Commit | Line | Data |
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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> |
1da177e4 LT |
33 | #include "drmP.h" |
34 | #include "drm.h" | |
35 | #include "i915_drm.h" | |
36 | #include "i915_drv.h" | |
1c5d22f7 | 37 | #include "i915_trace.h" |
79e53945 | 38 | #include "intel_drv.h" |
1da177e4 | 39 | |
036a4a7d | 40 | /* For display hotplug interrupt */ |
995b6762 | 41 | static void |
f2b115e6 | 42 | ironlake_enable_display_irq(drm_i915_private_t *dev_priv, u32 mask) |
036a4a7d | 43 | { |
1ec14ad3 CW |
44 | if ((dev_priv->irq_mask & mask) != 0) { |
45 | dev_priv->irq_mask &= ~mask; | |
46 | I915_WRITE(DEIMR, dev_priv->irq_mask); | |
3143a2bf | 47 | POSTING_READ(DEIMR); |
036a4a7d ZW |
48 | } |
49 | } | |
50 | ||
51 | static inline void | |
f2b115e6 | 52 | ironlake_disable_display_irq(drm_i915_private_t *dev_priv, u32 mask) |
036a4a7d | 53 | { |
1ec14ad3 CW |
54 | if ((dev_priv->irq_mask & mask) != mask) { |
55 | dev_priv->irq_mask |= mask; | |
56 | I915_WRITE(DEIMR, dev_priv->irq_mask); | |
3143a2bf | 57 | POSTING_READ(DEIMR); |
036a4a7d ZW |
58 | } |
59 | } | |
60 | ||
7c463586 KP |
61 | void |
62 | i915_enable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask) | |
63 | { | |
64 | if ((dev_priv->pipestat[pipe] & mask) != mask) { | |
9db4a9c7 | 65 | u32 reg = PIPESTAT(pipe); |
7c463586 KP |
66 | |
67 | dev_priv->pipestat[pipe] |= mask; | |
68 | /* Enable the interrupt, clear any pending status */ | |
69 | I915_WRITE(reg, dev_priv->pipestat[pipe] | (mask >> 16)); | |
3143a2bf | 70 | POSTING_READ(reg); |
7c463586 KP |
71 | } |
72 | } | |
73 | ||
74 | void | |
75 | i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask) | |
76 | { | |
77 | if ((dev_priv->pipestat[pipe] & mask) != 0) { | |
9db4a9c7 | 78 | u32 reg = PIPESTAT(pipe); |
7c463586 KP |
79 | |
80 | dev_priv->pipestat[pipe] &= ~mask; | |
81 | I915_WRITE(reg, dev_priv->pipestat[pipe]); | |
3143a2bf | 82 | POSTING_READ(reg); |
7c463586 KP |
83 | } |
84 | } | |
85 | ||
01c66889 ZY |
86 | /** |
87 | * intel_enable_asle - enable ASLE interrupt for OpRegion | |
88 | */ | |
1ec14ad3 | 89 | void intel_enable_asle(struct drm_device *dev) |
01c66889 | 90 | { |
1ec14ad3 CW |
91 | drm_i915_private_t *dev_priv = dev->dev_private; |
92 | unsigned long irqflags; | |
93 | ||
7e231dbe JB |
94 | /* FIXME: opregion/asle for VLV */ |
95 | if (IS_VALLEYVIEW(dev)) | |
96 | return; | |
97 | ||
1ec14ad3 | 98 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
01c66889 | 99 | |
c619eed4 | 100 | if (HAS_PCH_SPLIT(dev)) |
f2b115e6 | 101 | ironlake_enable_display_irq(dev_priv, DE_GSE); |
edcb49ca | 102 | else { |
01c66889 | 103 | i915_enable_pipestat(dev_priv, 1, |
d874bcff | 104 | PIPE_LEGACY_BLC_EVENT_ENABLE); |
a6c45cf0 | 105 | if (INTEL_INFO(dev)->gen >= 4) |
edcb49ca | 106 | i915_enable_pipestat(dev_priv, 0, |
d874bcff | 107 | PIPE_LEGACY_BLC_EVENT_ENABLE); |
edcb49ca | 108 | } |
1ec14ad3 CW |
109 | |
110 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
01c66889 ZY |
111 | } |
112 | ||
0a3e67a4 JB |
113 | /** |
114 | * i915_pipe_enabled - check if a pipe is enabled | |
115 | * @dev: DRM device | |
116 | * @pipe: pipe to check | |
117 | * | |
118 | * Reading certain registers when the pipe is disabled can hang the chip. | |
119 | * Use this routine to make sure the PLL is running and the pipe is active | |
120 | * before reading such registers if unsure. | |
121 | */ | |
122 | static int | |
123 | i915_pipe_enabled(struct drm_device *dev, int pipe) | |
124 | { | |
125 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
5eddb70b | 126 | return I915_READ(PIPECONF(pipe)) & PIPECONF_ENABLE; |
0a3e67a4 JB |
127 | } |
128 | ||
42f52ef8 KP |
129 | /* Called from drm generic code, passed a 'crtc', which |
130 | * we use as a pipe index | |
131 | */ | |
f71d4af4 | 132 | static u32 i915_get_vblank_counter(struct drm_device *dev, int pipe) |
0a3e67a4 JB |
133 | { |
134 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
135 | unsigned long high_frame; | |
136 | unsigned long low_frame; | |
5eddb70b | 137 | u32 high1, high2, low; |
0a3e67a4 JB |
138 | |
139 | if (!i915_pipe_enabled(dev, pipe)) { | |
44d98a61 | 140 | DRM_DEBUG_DRIVER("trying to get vblank count for disabled " |
9db4a9c7 | 141 | "pipe %c\n", pipe_name(pipe)); |
0a3e67a4 JB |
142 | return 0; |
143 | } | |
144 | ||
9db4a9c7 JB |
145 | high_frame = PIPEFRAME(pipe); |
146 | low_frame = PIPEFRAMEPIXEL(pipe); | |
5eddb70b | 147 | |
0a3e67a4 JB |
148 | /* |
149 | * High & low register fields aren't synchronized, so make sure | |
150 | * we get a low value that's stable across two reads of the high | |
151 | * register. | |
152 | */ | |
153 | do { | |
5eddb70b CW |
154 | high1 = I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK; |
155 | low = I915_READ(low_frame) & PIPE_FRAME_LOW_MASK; | |
156 | high2 = I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK; | |
0a3e67a4 JB |
157 | } while (high1 != high2); |
158 | ||
5eddb70b CW |
159 | high1 >>= PIPE_FRAME_HIGH_SHIFT; |
160 | low >>= PIPE_FRAME_LOW_SHIFT; | |
161 | return (high1 << 8) | low; | |
0a3e67a4 JB |
162 | } |
163 | ||
f71d4af4 | 164 | static u32 gm45_get_vblank_counter(struct drm_device *dev, int pipe) |
9880b7a5 JB |
165 | { |
166 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
9db4a9c7 | 167 | int reg = PIPE_FRMCOUNT_GM45(pipe); |
9880b7a5 JB |
168 | |
169 | if (!i915_pipe_enabled(dev, pipe)) { | |
44d98a61 | 170 | DRM_DEBUG_DRIVER("trying to get vblank count for disabled " |
9db4a9c7 | 171 | "pipe %c\n", pipe_name(pipe)); |
9880b7a5 JB |
172 | return 0; |
173 | } | |
174 | ||
175 | return I915_READ(reg); | |
176 | } | |
177 | ||
f71d4af4 | 178 | static int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe, |
0af7e4df MK |
179 | int *vpos, int *hpos) |
180 | { | |
181 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
182 | u32 vbl = 0, position = 0; | |
183 | int vbl_start, vbl_end, htotal, vtotal; | |
184 | bool in_vbl = true; | |
185 | int ret = 0; | |
186 | ||
187 | if (!i915_pipe_enabled(dev, pipe)) { | |
188 | DRM_DEBUG_DRIVER("trying to get scanoutpos for disabled " | |
9db4a9c7 | 189 | "pipe %c\n", pipe_name(pipe)); |
0af7e4df MK |
190 | return 0; |
191 | } | |
192 | ||
193 | /* Get vtotal. */ | |
194 | vtotal = 1 + ((I915_READ(VTOTAL(pipe)) >> 16) & 0x1fff); | |
195 | ||
196 | if (INTEL_INFO(dev)->gen >= 4) { | |
197 | /* No obvious pixelcount register. Only query vertical | |
198 | * scanout position from Display scan line register. | |
199 | */ | |
200 | position = I915_READ(PIPEDSL(pipe)); | |
201 | ||
202 | /* Decode into vertical scanout position. Don't have | |
203 | * horizontal scanout position. | |
204 | */ | |
205 | *vpos = position & 0x1fff; | |
206 | *hpos = 0; | |
207 | } else { | |
208 | /* Have access to pixelcount since start of frame. | |
209 | * We can split this into vertical and horizontal | |
210 | * scanout position. | |
211 | */ | |
212 | position = (I915_READ(PIPEFRAMEPIXEL(pipe)) & PIPE_PIXEL_MASK) >> PIPE_PIXEL_SHIFT; | |
213 | ||
214 | htotal = 1 + ((I915_READ(HTOTAL(pipe)) >> 16) & 0x1fff); | |
215 | *vpos = position / htotal; | |
216 | *hpos = position - (*vpos * htotal); | |
217 | } | |
218 | ||
219 | /* Query vblank area. */ | |
220 | vbl = I915_READ(VBLANK(pipe)); | |
221 | ||
222 | /* Test position against vblank region. */ | |
223 | vbl_start = vbl & 0x1fff; | |
224 | vbl_end = (vbl >> 16) & 0x1fff; | |
225 | ||
226 | if ((*vpos < vbl_start) || (*vpos > vbl_end)) | |
227 | in_vbl = false; | |
228 | ||
229 | /* Inside "upper part" of vblank area? Apply corrective offset: */ | |
230 | if (in_vbl && (*vpos >= vbl_start)) | |
231 | *vpos = *vpos - vtotal; | |
232 | ||
233 | /* Readouts valid? */ | |
234 | if (vbl > 0) | |
235 | ret |= DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE; | |
236 | ||
237 | /* In vblank? */ | |
238 | if (in_vbl) | |
239 | ret |= DRM_SCANOUTPOS_INVBL; | |
240 | ||
241 | return ret; | |
242 | } | |
243 | ||
f71d4af4 | 244 | static int i915_get_vblank_timestamp(struct drm_device *dev, int pipe, |
0af7e4df MK |
245 | int *max_error, |
246 | struct timeval *vblank_time, | |
247 | unsigned flags) | |
248 | { | |
4041b853 CW |
249 | struct drm_i915_private *dev_priv = dev->dev_private; |
250 | struct drm_crtc *crtc; | |
0af7e4df | 251 | |
4041b853 CW |
252 | if (pipe < 0 || pipe >= dev_priv->num_pipe) { |
253 | DRM_ERROR("Invalid crtc %d\n", pipe); | |
0af7e4df MK |
254 | return -EINVAL; |
255 | } | |
256 | ||
257 | /* Get drm_crtc to timestamp: */ | |
4041b853 CW |
258 | crtc = intel_get_crtc_for_pipe(dev, pipe); |
259 | if (crtc == NULL) { | |
260 | DRM_ERROR("Invalid crtc %d\n", pipe); | |
261 | return -EINVAL; | |
262 | } | |
263 | ||
264 | if (!crtc->enabled) { | |
265 | DRM_DEBUG_KMS("crtc %d is disabled\n", pipe); | |
266 | return -EBUSY; | |
267 | } | |
0af7e4df MK |
268 | |
269 | /* Helper routine in DRM core does all the work: */ | |
4041b853 CW |
270 | return drm_calc_vbltimestamp_from_scanoutpos(dev, pipe, max_error, |
271 | vblank_time, flags, | |
272 | crtc); | |
0af7e4df MK |
273 | } |
274 | ||
5ca58282 JB |
275 | /* |
276 | * Handle hotplug events outside the interrupt handler proper. | |
277 | */ | |
278 | static void i915_hotplug_work_func(struct work_struct *work) | |
279 | { | |
280 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, | |
281 | hotplug_work); | |
282 | struct drm_device *dev = dev_priv->dev; | |
c31c4ba3 | 283 | struct drm_mode_config *mode_config = &dev->mode_config; |
4ef69c7a CW |
284 | struct intel_encoder *encoder; |
285 | ||
a65e34c7 | 286 | mutex_lock(&mode_config->mutex); |
e67189ab JB |
287 | DRM_DEBUG_KMS("running encoder hotplug functions\n"); |
288 | ||
4ef69c7a CW |
289 | list_for_each_entry(encoder, &mode_config->encoder_list, base.head) |
290 | if (encoder->hot_plug) | |
291 | encoder->hot_plug(encoder); | |
292 | ||
40ee3381 KP |
293 | mutex_unlock(&mode_config->mutex); |
294 | ||
5ca58282 | 295 | /* Just fire off a uevent and let userspace tell us what to do */ |
eb1f8e4f | 296 | drm_helper_hpd_irq_event(dev); |
5ca58282 JB |
297 | } |
298 | ||
f97108d1 JB |
299 | static void i915_handle_rps_change(struct drm_device *dev) |
300 | { | |
301 | drm_i915_private_t *dev_priv = dev->dev_private; | |
b5b72e89 | 302 | u32 busy_up, busy_down, max_avg, min_avg; |
f97108d1 JB |
303 | u8 new_delay = dev_priv->cur_delay; |
304 | ||
7648fa99 | 305 | I915_WRITE16(MEMINTRSTS, MEMINT_EVAL_CHG); |
b5b72e89 MG |
306 | busy_up = I915_READ(RCPREVBSYTUPAVG); |
307 | busy_down = I915_READ(RCPREVBSYTDNAVG); | |
f97108d1 JB |
308 | max_avg = I915_READ(RCBMAXAVG); |
309 | min_avg = I915_READ(RCBMINAVG); | |
310 | ||
311 | /* Handle RCS change request from hw */ | |
b5b72e89 | 312 | if (busy_up > max_avg) { |
f97108d1 JB |
313 | if (dev_priv->cur_delay != dev_priv->max_delay) |
314 | new_delay = dev_priv->cur_delay - 1; | |
315 | if (new_delay < dev_priv->max_delay) | |
316 | new_delay = dev_priv->max_delay; | |
b5b72e89 | 317 | } else if (busy_down < min_avg) { |
f97108d1 JB |
318 | if (dev_priv->cur_delay != dev_priv->min_delay) |
319 | new_delay = dev_priv->cur_delay + 1; | |
320 | if (new_delay > dev_priv->min_delay) | |
321 | new_delay = dev_priv->min_delay; | |
322 | } | |
323 | ||
7648fa99 JB |
324 | if (ironlake_set_drps(dev, new_delay)) |
325 | dev_priv->cur_delay = new_delay; | |
f97108d1 JB |
326 | |
327 | return; | |
328 | } | |
329 | ||
549f7365 CW |
330 | static void notify_ring(struct drm_device *dev, |
331 | struct intel_ring_buffer *ring) | |
332 | { | |
333 | struct drm_i915_private *dev_priv = dev->dev_private; | |
9862e600 | 334 | |
475553de CW |
335 | if (ring->obj == NULL) |
336 | return; | |
337 | ||
6d171cb4 | 338 | trace_i915_gem_request_complete(ring, ring->get_seqno(ring)); |
9862e600 | 339 | |
549f7365 | 340 | wake_up_all(&ring->irq_queue); |
3e0dc6b0 BW |
341 | if (i915_enable_hangcheck) { |
342 | dev_priv->hangcheck_count = 0; | |
343 | mod_timer(&dev_priv->hangcheck_timer, | |
344 | jiffies + | |
345 | msecs_to_jiffies(DRM_I915_HANGCHECK_PERIOD)); | |
346 | } | |
549f7365 CW |
347 | } |
348 | ||
4912d041 | 349 | static void gen6_pm_rps_work(struct work_struct *work) |
3b8d8d91 | 350 | { |
4912d041 BW |
351 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, |
352 | rps_work); | |
4912d041 | 353 | u32 pm_iir, pm_imr; |
7b9e0ae6 | 354 | u8 new_delay; |
4912d041 BW |
355 | |
356 | spin_lock_irq(&dev_priv->rps_lock); | |
357 | pm_iir = dev_priv->pm_iir; | |
358 | dev_priv->pm_iir = 0; | |
359 | pm_imr = I915_READ(GEN6_PMIMR); | |
a9e2641d | 360 | I915_WRITE(GEN6_PMIMR, 0); |
4912d041 | 361 | spin_unlock_irq(&dev_priv->rps_lock); |
3b8d8d91 | 362 | |
7b9e0ae6 | 363 | if ((pm_iir & GEN6_PM_DEFERRED_EVENTS) == 0) |
3b8d8d91 JB |
364 | return; |
365 | ||
4912d041 | 366 | mutex_lock(&dev_priv->dev->struct_mutex); |
7b9e0ae6 CW |
367 | |
368 | if (pm_iir & GEN6_PM_RP_UP_THRESHOLD) | |
369 | new_delay = dev_priv->cur_delay + 1; | |
370 | else | |
371 | new_delay = dev_priv->cur_delay - 1; | |
3b8d8d91 | 372 | |
4912d041 | 373 | gen6_set_rps(dev_priv->dev, new_delay); |
3b8d8d91 | 374 | |
4912d041 | 375 | mutex_unlock(&dev_priv->dev->struct_mutex); |
3b8d8d91 JB |
376 | } |
377 | ||
e3689190 BW |
378 | |
379 | /** | |
380 | * ivybridge_parity_work - Workqueue called when a parity error interrupt | |
381 | * occurred. | |
382 | * @work: workqueue struct | |
383 | * | |
384 | * Doesn't actually do anything except notify userspace. As a consequence of | |
385 | * this event, userspace should try to remap the bad rows since statistically | |
386 | * it is likely the same row is more likely to go bad again. | |
387 | */ | |
388 | static void ivybridge_parity_work(struct work_struct *work) | |
389 | { | |
390 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, | |
391 | parity_error_work); | |
392 | u32 error_status, row, bank, subbank; | |
393 | char *parity_event[5]; | |
394 | uint32_t misccpctl; | |
395 | unsigned long flags; | |
396 | ||
397 | /* We must turn off DOP level clock gating to access the L3 registers. | |
398 | * In order to prevent a get/put style interface, acquire struct mutex | |
399 | * any time we access those registers. | |
400 | */ | |
401 | mutex_lock(&dev_priv->dev->struct_mutex); | |
402 | ||
403 | misccpctl = I915_READ(GEN7_MISCCPCTL); | |
404 | I915_WRITE(GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE); | |
405 | POSTING_READ(GEN7_MISCCPCTL); | |
406 | ||
407 | error_status = I915_READ(GEN7_L3CDERRST1); | |
408 | row = GEN7_PARITY_ERROR_ROW(error_status); | |
409 | bank = GEN7_PARITY_ERROR_BANK(error_status); | |
410 | subbank = GEN7_PARITY_ERROR_SUBBANK(error_status); | |
411 | ||
412 | I915_WRITE(GEN7_L3CDERRST1, GEN7_PARITY_ERROR_VALID | | |
413 | GEN7_L3CDERRST1_ENABLE); | |
414 | POSTING_READ(GEN7_L3CDERRST1); | |
415 | ||
416 | I915_WRITE(GEN7_MISCCPCTL, misccpctl); | |
417 | ||
418 | spin_lock_irqsave(&dev_priv->irq_lock, flags); | |
419 | dev_priv->gt_irq_mask &= ~GT_GEN7_L3_PARITY_ERROR_INTERRUPT; | |
420 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); | |
421 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); | |
422 | ||
423 | mutex_unlock(&dev_priv->dev->struct_mutex); | |
424 | ||
425 | parity_event[0] = "L3_PARITY_ERROR=1"; | |
426 | parity_event[1] = kasprintf(GFP_KERNEL, "ROW=%d", row); | |
427 | parity_event[2] = kasprintf(GFP_KERNEL, "BANK=%d", bank); | |
428 | parity_event[3] = kasprintf(GFP_KERNEL, "SUBBANK=%d", subbank); | |
429 | parity_event[4] = NULL; | |
430 | ||
431 | kobject_uevent_env(&dev_priv->dev->primary->kdev.kobj, | |
432 | KOBJ_CHANGE, parity_event); | |
433 | ||
434 | DRM_DEBUG("Parity error: Row = %d, Bank = %d, Sub bank = %d.\n", | |
435 | row, bank, subbank); | |
436 | ||
437 | kfree(parity_event[3]); | |
438 | kfree(parity_event[2]); | |
439 | kfree(parity_event[1]); | |
440 | } | |
441 | ||
d2ba8470 | 442 | static void ivybridge_handle_parity_error(struct drm_device *dev) |
e3689190 BW |
443 | { |
444 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
445 | unsigned long flags; | |
446 | ||
447 | if (!IS_IVYBRIDGE(dev)) | |
448 | return; | |
449 | ||
450 | spin_lock_irqsave(&dev_priv->irq_lock, flags); | |
451 | dev_priv->gt_irq_mask |= GT_GEN7_L3_PARITY_ERROR_INTERRUPT; | |
452 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); | |
453 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); | |
454 | ||
455 | queue_work(dev_priv->wq, &dev_priv->parity_error_work); | |
456 | } | |
457 | ||
e7b4c6b1 DV |
458 | static void snb_gt_irq_handler(struct drm_device *dev, |
459 | struct drm_i915_private *dev_priv, | |
460 | u32 gt_iir) | |
461 | { | |
462 | ||
463 | if (gt_iir & (GEN6_RENDER_USER_INTERRUPT | | |
464 | GEN6_RENDER_PIPE_CONTROL_NOTIFY_INTERRUPT)) | |
465 | notify_ring(dev, &dev_priv->ring[RCS]); | |
466 | if (gt_iir & GEN6_BSD_USER_INTERRUPT) | |
467 | notify_ring(dev, &dev_priv->ring[VCS]); | |
468 | if (gt_iir & GEN6_BLITTER_USER_INTERRUPT) | |
469 | notify_ring(dev, &dev_priv->ring[BCS]); | |
470 | ||
471 | if (gt_iir & (GT_GEN6_BLT_CS_ERROR_INTERRUPT | | |
472 | GT_GEN6_BSD_CS_ERROR_INTERRUPT | | |
473 | GT_RENDER_CS_ERROR_INTERRUPT)) { | |
474 | DRM_ERROR("GT error interrupt 0x%08x\n", gt_iir); | |
475 | i915_handle_error(dev, false); | |
476 | } | |
e3689190 BW |
477 | |
478 | if (gt_iir & GT_GEN7_L3_PARITY_ERROR_INTERRUPT) | |
479 | ivybridge_handle_parity_error(dev); | |
e7b4c6b1 DV |
480 | } |
481 | ||
fc6826d1 CW |
482 | static void gen6_queue_rps_work(struct drm_i915_private *dev_priv, |
483 | u32 pm_iir) | |
484 | { | |
485 | unsigned long flags; | |
486 | ||
487 | /* | |
488 | * IIR bits should never already be set because IMR should | |
489 | * prevent an interrupt from being shown in IIR. The warning | |
490 | * displays a case where we've unsafely cleared | |
491 | * dev_priv->pm_iir. Although missing an interrupt of the same | |
492 | * type is not a problem, it displays a problem in the logic. | |
493 | * | |
494 | * The mask bit in IMR is cleared by rps_work. | |
495 | */ | |
496 | ||
497 | spin_lock_irqsave(&dev_priv->rps_lock, flags); | |
fc6826d1 CW |
498 | dev_priv->pm_iir |= pm_iir; |
499 | I915_WRITE(GEN6_PMIMR, dev_priv->pm_iir); | |
500 | POSTING_READ(GEN6_PMIMR); | |
501 | spin_unlock_irqrestore(&dev_priv->rps_lock, flags); | |
502 | ||
503 | queue_work(dev_priv->wq, &dev_priv->rps_work); | |
504 | } | |
505 | ||
7e231dbe JB |
506 | static irqreturn_t valleyview_irq_handler(DRM_IRQ_ARGS) |
507 | { | |
508 | struct drm_device *dev = (struct drm_device *) arg; | |
509 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
510 | u32 iir, gt_iir, pm_iir; | |
511 | irqreturn_t ret = IRQ_NONE; | |
512 | unsigned long irqflags; | |
513 | int pipe; | |
514 | u32 pipe_stats[I915_MAX_PIPES]; | |
7e231dbe JB |
515 | bool blc_event; |
516 | ||
517 | atomic_inc(&dev_priv->irq_received); | |
518 | ||
7e231dbe JB |
519 | while (true) { |
520 | iir = I915_READ(VLV_IIR); | |
521 | gt_iir = I915_READ(GTIIR); | |
522 | pm_iir = I915_READ(GEN6_PMIIR); | |
523 | ||
524 | if (gt_iir == 0 && pm_iir == 0 && iir == 0) | |
525 | goto out; | |
526 | ||
527 | ret = IRQ_HANDLED; | |
528 | ||
e7b4c6b1 | 529 | snb_gt_irq_handler(dev, dev_priv, gt_iir); |
7e231dbe JB |
530 | |
531 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
532 | for_each_pipe(pipe) { | |
533 | int reg = PIPESTAT(pipe); | |
534 | pipe_stats[pipe] = I915_READ(reg); | |
535 | ||
536 | /* | |
537 | * Clear the PIPE*STAT regs before the IIR | |
538 | */ | |
539 | if (pipe_stats[pipe] & 0x8000ffff) { | |
540 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) | |
541 | DRM_DEBUG_DRIVER("pipe %c underrun\n", | |
542 | pipe_name(pipe)); | |
543 | I915_WRITE(reg, pipe_stats[pipe]); | |
544 | } | |
545 | } | |
546 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
547 | ||
31acc7f5 JB |
548 | for_each_pipe(pipe) { |
549 | if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS) | |
550 | drm_handle_vblank(dev, pipe); | |
551 | ||
552 | if (pipe_stats[pipe] & PLANE_FLIPDONE_INT_STATUS_VLV) { | |
553 | intel_prepare_page_flip(dev, pipe); | |
554 | intel_finish_page_flip(dev, pipe); | |
555 | } | |
556 | } | |
557 | ||
7e231dbe JB |
558 | /* Consume port. Then clear IIR or we'll miss events */ |
559 | if (iir & I915_DISPLAY_PORT_INTERRUPT) { | |
560 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); | |
561 | ||
562 | DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", | |
563 | hotplug_status); | |
564 | if (hotplug_status & dev_priv->hotplug_supported_mask) | |
565 | queue_work(dev_priv->wq, | |
566 | &dev_priv->hotplug_work); | |
567 | ||
568 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); | |
569 | I915_READ(PORT_HOTPLUG_STAT); | |
570 | } | |
571 | ||
7e231dbe JB |
572 | if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) |
573 | blc_event = true; | |
574 | ||
fc6826d1 CW |
575 | if (pm_iir & GEN6_PM_DEFERRED_EVENTS) |
576 | gen6_queue_rps_work(dev_priv, pm_iir); | |
7e231dbe JB |
577 | |
578 | I915_WRITE(GTIIR, gt_iir); | |
579 | I915_WRITE(GEN6_PMIIR, pm_iir); | |
580 | I915_WRITE(VLV_IIR, iir); | |
581 | } | |
582 | ||
583 | out: | |
584 | return ret; | |
585 | } | |
586 | ||
23e81d69 | 587 | static void ibx_irq_handler(struct drm_device *dev, u32 pch_iir) |
776ad806 JB |
588 | { |
589 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
9db4a9c7 | 590 | int pipe; |
776ad806 | 591 | |
776ad806 JB |
592 | if (pch_iir & SDE_AUDIO_POWER_MASK) |
593 | DRM_DEBUG_DRIVER("PCH audio power change on port %d\n", | |
594 | (pch_iir & SDE_AUDIO_POWER_MASK) >> | |
595 | SDE_AUDIO_POWER_SHIFT); | |
596 | ||
597 | if (pch_iir & SDE_GMBUS) | |
598 | DRM_DEBUG_DRIVER("PCH GMBUS interrupt\n"); | |
599 | ||
600 | if (pch_iir & SDE_AUDIO_HDCP_MASK) | |
601 | DRM_DEBUG_DRIVER("PCH HDCP audio interrupt\n"); | |
602 | ||
603 | if (pch_iir & SDE_AUDIO_TRANS_MASK) | |
604 | DRM_DEBUG_DRIVER("PCH transcoder audio interrupt\n"); | |
605 | ||
606 | if (pch_iir & SDE_POISON) | |
607 | DRM_ERROR("PCH poison interrupt\n"); | |
608 | ||
9db4a9c7 JB |
609 | if (pch_iir & SDE_FDI_MASK) |
610 | for_each_pipe(pipe) | |
611 | DRM_DEBUG_DRIVER(" pipe %c FDI IIR: 0x%08x\n", | |
612 | pipe_name(pipe), | |
613 | I915_READ(FDI_RX_IIR(pipe))); | |
776ad806 JB |
614 | |
615 | if (pch_iir & (SDE_TRANSB_CRC_DONE | SDE_TRANSA_CRC_DONE)) | |
616 | DRM_DEBUG_DRIVER("PCH transcoder CRC done interrupt\n"); | |
617 | ||
618 | if (pch_iir & (SDE_TRANSB_CRC_ERR | SDE_TRANSA_CRC_ERR)) | |
619 | DRM_DEBUG_DRIVER("PCH transcoder CRC error interrupt\n"); | |
620 | ||
621 | if (pch_iir & SDE_TRANSB_FIFO_UNDER) | |
622 | DRM_DEBUG_DRIVER("PCH transcoder B underrun interrupt\n"); | |
623 | if (pch_iir & SDE_TRANSA_FIFO_UNDER) | |
624 | DRM_DEBUG_DRIVER("PCH transcoder A underrun interrupt\n"); | |
625 | } | |
626 | ||
23e81d69 AJ |
627 | static void cpt_irq_handler(struct drm_device *dev, u32 pch_iir) |
628 | { | |
629 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
630 | int pipe; | |
631 | ||
632 | if (pch_iir & SDE_AUDIO_POWER_MASK_CPT) | |
633 | DRM_DEBUG_DRIVER("PCH audio power change on port %d\n", | |
634 | (pch_iir & SDE_AUDIO_POWER_MASK_CPT) >> | |
635 | SDE_AUDIO_POWER_SHIFT_CPT); | |
636 | ||
637 | if (pch_iir & SDE_AUX_MASK_CPT) | |
638 | DRM_DEBUG_DRIVER("AUX channel interrupt\n"); | |
639 | ||
640 | if (pch_iir & SDE_GMBUS_CPT) | |
641 | DRM_DEBUG_DRIVER("PCH GMBUS interrupt\n"); | |
642 | ||
643 | if (pch_iir & SDE_AUDIO_CP_REQ_CPT) | |
644 | DRM_DEBUG_DRIVER("Audio CP request interrupt\n"); | |
645 | ||
646 | if (pch_iir & SDE_AUDIO_CP_CHG_CPT) | |
647 | DRM_DEBUG_DRIVER("Audio CP change interrupt\n"); | |
648 | ||
649 | if (pch_iir & SDE_FDI_MASK_CPT) | |
650 | for_each_pipe(pipe) | |
651 | DRM_DEBUG_DRIVER(" pipe %c FDI IIR: 0x%08x\n", | |
652 | pipe_name(pipe), | |
653 | I915_READ(FDI_RX_IIR(pipe))); | |
654 | } | |
655 | ||
f71d4af4 | 656 | static irqreturn_t ivybridge_irq_handler(DRM_IRQ_ARGS) |
b1f14ad0 JB |
657 | { |
658 | struct drm_device *dev = (struct drm_device *) arg; | |
659 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
0e43406b CW |
660 | u32 de_iir, gt_iir, de_ier, pm_iir; |
661 | irqreturn_t ret = IRQ_NONE; | |
662 | int i; | |
b1f14ad0 JB |
663 | |
664 | atomic_inc(&dev_priv->irq_received); | |
665 | ||
666 | /* disable master interrupt before clearing iir */ | |
667 | de_ier = I915_READ(DEIER); | |
668 | I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL); | |
b1f14ad0 | 669 | |
b1f14ad0 | 670 | gt_iir = I915_READ(GTIIR); |
0e43406b CW |
671 | if (gt_iir) { |
672 | snb_gt_irq_handler(dev, dev_priv, gt_iir); | |
673 | I915_WRITE(GTIIR, gt_iir); | |
674 | ret = IRQ_HANDLED; | |
b1f14ad0 JB |
675 | } |
676 | ||
0e43406b CW |
677 | de_iir = I915_READ(DEIIR); |
678 | if (de_iir) { | |
679 | if (de_iir & DE_GSE_IVB) | |
680 | intel_opregion_gse_intr(dev); | |
681 | ||
682 | for (i = 0; i < 3; i++) { | |
683 | if (de_iir & (DE_PLANEA_FLIP_DONE_IVB << (5 * i))) { | |
684 | intel_prepare_page_flip(dev, i); | |
685 | intel_finish_page_flip_plane(dev, i); | |
686 | } | |
687 | if (de_iir & (DE_PIPEA_VBLANK_IVB << (5 * i))) | |
688 | drm_handle_vblank(dev, i); | |
689 | } | |
b615b57a | 690 | |
0e43406b CW |
691 | /* check event from PCH */ |
692 | if (de_iir & DE_PCH_EVENT_IVB) { | |
693 | u32 pch_iir = I915_READ(SDEIIR); | |
b1f14ad0 | 694 | |
0e43406b CW |
695 | if (pch_iir & SDE_HOTPLUG_MASK_CPT) |
696 | queue_work(dev_priv->wq, &dev_priv->hotplug_work); | |
23e81d69 | 697 | cpt_irq_handler(dev, pch_iir); |
b1f14ad0 | 698 | |
0e43406b CW |
699 | /* clear PCH hotplug event before clear CPU irq */ |
700 | I915_WRITE(SDEIIR, pch_iir); | |
701 | } | |
b615b57a | 702 | |
0e43406b CW |
703 | I915_WRITE(DEIIR, de_iir); |
704 | ret = IRQ_HANDLED; | |
b1f14ad0 JB |
705 | } |
706 | ||
0e43406b CW |
707 | pm_iir = I915_READ(GEN6_PMIIR); |
708 | if (pm_iir) { | |
709 | if (pm_iir & GEN6_PM_DEFERRED_EVENTS) | |
710 | gen6_queue_rps_work(dev_priv, pm_iir); | |
711 | I915_WRITE(GEN6_PMIIR, pm_iir); | |
712 | ret = IRQ_HANDLED; | |
713 | } | |
b1f14ad0 | 714 | |
b1f14ad0 JB |
715 | I915_WRITE(DEIER, de_ier); |
716 | POSTING_READ(DEIER); | |
717 | ||
718 | return ret; | |
719 | } | |
720 | ||
e7b4c6b1 DV |
721 | static void ilk_gt_irq_handler(struct drm_device *dev, |
722 | struct drm_i915_private *dev_priv, | |
723 | u32 gt_iir) | |
724 | { | |
725 | if (gt_iir & (GT_USER_INTERRUPT | GT_PIPE_NOTIFY)) | |
726 | notify_ring(dev, &dev_priv->ring[RCS]); | |
727 | if (gt_iir & GT_BSD_USER_INTERRUPT) | |
728 | notify_ring(dev, &dev_priv->ring[VCS]); | |
729 | } | |
730 | ||
f71d4af4 | 731 | static irqreturn_t ironlake_irq_handler(DRM_IRQ_ARGS) |
036a4a7d | 732 | { |
4697995b | 733 | struct drm_device *dev = (struct drm_device *) arg; |
036a4a7d ZW |
734 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
735 | int ret = IRQ_NONE; | |
3b8d8d91 | 736 | u32 de_iir, gt_iir, de_ier, pch_iir, pm_iir; |
2d7b8366 | 737 | u32 hotplug_mask; |
881f47b6 | 738 | |
4697995b JB |
739 | atomic_inc(&dev_priv->irq_received); |
740 | ||
2d109a84 ZN |
741 | /* disable master interrupt before clearing iir */ |
742 | de_ier = I915_READ(DEIER); | |
743 | I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL); | |
3143a2bf | 744 | POSTING_READ(DEIER); |
2d109a84 | 745 | |
036a4a7d ZW |
746 | de_iir = I915_READ(DEIIR); |
747 | gt_iir = I915_READ(GTIIR); | |
c650156a | 748 | pch_iir = I915_READ(SDEIIR); |
3b8d8d91 | 749 | pm_iir = I915_READ(GEN6_PMIIR); |
036a4a7d | 750 | |
3b8d8d91 JB |
751 | if (de_iir == 0 && gt_iir == 0 && pch_iir == 0 && |
752 | (!IS_GEN6(dev) || pm_iir == 0)) | |
c7c85101 | 753 | goto done; |
036a4a7d | 754 | |
2d7b8366 YL |
755 | if (HAS_PCH_CPT(dev)) |
756 | hotplug_mask = SDE_HOTPLUG_MASK_CPT; | |
757 | else | |
758 | hotplug_mask = SDE_HOTPLUG_MASK; | |
759 | ||
c7c85101 | 760 | ret = IRQ_HANDLED; |
036a4a7d | 761 | |
e7b4c6b1 DV |
762 | if (IS_GEN5(dev)) |
763 | ilk_gt_irq_handler(dev, dev_priv, gt_iir); | |
764 | else | |
765 | snb_gt_irq_handler(dev, dev_priv, gt_iir); | |
01c66889 | 766 | |
c7c85101 | 767 | if (de_iir & DE_GSE) |
3b617967 | 768 | intel_opregion_gse_intr(dev); |
c650156a | 769 | |
f072d2e7 | 770 | if (de_iir & DE_PLANEA_FLIP_DONE) { |
013d5aa2 | 771 | intel_prepare_page_flip(dev, 0); |
2bbda389 | 772 | intel_finish_page_flip_plane(dev, 0); |
f072d2e7 | 773 | } |
013d5aa2 | 774 | |
f072d2e7 | 775 | if (de_iir & DE_PLANEB_FLIP_DONE) { |
013d5aa2 | 776 | intel_prepare_page_flip(dev, 1); |
2bbda389 | 777 | intel_finish_page_flip_plane(dev, 1); |
f072d2e7 | 778 | } |
013d5aa2 | 779 | |
f072d2e7 | 780 | if (de_iir & DE_PIPEA_VBLANK) |
c062df61 LP |
781 | drm_handle_vblank(dev, 0); |
782 | ||
f072d2e7 | 783 | if (de_iir & DE_PIPEB_VBLANK) |
c062df61 LP |
784 | drm_handle_vblank(dev, 1); |
785 | ||
c7c85101 | 786 | /* check event from PCH */ |
776ad806 JB |
787 | if (de_iir & DE_PCH_EVENT) { |
788 | if (pch_iir & hotplug_mask) | |
789 | queue_work(dev_priv->wq, &dev_priv->hotplug_work); | |
23e81d69 AJ |
790 | if (HAS_PCH_CPT(dev)) |
791 | cpt_irq_handler(dev, pch_iir); | |
792 | else | |
793 | ibx_irq_handler(dev, pch_iir); | |
776ad806 | 794 | } |
036a4a7d | 795 | |
f97108d1 | 796 | if (de_iir & DE_PCU_EVENT) { |
7648fa99 | 797 | I915_WRITE16(MEMINTRSTS, I915_READ(MEMINTRSTS)); |
f97108d1 JB |
798 | i915_handle_rps_change(dev); |
799 | } | |
800 | ||
fc6826d1 CW |
801 | if (IS_GEN6(dev) && pm_iir & GEN6_PM_DEFERRED_EVENTS) |
802 | gen6_queue_rps_work(dev_priv, pm_iir); | |
3b8d8d91 | 803 | |
c7c85101 ZN |
804 | /* should clear PCH hotplug event before clear CPU irq */ |
805 | I915_WRITE(SDEIIR, pch_iir); | |
806 | I915_WRITE(GTIIR, gt_iir); | |
807 | I915_WRITE(DEIIR, de_iir); | |
4912d041 | 808 | I915_WRITE(GEN6_PMIIR, pm_iir); |
c7c85101 ZN |
809 | |
810 | done: | |
2d109a84 | 811 | I915_WRITE(DEIER, de_ier); |
3143a2bf | 812 | POSTING_READ(DEIER); |
2d109a84 | 813 | |
036a4a7d ZW |
814 | return ret; |
815 | } | |
816 | ||
8a905236 JB |
817 | /** |
818 | * i915_error_work_func - do process context error handling work | |
819 | * @work: work struct | |
820 | * | |
821 | * Fire an error uevent so userspace can see that a hang or error | |
822 | * was detected. | |
823 | */ | |
824 | static void i915_error_work_func(struct work_struct *work) | |
825 | { | |
826 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, | |
827 | error_work); | |
828 | struct drm_device *dev = dev_priv->dev; | |
f316a42c BG |
829 | char *error_event[] = { "ERROR=1", NULL }; |
830 | char *reset_event[] = { "RESET=1", NULL }; | |
831 | char *reset_done_event[] = { "ERROR=0", NULL }; | |
8a905236 | 832 | |
f316a42c BG |
833 | kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, error_event); |
834 | ||
ba1234d1 | 835 | if (atomic_read(&dev_priv->mm.wedged)) { |
f803aa55 CW |
836 | DRM_DEBUG_DRIVER("resetting chip\n"); |
837 | kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, reset_event); | |
d4b8bb2a | 838 | if (!i915_reset(dev)) { |
f803aa55 CW |
839 | atomic_set(&dev_priv->mm.wedged, 0); |
840 | kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, reset_done_event); | |
f316a42c | 841 | } |
30dbf0c0 | 842 | complete_all(&dev_priv->error_completion); |
f316a42c | 843 | } |
8a905236 JB |
844 | } |
845 | ||
3bd3c932 | 846 | #ifdef CONFIG_DEBUG_FS |
9df30794 | 847 | static struct drm_i915_error_object * |
bcfb2e28 | 848 | i915_error_object_create(struct drm_i915_private *dev_priv, |
05394f39 | 849 | struct drm_i915_gem_object *src) |
9df30794 CW |
850 | { |
851 | struct drm_i915_error_object *dst; | |
9df30794 | 852 | int page, page_count; |
e56660dd | 853 | u32 reloc_offset; |
9df30794 | 854 | |
05394f39 | 855 | if (src == NULL || src->pages == NULL) |
9df30794 CW |
856 | return NULL; |
857 | ||
05394f39 | 858 | page_count = src->base.size / PAGE_SIZE; |
9df30794 | 859 | |
0206e353 | 860 | dst = kmalloc(sizeof(*dst) + page_count * sizeof(u32 *), GFP_ATOMIC); |
9df30794 CW |
861 | if (dst == NULL) |
862 | return NULL; | |
863 | ||
05394f39 | 864 | reloc_offset = src->gtt_offset; |
9df30794 | 865 | for (page = 0; page < page_count; page++) { |
788885ae | 866 | unsigned long flags; |
e56660dd | 867 | void *d; |
788885ae | 868 | |
e56660dd | 869 | d = kmalloc(PAGE_SIZE, GFP_ATOMIC); |
9df30794 CW |
870 | if (d == NULL) |
871 | goto unwind; | |
e56660dd | 872 | |
788885ae | 873 | local_irq_save(flags); |
74898d7e DV |
874 | if (reloc_offset < dev_priv->mm.gtt_mappable_end && |
875 | src->has_global_gtt_mapping) { | |
172975aa CW |
876 | void __iomem *s; |
877 | ||
878 | /* Simply ignore tiling or any overlapping fence. | |
879 | * It's part of the error state, and this hopefully | |
880 | * captures what the GPU read. | |
881 | */ | |
882 | ||
883 | s = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping, | |
884 | reloc_offset); | |
885 | memcpy_fromio(d, s, PAGE_SIZE); | |
886 | io_mapping_unmap_atomic(s); | |
887 | } else { | |
888 | void *s; | |
889 | ||
890 | drm_clflush_pages(&src->pages[page], 1); | |
891 | ||
892 | s = kmap_atomic(src->pages[page]); | |
893 | memcpy(d, s, PAGE_SIZE); | |
894 | kunmap_atomic(s); | |
895 | ||
896 | drm_clflush_pages(&src->pages[page], 1); | |
897 | } | |
788885ae | 898 | local_irq_restore(flags); |
e56660dd | 899 | |
9df30794 | 900 | dst->pages[page] = d; |
e56660dd CW |
901 | |
902 | reloc_offset += PAGE_SIZE; | |
9df30794 CW |
903 | } |
904 | dst->page_count = page_count; | |
05394f39 | 905 | dst->gtt_offset = src->gtt_offset; |
9df30794 CW |
906 | |
907 | return dst; | |
908 | ||
909 | unwind: | |
910 | while (page--) | |
911 | kfree(dst->pages[page]); | |
912 | kfree(dst); | |
913 | return NULL; | |
914 | } | |
915 | ||
916 | static void | |
917 | i915_error_object_free(struct drm_i915_error_object *obj) | |
918 | { | |
919 | int page; | |
920 | ||
921 | if (obj == NULL) | |
922 | return; | |
923 | ||
924 | for (page = 0; page < obj->page_count; page++) | |
925 | kfree(obj->pages[page]); | |
926 | ||
927 | kfree(obj); | |
928 | } | |
929 | ||
742cbee8 DV |
930 | void |
931 | i915_error_state_free(struct kref *error_ref) | |
9df30794 | 932 | { |
742cbee8 DV |
933 | struct drm_i915_error_state *error = container_of(error_ref, |
934 | typeof(*error), ref); | |
e2f973d5 CW |
935 | int i; |
936 | ||
52d39a21 CW |
937 | for (i = 0; i < ARRAY_SIZE(error->ring); i++) { |
938 | i915_error_object_free(error->ring[i].batchbuffer); | |
939 | i915_error_object_free(error->ring[i].ringbuffer); | |
940 | kfree(error->ring[i].requests); | |
941 | } | |
e2f973d5 | 942 | |
9df30794 | 943 | kfree(error->active_bo); |
6ef3d427 | 944 | kfree(error->overlay); |
9df30794 CW |
945 | kfree(error); |
946 | } | |
1b50247a CW |
947 | static void capture_bo(struct drm_i915_error_buffer *err, |
948 | struct drm_i915_gem_object *obj) | |
949 | { | |
950 | err->size = obj->base.size; | |
951 | err->name = obj->base.name; | |
952 | err->seqno = obj->last_rendering_seqno; | |
953 | err->gtt_offset = obj->gtt_offset; | |
954 | err->read_domains = obj->base.read_domains; | |
955 | err->write_domain = obj->base.write_domain; | |
956 | err->fence_reg = obj->fence_reg; | |
957 | err->pinned = 0; | |
958 | if (obj->pin_count > 0) | |
959 | err->pinned = 1; | |
960 | if (obj->user_pin_count > 0) | |
961 | err->pinned = -1; | |
962 | err->tiling = obj->tiling_mode; | |
963 | err->dirty = obj->dirty; | |
964 | err->purgeable = obj->madv != I915_MADV_WILLNEED; | |
965 | err->ring = obj->ring ? obj->ring->id : -1; | |
966 | err->cache_level = obj->cache_level; | |
967 | } | |
9df30794 | 968 | |
1b50247a CW |
969 | static u32 capture_active_bo(struct drm_i915_error_buffer *err, |
970 | int count, struct list_head *head) | |
c724e8a9 CW |
971 | { |
972 | struct drm_i915_gem_object *obj; | |
973 | int i = 0; | |
974 | ||
975 | list_for_each_entry(obj, head, mm_list) { | |
1b50247a | 976 | capture_bo(err++, obj); |
c724e8a9 CW |
977 | if (++i == count) |
978 | break; | |
1b50247a CW |
979 | } |
980 | ||
981 | return i; | |
982 | } | |
983 | ||
984 | static u32 capture_pinned_bo(struct drm_i915_error_buffer *err, | |
985 | int count, struct list_head *head) | |
986 | { | |
987 | struct drm_i915_gem_object *obj; | |
988 | int i = 0; | |
989 | ||
990 | list_for_each_entry(obj, head, gtt_list) { | |
991 | if (obj->pin_count == 0) | |
992 | continue; | |
c724e8a9 | 993 | |
1b50247a CW |
994 | capture_bo(err++, obj); |
995 | if (++i == count) | |
996 | break; | |
c724e8a9 CW |
997 | } |
998 | ||
999 | return i; | |
1000 | } | |
1001 | ||
748ebc60 CW |
1002 | static void i915_gem_record_fences(struct drm_device *dev, |
1003 | struct drm_i915_error_state *error) | |
1004 | { | |
1005 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1006 | int i; | |
1007 | ||
1008 | /* Fences */ | |
1009 | switch (INTEL_INFO(dev)->gen) { | |
775d17b6 | 1010 | case 7: |
748ebc60 CW |
1011 | case 6: |
1012 | for (i = 0; i < 16; i++) | |
1013 | error->fence[i] = I915_READ64(FENCE_REG_SANDYBRIDGE_0 + (i * 8)); | |
1014 | break; | |
1015 | case 5: | |
1016 | case 4: | |
1017 | for (i = 0; i < 16; i++) | |
1018 | error->fence[i] = I915_READ64(FENCE_REG_965_0 + (i * 8)); | |
1019 | break; | |
1020 | case 3: | |
1021 | if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) | |
1022 | for (i = 0; i < 8; i++) | |
1023 | error->fence[i+8] = I915_READ(FENCE_REG_945_8 + (i * 4)); | |
1024 | case 2: | |
1025 | for (i = 0; i < 8; i++) | |
1026 | error->fence[i] = I915_READ(FENCE_REG_830_0 + (i * 4)); | |
1027 | break; | |
1028 | ||
1029 | } | |
1030 | } | |
1031 | ||
bcfb2e28 CW |
1032 | static struct drm_i915_error_object * |
1033 | i915_error_first_batchbuffer(struct drm_i915_private *dev_priv, | |
1034 | struct intel_ring_buffer *ring) | |
1035 | { | |
1036 | struct drm_i915_gem_object *obj; | |
1037 | u32 seqno; | |
1038 | ||
1039 | if (!ring->get_seqno) | |
1040 | return NULL; | |
1041 | ||
1042 | seqno = ring->get_seqno(ring); | |
1043 | list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) { | |
1044 | if (obj->ring != ring) | |
1045 | continue; | |
1046 | ||
c37d9a5d | 1047 | if (i915_seqno_passed(seqno, obj->last_rendering_seqno)) |
bcfb2e28 CW |
1048 | continue; |
1049 | ||
1050 | if ((obj->base.read_domains & I915_GEM_DOMAIN_COMMAND) == 0) | |
1051 | continue; | |
1052 | ||
1053 | /* We need to copy these to an anonymous buffer as the simplest | |
1054 | * method to avoid being overwritten by userspace. | |
1055 | */ | |
1056 | return i915_error_object_create(dev_priv, obj); | |
1057 | } | |
1058 | ||
1059 | return NULL; | |
1060 | } | |
1061 | ||
d27b1e0e DV |
1062 | static void i915_record_ring_state(struct drm_device *dev, |
1063 | struct drm_i915_error_state *error, | |
1064 | struct intel_ring_buffer *ring) | |
1065 | { | |
1066 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1067 | ||
33f3f518 | 1068 | if (INTEL_INFO(dev)->gen >= 6) { |
12f55818 | 1069 | error->rc_psmi[ring->id] = I915_READ(ring->mmio_base + 0x50); |
33f3f518 | 1070 | error->fault_reg[ring->id] = I915_READ(RING_FAULT_REG(ring)); |
7e3b8737 DV |
1071 | error->semaphore_mboxes[ring->id][0] |
1072 | = I915_READ(RING_SYNC_0(ring->mmio_base)); | |
1073 | error->semaphore_mboxes[ring->id][1] | |
1074 | = I915_READ(RING_SYNC_1(ring->mmio_base)); | |
33f3f518 | 1075 | } |
c1cd90ed | 1076 | |
d27b1e0e | 1077 | if (INTEL_INFO(dev)->gen >= 4) { |
9d2f41fa | 1078 | error->faddr[ring->id] = I915_READ(RING_DMA_FADD(ring->mmio_base)); |
d27b1e0e DV |
1079 | error->ipeir[ring->id] = I915_READ(RING_IPEIR(ring->mmio_base)); |
1080 | error->ipehr[ring->id] = I915_READ(RING_IPEHR(ring->mmio_base)); | |
1081 | error->instdone[ring->id] = I915_READ(RING_INSTDONE(ring->mmio_base)); | |
c1cd90ed | 1082 | error->instps[ring->id] = I915_READ(RING_INSTPS(ring->mmio_base)); |
d27b1e0e | 1083 | if (ring->id == RCS) { |
d27b1e0e DV |
1084 | error->instdone1 = I915_READ(INSTDONE1); |
1085 | error->bbaddr = I915_READ64(BB_ADDR); | |
1086 | } | |
1087 | } else { | |
9d2f41fa | 1088 | error->faddr[ring->id] = I915_READ(DMA_FADD_I8XX); |
d27b1e0e DV |
1089 | error->ipeir[ring->id] = I915_READ(IPEIR); |
1090 | error->ipehr[ring->id] = I915_READ(IPEHR); | |
1091 | error->instdone[ring->id] = I915_READ(INSTDONE); | |
d27b1e0e DV |
1092 | } |
1093 | ||
9574b3fe | 1094 | error->waiting[ring->id] = waitqueue_active(&ring->irq_queue); |
c1cd90ed | 1095 | error->instpm[ring->id] = I915_READ(RING_INSTPM(ring->mmio_base)); |
d27b1e0e DV |
1096 | error->seqno[ring->id] = ring->get_seqno(ring); |
1097 | error->acthd[ring->id] = intel_ring_get_active_head(ring); | |
c1cd90ed DV |
1098 | error->head[ring->id] = I915_READ_HEAD(ring); |
1099 | error->tail[ring->id] = I915_READ_TAIL(ring); | |
7e3b8737 DV |
1100 | |
1101 | error->cpu_ring_head[ring->id] = ring->head; | |
1102 | error->cpu_ring_tail[ring->id] = ring->tail; | |
d27b1e0e DV |
1103 | } |
1104 | ||
52d39a21 CW |
1105 | static void i915_gem_record_rings(struct drm_device *dev, |
1106 | struct drm_i915_error_state *error) | |
1107 | { | |
1108 | struct drm_i915_private *dev_priv = dev->dev_private; | |
b4519513 | 1109 | struct intel_ring_buffer *ring; |
52d39a21 CW |
1110 | struct drm_i915_gem_request *request; |
1111 | int i, count; | |
1112 | ||
b4519513 | 1113 | for_each_ring(ring, dev_priv, i) { |
52d39a21 CW |
1114 | i915_record_ring_state(dev, error, ring); |
1115 | ||
1116 | error->ring[i].batchbuffer = | |
1117 | i915_error_first_batchbuffer(dev_priv, ring); | |
1118 | ||
1119 | error->ring[i].ringbuffer = | |
1120 | i915_error_object_create(dev_priv, ring->obj); | |
1121 | ||
1122 | count = 0; | |
1123 | list_for_each_entry(request, &ring->request_list, list) | |
1124 | count++; | |
1125 | ||
1126 | error->ring[i].num_requests = count; | |
1127 | error->ring[i].requests = | |
1128 | kmalloc(count*sizeof(struct drm_i915_error_request), | |
1129 | GFP_ATOMIC); | |
1130 | if (error->ring[i].requests == NULL) { | |
1131 | error->ring[i].num_requests = 0; | |
1132 | continue; | |
1133 | } | |
1134 | ||
1135 | count = 0; | |
1136 | list_for_each_entry(request, &ring->request_list, list) { | |
1137 | struct drm_i915_error_request *erq; | |
1138 | ||
1139 | erq = &error->ring[i].requests[count++]; | |
1140 | erq->seqno = request->seqno; | |
1141 | erq->jiffies = request->emitted_jiffies; | |
ee4f42b1 | 1142 | erq->tail = request->tail; |
52d39a21 CW |
1143 | } |
1144 | } | |
1145 | } | |
1146 | ||
8a905236 JB |
1147 | /** |
1148 | * i915_capture_error_state - capture an error record for later analysis | |
1149 | * @dev: drm device | |
1150 | * | |
1151 | * Should be called when an error is detected (either a hang or an error | |
1152 | * interrupt) to capture error state from the time of the error. Fills | |
1153 | * out a structure which becomes available in debugfs for user level tools | |
1154 | * to pick up. | |
1155 | */ | |
63eeaf38 JB |
1156 | static void i915_capture_error_state(struct drm_device *dev) |
1157 | { | |
1158 | struct drm_i915_private *dev_priv = dev->dev_private; | |
05394f39 | 1159 | struct drm_i915_gem_object *obj; |
63eeaf38 JB |
1160 | struct drm_i915_error_state *error; |
1161 | unsigned long flags; | |
9db4a9c7 | 1162 | int i, pipe; |
63eeaf38 JB |
1163 | |
1164 | spin_lock_irqsave(&dev_priv->error_lock, flags); | |
9df30794 CW |
1165 | error = dev_priv->first_error; |
1166 | spin_unlock_irqrestore(&dev_priv->error_lock, flags); | |
1167 | if (error) | |
1168 | return; | |
63eeaf38 | 1169 | |
9db4a9c7 | 1170 | /* Account for pipe specific data like PIPE*STAT */ |
33f3f518 | 1171 | error = kzalloc(sizeof(*error), GFP_ATOMIC); |
63eeaf38 | 1172 | if (!error) { |
9df30794 CW |
1173 | DRM_DEBUG_DRIVER("out of memory, not capturing error state\n"); |
1174 | return; | |
63eeaf38 JB |
1175 | } |
1176 | ||
b6f7833b CW |
1177 | DRM_INFO("capturing error event; look for more information in /debug/dri/%d/i915_error_state\n", |
1178 | dev->primary->index); | |
2fa772f3 | 1179 | |
742cbee8 | 1180 | kref_init(&error->ref); |
63eeaf38 JB |
1181 | error->eir = I915_READ(EIR); |
1182 | error->pgtbl_er = I915_READ(PGTBL_ER); | |
b9a3906b | 1183 | error->ccid = I915_READ(CCID); |
be998e2e BW |
1184 | |
1185 | if (HAS_PCH_SPLIT(dev)) | |
1186 | error->ier = I915_READ(DEIER) | I915_READ(GTIER); | |
1187 | else if (IS_VALLEYVIEW(dev)) | |
1188 | error->ier = I915_READ(GTIER) | I915_READ(VLV_IER); | |
1189 | else if (IS_GEN2(dev)) | |
1190 | error->ier = I915_READ16(IER); | |
1191 | else | |
1192 | error->ier = I915_READ(IER); | |
1193 | ||
9db4a9c7 JB |
1194 | for_each_pipe(pipe) |
1195 | error->pipestat[pipe] = I915_READ(PIPESTAT(pipe)); | |
d27b1e0e | 1196 | |
33f3f518 | 1197 | if (INTEL_INFO(dev)->gen >= 6) { |
f406839f | 1198 | error->error = I915_READ(ERROR_GEN6); |
33f3f518 DV |
1199 | error->done_reg = I915_READ(DONE_REG); |
1200 | } | |
d27b1e0e | 1201 | |
748ebc60 | 1202 | i915_gem_record_fences(dev, error); |
52d39a21 | 1203 | i915_gem_record_rings(dev, error); |
9df30794 | 1204 | |
c724e8a9 | 1205 | /* Record buffers on the active and pinned lists. */ |
9df30794 | 1206 | error->active_bo = NULL; |
c724e8a9 | 1207 | error->pinned_bo = NULL; |
9df30794 | 1208 | |
bcfb2e28 CW |
1209 | i = 0; |
1210 | list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) | |
1211 | i++; | |
1212 | error->active_bo_count = i; | |
1b50247a CW |
1213 | list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) |
1214 | if (obj->pin_count) | |
1215 | i++; | |
bcfb2e28 | 1216 | error->pinned_bo_count = i - error->active_bo_count; |
c724e8a9 | 1217 | |
8e934dbf CW |
1218 | error->active_bo = NULL; |
1219 | error->pinned_bo = NULL; | |
bcfb2e28 CW |
1220 | if (i) { |
1221 | error->active_bo = kmalloc(sizeof(*error->active_bo)*i, | |
9df30794 | 1222 | GFP_ATOMIC); |
c724e8a9 CW |
1223 | if (error->active_bo) |
1224 | error->pinned_bo = | |
1225 | error->active_bo + error->active_bo_count; | |
9df30794 CW |
1226 | } |
1227 | ||
c724e8a9 CW |
1228 | if (error->active_bo) |
1229 | error->active_bo_count = | |
1b50247a CW |
1230 | capture_active_bo(error->active_bo, |
1231 | error->active_bo_count, | |
1232 | &dev_priv->mm.active_list); | |
c724e8a9 CW |
1233 | |
1234 | if (error->pinned_bo) | |
1235 | error->pinned_bo_count = | |
1b50247a CW |
1236 | capture_pinned_bo(error->pinned_bo, |
1237 | error->pinned_bo_count, | |
1238 | &dev_priv->mm.gtt_list); | |
c724e8a9 | 1239 | |
9df30794 CW |
1240 | do_gettimeofday(&error->time); |
1241 | ||
6ef3d427 | 1242 | error->overlay = intel_overlay_capture_error_state(dev); |
c4a1d9e4 | 1243 | error->display = intel_display_capture_error_state(dev); |
6ef3d427 | 1244 | |
9df30794 CW |
1245 | spin_lock_irqsave(&dev_priv->error_lock, flags); |
1246 | if (dev_priv->first_error == NULL) { | |
1247 | dev_priv->first_error = error; | |
1248 | error = NULL; | |
1249 | } | |
63eeaf38 | 1250 | spin_unlock_irqrestore(&dev_priv->error_lock, flags); |
9df30794 CW |
1251 | |
1252 | if (error) | |
742cbee8 | 1253 | i915_error_state_free(&error->ref); |
9df30794 CW |
1254 | } |
1255 | ||
1256 | void i915_destroy_error_state(struct drm_device *dev) | |
1257 | { | |
1258 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1259 | struct drm_i915_error_state *error; | |
6dc0e816 | 1260 | unsigned long flags; |
9df30794 | 1261 | |
6dc0e816 | 1262 | spin_lock_irqsave(&dev_priv->error_lock, flags); |
9df30794 CW |
1263 | error = dev_priv->first_error; |
1264 | dev_priv->first_error = NULL; | |
6dc0e816 | 1265 | spin_unlock_irqrestore(&dev_priv->error_lock, flags); |
9df30794 CW |
1266 | |
1267 | if (error) | |
742cbee8 | 1268 | kref_put(&error->ref, i915_error_state_free); |
63eeaf38 | 1269 | } |
3bd3c932 CW |
1270 | #else |
1271 | #define i915_capture_error_state(x) | |
1272 | #endif | |
63eeaf38 | 1273 | |
35aed2e6 | 1274 | static void i915_report_and_clear_eir(struct drm_device *dev) |
8a905236 JB |
1275 | { |
1276 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1277 | u32 eir = I915_READ(EIR); | |
9db4a9c7 | 1278 | int pipe; |
8a905236 | 1279 | |
35aed2e6 CW |
1280 | if (!eir) |
1281 | return; | |
8a905236 | 1282 | |
a70491cc | 1283 | pr_err("render error detected, EIR: 0x%08x\n", eir); |
8a905236 JB |
1284 | |
1285 | if (IS_G4X(dev)) { | |
1286 | if (eir & (GM45_ERROR_MEM_PRIV | GM45_ERROR_CP_PRIV)) { | |
1287 | u32 ipeir = I915_READ(IPEIR_I965); | |
1288 | ||
a70491cc JP |
1289 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR_I965)); |
1290 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR_I965)); | |
1291 | pr_err(" INSTDONE: 0x%08x\n", | |
8a905236 | 1292 | I915_READ(INSTDONE_I965)); |
a70491cc JP |
1293 | pr_err(" INSTPS: 0x%08x\n", I915_READ(INSTPS)); |
1294 | pr_err(" INSTDONE1: 0x%08x\n", I915_READ(INSTDONE1)); | |
1295 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD_I965)); | |
8a905236 | 1296 | I915_WRITE(IPEIR_I965, ipeir); |
3143a2bf | 1297 | POSTING_READ(IPEIR_I965); |
8a905236 JB |
1298 | } |
1299 | if (eir & GM45_ERROR_PAGE_TABLE) { | |
1300 | u32 pgtbl_err = I915_READ(PGTBL_ER); | |
a70491cc JP |
1301 | pr_err("page table error\n"); |
1302 | pr_err(" PGTBL_ER: 0x%08x\n", pgtbl_err); | |
8a905236 | 1303 | I915_WRITE(PGTBL_ER, pgtbl_err); |
3143a2bf | 1304 | POSTING_READ(PGTBL_ER); |
8a905236 JB |
1305 | } |
1306 | } | |
1307 | ||
a6c45cf0 | 1308 | if (!IS_GEN2(dev)) { |
8a905236 JB |
1309 | if (eir & I915_ERROR_PAGE_TABLE) { |
1310 | u32 pgtbl_err = I915_READ(PGTBL_ER); | |
a70491cc JP |
1311 | pr_err("page table error\n"); |
1312 | pr_err(" PGTBL_ER: 0x%08x\n", pgtbl_err); | |
8a905236 | 1313 | I915_WRITE(PGTBL_ER, pgtbl_err); |
3143a2bf | 1314 | POSTING_READ(PGTBL_ER); |
8a905236 JB |
1315 | } |
1316 | } | |
1317 | ||
1318 | if (eir & I915_ERROR_MEMORY_REFRESH) { | |
a70491cc | 1319 | pr_err("memory refresh error:\n"); |
9db4a9c7 | 1320 | for_each_pipe(pipe) |
a70491cc | 1321 | pr_err("pipe %c stat: 0x%08x\n", |
9db4a9c7 | 1322 | pipe_name(pipe), I915_READ(PIPESTAT(pipe))); |
8a905236 JB |
1323 | /* pipestat has already been acked */ |
1324 | } | |
1325 | if (eir & I915_ERROR_INSTRUCTION) { | |
a70491cc JP |
1326 | pr_err("instruction error\n"); |
1327 | pr_err(" INSTPM: 0x%08x\n", I915_READ(INSTPM)); | |
a6c45cf0 | 1328 | if (INTEL_INFO(dev)->gen < 4) { |
8a905236 JB |
1329 | u32 ipeir = I915_READ(IPEIR); |
1330 | ||
a70491cc JP |
1331 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR)); |
1332 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR)); | |
1333 | pr_err(" INSTDONE: 0x%08x\n", I915_READ(INSTDONE)); | |
1334 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD)); | |
8a905236 | 1335 | I915_WRITE(IPEIR, ipeir); |
3143a2bf | 1336 | POSTING_READ(IPEIR); |
8a905236 JB |
1337 | } else { |
1338 | u32 ipeir = I915_READ(IPEIR_I965); | |
1339 | ||
a70491cc JP |
1340 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR_I965)); |
1341 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR_I965)); | |
1342 | pr_err(" INSTDONE: 0x%08x\n", | |
8a905236 | 1343 | I915_READ(INSTDONE_I965)); |
a70491cc JP |
1344 | pr_err(" INSTPS: 0x%08x\n", I915_READ(INSTPS)); |
1345 | pr_err(" INSTDONE1: 0x%08x\n", I915_READ(INSTDONE1)); | |
1346 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD_I965)); | |
8a905236 | 1347 | I915_WRITE(IPEIR_I965, ipeir); |
3143a2bf | 1348 | POSTING_READ(IPEIR_I965); |
8a905236 JB |
1349 | } |
1350 | } | |
1351 | ||
1352 | I915_WRITE(EIR, eir); | |
3143a2bf | 1353 | POSTING_READ(EIR); |
8a905236 JB |
1354 | eir = I915_READ(EIR); |
1355 | if (eir) { | |
1356 | /* | |
1357 | * some errors might have become stuck, | |
1358 | * mask them. | |
1359 | */ | |
1360 | DRM_ERROR("EIR stuck: 0x%08x, masking\n", eir); | |
1361 | I915_WRITE(EMR, I915_READ(EMR) | eir); | |
1362 | I915_WRITE(IIR, I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
1363 | } | |
35aed2e6 CW |
1364 | } |
1365 | ||
1366 | /** | |
1367 | * i915_handle_error - handle an error interrupt | |
1368 | * @dev: drm device | |
1369 | * | |
1370 | * Do some basic checking of regsiter state at error interrupt time and | |
1371 | * dump it to the syslog. Also call i915_capture_error_state() to make | |
1372 | * sure we get a record and make it available in debugfs. Fire a uevent | |
1373 | * so userspace knows something bad happened (should trigger collection | |
1374 | * of a ring dump etc.). | |
1375 | */ | |
527f9e90 | 1376 | void i915_handle_error(struct drm_device *dev, bool wedged) |
35aed2e6 CW |
1377 | { |
1378 | struct drm_i915_private *dev_priv = dev->dev_private; | |
b4519513 CW |
1379 | struct intel_ring_buffer *ring; |
1380 | int i; | |
35aed2e6 CW |
1381 | |
1382 | i915_capture_error_state(dev); | |
1383 | i915_report_and_clear_eir(dev); | |
8a905236 | 1384 | |
ba1234d1 | 1385 | if (wedged) { |
30dbf0c0 | 1386 | INIT_COMPLETION(dev_priv->error_completion); |
ba1234d1 BG |
1387 | atomic_set(&dev_priv->mm.wedged, 1); |
1388 | ||
11ed50ec BG |
1389 | /* |
1390 | * Wakeup waiting processes so they don't hang | |
1391 | */ | |
b4519513 CW |
1392 | for_each_ring(ring, dev_priv, i) |
1393 | wake_up_all(&ring->irq_queue); | |
11ed50ec BG |
1394 | } |
1395 | ||
9c9fe1f8 | 1396 | queue_work(dev_priv->wq, &dev_priv->error_work); |
8a905236 JB |
1397 | } |
1398 | ||
4e5359cd SF |
1399 | static void i915_pageflip_stall_check(struct drm_device *dev, int pipe) |
1400 | { | |
1401 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1402 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
1403 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
05394f39 | 1404 | struct drm_i915_gem_object *obj; |
4e5359cd SF |
1405 | struct intel_unpin_work *work; |
1406 | unsigned long flags; | |
1407 | bool stall_detected; | |
1408 | ||
1409 | /* Ignore early vblank irqs */ | |
1410 | if (intel_crtc == NULL) | |
1411 | return; | |
1412 | ||
1413 | spin_lock_irqsave(&dev->event_lock, flags); | |
1414 | work = intel_crtc->unpin_work; | |
1415 | ||
1416 | if (work == NULL || work->pending || !work->enable_stall_check) { | |
1417 | /* Either the pending flip IRQ arrived, or we're too early. Don't check */ | |
1418 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
1419 | return; | |
1420 | } | |
1421 | ||
1422 | /* Potential stall - if we see that the flip has happened, assume a missed interrupt */ | |
05394f39 | 1423 | obj = work->pending_flip_obj; |
a6c45cf0 | 1424 | if (INTEL_INFO(dev)->gen >= 4) { |
9db4a9c7 | 1425 | int dspsurf = DSPSURF(intel_crtc->plane); |
446f2545 AR |
1426 | stall_detected = I915_HI_DISPBASE(I915_READ(dspsurf)) == |
1427 | obj->gtt_offset; | |
4e5359cd | 1428 | } else { |
9db4a9c7 | 1429 | int dspaddr = DSPADDR(intel_crtc->plane); |
05394f39 | 1430 | stall_detected = I915_READ(dspaddr) == (obj->gtt_offset + |
01f2c773 | 1431 | crtc->y * crtc->fb->pitches[0] + |
4e5359cd SF |
1432 | crtc->x * crtc->fb->bits_per_pixel/8); |
1433 | } | |
1434 | ||
1435 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
1436 | ||
1437 | if (stall_detected) { | |
1438 | DRM_DEBUG_DRIVER("Pageflip stall detected\n"); | |
1439 | intel_prepare_page_flip(dev, intel_crtc->plane); | |
1440 | } | |
1441 | } | |
1442 | ||
42f52ef8 KP |
1443 | /* Called from drm generic code, passed 'crtc' which |
1444 | * we use as a pipe index | |
1445 | */ | |
f71d4af4 | 1446 | static int i915_enable_vblank(struct drm_device *dev, int pipe) |
0a3e67a4 JB |
1447 | { |
1448 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
e9d21d7f | 1449 | unsigned long irqflags; |
71e0ffa5 | 1450 | |
5eddb70b | 1451 | if (!i915_pipe_enabled(dev, pipe)) |
71e0ffa5 | 1452 | return -EINVAL; |
0a3e67a4 | 1453 | |
1ec14ad3 | 1454 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
f796cf8f | 1455 | if (INTEL_INFO(dev)->gen >= 4) |
7c463586 KP |
1456 | i915_enable_pipestat(dev_priv, pipe, |
1457 | PIPE_START_VBLANK_INTERRUPT_ENABLE); | |
e9d21d7f | 1458 | else |
7c463586 KP |
1459 | i915_enable_pipestat(dev_priv, pipe, |
1460 | PIPE_VBLANK_INTERRUPT_ENABLE); | |
8692d00e CW |
1461 | |
1462 | /* maintain vblank delivery even in deep C-states */ | |
1463 | if (dev_priv->info->gen == 3) | |
6b26c86d | 1464 | I915_WRITE(INSTPM, _MASKED_BIT_DISABLE(INSTPM_AGPBUSY_DIS)); |
1ec14ad3 | 1465 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
8692d00e | 1466 | |
0a3e67a4 JB |
1467 | return 0; |
1468 | } | |
1469 | ||
f71d4af4 | 1470 | static int ironlake_enable_vblank(struct drm_device *dev, int pipe) |
f796cf8f JB |
1471 | { |
1472 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1473 | unsigned long irqflags; | |
1474 | ||
1475 | if (!i915_pipe_enabled(dev, pipe)) | |
1476 | return -EINVAL; | |
1477 | ||
1478 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
1479 | ironlake_enable_display_irq(dev_priv, (pipe == 0) ? | |
0206e353 | 1480 | DE_PIPEA_VBLANK : DE_PIPEB_VBLANK); |
f796cf8f JB |
1481 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
1482 | ||
1483 | return 0; | |
1484 | } | |
1485 | ||
f71d4af4 | 1486 | static int ivybridge_enable_vblank(struct drm_device *dev, int pipe) |
b1f14ad0 JB |
1487 | { |
1488 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1489 | unsigned long irqflags; | |
1490 | ||
1491 | if (!i915_pipe_enabled(dev, pipe)) | |
1492 | return -EINVAL; | |
1493 | ||
1494 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
b615b57a CW |
1495 | ironlake_enable_display_irq(dev_priv, |
1496 | DE_PIPEA_VBLANK_IVB << (5 * pipe)); | |
b1f14ad0 JB |
1497 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
1498 | ||
1499 | return 0; | |
1500 | } | |
1501 | ||
7e231dbe JB |
1502 | static int valleyview_enable_vblank(struct drm_device *dev, int pipe) |
1503 | { | |
1504 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1505 | unsigned long irqflags; | |
31acc7f5 | 1506 | u32 imr; |
7e231dbe JB |
1507 | |
1508 | if (!i915_pipe_enabled(dev, pipe)) | |
1509 | return -EINVAL; | |
1510 | ||
1511 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
7e231dbe | 1512 | imr = I915_READ(VLV_IMR); |
31acc7f5 | 1513 | if (pipe == 0) |
7e231dbe | 1514 | imr &= ~I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT; |
31acc7f5 | 1515 | else |
7e231dbe | 1516 | imr &= ~I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; |
7e231dbe | 1517 | I915_WRITE(VLV_IMR, imr); |
31acc7f5 JB |
1518 | i915_enable_pipestat(dev_priv, pipe, |
1519 | PIPE_START_VBLANK_INTERRUPT_ENABLE); | |
7e231dbe JB |
1520 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
1521 | ||
1522 | return 0; | |
1523 | } | |
1524 | ||
42f52ef8 KP |
1525 | /* Called from drm generic code, passed 'crtc' which |
1526 | * we use as a pipe index | |
1527 | */ | |
f71d4af4 | 1528 | static void i915_disable_vblank(struct drm_device *dev, int pipe) |
0a3e67a4 JB |
1529 | { |
1530 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
e9d21d7f | 1531 | unsigned long irqflags; |
0a3e67a4 | 1532 | |
1ec14ad3 | 1533 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
8692d00e | 1534 | if (dev_priv->info->gen == 3) |
6b26c86d | 1535 | I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_AGPBUSY_DIS)); |
8692d00e | 1536 | |
f796cf8f JB |
1537 | i915_disable_pipestat(dev_priv, pipe, |
1538 | PIPE_VBLANK_INTERRUPT_ENABLE | | |
1539 | PIPE_START_VBLANK_INTERRUPT_ENABLE); | |
1540 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
1541 | } | |
1542 | ||
f71d4af4 | 1543 | static void ironlake_disable_vblank(struct drm_device *dev, int pipe) |
f796cf8f JB |
1544 | { |
1545 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1546 | unsigned long irqflags; | |
1547 | ||
1548 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
1549 | ironlake_disable_display_irq(dev_priv, (pipe == 0) ? | |
0206e353 | 1550 | DE_PIPEA_VBLANK : DE_PIPEB_VBLANK); |
1ec14ad3 | 1551 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
0a3e67a4 JB |
1552 | } |
1553 | ||
f71d4af4 | 1554 | static void ivybridge_disable_vblank(struct drm_device *dev, int pipe) |
b1f14ad0 JB |
1555 | { |
1556 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1557 | unsigned long irqflags; | |
1558 | ||
1559 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
b615b57a CW |
1560 | ironlake_disable_display_irq(dev_priv, |
1561 | DE_PIPEA_VBLANK_IVB << (pipe * 5)); | |
b1f14ad0 JB |
1562 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
1563 | } | |
1564 | ||
7e231dbe JB |
1565 | static void valleyview_disable_vblank(struct drm_device *dev, int pipe) |
1566 | { | |
1567 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1568 | unsigned long irqflags; | |
31acc7f5 | 1569 | u32 imr; |
7e231dbe JB |
1570 | |
1571 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
31acc7f5 JB |
1572 | i915_disable_pipestat(dev_priv, pipe, |
1573 | PIPE_START_VBLANK_INTERRUPT_ENABLE); | |
7e231dbe | 1574 | imr = I915_READ(VLV_IMR); |
31acc7f5 | 1575 | if (pipe == 0) |
7e231dbe | 1576 | imr |= I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT; |
31acc7f5 | 1577 | else |
7e231dbe | 1578 | imr |= I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; |
7e231dbe | 1579 | I915_WRITE(VLV_IMR, imr); |
7e231dbe JB |
1580 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
1581 | } | |
1582 | ||
893eead0 CW |
1583 | static u32 |
1584 | ring_last_seqno(struct intel_ring_buffer *ring) | |
852835f3 | 1585 | { |
893eead0 CW |
1586 | return list_entry(ring->request_list.prev, |
1587 | struct drm_i915_gem_request, list)->seqno; | |
1588 | } | |
1589 | ||
1590 | static bool i915_hangcheck_ring_idle(struct intel_ring_buffer *ring, bool *err) | |
1591 | { | |
1592 | if (list_empty(&ring->request_list) || | |
1593 | i915_seqno_passed(ring->get_seqno(ring), ring_last_seqno(ring))) { | |
1594 | /* Issue a wake-up to catch stuck h/w. */ | |
9574b3fe BW |
1595 | if (waitqueue_active(&ring->irq_queue)) { |
1596 | DRM_ERROR("Hangcheck timer elapsed... %s idle\n", | |
1597 | ring->name); | |
893eead0 CW |
1598 | wake_up_all(&ring->irq_queue); |
1599 | *err = true; | |
1600 | } | |
1601 | return true; | |
1602 | } | |
1603 | return false; | |
f65d9421 BG |
1604 | } |
1605 | ||
1ec14ad3 CW |
1606 | static bool kick_ring(struct intel_ring_buffer *ring) |
1607 | { | |
1608 | struct drm_device *dev = ring->dev; | |
1609 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1610 | u32 tmp = I915_READ_CTL(ring); | |
1611 | if (tmp & RING_WAIT) { | |
1612 | DRM_ERROR("Kicking stuck wait on %s\n", | |
1613 | ring->name); | |
1614 | I915_WRITE_CTL(ring, tmp); | |
1615 | return true; | |
1616 | } | |
1ec14ad3 CW |
1617 | return false; |
1618 | } | |
1619 | ||
d1e61e7f CW |
1620 | static bool i915_hangcheck_hung(struct drm_device *dev) |
1621 | { | |
1622 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1623 | ||
1624 | if (dev_priv->hangcheck_count++ > 1) { | |
b4519513 CW |
1625 | bool hung = true; |
1626 | ||
d1e61e7f CW |
1627 | DRM_ERROR("Hangcheck timer elapsed... GPU hung\n"); |
1628 | i915_handle_error(dev, true); | |
1629 | ||
1630 | if (!IS_GEN2(dev)) { | |
b4519513 CW |
1631 | struct intel_ring_buffer *ring; |
1632 | int i; | |
1633 | ||
d1e61e7f CW |
1634 | /* Is the chip hanging on a WAIT_FOR_EVENT? |
1635 | * If so we can simply poke the RB_WAIT bit | |
1636 | * and break the hang. This should work on | |
1637 | * all but the second generation chipsets. | |
1638 | */ | |
b4519513 CW |
1639 | for_each_ring(ring, dev_priv, i) |
1640 | hung &= !kick_ring(ring); | |
d1e61e7f CW |
1641 | } |
1642 | ||
b4519513 | 1643 | return hung; |
d1e61e7f CW |
1644 | } |
1645 | ||
1646 | return false; | |
1647 | } | |
1648 | ||
f65d9421 BG |
1649 | /** |
1650 | * This is called when the chip hasn't reported back with completed | |
1651 | * batchbuffers in a long time. The first time this is called we simply record | |
1652 | * ACTHD. If ACTHD hasn't changed by the time the hangcheck timer elapses | |
1653 | * again, we assume the chip is wedged and try to fix it. | |
1654 | */ | |
1655 | void i915_hangcheck_elapsed(unsigned long data) | |
1656 | { | |
1657 | struct drm_device *dev = (struct drm_device *)data; | |
1658 | drm_i915_private_t *dev_priv = dev->dev_private; | |
b4519513 CW |
1659 | uint32_t acthd[I915_NUM_RINGS], instdone, instdone1; |
1660 | struct intel_ring_buffer *ring; | |
1661 | bool err = false, idle; | |
1662 | int i; | |
893eead0 | 1663 | |
3e0dc6b0 BW |
1664 | if (!i915_enable_hangcheck) |
1665 | return; | |
1666 | ||
b4519513 CW |
1667 | memset(acthd, 0, sizeof(acthd)); |
1668 | idle = true; | |
1669 | for_each_ring(ring, dev_priv, i) { | |
1670 | idle &= i915_hangcheck_ring_idle(ring, &err); | |
1671 | acthd[i] = intel_ring_get_active_head(ring); | |
1672 | } | |
1673 | ||
893eead0 | 1674 | /* If all work is done then ACTHD clearly hasn't advanced. */ |
b4519513 | 1675 | if (idle) { |
d1e61e7f CW |
1676 | if (err) { |
1677 | if (i915_hangcheck_hung(dev)) | |
1678 | return; | |
1679 | ||
893eead0 | 1680 | goto repeat; |
d1e61e7f CW |
1681 | } |
1682 | ||
1683 | dev_priv->hangcheck_count = 0; | |
893eead0 CW |
1684 | return; |
1685 | } | |
b9201c14 | 1686 | |
a6c45cf0 | 1687 | if (INTEL_INFO(dev)->gen < 4) { |
cbb465e7 CW |
1688 | instdone = I915_READ(INSTDONE); |
1689 | instdone1 = 0; | |
1690 | } else { | |
cbb465e7 CW |
1691 | instdone = I915_READ(INSTDONE_I965); |
1692 | instdone1 = I915_READ(INSTDONE1); | |
1693 | } | |
b4519513 CW |
1694 | |
1695 | if (memcmp(dev_priv->last_acthd, acthd, sizeof(acthd)) == 0 && | |
cbb465e7 CW |
1696 | dev_priv->last_instdone == instdone && |
1697 | dev_priv->last_instdone1 == instdone1) { | |
d1e61e7f | 1698 | if (i915_hangcheck_hung(dev)) |
cbb465e7 | 1699 | return; |
cbb465e7 CW |
1700 | } else { |
1701 | dev_priv->hangcheck_count = 0; | |
1702 | ||
b4519513 | 1703 | memcpy(dev_priv->last_acthd, acthd, sizeof(acthd)); |
cbb465e7 CW |
1704 | dev_priv->last_instdone = instdone; |
1705 | dev_priv->last_instdone1 = instdone1; | |
1706 | } | |
f65d9421 | 1707 | |
893eead0 | 1708 | repeat: |
f65d9421 | 1709 | /* Reset timer case chip hangs without another request being added */ |
b3b079db CW |
1710 | mod_timer(&dev_priv->hangcheck_timer, |
1711 | jiffies + msecs_to_jiffies(DRM_I915_HANGCHECK_PERIOD)); | |
f65d9421 BG |
1712 | } |
1713 | ||
1da177e4 LT |
1714 | /* drm_dma.h hooks |
1715 | */ | |
f71d4af4 | 1716 | static void ironlake_irq_preinstall(struct drm_device *dev) |
036a4a7d ZW |
1717 | { |
1718 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1719 | ||
4697995b JB |
1720 | atomic_set(&dev_priv->irq_received, 0); |
1721 | ||
036a4a7d | 1722 | I915_WRITE(HWSTAM, 0xeffe); |
bdfcdb63 | 1723 | |
036a4a7d ZW |
1724 | /* XXX hotplug from PCH */ |
1725 | ||
1726 | I915_WRITE(DEIMR, 0xffffffff); | |
1727 | I915_WRITE(DEIER, 0x0); | |
3143a2bf | 1728 | POSTING_READ(DEIER); |
036a4a7d ZW |
1729 | |
1730 | /* and GT */ | |
1731 | I915_WRITE(GTIMR, 0xffffffff); | |
1732 | I915_WRITE(GTIER, 0x0); | |
3143a2bf | 1733 | POSTING_READ(GTIER); |
c650156a ZW |
1734 | |
1735 | /* south display irq */ | |
1736 | I915_WRITE(SDEIMR, 0xffffffff); | |
1737 | I915_WRITE(SDEIER, 0x0); | |
3143a2bf | 1738 | POSTING_READ(SDEIER); |
036a4a7d ZW |
1739 | } |
1740 | ||
7e231dbe JB |
1741 | static void valleyview_irq_preinstall(struct drm_device *dev) |
1742 | { | |
1743 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1744 | int pipe; | |
1745 | ||
1746 | atomic_set(&dev_priv->irq_received, 0); | |
1747 | ||
7e231dbe JB |
1748 | /* VLV magic */ |
1749 | I915_WRITE(VLV_IMR, 0); | |
1750 | I915_WRITE(RING_IMR(RENDER_RING_BASE), 0); | |
1751 | I915_WRITE(RING_IMR(GEN6_BSD_RING_BASE), 0); | |
1752 | I915_WRITE(RING_IMR(BLT_RING_BASE), 0); | |
1753 | ||
7e231dbe JB |
1754 | /* and GT */ |
1755 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
1756 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
1757 | I915_WRITE(GTIMR, 0xffffffff); | |
1758 | I915_WRITE(GTIER, 0x0); | |
1759 | POSTING_READ(GTIER); | |
1760 | ||
1761 | I915_WRITE(DPINVGTT, 0xff); | |
1762 | ||
1763 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
1764 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
1765 | for_each_pipe(pipe) | |
1766 | I915_WRITE(PIPESTAT(pipe), 0xffff); | |
1767 | I915_WRITE(VLV_IIR, 0xffffffff); | |
1768 | I915_WRITE(VLV_IMR, 0xffffffff); | |
1769 | I915_WRITE(VLV_IER, 0x0); | |
1770 | POSTING_READ(VLV_IER); | |
1771 | } | |
1772 | ||
7fe0b973 KP |
1773 | /* |
1774 | * Enable digital hotplug on the PCH, and configure the DP short pulse | |
1775 | * duration to 2ms (which is the minimum in the Display Port spec) | |
1776 | * | |
1777 | * This register is the same on all known PCH chips. | |
1778 | */ | |
1779 | ||
1780 | static void ironlake_enable_pch_hotplug(struct drm_device *dev) | |
1781 | { | |
1782 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1783 | u32 hotplug; | |
1784 | ||
1785 | hotplug = I915_READ(PCH_PORT_HOTPLUG); | |
1786 | hotplug &= ~(PORTD_PULSE_DURATION_MASK|PORTC_PULSE_DURATION_MASK|PORTB_PULSE_DURATION_MASK); | |
1787 | hotplug |= PORTD_HOTPLUG_ENABLE | PORTD_PULSE_DURATION_2ms; | |
1788 | hotplug |= PORTC_HOTPLUG_ENABLE | PORTC_PULSE_DURATION_2ms; | |
1789 | hotplug |= PORTB_HOTPLUG_ENABLE | PORTB_PULSE_DURATION_2ms; | |
1790 | I915_WRITE(PCH_PORT_HOTPLUG, hotplug); | |
1791 | } | |
1792 | ||
f71d4af4 | 1793 | static int ironlake_irq_postinstall(struct drm_device *dev) |
036a4a7d ZW |
1794 | { |
1795 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1796 | /* enable kind of interrupts always enabled */ | |
013d5aa2 JB |
1797 | u32 display_mask = DE_MASTER_IRQ_CONTROL | DE_GSE | DE_PCH_EVENT | |
1798 | DE_PLANEA_FLIP_DONE | DE_PLANEB_FLIP_DONE; | |
1ec14ad3 | 1799 | u32 render_irqs; |
2d7b8366 | 1800 | u32 hotplug_mask; |
036a4a7d | 1801 | |
1ec14ad3 | 1802 | dev_priv->irq_mask = ~display_mask; |
036a4a7d ZW |
1803 | |
1804 | /* should always can generate irq */ | |
1805 | I915_WRITE(DEIIR, I915_READ(DEIIR)); | |
1ec14ad3 CW |
1806 | I915_WRITE(DEIMR, dev_priv->irq_mask); |
1807 | I915_WRITE(DEIER, display_mask | DE_PIPEA_VBLANK | DE_PIPEB_VBLANK); | |
3143a2bf | 1808 | POSTING_READ(DEIER); |
036a4a7d | 1809 | |
1ec14ad3 | 1810 | dev_priv->gt_irq_mask = ~0; |
036a4a7d ZW |
1811 | |
1812 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
1ec14ad3 | 1813 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); |
881f47b6 | 1814 | |
1ec14ad3 CW |
1815 | if (IS_GEN6(dev)) |
1816 | render_irqs = | |
1817 | GT_USER_INTERRUPT | | |
e2a1e2f0 BW |
1818 | GEN6_BSD_USER_INTERRUPT | |
1819 | GEN6_BLITTER_USER_INTERRUPT; | |
1ec14ad3 CW |
1820 | else |
1821 | render_irqs = | |
88f23b8f | 1822 | GT_USER_INTERRUPT | |
c6df541c | 1823 | GT_PIPE_NOTIFY | |
1ec14ad3 CW |
1824 | GT_BSD_USER_INTERRUPT; |
1825 | I915_WRITE(GTIER, render_irqs); | |
3143a2bf | 1826 | POSTING_READ(GTIER); |
036a4a7d | 1827 | |
2d7b8366 | 1828 | if (HAS_PCH_CPT(dev)) { |
9035a97a CW |
1829 | hotplug_mask = (SDE_CRT_HOTPLUG_CPT | |
1830 | SDE_PORTB_HOTPLUG_CPT | | |
1831 | SDE_PORTC_HOTPLUG_CPT | | |
1832 | SDE_PORTD_HOTPLUG_CPT); | |
2d7b8366 | 1833 | } else { |
9035a97a CW |
1834 | hotplug_mask = (SDE_CRT_HOTPLUG | |
1835 | SDE_PORTB_HOTPLUG | | |
1836 | SDE_PORTC_HOTPLUG | | |
1837 | SDE_PORTD_HOTPLUG | | |
1838 | SDE_AUX_MASK); | |
2d7b8366 YL |
1839 | } |
1840 | ||
1ec14ad3 | 1841 | dev_priv->pch_irq_mask = ~hotplug_mask; |
c650156a ZW |
1842 | |
1843 | I915_WRITE(SDEIIR, I915_READ(SDEIIR)); | |
1ec14ad3 CW |
1844 | I915_WRITE(SDEIMR, dev_priv->pch_irq_mask); |
1845 | I915_WRITE(SDEIER, hotplug_mask); | |
3143a2bf | 1846 | POSTING_READ(SDEIER); |
c650156a | 1847 | |
7fe0b973 KP |
1848 | ironlake_enable_pch_hotplug(dev); |
1849 | ||
f97108d1 JB |
1850 | if (IS_IRONLAKE_M(dev)) { |
1851 | /* Clear & enable PCU event interrupts */ | |
1852 | I915_WRITE(DEIIR, DE_PCU_EVENT); | |
1853 | I915_WRITE(DEIER, I915_READ(DEIER) | DE_PCU_EVENT); | |
1854 | ironlake_enable_display_irq(dev_priv, DE_PCU_EVENT); | |
1855 | } | |
1856 | ||
036a4a7d ZW |
1857 | return 0; |
1858 | } | |
1859 | ||
f71d4af4 | 1860 | static int ivybridge_irq_postinstall(struct drm_device *dev) |
b1f14ad0 JB |
1861 | { |
1862 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1863 | /* enable kind of interrupts always enabled */ | |
b615b57a CW |
1864 | u32 display_mask = |
1865 | DE_MASTER_IRQ_CONTROL | DE_GSE_IVB | DE_PCH_EVENT_IVB | | |
1866 | DE_PLANEC_FLIP_DONE_IVB | | |
1867 | DE_PLANEB_FLIP_DONE_IVB | | |
1868 | DE_PLANEA_FLIP_DONE_IVB; | |
b1f14ad0 JB |
1869 | u32 render_irqs; |
1870 | u32 hotplug_mask; | |
1871 | ||
b1f14ad0 JB |
1872 | dev_priv->irq_mask = ~display_mask; |
1873 | ||
1874 | /* should always can generate irq */ | |
1875 | I915_WRITE(DEIIR, I915_READ(DEIIR)); | |
1876 | I915_WRITE(DEIMR, dev_priv->irq_mask); | |
b615b57a CW |
1877 | I915_WRITE(DEIER, |
1878 | display_mask | | |
1879 | DE_PIPEC_VBLANK_IVB | | |
1880 | DE_PIPEB_VBLANK_IVB | | |
1881 | DE_PIPEA_VBLANK_IVB); | |
b1f14ad0 JB |
1882 | POSTING_READ(DEIER); |
1883 | ||
15b9f80e | 1884 | dev_priv->gt_irq_mask = ~GT_GEN7_L3_PARITY_ERROR_INTERRUPT; |
b1f14ad0 JB |
1885 | |
1886 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
1887 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); | |
1888 | ||
e2a1e2f0 | 1889 | render_irqs = GT_USER_INTERRUPT | GEN6_BSD_USER_INTERRUPT | |
15b9f80e | 1890 | GEN6_BLITTER_USER_INTERRUPT | GT_GEN7_L3_PARITY_ERROR_INTERRUPT; |
b1f14ad0 JB |
1891 | I915_WRITE(GTIER, render_irqs); |
1892 | POSTING_READ(GTIER); | |
1893 | ||
1894 | hotplug_mask = (SDE_CRT_HOTPLUG_CPT | | |
1895 | SDE_PORTB_HOTPLUG_CPT | | |
1896 | SDE_PORTC_HOTPLUG_CPT | | |
1897 | SDE_PORTD_HOTPLUG_CPT); | |
1898 | dev_priv->pch_irq_mask = ~hotplug_mask; | |
1899 | ||
1900 | I915_WRITE(SDEIIR, I915_READ(SDEIIR)); | |
1901 | I915_WRITE(SDEIMR, dev_priv->pch_irq_mask); | |
1902 | I915_WRITE(SDEIER, hotplug_mask); | |
1903 | POSTING_READ(SDEIER); | |
1904 | ||
7fe0b973 KP |
1905 | ironlake_enable_pch_hotplug(dev); |
1906 | ||
b1f14ad0 JB |
1907 | return 0; |
1908 | } | |
1909 | ||
7e231dbe JB |
1910 | static int valleyview_irq_postinstall(struct drm_device *dev) |
1911 | { | |
1912 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
7e231dbe JB |
1913 | u32 enable_mask; |
1914 | u32 hotplug_en = I915_READ(PORT_HOTPLUG_EN); | |
31acc7f5 | 1915 | u32 pipestat_enable = PLANE_FLIP_DONE_INT_EN_VLV; |
7e231dbe JB |
1916 | u16 msid; |
1917 | ||
1918 | enable_mask = I915_DISPLAY_PORT_INTERRUPT; | |
31acc7f5 JB |
1919 | enable_mask |= I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | |
1920 | I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT | | |
1921 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
7e231dbe JB |
1922 | I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; |
1923 | ||
31acc7f5 JB |
1924 | /* |
1925 | *Leave vblank interrupts masked initially. enable/disable will | |
1926 | * toggle them based on usage. | |
1927 | */ | |
1928 | dev_priv->irq_mask = (~enable_mask) | | |
1929 | I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT | | |
1930 | I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; | |
7e231dbe | 1931 | |
7e231dbe JB |
1932 | dev_priv->pipestat[0] = 0; |
1933 | dev_priv->pipestat[1] = 0; | |
1934 | ||
7e231dbe JB |
1935 | /* Hack for broken MSIs on VLV */ |
1936 | pci_write_config_dword(dev_priv->dev->pdev, 0x94, 0xfee00000); | |
1937 | pci_read_config_word(dev->pdev, 0x98, &msid); | |
1938 | msid &= 0xff; /* mask out delivery bits */ | |
1939 | msid |= (1<<14); | |
1940 | pci_write_config_word(dev_priv->dev->pdev, 0x98, msid); | |
1941 | ||
1942 | I915_WRITE(VLV_IMR, dev_priv->irq_mask); | |
1943 | I915_WRITE(VLV_IER, enable_mask); | |
1944 | I915_WRITE(VLV_IIR, 0xffffffff); | |
1945 | I915_WRITE(PIPESTAT(0), 0xffff); | |
1946 | I915_WRITE(PIPESTAT(1), 0xffff); | |
1947 | POSTING_READ(VLV_IER); | |
1948 | ||
31acc7f5 JB |
1949 | i915_enable_pipestat(dev_priv, 0, pipestat_enable); |
1950 | i915_enable_pipestat(dev_priv, 1, pipestat_enable); | |
1951 | ||
7e231dbe JB |
1952 | I915_WRITE(VLV_IIR, 0xffffffff); |
1953 | I915_WRITE(VLV_IIR, 0xffffffff); | |
1954 | ||
31acc7f5 | 1955 | dev_priv->gt_irq_mask = ~0; |
7e231dbe JB |
1956 | |
1957 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
1958 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
31acc7f5 JB |
1959 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); |
1960 | I915_WRITE(GTIER, GT_GEN6_BLT_FLUSHDW_NOTIFY_INTERRUPT | | |
1961 | GT_GEN6_BLT_CS_ERROR_INTERRUPT | | |
1962 | GT_GEN6_BLT_USER_INTERRUPT | | |
1963 | GT_GEN6_BSD_USER_INTERRUPT | | |
1964 | GT_GEN6_BSD_CS_ERROR_INTERRUPT | | |
1965 | GT_GEN7_L3_PARITY_ERROR_INTERRUPT | | |
1966 | GT_PIPE_NOTIFY | | |
1967 | GT_RENDER_CS_ERROR_INTERRUPT | | |
1968 | GT_SYNC_STATUS | | |
1969 | GT_USER_INTERRUPT); | |
7e231dbe JB |
1970 | POSTING_READ(GTIER); |
1971 | ||
1972 | /* ack & enable invalid PTE error interrupts */ | |
1973 | #if 0 /* FIXME: add support to irq handler for checking these bits */ | |
1974 | I915_WRITE(DPINVGTT, DPINVGTT_STATUS_MASK); | |
1975 | I915_WRITE(DPINVGTT, DPINVGTT_EN_MASK); | |
1976 | #endif | |
1977 | ||
1978 | I915_WRITE(VLV_MASTER_IER, MASTER_INTERRUPT_ENABLE); | |
1979 | #if 0 /* FIXME: check register definitions; some have moved */ | |
1980 | /* Note HDMI and DP share bits */ | |
1981 | if (dev_priv->hotplug_supported_mask & HDMIB_HOTPLUG_INT_STATUS) | |
1982 | hotplug_en |= HDMIB_HOTPLUG_INT_EN; | |
1983 | if (dev_priv->hotplug_supported_mask & HDMIC_HOTPLUG_INT_STATUS) | |
1984 | hotplug_en |= HDMIC_HOTPLUG_INT_EN; | |
1985 | if (dev_priv->hotplug_supported_mask & HDMID_HOTPLUG_INT_STATUS) | |
1986 | hotplug_en |= HDMID_HOTPLUG_INT_EN; | |
1987 | if (dev_priv->hotplug_supported_mask & SDVOC_HOTPLUG_INT_STATUS) | |
1988 | hotplug_en |= SDVOC_HOTPLUG_INT_EN; | |
1989 | if (dev_priv->hotplug_supported_mask & SDVOB_HOTPLUG_INT_STATUS) | |
1990 | hotplug_en |= SDVOB_HOTPLUG_INT_EN; | |
1991 | if (dev_priv->hotplug_supported_mask & CRT_HOTPLUG_INT_STATUS) { | |
1992 | hotplug_en |= CRT_HOTPLUG_INT_EN; | |
1993 | hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50; | |
1994 | } | |
1995 | #endif | |
1996 | ||
1997 | I915_WRITE(PORT_HOTPLUG_EN, hotplug_en); | |
1998 | ||
1999 | return 0; | |
2000 | } | |
2001 | ||
7e231dbe JB |
2002 | static void valleyview_irq_uninstall(struct drm_device *dev) |
2003 | { | |
2004 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2005 | int pipe; | |
2006 | ||
2007 | if (!dev_priv) | |
2008 | return; | |
2009 | ||
7e231dbe JB |
2010 | for_each_pipe(pipe) |
2011 | I915_WRITE(PIPESTAT(pipe), 0xffff); | |
2012 | ||
2013 | I915_WRITE(HWSTAM, 0xffffffff); | |
2014 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
2015 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
2016 | for_each_pipe(pipe) | |
2017 | I915_WRITE(PIPESTAT(pipe), 0xffff); | |
2018 | I915_WRITE(VLV_IIR, 0xffffffff); | |
2019 | I915_WRITE(VLV_IMR, 0xffffffff); | |
2020 | I915_WRITE(VLV_IER, 0x0); | |
2021 | POSTING_READ(VLV_IER); | |
2022 | } | |
2023 | ||
f71d4af4 | 2024 | static void ironlake_irq_uninstall(struct drm_device *dev) |
036a4a7d ZW |
2025 | { |
2026 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
4697995b JB |
2027 | |
2028 | if (!dev_priv) | |
2029 | return; | |
2030 | ||
036a4a7d ZW |
2031 | I915_WRITE(HWSTAM, 0xffffffff); |
2032 | ||
2033 | I915_WRITE(DEIMR, 0xffffffff); | |
2034 | I915_WRITE(DEIER, 0x0); | |
2035 | I915_WRITE(DEIIR, I915_READ(DEIIR)); | |
2036 | ||
2037 | I915_WRITE(GTIMR, 0xffffffff); | |
2038 | I915_WRITE(GTIER, 0x0); | |
2039 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
192aac1f KP |
2040 | |
2041 | I915_WRITE(SDEIMR, 0xffffffff); | |
2042 | I915_WRITE(SDEIER, 0x0); | |
2043 | I915_WRITE(SDEIIR, I915_READ(SDEIIR)); | |
036a4a7d ZW |
2044 | } |
2045 | ||
a266c7d5 | 2046 | static void i8xx_irq_preinstall(struct drm_device * dev) |
1da177e4 LT |
2047 | { |
2048 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
9db4a9c7 | 2049 | int pipe; |
91e3738e | 2050 | |
a266c7d5 | 2051 | atomic_set(&dev_priv->irq_received, 0); |
5ca58282 | 2052 | |
9db4a9c7 JB |
2053 | for_each_pipe(pipe) |
2054 | I915_WRITE(PIPESTAT(pipe), 0); | |
a266c7d5 CW |
2055 | I915_WRITE16(IMR, 0xffff); |
2056 | I915_WRITE16(IER, 0x0); | |
2057 | POSTING_READ16(IER); | |
c2798b19 CW |
2058 | } |
2059 | ||
2060 | static int i8xx_irq_postinstall(struct drm_device *dev) | |
2061 | { | |
2062 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2063 | ||
c2798b19 CW |
2064 | dev_priv->pipestat[0] = 0; |
2065 | dev_priv->pipestat[1] = 0; | |
2066 | ||
2067 | I915_WRITE16(EMR, | |
2068 | ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH)); | |
2069 | ||
2070 | /* Unmask the interrupts that we always want on. */ | |
2071 | dev_priv->irq_mask = | |
2072 | ~(I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
2073 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
2074 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
2075 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | | |
2076 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
2077 | I915_WRITE16(IMR, dev_priv->irq_mask); | |
2078 | ||
2079 | I915_WRITE16(IER, | |
2080 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
2081 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
2082 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT | | |
2083 | I915_USER_INTERRUPT); | |
2084 | POSTING_READ16(IER); | |
2085 | ||
2086 | return 0; | |
2087 | } | |
2088 | ||
2089 | static irqreturn_t i8xx_irq_handler(DRM_IRQ_ARGS) | |
2090 | { | |
2091 | struct drm_device *dev = (struct drm_device *) arg; | |
2092 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
c2798b19 CW |
2093 | u16 iir, new_iir; |
2094 | u32 pipe_stats[2]; | |
2095 | unsigned long irqflags; | |
2096 | int irq_received; | |
2097 | int pipe; | |
2098 | u16 flip_mask = | |
2099 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
2100 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; | |
2101 | ||
2102 | atomic_inc(&dev_priv->irq_received); | |
2103 | ||
2104 | iir = I915_READ16(IIR); | |
2105 | if (iir == 0) | |
2106 | return IRQ_NONE; | |
2107 | ||
2108 | while (iir & ~flip_mask) { | |
2109 | /* Can't rely on pipestat interrupt bit in iir as it might | |
2110 | * have been cleared after the pipestat interrupt was received. | |
2111 | * It doesn't set the bit in iir again, but it still produces | |
2112 | * interrupts (for non-MSI). | |
2113 | */ | |
2114 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
2115 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) | |
2116 | i915_handle_error(dev, false); | |
2117 | ||
2118 | for_each_pipe(pipe) { | |
2119 | int reg = PIPESTAT(pipe); | |
2120 | pipe_stats[pipe] = I915_READ(reg); | |
2121 | ||
2122 | /* | |
2123 | * Clear the PIPE*STAT regs before the IIR | |
2124 | */ | |
2125 | if (pipe_stats[pipe] & 0x8000ffff) { | |
2126 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) | |
2127 | DRM_DEBUG_DRIVER("pipe %c underrun\n", | |
2128 | pipe_name(pipe)); | |
2129 | I915_WRITE(reg, pipe_stats[pipe]); | |
2130 | irq_received = 1; | |
2131 | } | |
2132 | } | |
2133 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
2134 | ||
2135 | I915_WRITE16(IIR, iir & ~flip_mask); | |
2136 | new_iir = I915_READ16(IIR); /* Flush posted writes */ | |
2137 | ||
d05c617e | 2138 | i915_update_dri1_breadcrumb(dev); |
c2798b19 CW |
2139 | |
2140 | if (iir & I915_USER_INTERRUPT) | |
2141 | notify_ring(dev, &dev_priv->ring[RCS]); | |
2142 | ||
2143 | if (pipe_stats[0] & PIPE_VBLANK_INTERRUPT_STATUS && | |
2144 | drm_handle_vblank(dev, 0)) { | |
2145 | if (iir & I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT) { | |
2146 | intel_prepare_page_flip(dev, 0); | |
2147 | intel_finish_page_flip(dev, 0); | |
2148 | flip_mask &= ~I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT; | |
2149 | } | |
2150 | } | |
2151 | ||
2152 | if (pipe_stats[1] & PIPE_VBLANK_INTERRUPT_STATUS && | |
2153 | drm_handle_vblank(dev, 1)) { | |
2154 | if (iir & I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT) { | |
2155 | intel_prepare_page_flip(dev, 1); | |
2156 | intel_finish_page_flip(dev, 1); | |
2157 | flip_mask &= ~I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; | |
2158 | } | |
2159 | } | |
2160 | ||
2161 | iir = new_iir; | |
2162 | } | |
2163 | ||
2164 | return IRQ_HANDLED; | |
2165 | } | |
2166 | ||
2167 | static void i8xx_irq_uninstall(struct drm_device * dev) | |
2168 | { | |
2169 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2170 | int pipe; | |
2171 | ||
c2798b19 CW |
2172 | for_each_pipe(pipe) { |
2173 | /* Clear enable bits; then clear status bits */ | |
2174 | I915_WRITE(PIPESTAT(pipe), 0); | |
2175 | I915_WRITE(PIPESTAT(pipe), I915_READ(PIPESTAT(pipe))); | |
2176 | } | |
2177 | I915_WRITE16(IMR, 0xffff); | |
2178 | I915_WRITE16(IER, 0x0); | |
2179 | I915_WRITE16(IIR, I915_READ16(IIR)); | |
2180 | } | |
2181 | ||
a266c7d5 CW |
2182 | static void i915_irq_preinstall(struct drm_device * dev) |
2183 | { | |
2184 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2185 | int pipe; | |
2186 | ||
2187 | atomic_set(&dev_priv->irq_received, 0); | |
2188 | ||
2189 | if (I915_HAS_HOTPLUG(dev)) { | |
2190 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
2191 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
2192 | } | |
2193 | ||
00d98ebd | 2194 | I915_WRITE16(HWSTAM, 0xeffe); |
a266c7d5 CW |
2195 | for_each_pipe(pipe) |
2196 | I915_WRITE(PIPESTAT(pipe), 0); | |
2197 | I915_WRITE(IMR, 0xffffffff); | |
2198 | I915_WRITE(IER, 0x0); | |
2199 | POSTING_READ(IER); | |
2200 | } | |
2201 | ||
2202 | static int i915_irq_postinstall(struct drm_device *dev) | |
2203 | { | |
2204 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
38bde180 | 2205 | u32 enable_mask; |
a266c7d5 | 2206 | |
a266c7d5 CW |
2207 | dev_priv->pipestat[0] = 0; |
2208 | dev_priv->pipestat[1] = 0; | |
2209 | ||
38bde180 CW |
2210 | I915_WRITE(EMR, ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH)); |
2211 | ||
2212 | /* Unmask the interrupts that we always want on. */ | |
2213 | dev_priv->irq_mask = | |
2214 | ~(I915_ASLE_INTERRUPT | | |
2215 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
2216 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
2217 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
2218 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | | |
2219 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
2220 | ||
2221 | enable_mask = | |
2222 | I915_ASLE_INTERRUPT | | |
2223 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
2224 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
2225 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT | | |
2226 | I915_USER_INTERRUPT; | |
2227 | ||
a266c7d5 CW |
2228 | if (I915_HAS_HOTPLUG(dev)) { |
2229 | /* Enable in IER... */ | |
2230 | enable_mask |= I915_DISPLAY_PORT_INTERRUPT; | |
2231 | /* and unmask in IMR */ | |
2232 | dev_priv->irq_mask &= ~I915_DISPLAY_PORT_INTERRUPT; | |
2233 | } | |
2234 | ||
a266c7d5 CW |
2235 | I915_WRITE(IMR, dev_priv->irq_mask); |
2236 | I915_WRITE(IER, enable_mask); | |
2237 | POSTING_READ(IER); | |
2238 | ||
2239 | if (I915_HAS_HOTPLUG(dev)) { | |
2240 | u32 hotplug_en = I915_READ(PORT_HOTPLUG_EN); | |
2241 | ||
a266c7d5 CW |
2242 | if (dev_priv->hotplug_supported_mask & HDMIB_HOTPLUG_INT_STATUS) |
2243 | hotplug_en |= HDMIB_HOTPLUG_INT_EN; | |
2244 | if (dev_priv->hotplug_supported_mask & HDMIC_HOTPLUG_INT_STATUS) | |
2245 | hotplug_en |= HDMIC_HOTPLUG_INT_EN; | |
2246 | if (dev_priv->hotplug_supported_mask & HDMID_HOTPLUG_INT_STATUS) | |
2247 | hotplug_en |= HDMID_HOTPLUG_INT_EN; | |
084b612e | 2248 | if (dev_priv->hotplug_supported_mask & SDVOC_HOTPLUG_INT_STATUS_I915) |
a266c7d5 | 2249 | hotplug_en |= SDVOC_HOTPLUG_INT_EN; |
084b612e | 2250 | if (dev_priv->hotplug_supported_mask & SDVOB_HOTPLUG_INT_STATUS_I915) |
a266c7d5 CW |
2251 | hotplug_en |= SDVOB_HOTPLUG_INT_EN; |
2252 | if (dev_priv->hotplug_supported_mask & CRT_HOTPLUG_INT_STATUS) { | |
2253 | hotplug_en |= CRT_HOTPLUG_INT_EN; | |
a266c7d5 CW |
2254 | hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50; |
2255 | } | |
2256 | ||
2257 | /* Ignore TV since it's buggy */ | |
2258 | ||
2259 | I915_WRITE(PORT_HOTPLUG_EN, hotplug_en); | |
2260 | } | |
2261 | ||
2262 | intel_opregion_enable_asle(dev); | |
2263 | ||
2264 | return 0; | |
2265 | } | |
2266 | ||
2267 | static irqreturn_t i915_irq_handler(DRM_IRQ_ARGS) | |
2268 | { | |
2269 | struct drm_device *dev = (struct drm_device *) arg; | |
2270 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
8291ee90 | 2271 | u32 iir, new_iir, pipe_stats[I915_MAX_PIPES]; |
a266c7d5 | 2272 | unsigned long irqflags; |
38bde180 CW |
2273 | u32 flip_mask = |
2274 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
2275 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; | |
2276 | u32 flip[2] = { | |
2277 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT, | |
2278 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | |
2279 | }; | |
2280 | int pipe, ret = IRQ_NONE; | |
a266c7d5 CW |
2281 | |
2282 | atomic_inc(&dev_priv->irq_received); | |
2283 | ||
2284 | iir = I915_READ(IIR); | |
38bde180 CW |
2285 | do { |
2286 | bool irq_received = (iir & ~flip_mask) != 0; | |
8291ee90 | 2287 | bool blc_event = false; |
a266c7d5 CW |
2288 | |
2289 | /* Can't rely on pipestat interrupt bit in iir as it might | |
2290 | * have been cleared after the pipestat interrupt was received. | |
2291 | * It doesn't set the bit in iir again, but it still produces | |
2292 | * interrupts (for non-MSI). | |
2293 | */ | |
2294 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
2295 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) | |
2296 | i915_handle_error(dev, false); | |
2297 | ||
2298 | for_each_pipe(pipe) { | |
2299 | int reg = PIPESTAT(pipe); | |
2300 | pipe_stats[pipe] = I915_READ(reg); | |
2301 | ||
38bde180 | 2302 | /* Clear the PIPE*STAT regs before the IIR */ |
a266c7d5 CW |
2303 | if (pipe_stats[pipe] & 0x8000ffff) { |
2304 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) | |
2305 | DRM_DEBUG_DRIVER("pipe %c underrun\n", | |
2306 | pipe_name(pipe)); | |
2307 | I915_WRITE(reg, pipe_stats[pipe]); | |
38bde180 | 2308 | irq_received = true; |
a266c7d5 CW |
2309 | } |
2310 | } | |
2311 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
2312 | ||
2313 | if (!irq_received) | |
2314 | break; | |
2315 | ||
a266c7d5 CW |
2316 | /* Consume port. Then clear IIR or we'll miss events */ |
2317 | if ((I915_HAS_HOTPLUG(dev)) && | |
2318 | (iir & I915_DISPLAY_PORT_INTERRUPT)) { | |
2319 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); | |
2320 | ||
2321 | DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", | |
2322 | hotplug_status); | |
2323 | if (hotplug_status & dev_priv->hotplug_supported_mask) | |
2324 | queue_work(dev_priv->wq, | |
2325 | &dev_priv->hotplug_work); | |
2326 | ||
2327 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); | |
38bde180 | 2328 | POSTING_READ(PORT_HOTPLUG_STAT); |
a266c7d5 CW |
2329 | } |
2330 | ||
38bde180 | 2331 | I915_WRITE(IIR, iir & ~flip_mask); |
a266c7d5 CW |
2332 | new_iir = I915_READ(IIR); /* Flush posted writes */ |
2333 | ||
a266c7d5 CW |
2334 | if (iir & I915_USER_INTERRUPT) |
2335 | notify_ring(dev, &dev_priv->ring[RCS]); | |
a266c7d5 | 2336 | |
a266c7d5 | 2337 | for_each_pipe(pipe) { |
38bde180 CW |
2338 | int plane = pipe; |
2339 | if (IS_MOBILE(dev)) | |
2340 | plane = !plane; | |
8291ee90 | 2341 | if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS && |
a266c7d5 | 2342 | drm_handle_vblank(dev, pipe)) { |
38bde180 CW |
2343 | if (iir & flip[plane]) { |
2344 | intel_prepare_page_flip(dev, plane); | |
2345 | intel_finish_page_flip(dev, pipe); | |
2346 | flip_mask &= ~flip[plane]; | |
2347 | } | |
a266c7d5 CW |
2348 | } |
2349 | ||
2350 | if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) | |
2351 | blc_event = true; | |
2352 | } | |
2353 | ||
a266c7d5 CW |
2354 | if (blc_event || (iir & I915_ASLE_INTERRUPT)) |
2355 | intel_opregion_asle_intr(dev); | |
2356 | ||
2357 | /* With MSI, interrupts are only generated when iir | |
2358 | * transitions from zero to nonzero. If another bit got | |
2359 | * set while we were handling the existing iir bits, then | |
2360 | * we would never get another interrupt. | |
2361 | * | |
2362 | * This is fine on non-MSI as well, as if we hit this path | |
2363 | * we avoid exiting the interrupt handler only to generate | |
2364 | * another one. | |
2365 | * | |
2366 | * Note that for MSI this could cause a stray interrupt report | |
2367 | * if an interrupt landed in the time between writing IIR and | |
2368 | * the posting read. This should be rare enough to never | |
2369 | * trigger the 99% of 100,000 interrupts test for disabling | |
2370 | * stray interrupts. | |
2371 | */ | |
38bde180 | 2372 | ret = IRQ_HANDLED; |
a266c7d5 | 2373 | iir = new_iir; |
38bde180 | 2374 | } while (iir & ~flip_mask); |
a266c7d5 | 2375 | |
d05c617e | 2376 | i915_update_dri1_breadcrumb(dev); |
8291ee90 | 2377 | |
a266c7d5 CW |
2378 | return ret; |
2379 | } | |
2380 | ||
2381 | static void i915_irq_uninstall(struct drm_device * dev) | |
2382 | { | |
2383 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2384 | int pipe; | |
2385 | ||
a266c7d5 CW |
2386 | if (I915_HAS_HOTPLUG(dev)) { |
2387 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
2388 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
2389 | } | |
2390 | ||
00d98ebd | 2391 | I915_WRITE16(HWSTAM, 0xffff); |
55b39755 CW |
2392 | for_each_pipe(pipe) { |
2393 | /* Clear enable bits; then clear status bits */ | |
a266c7d5 | 2394 | I915_WRITE(PIPESTAT(pipe), 0); |
55b39755 CW |
2395 | I915_WRITE(PIPESTAT(pipe), I915_READ(PIPESTAT(pipe))); |
2396 | } | |
a266c7d5 CW |
2397 | I915_WRITE(IMR, 0xffffffff); |
2398 | I915_WRITE(IER, 0x0); | |
2399 | ||
a266c7d5 CW |
2400 | I915_WRITE(IIR, I915_READ(IIR)); |
2401 | } | |
2402 | ||
2403 | static void i965_irq_preinstall(struct drm_device * dev) | |
2404 | { | |
2405 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2406 | int pipe; | |
2407 | ||
2408 | atomic_set(&dev_priv->irq_received, 0); | |
2409 | ||
adca4730 CW |
2410 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
2411 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
a266c7d5 CW |
2412 | |
2413 | I915_WRITE(HWSTAM, 0xeffe); | |
2414 | for_each_pipe(pipe) | |
2415 | I915_WRITE(PIPESTAT(pipe), 0); | |
2416 | I915_WRITE(IMR, 0xffffffff); | |
2417 | I915_WRITE(IER, 0x0); | |
2418 | POSTING_READ(IER); | |
2419 | } | |
2420 | ||
2421 | static int i965_irq_postinstall(struct drm_device *dev) | |
2422 | { | |
2423 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
adca4730 | 2424 | u32 hotplug_en; |
bbba0a97 | 2425 | u32 enable_mask; |
a266c7d5 CW |
2426 | u32 error_mask; |
2427 | ||
a266c7d5 | 2428 | /* Unmask the interrupts that we always want on. */ |
bbba0a97 | 2429 | dev_priv->irq_mask = ~(I915_ASLE_INTERRUPT | |
adca4730 | 2430 | I915_DISPLAY_PORT_INTERRUPT | |
bbba0a97 CW |
2431 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | |
2432 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
2433 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
2434 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | | |
2435 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
2436 | ||
2437 | enable_mask = ~dev_priv->irq_mask; | |
2438 | enable_mask |= I915_USER_INTERRUPT; | |
2439 | ||
2440 | if (IS_G4X(dev)) | |
2441 | enable_mask |= I915_BSD_USER_INTERRUPT; | |
a266c7d5 CW |
2442 | |
2443 | dev_priv->pipestat[0] = 0; | |
2444 | dev_priv->pipestat[1] = 0; | |
2445 | ||
a266c7d5 CW |
2446 | /* |
2447 | * Enable some error detection, note the instruction error mask | |
2448 | * bit is reserved, so we leave it masked. | |
2449 | */ | |
2450 | if (IS_G4X(dev)) { | |
2451 | error_mask = ~(GM45_ERROR_PAGE_TABLE | | |
2452 | GM45_ERROR_MEM_PRIV | | |
2453 | GM45_ERROR_CP_PRIV | | |
2454 | I915_ERROR_MEMORY_REFRESH); | |
2455 | } else { | |
2456 | error_mask = ~(I915_ERROR_PAGE_TABLE | | |
2457 | I915_ERROR_MEMORY_REFRESH); | |
2458 | } | |
2459 | I915_WRITE(EMR, error_mask); | |
2460 | ||
2461 | I915_WRITE(IMR, dev_priv->irq_mask); | |
2462 | I915_WRITE(IER, enable_mask); | |
2463 | POSTING_READ(IER); | |
2464 | ||
adca4730 CW |
2465 | /* Note HDMI and DP share hotplug bits */ |
2466 | hotplug_en = 0; | |
2467 | if (dev_priv->hotplug_supported_mask & HDMIB_HOTPLUG_INT_STATUS) | |
2468 | hotplug_en |= HDMIB_HOTPLUG_INT_EN; | |
2469 | if (dev_priv->hotplug_supported_mask & HDMIC_HOTPLUG_INT_STATUS) | |
2470 | hotplug_en |= HDMIC_HOTPLUG_INT_EN; | |
2471 | if (dev_priv->hotplug_supported_mask & HDMID_HOTPLUG_INT_STATUS) | |
2472 | hotplug_en |= HDMID_HOTPLUG_INT_EN; | |
084b612e CW |
2473 | if (IS_G4X(dev)) { |
2474 | if (dev_priv->hotplug_supported_mask & SDVOC_HOTPLUG_INT_STATUS_G4X) | |
2475 | hotplug_en |= SDVOC_HOTPLUG_INT_EN; | |
2476 | if (dev_priv->hotplug_supported_mask & SDVOB_HOTPLUG_INT_STATUS_G4X) | |
2477 | hotplug_en |= SDVOB_HOTPLUG_INT_EN; | |
2478 | } else { | |
2479 | if (dev_priv->hotplug_supported_mask & SDVOC_HOTPLUG_INT_STATUS_I965) | |
2480 | hotplug_en |= SDVOC_HOTPLUG_INT_EN; | |
2481 | if (dev_priv->hotplug_supported_mask & SDVOB_HOTPLUG_INT_STATUS_I965) | |
2482 | hotplug_en |= SDVOB_HOTPLUG_INT_EN; | |
2483 | } | |
adca4730 CW |
2484 | if (dev_priv->hotplug_supported_mask & CRT_HOTPLUG_INT_STATUS) { |
2485 | hotplug_en |= CRT_HOTPLUG_INT_EN; | |
a266c7d5 | 2486 | |
adca4730 CW |
2487 | /* Programming the CRT detection parameters tends |
2488 | to generate a spurious hotplug event about three | |
2489 | seconds later. So just do it once. | |
2490 | */ | |
2491 | if (IS_G4X(dev)) | |
2492 | hotplug_en |= CRT_HOTPLUG_ACTIVATION_PERIOD_64; | |
2493 | hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50; | |
2494 | } | |
a266c7d5 | 2495 | |
adca4730 | 2496 | /* Ignore TV since it's buggy */ |
a266c7d5 | 2497 | |
adca4730 | 2498 | I915_WRITE(PORT_HOTPLUG_EN, hotplug_en); |
a266c7d5 CW |
2499 | |
2500 | intel_opregion_enable_asle(dev); | |
2501 | ||
2502 | return 0; | |
2503 | } | |
2504 | ||
2505 | static irqreturn_t i965_irq_handler(DRM_IRQ_ARGS) | |
2506 | { | |
2507 | struct drm_device *dev = (struct drm_device *) arg; | |
2508 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
a266c7d5 CW |
2509 | u32 iir, new_iir; |
2510 | u32 pipe_stats[I915_MAX_PIPES]; | |
a266c7d5 CW |
2511 | unsigned long irqflags; |
2512 | int irq_received; | |
2513 | int ret = IRQ_NONE, pipe; | |
a266c7d5 CW |
2514 | |
2515 | atomic_inc(&dev_priv->irq_received); | |
2516 | ||
2517 | iir = I915_READ(IIR); | |
2518 | ||
a266c7d5 | 2519 | for (;;) { |
2c8ba29f CW |
2520 | bool blc_event = false; |
2521 | ||
a266c7d5 CW |
2522 | irq_received = iir != 0; |
2523 | ||
2524 | /* Can't rely on pipestat interrupt bit in iir as it might | |
2525 | * have been cleared after the pipestat interrupt was received. | |
2526 | * It doesn't set the bit in iir again, but it still produces | |
2527 | * interrupts (for non-MSI). | |
2528 | */ | |
2529 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
2530 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) | |
2531 | i915_handle_error(dev, false); | |
2532 | ||
2533 | for_each_pipe(pipe) { | |
2534 | int reg = PIPESTAT(pipe); | |
2535 | pipe_stats[pipe] = I915_READ(reg); | |
2536 | ||
2537 | /* | |
2538 | * Clear the PIPE*STAT regs before the IIR | |
2539 | */ | |
2540 | if (pipe_stats[pipe] & 0x8000ffff) { | |
2541 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) | |
2542 | DRM_DEBUG_DRIVER("pipe %c underrun\n", | |
2543 | pipe_name(pipe)); | |
2544 | I915_WRITE(reg, pipe_stats[pipe]); | |
2545 | irq_received = 1; | |
2546 | } | |
2547 | } | |
2548 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
2549 | ||
2550 | if (!irq_received) | |
2551 | break; | |
2552 | ||
2553 | ret = IRQ_HANDLED; | |
2554 | ||
2555 | /* Consume port. Then clear IIR or we'll miss events */ | |
adca4730 | 2556 | if (iir & I915_DISPLAY_PORT_INTERRUPT) { |
a266c7d5 CW |
2557 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); |
2558 | ||
2559 | DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", | |
2560 | hotplug_status); | |
2561 | if (hotplug_status & dev_priv->hotplug_supported_mask) | |
2562 | queue_work(dev_priv->wq, | |
2563 | &dev_priv->hotplug_work); | |
2564 | ||
2565 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); | |
2566 | I915_READ(PORT_HOTPLUG_STAT); | |
2567 | } | |
2568 | ||
2569 | I915_WRITE(IIR, iir); | |
2570 | new_iir = I915_READ(IIR); /* Flush posted writes */ | |
2571 | ||
a266c7d5 CW |
2572 | if (iir & I915_USER_INTERRUPT) |
2573 | notify_ring(dev, &dev_priv->ring[RCS]); | |
2574 | if (iir & I915_BSD_USER_INTERRUPT) | |
2575 | notify_ring(dev, &dev_priv->ring[VCS]); | |
2576 | ||
4f7d1e79 | 2577 | if (iir & I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT) |
a266c7d5 | 2578 | intel_prepare_page_flip(dev, 0); |
a266c7d5 | 2579 | |
4f7d1e79 | 2580 | if (iir & I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT) |
a266c7d5 | 2581 | intel_prepare_page_flip(dev, 1); |
a266c7d5 CW |
2582 | |
2583 | for_each_pipe(pipe) { | |
2c8ba29f | 2584 | if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS && |
a266c7d5 | 2585 | drm_handle_vblank(dev, pipe)) { |
4f7d1e79 CW |
2586 | i915_pageflip_stall_check(dev, pipe); |
2587 | intel_finish_page_flip(dev, pipe); | |
a266c7d5 CW |
2588 | } |
2589 | ||
2590 | if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) | |
2591 | blc_event = true; | |
2592 | } | |
2593 | ||
2594 | ||
2595 | if (blc_event || (iir & I915_ASLE_INTERRUPT)) | |
2596 | intel_opregion_asle_intr(dev); | |
2597 | ||
2598 | /* With MSI, interrupts are only generated when iir | |
2599 | * transitions from zero to nonzero. If another bit got | |
2600 | * set while we were handling the existing iir bits, then | |
2601 | * we would never get another interrupt. | |
2602 | * | |
2603 | * This is fine on non-MSI as well, as if we hit this path | |
2604 | * we avoid exiting the interrupt handler only to generate | |
2605 | * another one. | |
2606 | * | |
2607 | * Note that for MSI this could cause a stray interrupt report | |
2608 | * if an interrupt landed in the time between writing IIR and | |
2609 | * the posting read. This should be rare enough to never | |
2610 | * trigger the 99% of 100,000 interrupts test for disabling | |
2611 | * stray interrupts. | |
2612 | */ | |
2613 | iir = new_iir; | |
2614 | } | |
2615 | ||
d05c617e | 2616 | i915_update_dri1_breadcrumb(dev); |
2c8ba29f | 2617 | |
a266c7d5 CW |
2618 | return ret; |
2619 | } | |
2620 | ||
2621 | static void i965_irq_uninstall(struct drm_device * dev) | |
2622 | { | |
2623 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2624 | int pipe; | |
2625 | ||
2626 | if (!dev_priv) | |
2627 | return; | |
2628 | ||
adca4730 CW |
2629 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
2630 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
a266c7d5 CW |
2631 | |
2632 | I915_WRITE(HWSTAM, 0xffffffff); | |
2633 | for_each_pipe(pipe) | |
2634 | I915_WRITE(PIPESTAT(pipe), 0); | |
2635 | I915_WRITE(IMR, 0xffffffff); | |
2636 | I915_WRITE(IER, 0x0); | |
2637 | ||
2638 | for_each_pipe(pipe) | |
2639 | I915_WRITE(PIPESTAT(pipe), | |
2640 | I915_READ(PIPESTAT(pipe)) & 0x8000ffff); | |
2641 | I915_WRITE(IIR, I915_READ(IIR)); | |
2642 | } | |
2643 | ||
f71d4af4 JB |
2644 | void intel_irq_init(struct drm_device *dev) |
2645 | { | |
8b2e326d CW |
2646 | struct drm_i915_private *dev_priv = dev->dev_private; |
2647 | ||
2648 | INIT_WORK(&dev_priv->hotplug_work, i915_hotplug_work_func); | |
2649 | INIT_WORK(&dev_priv->error_work, i915_error_work_func); | |
2650 | INIT_WORK(&dev_priv->rps_work, gen6_pm_rps_work); | |
98fd81cd | 2651 | INIT_WORK(&dev_priv->parity_error_work, ivybridge_parity_work); |
8b2e326d | 2652 | |
f71d4af4 JB |
2653 | dev->driver->get_vblank_counter = i915_get_vblank_counter; |
2654 | dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */ | |
7d4e146f | 2655 | if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) { |
f71d4af4 JB |
2656 | dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */ |
2657 | dev->driver->get_vblank_counter = gm45_get_vblank_counter; | |
2658 | } | |
2659 | ||
c3613de9 KP |
2660 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
2661 | dev->driver->get_vblank_timestamp = i915_get_vblank_timestamp; | |
2662 | else | |
2663 | dev->driver->get_vblank_timestamp = NULL; | |
f71d4af4 JB |
2664 | dev->driver->get_scanout_position = i915_get_crtc_scanoutpos; |
2665 | ||
7e231dbe JB |
2666 | if (IS_VALLEYVIEW(dev)) { |
2667 | dev->driver->irq_handler = valleyview_irq_handler; | |
2668 | dev->driver->irq_preinstall = valleyview_irq_preinstall; | |
2669 | dev->driver->irq_postinstall = valleyview_irq_postinstall; | |
2670 | dev->driver->irq_uninstall = valleyview_irq_uninstall; | |
2671 | dev->driver->enable_vblank = valleyview_enable_vblank; | |
2672 | dev->driver->disable_vblank = valleyview_disable_vblank; | |
2673 | } else if (IS_IVYBRIDGE(dev)) { | |
f71d4af4 JB |
2674 | /* Share pre & uninstall handlers with ILK/SNB */ |
2675 | dev->driver->irq_handler = ivybridge_irq_handler; | |
2676 | dev->driver->irq_preinstall = ironlake_irq_preinstall; | |
2677 | dev->driver->irq_postinstall = ivybridge_irq_postinstall; | |
2678 | dev->driver->irq_uninstall = ironlake_irq_uninstall; | |
2679 | dev->driver->enable_vblank = ivybridge_enable_vblank; | |
2680 | dev->driver->disable_vblank = ivybridge_disable_vblank; | |
7d4e146f ED |
2681 | } else if (IS_HASWELL(dev)) { |
2682 | /* Share interrupts handling with IVB */ | |
2683 | dev->driver->irq_handler = ivybridge_irq_handler; | |
2684 | dev->driver->irq_preinstall = ironlake_irq_preinstall; | |
2685 | dev->driver->irq_postinstall = ivybridge_irq_postinstall; | |
2686 | dev->driver->irq_uninstall = ironlake_irq_uninstall; | |
2687 | dev->driver->enable_vblank = ivybridge_enable_vblank; | |
2688 | dev->driver->disable_vblank = ivybridge_disable_vblank; | |
f71d4af4 JB |
2689 | } else if (HAS_PCH_SPLIT(dev)) { |
2690 | dev->driver->irq_handler = ironlake_irq_handler; | |
2691 | dev->driver->irq_preinstall = ironlake_irq_preinstall; | |
2692 | dev->driver->irq_postinstall = ironlake_irq_postinstall; | |
2693 | dev->driver->irq_uninstall = ironlake_irq_uninstall; | |
2694 | dev->driver->enable_vblank = ironlake_enable_vblank; | |
2695 | dev->driver->disable_vblank = ironlake_disable_vblank; | |
2696 | } else { | |
c2798b19 CW |
2697 | if (INTEL_INFO(dev)->gen == 2) { |
2698 | dev->driver->irq_preinstall = i8xx_irq_preinstall; | |
2699 | dev->driver->irq_postinstall = i8xx_irq_postinstall; | |
2700 | dev->driver->irq_handler = i8xx_irq_handler; | |
2701 | dev->driver->irq_uninstall = i8xx_irq_uninstall; | |
a266c7d5 CW |
2702 | } else if (INTEL_INFO(dev)->gen == 3) { |
2703 | dev->driver->irq_preinstall = i915_irq_preinstall; | |
2704 | dev->driver->irq_postinstall = i915_irq_postinstall; | |
2705 | dev->driver->irq_uninstall = i915_irq_uninstall; | |
2706 | dev->driver->irq_handler = i915_irq_handler; | |
c2798b19 | 2707 | } else { |
a266c7d5 CW |
2708 | dev->driver->irq_preinstall = i965_irq_preinstall; |
2709 | dev->driver->irq_postinstall = i965_irq_postinstall; | |
2710 | dev->driver->irq_uninstall = i965_irq_uninstall; | |
2711 | dev->driver->irq_handler = i965_irq_handler; | |
c2798b19 | 2712 | } |
f71d4af4 JB |
2713 | dev->driver->enable_vblank = i915_enable_vblank; |
2714 | dev->driver->disable_vblank = i915_disable_vblank; | |
2715 | } | |
2716 | } |