 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
538 dev_priv->display.crtc_disable(crtc);
539 mutex_unlock(&dev->mode_config.mutex);
541 intel_modeset_suspend_hw(dev);
544 i915_gem_suspend_gtt_mappings(dev);
546 i915_save_state(dev);
548 intel_opregion_fini(dev);
551 intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED);
557 int i915_suspend(struct drm_device *dev, pm_message_t state)
561 if (!dev || !dev->dev_private) {
562 DRM_ERROR("dev: %p\n", dev);
563 DRM_ERROR("DRM not initialized, aborting suspend.\n");
567 if (state.event == PM_EVENT_PRETHAW)
571 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
574 error = i915_drm_freeze(dev);
578 if (state.event == PM_EVENT_SUSPEND) {
579 /* Shut down the device */
580 pci_disable_device(dev->pdev);
581 pci_set_power_state(dev->pdev, PCI_D3hot);
587 void intel_console_resume(struct work_struct *work)
589 struct drm_i915_private *dev_priv =
590 container_of(work, struct drm_i915_private,
591 console_resume_work);
592 struct drm_device *dev = dev_priv->dev;
595 intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING);
599 static void intel_resume_hotplug(struct drm_device *dev)
601 struct drm_mode_config *mode_config = &dev->mode_config;
602 struct intel_encoder *encoder;
604 mutex_lock(&mode_config->mutex);
605 DRM_DEBUG_KMS("running encoder hotplug functions\n");
607 list_for_each_entry(encoder, &mode_config->encoder_list, base.head)
608 if (encoder->hot_plug)
609 encoder->hot_plug(encoder);
611 mutex_unlock(&mode_config->mutex);
613 /* Just fire off a uevent and let userspace tell us what to do */
614 drm_helper_hpd_irq_event(dev);
617 static int __i915_drm_thaw(struct drm_device *dev, bool restore_gtt_mappings)
619 struct drm_i915_private *dev_priv = dev->dev_private;
622 intel_uncore_early_sanitize(dev);
624 intel_uncore_sanitize(dev);
626 if (drm_core_check_feature(dev, DRIVER_MODESET) &&
627 restore_gtt_mappings) {
628 mutex_lock(&dev->struct_mutex);
629 i915_gem_restore_gtt_mappings(dev);
630 mutex_unlock(&dev->struct_mutex);
633 intel_power_domains_init_hw(dev);
635 i915_restore_state(dev);
636 intel_opregion_setup(dev);
638 /* KMS EnterVT equivalent */
639 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
640 intel_init_pch_refclk(dev);
642 mutex_lock(&dev->struct_mutex);
644 error = i915_gem_init_hw(dev);
645 mutex_unlock(&dev->struct_mutex);
647 /* We need working interrupts for modeset enabling ... */
648 drm_irq_install(dev);
650 intel_modeset_init_hw(dev);
652 drm_modeset_lock_all(dev);
653 drm_mode_config_reset(dev);
654 intel_modeset_setup_hw_state(dev, true);
655 drm_modeset_unlock_all(dev);
658 * ... but also need to make sure that hotplug processing
659 * doesn't cause havoc. Like in the driver load code we don't
660 * bother with the tiny race here where we might loose hotplug
664 dev_priv->enable_hotplug_processing = true;
665 /* Config may have changed between suspend and resume */
666 intel_resume_hotplug(dev);
669 intel_opregion_init(dev);
672 * The console lock can be pretty contented on resume due
673 * to all the printk activity. Try to keep it out of the hot
674 * path of resume if possible.
676 if (console_trylock()) {
677 intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING);
680 schedule_work(&dev_priv->console_resume_work);
683 /* Undo what we did at i915_drm_freeze so the refcount goes back to the
685 hsw_enable_package_c8(dev_priv);
687 mutex_lock(&dev_priv->modeset_restore_lock);
688 dev_priv->modeset_restore = MODESET_DONE;
689 mutex_unlock(&dev_priv->modeset_restore_lock);
691 intel_runtime_pm_put(dev_priv);
695 static int i915_drm_thaw(struct drm_device *dev)
697 if (drm_core_check_feature(dev, DRIVER_MODESET))
698 i915_check_and_clear_faults(dev);
700 return __i915_drm_thaw(dev, true);
703 int i915_resume(struct drm_device *dev)
705 struct drm_i915_private *dev_priv = dev->dev_private;
708 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
711 if (pci_enable_device(dev->pdev))
714 pci_set_master(dev->pdev);
717 * Platforms with opregion should have sane BIOS, older ones (gen3 and
718 * earlier) need to restore the GTT mappings since the BIOS might clear
719 * all our scratch PTEs.
721 ret = __i915_drm_thaw(dev, !dev_priv->opregion.header);
725 drm_kms_helper_poll_enable(dev);
730 * i915_reset - reset chip after a hang
731 * @dev: drm device to reset
733 * Reset the chip. Useful if a hang is detected. Returns zero on successful
734 * reset or otherwise an error code.
736 * Procedure is fairly simple:
737 * - reset the chip using the reset reg
738 * - re-init context state
739 * - re-init hardware status page
740 * - re-init ring buffer
741 * - re-init interrupt state
744 int i915_reset(struct drm_device *dev)
746 drm_i915_private_t *dev_priv = dev->dev_private;
753 mutex_lock(&dev->struct_mutex);
757 simulated = dev_priv->gpu_error.stop_rings != 0;
759 ret = intel_gpu_reset(dev);
761 /* Also reset the gpu hangman. */
763 DRM_INFO("Simulated gpu hang, resetting stop_rings\n");
764 dev_priv->gpu_error.stop_rings = 0;
765 if (ret == -ENODEV) {
766 DRM_INFO("Reset not implemented, but ignoring "
767 "error for simulated gpu hangs\n");
773 DRM_ERROR("Failed to reset chip: %i\n", ret);
774 mutex_unlock(&dev->struct_mutex);
778 /* Ok, now get things going again... */
781 * Everything depends on having the GTT running, so we need to start
782 * there. Fortunately we don't need to do this unless we reset the
783 * chip at a PCI level.
785 * Next we need to restore the context, but we don't use those
788 * Ring buffer needs to be re-initialized in the KMS case, or if X
789 * was running at the time of the reset (i.e. we weren't VT
792 if (drm_core_check_feature(dev, DRIVER_MODESET) ||
793 !dev_priv->ums.mm_suspended) {
794 dev_priv->ums.mm_suspended = 0;
796 ret = i915_gem_init_hw(dev);
797 mutex_unlock(&dev->struct_mutex);
799 DRM_ERROR("Failed hw init on reset %d\n", ret);
803 drm_irq_uninstall(dev);
804 drm_irq_install(dev);
807 mutex_unlock(&dev->struct_mutex);
813 static int i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
815 struct intel_device_info *intel_info =
816 (struct intel_device_info *) ent->driver_data;
818 if (IS_PRELIMINARY_HW(intel_info) && !i915_preliminary_hw_support) {
819 DRM_INFO("This hardware requires preliminary hardware support.\n"
820 "See CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT, and/or modparam preliminary_hw_support\n");
824 /* Only bind to function 0 of the device. Early generations
825 * used function 1 as a placeholder for multi-head. This causes
826 * us confusion instead, especially on the systems where both
827 * functions have the same PCI-ID!
829 if (PCI_FUNC(pdev->devfn))
832 driver.driver_features &= ~(DRIVER_USE_AGP);
834 return drm_get_pci_dev(pdev, ent, &driver);
838 i915_pci_remove(struct pci_dev *pdev)
840 struct drm_device *dev = pci_get_drvdata(pdev);
845 static int i915_pm_suspend(struct device *dev)
847 struct pci_dev *pdev = to_pci_dev(dev);
848 struct drm_device *drm_dev = pci_get_drvdata(pdev);
851 if (!drm_dev || !drm_dev->dev_private) {
852 dev_err(dev, "DRM not initialized, aborting suspend.\n");
856 if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
859 error = i915_drm_freeze(drm_dev);
863 pci_disable_device(pdev);
864 pci_set_power_state(pdev, PCI_D3hot);
869 static int i915_pm_resume(struct device *dev)
871 struct pci_dev *pdev = to_pci_dev(dev);
872 struct drm_device *drm_dev = pci_get_drvdata(pdev);
874 return i915_resume(drm_dev);
877 static int i915_pm_freeze(struct device *dev)
879 struct pci_dev *pdev = to_pci_dev(dev);
880 struct drm_device *drm_dev = pci_get_drvdata(pdev);
882 if (!drm_dev || !drm_dev->dev_private) {
883 dev_err(dev, "DRM not initialized, aborting suspend.\n");
887 return i915_drm_freeze(drm_dev);
890 static int i915_pm_thaw(struct device *dev)
892 struct pci_dev *pdev = to_pci_dev(dev);
893 struct drm_device *drm_dev = pci_get_drvdata(pdev);
895 return i915_drm_thaw(drm_dev);
898 static int i915_pm_poweroff(struct device *dev)
900 struct pci_dev *pdev = to_pci_dev(dev);
901 struct drm_device *drm_dev = pci_get_drvdata(pdev);
903 return i915_drm_freeze(drm_dev);
906 static int i915_runtime_suspend(struct device *device)
908 struct pci_dev *pdev = to_pci_dev(device);
909 struct drm_device *dev = pci_get_drvdata(pdev);
910 struct drm_i915_private *dev_priv = dev->dev_private;
912 WARN_ON(!HAS_RUNTIME_PM(dev));
914 DRM_DEBUG_KMS("Suspending device\n");
916 i915_gem_release_all_mmaps(dev_priv);
918 del_timer_sync(&dev_priv->gpu_error.hangcheck_timer);
919 dev_priv->pm.suspended = true;
922 * current versions of firmware which depend on this opregion
923 * notification have repurposed the D1 definition to mean
924 * "runtime suspended" vs. what you would normally expect (D3)
925 * to distinguish it from notifications that might be sent
926 * via the suspend path.
928 intel_opregion_notify_adapter(dev, PCI_D1);
933 static int i915_runtime_resume(struct device *device)
935 struct pci_dev *pdev = to_pci_dev(device);
936 struct drm_device *dev = pci_get_drvdata(pdev);
937 struct drm_i915_private *dev_priv = dev->dev_private;
939 WARN_ON(!HAS_RUNTIME_PM(dev));
941 DRM_DEBUG_KMS("Resuming device\n");
943 intel_opregion_notify_adapter(dev, PCI_D0);
944 dev_priv->pm.suspended = false;
949 static const struct dev_pm_ops i915_pm_ops = {
950 .suspend = i915_pm_suspend,
951 .resume = i915_pm_resume,
952 .freeze = i915_pm_freeze,
953 .thaw = i915_pm_thaw,
954 .poweroff = i915_pm_poweroff,
955 .restore = i915_pm_resume,
956 .runtime_suspend = i915_runtime_suspend,
957 .runtime_resume = i915_runtime_resume,
960 static const struct vm_operations_struct i915_gem_vm_ops = {
961 .fault = i915_gem_fault,
962 .open = drm_gem_vm_open,
963 .close = drm_gem_vm_close,
966 static const struct file_operations i915_driver_fops = {
967 .owner = THIS_MODULE,
969 .release = drm_release,
970 .unlocked_ioctl = drm_ioctl,
971 .mmap = drm_gem_mmap,
975 .compat_ioctl = i915_compat_ioctl,
977 .llseek = noop_llseek,
980 static struct drm_driver driver = {
981 /* Don't use MTRRs here; the Xserver or userspace app should
982 * deal with them for Intel hardware.
986 DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM | DRIVER_PRIME |
988 .load = i915_driver_load,
989 .unload = i915_driver_unload,
990 .open = i915_driver_open,
991 .lastclose = i915_driver_lastclose,
992 .preclose = i915_driver_preclose,
993 .postclose = i915_driver_postclose,
995 /* Used in place of i915_pm_ops for non-DRIVER_MODESET */
996 .suspend = i915_suspend,
997 .resume = i915_resume,
999 .device_is_agp = i915_driver_device_is_agp,
1000 .master_create = i915_master_create,
1001 .master_destroy = i915_master_destroy,
1002 #if defined(CONFIG_DEBUG_FS)
1003 .debugfs_init = i915_debugfs_init,
1004 .debugfs_cleanup = i915_debugfs_cleanup,
1006 .gem_free_object = i915_gem_free_object,
1007 .gem_vm_ops = &i915_gem_vm_ops,
1009 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
1010 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
1011 .gem_prime_export = i915_gem_prime_export,
1012 .gem_prime_import = i915_gem_prime_import,
1014 .dumb_create = i915_gem_dumb_create,
1015 .dumb_map_offset = i915_gem_mmap_gtt,
1016 .dumb_destroy = drm_gem_dumb_destroy,
1017 .ioctls = i915_ioctls,
1018 .fops = &i915_driver_fops,
1019 .name = DRIVER_NAME,
1020 .desc = DRIVER_DESC,
1021 .date = DRIVER_DATE,
1022 .major = DRIVER_MAJOR,
1023 .minor = DRIVER_MINOR,
1024 .patchlevel = DRIVER_PATCHLEVEL,
1027 static struct pci_driver i915_pci_driver = {
1028 .name = DRIVER_NAME,
1029 .id_table = pciidlist,
1030 .probe = i915_pci_probe,
1031 .remove = i915_pci_remove,
1032 .driver.pm = &i915_pm_ops,
1035 static int __init i915_init(void)
1037 driver.num_ioctls = i915_max_ioctl;
1040 * If CONFIG_DRM_I915_KMS is set, default to KMS unless
1041 * explicitly disabled with the module pararmeter.
1043 * Otherwise, just follow the parameter (defaulting to off).
1045 * Allow optional vga_text_mode_force boot option to override
1046 * the default behavior.
1048 #if defined(CONFIG_DRM_I915_KMS)
1049 if (i915_modeset != 0)
1050 driver.driver_features |= DRIVER_MODESET;
1052 if (i915_modeset == 1)
1053 driver.driver_features |= DRIVER_MODESET;
1055 #ifdef CONFIG_VGA_CONSOLE
1056 if (vgacon_text_force() && i915_modeset == -1)
1057 driver.driver_features &= ~DRIVER_MODESET;
1060 if (!(driver.driver_features & DRIVER_MODESET)) {
1061 driver.get_vblank_timestamp = NULL;
1062 #ifndef CONFIG_DRM_I915_UMS
1063 /* Silently fail loading to not upset userspace. */
1068 return drm_pci_init(&driver, &i915_pci_driver);
1071 static void __exit i915_exit(void)
1073 #ifndef CONFIG_DRM_I915_UMS
1074 if (!(driver.driver_features & DRIVER_MODESET))
1075 return; /* Never loaded a driver. */
1078 drm_pci_exit(&driver, &i915_pci_driver);
1081 module_init(i915_init);
1082 module_exit(i915_exit);
1084 MODULE_AUTHOR(DRIVER_AUTHOR);
1085 MODULE_DESCRIPTION(DRIVER_DESC);
1086 MODULE_LICENSE("GPL and additional rights");