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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> |
760285e7 DH |
33 | #include <drm/drmP.h> |
34 | #include <drm/i915_drm.h> | |
1da177e4 | 35 | #include "i915_drv.h" |
1c5d22f7 | 36 | #include "i915_trace.h" |
79e53945 | 37 | #include "intel_drv.h" |
1da177e4 | 38 | |
e5868a31 EE |
39 | static const u32 hpd_ibx[] = { |
40 | [HPD_CRT] = SDE_CRT_HOTPLUG, | |
41 | [HPD_SDVO_B] = SDE_SDVOB_HOTPLUG, | |
42 | [HPD_PORT_B] = SDE_PORTB_HOTPLUG, | |
43 | [HPD_PORT_C] = SDE_PORTC_HOTPLUG, | |
44 | [HPD_PORT_D] = SDE_PORTD_HOTPLUG | |
45 | }; | |
46 | ||
47 | static const u32 hpd_cpt[] = { | |
48 | [HPD_CRT] = SDE_CRT_HOTPLUG_CPT, | |
73c352a2 | 49 | [HPD_SDVO_B] = SDE_SDVOB_HOTPLUG_CPT, |
e5868a31 EE |
50 | [HPD_PORT_B] = SDE_PORTB_HOTPLUG_CPT, |
51 | [HPD_PORT_C] = SDE_PORTC_HOTPLUG_CPT, | |
52 | [HPD_PORT_D] = SDE_PORTD_HOTPLUG_CPT | |
53 | }; | |
54 | ||
55 | static const u32 hpd_mask_i915[] = { | |
56 | [HPD_CRT] = CRT_HOTPLUG_INT_EN, | |
57 | [HPD_SDVO_B] = SDVOB_HOTPLUG_INT_EN, | |
58 | [HPD_SDVO_C] = SDVOC_HOTPLUG_INT_EN, | |
59 | [HPD_PORT_B] = PORTB_HOTPLUG_INT_EN, | |
60 | [HPD_PORT_C] = PORTC_HOTPLUG_INT_EN, | |
61 | [HPD_PORT_D] = PORTD_HOTPLUG_INT_EN | |
62 | }; | |
63 | ||
64 | static const u32 hpd_status_gen4[] = { | |
65 | [HPD_CRT] = CRT_HOTPLUG_INT_STATUS, | |
66 | [HPD_SDVO_B] = SDVOB_HOTPLUG_INT_STATUS_G4X, | |
67 | [HPD_SDVO_C] = SDVOC_HOTPLUG_INT_STATUS_G4X, | |
68 | [HPD_PORT_B] = PORTB_HOTPLUG_INT_STATUS, | |
69 | [HPD_PORT_C] = PORTC_HOTPLUG_INT_STATUS, | |
70 | [HPD_PORT_D] = PORTD_HOTPLUG_INT_STATUS | |
71 | }; | |
72 | ||
e5868a31 EE |
73 | static const u32 hpd_status_i915[] = { /* i915 and valleyview are the same */ |
74 | [HPD_CRT] = CRT_HOTPLUG_INT_STATUS, | |
75 | [HPD_SDVO_B] = SDVOB_HOTPLUG_INT_STATUS_I915, | |
76 | [HPD_SDVO_C] = SDVOC_HOTPLUG_INT_STATUS_I915, | |
77 | [HPD_PORT_B] = PORTB_HOTPLUG_INT_STATUS, | |
78 | [HPD_PORT_C] = PORTC_HOTPLUG_INT_STATUS, | |
79 | [HPD_PORT_D] = PORTD_HOTPLUG_INT_STATUS | |
80 | }; | |
81 | ||
036a4a7d | 82 | /* For display hotplug interrupt */ |
995b6762 | 83 | static void |
f2b115e6 | 84 | ironlake_enable_display_irq(drm_i915_private_t *dev_priv, u32 mask) |
036a4a7d | 85 | { |
4bc9d430 DV |
86 | assert_spin_locked(&dev_priv->irq_lock); |
87 | ||
1ec14ad3 CW |
88 | if ((dev_priv->irq_mask & mask) != 0) { |
89 | dev_priv->irq_mask &= ~mask; | |
90 | I915_WRITE(DEIMR, dev_priv->irq_mask); | |
3143a2bf | 91 | POSTING_READ(DEIMR); |
036a4a7d ZW |
92 | } |
93 | } | |
94 | ||
0ff9800a | 95 | static void |
f2b115e6 | 96 | ironlake_disable_display_irq(drm_i915_private_t *dev_priv, u32 mask) |
036a4a7d | 97 | { |
4bc9d430 DV |
98 | assert_spin_locked(&dev_priv->irq_lock); |
99 | ||
1ec14ad3 CW |
100 | if ((dev_priv->irq_mask & mask) != mask) { |
101 | dev_priv->irq_mask |= mask; | |
102 | I915_WRITE(DEIMR, dev_priv->irq_mask); | |
3143a2bf | 103 | POSTING_READ(DEIMR); |
036a4a7d ZW |
104 | } |
105 | } | |
106 | ||
43eaea13 PZ |
107 | /** |
108 | * ilk_update_gt_irq - update GTIMR | |
109 | * @dev_priv: driver private | |
110 | * @interrupt_mask: mask of interrupt bits to update | |
111 | * @enabled_irq_mask: mask of interrupt bits to enable | |
112 | */ | |
113 | static void ilk_update_gt_irq(struct drm_i915_private *dev_priv, | |
114 | uint32_t interrupt_mask, | |
115 | uint32_t enabled_irq_mask) | |
116 | { | |
117 | assert_spin_locked(&dev_priv->irq_lock); | |
118 | ||
119 | dev_priv->gt_irq_mask &= ~interrupt_mask; | |
120 | dev_priv->gt_irq_mask |= (~enabled_irq_mask & interrupt_mask); | |
121 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); | |
122 | POSTING_READ(GTIMR); | |
123 | } | |
124 | ||
125 | void ilk_enable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask) | |
126 | { | |
127 | ilk_update_gt_irq(dev_priv, mask, mask); | |
128 | } | |
129 | ||
130 | void ilk_disable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask) | |
131 | { | |
132 | ilk_update_gt_irq(dev_priv, mask, 0); | |
133 | } | |
134 | ||
8664281b PZ |
135 | static bool ivb_can_enable_err_int(struct drm_device *dev) |
136 | { | |
137 | struct drm_i915_private *dev_priv = dev->dev_private; | |
138 | struct intel_crtc *crtc; | |
139 | enum pipe pipe; | |
140 | ||
4bc9d430 DV |
141 | assert_spin_locked(&dev_priv->irq_lock); |
142 | ||
8664281b PZ |
143 | for_each_pipe(pipe) { |
144 | crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]); | |
145 | ||
146 | if (crtc->cpu_fifo_underrun_disabled) | |
147 | return false; | |
148 | } | |
149 | ||
150 | return true; | |
151 | } | |
152 | ||
153 | static bool cpt_can_enable_serr_int(struct drm_device *dev) | |
154 | { | |
155 | struct drm_i915_private *dev_priv = dev->dev_private; | |
156 | enum pipe pipe; | |
157 | struct intel_crtc *crtc; | |
158 | ||
fee884ed DV |
159 | assert_spin_locked(&dev_priv->irq_lock); |
160 | ||
8664281b PZ |
161 | for_each_pipe(pipe) { |
162 | crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]); | |
163 | ||
164 | if (crtc->pch_fifo_underrun_disabled) | |
165 | return false; | |
166 | } | |
167 | ||
168 | return true; | |
169 | } | |
170 | ||
171 | static void ironlake_set_fifo_underrun_reporting(struct drm_device *dev, | |
172 | enum pipe pipe, bool enable) | |
173 | { | |
174 | struct drm_i915_private *dev_priv = dev->dev_private; | |
175 | uint32_t bit = (pipe == PIPE_A) ? DE_PIPEA_FIFO_UNDERRUN : | |
176 | DE_PIPEB_FIFO_UNDERRUN; | |
177 | ||
178 | if (enable) | |
179 | ironlake_enable_display_irq(dev_priv, bit); | |
180 | else | |
181 | ironlake_disable_display_irq(dev_priv, bit); | |
182 | } | |
183 | ||
184 | static void ivybridge_set_fifo_underrun_reporting(struct drm_device *dev, | |
7336df65 | 185 | enum pipe pipe, bool enable) |
8664281b PZ |
186 | { |
187 | struct drm_i915_private *dev_priv = dev->dev_private; | |
8664281b | 188 | if (enable) { |
7336df65 DV |
189 | I915_WRITE(GEN7_ERR_INT, ERR_INT_FIFO_UNDERRUN(pipe)); |
190 | ||
8664281b PZ |
191 | if (!ivb_can_enable_err_int(dev)) |
192 | return; | |
193 | ||
8664281b PZ |
194 | ironlake_enable_display_irq(dev_priv, DE_ERR_INT_IVB); |
195 | } else { | |
7336df65 DV |
196 | bool was_enabled = !(I915_READ(DEIMR) & DE_ERR_INT_IVB); |
197 | ||
198 | /* Change the state _after_ we've read out the current one. */ | |
8664281b | 199 | ironlake_disable_display_irq(dev_priv, DE_ERR_INT_IVB); |
7336df65 DV |
200 | |
201 | if (!was_enabled && | |
202 | (I915_READ(GEN7_ERR_INT) & ERR_INT_FIFO_UNDERRUN(pipe))) { | |
203 | DRM_DEBUG_KMS("uncleared fifo underrun on pipe %c\n", | |
204 | pipe_name(pipe)); | |
205 | } | |
8664281b PZ |
206 | } |
207 | } | |
208 | ||
fee884ed DV |
209 | /** |
210 | * ibx_display_interrupt_update - update SDEIMR | |
211 | * @dev_priv: driver private | |
212 | * @interrupt_mask: mask of interrupt bits to update | |
213 | * @enabled_irq_mask: mask of interrupt bits to enable | |
214 | */ | |
215 | static void ibx_display_interrupt_update(struct drm_i915_private *dev_priv, | |
216 | uint32_t interrupt_mask, | |
217 | uint32_t enabled_irq_mask) | |
218 | { | |
219 | uint32_t sdeimr = I915_READ(SDEIMR); | |
220 | sdeimr &= ~interrupt_mask; | |
221 | sdeimr |= (~enabled_irq_mask & interrupt_mask); | |
222 | ||
223 | assert_spin_locked(&dev_priv->irq_lock); | |
224 | ||
225 | I915_WRITE(SDEIMR, sdeimr); | |
226 | POSTING_READ(SDEIMR); | |
227 | } | |
228 | #define ibx_enable_display_interrupt(dev_priv, bits) \ | |
229 | ibx_display_interrupt_update((dev_priv), (bits), (bits)) | |
230 | #define ibx_disable_display_interrupt(dev_priv, bits) \ | |
231 | ibx_display_interrupt_update((dev_priv), (bits), 0) | |
232 | ||
de28075d DV |
233 | static void ibx_set_fifo_underrun_reporting(struct drm_device *dev, |
234 | enum transcoder pch_transcoder, | |
8664281b PZ |
235 | bool enable) |
236 | { | |
8664281b | 237 | struct drm_i915_private *dev_priv = dev->dev_private; |
de28075d DV |
238 | uint32_t bit = (pch_transcoder == TRANSCODER_A) ? |
239 | SDE_TRANSA_FIFO_UNDER : SDE_TRANSB_FIFO_UNDER; | |
8664281b PZ |
240 | |
241 | if (enable) | |
fee884ed | 242 | ibx_enable_display_interrupt(dev_priv, bit); |
8664281b | 243 | else |
fee884ed | 244 | ibx_disable_display_interrupt(dev_priv, bit); |
8664281b PZ |
245 | } |
246 | ||
247 | static void cpt_set_fifo_underrun_reporting(struct drm_device *dev, | |
248 | enum transcoder pch_transcoder, | |
249 | bool enable) | |
250 | { | |
251 | struct drm_i915_private *dev_priv = dev->dev_private; | |
252 | ||
253 | if (enable) { | |
1dd246fb DV |
254 | I915_WRITE(SERR_INT, |
255 | SERR_INT_TRANS_FIFO_UNDERRUN(pch_transcoder)); | |
256 | ||
8664281b PZ |
257 | if (!cpt_can_enable_serr_int(dev)) |
258 | return; | |
259 | ||
fee884ed | 260 | ibx_enable_display_interrupt(dev_priv, SDE_ERROR_CPT); |
8664281b | 261 | } else { |
1dd246fb DV |
262 | uint32_t tmp = I915_READ(SERR_INT); |
263 | bool was_enabled = !(I915_READ(SDEIMR) & SDE_ERROR_CPT); | |
264 | ||
265 | /* Change the state _after_ we've read out the current one. */ | |
fee884ed | 266 | ibx_disable_display_interrupt(dev_priv, SDE_ERROR_CPT); |
1dd246fb DV |
267 | |
268 | if (!was_enabled && | |
269 | (tmp & SERR_INT_TRANS_FIFO_UNDERRUN(pch_transcoder))) { | |
270 | DRM_DEBUG_KMS("uncleared pch fifo underrun on pch transcoder %c\n", | |
271 | transcoder_name(pch_transcoder)); | |
272 | } | |
8664281b | 273 | } |
8664281b PZ |
274 | } |
275 | ||
276 | /** | |
277 | * intel_set_cpu_fifo_underrun_reporting - enable/disable FIFO underrun messages | |
278 | * @dev: drm device | |
279 | * @pipe: pipe | |
280 | * @enable: true if we want to report FIFO underrun errors, false otherwise | |
281 | * | |
282 | * This function makes us disable or enable CPU fifo underruns for a specific | |
283 | * pipe. Notice that on some Gens (e.g. IVB, HSW), disabling FIFO underrun | |
284 | * reporting for one pipe may also disable all the other CPU error interruts for | |
285 | * the other pipes, due to the fact that there's just one interrupt mask/enable | |
286 | * bit for all the pipes. | |
287 | * | |
288 | * Returns the previous state of underrun reporting. | |
289 | */ | |
290 | bool intel_set_cpu_fifo_underrun_reporting(struct drm_device *dev, | |
291 | enum pipe pipe, bool enable) | |
292 | { | |
293 | struct drm_i915_private *dev_priv = dev->dev_private; | |
294 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
295 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
296 | unsigned long flags; | |
297 | bool ret; | |
298 | ||
299 | spin_lock_irqsave(&dev_priv->irq_lock, flags); | |
300 | ||
301 | ret = !intel_crtc->cpu_fifo_underrun_disabled; | |
302 | ||
303 | if (enable == ret) | |
304 | goto done; | |
305 | ||
306 | intel_crtc->cpu_fifo_underrun_disabled = !enable; | |
307 | ||
308 | if (IS_GEN5(dev) || IS_GEN6(dev)) | |
309 | ironlake_set_fifo_underrun_reporting(dev, pipe, enable); | |
310 | else if (IS_GEN7(dev)) | |
7336df65 | 311 | ivybridge_set_fifo_underrun_reporting(dev, pipe, enable); |
8664281b PZ |
312 | |
313 | done: | |
314 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); | |
315 | return ret; | |
316 | } | |
317 | ||
318 | /** | |
319 | * intel_set_pch_fifo_underrun_reporting - enable/disable FIFO underrun messages | |
320 | * @dev: drm device | |
321 | * @pch_transcoder: the PCH transcoder (same as pipe on IVB and older) | |
322 | * @enable: true if we want to report FIFO underrun errors, false otherwise | |
323 | * | |
324 | * This function makes us disable or enable PCH fifo underruns for a specific | |
325 | * PCH transcoder. Notice that on some PCHs (e.g. CPT/PPT), disabling FIFO | |
326 | * underrun reporting for one transcoder may also disable all the other PCH | |
327 | * error interruts for the other transcoders, due to the fact that there's just | |
328 | * one interrupt mask/enable bit for all the transcoders. | |
329 | * | |
330 | * Returns the previous state of underrun reporting. | |
331 | */ | |
332 | bool intel_set_pch_fifo_underrun_reporting(struct drm_device *dev, | |
333 | enum transcoder pch_transcoder, | |
334 | bool enable) | |
335 | { | |
336 | struct drm_i915_private *dev_priv = dev->dev_private; | |
de28075d DV |
337 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pch_transcoder]; |
338 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
8664281b PZ |
339 | unsigned long flags; |
340 | bool ret; | |
341 | ||
de28075d DV |
342 | /* |
343 | * NOTE: Pre-LPT has a fixed cpu pipe -> pch transcoder mapping, but LPT | |
344 | * has only one pch transcoder A that all pipes can use. To avoid racy | |
345 | * pch transcoder -> pipe lookups from interrupt code simply store the | |
346 | * underrun statistics in crtc A. Since we never expose this anywhere | |
347 | * nor use it outside of the fifo underrun code here using the "wrong" | |
348 | * crtc on LPT won't cause issues. | |
349 | */ | |
8664281b PZ |
350 | |
351 | spin_lock_irqsave(&dev_priv->irq_lock, flags); | |
352 | ||
353 | ret = !intel_crtc->pch_fifo_underrun_disabled; | |
354 | ||
355 | if (enable == ret) | |
356 | goto done; | |
357 | ||
358 | intel_crtc->pch_fifo_underrun_disabled = !enable; | |
359 | ||
360 | if (HAS_PCH_IBX(dev)) | |
de28075d | 361 | ibx_set_fifo_underrun_reporting(dev, pch_transcoder, enable); |
8664281b PZ |
362 | else |
363 | cpt_set_fifo_underrun_reporting(dev, pch_transcoder, enable); | |
364 | ||
365 | done: | |
366 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); | |
367 | return ret; | |
368 | } | |
369 | ||
370 | ||
7c463586 KP |
371 | void |
372 | i915_enable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask) | |
373 | { | |
46c06a30 VS |
374 | u32 reg = PIPESTAT(pipe); |
375 | u32 pipestat = I915_READ(reg) & 0x7fff0000; | |
7c463586 | 376 | |
b79480ba DV |
377 | assert_spin_locked(&dev_priv->irq_lock); |
378 | ||
46c06a30 VS |
379 | if ((pipestat & mask) == mask) |
380 | return; | |
381 | ||
382 | /* Enable the interrupt, clear any pending status */ | |
383 | pipestat |= mask | (mask >> 16); | |
384 | I915_WRITE(reg, pipestat); | |
385 | POSTING_READ(reg); | |
7c463586 KP |
386 | } |
387 | ||
388 | void | |
389 | i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask) | |
390 | { | |
46c06a30 VS |
391 | u32 reg = PIPESTAT(pipe); |
392 | u32 pipestat = I915_READ(reg) & 0x7fff0000; | |
7c463586 | 393 | |
b79480ba DV |
394 | assert_spin_locked(&dev_priv->irq_lock); |
395 | ||
46c06a30 VS |
396 | if ((pipestat & mask) == 0) |
397 | return; | |
398 | ||
399 | pipestat &= ~mask; | |
400 | I915_WRITE(reg, pipestat); | |
401 | POSTING_READ(reg); | |
7c463586 KP |
402 | } |
403 | ||
01c66889 | 404 | /** |
f49e38dd | 405 | * i915_enable_asle_pipestat - enable ASLE pipestat for OpRegion |
01c66889 | 406 | */ |
f49e38dd | 407 | static void i915_enable_asle_pipestat(struct drm_device *dev) |
01c66889 | 408 | { |
1ec14ad3 CW |
409 | drm_i915_private_t *dev_priv = dev->dev_private; |
410 | unsigned long irqflags; | |
411 | ||
f49e38dd JN |
412 | if (!dev_priv->opregion.asle || !IS_MOBILE(dev)) |
413 | return; | |
414 | ||
1ec14ad3 | 415 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
01c66889 | 416 | |
f898780b JN |
417 | i915_enable_pipestat(dev_priv, 1, PIPE_LEGACY_BLC_EVENT_ENABLE); |
418 | if (INTEL_INFO(dev)->gen >= 4) | |
419 | i915_enable_pipestat(dev_priv, 0, PIPE_LEGACY_BLC_EVENT_ENABLE); | |
1ec14ad3 CW |
420 | |
421 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
01c66889 ZY |
422 | } |
423 | ||
0a3e67a4 JB |
424 | /** |
425 | * i915_pipe_enabled - check if a pipe is enabled | |
426 | * @dev: DRM device | |
427 | * @pipe: pipe to check | |
428 | * | |
429 | * Reading certain registers when the pipe is disabled can hang the chip. | |
430 | * Use this routine to make sure the PLL is running and the pipe is active | |
431 | * before reading such registers if unsure. | |
432 | */ | |
433 | static int | |
434 | i915_pipe_enabled(struct drm_device *dev, int pipe) | |
435 | { | |
436 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
702e7a56 | 437 | |
a01025af DV |
438 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { |
439 | /* Locking is horribly broken here, but whatever. */ | |
440 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
441 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
71f8ba6b | 442 | |
a01025af DV |
443 | return intel_crtc->active; |
444 | } else { | |
445 | return I915_READ(PIPECONF(pipe)) & PIPECONF_ENABLE; | |
446 | } | |
0a3e67a4 JB |
447 | } |
448 | ||
42f52ef8 KP |
449 | /* Called from drm generic code, passed a 'crtc', which |
450 | * we use as a pipe index | |
451 | */ | |
f71d4af4 | 452 | static u32 i915_get_vblank_counter(struct drm_device *dev, int pipe) |
0a3e67a4 JB |
453 | { |
454 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
455 | unsigned long high_frame; | |
456 | unsigned long low_frame; | |
5eddb70b | 457 | u32 high1, high2, low; |
0a3e67a4 JB |
458 | |
459 | if (!i915_pipe_enabled(dev, pipe)) { | |
44d98a61 | 460 | DRM_DEBUG_DRIVER("trying to get vblank count for disabled " |
9db4a9c7 | 461 | "pipe %c\n", pipe_name(pipe)); |
0a3e67a4 JB |
462 | return 0; |
463 | } | |
464 | ||
9db4a9c7 JB |
465 | high_frame = PIPEFRAME(pipe); |
466 | low_frame = PIPEFRAMEPIXEL(pipe); | |
5eddb70b | 467 | |
0a3e67a4 JB |
468 | /* |
469 | * High & low register fields aren't synchronized, so make sure | |
470 | * we get a low value that's stable across two reads of the high | |
471 | * register. | |
472 | */ | |
473 | do { | |
5eddb70b CW |
474 | high1 = I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK; |
475 | low = I915_READ(low_frame) & PIPE_FRAME_LOW_MASK; | |
476 | high2 = I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK; | |
0a3e67a4 JB |
477 | } while (high1 != high2); |
478 | ||
5eddb70b CW |
479 | high1 >>= PIPE_FRAME_HIGH_SHIFT; |
480 | low >>= PIPE_FRAME_LOW_SHIFT; | |
481 | return (high1 << 8) | low; | |
0a3e67a4 JB |
482 | } |
483 | ||
f71d4af4 | 484 | static u32 gm45_get_vblank_counter(struct drm_device *dev, int pipe) |
9880b7a5 JB |
485 | { |
486 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
9db4a9c7 | 487 | int reg = PIPE_FRMCOUNT_GM45(pipe); |
9880b7a5 JB |
488 | |
489 | if (!i915_pipe_enabled(dev, pipe)) { | |
44d98a61 | 490 | DRM_DEBUG_DRIVER("trying to get vblank count for disabled " |
9db4a9c7 | 491 | "pipe %c\n", pipe_name(pipe)); |
9880b7a5 JB |
492 | return 0; |
493 | } | |
494 | ||
495 | return I915_READ(reg); | |
496 | } | |
497 | ||
f71d4af4 | 498 | static int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe, |
0af7e4df MK |
499 | int *vpos, int *hpos) |
500 | { | |
501 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
502 | u32 vbl = 0, position = 0; | |
503 | int vbl_start, vbl_end, htotal, vtotal; | |
504 | bool in_vbl = true; | |
505 | int ret = 0; | |
fe2b8f9d PZ |
506 | enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv, |
507 | pipe); | |
0af7e4df MK |
508 | |
509 | if (!i915_pipe_enabled(dev, pipe)) { | |
510 | DRM_DEBUG_DRIVER("trying to get scanoutpos for disabled " | |
9db4a9c7 | 511 | "pipe %c\n", pipe_name(pipe)); |
0af7e4df MK |
512 | return 0; |
513 | } | |
514 | ||
515 | /* Get vtotal. */ | |
fe2b8f9d | 516 | vtotal = 1 + ((I915_READ(VTOTAL(cpu_transcoder)) >> 16) & 0x1fff); |
0af7e4df MK |
517 | |
518 | if (INTEL_INFO(dev)->gen >= 4) { | |
519 | /* No obvious pixelcount register. Only query vertical | |
520 | * scanout position from Display scan line register. | |
521 | */ | |
522 | position = I915_READ(PIPEDSL(pipe)); | |
523 | ||
524 | /* Decode into vertical scanout position. Don't have | |
525 | * horizontal scanout position. | |
526 | */ | |
527 | *vpos = position & 0x1fff; | |
528 | *hpos = 0; | |
529 | } else { | |
530 | /* Have access to pixelcount since start of frame. | |
531 | * We can split this into vertical and horizontal | |
532 | * scanout position. | |
533 | */ | |
534 | position = (I915_READ(PIPEFRAMEPIXEL(pipe)) & PIPE_PIXEL_MASK) >> PIPE_PIXEL_SHIFT; | |
535 | ||
fe2b8f9d | 536 | htotal = 1 + ((I915_READ(HTOTAL(cpu_transcoder)) >> 16) & 0x1fff); |
0af7e4df MK |
537 | *vpos = position / htotal; |
538 | *hpos = position - (*vpos * htotal); | |
539 | } | |
540 | ||
541 | /* Query vblank area. */ | |
fe2b8f9d | 542 | vbl = I915_READ(VBLANK(cpu_transcoder)); |
0af7e4df MK |
543 | |
544 | /* Test position against vblank region. */ | |
545 | vbl_start = vbl & 0x1fff; | |
546 | vbl_end = (vbl >> 16) & 0x1fff; | |
547 | ||
548 | if ((*vpos < vbl_start) || (*vpos > vbl_end)) | |
549 | in_vbl = false; | |
550 | ||
551 | /* Inside "upper part" of vblank area? Apply corrective offset: */ | |
552 | if (in_vbl && (*vpos >= vbl_start)) | |
553 | *vpos = *vpos - vtotal; | |
554 | ||
555 | /* Readouts valid? */ | |
556 | if (vbl > 0) | |
557 | ret |= DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE; | |
558 | ||
559 | /* In vblank? */ | |
560 | if (in_vbl) | |
561 | ret |= DRM_SCANOUTPOS_INVBL; | |
562 | ||
563 | return ret; | |
564 | } | |
565 | ||
f71d4af4 | 566 | static int i915_get_vblank_timestamp(struct drm_device *dev, int pipe, |
0af7e4df MK |
567 | int *max_error, |
568 | struct timeval *vblank_time, | |
569 | unsigned flags) | |
570 | { | |
4041b853 | 571 | struct drm_crtc *crtc; |
0af7e4df | 572 | |
7eb552ae | 573 | if (pipe < 0 || pipe >= INTEL_INFO(dev)->num_pipes) { |
4041b853 | 574 | DRM_ERROR("Invalid crtc %d\n", pipe); |
0af7e4df MK |
575 | return -EINVAL; |
576 | } | |
577 | ||
578 | /* Get drm_crtc to timestamp: */ | |
4041b853 CW |
579 | crtc = intel_get_crtc_for_pipe(dev, pipe); |
580 | if (crtc == NULL) { | |
581 | DRM_ERROR("Invalid crtc %d\n", pipe); | |
582 | return -EINVAL; | |
583 | } | |
584 | ||
585 | if (!crtc->enabled) { | |
586 | DRM_DEBUG_KMS("crtc %d is disabled\n", pipe); | |
587 | return -EBUSY; | |
588 | } | |
0af7e4df MK |
589 | |
590 | /* Helper routine in DRM core does all the work: */ | |
4041b853 CW |
591 | return drm_calc_vbltimestamp_from_scanoutpos(dev, pipe, max_error, |
592 | vblank_time, flags, | |
593 | crtc); | |
0af7e4df MK |
594 | } |
595 | ||
321a1b30 EE |
596 | static int intel_hpd_irq_event(struct drm_device *dev, struct drm_connector *connector) |
597 | { | |
598 | enum drm_connector_status old_status; | |
599 | ||
600 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); | |
601 | old_status = connector->status; | |
602 | ||
603 | connector->status = connector->funcs->detect(connector, false); | |
604 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", | |
605 | connector->base.id, | |
606 | drm_get_connector_name(connector), | |
607 | old_status, connector->status); | |
608 | return (old_status != connector->status); | |
609 | } | |
610 | ||
5ca58282 JB |
611 | /* |
612 | * Handle hotplug events outside the interrupt handler proper. | |
613 | */ | |
ac4c16c5 EE |
614 | #define I915_REENABLE_HOTPLUG_DELAY (2*60*1000) |
615 | ||
5ca58282 JB |
616 | static void i915_hotplug_work_func(struct work_struct *work) |
617 | { | |
618 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, | |
619 | hotplug_work); | |
620 | struct drm_device *dev = dev_priv->dev; | |
c31c4ba3 | 621 | struct drm_mode_config *mode_config = &dev->mode_config; |
cd569aed EE |
622 | struct intel_connector *intel_connector; |
623 | struct intel_encoder *intel_encoder; | |
624 | struct drm_connector *connector; | |
625 | unsigned long irqflags; | |
626 | bool hpd_disabled = false; | |
321a1b30 | 627 | bool changed = false; |
142e2398 | 628 | u32 hpd_event_bits; |
4ef69c7a | 629 | |
52d7eced DV |
630 | /* HPD irq before everything is fully set up. */ |
631 | if (!dev_priv->enable_hotplug_processing) | |
632 | return; | |
633 | ||
a65e34c7 | 634 | mutex_lock(&mode_config->mutex); |
e67189ab JB |
635 | DRM_DEBUG_KMS("running encoder hotplug functions\n"); |
636 | ||
cd569aed | 637 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
142e2398 EE |
638 | |
639 | hpd_event_bits = dev_priv->hpd_event_bits; | |
640 | dev_priv->hpd_event_bits = 0; | |
cd569aed EE |
641 | list_for_each_entry(connector, &mode_config->connector_list, head) { |
642 | intel_connector = to_intel_connector(connector); | |
643 | intel_encoder = intel_connector->encoder; | |
644 | if (intel_encoder->hpd_pin > HPD_NONE && | |
645 | dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_MARK_DISABLED && | |
646 | connector->polled == DRM_CONNECTOR_POLL_HPD) { | |
647 | DRM_INFO("HPD interrupt storm detected on connector %s: " | |
648 | "switching from hotplug detection to polling\n", | |
649 | drm_get_connector_name(connector)); | |
650 | dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark = HPD_DISABLED; | |
651 | connector->polled = DRM_CONNECTOR_POLL_CONNECT | |
652 | | DRM_CONNECTOR_POLL_DISCONNECT; | |
653 | hpd_disabled = true; | |
654 | } | |
142e2398 EE |
655 | if (hpd_event_bits & (1 << intel_encoder->hpd_pin)) { |
656 | DRM_DEBUG_KMS("Connector %s (pin %i) received hotplug event.\n", | |
657 | drm_get_connector_name(connector), intel_encoder->hpd_pin); | |
658 | } | |
cd569aed EE |
659 | } |
660 | /* if there were no outputs to poll, poll was disabled, | |
661 | * therefore make sure it's enabled when disabling HPD on | |
662 | * some connectors */ | |
ac4c16c5 | 663 | if (hpd_disabled) { |
cd569aed | 664 | drm_kms_helper_poll_enable(dev); |
ac4c16c5 EE |
665 | mod_timer(&dev_priv->hotplug_reenable_timer, |
666 | jiffies + msecs_to_jiffies(I915_REENABLE_HOTPLUG_DELAY)); | |
667 | } | |
cd569aed EE |
668 | |
669 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
670 | ||
321a1b30 EE |
671 | list_for_each_entry(connector, &mode_config->connector_list, head) { |
672 | intel_connector = to_intel_connector(connector); | |
673 | intel_encoder = intel_connector->encoder; | |
674 | if (hpd_event_bits & (1 << intel_encoder->hpd_pin)) { | |
675 | if (intel_encoder->hot_plug) | |
676 | intel_encoder->hot_plug(intel_encoder); | |
677 | if (intel_hpd_irq_event(dev, connector)) | |
678 | changed = true; | |
679 | } | |
680 | } | |
40ee3381 KP |
681 | mutex_unlock(&mode_config->mutex); |
682 | ||
321a1b30 EE |
683 | if (changed) |
684 | drm_kms_helper_hotplug_event(dev); | |
5ca58282 JB |
685 | } |
686 | ||
d0ecd7e2 | 687 | static void ironlake_rps_change_irq_handler(struct drm_device *dev) |
f97108d1 JB |
688 | { |
689 | drm_i915_private_t *dev_priv = dev->dev_private; | |
b5b72e89 | 690 | u32 busy_up, busy_down, max_avg, min_avg; |
9270388e | 691 | u8 new_delay; |
9270388e | 692 | |
d0ecd7e2 | 693 | spin_lock(&mchdev_lock); |
f97108d1 | 694 | |
73edd18f DV |
695 | I915_WRITE16(MEMINTRSTS, I915_READ(MEMINTRSTS)); |
696 | ||
20e4d407 | 697 | new_delay = dev_priv->ips.cur_delay; |
9270388e | 698 | |
7648fa99 | 699 | I915_WRITE16(MEMINTRSTS, MEMINT_EVAL_CHG); |
b5b72e89 MG |
700 | busy_up = I915_READ(RCPREVBSYTUPAVG); |
701 | busy_down = I915_READ(RCPREVBSYTDNAVG); | |
f97108d1 JB |
702 | max_avg = I915_READ(RCBMAXAVG); |
703 | min_avg = I915_READ(RCBMINAVG); | |
704 | ||
705 | /* Handle RCS change request from hw */ | |
b5b72e89 | 706 | if (busy_up > max_avg) { |
20e4d407 DV |
707 | if (dev_priv->ips.cur_delay != dev_priv->ips.max_delay) |
708 | new_delay = dev_priv->ips.cur_delay - 1; | |
709 | if (new_delay < dev_priv->ips.max_delay) | |
710 | new_delay = dev_priv->ips.max_delay; | |
b5b72e89 | 711 | } else if (busy_down < min_avg) { |
20e4d407 DV |
712 | if (dev_priv->ips.cur_delay != dev_priv->ips.min_delay) |
713 | new_delay = dev_priv->ips.cur_delay + 1; | |
714 | if (new_delay > dev_priv->ips.min_delay) | |
715 | new_delay = dev_priv->ips.min_delay; | |
f97108d1 JB |
716 | } |
717 | ||
7648fa99 | 718 | if (ironlake_set_drps(dev, new_delay)) |
20e4d407 | 719 | dev_priv->ips.cur_delay = new_delay; |
f97108d1 | 720 | |
d0ecd7e2 | 721 | spin_unlock(&mchdev_lock); |
9270388e | 722 | |
f97108d1 JB |
723 | return; |
724 | } | |
725 | ||
549f7365 CW |
726 | static void notify_ring(struct drm_device *dev, |
727 | struct intel_ring_buffer *ring) | |
728 | { | |
475553de CW |
729 | if (ring->obj == NULL) |
730 | return; | |
731 | ||
b2eadbc8 | 732 | trace_i915_gem_request_complete(ring, ring->get_seqno(ring, false)); |
9862e600 | 733 | |
549f7365 | 734 | wake_up_all(&ring->irq_queue); |
10cd45b6 | 735 | i915_queue_hangcheck(dev); |
549f7365 CW |
736 | } |
737 | ||
4912d041 | 738 | static void gen6_pm_rps_work(struct work_struct *work) |
3b8d8d91 | 739 | { |
4912d041 | 740 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, |
c6a828d3 | 741 | rps.work); |
4912d041 | 742 | u32 pm_iir, pm_imr; |
7b9e0ae6 | 743 | u8 new_delay; |
4912d041 | 744 | |
59cdb63d | 745 | spin_lock_irq(&dev_priv->irq_lock); |
c6a828d3 DV |
746 | pm_iir = dev_priv->rps.pm_iir; |
747 | dev_priv->rps.pm_iir = 0; | |
4912d041 | 748 | pm_imr = I915_READ(GEN6_PMIMR); |
4848405c BW |
749 | /* Make sure not to corrupt PMIMR state used by ringbuffer code */ |
750 | I915_WRITE(GEN6_PMIMR, pm_imr & ~GEN6_PM_RPS_EVENTS); | |
59cdb63d | 751 | spin_unlock_irq(&dev_priv->irq_lock); |
3b8d8d91 | 752 | |
4848405c | 753 | if ((pm_iir & GEN6_PM_RPS_EVENTS) == 0) |
3b8d8d91 JB |
754 | return; |
755 | ||
4fc688ce | 756 | mutex_lock(&dev_priv->rps.hw_lock); |
7b9e0ae6 | 757 | |
7425034a | 758 | if (pm_iir & GEN6_PM_RP_UP_THRESHOLD) { |
c6a828d3 | 759 | new_delay = dev_priv->rps.cur_delay + 1; |
7425034a VS |
760 | |
761 | /* | |
762 | * For better performance, jump directly | |
763 | * to RPe if we're below it. | |
764 | */ | |
765 | if (IS_VALLEYVIEW(dev_priv->dev) && | |
766 | dev_priv->rps.cur_delay < dev_priv->rps.rpe_delay) | |
767 | new_delay = dev_priv->rps.rpe_delay; | |
768 | } else | |
c6a828d3 | 769 | new_delay = dev_priv->rps.cur_delay - 1; |
3b8d8d91 | 770 | |
79249636 BW |
771 | /* sysfs frequency interfaces may have snuck in while servicing the |
772 | * interrupt | |
773 | */ | |
d8289c9e VS |
774 | if (new_delay >= dev_priv->rps.min_delay && |
775 | new_delay <= dev_priv->rps.max_delay) { | |
0a073b84 JB |
776 | if (IS_VALLEYVIEW(dev_priv->dev)) |
777 | valleyview_set_rps(dev_priv->dev, new_delay); | |
778 | else | |
779 | gen6_set_rps(dev_priv->dev, new_delay); | |
79249636 | 780 | } |
3b8d8d91 | 781 | |
52ceb908 JB |
782 | if (IS_VALLEYVIEW(dev_priv->dev)) { |
783 | /* | |
784 | * On VLV, when we enter RC6 we may not be at the minimum | |
785 | * voltage level, so arm a timer to check. It should only | |
786 | * fire when there's activity or once after we've entered | |
787 | * RC6, and then won't be re-armed until the next RPS interrupt. | |
788 | */ | |
789 | mod_delayed_work(dev_priv->wq, &dev_priv->rps.vlv_work, | |
790 | msecs_to_jiffies(100)); | |
791 | } | |
792 | ||
4fc688ce | 793 | mutex_unlock(&dev_priv->rps.hw_lock); |
3b8d8d91 JB |
794 | } |
795 | ||
e3689190 BW |
796 | |
797 | /** | |
798 | * ivybridge_parity_work - Workqueue called when a parity error interrupt | |
799 | * occurred. | |
800 | * @work: workqueue struct | |
801 | * | |
802 | * Doesn't actually do anything except notify userspace. As a consequence of | |
803 | * this event, userspace should try to remap the bad rows since statistically | |
804 | * it is likely the same row is more likely to go bad again. | |
805 | */ | |
806 | static void ivybridge_parity_work(struct work_struct *work) | |
807 | { | |
808 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, | |
a4da4fa4 | 809 | l3_parity.error_work); |
e3689190 BW |
810 | u32 error_status, row, bank, subbank; |
811 | char *parity_event[5]; | |
812 | uint32_t misccpctl; | |
813 | unsigned long flags; | |
814 | ||
815 | /* We must turn off DOP level clock gating to access the L3 registers. | |
816 | * In order to prevent a get/put style interface, acquire struct mutex | |
817 | * any time we access those registers. | |
818 | */ | |
819 | mutex_lock(&dev_priv->dev->struct_mutex); | |
820 | ||
821 | misccpctl = I915_READ(GEN7_MISCCPCTL); | |
822 | I915_WRITE(GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE); | |
823 | POSTING_READ(GEN7_MISCCPCTL); | |
824 | ||
825 | error_status = I915_READ(GEN7_L3CDERRST1); | |
826 | row = GEN7_PARITY_ERROR_ROW(error_status); | |
827 | bank = GEN7_PARITY_ERROR_BANK(error_status); | |
828 | subbank = GEN7_PARITY_ERROR_SUBBANK(error_status); | |
829 | ||
830 | I915_WRITE(GEN7_L3CDERRST1, GEN7_PARITY_ERROR_VALID | | |
831 | GEN7_L3CDERRST1_ENABLE); | |
832 | POSTING_READ(GEN7_L3CDERRST1); | |
833 | ||
834 | I915_WRITE(GEN7_MISCCPCTL, misccpctl); | |
835 | ||
836 | spin_lock_irqsave(&dev_priv->irq_lock, flags); | |
43eaea13 | 837 | ilk_enable_gt_irq(dev_priv, GT_RENDER_L3_PARITY_ERROR_INTERRUPT); |
e3689190 BW |
838 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
839 | ||
840 | mutex_unlock(&dev_priv->dev->struct_mutex); | |
841 | ||
cce723ed | 842 | parity_event[0] = I915_L3_PARITY_UEVENT "=1"; |
e3689190 BW |
843 | parity_event[1] = kasprintf(GFP_KERNEL, "ROW=%d", row); |
844 | parity_event[2] = kasprintf(GFP_KERNEL, "BANK=%d", bank); | |
845 | parity_event[3] = kasprintf(GFP_KERNEL, "SUBBANK=%d", subbank); | |
846 | parity_event[4] = NULL; | |
847 | ||
848 | kobject_uevent_env(&dev_priv->dev->primary->kdev.kobj, | |
849 | KOBJ_CHANGE, parity_event); | |
850 | ||
851 | DRM_DEBUG("Parity error: Row = %d, Bank = %d, Sub bank = %d.\n", | |
852 | row, bank, subbank); | |
853 | ||
854 | kfree(parity_event[3]); | |
855 | kfree(parity_event[2]); | |
856 | kfree(parity_event[1]); | |
857 | } | |
858 | ||
d0ecd7e2 | 859 | static void ivybridge_parity_error_irq_handler(struct drm_device *dev) |
e3689190 BW |
860 | { |
861 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
e3689190 | 862 | |
e1ef7cc2 | 863 | if (!HAS_L3_GPU_CACHE(dev)) |
e3689190 BW |
864 | return; |
865 | ||
d0ecd7e2 | 866 | spin_lock(&dev_priv->irq_lock); |
43eaea13 | 867 | ilk_disable_gt_irq(dev_priv, GT_RENDER_L3_PARITY_ERROR_INTERRUPT); |
d0ecd7e2 | 868 | spin_unlock(&dev_priv->irq_lock); |
e3689190 | 869 | |
a4da4fa4 | 870 | queue_work(dev_priv->wq, &dev_priv->l3_parity.error_work); |
e3689190 BW |
871 | } |
872 | ||
f1af8fc1 PZ |
873 | static void ilk_gt_irq_handler(struct drm_device *dev, |
874 | struct drm_i915_private *dev_priv, | |
875 | u32 gt_iir) | |
876 | { | |
877 | if (gt_iir & | |
878 | (GT_RENDER_USER_INTERRUPT | GT_RENDER_PIPECTL_NOTIFY_INTERRUPT)) | |
879 | notify_ring(dev, &dev_priv->ring[RCS]); | |
880 | if (gt_iir & ILK_BSD_USER_INTERRUPT) | |
881 | notify_ring(dev, &dev_priv->ring[VCS]); | |
882 | } | |
883 | ||
e7b4c6b1 DV |
884 | static void snb_gt_irq_handler(struct drm_device *dev, |
885 | struct drm_i915_private *dev_priv, | |
886 | u32 gt_iir) | |
887 | { | |
888 | ||
cc609d5d BW |
889 | if (gt_iir & |
890 | (GT_RENDER_USER_INTERRUPT | GT_RENDER_PIPECTL_NOTIFY_INTERRUPT)) | |
e7b4c6b1 | 891 | notify_ring(dev, &dev_priv->ring[RCS]); |
cc609d5d | 892 | if (gt_iir & GT_BSD_USER_INTERRUPT) |
e7b4c6b1 | 893 | notify_ring(dev, &dev_priv->ring[VCS]); |
cc609d5d | 894 | if (gt_iir & GT_BLT_USER_INTERRUPT) |
e7b4c6b1 DV |
895 | notify_ring(dev, &dev_priv->ring[BCS]); |
896 | ||
cc609d5d BW |
897 | if (gt_iir & (GT_BLT_CS_ERROR_INTERRUPT | |
898 | GT_BSD_CS_ERROR_INTERRUPT | | |
899 | GT_RENDER_CS_MASTER_ERROR_INTERRUPT)) { | |
e7b4c6b1 DV |
900 | DRM_ERROR("GT error interrupt 0x%08x\n", gt_iir); |
901 | i915_handle_error(dev, false); | |
902 | } | |
e3689190 | 903 | |
cc609d5d | 904 | if (gt_iir & GT_RENDER_L3_PARITY_ERROR_INTERRUPT) |
d0ecd7e2 | 905 | ivybridge_parity_error_irq_handler(dev); |
e7b4c6b1 DV |
906 | } |
907 | ||
baf02a1f | 908 | /* Legacy way of handling PM interrupts */ |
d0ecd7e2 DV |
909 | static void gen6_rps_irq_handler(struct drm_i915_private *dev_priv, |
910 | u32 pm_iir) | |
fc6826d1 | 911 | { |
fc6826d1 CW |
912 | /* |
913 | * IIR bits should never already be set because IMR should | |
914 | * prevent an interrupt from being shown in IIR. The warning | |
915 | * displays a case where we've unsafely cleared | |
c6a828d3 | 916 | * dev_priv->rps.pm_iir. Although missing an interrupt of the same |
fc6826d1 CW |
917 | * type is not a problem, it displays a problem in the logic. |
918 | * | |
c6a828d3 | 919 | * The mask bit in IMR is cleared by dev_priv->rps.work. |
fc6826d1 CW |
920 | */ |
921 | ||
59cdb63d | 922 | spin_lock(&dev_priv->irq_lock); |
c6a828d3 DV |
923 | dev_priv->rps.pm_iir |= pm_iir; |
924 | I915_WRITE(GEN6_PMIMR, dev_priv->rps.pm_iir); | |
fc6826d1 | 925 | POSTING_READ(GEN6_PMIMR); |
59cdb63d | 926 | spin_unlock(&dev_priv->irq_lock); |
fc6826d1 | 927 | |
c6a828d3 | 928 | queue_work(dev_priv->wq, &dev_priv->rps.work); |
fc6826d1 CW |
929 | } |
930 | ||
b543fb04 EE |
931 | #define HPD_STORM_DETECT_PERIOD 1000 |
932 | #define HPD_STORM_THRESHOLD 5 | |
933 | ||
10a504de | 934 | static inline void intel_hpd_irq_handler(struct drm_device *dev, |
22062dba DV |
935 | u32 hotplug_trigger, |
936 | const u32 *hpd) | |
b543fb04 EE |
937 | { |
938 | drm_i915_private_t *dev_priv = dev->dev_private; | |
b543fb04 | 939 | int i; |
10a504de | 940 | bool storm_detected = false; |
b543fb04 | 941 | |
91d131d2 DV |
942 | if (!hotplug_trigger) |
943 | return; | |
944 | ||
b5ea2d56 | 945 | spin_lock(&dev_priv->irq_lock); |
b543fb04 | 946 | for (i = 1; i < HPD_NUM_PINS; i++) { |
821450c6 | 947 | |
b8f102e8 EE |
948 | WARN(((hpd[i] & hotplug_trigger) && |
949 | dev_priv->hpd_stats[i].hpd_mark != HPD_ENABLED), | |
950 | "Received HPD interrupt although disabled\n"); | |
951 | ||
b543fb04 EE |
952 | if (!(hpd[i] & hotplug_trigger) || |
953 | dev_priv->hpd_stats[i].hpd_mark != HPD_ENABLED) | |
954 | continue; | |
955 | ||
bc5ead8c | 956 | dev_priv->hpd_event_bits |= (1 << i); |
b543fb04 EE |
957 | if (!time_in_range(jiffies, dev_priv->hpd_stats[i].hpd_last_jiffies, |
958 | dev_priv->hpd_stats[i].hpd_last_jiffies | |
959 | + msecs_to_jiffies(HPD_STORM_DETECT_PERIOD))) { | |
960 | dev_priv->hpd_stats[i].hpd_last_jiffies = jiffies; | |
961 | dev_priv->hpd_stats[i].hpd_cnt = 0; | |
b8f102e8 | 962 | DRM_DEBUG_KMS("Received HPD interrupt on PIN %d - cnt: 0\n", i); |
b543fb04 EE |
963 | } else if (dev_priv->hpd_stats[i].hpd_cnt > HPD_STORM_THRESHOLD) { |
964 | dev_priv->hpd_stats[i].hpd_mark = HPD_MARK_DISABLED; | |
142e2398 | 965 | dev_priv->hpd_event_bits &= ~(1 << i); |
b543fb04 | 966 | DRM_DEBUG_KMS("HPD interrupt storm detected on PIN %d\n", i); |
10a504de | 967 | storm_detected = true; |
b543fb04 EE |
968 | } else { |
969 | dev_priv->hpd_stats[i].hpd_cnt++; | |
b8f102e8 EE |
970 | DRM_DEBUG_KMS("Received HPD interrupt on PIN %d - cnt: %d\n", i, |
971 | dev_priv->hpd_stats[i].hpd_cnt); | |
b543fb04 EE |
972 | } |
973 | } | |
974 | ||
10a504de DV |
975 | if (storm_detected) |
976 | dev_priv->display.hpd_irq_setup(dev); | |
b5ea2d56 | 977 | spin_unlock(&dev_priv->irq_lock); |
5876fa0d DV |
978 | |
979 | queue_work(dev_priv->wq, | |
980 | &dev_priv->hotplug_work); | |
b543fb04 EE |
981 | } |
982 | ||
515ac2bb DV |
983 | static void gmbus_irq_handler(struct drm_device *dev) |
984 | { | |
28c70f16 DV |
985 | struct drm_i915_private *dev_priv = (drm_i915_private_t *) dev->dev_private; |
986 | ||
28c70f16 | 987 | wake_up_all(&dev_priv->gmbus_wait_queue); |
515ac2bb DV |
988 | } |
989 | ||
ce99c256 DV |
990 | static void dp_aux_irq_handler(struct drm_device *dev) |
991 | { | |
9ee32fea DV |
992 | struct drm_i915_private *dev_priv = (drm_i915_private_t *) dev->dev_private; |
993 | ||
9ee32fea | 994 | wake_up_all(&dev_priv->gmbus_wait_queue); |
ce99c256 DV |
995 | } |
996 | ||
d0ecd7e2 | 997 | /* Unlike gen6_rps_irq_handler() from which this function is originally derived, |
baf02a1f BW |
998 | * we must be able to deal with other PM interrupts. This is complicated because |
999 | * of the way in which we use the masks to defer the RPS work (which for | |
1000 | * posterity is necessary because of forcewake). | |
1001 | */ | |
1002 | static void hsw_pm_irq_handler(struct drm_i915_private *dev_priv, | |
1003 | u32 pm_iir) | |
1004 | { | |
41a05a3a | 1005 | if (pm_iir & GEN6_PM_RPS_EVENTS) { |
59cdb63d | 1006 | spin_lock(&dev_priv->irq_lock); |
41a05a3a | 1007 | dev_priv->rps.pm_iir |= pm_iir & GEN6_PM_RPS_EVENTS; |
baf02a1f BW |
1008 | I915_WRITE(GEN6_PMIMR, dev_priv->rps.pm_iir); |
1009 | /* never want to mask useful interrupts. (also posting read) */ | |
4848405c | 1010 | WARN_ON(I915_READ_NOTRACE(GEN6_PMIMR) & ~GEN6_PM_RPS_EVENTS); |
59cdb63d | 1011 | spin_unlock(&dev_priv->irq_lock); |
2adbee62 DV |
1012 | |
1013 | queue_work(dev_priv->wq, &dev_priv->rps.work); | |
baf02a1f | 1014 | } |
baf02a1f | 1015 | |
41a05a3a DV |
1016 | if (pm_iir & PM_VEBOX_USER_INTERRUPT) |
1017 | notify_ring(dev_priv->dev, &dev_priv->ring[VECS]); | |
12638c57 | 1018 | |
41a05a3a DV |
1019 | if (pm_iir & PM_VEBOX_CS_ERROR_INTERRUPT) { |
1020 | DRM_ERROR("VEBOX CS error interrupt 0x%08x\n", pm_iir); | |
1021 | i915_handle_error(dev_priv->dev, false); | |
12638c57 | 1022 | } |
baf02a1f BW |
1023 | } |
1024 | ||
ff1f525e | 1025 | static irqreturn_t valleyview_irq_handler(int irq, void *arg) |
7e231dbe JB |
1026 | { |
1027 | struct drm_device *dev = (struct drm_device *) arg; | |
1028 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1029 | u32 iir, gt_iir, pm_iir; | |
1030 | irqreturn_t ret = IRQ_NONE; | |
1031 | unsigned long irqflags; | |
1032 | int pipe; | |
1033 | u32 pipe_stats[I915_MAX_PIPES]; | |
7e231dbe JB |
1034 | |
1035 | atomic_inc(&dev_priv->irq_received); | |
1036 | ||
7e231dbe JB |
1037 | while (true) { |
1038 | iir = I915_READ(VLV_IIR); | |
1039 | gt_iir = I915_READ(GTIIR); | |
1040 | pm_iir = I915_READ(GEN6_PMIIR); | |
1041 | ||
1042 | if (gt_iir == 0 && pm_iir == 0 && iir == 0) | |
1043 | goto out; | |
1044 | ||
1045 | ret = IRQ_HANDLED; | |
1046 | ||
e7b4c6b1 | 1047 | snb_gt_irq_handler(dev, dev_priv, gt_iir); |
7e231dbe JB |
1048 | |
1049 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
1050 | for_each_pipe(pipe) { | |
1051 | int reg = PIPESTAT(pipe); | |
1052 | pipe_stats[pipe] = I915_READ(reg); | |
1053 | ||
1054 | /* | |
1055 | * Clear the PIPE*STAT regs before the IIR | |
1056 | */ | |
1057 | if (pipe_stats[pipe] & 0x8000ffff) { | |
1058 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) | |
1059 | DRM_DEBUG_DRIVER("pipe %c underrun\n", | |
1060 | pipe_name(pipe)); | |
1061 | I915_WRITE(reg, pipe_stats[pipe]); | |
1062 | } | |
1063 | } | |
1064 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
1065 | ||
31acc7f5 JB |
1066 | for_each_pipe(pipe) { |
1067 | if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS) | |
1068 | drm_handle_vblank(dev, pipe); | |
1069 | ||
1070 | if (pipe_stats[pipe] & PLANE_FLIPDONE_INT_STATUS_VLV) { | |
1071 | intel_prepare_page_flip(dev, pipe); | |
1072 | intel_finish_page_flip(dev, pipe); | |
1073 | } | |
1074 | } | |
1075 | ||
7e231dbe JB |
1076 | /* Consume port. Then clear IIR or we'll miss events */ |
1077 | if (iir & I915_DISPLAY_PORT_INTERRUPT) { | |
1078 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); | |
b543fb04 | 1079 | u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_I915; |
7e231dbe JB |
1080 | |
1081 | DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", | |
1082 | hotplug_status); | |
91d131d2 DV |
1083 | |
1084 | intel_hpd_irq_handler(dev, hotplug_trigger, hpd_status_i915); | |
1085 | ||
7e231dbe JB |
1086 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); |
1087 | I915_READ(PORT_HOTPLUG_STAT); | |
1088 | } | |
1089 | ||
515ac2bb DV |
1090 | if (pipe_stats[0] & PIPE_GMBUS_INTERRUPT_STATUS) |
1091 | gmbus_irq_handler(dev); | |
7e231dbe | 1092 | |
4848405c | 1093 | if (pm_iir & GEN6_PM_RPS_EVENTS) |
d0ecd7e2 | 1094 | gen6_rps_irq_handler(dev_priv, pm_iir); |
7e231dbe JB |
1095 | |
1096 | I915_WRITE(GTIIR, gt_iir); | |
1097 | I915_WRITE(GEN6_PMIIR, pm_iir); | |
1098 | I915_WRITE(VLV_IIR, iir); | |
1099 | } | |
1100 | ||
1101 | out: | |
1102 | return ret; | |
1103 | } | |
1104 | ||
23e81d69 | 1105 | static void ibx_irq_handler(struct drm_device *dev, u32 pch_iir) |
776ad806 JB |
1106 | { |
1107 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
9db4a9c7 | 1108 | int pipe; |
b543fb04 | 1109 | u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK; |
776ad806 | 1110 | |
91d131d2 DV |
1111 | intel_hpd_irq_handler(dev, hotplug_trigger, hpd_ibx); |
1112 | ||
cfc33bf7 VS |
1113 | if (pch_iir & SDE_AUDIO_POWER_MASK) { |
1114 | int port = ffs((pch_iir & SDE_AUDIO_POWER_MASK) >> | |
1115 | SDE_AUDIO_POWER_SHIFT); | |
776ad806 | 1116 | DRM_DEBUG_DRIVER("PCH audio power change on port %d\n", |
cfc33bf7 VS |
1117 | port_name(port)); |
1118 | } | |
776ad806 | 1119 | |
ce99c256 DV |
1120 | if (pch_iir & SDE_AUX_MASK) |
1121 | dp_aux_irq_handler(dev); | |
1122 | ||
776ad806 | 1123 | if (pch_iir & SDE_GMBUS) |
515ac2bb | 1124 | gmbus_irq_handler(dev); |
776ad806 JB |
1125 | |
1126 | if (pch_iir & SDE_AUDIO_HDCP_MASK) | |
1127 | DRM_DEBUG_DRIVER("PCH HDCP audio interrupt\n"); | |
1128 | ||
1129 | if (pch_iir & SDE_AUDIO_TRANS_MASK) | |
1130 | DRM_DEBUG_DRIVER("PCH transcoder audio interrupt\n"); | |
1131 | ||
1132 | if (pch_iir & SDE_POISON) | |
1133 | DRM_ERROR("PCH poison interrupt\n"); | |
1134 | ||
9db4a9c7 JB |
1135 | if (pch_iir & SDE_FDI_MASK) |
1136 | for_each_pipe(pipe) | |
1137 | DRM_DEBUG_DRIVER(" pipe %c FDI IIR: 0x%08x\n", | |
1138 | pipe_name(pipe), | |
1139 | I915_READ(FDI_RX_IIR(pipe))); | |
776ad806 JB |
1140 | |
1141 | if (pch_iir & (SDE_TRANSB_CRC_DONE | SDE_TRANSA_CRC_DONE)) | |
1142 | DRM_DEBUG_DRIVER("PCH transcoder CRC done interrupt\n"); | |
1143 | ||
1144 | if (pch_iir & (SDE_TRANSB_CRC_ERR | SDE_TRANSA_CRC_ERR)) | |
1145 | DRM_DEBUG_DRIVER("PCH transcoder CRC error interrupt\n"); | |
1146 | ||
776ad806 | 1147 | if (pch_iir & SDE_TRANSA_FIFO_UNDER) |
8664281b PZ |
1148 | if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_A, |
1149 | false)) | |
1150 | DRM_DEBUG_DRIVER("PCH transcoder A FIFO underrun\n"); | |
1151 | ||
1152 | if (pch_iir & SDE_TRANSB_FIFO_UNDER) | |
1153 | if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_B, | |
1154 | false)) | |
1155 | DRM_DEBUG_DRIVER("PCH transcoder B FIFO underrun\n"); | |
1156 | } | |
1157 | ||
1158 | static void ivb_err_int_handler(struct drm_device *dev) | |
1159 | { | |
1160 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1161 | u32 err_int = I915_READ(GEN7_ERR_INT); | |
1162 | ||
de032bf4 PZ |
1163 | if (err_int & ERR_INT_POISON) |
1164 | DRM_ERROR("Poison interrupt\n"); | |
1165 | ||
8664281b PZ |
1166 | if (err_int & ERR_INT_FIFO_UNDERRUN_A) |
1167 | if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_A, false)) | |
1168 | DRM_DEBUG_DRIVER("Pipe A FIFO underrun\n"); | |
1169 | ||
1170 | if (err_int & ERR_INT_FIFO_UNDERRUN_B) | |
1171 | if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_B, false)) | |
1172 | DRM_DEBUG_DRIVER("Pipe B FIFO underrun\n"); | |
1173 | ||
1174 | if (err_int & ERR_INT_FIFO_UNDERRUN_C) | |
1175 | if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_C, false)) | |
1176 | DRM_DEBUG_DRIVER("Pipe C FIFO underrun\n"); | |
1177 | ||
1178 | I915_WRITE(GEN7_ERR_INT, err_int); | |
1179 | } | |
1180 | ||
1181 | static void cpt_serr_int_handler(struct drm_device *dev) | |
1182 | { | |
1183 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1184 | u32 serr_int = I915_READ(SERR_INT); | |
1185 | ||
de032bf4 PZ |
1186 | if (serr_int & SERR_INT_POISON) |
1187 | DRM_ERROR("PCH poison interrupt\n"); | |
1188 | ||
8664281b PZ |
1189 | if (serr_int & SERR_INT_TRANS_A_FIFO_UNDERRUN) |
1190 | if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_A, | |
1191 | false)) | |
1192 | DRM_DEBUG_DRIVER("PCH transcoder A FIFO underrun\n"); | |
1193 | ||
1194 | if (serr_int & SERR_INT_TRANS_B_FIFO_UNDERRUN) | |
1195 | if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_B, | |
1196 | false)) | |
1197 | DRM_DEBUG_DRIVER("PCH transcoder B FIFO underrun\n"); | |
1198 | ||
1199 | if (serr_int & SERR_INT_TRANS_C_FIFO_UNDERRUN) | |
1200 | if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_C, | |
1201 | false)) | |
1202 | DRM_DEBUG_DRIVER("PCH transcoder C FIFO underrun\n"); | |
1203 | ||
1204 | I915_WRITE(SERR_INT, serr_int); | |
776ad806 JB |
1205 | } |
1206 | ||
23e81d69 AJ |
1207 | static void cpt_irq_handler(struct drm_device *dev, u32 pch_iir) |
1208 | { | |
1209 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1210 | int pipe; | |
b543fb04 | 1211 | u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK_CPT; |
23e81d69 | 1212 | |
91d131d2 DV |
1213 | intel_hpd_irq_handler(dev, hotplug_trigger, hpd_cpt); |
1214 | ||
cfc33bf7 VS |
1215 | if (pch_iir & SDE_AUDIO_POWER_MASK_CPT) { |
1216 | int port = ffs((pch_iir & SDE_AUDIO_POWER_MASK_CPT) >> | |
1217 | SDE_AUDIO_POWER_SHIFT_CPT); | |
1218 | DRM_DEBUG_DRIVER("PCH audio power change on port %c\n", | |
1219 | port_name(port)); | |
1220 | } | |
23e81d69 AJ |
1221 | |
1222 | if (pch_iir & SDE_AUX_MASK_CPT) | |
ce99c256 | 1223 | dp_aux_irq_handler(dev); |
23e81d69 AJ |
1224 | |
1225 | if (pch_iir & SDE_GMBUS_CPT) | |
515ac2bb | 1226 | gmbus_irq_handler(dev); |
23e81d69 AJ |
1227 | |
1228 | if (pch_iir & SDE_AUDIO_CP_REQ_CPT) | |
1229 | DRM_DEBUG_DRIVER("Audio CP request interrupt\n"); | |
1230 | ||
1231 | if (pch_iir & SDE_AUDIO_CP_CHG_CPT) | |
1232 | DRM_DEBUG_DRIVER("Audio CP change interrupt\n"); | |
1233 | ||
1234 | if (pch_iir & SDE_FDI_MASK_CPT) | |
1235 | for_each_pipe(pipe) | |
1236 | DRM_DEBUG_DRIVER(" pipe %c FDI IIR: 0x%08x\n", | |
1237 | pipe_name(pipe), | |
1238 | I915_READ(FDI_RX_IIR(pipe))); | |
8664281b PZ |
1239 | |
1240 | if (pch_iir & SDE_ERROR_CPT) | |
1241 | cpt_serr_int_handler(dev); | |
23e81d69 AJ |
1242 | } |
1243 | ||
c008bc6e PZ |
1244 | static void ilk_display_irq_handler(struct drm_device *dev, u32 de_iir) |
1245 | { | |
1246 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1247 | ||
1248 | if (de_iir & DE_AUX_CHANNEL_A) | |
1249 | dp_aux_irq_handler(dev); | |
1250 | ||
1251 | if (de_iir & DE_GSE) | |
1252 | intel_opregion_asle_intr(dev); | |
1253 | ||
1254 | if (de_iir & DE_PIPEA_VBLANK) | |
1255 | drm_handle_vblank(dev, 0); | |
1256 | ||
1257 | if (de_iir & DE_PIPEB_VBLANK) | |
1258 | drm_handle_vblank(dev, 1); | |
1259 | ||
1260 | if (de_iir & DE_POISON) | |
1261 | DRM_ERROR("Poison interrupt\n"); | |
1262 | ||
1263 | if (de_iir & DE_PIPEA_FIFO_UNDERRUN) | |
1264 | if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_A, false)) | |
1265 | DRM_DEBUG_DRIVER("Pipe A FIFO underrun\n"); | |
1266 | ||
1267 | if (de_iir & DE_PIPEB_FIFO_UNDERRUN) | |
1268 | if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_B, false)) | |
1269 | DRM_DEBUG_DRIVER("Pipe B FIFO underrun\n"); | |
1270 | ||
1271 | if (de_iir & DE_PLANEA_FLIP_DONE) { | |
1272 | intel_prepare_page_flip(dev, 0); | |
1273 | intel_finish_page_flip_plane(dev, 0); | |
1274 | } | |
1275 | ||
1276 | if (de_iir & DE_PLANEB_FLIP_DONE) { | |
1277 | intel_prepare_page_flip(dev, 1); | |
1278 | intel_finish_page_flip_plane(dev, 1); | |
1279 | } | |
1280 | ||
1281 | /* check event from PCH */ | |
1282 | if (de_iir & DE_PCH_EVENT) { | |
1283 | u32 pch_iir = I915_READ(SDEIIR); | |
1284 | ||
1285 | if (HAS_PCH_CPT(dev)) | |
1286 | cpt_irq_handler(dev, pch_iir); | |
1287 | else | |
1288 | ibx_irq_handler(dev, pch_iir); | |
1289 | ||
1290 | /* should clear PCH hotplug event before clear CPU irq */ | |
1291 | I915_WRITE(SDEIIR, pch_iir); | |
1292 | } | |
1293 | ||
1294 | if (IS_GEN5(dev) && de_iir & DE_PCU_EVENT) | |
1295 | ironlake_rps_change_irq_handler(dev); | |
1296 | } | |
1297 | ||
9719fb98 PZ |
1298 | static void ivb_display_irq_handler(struct drm_device *dev, u32 de_iir) |
1299 | { | |
1300 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1301 | int i; | |
1302 | ||
1303 | if (de_iir & DE_ERR_INT_IVB) | |
1304 | ivb_err_int_handler(dev); | |
1305 | ||
1306 | if (de_iir & DE_AUX_CHANNEL_A_IVB) | |
1307 | dp_aux_irq_handler(dev); | |
1308 | ||
1309 | if (de_iir & DE_GSE_IVB) | |
1310 | intel_opregion_asle_intr(dev); | |
1311 | ||
1312 | for (i = 0; i < 3; i++) { | |
1313 | if (de_iir & (DE_PIPEA_VBLANK_IVB << (5 * i))) | |
1314 | drm_handle_vblank(dev, i); | |
1315 | if (de_iir & (DE_PLANEA_FLIP_DONE_IVB << (5 * i))) { | |
1316 | intel_prepare_page_flip(dev, i); | |
1317 | intel_finish_page_flip_plane(dev, i); | |
1318 | } | |
1319 | } | |
1320 | ||
1321 | /* check event from PCH */ | |
1322 | if (!HAS_PCH_NOP(dev) && (de_iir & DE_PCH_EVENT_IVB)) { | |
1323 | u32 pch_iir = I915_READ(SDEIIR); | |
1324 | ||
1325 | cpt_irq_handler(dev, pch_iir); | |
1326 | ||
1327 | /* clear PCH hotplug event before clear CPU irq */ | |
1328 | I915_WRITE(SDEIIR, pch_iir); | |
1329 | } | |
1330 | } | |
1331 | ||
f1af8fc1 | 1332 | static irqreturn_t ironlake_irq_handler(int irq, void *arg) |
b1f14ad0 JB |
1333 | { |
1334 | struct drm_device *dev = (struct drm_device *) arg; | |
1335 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
f1af8fc1 | 1336 | u32 de_iir, gt_iir, de_ier, sde_ier = 0; |
0e43406b | 1337 | irqreturn_t ret = IRQ_NONE; |
b1f14ad0 JB |
1338 | |
1339 | atomic_inc(&dev_priv->irq_received); | |
1340 | ||
8664281b PZ |
1341 | /* We get interrupts on unclaimed registers, so check for this before we |
1342 | * do any I915_{READ,WRITE}. */ | |
907b28c5 | 1343 | intel_uncore_check_errors(dev); |
8664281b | 1344 | |
b1f14ad0 JB |
1345 | /* disable master interrupt before clearing iir */ |
1346 | de_ier = I915_READ(DEIER); | |
1347 | I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL); | |
23a78516 | 1348 | POSTING_READ(DEIER); |
b1f14ad0 | 1349 | |
44498aea PZ |
1350 | /* Disable south interrupts. We'll only write to SDEIIR once, so further |
1351 | * interrupts will will be stored on its back queue, and then we'll be | |
1352 | * able to process them after we restore SDEIER (as soon as we restore | |
1353 | * it, we'll get an interrupt if SDEIIR still has something to process | |
1354 | * due to its back queue). */ | |
ab5c608b BW |
1355 | if (!HAS_PCH_NOP(dev)) { |
1356 | sde_ier = I915_READ(SDEIER); | |
1357 | I915_WRITE(SDEIER, 0); | |
1358 | POSTING_READ(SDEIER); | |
1359 | } | |
44498aea | 1360 | |
8664281b PZ |
1361 | /* On Haswell, also mask ERR_INT because we don't want to risk |
1362 | * generating "unclaimed register" interrupts from inside the interrupt | |
1363 | * handler. */ | |
4bc9d430 DV |
1364 | if (IS_HASWELL(dev)) { |
1365 | spin_lock(&dev_priv->irq_lock); | |
8664281b | 1366 | ironlake_disable_display_irq(dev_priv, DE_ERR_INT_IVB); |
4bc9d430 DV |
1367 | spin_unlock(&dev_priv->irq_lock); |
1368 | } | |
8664281b | 1369 | |
b1f14ad0 | 1370 | gt_iir = I915_READ(GTIIR); |
0e43406b | 1371 | if (gt_iir) { |
d8fc8a47 | 1372 | if (INTEL_INFO(dev)->gen >= 6) |
f1af8fc1 | 1373 | snb_gt_irq_handler(dev, dev_priv, gt_iir); |
d8fc8a47 PZ |
1374 | else |
1375 | ilk_gt_irq_handler(dev, dev_priv, gt_iir); | |
0e43406b CW |
1376 | I915_WRITE(GTIIR, gt_iir); |
1377 | ret = IRQ_HANDLED; | |
b1f14ad0 JB |
1378 | } |
1379 | ||
0e43406b CW |
1380 | de_iir = I915_READ(DEIIR); |
1381 | if (de_iir) { | |
f1af8fc1 PZ |
1382 | if (INTEL_INFO(dev)->gen >= 7) |
1383 | ivb_display_irq_handler(dev, de_iir); | |
1384 | else | |
1385 | ilk_display_irq_handler(dev, de_iir); | |
0e43406b CW |
1386 | I915_WRITE(DEIIR, de_iir); |
1387 | ret = IRQ_HANDLED; | |
b1f14ad0 JB |
1388 | } |
1389 | ||
f1af8fc1 PZ |
1390 | if (INTEL_INFO(dev)->gen >= 6) { |
1391 | u32 pm_iir = I915_READ(GEN6_PMIIR); | |
1392 | if (pm_iir) { | |
1393 | if (IS_HASWELL(dev)) | |
1394 | hsw_pm_irq_handler(dev_priv, pm_iir); | |
1395 | else if (pm_iir & GEN6_PM_RPS_EVENTS) | |
1396 | gen6_rps_irq_handler(dev_priv, pm_iir); | |
1397 | I915_WRITE(GEN6_PMIIR, pm_iir); | |
1398 | ret = IRQ_HANDLED; | |
1399 | } | |
0e43406b | 1400 | } |
b1f14ad0 | 1401 | |
4bc9d430 DV |
1402 | if (IS_HASWELL(dev)) { |
1403 | spin_lock(&dev_priv->irq_lock); | |
1404 | if (ivb_can_enable_err_int(dev)) | |
1405 | ironlake_enable_display_irq(dev_priv, DE_ERR_INT_IVB); | |
1406 | spin_unlock(&dev_priv->irq_lock); | |
1407 | } | |
8664281b | 1408 | |
b1f14ad0 JB |
1409 | I915_WRITE(DEIER, de_ier); |
1410 | POSTING_READ(DEIER); | |
ab5c608b BW |
1411 | if (!HAS_PCH_NOP(dev)) { |
1412 | I915_WRITE(SDEIER, sde_ier); | |
1413 | POSTING_READ(SDEIER); | |
1414 | } | |
b1f14ad0 JB |
1415 | |
1416 | return ret; | |
1417 | } | |
1418 | ||
8a905236 JB |
1419 | /** |
1420 | * i915_error_work_func - do process context error handling work | |
1421 | * @work: work struct | |
1422 | * | |
1423 | * Fire an error uevent so userspace can see that a hang or error | |
1424 | * was detected. | |
1425 | */ | |
1426 | static void i915_error_work_func(struct work_struct *work) | |
1427 | { | |
1f83fee0 DV |
1428 | struct i915_gpu_error *error = container_of(work, struct i915_gpu_error, |
1429 | work); | |
1430 | drm_i915_private_t *dev_priv = container_of(error, drm_i915_private_t, | |
1431 | gpu_error); | |
8a905236 | 1432 | struct drm_device *dev = dev_priv->dev; |
f69061be | 1433 | struct intel_ring_buffer *ring; |
cce723ed BW |
1434 | char *error_event[] = { I915_ERROR_UEVENT "=1", NULL }; |
1435 | char *reset_event[] = { I915_RESET_UEVENT "=1", NULL }; | |
1436 | char *reset_done_event[] = { I915_ERROR_UEVENT "=0", NULL }; | |
f69061be | 1437 | int i, ret; |
8a905236 | 1438 | |
f316a42c BG |
1439 | kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, error_event); |
1440 | ||
7db0ba24 DV |
1441 | /* |
1442 | * Note that there's only one work item which does gpu resets, so we | |
1443 | * need not worry about concurrent gpu resets potentially incrementing | |
1444 | * error->reset_counter twice. We only need to take care of another | |
1445 | * racing irq/hangcheck declaring the gpu dead for a second time. A | |
1446 | * quick check for that is good enough: schedule_work ensures the | |
1447 | * correct ordering between hang detection and this work item, and since | |
1448 | * the reset in-progress bit is only ever set by code outside of this | |
1449 | * work we don't need to worry about any other races. | |
1450 | */ | |
1451 | if (i915_reset_in_progress(error) && !i915_terminally_wedged(error)) { | |
f803aa55 | 1452 | DRM_DEBUG_DRIVER("resetting chip\n"); |
7db0ba24 DV |
1453 | kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, |
1454 | reset_event); | |
1f83fee0 | 1455 | |
f69061be DV |
1456 | ret = i915_reset(dev); |
1457 | ||
1458 | if (ret == 0) { | |
1459 | /* | |
1460 | * After all the gem state is reset, increment the reset | |
1461 | * counter and wake up everyone waiting for the reset to | |
1462 | * complete. | |
1463 | * | |
1464 | * Since unlock operations are a one-sided barrier only, | |
1465 | * we need to insert a barrier here to order any seqno | |
1466 | * updates before | |
1467 | * the counter increment. | |
1468 | */ | |
1469 | smp_mb__before_atomic_inc(); | |
1470 | atomic_inc(&dev_priv->gpu_error.reset_counter); | |
1471 | ||
1472 | kobject_uevent_env(&dev->primary->kdev.kobj, | |
1473 | KOBJ_CHANGE, reset_done_event); | |
1f83fee0 DV |
1474 | } else { |
1475 | atomic_set(&error->reset_counter, I915_WEDGED); | |
f316a42c | 1476 | } |
1f83fee0 | 1477 | |
f69061be DV |
1478 | for_each_ring(ring, dev_priv, i) |
1479 | wake_up_all(&ring->irq_queue); | |
1480 | ||
96a02917 VS |
1481 | intel_display_handle_reset(dev); |
1482 | ||
1f83fee0 | 1483 | wake_up_all(&dev_priv->gpu_error.reset_queue); |
f316a42c | 1484 | } |
8a905236 JB |
1485 | } |
1486 | ||
35aed2e6 | 1487 | static void i915_report_and_clear_eir(struct drm_device *dev) |
8a905236 JB |
1488 | { |
1489 | struct drm_i915_private *dev_priv = dev->dev_private; | |
bd9854f9 | 1490 | uint32_t instdone[I915_NUM_INSTDONE_REG]; |
8a905236 | 1491 | u32 eir = I915_READ(EIR); |
050ee91f | 1492 | int pipe, i; |
8a905236 | 1493 | |
35aed2e6 CW |
1494 | if (!eir) |
1495 | return; | |
8a905236 | 1496 | |
a70491cc | 1497 | pr_err("render error detected, EIR: 0x%08x\n", eir); |
8a905236 | 1498 | |
bd9854f9 BW |
1499 | i915_get_extra_instdone(dev, instdone); |
1500 | ||
8a905236 JB |
1501 | if (IS_G4X(dev)) { |
1502 | if (eir & (GM45_ERROR_MEM_PRIV | GM45_ERROR_CP_PRIV)) { | |
1503 | u32 ipeir = I915_READ(IPEIR_I965); | |
1504 | ||
a70491cc JP |
1505 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR_I965)); |
1506 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR_I965)); | |
050ee91f BW |
1507 | for (i = 0; i < ARRAY_SIZE(instdone); i++) |
1508 | pr_err(" INSTDONE_%d: 0x%08x\n", i, instdone[i]); | |
a70491cc | 1509 | pr_err(" INSTPS: 0x%08x\n", I915_READ(INSTPS)); |
a70491cc | 1510 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD_I965)); |
8a905236 | 1511 | I915_WRITE(IPEIR_I965, ipeir); |
3143a2bf | 1512 | POSTING_READ(IPEIR_I965); |
8a905236 JB |
1513 | } |
1514 | if (eir & GM45_ERROR_PAGE_TABLE) { | |
1515 | u32 pgtbl_err = I915_READ(PGTBL_ER); | |
a70491cc JP |
1516 | pr_err("page table error\n"); |
1517 | pr_err(" PGTBL_ER: 0x%08x\n", pgtbl_err); | |
8a905236 | 1518 | I915_WRITE(PGTBL_ER, pgtbl_err); |
3143a2bf | 1519 | POSTING_READ(PGTBL_ER); |
8a905236 JB |
1520 | } |
1521 | } | |
1522 | ||
a6c45cf0 | 1523 | if (!IS_GEN2(dev)) { |
8a905236 JB |
1524 | if (eir & I915_ERROR_PAGE_TABLE) { |
1525 | u32 pgtbl_err = I915_READ(PGTBL_ER); | |
a70491cc JP |
1526 | pr_err("page table error\n"); |
1527 | pr_err(" PGTBL_ER: 0x%08x\n", pgtbl_err); | |
8a905236 | 1528 | I915_WRITE(PGTBL_ER, pgtbl_err); |
3143a2bf | 1529 | POSTING_READ(PGTBL_ER); |
8a905236 JB |
1530 | } |
1531 | } | |
1532 | ||
1533 | if (eir & I915_ERROR_MEMORY_REFRESH) { | |
a70491cc | 1534 | pr_err("memory refresh error:\n"); |
9db4a9c7 | 1535 | for_each_pipe(pipe) |
a70491cc | 1536 | pr_err("pipe %c stat: 0x%08x\n", |
9db4a9c7 | 1537 | pipe_name(pipe), I915_READ(PIPESTAT(pipe))); |
8a905236 JB |
1538 | /* pipestat has already been acked */ |
1539 | } | |
1540 | if (eir & I915_ERROR_INSTRUCTION) { | |
a70491cc JP |
1541 | pr_err("instruction error\n"); |
1542 | pr_err(" INSTPM: 0x%08x\n", I915_READ(INSTPM)); | |
050ee91f BW |
1543 | for (i = 0; i < ARRAY_SIZE(instdone); i++) |
1544 | pr_err(" INSTDONE_%d: 0x%08x\n", i, instdone[i]); | |
a6c45cf0 | 1545 | if (INTEL_INFO(dev)->gen < 4) { |
8a905236 JB |
1546 | u32 ipeir = I915_READ(IPEIR); |
1547 | ||
a70491cc JP |
1548 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR)); |
1549 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR)); | |
a70491cc | 1550 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD)); |
8a905236 | 1551 | I915_WRITE(IPEIR, ipeir); |
3143a2bf | 1552 | POSTING_READ(IPEIR); |
8a905236 JB |
1553 | } else { |
1554 | u32 ipeir = I915_READ(IPEIR_I965); | |
1555 | ||
a70491cc JP |
1556 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR_I965)); |
1557 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR_I965)); | |
a70491cc | 1558 | pr_err(" INSTPS: 0x%08x\n", I915_READ(INSTPS)); |
a70491cc | 1559 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD_I965)); |
8a905236 | 1560 | I915_WRITE(IPEIR_I965, ipeir); |
3143a2bf | 1561 | POSTING_READ(IPEIR_I965); |
8a905236 JB |
1562 | } |
1563 | } | |
1564 | ||
1565 | I915_WRITE(EIR, eir); | |
3143a2bf | 1566 | POSTING_READ(EIR); |
8a905236 JB |
1567 | eir = I915_READ(EIR); |
1568 | if (eir) { | |
1569 | /* | |
1570 | * some errors might have become stuck, | |
1571 | * mask them. | |
1572 | */ | |
1573 | DRM_ERROR("EIR stuck: 0x%08x, masking\n", eir); | |
1574 | I915_WRITE(EMR, I915_READ(EMR) | eir); | |
1575 | I915_WRITE(IIR, I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
1576 | } | |
35aed2e6 CW |
1577 | } |
1578 | ||
1579 | /** | |
1580 | * i915_handle_error - handle an error interrupt | |
1581 | * @dev: drm device | |
1582 | * | |
1583 | * Do some basic checking of regsiter state at error interrupt time and | |
1584 | * dump it to the syslog. Also call i915_capture_error_state() to make | |
1585 | * sure we get a record and make it available in debugfs. Fire a uevent | |
1586 | * so userspace knows something bad happened (should trigger collection | |
1587 | * of a ring dump etc.). | |
1588 | */ | |
527f9e90 | 1589 | void i915_handle_error(struct drm_device *dev, bool wedged) |
35aed2e6 CW |
1590 | { |
1591 | struct drm_i915_private *dev_priv = dev->dev_private; | |
b4519513 CW |
1592 | struct intel_ring_buffer *ring; |
1593 | int i; | |
35aed2e6 CW |
1594 | |
1595 | i915_capture_error_state(dev); | |
1596 | i915_report_and_clear_eir(dev); | |
8a905236 | 1597 | |
ba1234d1 | 1598 | if (wedged) { |
f69061be DV |
1599 | atomic_set_mask(I915_RESET_IN_PROGRESS_FLAG, |
1600 | &dev_priv->gpu_error.reset_counter); | |
ba1234d1 | 1601 | |
11ed50ec | 1602 | /* |
1f83fee0 DV |
1603 | * Wakeup waiting processes so that the reset work item |
1604 | * doesn't deadlock trying to grab various locks. | |
11ed50ec | 1605 | */ |
b4519513 CW |
1606 | for_each_ring(ring, dev_priv, i) |
1607 | wake_up_all(&ring->irq_queue); | |
11ed50ec BG |
1608 | } |
1609 | ||
99584db3 | 1610 | queue_work(dev_priv->wq, &dev_priv->gpu_error.work); |
8a905236 JB |
1611 | } |
1612 | ||
21ad8330 | 1613 | static void __always_unused i915_pageflip_stall_check(struct drm_device *dev, int pipe) |
4e5359cd SF |
1614 | { |
1615 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1616 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
1617 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
05394f39 | 1618 | struct drm_i915_gem_object *obj; |
4e5359cd SF |
1619 | struct intel_unpin_work *work; |
1620 | unsigned long flags; | |
1621 | bool stall_detected; | |
1622 | ||
1623 | /* Ignore early vblank irqs */ | |
1624 | if (intel_crtc == NULL) | |
1625 | return; | |
1626 | ||
1627 | spin_lock_irqsave(&dev->event_lock, flags); | |
1628 | work = intel_crtc->unpin_work; | |
1629 | ||
e7d841ca CW |
1630 | if (work == NULL || |
1631 | atomic_read(&work->pending) >= INTEL_FLIP_COMPLETE || | |
1632 | !work->enable_stall_check) { | |
4e5359cd SF |
1633 | /* Either the pending flip IRQ arrived, or we're too early. Don't check */ |
1634 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
1635 | return; | |
1636 | } | |
1637 | ||
1638 | /* Potential stall - if we see that the flip has happened, assume a missed interrupt */ | |
05394f39 | 1639 | obj = work->pending_flip_obj; |
a6c45cf0 | 1640 | if (INTEL_INFO(dev)->gen >= 4) { |
9db4a9c7 | 1641 | int dspsurf = DSPSURF(intel_crtc->plane); |
446f2545 | 1642 | stall_detected = I915_HI_DISPBASE(I915_READ(dspsurf)) == |
f343c5f6 | 1643 | i915_gem_obj_ggtt_offset(obj); |
4e5359cd | 1644 | } else { |
9db4a9c7 | 1645 | int dspaddr = DSPADDR(intel_crtc->plane); |
f343c5f6 | 1646 | stall_detected = I915_READ(dspaddr) == (i915_gem_obj_ggtt_offset(obj) + |
01f2c773 | 1647 | crtc->y * crtc->fb->pitches[0] + |
4e5359cd SF |
1648 | crtc->x * crtc->fb->bits_per_pixel/8); |
1649 | } | |
1650 | ||
1651 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
1652 | ||
1653 | if (stall_detected) { | |
1654 | DRM_DEBUG_DRIVER("Pageflip stall detected\n"); | |
1655 | intel_prepare_page_flip(dev, intel_crtc->plane); | |
1656 | } | |
1657 | } | |
1658 | ||
42f52ef8 KP |
1659 | /* Called from drm generic code, passed 'crtc' which |
1660 | * we use as a pipe index | |
1661 | */ | |
f71d4af4 | 1662 | static int i915_enable_vblank(struct drm_device *dev, int pipe) |
0a3e67a4 JB |
1663 | { |
1664 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
e9d21d7f | 1665 | unsigned long irqflags; |
71e0ffa5 | 1666 | |
5eddb70b | 1667 | if (!i915_pipe_enabled(dev, pipe)) |
71e0ffa5 | 1668 | return -EINVAL; |
0a3e67a4 | 1669 | |
1ec14ad3 | 1670 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
f796cf8f | 1671 | if (INTEL_INFO(dev)->gen >= 4) |
7c463586 KP |
1672 | i915_enable_pipestat(dev_priv, pipe, |
1673 | PIPE_START_VBLANK_INTERRUPT_ENABLE); | |
e9d21d7f | 1674 | else |
7c463586 KP |
1675 | i915_enable_pipestat(dev_priv, pipe, |
1676 | PIPE_VBLANK_INTERRUPT_ENABLE); | |
8692d00e CW |
1677 | |
1678 | /* maintain vblank delivery even in deep C-states */ | |
1679 | if (dev_priv->info->gen == 3) | |
6b26c86d | 1680 | I915_WRITE(INSTPM, _MASKED_BIT_DISABLE(INSTPM_AGPBUSY_DIS)); |
1ec14ad3 | 1681 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
8692d00e | 1682 | |
0a3e67a4 JB |
1683 | return 0; |
1684 | } | |
1685 | ||
f71d4af4 | 1686 | static int ironlake_enable_vblank(struct drm_device *dev, int pipe) |
f796cf8f JB |
1687 | { |
1688 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1689 | unsigned long irqflags; | |
b518421f PZ |
1690 | uint32_t bit = (INTEL_INFO(dev)->gen >= 7) ? DE_PIPE_VBLANK_IVB(pipe) : |
1691 | DE_PIPE_VBLANK_ILK(pipe); | |
f796cf8f JB |
1692 | |
1693 | if (!i915_pipe_enabled(dev, pipe)) | |
1694 | return -EINVAL; | |
1695 | ||
1696 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
b518421f | 1697 | ironlake_enable_display_irq(dev_priv, bit); |
b1f14ad0 JB |
1698 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
1699 | ||
1700 | return 0; | |
1701 | } | |
1702 | ||
7e231dbe JB |
1703 | static int valleyview_enable_vblank(struct drm_device *dev, int pipe) |
1704 | { | |
1705 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1706 | unsigned long irqflags; | |
31acc7f5 | 1707 | u32 imr; |
7e231dbe JB |
1708 | |
1709 | if (!i915_pipe_enabled(dev, pipe)) | |
1710 | return -EINVAL; | |
1711 | ||
1712 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
7e231dbe | 1713 | imr = I915_READ(VLV_IMR); |
31acc7f5 | 1714 | if (pipe == 0) |
7e231dbe | 1715 | imr &= ~I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT; |
31acc7f5 | 1716 | else |
7e231dbe | 1717 | imr &= ~I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; |
7e231dbe | 1718 | I915_WRITE(VLV_IMR, imr); |
31acc7f5 JB |
1719 | i915_enable_pipestat(dev_priv, pipe, |
1720 | PIPE_START_VBLANK_INTERRUPT_ENABLE); | |
7e231dbe JB |
1721 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
1722 | ||
1723 | return 0; | |
1724 | } | |
1725 | ||
42f52ef8 KP |
1726 | /* Called from drm generic code, passed 'crtc' which |
1727 | * we use as a pipe index | |
1728 | */ | |
f71d4af4 | 1729 | static void i915_disable_vblank(struct drm_device *dev, int pipe) |
0a3e67a4 JB |
1730 | { |
1731 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
e9d21d7f | 1732 | unsigned long irqflags; |
0a3e67a4 | 1733 | |
1ec14ad3 | 1734 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
8692d00e | 1735 | if (dev_priv->info->gen == 3) |
6b26c86d | 1736 | I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_AGPBUSY_DIS)); |
8692d00e | 1737 | |
f796cf8f JB |
1738 | i915_disable_pipestat(dev_priv, pipe, |
1739 | PIPE_VBLANK_INTERRUPT_ENABLE | | |
1740 | PIPE_START_VBLANK_INTERRUPT_ENABLE); | |
1741 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
1742 | } | |
1743 | ||
f71d4af4 | 1744 | static void ironlake_disable_vblank(struct drm_device *dev, int pipe) |
f796cf8f JB |
1745 | { |
1746 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1747 | unsigned long irqflags; | |
b518421f PZ |
1748 | uint32_t bit = (INTEL_INFO(dev)->gen >= 7) ? DE_PIPE_VBLANK_IVB(pipe) : |
1749 | DE_PIPE_VBLANK_ILK(pipe); | |
f796cf8f JB |
1750 | |
1751 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
b518421f | 1752 | ironlake_disable_display_irq(dev_priv, bit); |
b1f14ad0 JB |
1753 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
1754 | } | |
1755 | ||
7e231dbe JB |
1756 | static void valleyview_disable_vblank(struct drm_device *dev, int pipe) |
1757 | { | |
1758 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1759 | unsigned long irqflags; | |
31acc7f5 | 1760 | u32 imr; |
7e231dbe JB |
1761 | |
1762 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
31acc7f5 JB |
1763 | i915_disable_pipestat(dev_priv, pipe, |
1764 | PIPE_START_VBLANK_INTERRUPT_ENABLE); | |
7e231dbe | 1765 | imr = I915_READ(VLV_IMR); |
31acc7f5 | 1766 | if (pipe == 0) |
7e231dbe | 1767 | imr |= I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT; |
31acc7f5 | 1768 | else |
7e231dbe | 1769 | imr |= I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; |
7e231dbe | 1770 | I915_WRITE(VLV_IMR, imr); |
7e231dbe JB |
1771 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
1772 | } | |
1773 | ||
893eead0 CW |
1774 | static u32 |
1775 | ring_last_seqno(struct intel_ring_buffer *ring) | |
852835f3 | 1776 | { |
893eead0 CW |
1777 | return list_entry(ring->request_list.prev, |
1778 | struct drm_i915_gem_request, list)->seqno; | |
1779 | } | |
1780 | ||
9107e9d2 CW |
1781 | static bool |
1782 | ring_idle(struct intel_ring_buffer *ring, u32 seqno) | |
1783 | { | |
1784 | return (list_empty(&ring->request_list) || | |
1785 | i915_seqno_passed(seqno, ring_last_seqno(ring))); | |
f65d9421 BG |
1786 | } |
1787 | ||
6274f212 CW |
1788 | static struct intel_ring_buffer * |
1789 | semaphore_waits_for(struct intel_ring_buffer *ring, u32 *seqno) | |
a24a11e6 CW |
1790 | { |
1791 | struct drm_i915_private *dev_priv = ring->dev->dev_private; | |
6274f212 | 1792 | u32 cmd, ipehr, acthd, acthd_min; |
a24a11e6 CW |
1793 | |
1794 | ipehr = I915_READ(RING_IPEHR(ring->mmio_base)); | |
1795 | if ((ipehr & ~(0x3 << 16)) != | |
1796 | (MI_SEMAPHORE_MBOX | MI_SEMAPHORE_COMPARE | MI_SEMAPHORE_REGISTER)) | |
6274f212 | 1797 | return NULL; |
a24a11e6 CW |
1798 | |
1799 | /* ACTHD is likely pointing to the dword after the actual command, | |
1800 | * so scan backwards until we find the MBOX. | |
1801 | */ | |
6274f212 | 1802 | acthd = intel_ring_get_active_head(ring) & HEAD_ADDR; |
a24a11e6 CW |
1803 | acthd_min = max((int)acthd - 3 * 4, 0); |
1804 | do { | |
1805 | cmd = ioread32(ring->virtual_start + acthd); | |
1806 | if (cmd == ipehr) | |
1807 | break; | |
1808 | ||
1809 | acthd -= 4; | |
1810 | if (acthd < acthd_min) | |
6274f212 | 1811 | return NULL; |
a24a11e6 CW |
1812 | } while (1); |
1813 | ||
6274f212 CW |
1814 | *seqno = ioread32(ring->virtual_start+acthd+4)+1; |
1815 | return &dev_priv->ring[(ring->id + (((ipehr >> 17) & 1) + 1)) % 3]; | |
a24a11e6 CW |
1816 | } |
1817 | ||
6274f212 CW |
1818 | static int semaphore_passed(struct intel_ring_buffer *ring) |
1819 | { | |
1820 | struct drm_i915_private *dev_priv = ring->dev->dev_private; | |
1821 | struct intel_ring_buffer *signaller; | |
1822 | u32 seqno, ctl; | |
1823 | ||
1824 | ring->hangcheck.deadlock = true; | |
1825 | ||
1826 | signaller = semaphore_waits_for(ring, &seqno); | |
1827 | if (signaller == NULL || signaller->hangcheck.deadlock) | |
1828 | return -1; | |
1829 | ||
1830 | /* cursory check for an unkickable deadlock */ | |
1831 | ctl = I915_READ_CTL(signaller); | |
1832 | if (ctl & RING_WAIT_SEMAPHORE && semaphore_passed(signaller) < 0) | |
1833 | return -1; | |
1834 | ||
1835 | return i915_seqno_passed(signaller->get_seqno(signaller, false), seqno); | |
1836 | } | |
1837 | ||
1838 | static void semaphore_clear_deadlocks(struct drm_i915_private *dev_priv) | |
1839 | { | |
1840 | struct intel_ring_buffer *ring; | |
1841 | int i; | |
1842 | ||
1843 | for_each_ring(ring, dev_priv, i) | |
1844 | ring->hangcheck.deadlock = false; | |
1845 | } | |
1846 | ||
ad8beaea MK |
1847 | static enum intel_ring_hangcheck_action |
1848 | ring_stuck(struct intel_ring_buffer *ring, u32 acthd) | |
1ec14ad3 CW |
1849 | { |
1850 | struct drm_device *dev = ring->dev; | |
1851 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9107e9d2 CW |
1852 | u32 tmp; |
1853 | ||
6274f212 | 1854 | if (ring->hangcheck.acthd != acthd) |
f2f4d82f | 1855 | return HANGCHECK_ACTIVE; |
6274f212 | 1856 | |
9107e9d2 | 1857 | if (IS_GEN2(dev)) |
f2f4d82f | 1858 | return HANGCHECK_HUNG; |
9107e9d2 CW |
1859 | |
1860 | /* Is the chip hanging on a WAIT_FOR_EVENT? | |
1861 | * If so we can simply poke the RB_WAIT bit | |
1862 | * and break the hang. This should work on | |
1863 | * all but the second generation chipsets. | |
1864 | */ | |
1865 | tmp = I915_READ_CTL(ring); | |
1ec14ad3 CW |
1866 | if (tmp & RING_WAIT) { |
1867 | DRM_ERROR("Kicking stuck wait on %s\n", | |
1868 | ring->name); | |
1869 | I915_WRITE_CTL(ring, tmp); | |
f2f4d82f | 1870 | return HANGCHECK_KICK; |
6274f212 CW |
1871 | } |
1872 | ||
1873 | if (INTEL_INFO(dev)->gen >= 6 && tmp & RING_WAIT_SEMAPHORE) { | |
1874 | switch (semaphore_passed(ring)) { | |
1875 | default: | |
f2f4d82f | 1876 | return HANGCHECK_HUNG; |
6274f212 CW |
1877 | case 1: |
1878 | DRM_ERROR("Kicking stuck semaphore on %s\n", | |
1879 | ring->name); | |
1880 | I915_WRITE_CTL(ring, tmp); | |
f2f4d82f | 1881 | return HANGCHECK_KICK; |
6274f212 | 1882 | case 0: |
f2f4d82f | 1883 | return HANGCHECK_WAIT; |
6274f212 | 1884 | } |
9107e9d2 | 1885 | } |
ed5cbb03 | 1886 | |
f2f4d82f | 1887 | return HANGCHECK_HUNG; |
ed5cbb03 MK |
1888 | } |
1889 | ||
f65d9421 BG |
1890 | /** |
1891 | * This is called when the chip hasn't reported back with completed | |
05407ff8 MK |
1892 | * batchbuffers in a long time. We keep track per ring seqno progress and |
1893 | * if there are no progress, hangcheck score for that ring is increased. | |
1894 | * Further, acthd is inspected to see if the ring is stuck. On stuck case | |
1895 | * we kick the ring. If we see no progress on three subsequent calls | |
1896 | * we assume chip is wedged and try to fix it by resetting the chip. | |
f65d9421 | 1897 | */ |
a658b5d2 | 1898 | static void i915_hangcheck_elapsed(unsigned long data) |
f65d9421 BG |
1899 | { |
1900 | struct drm_device *dev = (struct drm_device *)data; | |
1901 | drm_i915_private_t *dev_priv = dev->dev_private; | |
b4519513 | 1902 | struct intel_ring_buffer *ring; |
b4519513 | 1903 | int i; |
05407ff8 | 1904 | int busy_count = 0, rings_hung = 0; |
9107e9d2 CW |
1905 | bool stuck[I915_NUM_RINGS] = { 0 }; |
1906 | #define BUSY 1 | |
1907 | #define KICK 5 | |
1908 | #define HUNG 20 | |
1909 | #define FIRE 30 | |
893eead0 | 1910 | |
3e0dc6b0 BW |
1911 | if (!i915_enable_hangcheck) |
1912 | return; | |
1913 | ||
b4519513 | 1914 | for_each_ring(ring, dev_priv, i) { |
05407ff8 | 1915 | u32 seqno, acthd; |
9107e9d2 | 1916 | bool busy = true; |
05407ff8 | 1917 | |
6274f212 CW |
1918 | semaphore_clear_deadlocks(dev_priv); |
1919 | ||
05407ff8 MK |
1920 | seqno = ring->get_seqno(ring, false); |
1921 | acthd = intel_ring_get_active_head(ring); | |
b4519513 | 1922 | |
9107e9d2 CW |
1923 | if (ring->hangcheck.seqno == seqno) { |
1924 | if (ring_idle(ring, seqno)) { | |
1925 | if (waitqueue_active(&ring->irq_queue)) { | |
1926 | /* Issue a wake-up to catch stuck h/w. */ | |
1927 | DRM_ERROR("Hangcheck timer elapsed... %s idle\n", | |
1928 | ring->name); | |
1929 | wake_up_all(&ring->irq_queue); | |
1930 | ring->hangcheck.score += HUNG; | |
1931 | } else | |
1932 | busy = false; | |
05407ff8 | 1933 | } else { |
6274f212 CW |
1934 | /* We always increment the hangcheck score |
1935 | * if the ring is busy and still processing | |
1936 | * the same request, so that no single request | |
1937 | * can run indefinitely (such as a chain of | |
1938 | * batches). The only time we do not increment | |
1939 | * the hangcheck score on this ring, if this | |
1940 | * ring is in a legitimate wait for another | |
1941 | * ring. In that case the waiting ring is a | |
1942 | * victim and we want to be sure we catch the | |
1943 | * right culprit. Then every time we do kick | |
1944 | * the ring, add a small increment to the | |
1945 | * score so that we can catch a batch that is | |
1946 | * being repeatedly kicked and so responsible | |
1947 | * for stalling the machine. | |
1948 | */ | |
ad8beaea MK |
1949 | ring->hangcheck.action = ring_stuck(ring, |
1950 | acthd); | |
1951 | ||
1952 | switch (ring->hangcheck.action) { | |
f2f4d82f | 1953 | case HANGCHECK_WAIT: |
6274f212 | 1954 | break; |
f2f4d82f | 1955 | case HANGCHECK_ACTIVE: |
ea04cb31 | 1956 | ring->hangcheck.score += BUSY; |
6274f212 | 1957 | break; |
f2f4d82f | 1958 | case HANGCHECK_KICK: |
ea04cb31 | 1959 | ring->hangcheck.score += KICK; |
6274f212 | 1960 | break; |
f2f4d82f | 1961 | case HANGCHECK_HUNG: |
ea04cb31 | 1962 | ring->hangcheck.score += HUNG; |
6274f212 CW |
1963 | stuck[i] = true; |
1964 | break; | |
1965 | } | |
05407ff8 | 1966 | } |
9107e9d2 CW |
1967 | } else { |
1968 | /* Gradually reduce the count so that we catch DoS | |
1969 | * attempts across multiple batches. | |
1970 | */ | |
1971 | if (ring->hangcheck.score > 0) | |
1972 | ring->hangcheck.score--; | |
d1e61e7f CW |
1973 | } |
1974 | ||
05407ff8 MK |
1975 | ring->hangcheck.seqno = seqno; |
1976 | ring->hangcheck.acthd = acthd; | |
9107e9d2 | 1977 | busy_count += busy; |
893eead0 | 1978 | } |
b9201c14 | 1979 | |
92cab734 | 1980 | for_each_ring(ring, dev_priv, i) { |
9107e9d2 | 1981 | if (ring->hangcheck.score > FIRE) { |
acd78c11 | 1982 | DRM_ERROR("%s on %s\n", |
05407ff8 | 1983 | stuck[i] ? "stuck" : "no progress", |
a43adf07 CW |
1984 | ring->name); |
1985 | rings_hung++; | |
92cab734 MK |
1986 | } |
1987 | } | |
1988 | ||
05407ff8 MK |
1989 | if (rings_hung) |
1990 | return i915_handle_error(dev, true); | |
f65d9421 | 1991 | |
05407ff8 MK |
1992 | if (busy_count) |
1993 | /* Reset timer case chip hangs without another request | |
1994 | * being added */ | |
10cd45b6 MK |
1995 | i915_queue_hangcheck(dev); |
1996 | } | |
1997 | ||
1998 | void i915_queue_hangcheck(struct drm_device *dev) | |
1999 | { | |
2000 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2001 | if (!i915_enable_hangcheck) | |
2002 | return; | |
2003 | ||
2004 | mod_timer(&dev_priv->gpu_error.hangcheck_timer, | |
2005 | round_jiffies_up(jiffies + DRM_I915_HANGCHECK_JIFFIES)); | |
f65d9421 BG |
2006 | } |
2007 | ||
91738a95 PZ |
2008 | static void ibx_irq_preinstall(struct drm_device *dev) |
2009 | { | |
2010 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2011 | ||
2012 | if (HAS_PCH_NOP(dev)) | |
2013 | return; | |
2014 | ||
2015 | /* south display irq */ | |
2016 | I915_WRITE(SDEIMR, 0xffffffff); | |
2017 | /* | |
2018 | * SDEIER is also touched by the interrupt handler to work around missed | |
2019 | * PCH interrupts. Hence we can't update it after the interrupt handler | |
2020 | * is enabled - instead we unconditionally enable all PCH interrupt | |
2021 | * sources here, but then only unmask them as needed with SDEIMR. | |
2022 | */ | |
2023 | I915_WRITE(SDEIER, 0xffffffff); | |
2024 | POSTING_READ(SDEIER); | |
2025 | } | |
2026 | ||
d18ea1b5 DV |
2027 | static void gen5_gt_irq_preinstall(struct drm_device *dev) |
2028 | { | |
2029 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2030 | ||
2031 | /* and GT */ | |
2032 | I915_WRITE(GTIMR, 0xffffffff); | |
2033 | I915_WRITE(GTIER, 0x0); | |
2034 | POSTING_READ(GTIER); | |
2035 | ||
2036 | if (INTEL_INFO(dev)->gen >= 6) { | |
2037 | /* and PM */ | |
2038 | I915_WRITE(GEN6_PMIMR, 0xffffffff); | |
2039 | I915_WRITE(GEN6_PMIER, 0x0); | |
2040 | POSTING_READ(GEN6_PMIER); | |
2041 | } | |
2042 | } | |
2043 | ||
1da177e4 LT |
2044 | /* drm_dma.h hooks |
2045 | */ | |
f71d4af4 | 2046 | static void ironlake_irq_preinstall(struct drm_device *dev) |
036a4a7d ZW |
2047 | { |
2048 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2049 | ||
4697995b JB |
2050 | atomic_set(&dev_priv->irq_received, 0); |
2051 | ||
036a4a7d | 2052 | I915_WRITE(HWSTAM, 0xeffe); |
bdfcdb63 | 2053 | |
036a4a7d ZW |
2054 | I915_WRITE(DEIMR, 0xffffffff); |
2055 | I915_WRITE(DEIER, 0x0); | |
3143a2bf | 2056 | POSTING_READ(DEIER); |
036a4a7d | 2057 | |
d18ea1b5 | 2058 | gen5_gt_irq_preinstall(dev); |
c650156a | 2059 | |
91738a95 | 2060 | ibx_irq_preinstall(dev); |
7d99163d BW |
2061 | } |
2062 | ||
7e231dbe JB |
2063 | static void valleyview_irq_preinstall(struct drm_device *dev) |
2064 | { | |
2065 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2066 | int pipe; | |
2067 | ||
2068 | atomic_set(&dev_priv->irq_received, 0); | |
2069 | ||
7e231dbe JB |
2070 | /* VLV magic */ |
2071 | I915_WRITE(VLV_IMR, 0); | |
2072 | I915_WRITE(RING_IMR(RENDER_RING_BASE), 0); | |
2073 | I915_WRITE(RING_IMR(GEN6_BSD_RING_BASE), 0); | |
2074 | I915_WRITE(RING_IMR(BLT_RING_BASE), 0); | |
2075 | ||
7e231dbe JB |
2076 | /* and GT */ |
2077 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
2078 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
d18ea1b5 DV |
2079 | |
2080 | gen5_gt_irq_preinstall(dev); | |
7e231dbe JB |
2081 | |
2082 | I915_WRITE(DPINVGTT, 0xff); | |
2083 | ||
2084 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
2085 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
2086 | for_each_pipe(pipe) | |
2087 | I915_WRITE(PIPESTAT(pipe), 0xffff); | |
2088 | I915_WRITE(VLV_IIR, 0xffffffff); | |
2089 | I915_WRITE(VLV_IMR, 0xffffffff); | |
2090 | I915_WRITE(VLV_IER, 0x0); | |
2091 | POSTING_READ(VLV_IER); | |
2092 | } | |
2093 | ||
82a28bcf | 2094 | static void ibx_hpd_irq_setup(struct drm_device *dev) |
7fe0b973 KP |
2095 | { |
2096 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
82a28bcf DV |
2097 | struct drm_mode_config *mode_config = &dev->mode_config; |
2098 | struct intel_encoder *intel_encoder; | |
fee884ed | 2099 | u32 hotplug_irqs, hotplug, enabled_irqs = 0; |
82a28bcf DV |
2100 | |
2101 | if (HAS_PCH_IBX(dev)) { | |
fee884ed | 2102 | hotplug_irqs = SDE_HOTPLUG_MASK; |
82a28bcf | 2103 | list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head) |
cd569aed | 2104 | if (dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_ENABLED) |
fee884ed | 2105 | enabled_irqs |= hpd_ibx[intel_encoder->hpd_pin]; |
82a28bcf | 2106 | } else { |
fee884ed | 2107 | hotplug_irqs = SDE_HOTPLUG_MASK_CPT; |
82a28bcf | 2108 | list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head) |
cd569aed | 2109 | if (dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_ENABLED) |
fee884ed | 2110 | enabled_irqs |= hpd_cpt[intel_encoder->hpd_pin]; |
82a28bcf | 2111 | } |
7fe0b973 | 2112 | |
fee884ed | 2113 | ibx_display_interrupt_update(dev_priv, hotplug_irqs, enabled_irqs); |
82a28bcf DV |
2114 | |
2115 | /* | |
2116 | * Enable digital hotplug on the PCH, and configure the DP short pulse | |
2117 | * duration to 2ms (which is the minimum in the Display Port spec) | |
2118 | * | |
2119 | * This register is the same on all known PCH chips. | |
2120 | */ | |
7fe0b973 KP |
2121 | hotplug = I915_READ(PCH_PORT_HOTPLUG); |
2122 | hotplug &= ~(PORTD_PULSE_DURATION_MASK|PORTC_PULSE_DURATION_MASK|PORTB_PULSE_DURATION_MASK); | |
2123 | hotplug |= PORTD_HOTPLUG_ENABLE | PORTD_PULSE_DURATION_2ms; | |
2124 | hotplug |= PORTC_HOTPLUG_ENABLE | PORTC_PULSE_DURATION_2ms; | |
2125 | hotplug |= PORTB_HOTPLUG_ENABLE | PORTB_PULSE_DURATION_2ms; | |
2126 | I915_WRITE(PCH_PORT_HOTPLUG, hotplug); | |
2127 | } | |
2128 | ||
d46da437 PZ |
2129 | static void ibx_irq_postinstall(struct drm_device *dev) |
2130 | { | |
2131 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
82a28bcf | 2132 | u32 mask; |
e5868a31 | 2133 | |
692a04cf DV |
2134 | if (HAS_PCH_NOP(dev)) |
2135 | return; | |
2136 | ||
8664281b PZ |
2137 | if (HAS_PCH_IBX(dev)) { |
2138 | mask = SDE_GMBUS | SDE_AUX_MASK | SDE_TRANSB_FIFO_UNDER | | |
de032bf4 | 2139 | SDE_TRANSA_FIFO_UNDER | SDE_POISON; |
8664281b PZ |
2140 | } else { |
2141 | mask = SDE_GMBUS_CPT | SDE_AUX_MASK_CPT | SDE_ERROR_CPT; | |
2142 | ||
2143 | I915_WRITE(SERR_INT, I915_READ(SERR_INT)); | |
2144 | } | |
ab5c608b | 2145 | |
d46da437 PZ |
2146 | I915_WRITE(SDEIIR, I915_READ(SDEIIR)); |
2147 | I915_WRITE(SDEIMR, ~mask); | |
d46da437 PZ |
2148 | } |
2149 | ||
0a9a8c91 DV |
2150 | static void gen5_gt_irq_postinstall(struct drm_device *dev) |
2151 | { | |
2152 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2153 | u32 pm_irqs, gt_irqs; | |
2154 | ||
2155 | pm_irqs = gt_irqs = 0; | |
2156 | ||
2157 | dev_priv->gt_irq_mask = ~0; | |
2158 | if (HAS_L3_GPU_CACHE(dev)) { | |
2159 | /* L3 parity interrupt is always unmasked. */ | |
2160 | dev_priv->gt_irq_mask = ~GT_RENDER_L3_PARITY_ERROR_INTERRUPT; | |
2161 | gt_irqs |= GT_RENDER_L3_PARITY_ERROR_INTERRUPT; | |
2162 | } | |
2163 | ||
2164 | gt_irqs |= GT_RENDER_USER_INTERRUPT; | |
2165 | if (IS_GEN5(dev)) { | |
2166 | gt_irqs |= GT_RENDER_PIPECTL_NOTIFY_INTERRUPT | | |
2167 | ILK_BSD_USER_INTERRUPT; | |
2168 | } else { | |
2169 | gt_irqs |= GT_BLT_USER_INTERRUPT | GT_BSD_USER_INTERRUPT; | |
2170 | } | |
2171 | ||
2172 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
2173 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); | |
2174 | I915_WRITE(GTIER, gt_irqs); | |
2175 | POSTING_READ(GTIER); | |
2176 | ||
2177 | if (INTEL_INFO(dev)->gen >= 6) { | |
2178 | pm_irqs |= GEN6_PM_RPS_EVENTS; | |
2179 | ||
2180 | if (HAS_VEBOX(dev)) | |
2181 | pm_irqs |= PM_VEBOX_USER_INTERRUPT; | |
2182 | ||
2183 | I915_WRITE(GEN6_PMIIR, I915_READ(GEN6_PMIIR)); | |
2184 | I915_WRITE(GEN6_PMIMR, 0xffffffff); | |
2185 | I915_WRITE(GEN6_PMIER, pm_irqs); | |
2186 | POSTING_READ(GEN6_PMIER); | |
2187 | } | |
2188 | } | |
2189 | ||
f71d4af4 | 2190 | static int ironlake_irq_postinstall(struct drm_device *dev) |
036a4a7d | 2191 | { |
4bc9d430 | 2192 | unsigned long irqflags; |
036a4a7d | 2193 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
8e76f8dc PZ |
2194 | u32 display_mask, extra_mask; |
2195 | ||
2196 | if (INTEL_INFO(dev)->gen >= 7) { | |
2197 | display_mask = (DE_MASTER_IRQ_CONTROL | DE_GSE_IVB | | |
2198 | DE_PCH_EVENT_IVB | DE_PLANEC_FLIP_DONE_IVB | | |
2199 | DE_PLANEB_FLIP_DONE_IVB | | |
2200 | DE_PLANEA_FLIP_DONE_IVB | DE_AUX_CHANNEL_A_IVB | | |
2201 | DE_ERR_INT_IVB); | |
2202 | extra_mask = (DE_PIPEC_VBLANK_IVB | DE_PIPEB_VBLANK_IVB | | |
2203 | DE_PIPEA_VBLANK_IVB); | |
2204 | ||
2205 | I915_WRITE(GEN7_ERR_INT, I915_READ(GEN7_ERR_INT)); | |
2206 | } else { | |
2207 | display_mask = (DE_MASTER_IRQ_CONTROL | DE_GSE | DE_PCH_EVENT | | |
2208 | DE_PLANEA_FLIP_DONE | DE_PLANEB_FLIP_DONE | | |
2209 | DE_AUX_CHANNEL_A | DE_PIPEB_FIFO_UNDERRUN | | |
2210 | DE_PIPEA_FIFO_UNDERRUN | DE_POISON); | |
2211 | extra_mask = DE_PIPEA_VBLANK | DE_PIPEB_VBLANK | DE_PCU_EVENT; | |
2212 | } | |
036a4a7d | 2213 | |
1ec14ad3 | 2214 | dev_priv->irq_mask = ~display_mask; |
036a4a7d ZW |
2215 | |
2216 | /* should always can generate irq */ | |
2217 | I915_WRITE(DEIIR, I915_READ(DEIIR)); | |
1ec14ad3 | 2218 | I915_WRITE(DEIMR, dev_priv->irq_mask); |
8e76f8dc | 2219 | I915_WRITE(DEIER, display_mask | extra_mask); |
3143a2bf | 2220 | POSTING_READ(DEIER); |
036a4a7d | 2221 | |
0a9a8c91 | 2222 | gen5_gt_irq_postinstall(dev); |
036a4a7d | 2223 | |
d46da437 | 2224 | ibx_irq_postinstall(dev); |
7fe0b973 | 2225 | |
f97108d1 | 2226 | if (IS_IRONLAKE_M(dev)) { |
6005ce42 DV |
2227 | /* Enable PCU event interrupts |
2228 | * | |
2229 | * spinlocking not required here for correctness since interrupt | |
4bc9d430 DV |
2230 | * setup is guaranteed to run in single-threaded context. But we |
2231 | * need it to make the assert_spin_locked happy. */ | |
2232 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
f97108d1 | 2233 | ironlake_enable_display_irq(dev_priv, DE_PCU_EVENT); |
4bc9d430 | 2234 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
f97108d1 JB |
2235 | } |
2236 | ||
036a4a7d ZW |
2237 | return 0; |
2238 | } | |
2239 | ||
7e231dbe JB |
2240 | static int valleyview_irq_postinstall(struct drm_device *dev) |
2241 | { | |
2242 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
7e231dbe | 2243 | u32 enable_mask; |
31acc7f5 | 2244 | u32 pipestat_enable = PLANE_FLIP_DONE_INT_EN_VLV; |
b79480ba | 2245 | unsigned long irqflags; |
7e231dbe JB |
2246 | |
2247 | enable_mask = I915_DISPLAY_PORT_INTERRUPT; | |
31acc7f5 JB |
2248 | enable_mask |= I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | |
2249 | I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT | | |
2250 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
7e231dbe JB |
2251 | I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; |
2252 | ||
31acc7f5 JB |
2253 | /* |
2254 | *Leave vblank interrupts masked initially. enable/disable will | |
2255 | * toggle them based on usage. | |
2256 | */ | |
2257 | dev_priv->irq_mask = (~enable_mask) | | |
2258 | I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT | | |
2259 | I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; | |
7e231dbe | 2260 | |
20afbda2 DV |
2261 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
2262 | POSTING_READ(PORT_HOTPLUG_EN); | |
2263 | ||
7e231dbe JB |
2264 | I915_WRITE(VLV_IMR, dev_priv->irq_mask); |
2265 | I915_WRITE(VLV_IER, enable_mask); | |
2266 | I915_WRITE(VLV_IIR, 0xffffffff); | |
2267 | I915_WRITE(PIPESTAT(0), 0xffff); | |
2268 | I915_WRITE(PIPESTAT(1), 0xffff); | |
2269 | POSTING_READ(VLV_IER); | |
2270 | ||
b79480ba DV |
2271 | /* Interrupt setup is already guaranteed to be single-threaded, this is |
2272 | * just to make the assert_spin_locked check happy. */ | |
2273 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
31acc7f5 | 2274 | i915_enable_pipestat(dev_priv, 0, pipestat_enable); |
515ac2bb | 2275 | i915_enable_pipestat(dev_priv, 0, PIPE_GMBUS_EVENT_ENABLE); |
31acc7f5 | 2276 | i915_enable_pipestat(dev_priv, 1, pipestat_enable); |
b79480ba | 2277 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
31acc7f5 | 2278 | |
7e231dbe JB |
2279 | I915_WRITE(VLV_IIR, 0xffffffff); |
2280 | I915_WRITE(VLV_IIR, 0xffffffff); | |
2281 | ||
0a9a8c91 | 2282 | gen5_gt_irq_postinstall(dev); |
7e231dbe JB |
2283 | |
2284 | /* ack & enable invalid PTE error interrupts */ | |
2285 | #if 0 /* FIXME: add support to irq handler for checking these bits */ | |
2286 | I915_WRITE(DPINVGTT, DPINVGTT_STATUS_MASK); | |
2287 | I915_WRITE(DPINVGTT, DPINVGTT_EN_MASK); | |
2288 | #endif | |
2289 | ||
2290 | I915_WRITE(VLV_MASTER_IER, MASTER_INTERRUPT_ENABLE); | |
20afbda2 DV |
2291 | |
2292 | return 0; | |
2293 | } | |
2294 | ||
7e231dbe JB |
2295 | static void valleyview_irq_uninstall(struct drm_device *dev) |
2296 | { | |
2297 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2298 | int pipe; | |
2299 | ||
2300 | if (!dev_priv) | |
2301 | return; | |
2302 | ||
ac4c16c5 EE |
2303 | del_timer_sync(&dev_priv->hotplug_reenable_timer); |
2304 | ||
7e231dbe JB |
2305 | for_each_pipe(pipe) |
2306 | I915_WRITE(PIPESTAT(pipe), 0xffff); | |
2307 | ||
2308 | I915_WRITE(HWSTAM, 0xffffffff); | |
2309 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
2310 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
2311 | for_each_pipe(pipe) | |
2312 | I915_WRITE(PIPESTAT(pipe), 0xffff); | |
2313 | I915_WRITE(VLV_IIR, 0xffffffff); | |
2314 | I915_WRITE(VLV_IMR, 0xffffffff); | |
2315 | I915_WRITE(VLV_IER, 0x0); | |
2316 | POSTING_READ(VLV_IER); | |
2317 | } | |
2318 | ||
f71d4af4 | 2319 | static void ironlake_irq_uninstall(struct drm_device *dev) |
036a4a7d ZW |
2320 | { |
2321 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
4697995b JB |
2322 | |
2323 | if (!dev_priv) | |
2324 | return; | |
2325 | ||
ac4c16c5 EE |
2326 | del_timer_sync(&dev_priv->hotplug_reenable_timer); |
2327 | ||
036a4a7d ZW |
2328 | I915_WRITE(HWSTAM, 0xffffffff); |
2329 | ||
2330 | I915_WRITE(DEIMR, 0xffffffff); | |
2331 | I915_WRITE(DEIER, 0x0); | |
2332 | I915_WRITE(DEIIR, I915_READ(DEIIR)); | |
8664281b PZ |
2333 | if (IS_GEN7(dev)) |
2334 | I915_WRITE(GEN7_ERR_INT, I915_READ(GEN7_ERR_INT)); | |
036a4a7d ZW |
2335 | |
2336 | I915_WRITE(GTIMR, 0xffffffff); | |
2337 | I915_WRITE(GTIER, 0x0); | |
2338 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
192aac1f | 2339 | |
ab5c608b BW |
2340 | if (HAS_PCH_NOP(dev)) |
2341 | return; | |
2342 | ||
192aac1f KP |
2343 | I915_WRITE(SDEIMR, 0xffffffff); |
2344 | I915_WRITE(SDEIER, 0x0); | |
2345 | I915_WRITE(SDEIIR, I915_READ(SDEIIR)); | |
8664281b PZ |
2346 | if (HAS_PCH_CPT(dev) || HAS_PCH_LPT(dev)) |
2347 | I915_WRITE(SERR_INT, I915_READ(SERR_INT)); | |
036a4a7d ZW |
2348 | } |
2349 | ||
a266c7d5 | 2350 | static void i8xx_irq_preinstall(struct drm_device * dev) |
1da177e4 LT |
2351 | { |
2352 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
9db4a9c7 | 2353 | int pipe; |
91e3738e | 2354 | |
a266c7d5 | 2355 | atomic_set(&dev_priv->irq_received, 0); |
5ca58282 | 2356 | |
9db4a9c7 JB |
2357 | for_each_pipe(pipe) |
2358 | I915_WRITE(PIPESTAT(pipe), 0); | |
a266c7d5 CW |
2359 | I915_WRITE16(IMR, 0xffff); |
2360 | I915_WRITE16(IER, 0x0); | |
2361 | POSTING_READ16(IER); | |
c2798b19 CW |
2362 | } |
2363 | ||
2364 | static int i8xx_irq_postinstall(struct drm_device *dev) | |
2365 | { | |
2366 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2367 | ||
c2798b19 CW |
2368 | I915_WRITE16(EMR, |
2369 | ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH)); | |
2370 | ||
2371 | /* Unmask the interrupts that we always want on. */ | |
2372 | dev_priv->irq_mask = | |
2373 | ~(I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
2374 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
2375 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
2376 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | | |
2377 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
2378 | I915_WRITE16(IMR, dev_priv->irq_mask); | |
2379 | ||
2380 | I915_WRITE16(IER, | |
2381 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
2382 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
2383 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT | | |
2384 | I915_USER_INTERRUPT); | |
2385 | POSTING_READ16(IER); | |
2386 | ||
2387 | return 0; | |
2388 | } | |
2389 | ||
90a72f87 VS |
2390 | /* |
2391 | * Returns true when a page flip has completed. | |
2392 | */ | |
2393 | static bool i8xx_handle_vblank(struct drm_device *dev, | |
2394 | int pipe, u16 iir) | |
2395 | { | |
2396 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2397 | u16 flip_pending = DISPLAY_PLANE_FLIP_PENDING(pipe); | |
2398 | ||
2399 | if (!drm_handle_vblank(dev, pipe)) | |
2400 | return false; | |
2401 | ||
2402 | if ((iir & flip_pending) == 0) | |
2403 | return false; | |
2404 | ||
2405 | intel_prepare_page_flip(dev, pipe); | |
2406 | ||
2407 | /* We detect FlipDone by looking for the change in PendingFlip from '1' | |
2408 | * to '0' on the following vblank, i.e. IIR has the Pendingflip | |
2409 | * asserted following the MI_DISPLAY_FLIP, but ISR is deasserted, hence | |
2410 | * the flip is completed (no longer pending). Since this doesn't raise | |
2411 | * an interrupt per se, we watch for the change at vblank. | |
2412 | */ | |
2413 | if (I915_READ16(ISR) & flip_pending) | |
2414 | return false; | |
2415 | ||
2416 | intel_finish_page_flip(dev, pipe); | |
2417 | ||
2418 | return true; | |
2419 | } | |
2420 | ||
ff1f525e | 2421 | static irqreturn_t i8xx_irq_handler(int irq, void *arg) |
c2798b19 CW |
2422 | { |
2423 | struct drm_device *dev = (struct drm_device *) arg; | |
2424 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
c2798b19 CW |
2425 | u16 iir, new_iir; |
2426 | u32 pipe_stats[2]; | |
2427 | unsigned long irqflags; | |
c2798b19 CW |
2428 | int pipe; |
2429 | u16 flip_mask = | |
2430 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
2431 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; | |
2432 | ||
2433 | atomic_inc(&dev_priv->irq_received); | |
2434 | ||
2435 | iir = I915_READ16(IIR); | |
2436 | if (iir == 0) | |
2437 | return IRQ_NONE; | |
2438 | ||
2439 | while (iir & ~flip_mask) { | |
2440 | /* Can't rely on pipestat interrupt bit in iir as it might | |
2441 | * have been cleared after the pipestat interrupt was received. | |
2442 | * It doesn't set the bit in iir again, but it still produces | |
2443 | * interrupts (for non-MSI). | |
2444 | */ | |
2445 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
2446 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) | |
2447 | i915_handle_error(dev, false); | |
2448 | ||
2449 | for_each_pipe(pipe) { | |
2450 | int reg = PIPESTAT(pipe); | |
2451 | pipe_stats[pipe] = I915_READ(reg); | |
2452 | ||
2453 | /* | |
2454 | * Clear the PIPE*STAT regs before the IIR | |
2455 | */ | |
2456 | if (pipe_stats[pipe] & 0x8000ffff) { | |
2457 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) | |
2458 | DRM_DEBUG_DRIVER("pipe %c underrun\n", | |
2459 | pipe_name(pipe)); | |
2460 | I915_WRITE(reg, pipe_stats[pipe]); | |
c2798b19 CW |
2461 | } |
2462 | } | |
2463 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
2464 | ||
2465 | I915_WRITE16(IIR, iir & ~flip_mask); | |
2466 | new_iir = I915_READ16(IIR); /* Flush posted writes */ | |
2467 | ||
d05c617e | 2468 | i915_update_dri1_breadcrumb(dev); |
c2798b19 CW |
2469 | |
2470 | if (iir & I915_USER_INTERRUPT) | |
2471 | notify_ring(dev, &dev_priv->ring[RCS]); | |
2472 | ||
2473 | if (pipe_stats[0] & PIPE_VBLANK_INTERRUPT_STATUS && | |
90a72f87 VS |
2474 | i8xx_handle_vblank(dev, 0, iir)) |
2475 | flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(0); | |
c2798b19 CW |
2476 | |
2477 | if (pipe_stats[1] & PIPE_VBLANK_INTERRUPT_STATUS && | |
90a72f87 VS |
2478 | i8xx_handle_vblank(dev, 1, iir)) |
2479 | flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(1); | |
c2798b19 CW |
2480 | |
2481 | iir = new_iir; | |
2482 | } | |
2483 | ||
2484 | return IRQ_HANDLED; | |
2485 | } | |
2486 | ||
2487 | static void i8xx_irq_uninstall(struct drm_device * dev) | |
2488 | { | |
2489 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2490 | int pipe; | |
2491 | ||
c2798b19 CW |
2492 | for_each_pipe(pipe) { |
2493 | /* Clear enable bits; then clear status bits */ | |
2494 | I915_WRITE(PIPESTAT(pipe), 0); | |
2495 | I915_WRITE(PIPESTAT(pipe), I915_READ(PIPESTAT(pipe))); | |
2496 | } | |
2497 | I915_WRITE16(IMR, 0xffff); | |
2498 | I915_WRITE16(IER, 0x0); | |
2499 | I915_WRITE16(IIR, I915_READ16(IIR)); | |
2500 | } | |
2501 | ||
a266c7d5 CW |
2502 | static void i915_irq_preinstall(struct drm_device * dev) |
2503 | { | |
2504 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2505 | int pipe; | |
2506 | ||
2507 | atomic_set(&dev_priv->irq_received, 0); | |
2508 | ||
2509 | if (I915_HAS_HOTPLUG(dev)) { | |
2510 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
2511 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
2512 | } | |
2513 | ||
00d98ebd | 2514 | I915_WRITE16(HWSTAM, 0xeffe); |
a266c7d5 CW |
2515 | for_each_pipe(pipe) |
2516 | I915_WRITE(PIPESTAT(pipe), 0); | |
2517 | I915_WRITE(IMR, 0xffffffff); | |
2518 | I915_WRITE(IER, 0x0); | |
2519 | POSTING_READ(IER); | |
2520 | } | |
2521 | ||
2522 | static int i915_irq_postinstall(struct drm_device *dev) | |
2523 | { | |
2524 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
38bde180 | 2525 | u32 enable_mask; |
a266c7d5 | 2526 | |
38bde180 CW |
2527 | I915_WRITE(EMR, ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH)); |
2528 | ||
2529 | /* Unmask the interrupts that we always want on. */ | |
2530 | dev_priv->irq_mask = | |
2531 | ~(I915_ASLE_INTERRUPT | | |
2532 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
2533 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
2534 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
2535 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | | |
2536 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
2537 | ||
2538 | enable_mask = | |
2539 | I915_ASLE_INTERRUPT | | |
2540 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
2541 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
2542 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT | | |
2543 | I915_USER_INTERRUPT; | |
2544 | ||
a266c7d5 | 2545 | if (I915_HAS_HOTPLUG(dev)) { |
20afbda2 DV |
2546 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
2547 | POSTING_READ(PORT_HOTPLUG_EN); | |
2548 | ||
a266c7d5 CW |
2549 | /* Enable in IER... */ |
2550 | enable_mask |= I915_DISPLAY_PORT_INTERRUPT; | |
2551 | /* and unmask in IMR */ | |
2552 | dev_priv->irq_mask &= ~I915_DISPLAY_PORT_INTERRUPT; | |
2553 | } | |
2554 | ||
a266c7d5 CW |
2555 | I915_WRITE(IMR, dev_priv->irq_mask); |
2556 | I915_WRITE(IER, enable_mask); | |
2557 | POSTING_READ(IER); | |
2558 | ||
f49e38dd | 2559 | i915_enable_asle_pipestat(dev); |
20afbda2 DV |
2560 | |
2561 | return 0; | |
2562 | } | |
2563 | ||
90a72f87 VS |
2564 | /* |
2565 | * Returns true when a page flip has completed. | |
2566 | */ | |
2567 | static bool i915_handle_vblank(struct drm_device *dev, | |
2568 | int plane, int pipe, u32 iir) | |
2569 | { | |
2570 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2571 | u32 flip_pending = DISPLAY_PLANE_FLIP_PENDING(plane); | |
2572 | ||
2573 | if (!drm_handle_vblank(dev, pipe)) | |
2574 | return false; | |
2575 | ||
2576 | if ((iir & flip_pending) == 0) | |
2577 | return false; | |
2578 | ||
2579 | intel_prepare_page_flip(dev, plane); | |
2580 | ||
2581 | /* We detect FlipDone by looking for the change in PendingFlip from '1' | |
2582 | * to '0' on the following vblank, i.e. IIR has the Pendingflip | |
2583 | * asserted following the MI_DISPLAY_FLIP, but ISR is deasserted, hence | |
2584 | * the flip is completed (no longer pending). Since this doesn't raise | |
2585 | * an interrupt per se, we watch for the change at vblank. | |
2586 | */ | |
2587 | if (I915_READ(ISR) & flip_pending) | |
2588 | return false; | |
2589 | ||
2590 | intel_finish_page_flip(dev, pipe); | |
2591 | ||
2592 | return true; | |
2593 | } | |
2594 | ||
ff1f525e | 2595 | static irqreturn_t i915_irq_handler(int irq, void *arg) |
a266c7d5 CW |
2596 | { |
2597 | struct drm_device *dev = (struct drm_device *) arg; | |
2598 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
8291ee90 | 2599 | u32 iir, new_iir, pipe_stats[I915_MAX_PIPES]; |
a266c7d5 | 2600 | unsigned long irqflags; |
38bde180 CW |
2601 | u32 flip_mask = |
2602 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
2603 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; | |
38bde180 | 2604 | int pipe, ret = IRQ_NONE; |
a266c7d5 CW |
2605 | |
2606 | atomic_inc(&dev_priv->irq_received); | |
2607 | ||
2608 | iir = I915_READ(IIR); | |
38bde180 CW |
2609 | do { |
2610 | bool irq_received = (iir & ~flip_mask) != 0; | |
8291ee90 | 2611 | bool blc_event = false; |
a266c7d5 CW |
2612 | |
2613 | /* Can't rely on pipestat interrupt bit in iir as it might | |
2614 | * have been cleared after the pipestat interrupt was received. | |
2615 | * It doesn't set the bit in iir again, but it still produces | |
2616 | * interrupts (for non-MSI). | |
2617 | */ | |
2618 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
2619 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) | |
2620 | i915_handle_error(dev, false); | |
2621 | ||
2622 | for_each_pipe(pipe) { | |
2623 | int reg = PIPESTAT(pipe); | |
2624 | pipe_stats[pipe] = I915_READ(reg); | |
2625 | ||
38bde180 | 2626 | /* Clear the PIPE*STAT regs before the IIR */ |
a266c7d5 CW |
2627 | if (pipe_stats[pipe] & 0x8000ffff) { |
2628 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) | |
2629 | DRM_DEBUG_DRIVER("pipe %c underrun\n", | |
2630 | pipe_name(pipe)); | |
2631 | I915_WRITE(reg, pipe_stats[pipe]); | |
38bde180 | 2632 | irq_received = true; |
a266c7d5 CW |
2633 | } |
2634 | } | |
2635 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
2636 | ||
2637 | if (!irq_received) | |
2638 | break; | |
2639 | ||
a266c7d5 CW |
2640 | /* Consume port. Then clear IIR or we'll miss events */ |
2641 | if ((I915_HAS_HOTPLUG(dev)) && | |
2642 | (iir & I915_DISPLAY_PORT_INTERRUPT)) { | |
2643 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); | |
b543fb04 | 2644 | u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_I915; |
a266c7d5 CW |
2645 | |
2646 | DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", | |
2647 | hotplug_status); | |
91d131d2 DV |
2648 | |
2649 | intel_hpd_irq_handler(dev, hotplug_trigger, hpd_status_i915); | |
2650 | ||
a266c7d5 | 2651 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); |
38bde180 | 2652 | POSTING_READ(PORT_HOTPLUG_STAT); |
a266c7d5 CW |
2653 | } |
2654 | ||
38bde180 | 2655 | I915_WRITE(IIR, iir & ~flip_mask); |
a266c7d5 CW |
2656 | new_iir = I915_READ(IIR); /* Flush posted writes */ |
2657 | ||
a266c7d5 CW |
2658 | if (iir & I915_USER_INTERRUPT) |
2659 | notify_ring(dev, &dev_priv->ring[RCS]); | |
a266c7d5 | 2660 | |
a266c7d5 | 2661 | for_each_pipe(pipe) { |
38bde180 CW |
2662 | int plane = pipe; |
2663 | if (IS_MOBILE(dev)) | |
2664 | plane = !plane; | |
90a72f87 | 2665 | |
8291ee90 | 2666 | if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS && |
90a72f87 VS |
2667 | i915_handle_vblank(dev, plane, pipe, iir)) |
2668 | flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(plane); | |
a266c7d5 CW |
2669 | |
2670 | if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) | |
2671 | blc_event = true; | |
2672 | } | |
2673 | ||
a266c7d5 CW |
2674 | if (blc_event || (iir & I915_ASLE_INTERRUPT)) |
2675 | intel_opregion_asle_intr(dev); | |
2676 | ||
2677 | /* With MSI, interrupts are only generated when iir | |
2678 | * transitions from zero to nonzero. If another bit got | |
2679 | * set while we were handling the existing iir bits, then | |
2680 | * we would never get another interrupt. | |
2681 | * | |
2682 | * This is fine on non-MSI as well, as if we hit this path | |
2683 | * we avoid exiting the interrupt handler only to generate | |
2684 | * another one. | |
2685 | * | |
2686 | * Note that for MSI this could cause a stray interrupt report | |
2687 | * if an interrupt landed in the time between writing IIR and | |
2688 | * the posting read. This should be rare enough to never | |
2689 | * trigger the 99% of 100,000 interrupts test for disabling | |
2690 | * stray interrupts. | |
2691 | */ | |
38bde180 | 2692 | ret = IRQ_HANDLED; |
a266c7d5 | 2693 | iir = new_iir; |
38bde180 | 2694 | } while (iir & ~flip_mask); |
a266c7d5 | 2695 | |
d05c617e | 2696 | i915_update_dri1_breadcrumb(dev); |
8291ee90 | 2697 | |
a266c7d5 CW |
2698 | return ret; |
2699 | } | |
2700 | ||
2701 | static void i915_irq_uninstall(struct drm_device * dev) | |
2702 | { | |
2703 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2704 | int pipe; | |
2705 | ||
ac4c16c5 EE |
2706 | del_timer_sync(&dev_priv->hotplug_reenable_timer); |
2707 | ||
a266c7d5 CW |
2708 | if (I915_HAS_HOTPLUG(dev)) { |
2709 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
2710 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
2711 | } | |
2712 | ||
00d98ebd | 2713 | I915_WRITE16(HWSTAM, 0xffff); |
55b39755 CW |
2714 | for_each_pipe(pipe) { |
2715 | /* Clear enable bits; then clear status bits */ | |
a266c7d5 | 2716 | I915_WRITE(PIPESTAT(pipe), 0); |
55b39755 CW |
2717 | I915_WRITE(PIPESTAT(pipe), I915_READ(PIPESTAT(pipe))); |
2718 | } | |
a266c7d5 CW |
2719 | I915_WRITE(IMR, 0xffffffff); |
2720 | I915_WRITE(IER, 0x0); | |
2721 | ||
a266c7d5 CW |
2722 | I915_WRITE(IIR, I915_READ(IIR)); |
2723 | } | |
2724 | ||
2725 | static void i965_irq_preinstall(struct drm_device * dev) | |
2726 | { | |
2727 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2728 | int pipe; | |
2729 | ||
2730 | atomic_set(&dev_priv->irq_received, 0); | |
2731 | ||
adca4730 CW |
2732 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
2733 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
a266c7d5 CW |
2734 | |
2735 | I915_WRITE(HWSTAM, 0xeffe); | |
2736 | for_each_pipe(pipe) | |
2737 | I915_WRITE(PIPESTAT(pipe), 0); | |
2738 | I915_WRITE(IMR, 0xffffffff); | |
2739 | I915_WRITE(IER, 0x0); | |
2740 | POSTING_READ(IER); | |
2741 | } | |
2742 | ||
2743 | static int i965_irq_postinstall(struct drm_device *dev) | |
2744 | { | |
2745 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
bbba0a97 | 2746 | u32 enable_mask; |
a266c7d5 | 2747 | u32 error_mask; |
b79480ba | 2748 | unsigned long irqflags; |
a266c7d5 | 2749 | |
a266c7d5 | 2750 | /* Unmask the interrupts that we always want on. */ |
bbba0a97 | 2751 | dev_priv->irq_mask = ~(I915_ASLE_INTERRUPT | |
adca4730 | 2752 | I915_DISPLAY_PORT_INTERRUPT | |
bbba0a97 CW |
2753 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | |
2754 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
2755 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
2756 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | | |
2757 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
2758 | ||
2759 | enable_mask = ~dev_priv->irq_mask; | |
21ad8330 VS |
2760 | enable_mask &= ~(I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | |
2761 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT); | |
bbba0a97 CW |
2762 | enable_mask |= I915_USER_INTERRUPT; |
2763 | ||
2764 | if (IS_G4X(dev)) | |
2765 | enable_mask |= I915_BSD_USER_INTERRUPT; | |
a266c7d5 | 2766 | |
b79480ba DV |
2767 | /* Interrupt setup is already guaranteed to be single-threaded, this is |
2768 | * just to make the assert_spin_locked check happy. */ | |
2769 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
515ac2bb | 2770 | i915_enable_pipestat(dev_priv, 0, PIPE_GMBUS_EVENT_ENABLE); |
b79480ba | 2771 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
a266c7d5 | 2772 | |
a266c7d5 CW |
2773 | /* |
2774 | * Enable some error detection, note the instruction error mask | |
2775 | * bit is reserved, so we leave it masked. | |
2776 | */ | |
2777 | if (IS_G4X(dev)) { | |
2778 | error_mask = ~(GM45_ERROR_PAGE_TABLE | | |
2779 | GM45_ERROR_MEM_PRIV | | |
2780 | GM45_ERROR_CP_PRIV | | |
2781 | I915_ERROR_MEMORY_REFRESH); | |
2782 | } else { | |
2783 | error_mask = ~(I915_ERROR_PAGE_TABLE | | |
2784 | I915_ERROR_MEMORY_REFRESH); | |
2785 | } | |
2786 | I915_WRITE(EMR, error_mask); | |
2787 | ||
2788 | I915_WRITE(IMR, dev_priv->irq_mask); | |
2789 | I915_WRITE(IER, enable_mask); | |
2790 | POSTING_READ(IER); | |
2791 | ||
20afbda2 DV |
2792 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
2793 | POSTING_READ(PORT_HOTPLUG_EN); | |
2794 | ||
f49e38dd | 2795 | i915_enable_asle_pipestat(dev); |
20afbda2 DV |
2796 | |
2797 | return 0; | |
2798 | } | |
2799 | ||
bac56d5b | 2800 | static void i915_hpd_irq_setup(struct drm_device *dev) |
20afbda2 DV |
2801 | { |
2802 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
e5868a31 | 2803 | struct drm_mode_config *mode_config = &dev->mode_config; |
cd569aed | 2804 | struct intel_encoder *intel_encoder; |
20afbda2 DV |
2805 | u32 hotplug_en; |
2806 | ||
b5ea2d56 DV |
2807 | assert_spin_locked(&dev_priv->irq_lock); |
2808 | ||
bac56d5b EE |
2809 | if (I915_HAS_HOTPLUG(dev)) { |
2810 | hotplug_en = I915_READ(PORT_HOTPLUG_EN); | |
2811 | hotplug_en &= ~HOTPLUG_INT_EN_MASK; | |
2812 | /* Note HDMI and DP share hotplug bits */ | |
e5868a31 | 2813 | /* enable bits are the same for all generations */ |
cd569aed EE |
2814 | list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head) |
2815 | if (dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_ENABLED) | |
2816 | hotplug_en |= hpd_mask_i915[intel_encoder->hpd_pin]; | |
bac56d5b EE |
2817 | /* Programming the CRT detection parameters tends |
2818 | to generate a spurious hotplug event about three | |
2819 | seconds later. So just do it once. | |
2820 | */ | |
2821 | if (IS_G4X(dev)) | |
2822 | hotplug_en |= CRT_HOTPLUG_ACTIVATION_PERIOD_64; | |
85fc95ba | 2823 | hotplug_en &= ~CRT_HOTPLUG_VOLTAGE_COMPARE_MASK; |
bac56d5b | 2824 | hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50; |
a266c7d5 | 2825 | |
bac56d5b EE |
2826 | /* Ignore TV since it's buggy */ |
2827 | I915_WRITE(PORT_HOTPLUG_EN, hotplug_en); | |
2828 | } | |
a266c7d5 CW |
2829 | } |
2830 | ||
ff1f525e | 2831 | static irqreturn_t i965_irq_handler(int irq, void *arg) |
a266c7d5 CW |
2832 | { |
2833 | struct drm_device *dev = (struct drm_device *) arg; | |
2834 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
a266c7d5 CW |
2835 | u32 iir, new_iir; |
2836 | u32 pipe_stats[I915_MAX_PIPES]; | |
a266c7d5 CW |
2837 | unsigned long irqflags; |
2838 | int irq_received; | |
2839 | int ret = IRQ_NONE, pipe; | |
21ad8330 VS |
2840 | u32 flip_mask = |
2841 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
2842 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; | |
a266c7d5 CW |
2843 | |
2844 | atomic_inc(&dev_priv->irq_received); | |
2845 | ||
2846 | iir = I915_READ(IIR); | |
2847 | ||
a266c7d5 | 2848 | for (;;) { |
2c8ba29f CW |
2849 | bool blc_event = false; |
2850 | ||
21ad8330 | 2851 | irq_received = (iir & ~flip_mask) != 0; |
a266c7d5 CW |
2852 | |
2853 | /* Can't rely on pipestat interrupt bit in iir as it might | |
2854 | * have been cleared after the pipestat interrupt was received. | |
2855 | * It doesn't set the bit in iir again, but it still produces | |
2856 | * interrupts (for non-MSI). | |
2857 | */ | |
2858 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
2859 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) | |
2860 | i915_handle_error(dev, false); | |
2861 | ||
2862 | for_each_pipe(pipe) { | |
2863 | int reg = PIPESTAT(pipe); | |
2864 | pipe_stats[pipe] = I915_READ(reg); | |
2865 | ||
2866 | /* | |
2867 | * Clear the PIPE*STAT regs before the IIR | |
2868 | */ | |
2869 | if (pipe_stats[pipe] & 0x8000ffff) { | |
2870 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) | |
2871 | DRM_DEBUG_DRIVER("pipe %c underrun\n", | |
2872 | pipe_name(pipe)); | |
2873 | I915_WRITE(reg, pipe_stats[pipe]); | |
2874 | irq_received = 1; | |
2875 | } | |
2876 | } | |
2877 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
2878 | ||
2879 | if (!irq_received) | |
2880 | break; | |
2881 | ||
2882 | ret = IRQ_HANDLED; | |
2883 | ||
2884 | /* Consume port. Then clear IIR or we'll miss events */ | |
adca4730 | 2885 | if (iir & I915_DISPLAY_PORT_INTERRUPT) { |
a266c7d5 | 2886 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); |
b543fb04 EE |
2887 | u32 hotplug_trigger = hotplug_status & (IS_G4X(dev) ? |
2888 | HOTPLUG_INT_STATUS_G4X : | |
4f7fd709 | 2889 | HOTPLUG_INT_STATUS_I915); |
a266c7d5 CW |
2890 | |
2891 | DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", | |
2892 | hotplug_status); | |
91d131d2 DV |
2893 | |
2894 | intel_hpd_irq_handler(dev, hotplug_trigger, | |
2895 | IS_G4X(dev) ? hpd_status_gen4 : hpd_status_i915); | |
2896 | ||
a266c7d5 CW |
2897 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); |
2898 | I915_READ(PORT_HOTPLUG_STAT); | |
2899 | } | |
2900 | ||
21ad8330 | 2901 | I915_WRITE(IIR, iir & ~flip_mask); |
a266c7d5 CW |
2902 | new_iir = I915_READ(IIR); /* Flush posted writes */ |
2903 | ||
a266c7d5 CW |
2904 | if (iir & I915_USER_INTERRUPT) |
2905 | notify_ring(dev, &dev_priv->ring[RCS]); | |
2906 | if (iir & I915_BSD_USER_INTERRUPT) | |
2907 | notify_ring(dev, &dev_priv->ring[VCS]); | |
2908 | ||
a266c7d5 | 2909 | for_each_pipe(pipe) { |
2c8ba29f | 2910 | if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS && |
90a72f87 VS |
2911 | i915_handle_vblank(dev, pipe, pipe, iir)) |
2912 | flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(pipe); | |
a266c7d5 CW |
2913 | |
2914 | if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) | |
2915 | blc_event = true; | |
2916 | } | |
2917 | ||
2918 | ||
2919 | if (blc_event || (iir & I915_ASLE_INTERRUPT)) | |
2920 | intel_opregion_asle_intr(dev); | |
2921 | ||
515ac2bb DV |
2922 | if (pipe_stats[0] & PIPE_GMBUS_INTERRUPT_STATUS) |
2923 | gmbus_irq_handler(dev); | |
2924 | ||
a266c7d5 CW |
2925 | /* With MSI, interrupts are only generated when iir |
2926 | * transitions from zero to nonzero. If another bit got | |
2927 | * set while we were handling the existing iir bits, then | |
2928 | * we would never get another interrupt. | |
2929 | * | |
2930 | * This is fine on non-MSI as well, as if we hit this path | |
2931 | * we avoid exiting the interrupt handler only to generate | |
2932 | * another one. | |
2933 | * | |
2934 | * Note that for MSI this could cause a stray interrupt report | |
2935 | * if an interrupt landed in the time between writing IIR and | |
2936 | * the posting read. This should be rare enough to never | |
2937 | * trigger the 99% of 100,000 interrupts test for disabling | |
2938 | * stray interrupts. | |
2939 | */ | |
2940 | iir = new_iir; | |
2941 | } | |
2942 | ||
d05c617e | 2943 | i915_update_dri1_breadcrumb(dev); |
2c8ba29f | 2944 | |
a266c7d5 CW |
2945 | return ret; |
2946 | } | |
2947 | ||
2948 | static void i965_irq_uninstall(struct drm_device * dev) | |
2949 | { | |
2950 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2951 | int pipe; | |
2952 | ||
2953 | if (!dev_priv) | |
2954 | return; | |
2955 | ||
ac4c16c5 EE |
2956 | del_timer_sync(&dev_priv->hotplug_reenable_timer); |
2957 | ||
adca4730 CW |
2958 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
2959 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
a266c7d5 CW |
2960 | |
2961 | I915_WRITE(HWSTAM, 0xffffffff); | |
2962 | for_each_pipe(pipe) | |
2963 | I915_WRITE(PIPESTAT(pipe), 0); | |
2964 | I915_WRITE(IMR, 0xffffffff); | |
2965 | I915_WRITE(IER, 0x0); | |
2966 | ||
2967 | for_each_pipe(pipe) | |
2968 | I915_WRITE(PIPESTAT(pipe), | |
2969 | I915_READ(PIPESTAT(pipe)) & 0x8000ffff); | |
2970 | I915_WRITE(IIR, I915_READ(IIR)); | |
2971 | } | |
2972 | ||
ac4c16c5 EE |
2973 | static void i915_reenable_hotplug_timer_func(unsigned long data) |
2974 | { | |
2975 | drm_i915_private_t *dev_priv = (drm_i915_private_t *)data; | |
2976 | struct drm_device *dev = dev_priv->dev; | |
2977 | struct drm_mode_config *mode_config = &dev->mode_config; | |
2978 | unsigned long irqflags; | |
2979 | int i; | |
2980 | ||
2981 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
2982 | for (i = (HPD_NONE + 1); i < HPD_NUM_PINS; i++) { | |
2983 | struct drm_connector *connector; | |
2984 | ||
2985 | if (dev_priv->hpd_stats[i].hpd_mark != HPD_DISABLED) | |
2986 | continue; | |
2987 | ||
2988 | dev_priv->hpd_stats[i].hpd_mark = HPD_ENABLED; | |
2989 | ||
2990 | list_for_each_entry(connector, &mode_config->connector_list, head) { | |
2991 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
2992 | ||
2993 | if (intel_connector->encoder->hpd_pin == i) { | |
2994 | if (connector->polled != intel_connector->polled) | |
2995 | DRM_DEBUG_DRIVER("Reenabling HPD on connector %s\n", | |
2996 | drm_get_connector_name(connector)); | |
2997 | connector->polled = intel_connector->polled; | |
2998 | if (!connector->polled) | |
2999 | connector->polled = DRM_CONNECTOR_POLL_HPD; | |
3000 | } | |
3001 | } | |
3002 | } | |
3003 | if (dev_priv->display.hpd_irq_setup) | |
3004 | dev_priv->display.hpd_irq_setup(dev); | |
3005 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
3006 | } | |
3007 | ||
f71d4af4 JB |
3008 | void intel_irq_init(struct drm_device *dev) |
3009 | { | |
8b2e326d CW |
3010 | struct drm_i915_private *dev_priv = dev->dev_private; |
3011 | ||
3012 | INIT_WORK(&dev_priv->hotplug_work, i915_hotplug_work_func); | |
99584db3 | 3013 | INIT_WORK(&dev_priv->gpu_error.work, i915_error_work_func); |
c6a828d3 | 3014 | INIT_WORK(&dev_priv->rps.work, gen6_pm_rps_work); |
a4da4fa4 | 3015 | INIT_WORK(&dev_priv->l3_parity.error_work, ivybridge_parity_work); |
8b2e326d | 3016 | |
99584db3 DV |
3017 | setup_timer(&dev_priv->gpu_error.hangcheck_timer, |
3018 | i915_hangcheck_elapsed, | |
61bac78e | 3019 | (unsigned long) dev); |
ac4c16c5 EE |
3020 | setup_timer(&dev_priv->hotplug_reenable_timer, i915_reenable_hotplug_timer_func, |
3021 | (unsigned long) dev_priv); | |
61bac78e | 3022 | |
97a19a24 | 3023 | pm_qos_add_request(&dev_priv->pm_qos, PM_QOS_CPU_DMA_LATENCY, PM_QOS_DEFAULT_VALUE); |
9ee32fea | 3024 | |
f71d4af4 JB |
3025 | dev->driver->get_vblank_counter = i915_get_vblank_counter; |
3026 | dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */ | |
7d4e146f | 3027 | if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) { |
f71d4af4 JB |
3028 | dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */ |
3029 | dev->driver->get_vblank_counter = gm45_get_vblank_counter; | |
3030 | } | |
3031 | ||
c3613de9 KP |
3032 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
3033 | dev->driver->get_vblank_timestamp = i915_get_vblank_timestamp; | |
3034 | else | |
3035 | dev->driver->get_vblank_timestamp = NULL; | |
f71d4af4 JB |
3036 | dev->driver->get_scanout_position = i915_get_crtc_scanoutpos; |
3037 | ||
7e231dbe JB |
3038 | if (IS_VALLEYVIEW(dev)) { |
3039 | dev->driver->irq_handler = valleyview_irq_handler; | |
3040 | dev->driver->irq_preinstall = valleyview_irq_preinstall; | |
3041 | dev->driver->irq_postinstall = valleyview_irq_postinstall; | |
3042 | dev->driver->irq_uninstall = valleyview_irq_uninstall; | |
3043 | dev->driver->enable_vblank = valleyview_enable_vblank; | |
3044 | dev->driver->disable_vblank = valleyview_disable_vblank; | |
fa00abe0 | 3045 | dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup; |
f71d4af4 JB |
3046 | } else if (HAS_PCH_SPLIT(dev)) { |
3047 | dev->driver->irq_handler = ironlake_irq_handler; | |
3048 | dev->driver->irq_preinstall = ironlake_irq_preinstall; | |
3049 | dev->driver->irq_postinstall = ironlake_irq_postinstall; | |
3050 | dev->driver->irq_uninstall = ironlake_irq_uninstall; | |
3051 | dev->driver->enable_vblank = ironlake_enable_vblank; | |
3052 | dev->driver->disable_vblank = ironlake_disable_vblank; | |
82a28bcf | 3053 | dev_priv->display.hpd_irq_setup = ibx_hpd_irq_setup; |
f71d4af4 | 3054 | } else { |
c2798b19 CW |
3055 | if (INTEL_INFO(dev)->gen == 2) { |
3056 | dev->driver->irq_preinstall = i8xx_irq_preinstall; | |
3057 | dev->driver->irq_postinstall = i8xx_irq_postinstall; | |
3058 | dev->driver->irq_handler = i8xx_irq_handler; | |
3059 | dev->driver->irq_uninstall = i8xx_irq_uninstall; | |
a266c7d5 CW |
3060 | } else if (INTEL_INFO(dev)->gen == 3) { |
3061 | dev->driver->irq_preinstall = i915_irq_preinstall; | |
3062 | dev->driver->irq_postinstall = i915_irq_postinstall; | |
3063 | dev->driver->irq_uninstall = i915_irq_uninstall; | |
3064 | dev->driver->irq_handler = i915_irq_handler; | |
20afbda2 | 3065 | dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup; |
c2798b19 | 3066 | } else { |
a266c7d5 CW |
3067 | dev->driver->irq_preinstall = i965_irq_preinstall; |
3068 | dev->driver->irq_postinstall = i965_irq_postinstall; | |
3069 | dev->driver->irq_uninstall = i965_irq_uninstall; | |
3070 | dev->driver->irq_handler = i965_irq_handler; | |
bac56d5b | 3071 | dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup; |
c2798b19 | 3072 | } |
f71d4af4 JB |
3073 | dev->driver->enable_vblank = i915_enable_vblank; |
3074 | dev->driver->disable_vblank = i915_disable_vblank; | |
3075 | } | |
3076 | } | |
20afbda2 DV |
3077 | |
3078 | void intel_hpd_init(struct drm_device *dev) | |
3079 | { | |
3080 | struct drm_i915_private *dev_priv = dev->dev_private; | |
821450c6 EE |
3081 | struct drm_mode_config *mode_config = &dev->mode_config; |
3082 | struct drm_connector *connector; | |
b5ea2d56 | 3083 | unsigned long irqflags; |
821450c6 | 3084 | int i; |
20afbda2 | 3085 | |
821450c6 EE |
3086 | for (i = 1; i < HPD_NUM_PINS; i++) { |
3087 | dev_priv->hpd_stats[i].hpd_cnt = 0; | |
3088 | dev_priv->hpd_stats[i].hpd_mark = HPD_ENABLED; | |
3089 | } | |
3090 | list_for_each_entry(connector, &mode_config->connector_list, head) { | |
3091 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
3092 | connector->polled = intel_connector->polled; | |
3093 | if (!connector->polled && I915_HAS_HOTPLUG(dev) && intel_connector->encoder->hpd_pin > HPD_NONE) | |
3094 | connector->polled = DRM_CONNECTOR_POLL_HPD; | |
3095 | } | |
b5ea2d56 DV |
3096 | |
3097 | /* Interrupt setup is already guaranteed to be single-threaded, this is | |
3098 | * just to make the assert_spin_locked checks happy. */ | |
3099 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
20afbda2 DV |
3100 | if (dev_priv->display.hpd_irq_setup) |
3101 | dev_priv->display.hpd_irq_setup(dev); | |
b5ea2d56 | 3102 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
20afbda2 | 3103 | } |