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, 0600);
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 = {
345 .gen = 8, .num_pipes = 3,
346 .need_gfx_hws = 1, .has_hotplug = 1,
347 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
352 static const struct intel_device_info intel_broadwell_m_info = {
354 .gen = 8, .is_mobile = 1, .num_pipes = 3,
355 .need_gfx_hws = 1, .has_hotplug = 1,
356 .ring_mask = RENDER_RING | BSD_RING | BLT_RING | VEBOX_RING,
362 * Make sure any device matches here are from most specific to most
363 * general. For example, since the Quanta match is based on the subsystem
364 * and subvendor IDs, we need it to come before the more general IVB
365 * PCI ID matches, otherwise we'll use the wrong info struct above.
367 #define INTEL_PCI_IDS \
368 INTEL_I830_IDS(&intel_i830_info), \
369 INTEL_I845G_IDS(&intel_845g_info), \
370 INTEL_I85X_IDS(&intel_i85x_info), \
371 INTEL_I865G_IDS(&intel_i865g_info), \
372 INTEL_I915G_IDS(&intel_i915g_info), \
373 INTEL_I915GM_IDS(&intel_i915gm_info), \
374 INTEL_I945G_IDS(&intel_i945g_info), \
375 INTEL_I945GM_IDS(&intel_i945gm_info), \
376 INTEL_I965G_IDS(&intel_i965g_info), \
377 INTEL_G33_IDS(&intel_g33_info), \
378 INTEL_I965GM_IDS(&intel_i965gm_info), \
379 INTEL_GM45_IDS(&intel_gm45_info), \
380 INTEL_G45_IDS(&intel_g45_info), \
381 INTEL_PINEVIEW_IDS(&intel_pineview_info), \
382 INTEL_IRONLAKE_D_IDS(&intel_ironlake_d_info), \
383 INTEL_IRONLAKE_M_IDS(&intel_ironlake_m_info), \
384 INTEL_SNB_D_IDS(&intel_sandybridge_d_info), \
385 INTEL_SNB_M_IDS(&intel_sandybridge_m_info), \
386 INTEL_IVB_Q_IDS(&intel_ivybridge_q_info), /* must be first IVB */ \
387 INTEL_IVB_M_IDS(&intel_ivybridge_m_info), \
388 INTEL_IVB_D_IDS(&intel_ivybridge_d_info), \
389 INTEL_HSW_D_IDS(&intel_haswell_d_info), \
390 INTEL_HSW_M_IDS(&intel_haswell_m_info), \
391 INTEL_VLV_M_IDS(&intel_valleyview_m_info), \
392 INTEL_VLV_D_IDS(&intel_valleyview_d_info), \
393 INTEL_BDW_M_IDS(&intel_broadwell_m_info), \
394 INTEL_BDW_D_IDS(&intel_broadwell_d_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;
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 pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL);
431 struct pci_dev *curr = pch;
432 if (pch->vendor == PCI_VENDOR_ID_INTEL) {
434 id = pch->device & INTEL_PCH_DEVICE_ID_MASK;
435 dev_priv->pch_id = id;
437 if (id == INTEL_PCH_IBX_DEVICE_ID_TYPE) {
438 dev_priv->pch_type = PCH_IBX;
439 DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
440 WARN_ON(!IS_GEN5(dev));
441 } else if (id == INTEL_PCH_CPT_DEVICE_ID_TYPE) {
442 dev_priv->pch_type = PCH_CPT;
443 DRM_DEBUG_KMS("Found CougarPoint PCH\n");
444 WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev)));
445 } else if (id == INTEL_PCH_PPT_DEVICE_ID_TYPE) {
446 /* PantherPoint is CPT compatible */
447 dev_priv->pch_type = PCH_CPT;
448 DRM_DEBUG_KMS("Found PantherPoint PCH\n");
449 WARN_ON(!(IS_GEN6(dev) || IS_IVYBRIDGE(dev)));
450 } else if (id == INTEL_PCH_LPT_DEVICE_ID_TYPE) {
451 dev_priv->pch_type = PCH_LPT;
452 DRM_DEBUG_KMS("Found LynxPoint PCH\n");
453 WARN_ON(!IS_HASWELL(dev));
454 WARN_ON(IS_ULT(dev));
455 } else if (IS_BROADWELL(dev)) {
456 dev_priv->pch_type = PCH_LPT;
458 INTEL_PCH_LPT_LP_DEVICE_ID_TYPE;
459 DRM_DEBUG_KMS("This is Broadwell, assuming "
460 "LynxPoint LP PCH\n");
461 } else if (id == INTEL_PCH_LPT_LP_DEVICE_ID_TYPE) {
462 dev_priv->pch_type = PCH_LPT;
463 DRM_DEBUG_KMS("Found LynxPoint LP PCH\n");
464 WARN_ON(!IS_HASWELL(dev));
465 WARN_ON(!IS_ULT(dev));
473 pch = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, curr);
477 DRM_DEBUG_KMS("No PCH found?\n");
480 bool i915_semaphore_is_enabled(struct drm_device *dev)
482 if (INTEL_INFO(dev)->gen < 6)
485 /* Until we get further testing... */
487 WARN_ON(!i915_preliminary_hw_support);
491 if (i915_semaphores >= 0)
492 return i915_semaphores;
494 #ifdef CONFIG_INTEL_IOMMU
495 /* Enable semaphores on SNB when IO remapping is off */
496 if (INTEL_INFO(dev)->gen == 6 && intel_iommu_gfx_mapped)
503 static int i915_drm_freeze(struct drm_device *dev)
505 struct drm_i915_private *dev_priv = dev->dev_private;
506 struct drm_crtc *crtc;
508 intel_runtime_pm_get(dev_priv);
510 /* ignore lid events during suspend */
511 mutex_lock(&dev_priv->modeset_restore_lock);
512 dev_priv->modeset_restore = MODESET_SUSPENDED;
513 mutex_unlock(&dev_priv->modeset_restore_lock);
515 /* We do a lot of poking in a lot of registers, make sure they work
517 hsw_disable_package_c8(dev_priv);
518 intel_display_set_init_power(dev, true);
520 drm_kms_helper_poll_disable(dev);
522 pci_save_state(dev->pdev);
524 /* If KMS is active, we do the leavevt stuff here */
525 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
528 error = i915_gem_suspend(dev);
530 dev_err(&dev->pdev->dev,
531 "GEM idle failed, resume might fail\n");
535 cancel_delayed_work_sync(&dev_priv->rps.delayed_resume_work);
537 drm_irq_uninstall(dev);
538 dev_priv->enable_hotplug_processing = false;
540 * Disable CRTCs directly since we want to preserve sw state
543 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
544 dev_priv->display.crtc_disable(crtc);
546 intel_modeset_suspend_hw(dev);
549 i915_gem_suspend_gtt_mappings(dev);
551 i915_save_state(dev);
553 intel_opregion_fini(dev);
556 intel_fbdev_set_suspend(dev, FBINFO_STATE_SUSPENDED);
562 int i915_suspend(struct drm_device *dev, pm_message_t state)
566 if (!dev || !dev->dev_private) {
567 DRM_ERROR("dev: %p\n", dev);
568 DRM_ERROR("DRM not initialized, aborting suspend.\n");
572 if (state.event == PM_EVENT_PRETHAW)
576 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
579 error = i915_drm_freeze(dev);
583 if (state.event == PM_EVENT_SUSPEND) {
584 /* Shut down the device */
585 pci_disable_device(dev->pdev);
586 pci_set_power_state(dev->pdev, PCI_D3hot);
592 void intel_console_resume(struct work_struct *work)
594 struct drm_i915_private *dev_priv =
595 container_of(work, struct drm_i915_private,
596 console_resume_work);
597 struct drm_device *dev = dev_priv->dev;
600 intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING);
604 static void intel_resume_hotplug(struct drm_device *dev)
606 struct drm_mode_config *mode_config = &dev->mode_config;
607 struct intel_encoder *encoder;
609 mutex_lock(&mode_config->mutex);
610 DRM_DEBUG_KMS("running encoder hotplug functions\n");
612 list_for_each_entry(encoder, &mode_config->encoder_list, base.head)
613 if (encoder->hot_plug)
614 encoder->hot_plug(encoder);
616 mutex_unlock(&mode_config->mutex);
618 /* Just fire off a uevent and let userspace tell us what to do */
619 drm_helper_hpd_irq_event(dev);
622 static int __i915_drm_thaw(struct drm_device *dev, bool restore_gtt_mappings)
624 struct drm_i915_private *dev_priv = dev->dev_private;
627 intel_uncore_early_sanitize(dev);
629 intel_uncore_sanitize(dev);
631 if (drm_core_check_feature(dev, DRIVER_MODESET) &&
632 restore_gtt_mappings) {
633 mutex_lock(&dev->struct_mutex);
634 i915_gem_restore_gtt_mappings(dev);
635 mutex_unlock(&dev->struct_mutex);
638 intel_power_domains_init_hw(dev);
640 i915_restore_state(dev);
641 intel_opregion_setup(dev);
643 /* KMS EnterVT equivalent */
644 if (drm_core_check_feature(dev, DRIVER_MODESET)) {
645 intel_init_pch_refclk(dev);
647 mutex_lock(&dev->struct_mutex);
649 error = i915_gem_init_hw(dev);
650 mutex_unlock(&dev->struct_mutex);
652 /* We need working interrupts for modeset enabling ... */
653 drm_irq_install(dev);
655 intel_modeset_init_hw(dev);
657 drm_modeset_lock_all(dev);
658 intel_modeset_setup_hw_state(dev, true);
659 drm_modeset_unlock_all(dev);
662 * ... but also need to make sure that hotplug processing
663 * doesn't cause havoc. Like in the driver load code we don't
664 * bother with the tiny race here where we might loose hotplug
668 dev_priv->enable_hotplug_processing = true;
669 /* Config may have changed between suspend and resume */
670 intel_resume_hotplug(dev);
673 intel_opregion_init(dev);
676 * The console lock can be pretty contented on resume due
677 * to all the printk activity. Try to keep it out of the hot
678 * path of resume if possible.
680 if (console_trylock()) {
681 intel_fbdev_set_suspend(dev, FBINFO_STATE_RUNNING);
684 schedule_work(&dev_priv->console_resume_work);
687 /* Undo what we did at i915_drm_freeze so the refcount goes back to the
689 hsw_enable_package_c8(dev_priv);
691 mutex_lock(&dev_priv->modeset_restore_lock);
692 dev_priv->modeset_restore = MODESET_DONE;
693 mutex_unlock(&dev_priv->modeset_restore_lock);
695 intel_runtime_pm_put(dev_priv);
699 static int i915_drm_thaw(struct drm_device *dev)
701 if (drm_core_check_feature(dev, DRIVER_MODESET))
702 i915_check_and_clear_faults(dev);
704 return __i915_drm_thaw(dev, true);
707 int i915_resume(struct drm_device *dev)
709 struct drm_i915_private *dev_priv = dev->dev_private;
712 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
715 if (pci_enable_device(dev->pdev))
718 pci_set_master(dev->pdev);
721 * Platforms with opregion should have sane BIOS, older ones (gen3 and
722 * earlier) need to restore the GTT mappings since the BIOS might clear
723 * all our scratch PTEs.
725 ret = __i915_drm_thaw(dev, !dev_priv->opregion.header);
729 drm_kms_helper_poll_enable(dev);
734 * i915_reset - reset chip after a hang
735 * @dev: drm device to reset
737 * Reset the chip. Useful if a hang is detected. Returns zero on successful
738 * reset or otherwise an error code.
740 * Procedure is fairly simple:
741 * - reset the chip using the reset reg
742 * - re-init context state
743 * - re-init hardware status page
744 * - re-init ring buffer
745 * - re-init interrupt state
748 int i915_reset(struct drm_device *dev)
750 drm_i915_private_t *dev_priv = dev->dev_private;
757 mutex_lock(&dev->struct_mutex);
761 simulated = dev_priv->gpu_error.stop_rings != 0;
763 ret = intel_gpu_reset(dev);
765 /* Also reset the gpu hangman. */
767 DRM_INFO("Simulated gpu hang, resetting stop_rings\n");
768 dev_priv->gpu_error.stop_rings = 0;
769 if (ret == -ENODEV) {
770 DRM_INFO("Reset not implemented, but ignoring "
771 "error for simulated gpu hangs\n");
777 DRM_ERROR("Failed to reset chip: %i\n", ret);
778 mutex_unlock(&dev->struct_mutex);
782 /* Ok, now get things going again... */
785 * Everything depends on having the GTT running, so we need to start
786 * there. Fortunately we don't need to do this unless we reset the
787 * chip at a PCI level.
789 * Next we need to restore the context, but we don't use those
792 * Ring buffer needs to be re-initialized in the KMS case, or if X
793 * was running at the time of the reset (i.e. we weren't VT
796 if (drm_core_check_feature(dev, DRIVER_MODESET) ||
797 !dev_priv->ums.mm_suspended) {
798 dev_priv->ums.mm_suspended = 0;
800 ret = i915_gem_init_hw(dev);
801 mutex_unlock(&dev->struct_mutex);
803 DRM_ERROR("Failed hw init on reset %d\n", ret);
807 drm_irq_uninstall(dev);
808 drm_irq_install(dev);
811 mutex_unlock(&dev->struct_mutex);
817 static int i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
819 struct intel_device_info *intel_info =
820 (struct intel_device_info *) ent->driver_data;
822 if (IS_PRELIMINARY_HW(intel_info) && !i915_preliminary_hw_support) {
823 DRM_INFO("This hardware requires preliminary hardware support.\n"
824 "See CONFIG_DRM_I915_PRELIMINARY_HW_SUPPORT, and/or modparam preliminary_hw_support\n");
828 /* Only bind to function 0 of the device. Early generations
829 * used function 1 as a placeholder for multi-head. This causes
830 * us confusion instead, especially on the systems where both
831 * functions have the same PCI-ID!
833 if (PCI_FUNC(pdev->devfn))
836 driver.driver_features &= ~(DRIVER_USE_AGP | DRIVER_REQUIRE_AGP);
838 return drm_get_pci_dev(pdev, ent, &driver);
842 i915_pci_remove(struct pci_dev *pdev)
844 struct drm_device *dev = pci_get_drvdata(pdev);
849 static int i915_pm_suspend(struct device *dev)
851 struct pci_dev *pdev = to_pci_dev(dev);
852 struct drm_device *drm_dev = pci_get_drvdata(pdev);
855 if (!drm_dev || !drm_dev->dev_private) {
856 dev_err(dev, "DRM not initialized, aborting suspend.\n");
860 if (drm_dev->switch_power_state == DRM_SWITCH_POWER_OFF)
863 error = i915_drm_freeze(drm_dev);
867 pci_disable_device(pdev);
868 pci_set_power_state(pdev, PCI_D3hot);
873 static int i915_pm_resume(struct device *dev)
875 struct pci_dev *pdev = to_pci_dev(dev);
876 struct drm_device *drm_dev = pci_get_drvdata(pdev);
878 return i915_resume(drm_dev);
881 static int i915_pm_freeze(struct device *dev)
883 struct pci_dev *pdev = to_pci_dev(dev);
884 struct drm_device *drm_dev = pci_get_drvdata(pdev);
886 if (!drm_dev || !drm_dev->dev_private) {
887 dev_err(dev, "DRM not initialized, aborting suspend.\n");
891 return i915_drm_freeze(drm_dev);
894 static int i915_pm_thaw(struct device *dev)
896 struct pci_dev *pdev = to_pci_dev(dev);
897 struct drm_device *drm_dev = pci_get_drvdata(pdev);
899 return i915_drm_thaw(drm_dev);
902 static int i915_pm_poweroff(struct device *dev)
904 struct pci_dev *pdev = to_pci_dev(dev);
905 struct drm_device *drm_dev = pci_get_drvdata(pdev);
907 return i915_drm_freeze(drm_dev);
910 static int i915_runtime_suspend(struct device *device)
912 struct pci_dev *pdev = to_pci_dev(device);
913 struct drm_device *dev = pci_get_drvdata(pdev);
914 struct drm_i915_private *dev_priv = dev->dev_private;
916 WARN_ON(!HAS_RUNTIME_PM(dev));
918 DRM_DEBUG_KMS("Suspending device\n");
920 del_timer_sync(&dev_priv->gpu_error.hangcheck_timer);
921 dev_priv->pm.suspended = true;
922 intel_opregion_notify_adapter(dev, PCI_D3cold);
927 static int i915_runtime_resume(struct device *device)
929 struct pci_dev *pdev = to_pci_dev(device);
930 struct drm_device *dev = pci_get_drvdata(pdev);
931 struct drm_i915_private *dev_priv = dev->dev_private;
933 WARN_ON(!HAS_RUNTIME_PM(dev));
935 DRM_DEBUG_KMS("Resuming device\n");
937 intel_opregion_notify_adapter(dev, PCI_D0);
938 dev_priv->pm.suspended = false;
943 static const struct dev_pm_ops i915_pm_ops = {
944 .suspend = i915_pm_suspend,
945 .resume = i915_pm_resume,
946 .freeze = i915_pm_freeze,
947 .thaw = i915_pm_thaw,
948 .poweroff = i915_pm_poweroff,
949 .restore = i915_pm_resume,
950 .runtime_suspend = i915_runtime_suspend,
951 .runtime_resume = i915_runtime_resume,
954 static const struct vm_operations_struct i915_gem_vm_ops = {
955 .fault = i915_gem_fault,
956 .open = drm_gem_vm_open,
957 .close = drm_gem_vm_close,
960 static const struct file_operations i915_driver_fops = {
961 .owner = THIS_MODULE,
963 .release = drm_release,
964 .unlocked_ioctl = drm_ioctl,
965 .mmap = drm_gem_mmap,
969 .compat_ioctl = i915_compat_ioctl,
971 .llseek = noop_llseek,
974 static struct drm_driver driver = {
975 /* Don't use MTRRs here; the Xserver or userspace app should
976 * deal with them for Intel hardware.
979 DRIVER_USE_AGP | DRIVER_REQUIRE_AGP |
980 DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_GEM | DRIVER_PRIME |
982 .load = i915_driver_load,
983 .unload = i915_driver_unload,
984 .open = i915_driver_open,
985 .lastclose = i915_driver_lastclose,
986 .preclose = i915_driver_preclose,
987 .postclose = i915_driver_postclose,
989 /* Used in place of i915_pm_ops for non-DRIVER_MODESET */
990 .suspend = i915_suspend,
991 .resume = i915_resume,
993 .device_is_agp = i915_driver_device_is_agp,
994 .master_create = i915_master_create,
995 .master_destroy = i915_master_destroy,
996 #if defined(CONFIG_DEBUG_FS)
997 .debugfs_init = i915_debugfs_init,
998 .debugfs_cleanup = i915_debugfs_cleanup,
1000 .gem_free_object = i915_gem_free_object,
1001 .gem_vm_ops = &i915_gem_vm_ops,
1003 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
1004 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
1005 .gem_prime_export = i915_gem_prime_export,
1006 .gem_prime_import = i915_gem_prime_import,
1008 .dumb_create = i915_gem_dumb_create,
1009 .dumb_map_offset = i915_gem_mmap_gtt,
1010 .dumb_destroy = drm_gem_dumb_destroy,
1011 .ioctls = i915_ioctls,
1012 .fops = &i915_driver_fops,
1013 .name = DRIVER_NAME,
1014 .desc = DRIVER_DESC,
1015 .date = DRIVER_DATE,
1016 .major = DRIVER_MAJOR,
1017 .minor = DRIVER_MINOR,
1018 .patchlevel = DRIVER_PATCHLEVEL,
1021 static struct pci_driver i915_pci_driver = {
1022 .name = DRIVER_NAME,
1023 .id_table = pciidlist,
1024 .probe = i915_pci_probe,
1025 .remove = i915_pci_remove,
1026 .driver.pm = &i915_pm_ops,
1029 static int __init i915_init(void)
1031 driver.num_ioctls = i915_max_ioctl;
1034 * If CONFIG_DRM_I915_KMS is set, default to KMS unless
1035 * explicitly disabled with the module pararmeter.
1037 * Otherwise, just follow the parameter (defaulting to off).
1039 * Allow optional vga_text_mode_force boot option to override
1040 * the default behavior.
1042 #if defined(CONFIG_DRM_I915_KMS)
1043 if (i915_modeset != 0)
1044 driver.driver_features |= DRIVER_MODESET;
1046 if (i915_modeset == 1)
1047 driver.driver_features |= DRIVER_MODESET;
1049 #ifdef CONFIG_VGA_CONSOLE
1050 if (vgacon_text_force() && i915_modeset == -1)
1051 driver.driver_features &= ~DRIVER_MODESET;
1054 if (!(driver.driver_features & DRIVER_MODESET)) {
1055 driver.get_vblank_timestamp = NULL;
1056 #ifndef CONFIG_DRM_I915_UMS
1057 /* Silently fail loading to not upset userspace. */
1062 return drm_pci_init(&driver, &i915_pci_driver);
1065 static void __exit i915_exit(void)
1067 #ifndef CONFIG_DRM_I915_UMS
1068 if (!(driver.driver_features & DRIVER_MODESET))
1069 return; /* Never loaded a driver. */
1072 drm_pci_exit(&driver, &i915_pci_driver);
1075 module_init(i915_init);
1076 module_exit(i915_exit);
1078 MODULE_AUTHOR(DRIVER_AUTHOR);
1079 MODULE_DESCRIPTION(DRIVER_DESC);
1080 MODULE_LICENSE("GPL and additional rights");