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0d6aa60b | 1 | /* i915_irq.c -- IRQ support for the I915 -*- linux-c -*- |
1da177e4 | 2 | */ |
0d6aa60b | 3 | /* |
1da177e4 LT |
4 | * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. |
5 | * All Rights Reserved. | |
bc54fd1a DA |
6 | * |
7 | * Permission is hereby granted, free of charge, to any person obtaining a | |
8 | * copy of this software and associated documentation files (the | |
9 | * "Software"), to deal in the Software without restriction, including | |
10 | * without limitation the rights to use, copy, modify, merge, publish, | |
11 | * distribute, sub license, and/or sell copies of the Software, and to | |
12 | * permit persons to whom the Software is furnished to do so, subject to | |
13 | * the following conditions: | |
14 | * | |
15 | * The above copyright notice and this permission notice (including the | |
16 | * next paragraph) shall be included in all copies or substantial portions | |
17 | * of the Software. | |
18 | * | |
19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
20 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
21 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. | |
22 | * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR | |
23 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, | |
24 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE | |
25 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
26 | * | |
0d6aa60b | 27 | */ |
1da177e4 | 28 | |
a70491cc JP |
29 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
30 | ||
63eeaf38 | 31 | #include <linux/sysrq.h> |
5a0e3ad6 | 32 | #include <linux/slab.h> |
b2c88f5b | 33 | #include <linux/circ_buf.h> |
760285e7 DH |
34 | #include <drm/drmP.h> |
35 | #include <drm/i915_drm.h> | |
1da177e4 | 36 | #include "i915_drv.h" |
1c5d22f7 | 37 | #include "i915_trace.h" |
79e53945 | 38 | #include "intel_drv.h" |
1da177e4 | 39 | |
e5868a31 EE |
40 | static const u32 hpd_ibx[] = { |
41 | [HPD_CRT] = SDE_CRT_HOTPLUG, | |
42 | [HPD_SDVO_B] = SDE_SDVOB_HOTPLUG, | |
43 | [HPD_PORT_B] = SDE_PORTB_HOTPLUG, | |
44 | [HPD_PORT_C] = SDE_PORTC_HOTPLUG, | |
45 | [HPD_PORT_D] = SDE_PORTD_HOTPLUG | |
46 | }; | |
47 | ||
48 | static const u32 hpd_cpt[] = { | |
49 | [HPD_CRT] = SDE_CRT_HOTPLUG_CPT, | |
73c352a2 | 50 | [HPD_SDVO_B] = SDE_SDVOB_HOTPLUG_CPT, |
e5868a31 EE |
51 | [HPD_PORT_B] = SDE_PORTB_HOTPLUG_CPT, |
52 | [HPD_PORT_C] = SDE_PORTC_HOTPLUG_CPT, | |
53 | [HPD_PORT_D] = SDE_PORTD_HOTPLUG_CPT | |
54 | }; | |
55 | ||
56 | static const u32 hpd_mask_i915[] = { | |
57 | [HPD_CRT] = CRT_HOTPLUG_INT_EN, | |
58 | [HPD_SDVO_B] = SDVOB_HOTPLUG_INT_EN, | |
59 | [HPD_SDVO_C] = SDVOC_HOTPLUG_INT_EN, | |
60 | [HPD_PORT_B] = PORTB_HOTPLUG_INT_EN, | |
61 | [HPD_PORT_C] = PORTC_HOTPLUG_INT_EN, | |
62 | [HPD_PORT_D] = PORTD_HOTPLUG_INT_EN | |
63 | }; | |
64 | ||
704cfb87 | 65 | static const u32 hpd_status_g4x[] = { |
e5868a31 EE |
66 | [HPD_CRT] = CRT_HOTPLUG_INT_STATUS, |
67 | [HPD_SDVO_B] = SDVOB_HOTPLUG_INT_STATUS_G4X, | |
68 | [HPD_SDVO_C] = SDVOC_HOTPLUG_INT_STATUS_G4X, | |
69 | [HPD_PORT_B] = PORTB_HOTPLUG_INT_STATUS, | |
70 | [HPD_PORT_C] = PORTC_HOTPLUG_INT_STATUS, | |
71 | [HPD_PORT_D] = PORTD_HOTPLUG_INT_STATUS | |
72 | }; | |
73 | ||
e5868a31 EE |
74 | static const u32 hpd_status_i915[] = { /* i915 and valleyview are the same */ |
75 | [HPD_CRT] = CRT_HOTPLUG_INT_STATUS, | |
76 | [HPD_SDVO_B] = SDVOB_HOTPLUG_INT_STATUS_I915, | |
77 | [HPD_SDVO_C] = SDVOC_HOTPLUG_INT_STATUS_I915, | |
78 | [HPD_PORT_B] = PORTB_HOTPLUG_INT_STATUS, | |
79 | [HPD_PORT_C] = PORTC_HOTPLUG_INT_STATUS, | |
80 | [HPD_PORT_D] = PORTD_HOTPLUG_INT_STATUS | |
81 | }; | |
82 | ||
036a4a7d | 83 | /* For display hotplug interrupt */ |
995b6762 | 84 | static void |
f2b115e6 | 85 | ironlake_enable_display_irq(drm_i915_private_t *dev_priv, u32 mask) |
036a4a7d | 86 | { |
4bc9d430 DV |
87 | assert_spin_locked(&dev_priv->irq_lock); |
88 | ||
c67a470b PZ |
89 | if (dev_priv->pc8.irqs_disabled) { |
90 | WARN(1, "IRQs disabled\n"); | |
91 | dev_priv->pc8.regsave.deimr &= ~mask; | |
92 | return; | |
93 | } | |
94 | ||
1ec14ad3 CW |
95 | if ((dev_priv->irq_mask & mask) != 0) { |
96 | dev_priv->irq_mask &= ~mask; | |
97 | I915_WRITE(DEIMR, dev_priv->irq_mask); | |
3143a2bf | 98 | POSTING_READ(DEIMR); |
036a4a7d ZW |
99 | } |
100 | } | |
101 | ||
0ff9800a | 102 | static void |
f2b115e6 | 103 | ironlake_disable_display_irq(drm_i915_private_t *dev_priv, u32 mask) |
036a4a7d | 104 | { |
4bc9d430 DV |
105 | assert_spin_locked(&dev_priv->irq_lock); |
106 | ||
c67a470b PZ |
107 | if (dev_priv->pc8.irqs_disabled) { |
108 | WARN(1, "IRQs disabled\n"); | |
109 | dev_priv->pc8.regsave.deimr |= mask; | |
110 | return; | |
111 | } | |
112 | ||
1ec14ad3 CW |
113 | if ((dev_priv->irq_mask & mask) != mask) { |
114 | dev_priv->irq_mask |= mask; | |
115 | I915_WRITE(DEIMR, dev_priv->irq_mask); | |
3143a2bf | 116 | POSTING_READ(DEIMR); |
036a4a7d ZW |
117 | } |
118 | } | |
119 | ||
43eaea13 PZ |
120 | /** |
121 | * ilk_update_gt_irq - update GTIMR | |
122 | * @dev_priv: driver private | |
123 | * @interrupt_mask: mask of interrupt bits to update | |
124 | * @enabled_irq_mask: mask of interrupt bits to enable | |
125 | */ | |
126 | static void ilk_update_gt_irq(struct drm_i915_private *dev_priv, | |
127 | uint32_t interrupt_mask, | |
128 | uint32_t enabled_irq_mask) | |
129 | { | |
130 | assert_spin_locked(&dev_priv->irq_lock); | |
131 | ||
c67a470b PZ |
132 | if (dev_priv->pc8.irqs_disabled) { |
133 | WARN(1, "IRQs disabled\n"); | |
134 | dev_priv->pc8.regsave.gtimr &= ~interrupt_mask; | |
135 | dev_priv->pc8.regsave.gtimr |= (~enabled_irq_mask & | |
136 | interrupt_mask); | |
137 | return; | |
138 | } | |
139 | ||
43eaea13 PZ |
140 | dev_priv->gt_irq_mask &= ~interrupt_mask; |
141 | dev_priv->gt_irq_mask |= (~enabled_irq_mask & interrupt_mask); | |
142 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); | |
143 | POSTING_READ(GTIMR); | |
144 | } | |
145 | ||
146 | void ilk_enable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask) | |
147 | { | |
148 | ilk_update_gt_irq(dev_priv, mask, mask); | |
149 | } | |
150 | ||
151 | void ilk_disable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask) | |
152 | { | |
153 | ilk_update_gt_irq(dev_priv, mask, 0); | |
154 | } | |
155 | ||
edbfdb45 PZ |
156 | /** |
157 | * snb_update_pm_irq - update GEN6_PMIMR | |
158 | * @dev_priv: driver private | |
159 | * @interrupt_mask: mask of interrupt bits to update | |
160 | * @enabled_irq_mask: mask of interrupt bits to enable | |
161 | */ | |
162 | static void snb_update_pm_irq(struct drm_i915_private *dev_priv, | |
163 | uint32_t interrupt_mask, | |
164 | uint32_t enabled_irq_mask) | |
165 | { | |
605cd25b | 166 | uint32_t new_val; |
edbfdb45 PZ |
167 | |
168 | assert_spin_locked(&dev_priv->irq_lock); | |
169 | ||
c67a470b PZ |
170 | if (dev_priv->pc8.irqs_disabled) { |
171 | WARN(1, "IRQs disabled\n"); | |
172 | dev_priv->pc8.regsave.gen6_pmimr &= ~interrupt_mask; | |
173 | dev_priv->pc8.regsave.gen6_pmimr |= (~enabled_irq_mask & | |
174 | interrupt_mask); | |
175 | return; | |
176 | } | |
177 | ||
605cd25b | 178 | new_val = dev_priv->pm_irq_mask; |
f52ecbcf PZ |
179 | new_val &= ~interrupt_mask; |
180 | new_val |= (~enabled_irq_mask & interrupt_mask); | |
181 | ||
605cd25b PZ |
182 | if (new_val != dev_priv->pm_irq_mask) { |
183 | dev_priv->pm_irq_mask = new_val; | |
184 | I915_WRITE(GEN6_PMIMR, dev_priv->pm_irq_mask); | |
f52ecbcf PZ |
185 | POSTING_READ(GEN6_PMIMR); |
186 | } | |
edbfdb45 PZ |
187 | } |
188 | ||
189 | void snb_enable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask) | |
190 | { | |
191 | snb_update_pm_irq(dev_priv, mask, mask); | |
192 | } | |
193 | ||
194 | void snb_disable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask) | |
195 | { | |
196 | snb_update_pm_irq(dev_priv, mask, 0); | |
197 | } | |
198 | ||
8664281b PZ |
199 | static bool ivb_can_enable_err_int(struct drm_device *dev) |
200 | { | |
201 | struct drm_i915_private *dev_priv = dev->dev_private; | |
202 | struct intel_crtc *crtc; | |
203 | enum pipe pipe; | |
204 | ||
4bc9d430 DV |
205 | assert_spin_locked(&dev_priv->irq_lock); |
206 | ||
8664281b PZ |
207 | for_each_pipe(pipe) { |
208 | crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]); | |
209 | ||
210 | if (crtc->cpu_fifo_underrun_disabled) | |
211 | return false; | |
212 | } | |
213 | ||
214 | return true; | |
215 | } | |
216 | ||
217 | static bool cpt_can_enable_serr_int(struct drm_device *dev) | |
218 | { | |
219 | struct drm_i915_private *dev_priv = dev->dev_private; | |
220 | enum pipe pipe; | |
221 | struct intel_crtc *crtc; | |
222 | ||
fee884ed DV |
223 | assert_spin_locked(&dev_priv->irq_lock); |
224 | ||
8664281b PZ |
225 | for_each_pipe(pipe) { |
226 | crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]); | |
227 | ||
228 | if (crtc->pch_fifo_underrun_disabled) | |
229 | return false; | |
230 | } | |
231 | ||
232 | return true; | |
233 | } | |
234 | ||
2d9d2b0b VS |
235 | static void i9xx_clear_fifo_underrun(struct drm_device *dev, enum pipe pipe) |
236 | { | |
237 | struct drm_i915_private *dev_priv = dev->dev_private; | |
238 | u32 reg = PIPESTAT(pipe); | |
239 | u32 pipestat = I915_READ(reg) & 0x7fff0000; | |
240 | ||
241 | assert_spin_locked(&dev_priv->irq_lock); | |
242 | ||
243 | I915_WRITE(reg, pipestat | PIPE_FIFO_UNDERRUN_STATUS); | |
244 | POSTING_READ(reg); | |
245 | } | |
246 | ||
8664281b PZ |
247 | static void ironlake_set_fifo_underrun_reporting(struct drm_device *dev, |
248 | enum pipe pipe, bool enable) | |
249 | { | |
250 | struct drm_i915_private *dev_priv = dev->dev_private; | |
251 | uint32_t bit = (pipe == PIPE_A) ? DE_PIPEA_FIFO_UNDERRUN : | |
252 | DE_PIPEB_FIFO_UNDERRUN; | |
253 | ||
254 | if (enable) | |
255 | ironlake_enable_display_irq(dev_priv, bit); | |
256 | else | |
257 | ironlake_disable_display_irq(dev_priv, bit); | |
258 | } | |
259 | ||
260 | static void ivybridge_set_fifo_underrun_reporting(struct drm_device *dev, | |
7336df65 | 261 | enum pipe pipe, bool enable) |
8664281b PZ |
262 | { |
263 | struct drm_i915_private *dev_priv = dev->dev_private; | |
8664281b | 264 | if (enable) { |
7336df65 DV |
265 | I915_WRITE(GEN7_ERR_INT, ERR_INT_FIFO_UNDERRUN(pipe)); |
266 | ||
8664281b PZ |
267 | if (!ivb_can_enable_err_int(dev)) |
268 | return; | |
269 | ||
8664281b PZ |
270 | ironlake_enable_display_irq(dev_priv, DE_ERR_INT_IVB); |
271 | } else { | |
7336df65 DV |
272 | bool was_enabled = !(I915_READ(DEIMR) & DE_ERR_INT_IVB); |
273 | ||
274 | /* Change the state _after_ we've read out the current one. */ | |
8664281b | 275 | ironlake_disable_display_irq(dev_priv, DE_ERR_INT_IVB); |
7336df65 DV |
276 | |
277 | if (!was_enabled && | |
278 | (I915_READ(GEN7_ERR_INT) & ERR_INT_FIFO_UNDERRUN(pipe))) { | |
279 | DRM_DEBUG_KMS("uncleared fifo underrun on pipe %c\n", | |
280 | pipe_name(pipe)); | |
281 | } | |
8664281b PZ |
282 | } |
283 | } | |
284 | ||
38d83c96 DV |
285 | static void broadwell_set_fifo_underrun_reporting(struct drm_device *dev, |
286 | enum pipe pipe, bool enable) | |
287 | { | |
288 | struct drm_i915_private *dev_priv = dev->dev_private; | |
289 | ||
290 | assert_spin_locked(&dev_priv->irq_lock); | |
291 | ||
292 | if (enable) | |
293 | dev_priv->de_irq_mask[pipe] &= ~GEN8_PIPE_FIFO_UNDERRUN; | |
294 | else | |
295 | dev_priv->de_irq_mask[pipe] |= GEN8_PIPE_FIFO_UNDERRUN; | |
296 | I915_WRITE(GEN8_DE_PIPE_IMR(pipe), dev_priv->de_irq_mask[pipe]); | |
297 | POSTING_READ(GEN8_DE_PIPE_IMR(pipe)); | |
298 | } | |
299 | ||
fee884ed DV |
300 | /** |
301 | * ibx_display_interrupt_update - update SDEIMR | |
302 | * @dev_priv: driver private | |
303 | * @interrupt_mask: mask of interrupt bits to update | |
304 | * @enabled_irq_mask: mask of interrupt bits to enable | |
305 | */ | |
306 | static void ibx_display_interrupt_update(struct drm_i915_private *dev_priv, | |
307 | uint32_t interrupt_mask, | |
308 | uint32_t enabled_irq_mask) | |
309 | { | |
310 | uint32_t sdeimr = I915_READ(SDEIMR); | |
311 | sdeimr &= ~interrupt_mask; | |
312 | sdeimr |= (~enabled_irq_mask & interrupt_mask); | |
313 | ||
314 | assert_spin_locked(&dev_priv->irq_lock); | |
315 | ||
c67a470b PZ |
316 | if (dev_priv->pc8.irqs_disabled && |
317 | (interrupt_mask & SDE_HOTPLUG_MASK_CPT)) { | |
318 | WARN(1, "IRQs disabled\n"); | |
319 | dev_priv->pc8.regsave.sdeimr &= ~interrupt_mask; | |
320 | dev_priv->pc8.regsave.sdeimr |= (~enabled_irq_mask & | |
321 | interrupt_mask); | |
322 | return; | |
323 | } | |
324 | ||
fee884ed DV |
325 | I915_WRITE(SDEIMR, sdeimr); |
326 | POSTING_READ(SDEIMR); | |
327 | } | |
328 | #define ibx_enable_display_interrupt(dev_priv, bits) \ | |
329 | ibx_display_interrupt_update((dev_priv), (bits), (bits)) | |
330 | #define ibx_disable_display_interrupt(dev_priv, bits) \ | |
331 | ibx_display_interrupt_update((dev_priv), (bits), 0) | |
332 | ||
de28075d DV |
333 | static void ibx_set_fifo_underrun_reporting(struct drm_device *dev, |
334 | enum transcoder pch_transcoder, | |
8664281b PZ |
335 | bool enable) |
336 | { | |
8664281b | 337 | struct drm_i915_private *dev_priv = dev->dev_private; |
de28075d DV |
338 | uint32_t bit = (pch_transcoder == TRANSCODER_A) ? |
339 | SDE_TRANSA_FIFO_UNDER : SDE_TRANSB_FIFO_UNDER; | |
8664281b PZ |
340 | |
341 | if (enable) | |
fee884ed | 342 | ibx_enable_display_interrupt(dev_priv, bit); |
8664281b | 343 | else |
fee884ed | 344 | ibx_disable_display_interrupt(dev_priv, bit); |
8664281b PZ |
345 | } |
346 | ||
347 | static void cpt_set_fifo_underrun_reporting(struct drm_device *dev, | |
348 | enum transcoder pch_transcoder, | |
349 | bool enable) | |
350 | { | |
351 | struct drm_i915_private *dev_priv = dev->dev_private; | |
352 | ||
353 | if (enable) { | |
1dd246fb DV |
354 | I915_WRITE(SERR_INT, |
355 | SERR_INT_TRANS_FIFO_UNDERRUN(pch_transcoder)); | |
356 | ||
8664281b PZ |
357 | if (!cpt_can_enable_serr_int(dev)) |
358 | return; | |
359 | ||
fee884ed | 360 | ibx_enable_display_interrupt(dev_priv, SDE_ERROR_CPT); |
8664281b | 361 | } else { |
1dd246fb DV |
362 | uint32_t tmp = I915_READ(SERR_INT); |
363 | bool was_enabled = !(I915_READ(SDEIMR) & SDE_ERROR_CPT); | |
364 | ||
365 | /* Change the state _after_ we've read out the current one. */ | |
fee884ed | 366 | ibx_disable_display_interrupt(dev_priv, SDE_ERROR_CPT); |
1dd246fb DV |
367 | |
368 | if (!was_enabled && | |
369 | (tmp & SERR_INT_TRANS_FIFO_UNDERRUN(pch_transcoder))) { | |
370 | DRM_DEBUG_KMS("uncleared pch fifo underrun on pch transcoder %c\n", | |
371 | transcoder_name(pch_transcoder)); | |
372 | } | |
8664281b | 373 | } |
8664281b PZ |
374 | } |
375 | ||
376 | /** | |
377 | * intel_set_cpu_fifo_underrun_reporting - enable/disable FIFO underrun messages | |
378 | * @dev: drm device | |
379 | * @pipe: pipe | |
380 | * @enable: true if we want to report FIFO underrun errors, false otherwise | |
381 | * | |
382 | * This function makes us disable or enable CPU fifo underruns for a specific | |
383 | * pipe. Notice that on some Gens (e.g. IVB, HSW), disabling FIFO underrun | |
384 | * reporting for one pipe may also disable all the other CPU error interruts for | |
385 | * the other pipes, due to the fact that there's just one interrupt mask/enable | |
386 | * bit for all the pipes. | |
387 | * | |
388 | * Returns the previous state of underrun reporting. | |
389 | */ | |
390 | bool intel_set_cpu_fifo_underrun_reporting(struct drm_device *dev, | |
391 | enum pipe pipe, bool enable) | |
392 | { | |
393 | struct drm_i915_private *dev_priv = dev->dev_private; | |
394 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
395 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
396 | unsigned long flags; | |
397 | bool ret; | |
398 | ||
399 | spin_lock_irqsave(&dev_priv->irq_lock, flags); | |
400 | ||
401 | ret = !intel_crtc->cpu_fifo_underrun_disabled; | |
402 | ||
403 | if (enable == ret) | |
404 | goto done; | |
405 | ||
406 | intel_crtc->cpu_fifo_underrun_disabled = !enable; | |
407 | ||
2d9d2b0b VS |
408 | if (enable && (INTEL_INFO(dev)->gen < 5 || IS_VALLEYVIEW(dev))) |
409 | i9xx_clear_fifo_underrun(dev, pipe); | |
410 | else if (IS_GEN5(dev) || IS_GEN6(dev)) | |
8664281b PZ |
411 | ironlake_set_fifo_underrun_reporting(dev, pipe, enable); |
412 | else if (IS_GEN7(dev)) | |
7336df65 | 413 | ivybridge_set_fifo_underrun_reporting(dev, pipe, enable); |
38d83c96 DV |
414 | else if (IS_GEN8(dev)) |
415 | broadwell_set_fifo_underrun_reporting(dev, pipe, enable); | |
8664281b PZ |
416 | |
417 | done: | |
418 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); | |
419 | return ret; | |
420 | } | |
421 | ||
91d181dd ID |
422 | static bool __cpu_fifo_underrun_reporting_enabled(struct drm_device *dev, |
423 | enum pipe pipe) | |
424 | { | |
425 | struct drm_i915_private *dev_priv = dev->dev_private; | |
426 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
427 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
428 | ||
429 | return !intel_crtc->cpu_fifo_underrun_disabled; | |
430 | } | |
431 | ||
8664281b PZ |
432 | /** |
433 | * intel_set_pch_fifo_underrun_reporting - enable/disable FIFO underrun messages | |
434 | * @dev: drm device | |
435 | * @pch_transcoder: the PCH transcoder (same as pipe on IVB and older) | |
436 | * @enable: true if we want to report FIFO underrun errors, false otherwise | |
437 | * | |
438 | * This function makes us disable or enable PCH fifo underruns for a specific | |
439 | * PCH transcoder. Notice that on some PCHs (e.g. CPT/PPT), disabling FIFO | |
440 | * underrun reporting for one transcoder may also disable all the other PCH | |
441 | * error interruts for the other transcoders, due to the fact that there's just | |
442 | * one interrupt mask/enable bit for all the transcoders. | |
443 | * | |
444 | * Returns the previous state of underrun reporting. | |
445 | */ | |
446 | bool intel_set_pch_fifo_underrun_reporting(struct drm_device *dev, | |
447 | enum transcoder pch_transcoder, | |
448 | bool enable) | |
449 | { | |
450 | struct drm_i915_private *dev_priv = dev->dev_private; | |
de28075d DV |
451 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pch_transcoder]; |
452 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
8664281b PZ |
453 | unsigned long flags; |
454 | bool ret; | |
455 | ||
de28075d DV |
456 | /* |
457 | * NOTE: Pre-LPT has a fixed cpu pipe -> pch transcoder mapping, but LPT | |
458 | * has only one pch transcoder A that all pipes can use. To avoid racy | |
459 | * pch transcoder -> pipe lookups from interrupt code simply store the | |
460 | * underrun statistics in crtc A. Since we never expose this anywhere | |
461 | * nor use it outside of the fifo underrun code here using the "wrong" | |
462 | * crtc on LPT won't cause issues. | |
463 | */ | |
8664281b PZ |
464 | |
465 | spin_lock_irqsave(&dev_priv->irq_lock, flags); | |
466 | ||
467 | ret = !intel_crtc->pch_fifo_underrun_disabled; | |
468 | ||
469 | if (enable == ret) | |
470 | goto done; | |
471 | ||
472 | intel_crtc->pch_fifo_underrun_disabled = !enable; | |
473 | ||
474 | if (HAS_PCH_IBX(dev)) | |
de28075d | 475 | ibx_set_fifo_underrun_reporting(dev, pch_transcoder, enable); |
8664281b PZ |
476 | else |
477 | cpt_set_fifo_underrun_reporting(dev, pch_transcoder, enable); | |
478 | ||
479 | done: | |
480 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); | |
481 | return ret; | |
482 | } | |
483 | ||
484 | ||
b5ea642a | 485 | static void |
755e9019 ID |
486 | __i915_enable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe, |
487 | u32 enable_mask, u32 status_mask) | |
7c463586 | 488 | { |
46c06a30 | 489 | u32 reg = PIPESTAT(pipe); |
755e9019 | 490 | u32 pipestat = I915_READ(reg) & PIPESTAT_INT_ENABLE_MASK; |
7c463586 | 491 | |
b79480ba DV |
492 | assert_spin_locked(&dev_priv->irq_lock); |
493 | ||
755e9019 ID |
494 | if (WARN_ON_ONCE(enable_mask & ~PIPESTAT_INT_ENABLE_MASK || |
495 | status_mask & ~PIPESTAT_INT_STATUS_MASK)) | |
496 | return; | |
497 | ||
498 | if ((pipestat & enable_mask) == enable_mask) | |
46c06a30 VS |
499 | return; |
500 | ||
91d181dd ID |
501 | dev_priv->pipestat_irq_mask[pipe] |= status_mask; |
502 | ||
46c06a30 | 503 | /* Enable the interrupt, clear any pending status */ |
755e9019 | 504 | pipestat |= enable_mask | status_mask; |
46c06a30 VS |
505 | I915_WRITE(reg, pipestat); |
506 | POSTING_READ(reg); | |
7c463586 KP |
507 | } |
508 | ||
b5ea642a | 509 | static void |
755e9019 ID |
510 | __i915_disable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe, |
511 | u32 enable_mask, u32 status_mask) | |
7c463586 | 512 | { |
46c06a30 | 513 | u32 reg = PIPESTAT(pipe); |
755e9019 | 514 | u32 pipestat = I915_READ(reg) & PIPESTAT_INT_ENABLE_MASK; |
7c463586 | 515 | |
b79480ba DV |
516 | assert_spin_locked(&dev_priv->irq_lock); |
517 | ||
755e9019 ID |
518 | if (WARN_ON_ONCE(enable_mask & ~PIPESTAT_INT_ENABLE_MASK || |
519 | status_mask & ~PIPESTAT_INT_STATUS_MASK)) | |
46c06a30 VS |
520 | return; |
521 | ||
755e9019 ID |
522 | if ((pipestat & enable_mask) == 0) |
523 | return; | |
524 | ||
91d181dd ID |
525 | dev_priv->pipestat_irq_mask[pipe] &= ~status_mask; |
526 | ||
755e9019 | 527 | pipestat &= ~enable_mask; |
46c06a30 VS |
528 | I915_WRITE(reg, pipestat); |
529 | POSTING_READ(reg); | |
7c463586 KP |
530 | } |
531 | ||
10c59c51 ID |
532 | static u32 vlv_get_pipestat_enable_mask(struct drm_device *dev, u32 status_mask) |
533 | { | |
534 | u32 enable_mask = status_mask << 16; | |
535 | ||
536 | /* | |
537 | * On pipe A we don't support the PSR interrupt yet, on pipe B the | |
538 | * same bit MBZ. | |
539 | */ | |
540 | if (WARN_ON_ONCE(status_mask & PIPE_A_PSR_STATUS_VLV)) | |
541 | return 0; | |
542 | ||
543 | enable_mask &= ~(PIPE_FIFO_UNDERRUN_STATUS | | |
544 | SPRITE0_FLIP_DONE_INT_EN_VLV | | |
545 | SPRITE1_FLIP_DONE_INT_EN_VLV); | |
546 | if (status_mask & SPRITE0_FLIP_DONE_INT_STATUS_VLV) | |
547 | enable_mask |= SPRITE0_FLIP_DONE_INT_EN_VLV; | |
548 | if (status_mask & SPRITE1_FLIP_DONE_INT_STATUS_VLV) | |
549 | enable_mask |= SPRITE1_FLIP_DONE_INT_EN_VLV; | |
550 | ||
551 | return enable_mask; | |
552 | } | |
553 | ||
755e9019 ID |
554 | void |
555 | i915_enable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe, | |
556 | u32 status_mask) | |
557 | { | |
558 | u32 enable_mask; | |
559 | ||
10c59c51 ID |
560 | if (IS_VALLEYVIEW(dev_priv->dev)) |
561 | enable_mask = vlv_get_pipestat_enable_mask(dev_priv->dev, | |
562 | status_mask); | |
563 | else | |
564 | enable_mask = status_mask << 16; | |
755e9019 ID |
565 | __i915_enable_pipestat(dev_priv, pipe, enable_mask, status_mask); |
566 | } | |
567 | ||
568 | void | |
569 | i915_disable_pipestat(struct drm_i915_private *dev_priv, enum pipe pipe, | |
570 | u32 status_mask) | |
571 | { | |
572 | u32 enable_mask; | |
573 | ||
10c59c51 ID |
574 | if (IS_VALLEYVIEW(dev_priv->dev)) |
575 | enable_mask = vlv_get_pipestat_enable_mask(dev_priv->dev, | |
576 | status_mask); | |
577 | else | |
578 | enable_mask = status_mask << 16; | |
755e9019 ID |
579 | __i915_disable_pipestat(dev_priv, pipe, enable_mask, status_mask); |
580 | } | |
581 | ||
01c66889 | 582 | /** |
f49e38dd | 583 | * i915_enable_asle_pipestat - enable ASLE pipestat for OpRegion |
01c66889 | 584 | */ |
f49e38dd | 585 | static void i915_enable_asle_pipestat(struct drm_device *dev) |
01c66889 | 586 | { |
1ec14ad3 CW |
587 | drm_i915_private_t *dev_priv = dev->dev_private; |
588 | unsigned long irqflags; | |
589 | ||
f49e38dd JN |
590 | if (!dev_priv->opregion.asle || !IS_MOBILE(dev)) |
591 | return; | |
592 | ||
1ec14ad3 | 593 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
01c66889 | 594 | |
755e9019 | 595 | i915_enable_pipestat(dev_priv, PIPE_B, PIPE_LEGACY_BLC_EVENT_STATUS); |
f898780b | 596 | if (INTEL_INFO(dev)->gen >= 4) |
3b6c42e8 | 597 | i915_enable_pipestat(dev_priv, PIPE_A, |
755e9019 | 598 | PIPE_LEGACY_BLC_EVENT_STATUS); |
1ec14ad3 CW |
599 | |
600 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
01c66889 ZY |
601 | } |
602 | ||
0a3e67a4 JB |
603 | /** |
604 | * i915_pipe_enabled - check if a pipe is enabled | |
605 | * @dev: DRM device | |
606 | * @pipe: pipe to check | |
607 | * | |
608 | * Reading certain registers when the pipe is disabled can hang the chip. | |
609 | * Use this routine to make sure the PLL is running and the pipe is active | |
610 | * before reading such registers if unsure. | |
611 | */ | |
612 | static int | |
613 | i915_pipe_enabled(struct drm_device *dev, int pipe) | |
614 | { | |
615 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
702e7a56 | 616 | |
a01025af DV |
617 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { |
618 | /* Locking is horribly broken here, but whatever. */ | |
619 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
620 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
71f8ba6b | 621 | |
a01025af DV |
622 | return intel_crtc->active; |
623 | } else { | |
624 | return I915_READ(PIPECONF(pipe)) & PIPECONF_ENABLE; | |
625 | } | |
0a3e67a4 JB |
626 | } |
627 | ||
4cdb83ec VS |
628 | static u32 i8xx_get_vblank_counter(struct drm_device *dev, int pipe) |
629 | { | |
630 | /* Gen2 doesn't have a hardware frame counter */ | |
631 | return 0; | |
632 | } | |
633 | ||
42f52ef8 KP |
634 | /* Called from drm generic code, passed a 'crtc', which |
635 | * we use as a pipe index | |
636 | */ | |
f71d4af4 | 637 | static u32 i915_get_vblank_counter(struct drm_device *dev, int pipe) |
0a3e67a4 JB |
638 | { |
639 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
640 | unsigned long high_frame; | |
641 | unsigned long low_frame; | |
391f75e2 | 642 | u32 high1, high2, low, pixel, vbl_start; |
0a3e67a4 JB |
643 | |
644 | if (!i915_pipe_enabled(dev, pipe)) { | |
44d98a61 | 645 | DRM_DEBUG_DRIVER("trying to get vblank count for disabled " |
9db4a9c7 | 646 | "pipe %c\n", pipe_name(pipe)); |
0a3e67a4 JB |
647 | return 0; |
648 | } | |
649 | ||
391f75e2 VS |
650 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { |
651 | struct intel_crtc *intel_crtc = | |
652 | to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]); | |
653 | const struct drm_display_mode *mode = | |
654 | &intel_crtc->config.adjusted_mode; | |
655 | ||
656 | vbl_start = mode->crtc_vblank_start * mode->crtc_htotal; | |
657 | } else { | |
658 | enum transcoder cpu_transcoder = | |
659 | intel_pipe_to_cpu_transcoder(dev_priv, pipe); | |
660 | u32 htotal; | |
661 | ||
662 | htotal = ((I915_READ(HTOTAL(cpu_transcoder)) >> 16) & 0x1fff) + 1; | |
663 | vbl_start = (I915_READ(VBLANK(cpu_transcoder)) & 0x1fff) + 1; | |
664 | ||
665 | vbl_start *= htotal; | |
666 | } | |
667 | ||
9db4a9c7 JB |
668 | high_frame = PIPEFRAME(pipe); |
669 | low_frame = PIPEFRAMEPIXEL(pipe); | |
5eddb70b | 670 | |
0a3e67a4 JB |
671 | /* |
672 | * High & low register fields aren't synchronized, so make sure | |
673 | * we get a low value that's stable across two reads of the high | |
674 | * register. | |
675 | */ | |
676 | do { | |
5eddb70b | 677 | high1 = I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK; |
391f75e2 | 678 | low = I915_READ(low_frame); |
5eddb70b | 679 | high2 = I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK; |
0a3e67a4 JB |
680 | } while (high1 != high2); |
681 | ||
5eddb70b | 682 | high1 >>= PIPE_FRAME_HIGH_SHIFT; |
391f75e2 | 683 | pixel = low & PIPE_PIXEL_MASK; |
5eddb70b | 684 | low >>= PIPE_FRAME_LOW_SHIFT; |
391f75e2 VS |
685 | |
686 | /* | |
687 | * The frame counter increments at beginning of active. | |
688 | * Cook up a vblank counter by also checking the pixel | |
689 | * counter against vblank start. | |
690 | */ | |
edc08d0a | 691 | return (((high1 << 8) | low) + (pixel >= vbl_start)) & 0xffffff; |
0a3e67a4 JB |
692 | } |
693 | ||
f71d4af4 | 694 | static u32 gm45_get_vblank_counter(struct drm_device *dev, int pipe) |
9880b7a5 JB |
695 | { |
696 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
9db4a9c7 | 697 | int reg = PIPE_FRMCOUNT_GM45(pipe); |
9880b7a5 JB |
698 | |
699 | if (!i915_pipe_enabled(dev, pipe)) { | |
44d98a61 | 700 | DRM_DEBUG_DRIVER("trying to get vblank count for disabled " |
9db4a9c7 | 701 | "pipe %c\n", pipe_name(pipe)); |
9880b7a5 JB |
702 | return 0; |
703 | } | |
704 | ||
705 | return I915_READ(reg); | |
706 | } | |
707 | ||
ad3543ed MK |
708 | /* raw reads, only for fast reads of display block, no need for forcewake etc. */ |
709 | #define __raw_i915_read32(dev_priv__, reg__) readl((dev_priv__)->regs + (reg__)) | |
710 | #define __raw_i915_read16(dev_priv__, reg__) readw((dev_priv__)->regs + (reg__)) | |
711 | ||
095163ba | 712 | static bool ilk_pipe_in_vblank_locked(struct drm_device *dev, enum pipe pipe) |
54ddcbd2 VS |
713 | { |
714 | struct drm_i915_private *dev_priv = dev->dev_private; | |
715 | uint32_t status; | |
716 | ||
095163ba | 717 | if (INTEL_INFO(dev)->gen < 7) { |
54ddcbd2 VS |
718 | status = pipe == PIPE_A ? |
719 | DE_PIPEA_VBLANK : | |
720 | DE_PIPEB_VBLANK; | |
54ddcbd2 VS |
721 | } else { |
722 | switch (pipe) { | |
723 | default: | |
724 | case PIPE_A: | |
725 | status = DE_PIPEA_VBLANK_IVB; | |
726 | break; | |
727 | case PIPE_B: | |
728 | status = DE_PIPEB_VBLANK_IVB; | |
729 | break; | |
730 | case PIPE_C: | |
731 | status = DE_PIPEC_VBLANK_IVB; | |
732 | break; | |
733 | } | |
54ddcbd2 | 734 | } |
ad3543ed | 735 | |
095163ba | 736 | return __raw_i915_read32(dev_priv, DEISR) & status; |
54ddcbd2 VS |
737 | } |
738 | ||
f71d4af4 | 739 | static int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe, |
abca9e45 VS |
740 | unsigned int flags, int *vpos, int *hpos, |
741 | ktime_t *stime, ktime_t *etime) | |
0af7e4df | 742 | { |
c2baf4b7 VS |
743 | struct drm_i915_private *dev_priv = dev->dev_private; |
744 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
745 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
746 | const struct drm_display_mode *mode = &intel_crtc->config.adjusted_mode; | |
3aa18df8 | 747 | int position; |
0af7e4df MK |
748 | int vbl_start, vbl_end, htotal, vtotal; |
749 | bool in_vbl = true; | |
750 | int ret = 0; | |
ad3543ed | 751 | unsigned long irqflags; |
0af7e4df | 752 | |
c2baf4b7 | 753 | if (!intel_crtc->active) { |
0af7e4df | 754 | DRM_DEBUG_DRIVER("trying to get scanoutpos for disabled " |
9db4a9c7 | 755 | "pipe %c\n", pipe_name(pipe)); |
0af7e4df MK |
756 | return 0; |
757 | } | |
758 | ||
c2baf4b7 VS |
759 | htotal = mode->crtc_htotal; |
760 | vtotal = mode->crtc_vtotal; | |
761 | vbl_start = mode->crtc_vblank_start; | |
762 | vbl_end = mode->crtc_vblank_end; | |
0af7e4df | 763 | |
d31faf65 VS |
764 | if (mode->flags & DRM_MODE_FLAG_INTERLACE) { |
765 | vbl_start = DIV_ROUND_UP(vbl_start, 2); | |
766 | vbl_end /= 2; | |
767 | vtotal /= 2; | |
768 | } | |
769 | ||
c2baf4b7 VS |
770 | ret |= DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE; |
771 | ||
ad3543ed MK |
772 | /* |
773 | * Lock uncore.lock, as we will do multiple timing critical raw | |
774 | * register reads, potentially with preemption disabled, so the | |
775 | * following code must not block on uncore.lock. | |
776 | */ | |
777 | spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); | |
778 | ||
779 | /* preempt_disable_rt() should go right here in PREEMPT_RT patchset. */ | |
780 | ||
781 | /* Get optional system timestamp before query. */ | |
782 | if (stime) | |
783 | *stime = ktime_get(); | |
784 | ||
7c06b08a | 785 | if (IS_GEN2(dev) || IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) { |
0af7e4df MK |
786 | /* No obvious pixelcount register. Only query vertical |
787 | * scanout position from Display scan line register. | |
788 | */ | |
7c06b08a | 789 | if (IS_GEN2(dev)) |
ad3543ed | 790 | position = __raw_i915_read32(dev_priv, PIPEDSL(pipe)) & DSL_LINEMASK_GEN2; |
7c06b08a | 791 | else |
ad3543ed | 792 | position = __raw_i915_read32(dev_priv, PIPEDSL(pipe)) & DSL_LINEMASK_GEN3; |
54ddcbd2 | 793 | |
095163ba VS |
794 | if (HAS_PCH_SPLIT(dev)) { |
795 | /* | |
796 | * The scanline counter increments at the leading edge | |
797 | * of hsync, ie. it completely misses the active portion | |
798 | * of the line. Fix up the counter at both edges of vblank | |
799 | * to get a more accurate picture whether we're in vblank | |
800 | * or not. | |
801 | */ | |
802 | in_vbl = ilk_pipe_in_vblank_locked(dev, pipe); | |
803 | if ((in_vbl && position == vbl_start - 1) || | |
804 | (!in_vbl && position == vbl_end - 1)) | |
805 | position = (position + 1) % vtotal; | |
806 | } else { | |
807 | /* | |
808 | * ISR vblank status bits don't work the way we'd want | |
809 | * them to work on non-PCH platforms (for | |
810 | * ilk_pipe_in_vblank_locked()), and there doesn't | |
811 | * appear any other way to determine if we're currently | |
812 | * in vblank. | |
813 | * | |
814 | * Instead let's assume that we're already in vblank if | |
815 | * we got called from the vblank interrupt and the | |
816 | * scanline counter value indicates that we're on the | |
817 | * line just prior to vblank start. This should result | |
818 | * in the correct answer, unless the vblank interrupt | |
819 | * delivery really got delayed for almost exactly one | |
820 | * full frame/field. | |
821 | */ | |
822 | if (flags & DRM_CALLED_FROM_VBLIRQ && | |
823 | position == vbl_start - 1) { | |
824 | position = (position + 1) % vtotal; | |
825 | ||
826 | /* Signal this correction as "applied". */ | |
827 | ret |= 0x8; | |
828 | } | |
829 | } | |
0af7e4df MK |
830 | } else { |
831 | /* Have access to pixelcount since start of frame. | |
832 | * We can split this into vertical and horizontal | |
833 | * scanout position. | |
834 | */ | |
ad3543ed | 835 | position = (__raw_i915_read32(dev_priv, PIPEFRAMEPIXEL(pipe)) & PIPE_PIXEL_MASK) >> PIPE_PIXEL_SHIFT; |
0af7e4df | 836 | |
3aa18df8 VS |
837 | /* convert to pixel counts */ |
838 | vbl_start *= htotal; | |
839 | vbl_end *= htotal; | |
840 | vtotal *= htotal; | |
0af7e4df MK |
841 | } |
842 | ||
ad3543ed MK |
843 | /* Get optional system timestamp after query. */ |
844 | if (etime) | |
845 | *etime = ktime_get(); | |
846 | ||
847 | /* preempt_enable_rt() should go right here in PREEMPT_RT patchset. */ | |
848 | ||
849 | spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); | |
850 | ||
3aa18df8 VS |
851 | in_vbl = position >= vbl_start && position < vbl_end; |
852 | ||
853 | /* | |
854 | * While in vblank, position will be negative | |
855 | * counting up towards 0 at vbl_end. And outside | |
856 | * vblank, position will be positive counting | |
857 | * up since vbl_end. | |
858 | */ | |
859 | if (position >= vbl_start) | |
860 | position -= vbl_end; | |
861 | else | |
862 | position += vtotal - vbl_end; | |
0af7e4df | 863 | |
7c06b08a | 864 | if (IS_GEN2(dev) || IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) { |
3aa18df8 VS |
865 | *vpos = position; |
866 | *hpos = 0; | |
867 | } else { | |
868 | *vpos = position / htotal; | |
869 | *hpos = position - (*vpos * htotal); | |
870 | } | |
0af7e4df | 871 | |
0af7e4df MK |
872 | /* In vblank? */ |
873 | if (in_vbl) | |
874 | ret |= DRM_SCANOUTPOS_INVBL; | |
875 | ||
876 | return ret; | |
877 | } | |
878 | ||
f71d4af4 | 879 | static int i915_get_vblank_timestamp(struct drm_device *dev, int pipe, |
0af7e4df MK |
880 | int *max_error, |
881 | struct timeval *vblank_time, | |
882 | unsigned flags) | |
883 | { | |
4041b853 | 884 | struct drm_crtc *crtc; |
0af7e4df | 885 | |
7eb552ae | 886 | if (pipe < 0 || pipe >= INTEL_INFO(dev)->num_pipes) { |
4041b853 | 887 | DRM_ERROR("Invalid crtc %d\n", pipe); |
0af7e4df MK |
888 | return -EINVAL; |
889 | } | |
890 | ||
891 | /* Get drm_crtc to timestamp: */ | |
4041b853 CW |
892 | crtc = intel_get_crtc_for_pipe(dev, pipe); |
893 | if (crtc == NULL) { | |
894 | DRM_ERROR("Invalid crtc %d\n", pipe); | |
895 | return -EINVAL; | |
896 | } | |
897 | ||
898 | if (!crtc->enabled) { | |
899 | DRM_DEBUG_KMS("crtc %d is disabled\n", pipe); | |
900 | return -EBUSY; | |
901 | } | |
0af7e4df MK |
902 | |
903 | /* Helper routine in DRM core does all the work: */ | |
4041b853 CW |
904 | return drm_calc_vbltimestamp_from_scanoutpos(dev, pipe, max_error, |
905 | vblank_time, flags, | |
7da903ef VS |
906 | crtc, |
907 | &to_intel_crtc(crtc)->config.adjusted_mode); | |
0af7e4df MK |
908 | } |
909 | ||
67c347ff JN |
910 | static bool intel_hpd_irq_event(struct drm_device *dev, |
911 | struct drm_connector *connector) | |
321a1b30 EE |
912 | { |
913 | enum drm_connector_status old_status; | |
914 | ||
915 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); | |
916 | old_status = connector->status; | |
917 | ||
918 | connector->status = connector->funcs->detect(connector, false); | |
67c347ff JN |
919 | if (old_status == connector->status) |
920 | return false; | |
921 | ||
922 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %s to %s\n", | |
321a1b30 EE |
923 | connector->base.id, |
924 | drm_get_connector_name(connector), | |
67c347ff JN |
925 | drm_get_connector_status_name(old_status), |
926 | drm_get_connector_status_name(connector->status)); | |
927 | ||
928 | return true; | |
321a1b30 EE |
929 | } |
930 | ||
5ca58282 JB |
931 | /* |
932 | * Handle hotplug events outside the interrupt handler proper. | |
933 | */ | |
ac4c16c5 EE |
934 | #define I915_REENABLE_HOTPLUG_DELAY (2*60*1000) |
935 | ||
5ca58282 JB |
936 | static void i915_hotplug_work_func(struct work_struct *work) |
937 | { | |
938 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, | |
939 | hotplug_work); | |
940 | struct drm_device *dev = dev_priv->dev; | |
c31c4ba3 | 941 | struct drm_mode_config *mode_config = &dev->mode_config; |
cd569aed EE |
942 | struct intel_connector *intel_connector; |
943 | struct intel_encoder *intel_encoder; | |
944 | struct drm_connector *connector; | |
945 | unsigned long irqflags; | |
946 | bool hpd_disabled = false; | |
321a1b30 | 947 | bool changed = false; |
142e2398 | 948 | u32 hpd_event_bits; |
4ef69c7a | 949 | |
52d7eced DV |
950 | /* HPD irq before everything is fully set up. */ |
951 | if (!dev_priv->enable_hotplug_processing) | |
952 | return; | |
953 | ||
a65e34c7 | 954 | mutex_lock(&mode_config->mutex); |
e67189ab JB |
955 | DRM_DEBUG_KMS("running encoder hotplug functions\n"); |
956 | ||
cd569aed | 957 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
142e2398 EE |
958 | |
959 | hpd_event_bits = dev_priv->hpd_event_bits; | |
960 | dev_priv->hpd_event_bits = 0; | |
cd569aed EE |
961 | list_for_each_entry(connector, &mode_config->connector_list, head) { |
962 | intel_connector = to_intel_connector(connector); | |
963 | intel_encoder = intel_connector->encoder; | |
964 | if (intel_encoder->hpd_pin > HPD_NONE && | |
965 | dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_MARK_DISABLED && | |
966 | connector->polled == DRM_CONNECTOR_POLL_HPD) { | |
967 | DRM_INFO("HPD interrupt storm detected on connector %s: " | |
968 | "switching from hotplug detection to polling\n", | |
969 | drm_get_connector_name(connector)); | |
970 | dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark = HPD_DISABLED; | |
971 | connector->polled = DRM_CONNECTOR_POLL_CONNECT | |
972 | | DRM_CONNECTOR_POLL_DISCONNECT; | |
973 | hpd_disabled = true; | |
974 | } | |
142e2398 EE |
975 | if (hpd_event_bits & (1 << intel_encoder->hpd_pin)) { |
976 | DRM_DEBUG_KMS("Connector %s (pin %i) received hotplug event.\n", | |
977 | drm_get_connector_name(connector), intel_encoder->hpd_pin); | |
978 | } | |
cd569aed EE |
979 | } |
980 | /* if there were no outputs to poll, poll was disabled, | |
981 | * therefore make sure it's enabled when disabling HPD on | |
982 | * some connectors */ | |
ac4c16c5 | 983 | if (hpd_disabled) { |
cd569aed | 984 | drm_kms_helper_poll_enable(dev); |
ac4c16c5 EE |
985 | mod_timer(&dev_priv->hotplug_reenable_timer, |
986 | jiffies + msecs_to_jiffies(I915_REENABLE_HOTPLUG_DELAY)); | |
987 | } | |
cd569aed EE |
988 | |
989 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
990 | ||
321a1b30 EE |
991 | list_for_each_entry(connector, &mode_config->connector_list, head) { |
992 | intel_connector = to_intel_connector(connector); | |
993 | intel_encoder = intel_connector->encoder; | |
994 | if (hpd_event_bits & (1 << intel_encoder->hpd_pin)) { | |
995 | if (intel_encoder->hot_plug) | |
996 | intel_encoder->hot_plug(intel_encoder); | |
997 | if (intel_hpd_irq_event(dev, connector)) | |
998 | changed = true; | |
999 | } | |
1000 | } | |
40ee3381 KP |
1001 | mutex_unlock(&mode_config->mutex); |
1002 | ||
321a1b30 EE |
1003 | if (changed) |
1004 | drm_kms_helper_hotplug_event(dev); | |
5ca58282 JB |
1005 | } |
1006 | ||
3ca1cced VS |
1007 | static void intel_hpd_irq_uninstall(struct drm_i915_private *dev_priv) |
1008 | { | |
1009 | del_timer_sync(&dev_priv->hotplug_reenable_timer); | |
1010 | } | |
1011 | ||
d0ecd7e2 | 1012 | static void ironlake_rps_change_irq_handler(struct drm_device *dev) |
f97108d1 JB |
1013 | { |
1014 | drm_i915_private_t *dev_priv = dev->dev_private; | |
b5b72e89 | 1015 | u32 busy_up, busy_down, max_avg, min_avg; |
9270388e | 1016 | u8 new_delay; |
9270388e | 1017 | |
d0ecd7e2 | 1018 | spin_lock(&mchdev_lock); |
f97108d1 | 1019 | |
73edd18f DV |
1020 | I915_WRITE16(MEMINTRSTS, I915_READ(MEMINTRSTS)); |
1021 | ||
20e4d407 | 1022 | new_delay = dev_priv->ips.cur_delay; |
9270388e | 1023 | |
7648fa99 | 1024 | I915_WRITE16(MEMINTRSTS, MEMINT_EVAL_CHG); |
b5b72e89 MG |
1025 | busy_up = I915_READ(RCPREVBSYTUPAVG); |
1026 | busy_down = I915_READ(RCPREVBSYTDNAVG); | |
f97108d1 JB |
1027 | max_avg = I915_READ(RCBMAXAVG); |
1028 | min_avg = I915_READ(RCBMINAVG); | |
1029 | ||
1030 | /* Handle RCS change request from hw */ | |
b5b72e89 | 1031 | if (busy_up > max_avg) { |
20e4d407 DV |
1032 | if (dev_priv->ips.cur_delay != dev_priv->ips.max_delay) |
1033 | new_delay = dev_priv->ips.cur_delay - 1; | |
1034 | if (new_delay < dev_priv->ips.max_delay) | |
1035 | new_delay = dev_priv->ips.max_delay; | |
b5b72e89 | 1036 | } else if (busy_down < min_avg) { |
20e4d407 DV |
1037 | if (dev_priv->ips.cur_delay != dev_priv->ips.min_delay) |
1038 | new_delay = dev_priv->ips.cur_delay + 1; | |
1039 | if (new_delay > dev_priv->ips.min_delay) | |
1040 | new_delay = dev_priv->ips.min_delay; | |
f97108d1 JB |
1041 | } |
1042 | ||
7648fa99 | 1043 | if (ironlake_set_drps(dev, new_delay)) |
20e4d407 | 1044 | dev_priv->ips.cur_delay = new_delay; |
f97108d1 | 1045 | |
d0ecd7e2 | 1046 | spin_unlock(&mchdev_lock); |
9270388e | 1047 | |
f97108d1 JB |
1048 | return; |
1049 | } | |
1050 | ||
549f7365 CW |
1051 | static void notify_ring(struct drm_device *dev, |
1052 | struct intel_ring_buffer *ring) | |
1053 | { | |
475553de CW |
1054 | if (ring->obj == NULL) |
1055 | return; | |
1056 | ||
814e9b57 | 1057 | trace_i915_gem_request_complete(ring); |
9862e600 | 1058 | |
549f7365 | 1059 | wake_up_all(&ring->irq_queue); |
10cd45b6 | 1060 | i915_queue_hangcheck(dev); |
549f7365 CW |
1061 | } |
1062 | ||
76c3552f | 1063 | void gen6_set_pm_mask(struct drm_i915_private *dev_priv, |
27544369 D |
1064 | u32 pm_iir, int new_delay) |
1065 | { | |
1066 | if (pm_iir & GEN6_PM_RP_UP_THRESHOLD) { | |
1067 | if (new_delay >= dev_priv->rps.max_delay) { | |
1068 | /* Mask UP THRESHOLD Interrupts */ | |
1069 | I915_WRITE(GEN6_PMINTRMSK, | |
1070 | I915_READ(GEN6_PMINTRMSK) | | |
1071 | GEN6_PM_RP_UP_THRESHOLD); | |
1072 | dev_priv->rps.rp_up_masked = true; | |
1073 | } | |
1074 | if (dev_priv->rps.rp_down_masked) { | |
1075 | /* UnMask DOWN THRESHOLD Interrupts */ | |
1076 | I915_WRITE(GEN6_PMINTRMSK, | |
1077 | I915_READ(GEN6_PMINTRMSK) & | |
1078 | ~GEN6_PM_RP_DOWN_THRESHOLD); | |
1079 | dev_priv->rps.rp_down_masked = false; | |
1080 | } | |
1081 | } else if (pm_iir & GEN6_PM_RP_DOWN_THRESHOLD) { | |
1082 | if (new_delay <= dev_priv->rps.min_delay) { | |
1083 | /* Mask DOWN THRESHOLD Interrupts */ | |
1084 | I915_WRITE(GEN6_PMINTRMSK, | |
1085 | I915_READ(GEN6_PMINTRMSK) | | |
1086 | GEN6_PM_RP_DOWN_THRESHOLD); | |
1087 | dev_priv->rps.rp_down_masked = true; | |
1088 | } | |
1089 | ||
1090 | if (dev_priv->rps.rp_up_masked) { | |
1091 | /* UnMask UP THRESHOLD Interrupts */ | |
1092 | I915_WRITE(GEN6_PMINTRMSK, | |
1093 | I915_READ(GEN6_PMINTRMSK) & | |
1094 | ~GEN6_PM_RP_UP_THRESHOLD); | |
1095 | dev_priv->rps.rp_up_masked = false; | |
1096 | } | |
1097 | } | |
1098 | } | |
1099 | ||
4912d041 | 1100 | static void gen6_pm_rps_work(struct work_struct *work) |
3b8d8d91 | 1101 | { |
4912d041 | 1102 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, |
c6a828d3 | 1103 | rps.work); |
edbfdb45 | 1104 | u32 pm_iir; |
dd75fdc8 | 1105 | int new_delay, adj; |
4912d041 | 1106 | |
59cdb63d | 1107 | spin_lock_irq(&dev_priv->irq_lock); |
c6a828d3 DV |
1108 | pm_iir = dev_priv->rps.pm_iir; |
1109 | dev_priv->rps.pm_iir = 0; | |
4848405c | 1110 | /* Make sure not to corrupt PMIMR state used by ringbuffer code */ |
edbfdb45 | 1111 | snb_enable_pm_irq(dev_priv, GEN6_PM_RPS_EVENTS); |
59cdb63d | 1112 | spin_unlock_irq(&dev_priv->irq_lock); |
3b8d8d91 | 1113 | |
60611c13 PZ |
1114 | /* Make sure we didn't queue anything we're not going to process. */ |
1115 | WARN_ON(pm_iir & ~GEN6_PM_RPS_EVENTS); | |
1116 | ||
4848405c | 1117 | if ((pm_iir & GEN6_PM_RPS_EVENTS) == 0) |
3b8d8d91 JB |
1118 | return; |
1119 | ||
4fc688ce | 1120 | mutex_lock(&dev_priv->rps.hw_lock); |
7b9e0ae6 | 1121 | |
dd75fdc8 | 1122 | adj = dev_priv->rps.last_adj; |
7425034a | 1123 | if (pm_iir & GEN6_PM_RP_UP_THRESHOLD) { |
dd75fdc8 CW |
1124 | if (adj > 0) |
1125 | adj *= 2; | |
1126 | else | |
1127 | adj = 1; | |
1128 | new_delay = dev_priv->rps.cur_delay + adj; | |
7425034a VS |
1129 | |
1130 | /* | |
1131 | * For better performance, jump directly | |
1132 | * to RPe if we're below it. | |
1133 | */ | |
dd75fdc8 CW |
1134 | if (new_delay < dev_priv->rps.rpe_delay) |
1135 | new_delay = dev_priv->rps.rpe_delay; | |
1136 | } else if (pm_iir & GEN6_PM_RP_DOWN_TIMEOUT) { | |
1137 | if (dev_priv->rps.cur_delay > dev_priv->rps.rpe_delay) | |
7425034a | 1138 | new_delay = dev_priv->rps.rpe_delay; |
dd75fdc8 CW |
1139 | else |
1140 | new_delay = dev_priv->rps.min_delay; | |
1141 | adj = 0; | |
1142 | } else if (pm_iir & GEN6_PM_RP_DOWN_THRESHOLD) { | |
1143 | if (adj < 0) | |
1144 | adj *= 2; | |
1145 | else | |
1146 | adj = -1; | |
1147 | new_delay = dev_priv->rps.cur_delay + adj; | |
1148 | } else { /* unknown event */ | |
1149 | new_delay = dev_priv->rps.cur_delay; | |
1150 | } | |
3b8d8d91 | 1151 | |
79249636 BW |
1152 | /* sysfs frequency interfaces may have snuck in while servicing the |
1153 | * interrupt | |
1154 | */ | |
1272e7b8 VS |
1155 | new_delay = clamp_t(int, new_delay, |
1156 | dev_priv->rps.min_delay, dev_priv->rps.max_delay); | |
27544369 D |
1157 | |
1158 | gen6_set_pm_mask(dev_priv, pm_iir, new_delay); | |
dd75fdc8 CW |
1159 | dev_priv->rps.last_adj = new_delay - dev_priv->rps.cur_delay; |
1160 | ||
1161 | if (IS_VALLEYVIEW(dev_priv->dev)) | |
1162 | valleyview_set_rps(dev_priv->dev, new_delay); | |
1163 | else | |
1164 | gen6_set_rps(dev_priv->dev, new_delay); | |
3b8d8d91 | 1165 | |
4fc688ce | 1166 | mutex_unlock(&dev_priv->rps.hw_lock); |
3b8d8d91 JB |
1167 | } |
1168 | ||
e3689190 BW |
1169 | |
1170 | /** | |
1171 | * ivybridge_parity_work - Workqueue called when a parity error interrupt | |
1172 | * occurred. | |
1173 | * @work: workqueue struct | |
1174 | * | |
1175 | * Doesn't actually do anything except notify userspace. As a consequence of | |
1176 | * this event, userspace should try to remap the bad rows since statistically | |
1177 | * it is likely the same row is more likely to go bad again. | |
1178 | */ | |
1179 | static void ivybridge_parity_work(struct work_struct *work) | |
1180 | { | |
1181 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, | |
a4da4fa4 | 1182 | l3_parity.error_work); |
e3689190 | 1183 | u32 error_status, row, bank, subbank; |
35a85ac6 | 1184 | char *parity_event[6]; |
e3689190 BW |
1185 | uint32_t misccpctl; |
1186 | unsigned long flags; | |
35a85ac6 | 1187 | uint8_t slice = 0; |
e3689190 BW |
1188 | |
1189 | /* We must turn off DOP level clock gating to access the L3 registers. | |
1190 | * In order to prevent a get/put style interface, acquire struct mutex | |
1191 | * any time we access those registers. | |
1192 | */ | |
1193 | mutex_lock(&dev_priv->dev->struct_mutex); | |
1194 | ||
35a85ac6 BW |
1195 | /* If we've screwed up tracking, just let the interrupt fire again */ |
1196 | if (WARN_ON(!dev_priv->l3_parity.which_slice)) | |
1197 | goto out; | |
1198 | ||
e3689190 BW |
1199 | misccpctl = I915_READ(GEN7_MISCCPCTL); |
1200 | I915_WRITE(GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE); | |
1201 | POSTING_READ(GEN7_MISCCPCTL); | |
1202 | ||
35a85ac6 BW |
1203 | while ((slice = ffs(dev_priv->l3_parity.which_slice)) != 0) { |
1204 | u32 reg; | |
e3689190 | 1205 | |
35a85ac6 BW |
1206 | slice--; |
1207 | if (WARN_ON_ONCE(slice >= NUM_L3_SLICES(dev_priv->dev))) | |
1208 | break; | |
e3689190 | 1209 | |
35a85ac6 | 1210 | dev_priv->l3_parity.which_slice &= ~(1<<slice); |
e3689190 | 1211 | |
35a85ac6 | 1212 | reg = GEN7_L3CDERRST1 + (slice * 0x200); |
e3689190 | 1213 | |
35a85ac6 BW |
1214 | error_status = I915_READ(reg); |
1215 | row = GEN7_PARITY_ERROR_ROW(error_status); | |
1216 | bank = GEN7_PARITY_ERROR_BANK(error_status); | |
1217 | subbank = GEN7_PARITY_ERROR_SUBBANK(error_status); | |
1218 | ||
1219 | I915_WRITE(reg, GEN7_PARITY_ERROR_VALID | GEN7_L3CDERRST1_ENABLE); | |
1220 | POSTING_READ(reg); | |
1221 | ||
1222 | parity_event[0] = I915_L3_PARITY_UEVENT "=1"; | |
1223 | parity_event[1] = kasprintf(GFP_KERNEL, "ROW=%d", row); | |
1224 | parity_event[2] = kasprintf(GFP_KERNEL, "BANK=%d", bank); | |
1225 | parity_event[3] = kasprintf(GFP_KERNEL, "SUBBANK=%d", subbank); | |
1226 | parity_event[4] = kasprintf(GFP_KERNEL, "SLICE=%d", slice); | |
1227 | parity_event[5] = NULL; | |
1228 | ||
5bdebb18 | 1229 | kobject_uevent_env(&dev_priv->dev->primary->kdev->kobj, |
35a85ac6 | 1230 | KOBJ_CHANGE, parity_event); |
e3689190 | 1231 | |
35a85ac6 BW |
1232 | DRM_DEBUG("Parity error: Slice = %d, Row = %d, Bank = %d, Sub bank = %d.\n", |
1233 | slice, row, bank, subbank); | |
e3689190 | 1234 | |
35a85ac6 BW |
1235 | kfree(parity_event[4]); |
1236 | kfree(parity_event[3]); | |
1237 | kfree(parity_event[2]); | |
1238 | kfree(parity_event[1]); | |
1239 | } | |
e3689190 | 1240 | |
35a85ac6 | 1241 | I915_WRITE(GEN7_MISCCPCTL, misccpctl); |
e3689190 | 1242 | |
35a85ac6 BW |
1243 | out: |
1244 | WARN_ON(dev_priv->l3_parity.which_slice); | |
1245 | spin_lock_irqsave(&dev_priv->irq_lock, flags); | |
1246 | ilk_enable_gt_irq(dev_priv, GT_PARITY_ERROR(dev_priv->dev)); | |
1247 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); | |
1248 | ||
1249 | mutex_unlock(&dev_priv->dev->struct_mutex); | |
e3689190 BW |
1250 | } |
1251 | ||
35a85ac6 | 1252 | static void ivybridge_parity_error_irq_handler(struct drm_device *dev, u32 iir) |
e3689190 BW |
1253 | { |
1254 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
e3689190 | 1255 | |
040d2baa | 1256 | if (!HAS_L3_DPF(dev)) |
e3689190 BW |
1257 | return; |
1258 | ||
d0ecd7e2 | 1259 | spin_lock(&dev_priv->irq_lock); |
35a85ac6 | 1260 | ilk_disable_gt_irq(dev_priv, GT_PARITY_ERROR(dev)); |
d0ecd7e2 | 1261 | spin_unlock(&dev_priv->irq_lock); |
e3689190 | 1262 | |
35a85ac6 BW |
1263 | iir &= GT_PARITY_ERROR(dev); |
1264 | if (iir & GT_RENDER_L3_PARITY_ERROR_INTERRUPT_S1) | |
1265 | dev_priv->l3_parity.which_slice |= 1 << 1; | |
1266 | ||
1267 | if (iir & GT_RENDER_L3_PARITY_ERROR_INTERRUPT) | |
1268 | dev_priv->l3_parity.which_slice |= 1 << 0; | |
1269 | ||
a4da4fa4 | 1270 | queue_work(dev_priv->wq, &dev_priv->l3_parity.error_work); |
e3689190 BW |
1271 | } |
1272 | ||
f1af8fc1 PZ |
1273 | static void ilk_gt_irq_handler(struct drm_device *dev, |
1274 | struct drm_i915_private *dev_priv, | |
1275 | u32 gt_iir) | |
1276 | { | |
1277 | if (gt_iir & | |
1278 | (GT_RENDER_USER_INTERRUPT | GT_RENDER_PIPECTL_NOTIFY_INTERRUPT)) | |
1279 | notify_ring(dev, &dev_priv->ring[RCS]); | |
1280 | if (gt_iir & ILK_BSD_USER_INTERRUPT) | |
1281 | notify_ring(dev, &dev_priv->ring[VCS]); | |
1282 | } | |
1283 | ||
e7b4c6b1 DV |
1284 | static void snb_gt_irq_handler(struct drm_device *dev, |
1285 | struct drm_i915_private *dev_priv, | |
1286 | u32 gt_iir) | |
1287 | { | |
1288 | ||
cc609d5d BW |
1289 | if (gt_iir & |
1290 | (GT_RENDER_USER_INTERRUPT | GT_RENDER_PIPECTL_NOTIFY_INTERRUPT)) | |
e7b4c6b1 | 1291 | notify_ring(dev, &dev_priv->ring[RCS]); |
cc609d5d | 1292 | if (gt_iir & GT_BSD_USER_INTERRUPT) |
e7b4c6b1 | 1293 | notify_ring(dev, &dev_priv->ring[VCS]); |
cc609d5d | 1294 | if (gt_iir & GT_BLT_USER_INTERRUPT) |
e7b4c6b1 DV |
1295 | notify_ring(dev, &dev_priv->ring[BCS]); |
1296 | ||
cc609d5d BW |
1297 | if (gt_iir & (GT_BLT_CS_ERROR_INTERRUPT | |
1298 | GT_BSD_CS_ERROR_INTERRUPT | | |
1299 | GT_RENDER_CS_MASTER_ERROR_INTERRUPT)) { | |
e7b4c6b1 DV |
1300 | DRM_ERROR("GT error interrupt 0x%08x\n", gt_iir); |
1301 | i915_handle_error(dev, false); | |
1302 | } | |
e3689190 | 1303 | |
35a85ac6 BW |
1304 | if (gt_iir & GT_PARITY_ERROR(dev)) |
1305 | ivybridge_parity_error_irq_handler(dev, gt_iir); | |
e7b4c6b1 DV |
1306 | } |
1307 | ||
abd58f01 BW |
1308 | static irqreturn_t gen8_gt_irq_handler(struct drm_device *dev, |
1309 | struct drm_i915_private *dev_priv, | |
1310 | u32 master_ctl) | |
1311 | { | |
1312 | u32 rcs, bcs, vcs; | |
1313 | uint32_t tmp = 0; | |
1314 | irqreturn_t ret = IRQ_NONE; | |
1315 | ||
1316 | if (master_ctl & (GEN8_GT_RCS_IRQ | GEN8_GT_BCS_IRQ)) { | |
1317 | tmp = I915_READ(GEN8_GT_IIR(0)); | |
1318 | if (tmp) { | |
1319 | ret = IRQ_HANDLED; | |
1320 | rcs = tmp >> GEN8_RCS_IRQ_SHIFT; | |
1321 | bcs = tmp >> GEN8_BCS_IRQ_SHIFT; | |
1322 | if (rcs & GT_RENDER_USER_INTERRUPT) | |
1323 | notify_ring(dev, &dev_priv->ring[RCS]); | |
1324 | if (bcs & GT_RENDER_USER_INTERRUPT) | |
1325 | notify_ring(dev, &dev_priv->ring[BCS]); | |
1326 | I915_WRITE(GEN8_GT_IIR(0), tmp); | |
1327 | } else | |
1328 | DRM_ERROR("The master control interrupt lied (GT0)!\n"); | |
1329 | } | |
1330 | ||
1331 | if (master_ctl & GEN8_GT_VCS1_IRQ) { | |
1332 | tmp = I915_READ(GEN8_GT_IIR(1)); | |
1333 | if (tmp) { | |
1334 | ret = IRQ_HANDLED; | |
1335 | vcs = tmp >> GEN8_VCS1_IRQ_SHIFT; | |
1336 | if (vcs & GT_RENDER_USER_INTERRUPT) | |
1337 | notify_ring(dev, &dev_priv->ring[VCS]); | |
1338 | I915_WRITE(GEN8_GT_IIR(1), tmp); | |
1339 | } else | |
1340 | DRM_ERROR("The master control interrupt lied (GT1)!\n"); | |
1341 | } | |
1342 | ||
1343 | if (master_ctl & GEN8_GT_VECS_IRQ) { | |
1344 | tmp = I915_READ(GEN8_GT_IIR(3)); | |
1345 | if (tmp) { | |
1346 | ret = IRQ_HANDLED; | |
1347 | vcs = tmp >> GEN8_VECS_IRQ_SHIFT; | |
1348 | if (vcs & GT_RENDER_USER_INTERRUPT) | |
1349 | notify_ring(dev, &dev_priv->ring[VECS]); | |
1350 | I915_WRITE(GEN8_GT_IIR(3), tmp); | |
1351 | } else | |
1352 | DRM_ERROR("The master control interrupt lied (GT3)!\n"); | |
1353 | } | |
1354 | ||
1355 | return ret; | |
1356 | } | |
1357 | ||
b543fb04 EE |
1358 | #define HPD_STORM_DETECT_PERIOD 1000 |
1359 | #define HPD_STORM_THRESHOLD 5 | |
1360 | ||
10a504de | 1361 | static inline void intel_hpd_irq_handler(struct drm_device *dev, |
22062dba DV |
1362 | u32 hotplug_trigger, |
1363 | const u32 *hpd) | |
b543fb04 EE |
1364 | { |
1365 | drm_i915_private_t *dev_priv = dev->dev_private; | |
b543fb04 | 1366 | int i; |
10a504de | 1367 | bool storm_detected = false; |
b543fb04 | 1368 | |
91d131d2 DV |
1369 | if (!hotplug_trigger) |
1370 | return; | |
1371 | ||
cc9bd499 ID |
1372 | DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", |
1373 | hotplug_trigger); | |
1374 | ||
b5ea2d56 | 1375 | spin_lock(&dev_priv->irq_lock); |
b543fb04 | 1376 | for (i = 1; i < HPD_NUM_PINS; i++) { |
821450c6 | 1377 | |
3432087e | 1378 | WARN_ONCE(hpd[i] & hotplug_trigger && |
8b5565b8 | 1379 | dev_priv->hpd_stats[i].hpd_mark == HPD_DISABLED, |
cba1c073 CW |
1380 | "Received HPD interrupt (0x%08x) on pin %d (0x%08x) although disabled\n", |
1381 | hotplug_trigger, i, hpd[i]); | |
b8f102e8 | 1382 | |
b543fb04 EE |
1383 | if (!(hpd[i] & hotplug_trigger) || |
1384 | dev_priv->hpd_stats[i].hpd_mark != HPD_ENABLED) | |
1385 | continue; | |
1386 | ||
bc5ead8c | 1387 | dev_priv->hpd_event_bits |= (1 << i); |
b543fb04 EE |
1388 | if (!time_in_range(jiffies, dev_priv->hpd_stats[i].hpd_last_jiffies, |
1389 | dev_priv->hpd_stats[i].hpd_last_jiffies | |
1390 | + msecs_to_jiffies(HPD_STORM_DETECT_PERIOD))) { | |
1391 | dev_priv->hpd_stats[i].hpd_last_jiffies = jiffies; | |
1392 | dev_priv->hpd_stats[i].hpd_cnt = 0; | |
b8f102e8 | 1393 | DRM_DEBUG_KMS("Received HPD interrupt on PIN %d - cnt: 0\n", i); |
b543fb04 EE |
1394 | } else if (dev_priv->hpd_stats[i].hpd_cnt > HPD_STORM_THRESHOLD) { |
1395 | dev_priv->hpd_stats[i].hpd_mark = HPD_MARK_DISABLED; | |
142e2398 | 1396 | dev_priv->hpd_event_bits &= ~(1 << i); |
b543fb04 | 1397 | DRM_DEBUG_KMS("HPD interrupt storm detected on PIN %d\n", i); |
10a504de | 1398 | storm_detected = true; |
b543fb04 EE |
1399 | } else { |
1400 | dev_priv->hpd_stats[i].hpd_cnt++; | |
b8f102e8 EE |
1401 | DRM_DEBUG_KMS("Received HPD interrupt on PIN %d - cnt: %d\n", i, |
1402 | dev_priv->hpd_stats[i].hpd_cnt); | |
b543fb04 EE |
1403 | } |
1404 | } | |
1405 | ||
10a504de DV |
1406 | if (storm_detected) |
1407 | dev_priv->display.hpd_irq_setup(dev); | |
b5ea2d56 | 1408 | spin_unlock(&dev_priv->irq_lock); |
5876fa0d | 1409 | |
645416f5 DV |
1410 | /* |
1411 | * Our hotplug handler can grab modeset locks (by calling down into the | |
1412 | * fb helpers). Hence it must not be run on our own dev-priv->wq work | |
1413 | * queue for otherwise the flush_work in the pageflip code will | |
1414 | * deadlock. | |
1415 | */ | |
1416 | schedule_work(&dev_priv->hotplug_work); | |
b543fb04 EE |
1417 | } |
1418 | ||
515ac2bb DV |
1419 | static void gmbus_irq_handler(struct drm_device *dev) |
1420 | { | |
28c70f16 DV |
1421 | struct drm_i915_private *dev_priv = (drm_i915_private_t *) dev->dev_private; |
1422 | ||
28c70f16 | 1423 | wake_up_all(&dev_priv->gmbus_wait_queue); |
515ac2bb DV |
1424 | } |
1425 | ||
ce99c256 DV |
1426 | static void dp_aux_irq_handler(struct drm_device *dev) |
1427 | { | |
9ee32fea DV |
1428 | struct drm_i915_private *dev_priv = (drm_i915_private_t *) dev->dev_private; |
1429 | ||
9ee32fea | 1430 | wake_up_all(&dev_priv->gmbus_wait_queue); |
ce99c256 DV |
1431 | } |
1432 | ||
8bf1e9f1 | 1433 | #if defined(CONFIG_DEBUG_FS) |
277de95e DV |
1434 | static void display_pipe_crc_irq_handler(struct drm_device *dev, enum pipe pipe, |
1435 | uint32_t crc0, uint32_t crc1, | |
1436 | uint32_t crc2, uint32_t crc3, | |
1437 | uint32_t crc4) | |
8bf1e9f1 SH |
1438 | { |
1439 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1440 | struct intel_pipe_crc *pipe_crc = &dev_priv->pipe_crc[pipe]; | |
1441 | struct intel_pipe_crc_entry *entry; | |
ac2300d4 | 1442 | int head, tail; |
b2c88f5b | 1443 | |
d538bbdf DL |
1444 | spin_lock(&pipe_crc->lock); |
1445 | ||
0c912c79 | 1446 | if (!pipe_crc->entries) { |
d538bbdf | 1447 | spin_unlock(&pipe_crc->lock); |
0c912c79 DL |
1448 | DRM_ERROR("spurious interrupt\n"); |
1449 | return; | |
1450 | } | |
1451 | ||
d538bbdf DL |
1452 | head = pipe_crc->head; |
1453 | tail = pipe_crc->tail; | |
b2c88f5b DL |
1454 | |
1455 | if (CIRC_SPACE(head, tail, INTEL_PIPE_CRC_ENTRIES_NR) < 1) { | |
d538bbdf | 1456 | spin_unlock(&pipe_crc->lock); |
b2c88f5b DL |
1457 | DRM_ERROR("CRC buffer overflowing\n"); |
1458 | return; | |
1459 | } | |
1460 | ||
1461 | entry = &pipe_crc->entries[head]; | |
8bf1e9f1 | 1462 | |
8bc5e955 | 1463 | entry->frame = dev->driver->get_vblank_counter(dev, pipe); |
eba94eb9 DV |
1464 | entry->crc[0] = crc0; |
1465 | entry->crc[1] = crc1; | |
1466 | entry->crc[2] = crc2; | |
1467 | entry->crc[3] = crc3; | |
1468 | entry->crc[4] = crc4; | |
b2c88f5b DL |
1469 | |
1470 | head = (head + 1) & (INTEL_PIPE_CRC_ENTRIES_NR - 1); | |
d538bbdf DL |
1471 | pipe_crc->head = head; |
1472 | ||
1473 | spin_unlock(&pipe_crc->lock); | |
07144428 DL |
1474 | |
1475 | wake_up_interruptible(&pipe_crc->wq); | |
8bf1e9f1 | 1476 | } |
277de95e DV |
1477 | #else |
1478 | static inline void | |
1479 | display_pipe_crc_irq_handler(struct drm_device *dev, enum pipe pipe, | |
1480 | uint32_t crc0, uint32_t crc1, | |
1481 | uint32_t crc2, uint32_t crc3, | |
1482 | uint32_t crc4) {} | |
1483 | #endif | |
1484 | ||
eba94eb9 | 1485 | |
277de95e | 1486 | static void hsw_pipe_crc_irq_handler(struct drm_device *dev, enum pipe pipe) |
5a69b89f DV |
1487 | { |
1488 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1489 | ||
277de95e DV |
1490 | display_pipe_crc_irq_handler(dev, pipe, |
1491 | I915_READ(PIPE_CRC_RES_1_IVB(pipe)), | |
1492 | 0, 0, 0, 0); | |
5a69b89f DV |
1493 | } |
1494 | ||
277de95e | 1495 | static void ivb_pipe_crc_irq_handler(struct drm_device *dev, enum pipe pipe) |
eba94eb9 DV |
1496 | { |
1497 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1498 | ||
277de95e DV |
1499 | display_pipe_crc_irq_handler(dev, pipe, |
1500 | I915_READ(PIPE_CRC_RES_1_IVB(pipe)), | |
1501 | I915_READ(PIPE_CRC_RES_2_IVB(pipe)), | |
1502 | I915_READ(PIPE_CRC_RES_3_IVB(pipe)), | |
1503 | I915_READ(PIPE_CRC_RES_4_IVB(pipe)), | |
1504 | I915_READ(PIPE_CRC_RES_5_IVB(pipe))); | |
eba94eb9 | 1505 | } |
5b3a856b | 1506 | |
277de95e | 1507 | static void i9xx_pipe_crc_irq_handler(struct drm_device *dev, enum pipe pipe) |
5b3a856b DV |
1508 | { |
1509 | struct drm_i915_private *dev_priv = dev->dev_private; | |
0b5c5ed0 DV |
1510 | uint32_t res1, res2; |
1511 | ||
1512 | if (INTEL_INFO(dev)->gen >= 3) | |
1513 | res1 = I915_READ(PIPE_CRC_RES_RES1_I915(pipe)); | |
1514 | else | |
1515 | res1 = 0; | |
1516 | ||
1517 | if (INTEL_INFO(dev)->gen >= 5 || IS_G4X(dev)) | |
1518 | res2 = I915_READ(PIPE_CRC_RES_RES2_G4X(pipe)); | |
1519 | else | |
1520 | res2 = 0; | |
5b3a856b | 1521 | |
277de95e DV |
1522 | display_pipe_crc_irq_handler(dev, pipe, |
1523 | I915_READ(PIPE_CRC_RES_RED(pipe)), | |
1524 | I915_READ(PIPE_CRC_RES_GREEN(pipe)), | |
1525 | I915_READ(PIPE_CRC_RES_BLUE(pipe)), | |
1526 | res1, res2); | |
5b3a856b | 1527 | } |
8bf1e9f1 | 1528 | |
1403c0d4 PZ |
1529 | /* The RPS events need forcewake, so we add them to a work queue and mask their |
1530 | * IMR bits until the work is done. Other interrupts can be processed without | |
1531 | * the work queue. */ | |
1532 | static void gen6_rps_irq_handler(struct drm_i915_private *dev_priv, u32 pm_iir) | |
baf02a1f | 1533 | { |
41a05a3a | 1534 | if (pm_iir & GEN6_PM_RPS_EVENTS) { |
59cdb63d | 1535 | spin_lock(&dev_priv->irq_lock); |
41a05a3a | 1536 | dev_priv->rps.pm_iir |= pm_iir & GEN6_PM_RPS_EVENTS; |
4d3b3d5f | 1537 | snb_disable_pm_irq(dev_priv, pm_iir & GEN6_PM_RPS_EVENTS); |
59cdb63d | 1538 | spin_unlock(&dev_priv->irq_lock); |
2adbee62 DV |
1539 | |
1540 | queue_work(dev_priv->wq, &dev_priv->rps.work); | |
baf02a1f | 1541 | } |
baf02a1f | 1542 | |
1403c0d4 PZ |
1543 | if (HAS_VEBOX(dev_priv->dev)) { |
1544 | if (pm_iir & PM_VEBOX_USER_INTERRUPT) | |
1545 | notify_ring(dev_priv->dev, &dev_priv->ring[VECS]); | |
12638c57 | 1546 | |
1403c0d4 PZ |
1547 | if (pm_iir & PM_VEBOX_CS_ERROR_INTERRUPT) { |
1548 | DRM_ERROR("VEBOX CS error interrupt 0x%08x\n", pm_iir); | |
1549 | i915_handle_error(dev_priv->dev, false); | |
1550 | } | |
12638c57 | 1551 | } |
baf02a1f BW |
1552 | } |
1553 | ||
c1874ed7 ID |
1554 | static void valleyview_pipestat_irq_handler(struct drm_device *dev, u32 iir) |
1555 | { | |
1556 | struct drm_i915_private *dev_priv = dev->dev_private; | |
91d181dd | 1557 | u32 pipe_stats[I915_MAX_PIPES] = { }; |
c1874ed7 ID |
1558 | int pipe; |
1559 | ||
58ead0d7 | 1560 | spin_lock(&dev_priv->irq_lock); |
c1874ed7 | 1561 | for_each_pipe(pipe) { |
91d181dd | 1562 | int reg; |
bbb5eebf | 1563 | u32 mask, iir_bit = 0; |
91d181dd | 1564 | |
bbb5eebf DV |
1565 | /* |
1566 | * PIPESTAT bits get signalled even when the interrupt is | |
1567 | * disabled with the mask bits, and some of the status bits do | |
1568 | * not generate interrupts at all (like the underrun bit). Hence | |
1569 | * we need to be careful that we only handle what we want to | |
1570 | * handle. | |
1571 | */ | |
1572 | mask = 0; | |
1573 | if (__cpu_fifo_underrun_reporting_enabled(dev, pipe)) | |
1574 | mask |= PIPE_FIFO_UNDERRUN_STATUS; | |
1575 | ||
1576 | switch (pipe) { | |
1577 | case PIPE_A: | |
1578 | iir_bit = I915_DISPLAY_PIPE_A_EVENT_INTERRUPT; | |
1579 | break; | |
1580 | case PIPE_B: | |
1581 | iir_bit = I915_DISPLAY_PIPE_B_EVENT_INTERRUPT; | |
1582 | break; | |
1583 | } | |
1584 | if (iir & iir_bit) | |
1585 | mask |= dev_priv->pipestat_irq_mask[pipe]; | |
1586 | ||
1587 | if (!mask) | |
91d181dd ID |
1588 | continue; |
1589 | ||
1590 | reg = PIPESTAT(pipe); | |
bbb5eebf DV |
1591 | mask |= PIPESTAT_INT_ENABLE_MASK; |
1592 | pipe_stats[pipe] = I915_READ(reg) & mask; | |
c1874ed7 ID |
1593 | |
1594 | /* | |
1595 | * Clear the PIPE*STAT regs before the IIR | |
1596 | */ | |
91d181dd ID |
1597 | if (pipe_stats[pipe] & (PIPE_FIFO_UNDERRUN_STATUS | |
1598 | PIPESTAT_INT_STATUS_MASK)) | |
c1874ed7 ID |
1599 | I915_WRITE(reg, pipe_stats[pipe]); |
1600 | } | |
58ead0d7 | 1601 | spin_unlock(&dev_priv->irq_lock); |
c1874ed7 ID |
1602 | |
1603 | for_each_pipe(pipe) { | |
1604 | if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS) | |
1605 | drm_handle_vblank(dev, pipe); | |
1606 | ||
579a9b0e | 1607 | if (pipe_stats[pipe] & PLANE_FLIP_DONE_INT_STATUS_VLV) { |
c1874ed7 ID |
1608 | intel_prepare_page_flip(dev, pipe); |
1609 | intel_finish_page_flip(dev, pipe); | |
1610 | } | |
1611 | ||
1612 | if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS) | |
1613 | i9xx_pipe_crc_irq_handler(dev, pipe); | |
1614 | ||
1615 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS && | |
1616 | intel_set_cpu_fifo_underrun_reporting(dev, pipe, false)) | |
1617 | DRM_ERROR("pipe %c underrun\n", pipe_name(pipe)); | |
1618 | } | |
1619 | ||
1620 | if (pipe_stats[0] & PIPE_GMBUS_INTERRUPT_STATUS) | |
1621 | gmbus_irq_handler(dev); | |
1622 | } | |
1623 | ||
ff1f525e | 1624 | static irqreturn_t valleyview_irq_handler(int irq, void *arg) |
7e231dbe JB |
1625 | { |
1626 | struct drm_device *dev = (struct drm_device *) arg; | |
1627 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1628 | u32 iir, gt_iir, pm_iir; | |
1629 | irqreturn_t ret = IRQ_NONE; | |
7e231dbe | 1630 | |
7e231dbe JB |
1631 | while (true) { |
1632 | iir = I915_READ(VLV_IIR); | |
1633 | gt_iir = I915_READ(GTIIR); | |
1634 | pm_iir = I915_READ(GEN6_PMIIR); | |
1635 | ||
1636 | if (gt_iir == 0 && pm_iir == 0 && iir == 0) | |
1637 | goto out; | |
1638 | ||
1639 | ret = IRQ_HANDLED; | |
1640 | ||
e7b4c6b1 | 1641 | snb_gt_irq_handler(dev, dev_priv, gt_iir); |
7e231dbe | 1642 | |
c1874ed7 | 1643 | valleyview_pipestat_irq_handler(dev, iir); |
31acc7f5 | 1644 | |
7e231dbe JB |
1645 | /* Consume port. Then clear IIR or we'll miss events */ |
1646 | if (iir & I915_DISPLAY_PORT_INTERRUPT) { | |
1647 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); | |
b543fb04 | 1648 | u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_I915; |
7e231dbe | 1649 | |
91d131d2 DV |
1650 | intel_hpd_irq_handler(dev, hotplug_trigger, hpd_status_i915); |
1651 | ||
4aeebd74 DV |
1652 | if (hotplug_status & DP_AUX_CHANNEL_MASK_INT_STATUS_G4X) |
1653 | dp_aux_irq_handler(dev); | |
1654 | ||
7e231dbe JB |
1655 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); |
1656 | I915_READ(PORT_HOTPLUG_STAT); | |
1657 | } | |
1658 | ||
7e231dbe | 1659 | |
60611c13 | 1660 | if (pm_iir) |
d0ecd7e2 | 1661 | gen6_rps_irq_handler(dev_priv, pm_iir); |
7e231dbe JB |
1662 | |
1663 | I915_WRITE(GTIIR, gt_iir); | |
1664 | I915_WRITE(GEN6_PMIIR, pm_iir); | |
1665 | I915_WRITE(VLV_IIR, iir); | |
1666 | } | |
1667 | ||
1668 | out: | |
1669 | return ret; | |
1670 | } | |
1671 | ||
23e81d69 | 1672 | static void ibx_irq_handler(struct drm_device *dev, u32 pch_iir) |
776ad806 JB |
1673 | { |
1674 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
9db4a9c7 | 1675 | int pipe; |
b543fb04 | 1676 | u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK; |
776ad806 | 1677 | |
91d131d2 DV |
1678 | intel_hpd_irq_handler(dev, hotplug_trigger, hpd_ibx); |
1679 | ||
cfc33bf7 VS |
1680 | if (pch_iir & SDE_AUDIO_POWER_MASK) { |
1681 | int port = ffs((pch_iir & SDE_AUDIO_POWER_MASK) >> | |
1682 | SDE_AUDIO_POWER_SHIFT); | |
776ad806 | 1683 | DRM_DEBUG_DRIVER("PCH audio power change on port %d\n", |
cfc33bf7 VS |
1684 | port_name(port)); |
1685 | } | |
776ad806 | 1686 | |
ce99c256 DV |
1687 | if (pch_iir & SDE_AUX_MASK) |
1688 | dp_aux_irq_handler(dev); | |
1689 | ||
776ad806 | 1690 | if (pch_iir & SDE_GMBUS) |
515ac2bb | 1691 | gmbus_irq_handler(dev); |
776ad806 JB |
1692 | |
1693 | if (pch_iir & SDE_AUDIO_HDCP_MASK) | |
1694 | DRM_DEBUG_DRIVER("PCH HDCP audio interrupt\n"); | |
1695 | ||
1696 | if (pch_iir & SDE_AUDIO_TRANS_MASK) | |
1697 | DRM_DEBUG_DRIVER("PCH transcoder audio interrupt\n"); | |
1698 | ||
1699 | if (pch_iir & SDE_POISON) | |
1700 | DRM_ERROR("PCH poison interrupt\n"); | |
1701 | ||
9db4a9c7 JB |
1702 | if (pch_iir & SDE_FDI_MASK) |
1703 | for_each_pipe(pipe) | |
1704 | DRM_DEBUG_DRIVER(" pipe %c FDI IIR: 0x%08x\n", | |
1705 | pipe_name(pipe), | |
1706 | I915_READ(FDI_RX_IIR(pipe))); | |
776ad806 JB |
1707 | |
1708 | if (pch_iir & (SDE_TRANSB_CRC_DONE | SDE_TRANSA_CRC_DONE)) | |
1709 | DRM_DEBUG_DRIVER("PCH transcoder CRC done interrupt\n"); | |
1710 | ||
1711 | if (pch_iir & (SDE_TRANSB_CRC_ERR | SDE_TRANSA_CRC_ERR)) | |
1712 | DRM_DEBUG_DRIVER("PCH transcoder CRC error interrupt\n"); | |
1713 | ||
776ad806 | 1714 | if (pch_iir & SDE_TRANSA_FIFO_UNDER) |
8664281b PZ |
1715 | if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_A, |
1716 | false)) | |
fc2c807b | 1717 | DRM_ERROR("PCH transcoder A FIFO underrun\n"); |
8664281b PZ |
1718 | |
1719 | if (pch_iir & SDE_TRANSB_FIFO_UNDER) | |
1720 | if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_B, | |
1721 | false)) | |
fc2c807b | 1722 | DRM_ERROR("PCH transcoder B FIFO underrun\n"); |
8664281b PZ |
1723 | } |
1724 | ||
1725 | static void ivb_err_int_handler(struct drm_device *dev) | |
1726 | { | |
1727 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1728 | u32 err_int = I915_READ(GEN7_ERR_INT); | |
5a69b89f | 1729 | enum pipe pipe; |
8664281b | 1730 | |
de032bf4 PZ |
1731 | if (err_int & ERR_INT_POISON) |
1732 | DRM_ERROR("Poison interrupt\n"); | |
1733 | ||
5a69b89f DV |
1734 | for_each_pipe(pipe) { |
1735 | if (err_int & ERR_INT_FIFO_UNDERRUN(pipe)) { | |
1736 | if (intel_set_cpu_fifo_underrun_reporting(dev, pipe, | |
1737 | false)) | |
fc2c807b VS |
1738 | DRM_ERROR("Pipe %c FIFO underrun\n", |
1739 | pipe_name(pipe)); | |
5a69b89f | 1740 | } |
8bf1e9f1 | 1741 | |
5a69b89f DV |
1742 | if (err_int & ERR_INT_PIPE_CRC_DONE(pipe)) { |
1743 | if (IS_IVYBRIDGE(dev)) | |
277de95e | 1744 | ivb_pipe_crc_irq_handler(dev, pipe); |
5a69b89f | 1745 | else |
277de95e | 1746 | hsw_pipe_crc_irq_handler(dev, pipe); |
5a69b89f DV |
1747 | } |
1748 | } | |
8bf1e9f1 | 1749 | |
8664281b PZ |
1750 | I915_WRITE(GEN7_ERR_INT, err_int); |
1751 | } | |
1752 | ||
1753 | static void cpt_serr_int_handler(struct drm_device *dev) | |
1754 | { | |
1755 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1756 | u32 serr_int = I915_READ(SERR_INT); | |
1757 | ||
de032bf4 PZ |
1758 | if (serr_int & SERR_INT_POISON) |
1759 | DRM_ERROR("PCH poison interrupt\n"); | |
1760 | ||
8664281b PZ |
1761 | if (serr_int & SERR_INT_TRANS_A_FIFO_UNDERRUN) |
1762 | if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_A, | |
1763 | false)) | |
fc2c807b | 1764 | DRM_ERROR("PCH transcoder A FIFO underrun\n"); |
8664281b PZ |
1765 | |
1766 | if (serr_int & SERR_INT_TRANS_B_FIFO_UNDERRUN) | |
1767 | if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_B, | |
1768 | false)) | |
fc2c807b | 1769 | DRM_ERROR("PCH transcoder B FIFO underrun\n"); |
8664281b PZ |
1770 | |
1771 | if (serr_int & SERR_INT_TRANS_C_FIFO_UNDERRUN) | |
1772 | if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_C, | |
1773 | false)) | |
fc2c807b | 1774 | DRM_ERROR("PCH transcoder C FIFO underrun\n"); |
8664281b PZ |
1775 | |
1776 | I915_WRITE(SERR_INT, serr_int); | |
776ad806 JB |
1777 | } |
1778 | ||
23e81d69 AJ |
1779 | static void cpt_irq_handler(struct drm_device *dev, u32 pch_iir) |
1780 | { | |
1781 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1782 | int pipe; | |
b543fb04 | 1783 | u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK_CPT; |
23e81d69 | 1784 | |
91d131d2 DV |
1785 | intel_hpd_irq_handler(dev, hotplug_trigger, hpd_cpt); |
1786 | ||
cfc33bf7 VS |
1787 | if (pch_iir & SDE_AUDIO_POWER_MASK_CPT) { |
1788 | int port = ffs((pch_iir & SDE_AUDIO_POWER_MASK_CPT) >> | |
1789 | SDE_AUDIO_POWER_SHIFT_CPT); | |
1790 | DRM_DEBUG_DRIVER("PCH audio power change on port %c\n", | |
1791 | port_name(port)); | |
1792 | } | |
23e81d69 AJ |
1793 | |
1794 | if (pch_iir & SDE_AUX_MASK_CPT) | |
ce99c256 | 1795 | dp_aux_irq_handler(dev); |
23e81d69 AJ |
1796 | |
1797 | if (pch_iir & SDE_GMBUS_CPT) | |
515ac2bb | 1798 | gmbus_irq_handler(dev); |
23e81d69 AJ |
1799 | |
1800 | if (pch_iir & SDE_AUDIO_CP_REQ_CPT) | |
1801 | DRM_DEBUG_DRIVER("Audio CP request interrupt\n"); | |
1802 | ||
1803 | if (pch_iir & SDE_AUDIO_CP_CHG_CPT) | |
1804 | DRM_DEBUG_DRIVER("Audio CP change interrupt\n"); | |
1805 | ||
1806 | if (pch_iir & SDE_FDI_MASK_CPT) | |
1807 | for_each_pipe(pipe) | |
1808 | DRM_DEBUG_DRIVER(" pipe %c FDI IIR: 0x%08x\n", | |
1809 | pipe_name(pipe), | |
1810 | I915_READ(FDI_RX_IIR(pipe))); | |
8664281b PZ |
1811 | |
1812 | if (pch_iir & SDE_ERROR_CPT) | |
1813 | cpt_serr_int_handler(dev); | |
23e81d69 AJ |
1814 | } |
1815 | ||
c008bc6e PZ |
1816 | static void ilk_display_irq_handler(struct drm_device *dev, u32 de_iir) |
1817 | { | |
1818 | struct drm_i915_private *dev_priv = dev->dev_private; | |
40da17c2 | 1819 | enum pipe pipe; |
c008bc6e PZ |
1820 | |
1821 | if (de_iir & DE_AUX_CHANNEL_A) | |
1822 | dp_aux_irq_handler(dev); | |
1823 | ||
1824 | if (de_iir & DE_GSE) | |
1825 | intel_opregion_asle_intr(dev); | |
1826 | ||
c008bc6e PZ |
1827 | if (de_iir & DE_POISON) |
1828 | DRM_ERROR("Poison interrupt\n"); | |
1829 | ||
40da17c2 DV |
1830 | for_each_pipe(pipe) { |
1831 | if (de_iir & DE_PIPE_VBLANK(pipe)) | |
1832 | drm_handle_vblank(dev, pipe); | |
5b3a856b | 1833 | |
40da17c2 DV |
1834 | if (de_iir & DE_PIPE_FIFO_UNDERRUN(pipe)) |
1835 | if (intel_set_cpu_fifo_underrun_reporting(dev, pipe, false)) | |
fc2c807b VS |
1836 | DRM_ERROR("Pipe %c FIFO underrun\n", |
1837 | pipe_name(pipe)); | |
5b3a856b | 1838 | |
40da17c2 DV |
1839 | if (de_iir & DE_PIPE_CRC_DONE(pipe)) |
1840 | i9xx_pipe_crc_irq_handler(dev, pipe); | |
c008bc6e | 1841 | |
40da17c2 DV |
1842 | /* plane/pipes map 1:1 on ilk+ */ |
1843 | if (de_iir & DE_PLANE_FLIP_DONE(pipe)) { | |
1844 | intel_prepare_page_flip(dev, pipe); | |
1845 | intel_finish_page_flip_plane(dev, pipe); | |
1846 | } | |
c008bc6e PZ |
1847 | } |
1848 | ||
1849 | /* check event from PCH */ | |
1850 | if (de_iir & DE_PCH_EVENT) { | |
1851 | u32 pch_iir = I915_READ(SDEIIR); | |
1852 | ||
1853 | if (HAS_PCH_CPT(dev)) | |
1854 | cpt_irq_handler(dev, pch_iir); | |
1855 | else | |
1856 | ibx_irq_handler(dev, pch_iir); | |
1857 | ||
1858 | /* should clear PCH hotplug event before clear CPU irq */ | |
1859 | I915_WRITE(SDEIIR, pch_iir); | |
1860 | } | |
1861 | ||
1862 | if (IS_GEN5(dev) && de_iir & DE_PCU_EVENT) | |
1863 | ironlake_rps_change_irq_handler(dev); | |
1864 | } | |
1865 | ||
9719fb98 PZ |
1866 | static void ivb_display_irq_handler(struct drm_device *dev, u32 de_iir) |
1867 | { | |
1868 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3b6c42e8 | 1869 | enum pipe i; |
9719fb98 PZ |
1870 | |
1871 | if (de_iir & DE_ERR_INT_IVB) | |
1872 | ivb_err_int_handler(dev); | |
1873 | ||
1874 | if (de_iir & DE_AUX_CHANNEL_A_IVB) | |
1875 | dp_aux_irq_handler(dev); | |
1876 | ||
1877 | if (de_iir & DE_GSE_IVB) | |
1878 | intel_opregion_asle_intr(dev); | |
1879 | ||
3b6c42e8 | 1880 | for_each_pipe(i) { |
40da17c2 | 1881 | if (de_iir & (DE_PIPE_VBLANK_IVB(i))) |
9719fb98 | 1882 | drm_handle_vblank(dev, i); |
40da17c2 DV |
1883 | |
1884 | /* plane/pipes map 1:1 on ilk+ */ | |
1885 | if (de_iir & DE_PLANE_FLIP_DONE_IVB(i)) { | |
9719fb98 PZ |
1886 | intel_prepare_page_flip(dev, i); |
1887 | intel_finish_page_flip_plane(dev, i); | |
1888 | } | |
1889 | } | |
1890 | ||
1891 | /* check event from PCH */ | |
1892 | if (!HAS_PCH_NOP(dev) && (de_iir & DE_PCH_EVENT_IVB)) { | |
1893 | u32 pch_iir = I915_READ(SDEIIR); | |
1894 | ||
1895 | cpt_irq_handler(dev, pch_iir); | |
1896 | ||
1897 | /* clear PCH hotplug event before clear CPU irq */ | |
1898 | I915_WRITE(SDEIIR, pch_iir); | |
1899 | } | |
1900 | } | |
1901 | ||
f1af8fc1 | 1902 | static irqreturn_t ironlake_irq_handler(int irq, void *arg) |
b1f14ad0 JB |
1903 | { |
1904 | struct drm_device *dev = (struct drm_device *) arg; | |
1905 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
f1af8fc1 | 1906 | u32 de_iir, gt_iir, de_ier, sde_ier = 0; |
0e43406b | 1907 | irqreturn_t ret = IRQ_NONE; |
b1f14ad0 | 1908 | |
8664281b PZ |
1909 | /* We get interrupts on unclaimed registers, so check for this before we |
1910 | * do any I915_{READ,WRITE}. */ | |
907b28c5 | 1911 | intel_uncore_check_errors(dev); |
8664281b | 1912 | |
b1f14ad0 JB |
1913 | /* disable master interrupt before clearing iir */ |
1914 | de_ier = I915_READ(DEIER); | |
1915 | I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL); | |
23a78516 | 1916 | POSTING_READ(DEIER); |
b1f14ad0 | 1917 | |
44498aea PZ |
1918 | /* Disable south interrupts. We'll only write to SDEIIR once, so further |
1919 | * interrupts will will be stored on its back queue, and then we'll be | |
1920 | * able to process them after we restore SDEIER (as soon as we restore | |
1921 | * it, we'll get an interrupt if SDEIIR still has something to process | |
1922 | * due to its back queue). */ | |
ab5c608b BW |
1923 | if (!HAS_PCH_NOP(dev)) { |
1924 | sde_ier = I915_READ(SDEIER); | |
1925 | I915_WRITE(SDEIER, 0); | |
1926 | POSTING_READ(SDEIER); | |
1927 | } | |
44498aea | 1928 | |
b1f14ad0 | 1929 | gt_iir = I915_READ(GTIIR); |
0e43406b | 1930 | if (gt_iir) { |
d8fc8a47 | 1931 | if (INTEL_INFO(dev)->gen >= 6) |
f1af8fc1 | 1932 | snb_gt_irq_handler(dev, dev_priv, gt_iir); |
d8fc8a47 PZ |
1933 | else |
1934 | ilk_gt_irq_handler(dev, dev_priv, gt_iir); | |
0e43406b CW |
1935 | I915_WRITE(GTIIR, gt_iir); |
1936 | ret = IRQ_HANDLED; | |
b1f14ad0 JB |
1937 | } |
1938 | ||
0e43406b CW |
1939 | de_iir = I915_READ(DEIIR); |
1940 | if (de_iir) { | |
f1af8fc1 PZ |
1941 | if (INTEL_INFO(dev)->gen >= 7) |
1942 | ivb_display_irq_handler(dev, de_iir); | |
1943 | else | |
1944 | ilk_display_irq_handler(dev, de_iir); | |
0e43406b CW |
1945 | I915_WRITE(DEIIR, de_iir); |
1946 | ret = IRQ_HANDLED; | |
b1f14ad0 JB |
1947 | } |
1948 | ||
f1af8fc1 PZ |
1949 | if (INTEL_INFO(dev)->gen >= 6) { |
1950 | u32 pm_iir = I915_READ(GEN6_PMIIR); | |
1951 | if (pm_iir) { | |
1403c0d4 | 1952 | gen6_rps_irq_handler(dev_priv, pm_iir); |
f1af8fc1 PZ |
1953 | I915_WRITE(GEN6_PMIIR, pm_iir); |
1954 | ret = IRQ_HANDLED; | |
1955 | } | |
0e43406b | 1956 | } |
b1f14ad0 | 1957 | |
b1f14ad0 JB |
1958 | I915_WRITE(DEIER, de_ier); |
1959 | POSTING_READ(DEIER); | |
ab5c608b BW |
1960 | if (!HAS_PCH_NOP(dev)) { |
1961 | I915_WRITE(SDEIER, sde_ier); | |
1962 | POSTING_READ(SDEIER); | |
1963 | } | |
b1f14ad0 JB |
1964 | |
1965 | return ret; | |
1966 | } | |
1967 | ||
abd58f01 BW |
1968 | static irqreturn_t gen8_irq_handler(int irq, void *arg) |
1969 | { | |
1970 | struct drm_device *dev = arg; | |
1971 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1972 | u32 master_ctl; | |
1973 | irqreturn_t ret = IRQ_NONE; | |
1974 | uint32_t tmp = 0; | |
c42664cc | 1975 | enum pipe pipe; |
abd58f01 | 1976 | |
abd58f01 BW |
1977 | master_ctl = I915_READ(GEN8_MASTER_IRQ); |
1978 | master_ctl &= ~GEN8_MASTER_IRQ_CONTROL; | |
1979 | if (!master_ctl) | |
1980 | return IRQ_NONE; | |
1981 | ||
1982 | I915_WRITE(GEN8_MASTER_IRQ, 0); | |
1983 | POSTING_READ(GEN8_MASTER_IRQ); | |
1984 | ||
1985 | ret = gen8_gt_irq_handler(dev, dev_priv, master_ctl); | |
1986 | ||
1987 | if (master_ctl & GEN8_DE_MISC_IRQ) { | |
1988 | tmp = I915_READ(GEN8_DE_MISC_IIR); | |
1989 | if (tmp & GEN8_DE_MISC_GSE) | |
1990 | intel_opregion_asle_intr(dev); | |
1991 | else if (tmp) | |
1992 | DRM_ERROR("Unexpected DE Misc interrupt\n"); | |
1993 | else | |
1994 | DRM_ERROR("The master control interrupt lied (DE MISC)!\n"); | |
1995 | ||
1996 | if (tmp) { | |
1997 | I915_WRITE(GEN8_DE_MISC_IIR, tmp); | |
1998 | ret = IRQ_HANDLED; | |
1999 | } | |
2000 | } | |
2001 | ||
6d766f02 DV |
2002 | if (master_ctl & GEN8_DE_PORT_IRQ) { |
2003 | tmp = I915_READ(GEN8_DE_PORT_IIR); | |
2004 | if (tmp & GEN8_AUX_CHANNEL_A) | |
2005 | dp_aux_irq_handler(dev); | |
2006 | else if (tmp) | |
2007 | DRM_ERROR("Unexpected DE Port interrupt\n"); | |
2008 | else | |
2009 | DRM_ERROR("The master control interrupt lied (DE PORT)!\n"); | |
2010 | ||
2011 | if (tmp) { | |
2012 | I915_WRITE(GEN8_DE_PORT_IIR, tmp); | |
2013 | ret = IRQ_HANDLED; | |
2014 | } | |
2015 | } | |
2016 | ||
c42664cc DV |
2017 | for_each_pipe(pipe) { |
2018 | uint32_t pipe_iir; | |
abd58f01 | 2019 | |
c42664cc DV |
2020 | if (!(master_ctl & GEN8_DE_PIPE_IRQ(pipe))) |
2021 | continue; | |
abd58f01 | 2022 | |
c42664cc DV |
2023 | pipe_iir = I915_READ(GEN8_DE_PIPE_IIR(pipe)); |
2024 | if (pipe_iir & GEN8_PIPE_VBLANK) | |
2025 | drm_handle_vblank(dev, pipe); | |
abd58f01 | 2026 | |
c42664cc DV |
2027 | if (pipe_iir & GEN8_PIPE_FLIP_DONE) { |
2028 | intel_prepare_page_flip(dev, pipe); | |
2029 | intel_finish_page_flip_plane(dev, pipe); | |
abd58f01 | 2030 | } |
c42664cc | 2031 | |
0fbe7870 DV |
2032 | if (pipe_iir & GEN8_PIPE_CDCLK_CRC_DONE) |
2033 | hsw_pipe_crc_irq_handler(dev, pipe); | |
2034 | ||
38d83c96 DV |
2035 | if (pipe_iir & GEN8_PIPE_FIFO_UNDERRUN) { |
2036 | if (intel_set_cpu_fifo_underrun_reporting(dev, pipe, | |
2037 | false)) | |
fc2c807b VS |
2038 | DRM_ERROR("Pipe %c FIFO underrun\n", |
2039 | pipe_name(pipe)); | |
38d83c96 DV |
2040 | } |
2041 | ||
30100f2b DV |
2042 | if (pipe_iir & GEN8_DE_PIPE_IRQ_FAULT_ERRORS) { |
2043 | DRM_ERROR("Fault errors on pipe %c\n: 0x%08x", | |
2044 | pipe_name(pipe), | |
2045 | pipe_iir & GEN8_DE_PIPE_IRQ_FAULT_ERRORS); | |
2046 | } | |
c42664cc DV |
2047 | |
2048 | if (pipe_iir) { | |
2049 | ret = IRQ_HANDLED; | |
2050 | I915_WRITE(GEN8_DE_PIPE_IIR(pipe), pipe_iir); | |
2051 | } else | |
abd58f01 BW |
2052 | DRM_ERROR("The master control interrupt lied (DE PIPE)!\n"); |
2053 | } | |
2054 | ||
92d03a80 DV |
2055 | if (!HAS_PCH_NOP(dev) && master_ctl & GEN8_DE_PCH_IRQ) { |
2056 | /* | |
2057 | * FIXME(BDW): Assume for now that the new interrupt handling | |
2058 | * scheme also closed the SDE interrupt handling race we've seen | |
2059 | * on older pch-split platforms. But this needs testing. | |
2060 | */ | |
2061 | u32 pch_iir = I915_READ(SDEIIR); | |
2062 | ||
2063 | cpt_irq_handler(dev, pch_iir); | |
2064 | ||
2065 | if (pch_iir) { | |
2066 | I915_WRITE(SDEIIR, pch_iir); | |
2067 | ret = IRQ_HANDLED; | |
2068 | } | |
2069 | } | |
2070 | ||
abd58f01 BW |
2071 | I915_WRITE(GEN8_MASTER_IRQ, GEN8_MASTER_IRQ_CONTROL); |
2072 | POSTING_READ(GEN8_MASTER_IRQ); | |
2073 | ||
2074 | return ret; | |
2075 | } | |
2076 | ||
17e1df07 DV |
2077 | static void i915_error_wake_up(struct drm_i915_private *dev_priv, |
2078 | bool reset_completed) | |
2079 | { | |
2080 | struct intel_ring_buffer *ring; | |
2081 | int i; | |
2082 | ||
2083 | /* | |
2084 | * Notify all waiters for GPU completion events that reset state has | |
2085 | * been changed, and that they need to restart their wait after | |
2086 | * checking for potential errors (and bail out to drop locks if there is | |
2087 | * a gpu reset pending so that i915_error_work_func can acquire them). | |
2088 | */ | |
2089 | ||
2090 | /* Wake up __wait_seqno, potentially holding dev->struct_mutex. */ | |
2091 | for_each_ring(ring, dev_priv, i) | |
2092 | wake_up_all(&ring->irq_queue); | |
2093 | ||
2094 | /* Wake up intel_crtc_wait_for_pending_flips, holding crtc->mutex. */ | |
2095 | wake_up_all(&dev_priv->pending_flip_queue); | |
2096 | ||
2097 | /* | |
2098 | * Signal tasks blocked in i915_gem_wait_for_error that the pending | |
2099 | * reset state is cleared. | |
2100 | */ | |
2101 | if (reset_completed) | |
2102 | wake_up_all(&dev_priv->gpu_error.reset_queue); | |
2103 | } | |
2104 | ||
8a905236 JB |
2105 | /** |
2106 | * i915_error_work_func - do process context error handling work | |
2107 | * @work: work struct | |
2108 | * | |
2109 | * Fire an error uevent so userspace can see that a hang or error | |
2110 | * was detected. | |
2111 | */ | |
2112 | static void i915_error_work_func(struct work_struct *work) | |
2113 | { | |
1f83fee0 DV |
2114 | struct i915_gpu_error *error = container_of(work, struct i915_gpu_error, |
2115 | work); | |
2116 | drm_i915_private_t *dev_priv = container_of(error, drm_i915_private_t, | |
2117 | gpu_error); | |
8a905236 | 2118 | struct drm_device *dev = dev_priv->dev; |
cce723ed BW |
2119 | char *error_event[] = { I915_ERROR_UEVENT "=1", NULL }; |
2120 | char *reset_event[] = { I915_RESET_UEVENT "=1", NULL }; | |
2121 | char *reset_done_event[] = { I915_ERROR_UEVENT "=0", NULL }; | |
17e1df07 | 2122 | int ret; |
8a905236 | 2123 | |
5bdebb18 | 2124 | kobject_uevent_env(&dev->primary->kdev->kobj, KOBJ_CHANGE, error_event); |
f316a42c | 2125 | |
7db0ba24 DV |
2126 | /* |
2127 | * Note that there's only one work item which does gpu resets, so we | |
2128 | * need not worry about concurrent gpu resets potentially incrementing | |
2129 | * error->reset_counter twice. We only need to take care of another | |
2130 | * racing irq/hangcheck declaring the gpu dead for a second time. A | |
2131 | * quick check for that is good enough: schedule_work ensures the | |
2132 | * correct ordering between hang detection and this work item, and since | |
2133 | * the reset in-progress bit is only ever set by code outside of this | |
2134 | * work we don't need to worry about any other races. | |
2135 | */ | |
2136 | if (i915_reset_in_progress(error) && !i915_terminally_wedged(error)) { | |
f803aa55 | 2137 | DRM_DEBUG_DRIVER("resetting chip\n"); |
5bdebb18 | 2138 | kobject_uevent_env(&dev->primary->kdev->kobj, KOBJ_CHANGE, |
7db0ba24 | 2139 | reset_event); |
1f83fee0 | 2140 | |
17e1df07 DV |
2141 | /* |
2142 | * All state reset _must_ be completed before we update the | |
2143 | * reset counter, for otherwise waiters might miss the reset | |
2144 | * pending state and not properly drop locks, resulting in | |
2145 | * deadlocks with the reset work. | |
2146 | */ | |
f69061be DV |
2147 | ret = i915_reset(dev); |
2148 | ||
17e1df07 DV |
2149 | intel_display_handle_reset(dev); |
2150 | ||
f69061be DV |
2151 | if (ret == 0) { |
2152 | /* | |
2153 | * After all the gem state is reset, increment the reset | |
2154 | * counter and wake up everyone waiting for the reset to | |
2155 | * complete. | |
2156 | * | |
2157 | * Since unlock operations are a one-sided barrier only, | |
2158 | * we need to insert a barrier here to order any seqno | |
2159 | * updates before | |
2160 | * the counter increment. | |
2161 | */ | |
2162 | smp_mb__before_atomic_inc(); | |
2163 | atomic_inc(&dev_priv->gpu_error.reset_counter); | |
2164 | ||
5bdebb18 | 2165 | kobject_uevent_env(&dev->primary->kdev->kobj, |
f69061be | 2166 | KOBJ_CHANGE, reset_done_event); |
1f83fee0 | 2167 | } else { |
2ac0f450 | 2168 | atomic_set_mask(I915_WEDGED, &error->reset_counter); |
f316a42c | 2169 | } |
1f83fee0 | 2170 | |
17e1df07 DV |
2171 | /* |
2172 | * Note: The wake_up also serves as a memory barrier so that | |
2173 | * waiters see the update value of the reset counter atomic_t. | |
2174 | */ | |
2175 | i915_error_wake_up(dev_priv, true); | |
f316a42c | 2176 | } |
8a905236 JB |
2177 | } |
2178 | ||
35aed2e6 | 2179 | static void i915_report_and_clear_eir(struct drm_device *dev) |
8a905236 JB |
2180 | { |
2181 | struct drm_i915_private *dev_priv = dev->dev_private; | |
bd9854f9 | 2182 | uint32_t instdone[I915_NUM_INSTDONE_REG]; |
8a905236 | 2183 | u32 eir = I915_READ(EIR); |
050ee91f | 2184 | int pipe, i; |
8a905236 | 2185 | |
35aed2e6 CW |
2186 | if (!eir) |
2187 | return; | |
8a905236 | 2188 | |
a70491cc | 2189 | pr_err("render error detected, EIR: 0x%08x\n", eir); |
8a905236 | 2190 | |
bd9854f9 BW |
2191 | i915_get_extra_instdone(dev, instdone); |
2192 | ||
8a905236 JB |
2193 | if (IS_G4X(dev)) { |
2194 | if (eir & (GM45_ERROR_MEM_PRIV | GM45_ERROR_CP_PRIV)) { | |
2195 | u32 ipeir = I915_READ(IPEIR_I965); | |
2196 | ||
a70491cc JP |
2197 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR_I965)); |
2198 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR_I965)); | |
050ee91f BW |
2199 | for (i = 0; i < ARRAY_SIZE(instdone); i++) |
2200 | pr_err(" INSTDONE_%d: 0x%08x\n", i, instdone[i]); | |
a70491cc | 2201 | pr_err(" INSTPS: 0x%08x\n", I915_READ(INSTPS)); |
a70491cc | 2202 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD_I965)); |
8a905236 | 2203 | I915_WRITE(IPEIR_I965, ipeir); |
3143a2bf | 2204 | POSTING_READ(IPEIR_I965); |
8a905236 JB |
2205 | } |
2206 | if (eir & GM45_ERROR_PAGE_TABLE) { | |
2207 | u32 pgtbl_err = I915_READ(PGTBL_ER); | |
a70491cc JP |
2208 | pr_err("page table error\n"); |
2209 | pr_err(" PGTBL_ER: 0x%08x\n", pgtbl_err); | |
8a905236 | 2210 | I915_WRITE(PGTBL_ER, pgtbl_err); |
3143a2bf | 2211 | POSTING_READ(PGTBL_ER); |
8a905236 JB |
2212 | } |
2213 | } | |
2214 | ||
a6c45cf0 | 2215 | if (!IS_GEN2(dev)) { |
8a905236 JB |
2216 | if (eir & I915_ERROR_PAGE_TABLE) { |
2217 | u32 pgtbl_err = I915_READ(PGTBL_ER); | |
a70491cc JP |
2218 | pr_err("page table error\n"); |
2219 | pr_err(" PGTBL_ER: 0x%08x\n", pgtbl_err); | |
8a905236 | 2220 | I915_WRITE(PGTBL_ER, pgtbl_err); |
3143a2bf | 2221 | POSTING_READ(PGTBL_ER); |
8a905236 JB |
2222 | } |
2223 | } | |
2224 | ||
2225 | if (eir & I915_ERROR_MEMORY_REFRESH) { | |
a70491cc | 2226 | pr_err("memory refresh error:\n"); |
9db4a9c7 | 2227 | for_each_pipe(pipe) |
a70491cc | 2228 | pr_err("pipe %c stat: 0x%08x\n", |
9db4a9c7 | 2229 | pipe_name(pipe), I915_READ(PIPESTAT(pipe))); |
8a905236 JB |
2230 | /* pipestat has already been acked */ |
2231 | } | |
2232 | if (eir & I915_ERROR_INSTRUCTION) { | |
a70491cc JP |
2233 | pr_err("instruction error\n"); |
2234 | pr_err(" INSTPM: 0x%08x\n", I915_READ(INSTPM)); | |
050ee91f BW |
2235 | for (i = 0; i < ARRAY_SIZE(instdone); i++) |
2236 | pr_err(" INSTDONE_%d: 0x%08x\n", i, instdone[i]); | |
a6c45cf0 | 2237 | if (INTEL_INFO(dev)->gen < 4) { |
8a905236 JB |
2238 | u32 ipeir = I915_READ(IPEIR); |
2239 | ||
a70491cc JP |
2240 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR)); |
2241 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR)); | |
a70491cc | 2242 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD)); |
8a905236 | 2243 | I915_WRITE(IPEIR, ipeir); |
3143a2bf | 2244 | POSTING_READ(IPEIR); |
8a905236 JB |
2245 | } else { |
2246 | u32 ipeir = I915_READ(IPEIR_I965); | |
2247 | ||
a70491cc JP |
2248 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR_I965)); |
2249 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR_I965)); | |
a70491cc | 2250 | pr_err(" INSTPS: 0x%08x\n", I915_READ(INSTPS)); |
a70491cc | 2251 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD_I965)); |
8a905236 | 2252 | I915_WRITE(IPEIR_I965, ipeir); |
3143a2bf | 2253 | POSTING_READ(IPEIR_I965); |
8a905236 JB |
2254 | } |
2255 | } | |
2256 | ||
2257 | I915_WRITE(EIR, eir); | |
3143a2bf | 2258 | POSTING_READ(EIR); |
8a905236 JB |
2259 | eir = I915_READ(EIR); |
2260 | if (eir) { | |
2261 | /* | |
2262 | * some errors might have become stuck, | |
2263 | * mask them. | |
2264 | */ | |
2265 | DRM_ERROR("EIR stuck: 0x%08x, masking\n", eir); | |
2266 | I915_WRITE(EMR, I915_READ(EMR) | eir); | |
2267 | I915_WRITE(IIR, I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
2268 | } | |
35aed2e6 CW |
2269 | } |
2270 | ||
2271 | /** | |
2272 | * i915_handle_error - handle an error interrupt | |
2273 | * @dev: drm device | |
2274 | * | |
2275 | * Do some basic checking of regsiter state at error interrupt time and | |
2276 | * dump it to the syslog. Also call i915_capture_error_state() to make | |
2277 | * sure we get a record and make it available in debugfs. Fire a uevent | |
2278 | * so userspace knows something bad happened (should trigger collection | |
2279 | * of a ring dump etc.). | |
2280 | */ | |
527f9e90 | 2281 | void i915_handle_error(struct drm_device *dev, bool wedged) |
35aed2e6 CW |
2282 | { |
2283 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2284 | ||
2285 | i915_capture_error_state(dev); | |
2286 | i915_report_and_clear_eir(dev); | |
8a905236 | 2287 | |
ba1234d1 | 2288 | if (wedged) { |
f69061be DV |
2289 | atomic_set_mask(I915_RESET_IN_PROGRESS_FLAG, |
2290 | &dev_priv->gpu_error.reset_counter); | |
ba1234d1 | 2291 | |
11ed50ec | 2292 | /* |
17e1df07 DV |
2293 | * Wakeup waiting processes so that the reset work function |
2294 | * i915_error_work_func doesn't deadlock trying to grab various | |
2295 | * locks. By bumping the reset counter first, the woken | |
2296 | * processes will see a reset in progress and back off, | |
2297 | * releasing their locks and then wait for the reset completion. | |
2298 | * We must do this for _all_ gpu waiters that might hold locks | |
2299 | * that the reset work needs to acquire. | |
2300 | * | |
2301 | * Note: The wake_up serves as the required memory barrier to | |
2302 | * ensure that the waiters see the updated value of the reset | |
2303 | * counter atomic_t. | |
11ed50ec | 2304 | */ |
17e1df07 | 2305 | i915_error_wake_up(dev_priv, false); |
11ed50ec BG |
2306 | } |
2307 | ||
122f46ba DV |
2308 | /* |
2309 | * Our reset work can grab modeset locks (since it needs to reset the | |
2310 | * state of outstanding pagelips). Hence it must not be run on our own | |
2311 | * dev-priv->wq work queue for otherwise the flush_work in the pageflip | |
2312 | * code will deadlock. | |
2313 | */ | |
2314 | schedule_work(&dev_priv->gpu_error.work); | |
8a905236 JB |
2315 | } |
2316 | ||
21ad8330 | 2317 | static void __always_unused i915_pageflip_stall_check(struct drm_device *dev, int pipe) |
4e5359cd SF |
2318 | { |
2319 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2320 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
2321 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
05394f39 | 2322 | struct drm_i915_gem_object *obj; |
4e5359cd SF |
2323 | struct intel_unpin_work *work; |
2324 | unsigned long flags; | |
2325 | bool stall_detected; | |
2326 | ||
2327 | /* Ignore early vblank irqs */ | |
2328 | if (intel_crtc == NULL) | |
2329 | return; | |
2330 | ||
2331 | spin_lock_irqsave(&dev->event_lock, flags); | |
2332 | work = intel_crtc->unpin_work; | |
2333 | ||
e7d841ca CW |
2334 | if (work == NULL || |
2335 | atomic_read(&work->pending) >= INTEL_FLIP_COMPLETE || | |
2336 | !work->enable_stall_check) { | |
4e5359cd SF |
2337 | /* Either the pending flip IRQ arrived, or we're too early. Don't check */ |
2338 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
2339 | return; | |
2340 | } | |
2341 | ||
2342 | /* Potential stall - if we see that the flip has happened, assume a missed interrupt */ | |
05394f39 | 2343 | obj = work->pending_flip_obj; |
a6c45cf0 | 2344 | if (INTEL_INFO(dev)->gen >= 4) { |
9db4a9c7 | 2345 | int dspsurf = DSPSURF(intel_crtc->plane); |
446f2545 | 2346 | stall_detected = I915_HI_DISPBASE(I915_READ(dspsurf)) == |
f343c5f6 | 2347 | i915_gem_obj_ggtt_offset(obj); |
4e5359cd | 2348 | } else { |
9db4a9c7 | 2349 | int dspaddr = DSPADDR(intel_crtc->plane); |
f343c5f6 | 2350 | stall_detected = I915_READ(dspaddr) == (i915_gem_obj_ggtt_offset(obj) + |
01f2c773 | 2351 | crtc->y * crtc->fb->pitches[0] + |
4e5359cd SF |
2352 | crtc->x * crtc->fb->bits_per_pixel/8); |
2353 | } | |
2354 | ||
2355 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
2356 | ||
2357 | if (stall_detected) { | |
2358 | DRM_DEBUG_DRIVER("Pageflip stall detected\n"); | |
2359 | intel_prepare_page_flip(dev, intel_crtc->plane); | |
2360 | } | |
2361 | } | |
2362 | ||
42f52ef8 KP |
2363 | /* Called from drm generic code, passed 'crtc' which |
2364 | * we use as a pipe index | |
2365 | */ | |
f71d4af4 | 2366 | static int i915_enable_vblank(struct drm_device *dev, int pipe) |
0a3e67a4 JB |
2367 | { |
2368 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
e9d21d7f | 2369 | unsigned long irqflags; |
71e0ffa5 | 2370 | |
5eddb70b | 2371 | if (!i915_pipe_enabled(dev, pipe)) |
71e0ffa5 | 2372 | return -EINVAL; |
0a3e67a4 | 2373 | |
1ec14ad3 | 2374 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
f796cf8f | 2375 | if (INTEL_INFO(dev)->gen >= 4) |
7c463586 | 2376 | i915_enable_pipestat(dev_priv, pipe, |
755e9019 | 2377 | PIPE_START_VBLANK_INTERRUPT_STATUS); |
e9d21d7f | 2378 | else |
7c463586 | 2379 | i915_enable_pipestat(dev_priv, pipe, |
755e9019 | 2380 | PIPE_VBLANK_INTERRUPT_STATUS); |
8692d00e CW |
2381 | |
2382 | /* maintain vblank delivery even in deep C-states */ | |
3d13ef2e | 2383 | if (INTEL_INFO(dev)->gen == 3) |
6b26c86d | 2384 | I915_WRITE(INSTPM, _MASKED_BIT_DISABLE(INSTPM_AGPBUSY_DIS)); |
1ec14ad3 | 2385 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
8692d00e | 2386 | |
0a3e67a4 JB |
2387 | return 0; |
2388 | } | |
2389 | ||
f71d4af4 | 2390 | static int ironlake_enable_vblank(struct drm_device *dev, int pipe) |
f796cf8f JB |
2391 | { |
2392 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2393 | unsigned long irqflags; | |
b518421f | 2394 | uint32_t bit = (INTEL_INFO(dev)->gen >= 7) ? DE_PIPE_VBLANK_IVB(pipe) : |
40da17c2 | 2395 | DE_PIPE_VBLANK(pipe); |
f796cf8f JB |
2396 | |
2397 | if (!i915_pipe_enabled(dev, pipe)) | |
2398 | return -EINVAL; | |
2399 | ||
2400 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
b518421f | 2401 | ironlake_enable_display_irq(dev_priv, bit); |
b1f14ad0 JB |
2402 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
2403 | ||
2404 | return 0; | |
2405 | } | |
2406 | ||
7e231dbe JB |
2407 | static int valleyview_enable_vblank(struct drm_device *dev, int pipe) |
2408 | { | |
2409 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2410 | unsigned long irqflags; | |
7e231dbe JB |
2411 | |
2412 | if (!i915_pipe_enabled(dev, pipe)) | |
2413 | return -EINVAL; | |
2414 | ||
2415 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
31acc7f5 | 2416 | i915_enable_pipestat(dev_priv, pipe, |
755e9019 | 2417 | PIPE_START_VBLANK_INTERRUPT_STATUS); |
7e231dbe JB |
2418 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
2419 | ||
2420 | return 0; | |
2421 | } | |
2422 | ||
abd58f01 BW |
2423 | static int gen8_enable_vblank(struct drm_device *dev, int pipe) |
2424 | { | |
2425 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2426 | unsigned long irqflags; | |
abd58f01 BW |
2427 | |
2428 | if (!i915_pipe_enabled(dev, pipe)) | |
2429 | return -EINVAL; | |
2430 | ||
2431 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
7167d7c6 DV |
2432 | dev_priv->de_irq_mask[pipe] &= ~GEN8_PIPE_VBLANK; |
2433 | I915_WRITE(GEN8_DE_PIPE_IMR(pipe), dev_priv->de_irq_mask[pipe]); | |
2434 | POSTING_READ(GEN8_DE_PIPE_IMR(pipe)); | |
abd58f01 BW |
2435 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
2436 | return 0; | |
2437 | } | |
2438 | ||
42f52ef8 KP |
2439 | /* Called from drm generic code, passed 'crtc' which |
2440 | * we use as a pipe index | |
2441 | */ | |
f71d4af4 | 2442 | static void i915_disable_vblank(struct drm_device *dev, int pipe) |
0a3e67a4 JB |
2443 | { |
2444 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
e9d21d7f | 2445 | unsigned long irqflags; |
0a3e67a4 | 2446 | |
1ec14ad3 | 2447 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
3d13ef2e | 2448 | if (INTEL_INFO(dev)->gen == 3) |
6b26c86d | 2449 | I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_AGPBUSY_DIS)); |
8692d00e | 2450 | |
f796cf8f | 2451 | i915_disable_pipestat(dev_priv, pipe, |
755e9019 ID |
2452 | PIPE_VBLANK_INTERRUPT_STATUS | |
2453 | PIPE_START_VBLANK_INTERRUPT_STATUS); | |
f796cf8f JB |
2454 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
2455 | } | |
2456 | ||
f71d4af4 | 2457 | static void ironlake_disable_vblank(struct drm_device *dev, int pipe) |
f796cf8f JB |
2458 | { |
2459 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2460 | unsigned long irqflags; | |
b518421f | 2461 | uint32_t bit = (INTEL_INFO(dev)->gen >= 7) ? DE_PIPE_VBLANK_IVB(pipe) : |
40da17c2 | 2462 | DE_PIPE_VBLANK(pipe); |
f796cf8f JB |
2463 | |
2464 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
b518421f | 2465 | ironlake_disable_display_irq(dev_priv, bit); |
b1f14ad0 JB |
2466 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
2467 | } | |
2468 | ||
7e231dbe JB |
2469 | static void valleyview_disable_vblank(struct drm_device *dev, int pipe) |
2470 | { | |
2471 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2472 | unsigned long irqflags; | |
7e231dbe JB |
2473 | |
2474 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
31acc7f5 | 2475 | i915_disable_pipestat(dev_priv, pipe, |
755e9019 | 2476 | PIPE_START_VBLANK_INTERRUPT_STATUS); |
7e231dbe JB |
2477 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
2478 | } | |
2479 | ||
abd58f01 BW |
2480 | static void gen8_disable_vblank(struct drm_device *dev, int pipe) |
2481 | { | |
2482 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2483 | unsigned long irqflags; | |
abd58f01 BW |
2484 | |
2485 | if (!i915_pipe_enabled(dev, pipe)) | |
2486 | return; | |
2487 | ||
2488 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
7167d7c6 DV |
2489 | dev_priv->de_irq_mask[pipe] |= GEN8_PIPE_VBLANK; |
2490 | I915_WRITE(GEN8_DE_PIPE_IMR(pipe), dev_priv->de_irq_mask[pipe]); | |
2491 | POSTING_READ(GEN8_DE_PIPE_IMR(pipe)); | |
abd58f01 BW |
2492 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
2493 | } | |
2494 | ||
893eead0 CW |
2495 | static u32 |
2496 | ring_last_seqno(struct intel_ring_buffer *ring) | |
852835f3 | 2497 | { |
893eead0 CW |
2498 | return list_entry(ring->request_list.prev, |
2499 | struct drm_i915_gem_request, list)->seqno; | |
2500 | } | |
2501 | ||
9107e9d2 CW |
2502 | static bool |
2503 | ring_idle(struct intel_ring_buffer *ring, u32 seqno) | |
2504 | { | |
2505 | return (list_empty(&ring->request_list) || | |
2506 | i915_seqno_passed(seqno, ring_last_seqno(ring))); | |
f65d9421 BG |
2507 | } |
2508 | ||
6274f212 CW |
2509 | static struct intel_ring_buffer * |
2510 | semaphore_waits_for(struct intel_ring_buffer *ring, u32 *seqno) | |
a24a11e6 CW |
2511 | { |
2512 | struct drm_i915_private *dev_priv = ring->dev->dev_private; | |
6274f212 | 2513 | u32 cmd, ipehr, acthd, acthd_min; |
a24a11e6 CW |
2514 | |
2515 | ipehr = I915_READ(RING_IPEHR(ring->mmio_base)); | |
2516 | if ((ipehr & ~(0x3 << 16)) != | |
2517 | (MI_SEMAPHORE_MBOX | MI_SEMAPHORE_COMPARE | MI_SEMAPHORE_REGISTER)) | |
6274f212 | 2518 | return NULL; |
a24a11e6 CW |
2519 | |
2520 | /* ACTHD is likely pointing to the dword after the actual command, | |
2521 | * so scan backwards until we find the MBOX. | |
2522 | */ | |
6274f212 | 2523 | acthd = intel_ring_get_active_head(ring) & HEAD_ADDR; |
a24a11e6 CW |
2524 | acthd_min = max((int)acthd - 3 * 4, 0); |
2525 | do { | |
2526 | cmd = ioread32(ring->virtual_start + acthd); | |
2527 | if (cmd == ipehr) | |
2528 | break; | |
2529 | ||
2530 | acthd -= 4; | |
2531 | if (acthd < acthd_min) | |
6274f212 | 2532 | return NULL; |
a24a11e6 CW |
2533 | } while (1); |
2534 | ||
6274f212 CW |
2535 | *seqno = ioread32(ring->virtual_start+acthd+4)+1; |
2536 | return &dev_priv->ring[(ring->id + (((ipehr >> 17) & 1) + 1)) % 3]; | |
a24a11e6 CW |
2537 | } |
2538 | ||
6274f212 CW |
2539 | static int semaphore_passed(struct intel_ring_buffer *ring) |
2540 | { | |
2541 | struct drm_i915_private *dev_priv = ring->dev->dev_private; | |
2542 | struct intel_ring_buffer *signaller; | |
2543 | u32 seqno, ctl; | |
2544 | ||
2545 | ring->hangcheck.deadlock = true; | |
2546 | ||
2547 | signaller = semaphore_waits_for(ring, &seqno); | |
2548 | if (signaller == NULL || signaller->hangcheck.deadlock) | |
2549 | return -1; | |
2550 | ||
2551 | /* cursory check for an unkickable deadlock */ | |
2552 | ctl = I915_READ_CTL(signaller); | |
2553 | if (ctl & RING_WAIT_SEMAPHORE && semaphore_passed(signaller) < 0) | |
2554 | return -1; | |
2555 | ||
2556 | return i915_seqno_passed(signaller->get_seqno(signaller, false), seqno); | |
2557 | } | |
2558 | ||
2559 | static void semaphore_clear_deadlocks(struct drm_i915_private *dev_priv) | |
2560 | { | |
2561 | struct intel_ring_buffer *ring; | |
2562 | int i; | |
2563 | ||
2564 | for_each_ring(ring, dev_priv, i) | |
2565 | ring->hangcheck.deadlock = false; | |
2566 | } | |
2567 | ||
ad8beaea MK |
2568 | static enum intel_ring_hangcheck_action |
2569 | ring_stuck(struct intel_ring_buffer *ring, u32 acthd) | |
1ec14ad3 CW |
2570 | { |
2571 | struct drm_device *dev = ring->dev; | |
2572 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9107e9d2 CW |
2573 | u32 tmp; |
2574 | ||
6274f212 | 2575 | if (ring->hangcheck.acthd != acthd) |
f2f4d82f | 2576 | return HANGCHECK_ACTIVE; |
6274f212 | 2577 | |
9107e9d2 | 2578 | if (IS_GEN2(dev)) |
f2f4d82f | 2579 | return HANGCHECK_HUNG; |
9107e9d2 CW |
2580 | |
2581 | /* Is the chip hanging on a WAIT_FOR_EVENT? | |
2582 | * If so we can simply poke the RB_WAIT bit | |
2583 | * and break the hang. This should work on | |
2584 | * all but the second generation chipsets. | |
2585 | */ | |
2586 | tmp = I915_READ_CTL(ring); | |
1ec14ad3 CW |
2587 | if (tmp & RING_WAIT) { |
2588 | DRM_ERROR("Kicking stuck wait on %s\n", | |
2589 | ring->name); | |
09e14bf3 | 2590 | i915_handle_error(dev, false); |
1ec14ad3 | 2591 | I915_WRITE_CTL(ring, tmp); |
f2f4d82f | 2592 | return HANGCHECK_KICK; |
6274f212 CW |
2593 | } |
2594 | ||
2595 | if (INTEL_INFO(dev)->gen >= 6 && tmp & RING_WAIT_SEMAPHORE) { | |
2596 | switch (semaphore_passed(ring)) { | |
2597 | default: | |
f2f4d82f | 2598 | return HANGCHECK_HUNG; |
6274f212 CW |
2599 | case 1: |
2600 | DRM_ERROR("Kicking stuck semaphore on %s\n", | |
2601 | ring->name); | |
09e14bf3 | 2602 | i915_handle_error(dev, false); |
6274f212 | 2603 | I915_WRITE_CTL(ring, tmp); |
f2f4d82f | 2604 | return HANGCHECK_KICK; |
6274f212 | 2605 | case 0: |
f2f4d82f | 2606 | return HANGCHECK_WAIT; |
6274f212 | 2607 | } |
9107e9d2 | 2608 | } |
ed5cbb03 | 2609 | |
f2f4d82f | 2610 | return HANGCHECK_HUNG; |
ed5cbb03 MK |
2611 | } |
2612 | ||
f65d9421 BG |
2613 | /** |
2614 | * This is called when the chip hasn't reported back with completed | |
05407ff8 MK |
2615 | * batchbuffers in a long time. We keep track per ring seqno progress and |
2616 | * if there are no progress, hangcheck score for that ring is increased. | |
2617 | * Further, acthd is inspected to see if the ring is stuck. On stuck case | |
2618 | * we kick the ring. If we see no progress on three subsequent calls | |
2619 | * we assume chip is wedged and try to fix it by resetting the chip. | |
f65d9421 | 2620 | */ |
a658b5d2 | 2621 | static void i915_hangcheck_elapsed(unsigned long data) |
f65d9421 BG |
2622 | { |
2623 | struct drm_device *dev = (struct drm_device *)data; | |
2624 | drm_i915_private_t *dev_priv = dev->dev_private; | |
b4519513 | 2625 | struct intel_ring_buffer *ring; |
b4519513 | 2626 | int i; |
05407ff8 | 2627 | int busy_count = 0, rings_hung = 0; |
9107e9d2 CW |
2628 | bool stuck[I915_NUM_RINGS] = { 0 }; |
2629 | #define BUSY 1 | |
2630 | #define KICK 5 | |
2631 | #define HUNG 20 | |
893eead0 | 2632 | |
d330a953 | 2633 | if (!i915.enable_hangcheck) |
3e0dc6b0 BW |
2634 | return; |
2635 | ||
b4519513 | 2636 | for_each_ring(ring, dev_priv, i) { |
05407ff8 | 2637 | u32 seqno, acthd; |
9107e9d2 | 2638 | bool busy = true; |
05407ff8 | 2639 | |
6274f212 CW |
2640 | semaphore_clear_deadlocks(dev_priv); |
2641 | ||
05407ff8 MK |
2642 | seqno = ring->get_seqno(ring, false); |
2643 | acthd = intel_ring_get_active_head(ring); | |
b4519513 | 2644 | |
9107e9d2 CW |
2645 | if (ring->hangcheck.seqno == seqno) { |
2646 | if (ring_idle(ring, seqno)) { | |
da661464 MK |
2647 | ring->hangcheck.action = HANGCHECK_IDLE; |
2648 | ||
9107e9d2 CW |
2649 | if (waitqueue_active(&ring->irq_queue)) { |
2650 | /* Issue a wake-up to catch stuck h/w. */ | |
094f9a54 | 2651 | if (!test_and_set_bit(ring->id, &dev_priv->gpu_error.missed_irq_rings)) { |
f4adcd24 DV |
2652 | if (!(dev_priv->gpu_error.test_irq_rings & intel_ring_flag(ring))) |
2653 | DRM_ERROR("Hangcheck timer elapsed... %s idle\n", | |
2654 | ring->name); | |
2655 | else | |
2656 | DRM_INFO("Fake missed irq on %s\n", | |
2657 | ring->name); | |
094f9a54 CW |
2658 | wake_up_all(&ring->irq_queue); |
2659 | } | |
2660 | /* Safeguard against driver failure */ | |
2661 | ring->hangcheck.score += BUSY; | |
9107e9d2 CW |
2662 | } else |
2663 | busy = false; | |
05407ff8 | 2664 | } else { |
6274f212 CW |
2665 | /* We always increment the hangcheck score |
2666 | * if the ring is busy and still processing | |
2667 | * the same request, so that no single request | |
2668 | * can run indefinitely (such as a chain of | |
2669 | * batches). The only time we do not increment | |
2670 | * the hangcheck score on this ring, if this | |
2671 | * ring is in a legitimate wait for another | |
2672 | * ring. In that case the waiting ring is a | |
2673 | * victim and we want to be sure we catch the | |
2674 | * right culprit. Then every time we do kick | |
2675 | * the ring, add a small increment to the | |
2676 | * score so that we can catch a batch that is | |
2677 | * being repeatedly kicked and so responsible | |
2678 | * for stalling the machine. | |
2679 | */ | |
ad8beaea MK |
2680 | ring->hangcheck.action = ring_stuck(ring, |
2681 | acthd); | |
2682 | ||
2683 | switch (ring->hangcheck.action) { | |
da661464 | 2684 | case HANGCHECK_IDLE: |
f2f4d82f | 2685 | case HANGCHECK_WAIT: |
6274f212 | 2686 | break; |
f2f4d82f | 2687 | case HANGCHECK_ACTIVE: |
ea04cb31 | 2688 | ring->hangcheck.score += BUSY; |
6274f212 | 2689 | break; |
f2f4d82f | 2690 | case HANGCHECK_KICK: |
ea04cb31 | 2691 | ring->hangcheck.score += KICK; |
6274f212 | 2692 | break; |
f2f4d82f | 2693 | case HANGCHECK_HUNG: |
ea04cb31 | 2694 | ring->hangcheck.score += HUNG; |
6274f212 CW |
2695 | stuck[i] = true; |
2696 | break; | |
2697 | } | |
05407ff8 | 2698 | } |
9107e9d2 | 2699 | } else { |
da661464 MK |
2700 | ring->hangcheck.action = HANGCHECK_ACTIVE; |
2701 | ||
9107e9d2 CW |
2702 | /* Gradually reduce the count so that we catch DoS |
2703 | * attempts across multiple batches. | |
2704 | */ | |
2705 | if (ring->hangcheck.score > 0) | |
2706 | ring->hangcheck.score--; | |
d1e61e7f CW |
2707 | } |
2708 | ||
05407ff8 MK |
2709 | ring->hangcheck.seqno = seqno; |
2710 | ring->hangcheck.acthd = acthd; | |
9107e9d2 | 2711 | busy_count += busy; |
893eead0 | 2712 | } |
b9201c14 | 2713 | |
92cab734 | 2714 | for_each_ring(ring, dev_priv, i) { |
b6b0fac0 | 2715 | if (ring->hangcheck.score >= HANGCHECK_SCORE_RING_HUNG) { |
b8d88d1d DV |
2716 | DRM_INFO("%s on %s\n", |
2717 | stuck[i] ? "stuck" : "no progress", | |
2718 | ring->name); | |
a43adf07 | 2719 | rings_hung++; |
92cab734 MK |
2720 | } |
2721 | } | |
2722 | ||
05407ff8 MK |
2723 | if (rings_hung) |
2724 | return i915_handle_error(dev, true); | |
f65d9421 | 2725 | |
05407ff8 MK |
2726 | if (busy_count) |
2727 | /* Reset timer case chip hangs without another request | |
2728 | * being added */ | |
10cd45b6 MK |
2729 | i915_queue_hangcheck(dev); |
2730 | } | |
2731 | ||
2732 | void i915_queue_hangcheck(struct drm_device *dev) | |
2733 | { | |
2734 | struct drm_i915_private *dev_priv = dev->dev_private; | |
d330a953 | 2735 | if (!i915.enable_hangcheck) |
10cd45b6 MK |
2736 | return; |
2737 | ||
2738 | mod_timer(&dev_priv->gpu_error.hangcheck_timer, | |
2739 | round_jiffies_up(jiffies + DRM_I915_HANGCHECK_JIFFIES)); | |
f65d9421 BG |
2740 | } |
2741 | ||
91738a95 PZ |
2742 | static void ibx_irq_preinstall(struct drm_device *dev) |
2743 | { | |
2744 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2745 | ||
2746 | if (HAS_PCH_NOP(dev)) | |
2747 | return; | |
2748 | ||
2749 | /* south display irq */ | |
2750 | I915_WRITE(SDEIMR, 0xffffffff); | |
2751 | /* | |
2752 | * SDEIER is also touched by the interrupt handler to work around missed | |
2753 | * PCH interrupts. Hence we can't update it after the interrupt handler | |
2754 | * is enabled - instead we unconditionally enable all PCH interrupt | |
2755 | * sources here, but then only unmask them as needed with SDEIMR. | |
2756 | */ | |
2757 | I915_WRITE(SDEIER, 0xffffffff); | |
2758 | POSTING_READ(SDEIER); | |
2759 | } | |
2760 | ||
d18ea1b5 DV |
2761 | static void gen5_gt_irq_preinstall(struct drm_device *dev) |
2762 | { | |
2763 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2764 | ||
2765 | /* and GT */ | |
2766 | I915_WRITE(GTIMR, 0xffffffff); | |
2767 | I915_WRITE(GTIER, 0x0); | |
2768 | POSTING_READ(GTIER); | |
2769 | ||
2770 | if (INTEL_INFO(dev)->gen >= 6) { | |
2771 | /* and PM */ | |
2772 | I915_WRITE(GEN6_PMIMR, 0xffffffff); | |
2773 | I915_WRITE(GEN6_PMIER, 0x0); | |
2774 | POSTING_READ(GEN6_PMIER); | |
2775 | } | |
2776 | } | |
2777 | ||
1da177e4 LT |
2778 | /* drm_dma.h hooks |
2779 | */ | |
f71d4af4 | 2780 | static void ironlake_irq_preinstall(struct drm_device *dev) |
036a4a7d ZW |
2781 | { |
2782 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2783 | ||
2784 | I915_WRITE(HWSTAM, 0xeffe); | |
bdfcdb63 | 2785 | |
036a4a7d ZW |
2786 | I915_WRITE(DEIMR, 0xffffffff); |
2787 | I915_WRITE(DEIER, 0x0); | |
3143a2bf | 2788 | POSTING_READ(DEIER); |
036a4a7d | 2789 | |
d18ea1b5 | 2790 | gen5_gt_irq_preinstall(dev); |
c650156a | 2791 | |
91738a95 | 2792 | ibx_irq_preinstall(dev); |
7d99163d BW |
2793 | } |
2794 | ||
7e231dbe JB |
2795 | static void valleyview_irq_preinstall(struct drm_device *dev) |
2796 | { | |
2797 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2798 | int pipe; | |
2799 | ||
7e231dbe JB |
2800 | /* VLV magic */ |
2801 | I915_WRITE(VLV_IMR, 0); | |
2802 | I915_WRITE(RING_IMR(RENDER_RING_BASE), 0); | |
2803 | I915_WRITE(RING_IMR(GEN6_BSD_RING_BASE), 0); | |
2804 | I915_WRITE(RING_IMR(BLT_RING_BASE), 0); | |
2805 | ||
7e231dbe JB |
2806 | /* and GT */ |
2807 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
2808 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
d18ea1b5 DV |
2809 | |
2810 | gen5_gt_irq_preinstall(dev); | |
7e231dbe JB |
2811 | |
2812 | I915_WRITE(DPINVGTT, 0xff); | |
2813 | ||
2814 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
2815 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
2816 | for_each_pipe(pipe) | |
2817 | I915_WRITE(PIPESTAT(pipe), 0xffff); | |
2818 | I915_WRITE(VLV_IIR, 0xffffffff); | |
2819 | I915_WRITE(VLV_IMR, 0xffffffff); | |
2820 | I915_WRITE(VLV_IER, 0x0); | |
2821 | POSTING_READ(VLV_IER); | |
2822 | } | |
2823 | ||
abd58f01 BW |
2824 | static void gen8_irq_preinstall(struct drm_device *dev) |
2825 | { | |
2826 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2827 | int pipe; | |
2828 | ||
abd58f01 BW |
2829 | I915_WRITE(GEN8_MASTER_IRQ, 0); |
2830 | POSTING_READ(GEN8_MASTER_IRQ); | |
2831 | ||
2832 | /* IIR can theoretically queue up two events. Be paranoid */ | |
2833 | #define GEN8_IRQ_INIT_NDX(type, which) do { \ | |
2834 | I915_WRITE(GEN8_##type##_IMR(which), 0xffffffff); \ | |
2835 | POSTING_READ(GEN8_##type##_IMR(which)); \ | |
2836 | I915_WRITE(GEN8_##type##_IER(which), 0); \ | |
2837 | I915_WRITE(GEN8_##type##_IIR(which), 0xffffffff); \ | |
2838 | POSTING_READ(GEN8_##type##_IIR(which)); \ | |
2839 | I915_WRITE(GEN8_##type##_IIR(which), 0xffffffff); \ | |
2840 | } while (0) | |
2841 | ||
2842 | #define GEN8_IRQ_INIT(type) do { \ | |
2843 | I915_WRITE(GEN8_##type##_IMR, 0xffffffff); \ | |
2844 | POSTING_READ(GEN8_##type##_IMR); \ | |
2845 | I915_WRITE(GEN8_##type##_IER, 0); \ | |
2846 | I915_WRITE(GEN8_##type##_IIR, 0xffffffff); \ | |
2847 | POSTING_READ(GEN8_##type##_IIR); \ | |
2848 | I915_WRITE(GEN8_##type##_IIR, 0xffffffff); \ | |
2849 | } while (0) | |
2850 | ||
2851 | GEN8_IRQ_INIT_NDX(GT, 0); | |
2852 | GEN8_IRQ_INIT_NDX(GT, 1); | |
2853 | GEN8_IRQ_INIT_NDX(GT, 2); | |
2854 | GEN8_IRQ_INIT_NDX(GT, 3); | |
2855 | ||
2856 | for_each_pipe(pipe) { | |
2857 | GEN8_IRQ_INIT_NDX(DE_PIPE, pipe); | |
2858 | } | |
2859 | ||
2860 | GEN8_IRQ_INIT(DE_PORT); | |
2861 | GEN8_IRQ_INIT(DE_MISC); | |
2862 | GEN8_IRQ_INIT(PCU); | |
2863 | #undef GEN8_IRQ_INIT | |
2864 | #undef GEN8_IRQ_INIT_NDX | |
2865 | ||
2866 | POSTING_READ(GEN8_PCU_IIR); | |
09f2344d JB |
2867 | |
2868 | ibx_irq_preinstall(dev); | |
abd58f01 BW |
2869 | } |
2870 | ||
82a28bcf | 2871 | static void ibx_hpd_irq_setup(struct drm_device *dev) |
7fe0b973 KP |
2872 | { |
2873 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
82a28bcf DV |
2874 | struct drm_mode_config *mode_config = &dev->mode_config; |
2875 | struct intel_encoder *intel_encoder; | |
fee884ed | 2876 | u32 hotplug_irqs, hotplug, enabled_irqs = 0; |
82a28bcf DV |
2877 | |
2878 | if (HAS_PCH_IBX(dev)) { | |
fee884ed | 2879 | hotplug_irqs = SDE_HOTPLUG_MASK; |
82a28bcf | 2880 | list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head) |
cd569aed | 2881 | if (dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_ENABLED) |
fee884ed | 2882 | enabled_irqs |= hpd_ibx[intel_encoder->hpd_pin]; |
82a28bcf | 2883 | } else { |
fee884ed | 2884 | hotplug_irqs = SDE_HOTPLUG_MASK_CPT; |
82a28bcf | 2885 | list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head) |
cd569aed | 2886 | if (dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_ENABLED) |
fee884ed | 2887 | enabled_irqs |= hpd_cpt[intel_encoder->hpd_pin]; |
82a28bcf | 2888 | } |
7fe0b973 | 2889 | |
fee884ed | 2890 | ibx_display_interrupt_update(dev_priv, hotplug_irqs, enabled_irqs); |
82a28bcf DV |
2891 | |
2892 | /* | |
2893 | * Enable digital hotplug on the PCH, and configure the DP short pulse | |
2894 | * duration to 2ms (which is the minimum in the Display Port spec) | |
2895 | * | |
2896 | * This register is the same on all known PCH chips. | |
2897 | */ | |
7fe0b973 KP |
2898 | hotplug = I915_READ(PCH_PORT_HOTPLUG); |
2899 | hotplug &= ~(PORTD_PULSE_DURATION_MASK|PORTC_PULSE_DURATION_MASK|PORTB_PULSE_DURATION_MASK); | |
2900 | hotplug |= PORTD_HOTPLUG_ENABLE | PORTD_PULSE_DURATION_2ms; | |
2901 | hotplug |= PORTC_HOTPLUG_ENABLE | PORTC_PULSE_DURATION_2ms; | |
2902 | hotplug |= PORTB_HOTPLUG_ENABLE | PORTB_PULSE_DURATION_2ms; | |
2903 | I915_WRITE(PCH_PORT_HOTPLUG, hotplug); | |
2904 | } | |
2905 | ||
d46da437 PZ |
2906 | static void ibx_irq_postinstall(struct drm_device *dev) |
2907 | { | |
2908 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
82a28bcf | 2909 | u32 mask; |
e5868a31 | 2910 | |
692a04cf DV |
2911 | if (HAS_PCH_NOP(dev)) |
2912 | return; | |
2913 | ||
8664281b PZ |
2914 | if (HAS_PCH_IBX(dev)) { |
2915 | mask = SDE_GMBUS | SDE_AUX_MASK | SDE_TRANSB_FIFO_UNDER | | |
de032bf4 | 2916 | SDE_TRANSA_FIFO_UNDER | SDE_POISON; |
8664281b PZ |
2917 | } else { |
2918 | mask = SDE_GMBUS_CPT | SDE_AUX_MASK_CPT | SDE_ERROR_CPT; | |
2919 | ||
2920 | I915_WRITE(SERR_INT, I915_READ(SERR_INT)); | |
2921 | } | |
ab5c608b | 2922 | |
d46da437 PZ |
2923 | I915_WRITE(SDEIIR, I915_READ(SDEIIR)); |
2924 | I915_WRITE(SDEIMR, ~mask); | |
d46da437 PZ |
2925 | } |
2926 | ||
0a9a8c91 DV |
2927 | static void gen5_gt_irq_postinstall(struct drm_device *dev) |
2928 | { | |
2929 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2930 | u32 pm_irqs, gt_irqs; | |
2931 | ||
2932 | pm_irqs = gt_irqs = 0; | |
2933 | ||
2934 | dev_priv->gt_irq_mask = ~0; | |
040d2baa | 2935 | if (HAS_L3_DPF(dev)) { |
0a9a8c91 | 2936 | /* L3 parity interrupt is always unmasked. */ |
35a85ac6 BW |
2937 | dev_priv->gt_irq_mask = ~GT_PARITY_ERROR(dev); |
2938 | gt_irqs |= GT_PARITY_ERROR(dev); | |
0a9a8c91 DV |
2939 | } |
2940 | ||
2941 | gt_irqs |= GT_RENDER_USER_INTERRUPT; | |
2942 | if (IS_GEN5(dev)) { | |
2943 | gt_irqs |= GT_RENDER_PIPECTL_NOTIFY_INTERRUPT | | |
2944 | ILK_BSD_USER_INTERRUPT; | |
2945 | } else { | |
2946 | gt_irqs |= GT_BLT_USER_INTERRUPT | GT_BSD_USER_INTERRUPT; | |
2947 | } | |
2948 | ||
2949 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
2950 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); | |
2951 | I915_WRITE(GTIER, gt_irqs); | |
2952 | POSTING_READ(GTIER); | |
2953 | ||
2954 | if (INTEL_INFO(dev)->gen >= 6) { | |
2955 | pm_irqs |= GEN6_PM_RPS_EVENTS; | |
2956 | ||
2957 | if (HAS_VEBOX(dev)) | |
2958 | pm_irqs |= PM_VEBOX_USER_INTERRUPT; | |
2959 | ||
605cd25b | 2960 | dev_priv->pm_irq_mask = 0xffffffff; |
0a9a8c91 | 2961 | I915_WRITE(GEN6_PMIIR, I915_READ(GEN6_PMIIR)); |
605cd25b | 2962 | I915_WRITE(GEN6_PMIMR, dev_priv->pm_irq_mask); |
0a9a8c91 DV |
2963 | I915_WRITE(GEN6_PMIER, pm_irqs); |
2964 | POSTING_READ(GEN6_PMIER); | |
2965 | } | |
2966 | } | |
2967 | ||
f71d4af4 | 2968 | static int ironlake_irq_postinstall(struct drm_device *dev) |
036a4a7d | 2969 | { |
4bc9d430 | 2970 | unsigned long irqflags; |
036a4a7d | 2971 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
8e76f8dc PZ |
2972 | u32 display_mask, extra_mask; |
2973 | ||
2974 | if (INTEL_INFO(dev)->gen >= 7) { | |
2975 | display_mask = (DE_MASTER_IRQ_CONTROL | DE_GSE_IVB | | |
2976 | DE_PCH_EVENT_IVB | DE_PLANEC_FLIP_DONE_IVB | | |
2977 | DE_PLANEB_FLIP_DONE_IVB | | |
2978 | DE_PLANEA_FLIP_DONE_IVB | DE_AUX_CHANNEL_A_IVB | | |
2979 | DE_ERR_INT_IVB); | |
2980 | extra_mask = (DE_PIPEC_VBLANK_IVB | DE_PIPEB_VBLANK_IVB | | |
2981 | DE_PIPEA_VBLANK_IVB); | |
2982 | ||
2983 | I915_WRITE(GEN7_ERR_INT, I915_READ(GEN7_ERR_INT)); | |
2984 | } else { | |
2985 | display_mask = (DE_MASTER_IRQ_CONTROL | DE_GSE | DE_PCH_EVENT | | |
2986 | DE_PLANEA_FLIP_DONE | DE_PLANEB_FLIP_DONE | | |
5b3a856b DV |
2987 | DE_AUX_CHANNEL_A | |
2988 | DE_PIPEB_FIFO_UNDERRUN | DE_PIPEA_FIFO_UNDERRUN | | |
2989 | DE_PIPEB_CRC_DONE | DE_PIPEA_CRC_DONE | | |
2990 | DE_POISON); | |
8e76f8dc PZ |
2991 | extra_mask = DE_PIPEA_VBLANK | DE_PIPEB_VBLANK | DE_PCU_EVENT; |
2992 | } | |
036a4a7d | 2993 | |
1ec14ad3 | 2994 | dev_priv->irq_mask = ~display_mask; |
036a4a7d ZW |
2995 | |
2996 | /* should always can generate irq */ | |
2997 | I915_WRITE(DEIIR, I915_READ(DEIIR)); | |
1ec14ad3 | 2998 | I915_WRITE(DEIMR, dev_priv->irq_mask); |
8e76f8dc | 2999 | I915_WRITE(DEIER, display_mask | extra_mask); |
3143a2bf | 3000 | POSTING_READ(DEIER); |
036a4a7d | 3001 | |
0a9a8c91 | 3002 | gen5_gt_irq_postinstall(dev); |
036a4a7d | 3003 | |
d46da437 | 3004 | ibx_irq_postinstall(dev); |
7fe0b973 | 3005 | |
f97108d1 | 3006 | if (IS_IRONLAKE_M(dev)) { |
6005ce42 DV |
3007 | /* Enable PCU event interrupts |
3008 | * | |
3009 | * spinlocking not required here for correctness since interrupt | |
4bc9d430 DV |
3010 | * setup is guaranteed to run in single-threaded context. But we |
3011 | * need it to make the assert_spin_locked happy. */ | |
3012 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
f97108d1 | 3013 | ironlake_enable_display_irq(dev_priv, DE_PCU_EVENT); |
4bc9d430 | 3014 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
f97108d1 JB |
3015 | } |
3016 | ||
036a4a7d ZW |
3017 | return 0; |
3018 | } | |
3019 | ||
7e231dbe JB |
3020 | static int valleyview_irq_postinstall(struct drm_device *dev) |
3021 | { | |
3022 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
7e231dbe | 3023 | u32 enable_mask; |
755e9019 ID |
3024 | u32 pipestat_enable = PLANE_FLIP_DONE_INT_STATUS_VLV | |
3025 | PIPE_CRC_DONE_INTERRUPT_STATUS; | |
b79480ba | 3026 | unsigned long irqflags; |
7e231dbe JB |
3027 | |
3028 | enable_mask = I915_DISPLAY_PORT_INTERRUPT; | |
31acc7f5 JB |
3029 | enable_mask |= I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | |
3030 | I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT | | |
3031 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
7e231dbe JB |
3032 | I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; |
3033 | ||
31acc7f5 JB |
3034 | /* |
3035 | *Leave vblank interrupts masked initially. enable/disable will | |
3036 | * toggle them based on usage. | |
3037 | */ | |
3038 | dev_priv->irq_mask = (~enable_mask) | | |
3039 | I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT | | |
3040 | I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; | |
7e231dbe | 3041 | |
20afbda2 DV |
3042 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
3043 | POSTING_READ(PORT_HOTPLUG_EN); | |
3044 | ||
7e231dbe JB |
3045 | I915_WRITE(VLV_IMR, dev_priv->irq_mask); |
3046 | I915_WRITE(VLV_IER, enable_mask); | |
3047 | I915_WRITE(VLV_IIR, 0xffffffff); | |
3048 | I915_WRITE(PIPESTAT(0), 0xffff); | |
3049 | I915_WRITE(PIPESTAT(1), 0xffff); | |
3050 | POSTING_READ(VLV_IER); | |
3051 | ||
b79480ba DV |
3052 | /* Interrupt setup is already guaranteed to be single-threaded, this is |
3053 | * just to make the assert_spin_locked check happy. */ | |
3054 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
3b6c42e8 | 3055 | i915_enable_pipestat(dev_priv, PIPE_A, pipestat_enable); |
755e9019 | 3056 | i915_enable_pipestat(dev_priv, PIPE_A, PIPE_GMBUS_INTERRUPT_STATUS); |
3b6c42e8 | 3057 | i915_enable_pipestat(dev_priv, PIPE_B, pipestat_enable); |
b79480ba | 3058 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
31acc7f5 | 3059 | |
7e231dbe JB |
3060 | I915_WRITE(VLV_IIR, 0xffffffff); |
3061 | I915_WRITE(VLV_IIR, 0xffffffff); | |
3062 | ||
0a9a8c91 | 3063 | gen5_gt_irq_postinstall(dev); |
7e231dbe JB |
3064 | |
3065 | /* ack & enable invalid PTE error interrupts */ | |
3066 | #if 0 /* FIXME: add support to irq handler for checking these bits */ | |
3067 | I915_WRITE(DPINVGTT, DPINVGTT_STATUS_MASK); | |
3068 | I915_WRITE(DPINVGTT, DPINVGTT_EN_MASK); | |
3069 | #endif | |
3070 | ||
3071 | I915_WRITE(VLV_MASTER_IER, MASTER_INTERRUPT_ENABLE); | |
20afbda2 DV |
3072 | |
3073 | return 0; | |
3074 | } | |
3075 | ||
abd58f01 BW |
3076 | static void gen8_gt_irq_postinstall(struct drm_i915_private *dev_priv) |
3077 | { | |
3078 | int i; | |
3079 | ||
3080 | /* These are interrupts we'll toggle with the ring mask register */ | |
3081 | uint32_t gt_interrupts[] = { | |
3082 | GT_RENDER_USER_INTERRUPT << GEN8_RCS_IRQ_SHIFT | | |
3083 | GT_RENDER_L3_PARITY_ERROR_INTERRUPT | | |
3084 | GT_RENDER_USER_INTERRUPT << GEN8_BCS_IRQ_SHIFT, | |
3085 | GT_RENDER_USER_INTERRUPT << GEN8_VCS1_IRQ_SHIFT | | |
3086 | GT_RENDER_USER_INTERRUPT << GEN8_VCS2_IRQ_SHIFT, | |
3087 | 0, | |
3088 | GT_RENDER_USER_INTERRUPT << GEN8_VECS_IRQ_SHIFT | |
3089 | }; | |
3090 | ||
3091 | for (i = 0; i < ARRAY_SIZE(gt_interrupts); i++) { | |
3092 | u32 tmp = I915_READ(GEN8_GT_IIR(i)); | |
3093 | if (tmp) | |
3094 | DRM_ERROR("Interrupt (%d) should have been masked in pre-install 0x%08x\n", | |
3095 | i, tmp); | |
3096 | I915_WRITE(GEN8_GT_IMR(i), ~gt_interrupts[i]); | |
3097 | I915_WRITE(GEN8_GT_IER(i), gt_interrupts[i]); | |
3098 | } | |
3099 | POSTING_READ(GEN8_GT_IER(0)); | |
3100 | } | |
3101 | ||
3102 | static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv) | |
3103 | { | |
3104 | struct drm_device *dev = dev_priv->dev; | |
13b3a0a7 DV |
3105 | uint32_t de_pipe_masked = GEN8_PIPE_FLIP_DONE | |
3106 | GEN8_PIPE_CDCLK_CRC_DONE | | |
3107 | GEN8_PIPE_FIFO_UNDERRUN | | |
3108 | GEN8_DE_PIPE_IRQ_FAULT_ERRORS; | |
3109 | uint32_t de_pipe_enables = de_pipe_masked | GEN8_PIPE_VBLANK; | |
abd58f01 | 3110 | int pipe; |
13b3a0a7 DV |
3111 | dev_priv->de_irq_mask[PIPE_A] = ~de_pipe_masked; |
3112 | dev_priv->de_irq_mask[PIPE_B] = ~de_pipe_masked; | |
3113 | dev_priv->de_irq_mask[PIPE_C] = ~de_pipe_masked; | |
abd58f01 BW |
3114 | |
3115 | for_each_pipe(pipe) { | |
3116 | u32 tmp = I915_READ(GEN8_DE_PIPE_IIR(pipe)); | |
3117 | if (tmp) | |
3118 | DRM_ERROR("Interrupt (%d) should have been masked in pre-install 0x%08x\n", | |
3119 | pipe, tmp); | |
3120 | I915_WRITE(GEN8_DE_PIPE_IMR(pipe), dev_priv->de_irq_mask[pipe]); | |
3121 | I915_WRITE(GEN8_DE_PIPE_IER(pipe), de_pipe_enables); | |
3122 | } | |
3123 | POSTING_READ(GEN8_DE_PIPE_ISR(0)); | |
3124 | ||
6d766f02 DV |
3125 | I915_WRITE(GEN8_DE_PORT_IMR, ~GEN8_AUX_CHANNEL_A); |
3126 | I915_WRITE(GEN8_DE_PORT_IER, GEN8_AUX_CHANNEL_A); | |
abd58f01 BW |
3127 | POSTING_READ(GEN8_DE_PORT_IER); |
3128 | } | |
3129 | ||
3130 | static int gen8_irq_postinstall(struct drm_device *dev) | |
3131 | { | |
3132 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3133 | ||
3134 | gen8_gt_irq_postinstall(dev_priv); | |
3135 | gen8_de_irq_postinstall(dev_priv); | |
3136 | ||
3137 | ibx_irq_postinstall(dev); | |
3138 | ||
3139 | I915_WRITE(GEN8_MASTER_IRQ, DE_MASTER_IRQ_CONTROL); | |
3140 | POSTING_READ(GEN8_MASTER_IRQ); | |
3141 | ||
3142 | return 0; | |
3143 | } | |
3144 | ||
3145 | static void gen8_irq_uninstall(struct drm_device *dev) | |
3146 | { | |
3147 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3148 | int pipe; | |
3149 | ||
3150 | if (!dev_priv) | |
3151 | return; | |
3152 | ||
abd58f01 BW |
3153 | I915_WRITE(GEN8_MASTER_IRQ, 0); |
3154 | ||
3155 | #define GEN8_IRQ_FINI_NDX(type, which) do { \ | |
3156 | I915_WRITE(GEN8_##type##_IMR(which), 0xffffffff); \ | |
3157 | I915_WRITE(GEN8_##type##_IER(which), 0); \ | |
3158 | I915_WRITE(GEN8_##type##_IIR(which), 0xffffffff); \ | |
3159 | } while (0) | |
3160 | ||
3161 | #define GEN8_IRQ_FINI(type) do { \ | |
3162 | I915_WRITE(GEN8_##type##_IMR, 0xffffffff); \ | |
3163 | I915_WRITE(GEN8_##type##_IER, 0); \ | |
3164 | I915_WRITE(GEN8_##type##_IIR, 0xffffffff); \ | |
3165 | } while (0) | |
3166 | ||
3167 | GEN8_IRQ_FINI_NDX(GT, 0); | |
3168 | GEN8_IRQ_FINI_NDX(GT, 1); | |
3169 | GEN8_IRQ_FINI_NDX(GT, 2); | |
3170 | GEN8_IRQ_FINI_NDX(GT, 3); | |
3171 | ||
3172 | for_each_pipe(pipe) { | |
3173 | GEN8_IRQ_FINI_NDX(DE_PIPE, pipe); | |
3174 | } | |
3175 | ||
3176 | GEN8_IRQ_FINI(DE_PORT); | |
3177 | GEN8_IRQ_FINI(DE_MISC); | |
3178 | GEN8_IRQ_FINI(PCU); | |
3179 | #undef GEN8_IRQ_FINI | |
3180 | #undef GEN8_IRQ_FINI_NDX | |
3181 | ||
3182 | POSTING_READ(GEN8_PCU_IIR); | |
3183 | } | |
3184 | ||
7e231dbe JB |
3185 | static void valleyview_irq_uninstall(struct drm_device *dev) |
3186 | { | |
3187 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
3188 | int pipe; | |
3189 | ||
3190 | if (!dev_priv) | |
3191 | return; | |
3192 | ||
3ca1cced | 3193 | intel_hpd_irq_uninstall(dev_priv); |
ac4c16c5 | 3194 | |
7e231dbe JB |
3195 | for_each_pipe(pipe) |
3196 | I915_WRITE(PIPESTAT(pipe), 0xffff); | |
3197 | ||
3198 | I915_WRITE(HWSTAM, 0xffffffff); | |
3199 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
3200 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
3201 | for_each_pipe(pipe) | |
3202 | I915_WRITE(PIPESTAT(pipe), 0xffff); | |
3203 | I915_WRITE(VLV_IIR, 0xffffffff); | |
3204 | I915_WRITE(VLV_IMR, 0xffffffff); | |
3205 | I915_WRITE(VLV_IER, 0x0); | |
3206 | POSTING_READ(VLV_IER); | |
3207 | } | |
3208 | ||
f71d4af4 | 3209 | static void ironlake_irq_uninstall(struct drm_device *dev) |
036a4a7d ZW |
3210 | { |
3211 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
4697995b JB |
3212 | |
3213 | if (!dev_priv) | |
3214 | return; | |
3215 | ||
3ca1cced | 3216 | intel_hpd_irq_uninstall(dev_priv); |
ac4c16c5 | 3217 | |
036a4a7d ZW |
3218 | I915_WRITE(HWSTAM, 0xffffffff); |
3219 | ||
3220 | I915_WRITE(DEIMR, 0xffffffff); | |
3221 | I915_WRITE(DEIER, 0x0); | |
3222 | I915_WRITE(DEIIR, I915_READ(DEIIR)); | |
8664281b PZ |
3223 | if (IS_GEN7(dev)) |
3224 | I915_WRITE(GEN7_ERR_INT, I915_READ(GEN7_ERR_INT)); | |
036a4a7d ZW |
3225 | |
3226 | I915_WRITE(GTIMR, 0xffffffff); | |
3227 | I915_WRITE(GTIER, 0x0); | |
3228 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
192aac1f | 3229 | |
ab5c608b BW |
3230 | if (HAS_PCH_NOP(dev)) |
3231 | return; | |
3232 | ||
192aac1f KP |
3233 | I915_WRITE(SDEIMR, 0xffffffff); |
3234 | I915_WRITE(SDEIER, 0x0); | |
3235 | I915_WRITE(SDEIIR, I915_READ(SDEIIR)); | |
8664281b PZ |
3236 | if (HAS_PCH_CPT(dev) || HAS_PCH_LPT(dev)) |
3237 | I915_WRITE(SERR_INT, I915_READ(SERR_INT)); | |
036a4a7d ZW |
3238 | } |
3239 | ||
a266c7d5 | 3240 | static void i8xx_irq_preinstall(struct drm_device * dev) |
1da177e4 LT |
3241 | { |
3242 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
9db4a9c7 | 3243 | int pipe; |
91e3738e | 3244 | |
9db4a9c7 JB |
3245 | for_each_pipe(pipe) |
3246 | I915_WRITE(PIPESTAT(pipe), 0); | |
a266c7d5 CW |
3247 | I915_WRITE16(IMR, 0xffff); |
3248 | I915_WRITE16(IER, 0x0); | |
3249 | POSTING_READ16(IER); | |
c2798b19 CW |
3250 | } |
3251 | ||
3252 | static int i8xx_irq_postinstall(struct drm_device *dev) | |
3253 | { | |
3254 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
379ef82d | 3255 | unsigned long irqflags; |
c2798b19 | 3256 | |
c2798b19 CW |
3257 | I915_WRITE16(EMR, |
3258 | ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH)); | |
3259 | ||
3260 | /* Unmask the interrupts that we always want on. */ | |
3261 | dev_priv->irq_mask = | |
3262 | ~(I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
3263 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
3264 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
3265 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | | |
3266 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
3267 | I915_WRITE16(IMR, dev_priv->irq_mask); | |
3268 | ||
3269 | I915_WRITE16(IER, | |
3270 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
3271 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
3272 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT | | |
3273 | I915_USER_INTERRUPT); | |
3274 | POSTING_READ16(IER); | |
3275 | ||
379ef82d DV |
3276 | /* Interrupt setup is already guaranteed to be single-threaded, this is |
3277 | * just to make the assert_spin_locked check happy. */ | |
3278 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
755e9019 ID |
3279 | i915_enable_pipestat(dev_priv, PIPE_A, PIPE_CRC_DONE_INTERRUPT_STATUS); |
3280 | i915_enable_pipestat(dev_priv, PIPE_B, PIPE_CRC_DONE_INTERRUPT_STATUS); | |
379ef82d DV |
3281 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
3282 | ||
c2798b19 CW |
3283 | return 0; |
3284 | } | |
3285 | ||
90a72f87 VS |
3286 | /* |
3287 | * Returns true when a page flip has completed. | |
3288 | */ | |
3289 | static bool i8xx_handle_vblank(struct drm_device *dev, | |
1f1c2e24 | 3290 | int plane, int pipe, u32 iir) |
90a72f87 VS |
3291 | { |
3292 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1f1c2e24 | 3293 | u16 flip_pending = DISPLAY_PLANE_FLIP_PENDING(plane); |
90a72f87 VS |
3294 | |
3295 | if (!drm_handle_vblank(dev, pipe)) | |
3296 | return false; | |
3297 | ||
3298 | if ((iir & flip_pending) == 0) | |
3299 | return false; | |
3300 | ||
1f1c2e24 | 3301 | intel_prepare_page_flip(dev, plane); |
90a72f87 VS |
3302 | |
3303 | /* We detect FlipDone by looking for the change in PendingFlip from '1' | |
3304 | * to '0' on the following vblank, i.e. IIR has the Pendingflip | |
3305 | * asserted following the MI_DISPLAY_FLIP, but ISR is deasserted, hence | |
3306 | * the flip is completed (no longer pending). Since this doesn't raise | |
3307 | * an interrupt per se, we watch for the change at vblank. | |
3308 | */ | |
3309 | if (I915_READ16(ISR) & flip_pending) | |
3310 | return false; | |
3311 | ||
3312 | intel_finish_page_flip(dev, pipe); | |
3313 | ||
3314 | return true; | |
3315 | } | |
3316 | ||
ff1f525e | 3317 | static irqreturn_t i8xx_irq_handler(int irq, void *arg) |
c2798b19 CW |
3318 | { |
3319 | struct drm_device *dev = (struct drm_device *) arg; | |
3320 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
c2798b19 CW |
3321 | u16 iir, new_iir; |
3322 | u32 pipe_stats[2]; | |
3323 | unsigned long irqflags; | |
c2798b19 CW |
3324 | int pipe; |
3325 | u16 flip_mask = | |
3326 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
3327 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; | |
3328 | ||
c2798b19 CW |
3329 | iir = I915_READ16(IIR); |
3330 | if (iir == 0) | |
3331 | return IRQ_NONE; | |
3332 | ||
3333 | while (iir & ~flip_mask) { | |
3334 | /* Can't rely on pipestat interrupt bit in iir as it might | |
3335 | * have been cleared after the pipestat interrupt was received. | |
3336 | * It doesn't set the bit in iir again, but it still produces | |
3337 | * interrupts (for non-MSI). | |
3338 | */ | |
3339 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
3340 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) | |
3341 | i915_handle_error(dev, false); | |
3342 | ||
3343 | for_each_pipe(pipe) { | |
3344 | int reg = PIPESTAT(pipe); | |
3345 | pipe_stats[pipe] = I915_READ(reg); | |
3346 | ||
3347 | /* | |
3348 | * Clear the PIPE*STAT regs before the IIR | |
3349 | */ | |
2d9d2b0b | 3350 | if (pipe_stats[pipe] & 0x8000ffff) |
c2798b19 | 3351 | I915_WRITE(reg, pipe_stats[pipe]); |
c2798b19 CW |
3352 | } |
3353 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
3354 | ||
3355 | I915_WRITE16(IIR, iir & ~flip_mask); | |
3356 | new_iir = I915_READ16(IIR); /* Flush posted writes */ | |
3357 | ||
d05c617e | 3358 | i915_update_dri1_breadcrumb(dev); |
c2798b19 CW |
3359 | |
3360 | if (iir & I915_USER_INTERRUPT) | |
3361 | notify_ring(dev, &dev_priv->ring[RCS]); | |
3362 | ||
4356d586 | 3363 | for_each_pipe(pipe) { |
1f1c2e24 | 3364 | int plane = pipe; |
3a77c4c4 | 3365 | if (HAS_FBC(dev)) |
1f1c2e24 VS |
3366 | plane = !plane; |
3367 | ||
4356d586 | 3368 | if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS && |
1f1c2e24 VS |
3369 | i8xx_handle_vblank(dev, plane, pipe, iir)) |
3370 | flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(plane); | |
c2798b19 | 3371 | |
4356d586 | 3372 | if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS) |
277de95e | 3373 | i9xx_pipe_crc_irq_handler(dev, pipe); |
2d9d2b0b VS |
3374 | |
3375 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS && | |
3376 | intel_set_cpu_fifo_underrun_reporting(dev, pipe, false)) | |
fc2c807b | 3377 | DRM_ERROR("pipe %c underrun\n", pipe_name(pipe)); |
4356d586 | 3378 | } |
c2798b19 CW |
3379 | |
3380 | iir = new_iir; | |
3381 | } | |
3382 | ||
3383 | return IRQ_HANDLED; | |
3384 | } | |
3385 | ||
3386 | static void i8xx_irq_uninstall(struct drm_device * dev) | |
3387 | { | |
3388 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
3389 | int pipe; | |
3390 | ||
c2798b19 CW |
3391 | for_each_pipe(pipe) { |
3392 | /* Clear enable bits; then clear status bits */ | |
3393 | I915_WRITE(PIPESTAT(pipe), 0); | |
3394 | I915_WRITE(PIPESTAT(pipe), I915_READ(PIPESTAT(pipe))); | |
3395 | } | |
3396 | I915_WRITE16(IMR, 0xffff); | |
3397 | I915_WRITE16(IER, 0x0); | |
3398 | I915_WRITE16(IIR, I915_READ16(IIR)); | |
3399 | } | |
3400 | ||
a266c7d5 CW |
3401 | static void i915_irq_preinstall(struct drm_device * dev) |
3402 | { | |
3403 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
3404 | int pipe; | |
3405 | ||
a266c7d5 CW |
3406 | if (I915_HAS_HOTPLUG(dev)) { |
3407 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
3408 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
3409 | } | |
3410 | ||
00d98ebd | 3411 | I915_WRITE16(HWSTAM, 0xeffe); |
a266c7d5 CW |
3412 | for_each_pipe(pipe) |
3413 | I915_WRITE(PIPESTAT(pipe), 0); | |
3414 | I915_WRITE(IMR, 0xffffffff); | |
3415 | I915_WRITE(IER, 0x0); | |
3416 | POSTING_READ(IER); | |
3417 | } | |
3418 | ||
3419 | static int i915_irq_postinstall(struct drm_device *dev) | |
3420 | { | |
3421 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
38bde180 | 3422 | u32 enable_mask; |
379ef82d | 3423 | unsigned long irqflags; |
a266c7d5 | 3424 | |
38bde180 CW |
3425 | I915_WRITE(EMR, ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH)); |
3426 | ||
3427 | /* Unmask the interrupts that we always want on. */ | |
3428 | dev_priv->irq_mask = | |
3429 | ~(I915_ASLE_INTERRUPT | | |
3430 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
3431 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
3432 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
3433 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | | |
3434 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
3435 | ||
3436 | enable_mask = | |
3437 | I915_ASLE_INTERRUPT | | |
3438 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
3439 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
3440 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT | | |
3441 | I915_USER_INTERRUPT; | |
3442 | ||
a266c7d5 | 3443 | if (I915_HAS_HOTPLUG(dev)) { |
20afbda2 DV |
3444 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
3445 | POSTING_READ(PORT_HOTPLUG_EN); | |
3446 | ||
a266c7d5 CW |
3447 | /* Enable in IER... */ |
3448 | enable_mask |= I915_DISPLAY_PORT_INTERRUPT; | |
3449 | /* and unmask in IMR */ | |
3450 | dev_priv->irq_mask &= ~I915_DISPLAY_PORT_INTERRUPT; | |
3451 | } | |
3452 | ||
a266c7d5 CW |
3453 | I915_WRITE(IMR, dev_priv->irq_mask); |
3454 | I915_WRITE(IER, enable_mask); | |
3455 | POSTING_READ(IER); | |
3456 | ||
f49e38dd | 3457 | i915_enable_asle_pipestat(dev); |
20afbda2 | 3458 | |
379ef82d DV |
3459 | /* Interrupt setup is already guaranteed to be single-threaded, this is |
3460 | * just to make the assert_spin_locked check happy. */ | |
3461 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
755e9019 ID |
3462 | i915_enable_pipestat(dev_priv, PIPE_A, PIPE_CRC_DONE_INTERRUPT_STATUS); |
3463 | i915_enable_pipestat(dev_priv, PIPE_B, PIPE_CRC_DONE_INTERRUPT_STATUS); | |
379ef82d DV |
3464 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
3465 | ||
20afbda2 DV |
3466 | return 0; |
3467 | } | |
3468 | ||
90a72f87 VS |
3469 | /* |
3470 | * Returns true when a page flip has completed. | |
3471 | */ | |
3472 | static bool i915_handle_vblank(struct drm_device *dev, | |
3473 | int plane, int pipe, u32 iir) | |
3474 | { | |
3475 | drm_i915_private_t *dev_priv = dev->dev_private; | |
3476 | u32 flip_pending = DISPLAY_PLANE_FLIP_PENDING(plane); | |
3477 | ||
3478 | if (!drm_handle_vblank(dev, pipe)) | |
3479 | return false; | |
3480 | ||
3481 | if ((iir & flip_pending) == 0) | |
3482 | return false; | |
3483 | ||
3484 | intel_prepare_page_flip(dev, plane); | |
3485 | ||
3486 | /* We detect FlipDone by looking for the change in PendingFlip from '1' | |
3487 | * to '0' on the following vblank, i.e. IIR has the Pendingflip | |
3488 | * asserted following the MI_DISPLAY_FLIP, but ISR is deasserted, hence | |
3489 | * the flip is completed (no longer pending). Since this doesn't raise | |
3490 | * an interrupt per se, we watch for the change at vblank. | |
3491 | */ | |
3492 | if (I915_READ(ISR) & flip_pending) | |
3493 | return false; | |
3494 | ||
3495 | intel_finish_page_flip(dev, pipe); | |
3496 | ||
3497 | return true; | |
3498 | } | |
3499 | ||
ff1f525e | 3500 | static irqreturn_t i915_irq_handler(int irq, void *arg) |
a266c7d5 CW |
3501 | { |
3502 | struct drm_device *dev = (struct drm_device *) arg; | |
3503 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
8291ee90 | 3504 | u32 iir, new_iir, pipe_stats[I915_MAX_PIPES]; |
a266c7d5 | 3505 | unsigned long irqflags; |
38bde180 CW |
3506 | u32 flip_mask = |
3507 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
3508 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; | |
38bde180 | 3509 | int pipe, ret = IRQ_NONE; |
a266c7d5 | 3510 | |
a266c7d5 | 3511 | iir = I915_READ(IIR); |
38bde180 CW |
3512 | do { |
3513 | bool irq_received = (iir & ~flip_mask) != 0; | |
8291ee90 | 3514 | bool blc_event = false; |
a266c7d5 CW |
3515 | |
3516 | /* Can't rely on pipestat interrupt bit in iir as it might | |
3517 | * have been cleared after the pipestat interrupt was received. | |
3518 | * It doesn't set the bit in iir again, but it still produces | |
3519 | * interrupts (for non-MSI). | |
3520 | */ | |
3521 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
3522 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) | |
3523 | i915_handle_error(dev, false); | |
3524 | ||
3525 | for_each_pipe(pipe) { | |
3526 | int reg = PIPESTAT(pipe); | |
3527 | pipe_stats[pipe] = I915_READ(reg); | |
3528 | ||
38bde180 | 3529 | /* Clear the PIPE*STAT regs before the IIR */ |
a266c7d5 | 3530 | if (pipe_stats[pipe] & 0x8000ffff) { |
a266c7d5 | 3531 | I915_WRITE(reg, pipe_stats[pipe]); |
38bde180 | 3532 | irq_received = true; |
a266c7d5 CW |
3533 | } |
3534 | } | |
3535 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
3536 | ||
3537 | if (!irq_received) | |
3538 | break; | |
3539 | ||
a266c7d5 CW |
3540 | /* Consume port. Then clear IIR or we'll miss events */ |
3541 | if ((I915_HAS_HOTPLUG(dev)) && | |
3542 | (iir & I915_DISPLAY_PORT_INTERRUPT)) { | |
3543 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); | |
b543fb04 | 3544 | u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_I915; |
a266c7d5 | 3545 | |
91d131d2 DV |
3546 | intel_hpd_irq_handler(dev, hotplug_trigger, hpd_status_i915); |
3547 | ||
a266c7d5 | 3548 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); |
38bde180 | 3549 | POSTING_READ(PORT_HOTPLUG_STAT); |
a266c7d5 CW |
3550 | } |
3551 | ||
38bde180 | 3552 | I915_WRITE(IIR, iir & ~flip_mask); |
a266c7d5 CW |
3553 | new_iir = I915_READ(IIR); /* Flush posted writes */ |
3554 | ||
a266c7d5 CW |
3555 | if (iir & I915_USER_INTERRUPT) |
3556 | notify_ring(dev, &dev_priv->ring[RCS]); | |
a266c7d5 | 3557 | |
a266c7d5 | 3558 | for_each_pipe(pipe) { |
38bde180 | 3559 | int plane = pipe; |
3a77c4c4 | 3560 | if (HAS_FBC(dev)) |
38bde180 | 3561 | plane = !plane; |
90a72f87 | 3562 | |
8291ee90 | 3563 | if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS && |
90a72f87 VS |
3564 | i915_handle_vblank(dev, plane, pipe, iir)) |
3565 | flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(plane); | |
a266c7d5 CW |
3566 | |
3567 | if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) | |
3568 | blc_event = true; | |
4356d586 DV |
3569 | |
3570 | if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS) | |
277de95e | 3571 | i9xx_pipe_crc_irq_handler(dev, pipe); |
2d9d2b0b VS |
3572 | |
3573 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS && | |
3574 | intel_set_cpu_fifo_underrun_reporting(dev, pipe, false)) | |
fc2c807b | 3575 | DRM_ERROR("pipe %c underrun\n", pipe_name(pipe)); |
a266c7d5 CW |
3576 | } |
3577 | ||
a266c7d5 CW |
3578 | if (blc_event || (iir & I915_ASLE_INTERRUPT)) |
3579 | intel_opregion_asle_intr(dev); | |
3580 | ||
3581 | /* With MSI, interrupts are only generated when iir | |
3582 | * transitions from zero to nonzero. If another bit got | |
3583 | * set while we were handling the existing iir bits, then | |
3584 | * we would never get another interrupt. | |
3585 | * | |
3586 | * This is fine on non-MSI as well, as if we hit this path | |
3587 | * we avoid exiting the interrupt handler only to generate | |
3588 | * another one. | |
3589 | * | |
3590 | * Note that for MSI this could cause a stray interrupt report | |
3591 | * if an interrupt landed in the time between writing IIR and | |
3592 | * the posting read. This should be rare enough to never | |
3593 | * trigger the 99% of 100,000 interrupts test for disabling | |
3594 | * stray interrupts. | |
3595 | */ | |
38bde180 | 3596 | ret = IRQ_HANDLED; |
a266c7d5 | 3597 | iir = new_iir; |
38bde180 | 3598 | } while (iir & ~flip_mask); |
a266c7d5 | 3599 | |
d05c617e | 3600 | i915_update_dri1_breadcrumb(dev); |
8291ee90 | 3601 | |
a266c7d5 CW |
3602 | return ret; |
3603 | } | |
3604 | ||
3605 | static void i915_irq_uninstall(struct drm_device * dev) | |
3606 | { | |
3607 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
3608 | int pipe; | |
3609 | ||
3ca1cced | 3610 | intel_hpd_irq_uninstall(dev_priv); |
ac4c16c5 | 3611 | |
a266c7d5 CW |
3612 | if (I915_HAS_HOTPLUG(dev)) { |
3613 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
3614 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
3615 | } | |
3616 | ||
00d98ebd | 3617 | I915_WRITE16(HWSTAM, 0xffff); |
55b39755 CW |
3618 | for_each_pipe(pipe) { |
3619 | /* Clear enable bits; then clear status bits */ | |
a266c7d5 | 3620 | I915_WRITE(PIPESTAT(pipe), 0); |
55b39755 CW |
3621 | I915_WRITE(PIPESTAT(pipe), I915_READ(PIPESTAT(pipe))); |
3622 | } | |
a266c7d5 CW |
3623 | I915_WRITE(IMR, 0xffffffff); |
3624 | I915_WRITE(IER, 0x0); | |
3625 | ||
a266c7d5 CW |
3626 | I915_WRITE(IIR, I915_READ(IIR)); |
3627 | } | |
3628 | ||
3629 | static void i965_irq_preinstall(struct drm_device * dev) | |
3630 | { | |
3631 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
3632 | int pipe; | |
3633 | ||
adca4730 CW |
3634 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
3635 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
a266c7d5 CW |
3636 | |
3637 | I915_WRITE(HWSTAM, 0xeffe); | |
3638 | for_each_pipe(pipe) | |
3639 | I915_WRITE(PIPESTAT(pipe), 0); | |
3640 | I915_WRITE(IMR, 0xffffffff); | |
3641 | I915_WRITE(IER, 0x0); | |
3642 | POSTING_READ(IER); | |
3643 | } | |
3644 | ||
3645 | static int i965_irq_postinstall(struct drm_device *dev) | |
3646 | { | |
3647 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
bbba0a97 | 3648 | u32 enable_mask; |
a266c7d5 | 3649 | u32 error_mask; |
b79480ba | 3650 | unsigned long irqflags; |
a266c7d5 | 3651 | |
a266c7d5 | 3652 | /* Unmask the interrupts that we always want on. */ |
bbba0a97 | 3653 | dev_priv->irq_mask = ~(I915_ASLE_INTERRUPT | |
adca4730 | 3654 | I915_DISPLAY_PORT_INTERRUPT | |
bbba0a97 CW |
3655 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | |
3656 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
3657 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
3658 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | | |
3659 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
3660 | ||
3661 | enable_mask = ~dev_priv->irq_mask; | |
21ad8330 VS |
3662 | enable_mask &= ~(I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | |
3663 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT); | |
bbba0a97 CW |
3664 | enable_mask |= I915_USER_INTERRUPT; |
3665 | ||
3666 | if (IS_G4X(dev)) | |
3667 | enable_mask |= I915_BSD_USER_INTERRUPT; | |
a266c7d5 | 3668 | |
b79480ba DV |
3669 | /* Interrupt setup is already guaranteed to be single-threaded, this is |
3670 | * just to make the assert_spin_locked check happy. */ | |
3671 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
755e9019 ID |
3672 | i915_enable_pipestat(dev_priv, PIPE_A, PIPE_GMBUS_INTERRUPT_STATUS); |
3673 | i915_enable_pipestat(dev_priv, PIPE_A, PIPE_CRC_DONE_INTERRUPT_STATUS); | |
3674 | i915_enable_pipestat(dev_priv, PIPE_B, PIPE_CRC_DONE_INTERRUPT_STATUS); | |
b79480ba | 3675 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
a266c7d5 | 3676 | |
a266c7d5 CW |
3677 | /* |
3678 | * Enable some error detection, note the instruction error mask | |
3679 | * bit is reserved, so we leave it masked. | |
3680 | */ | |
3681 | if (IS_G4X(dev)) { | |
3682 | error_mask = ~(GM45_ERROR_PAGE_TABLE | | |
3683 | GM45_ERROR_MEM_PRIV | | |
3684 | GM45_ERROR_CP_PRIV | | |
3685 | I915_ERROR_MEMORY_REFRESH); | |
3686 | } else { | |
3687 | error_mask = ~(I915_ERROR_PAGE_TABLE | | |
3688 | I915_ERROR_MEMORY_REFRESH); | |
3689 | } | |
3690 | I915_WRITE(EMR, error_mask); | |
3691 | ||
3692 | I915_WRITE(IMR, dev_priv->irq_mask); | |
3693 | I915_WRITE(IER, enable_mask); | |
3694 | POSTING_READ(IER); | |
3695 | ||
20afbda2 DV |
3696 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
3697 | POSTING_READ(PORT_HOTPLUG_EN); | |
3698 | ||
f49e38dd | 3699 | i915_enable_asle_pipestat(dev); |
20afbda2 DV |
3700 | |
3701 | return 0; | |
3702 | } | |
3703 | ||
bac56d5b | 3704 | static void i915_hpd_irq_setup(struct drm_device *dev) |
20afbda2 DV |
3705 | { |
3706 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
e5868a31 | 3707 | struct drm_mode_config *mode_config = &dev->mode_config; |
cd569aed | 3708 | struct intel_encoder *intel_encoder; |
20afbda2 DV |
3709 | u32 hotplug_en; |
3710 | ||
b5ea2d56 DV |
3711 | assert_spin_locked(&dev_priv->irq_lock); |
3712 | ||
bac56d5b EE |
3713 | if (I915_HAS_HOTPLUG(dev)) { |
3714 | hotplug_en = I915_READ(PORT_HOTPLUG_EN); | |
3715 | hotplug_en &= ~HOTPLUG_INT_EN_MASK; | |
3716 | /* Note HDMI and DP share hotplug bits */ | |
e5868a31 | 3717 | /* enable bits are the same for all generations */ |
cd569aed EE |
3718 | list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head) |
3719 | if (dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_ENABLED) | |
3720 | hotplug_en |= hpd_mask_i915[intel_encoder->hpd_pin]; | |
bac56d5b EE |
3721 | /* Programming the CRT detection parameters tends |
3722 | to generate a spurious hotplug event about three | |
3723 | seconds later. So just do it once. | |
3724 | */ | |
3725 | if (IS_G4X(dev)) | |
3726 | hotplug_en |= CRT_HOTPLUG_ACTIVATION_PERIOD_64; | |
85fc95ba | 3727 | hotplug_en &= ~CRT_HOTPLUG_VOLTAGE_COMPARE_MASK; |
bac56d5b | 3728 | hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50; |
a266c7d5 | 3729 | |
bac56d5b EE |
3730 | /* Ignore TV since it's buggy */ |
3731 | I915_WRITE(PORT_HOTPLUG_EN, hotplug_en); | |
3732 | } | |
a266c7d5 CW |
3733 | } |
3734 | ||
ff1f525e | 3735 | static irqreturn_t i965_irq_handler(int irq, void *arg) |
a266c7d5 CW |
3736 | { |
3737 | struct drm_device *dev = (struct drm_device *) arg; | |
3738 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
a266c7d5 CW |
3739 | u32 iir, new_iir; |
3740 | u32 pipe_stats[I915_MAX_PIPES]; | |
a266c7d5 | 3741 | unsigned long irqflags; |
a266c7d5 | 3742 | int ret = IRQ_NONE, pipe; |
21ad8330 VS |
3743 | u32 flip_mask = |
3744 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
3745 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; | |
a266c7d5 | 3746 | |
a266c7d5 CW |
3747 | iir = I915_READ(IIR); |
3748 | ||
a266c7d5 | 3749 | for (;;) { |
501e01d7 | 3750 | bool irq_received = (iir & ~flip_mask) != 0; |
2c8ba29f CW |
3751 | bool blc_event = false; |
3752 | ||
a266c7d5 CW |
3753 | /* Can't rely on pipestat interrupt bit in iir as it might |
3754 | * have been cleared after the pipestat interrupt was received. | |
3755 | * It doesn't set the bit in iir again, but it still produces | |
3756 | * interrupts (for non-MSI). | |
3757 | */ | |
3758 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
3759 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) | |
3760 | i915_handle_error(dev, false); | |
3761 | ||
3762 | for_each_pipe(pipe) { | |
3763 | int reg = PIPESTAT(pipe); | |
3764 | pipe_stats[pipe] = I915_READ(reg); | |
3765 | ||
3766 | /* | |
3767 | * Clear the PIPE*STAT regs before the IIR | |
3768 | */ | |
3769 | if (pipe_stats[pipe] & 0x8000ffff) { | |
a266c7d5 | 3770 | I915_WRITE(reg, pipe_stats[pipe]); |
501e01d7 | 3771 | irq_received = true; |
a266c7d5 CW |
3772 | } |
3773 | } | |
3774 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
3775 | ||
3776 | if (!irq_received) | |
3777 | break; | |
3778 | ||
3779 | ret = IRQ_HANDLED; | |
3780 | ||
3781 | /* Consume port. Then clear IIR or we'll miss events */ | |
adca4730 | 3782 | if (iir & I915_DISPLAY_PORT_INTERRUPT) { |
a266c7d5 | 3783 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); |
b543fb04 EE |
3784 | u32 hotplug_trigger = hotplug_status & (IS_G4X(dev) ? |
3785 | HOTPLUG_INT_STATUS_G4X : | |
4f7fd709 | 3786 | HOTPLUG_INT_STATUS_I915); |
a266c7d5 | 3787 | |
91d131d2 | 3788 | intel_hpd_irq_handler(dev, hotplug_trigger, |
704cfb87 | 3789 | IS_G4X(dev) ? hpd_status_g4x : hpd_status_i915); |
91d131d2 | 3790 | |
4aeebd74 DV |
3791 | if (IS_G4X(dev) && |
3792 | (hotplug_status & DP_AUX_CHANNEL_MASK_INT_STATUS_G4X)) | |
3793 | dp_aux_irq_handler(dev); | |
3794 | ||
a266c7d5 CW |
3795 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); |
3796 | I915_READ(PORT_HOTPLUG_STAT); | |
3797 | } | |
3798 | ||
21ad8330 | 3799 | I915_WRITE(IIR, iir & ~flip_mask); |
a266c7d5 CW |
3800 | new_iir = I915_READ(IIR); /* Flush posted writes */ |
3801 | ||
a266c7d5 CW |
3802 | if (iir & I915_USER_INTERRUPT) |
3803 | notify_ring(dev, &dev_priv->ring[RCS]); | |
3804 | if (iir & I915_BSD_USER_INTERRUPT) | |
3805 | notify_ring(dev, &dev_priv->ring[VCS]); | |
3806 | ||
a266c7d5 | 3807 | for_each_pipe(pipe) { |
2c8ba29f | 3808 | if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS && |
90a72f87 VS |
3809 | i915_handle_vblank(dev, pipe, pipe, iir)) |
3810 | flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(pipe); | |
a266c7d5 CW |
3811 | |
3812 | if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) | |
3813 | blc_event = true; | |
4356d586 DV |
3814 | |
3815 | if (pipe_stats[pipe] & PIPE_CRC_DONE_INTERRUPT_STATUS) | |
277de95e | 3816 | i9xx_pipe_crc_irq_handler(dev, pipe); |
a266c7d5 | 3817 | |
2d9d2b0b VS |
3818 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS && |
3819 | intel_set_cpu_fifo_underrun_reporting(dev, pipe, false)) | |
fc2c807b | 3820 | DRM_ERROR("pipe %c underrun\n", pipe_name(pipe)); |
2d9d2b0b | 3821 | } |
a266c7d5 CW |
3822 | |
3823 | if (blc_event || (iir & I915_ASLE_INTERRUPT)) | |
3824 | intel_opregion_asle_intr(dev); | |
3825 | ||
515ac2bb DV |
3826 | if (pipe_stats[0] & PIPE_GMBUS_INTERRUPT_STATUS) |
3827 | gmbus_irq_handler(dev); | |
3828 | ||
a266c7d5 CW |
3829 | /* With MSI, interrupts are only generated when iir |
3830 | * transitions from zero to nonzero. If another bit got | |
3831 | * set while we were handling the existing iir bits, then | |
3832 | * we would never get another interrupt. | |
3833 | * | |
3834 | * This is fine on non-MSI as well, as if we hit this path | |
3835 | * we avoid exiting the interrupt handler only to generate | |
3836 | * another one. | |
3837 | * | |
3838 | * Note that for MSI this could cause a stray interrupt report | |
3839 | * if an interrupt landed in the time between writing IIR and | |
3840 | * the posting read. This should be rare enough to never | |
3841 | * trigger the 99% of 100,000 interrupts test for disabling | |
3842 | * stray interrupts. | |
3843 | */ | |
3844 | iir = new_iir; | |
3845 | } | |
3846 | ||
d05c617e | 3847 | i915_update_dri1_breadcrumb(dev); |
2c8ba29f | 3848 | |
a266c7d5 CW |
3849 | return ret; |
3850 | } | |
3851 | ||
3852 | static void i965_irq_uninstall(struct drm_device * dev) | |
3853 | { | |
3854 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
3855 | int pipe; | |
3856 | ||
3857 | if (!dev_priv) | |
3858 | return; | |
3859 | ||
3ca1cced | 3860 | intel_hpd_irq_uninstall(dev_priv); |
ac4c16c5 | 3861 | |
adca4730 CW |
3862 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
3863 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
a266c7d5 CW |
3864 | |
3865 | I915_WRITE(HWSTAM, 0xffffffff); | |
3866 | for_each_pipe(pipe) | |
3867 | I915_WRITE(PIPESTAT(pipe), 0); | |
3868 | I915_WRITE(IMR, 0xffffffff); | |
3869 | I915_WRITE(IER, 0x0); | |
3870 | ||
3871 | for_each_pipe(pipe) | |
3872 | I915_WRITE(PIPESTAT(pipe), | |
3873 | I915_READ(PIPESTAT(pipe)) & 0x8000ffff); | |
3874 | I915_WRITE(IIR, I915_READ(IIR)); | |
3875 | } | |
3876 | ||
3ca1cced | 3877 | static void intel_hpd_irq_reenable(unsigned long data) |
ac4c16c5 EE |
3878 | { |
3879 | drm_i915_private_t *dev_priv = (drm_i915_private_t *)data; | |
3880 | struct drm_device *dev = dev_priv->dev; | |
3881 | struct drm_mode_config *mode_config = &dev->mode_config; | |
3882 | unsigned long irqflags; | |
3883 | int i; | |
3884 | ||
3885 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
3886 | for (i = (HPD_NONE + 1); i < HPD_NUM_PINS; i++) { | |
3887 | struct drm_connector *connector; | |
3888 | ||
3889 | if (dev_priv->hpd_stats[i].hpd_mark != HPD_DISABLED) | |
3890 | continue; | |
3891 | ||
3892 | dev_priv->hpd_stats[i].hpd_mark = HPD_ENABLED; | |
3893 | ||
3894 | list_for_each_entry(connector, &mode_config->connector_list, head) { | |
3895 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
3896 | ||
3897 | if (intel_connector->encoder->hpd_pin == i) { | |
3898 | if (connector->polled != intel_connector->polled) | |
3899 | DRM_DEBUG_DRIVER("Reenabling HPD on connector %s\n", | |
3900 | drm_get_connector_name(connector)); | |
3901 | connector->polled = intel_connector->polled; | |
3902 | if (!connector->polled) | |
3903 | connector->polled = DRM_CONNECTOR_POLL_HPD; | |
3904 | } | |
3905 | } | |
3906 | } | |
3907 | if (dev_priv->display.hpd_irq_setup) | |
3908 | dev_priv->display.hpd_irq_setup(dev); | |
3909 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
3910 | } | |
3911 | ||
f71d4af4 JB |
3912 | void intel_irq_init(struct drm_device *dev) |
3913 | { | |
8b2e326d CW |
3914 | struct drm_i915_private *dev_priv = dev->dev_private; |
3915 | ||
3916 | INIT_WORK(&dev_priv->hotplug_work, i915_hotplug_work_func); | |
99584db3 | 3917 | INIT_WORK(&dev_priv->gpu_error.work, i915_error_work_func); |
c6a828d3 | 3918 | INIT_WORK(&dev_priv->rps.work, gen6_pm_rps_work); |
a4da4fa4 | 3919 | INIT_WORK(&dev_priv->l3_parity.error_work, ivybridge_parity_work); |
8b2e326d | 3920 | |
99584db3 DV |
3921 | setup_timer(&dev_priv->gpu_error.hangcheck_timer, |
3922 | i915_hangcheck_elapsed, | |
61bac78e | 3923 | (unsigned long) dev); |
3ca1cced | 3924 | setup_timer(&dev_priv->hotplug_reenable_timer, intel_hpd_irq_reenable, |
ac4c16c5 | 3925 | (unsigned long) dev_priv); |
61bac78e | 3926 | |
97a19a24 | 3927 | pm_qos_add_request(&dev_priv->pm_qos, PM_QOS_CPU_DMA_LATENCY, PM_QOS_DEFAULT_VALUE); |
9ee32fea | 3928 | |
4cdb83ec VS |
3929 | if (IS_GEN2(dev)) { |
3930 | dev->max_vblank_count = 0; | |
3931 | dev->driver->get_vblank_counter = i8xx_get_vblank_counter; | |
3932 | } else if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) { | |
f71d4af4 JB |
3933 | dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */ |
3934 | dev->driver->get_vblank_counter = gm45_get_vblank_counter; | |
391f75e2 VS |
3935 | } else { |
3936 | dev->driver->get_vblank_counter = i915_get_vblank_counter; | |
3937 | dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */ | |
f71d4af4 JB |
3938 | } |
3939 | ||
c2baf4b7 | 3940 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { |
c3613de9 | 3941 | dev->driver->get_vblank_timestamp = i915_get_vblank_timestamp; |
c2baf4b7 VS |
3942 | dev->driver->get_scanout_position = i915_get_crtc_scanoutpos; |
3943 | } | |
f71d4af4 | 3944 | |
7e231dbe JB |
3945 | if (IS_VALLEYVIEW(dev)) { |
3946 | dev->driver->irq_handler = valleyview_irq_handler; | |
3947 | dev->driver->irq_preinstall = valleyview_irq_preinstall; | |
3948 | dev->driver->irq_postinstall = valleyview_irq_postinstall; | |
3949 | dev->driver->irq_uninstall = valleyview_irq_uninstall; | |
3950 | dev->driver->enable_vblank = valleyview_enable_vblank; | |
3951 | dev->driver->disable_vblank = valleyview_disable_vblank; | |
fa00abe0 | 3952 | dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup; |
abd58f01 BW |
3953 | } else if (IS_GEN8(dev)) { |
3954 | dev->driver->irq_handler = gen8_irq_handler; | |
3955 | dev->driver->irq_preinstall = gen8_irq_preinstall; | |
3956 | dev->driver->irq_postinstall = gen8_irq_postinstall; | |
3957 | dev->driver->irq_uninstall = gen8_irq_uninstall; | |
3958 | dev->driver->enable_vblank = gen8_enable_vblank; | |
3959 | dev->driver->disable_vblank = gen8_disable_vblank; | |
3960 | dev_priv->display.hpd_irq_setup = ibx_hpd_irq_setup; | |
f71d4af4 JB |
3961 | } else if (HAS_PCH_SPLIT(dev)) { |
3962 | dev->driver->irq_handler = ironlake_irq_handler; | |
3963 | dev->driver->irq_preinstall = ironlake_irq_preinstall; | |
3964 | dev->driver->irq_postinstall = ironlake_irq_postinstall; | |
3965 | dev->driver->irq_uninstall = ironlake_irq_uninstall; | |
3966 | dev->driver->enable_vblank = ironlake_enable_vblank; | |
3967 | dev->driver->disable_vblank = ironlake_disable_vblank; | |
82a28bcf | 3968 | dev_priv->display.hpd_irq_setup = ibx_hpd_irq_setup; |
f71d4af4 | 3969 | } else { |
c2798b19 CW |
3970 | if (INTEL_INFO(dev)->gen == 2) { |
3971 | dev->driver->irq_preinstall = i8xx_irq_preinstall; | |
3972 | dev->driver->irq_postinstall = i8xx_irq_postinstall; | |
3973 | dev->driver->irq_handler = i8xx_irq_handler; | |
3974 | dev->driver->irq_uninstall = i8xx_irq_uninstall; | |
a266c7d5 CW |
3975 | } else if (INTEL_INFO(dev)->gen == 3) { |
3976 | dev->driver->irq_preinstall = i915_irq_preinstall; | |
3977 | dev->driver->irq_postinstall = i915_irq_postinstall; | |
3978 | dev->driver->irq_uninstall = i915_irq_uninstall; | |
3979 | dev->driver->irq_handler = i915_irq_handler; | |
20afbda2 | 3980 | dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup; |
c2798b19 | 3981 | } else { |
a266c7d5 CW |
3982 | dev->driver->irq_preinstall = i965_irq_preinstall; |
3983 | dev->driver->irq_postinstall = i965_irq_postinstall; | |
3984 | dev->driver->irq_uninstall = i965_irq_uninstall; | |
3985 | dev->driver->irq_handler = i965_irq_handler; | |
bac56d5b | 3986 | dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup; |
c2798b19 | 3987 | } |
f71d4af4 JB |
3988 | dev->driver->enable_vblank = i915_enable_vblank; |
3989 | dev->driver->disable_vblank = i915_disable_vblank; | |
3990 | } | |
3991 | } | |
20afbda2 DV |
3992 | |
3993 | void intel_hpd_init(struct drm_device *dev) | |
3994 | { | |
3995 | struct drm_i915_private *dev_priv = dev->dev_private; | |
821450c6 EE |
3996 | struct drm_mode_config *mode_config = &dev->mode_config; |
3997 | struct drm_connector *connector; | |
b5ea2d56 | 3998 | unsigned long irqflags; |
821450c6 | 3999 | int i; |
20afbda2 | 4000 | |
821450c6 EE |
4001 | for (i = 1; i < HPD_NUM_PINS; i++) { |
4002 | dev_priv->hpd_stats[i].hpd_cnt = 0; | |
4003 | dev_priv->hpd_stats[i].hpd_mark = HPD_ENABLED; | |
4004 | } | |
4005 | list_for_each_entry(connector, &mode_config->connector_list, head) { | |
4006 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
4007 | connector->polled = intel_connector->polled; | |
4008 | if (!connector->polled && I915_HAS_HOTPLUG(dev) && intel_connector->encoder->hpd_pin > HPD_NONE) | |
4009 | connector->polled = DRM_CONNECTOR_POLL_HPD; | |
4010 | } | |
b5ea2d56 DV |
4011 | |
4012 | /* Interrupt setup is already guaranteed to be single-threaded, this is | |
4013 | * just to make the assert_spin_locked checks happy. */ | |
4014 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
20afbda2 DV |
4015 | if (dev_priv->display.hpd_irq_setup) |
4016 | dev_priv->display.hpd_irq_setup(dev); | |
b5ea2d56 | 4017 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
20afbda2 | 4018 | } |
c67a470b PZ |
4019 | |
4020 | /* Disable interrupts so we can allow Package C8+. */ | |
4021 | void hsw_pc8_disable_interrupts(struct drm_device *dev) | |
4022 | { | |
4023 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4024 | unsigned long irqflags; | |
4025 | ||
4026 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
4027 | ||
4028 | dev_priv->pc8.regsave.deimr = I915_READ(DEIMR); | |
4029 | dev_priv->pc8.regsave.sdeimr = I915_READ(SDEIMR); | |
4030 | dev_priv->pc8.regsave.gtimr = I915_READ(GTIMR); | |
4031 | dev_priv->pc8.regsave.gtier = I915_READ(GTIER); | |
4032 | dev_priv->pc8.regsave.gen6_pmimr = I915_READ(GEN6_PMIMR); | |
4033 | ||
1f2d4531 PZ |
4034 | ironlake_disable_display_irq(dev_priv, 0xffffffff); |
4035 | ibx_disable_display_interrupt(dev_priv, 0xffffffff); | |
c67a470b PZ |
4036 | ilk_disable_gt_irq(dev_priv, 0xffffffff); |
4037 | snb_disable_pm_irq(dev_priv, 0xffffffff); | |
4038 | ||
4039 | dev_priv->pc8.irqs_disabled = true; | |
4040 | ||
4041 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
4042 | } | |
4043 | ||
4044 | /* Restore interrupts so we can recover from Package C8+. */ | |
4045 | void hsw_pc8_restore_interrupts(struct drm_device *dev) | |
4046 | { | |
4047 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4048 | unsigned long irqflags; | |
1f2d4531 | 4049 | uint32_t val; |
c67a470b PZ |
4050 | |
4051 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
4052 | ||
4053 | val = I915_READ(DEIMR); | |
1f2d4531 | 4054 | WARN(val != 0xffffffff, "DEIMR is 0x%08x\n", val); |
c67a470b | 4055 | |
1f2d4531 PZ |
4056 | val = I915_READ(SDEIMR); |
4057 | WARN(val != 0xffffffff, "SDEIMR is 0x%08x\n", val); | |
c67a470b PZ |
4058 | |
4059 | val = I915_READ(GTIMR); | |
1f2d4531 | 4060 | WARN(val != 0xffffffff, "GTIMR is 0x%08x\n", val); |
c67a470b PZ |
4061 | |
4062 | val = I915_READ(GEN6_PMIMR); | |
1f2d4531 | 4063 | WARN(val != 0xffffffff, "GEN6_PMIMR is 0x%08x\n", val); |
c67a470b PZ |
4064 | |
4065 | dev_priv->pc8.irqs_disabled = false; | |
4066 | ||
4067 | ironlake_enable_display_irq(dev_priv, ~dev_priv->pc8.regsave.deimr); | |
1f2d4531 | 4068 | ibx_enable_display_interrupt(dev_priv, ~dev_priv->pc8.regsave.sdeimr); |
c67a470b PZ |
4069 | ilk_enable_gt_irq(dev_priv, ~dev_priv->pc8.regsave.gtimr); |
4070 | snb_enable_pm_irq(dev_priv, ~dev_priv->pc8.regsave.gen6_pmimr); | |
4071 | I915_WRITE(GTIER, dev_priv->pc8.regsave.gtier); | |
4072 | ||
4073 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
4074 | } |