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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 | ||
8664281b PZ |
107 | static bool ivb_can_enable_err_int(struct drm_device *dev) |
108 | { | |
109 | struct drm_i915_private *dev_priv = dev->dev_private; | |
110 | struct intel_crtc *crtc; | |
111 | enum pipe pipe; | |
112 | ||
4bc9d430 DV |
113 | assert_spin_locked(&dev_priv->irq_lock); |
114 | ||
8664281b PZ |
115 | for_each_pipe(pipe) { |
116 | crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]); | |
117 | ||
118 | if (crtc->cpu_fifo_underrun_disabled) | |
119 | return false; | |
120 | } | |
121 | ||
122 | return true; | |
123 | } | |
124 | ||
125 | static bool cpt_can_enable_serr_int(struct drm_device *dev) | |
126 | { | |
127 | struct drm_i915_private *dev_priv = dev->dev_private; | |
128 | enum pipe pipe; | |
129 | struct intel_crtc *crtc; | |
130 | ||
131 | for_each_pipe(pipe) { | |
132 | crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]); | |
133 | ||
134 | if (crtc->pch_fifo_underrun_disabled) | |
135 | return false; | |
136 | } | |
137 | ||
138 | return true; | |
139 | } | |
140 | ||
141 | static void ironlake_set_fifo_underrun_reporting(struct drm_device *dev, | |
142 | enum pipe pipe, bool enable) | |
143 | { | |
144 | struct drm_i915_private *dev_priv = dev->dev_private; | |
145 | uint32_t bit = (pipe == PIPE_A) ? DE_PIPEA_FIFO_UNDERRUN : | |
146 | DE_PIPEB_FIFO_UNDERRUN; | |
147 | ||
148 | if (enable) | |
149 | ironlake_enable_display_irq(dev_priv, bit); | |
150 | else | |
151 | ironlake_disable_display_irq(dev_priv, bit); | |
152 | } | |
153 | ||
154 | static void ivybridge_set_fifo_underrun_reporting(struct drm_device *dev, | |
155 | bool enable) | |
156 | { | |
157 | struct drm_i915_private *dev_priv = dev->dev_private; | |
158 | ||
159 | if (enable) { | |
160 | if (!ivb_can_enable_err_int(dev)) | |
161 | return; | |
162 | ||
163 | I915_WRITE(GEN7_ERR_INT, ERR_INT_FIFO_UNDERRUN_A | | |
164 | ERR_INT_FIFO_UNDERRUN_B | | |
165 | ERR_INT_FIFO_UNDERRUN_C); | |
166 | ||
167 | ironlake_enable_display_irq(dev_priv, DE_ERR_INT_IVB); | |
168 | } else { | |
169 | ironlake_disable_display_irq(dev_priv, DE_ERR_INT_IVB); | |
170 | } | |
171 | } | |
172 | ||
173 | static void ibx_set_fifo_underrun_reporting(struct intel_crtc *crtc, | |
174 | bool enable) | |
175 | { | |
176 | struct drm_device *dev = crtc->base.dev; | |
177 | struct drm_i915_private *dev_priv = dev->dev_private; | |
178 | uint32_t bit = (crtc->pipe == PIPE_A) ? SDE_TRANSA_FIFO_UNDER : | |
179 | SDE_TRANSB_FIFO_UNDER; | |
180 | ||
181 | if (enable) | |
182 | I915_WRITE(SDEIMR, I915_READ(SDEIMR) & ~bit); | |
183 | else | |
184 | I915_WRITE(SDEIMR, I915_READ(SDEIMR) | bit); | |
185 | ||
186 | POSTING_READ(SDEIMR); | |
187 | } | |
188 | ||
189 | static void cpt_set_fifo_underrun_reporting(struct drm_device *dev, | |
190 | enum transcoder pch_transcoder, | |
191 | bool enable) | |
192 | { | |
193 | struct drm_i915_private *dev_priv = dev->dev_private; | |
194 | ||
195 | if (enable) { | |
196 | if (!cpt_can_enable_serr_int(dev)) | |
197 | return; | |
198 | ||
199 | I915_WRITE(SERR_INT, SERR_INT_TRANS_A_FIFO_UNDERRUN | | |
200 | SERR_INT_TRANS_B_FIFO_UNDERRUN | | |
201 | SERR_INT_TRANS_C_FIFO_UNDERRUN); | |
202 | ||
203 | I915_WRITE(SDEIMR, I915_READ(SDEIMR) & ~SDE_ERROR_CPT); | |
204 | } else { | |
205 | I915_WRITE(SDEIMR, I915_READ(SDEIMR) | SDE_ERROR_CPT); | |
206 | } | |
207 | ||
208 | POSTING_READ(SDEIMR); | |
209 | } | |
210 | ||
211 | /** | |
212 | * intel_set_cpu_fifo_underrun_reporting - enable/disable FIFO underrun messages | |
213 | * @dev: drm device | |
214 | * @pipe: pipe | |
215 | * @enable: true if we want to report FIFO underrun errors, false otherwise | |
216 | * | |
217 | * This function makes us disable or enable CPU fifo underruns for a specific | |
218 | * pipe. Notice that on some Gens (e.g. IVB, HSW), disabling FIFO underrun | |
219 | * reporting for one pipe may also disable all the other CPU error interruts for | |
220 | * the other pipes, due to the fact that there's just one interrupt mask/enable | |
221 | * bit for all the pipes. | |
222 | * | |
223 | * Returns the previous state of underrun reporting. | |
224 | */ | |
225 | bool intel_set_cpu_fifo_underrun_reporting(struct drm_device *dev, | |
226 | enum pipe pipe, bool enable) | |
227 | { | |
228 | struct drm_i915_private *dev_priv = dev->dev_private; | |
229 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
230 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
231 | unsigned long flags; | |
232 | bool ret; | |
233 | ||
234 | spin_lock_irqsave(&dev_priv->irq_lock, flags); | |
235 | ||
236 | ret = !intel_crtc->cpu_fifo_underrun_disabled; | |
237 | ||
238 | if (enable == ret) | |
239 | goto done; | |
240 | ||
241 | intel_crtc->cpu_fifo_underrun_disabled = !enable; | |
242 | ||
243 | if (IS_GEN5(dev) || IS_GEN6(dev)) | |
244 | ironlake_set_fifo_underrun_reporting(dev, pipe, enable); | |
245 | else if (IS_GEN7(dev)) | |
246 | ivybridge_set_fifo_underrun_reporting(dev, enable); | |
247 | ||
248 | done: | |
249 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); | |
250 | return ret; | |
251 | } | |
252 | ||
253 | /** | |
254 | * intel_set_pch_fifo_underrun_reporting - enable/disable FIFO underrun messages | |
255 | * @dev: drm device | |
256 | * @pch_transcoder: the PCH transcoder (same as pipe on IVB and older) | |
257 | * @enable: true if we want to report FIFO underrun errors, false otherwise | |
258 | * | |
259 | * This function makes us disable or enable PCH fifo underruns for a specific | |
260 | * PCH transcoder. Notice that on some PCHs (e.g. CPT/PPT), disabling FIFO | |
261 | * underrun reporting for one transcoder may also disable all the other PCH | |
262 | * error interruts for the other transcoders, due to the fact that there's just | |
263 | * one interrupt mask/enable bit for all the transcoders. | |
264 | * | |
265 | * Returns the previous state of underrun reporting. | |
266 | */ | |
267 | bool intel_set_pch_fifo_underrun_reporting(struct drm_device *dev, | |
268 | enum transcoder pch_transcoder, | |
269 | bool enable) | |
270 | { | |
271 | struct drm_i915_private *dev_priv = dev->dev_private; | |
272 | enum pipe p; | |
273 | struct drm_crtc *crtc; | |
274 | struct intel_crtc *intel_crtc; | |
275 | unsigned long flags; | |
276 | bool ret; | |
277 | ||
278 | if (HAS_PCH_LPT(dev)) { | |
279 | crtc = NULL; | |
280 | for_each_pipe(p) { | |
281 | struct drm_crtc *c = dev_priv->pipe_to_crtc_mapping[p]; | |
282 | if (intel_pipe_has_type(c, INTEL_OUTPUT_ANALOG)) { | |
283 | crtc = c; | |
284 | break; | |
285 | } | |
286 | } | |
287 | if (!crtc) { | |
288 | DRM_ERROR("PCH FIFO underrun, but no CRTC using the PCH found\n"); | |
289 | return false; | |
290 | } | |
291 | } else { | |
292 | crtc = dev_priv->pipe_to_crtc_mapping[pch_transcoder]; | |
293 | } | |
294 | intel_crtc = to_intel_crtc(crtc); | |
295 | ||
296 | spin_lock_irqsave(&dev_priv->irq_lock, flags); | |
297 | ||
298 | ret = !intel_crtc->pch_fifo_underrun_disabled; | |
299 | ||
300 | if (enable == ret) | |
301 | goto done; | |
302 | ||
303 | intel_crtc->pch_fifo_underrun_disabled = !enable; | |
304 | ||
305 | if (HAS_PCH_IBX(dev)) | |
306 | ibx_set_fifo_underrun_reporting(intel_crtc, enable); | |
307 | else | |
308 | cpt_set_fifo_underrun_reporting(dev, pch_transcoder, enable); | |
309 | ||
310 | done: | |
311 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); | |
312 | return ret; | |
313 | } | |
314 | ||
315 | ||
7c463586 KP |
316 | void |
317 | i915_enable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask) | |
318 | { | |
46c06a30 VS |
319 | u32 reg = PIPESTAT(pipe); |
320 | u32 pipestat = I915_READ(reg) & 0x7fff0000; | |
7c463586 | 321 | |
b79480ba DV |
322 | assert_spin_locked(&dev_priv->irq_lock); |
323 | ||
46c06a30 VS |
324 | if ((pipestat & mask) == mask) |
325 | return; | |
326 | ||
327 | /* Enable the interrupt, clear any pending status */ | |
328 | pipestat |= mask | (mask >> 16); | |
329 | I915_WRITE(reg, pipestat); | |
330 | POSTING_READ(reg); | |
7c463586 KP |
331 | } |
332 | ||
333 | void | |
334 | i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask) | |
335 | { | |
46c06a30 VS |
336 | u32 reg = PIPESTAT(pipe); |
337 | u32 pipestat = I915_READ(reg) & 0x7fff0000; | |
7c463586 | 338 | |
b79480ba DV |
339 | assert_spin_locked(&dev_priv->irq_lock); |
340 | ||
46c06a30 VS |
341 | if ((pipestat & mask) == 0) |
342 | return; | |
343 | ||
344 | pipestat &= ~mask; | |
345 | I915_WRITE(reg, pipestat); | |
346 | POSTING_READ(reg); | |
7c463586 KP |
347 | } |
348 | ||
01c66889 | 349 | /** |
f49e38dd | 350 | * i915_enable_asle_pipestat - enable ASLE pipestat for OpRegion |
01c66889 | 351 | */ |
f49e38dd | 352 | static void i915_enable_asle_pipestat(struct drm_device *dev) |
01c66889 | 353 | { |
1ec14ad3 CW |
354 | drm_i915_private_t *dev_priv = dev->dev_private; |
355 | unsigned long irqflags; | |
356 | ||
f49e38dd JN |
357 | if (!dev_priv->opregion.asle || !IS_MOBILE(dev)) |
358 | return; | |
359 | ||
1ec14ad3 | 360 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
01c66889 | 361 | |
f898780b JN |
362 | i915_enable_pipestat(dev_priv, 1, PIPE_LEGACY_BLC_EVENT_ENABLE); |
363 | if (INTEL_INFO(dev)->gen >= 4) | |
364 | i915_enable_pipestat(dev_priv, 0, PIPE_LEGACY_BLC_EVENT_ENABLE); | |
1ec14ad3 CW |
365 | |
366 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
01c66889 ZY |
367 | } |
368 | ||
0a3e67a4 JB |
369 | /** |
370 | * i915_pipe_enabled - check if a pipe is enabled | |
371 | * @dev: DRM device | |
372 | * @pipe: pipe to check | |
373 | * | |
374 | * Reading certain registers when the pipe is disabled can hang the chip. | |
375 | * Use this routine to make sure the PLL is running and the pipe is active | |
376 | * before reading such registers if unsure. | |
377 | */ | |
378 | static int | |
379 | i915_pipe_enabled(struct drm_device *dev, int pipe) | |
380 | { | |
381 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
702e7a56 | 382 | |
a01025af DV |
383 | if (drm_core_check_feature(dev, DRIVER_MODESET)) { |
384 | /* Locking is horribly broken here, but whatever. */ | |
385 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
386 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
71f8ba6b | 387 | |
a01025af DV |
388 | return intel_crtc->active; |
389 | } else { | |
390 | return I915_READ(PIPECONF(pipe)) & PIPECONF_ENABLE; | |
391 | } | |
0a3e67a4 JB |
392 | } |
393 | ||
42f52ef8 KP |
394 | /* Called from drm generic code, passed a 'crtc', which |
395 | * we use as a pipe index | |
396 | */ | |
f71d4af4 | 397 | static u32 i915_get_vblank_counter(struct drm_device *dev, int pipe) |
0a3e67a4 JB |
398 | { |
399 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
400 | unsigned long high_frame; | |
401 | unsigned long low_frame; | |
5eddb70b | 402 | u32 high1, high2, low; |
0a3e67a4 JB |
403 | |
404 | if (!i915_pipe_enabled(dev, pipe)) { | |
44d98a61 | 405 | DRM_DEBUG_DRIVER("trying to get vblank count for disabled " |
9db4a9c7 | 406 | "pipe %c\n", pipe_name(pipe)); |
0a3e67a4 JB |
407 | return 0; |
408 | } | |
409 | ||
9db4a9c7 JB |
410 | high_frame = PIPEFRAME(pipe); |
411 | low_frame = PIPEFRAMEPIXEL(pipe); | |
5eddb70b | 412 | |
0a3e67a4 JB |
413 | /* |
414 | * High & low register fields aren't synchronized, so make sure | |
415 | * we get a low value that's stable across two reads of the high | |
416 | * register. | |
417 | */ | |
418 | do { | |
5eddb70b CW |
419 | high1 = I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK; |
420 | low = I915_READ(low_frame) & PIPE_FRAME_LOW_MASK; | |
421 | high2 = I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK; | |
0a3e67a4 JB |
422 | } while (high1 != high2); |
423 | ||
5eddb70b CW |
424 | high1 >>= PIPE_FRAME_HIGH_SHIFT; |
425 | low >>= PIPE_FRAME_LOW_SHIFT; | |
426 | return (high1 << 8) | low; | |
0a3e67a4 JB |
427 | } |
428 | ||
f71d4af4 | 429 | static u32 gm45_get_vblank_counter(struct drm_device *dev, int pipe) |
9880b7a5 JB |
430 | { |
431 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
9db4a9c7 | 432 | int reg = PIPE_FRMCOUNT_GM45(pipe); |
9880b7a5 JB |
433 | |
434 | if (!i915_pipe_enabled(dev, pipe)) { | |
44d98a61 | 435 | DRM_DEBUG_DRIVER("trying to get vblank count for disabled " |
9db4a9c7 | 436 | "pipe %c\n", pipe_name(pipe)); |
9880b7a5 JB |
437 | return 0; |
438 | } | |
439 | ||
440 | return I915_READ(reg); | |
441 | } | |
442 | ||
f71d4af4 | 443 | static int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe, |
0af7e4df MK |
444 | int *vpos, int *hpos) |
445 | { | |
446 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
447 | u32 vbl = 0, position = 0; | |
448 | int vbl_start, vbl_end, htotal, vtotal; | |
449 | bool in_vbl = true; | |
450 | int ret = 0; | |
fe2b8f9d PZ |
451 | enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv, |
452 | pipe); | |
0af7e4df MK |
453 | |
454 | if (!i915_pipe_enabled(dev, pipe)) { | |
455 | DRM_DEBUG_DRIVER("trying to get scanoutpos for disabled " | |
9db4a9c7 | 456 | "pipe %c\n", pipe_name(pipe)); |
0af7e4df MK |
457 | return 0; |
458 | } | |
459 | ||
460 | /* Get vtotal. */ | |
fe2b8f9d | 461 | vtotal = 1 + ((I915_READ(VTOTAL(cpu_transcoder)) >> 16) & 0x1fff); |
0af7e4df MK |
462 | |
463 | if (INTEL_INFO(dev)->gen >= 4) { | |
464 | /* No obvious pixelcount register. Only query vertical | |
465 | * scanout position from Display scan line register. | |
466 | */ | |
467 | position = I915_READ(PIPEDSL(pipe)); | |
468 | ||
469 | /* Decode into vertical scanout position. Don't have | |
470 | * horizontal scanout position. | |
471 | */ | |
472 | *vpos = position & 0x1fff; | |
473 | *hpos = 0; | |
474 | } else { | |
475 | /* Have access to pixelcount since start of frame. | |
476 | * We can split this into vertical and horizontal | |
477 | * scanout position. | |
478 | */ | |
479 | position = (I915_READ(PIPEFRAMEPIXEL(pipe)) & PIPE_PIXEL_MASK) >> PIPE_PIXEL_SHIFT; | |
480 | ||
fe2b8f9d | 481 | htotal = 1 + ((I915_READ(HTOTAL(cpu_transcoder)) >> 16) & 0x1fff); |
0af7e4df MK |
482 | *vpos = position / htotal; |
483 | *hpos = position - (*vpos * htotal); | |
484 | } | |
485 | ||
486 | /* Query vblank area. */ | |
fe2b8f9d | 487 | vbl = I915_READ(VBLANK(cpu_transcoder)); |
0af7e4df MK |
488 | |
489 | /* Test position against vblank region. */ | |
490 | vbl_start = vbl & 0x1fff; | |
491 | vbl_end = (vbl >> 16) & 0x1fff; | |
492 | ||
493 | if ((*vpos < vbl_start) || (*vpos > vbl_end)) | |
494 | in_vbl = false; | |
495 | ||
496 | /* Inside "upper part" of vblank area? Apply corrective offset: */ | |
497 | if (in_vbl && (*vpos >= vbl_start)) | |
498 | *vpos = *vpos - vtotal; | |
499 | ||
500 | /* Readouts valid? */ | |
501 | if (vbl > 0) | |
502 | ret |= DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE; | |
503 | ||
504 | /* In vblank? */ | |
505 | if (in_vbl) | |
506 | ret |= DRM_SCANOUTPOS_INVBL; | |
507 | ||
508 | return ret; | |
509 | } | |
510 | ||
f71d4af4 | 511 | static int i915_get_vblank_timestamp(struct drm_device *dev, int pipe, |
0af7e4df MK |
512 | int *max_error, |
513 | struct timeval *vblank_time, | |
514 | unsigned flags) | |
515 | { | |
4041b853 | 516 | struct drm_crtc *crtc; |
0af7e4df | 517 | |
7eb552ae | 518 | if (pipe < 0 || pipe >= INTEL_INFO(dev)->num_pipes) { |
4041b853 | 519 | DRM_ERROR("Invalid crtc %d\n", pipe); |
0af7e4df MK |
520 | return -EINVAL; |
521 | } | |
522 | ||
523 | /* Get drm_crtc to timestamp: */ | |
4041b853 CW |
524 | crtc = intel_get_crtc_for_pipe(dev, pipe); |
525 | if (crtc == NULL) { | |
526 | DRM_ERROR("Invalid crtc %d\n", pipe); | |
527 | return -EINVAL; | |
528 | } | |
529 | ||
530 | if (!crtc->enabled) { | |
531 | DRM_DEBUG_KMS("crtc %d is disabled\n", pipe); | |
532 | return -EBUSY; | |
533 | } | |
0af7e4df MK |
534 | |
535 | /* Helper routine in DRM core does all the work: */ | |
4041b853 CW |
536 | return drm_calc_vbltimestamp_from_scanoutpos(dev, pipe, max_error, |
537 | vblank_time, flags, | |
538 | crtc); | |
0af7e4df MK |
539 | } |
540 | ||
321a1b30 EE |
541 | static int intel_hpd_irq_event(struct drm_device *dev, struct drm_connector *connector) |
542 | { | |
543 | enum drm_connector_status old_status; | |
544 | ||
545 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); | |
546 | old_status = connector->status; | |
547 | ||
548 | connector->status = connector->funcs->detect(connector, false); | |
549 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", | |
550 | connector->base.id, | |
551 | drm_get_connector_name(connector), | |
552 | old_status, connector->status); | |
553 | return (old_status != connector->status); | |
554 | } | |
555 | ||
5ca58282 JB |
556 | /* |
557 | * Handle hotplug events outside the interrupt handler proper. | |
558 | */ | |
ac4c16c5 EE |
559 | #define I915_REENABLE_HOTPLUG_DELAY (2*60*1000) |
560 | ||
5ca58282 JB |
561 | static void i915_hotplug_work_func(struct work_struct *work) |
562 | { | |
563 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, | |
564 | hotplug_work); | |
565 | struct drm_device *dev = dev_priv->dev; | |
c31c4ba3 | 566 | struct drm_mode_config *mode_config = &dev->mode_config; |
cd569aed EE |
567 | struct intel_connector *intel_connector; |
568 | struct intel_encoder *intel_encoder; | |
569 | struct drm_connector *connector; | |
570 | unsigned long irqflags; | |
571 | bool hpd_disabled = false; | |
321a1b30 | 572 | bool changed = false; |
142e2398 | 573 | u32 hpd_event_bits; |
4ef69c7a | 574 | |
52d7eced DV |
575 | /* HPD irq before everything is fully set up. */ |
576 | if (!dev_priv->enable_hotplug_processing) | |
577 | return; | |
578 | ||
a65e34c7 | 579 | mutex_lock(&mode_config->mutex); |
e67189ab JB |
580 | DRM_DEBUG_KMS("running encoder hotplug functions\n"); |
581 | ||
cd569aed | 582 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
142e2398 EE |
583 | |
584 | hpd_event_bits = dev_priv->hpd_event_bits; | |
585 | dev_priv->hpd_event_bits = 0; | |
cd569aed EE |
586 | list_for_each_entry(connector, &mode_config->connector_list, head) { |
587 | intel_connector = to_intel_connector(connector); | |
588 | intel_encoder = intel_connector->encoder; | |
589 | if (intel_encoder->hpd_pin > HPD_NONE && | |
590 | dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_MARK_DISABLED && | |
591 | connector->polled == DRM_CONNECTOR_POLL_HPD) { | |
592 | DRM_INFO("HPD interrupt storm detected on connector %s: " | |
593 | "switching from hotplug detection to polling\n", | |
594 | drm_get_connector_name(connector)); | |
595 | dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark = HPD_DISABLED; | |
596 | connector->polled = DRM_CONNECTOR_POLL_CONNECT | |
597 | | DRM_CONNECTOR_POLL_DISCONNECT; | |
598 | hpd_disabled = true; | |
599 | } | |
142e2398 EE |
600 | if (hpd_event_bits & (1 << intel_encoder->hpd_pin)) { |
601 | DRM_DEBUG_KMS("Connector %s (pin %i) received hotplug event.\n", | |
602 | drm_get_connector_name(connector), intel_encoder->hpd_pin); | |
603 | } | |
cd569aed EE |
604 | } |
605 | /* if there were no outputs to poll, poll was disabled, | |
606 | * therefore make sure it's enabled when disabling HPD on | |
607 | * some connectors */ | |
ac4c16c5 | 608 | if (hpd_disabled) { |
cd569aed | 609 | drm_kms_helper_poll_enable(dev); |
ac4c16c5 EE |
610 | mod_timer(&dev_priv->hotplug_reenable_timer, |
611 | jiffies + msecs_to_jiffies(I915_REENABLE_HOTPLUG_DELAY)); | |
612 | } | |
cd569aed EE |
613 | |
614 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
615 | ||
321a1b30 EE |
616 | list_for_each_entry(connector, &mode_config->connector_list, head) { |
617 | intel_connector = to_intel_connector(connector); | |
618 | intel_encoder = intel_connector->encoder; | |
619 | if (hpd_event_bits & (1 << intel_encoder->hpd_pin)) { | |
620 | if (intel_encoder->hot_plug) | |
621 | intel_encoder->hot_plug(intel_encoder); | |
622 | if (intel_hpd_irq_event(dev, connector)) | |
623 | changed = true; | |
624 | } | |
625 | } | |
40ee3381 KP |
626 | mutex_unlock(&mode_config->mutex); |
627 | ||
321a1b30 EE |
628 | if (changed) |
629 | drm_kms_helper_hotplug_event(dev); | |
5ca58282 JB |
630 | } |
631 | ||
73edd18f | 632 | static void ironlake_handle_rps_change(struct drm_device *dev) |
f97108d1 JB |
633 | { |
634 | drm_i915_private_t *dev_priv = dev->dev_private; | |
b5b72e89 | 635 | u32 busy_up, busy_down, max_avg, min_avg; |
9270388e DV |
636 | u8 new_delay; |
637 | unsigned long flags; | |
638 | ||
639 | spin_lock_irqsave(&mchdev_lock, flags); | |
f97108d1 | 640 | |
73edd18f DV |
641 | I915_WRITE16(MEMINTRSTS, I915_READ(MEMINTRSTS)); |
642 | ||
20e4d407 | 643 | new_delay = dev_priv->ips.cur_delay; |
9270388e | 644 | |
7648fa99 | 645 | I915_WRITE16(MEMINTRSTS, MEMINT_EVAL_CHG); |
b5b72e89 MG |
646 | busy_up = I915_READ(RCPREVBSYTUPAVG); |
647 | busy_down = I915_READ(RCPREVBSYTDNAVG); | |
f97108d1 JB |
648 | max_avg = I915_READ(RCBMAXAVG); |
649 | min_avg = I915_READ(RCBMINAVG); | |
650 | ||
651 | /* Handle RCS change request from hw */ | |
b5b72e89 | 652 | if (busy_up > max_avg) { |
20e4d407 DV |
653 | if (dev_priv->ips.cur_delay != dev_priv->ips.max_delay) |
654 | new_delay = dev_priv->ips.cur_delay - 1; | |
655 | if (new_delay < dev_priv->ips.max_delay) | |
656 | new_delay = dev_priv->ips.max_delay; | |
b5b72e89 | 657 | } else if (busy_down < min_avg) { |
20e4d407 DV |
658 | if (dev_priv->ips.cur_delay != dev_priv->ips.min_delay) |
659 | new_delay = dev_priv->ips.cur_delay + 1; | |
660 | if (new_delay > dev_priv->ips.min_delay) | |
661 | new_delay = dev_priv->ips.min_delay; | |
f97108d1 JB |
662 | } |
663 | ||
7648fa99 | 664 | if (ironlake_set_drps(dev, new_delay)) |
20e4d407 | 665 | dev_priv->ips.cur_delay = new_delay; |
f97108d1 | 666 | |
9270388e DV |
667 | spin_unlock_irqrestore(&mchdev_lock, flags); |
668 | ||
f97108d1 JB |
669 | return; |
670 | } | |
671 | ||
549f7365 CW |
672 | static void notify_ring(struct drm_device *dev, |
673 | struct intel_ring_buffer *ring) | |
674 | { | |
675 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9862e600 | 676 | |
475553de CW |
677 | if (ring->obj == NULL) |
678 | return; | |
679 | ||
b2eadbc8 | 680 | trace_i915_gem_request_complete(ring, ring->get_seqno(ring, false)); |
9862e600 | 681 | |
549f7365 | 682 | wake_up_all(&ring->irq_queue); |
3e0dc6b0 | 683 | if (i915_enable_hangcheck) { |
99584db3 | 684 | mod_timer(&dev_priv->gpu_error.hangcheck_timer, |
cecc21fe | 685 | round_jiffies_up(jiffies + DRM_I915_HANGCHECK_JIFFIES)); |
3e0dc6b0 | 686 | } |
549f7365 CW |
687 | } |
688 | ||
4912d041 | 689 | static void gen6_pm_rps_work(struct work_struct *work) |
3b8d8d91 | 690 | { |
4912d041 | 691 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, |
c6a828d3 | 692 | rps.work); |
4912d041 | 693 | u32 pm_iir, pm_imr; |
7b9e0ae6 | 694 | u8 new_delay; |
4912d041 | 695 | |
c6a828d3 DV |
696 | spin_lock_irq(&dev_priv->rps.lock); |
697 | pm_iir = dev_priv->rps.pm_iir; | |
698 | dev_priv->rps.pm_iir = 0; | |
4912d041 | 699 | pm_imr = I915_READ(GEN6_PMIMR); |
4848405c BW |
700 | /* Make sure not to corrupt PMIMR state used by ringbuffer code */ |
701 | I915_WRITE(GEN6_PMIMR, pm_imr & ~GEN6_PM_RPS_EVENTS); | |
c6a828d3 | 702 | spin_unlock_irq(&dev_priv->rps.lock); |
3b8d8d91 | 703 | |
4848405c | 704 | if ((pm_iir & GEN6_PM_RPS_EVENTS) == 0) |
3b8d8d91 JB |
705 | return; |
706 | ||
4fc688ce | 707 | mutex_lock(&dev_priv->rps.hw_lock); |
7b9e0ae6 | 708 | |
7425034a | 709 | if (pm_iir & GEN6_PM_RP_UP_THRESHOLD) { |
c6a828d3 | 710 | new_delay = dev_priv->rps.cur_delay + 1; |
7425034a VS |
711 | |
712 | /* | |
713 | * For better performance, jump directly | |
714 | * to RPe if we're below it. | |
715 | */ | |
716 | if (IS_VALLEYVIEW(dev_priv->dev) && | |
717 | dev_priv->rps.cur_delay < dev_priv->rps.rpe_delay) | |
718 | new_delay = dev_priv->rps.rpe_delay; | |
719 | } else | |
c6a828d3 | 720 | new_delay = dev_priv->rps.cur_delay - 1; |
3b8d8d91 | 721 | |
79249636 BW |
722 | /* sysfs frequency interfaces may have snuck in while servicing the |
723 | * interrupt | |
724 | */ | |
d8289c9e VS |
725 | if (new_delay >= dev_priv->rps.min_delay && |
726 | new_delay <= dev_priv->rps.max_delay) { | |
0a073b84 JB |
727 | if (IS_VALLEYVIEW(dev_priv->dev)) |
728 | valleyview_set_rps(dev_priv->dev, new_delay); | |
729 | else | |
730 | gen6_set_rps(dev_priv->dev, new_delay); | |
79249636 | 731 | } |
3b8d8d91 | 732 | |
52ceb908 JB |
733 | if (IS_VALLEYVIEW(dev_priv->dev)) { |
734 | /* | |
735 | * On VLV, when we enter RC6 we may not be at the minimum | |
736 | * voltage level, so arm a timer to check. It should only | |
737 | * fire when there's activity or once after we've entered | |
738 | * RC6, and then won't be re-armed until the next RPS interrupt. | |
739 | */ | |
740 | mod_delayed_work(dev_priv->wq, &dev_priv->rps.vlv_work, | |
741 | msecs_to_jiffies(100)); | |
742 | } | |
743 | ||
4fc688ce | 744 | mutex_unlock(&dev_priv->rps.hw_lock); |
3b8d8d91 JB |
745 | } |
746 | ||
e3689190 BW |
747 | |
748 | /** | |
749 | * ivybridge_parity_work - Workqueue called when a parity error interrupt | |
750 | * occurred. | |
751 | * @work: workqueue struct | |
752 | * | |
753 | * Doesn't actually do anything except notify userspace. As a consequence of | |
754 | * this event, userspace should try to remap the bad rows since statistically | |
755 | * it is likely the same row is more likely to go bad again. | |
756 | */ | |
757 | static void ivybridge_parity_work(struct work_struct *work) | |
758 | { | |
759 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, | |
a4da4fa4 | 760 | l3_parity.error_work); |
e3689190 BW |
761 | u32 error_status, row, bank, subbank; |
762 | char *parity_event[5]; | |
763 | uint32_t misccpctl; | |
764 | unsigned long flags; | |
765 | ||
766 | /* We must turn off DOP level clock gating to access the L3 registers. | |
767 | * In order to prevent a get/put style interface, acquire struct mutex | |
768 | * any time we access those registers. | |
769 | */ | |
770 | mutex_lock(&dev_priv->dev->struct_mutex); | |
771 | ||
772 | misccpctl = I915_READ(GEN7_MISCCPCTL); | |
773 | I915_WRITE(GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE); | |
774 | POSTING_READ(GEN7_MISCCPCTL); | |
775 | ||
776 | error_status = I915_READ(GEN7_L3CDERRST1); | |
777 | row = GEN7_PARITY_ERROR_ROW(error_status); | |
778 | bank = GEN7_PARITY_ERROR_BANK(error_status); | |
779 | subbank = GEN7_PARITY_ERROR_SUBBANK(error_status); | |
780 | ||
781 | I915_WRITE(GEN7_L3CDERRST1, GEN7_PARITY_ERROR_VALID | | |
782 | GEN7_L3CDERRST1_ENABLE); | |
783 | POSTING_READ(GEN7_L3CDERRST1); | |
784 | ||
785 | I915_WRITE(GEN7_MISCCPCTL, misccpctl); | |
786 | ||
787 | spin_lock_irqsave(&dev_priv->irq_lock, flags); | |
cc609d5d | 788 | dev_priv->gt_irq_mask &= ~GT_RENDER_L3_PARITY_ERROR_INTERRUPT; |
e3689190 BW |
789 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); |
790 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); | |
791 | ||
792 | mutex_unlock(&dev_priv->dev->struct_mutex); | |
793 | ||
794 | parity_event[0] = "L3_PARITY_ERROR=1"; | |
795 | parity_event[1] = kasprintf(GFP_KERNEL, "ROW=%d", row); | |
796 | parity_event[2] = kasprintf(GFP_KERNEL, "BANK=%d", bank); | |
797 | parity_event[3] = kasprintf(GFP_KERNEL, "SUBBANK=%d", subbank); | |
798 | parity_event[4] = NULL; | |
799 | ||
800 | kobject_uevent_env(&dev_priv->dev->primary->kdev.kobj, | |
801 | KOBJ_CHANGE, parity_event); | |
802 | ||
803 | DRM_DEBUG("Parity error: Row = %d, Bank = %d, Sub bank = %d.\n", | |
804 | row, bank, subbank); | |
805 | ||
806 | kfree(parity_event[3]); | |
807 | kfree(parity_event[2]); | |
808 | kfree(parity_event[1]); | |
809 | } | |
810 | ||
d2ba8470 | 811 | static void ivybridge_handle_parity_error(struct drm_device *dev) |
e3689190 BW |
812 | { |
813 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
814 | unsigned long flags; | |
815 | ||
e1ef7cc2 | 816 | if (!HAS_L3_GPU_CACHE(dev)) |
e3689190 BW |
817 | return; |
818 | ||
819 | spin_lock_irqsave(&dev_priv->irq_lock, flags); | |
cc609d5d | 820 | dev_priv->gt_irq_mask |= GT_RENDER_L3_PARITY_ERROR_INTERRUPT; |
e3689190 BW |
821 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); |
822 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); | |
823 | ||
a4da4fa4 | 824 | queue_work(dev_priv->wq, &dev_priv->l3_parity.error_work); |
e3689190 BW |
825 | } |
826 | ||
e7b4c6b1 DV |
827 | static void snb_gt_irq_handler(struct drm_device *dev, |
828 | struct drm_i915_private *dev_priv, | |
829 | u32 gt_iir) | |
830 | { | |
831 | ||
cc609d5d BW |
832 | if (gt_iir & |
833 | (GT_RENDER_USER_INTERRUPT | GT_RENDER_PIPECTL_NOTIFY_INTERRUPT)) | |
e7b4c6b1 | 834 | notify_ring(dev, &dev_priv->ring[RCS]); |
cc609d5d | 835 | if (gt_iir & GT_BSD_USER_INTERRUPT) |
e7b4c6b1 | 836 | notify_ring(dev, &dev_priv->ring[VCS]); |
cc609d5d | 837 | if (gt_iir & GT_BLT_USER_INTERRUPT) |
e7b4c6b1 DV |
838 | notify_ring(dev, &dev_priv->ring[BCS]); |
839 | ||
cc609d5d BW |
840 | if (gt_iir & (GT_BLT_CS_ERROR_INTERRUPT | |
841 | GT_BSD_CS_ERROR_INTERRUPT | | |
842 | GT_RENDER_CS_MASTER_ERROR_INTERRUPT)) { | |
e7b4c6b1 DV |
843 | DRM_ERROR("GT error interrupt 0x%08x\n", gt_iir); |
844 | i915_handle_error(dev, false); | |
845 | } | |
e3689190 | 846 | |
cc609d5d | 847 | if (gt_iir & GT_RENDER_L3_PARITY_ERROR_INTERRUPT) |
e3689190 | 848 | ivybridge_handle_parity_error(dev); |
e7b4c6b1 DV |
849 | } |
850 | ||
baf02a1f | 851 | /* Legacy way of handling PM interrupts */ |
fc6826d1 CW |
852 | static void gen6_queue_rps_work(struct drm_i915_private *dev_priv, |
853 | u32 pm_iir) | |
854 | { | |
855 | unsigned long flags; | |
856 | ||
857 | /* | |
858 | * IIR bits should never already be set because IMR should | |
859 | * prevent an interrupt from being shown in IIR. The warning | |
860 | * displays a case where we've unsafely cleared | |
c6a828d3 | 861 | * dev_priv->rps.pm_iir. Although missing an interrupt of the same |
fc6826d1 CW |
862 | * type is not a problem, it displays a problem in the logic. |
863 | * | |
c6a828d3 | 864 | * The mask bit in IMR is cleared by dev_priv->rps.work. |
fc6826d1 CW |
865 | */ |
866 | ||
c6a828d3 | 867 | spin_lock_irqsave(&dev_priv->rps.lock, flags); |
c6a828d3 DV |
868 | dev_priv->rps.pm_iir |= pm_iir; |
869 | I915_WRITE(GEN6_PMIMR, dev_priv->rps.pm_iir); | |
fc6826d1 | 870 | POSTING_READ(GEN6_PMIMR); |
c6a828d3 | 871 | spin_unlock_irqrestore(&dev_priv->rps.lock, flags); |
fc6826d1 | 872 | |
c6a828d3 | 873 | queue_work(dev_priv->wq, &dev_priv->rps.work); |
fc6826d1 CW |
874 | } |
875 | ||
b543fb04 EE |
876 | #define HPD_STORM_DETECT_PERIOD 1000 |
877 | #define HPD_STORM_THRESHOLD 5 | |
878 | ||
10a504de | 879 | static inline void intel_hpd_irq_handler(struct drm_device *dev, |
22062dba DV |
880 | u32 hotplug_trigger, |
881 | const u32 *hpd) | |
b543fb04 EE |
882 | { |
883 | drm_i915_private_t *dev_priv = dev->dev_private; | |
b543fb04 | 884 | int i; |
10a504de | 885 | bool storm_detected = false; |
b543fb04 | 886 | |
91d131d2 DV |
887 | if (!hotplug_trigger) |
888 | return; | |
889 | ||
b5ea2d56 | 890 | spin_lock(&dev_priv->irq_lock); |
b543fb04 | 891 | for (i = 1; i < HPD_NUM_PINS; i++) { |
821450c6 | 892 | |
b543fb04 EE |
893 | if (!(hpd[i] & hotplug_trigger) || |
894 | dev_priv->hpd_stats[i].hpd_mark != HPD_ENABLED) | |
895 | continue; | |
896 | ||
bc5ead8c | 897 | dev_priv->hpd_event_bits |= (1 << i); |
b543fb04 EE |
898 | if (!time_in_range(jiffies, dev_priv->hpd_stats[i].hpd_last_jiffies, |
899 | dev_priv->hpd_stats[i].hpd_last_jiffies | |
900 | + msecs_to_jiffies(HPD_STORM_DETECT_PERIOD))) { | |
901 | dev_priv->hpd_stats[i].hpd_last_jiffies = jiffies; | |
902 | dev_priv->hpd_stats[i].hpd_cnt = 0; | |
903 | } else if (dev_priv->hpd_stats[i].hpd_cnt > HPD_STORM_THRESHOLD) { | |
904 | dev_priv->hpd_stats[i].hpd_mark = HPD_MARK_DISABLED; | |
142e2398 | 905 | dev_priv->hpd_event_bits &= ~(1 << i); |
b543fb04 | 906 | DRM_DEBUG_KMS("HPD interrupt storm detected on PIN %d\n", i); |
10a504de | 907 | storm_detected = true; |
b543fb04 EE |
908 | } else { |
909 | dev_priv->hpd_stats[i].hpd_cnt++; | |
910 | } | |
911 | } | |
912 | ||
10a504de DV |
913 | if (storm_detected) |
914 | dev_priv->display.hpd_irq_setup(dev); | |
b5ea2d56 | 915 | spin_unlock(&dev_priv->irq_lock); |
5876fa0d DV |
916 | |
917 | queue_work(dev_priv->wq, | |
918 | &dev_priv->hotplug_work); | |
b543fb04 EE |
919 | } |
920 | ||
515ac2bb DV |
921 | static void gmbus_irq_handler(struct drm_device *dev) |
922 | { | |
28c70f16 DV |
923 | struct drm_i915_private *dev_priv = (drm_i915_private_t *) dev->dev_private; |
924 | ||
28c70f16 | 925 | wake_up_all(&dev_priv->gmbus_wait_queue); |
515ac2bb DV |
926 | } |
927 | ||
ce99c256 DV |
928 | static void dp_aux_irq_handler(struct drm_device *dev) |
929 | { | |
9ee32fea DV |
930 | struct drm_i915_private *dev_priv = (drm_i915_private_t *) dev->dev_private; |
931 | ||
9ee32fea | 932 | wake_up_all(&dev_priv->gmbus_wait_queue); |
ce99c256 DV |
933 | } |
934 | ||
baf02a1f BW |
935 | /* Unlike gen6_queue_rps_work() from which this function is originally derived, |
936 | * we must be able to deal with other PM interrupts. This is complicated because | |
937 | * of the way in which we use the masks to defer the RPS work (which for | |
938 | * posterity is necessary because of forcewake). | |
939 | */ | |
940 | static void hsw_pm_irq_handler(struct drm_i915_private *dev_priv, | |
941 | u32 pm_iir) | |
942 | { | |
943 | unsigned long flags; | |
944 | ||
945 | spin_lock_irqsave(&dev_priv->rps.lock, flags); | |
4848405c | 946 | dev_priv->rps.pm_iir |= pm_iir & GEN6_PM_RPS_EVENTS; |
baf02a1f BW |
947 | if (dev_priv->rps.pm_iir) { |
948 | I915_WRITE(GEN6_PMIMR, dev_priv->rps.pm_iir); | |
949 | /* never want to mask useful interrupts. (also posting read) */ | |
4848405c | 950 | WARN_ON(I915_READ_NOTRACE(GEN6_PMIMR) & ~GEN6_PM_RPS_EVENTS); |
baf02a1f BW |
951 | /* TODO: if queue_work is slow, move it out of the spinlock */ |
952 | queue_work(dev_priv->wq, &dev_priv->rps.work); | |
953 | } | |
954 | spin_unlock_irqrestore(&dev_priv->rps.lock, flags); | |
955 | ||
12638c57 BW |
956 | if (pm_iir & ~GEN6_PM_RPS_EVENTS) { |
957 | if (pm_iir & PM_VEBOX_USER_INTERRUPT) | |
958 | notify_ring(dev_priv->dev, &dev_priv->ring[VECS]); | |
959 | ||
960 | if (pm_iir & PM_VEBOX_CS_ERROR_INTERRUPT) { | |
961 | DRM_ERROR("VEBOX CS error interrupt 0x%08x\n", pm_iir); | |
962 | i915_handle_error(dev_priv->dev, false); | |
963 | } | |
964 | } | |
baf02a1f BW |
965 | } |
966 | ||
ff1f525e | 967 | static irqreturn_t valleyview_irq_handler(int irq, void *arg) |
7e231dbe JB |
968 | { |
969 | struct drm_device *dev = (struct drm_device *) arg; | |
970 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
971 | u32 iir, gt_iir, pm_iir; | |
972 | irqreturn_t ret = IRQ_NONE; | |
973 | unsigned long irqflags; | |
974 | int pipe; | |
975 | u32 pipe_stats[I915_MAX_PIPES]; | |
7e231dbe JB |
976 | |
977 | atomic_inc(&dev_priv->irq_received); | |
978 | ||
7e231dbe JB |
979 | while (true) { |
980 | iir = I915_READ(VLV_IIR); | |
981 | gt_iir = I915_READ(GTIIR); | |
982 | pm_iir = I915_READ(GEN6_PMIIR); | |
983 | ||
984 | if (gt_iir == 0 && pm_iir == 0 && iir == 0) | |
985 | goto out; | |
986 | ||
987 | ret = IRQ_HANDLED; | |
988 | ||
e7b4c6b1 | 989 | snb_gt_irq_handler(dev, dev_priv, gt_iir); |
7e231dbe JB |
990 | |
991 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
992 | for_each_pipe(pipe) { | |
993 | int reg = PIPESTAT(pipe); | |
994 | pipe_stats[pipe] = I915_READ(reg); | |
995 | ||
996 | /* | |
997 | * Clear the PIPE*STAT regs before the IIR | |
998 | */ | |
999 | if (pipe_stats[pipe] & 0x8000ffff) { | |
1000 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) | |
1001 | DRM_DEBUG_DRIVER("pipe %c underrun\n", | |
1002 | pipe_name(pipe)); | |
1003 | I915_WRITE(reg, pipe_stats[pipe]); | |
1004 | } | |
1005 | } | |
1006 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
1007 | ||
31acc7f5 JB |
1008 | for_each_pipe(pipe) { |
1009 | if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS) | |
1010 | drm_handle_vblank(dev, pipe); | |
1011 | ||
1012 | if (pipe_stats[pipe] & PLANE_FLIPDONE_INT_STATUS_VLV) { | |
1013 | intel_prepare_page_flip(dev, pipe); | |
1014 | intel_finish_page_flip(dev, pipe); | |
1015 | } | |
1016 | } | |
1017 | ||
7e231dbe JB |
1018 | /* Consume port. Then clear IIR or we'll miss events */ |
1019 | if (iir & I915_DISPLAY_PORT_INTERRUPT) { | |
1020 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); | |
b543fb04 | 1021 | u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_I915; |
7e231dbe JB |
1022 | |
1023 | DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", | |
1024 | hotplug_status); | |
91d131d2 DV |
1025 | |
1026 | intel_hpd_irq_handler(dev, hotplug_trigger, hpd_status_i915); | |
1027 | ||
7e231dbe JB |
1028 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); |
1029 | I915_READ(PORT_HOTPLUG_STAT); | |
1030 | } | |
1031 | ||
515ac2bb DV |
1032 | if (pipe_stats[0] & PIPE_GMBUS_INTERRUPT_STATUS) |
1033 | gmbus_irq_handler(dev); | |
7e231dbe | 1034 | |
4848405c | 1035 | if (pm_iir & GEN6_PM_RPS_EVENTS) |
fc6826d1 | 1036 | gen6_queue_rps_work(dev_priv, pm_iir); |
7e231dbe JB |
1037 | |
1038 | I915_WRITE(GTIIR, gt_iir); | |
1039 | I915_WRITE(GEN6_PMIIR, pm_iir); | |
1040 | I915_WRITE(VLV_IIR, iir); | |
1041 | } | |
1042 | ||
1043 | out: | |
1044 | return ret; | |
1045 | } | |
1046 | ||
23e81d69 | 1047 | static void ibx_irq_handler(struct drm_device *dev, u32 pch_iir) |
776ad806 JB |
1048 | { |
1049 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
9db4a9c7 | 1050 | int pipe; |
b543fb04 | 1051 | u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK; |
776ad806 | 1052 | |
91d131d2 DV |
1053 | intel_hpd_irq_handler(dev, hotplug_trigger, hpd_ibx); |
1054 | ||
cfc33bf7 VS |
1055 | if (pch_iir & SDE_AUDIO_POWER_MASK) { |
1056 | int port = ffs((pch_iir & SDE_AUDIO_POWER_MASK) >> | |
1057 | SDE_AUDIO_POWER_SHIFT); | |
776ad806 | 1058 | DRM_DEBUG_DRIVER("PCH audio power change on port %d\n", |
cfc33bf7 VS |
1059 | port_name(port)); |
1060 | } | |
776ad806 | 1061 | |
ce99c256 DV |
1062 | if (pch_iir & SDE_AUX_MASK) |
1063 | dp_aux_irq_handler(dev); | |
1064 | ||
776ad806 | 1065 | if (pch_iir & SDE_GMBUS) |
515ac2bb | 1066 | gmbus_irq_handler(dev); |
776ad806 JB |
1067 | |
1068 | if (pch_iir & SDE_AUDIO_HDCP_MASK) | |
1069 | DRM_DEBUG_DRIVER("PCH HDCP audio interrupt\n"); | |
1070 | ||
1071 | if (pch_iir & SDE_AUDIO_TRANS_MASK) | |
1072 | DRM_DEBUG_DRIVER("PCH transcoder audio interrupt\n"); | |
1073 | ||
1074 | if (pch_iir & SDE_POISON) | |
1075 | DRM_ERROR("PCH poison interrupt\n"); | |
1076 | ||
9db4a9c7 JB |
1077 | if (pch_iir & SDE_FDI_MASK) |
1078 | for_each_pipe(pipe) | |
1079 | DRM_DEBUG_DRIVER(" pipe %c FDI IIR: 0x%08x\n", | |
1080 | pipe_name(pipe), | |
1081 | I915_READ(FDI_RX_IIR(pipe))); | |
776ad806 JB |
1082 | |
1083 | if (pch_iir & (SDE_TRANSB_CRC_DONE | SDE_TRANSA_CRC_DONE)) | |
1084 | DRM_DEBUG_DRIVER("PCH transcoder CRC done interrupt\n"); | |
1085 | ||
1086 | if (pch_iir & (SDE_TRANSB_CRC_ERR | SDE_TRANSA_CRC_ERR)) | |
1087 | DRM_DEBUG_DRIVER("PCH transcoder CRC error interrupt\n"); | |
1088 | ||
776ad806 | 1089 | if (pch_iir & SDE_TRANSA_FIFO_UNDER) |
8664281b PZ |
1090 | if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_A, |
1091 | false)) | |
1092 | DRM_DEBUG_DRIVER("PCH transcoder A FIFO underrun\n"); | |
1093 | ||
1094 | if (pch_iir & SDE_TRANSB_FIFO_UNDER) | |
1095 | if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_B, | |
1096 | false)) | |
1097 | DRM_DEBUG_DRIVER("PCH transcoder B FIFO underrun\n"); | |
1098 | } | |
1099 | ||
1100 | static void ivb_err_int_handler(struct drm_device *dev) | |
1101 | { | |
1102 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1103 | u32 err_int = I915_READ(GEN7_ERR_INT); | |
1104 | ||
de032bf4 PZ |
1105 | if (err_int & ERR_INT_POISON) |
1106 | DRM_ERROR("Poison interrupt\n"); | |
1107 | ||
8664281b PZ |
1108 | if (err_int & ERR_INT_FIFO_UNDERRUN_A) |
1109 | if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_A, false)) | |
1110 | DRM_DEBUG_DRIVER("Pipe A FIFO underrun\n"); | |
1111 | ||
1112 | if (err_int & ERR_INT_FIFO_UNDERRUN_B) | |
1113 | if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_B, false)) | |
1114 | DRM_DEBUG_DRIVER("Pipe B FIFO underrun\n"); | |
1115 | ||
1116 | if (err_int & ERR_INT_FIFO_UNDERRUN_C) | |
1117 | if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_C, false)) | |
1118 | DRM_DEBUG_DRIVER("Pipe C FIFO underrun\n"); | |
1119 | ||
1120 | I915_WRITE(GEN7_ERR_INT, err_int); | |
1121 | } | |
1122 | ||
1123 | static void cpt_serr_int_handler(struct drm_device *dev) | |
1124 | { | |
1125 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1126 | u32 serr_int = I915_READ(SERR_INT); | |
1127 | ||
de032bf4 PZ |
1128 | if (serr_int & SERR_INT_POISON) |
1129 | DRM_ERROR("PCH poison interrupt\n"); | |
1130 | ||
8664281b PZ |
1131 | if (serr_int & SERR_INT_TRANS_A_FIFO_UNDERRUN) |
1132 | if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_A, | |
1133 | false)) | |
1134 | DRM_DEBUG_DRIVER("PCH transcoder A FIFO underrun\n"); | |
1135 | ||
1136 | if (serr_int & SERR_INT_TRANS_B_FIFO_UNDERRUN) | |
1137 | if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_B, | |
1138 | false)) | |
1139 | DRM_DEBUG_DRIVER("PCH transcoder B FIFO underrun\n"); | |
1140 | ||
1141 | if (serr_int & SERR_INT_TRANS_C_FIFO_UNDERRUN) | |
1142 | if (intel_set_pch_fifo_underrun_reporting(dev, TRANSCODER_C, | |
1143 | false)) | |
1144 | DRM_DEBUG_DRIVER("PCH transcoder C FIFO underrun\n"); | |
1145 | ||
1146 | I915_WRITE(SERR_INT, serr_int); | |
776ad806 JB |
1147 | } |
1148 | ||
23e81d69 AJ |
1149 | static void cpt_irq_handler(struct drm_device *dev, u32 pch_iir) |
1150 | { | |
1151 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1152 | int pipe; | |
b543fb04 | 1153 | u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK_CPT; |
23e81d69 | 1154 | |
91d131d2 DV |
1155 | intel_hpd_irq_handler(dev, hotplug_trigger, hpd_cpt); |
1156 | ||
cfc33bf7 VS |
1157 | if (pch_iir & SDE_AUDIO_POWER_MASK_CPT) { |
1158 | int port = ffs((pch_iir & SDE_AUDIO_POWER_MASK_CPT) >> | |
1159 | SDE_AUDIO_POWER_SHIFT_CPT); | |
1160 | DRM_DEBUG_DRIVER("PCH audio power change on port %c\n", | |
1161 | port_name(port)); | |
1162 | } | |
23e81d69 AJ |
1163 | |
1164 | if (pch_iir & SDE_AUX_MASK_CPT) | |
ce99c256 | 1165 | dp_aux_irq_handler(dev); |
23e81d69 AJ |
1166 | |
1167 | if (pch_iir & SDE_GMBUS_CPT) | |
515ac2bb | 1168 | gmbus_irq_handler(dev); |
23e81d69 AJ |
1169 | |
1170 | if (pch_iir & SDE_AUDIO_CP_REQ_CPT) | |
1171 | DRM_DEBUG_DRIVER("Audio CP request interrupt\n"); | |
1172 | ||
1173 | if (pch_iir & SDE_AUDIO_CP_CHG_CPT) | |
1174 | DRM_DEBUG_DRIVER("Audio CP change interrupt\n"); | |
1175 | ||
1176 | if (pch_iir & SDE_FDI_MASK_CPT) | |
1177 | for_each_pipe(pipe) | |
1178 | DRM_DEBUG_DRIVER(" pipe %c FDI IIR: 0x%08x\n", | |
1179 | pipe_name(pipe), | |
1180 | I915_READ(FDI_RX_IIR(pipe))); | |
8664281b PZ |
1181 | |
1182 | if (pch_iir & SDE_ERROR_CPT) | |
1183 | cpt_serr_int_handler(dev); | |
23e81d69 AJ |
1184 | } |
1185 | ||
ff1f525e | 1186 | static irqreturn_t ivybridge_irq_handler(int irq, void *arg) |
b1f14ad0 JB |
1187 | { |
1188 | struct drm_device *dev = (struct drm_device *) arg; | |
1189 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
ab5c608b | 1190 | u32 de_iir, gt_iir, de_ier, pm_iir, sde_ier = 0; |
0e43406b CW |
1191 | irqreturn_t ret = IRQ_NONE; |
1192 | int i; | |
b1f14ad0 JB |
1193 | |
1194 | atomic_inc(&dev_priv->irq_received); | |
1195 | ||
8664281b PZ |
1196 | /* We get interrupts on unclaimed registers, so check for this before we |
1197 | * do any I915_{READ,WRITE}. */ | |
1198 | if (IS_HASWELL(dev) && | |
1199 | (I915_READ_NOTRACE(FPGA_DBG) & FPGA_DBG_RM_NOCLAIM)) { | |
1200 | DRM_ERROR("Unclaimed register before interrupt\n"); | |
1201 | I915_WRITE_NOTRACE(FPGA_DBG, FPGA_DBG_RM_NOCLAIM); | |
1202 | } | |
1203 | ||
b1f14ad0 JB |
1204 | /* disable master interrupt before clearing iir */ |
1205 | de_ier = I915_READ(DEIER); | |
1206 | I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL); | |
b1f14ad0 | 1207 | |
44498aea PZ |
1208 | /* Disable south interrupts. We'll only write to SDEIIR once, so further |
1209 | * interrupts will will be stored on its back queue, and then we'll be | |
1210 | * able to process them after we restore SDEIER (as soon as we restore | |
1211 | * it, we'll get an interrupt if SDEIIR still has something to process | |
1212 | * due to its back queue). */ | |
ab5c608b BW |
1213 | if (!HAS_PCH_NOP(dev)) { |
1214 | sde_ier = I915_READ(SDEIER); | |
1215 | I915_WRITE(SDEIER, 0); | |
1216 | POSTING_READ(SDEIER); | |
1217 | } | |
44498aea | 1218 | |
8664281b PZ |
1219 | /* On Haswell, also mask ERR_INT because we don't want to risk |
1220 | * generating "unclaimed register" interrupts from inside the interrupt | |
1221 | * handler. */ | |
4bc9d430 DV |
1222 | if (IS_HASWELL(dev)) { |
1223 | spin_lock(&dev_priv->irq_lock); | |
8664281b | 1224 | ironlake_disable_display_irq(dev_priv, DE_ERR_INT_IVB); |
4bc9d430 DV |
1225 | spin_unlock(&dev_priv->irq_lock); |
1226 | } | |
8664281b | 1227 | |
b1f14ad0 | 1228 | gt_iir = I915_READ(GTIIR); |
0e43406b CW |
1229 | if (gt_iir) { |
1230 | snb_gt_irq_handler(dev, dev_priv, gt_iir); | |
1231 | I915_WRITE(GTIIR, gt_iir); | |
1232 | ret = IRQ_HANDLED; | |
b1f14ad0 JB |
1233 | } |
1234 | ||
0e43406b CW |
1235 | de_iir = I915_READ(DEIIR); |
1236 | if (de_iir) { | |
8664281b PZ |
1237 | if (de_iir & DE_ERR_INT_IVB) |
1238 | ivb_err_int_handler(dev); | |
1239 | ||
ce99c256 DV |
1240 | if (de_iir & DE_AUX_CHANNEL_A_IVB) |
1241 | dp_aux_irq_handler(dev); | |
1242 | ||
0e43406b | 1243 | if (de_iir & DE_GSE_IVB) |
81a07809 | 1244 | intel_opregion_asle_intr(dev); |
0e43406b CW |
1245 | |
1246 | for (i = 0; i < 3; i++) { | |
74d44445 DV |
1247 | if (de_iir & (DE_PIPEA_VBLANK_IVB << (5 * i))) |
1248 | drm_handle_vblank(dev, i); | |
0e43406b CW |
1249 | if (de_iir & (DE_PLANEA_FLIP_DONE_IVB << (5 * i))) { |
1250 | intel_prepare_page_flip(dev, i); | |
1251 | intel_finish_page_flip_plane(dev, i); | |
1252 | } | |
0e43406b | 1253 | } |
b615b57a | 1254 | |
0e43406b | 1255 | /* check event from PCH */ |
ab5c608b | 1256 | if (!HAS_PCH_NOP(dev) && (de_iir & DE_PCH_EVENT_IVB)) { |
0e43406b | 1257 | u32 pch_iir = I915_READ(SDEIIR); |
b1f14ad0 | 1258 | |
23e81d69 | 1259 | cpt_irq_handler(dev, pch_iir); |
b1f14ad0 | 1260 | |
0e43406b CW |
1261 | /* clear PCH hotplug event before clear CPU irq */ |
1262 | I915_WRITE(SDEIIR, pch_iir); | |
1263 | } | |
b615b57a | 1264 | |
0e43406b CW |
1265 | I915_WRITE(DEIIR, de_iir); |
1266 | ret = IRQ_HANDLED; | |
b1f14ad0 JB |
1267 | } |
1268 | ||
0e43406b CW |
1269 | pm_iir = I915_READ(GEN6_PMIIR); |
1270 | if (pm_iir) { | |
baf02a1f BW |
1271 | if (IS_HASWELL(dev)) |
1272 | hsw_pm_irq_handler(dev_priv, pm_iir); | |
4848405c | 1273 | else if (pm_iir & GEN6_PM_RPS_EVENTS) |
0e43406b CW |
1274 | gen6_queue_rps_work(dev_priv, pm_iir); |
1275 | I915_WRITE(GEN6_PMIIR, pm_iir); | |
1276 | ret = IRQ_HANDLED; | |
1277 | } | |
b1f14ad0 | 1278 | |
4bc9d430 DV |
1279 | if (IS_HASWELL(dev)) { |
1280 | spin_lock(&dev_priv->irq_lock); | |
1281 | if (ivb_can_enable_err_int(dev)) | |
1282 | ironlake_enable_display_irq(dev_priv, DE_ERR_INT_IVB); | |
1283 | spin_unlock(&dev_priv->irq_lock); | |
1284 | } | |
8664281b | 1285 | |
b1f14ad0 JB |
1286 | I915_WRITE(DEIER, de_ier); |
1287 | POSTING_READ(DEIER); | |
ab5c608b BW |
1288 | if (!HAS_PCH_NOP(dev)) { |
1289 | I915_WRITE(SDEIER, sde_ier); | |
1290 | POSTING_READ(SDEIER); | |
1291 | } | |
b1f14ad0 JB |
1292 | |
1293 | return ret; | |
1294 | } | |
1295 | ||
e7b4c6b1 DV |
1296 | static void ilk_gt_irq_handler(struct drm_device *dev, |
1297 | struct drm_i915_private *dev_priv, | |
1298 | u32 gt_iir) | |
1299 | { | |
cc609d5d BW |
1300 | if (gt_iir & |
1301 | (GT_RENDER_USER_INTERRUPT | GT_RENDER_PIPECTL_NOTIFY_INTERRUPT)) | |
e7b4c6b1 | 1302 | notify_ring(dev, &dev_priv->ring[RCS]); |
cc609d5d | 1303 | if (gt_iir & ILK_BSD_USER_INTERRUPT) |
e7b4c6b1 DV |
1304 | notify_ring(dev, &dev_priv->ring[VCS]); |
1305 | } | |
1306 | ||
ff1f525e | 1307 | static irqreturn_t ironlake_irq_handler(int irq, void *arg) |
036a4a7d | 1308 | { |
4697995b | 1309 | struct drm_device *dev = (struct drm_device *) arg; |
036a4a7d ZW |
1310 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
1311 | int ret = IRQ_NONE; | |
44498aea | 1312 | u32 de_iir, gt_iir, de_ier, pm_iir, sde_ier; |
881f47b6 | 1313 | |
4697995b JB |
1314 | atomic_inc(&dev_priv->irq_received); |
1315 | ||
2d109a84 ZN |
1316 | /* disable master interrupt before clearing iir */ |
1317 | de_ier = I915_READ(DEIER); | |
1318 | I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL); | |
3143a2bf | 1319 | POSTING_READ(DEIER); |
2d109a84 | 1320 | |
44498aea PZ |
1321 | /* Disable south interrupts. We'll only write to SDEIIR once, so further |
1322 | * interrupts will will be stored on its back queue, and then we'll be | |
1323 | * able to process them after we restore SDEIER (as soon as we restore | |
1324 | * it, we'll get an interrupt if SDEIIR still has something to process | |
1325 | * due to its back queue). */ | |
1326 | sde_ier = I915_READ(SDEIER); | |
1327 | I915_WRITE(SDEIER, 0); | |
1328 | POSTING_READ(SDEIER); | |
1329 | ||
036a4a7d ZW |
1330 | de_iir = I915_READ(DEIIR); |
1331 | gt_iir = I915_READ(GTIIR); | |
3b8d8d91 | 1332 | pm_iir = I915_READ(GEN6_PMIIR); |
036a4a7d | 1333 | |
acd15b6c | 1334 | if (de_iir == 0 && gt_iir == 0 && (!IS_GEN6(dev) || pm_iir == 0)) |
c7c85101 | 1335 | goto done; |
036a4a7d | 1336 | |
c7c85101 | 1337 | ret = IRQ_HANDLED; |
036a4a7d | 1338 | |
e7b4c6b1 DV |
1339 | if (IS_GEN5(dev)) |
1340 | ilk_gt_irq_handler(dev, dev_priv, gt_iir); | |
1341 | else | |
1342 | snb_gt_irq_handler(dev, dev_priv, gt_iir); | |
01c66889 | 1343 | |
ce99c256 DV |
1344 | if (de_iir & DE_AUX_CHANNEL_A) |
1345 | dp_aux_irq_handler(dev); | |
1346 | ||
c7c85101 | 1347 | if (de_iir & DE_GSE) |
81a07809 | 1348 | intel_opregion_asle_intr(dev); |
c650156a | 1349 | |
74d44445 DV |
1350 | if (de_iir & DE_PIPEA_VBLANK) |
1351 | drm_handle_vblank(dev, 0); | |
1352 | ||
1353 | if (de_iir & DE_PIPEB_VBLANK) | |
1354 | drm_handle_vblank(dev, 1); | |
1355 | ||
de032bf4 PZ |
1356 | if (de_iir & DE_POISON) |
1357 | DRM_ERROR("Poison interrupt\n"); | |
1358 | ||
8664281b PZ |
1359 | if (de_iir & DE_PIPEA_FIFO_UNDERRUN) |
1360 | if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_A, false)) | |
1361 | DRM_DEBUG_DRIVER("Pipe A FIFO underrun\n"); | |
1362 | ||
1363 | if (de_iir & DE_PIPEB_FIFO_UNDERRUN) | |
1364 | if (intel_set_cpu_fifo_underrun_reporting(dev, PIPE_B, false)) | |
1365 | DRM_DEBUG_DRIVER("Pipe B FIFO underrun\n"); | |
1366 | ||
f072d2e7 | 1367 | if (de_iir & DE_PLANEA_FLIP_DONE) { |
013d5aa2 | 1368 | intel_prepare_page_flip(dev, 0); |
2bbda389 | 1369 | intel_finish_page_flip_plane(dev, 0); |
f072d2e7 | 1370 | } |
013d5aa2 | 1371 | |
f072d2e7 | 1372 | if (de_iir & DE_PLANEB_FLIP_DONE) { |
013d5aa2 | 1373 | intel_prepare_page_flip(dev, 1); |
2bbda389 | 1374 | intel_finish_page_flip_plane(dev, 1); |
f072d2e7 | 1375 | } |
013d5aa2 | 1376 | |
c7c85101 | 1377 | /* check event from PCH */ |
776ad806 | 1378 | if (de_iir & DE_PCH_EVENT) { |
acd15b6c DV |
1379 | u32 pch_iir = I915_READ(SDEIIR); |
1380 | ||
23e81d69 AJ |
1381 | if (HAS_PCH_CPT(dev)) |
1382 | cpt_irq_handler(dev, pch_iir); | |
1383 | else | |
1384 | ibx_irq_handler(dev, pch_iir); | |
acd15b6c DV |
1385 | |
1386 | /* should clear PCH hotplug event before clear CPU irq */ | |
1387 | I915_WRITE(SDEIIR, pch_iir); | |
776ad806 | 1388 | } |
036a4a7d | 1389 | |
73edd18f DV |
1390 | if (IS_GEN5(dev) && de_iir & DE_PCU_EVENT) |
1391 | ironlake_handle_rps_change(dev); | |
f97108d1 | 1392 | |
4848405c | 1393 | if (IS_GEN6(dev) && pm_iir & GEN6_PM_RPS_EVENTS) |
fc6826d1 | 1394 | gen6_queue_rps_work(dev_priv, pm_iir); |
3b8d8d91 | 1395 | |
c7c85101 ZN |
1396 | I915_WRITE(GTIIR, gt_iir); |
1397 | I915_WRITE(DEIIR, de_iir); | |
4912d041 | 1398 | I915_WRITE(GEN6_PMIIR, pm_iir); |
c7c85101 ZN |
1399 | |
1400 | done: | |
2d109a84 | 1401 | I915_WRITE(DEIER, de_ier); |
3143a2bf | 1402 | POSTING_READ(DEIER); |
44498aea PZ |
1403 | I915_WRITE(SDEIER, sde_ier); |
1404 | POSTING_READ(SDEIER); | |
2d109a84 | 1405 | |
036a4a7d ZW |
1406 | return ret; |
1407 | } | |
1408 | ||
8a905236 JB |
1409 | /** |
1410 | * i915_error_work_func - do process context error handling work | |
1411 | * @work: work struct | |
1412 | * | |
1413 | * Fire an error uevent so userspace can see that a hang or error | |
1414 | * was detected. | |
1415 | */ | |
1416 | static void i915_error_work_func(struct work_struct *work) | |
1417 | { | |
1f83fee0 DV |
1418 | struct i915_gpu_error *error = container_of(work, struct i915_gpu_error, |
1419 | work); | |
1420 | drm_i915_private_t *dev_priv = container_of(error, drm_i915_private_t, | |
1421 | gpu_error); | |
8a905236 | 1422 | struct drm_device *dev = dev_priv->dev; |
f69061be | 1423 | struct intel_ring_buffer *ring; |
f316a42c BG |
1424 | char *error_event[] = { "ERROR=1", NULL }; |
1425 | char *reset_event[] = { "RESET=1", NULL }; | |
1426 | char *reset_done_event[] = { "ERROR=0", NULL }; | |
f69061be | 1427 | int i, ret; |
8a905236 | 1428 | |
f316a42c BG |
1429 | kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, error_event); |
1430 | ||
7db0ba24 DV |
1431 | /* |
1432 | * Note that there's only one work item which does gpu resets, so we | |
1433 | * need not worry about concurrent gpu resets potentially incrementing | |
1434 | * error->reset_counter twice. We only need to take care of another | |
1435 | * racing irq/hangcheck declaring the gpu dead for a second time. A | |
1436 | * quick check for that is good enough: schedule_work ensures the | |
1437 | * correct ordering between hang detection and this work item, and since | |
1438 | * the reset in-progress bit is only ever set by code outside of this | |
1439 | * work we don't need to worry about any other races. | |
1440 | */ | |
1441 | if (i915_reset_in_progress(error) && !i915_terminally_wedged(error)) { | |
f803aa55 | 1442 | DRM_DEBUG_DRIVER("resetting chip\n"); |
7db0ba24 DV |
1443 | kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, |
1444 | reset_event); | |
1f83fee0 | 1445 | |
f69061be DV |
1446 | ret = i915_reset(dev); |
1447 | ||
1448 | if (ret == 0) { | |
1449 | /* | |
1450 | * After all the gem state is reset, increment the reset | |
1451 | * counter and wake up everyone waiting for the reset to | |
1452 | * complete. | |
1453 | * | |
1454 | * Since unlock operations are a one-sided barrier only, | |
1455 | * we need to insert a barrier here to order any seqno | |
1456 | * updates before | |
1457 | * the counter increment. | |
1458 | */ | |
1459 | smp_mb__before_atomic_inc(); | |
1460 | atomic_inc(&dev_priv->gpu_error.reset_counter); | |
1461 | ||
1462 | kobject_uevent_env(&dev->primary->kdev.kobj, | |
1463 | KOBJ_CHANGE, reset_done_event); | |
1f83fee0 DV |
1464 | } else { |
1465 | atomic_set(&error->reset_counter, I915_WEDGED); | |
f316a42c | 1466 | } |
1f83fee0 | 1467 | |
f69061be DV |
1468 | for_each_ring(ring, dev_priv, i) |
1469 | wake_up_all(&ring->irq_queue); | |
1470 | ||
96a02917 VS |
1471 | intel_display_handle_reset(dev); |
1472 | ||
1f83fee0 | 1473 | wake_up_all(&dev_priv->gpu_error.reset_queue); |
f316a42c | 1474 | } |
8a905236 JB |
1475 | } |
1476 | ||
85f9e50d DV |
1477 | /* NB: please notice the memset */ |
1478 | static void i915_get_extra_instdone(struct drm_device *dev, | |
1479 | uint32_t *instdone) | |
1480 | { | |
1481 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1482 | memset(instdone, 0, sizeof(*instdone) * I915_NUM_INSTDONE_REG); | |
1483 | ||
1484 | switch(INTEL_INFO(dev)->gen) { | |
1485 | case 2: | |
1486 | case 3: | |
1487 | instdone[0] = I915_READ(INSTDONE); | |
1488 | break; | |
1489 | case 4: | |
1490 | case 5: | |
1491 | case 6: | |
1492 | instdone[0] = I915_READ(INSTDONE_I965); | |
1493 | instdone[1] = I915_READ(INSTDONE1); | |
1494 | break; | |
1495 | default: | |
1496 | WARN_ONCE(1, "Unsupported platform\n"); | |
1497 | case 7: | |
1498 | instdone[0] = I915_READ(GEN7_INSTDONE_1); | |
1499 | instdone[1] = I915_READ(GEN7_SC_INSTDONE); | |
1500 | instdone[2] = I915_READ(GEN7_SAMPLER_INSTDONE); | |
1501 | instdone[3] = I915_READ(GEN7_ROW_INSTDONE); | |
1502 | break; | |
1503 | } | |
1504 | } | |
1505 | ||
3bd3c932 | 1506 | #ifdef CONFIG_DEBUG_FS |
9df30794 | 1507 | static struct drm_i915_error_object * |
d0d045e8 BW |
1508 | i915_error_object_create_sized(struct drm_i915_private *dev_priv, |
1509 | struct drm_i915_gem_object *src, | |
1510 | const int num_pages) | |
9df30794 CW |
1511 | { |
1512 | struct drm_i915_error_object *dst; | |
d0d045e8 | 1513 | int i; |
e56660dd | 1514 | u32 reloc_offset; |
9df30794 | 1515 | |
05394f39 | 1516 | if (src == NULL || src->pages == NULL) |
9df30794 CW |
1517 | return NULL; |
1518 | ||
d0d045e8 | 1519 | dst = kmalloc(sizeof(*dst) + num_pages * sizeof(u32 *), GFP_ATOMIC); |
9df30794 CW |
1520 | if (dst == NULL) |
1521 | return NULL; | |
1522 | ||
f343c5f6 | 1523 | reloc_offset = dst->gtt_offset = i915_gem_obj_ggtt_offset(src); |
d0d045e8 | 1524 | for (i = 0; i < num_pages; i++) { |
788885ae | 1525 | unsigned long flags; |
e56660dd | 1526 | void *d; |
788885ae | 1527 | |
e56660dd | 1528 | d = kmalloc(PAGE_SIZE, GFP_ATOMIC); |
9df30794 CW |
1529 | if (d == NULL) |
1530 | goto unwind; | |
e56660dd | 1531 | |
788885ae | 1532 | local_irq_save(flags); |
5d4545ae | 1533 | if (reloc_offset < dev_priv->gtt.mappable_end && |
74898d7e | 1534 | src->has_global_gtt_mapping) { |
172975aa CW |
1535 | void __iomem *s; |
1536 | ||
1537 | /* Simply ignore tiling or any overlapping fence. | |
1538 | * It's part of the error state, and this hopefully | |
1539 | * captures what the GPU read. | |
1540 | */ | |
1541 | ||
5d4545ae | 1542 | s = io_mapping_map_atomic_wc(dev_priv->gtt.mappable, |
172975aa CW |
1543 | reloc_offset); |
1544 | memcpy_fromio(d, s, PAGE_SIZE); | |
1545 | io_mapping_unmap_atomic(s); | |
960e3564 CW |
1546 | } else if (src->stolen) { |
1547 | unsigned long offset; | |
1548 | ||
1549 | offset = dev_priv->mm.stolen_base; | |
1550 | offset += src->stolen->start; | |
1551 | offset += i << PAGE_SHIFT; | |
1552 | ||
1a240d4d | 1553 | memcpy_fromio(d, (void __iomem *) offset, PAGE_SIZE); |
172975aa | 1554 | } else { |
9da3da66 | 1555 | struct page *page; |
172975aa CW |
1556 | void *s; |
1557 | ||
9da3da66 | 1558 | page = i915_gem_object_get_page(src, i); |
172975aa | 1559 | |
9da3da66 CW |
1560 | drm_clflush_pages(&page, 1); |
1561 | ||
1562 | s = kmap_atomic(page); | |
172975aa CW |
1563 | memcpy(d, s, PAGE_SIZE); |
1564 | kunmap_atomic(s); | |
1565 | ||
9da3da66 | 1566 | drm_clflush_pages(&page, 1); |
172975aa | 1567 | } |
788885ae | 1568 | local_irq_restore(flags); |
e56660dd | 1569 | |
9da3da66 | 1570 | dst->pages[i] = d; |
e56660dd CW |
1571 | |
1572 | reloc_offset += PAGE_SIZE; | |
9df30794 | 1573 | } |
d0d045e8 | 1574 | dst->page_count = num_pages; |
9df30794 CW |
1575 | |
1576 | return dst; | |
1577 | ||
1578 | unwind: | |
9da3da66 CW |
1579 | while (i--) |
1580 | kfree(dst->pages[i]); | |
9df30794 CW |
1581 | kfree(dst); |
1582 | return NULL; | |
1583 | } | |
d0d045e8 BW |
1584 | #define i915_error_object_create(dev_priv, src) \ |
1585 | i915_error_object_create_sized((dev_priv), (src), \ | |
1586 | (src)->base.size>>PAGE_SHIFT) | |
9df30794 CW |
1587 | |
1588 | static void | |
1589 | i915_error_object_free(struct drm_i915_error_object *obj) | |
1590 | { | |
1591 | int page; | |
1592 | ||
1593 | if (obj == NULL) | |
1594 | return; | |
1595 | ||
1596 | for (page = 0; page < obj->page_count; page++) | |
1597 | kfree(obj->pages[page]); | |
1598 | ||
1599 | kfree(obj); | |
1600 | } | |
1601 | ||
742cbee8 DV |
1602 | void |
1603 | i915_error_state_free(struct kref *error_ref) | |
9df30794 | 1604 | { |
742cbee8 DV |
1605 | struct drm_i915_error_state *error = container_of(error_ref, |
1606 | typeof(*error), ref); | |
e2f973d5 CW |
1607 | int i; |
1608 | ||
52d39a21 CW |
1609 | for (i = 0; i < ARRAY_SIZE(error->ring); i++) { |
1610 | i915_error_object_free(error->ring[i].batchbuffer); | |
1611 | i915_error_object_free(error->ring[i].ringbuffer); | |
7ed73da0 | 1612 | i915_error_object_free(error->ring[i].ctx); |
52d39a21 CW |
1613 | kfree(error->ring[i].requests); |
1614 | } | |
e2f973d5 | 1615 | |
9df30794 | 1616 | kfree(error->active_bo); |
6ef3d427 | 1617 | kfree(error->overlay); |
7ed73da0 | 1618 | kfree(error->display); |
9df30794 CW |
1619 | kfree(error); |
1620 | } | |
1b50247a CW |
1621 | static void capture_bo(struct drm_i915_error_buffer *err, |
1622 | struct drm_i915_gem_object *obj) | |
1623 | { | |
1624 | err->size = obj->base.size; | |
1625 | err->name = obj->base.name; | |
0201f1ec CW |
1626 | err->rseqno = obj->last_read_seqno; |
1627 | err->wseqno = obj->last_write_seqno; | |
f343c5f6 | 1628 | err->gtt_offset = i915_gem_obj_ggtt_offset(obj); |
1b50247a CW |
1629 | err->read_domains = obj->base.read_domains; |
1630 | err->write_domain = obj->base.write_domain; | |
1631 | err->fence_reg = obj->fence_reg; | |
1632 | err->pinned = 0; | |
1633 | if (obj->pin_count > 0) | |
1634 | err->pinned = 1; | |
1635 | if (obj->user_pin_count > 0) | |
1636 | err->pinned = -1; | |
1637 | err->tiling = obj->tiling_mode; | |
1638 | err->dirty = obj->dirty; | |
1639 | err->purgeable = obj->madv != I915_MADV_WILLNEED; | |
1640 | err->ring = obj->ring ? obj->ring->id : -1; | |
1641 | err->cache_level = obj->cache_level; | |
1642 | } | |
9df30794 | 1643 | |
1b50247a CW |
1644 | static u32 capture_active_bo(struct drm_i915_error_buffer *err, |
1645 | int count, struct list_head *head) | |
c724e8a9 CW |
1646 | { |
1647 | struct drm_i915_gem_object *obj; | |
1648 | int i = 0; | |
1649 | ||
1650 | list_for_each_entry(obj, head, mm_list) { | |
1b50247a | 1651 | capture_bo(err++, obj); |
c724e8a9 CW |
1652 | if (++i == count) |
1653 | break; | |
1b50247a CW |
1654 | } |
1655 | ||
1656 | return i; | |
1657 | } | |
1658 | ||
1659 | static u32 capture_pinned_bo(struct drm_i915_error_buffer *err, | |
1660 | int count, struct list_head *head) | |
1661 | { | |
1662 | struct drm_i915_gem_object *obj; | |
1663 | int i = 0; | |
1664 | ||
35c20a60 | 1665 | list_for_each_entry(obj, head, global_list) { |
1b50247a CW |
1666 | if (obj->pin_count == 0) |
1667 | continue; | |
c724e8a9 | 1668 | |
1b50247a CW |
1669 | capture_bo(err++, obj); |
1670 | if (++i == count) | |
1671 | break; | |
c724e8a9 CW |
1672 | } |
1673 | ||
1674 | return i; | |
1675 | } | |
1676 | ||
748ebc60 CW |
1677 | static void i915_gem_record_fences(struct drm_device *dev, |
1678 | struct drm_i915_error_state *error) | |
1679 | { | |
1680 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1681 | int i; | |
1682 | ||
1683 | /* Fences */ | |
1684 | switch (INTEL_INFO(dev)->gen) { | |
775d17b6 | 1685 | case 7: |
748ebc60 | 1686 | case 6: |
42b5aeab | 1687 | for (i = 0; i < dev_priv->num_fence_regs; i++) |
748ebc60 CW |
1688 | error->fence[i] = I915_READ64(FENCE_REG_SANDYBRIDGE_0 + (i * 8)); |
1689 | break; | |
1690 | case 5: | |
1691 | case 4: | |
1692 | for (i = 0; i < 16; i++) | |
1693 | error->fence[i] = I915_READ64(FENCE_REG_965_0 + (i * 8)); | |
1694 | break; | |
1695 | case 3: | |
1696 | if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) | |
1697 | for (i = 0; i < 8; i++) | |
1698 | error->fence[i+8] = I915_READ(FENCE_REG_945_8 + (i * 4)); | |
1699 | case 2: | |
1700 | for (i = 0; i < 8; i++) | |
1701 | error->fence[i] = I915_READ(FENCE_REG_830_0 + (i * 4)); | |
1702 | break; | |
1703 | ||
7dbf9d6e BW |
1704 | default: |
1705 | BUG(); | |
748ebc60 CW |
1706 | } |
1707 | } | |
1708 | ||
bcfb2e28 CW |
1709 | static struct drm_i915_error_object * |
1710 | i915_error_first_batchbuffer(struct drm_i915_private *dev_priv, | |
1711 | struct intel_ring_buffer *ring) | |
1712 | { | |
1713 | struct drm_i915_gem_object *obj; | |
1714 | u32 seqno; | |
1715 | ||
1716 | if (!ring->get_seqno) | |
1717 | return NULL; | |
1718 | ||
b45305fc DV |
1719 | if (HAS_BROKEN_CS_TLB(dev_priv->dev)) { |
1720 | u32 acthd = I915_READ(ACTHD); | |
1721 | ||
1722 | if (WARN_ON(ring->id != RCS)) | |
1723 | return NULL; | |
1724 | ||
1725 | obj = ring->private; | |
f343c5f6 BW |
1726 | if (acthd >= i915_gem_obj_ggtt_offset(obj) && |
1727 | acthd < i915_gem_obj_ggtt_offset(obj) + obj->base.size) | |
b45305fc DV |
1728 | return i915_error_object_create(dev_priv, obj); |
1729 | } | |
1730 | ||
b2eadbc8 | 1731 | seqno = ring->get_seqno(ring, false); |
bcfb2e28 CW |
1732 | list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) { |
1733 | if (obj->ring != ring) | |
1734 | continue; | |
1735 | ||
0201f1ec | 1736 | if (i915_seqno_passed(seqno, obj->last_read_seqno)) |
bcfb2e28 CW |
1737 | continue; |
1738 | ||
1739 | if ((obj->base.read_domains & I915_GEM_DOMAIN_COMMAND) == 0) | |
1740 | continue; | |
1741 | ||
1742 | /* We need to copy these to an anonymous buffer as the simplest | |
1743 | * method to avoid being overwritten by userspace. | |
1744 | */ | |
1745 | return i915_error_object_create(dev_priv, obj); | |
1746 | } | |
1747 | ||
1748 | return NULL; | |
1749 | } | |
1750 | ||
d27b1e0e DV |
1751 | static void i915_record_ring_state(struct drm_device *dev, |
1752 | struct drm_i915_error_state *error, | |
1753 | struct intel_ring_buffer *ring) | |
1754 | { | |
1755 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1756 | ||
33f3f518 | 1757 | if (INTEL_INFO(dev)->gen >= 6) { |
12f55818 | 1758 | error->rc_psmi[ring->id] = I915_READ(ring->mmio_base + 0x50); |
33f3f518 | 1759 | error->fault_reg[ring->id] = I915_READ(RING_FAULT_REG(ring)); |
7e3b8737 DV |
1760 | error->semaphore_mboxes[ring->id][0] |
1761 | = I915_READ(RING_SYNC_0(ring->mmio_base)); | |
1762 | error->semaphore_mboxes[ring->id][1] | |
1763 | = I915_READ(RING_SYNC_1(ring->mmio_base)); | |
df2b23d9 CW |
1764 | error->semaphore_seqno[ring->id][0] = ring->sync_seqno[0]; |
1765 | error->semaphore_seqno[ring->id][1] = ring->sync_seqno[1]; | |
33f3f518 | 1766 | } |
c1cd90ed | 1767 | |
d27b1e0e | 1768 | if (INTEL_INFO(dev)->gen >= 4) { |
9d2f41fa | 1769 | error->faddr[ring->id] = I915_READ(RING_DMA_FADD(ring->mmio_base)); |
d27b1e0e DV |
1770 | error->ipeir[ring->id] = I915_READ(RING_IPEIR(ring->mmio_base)); |
1771 | error->ipehr[ring->id] = I915_READ(RING_IPEHR(ring->mmio_base)); | |
1772 | error->instdone[ring->id] = I915_READ(RING_INSTDONE(ring->mmio_base)); | |
c1cd90ed | 1773 | error->instps[ring->id] = I915_READ(RING_INSTPS(ring->mmio_base)); |
050ee91f | 1774 | if (ring->id == RCS) |
d27b1e0e | 1775 | error->bbaddr = I915_READ64(BB_ADDR); |
d27b1e0e | 1776 | } else { |
9d2f41fa | 1777 | error->faddr[ring->id] = I915_READ(DMA_FADD_I8XX); |
d27b1e0e DV |
1778 | error->ipeir[ring->id] = I915_READ(IPEIR); |
1779 | error->ipehr[ring->id] = I915_READ(IPEHR); | |
1780 | error->instdone[ring->id] = I915_READ(INSTDONE); | |
d27b1e0e DV |
1781 | } |
1782 | ||
9574b3fe | 1783 | error->waiting[ring->id] = waitqueue_active(&ring->irq_queue); |
c1cd90ed | 1784 | error->instpm[ring->id] = I915_READ(RING_INSTPM(ring->mmio_base)); |
b2eadbc8 | 1785 | error->seqno[ring->id] = ring->get_seqno(ring, false); |
d27b1e0e | 1786 | error->acthd[ring->id] = intel_ring_get_active_head(ring); |
c1cd90ed DV |
1787 | error->head[ring->id] = I915_READ_HEAD(ring); |
1788 | error->tail[ring->id] = I915_READ_TAIL(ring); | |
0f3b6849 | 1789 | error->ctl[ring->id] = I915_READ_CTL(ring); |
7e3b8737 DV |
1790 | |
1791 | error->cpu_ring_head[ring->id] = ring->head; | |
1792 | error->cpu_ring_tail[ring->id] = ring->tail; | |
d27b1e0e DV |
1793 | } |
1794 | ||
8c123e54 BW |
1795 | |
1796 | static void i915_gem_record_active_context(struct intel_ring_buffer *ring, | |
1797 | struct drm_i915_error_state *error, | |
1798 | struct drm_i915_error_ring *ering) | |
1799 | { | |
1800 | struct drm_i915_private *dev_priv = ring->dev->dev_private; | |
1801 | struct drm_i915_gem_object *obj; | |
1802 | ||
1803 | /* Currently render ring is the only HW context user */ | |
1804 | if (ring->id != RCS || !error->ccid) | |
1805 | return; | |
1806 | ||
35c20a60 | 1807 | list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) { |
f343c5f6 | 1808 | if ((error->ccid & PAGE_MASK) == i915_gem_obj_ggtt_offset(obj)) { |
8c123e54 BW |
1809 | ering->ctx = i915_error_object_create_sized(dev_priv, |
1810 | obj, 1); | |
3ef8fb5a | 1811 | break; |
8c123e54 BW |
1812 | } |
1813 | } | |
1814 | } | |
1815 | ||
52d39a21 CW |
1816 | static void i915_gem_record_rings(struct drm_device *dev, |
1817 | struct drm_i915_error_state *error) | |
1818 | { | |
1819 | struct drm_i915_private *dev_priv = dev->dev_private; | |
b4519513 | 1820 | struct intel_ring_buffer *ring; |
52d39a21 CW |
1821 | struct drm_i915_gem_request *request; |
1822 | int i, count; | |
1823 | ||
b4519513 | 1824 | for_each_ring(ring, dev_priv, i) { |
52d39a21 CW |
1825 | i915_record_ring_state(dev, error, ring); |
1826 | ||
1827 | error->ring[i].batchbuffer = | |
1828 | i915_error_first_batchbuffer(dev_priv, ring); | |
1829 | ||
1830 | error->ring[i].ringbuffer = | |
1831 | i915_error_object_create(dev_priv, ring->obj); | |
1832 | ||
8c123e54 BW |
1833 | |
1834 | i915_gem_record_active_context(ring, error, &error->ring[i]); | |
1835 | ||
52d39a21 CW |
1836 | count = 0; |
1837 | list_for_each_entry(request, &ring->request_list, list) | |
1838 | count++; | |
1839 | ||
1840 | error->ring[i].num_requests = count; | |
1841 | error->ring[i].requests = | |
1842 | kmalloc(count*sizeof(struct drm_i915_error_request), | |
1843 | GFP_ATOMIC); | |
1844 | if (error->ring[i].requests == NULL) { | |
1845 | error->ring[i].num_requests = 0; | |
1846 | continue; | |
1847 | } | |
1848 | ||
1849 | count = 0; | |
1850 | list_for_each_entry(request, &ring->request_list, list) { | |
1851 | struct drm_i915_error_request *erq; | |
1852 | ||
1853 | erq = &error->ring[i].requests[count++]; | |
1854 | erq->seqno = request->seqno; | |
1855 | erq->jiffies = request->emitted_jiffies; | |
ee4f42b1 | 1856 | erq->tail = request->tail; |
52d39a21 CW |
1857 | } |
1858 | } | |
1859 | } | |
1860 | ||
26b7c224 BW |
1861 | static void i915_gem_capture_buffers(struct drm_i915_private *dev_priv, |
1862 | struct drm_i915_error_state *error) | |
1863 | { | |
1864 | struct drm_i915_gem_object *obj; | |
1865 | int i; | |
1866 | ||
1867 | i = 0; | |
1868 | list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) | |
1869 | i++; | |
1870 | error->active_bo_count = i; | |
1871 | list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) | |
1872 | if (obj->pin_count) | |
1873 | i++; | |
1874 | error->pinned_bo_count = i - error->active_bo_count; | |
1875 | ||
1876 | if (i) { | |
1877 | error->active_bo = kmalloc(sizeof(*error->active_bo)*i, | |
1878 | GFP_ATOMIC); | |
1879 | if (error->active_bo) | |
1880 | error->pinned_bo = | |
1881 | error->active_bo + error->active_bo_count; | |
1882 | } | |
1883 | ||
1884 | if (error->active_bo) | |
1885 | error->active_bo_count = | |
1886 | capture_active_bo(error->active_bo, | |
1887 | error->active_bo_count, | |
1888 | &dev_priv->mm.active_list); | |
1889 | ||
1890 | if (error->pinned_bo) | |
1891 | error->pinned_bo_count = | |
1892 | capture_pinned_bo(error->pinned_bo, | |
1893 | error->pinned_bo_count, | |
1894 | &dev_priv->mm.bound_list); | |
1895 | } | |
1896 | ||
8a905236 JB |
1897 | /** |
1898 | * i915_capture_error_state - capture an error record for later analysis | |
1899 | * @dev: drm device | |
1900 | * | |
1901 | * Should be called when an error is detected (either a hang or an error | |
1902 | * interrupt) to capture error state from the time of the error. Fills | |
1903 | * out a structure which becomes available in debugfs for user level tools | |
1904 | * to pick up. | |
1905 | */ | |
63eeaf38 JB |
1906 | static void i915_capture_error_state(struct drm_device *dev) |
1907 | { | |
1908 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1909 | struct drm_i915_error_state *error; | |
1910 | unsigned long flags; | |
26b7c224 | 1911 | int pipe; |
63eeaf38 | 1912 | |
99584db3 DV |
1913 | spin_lock_irqsave(&dev_priv->gpu_error.lock, flags); |
1914 | error = dev_priv->gpu_error.first_error; | |
1915 | spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags); | |
9df30794 CW |
1916 | if (error) |
1917 | return; | |
63eeaf38 | 1918 | |
9db4a9c7 | 1919 | /* Account for pipe specific data like PIPE*STAT */ |
33f3f518 | 1920 | error = kzalloc(sizeof(*error), GFP_ATOMIC); |
63eeaf38 | 1921 | if (!error) { |
9df30794 CW |
1922 | DRM_DEBUG_DRIVER("out of memory, not capturing error state\n"); |
1923 | return; | |
63eeaf38 JB |
1924 | } |
1925 | ||
5d83d294 | 1926 | DRM_INFO("capturing error event; look for more information in " |
ef86ddce | 1927 | "/sys/class/drm/card%d/error\n", dev->primary->index); |
2fa772f3 | 1928 | |
742cbee8 | 1929 | kref_init(&error->ref); |
63eeaf38 JB |
1930 | error->eir = I915_READ(EIR); |
1931 | error->pgtbl_er = I915_READ(PGTBL_ER); | |
211816ec BW |
1932 | if (HAS_HW_CONTEXTS(dev)) |
1933 | error->ccid = I915_READ(CCID); | |
be998e2e BW |
1934 | |
1935 | if (HAS_PCH_SPLIT(dev)) | |
1936 | error->ier = I915_READ(DEIER) | I915_READ(GTIER); | |
1937 | else if (IS_VALLEYVIEW(dev)) | |
1938 | error->ier = I915_READ(GTIER) | I915_READ(VLV_IER); | |
1939 | else if (IS_GEN2(dev)) | |
1940 | error->ier = I915_READ16(IER); | |
1941 | else | |
1942 | error->ier = I915_READ(IER); | |
1943 | ||
0f3b6849 CW |
1944 | if (INTEL_INFO(dev)->gen >= 6) |
1945 | error->derrmr = I915_READ(DERRMR); | |
1946 | ||
1947 | if (IS_VALLEYVIEW(dev)) | |
1948 | error->forcewake = I915_READ(FORCEWAKE_VLV); | |
1949 | else if (INTEL_INFO(dev)->gen >= 7) | |
1950 | error->forcewake = I915_READ(FORCEWAKE_MT); | |
1951 | else if (INTEL_INFO(dev)->gen == 6) | |
1952 | error->forcewake = I915_READ(FORCEWAKE); | |
1953 | ||
4f3308b9 PZ |
1954 | if (!HAS_PCH_SPLIT(dev)) |
1955 | for_each_pipe(pipe) | |
1956 | error->pipestat[pipe] = I915_READ(PIPESTAT(pipe)); | |
d27b1e0e | 1957 | |
33f3f518 | 1958 | if (INTEL_INFO(dev)->gen >= 6) { |
f406839f | 1959 | error->error = I915_READ(ERROR_GEN6); |
33f3f518 DV |
1960 | error->done_reg = I915_READ(DONE_REG); |
1961 | } | |
d27b1e0e | 1962 | |
71e172e8 BW |
1963 | if (INTEL_INFO(dev)->gen == 7) |
1964 | error->err_int = I915_READ(GEN7_ERR_INT); | |
1965 | ||
050ee91f BW |
1966 | i915_get_extra_instdone(dev, error->extra_instdone); |
1967 | ||
26b7c224 | 1968 | i915_gem_capture_buffers(dev_priv, error); |
748ebc60 | 1969 | i915_gem_record_fences(dev, error); |
52d39a21 | 1970 | i915_gem_record_rings(dev, error); |
9df30794 | 1971 | |
9df30794 CW |
1972 | do_gettimeofday(&error->time); |
1973 | ||
6ef3d427 | 1974 | error->overlay = intel_overlay_capture_error_state(dev); |
c4a1d9e4 | 1975 | error->display = intel_display_capture_error_state(dev); |
6ef3d427 | 1976 | |
99584db3 DV |
1977 | spin_lock_irqsave(&dev_priv->gpu_error.lock, flags); |
1978 | if (dev_priv->gpu_error.first_error == NULL) { | |
1979 | dev_priv->gpu_error.first_error = error; | |
9df30794 CW |
1980 | error = NULL; |
1981 | } | |
99584db3 | 1982 | spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags); |
9df30794 CW |
1983 | |
1984 | if (error) | |
742cbee8 | 1985 | i915_error_state_free(&error->ref); |
9df30794 CW |
1986 | } |
1987 | ||
1988 | void i915_destroy_error_state(struct drm_device *dev) | |
1989 | { | |
1990 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1991 | struct drm_i915_error_state *error; | |
6dc0e816 | 1992 | unsigned long flags; |
9df30794 | 1993 | |
99584db3 DV |
1994 | spin_lock_irqsave(&dev_priv->gpu_error.lock, flags); |
1995 | error = dev_priv->gpu_error.first_error; | |
1996 | dev_priv->gpu_error.first_error = NULL; | |
1997 | spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags); | |
9df30794 CW |
1998 | |
1999 | if (error) | |
742cbee8 | 2000 | kref_put(&error->ref, i915_error_state_free); |
63eeaf38 | 2001 | } |
3bd3c932 CW |
2002 | #else |
2003 | #define i915_capture_error_state(x) | |
2004 | #endif | |
63eeaf38 | 2005 | |
35aed2e6 | 2006 | static void i915_report_and_clear_eir(struct drm_device *dev) |
8a905236 JB |
2007 | { |
2008 | struct drm_i915_private *dev_priv = dev->dev_private; | |
bd9854f9 | 2009 | uint32_t instdone[I915_NUM_INSTDONE_REG]; |
8a905236 | 2010 | u32 eir = I915_READ(EIR); |
050ee91f | 2011 | int pipe, i; |
8a905236 | 2012 | |
35aed2e6 CW |
2013 | if (!eir) |
2014 | return; | |
8a905236 | 2015 | |
a70491cc | 2016 | pr_err("render error detected, EIR: 0x%08x\n", eir); |
8a905236 | 2017 | |
bd9854f9 BW |
2018 | i915_get_extra_instdone(dev, instdone); |
2019 | ||
8a905236 JB |
2020 | if (IS_G4X(dev)) { |
2021 | if (eir & (GM45_ERROR_MEM_PRIV | GM45_ERROR_CP_PRIV)) { | |
2022 | u32 ipeir = I915_READ(IPEIR_I965); | |
2023 | ||
a70491cc JP |
2024 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR_I965)); |
2025 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR_I965)); | |
050ee91f BW |
2026 | for (i = 0; i < ARRAY_SIZE(instdone); i++) |
2027 | pr_err(" INSTDONE_%d: 0x%08x\n", i, instdone[i]); | |
a70491cc | 2028 | pr_err(" INSTPS: 0x%08x\n", I915_READ(INSTPS)); |
a70491cc | 2029 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD_I965)); |
8a905236 | 2030 | I915_WRITE(IPEIR_I965, ipeir); |
3143a2bf | 2031 | POSTING_READ(IPEIR_I965); |
8a905236 JB |
2032 | } |
2033 | if (eir & GM45_ERROR_PAGE_TABLE) { | |
2034 | u32 pgtbl_err = I915_READ(PGTBL_ER); | |
a70491cc JP |
2035 | pr_err("page table error\n"); |
2036 | pr_err(" PGTBL_ER: 0x%08x\n", pgtbl_err); | |
8a905236 | 2037 | I915_WRITE(PGTBL_ER, pgtbl_err); |
3143a2bf | 2038 | POSTING_READ(PGTBL_ER); |
8a905236 JB |
2039 | } |
2040 | } | |
2041 | ||
a6c45cf0 | 2042 | if (!IS_GEN2(dev)) { |
8a905236 JB |
2043 | if (eir & I915_ERROR_PAGE_TABLE) { |
2044 | u32 pgtbl_err = I915_READ(PGTBL_ER); | |
a70491cc JP |
2045 | pr_err("page table error\n"); |
2046 | pr_err(" PGTBL_ER: 0x%08x\n", pgtbl_err); | |
8a905236 | 2047 | I915_WRITE(PGTBL_ER, pgtbl_err); |
3143a2bf | 2048 | POSTING_READ(PGTBL_ER); |
8a905236 JB |
2049 | } |
2050 | } | |
2051 | ||
2052 | if (eir & I915_ERROR_MEMORY_REFRESH) { | |
a70491cc | 2053 | pr_err("memory refresh error:\n"); |
9db4a9c7 | 2054 | for_each_pipe(pipe) |
a70491cc | 2055 | pr_err("pipe %c stat: 0x%08x\n", |
9db4a9c7 | 2056 | pipe_name(pipe), I915_READ(PIPESTAT(pipe))); |
8a905236 JB |
2057 | /* pipestat has already been acked */ |
2058 | } | |
2059 | if (eir & I915_ERROR_INSTRUCTION) { | |
a70491cc JP |
2060 | pr_err("instruction error\n"); |
2061 | pr_err(" INSTPM: 0x%08x\n", I915_READ(INSTPM)); | |
050ee91f BW |
2062 | for (i = 0; i < ARRAY_SIZE(instdone); i++) |
2063 | pr_err(" INSTDONE_%d: 0x%08x\n", i, instdone[i]); | |
a6c45cf0 | 2064 | if (INTEL_INFO(dev)->gen < 4) { |
8a905236 JB |
2065 | u32 ipeir = I915_READ(IPEIR); |
2066 | ||
a70491cc JP |
2067 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR)); |
2068 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR)); | |
a70491cc | 2069 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD)); |
8a905236 | 2070 | I915_WRITE(IPEIR, ipeir); |
3143a2bf | 2071 | POSTING_READ(IPEIR); |
8a905236 JB |
2072 | } else { |
2073 | u32 ipeir = I915_READ(IPEIR_I965); | |
2074 | ||
a70491cc JP |
2075 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR_I965)); |
2076 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR_I965)); | |
a70491cc | 2077 | pr_err(" INSTPS: 0x%08x\n", I915_READ(INSTPS)); |
a70491cc | 2078 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD_I965)); |
8a905236 | 2079 | I915_WRITE(IPEIR_I965, ipeir); |
3143a2bf | 2080 | POSTING_READ(IPEIR_I965); |
8a905236 JB |
2081 | } |
2082 | } | |
2083 | ||
2084 | I915_WRITE(EIR, eir); | |
3143a2bf | 2085 | POSTING_READ(EIR); |
8a905236 JB |
2086 | eir = I915_READ(EIR); |
2087 | if (eir) { | |
2088 | /* | |
2089 | * some errors might have become stuck, | |
2090 | * mask them. | |
2091 | */ | |
2092 | DRM_ERROR("EIR stuck: 0x%08x, masking\n", eir); | |
2093 | I915_WRITE(EMR, I915_READ(EMR) | eir); | |
2094 | I915_WRITE(IIR, I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
2095 | } | |
35aed2e6 CW |
2096 | } |
2097 | ||
2098 | /** | |
2099 | * i915_handle_error - handle an error interrupt | |
2100 | * @dev: drm device | |
2101 | * | |
2102 | * Do some basic checking of regsiter state at error interrupt time and | |
2103 | * dump it to the syslog. Also call i915_capture_error_state() to make | |
2104 | * sure we get a record and make it available in debugfs. Fire a uevent | |
2105 | * so userspace knows something bad happened (should trigger collection | |
2106 | * of a ring dump etc.). | |
2107 | */ | |
527f9e90 | 2108 | void i915_handle_error(struct drm_device *dev, bool wedged) |
35aed2e6 CW |
2109 | { |
2110 | struct drm_i915_private *dev_priv = dev->dev_private; | |
b4519513 CW |
2111 | struct intel_ring_buffer *ring; |
2112 | int i; | |
35aed2e6 CW |
2113 | |
2114 | i915_capture_error_state(dev); | |
2115 | i915_report_and_clear_eir(dev); | |
8a905236 | 2116 | |
ba1234d1 | 2117 | if (wedged) { |
f69061be DV |
2118 | atomic_set_mask(I915_RESET_IN_PROGRESS_FLAG, |
2119 | &dev_priv->gpu_error.reset_counter); | |
ba1234d1 | 2120 | |
11ed50ec | 2121 | /* |
1f83fee0 DV |
2122 | * Wakeup waiting processes so that the reset work item |
2123 | * doesn't deadlock trying to grab various locks. | |
11ed50ec | 2124 | */ |
b4519513 CW |
2125 | for_each_ring(ring, dev_priv, i) |
2126 | wake_up_all(&ring->irq_queue); | |
11ed50ec BG |
2127 | } |
2128 | ||
99584db3 | 2129 | queue_work(dev_priv->wq, &dev_priv->gpu_error.work); |
8a905236 JB |
2130 | } |
2131 | ||
21ad8330 | 2132 | static void __always_unused i915_pageflip_stall_check(struct drm_device *dev, int pipe) |
4e5359cd SF |
2133 | { |
2134 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2135 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
2136 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
05394f39 | 2137 | struct drm_i915_gem_object *obj; |
4e5359cd SF |
2138 | struct intel_unpin_work *work; |
2139 | unsigned long flags; | |
2140 | bool stall_detected; | |
2141 | ||
2142 | /* Ignore early vblank irqs */ | |
2143 | if (intel_crtc == NULL) | |
2144 | return; | |
2145 | ||
2146 | spin_lock_irqsave(&dev->event_lock, flags); | |
2147 | work = intel_crtc->unpin_work; | |
2148 | ||
e7d841ca CW |
2149 | if (work == NULL || |
2150 | atomic_read(&work->pending) >= INTEL_FLIP_COMPLETE || | |
2151 | !work->enable_stall_check) { | |
4e5359cd SF |
2152 | /* Either the pending flip IRQ arrived, or we're too early. Don't check */ |
2153 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
2154 | return; | |
2155 | } | |
2156 | ||
2157 | /* Potential stall - if we see that the flip has happened, assume a missed interrupt */ | |
05394f39 | 2158 | obj = work->pending_flip_obj; |
a6c45cf0 | 2159 | if (INTEL_INFO(dev)->gen >= 4) { |
9db4a9c7 | 2160 | int dspsurf = DSPSURF(intel_crtc->plane); |
446f2545 | 2161 | stall_detected = I915_HI_DISPBASE(I915_READ(dspsurf)) == |
f343c5f6 | 2162 | i915_gem_obj_ggtt_offset(obj); |
4e5359cd | 2163 | } else { |
9db4a9c7 | 2164 | int dspaddr = DSPADDR(intel_crtc->plane); |
f343c5f6 | 2165 | stall_detected = I915_READ(dspaddr) == (i915_gem_obj_ggtt_offset(obj) + |
01f2c773 | 2166 | crtc->y * crtc->fb->pitches[0] + |
4e5359cd SF |
2167 | crtc->x * crtc->fb->bits_per_pixel/8); |
2168 | } | |
2169 | ||
2170 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
2171 | ||
2172 | if (stall_detected) { | |
2173 | DRM_DEBUG_DRIVER("Pageflip stall detected\n"); | |
2174 | intel_prepare_page_flip(dev, intel_crtc->plane); | |
2175 | } | |
2176 | } | |
2177 | ||
42f52ef8 KP |
2178 | /* Called from drm generic code, passed 'crtc' which |
2179 | * we use as a pipe index | |
2180 | */ | |
f71d4af4 | 2181 | static int i915_enable_vblank(struct drm_device *dev, int pipe) |
0a3e67a4 JB |
2182 | { |
2183 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
e9d21d7f | 2184 | unsigned long irqflags; |
71e0ffa5 | 2185 | |
5eddb70b | 2186 | if (!i915_pipe_enabled(dev, pipe)) |
71e0ffa5 | 2187 | return -EINVAL; |
0a3e67a4 | 2188 | |
1ec14ad3 | 2189 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
f796cf8f | 2190 | if (INTEL_INFO(dev)->gen >= 4) |
7c463586 KP |
2191 | i915_enable_pipestat(dev_priv, pipe, |
2192 | PIPE_START_VBLANK_INTERRUPT_ENABLE); | |
e9d21d7f | 2193 | else |
7c463586 KP |
2194 | i915_enable_pipestat(dev_priv, pipe, |
2195 | PIPE_VBLANK_INTERRUPT_ENABLE); | |
8692d00e CW |
2196 | |
2197 | /* maintain vblank delivery even in deep C-states */ | |
2198 | if (dev_priv->info->gen == 3) | |
6b26c86d | 2199 | I915_WRITE(INSTPM, _MASKED_BIT_DISABLE(INSTPM_AGPBUSY_DIS)); |
1ec14ad3 | 2200 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
8692d00e | 2201 | |
0a3e67a4 JB |
2202 | return 0; |
2203 | } | |
2204 | ||
f71d4af4 | 2205 | static int ironlake_enable_vblank(struct drm_device *dev, int pipe) |
f796cf8f JB |
2206 | { |
2207 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2208 | unsigned long irqflags; | |
2209 | ||
2210 | if (!i915_pipe_enabled(dev, pipe)) | |
2211 | return -EINVAL; | |
2212 | ||
2213 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
2214 | ironlake_enable_display_irq(dev_priv, (pipe == 0) ? | |
0206e353 | 2215 | DE_PIPEA_VBLANK : DE_PIPEB_VBLANK); |
f796cf8f JB |
2216 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
2217 | ||
2218 | return 0; | |
2219 | } | |
2220 | ||
f71d4af4 | 2221 | static int ivybridge_enable_vblank(struct drm_device *dev, int pipe) |
b1f14ad0 JB |
2222 | { |
2223 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2224 | unsigned long irqflags; | |
2225 | ||
2226 | if (!i915_pipe_enabled(dev, pipe)) | |
2227 | return -EINVAL; | |
2228 | ||
2229 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
b615b57a CW |
2230 | ironlake_enable_display_irq(dev_priv, |
2231 | DE_PIPEA_VBLANK_IVB << (5 * pipe)); | |
b1f14ad0 JB |
2232 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
2233 | ||
2234 | return 0; | |
2235 | } | |
2236 | ||
7e231dbe JB |
2237 | static int valleyview_enable_vblank(struct drm_device *dev, int pipe) |
2238 | { | |
2239 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2240 | unsigned long irqflags; | |
31acc7f5 | 2241 | u32 imr; |
7e231dbe JB |
2242 | |
2243 | if (!i915_pipe_enabled(dev, pipe)) | |
2244 | return -EINVAL; | |
2245 | ||
2246 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
7e231dbe | 2247 | imr = I915_READ(VLV_IMR); |
31acc7f5 | 2248 | if (pipe == 0) |
7e231dbe | 2249 | imr &= ~I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT; |
31acc7f5 | 2250 | else |
7e231dbe | 2251 | imr &= ~I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; |
7e231dbe | 2252 | I915_WRITE(VLV_IMR, imr); |
31acc7f5 JB |
2253 | i915_enable_pipestat(dev_priv, pipe, |
2254 | PIPE_START_VBLANK_INTERRUPT_ENABLE); | |
7e231dbe JB |
2255 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
2256 | ||
2257 | return 0; | |
2258 | } | |
2259 | ||
42f52ef8 KP |
2260 | /* Called from drm generic code, passed 'crtc' which |
2261 | * we use as a pipe index | |
2262 | */ | |
f71d4af4 | 2263 | static void i915_disable_vblank(struct drm_device *dev, int pipe) |
0a3e67a4 JB |
2264 | { |
2265 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
e9d21d7f | 2266 | unsigned long irqflags; |
0a3e67a4 | 2267 | |
1ec14ad3 | 2268 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
8692d00e | 2269 | if (dev_priv->info->gen == 3) |
6b26c86d | 2270 | I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_AGPBUSY_DIS)); |
8692d00e | 2271 | |
f796cf8f JB |
2272 | i915_disable_pipestat(dev_priv, pipe, |
2273 | PIPE_VBLANK_INTERRUPT_ENABLE | | |
2274 | PIPE_START_VBLANK_INTERRUPT_ENABLE); | |
2275 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
2276 | } | |
2277 | ||
f71d4af4 | 2278 | static void ironlake_disable_vblank(struct drm_device *dev, int pipe) |
f796cf8f JB |
2279 | { |
2280 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2281 | unsigned long irqflags; | |
2282 | ||
2283 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
2284 | ironlake_disable_display_irq(dev_priv, (pipe == 0) ? | |
0206e353 | 2285 | DE_PIPEA_VBLANK : DE_PIPEB_VBLANK); |
1ec14ad3 | 2286 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
0a3e67a4 JB |
2287 | } |
2288 | ||
f71d4af4 | 2289 | static void ivybridge_disable_vblank(struct drm_device *dev, int pipe) |
b1f14ad0 JB |
2290 | { |
2291 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2292 | unsigned long irqflags; | |
2293 | ||
2294 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
b615b57a CW |
2295 | ironlake_disable_display_irq(dev_priv, |
2296 | DE_PIPEA_VBLANK_IVB << (pipe * 5)); | |
b1f14ad0 JB |
2297 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
2298 | } | |
2299 | ||
7e231dbe JB |
2300 | static void valleyview_disable_vblank(struct drm_device *dev, int pipe) |
2301 | { | |
2302 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2303 | unsigned long irqflags; | |
31acc7f5 | 2304 | u32 imr; |
7e231dbe JB |
2305 | |
2306 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
31acc7f5 JB |
2307 | i915_disable_pipestat(dev_priv, pipe, |
2308 | PIPE_START_VBLANK_INTERRUPT_ENABLE); | |
7e231dbe | 2309 | imr = I915_READ(VLV_IMR); |
31acc7f5 | 2310 | if (pipe == 0) |
7e231dbe | 2311 | imr |= I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT; |
31acc7f5 | 2312 | else |
7e231dbe | 2313 | imr |= I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; |
7e231dbe | 2314 | I915_WRITE(VLV_IMR, imr); |
7e231dbe JB |
2315 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
2316 | } | |
2317 | ||
893eead0 CW |
2318 | static u32 |
2319 | ring_last_seqno(struct intel_ring_buffer *ring) | |
852835f3 | 2320 | { |
893eead0 CW |
2321 | return list_entry(ring->request_list.prev, |
2322 | struct drm_i915_gem_request, list)->seqno; | |
2323 | } | |
2324 | ||
9107e9d2 CW |
2325 | static bool |
2326 | ring_idle(struct intel_ring_buffer *ring, u32 seqno) | |
2327 | { | |
2328 | return (list_empty(&ring->request_list) || | |
2329 | i915_seqno_passed(seqno, ring_last_seqno(ring))); | |
f65d9421 BG |
2330 | } |
2331 | ||
6274f212 CW |
2332 | static struct intel_ring_buffer * |
2333 | semaphore_waits_for(struct intel_ring_buffer *ring, u32 *seqno) | |
a24a11e6 CW |
2334 | { |
2335 | struct drm_i915_private *dev_priv = ring->dev->dev_private; | |
6274f212 | 2336 | u32 cmd, ipehr, acthd, acthd_min; |
a24a11e6 CW |
2337 | |
2338 | ipehr = I915_READ(RING_IPEHR(ring->mmio_base)); | |
2339 | if ((ipehr & ~(0x3 << 16)) != | |
2340 | (MI_SEMAPHORE_MBOX | MI_SEMAPHORE_COMPARE | MI_SEMAPHORE_REGISTER)) | |
6274f212 | 2341 | return NULL; |
a24a11e6 CW |
2342 | |
2343 | /* ACTHD is likely pointing to the dword after the actual command, | |
2344 | * so scan backwards until we find the MBOX. | |
2345 | */ | |
6274f212 | 2346 | acthd = intel_ring_get_active_head(ring) & HEAD_ADDR; |
a24a11e6 CW |
2347 | acthd_min = max((int)acthd - 3 * 4, 0); |
2348 | do { | |
2349 | cmd = ioread32(ring->virtual_start + acthd); | |
2350 | if (cmd == ipehr) | |
2351 | break; | |
2352 | ||
2353 | acthd -= 4; | |
2354 | if (acthd < acthd_min) | |
6274f212 | 2355 | return NULL; |
a24a11e6 CW |
2356 | } while (1); |
2357 | ||
6274f212 CW |
2358 | *seqno = ioread32(ring->virtual_start+acthd+4)+1; |
2359 | return &dev_priv->ring[(ring->id + (((ipehr >> 17) & 1) + 1)) % 3]; | |
a24a11e6 CW |
2360 | } |
2361 | ||
6274f212 CW |
2362 | static int semaphore_passed(struct intel_ring_buffer *ring) |
2363 | { | |
2364 | struct drm_i915_private *dev_priv = ring->dev->dev_private; | |
2365 | struct intel_ring_buffer *signaller; | |
2366 | u32 seqno, ctl; | |
2367 | ||
2368 | ring->hangcheck.deadlock = true; | |
2369 | ||
2370 | signaller = semaphore_waits_for(ring, &seqno); | |
2371 | if (signaller == NULL || signaller->hangcheck.deadlock) | |
2372 | return -1; | |
2373 | ||
2374 | /* cursory check for an unkickable deadlock */ | |
2375 | ctl = I915_READ_CTL(signaller); | |
2376 | if (ctl & RING_WAIT_SEMAPHORE && semaphore_passed(signaller) < 0) | |
2377 | return -1; | |
2378 | ||
2379 | return i915_seqno_passed(signaller->get_seqno(signaller, false), seqno); | |
2380 | } | |
2381 | ||
2382 | static void semaphore_clear_deadlocks(struct drm_i915_private *dev_priv) | |
2383 | { | |
2384 | struct intel_ring_buffer *ring; | |
2385 | int i; | |
2386 | ||
2387 | for_each_ring(ring, dev_priv, i) | |
2388 | ring->hangcheck.deadlock = false; | |
2389 | } | |
2390 | ||
ad8beaea MK |
2391 | static enum intel_ring_hangcheck_action |
2392 | ring_stuck(struct intel_ring_buffer *ring, u32 acthd) | |
1ec14ad3 CW |
2393 | { |
2394 | struct drm_device *dev = ring->dev; | |
2395 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9107e9d2 CW |
2396 | u32 tmp; |
2397 | ||
6274f212 CW |
2398 | if (ring->hangcheck.acthd != acthd) |
2399 | return active; | |
2400 | ||
9107e9d2 | 2401 | if (IS_GEN2(dev)) |
6274f212 | 2402 | return hung; |
9107e9d2 CW |
2403 | |
2404 | /* Is the chip hanging on a WAIT_FOR_EVENT? | |
2405 | * If so we can simply poke the RB_WAIT bit | |
2406 | * and break the hang. This should work on | |
2407 | * all but the second generation chipsets. | |
2408 | */ | |
2409 | tmp = I915_READ_CTL(ring); | |
1ec14ad3 CW |
2410 | if (tmp & RING_WAIT) { |
2411 | DRM_ERROR("Kicking stuck wait on %s\n", | |
2412 | ring->name); | |
2413 | I915_WRITE_CTL(ring, tmp); | |
6274f212 CW |
2414 | return kick; |
2415 | } | |
2416 | ||
2417 | if (INTEL_INFO(dev)->gen >= 6 && tmp & RING_WAIT_SEMAPHORE) { | |
2418 | switch (semaphore_passed(ring)) { | |
2419 | default: | |
2420 | return hung; | |
2421 | case 1: | |
2422 | DRM_ERROR("Kicking stuck semaphore on %s\n", | |
2423 | ring->name); | |
2424 | I915_WRITE_CTL(ring, tmp); | |
2425 | return kick; | |
2426 | case 0: | |
2427 | return wait; | |
2428 | } | |
9107e9d2 | 2429 | } |
ed5cbb03 | 2430 | |
6274f212 | 2431 | return hung; |
ed5cbb03 MK |
2432 | } |
2433 | ||
f65d9421 BG |
2434 | /** |
2435 | * This is called when the chip hasn't reported back with completed | |
05407ff8 MK |
2436 | * batchbuffers in a long time. We keep track per ring seqno progress and |
2437 | * if there are no progress, hangcheck score for that ring is increased. | |
2438 | * Further, acthd is inspected to see if the ring is stuck. On stuck case | |
2439 | * we kick the ring. If we see no progress on three subsequent calls | |
2440 | * we assume chip is wedged and try to fix it by resetting the chip. | |
f65d9421 BG |
2441 | */ |
2442 | void i915_hangcheck_elapsed(unsigned long data) | |
2443 | { | |
2444 | struct drm_device *dev = (struct drm_device *)data; | |
2445 | drm_i915_private_t *dev_priv = dev->dev_private; | |
b4519513 | 2446 | struct intel_ring_buffer *ring; |
b4519513 | 2447 | int i; |
05407ff8 | 2448 | int busy_count = 0, rings_hung = 0; |
9107e9d2 CW |
2449 | bool stuck[I915_NUM_RINGS] = { 0 }; |
2450 | #define BUSY 1 | |
2451 | #define KICK 5 | |
2452 | #define HUNG 20 | |
2453 | #define FIRE 30 | |
893eead0 | 2454 | |
3e0dc6b0 BW |
2455 | if (!i915_enable_hangcheck) |
2456 | return; | |
2457 | ||
b4519513 | 2458 | for_each_ring(ring, dev_priv, i) { |
05407ff8 | 2459 | u32 seqno, acthd; |
9107e9d2 | 2460 | bool busy = true; |
05407ff8 | 2461 | |
6274f212 CW |
2462 | semaphore_clear_deadlocks(dev_priv); |
2463 | ||
05407ff8 MK |
2464 | seqno = ring->get_seqno(ring, false); |
2465 | acthd = intel_ring_get_active_head(ring); | |
b4519513 | 2466 | |
9107e9d2 CW |
2467 | if (ring->hangcheck.seqno == seqno) { |
2468 | if (ring_idle(ring, seqno)) { | |
2469 | if (waitqueue_active(&ring->irq_queue)) { | |
2470 | /* Issue a wake-up to catch stuck h/w. */ | |
2471 | DRM_ERROR("Hangcheck timer elapsed... %s idle\n", | |
2472 | ring->name); | |
2473 | wake_up_all(&ring->irq_queue); | |
2474 | ring->hangcheck.score += HUNG; | |
2475 | } else | |
2476 | busy = false; | |
05407ff8 | 2477 | } else { |
9107e9d2 CW |
2478 | int score; |
2479 | ||
6274f212 CW |
2480 | /* We always increment the hangcheck score |
2481 | * if the ring is busy and still processing | |
2482 | * the same request, so that no single request | |
2483 | * can run indefinitely (such as a chain of | |
2484 | * batches). The only time we do not increment | |
2485 | * the hangcheck score on this ring, if this | |
2486 | * ring is in a legitimate wait for another | |
2487 | * ring. In that case the waiting ring is a | |
2488 | * victim and we want to be sure we catch the | |
2489 | * right culprit. Then every time we do kick | |
2490 | * the ring, add a small increment to the | |
2491 | * score so that we can catch a batch that is | |
2492 | * being repeatedly kicked and so responsible | |
2493 | * for stalling the machine. | |
2494 | */ | |
ad8beaea MK |
2495 | ring->hangcheck.action = ring_stuck(ring, |
2496 | acthd); | |
2497 | ||
2498 | switch (ring->hangcheck.action) { | |
6274f212 CW |
2499 | case wait: |
2500 | score = 0; | |
2501 | break; | |
2502 | case active: | |
9107e9d2 | 2503 | score = BUSY; |
6274f212 CW |
2504 | break; |
2505 | case kick: | |
2506 | score = KICK; | |
2507 | break; | |
2508 | case hung: | |
2509 | score = HUNG; | |
2510 | stuck[i] = true; | |
2511 | break; | |
2512 | } | |
9107e9d2 | 2513 | ring->hangcheck.score += score; |
05407ff8 | 2514 | } |
9107e9d2 CW |
2515 | } else { |
2516 | /* Gradually reduce the count so that we catch DoS | |
2517 | * attempts across multiple batches. | |
2518 | */ | |
2519 | if (ring->hangcheck.score > 0) | |
2520 | ring->hangcheck.score--; | |
d1e61e7f CW |
2521 | } |
2522 | ||
05407ff8 MK |
2523 | ring->hangcheck.seqno = seqno; |
2524 | ring->hangcheck.acthd = acthd; | |
9107e9d2 | 2525 | busy_count += busy; |
893eead0 | 2526 | } |
b9201c14 | 2527 | |
92cab734 | 2528 | for_each_ring(ring, dev_priv, i) { |
9107e9d2 | 2529 | if (ring->hangcheck.score > FIRE) { |
acd78c11 | 2530 | DRM_ERROR("%s on %s\n", |
05407ff8 | 2531 | stuck[i] ? "stuck" : "no progress", |
a43adf07 CW |
2532 | ring->name); |
2533 | rings_hung++; | |
92cab734 MK |
2534 | } |
2535 | } | |
2536 | ||
05407ff8 MK |
2537 | if (rings_hung) |
2538 | return i915_handle_error(dev, true); | |
f65d9421 | 2539 | |
05407ff8 MK |
2540 | if (busy_count) |
2541 | /* Reset timer case chip hangs without another request | |
2542 | * being added */ | |
2543 | mod_timer(&dev_priv->gpu_error.hangcheck_timer, | |
2544 | round_jiffies_up(jiffies + | |
2545 | DRM_I915_HANGCHECK_JIFFIES)); | |
f65d9421 BG |
2546 | } |
2547 | ||
91738a95 PZ |
2548 | static void ibx_irq_preinstall(struct drm_device *dev) |
2549 | { | |
2550 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2551 | ||
2552 | if (HAS_PCH_NOP(dev)) | |
2553 | return; | |
2554 | ||
2555 | /* south display irq */ | |
2556 | I915_WRITE(SDEIMR, 0xffffffff); | |
2557 | /* | |
2558 | * SDEIER is also touched by the interrupt handler to work around missed | |
2559 | * PCH interrupts. Hence we can't update it after the interrupt handler | |
2560 | * is enabled - instead we unconditionally enable all PCH interrupt | |
2561 | * sources here, but then only unmask them as needed with SDEIMR. | |
2562 | */ | |
2563 | I915_WRITE(SDEIER, 0xffffffff); | |
2564 | POSTING_READ(SDEIER); | |
2565 | } | |
2566 | ||
1da177e4 LT |
2567 | /* drm_dma.h hooks |
2568 | */ | |
f71d4af4 | 2569 | static void ironlake_irq_preinstall(struct drm_device *dev) |
036a4a7d ZW |
2570 | { |
2571 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2572 | ||
4697995b JB |
2573 | atomic_set(&dev_priv->irq_received, 0); |
2574 | ||
036a4a7d | 2575 | I915_WRITE(HWSTAM, 0xeffe); |
bdfcdb63 | 2576 | |
036a4a7d ZW |
2577 | /* XXX hotplug from PCH */ |
2578 | ||
2579 | I915_WRITE(DEIMR, 0xffffffff); | |
2580 | I915_WRITE(DEIER, 0x0); | |
3143a2bf | 2581 | POSTING_READ(DEIER); |
036a4a7d ZW |
2582 | |
2583 | /* and GT */ | |
2584 | I915_WRITE(GTIMR, 0xffffffff); | |
2585 | I915_WRITE(GTIER, 0x0); | |
3143a2bf | 2586 | POSTING_READ(GTIER); |
c650156a | 2587 | |
91738a95 | 2588 | ibx_irq_preinstall(dev); |
7d99163d BW |
2589 | } |
2590 | ||
2591 | static void ivybridge_irq_preinstall(struct drm_device *dev) | |
2592 | { | |
2593 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2594 | ||
2595 | atomic_set(&dev_priv->irq_received, 0); | |
2596 | ||
2597 | I915_WRITE(HWSTAM, 0xeffe); | |
2598 | ||
2599 | /* XXX hotplug from PCH */ | |
2600 | ||
2601 | I915_WRITE(DEIMR, 0xffffffff); | |
2602 | I915_WRITE(DEIER, 0x0); | |
2603 | POSTING_READ(DEIER); | |
2604 | ||
2605 | /* and GT */ | |
2606 | I915_WRITE(GTIMR, 0xffffffff); | |
2607 | I915_WRITE(GTIER, 0x0); | |
2608 | POSTING_READ(GTIER); | |
2609 | ||
eda63ffb BW |
2610 | /* Power management */ |
2611 | I915_WRITE(GEN6_PMIMR, 0xffffffff); | |
2612 | I915_WRITE(GEN6_PMIER, 0x0); | |
2613 | POSTING_READ(GEN6_PMIER); | |
2614 | ||
91738a95 | 2615 | ibx_irq_preinstall(dev); |
036a4a7d ZW |
2616 | } |
2617 | ||
7e231dbe JB |
2618 | static void valleyview_irq_preinstall(struct drm_device *dev) |
2619 | { | |
2620 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2621 | int pipe; | |
2622 | ||
2623 | atomic_set(&dev_priv->irq_received, 0); | |
2624 | ||
7e231dbe JB |
2625 | /* VLV magic */ |
2626 | I915_WRITE(VLV_IMR, 0); | |
2627 | I915_WRITE(RING_IMR(RENDER_RING_BASE), 0); | |
2628 | I915_WRITE(RING_IMR(GEN6_BSD_RING_BASE), 0); | |
2629 | I915_WRITE(RING_IMR(BLT_RING_BASE), 0); | |
2630 | ||
7e231dbe JB |
2631 | /* and GT */ |
2632 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
2633 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
2634 | I915_WRITE(GTIMR, 0xffffffff); | |
2635 | I915_WRITE(GTIER, 0x0); | |
2636 | POSTING_READ(GTIER); | |
2637 | ||
2638 | I915_WRITE(DPINVGTT, 0xff); | |
2639 | ||
2640 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
2641 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
2642 | for_each_pipe(pipe) | |
2643 | I915_WRITE(PIPESTAT(pipe), 0xffff); | |
2644 | I915_WRITE(VLV_IIR, 0xffffffff); | |
2645 | I915_WRITE(VLV_IMR, 0xffffffff); | |
2646 | I915_WRITE(VLV_IER, 0x0); | |
2647 | POSTING_READ(VLV_IER); | |
2648 | } | |
2649 | ||
82a28bcf | 2650 | static void ibx_hpd_irq_setup(struct drm_device *dev) |
7fe0b973 KP |
2651 | { |
2652 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
82a28bcf DV |
2653 | struct drm_mode_config *mode_config = &dev->mode_config; |
2654 | struct intel_encoder *intel_encoder; | |
2655 | u32 mask = ~I915_READ(SDEIMR); | |
2656 | u32 hotplug; | |
2657 | ||
2658 | if (HAS_PCH_IBX(dev)) { | |
995e6b3d | 2659 | mask &= ~SDE_HOTPLUG_MASK; |
82a28bcf | 2660 | list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head) |
cd569aed EE |
2661 | if (dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_ENABLED) |
2662 | mask |= hpd_ibx[intel_encoder->hpd_pin]; | |
82a28bcf | 2663 | } else { |
995e6b3d | 2664 | mask &= ~SDE_HOTPLUG_MASK_CPT; |
82a28bcf | 2665 | list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head) |
cd569aed EE |
2666 | if (dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_ENABLED) |
2667 | mask |= hpd_cpt[intel_encoder->hpd_pin]; | |
82a28bcf | 2668 | } |
7fe0b973 | 2669 | |
82a28bcf DV |
2670 | I915_WRITE(SDEIMR, ~mask); |
2671 | ||
2672 | /* | |
2673 | * Enable digital hotplug on the PCH, and configure the DP short pulse | |
2674 | * duration to 2ms (which is the minimum in the Display Port spec) | |
2675 | * | |
2676 | * This register is the same on all known PCH chips. | |
2677 | */ | |
7fe0b973 KP |
2678 | hotplug = I915_READ(PCH_PORT_HOTPLUG); |
2679 | hotplug &= ~(PORTD_PULSE_DURATION_MASK|PORTC_PULSE_DURATION_MASK|PORTB_PULSE_DURATION_MASK); | |
2680 | hotplug |= PORTD_HOTPLUG_ENABLE | PORTD_PULSE_DURATION_2ms; | |
2681 | hotplug |= PORTC_HOTPLUG_ENABLE | PORTC_PULSE_DURATION_2ms; | |
2682 | hotplug |= PORTB_HOTPLUG_ENABLE | PORTB_PULSE_DURATION_2ms; | |
2683 | I915_WRITE(PCH_PORT_HOTPLUG, hotplug); | |
2684 | } | |
2685 | ||
d46da437 PZ |
2686 | static void ibx_irq_postinstall(struct drm_device *dev) |
2687 | { | |
2688 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
82a28bcf | 2689 | u32 mask; |
e5868a31 | 2690 | |
692a04cf DV |
2691 | if (HAS_PCH_NOP(dev)) |
2692 | return; | |
2693 | ||
8664281b PZ |
2694 | if (HAS_PCH_IBX(dev)) { |
2695 | mask = SDE_GMBUS | SDE_AUX_MASK | SDE_TRANSB_FIFO_UNDER | | |
de032bf4 | 2696 | SDE_TRANSA_FIFO_UNDER | SDE_POISON; |
8664281b PZ |
2697 | } else { |
2698 | mask = SDE_GMBUS_CPT | SDE_AUX_MASK_CPT | SDE_ERROR_CPT; | |
2699 | ||
2700 | I915_WRITE(SERR_INT, I915_READ(SERR_INT)); | |
2701 | } | |
ab5c608b | 2702 | |
d46da437 PZ |
2703 | I915_WRITE(SDEIIR, I915_READ(SDEIIR)); |
2704 | I915_WRITE(SDEIMR, ~mask); | |
d46da437 PZ |
2705 | } |
2706 | ||
f71d4af4 | 2707 | static int ironlake_irq_postinstall(struct drm_device *dev) |
036a4a7d | 2708 | { |
4bc9d430 DV |
2709 | unsigned long irqflags; |
2710 | ||
036a4a7d ZW |
2711 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
2712 | /* enable kind of interrupts always enabled */ | |
013d5aa2 | 2713 | u32 display_mask = DE_MASTER_IRQ_CONTROL | DE_GSE | DE_PCH_EVENT | |
ce99c256 | 2714 | DE_PLANEA_FLIP_DONE | DE_PLANEB_FLIP_DONE | |
8664281b | 2715 | DE_AUX_CHANNEL_A | DE_PIPEB_FIFO_UNDERRUN | |
de032bf4 | 2716 | DE_PIPEA_FIFO_UNDERRUN | DE_POISON; |
cc609d5d | 2717 | u32 gt_irqs; |
036a4a7d | 2718 | |
1ec14ad3 | 2719 | dev_priv->irq_mask = ~display_mask; |
036a4a7d ZW |
2720 | |
2721 | /* should always can generate irq */ | |
2722 | I915_WRITE(DEIIR, I915_READ(DEIIR)); | |
1ec14ad3 | 2723 | I915_WRITE(DEIMR, dev_priv->irq_mask); |
6005ce42 DV |
2724 | I915_WRITE(DEIER, display_mask | |
2725 | DE_PIPEA_VBLANK | DE_PIPEB_VBLANK | DE_PCU_EVENT); | |
3143a2bf | 2726 | POSTING_READ(DEIER); |
036a4a7d | 2727 | |
1ec14ad3 | 2728 | dev_priv->gt_irq_mask = ~0; |
036a4a7d ZW |
2729 | |
2730 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
1ec14ad3 | 2731 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); |
881f47b6 | 2732 | |
cc609d5d BW |
2733 | gt_irqs = GT_RENDER_USER_INTERRUPT; |
2734 | ||
1ec14ad3 | 2735 | if (IS_GEN6(dev)) |
cc609d5d | 2736 | gt_irqs |= GT_BLT_USER_INTERRUPT | GT_BSD_USER_INTERRUPT; |
1ec14ad3 | 2737 | else |
cc609d5d BW |
2738 | gt_irqs |= GT_RENDER_PIPECTL_NOTIFY_INTERRUPT | |
2739 | ILK_BSD_USER_INTERRUPT; | |
2740 | ||
2741 | I915_WRITE(GTIER, gt_irqs); | |
3143a2bf | 2742 | POSTING_READ(GTIER); |
036a4a7d | 2743 | |
d46da437 | 2744 | ibx_irq_postinstall(dev); |
7fe0b973 | 2745 | |
f97108d1 | 2746 | if (IS_IRONLAKE_M(dev)) { |
6005ce42 DV |
2747 | /* Enable PCU event interrupts |
2748 | * | |
2749 | * spinlocking not required here for correctness since interrupt | |
4bc9d430 DV |
2750 | * setup is guaranteed to run in single-threaded context. But we |
2751 | * need it to make the assert_spin_locked happy. */ | |
2752 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
f97108d1 | 2753 | ironlake_enable_display_irq(dev_priv, DE_PCU_EVENT); |
4bc9d430 | 2754 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
f97108d1 JB |
2755 | } |
2756 | ||
036a4a7d ZW |
2757 | return 0; |
2758 | } | |
2759 | ||
f71d4af4 | 2760 | static int ivybridge_irq_postinstall(struct drm_device *dev) |
b1f14ad0 JB |
2761 | { |
2762 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2763 | /* enable kind of interrupts always enabled */ | |
b615b57a CW |
2764 | u32 display_mask = |
2765 | DE_MASTER_IRQ_CONTROL | DE_GSE_IVB | DE_PCH_EVENT_IVB | | |
2766 | DE_PLANEC_FLIP_DONE_IVB | | |
2767 | DE_PLANEB_FLIP_DONE_IVB | | |
ce99c256 | 2768 | DE_PLANEA_FLIP_DONE_IVB | |
8664281b PZ |
2769 | DE_AUX_CHANNEL_A_IVB | |
2770 | DE_ERR_INT_IVB; | |
12638c57 | 2771 | u32 pm_irqs = GEN6_PM_RPS_EVENTS; |
cc609d5d | 2772 | u32 gt_irqs; |
b1f14ad0 | 2773 | |
b1f14ad0 JB |
2774 | dev_priv->irq_mask = ~display_mask; |
2775 | ||
2776 | /* should always can generate irq */ | |
8664281b | 2777 | I915_WRITE(GEN7_ERR_INT, I915_READ(GEN7_ERR_INT)); |
b1f14ad0 JB |
2778 | I915_WRITE(DEIIR, I915_READ(DEIIR)); |
2779 | I915_WRITE(DEIMR, dev_priv->irq_mask); | |
b615b57a CW |
2780 | I915_WRITE(DEIER, |
2781 | display_mask | | |
2782 | DE_PIPEC_VBLANK_IVB | | |
2783 | DE_PIPEB_VBLANK_IVB | | |
2784 | DE_PIPEA_VBLANK_IVB); | |
b1f14ad0 JB |
2785 | POSTING_READ(DEIER); |
2786 | ||
cc609d5d | 2787 | dev_priv->gt_irq_mask = ~GT_RENDER_L3_PARITY_ERROR_INTERRUPT; |
b1f14ad0 JB |
2788 | |
2789 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
2790 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); | |
2791 | ||
cc609d5d BW |
2792 | gt_irqs = GT_RENDER_USER_INTERRUPT | GT_BSD_USER_INTERRUPT | |
2793 | GT_BLT_USER_INTERRUPT | GT_RENDER_L3_PARITY_ERROR_INTERRUPT; | |
2794 | I915_WRITE(GTIER, gt_irqs); | |
b1f14ad0 JB |
2795 | POSTING_READ(GTIER); |
2796 | ||
12638c57 BW |
2797 | I915_WRITE(GEN6_PMIIR, I915_READ(GEN6_PMIIR)); |
2798 | if (HAS_VEBOX(dev)) | |
2799 | pm_irqs |= PM_VEBOX_USER_INTERRUPT | | |
2800 | PM_VEBOX_CS_ERROR_INTERRUPT; | |
2801 | ||
2802 | /* Our enable/disable rps functions may touch these registers so | |
2803 | * make sure to set a known state for only the non-RPS bits. | |
2804 | * The RMW is extra paranoia since this should be called after being set | |
2805 | * to a known state in preinstall. | |
2806 | * */ | |
2807 | I915_WRITE(GEN6_PMIMR, | |
2808 | (I915_READ(GEN6_PMIMR) | ~GEN6_PM_RPS_EVENTS) & ~pm_irqs); | |
2809 | I915_WRITE(GEN6_PMIER, | |
2810 | (I915_READ(GEN6_PMIER) & GEN6_PM_RPS_EVENTS) | pm_irqs); | |
2811 | POSTING_READ(GEN6_PMIER); | |
eda63ffb | 2812 | |
d46da437 | 2813 | ibx_irq_postinstall(dev); |
7fe0b973 | 2814 | |
b1f14ad0 JB |
2815 | return 0; |
2816 | } | |
2817 | ||
7e231dbe JB |
2818 | static int valleyview_irq_postinstall(struct drm_device *dev) |
2819 | { | |
2820 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
cc609d5d | 2821 | u32 gt_irqs; |
7e231dbe | 2822 | u32 enable_mask; |
31acc7f5 | 2823 | u32 pipestat_enable = PLANE_FLIP_DONE_INT_EN_VLV; |
b79480ba | 2824 | unsigned long irqflags; |
7e231dbe JB |
2825 | |
2826 | enable_mask = I915_DISPLAY_PORT_INTERRUPT; | |
31acc7f5 JB |
2827 | enable_mask |= I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | |
2828 | I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT | | |
2829 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
7e231dbe JB |
2830 | I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; |
2831 | ||
31acc7f5 JB |
2832 | /* |
2833 | *Leave vblank interrupts masked initially. enable/disable will | |
2834 | * toggle them based on usage. | |
2835 | */ | |
2836 | dev_priv->irq_mask = (~enable_mask) | | |
2837 | I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT | | |
2838 | I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; | |
7e231dbe | 2839 | |
20afbda2 DV |
2840 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
2841 | POSTING_READ(PORT_HOTPLUG_EN); | |
2842 | ||
7e231dbe JB |
2843 | I915_WRITE(VLV_IMR, dev_priv->irq_mask); |
2844 | I915_WRITE(VLV_IER, enable_mask); | |
2845 | I915_WRITE(VLV_IIR, 0xffffffff); | |
2846 | I915_WRITE(PIPESTAT(0), 0xffff); | |
2847 | I915_WRITE(PIPESTAT(1), 0xffff); | |
2848 | POSTING_READ(VLV_IER); | |
2849 | ||
b79480ba DV |
2850 | /* Interrupt setup is already guaranteed to be single-threaded, this is |
2851 | * just to make the assert_spin_locked check happy. */ | |
2852 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
31acc7f5 | 2853 | i915_enable_pipestat(dev_priv, 0, pipestat_enable); |
515ac2bb | 2854 | i915_enable_pipestat(dev_priv, 0, PIPE_GMBUS_EVENT_ENABLE); |
31acc7f5 | 2855 | i915_enable_pipestat(dev_priv, 1, pipestat_enable); |
b79480ba | 2856 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
31acc7f5 | 2857 | |
7e231dbe JB |
2858 | I915_WRITE(VLV_IIR, 0xffffffff); |
2859 | I915_WRITE(VLV_IIR, 0xffffffff); | |
2860 | ||
7e231dbe | 2861 | I915_WRITE(GTIIR, I915_READ(GTIIR)); |
31acc7f5 | 2862 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); |
3bcedbe5 | 2863 | |
cc609d5d BW |
2864 | gt_irqs = GT_RENDER_USER_INTERRUPT | GT_BSD_USER_INTERRUPT | |
2865 | GT_BLT_USER_INTERRUPT; | |
2866 | I915_WRITE(GTIER, gt_irqs); | |
7e231dbe JB |
2867 | POSTING_READ(GTIER); |
2868 | ||
2869 | /* ack & enable invalid PTE error interrupts */ | |
2870 | #if 0 /* FIXME: add support to irq handler for checking these bits */ | |
2871 | I915_WRITE(DPINVGTT, DPINVGTT_STATUS_MASK); | |
2872 | I915_WRITE(DPINVGTT, DPINVGTT_EN_MASK); | |
2873 | #endif | |
2874 | ||
2875 | I915_WRITE(VLV_MASTER_IER, MASTER_INTERRUPT_ENABLE); | |
20afbda2 DV |
2876 | |
2877 | return 0; | |
2878 | } | |
2879 | ||
7e231dbe JB |
2880 | static void valleyview_irq_uninstall(struct drm_device *dev) |
2881 | { | |
2882 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2883 | int pipe; | |
2884 | ||
2885 | if (!dev_priv) | |
2886 | return; | |
2887 | ||
ac4c16c5 EE |
2888 | del_timer_sync(&dev_priv->hotplug_reenable_timer); |
2889 | ||
7e231dbe JB |
2890 | for_each_pipe(pipe) |
2891 | I915_WRITE(PIPESTAT(pipe), 0xffff); | |
2892 | ||
2893 | I915_WRITE(HWSTAM, 0xffffffff); | |
2894 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
2895 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
2896 | for_each_pipe(pipe) | |
2897 | I915_WRITE(PIPESTAT(pipe), 0xffff); | |
2898 | I915_WRITE(VLV_IIR, 0xffffffff); | |
2899 | I915_WRITE(VLV_IMR, 0xffffffff); | |
2900 | I915_WRITE(VLV_IER, 0x0); | |
2901 | POSTING_READ(VLV_IER); | |
2902 | } | |
2903 | ||
f71d4af4 | 2904 | static void ironlake_irq_uninstall(struct drm_device *dev) |
036a4a7d ZW |
2905 | { |
2906 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
4697995b JB |
2907 | |
2908 | if (!dev_priv) | |
2909 | return; | |
2910 | ||
ac4c16c5 EE |
2911 | del_timer_sync(&dev_priv->hotplug_reenable_timer); |
2912 | ||
036a4a7d ZW |
2913 | I915_WRITE(HWSTAM, 0xffffffff); |
2914 | ||
2915 | I915_WRITE(DEIMR, 0xffffffff); | |
2916 | I915_WRITE(DEIER, 0x0); | |
2917 | I915_WRITE(DEIIR, I915_READ(DEIIR)); | |
8664281b PZ |
2918 | if (IS_GEN7(dev)) |
2919 | I915_WRITE(GEN7_ERR_INT, I915_READ(GEN7_ERR_INT)); | |
036a4a7d ZW |
2920 | |
2921 | I915_WRITE(GTIMR, 0xffffffff); | |
2922 | I915_WRITE(GTIER, 0x0); | |
2923 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
192aac1f | 2924 | |
ab5c608b BW |
2925 | if (HAS_PCH_NOP(dev)) |
2926 | return; | |
2927 | ||
192aac1f KP |
2928 | I915_WRITE(SDEIMR, 0xffffffff); |
2929 | I915_WRITE(SDEIER, 0x0); | |
2930 | I915_WRITE(SDEIIR, I915_READ(SDEIIR)); | |
8664281b PZ |
2931 | if (HAS_PCH_CPT(dev) || HAS_PCH_LPT(dev)) |
2932 | I915_WRITE(SERR_INT, I915_READ(SERR_INT)); | |
036a4a7d ZW |
2933 | } |
2934 | ||
a266c7d5 | 2935 | static void i8xx_irq_preinstall(struct drm_device * dev) |
1da177e4 LT |
2936 | { |
2937 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
9db4a9c7 | 2938 | int pipe; |
91e3738e | 2939 | |
a266c7d5 | 2940 | atomic_set(&dev_priv->irq_received, 0); |
5ca58282 | 2941 | |
9db4a9c7 JB |
2942 | for_each_pipe(pipe) |
2943 | I915_WRITE(PIPESTAT(pipe), 0); | |
a266c7d5 CW |
2944 | I915_WRITE16(IMR, 0xffff); |
2945 | I915_WRITE16(IER, 0x0); | |
2946 | POSTING_READ16(IER); | |
c2798b19 CW |
2947 | } |
2948 | ||
2949 | static int i8xx_irq_postinstall(struct drm_device *dev) | |
2950 | { | |
2951 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2952 | ||
c2798b19 CW |
2953 | I915_WRITE16(EMR, |
2954 | ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH)); | |
2955 | ||
2956 | /* Unmask the interrupts that we always want on. */ | |
2957 | dev_priv->irq_mask = | |
2958 | ~(I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
2959 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
2960 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
2961 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | | |
2962 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
2963 | I915_WRITE16(IMR, dev_priv->irq_mask); | |
2964 | ||
2965 | I915_WRITE16(IER, | |
2966 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
2967 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
2968 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT | | |
2969 | I915_USER_INTERRUPT); | |
2970 | POSTING_READ16(IER); | |
2971 | ||
2972 | return 0; | |
2973 | } | |
2974 | ||
90a72f87 VS |
2975 | /* |
2976 | * Returns true when a page flip has completed. | |
2977 | */ | |
2978 | static bool i8xx_handle_vblank(struct drm_device *dev, | |
2979 | int pipe, u16 iir) | |
2980 | { | |
2981 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2982 | u16 flip_pending = DISPLAY_PLANE_FLIP_PENDING(pipe); | |
2983 | ||
2984 | if (!drm_handle_vblank(dev, pipe)) | |
2985 | return false; | |
2986 | ||
2987 | if ((iir & flip_pending) == 0) | |
2988 | return false; | |
2989 | ||
2990 | intel_prepare_page_flip(dev, pipe); | |
2991 | ||
2992 | /* We detect FlipDone by looking for the change in PendingFlip from '1' | |
2993 | * to '0' on the following vblank, i.e. IIR has the Pendingflip | |
2994 | * asserted following the MI_DISPLAY_FLIP, but ISR is deasserted, hence | |
2995 | * the flip is completed (no longer pending). Since this doesn't raise | |
2996 | * an interrupt per se, we watch for the change at vblank. | |
2997 | */ | |
2998 | if (I915_READ16(ISR) & flip_pending) | |
2999 | return false; | |
3000 | ||
3001 | intel_finish_page_flip(dev, pipe); | |
3002 | ||
3003 | return true; | |
3004 | } | |
3005 | ||
ff1f525e | 3006 | static irqreturn_t i8xx_irq_handler(int irq, void *arg) |
c2798b19 CW |
3007 | { |
3008 | struct drm_device *dev = (struct drm_device *) arg; | |
3009 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
c2798b19 CW |
3010 | u16 iir, new_iir; |
3011 | u32 pipe_stats[2]; | |
3012 | unsigned long irqflags; | |
3013 | int irq_received; | |
3014 | int pipe; | |
3015 | u16 flip_mask = | |
3016 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
3017 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; | |
3018 | ||
3019 | atomic_inc(&dev_priv->irq_received); | |
3020 | ||
3021 | iir = I915_READ16(IIR); | |
3022 | if (iir == 0) | |
3023 | return IRQ_NONE; | |
3024 | ||
3025 | while (iir & ~flip_mask) { | |
3026 | /* Can't rely on pipestat interrupt bit in iir as it might | |
3027 | * have been cleared after the pipestat interrupt was received. | |
3028 | * It doesn't set the bit in iir again, but it still produces | |
3029 | * interrupts (for non-MSI). | |
3030 | */ | |
3031 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
3032 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) | |
3033 | i915_handle_error(dev, false); | |
3034 | ||
3035 | for_each_pipe(pipe) { | |
3036 | int reg = PIPESTAT(pipe); | |
3037 | pipe_stats[pipe] = I915_READ(reg); | |
3038 | ||
3039 | /* | |
3040 | * Clear the PIPE*STAT regs before the IIR | |
3041 | */ | |
3042 | if (pipe_stats[pipe] & 0x8000ffff) { | |
3043 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) | |
3044 | DRM_DEBUG_DRIVER("pipe %c underrun\n", | |
3045 | pipe_name(pipe)); | |
3046 | I915_WRITE(reg, pipe_stats[pipe]); | |
3047 | irq_received = 1; | |
3048 | } | |
3049 | } | |
3050 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
3051 | ||
3052 | I915_WRITE16(IIR, iir & ~flip_mask); | |
3053 | new_iir = I915_READ16(IIR); /* Flush posted writes */ | |
3054 | ||
d05c617e | 3055 | i915_update_dri1_breadcrumb(dev); |
c2798b19 CW |
3056 | |
3057 | if (iir & I915_USER_INTERRUPT) | |
3058 | notify_ring(dev, &dev_priv->ring[RCS]); | |
3059 | ||
3060 | if (pipe_stats[0] & PIPE_VBLANK_INTERRUPT_STATUS && | |
90a72f87 VS |
3061 | i8xx_handle_vblank(dev, 0, iir)) |
3062 | flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(0); | |
c2798b19 CW |
3063 | |
3064 | if (pipe_stats[1] & PIPE_VBLANK_INTERRUPT_STATUS && | |
90a72f87 VS |
3065 | i8xx_handle_vblank(dev, 1, iir)) |
3066 | flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(1); | |
c2798b19 CW |
3067 | |
3068 | iir = new_iir; | |
3069 | } | |
3070 | ||
3071 | return IRQ_HANDLED; | |
3072 | } | |
3073 | ||
3074 | static void i8xx_irq_uninstall(struct drm_device * dev) | |
3075 | { | |
3076 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
3077 | int pipe; | |
3078 | ||
c2798b19 CW |
3079 | for_each_pipe(pipe) { |
3080 | /* Clear enable bits; then clear status bits */ | |
3081 | I915_WRITE(PIPESTAT(pipe), 0); | |
3082 | I915_WRITE(PIPESTAT(pipe), I915_READ(PIPESTAT(pipe))); | |
3083 | } | |
3084 | I915_WRITE16(IMR, 0xffff); | |
3085 | I915_WRITE16(IER, 0x0); | |
3086 | I915_WRITE16(IIR, I915_READ16(IIR)); | |
3087 | } | |
3088 | ||
a266c7d5 CW |
3089 | static void i915_irq_preinstall(struct drm_device * dev) |
3090 | { | |
3091 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
3092 | int pipe; | |
3093 | ||
3094 | atomic_set(&dev_priv->irq_received, 0); | |
3095 | ||
3096 | if (I915_HAS_HOTPLUG(dev)) { | |
3097 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
3098 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
3099 | } | |
3100 | ||
00d98ebd | 3101 | I915_WRITE16(HWSTAM, 0xeffe); |
a266c7d5 CW |
3102 | for_each_pipe(pipe) |
3103 | I915_WRITE(PIPESTAT(pipe), 0); | |
3104 | I915_WRITE(IMR, 0xffffffff); | |
3105 | I915_WRITE(IER, 0x0); | |
3106 | POSTING_READ(IER); | |
3107 | } | |
3108 | ||
3109 | static int i915_irq_postinstall(struct drm_device *dev) | |
3110 | { | |
3111 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
38bde180 | 3112 | u32 enable_mask; |
a266c7d5 | 3113 | |
38bde180 CW |
3114 | I915_WRITE(EMR, ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH)); |
3115 | ||
3116 | /* Unmask the interrupts that we always want on. */ | |
3117 | dev_priv->irq_mask = | |
3118 | ~(I915_ASLE_INTERRUPT | | |
3119 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
3120 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
3121 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
3122 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | | |
3123 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
3124 | ||
3125 | enable_mask = | |
3126 | I915_ASLE_INTERRUPT | | |
3127 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
3128 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
3129 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT | | |
3130 | I915_USER_INTERRUPT; | |
3131 | ||
a266c7d5 | 3132 | if (I915_HAS_HOTPLUG(dev)) { |
20afbda2 DV |
3133 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
3134 | POSTING_READ(PORT_HOTPLUG_EN); | |
3135 | ||
a266c7d5 CW |
3136 | /* Enable in IER... */ |
3137 | enable_mask |= I915_DISPLAY_PORT_INTERRUPT; | |
3138 | /* and unmask in IMR */ | |
3139 | dev_priv->irq_mask &= ~I915_DISPLAY_PORT_INTERRUPT; | |
3140 | } | |
3141 | ||
a266c7d5 CW |
3142 | I915_WRITE(IMR, dev_priv->irq_mask); |
3143 | I915_WRITE(IER, enable_mask); | |
3144 | POSTING_READ(IER); | |
3145 | ||
f49e38dd | 3146 | i915_enable_asle_pipestat(dev); |
20afbda2 DV |
3147 | |
3148 | return 0; | |
3149 | } | |
3150 | ||
90a72f87 VS |
3151 | /* |
3152 | * Returns true when a page flip has completed. | |
3153 | */ | |
3154 | static bool i915_handle_vblank(struct drm_device *dev, | |
3155 | int plane, int pipe, u32 iir) | |
3156 | { | |
3157 | drm_i915_private_t *dev_priv = dev->dev_private; | |
3158 | u32 flip_pending = DISPLAY_PLANE_FLIP_PENDING(plane); | |
3159 | ||
3160 | if (!drm_handle_vblank(dev, pipe)) | |
3161 | return false; | |
3162 | ||
3163 | if ((iir & flip_pending) == 0) | |
3164 | return false; | |
3165 | ||
3166 | intel_prepare_page_flip(dev, plane); | |
3167 | ||
3168 | /* We detect FlipDone by looking for the change in PendingFlip from '1' | |
3169 | * to '0' on the following vblank, i.e. IIR has the Pendingflip | |
3170 | * asserted following the MI_DISPLAY_FLIP, but ISR is deasserted, hence | |
3171 | * the flip is completed (no longer pending). Since this doesn't raise | |
3172 | * an interrupt per se, we watch for the change at vblank. | |
3173 | */ | |
3174 | if (I915_READ(ISR) & flip_pending) | |
3175 | return false; | |
3176 | ||
3177 | intel_finish_page_flip(dev, pipe); | |
3178 | ||
3179 | return true; | |
3180 | } | |
3181 | ||
ff1f525e | 3182 | static irqreturn_t i915_irq_handler(int irq, void *arg) |
a266c7d5 CW |
3183 | { |
3184 | struct drm_device *dev = (struct drm_device *) arg; | |
3185 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
8291ee90 | 3186 | u32 iir, new_iir, pipe_stats[I915_MAX_PIPES]; |
a266c7d5 | 3187 | unsigned long irqflags; |
38bde180 CW |
3188 | u32 flip_mask = |
3189 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
3190 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; | |
38bde180 | 3191 | int pipe, ret = IRQ_NONE; |
a266c7d5 CW |
3192 | |
3193 | atomic_inc(&dev_priv->irq_received); | |
3194 | ||
3195 | iir = I915_READ(IIR); | |
38bde180 CW |
3196 | do { |
3197 | bool irq_received = (iir & ~flip_mask) != 0; | |
8291ee90 | 3198 | bool blc_event = false; |
a266c7d5 CW |
3199 | |
3200 | /* Can't rely on pipestat interrupt bit in iir as it might | |
3201 | * have been cleared after the pipestat interrupt was received. | |
3202 | * It doesn't set the bit in iir again, but it still produces | |
3203 | * interrupts (for non-MSI). | |
3204 | */ | |
3205 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
3206 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) | |
3207 | i915_handle_error(dev, false); | |
3208 | ||
3209 | for_each_pipe(pipe) { | |
3210 | int reg = PIPESTAT(pipe); | |
3211 | pipe_stats[pipe] = I915_READ(reg); | |
3212 | ||
38bde180 | 3213 | /* Clear the PIPE*STAT regs before the IIR */ |
a266c7d5 CW |
3214 | if (pipe_stats[pipe] & 0x8000ffff) { |
3215 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) | |
3216 | DRM_DEBUG_DRIVER("pipe %c underrun\n", | |
3217 | pipe_name(pipe)); | |
3218 | I915_WRITE(reg, pipe_stats[pipe]); | |
38bde180 | 3219 | irq_received = true; |
a266c7d5 CW |
3220 | } |
3221 | } | |
3222 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
3223 | ||
3224 | if (!irq_received) | |
3225 | break; | |
3226 | ||
a266c7d5 CW |
3227 | /* Consume port. Then clear IIR or we'll miss events */ |
3228 | if ((I915_HAS_HOTPLUG(dev)) && | |
3229 | (iir & I915_DISPLAY_PORT_INTERRUPT)) { | |
3230 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); | |
b543fb04 | 3231 | u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_I915; |
a266c7d5 CW |
3232 | |
3233 | DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", | |
3234 | hotplug_status); | |
91d131d2 DV |
3235 | |
3236 | intel_hpd_irq_handler(dev, hotplug_trigger, hpd_status_i915); | |
3237 | ||
a266c7d5 | 3238 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); |
38bde180 | 3239 | POSTING_READ(PORT_HOTPLUG_STAT); |
a266c7d5 CW |
3240 | } |
3241 | ||
38bde180 | 3242 | I915_WRITE(IIR, iir & ~flip_mask); |
a266c7d5 CW |
3243 | new_iir = I915_READ(IIR); /* Flush posted writes */ |
3244 | ||
a266c7d5 CW |
3245 | if (iir & I915_USER_INTERRUPT) |
3246 | notify_ring(dev, &dev_priv->ring[RCS]); | |
a266c7d5 | 3247 | |
a266c7d5 | 3248 | for_each_pipe(pipe) { |
38bde180 CW |
3249 | int plane = pipe; |
3250 | if (IS_MOBILE(dev)) | |
3251 | plane = !plane; | |
90a72f87 | 3252 | |
8291ee90 | 3253 | if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS && |
90a72f87 VS |
3254 | i915_handle_vblank(dev, plane, pipe, iir)) |
3255 | flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(plane); | |
a266c7d5 CW |
3256 | |
3257 | if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) | |
3258 | blc_event = true; | |
3259 | } | |
3260 | ||
a266c7d5 CW |
3261 | if (blc_event || (iir & I915_ASLE_INTERRUPT)) |
3262 | intel_opregion_asle_intr(dev); | |
3263 | ||
3264 | /* With MSI, interrupts are only generated when iir | |
3265 | * transitions from zero to nonzero. If another bit got | |
3266 | * set while we were handling the existing iir bits, then | |
3267 | * we would never get another interrupt. | |
3268 | * | |
3269 | * This is fine on non-MSI as well, as if we hit this path | |
3270 | * we avoid exiting the interrupt handler only to generate | |
3271 | * another one. | |
3272 | * | |
3273 | * Note that for MSI this could cause a stray interrupt report | |
3274 | * if an interrupt landed in the time between writing IIR and | |
3275 | * the posting read. This should be rare enough to never | |
3276 | * trigger the 99% of 100,000 interrupts test for disabling | |
3277 | * stray interrupts. | |
3278 | */ | |
38bde180 | 3279 | ret = IRQ_HANDLED; |
a266c7d5 | 3280 | iir = new_iir; |
38bde180 | 3281 | } while (iir & ~flip_mask); |
a266c7d5 | 3282 | |
d05c617e | 3283 | i915_update_dri1_breadcrumb(dev); |
8291ee90 | 3284 | |
a266c7d5 CW |
3285 | return ret; |
3286 | } | |
3287 | ||
3288 | static void i915_irq_uninstall(struct drm_device * dev) | |
3289 | { | |
3290 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
3291 | int pipe; | |
3292 | ||
ac4c16c5 EE |
3293 | del_timer_sync(&dev_priv->hotplug_reenable_timer); |
3294 | ||
a266c7d5 CW |
3295 | if (I915_HAS_HOTPLUG(dev)) { |
3296 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
3297 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
3298 | } | |
3299 | ||
00d98ebd | 3300 | I915_WRITE16(HWSTAM, 0xffff); |
55b39755 CW |
3301 | for_each_pipe(pipe) { |
3302 | /* Clear enable bits; then clear status bits */ | |
a266c7d5 | 3303 | I915_WRITE(PIPESTAT(pipe), 0); |
55b39755 CW |
3304 | I915_WRITE(PIPESTAT(pipe), I915_READ(PIPESTAT(pipe))); |
3305 | } | |
a266c7d5 CW |
3306 | I915_WRITE(IMR, 0xffffffff); |
3307 | I915_WRITE(IER, 0x0); | |
3308 | ||
a266c7d5 CW |
3309 | I915_WRITE(IIR, I915_READ(IIR)); |
3310 | } | |
3311 | ||
3312 | static void i965_irq_preinstall(struct drm_device * dev) | |
3313 | { | |
3314 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
3315 | int pipe; | |
3316 | ||
3317 | atomic_set(&dev_priv->irq_received, 0); | |
3318 | ||
adca4730 CW |
3319 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
3320 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
a266c7d5 CW |
3321 | |
3322 | I915_WRITE(HWSTAM, 0xeffe); | |
3323 | for_each_pipe(pipe) | |
3324 | I915_WRITE(PIPESTAT(pipe), 0); | |
3325 | I915_WRITE(IMR, 0xffffffff); | |
3326 | I915_WRITE(IER, 0x0); | |
3327 | POSTING_READ(IER); | |
3328 | } | |
3329 | ||
3330 | static int i965_irq_postinstall(struct drm_device *dev) | |
3331 | { | |
3332 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
bbba0a97 | 3333 | u32 enable_mask; |
a266c7d5 | 3334 | u32 error_mask; |
b79480ba | 3335 | unsigned long irqflags; |
a266c7d5 | 3336 | |
a266c7d5 | 3337 | /* Unmask the interrupts that we always want on. */ |
bbba0a97 | 3338 | dev_priv->irq_mask = ~(I915_ASLE_INTERRUPT | |
adca4730 | 3339 | I915_DISPLAY_PORT_INTERRUPT | |
bbba0a97 CW |
3340 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | |
3341 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
3342 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
3343 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | | |
3344 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
3345 | ||
3346 | enable_mask = ~dev_priv->irq_mask; | |
21ad8330 VS |
3347 | enable_mask &= ~(I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | |
3348 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT); | |
bbba0a97 CW |
3349 | enable_mask |= I915_USER_INTERRUPT; |
3350 | ||
3351 | if (IS_G4X(dev)) | |
3352 | enable_mask |= I915_BSD_USER_INTERRUPT; | |
a266c7d5 | 3353 | |
b79480ba DV |
3354 | /* Interrupt setup is already guaranteed to be single-threaded, this is |
3355 | * just to make the assert_spin_locked check happy. */ | |
3356 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
515ac2bb | 3357 | i915_enable_pipestat(dev_priv, 0, PIPE_GMBUS_EVENT_ENABLE); |
b79480ba | 3358 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
a266c7d5 | 3359 | |
a266c7d5 CW |
3360 | /* |
3361 | * Enable some error detection, note the instruction error mask | |
3362 | * bit is reserved, so we leave it masked. | |
3363 | */ | |
3364 | if (IS_G4X(dev)) { | |
3365 | error_mask = ~(GM45_ERROR_PAGE_TABLE | | |
3366 | GM45_ERROR_MEM_PRIV | | |
3367 | GM45_ERROR_CP_PRIV | | |
3368 | I915_ERROR_MEMORY_REFRESH); | |
3369 | } else { | |
3370 | error_mask = ~(I915_ERROR_PAGE_TABLE | | |
3371 | I915_ERROR_MEMORY_REFRESH); | |
3372 | } | |
3373 | I915_WRITE(EMR, error_mask); | |
3374 | ||
3375 | I915_WRITE(IMR, dev_priv->irq_mask); | |
3376 | I915_WRITE(IER, enable_mask); | |
3377 | POSTING_READ(IER); | |
3378 | ||
20afbda2 DV |
3379 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
3380 | POSTING_READ(PORT_HOTPLUG_EN); | |
3381 | ||
f49e38dd | 3382 | i915_enable_asle_pipestat(dev); |
20afbda2 DV |
3383 | |
3384 | return 0; | |
3385 | } | |
3386 | ||
bac56d5b | 3387 | static void i915_hpd_irq_setup(struct drm_device *dev) |
20afbda2 DV |
3388 | { |
3389 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
e5868a31 | 3390 | struct drm_mode_config *mode_config = &dev->mode_config; |
cd569aed | 3391 | struct intel_encoder *intel_encoder; |
20afbda2 DV |
3392 | u32 hotplug_en; |
3393 | ||
b5ea2d56 DV |
3394 | assert_spin_locked(&dev_priv->irq_lock); |
3395 | ||
bac56d5b EE |
3396 | if (I915_HAS_HOTPLUG(dev)) { |
3397 | hotplug_en = I915_READ(PORT_HOTPLUG_EN); | |
3398 | hotplug_en &= ~HOTPLUG_INT_EN_MASK; | |
3399 | /* Note HDMI and DP share hotplug bits */ | |
e5868a31 | 3400 | /* enable bits are the same for all generations */ |
cd569aed EE |
3401 | list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head) |
3402 | if (dev_priv->hpd_stats[intel_encoder->hpd_pin].hpd_mark == HPD_ENABLED) | |
3403 | hotplug_en |= hpd_mask_i915[intel_encoder->hpd_pin]; | |
bac56d5b EE |
3404 | /* Programming the CRT detection parameters tends |
3405 | to generate a spurious hotplug event about three | |
3406 | seconds later. So just do it once. | |
3407 | */ | |
3408 | if (IS_G4X(dev)) | |
3409 | hotplug_en |= CRT_HOTPLUG_ACTIVATION_PERIOD_64; | |
85fc95ba | 3410 | hotplug_en &= ~CRT_HOTPLUG_VOLTAGE_COMPARE_MASK; |
bac56d5b | 3411 | hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50; |
a266c7d5 | 3412 | |
bac56d5b EE |
3413 | /* Ignore TV since it's buggy */ |
3414 | I915_WRITE(PORT_HOTPLUG_EN, hotplug_en); | |
3415 | } | |
a266c7d5 CW |
3416 | } |
3417 | ||
ff1f525e | 3418 | static irqreturn_t i965_irq_handler(int irq, void *arg) |
a266c7d5 CW |
3419 | { |
3420 | struct drm_device *dev = (struct drm_device *) arg; | |
3421 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
a266c7d5 CW |
3422 | u32 iir, new_iir; |
3423 | u32 pipe_stats[I915_MAX_PIPES]; | |
a266c7d5 CW |
3424 | unsigned long irqflags; |
3425 | int irq_received; | |
3426 | int ret = IRQ_NONE, pipe; | |
21ad8330 VS |
3427 | u32 flip_mask = |
3428 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
3429 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; | |
a266c7d5 CW |
3430 | |
3431 | atomic_inc(&dev_priv->irq_received); | |
3432 | ||
3433 | iir = I915_READ(IIR); | |
3434 | ||
a266c7d5 | 3435 | for (;;) { |
2c8ba29f CW |
3436 | bool blc_event = false; |
3437 | ||
21ad8330 | 3438 | irq_received = (iir & ~flip_mask) != 0; |
a266c7d5 CW |
3439 | |
3440 | /* Can't rely on pipestat interrupt bit in iir as it might | |
3441 | * have been cleared after the pipestat interrupt was received. | |
3442 | * It doesn't set the bit in iir again, but it still produces | |
3443 | * interrupts (for non-MSI). | |
3444 | */ | |
3445 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
3446 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) | |
3447 | i915_handle_error(dev, false); | |
3448 | ||
3449 | for_each_pipe(pipe) { | |
3450 | int reg = PIPESTAT(pipe); | |
3451 | pipe_stats[pipe] = I915_READ(reg); | |
3452 | ||
3453 | /* | |
3454 | * Clear the PIPE*STAT regs before the IIR | |
3455 | */ | |
3456 | if (pipe_stats[pipe] & 0x8000ffff) { | |
3457 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) | |
3458 | DRM_DEBUG_DRIVER("pipe %c underrun\n", | |
3459 | pipe_name(pipe)); | |
3460 | I915_WRITE(reg, pipe_stats[pipe]); | |
3461 | irq_received = 1; | |
3462 | } | |
3463 | } | |
3464 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
3465 | ||
3466 | if (!irq_received) | |
3467 | break; | |
3468 | ||
3469 | ret = IRQ_HANDLED; | |
3470 | ||
3471 | /* Consume port. Then clear IIR or we'll miss events */ | |
adca4730 | 3472 | if (iir & I915_DISPLAY_PORT_INTERRUPT) { |
a266c7d5 | 3473 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); |
b543fb04 EE |
3474 | u32 hotplug_trigger = hotplug_status & (IS_G4X(dev) ? |
3475 | HOTPLUG_INT_STATUS_G4X : | |
4f7fd709 | 3476 | HOTPLUG_INT_STATUS_I915); |
a266c7d5 CW |
3477 | |
3478 | DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", | |
3479 | hotplug_status); | |
91d131d2 DV |
3480 | |
3481 | intel_hpd_irq_handler(dev, hotplug_trigger, | |
3482 | IS_G4X(dev) ? hpd_status_gen4 : hpd_status_i915); | |
3483 | ||
a266c7d5 CW |
3484 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); |
3485 | I915_READ(PORT_HOTPLUG_STAT); | |
3486 | } | |
3487 | ||
21ad8330 | 3488 | I915_WRITE(IIR, iir & ~flip_mask); |
a266c7d5 CW |
3489 | new_iir = I915_READ(IIR); /* Flush posted writes */ |
3490 | ||
a266c7d5 CW |
3491 | if (iir & I915_USER_INTERRUPT) |
3492 | notify_ring(dev, &dev_priv->ring[RCS]); | |
3493 | if (iir & I915_BSD_USER_INTERRUPT) | |
3494 | notify_ring(dev, &dev_priv->ring[VCS]); | |
3495 | ||
a266c7d5 | 3496 | for_each_pipe(pipe) { |
2c8ba29f | 3497 | if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS && |
90a72f87 VS |
3498 | i915_handle_vblank(dev, pipe, pipe, iir)) |
3499 | flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(pipe); | |
a266c7d5 CW |
3500 | |
3501 | if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) | |
3502 | blc_event = true; | |
3503 | } | |
3504 | ||
3505 | ||
3506 | if (blc_event || (iir & I915_ASLE_INTERRUPT)) | |
3507 | intel_opregion_asle_intr(dev); | |
3508 | ||
515ac2bb DV |
3509 | if (pipe_stats[0] & PIPE_GMBUS_INTERRUPT_STATUS) |
3510 | gmbus_irq_handler(dev); | |
3511 | ||
a266c7d5 CW |
3512 | /* With MSI, interrupts are only generated when iir |
3513 | * transitions from zero to nonzero. If another bit got | |
3514 | * set while we were handling the existing iir bits, then | |
3515 | * we would never get another interrupt. | |
3516 | * | |
3517 | * This is fine on non-MSI as well, as if we hit this path | |
3518 | * we avoid exiting the interrupt handler only to generate | |
3519 | * another one. | |
3520 | * | |
3521 | * Note that for MSI this could cause a stray interrupt report | |
3522 | * if an interrupt landed in the time between writing IIR and | |
3523 | * the posting read. This should be rare enough to never | |
3524 | * trigger the 99% of 100,000 interrupts test for disabling | |
3525 | * stray interrupts. | |
3526 | */ | |
3527 | iir = new_iir; | |
3528 | } | |
3529 | ||
d05c617e | 3530 | i915_update_dri1_breadcrumb(dev); |
2c8ba29f | 3531 | |
a266c7d5 CW |
3532 | return ret; |
3533 | } | |
3534 | ||
3535 | static void i965_irq_uninstall(struct drm_device * dev) | |
3536 | { | |
3537 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
3538 | int pipe; | |
3539 | ||
3540 | if (!dev_priv) | |
3541 | return; | |
3542 | ||
ac4c16c5 EE |
3543 | del_timer_sync(&dev_priv->hotplug_reenable_timer); |
3544 | ||
adca4730 CW |
3545 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
3546 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
a266c7d5 CW |
3547 | |
3548 | I915_WRITE(HWSTAM, 0xffffffff); | |
3549 | for_each_pipe(pipe) | |
3550 | I915_WRITE(PIPESTAT(pipe), 0); | |
3551 | I915_WRITE(IMR, 0xffffffff); | |
3552 | I915_WRITE(IER, 0x0); | |
3553 | ||
3554 | for_each_pipe(pipe) | |
3555 | I915_WRITE(PIPESTAT(pipe), | |
3556 | I915_READ(PIPESTAT(pipe)) & 0x8000ffff); | |
3557 | I915_WRITE(IIR, I915_READ(IIR)); | |
3558 | } | |
3559 | ||
ac4c16c5 EE |
3560 | static void i915_reenable_hotplug_timer_func(unsigned long data) |
3561 | { | |
3562 | drm_i915_private_t *dev_priv = (drm_i915_private_t *)data; | |
3563 | struct drm_device *dev = dev_priv->dev; | |
3564 | struct drm_mode_config *mode_config = &dev->mode_config; | |
3565 | unsigned long irqflags; | |
3566 | int i; | |
3567 | ||
3568 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
3569 | for (i = (HPD_NONE + 1); i < HPD_NUM_PINS; i++) { | |
3570 | struct drm_connector *connector; | |
3571 | ||
3572 | if (dev_priv->hpd_stats[i].hpd_mark != HPD_DISABLED) | |
3573 | continue; | |
3574 | ||
3575 | dev_priv->hpd_stats[i].hpd_mark = HPD_ENABLED; | |
3576 | ||
3577 | list_for_each_entry(connector, &mode_config->connector_list, head) { | |
3578 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
3579 | ||
3580 | if (intel_connector->encoder->hpd_pin == i) { | |
3581 | if (connector->polled != intel_connector->polled) | |
3582 | DRM_DEBUG_DRIVER("Reenabling HPD on connector %s\n", | |
3583 | drm_get_connector_name(connector)); | |
3584 | connector->polled = intel_connector->polled; | |
3585 | if (!connector->polled) | |
3586 | connector->polled = DRM_CONNECTOR_POLL_HPD; | |
3587 | } | |
3588 | } | |
3589 | } | |
3590 | if (dev_priv->display.hpd_irq_setup) | |
3591 | dev_priv->display.hpd_irq_setup(dev); | |
3592 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
3593 | } | |
3594 | ||
f71d4af4 JB |
3595 | void intel_irq_init(struct drm_device *dev) |
3596 | { | |
8b2e326d CW |
3597 | struct drm_i915_private *dev_priv = dev->dev_private; |
3598 | ||
3599 | INIT_WORK(&dev_priv->hotplug_work, i915_hotplug_work_func); | |
99584db3 | 3600 | INIT_WORK(&dev_priv->gpu_error.work, i915_error_work_func); |
c6a828d3 | 3601 | INIT_WORK(&dev_priv->rps.work, gen6_pm_rps_work); |
a4da4fa4 | 3602 | INIT_WORK(&dev_priv->l3_parity.error_work, ivybridge_parity_work); |
8b2e326d | 3603 | |
99584db3 DV |
3604 | setup_timer(&dev_priv->gpu_error.hangcheck_timer, |
3605 | i915_hangcheck_elapsed, | |
61bac78e | 3606 | (unsigned long) dev); |
ac4c16c5 EE |
3607 | setup_timer(&dev_priv->hotplug_reenable_timer, i915_reenable_hotplug_timer_func, |
3608 | (unsigned long) dev_priv); | |
61bac78e | 3609 | |
97a19a24 | 3610 | pm_qos_add_request(&dev_priv->pm_qos, PM_QOS_CPU_DMA_LATENCY, PM_QOS_DEFAULT_VALUE); |
9ee32fea | 3611 | |
f71d4af4 JB |
3612 | dev->driver->get_vblank_counter = i915_get_vblank_counter; |
3613 | dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */ | |
7d4e146f | 3614 | if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) { |
f71d4af4 JB |
3615 | dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */ |
3616 | dev->driver->get_vblank_counter = gm45_get_vblank_counter; | |
3617 | } | |
3618 | ||
c3613de9 KP |
3619 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
3620 | dev->driver->get_vblank_timestamp = i915_get_vblank_timestamp; | |
3621 | else | |
3622 | dev->driver->get_vblank_timestamp = NULL; | |
f71d4af4 JB |
3623 | dev->driver->get_scanout_position = i915_get_crtc_scanoutpos; |
3624 | ||
7e231dbe JB |
3625 | if (IS_VALLEYVIEW(dev)) { |
3626 | dev->driver->irq_handler = valleyview_irq_handler; | |
3627 | dev->driver->irq_preinstall = valleyview_irq_preinstall; | |
3628 | dev->driver->irq_postinstall = valleyview_irq_postinstall; | |
3629 | dev->driver->irq_uninstall = valleyview_irq_uninstall; | |
3630 | dev->driver->enable_vblank = valleyview_enable_vblank; | |
3631 | dev->driver->disable_vblank = valleyview_disable_vblank; | |
fa00abe0 | 3632 | dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup; |
4a06e201 | 3633 | } else if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) { |
7d99163d | 3634 | /* Share uninstall handlers with ILK/SNB */ |
f71d4af4 | 3635 | dev->driver->irq_handler = ivybridge_irq_handler; |
7d99163d | 3636 | dev->driver->irq_preinstall = ivybridge_irq_preinstall; |
f71d4af4 JB |
3637 | dev->driver->irq_postinstall = ivybridge_irq_postinstall; |
3638 | dev->driver->irq_uninstall = ironlake_irq_uninstall; | |
3639 | dev->driver->enable_vblank = ivybridge_enable_vblank; | |
3640 | dev->driver->disable_vblank = ivybridge_disable_vblank; | |
82a28bcf | 3641 | dev_priv->display.hpd_irq_setup = ibx_hpd_irq_setup; |
f71d4af4 JB |
3642 | } else if (HAS_PCH_SPLIT(dev)) { |
3643 | dev->driver->irq_handler = ironlake_irq_handler; | |
3644 | dev->driver->irq_preinstall = ironlake_irq_preinstall; | |
3645 | dev->driver->irq_postinstall = ironlake_irq_postinstall; | |
3646 | dev->driver->irq_uninstall = ironlake_irq_uninstall; | |
3647 | dev->driver->enable_vblank = ironlake_enable_vblank; | |
3648 | dev->driver->disable_vblank = ironlake_disable_vblank; | |
82a28bcf | 3649 | dev_priv->display.hpd_irq_setup = ibx_hpd_irq_setup; |
f71d4af4 | 3650 | } else { |
c2798b19 CW |
3651 | if (INTEL_INFO(dev)->gen == 2) { |
3652 | dev->driver->irq_preinstall = i8xx_irq_preinstall; | |
3653 | dev->driver->irq_postinstall = i8xx_irq_postinstall; | |
3654 | dev->driver->irq_handler = i8xx_irq_handler; | |
3655 | dev->driver->irq_uninstall = i8xx_irq_uninstall; | |
a266c7d5 CW |
3656 | } else if (INTEL_INFO(dev)->gen == 3) { |
3657 | dev->driver->irq_preinstall = i915_irq_preinstall; | |
3658 | dev->driver->irq_postinstall = i915_irq_postinstall; | |
3659 | dev->driver->irq_uninstall = i915_irq_uninstall; | |
3660 | dev->driver->irq_handler = i915_irq_handler; | |
20afbda2 | 3661 | dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup; |
c2798b19 | 3662 | } else { |
a266c7d5 CW |
3663 | dev->driver->irq_preinstall = i965_irq_preinstall; |
3664 | dev->driver->irq_postinstall = i965_irq_postinstall; | |
3665 | dev->driver->irq_uninstall = i965_irq_uninstall; | |
3666 | dev->driver->irq_handler = i965_irq_handler; | |
bac56d5b | 3667 | dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup; |
c2798b19 | 3668 | } |
f71d4af4 JB |
3669 | dev->driver->enable_vblank = i915_enable_vblank; |
3670 | dev->driver->disable_vblank = i915_disable_vblank; | |
3671 | } | |
3672 | } | |
20afbda2 DV |
3673 | |
3674 | void intel_hpd_init(struct drm_device *dev) | |
3675 | { | |
3676 | struct drm_i915_private *dev_priv = dev->dev_private; | |
821450c6 EE |
3677 | struct drm_mode_config *mode_config = &dev->mode_config; |
3678 | struct drm_connector *connector; | |
b5ea2d56 | 3679 | unsigned long irqflags; |
821450c6 | 3680 | int i; |
20afbda2 | 3681 | |
821450c6 EE |
3682 | for (i = 1; i < HPD_NUM_PINS; i++) { |
3683 | dev_priv->hpd_stats[i].hpd_cnt = 0; | |
3684 | dev_priv->hpd_stats[i].hpd_mark = HPD_ENABLED; | |
3685 | } | |
3686 | list_for_each_entry(connector, &mode_config->connector_list, head) { | |
3687 | struct intel_connector *intel_connector = to_intel_connector(connector); | |
3688 | connector->polled = intel_connector->polled; | |
3689 | if (!connector->polled && I915_HAS_HOTPLUG(dev) && intel_connector->encoder->hpd_pin > HPD_NONE) | |
3690 | connector->polled = DRM_CONNECTOR_POLL_HPD; | |
3691 | } | |
b5ea2d56 DV |
3692 | |
3693 | /* Interrupt setup is already guaranteed to be single-threaded, this is | |
3694 | * just to make the assert_spin_locked checks happy. */ | |
3695 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
20afbda2 DV |
3696 | if (dev_priv->display.hpd_irq_setup) |
3697 | dev_priv->display.hpd_irq_setup(dev); | |
b5ea2d56 | 3698 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
20afbda2 | 3699 | } |