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>
35 #include "intel_drv.h"
37 #include <linux/console.h>
38 #include <linux/module.h>
39 #include "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
= 0;
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 [default], 1=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, 0600);
118 MODULE_PARM_DESC(i915_enable_ppgtt
,
119 "Enable PPGTT (default: true)");
121 static struct drm_driver driver
;
122 extern int intel_agp_enabled
;
124 #define INTEL_VGA_DEVICE(id, info) { \
125 .class = PCI_BASE_CLASS_DISPLAY << 16, \
126 .class_mask = 0xff0000, \
129 .subvendor = PCI_ANY_ID, \
130 .subdevice = PCI_ANY_ID, \
131 .driver_data = (unsigned long) info }
133 static const struct intel_device_info intel_i830_info
= {
134 .gen
= 2, .is_mobile
= 1, .cursor_needs_physical
= 1,
135 .has_overlay
= 1, .overlay_needs_physical
= 1,
138 static const struct intel_device_info intel_845g_info
= {
140 .has_overlay
= 1, .overlay_needs_physical
= 1,
143 static const struct intel_device_info intel_i85x_info
= {
144 .gen
= 2, .is_i85x
= 1, .is_mobile
= 1,
145 .cursor_needs_physical
= 1,
146 .has_overlay
= 1, .overlay_needs_physical
= 1,
149 static const struct intel_device_info intel_i865g_info
= {
151 .has_overlay
= 1, .overlay_needs_physical
= 1,
154 static const struct intel_device_info intel_i915g_info
= {
155 .gen
= 3, .is_i915g
= 1, .cursor_needs_physical
= 1,
156 .has_overlay
= 1, .overlay_needs_physical
= 1,
158 static const struct intel_device_info intel_i915gm_info
= {
159 .gen
= 3, .is_mobile
= 1,
160 .cursor_needs_physical
= 1,
161 .has_overlay
= 1, .overlay_needs_physical
= 1,
164 static const struct intel_device_info intel_i945g_info
= {
165 .gen
= 3, .has_hotplug
= 1, .cursor_needs_physical
= 1,
166 .has_overlay
= 1, .overlay_needs_physical
= 1,
168 static const struct intel_device_info intel_i945gm_info
= {
169 .gen
= 3, .is_i945gm
= 1, .is_mobile
= 1,
170 .has_hotplug
= 1, .cursor_needs_physical
= 1,
171 .has_overlay
= 1, .overlay_needs_physical
= 1,
175 static const struct intel_device_info intel_i965g_info
= {
176 .gen
= 4, .is_broadwater
= 1,
181 static const struct intel_device_info intel_i965gm_info
= {
182 .gen
= 4, .is_crestline
= 1,
183 .is_mobile
= 1, .has_fbc
= 1, .has_hotplug
= 1,
188 static const struct intel_device_info intel_g33_info
= {
189 .gen
= 3, .is_g33
= 1,
190 .need_gfx_hws
= 1, .has_hotplug
= 1,
194 static const struct intel_device_info intel_g45_info
= {
195 .gen
= 4, .is_g4x
= 1, .need_gfx_hws
= 1,
196 .has_pipe_cxsr
= 1, .has_hotplug
= 1,
200 static const struct intel_device_info intel_gm45_info
= {
201 .gen
= 4, .is_g4x
= 1,
202 .is_mobile
= 1, .need_gfx_hws
= 1, .has_fbc
= 1,
203 .has_pipe_cxsr
= 1, .has_hotplug
= 1,
208 static const struct intel_device_info intel_pineview_info
= {
209 .gen
= 3, .is_g33
= 1, .is_pineview
= 1, .is_mobile
= 1,
210 .need_gfx_hws
= 1, .has_hotplug
= 1,
214 static const struct intel_device_info intel_ironlake_d_info
= {
216 .need_gfx_hws
= 1, .has_hotplug
= 1,
221 static const struct intel_device_info intel_ironlake_m_info
= {
222 .gen
= 5, .is_mobile
= 1,
223 .need_gfx_hws
= 1, .has_hotplug
= 1,
229 static const struct intel_device_info intel_sandybridge_d_info
= {
231 .need_gfx_hws
= 1, .has_hotplug
= 1,
238 static const struct intel_device_info intel_sandybridge_m_info
= {
239 .gen
= 6, .is_mobile
= 1,
240 .need_gfx_hws
= 1, .has_hotplug
= 1,
248 static const struct intel_device_info intel_ivybridge_d_info
= {
249 .is_ivybridge
= 1, .gen
= 7,
250 .need_gfx_hws
= 1, .has_hotplug
= 1,
257 static const struct intel_device_info intel_ivybridge_m_info
= {
258 .is_ivybridge
= 1, .gen
= 7, .is_mobile
= 1,
259 .need_gfx_hws
= 1, .has_hotplug
= 1,
260 .has_fbc
= 0, /* FBC is not enabled on Ivybridge mobile yet */
267 static const struct intel_device_info intel_valleyview_m_info
= {
268 .gen
= 7, .is_mobile
= 1,
269 .need_gfx_hws
= 1, .has_hotplug
= 1,
276 static const struct intel_device_info intel_valleyview_d_info
= {
278 .need_gfx_hws
= 1, .has_hotplug
= 1,
285 static const struct intel_device_info intel_haswell_d_info
= {
286 .is_haswell
= 1, .gen
= 7,
287 .need_gfx_hws
= 1, .has_hotplug
= 1,
294 static const struct intel_device_info intel_haswell_m_info
= {
295 .is_haswell
= 1, .gen
= 7, .is_mobile
= 1,
296 .need_gfx_hws
= 1, .has_hotplug
= 1,
303 static const struct pci_device_id pciidlist
[] = { /* aka */
304 INTEL_VGA_DEVICE(0x3577, &intel_i830_info
), /* I830_M */
305 INTEL_VGA_DEVICE(0x2562, &intel_845g_info
), /* 845_G */
306 INTEL_VGA_DEVICE(0x3582, &intel_i85x_info
), /* I855_GM */
307 INTEL_VGA_DEVICE(0x358e, &intel_i85x_info
),
308 INTEL_VGA_DEVICE(0x2572, &intel_i865g_info
), /* I865_G */
309 INTEL_VGA_DEVICE(0x2582, &intel_i915g_info
), /* I915_G */
310 INTEL_VGA_DEVICE(0x258a, &intel_i915g_info
), /* E7221_G */
311 INTEL_VGA_DEVICE(0x2592, &intel_i915gm_info
), /* I915_GM */
312 INTEL_VGA_DEVICE(0x2772, &intel_i945g_info
), /* I945_G */
313 INTEL_VGA_DEVICE(0x27a2, &intel_i945gm_info
), /* I945_GM */
314 INTEL_VGA_DEVICE(0x27ae, &intel_i945gm_info
), /* I945_GME */
315 INTEL_VGA_DEVICE(0x2972, &intel_i965g_info
), /* I946_GZ */
316 INTEL_VGA_DEVICE(0x2982, &intel_i965g_info
), /* G35_G */
317 INTEL_VGA_DEVICE(0x2992, &intel_i965g_info
), /* I965_Q */
318 INTEL_VGA_DEVICE(0x29a2, &intel_i965g_info
), /* I965_G */
319 INTEL_VGA_DEVICE(0x29b2, &intel_g33_info
), /* Q35_G */
320 INTEL_VGA_DEVICE(0x29c2, &intel_g33_info
), /* G33_G */
321 INTEL_VGA_DEVICE(0x29d2, &intel_g33_info
), /* Q33_G */
322 INTEL_VGA_DEVICE(0x2a02, &intel_i965gm_info
), /* I965_GM */
323 INTEL_VGA_DEVICE(0x2a12, &intel_i965gm_info
), /* I965_GME */
324 INTEL_VGA_DEVICE(0x2a42, &intel_gm45_info
), /* GM45_G */
325 INTEL_VGA_DEVICE(0x2e02, &intel_g45_info
), /* IGD_E_G */
326 INTEL_VGA_DEVICE(0x2e12, &intel_g45_info
), /* Q45_G */
327 INTEL_VGA_DEVICE(0x2e22, &intel_g45_info
), /* G45_G */
328 INTEL_VGA_DEVICE(0x2e32, &intel_g45_info
), /* G41_G */
329 INTEL_VGA_DEVICE(0x2e42, &intel_g45_info
), /* B43_G */
330 INTEL_VGA_DEVICE(0x2e92, &intel_g45_info
), /* B43_G.1 */
331 INTEL_VGA_DEVICE(0xa001, &intel_pineview_info
),
332 INTEL_VGA_DEVICE(0xa011, &intel_pineview_info
),
333 INTEL_VGA_DEVICE(0x0042, &intel_ironlake_d_info
),
334 INTEL_VGA_DEVICE(0x0046, &intel_ironlake_m_info
),
335 INTEL_VGA_DEVICE(0x0102, &intel_sandybridge_d_info
),
336 INTEL_VGA_DEVICE(0x0112, &intel_sandybridge_d_info
),
337 INTEL_VGA_DEVICE(0x0122, &intel_sandybridge_d_info
),
338 INTEL_VGA_DEVICE(0x0106, &intel_sandybridge_m_info
),
339 INTEL_VGA_DEVICE(0x0116, &intel_sandybridge_m_info
),
340 INTEL_VGA_DEVICE(0x0126, &intel_sandybridge_m_info
),
341 INTEL_VGA_DEVICE(0x010A, &intel_sandybridge_d_info
),
342 INTEL_VGA_DEVICE(0x0156, &intel_ivybridge_m_info
), /* GT1 mobile */
343 INTEL_VGA_DEVICE(0x0166, &intel_ivybridge_m_info
), /* GT2 mobile */
344 INTEL_VGA_DEVICE(0x0152, &intel_ivybridge_d_info
), /* GT1 desktop */
345 INTEL_VGA_DEVICE(0x0162, &intel_ivybridge_d_info
), /* GT2 desktop */
346 INTEL_VGA_DEVICE(0x015a, &intel_ivybridge_d_info
), /* GT1 server */
347 INTEL_VGA_DEVICE(0x016a, &intel_ivybridge_d_info
), /* GT2 server */
351 #if defined(CONFIG_DRM_I915_KMS)
352 MODULE_DEVICE_TABLE(pci
, pciidlist
);
355 #define INTEL_PCH_DEVICE_ID_MASK 0xff00
356 #define INTEL_PCH_IBX_DEVICE_ID_TYPE 0x3b00
357 #define INTEL_PCH_CPT_DEVICE_ID_TYPE 0x1c00
358 #define INTEL_PCH_PPT_DEVICE_ID_TYPE 0x1e00
359 #define INTEL_PCH_LPT_DEVICE_ID_TYPE 0x8c00
361 void intel_detect_pch(struct drm_device
*dev
)
363 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
367 * The reason to probe ISA bridge instead of Dev31:Fun0 is to
368 * make graphics device passthrough work easy for VMM, that only
369 * need to expose ISA bridge to let driver know the real hardware
370 * underneath. This is a requirement from virtualization team.
372 pch
= pci_get_class(PCI_CLASS_BRIDGE_ISA
<< 8, NULL
);
374 if (pch
->vendor
== PCI_VENDOR_ID_INTEL
) {
376 id
= pch
->device
& INTEL_PCH_DEVICE_ID_MASK
;
378 if (id
== INTEL_PCH_IBX_DEVICE_ID_TYPE
) {
379 dev_priv
->pch_type
= PCH_IBX
;
380 dev_priv
->num_pch_pll
= 2;
381 DRM_DEBUG_KMS("Found Ibex Peak PCH\n");
382 } else if (id
== INTEL_PCH_CPT_DEVICE_ID_TYPE
) {
383 dev_priv
->pch_type
= PCH_CPT
;
384 dev_priv
->num_pch_pll
= 2;
385 DRM_DEBUG_KMS("Found CougarPoint PCH\n");
386 } else if (id
== INTEL_PCH_PPT_DEVICE_ID_TYPE
) {
387 /* PantherPoint is CPT compatible */
388 dev_priv
->pch_type
= PCH_CPT
;
389 dev_priv
->num_pch_pll
= 2;
390 DRM_DEBUG_KMS("Found PatherPoint PCH\n");
391 } else if (id
== INTEL_PCH_LPT_DEVICE_ID_TYPE
) {
392 dev_priv
->pch_type
= PCH_LPT
;
393 dev_priv
->num_pch_pll
= 0;
394 DRM_DEBUG_KMS("Found LynxPoint PCH\n");
396 BUG_ON(dev_priv
->num_pch_pll
> I915_NUM_PLLS
);
402 bool i915_semaphore_is_enabled(struct drm_device
*dev
)
404 if (INTEL_INFO(dev
)->gen
< 6)
407 if (i915_semaphores
>= 0)
408 return i915_semaphores
;
410 /* Enable semaphores on SNB when IO remapping is off */
411 if (INTEL_INFO(dev
)->gen
== 6)
412 return !intel_iommu_enabled
;
417 void __gen6_gt_force_wake_get(struct drm_i915_private
*dev_priv
)
422 while (count
++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK
) & 1))
425 I915_WRITE_NOTRACE(FORCEWAKE
, 1);
426 POSTING_READ(FORCEWAKE
);
429 while (count
++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK
) & 1) == 0)
433 void __gen6_gt_force_wake_mt_get(struct drm_i915_private
*dev_priv
)
438 while (count
++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_MT_ACK
) & 1))
441 I915_WRITE_NOTRACE(FORCEWAKE_MT
, _MASKED_BIT_ENABLE(1));
442 POSTING_READ(FORCEWAKE_MT
);
445 while (count
++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_MT_ACK
) & 1) == 0)
450 * Generally this is called implicitly by the register read function. However,
451 * if some sequence requires the GT to not power down then this function should
452 * be called at the beginning of the sequence followed by a call to
453 * gen6_gt_force_wake_put() at the end of the sequence.
455 void gen6_gt_force_wake_get(struct drm_i915_private
*dev_priv
)
457 unsigned long irqflags
;
459 spin_lock_irqsave(&dev_priv
->gt_lock
, irqflags
);
460 if (dev_priv
->forcewake_count
++ == 0)
461 dev_priv
->display
.force_wake_get(dev_priv
);
462 spin_unlock_irqrestore(&dev_priv
->gt_lock
, irqflags
);
465 static void gen6_gt_check_fifodbg(struct drm_i915_private
*dev_priv
)
468 gtfifodbg
= I915_READ_NOTRACE(GTFIFODBG
);
469 if (WARN(gtfifodbg
& GT_FIFO_CPU_ERROR_MASK
,
470 "MMIO read or write has been dropped %x\n", gtfifodbg
))
471 I915_WRITE_NOTRACE(GTFIFODBG
, GT_FIFO_CPU_ERROR_MASK
);
474 void __gen6_gt_force_wake_put(struct drm_i915_private
*dev_priv
)
476 I915_WRITE_NOTRACE(FORCEWAKE
, 0);
477 /* The below doubles as a POSTING_READ */
478 gen6_gt_check_fifodbg(dev_priv
);
481 void __gen6_gt_force_wake_mt_put(struct drm_i915_private
*dev_priv
)
483 I915_WRITE_NOTRACE(FORCEWAKE_MT
, _MASKED_BIT_DISABLE(1));
484 /* The below doubles as a POSTING_READ */
485 gen6_gt_check_fifodbg(dev_priv
);
489 * see gen6_gt_force_wake_get()
491 void gen6_gt_force_wake_put(struct drm_i915_private
*dev_priv
)
493 unsigned long irqflags
;
495 spin_lock_irqsave(&dev_priv
->gt_lock
, irqflags
);
496 if (--dev_priv
->forcewake_count
== 0)
497 dev_priv
->display
.force_wake_put(dev_priv
);
498 spin_unlock_irqrestore(&dev_priv
->gt_lock
, irqflags
);
501 int __gen6_gt_wait_for_fifo(struct drm_i915_private
*dev_priv
)
505 if (dev_priv
->gt_fifo_count
< GT_FIFO_NUM_RESERVED_ENTRIES
) {
507 u32 fifo
= I915_READ_NOTRACE(GT_FIFO_FREE_ENTRIES
);
508 while (fifo
<= GT_FIFO_NUM_RESERVED_ENTRIES
&& loop
--) {
510 fifo
= I915_READ_NOTRACE(GT_FIFO_FREE_ENTRIES
);
512 if (WARN_ON(loop
< 0 && fifo
<= GT_FIFO_NUM_RESERVED_ENTRIES
))
514 dev_priv
->gt_fifo_count
= fifo
;
516 dev_priv
->gt_fifo_count
--;
521 void vlv_force_wake_get(struct drm_i915_private
*dev_priv
)
528 if ((I915_READ(0x130094) & 0xa1) == 0xa1)
531 I915_WRITE_NOTRACE(FORCEWAKE_VLV
, 0xffffffff);
532 POSTING_READ(FORCEWAKE_VLV
);
535 while (count
++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK_VLV
) & 1) == 0)
539 void vlv_force_wake_put(struct drm_i915_private
*dev_priv
)
541 I915_WRITE_NOTRACE(FORCEWAKE_VLV
, 0xffff0000);
542 /* FIXME: confirm VLV behavior with Punit folks */
543 POSTING_READ(FORCEWAKE_VLV
);
546 static int i915_drm_freeze(struct drm_device
*dev
)
548 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
550 drm_kms_helper_poll_disable(dev
);
552 pci_save_state(dev
->pdev
);
554 /* If KMS is active, we do the leavevt stuff here */
555 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
556 int error
= i915_gem_idle(dev
);
558 dev_err(&dev
->pdev
->dev
,
559 "GEM idle failed, resume might fail\n");
562 drm_irq_uninstall(dev
);
565 i915_save_state(dev
);
567 intel_opregion_fini(dev
);
569 /* Modeset on resume, not lid events */
570 dev_priv
->modeset_on_lid
= 0;
573 intel_fbdev_set_suspend(dev
, 1);
579 int i915_suspend(struct drm_device
*dev
, pm_message_t state
)
583 if (!dev
|| !dev
->dev_private
) {
584 DRM_ERROR("dev: %p\n", dev
);
585 DRM_ERROR("DRM not initialized, aborting suspend.\n");
589 if (state
.event
== PM_EVENT_PRETHAW
)
593 if (dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
596 error
= i915_drm_freeze(dev
);
600 if (state
.event
== PM_EVENT_SUSPEND
) {
601 /* Shut down the device */
602 pci_disable_device(dev
->pdev
);
603 pci_set_power_state(dev
->pdev
, PCI_D3hot
);
609 static int i915_drm_thaw(struct drm_device
*dev
)
611 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
614 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
615 mutex_lock(&dev
->struct_mutex
);
616 i915_gem_restore_gtt_mappings(dev
);
617 mutex_unlock(&dev
->struct_mutex
);
620 i915_restore_state(dev
);
621 intel_opregion_setup(dev
);
623 /* KMS EnterVT equivalent */
624 if (drm_core_check_feature(dev
, DRIVER_MODESET
)) {
625 mutex_lock(&dev
->struct_mutex
);
626 dev_priv
->mm
.suspended
= 0;
628 error
= i915_gem_init_hw(dev
);
629 mutex_unlock(&dev
->struct_mutex
);
631 if (HAS_PCH_SPLIT(dev
))
632 ironlake_init_pch_refclk(dev
);
634 drm_mode_config_reset(dev
);
635 drm_irq_install(dev
);
637 /* Resume the modeset for every activated CRTC */
638 mutex_lock(&dev
->mode_config
.mutex
);
639 drm_helper_resume_force_mode(dev
);
640 mutex_unlock(&dev
->mode_config
.mutex
);
642 if (IS_IRONLAKE_M(dev
))
643 ironlake_enable_rc6(dev
);
646 intel_opregion_init(dev
);
648 dev_priv
->modeset_on_lid
= 0;
651 intel_fbdev_set_suspend(dev
, 0);
656 int i915_resume(struct drm_device
*dev
)
660 if (dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
663 if (pci_enable_device(dev
->pdev
))
666 pci_set_master(dev
->pdev
);
668 ret
= i915_drm_thaw(dev
);
672 drm_kms_helper_poll_enable(dev
);
676 static int i8xx_do_reset(struct drm_device
*dev
, u8 flags
)
678 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
683 I915_WRITE(D_STATE
, I915_READ(D_STATE
) | DSTATE_GFX_RESET_I830
);
684 POSTING_READ(D_STATE
);
686 if (IS_I830(dev
) || IS_845G(dev
)) {
687 I915_WRITE(DEBUG_RESET_I830
,
688 DEBUG_RESET_DISPLAY
|
691 POSTING_READ(DEBUG_RESET_I830
);
694 I915_WRITE(DEBUG_RESET_I830
, 0);
695 POSTING_READ(DEBUG_RESET_I830
);
700 I915_WRITE(D_STATE
, I915_READ(D_STATE
) & ~DSTATE_GFX_RESET_I830
);
701 POSTING_READ(D_STATE
);
706 static int i965_reset_complete(struct drm_device
*dev
)
709 pci_read_config_byte(dev
->pdev
, I965_GDRST
, &gdrst
);
713 static int i965_do_reset(struct drm_device
*dev
, u8 flags
)
718 * Set the domains we want to reset (GRDOM/bits 2 and 3) as
719 * well as the reset bit (GR/bit 0). Setting the GR bit
720 * triggers the reset; when done, the hardware will clear it.
722 pci_read_config_byte(dev
->pdev
, I965_GDRST
, &gdrst
);
723 pci_write_config_byte(dev
->pdev
, I965_GDRST
, gdrst
| flags
| 0x1);
725 return wait_for(i965_reset_complete(dev
), 500);
728 static int ironlake_do_reset(struct drm_device
*dev
, u8 flags
)
730 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
731 u32 gdrst
= I915_READ(MCHBAR_MIRROR_BASE
+ ILK_GDSR
);
732 I915_WRITE(MCHBAR_MIRROR_BASE
+ ILK_GDSR
, gdrst
| flags
| 0x1);
733 return wait_for(I915_READ(MCHBAR_MIRROR_BASE
+ ILK_GDSR
) & 0x1, 500);
736 static int gen6_do_reset(struct drm_device
*dev
, u8 flags
)
738 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
740 unsigned long irqflags
;
742 /* Hold gt_lock across reset to prevent any register access
743 * with forcewake not set correctly
745 spin_lock_irqsave(&dev_priv
->gt_lock
, irqflags
);
749 /* GEN6_GDRST is not in the gt power well, no need to check
750 * for fifo space for the write or forcewake the chip for
753 I915_WRITE_NOTRACE(GEN6_GDRST
, GEN6_GRDOM_FULL
);
755 /* Spin waiting for the device to ack the reset request */
756 ret
= wait_for((I915_READ_NOTRACE(GEN6_GDRST
) & GEN6_GRDOM_FULL
) == 0, 500);
758 /* If reset with a user forcewake, try to restore, otherwise turn it off */
759 if (dev_priv
->forcewake_count
)
760 dev_priv
->display
.force_wake_get(dev_priv
);
762 dev_priv
->display
.force_wake_put(dev_priv
);
764 /* Restore fifo count */
765 dev_priv
->gt_fifo_count
= I915_READ_NOTRACE(GT_FIFO_FREE_ENTRIES
);
767 spin_unlock_irqrestore(&dev_priv
->gt_lock
, irqflags
);
772 * i915_reset - reset chip after a hang
773 * @dev: drm device to reset
774 * @flags: reset domains
776 * Reset the chip. Useful if a hang is detected. Returns zero on successful
777 * reset or otherwise an error code.
779 * Procedure is fairly simple:
780 * - reset the chip using the reset reg
781 * - re-init context state
782 * - re-init hardware status page
783 * - re-init ring buffer
784 * - re-init interrupt state
787 int i915_reset(struct drm_device
*dev
, u8 flags
)
789 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
791 * We really should only reset the display subsystem if we actually
794 bool need_display
= true;
800 if (!mutex_trylock(&dev
->struct_mutex
))
803 dev_priv
->stop_rings
= 0;
808 if (get_seconds() - dev_priv
->last_gpu_reset
< 5) {
809 DRM_ERROR("GPU hanging too fast, declaring wedged!\n");
810 } else switch (INTEL_INFO(dev
)->gen
) {
813 ret
= gen6_do_reset(dev
, flags
);
816 ret
= ironlake_do_reset(dev
, flags
);
819 ret
= i965_do_reset(dev
, flags
);
822 ret
= i8xx_do_reset(dev
, flags
);
825 dev_priv
->last_gpu_reset
= get_seconds();
827 DRM_ERROR("Failed to reset chip.\n");
828 mutex_unlock(&dev
->struct_mutex
);
832 /* Ok, now get things going again... */
835 * Everything depends on having the GTT running, so we need to start
836 * there. Fortunately we don't need to do this unless we reset the
837 * chip at a PCI level.
839 * Next we need to restore the context, but we don't use those
842 * Ring buffer needs to be re-initialized in the KMS case, or if X
843 * was running at the time of the reset (i.e. we weren't VT
846 if (drm_core_check_feature(dev
, DRIVER_MODESET
) ||
847 !dev_priv
->mm
.suspended
) {
848 dev_priv
->mm
.suspended
= 0;
850 i915_gem_init_swizzling(dev
);
852 dev_priv
->ring
[RCS
].init(&dev_priv
->ring
[RCS
]);
854 dev_priv
->ring
[VCS
].init(&dev_priv
->ring
[VCS
]);
856 dev_priv
->ring
[BCS
].init(&dev_priv
->ring
[BCS
]);
858 i915_gem_init_ppgtt(dev
);
860 mutex_unlock(&dev
->struct_mutex
);
862 if (drm_core_check_feature(dev
, DRIVER_MODESET
))
863 intel_modeset_init_hw(dev
);
865 drm_irq_uninstall(dev
);
866 drm_mode_config_reset(dev
);
867 drm_irq_install(dev
);
869 mutex_lock(&dev
->struct_mutex
);
872 mutex_unlock(&dev
->struct_mutex
);
875 * Perform a full modeset as on later generations, e.g. Ironlake, we may
876 * need to retrain the display link and cannot just restore the register
880 mutex_lock(&dev
->mode_config
.mutex
);
881 drm_helper_resume_force_mode(dev
);
882 mutex_unlock(&dev
->mode_config
.mutex
);
890 i915_pci_probe(struct pci_dev
*pdev
, const struct pci_device_id
*ent
)
892 /* Only bind to function 0 of the device. Early generations
893 * used function 1 as a placeholder for multi-head. This causes
894 * us confusion instead, especially on the systems where both
895 * functions have the same PCI-ID!
897 if (PCI_FUNC(pdev
->devfn
))
900 return drm_get_pci_dev(pdev
, ent
, &driver
);
904 i915_pci_remove(struct pci_dev
*pdev
)
906 struct drm_device
*dev
= pci_get_drvdata(pdev
);
911 static int i915_pm_suspend(struct device
*dev
)
913 struct pci_dev
*pdev
= to_pci_dev(dev
);
914 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
917 if (!drm_dev
|| !drm_dev
->dev_private
) {
918 dev_err(dev
, "DRM not initialized, aborting suspend.\n");
922 if (drm_dev
->switch_power_state
== DRM_SWITCH_POWER_OFF
)
925 error
= i915_drm_freeze(drm_dev
);
929 pci_disable_device(pdev
);
930 pci_set_power_state(pdev
, PCI_D3hot
);
935 static int i915_pm_resume(struct device
*dev
)
937 struct pci_dev
*pdev
= to_pci_dev(dev
);
938 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
940 return i915_resume(drm_dev
);
943 static int i915_pm_freeze(struct device
*dev
)
945 struct pci_dev
*pdev
= to_pci_dev(dev
);
946 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
948 if (!drm_dev
|| !drm_dev
->dev_private
) {
949 dev_err(dev
, "DRM not initialized, aborting suspend.\n");
953 return i915_drm_freeze(drm_dev
);
956 static int i915_pm_thaw(struct device
*dev
)
958 struct pci_dev
*pdev
= to_pci_dev(dev
);
959 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
961 return i915_drm_thaw(drm_dev
);
964 static int i915_pm_poweroff(struct device
*dev
)
966 struct pci_dev
*pdev
= to_pci_dev(dev
);
967 struct drm_device
*drm_dev
= pci_get_drvdata(pdev
);
969 return i915_drm_freeze(drm_dev
);
972 static const struct dev_pm_ops i915_pm_ops
= {
973 .suspend
= i915_pm_suspend
,
974 .resume
= i915_pm_resume
,
975 .freeze
= i915_pm_freeze
,
976 .thaw
= i915_pm_thaw
,
977 .poweroff
= i915_pm_poweroff
,
978 .restore
= i915_pm_resume
,
981 static struct vm_operations_struct i915_gem_vm_ops
= {
982 .fault
= i915_gem_fault
,
983 .open
= drm_gem_vm_open
,
984 .close
= drm_gem_vm_close
,
987 static const struct file_operations i915_driver_fops
= {
988 .owner
= THIS_MODULE
,
990 .release
= drm_release
,
991 .unlocked_ioctl
= drm_ioctl
,
992 .mmap
= drm_gem_mmap
,
994 .fasync
= drm_fasync
,
997 .compat_ioctl
= i915_compat_ioctl
,
999 .llseek
= noop_llseek
,
1002 static struct drm_driver driver
= {
1003 /* Don't use MTRRs here; the Xserver or userspace app should
1004 * deal with them for Intel hardware.
1007 DRIVER_USE_AGP
| DRIVER_REQUIRE_AGP
| /* DRIVER_USE_MTRR |*/
1008 DRIVER_HAVE_IRQ
| DRIVER_IRQ_SHARED
| DRIVER_GEM
,
1009 .load
= i915_driver_load
,
1010 .unload
= i915_driver_unload
,
1011 .open
= i915_driver_open
,
1012 .lastclose
= i915_driver_lastclose
,
1013 .preclose
= i915_driver_preclose
,
1014 .postclose
= i915_driver_postclose
,
1016 /* Used in place of i915_pm_ops for non-DRIVER_MODESET */
1017 .suspend
= i915_suspend
,
1018 .resume
= i915_resume
,
1020 .device_is_agp
= i915_driver_device_is_agp
,
1021 .reclaim_buffers
= drm_core_reclaim_buffers
,
1022 .master_create
= i915_master_create
,
1023 .master_destroy
= i915_master_destroy
,
1024 #if defined(CONFIG_DEBUG_FS)
1025 .debugfs_init
= i915_debugfs_init
,
1026 .debugfs_cleanup
= i915_debugfs_cleanup
,
1028 .gem_init_object
= i915_gem_init_object
,
1029 .gem_free_object
= i915_gem_free_object
,
1030 .gem_vm_ops
= &i915_gem_vm_ops
,
1031 .dumb_create
= i915_gem_dumb_create
,
1032 .dumb_map_offset
= i915_gem_mmap_gtt
,
1033 .dumb_destroy
= i915_gem_dumb_destroy
,
1034 .ioctls
= i915_ioctls
,
1035 .fops
= &i915_driver_fops
,
1036 .name
= DRIVER_NAME
,
1037 .desc
= DRIVER_DESC
,
1038 .date
= DRIVER_DATE
,
1039 .major
= DRIVER_MAJOR
,
1040 .minor
= DRIVER_MINOR
,
1041 .patchlevel
= DRIVER_PATCHLEVEL
,
1044 static struct pci_driver i915_pci_driver
= {
1045 .name
= DRIVER_NAME
,
1046 .id_table
= pciidlist
,
1047 .probe
= i915_pci_probe
,
1048 .remove
= i915_pci_remove
,
1049 .driver
.pm
= &i915_pm_ops
,
1052 static int __init
i915_init(void)
1054 if (!intel_agp_enabled
) {
1055 DRM_ERROR("drm/i915 can't work without intel_agp module!\n");
1059 driver
.num_ioctls
= i915_max_ioctl
;
1062 * If CONFIG_DRM_I915_KMS is set, default to KMS unless
1063 * explicitly disabled with the module pararmeter.
1065 * Otherwise, just follow the parameter (defaulting to off).
1067 * Allow optional vga_text_mode_force boot option to override
1068 * the default behavior.
1070 #if defined(CONFIG_DRM_I915_KMS)
1071 if (i915_modeset
!= 0)
1072 driver
.driver_features
|= DRIVER_MODESET
;
1074 if (i915_modeset
== 1)
1075 driver
.driver_features
|= DRIVER_MODESET
;
1077 #ifdef CONFIG_VGA_CONSOLE
1078 if (vgacon_text_force() && i915_modeset
== -1)
1079 driver
.driver_features
&= ~DRIVER_MODESET
;
1082 if (!(driver
.driver_features
& DRIVER_MODESET
))
1083 driver
.get_vblank_timestamp
= NULL
;
1085 return drm_pci_init(&driver
, &i915_pci_driver
);
1088 static void __exit
i915_exit(void)
1090 drm_pci_exit(&driver
, &i915_pci_driver
);
1093 module_init(i915_init
);
1094 module_exit(i915_exit
);
1096 MODULE_AUTHOR(DRIVER_AUTHOR
);
1097 MODULE_DESCRIPTION(DRIVER_DESC
);
1098 MODULE_LICENSE("GPL and additional rights");
1100 /* We give fast paths for the really cool registers */
1101 #define NEEDS_FORCE_WAKE(dev_priv, reg) \
1102 (((dev_priv)->info->gen >= 6) && \
1103 ((reg) < 0x40000) && \
1104 ((reg) != FORCEWAKE)) && \
1105 (!IS_VALLEYVIEW((dev_priv)->dev))
1107 #define __i915_read(x, y) \
1108 u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg) { \
1110 if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \
1111 unsigned long irqflags; \
1112 spin_lock_irqsave(&dev_priv->gt_lock, irqflags); \
1113 if (dev_priv->forcewake_count == 0) \
1114 dev_priv->display.force_wake_get(dev_priv); \
1115 val = read##y(dev_priv->regs + reg); \
1116 if (dev_priv->forcewake_count == 0) \
1117 dev_priv->display.force_wake_put(dev_priv); \
1118 spin_unlock_irqrestore(&dev_priv->gt_lock, irqflags); \
1120 val = read##y(dev_priv->regs + reg); \
1122 trace_i915_reg_rw(false, reg, val, sizeof(val)); \
1132 #define __i915_write(x, y) \
1133 void i915_write##x(struct drm_i915_private *dev_priv, u32 reg, u##x val) { \
1134 u32 __fifo_ret = 0; \
1135 trace_i915_reg_rw(true, reg, val, sizeof(val)); \
1136 if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \
1137 __fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \
1139 write##y(val, dev_priv->regs + reg); \
1140 if (unlikely(__fifo_ret)) { \
1141 gen6_gt_check_fifodbg(dev_priv); \