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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); | |
3b8d8d91 | 353 | u8 new_delay = dev_priv->cur_delay; |
4912d041 BW |
354 | u32 pm_iir, pm_imr; |
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 | |
3b8d8d91 JB |
363 | if (!pm_iir) |
364 | return; | |
365 | ||
4912d041 | 366 | mutex_lock(&dev_priv->dev->struct_mutex); |
3b8d8d91 JB |
367 | if (pm_iir & GEN6_PM_RP_UP_THRESHOLD) { |
368 | if (dev_priv->cur_delay != dev_priv->max_delay) | |
369 | new_delay = dev_priv->cur_delay + 1; | |
370 | if (new_delay > dev_priv->max_delay) | |
371 | new_delay = dev_priv->max_delay; | |
372 | } else if (pm_iir & (GEN6_PM_RP_DOWN_THRESHOLD | GEN6_PM_RP_DOWN_TIMEOUT)) { | |
4912d041 | 373 | gen6_gt_force_wake_get(dev_priv); |
3b8d8d91 JB |
374 | if (dev_priv->cur_delay != dev_priv->min_delay) |
375 | new_delay = dev_priv->cur_delay - 1; | |
376 | if (new_delay < dev_priv->min_delay) { | |
377 | new_delay = dev_priv->min_delay; | |
378 | I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, | |
379 | I915_READ(GEN6_RP_INTERRUPT_LIMITS) | | |
380 | ((new_delay << 16) & 0x3f0000)); | |
381 | } else { | |
382 | /* Make sure we continue to get down interrupts | |
383 | * until we hit the minimum frequency */ | |
384 | I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, | |
385 | I915_READ(GEN6_RP_INTERRUPT_LIMITS) & ~0x3f0000); | |
386 | } | |
4912d041 | 387 | gen6_gt_force_wake_put(dev_priv); |
3b8d8d91 JB |
388 | } |
389 | ||
4912d041 | 390 | gen6_set_rps(dev_priv->dev, new_delay); |
3b8d8d91 JB |
391 | dev_priv->cur_delay = new_delay; |
392 | ||
4912d041 BW |
393 | /* |
394 | * rps_lock not held here because clearing is non-destructive. There is | |
395 | * an *extremely* unlikely race with gen6_rps_enable() that is prevented | |
396 | * by holding struct_mutex for the duration of the write. | |
397 | */ | |
4912d041 | 398 | mutex_unlock(&dev_priv->dev->struct_mutex); |
3b8d8d91 JB |
399 | } |
400 | ||
e7b4c6b1 DV |
401 | static void snb_gt_irq_handler(struct drm_device *dev, |
402 | struct drm_i915_private *dev_priv, | |
403 | u32 gt_iir) | |
404 | { | |
405 | ||
406 | if (gt_iir & (GEN6_RENDER_USER_INTERRUPT | | |
407 | GEN6_RENDER_PIPE_CONTROL_NOTIFY_INTERRUPT)) | |
408 | notify_ring(dev, &dev_priv->ring[RCS]); | |
409 | if (gt_iir & GEN6_BSD_USER_INTERRUPT) | |
410 | notify_ring(dev, &dev_priv->ring[VCS]); | |
411 | if (gt_iir & GEN6_BLITTER_USER_INTERRUPT) | |
412 | notify_ring(dev, &dev_priv->ring[BCS]); | |
413 | ||
414 | if (gt_iir & (GT_GEN6_BLT_CS_ERROR_INTERRUPT | | |
415 | GT_GEN6_BSD_CS_ERROR_INTERRUPT | | |
416 | GT_RENDER_CS_ERROR_INTERRUPT)) { | |
417 | DRM_ERROR("GT error interrupt 0x%08x\n", gt_iir); | |
418 | i915_handle_error(dev, false); | |
419 | } | |
420 | } | |
421 | ||
fc6826d1 CW |
422 | static void gen6_queue_rps_work(struct drm_i915_private *dev_priv, |
423 | u32 pm_iir) | |
424 | { | |
425 | unsigned long flags; | |
426 | ||
427 | /* | |
428 | * IIR bits should never already be set because IMR should | |
429 | * prevent an interrupt from being shown in IIR. The warning | |
430 | * displays a case where we've unsafely cleared | |
431 | * dev_priv->pm_iir. Although missing an interrupt of the same | |
432 | * type is not a problem, it displays a problem in the logic. | |
433 | * | |
434 | * The mask bit in IMR is cleared by rps_work. | |
435 | */ | |
436 | ||
437 | spin_lock_irqsave(&dev_priv->rps_lock, flags); | |
438 | WARN(dev_priv->pm_iir & pm_iir, "Missed a PM interrupt\n"); | |
439 | dev_priv->pm_iir |= pm_iir; | |
440 | I915_WRITE(GEN6_PMIMR, dev_priv->pm_iir); | |
441 | POSTING_READ(GEN6_PMIMR); | |
442 | spin_unlock_irqrestore(&dev_priv->rps_lock, flags); | |
443 | ||
444 | queue_work(dev_priv->wq, &dev_priv->rps_work); | |
445 | } | |
446 | ||
7e231dbe JB |
447 | static irqreturn_t valleyview_irq_handler(DRM_IRQ_ARGS) |
448 | { | |
449 | struct drm_device *dev = (struct drm_device *) arg; | |
450 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
451 | u32 iir, gt_iir, pm_iir; | |
452 | irqreturn_t ret = IRQ_NONE; | |
453 | unsigned long irqflags; | |
454 | int pipe; | |
455 | u32 pipe_stats[I915_MAX_PIPES]; | |
456 | u32 vblank_status; | |
457 | int vblank = 0; | |
458 | bool blc_event; | |
459 | ||
460 | atomic_inc(&dev_priv->irq_received); | |
461 | ||
462 | vblank_status = PIPE_START_VBLANK_INTERRUPT_STATUS | | |
463 | PIPE_VBLANK_INTERRUPT_STATUS; | |
464 | ||
465 | while (true) { | |
466 | iir = I915_READ(VLV_IIR); | |
467 | gt_iir = I915_READ(GTIIR); | |
468 | pm_iir = I915_READ(GEN6_PMIIR); | |
469 | ||
470 | if (gt_iir == 0 && pm_iir == 0 && iir == 0) | |
471 | goto out; | |
472 | ||
473 | ret = IRQ_HANDLED; | |
474 | ||
e7b4c6b1 | 475 | snb_gt_irq_handler(dev, dev_priv, gt_iir); |
7e231dbe JB |
476 | |
477 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
478 | for_each_pipe(pipe) { | |
479 | int reg = PIPESTAT(pipe); | |
480 | pipe_stats[pipe] = I915_READ(reg); | |
481 | ||
482 | /* | |
483 | * Clear the PIPE*STAT regs before the IIR | |
484 | */ | |
485 | if (pipe_stats[pipe] & 0x8000ffff) { | |
486 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) | |
487 | DRM_DEBUG_DRIVER("pipe %c underrun\n", | |
488 | pipe_name(pipe)); | |
489 | I915_WRITE(reg, pipe_stats[pipe]); | |
490 | } | |
491 | } | |
492 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
493 | ||
494 | /* Consume port. Then clear IIR or we'll miss events */ | |
495 | if (iir & I915_DISPLAY_PORT_INTERRUPT) { | |
496 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); | |
497 | ||
498 | DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", | |
499 | hotplug_status); | |
500 | if (hotplug_status & dev_priv->hotplug_supported_mask) | |
501 | queue_work(dev_priv->wq, | |
502 | &dev_priv->hotplug_work); | |
503 | ||
504 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); | |
505 | I915_READ(PORT_HOTPLUG_STAT); | |
506 | } | |
507 | ||
508 | ||
509 | if (iir & I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT) { | |
510 | drm_handle_vblank(dev, 0); | |
511 | vblank++; | |
e0f608d7 | 512 | intel_finish_page_flip(dev, 0); |
7e231dbe JB |
513 | } |
514 | ||
515 | if (iir & I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT) { | |
516 | drm_handle_vblank(dev, 1); | |
517 | vblank++; | |
e0f608d7 | 518 | intel_finish_page_flip(dev, 0); |
7e231dbe JB |
519 | } |
520 | ||
521 | if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) | |
522 | blc_event = true; | |
523 | ||
fc6826d1 CW |
524 | if (pm_iir & GEN6_PM_DEFERRED_EVENTS) |
525 | gen6_queue_rps_work(dev_priv, pm_iir); | |
7e231dbe JB |
526 | |
527 | I915_WRITE(GTIIR, gt_iir); | |
528 | I915_WRITE(GEN6_PMIIR, pm_iir); | |
529 | I915_WRITE(VLV_IIR, iir); | |
530 | } | |
531 | ||
532 | out: | |
533 | return ret; | |
534 | } | |
535 | ||
9adab8b5 | 536 | static void pch_irq_handler(struct drm_device *dev, u32 pch_iir) |
776ad806 JB |
537 | { |
538 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
9db4a9c7 | 539 | int pipe; |
776ad806 | 540 | |
776ad806 JB |
541 | if (pch_iir & SDE_AUDIO_POWER_MASK) |
542 | DRM_DEBUG_DRIVER("PCH audio power change on port %d\n", | |
543 | (pch_iir & SDE_AUDIO_POWER_MASK) >> | |
544 | SDE_AUDIO_POWER_SHIFT); | |
545 | ||
546 | if (pch_iir & SDE_GMBUS) | |
547 | DRM_DEBUG_DRIVER("PCH GMBUS interrupt\n"); | |
548 | ||
549 | if (pch_iir & SDE_AUDIO_HDCP_MASK) | |
550 | DRM_DEBUG_DRIVER("PCH HDCP audio interrupt\n"); | |
551 | ||
552 | if (pch_iir & SDE_AUDIO_TRANS_MASK) | |
553 | DRM_DEBUG_DRIVER("PCH transcoder audio interrupt\n"); | |
554 | ||
555 | if (pch_iir & SDE_POISON) | |
556 | DRM_ERROR("PCH poison interrupt\n"); | |
557 | ||
9db4a9c7 JB |
558 | if (pch_iir & SDE_FDI_MASK) |
559 | for_each_pipe(pipe) | |
560 | DRM_DEBUG_DRIVER(" pipe %c FDI IIR: 0x%08x\n", | |
561 | pipe_name(pipe), | |
562 | I915_READ(FDI_RX_IIR(pipe))); | |
776ad806 JB |
563 | |
564 | if (pch_iir & (SDE_TRANSB_CRC_DONE | SDE_TRANSA_CRC_DONE)) | |
565 | DRM_DEBUG_DRIVER("PCH transcoder CRC done interrupt\n"); | |
566 | ||
567 | if (pch_iir & (SDE_TRANSB_CRC_ERR | SDE_TRANSA_CRC_ERR)) | |
568 | DRM_DEBUG_DRIVER("PCH transcoder CRC error interrupt\n"); | |
569 | ||
570 | if (pch_iir & SDE_TRANSB_FIFO_UNDER) | |
571 | DRM_DEBUG_DRIVER("PCH transcoder B underrun interrupt\n"); | |
572 | if (pch_iir & SDE_TRANSA_FIFO_UNDER) | |
573 | DRM_DEBUG_DRIVER("PCH transcoder A underrun interrupt\n"); | |
574 | } | |
575 | ||
f71d4af4 | 576 | static irqreturn_t ivybridge_irq_handler(DRM_IRQ_ARGS) |
b1f14ad0 JB |
577 | { |
578 | struct drm_device *dev = (struct drm_device *) arg; | |
579 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
0e43406b CW |
580 | u32 de_iir, gt_iir, de_ier, pm_iir; |
581 | irqreturn_t ret = IRQ_NONE; | |
582 | int i; | |
b1f14ad0 JB |
583 | |
584 | atomic_inc(&dev_priv->irq_received); | |
585 | ||
586 | /* disable master interrupt before clearing iir */ | |
587 | de_ier = I915_READ(DEIER); | |
588 | I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL); | |
b1f14ad0 | 589 | |
b1f14ad0 | 590 | gt_iir = I915_READ(GTIIR); |
0e43406b CW |
591 | if (gt_iir) { |
592 | snb_gt_irq_handler(dev, dev_priv, gt_iir); | |
593 | I915_WRITE(GTIIR, gt_iir); | |
594 | ret = IRQ_HANDLED; | |
b1f14ad0 JB |
595 | } |
596 | ||
0e43406b CW |
597 | de_iir = I915_READ(DEIIR); |
598 | if (de_iir) { | |
599 | if (de_iir & DE_GSE_IVB) | |
600 | intel_opregion_gse_intr(dev); | |
601 | ||
602 | for (i = 0; i < 3; i++) { | |
603 | if (de_iir & (DE_PLANEA_FLIP_DONE_IVB << (5 * i))) { | |
604 | intel_prepare_page_flip(dev, i); | |
605 | intel_finish_page_flip_plane(dev, i); | |
606 | } | |
607 | if (de_iir & (DE_PIPEA_VBLANK_IVB << (5 * i))) | |
608 | drm_handle_vblank(dev, i); | |
609 | } | |
b615b57a | 610 | |
0e43406b CW |
611 | /* check event from PCH */ |
612 | if (de_iir & DE_PCH_EVENT_IVB) { | |
613 | u32 pch_iir = I915_READ(SDEIIR); | |
b1f14ad0 | 614 | |
0e43406b CW |
615 | if (pch_iir & SDE_HOTPLUG_MASK_CPT) |
616 | queue_work(dev_priv->wq, &dev_priv->hotplug_work); | |
617 | pch_irq_handler(dev, pch_iir); | |
b1f14ad0 | 618 | |
0e43406b CW |
619 | /* clear PCH hotplug event before clear CPU irq */ |
620 | I915_WRITE(SDEIIR, pch_iir); | |
621 | } | |
b615b57a | 622 | |
0e43406b CW |
623 | I915_WRITE(DEIIR, de_iir); |
624 | ret = IRQ_HANDLED; | |
b1f14ad0 JB |
625 | } |
626 | ||
0e43406b CW |
627 | pm_iir = I915_READ(GEN6_PMIIR); |
628 | if (pm_iir) { | |
629 | if (pm_iir & GEN6_PM_DEFERRED_EVENTS) | |
630 | gen6_queue_rps_work(dev_priv, pm_iir); | |
631 | I915_WRITE(GEN6_PMIIR, pm_iir); | |
632 | ret = IRQ_HANDLED; | |
633 | } | |
b1f14ad0 | 634 | |
b1f14ad0 JB |
635 | I915_WRITE(DEIER, de_ier); |
636 | POSTING_READ(DEIER); | |
637 | ||
638 | return ret; | |
639 | } | |
640 | ||
e7b4c6b1 DV |
641 | static void ilk_gt_irq_handler(struct drm_device *dev, |
642 | struct drm_i915_private *dev_priv, | |
643 | u32 gt_iir) | |
644 | { | |
645 | if (gt_iir & (GT_USER_INTERRUPT | GT_PIPE_NOTIFY)) | |
646 | notify_ring(dev, &dev_priv->ring[RCS]); | |
647 | if (gt_iir & GT_BSD_USER_INTERRUPT) | |
648 | notify_ring(dev, &dev_priv->ring[VCS]); | |
649 | } | |
650 | ||
f71d4af4 | 651 | static irqreturn_t ironlake_irq_handler(DRM_IRQ_ARGS) |
036a4a7d | 652 | { |
4697995b | 653 | struct drm_device *dev = (struct drm_device *) arg; |
036a4a7d ZW |
654 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
655 | int ret = IRQ_NONE; | |
3b8d8d91 | 656 | u32 de_iir, gt_iir, de_ier, pch_iir, pm_iir; |
2d7b8366 | 657 | u32 hotplug_mask; |
881f47b6 | 658 | |
4697995b JB |
659 | atomic_inc(&dev_priv->irq_received); |
660 | ||
2d109a84 ZN |
661 | /* disable master interrupt before clearing iir */ |
662 | de_ier = I915_READ(DEIER); | |
663 | I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL); | |
3143a2bf | 664 | POSTING_READ(DEIER); |
2d109a84 | 665 | |
036a4a7d ZW |
666 | de_iir = I915_READ(DEIIR); |
667 | gt_iir = I915_READ(GTIIR); | |
c650156a | 668 | pch_iir = I915_READ(SDEIIR); |
3b8d8d91 | 669 | pm_iir = I915_READ(GEN6_PMIIR); |
036a4a7d | 670 | |
3b8d8d91 JB |
671 | if (de_iir == 0 && gt_iir == 0 && pch_iir == 0 && |
672 | (!IS_GEN6(dev) || pm_iir == 0)) | |
c7c85101 | 673 | goto done; |
036a4a7d | 674 | |
2d7b8366 YL |
675 | if (HAS_PCH_CPT(dev)) |
676 | hotplug_mask = SDE_HOTPLUG_MASK_CPT; | |
677 | else | |
678 | hotplug_mask = SDE_HOTPLUG_MASK; | |
679 | ||
c7c85101 | 680 | ret = IRQ_HANDLED; |
036a4a7d | 681 | |
e7b4c6b1 DV |
682 | if (IS_GEN5(dev)) |
683 | ilk_gt_irq_handler(dev, dev_priv, gt_iir); | |
684 | else | |
685 | snb_gt_irq_handler(dev, dev_priv, gt_iir); | |
01c66889 | 686 | |
c7c85101 | 687 | if (de_iir & DE_GSE) |
3b617967 | 688 | intel_opregion_gse_intr(dev); |
c650156a | 689 | |
f072d2e7 | 690 | if (de_iir & DE_PLANEA_FLIP_DONE) { |
013d5aa2 | 691 | intel_prepare_page_flip(dev, 0); |
2bbda389 | 692 | intel_finish_page_flip_plane(dev, 0); |
f072d2e7 | 693 | } |
013d5aa2 | 694 | |
f072d2e7 | 695 | if (de_iir & DE_PLANEB_FLIP_DONE) { |
013d5aa2 | 696 | intel_prepare_page_flip(dev, 1); |
2bbda389 | 697 | intel_finish_page_flip_plane(dev, 1); |
f072d2e7 | 698 | } |
013d5aa2 | 699 | |
f072d2e7 | 700 | if (de_iir & DE_PIPEA_VBLANK) |
c062df61 LP |
701 | drm_handle_vblank(dev, 0); |
702 | ||
f072d2e7 | 703 | if (de_iir & DE_PIPEB_VBLANK) |
c062df61 LP |
704 | drm_handle_vblank(dev, 1); |
705 | ||
c7c85101 | 706 | /* check event from PCH */ |
776ad806 JB |
707 | if (de_iir & DE_PCH_EVENT) { |
708 | if (pch_iir & hotplug_mask) | |
709 | queue_work(dev_priv->wq, &dev_priv->hotplug_work); | |
9adab8b5 | 710 | pch_irq_handler(dev, pch_iir); |
776ad806 | 711 | } |
036a4a7d | 712 | |
f97108d1 | 713 | if (de_iir & DE_PCU_EVENT) { |
7648fa99 | 714 | I915_WRITE16(MEMINTRSTS, I915_READ(MEMINTRSTS)); |
f97108d1 JB |
715 | i915_handle_rps_change(dev); |
716 | } | |
717 | ||
fc6826d1 CW |
718 | if (IS_GEN6(dev) && pm_iir & GEN6_PM_DEFERRED_EVENTS) |
719 | gen6_queue_rps_work(dev_priv, pm_iir); | |
3b8d8d91 | 720 | |
c7c85101 ZN |
721 | /* should clear PCH hotplug event before clear CPU irq */ |
722 | I915_WRITE(SDEIIR, pch_iir); | |
723 | I915_WRITE(GTIIR, gt_iir); | |
724 | I915_WRITE(DEIIR, de_iir); | |
4912d041 | 725 | I915_WRITE(GEN6_PMIIR, pm_iir); |
c7c85101 ZN |
726 | |
727 | done: | |
2d109a84 | 728 | I915_WRITE(DEIER, de_ier); |
3143a2bf | 729 | POSTING_READ(DEIER); |
2d109a84 | 730 | |
036a4a7d ZW |
731 | return ret; |
732 | } | |
733 | ||
8a905236 JB |
734 | /** |
735 | * i915_error_work_func - do process context error handling work | |
736 | * @work: work struct | |
737 | * | |
738 | * Fire an error uevent so userspace can see that a hang or error | |
739 | * was detected. | |
740 | */ | |
741 | static void i915_error_work_func(struct work_struct *work) | |
742 | { | |
743 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, | |
744 | error_work); | |
745 | struct drm_device *dev = dev_priv->dev; | |
f316a42c BG |
746 | char *error_event[] = { "ERROR=1", NULL }; |
747 | char *reset_event[] = { "RESET=1", NULL }; | |
748 | char *reset_done_event[] = { "ERROR=0", NULL }; | |
8a905236 | 749 | |
f316a42c BG |
750 | kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, error_event); |
751 | ||
ba1234d1 | 752 | if (atomic_read(&dev_priv->mm.wedged)) { |
f803aa55 CW |
753 | DRM_DEBUG_DRIVER("resetting chip\n"); |
754 | kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, reset_event); | |
d4b8bb2a | 755 | if (!i915_reset(dev)) { |
f803aa55 CW |
756 | atomic_set(&dev_priv->mm.wedged, 0); |
757 | kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, reset_done_event); | |
f316a42c | 758 | } |
30dbf0c0 | 759 | complete_all(&dev_priv->error_completion); |
f316a42c | 760 | } |
8a905236 JB |
761 | } |
762 | ||
3bd3c932 | 763 | #ifdef CONFIG_DEBUG_FS |
9df30794 | 764 | static struct drm_i915_error_object * |
bcfb2e28 | 765 | i915_error_object_create(struct drm_i915_private *dev_priv, |
05394f39 | 766 | struct drm_i915_gem_object *src) |
9df30794 CW |
767 | { |
768 | struct drm_i915_error_object *dst; | |
9df30794 | 769 | int page, page_count; |
e56660dd | 770 | u32 reloc_offset; |
9df30794 | 771 | |
05394f39 | 772 | if (src == NULL || src->pages == NULL) |
9df30794 CW |
773 | return NULL; |
774 | ||
05394f39 | 775 | page_count = src->base.size / PAGE_SIZE; |
9df30794 | 776 | |
0206e353 | 777 | dst = kmalloc(sizeof(*dst) + page_count * sizeof(u32 *), GFP_ATOMIC); |
9df30794 CW |
778 | if (dst == NULL) |
779 | return NULL; | |
780 | ||
05394f39 | 781 | reloc_offset = src->gtt_offset; |
9df30794 | 782 | for (page = 0; page < page_count; page++) { |
788885ae | 783 | unsigned long flags; |
e56660dd | 784 | void *d; |
788885ae | 785 | |
e56660dd | 786 | d = kmalloc(PAGE_SIZE, GFP_ATOMIC); |
9df30794 CW |
787 | if (d == NULL) |
788 | goto unwind; | |
e56660dd | 789 | |
788885ae | 790 | local_irq_save(flags); |
74898d7e DV |
791 | if (reloc_offset < dev_priv->mm.gtt_mappable_end && |
792 | src->has_global_gtt_mapping) { | |
172975aa CW |
793 | void __iomem *s; |
794 | ||
795 | /* Simply ignore tiling or any overlapping fence. | |
796 | * It's part of the error state, and this hopefully | |
797 | * captures what the GPU read. | |
798 | */ | |
799 | ||
800 | s = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping, | |
801 | reloc_offset); | |
802 | memcpy_fromio(d, s, PAGE_SIZE); | |
803 | io_mapping_unmap_atomic(s); | |
804 | } else { | |
805 | void *s; | |
806 | ||
807 | drm_clflush_pages(&src->pages[page], 1); | |
808 | ||
809 | s = kmap_atomic(src->pages[page]); | |
810 | memcpy(d, s, PAGE_SIZE); | |
811 | kunmap_atomic(s); | |
812 | ||
813 | drm_clflush_pages(&src->pages[page], 1); | |
814 | } | |
788885ae | 815 | local_irq_restore(flags); |
e56660dd | 816 | |
9df30794 | 817 | dst->pages[page] = d; |
e56660dd CW |
818 | |
819 | reloc_offset += PAGE_SIZE; | |
9df30794 CW |
820 | } |
821 | dst->page_count = page_count; | |
05394f39 | 822 | dst->gtt_offset = src->gtt_offset; |
9df30794 CW |
823 | |
824 | return dst; | |
825 | ||
826 | unwind: | |
827 | while (page--) | |
828 | kfree(dst->pages[page]); | |
829 | kfree(dst); | |
830 | return NULL; | |
831 | } | |
832 | ||
833 | static void | |
834 | i915_error_object_free(struct drm_i915_error_object *obj) | |
835 | { | |
836 | int page; | |
837 | ||
838 | if (obj == NULL) | |
839 | return; | |
840 | ||
841 | for (page = 0; page < obj->page_count; page++) | |
842 | kfree(obj->pages[page]); | |
843 | ||
844 | kfree(obj); | |
845 | } | |
846 | ||
742cbee8 DV |
847 | void |
848 | i915_error_state_free(struct kref *error_ref) | |
9df30794 | 849 | { |
742cbee8 DV |
850 | struct drm_i915_error_state *error = container_of(error_ref, |
851 | typeof(*error), ref); | |
e2f973d5 CW |
852 | int i; |
853 | ||
52d39a21 CW |
854 | for (i = 0; i < ARRAY_SIZE(error->ring); i++) { |
855 | i915_error_object_free(error->ring[i].batchbuffer); | |
856 | i915_error_object_free(error->ring[i].ringbuffer); | |
857 | kfree(error->ring[i].requests); | |
858 | } | |
e2f973d5 | 859 | |
9df30794 | 860 | kfree(error->active_bo); |
6ef3d427 | 861 | kfree(error->overlay); |
9df30794 CW |
862 | kfree(error); |
863 | } | |
1b50247a CW |
864 | static void capture_bo(struct drm_i915_error_buffer *err, |
865 | struct drm_i915_gem_object *obj) | |
866 | { | |
867 | err->size = obj->base.size; | |
868 | err->name = obj->base.name; | |
869 | err->seqno = obj->last_rendering_seqno; | |
870 | err->gtt_offset = obj->gtt_offset; | |
871 | err->read_domains = obj->base.read_domains; | |
872 | err->write_domain = obj->base.write_domain; | |
873 | err->fence_reg = obj->fence_reg; | |
874 | err->pinned = 0; | |
875 | if (obj->pin_count > 0) | |
876 | err->pinned = 1; | |
877 | if (obj->user_pin_count > 0) | |
878 | err->pinned = -1; | |
879 | err->tiling = obj->tiling_mode; | |
880 | err->dirty = obj->dirty; | |
881 | err->purgeable = obj->madv != I915_MADV_WILLNEED; | |
882 | err->ring = obj->ring ? obj->ring->id : -1; | |
883 | err->cache_level = obj->cache_level; | |
884 | } | |
9df30794 | 885 | |
1b50247a CW |
886 | static u32 capture_active_bo(struct drm_i915_error_buffer *err, |
887 | int count, struct list_head *head) | |
c724e8a9 CW |
888 | { |
889 | struct drm_i915_gem_object *obj; | |
890 | int i = 0; | |
891 | ||
892 | list_for_each_entry(obj, head, mm_list) { | |
1b50247a | 893 | capture_bo(err++, obj); |
c724e8a9 CW |
894 | if (++i == count) |
895 | break; | |
1b50247a CW |
896 | } |
897 | ||
898 | return i; | |
899 | } | |
900 | ||
901 | static u32 capture_pinned_bo(struct drm_i915_error_buffer *err, | |
902 | int count, struct list_head *head) | |
903 | { | |
904 | struct drm_i915_gem_object *obj; | |
905 | int i = 0; | |
906 | ||
907 | list_for_each_entry(obj, head, gtt_list) { | |
908 | if (obj->pin_count == 0) | |
909 | continue; | |
c724e8a9 | 910 | |
1b50247a CW |
911 | capture_bo(err++, obj); |
912 | if (++i == count) | |
913 | break; | |
c724e8a9 CW |
914 | } |
915 | ||
916 | return i; | |
917 | } | |
918 | ||
748ebc60 CW |
919 | static void i915_gem_record_fences(struct drm_device *dev, |
920 | struct drm_i915_error_state *error) | |
921 | { | |
922 | struct drm_i915_private *dev_priv = dev->dev_private; | |
923 | int i; | |
924 | ||
925 | /* Fences */ | |
926 | switch (INTEL_INFO(dev)->gen) { | |
775d17b6 | 927 | case 7: |
748ebc60 CW |
928 | case 6: |
929 | for (i = 0; i < 16; i++) | |
930 | error->fence[i] = I915_READ64(FENCE_REG_SANDYBRIDGE_0 + (i * 8)); | |
931 | break; | |
932 | case 5: | |
933 | case 4: | |
934 | for (i = 0; i < 16; i++) | |
935 | error->fence[i] = I915_READ64(FENCE_REG_965_0 + (i * 8)); | |
936 | break; | |
937 | case 3: | |
938 | if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) | |
939 | for (i = 0; i < 8; i++) | |
940 | error->fence[i+8] = I915_READ(FENCE_REG_945_8 + (i * 4)); | |
941 | case 2: | |
942 | for (i = 0; i < 8; i++) | |
943 | error->fence[i] = I915_READ(FENCE_REG_830_0 + (i * 4)); | |
944 | break; | |
945 | ||
946 | } | |
947 | } | |
948 | ||
bcfb2e28 CW |
949 | static struct drm_i915_error_object * |
950 | i915_error_first_batchbuffer(struct drm_i915_private *dev_priv, | |
951 | struct intel_ring_buffer *ring) | |
952 | { | |
953 | struct drm_i915_gem_object *obj; | |
954 | u32 seqno; | |
955 | ||
956 | if (!ring->get_seqno) | |
957 | return NULL; | |
958 | ||
959 | seqno = ring->get_seqno(ring); | |
960 | list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) { | |
961 | if (obj->ring != ring) | |
962 | continue; | |
963 | ||
c37d9a5d | 964 | if (i915_seqno_passed(seqno, obj->last_rendering_seqno)) |
bcfb2e28 CW |
965 | continue; |
966 | ||
967 | if ((obj->base.read_domains & I915_GEM_DOMAIN_COMMAND) == 0) | |
968 | continue; | |
969 | ||
970 | /* We need to copy these to an anonymous buffer as the simplest | |
971 | * method to avoid being overwritten by userspace. | |
972 | */ | |
973 | return i915_error_object_create(dev_priv, obj); | |
974 | } | |
975 | ||
976 | return NULL; | |
977 | } | |
978 | ||
d27b1e0e DV |
979 | static void i915_record_ring_state(struct drm_device *dev, |
980 | struct drm_i915_error_state *error, | |
981 | struct intel_ring_buffer *ring) | |
982 | { | |
983 | struct drm_i915_private *dev_priv = dev->dev_private; | |
984 | ||
33f3f518 | 985 | if (INTEL_INFO(dev)->gen >= 6) { |
33f3f518 | 986 | error->fault_reg[ring->id] = I915_READ(RING_FAULT_REG(ring)); |
7e3b8737 DV |
987 | error->semaphore_mboxes[ring->id][0] |
988 | = I915_READ(RING_SYNC_0(ring->mmio_base)); | |
989 | error->semaphore_mboxes[ring->id][1] | |
990 | = I915_READ(RING_SYNC_1(ring->mmio_base)); | |
33f3f518 | 991 | } |
c1cd90ed | 992 | |
d27b1e0e | 993 | if (INTEL_INFO(dev)->gen >= 4) { |
9d2f41fa | 994 | error->faddr[ring->id] = I915_READ(RING_DMA_FADD(ring->mmio_base)); |
d27b1e0e DV |
995 | error->ipeir[ring->id] = I915_READ(RING_IPEIR(ring->mmio_base)); |
996 | error->ipehr[ring->id] = I915_READ(RING_IPEHR(ring->mmio_base)); | |
997 | error->instdone[ring->id] = I915_READ(RING_INSTDONE(ring->mmio_base)); | |
c1cd90ed | 998 | error->instps[ring->id] = I915_READ(RING_INSTPS(ring->mmio_base)); |
d27b1e0e | 999 | if (ring->id == RCS) { |
d27b1e0e DV |
1000 | error->instdone1 = I915_READ(INSTDONE1); |
1001 | error->bbaddr = I915_READ64(BB_ADDR); | |
1002 | } | |
1003 | } else { | |
9d2f41fa | 1004 | error->faddr[ring->id] = I915_READ(DMA_FADD_I8XX); |
d27b1e0e DV |
1005 | error->ipeir[ring->id] = I915_READ(IPEIR); |
1006 | error->ipehr[ring->id] = I915_READ(IPEHR); | |
1007 | error->instdone[ring->id] = I915_READ(INSTDONE); | |
d27b1e0e DV |
1008 | } |
1009 | ||
9574b3fe | 1010 | error->waiting[ring->id] = waitqueue_active(&ring->irq_queue); |
c1cd90ed | 1011 | error->instpm[ring->id] = I915_READ(RING_INSTPM(ring->mmio_base)); |
d27b1e0e DV |
1012 | error->seqno[ring->id] = ring->get_seqno(ring); |
1013 | error->acthd[ring->id] = intel_ring_get_active_head(ring); | |
c1cd90ed DV |
1014 | error->head[ring->id] = I915_READ_HEAD(ring); |
1015 | error->tail[ring->id] = I915_READ_TAIL(ring); | |
7e3b8737 DV |
1016 | |
1017 | error->cpu_ring_head[ring->id] = ring->head; | |
1018 | error->cpu_ring_tail[ring->id] = ring->tail; | |
d27b1e0e DV |
1019 | } |
1020 | ||
52d39a21 CW |
1021 | static void i915_gem_record_rings(struct drm_device *dev, |
1022 | struct drm_i915_error_state *error) | |
1023 | { | |
1024 | struct drm_i915_private *dev_priv = dev->dev_private; | |
b4519513 | 1025 | struct intel_ring_buffer *ring; |
52d39a21 CW |
1026 | struct drm_i915_gem_request *request; |
1027 | int i, count; | |
1028 | ||
b4519513 | 1029 | for_each_ring(ring, dev_priv, i) { |
52d39a21 CW |
1030 | i915_record_ring_state(dev, error, ring); |
1031 | ||
1032 | error->ring[i].batchbuffer = | |
1033 | i915_error_first_batchbuffer(dev_priv, ring); | |
1034 | ||
1035 | error->ring[i].ringbuffer = | |
1036 | i915_error_object_create(dev_priv, ring->obj); | |
1037 | ||
1038 | count = 0; | |
1039 | list_for_each_entry(request, &ring->request_list, list) | |
1040 | count++; | |
1041 | ||
1042 | error->ring[i].num_requests = count; | |
1043 | error->ring[i].requests = | |
1044 | kmalloc(count*sizeof(struct drm_i915_error_request), | |
1045 | GFP_ATOMIC); | |
1046 | if (error->ring[i].requests == NULL) { | |
1047 | error->ring[i].num_requests = 0; | |
1048 | continue; | |
1049 | } | |
1050 | ||
1051 | count = 0; | |
1052 | list_for_each_entry(request, &ring->request_list, list) { | |
1053 | struct drm_i915_error_request *erq; | |
1054 | ||
1055 | erq = &error->ring[i].requests[count++]; | |
1056 | erq->seqno = request->seqno; | |
1057 | erq->jiffies = request->emitted_jiffies; | |
ee4f42b1 | 1058 | erq->tail = request->tail; |
52d39a21 CW |
1059 | } |
1060 | } | |
1061 | } | |
1062 | ||
8a905236 JB |
1063 | /** |
1064 | * i915_capture_error_state - capture an error record for later analysis | |
1065 | * @dev: drm device | |
1066 | * | |
1067 | * Should be called when an error is detected (either a hang or an error | |
1068 | * interrupt) to capture error state from the time of the error. Fills | |
1069 | * out a structure which becomes available in debugfs for user level tools | |
1070 | * to pick up. | |
1071 | */ | |
63eeaf38 JB |
1072 | static void i915_capture_error_state(struct drm_device *dev) |
1073 | { | |
1074 | struct drm_i915_private *dev_priv = dev->dev_private; | |
05394f39 | 1075 | struct drm_i915_gem_object *obj; |
63eeaf38 JB |
1076 | struct drm_i915_error_state *error; |
1077 | unsigned long flags; | |
9db4a9c7 | 1078 | int i, pipe; |
63eeaf38 JB |
1079 | |
1080 | spin_lock_irqsave(&dev_priv->error_lock, flags); | |
9df30794 CW |
1081 | error = dev_priv->first_error; |
1082 | spin_unlock_irqrestore(&dev_priv->error_lock, flags); | |
1083 | if (error) | |
1084 | return; | |
63eeaf38 | 1085 | |
9db4a9c7 | 1086 | /* Account for pipe specific data like PIPE*STAT */ |
33f3f518 | 1087 | error = kzalloc(sizeof(*error), GFP_ATOMIC); |
63eeaf38 | 1088 | if (!error) { |
9df30794 CW |
1089 | DRM_DEBUG_DRIVER("out of memory, not capturing error state\n"); |
1090 | return; | |
63eeaf38 JB |
1091 | } |
1092 | ||
b6f7833b CW |
1093 | DRM_INFO("capturing error event; look for more information in /debug/dri/%d/i915_error_state\n", |
1094 | dev->primary->index); | |
2fa772f3 | 1095 | |
742cbee8 | 1096 | kref_init(&error->ref); |
63eeaf38 JB |
1097 | error->eir = I915_READ(EIR); |
1098 | error->pgtbl_er = I915_READ(PGTBL_ER); | |
be998e2e BW |
1099 | |
1100 | if (HAS_PCH_SPLIT(dev)) | |
1101 | error->ier = I915_READ(DEIER) | I915_READ(GTIER); | |
1102 | else if (IS_VALLEYVIEW(dev)) | |
1103 | error->ier = I915_READ(GTIER) | I915_READ(VLV_IER); | |
1104 | else if (IS_GEN2(dev)) | |
1105 | error->ier = I915_READ16(IER); | |
1106 | else | |
1107 | error->ier = I915_READ(IER); | |
1108 | ||
9db4a9c7 JB |
1109 | for_each_pipe(pipe) |
1110 | error->pipestat[pipe] = I915_READ(PIPESTAT(pipe)); | |
d27b1e0e | 1111 | |
33f3f518 | 1112 | if (INTEL_INFO(dev)->gen >= 6) { |
f406839f | 1113 | error->error = I915_READ(ERROR_GEN6); |
33f3f518 DV |
1114 | error->done_reg = I915_READ(DONE_REG); |
1115 | } | |
d27b1e0e | 1116 | |
748ebc60 | 1117 | i915_gem_record_fences(dev, error); |
52d39a21 | 1118 | i915_gem_record_rings(dev, error); |
9df30794 | 1119 | |
c724e8a9 | 1120 | /* Record buffers on the active and pinned lists. */ |
9df30794 | 1121 | error->active_bo = NULL; |
c724e8a9 | 1122 | error->pinned_bo = NULL; |
9df30794 | 1123 | |
bcfb2e28 CW |
1124 | i = 0; |
1125 | list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) | |
1126 | i++; | |
1127 | error->active_bo_count = i; | |
1b50247a CW |
1128 | list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) |
1129 | if (obj->pin_count) | |
1130 | i++; | |
bcfb2e28 | 1131 | error->pinned_bo_count = i - error->active_bo_count; |
c724e8a9 | 1132 | |
8e934dbf CW |
1133 | error->active_bo = NULL; |
1134 | error->pinned_bo = NULL; | |
bcfb2e28 CW |
1135 | if (i) { |
1136 | error->active_bo = kmalloc(sizeof(*error->active_bo)*i, | |
9df30794 | 1137 | GFP_ATOMIC); |
c724e8a9 CW |
1138 | if (error->active_bo) |
1139 | error->pinned_bo = | |
1140 | error->active_bo + error->active_bo_count; | |
9df30794 CW |
1141 | } |
1142 | ||
c724e8a9 CW |
1143 | if (error->active_bo) |
1144 | error->active_bo_count = | |
1b50247a CW |
1145 | capture_active_bo(error->active_bo, |
1146 | error->active_bo_count, | |
1147 | &dev_priv->mm.active_list); | |
c724e8a9 CW |
1148 | |
1149 | if (error->pinned_bo) | |
1150 | error->pinned_bo_count = | |
1b50247a CW |
1151 | capture_pinned_bo(error->pinned_bo, |
1152 | error->pinned_bo_count, | |
1153 | &dev_priv->mm.gtt_list); | |
c724e8a9 | 1154 | |
9df30794 CW |
1155 | do_gettimeofday(&error->time); |
1156 | ||
6ef3d427 | 1157 | error->overlay = intel_overlay_capture_error_state(dev); |
c4a1d9e4 | 1158 | error->display = intel_display_capture_error_state(dev); |
6ef3d427 | 1159 | |
9df30794 CW |
1160 | spin_lock_irqsave(&dev_priv->error_lock, flags); |
1161 | if (dev_priv->first_error == NULL) { | |
1162 | dev_priv->first_error = error; | |
1163 | error = NULL; | |
1164 | } | |
63eeaf38 | 1165 | spin_unlock_irqrestore(&dev_priv->error_lock, flags); |
9df30794 CW |
1166 | |
1167 | if (error) | |
742cbee8 | 1168 | i915_error_state_free(&error->ref); |
9df30794 CW |
1169 | } |
1170 | ||
1171 | void i915_destroy_error_state(struct drm_device *dev) | |
1172 | { | |
1173 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1174 | struct drm_i915_error_state *error; | |
6dc0e816 | 1175 | unsigned long flags; |
9df30794 | 1176 | |
6dc0e816 | 1177 | spin_lock_irqsave(&dev_priv->error_lock, flags); |
9df30794 CW |
1178 | error = dev_priv->first_error; |
1179 | dev_priv->first_error = NULL; | |
6dc0e816 | 1180 | spin_unlock_irqrestore(&dev_priv->error_lock, flags); |
9df30794 CW |
1181 | |
1182 | if (error) | |
742cbee8 | 1183 | kref_put(&error->ref, i915_error_state_free); |
63eeaf38 | 1184 | } |
3bd3c932 CW |
1185 | #else |
1186 | #define i915_capture_error_state(x) | |
1187 | #endif | |
63eeaf38 | 1188 | |
35aed2e6 | 1189 | static void i915_report_and_clear_eir(struct drm_device *dev) |
8a905236 JB |
1190 | { |
1191 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1192 | u32 eir = I915_READ(EIR); | |
9db4a9c7 | 1193 | int pipe; |
8a905236 | 1194 | |
35aed2e6 CW |
1195 | if (!eir) |
1196 | return; | |
8a905236 | 1197 | |
a70491cc | 1198 | pr_err("render error detected, EIR: 0x%08x\n", eir); |
8a905236 JB |
1199 | |
1200 | if (IS_G4X(dev)) { | |
1201 | if (eir & (GM45_ERROR_MEM_PRIV | GM45_ERROR_CP_PRIV)) { | |
1202 | u32 ipeir = I915_READ(IPEIR_I965); | |
1203 | ||
a70491cc JP |
1204 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR_I965)); |
1205 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR_I965)); | |
1206 | pr_err(" INSTDONE: 0x%08x\n", | |
8a905236 | 1207 | I915_READ(INSTDONE_I965)); |
a70491cc JP |
1208 | pr_err(" INSTPS: 0x%08x\n", I915_READ(INSTPS)); |
1209 | pr_err(" INSTDONE1: 0x%08x\n", I915_READ(INSTDONE1)); | |
1210 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD_I965)); | |
8a905236 | 1211 | I915_WRITE(IPEIR_I965, ipeir); |
3143a2bf | 1212 | POSTING_READ(IPEIR_I965); |
8a905236 JB |
1213 | } |
1214 | if (eir & GM45_ERROR_PAGE_TABLE) { | |
1215 | u32 pgtbl_err = I915_READ(PGTBL_ER); | |
a70491cc JP |
1216 | pr_err("page table error\n"); |
1217 | pr_err(" PGTBL_ER: 0x%08x\n", pgtbl_err); | |
8a905236 | 1218 | I915_WRITE(PGTBL_ER, pgtbl_err); |
3143a2bf | 1219 | POSTING_READ(PGTBL_ER); |
8a905236 JB |
1220 | } |
1221 | } | |
1222 | ||
a6c45cf0 | 1223 | if (!IS_GEN2(dev)) { |
8a905236 JB |
1224 | if (eir & I915_ERROR_PAGE_TABLE) { |
1225 | u32 pgtbl_err = I915_READ(PGTBL_ER); | |
a70491cc JP |
1226 | pr_err("page table error\n"); |
1227 | pr_err(" PGTBL_ER: 0x%08x\n", pgtbl_err); | |
8a905236 | 1228 | I915_WRITE(PGTBL_ER, pgtbl_err); |
3143a2bf | 1229 | POSTING_READ(PGTBL_ER); |
8a905236 JB |
1230 | } |
1231 | } | |
1232 | ||
1233 | if (eir & I915_ERROR_MEMORY_REFRESH) { | |
a70491cc | 1234 | pr_err("memory refresh error:\n"); |
9db4a9c7 | 1235 | for_each_pipe(pipe) |
a70491cc | 1236 | pr_err("pipe %c stat: 0x%08x\n", |
9db4a9c7 | 1237 | pipe_name(pipe), I915_READ(PIPESTAT(pipe))); |
8a905236 JB |
1238 | /* pipestat has already been acked */ |
1239 | } | |
1240 | if (eir & I915_ERROR_INSTRUCTION) { | |
a70491cc JP |
1241 | pr_err("instruction error\n"); |
1242 | pr_err(" INSTPM: 0x%08x\n", I915_READ(INSTPM)); | |
a6c45cf0 | 1243 | if (INTEL_INFO(dev)->gen < 4) { |
8a905236 JB |
1244 | u32 ipeir = I915_READ(IPEIR); |
1245 | ||
a70491cc JP |
1246 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR)); |
1247 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR)); | |
1248 | pr_err(" INSTDONE: 0x%08x\n", I915_READ(INSTDONE)); | |
1249 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD)); | |
8a905236 | 1250 | I915_WRITE(IPEIR, ipeir); |
3143a2bf | 1251 | POSTING_READ(IPEIR); |
8a905236 JB |
1252 | } else { |
1253 | u32 ipeir = I915_READ(IPEIR_I965); | |
1254 | ||
a70491cc JP |
1255 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR_I965)); |
1256 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR_I965)); | |
1257 | pr_err(" INSTDONE: 0x%08x\n", | |
8a905236 | 1258 | I915_READ(INSTDONE_I965)); |
a70491cc JP |
1259 | pr_err(" INSTPS: 0x%08x\n", I915_READ(INSTPS)); |
1260 | pr_err(" INSTDONE1: 0x%08x\n", I915_READ(INSTDONE1)); | |
1261 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD_I965)); | |
8a905236 | 1262 | I915_WRITE(IPEIR_I965, ipeir); |
3143a2bf | 1263 | POSTING_READ(IPEIR_I965); |
8a905236 JB |
1264 | } |
1265 | } | |
1266 | ||
1267 | I915_WRITE(EIR, eir); | |
3143a2bf | 1268 | POSTING_READ(EIR); |
8a905236 JB |
1269 | eir = I915_READ(EIR); |
1270 | if (eir) { | |
1271 | /* | |
1272 | * some errors might have become stuck, | |
1273 | * mask them. | |
1274 | */ | |
1275 | DRM_ERROR("EIR stuck: 0x%08x, masking\n", eir); | |
1276 | I915_WRITE(EMR, I915_READ(EMR) | eir); | |
1277 | I915_WRITE(IIR, I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
1278 | } | |
35aed2e6 CW |
1279 | } |
1280 | ||
1281 | /** | |
1282 | * i915_handle_error - handle an error interrupt | |
1283 | * @dev: drm device | |
1284 | * | |
1285 | * Do some basic checking of regsiter state at error interrupt time and | |
1286 | * dump it to the syslog. Also call i915_capture_error_state() to make | |
1287 | * sure we get a record and make it available in debugfs. Fire a uevent | |
1288 | * so userspace knows something bad happened (should trigger collection | |
1289 | * of a ring dump etc.). | |
1290 | */ | |
527f9e90 | 1291 | void i915_handle_error(struct drm_device *dev, bool wedged) |
35aed2e6 CW |
1292 | { |
1293 | struct drm_i915_private *dev_priv = dev->dev_private; | |
b4519513 CW |
1294 | struct intel_ring_buffer *ring; |
1295 | int i; | |
35aed2e6 CW |
1296 | |
1297 | i915_capture_error_state(dev); | |
1298 | i915_report_and_clear_eir(dev); | |
8a905236 | 1299 | |
ba1234d1 | 1300 | if (wedged) { |
30dbf0c0 | 1301 | INIT_COMPLETION(dev_priv->error_completion); |
ba1234d1 BG |
1302 | atomic_set(&dev_priv->mm.wedged, 1); |
1303 | ||
11ed50ec BG |
1304 | /* |
1305 | * Wakeup waiting processes so they don't hang | |
1306 | */ | |
b4519513 CW |
1307 | for_each_ring(ring, dev_priv, i) |
1308 | wake_up_all(&ring->irq_queue); | |
11ed50ec BG |
1309 | } |
1310 | ||
9c9fe1f8 | 1311 | queue_work(dev_priv->wq, &dev_priv->error_work); |
8a905236 JB |
1312 | } |
1313 | ||
4e5359cd SF |
1314 | static void i915_pageflip_stall_check(struct drm_device *dev, int pipe) |
1315 | { | |
1316 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1317 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
1318 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
05394f39 | 1319 | struct drm_i915_gem_object *obj; |
4e5359cd SF |
1320 | struct intel_unpin_work *work; |
1321 | unsigned long flags; | |
1322 | bool stall_detected; | |
1323 | ||
1324 | /* Ignore early vblank irqs */ | |
1325 | if (intel_crtc == NULL) | |
1326 | return; | |
1327 | ||
1328 | spin_lock_irqsave(&dev->event_lock, flags); | |
1329 | work = intel_crtc->unpin_work; | |
1330 | ||
1331 | if (work == NULL || work->pending || !work->enable_stall_check) { | |
1332 | /* Either the pending flip IRQ arrived, or we're too early. Don't check */ | |
1333 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
1334 | return; | |
1335 | } | |
1336 | ||
1337 | /* Potential stall - if we see that the flip has happened, assume a missed interrupt */ | |
05394f39 | 1338 | obj = work->pending_flip_obj; |
a6c45cf0 | 1339 | if (INTEL_INFO(dev)->gen >= 4) { |
9db4a9c7 | 1340 | int dspsurf = DSPSURF(intel_crtc->plane); |
446f2545 AR |
1341 | stall_detected = I915_HI_DISPBASE(I915_READ(dspsurf)) == |
1342 | obj->gtt_offset; | |
4e5359cd | 1343 | } else { |
9db4a9c7 | 1344 | int dspaddr = DSPADDR(intel_crtc->plane); |
05394f39 | 1345 | stall_detected = I915_READ(dspaddr) == (obj->gtt_offset + |
01f2c773 | 1346 | crtc->y * crtc->fb->pitches[0] + |
4e5359cd SF |
1347 | crtc->x * crtc->fb->bits_per_pixel/8); |
1348 | } | |
1349 | ||
1350 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
1351 | ||
1352 | if (stall_detected) { | |
1353 | DRM_DEBUG_DRIVER("Pageflip stall detected\n"); | |
1354 | intel_prepare_page_flip(dev, intel_crtc->plane); | |
1355 | } | |
1356 | } | |
1357 | ||
42f52ef8 KP |
1358 | /* Called from drm generic code, passed 'crtc' which |
1359 | * we use as a pipe index | |
1360 | */ | |
f71d4af4 | 1361 | static int i915_enable_vblank(struct drm_device *dev, int pipe) |
0a3e67a4 JB |
1362 | { |
1363 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
e9d21d7f | 1364 | unsigned long irqflags; |
71e0ffa5 | 1365 | |
5eddb70b | 1366 | if (!i915_pipe_enabled(dev, pipe)) |
71e0ffa5 | 1367 | return -EINVAL; |
0a3e67a4 | 1368 | |
1ec14ad3 | 1369 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
f796cf8f | 1370 | if (INTEL_INFO(dev)->gen >= 4) |
7c463586 KP |
1371 | i915_enable_pipestat(dev_priv, pipe, |
1372 | PIPE_START_VBLANK_INTERRUPT_ENABLE); | |
e9d21d7f | 1373 | else |
7c463586 KP |
1374 | i915_enable_pipestat(dev_priv, pipe, |
1375 | PIPE_VBLANK_INTERRUPT_ENABLE); | |
8692d00e CW |
1376 | |
1377 | /* maintain vblank delivery even in deep C-states */ | |
1378 | if (dev_priv->info->gen == 3) | |
6b26c86d | 1379 | I915_WRITE(INSTPM, _MASKED_BIT_DISABLE(INSTPM_AGPBUSY_DIS)); |
1ec14ad3 | 1380 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
8692d00e | 1381 | |
0a3e67a4 JB |
1382 | return 0; |
1383 | } | |
1384 | ||
f71d4af4 | 1385 | static int ironlake_enable_vblank(struct drm_device *dev, int pipe) |
f796cf8f JB |
1386 | { |
1387 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1388 | unsigned long irqflags; | |
1389 | ||
1390 | if (!i915_pipe_enabled(dev, pipe)) | |
1391 | return -EINVAL; | |
1392 | ||
1393 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
1394 | ironlake_enable_display_irq(dev_priv, (pipe == 0) ? | |
0206e353 | 1395 | DE_PIPEA_VBLANK : DE_PIPEB_VBLANK); |
f796cf8f JB |
1396 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
1397 | ||
1398 | return 0; | |
1399 | } | |
1400 | ||
f71d4af4 | 1401 | static int ivybridge_enable_vblank(struct drm_device *dev, int pipe) |
b1f14ad0 JB |
1402 | { |
1403 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1404 | unsigned long irqflags; | |
1405 | ||
1406 | if (!i915_pipe_enabled(dev, pipe)) | |
1407 | return -EINVAL; | |
1408 | ||
1409 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
b615b57a CW |
1410 | ironlake_enable_display_irq(dev_priv, |
1411 | DE_PIPEA_VBLANK_IVB << (5 * pipe)); | |
b1f14ad0 JB |
1412 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
1413 | ||
1414 | return 0; | |
1415 | } | |
1416 | ||
7e231dbe JB |
1417 | static int valleyview_enable_vblank(struct drm_device *dev, int pipe) |
1418 | { | |
1419 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1420 | unsigned long irqflags; | |
1421 | u32 dpfl, imr; | |
1422 | ||
1423 | if (!i915_pipe_enabled(dev, pipe)) | |
1424 | return -EINVAL; | |
1425 | ||
1426 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
1427 | dpfl = I915_READ(VLV_DPFLIPSTAT); | |
1428 | imr = I915_READ(VLV_IMR); | |
1429 | if (pipe == 0) { | |
1430 | dpfl |= PIPEA_VBLANK_INT_EN; | |
1431 | imr &= ~I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT; | |
1432 | } else { | |
1433 | dpfl |= PIPEA_VBLANK_INT_EN; | |
1434 | imr &= ~I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; | |
1435 | } | |
1436 | I915_WRITE(VLV_DPFLIPSTAT, dpfl); | |
1437 | I915_WRITE(VLV_IMR, imr); | |
1438 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
1439 | ||
1440 | return 0; | |
1441 | } | |
1442 | ||
42f52ef8 KP |
1443 | /* Called from drm generic code, passed 'crtc' which |
1444 | * we use as a pipe index | |
1445 | */ | |
f71d4af4 | 1446 | static void i915_disable_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; |
0a3e67a4 | 1450 | |
1ec14ad3 | 1451 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
8692d00e | 1452 | if (dev_priv->info->gen == 3) |
6b26c86d | 1453 | I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_AGPBUSY_DIS)); |
8692d00e | 1454 | |
f796cf8f JB |
1455 | i915_disable_pipestat(dev_priv, pipe, |
1456 | PIPE_VBLANK_INTERRUPT_ENABLE | | |
1457 | PIPE_START_VBLANK_INTERRUPT_ENABLE); | |
1458 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
1459 | } | |
1460 | ||
f71d4af4 | 1461 | static void ironlake_disable_vblank(struct drm_device *dev, int pipe) |
f796cf8f JB |
1462 | { |
1463 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1464 | unsigned long irqflags; | |
1465 | ||
1466 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
1467 | ironlake_disable_display_irq(dev_priv, (pipe == 0) ? | |
0206e353 | 1468 | DE_PIPEA_VBLANK : DE_PIPEB_VBLANK); |
1ec14ad3 | 1469 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
0a3e67a4 JB |
1470 | } |
1471 | ||
f71d4af4 | 1472 | static void ivybridge_disable_vblank(struct drm_device *dev, int pipe) |
b1f14ad0 JB |
1473 | { |
1474 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1475 | unsigned long irqflags; | |
1476 | ||
1477 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
b615b57a CW |
1478 | ironlake_disable_display_irq(dev_priv, |
1479 | DE_PIPEA_VBLANK_IVB << (pipe * 5)); | |
b1f14ad0 JB |
1480 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
1481 | } | |
1482 | ||
7e231dbe JB |
1483 | static void valleyview_disable_vblank(struct drm_device *dev, int pipe) |
1484 | { | |
1485 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1486 | unsigned long irqflags; | |
1487 | u32 dpfl, imr; | |
1488 | ||
1489 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
1490 | dpfl = I915_READ(VLV_DPFLIPSTAT); | |
1491 | imr = I915_READ(VLV_IMR); | |
1492 | if (pipe == 0) { | |
1493 | dpfl &= ~PIPEA_VBLANK_INT_EN; | |
1494 | imr |= I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT; | |
1495 | } else { | |
1496 | dpfl &= ~PIPEB_VBLANK_INT_EN; | |
1497 | imr |= I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; | |
1498 | } | |
1499 | I915_WRITE(VLV_IMR, imr); | |
1500 | I915_WRITE(VLV_DPFLIPSTAT, dpfl); | |
1501 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
1502 | } | |
1503 | ||
893eead0 CW |
1504 | static u32 |
1505 | ring_last_seqno(struct intel_ring_buffer *ring) | |
852835f3 | 1506 | { |
893eead0 CW |
1507 | return list_entry(ring->request_list.prev, |
1508 | struct drm_i915_gem_request, list)->seqno; | |
1509 | } | |
1510 | ||
1511 | static bool i915_hangcheck_ring_idle(struct intel_ring_buffer *ring, bool *err) | |
1512 | { | |
1513 | if (list_empty(&ring->request_list) || | |
1514 | i915_seqno_passed(ring->get_seqno(ring), ring_last_seqno(ring))) { | |
1515 | /* Issue a wake-up to catch stuck h/w. */ | |
9574b3fe BW |
1516 | if (waitqueue_active(&ring->irq_queue)) { |
1517 | DRM_ERROR("Hangcheck timer elapsed... %s idle\n", | |
1518 | ring->name); | |
893eead0 CW |
1519 | wake_up_all(&ring->irq_queue); |
1520 | *err = true; | |
1521 | } | |
1522 | return true; | |
1523 | } | |
1524 | return false; | |
f65d9421 BG |
1525 | } |
1526 | ||
1ec14ad3 CW |
1527 | static bool kick_ring(struct intel_ring_buffer *ring) |
1528 | { | |
1529 | struct drm_device *dev = ring->dev; | |
1530 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1531 | u32 tmp = I915_READ_CTL(ring); | |
1532 | if (tmp & RING_WAIT) { | |
1533 | DRM_ERROR("Kicking stuck wait on %s\n", | |
1534 | ring->name); | |
1535 | I915_WRITE_CTL(ring, tmp); | |
1536 | return true; | |
1537 | } | |
1ec14ad3 CW |
1538 | return false; |
1539 | } | |
1540 | ||
d1e61e7f CW |
1541 | static bool i915_hangcheck_hung(struct drm_device *dev) |
1542 | { | |
1543 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1544 | ||
1545 | if (dev_priv->hangcheck_count++ > 1) { | |
b4519513 CW |
1546 | bool hung = true; |
1547 | ||
d1e61e7f CW |
1548 | DRM_ERROR("Hangcheck timer elapsed... GPU hung\n"); |
1549 | i915_handle_error(dev, true); | |
1550 | ||
1551 | if (!IS_GEN2(dev)) { | |
b4519513 CW |
1552 | struct intel_ring_buffer *ring; |
1553 | int i; | |
1554 | ||
d1e61e7f CW |
1555 | /* Is the chip hanging on a WAIT_FOR_EVENT? |
1556 | * If so we can simply poke the RB_WAIT bit | |
1557 | * and break the hang. This should work on | |
1558 | * all but the second generation chipsets. | |
1559 | */ | |
b4519513 CW |
1560 | for_each_ring(ring, dev_priv, i) |
1561 | hung &= !kick_ring(ring); | |
d1e61e7f CW |
1562 | } |
1563 | ||
b4519513 | 1564 | return hung; |
d1e61e7f CW |
1565 | } |
1566 | ||
1567 | return false; | |
1568 | } | |
1569 | ||
f65d9421 BG |
1570 | /** |
1571 | * This is called when the chip hasn't reported back with completed | |
1572 | * batchbuffers in a long time. The first time this is called we simply record | |
1573 | * ACTHD. If ACTHD hasn't changed by the time the hangcheck timer elapses | |
1574 | * again, we assume the chip is wedged and try to fix it. | |
1575 | */ | |
1576 | void i915_hangcheck_elapsed(unsigned long data) | |
1577 | { | |
1578 | struct drm_device *dev = (struct drm_device *)data; | |
1579 | drm_i915_private_t *dev_priv = dev->dev_private; | |
b4519513 CW |
1580 | uint32_t acthd[I915_NUM_RINGS], instdone, instdone1; |
1581 | struct intel_ring_buffer *ring; | |
1582 | bool err = false, idle; | |
1583 | int i; | |
893eead0 | 1584 | |
3e0dc6b0 BW |
1585 | if (!i915_enable_hangcheck) |
1586 | return; | |
1587 | ||
b4519513 CW |
1588 | memset(acthd, 0, sizeof(acthd)); |
1589 | idle = true; | |
1590 | for_each_ring(ring, dev_priv, i) { | |
1591 | idle &= i915_hangcheck_ring_idle(ring, &err); | |
1592 | acthd[i] = intel_ring_get_active_head(ring); | |
1593 | } | |
1594 | ||
893eead0 | 1595 | /* If all work is done then ACTHD clearly hasn't advanced. */ |
b4519513 | 1596 | if (idle) { |
d1e61e7f CW |
1597 | if (err) { |
1598 | if (i915_hangcheck_hung(dev)) | |
1599 | return; | |
1600 | ||
893eead0 | 1601 | goto repeat; |
d1e61e7f CW |
1602 | } |
1603 | ||
1604 | dev_priv->hangcheck_count = 0; | |
893eead0 CW |
1605 | return; |
1606 | } | |
b9201c14 | 1607 | |
a6c45cf0 | 1608 | if (INTEL_INFO(dev)->gen < 4) { |
cbb465e7 CW |
1609 | instdone = I915_READ(INSTDONE); |
1610 | instdone1 = 0; | |
1611 | } else { | |
cbb465e7 CW |
1612 | instdone = I915_READ(INSTDONE_I965); |
1613 | instdone1 = I915_READ(INSTDONE1); | |
1614 | } | |
b4519513 CW |
1615 | |
1616 | if (memcmp(dev_priv->last_acthd, acthd, sizeof(acthd)) == 0 && | |
cbb465e7 CW |
1617 | dev_priv->last_instdone == instdone && |
1618 | dev_priv->last_instdone1 == instdone1) { | |
d1e61e7f | 1619 | if (i915_hangcheck_hung(dev)) |
cbb465e7 | 1620 | return; |
cbb465e7 CW |
1621 | } else { |
1622 | dev_priv->hangcheck_count = 0; | |
1623 | ||
b4519513 | 1624 | memcpy(dev_priv->last_acthd, acthd, sizeof(acthd)); |
cbb465e7 CW |
1625 | dev_priv->last_instdone = instdone; |
1626 | dev_priv->last_instdone1 = instdone1; | |
1627 | } | |
f65d9421 | 1628 | |
893eead0 | 1629 | repeat: |
f65d9421 | 1630 | /* Reset timer case chip hangs without another request being added */ |
b3b079db CW |
1631 | mod_timer(&dev_priv->hangcheck_timer, |
1632 | jiffies + msecs_to_jiffies(DRM_I915_HANGCHECK_PERIOD)); | |
f65d9421 BG |
1633 | } |
1634 | ||
1da177e4 LT |
1635 | /* drm_dma.h hooks |
1636 | */ | |
f71d4af4 | 1637 | static void ironlake_irq_preinstall(struct drm_device *dev) |
036a4a7d ZW |
1638 | { |
1639 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1640 | ||
4697995b JB |
1641 | atomic_set(&dev_priv->irq_received, 0); |
1642 | ||
4697995b | 1643 | |
036a4a7d | 1644 | I915_WRITE(HWSTAM, 0xeffe); |
bdfcdb63 | 1645 | |
036a4a7d ZW |
1646 | /* XXX hotplug from PCH */ |
1647 | ||
1648 | I915_WRITE(DEIMR, 0xffffffff); | |
1649 | I915_WRITE(DEIER, 0x0); | |
3143a2bf | 1650 | POSTING_READ(DEIER); |
036a4a7d ZW |
1651 | |
1652 | /* and GT */ | |
1653 | I915_WRITE(GTIMR, 0xffffffff); | |
1654 | I915_WRITE(GTIER, 0x0); | |
3143a2bf | 1655 | POSTING_READ(GTIER); |
c650156a ZW |
1656 | |
1657 | /* south display irq */ | |
1658 | I915_WRITE(SDEIMR, 0xffffffff); | |
1659 | I915_WRITE(SDEIER, 0x0); | |
3143a2bf | 1660 | POSTING_READ(SDEIER); |
036a4a7d ZW |
1661 | } |
1662 | ||
7e231dbe JB |
1663 | static void valleyview_irq_preinstall(struct drm_device *dev) |
1664 | { | |
1665 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1666 | int pipe; | |
1667 | ||
1668 | atomic_set(&dev_priv->irq_received, 0); | |
1669 | ||
7e231dbe JB |
1670 | /* VLV magic */ |
1671 | I915_WRITE(VLV_IMR, 0); | |
1672 | I915_WRITE(RING_IMR(RENDER_RING_BASE), 0); | |
1673 | I915_WRITE(RING_IMR(GEN6_BSD_RING_BASE), 0); | |
1674 | I915_WRITE(RING_IMR(BLT_RING_BASE), 0); | |
1675 | ||
7e231dbe JB |
1676 | /* and GT */ |
1677 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
1678 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
1679 | I915_WRITE(GTIMR, 0xffffffff); | |
1680 | I915_WRITE(GTIER, 0x0); | |
1681 | POSTING_READ(GTIER); | |
1682 | ||
1683 | I915_WRITE(DPINVGTT, 0xff); | |
1684 | ||
1685 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
1686 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
1687 | for_each_pipe(pipe) | |
1688 | I915_WRITE(PIPESTAT(pipe), 0xffff); | |
1689 | I915_WRITE(VLV_IIR, 0xffffffff); | |
1690 | I915_WRITE(VLV_IMR, 0xffffffff); | |
1691 | I915_WRITE(VLV_IER, 0x0); | |
1692 | POSTING_READ(VLV_IER); | |
1693 | } | |
1694 | ||
7fe0b973 KP |
1695 | /* |
1696 | * Enable digital hotplug on the PCH, and configure the DP short pulse | |
1697 | * duration to 2ms (which is the minimum in the Display Port spec) | |
1698 | * | |
1699 | * This register is the same on all known PCH chips. | |
1700 | */ | |
1701 | ||
1702 | static void ironlake_enable_pch_hotplug(struct drm_device *dev) | |
1703 | { | |
1704 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1705 | u32 hotplug; | |
1706 | ||
1707 | hotplug = I915_READ(PCH_PORT_HOTPLUG); | |
1708 | hotplug &= ~(PORTD_PULSE_DURATION_MASK|PORTC_PULSE_DURATION_MASK|PORTB_PULSE_DURATION_MASK); | |
1709 | hotplug |= PORTD_HOTPLUG_ENABLE | PORTD_PULSE_DURATION_2ms; | |
1710 | hotplug |= PORTC_HOTPLUG_ENABLE | PORTC_PULSE_DURATION_2ms; | |
1711 | hotplug |= PORTB_HOTPLUG_ENABLE | PORTB_PULSE_DURATION_2ms; | |
1712 | I915_WRITE(PCH_PORT_HOTPLUG, hotplug); | |
1713 | } | |
1714 | ||
f71d4af4 | 1715 | static int ironlake_irq_postinstall(struct drm_device *dev) |
036a4a7d ZW |
1716 | { |
1717 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1718 | /* enable kind of interrupts always enabled */ | |
013d5aa2 JB |
1719 | u32 display_mask = DE_MASTER_IRQ_CONTROL | DE_GSE | DE_PCH_EVENT | |
1720 | DE_PLANEA_FLIP_DONE | DE_PLANEB_FLIP_DONE; | |
1ec14ad3 | 1721 | u32 render_irqs; |
2d7b8366 | 1722 | u32 hotplug_mask; |
036a4a7d | 1723 | |
1ec14ad3 | 1724 | dev_priv->irq_mask = ~display_mask; |
036a4a7d ZW |
1725 | |
1726 | /* should always can generate irq */ | |
1727 | I915_WRITE(DEIIR, I915_READ(DEIIR)); | |
1ec14ad3 CW |
1728 | I915_WRITE(DEIMR, dev_priv->irq_mask); |
1729 | I915_WRITE(DEIER, display_mask | DE_PIPEA_VBLANK | DE_PIPEB_VBLANK); | |
3143a2bf | 1730 | POSTING_READ(DEIER); |
036a4a7d | 1731 | |
1ec14ad3 | 1732 | dev_priv->gt_irq_mask = ~0; |
036a4a7d ZW |
1733 | |
1734 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
1ec14ad3 | 1735 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); |
881f47b6 | 1736 | |
1ec14ad3 CW |
1737 | if (IS_GEN6(dev)) |
1738 | render_irqs = | |
1739 | GT_USER_INTERRUPT | | |
e2a1e2f0 BW |
1740 | GEN6_BSD_USER_INTERRUPT | |
1741 | GEN6_BLITTER_USER_INTERRUPT; | |
1ec14ad3 CW |
1742 | else |
1743 | render_irqs = | |
88f23b8f | 1744 | GT_USER_INTERRUPT | |
c6df541c | 1745 | GT_PIPE_NOTIFY | |
1ec14ad3 CW |
1746 | GT_BSD_USER_INTERRUPT; |
1747 | I915_WRITE(GTIER, render_irqs); | |
3143a2bf | 1748 | POSTING_READ(GTIER); |
036a4a7d | 1749 | |
2d7b8366 | 1750 | if (HAS_PCH_CPT(dev)) { |
9035a97a CW |
1751 | hotplug_mask = (SDE_CRT_HOTPLUG_CPT | |
1752 | SDE_PORTB_HOTPLUG_CPT | | |
1753 | SDE_PORTC_HOTPLUG_CPT | | |
1754 | SDE_PORTD_HOTPLUG_CPT); | |
2d7b8366 | 1755 | } else { |
9035a97a CW |
1756 | hotplug_mask = (SDE_CRT_HOTPLUG | |
1757 | SDE_PORTB_HOTPLUG | | |
1758 | SDE_PORTC_HOTPLUG | | |
1759 | SDE_PORTD_HOTPLUG | | |
1760 | SDE_AUX_MASK); | |
2d7b8366 YL |
1761 | } |
1762 | ||
1ec14ad3 | 1763 | dev_priv->pch_irq_mask = ~hotplug_mask; |
c650156a ZW |
1764 | |
1765 | I915_WRITE(SDEIIR, I915_READ(SDEIIR)); | |
1ec14ad3 CW |
1766 | I915_WRITE(SDEIMR, dev_priv->pch_irq_mask); |
1767 | I915_WRITE(SDEIER, hotplug_mask); | |
3143a2bf | 1768 | POSTING_READ(SDEIER); |
c650156a | 1769 | |
7fe0b973 KP |
1770 | ironlake_enable_pch_hotplug(dev); |
1771 | ||
f97108d1 JB |
1772 | if (IS_IRONLAKE_M(dev)) { |
1773 | /* Clear & enable PCU event interrupts */ | |
1774 | I915_WRITE(DEIIR, DE_PCU_EVENT); | |
1775 | I915_WRITE(DEIER, I915_READ(DEIER) | DE_PCU_EVENT); | |
1776 | ironlake_enable_display_irq(dev_priv, DE_PCU_EVENT); | |
1777 | } | |
1778 | ||
036a4a7d ZW |
1779 | return 0; |
1780 | } | |
1781 | ||
f71d4af4 | 1782 | static int ivybridge_irq_postinstall(struct drm_device *dev) |
b1f14ad0 JB |
1783 | { |
1784 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1785 | /* enable kind of interrupts always enabled */ | |
b615b57a CW |
1786 | u32 display_mask = |
1787 | DE_MASTER_IRQ_CONTROL | DE_GSE_IVB | DE_PCH_EVENT_IVB | | |
1788 | DE_PLANEC_FLIP_DONE_IVB | | |
1789 | DE_PLANEB_FLIP_DONE_IVB | | |
1790 | DE_PLANEA_FLIP_DONE_IVB; | |
b1f14ad0 JB |
1791 | u32 render_irqs; |
1792 | u32 hotplug_mask; | |
1793 | ||
b1f14ad0 JB |
1794 | dev_priv->irq_mask = ~display_mask; |
1795 | ||
1796 | /* should always can generate irq */ | |
1797 | I915_WRITE(DEIIR, I915_READ(DEIIR)); | |
1798 | I915_WRITE(DEIMR, dev_priv->irq_mask); | |
b615b57a CW |
1799 | I915_WRITE(DEIER, |
1800 | display_mask | | |
1801 | DE_PIPEC_VBLANK_IVB | | |
1802 | DE_PIPEB_VBLANK_IVB | | |
1803 | DE_PIPEA_VBLANK_IVB); | |
b1f14ad0 JB |
1804 | POSTING_READ(DEIER); |
1805 | ||
1806 | dev_priv->gt_irq_mask = ~0; | |
1807 | ||
1808 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
1809 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); | |
1810 | ||
e2a1e2f0 BW |
1811 | render_irqs = GT_USER_INTERRUPT | GEN6_BSD_USER_INTERRUPT | |
1812 | GEN6_BLITTER_USER_INTERRUPT; | |
b1f14ad0 JB |
1813 | I915_WRITE(GTIER, render_irqs); |
1814 | POSTING_READ(GTIER); | |
1815 | ||
1816 | hotplug_mask = (SDE_CRT_HOTPLUG_CPT | | |
1817 | SDE_PORTB_HOTPLUG_CPT | | |
1818 | SDE_PORTC_HOTPLUG_CPT | | |
1819 | SDE_PORTD_HOTPLUG_CPT); | |
1820 | dev_priv->pch_irq_mask = ~hotplug_mask; | |
1821 | ||
1822 | I915_WRITE(SDEIIR, I915_READ(SDEIIR)); | |
1823 | I915_WRITE(SDEIMR, dev_priv->pch_irq_mask); | |
1824 | I915_WRITE(SDEIER, hotplug_mask); | |
1825 | POSTING_READ(SDEIER); | |
1826 | ||
7fe0b973 KP |
1827 | ironlake_enable_pch_hotplug(dev); |
1828 | ||
b1f14ad0 JB |
1829 | return 0; |
1830 | } | |
1831 | ||
7e231dbe JB |
1832 | static int valleyview_irq_postinstall(struct drm_device *dev) |
1833 | { | |
1834 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1835 | u32 render_irqs; | |
1836 | u32 enable_mask; | |
1837 | u32 hotplug_en = I915_READ(PORT_HOTPLUG_EN); | |
1838 | u16 msid; | |
1839 | ||
1840 | enable_mask = I915_DISPLAY_PORT_INTERRUPT; | |
1841 | enable_mask |= I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT | | |
1842 | I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; | |
1843 | ||
1844 | dev_priv->irq_mask = ~enable_mask; | |
1845 | ||
7e231dbe JB |
1846 | dev_priv->pipestat[0] = 0; |
1847 | dev_priv->pipestat[1] = 0; | |
1848 | ||
7e231dbe JB |
1849 | /* Hack for broken MSIs on VLV */ |
1850 | pci_write_config_dword(dev_priv->dev->pdev, 0x94, 0xfee00000); | |
1851 | pci_read_config_word(dev->pdev, 0x98, &msid); | |
1852 | msid &= 0xff; /* mask out delivery bits */ | |
1853 | msid |= (1<<14); | |
1854 | pci_write_config_word(dev_priv->dev->pdev, 0x98, msid); | |
1855 | ||
1856 | I915_WRITE(VLV_IMR, dev_priv->irq_mask); | |
1857 | I915_WRITE(VLV_IER, enable_mask); | |
1858 | I915_WRITE(VLV_IIR, 0xffffffff); | |
1859 | I915_WRITE(PIPESTAT(0), 0xffff); | |
1860 | I915_WRITE(PIPESTAT(1), 0xffff); | |
1861 | POSTING_READ(VLV_IER); | |
1862 | ||
1863 | I915_WRITE(VLV_IIR, 0xffffffff); | |
1864 | I915_WRITE(VLV_IIR, 0xffffffff); | |
1865 | ||
1866 | render_irqs = GT_GEN6_BLT_FLUSHDW_NOTIFY_INTERRUPT | | |
1867 | GT_GEN6_BLT_CS_ERROR_INTERRUPT | | |
e2a1e2f0 | 1868 | GT_GEN6_BLT_USER_INTERRUPT | |
7e231dbe JB |
1869 | GT_GEN6_BSD_USER_INTERRUPT | |
1870 | GT_GEN6_BSD_CS_ERROR_INTERRUPT | | |
1871 | GT_GEN7_L3_PARITY_ERROR_INTERRUPT | | |
1872 | GT_PIPE_NOTIFY | | |
1873 | GT_RENDER_CS_ERROR_INTERRUPT | | |
1874 | GT_SYNC_STATUS | | |
1875 | GT_USER_INTERRUPT; | |
1876 | ||
1877 | dev_priv->gt_irq_mask = ~render_irqs; | |
1878 | ||
1879 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
1880 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
1881 | I915_WRITE(GTIMR, 0); | |
1882 | I915_WRITE(GTIER, render_irqs); | |
1883 | POSTING_READ(GTIER); | |
1884 | ||
1885 | /* ack & enable invalid PTE error interrupts */ | |
1886 | #if 0 /* FIXME: add support to irq handler for checking these bits */ | |
1887 | I915_WRITE(DPINVGTT, DPINVGTT_STATUS_MASK); | |
1888 | I915_WRITE(DPINVGTT, DPINVGTT_EN_MASK); | |
1889 | #endif | |
1890 | ||
1891 | I915_WRITE(VLV_MASTER_IER, MASTER_INTERRUPT_ENABLE); | |
1892 | #if 0 /* FIXME: check register definitions; some have moved */ | |
1893 | /* Note HDMI and DP share bits */ | |
1894 | if (dev_priv->hotplug_supported_mask & HDMIB_HOTPLUG_INT_STATUS) | |
1895 | hotplug_en |= HDMIB_HOTPLUG_INT_EN; | |
1896 | if (dev_priv->hotplug_supported_mask & HDMIC_HOTPLUG_INT_STATUS) | |
1897 | hotplug_en |= HDMIC_HOTPLUG_INT_EN; | |
1898 | if (dev_priv->hotplug_supported_mask & HDMID_HOTPLUG_INT_STATUS) | |
1899 | hotplug_en |= HDMID_HOTPLUG_INT_EN; | |
1900 | if (dev_priv->hotplug_supported_mask & SDVOC_HOTPLUG_INT_STATUS) | |
1901 | hotplug_en |= SDVOC_HOTPLUG_INT_EN; | |
1902 | if (dev_priv->hotplug_supported_mask & SDVOB_HOTPLUG_INT_STATUS) | |
1903 | hotplug_en |= SDVOB_HOTPLUG_INT_EN; | |
1904 | if (dev_priv->hotplug_supported_mask & CRT_HOTPLUG_INT_STATUS) { | |
1905 | hotplug_en |= CRT_HOTPLUG_INT_EN; | |
1906 | hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50; | |
1907 | } | |
1908 | #endif | |
1909 | ||
1910 | I915_WRITE(PORT_HOTPLUG_EN, hotplug_en); | |
1911 | ||
1912 | return 0; | |
1913 | } | |
1914 | ||
7e231dbe JB |
1915 | static void valleyview_irq_uninstall(struct drm_device *dev) |
1916 | { | |
1917 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1918 | int pipe; | |
1919 | ||
1920 | if (!dev_priv) | |
1921 | return; | |
1922 | ||
7e231dbe JB |
1923 | for_each_pipe(pipe) |
1924 | I915_WRITE(PIPESTAT(pipe), 0xffff); | |
1925 | ||
1926 | I915_WRITE(HWSTAM, 0xffffffff); | |
1927 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
1928 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
1929 | for_each_pipe(pipe) | |
1930 | I915_WRITE(PIPESTAT(pipe), 0xffff); | |
1931 | I915_WRITE(VLV_IIR, 0xffffffff); | |
1932 | I915_WRITE(VLV_IMR, 0xffffffff); | |
1933 | I915_WRITE(VLV_IER, 0x0); | |
1934 | POSTING_READ(VLV_IER); | |
1935 | } | |
1936 | ||
f71d4af4 | 1937 | static void ironlake_irq_uninstall(struct drm_device *dev) |
036a4a7d ZW |
1938 | { |
1939 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
4697995b JB |
1940 | |
1941 | if (!dev_priv) | |
1942 | return; | |
1943 | ||
036a4a7d ZW |
1944 | I915_WRITE(HWSTAM, 0xffffffff); |
1945 | ||
1946 | I915_WRITE(DEIMR, 0xffffffff); | |
1947 | I915_WRITE(DEIER, 0x0); | |
1948 | I915_WRITE(DEIIR, I915_READ(DEIIR)); | |
1949 | ||
1950 | I915_WRITE(GTIMR, 0xffffffff); | |
1951 | I915_WRITE(GTIER, 0x0); | |
1952 | I915_WRITE(GTIIR, I915_READ(GTIIR)); | |
192aac1f KP |
1953 | |
1954 | I915_WRITE(SDEIMR, 0xffffffff); | |
1955 | I915_WRITE(SDEIER, 0x0); | |
1956 | I915_WRITE(SDEIIR, I915_READ(SDEIIR)); | |
036a4a7d ZW |
1957 | } |
1958 | ||
a266c7d5 | 1959 | static void i8xx_irq_preinstall(struct drm_device * dev) |
1da177e4 LT |
1960 | { |
1961 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
9db4a9c7 | 1962 | int pipe; |
91e3738e | 1963 | |
a266c7d5 | 1964 | atomic_set(&dev_priv->irq_received, 0); |
5ca58282 | 1965 | |
9db4a9c7 JB |
1966 | for_each_pipe(pipe) |
1967 | I915_WRITE(PIPESTAT(pipe), 0); | |
a266c7d5 CW |
1968 | I915_WRITE16(IMR, 0xffff); |
1969 | I915_WRITE16(IER, 0x0); | |
1970 | POSTING_READ16(IER); | |
c2798b19 CW |
1971 | } |
1972 | ||
1973 | static int i8xx_irq_postinstall(struct drm_device *dev) | |
1974 | { | |
1975 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
1976 | ||
c2798b19 CW |
1977 | dev_priv->pipestat[0] = 0; |
1978 | dev_priv->pipestat[1] = 0; | |
1979 | ||
1980 | I915_WRITE16(EMR, | |
1981 | ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH)); | |
1982 | ||
1983 | /* Unmask the interrupts that we always want on. */ | |
1984 | dev_priv->irq_mask = | |
1985 | ~(I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
1986 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
1987 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
1988 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | | |
1989 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
1990 | I915_WRITE16(IMR, dev_priv->irq_mask); | |
1991 | ||
1992 | I915_WRITE16(IER, | |
1993 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
1994 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
1995 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT | | |
1996 | I915_USER_INTERRUPT); | |
1997 | POSTING_READ16(IER); | |
1998 | ||
1999 | return 0; | |
2000 | } | |
2001 | ||
2002 | static irqreturn_t i8xx_irq_handler(DRM_IRQ_ARGS) | |
2003 | { | |
2004 | struct drm_device *dev = (struct drm_device *) arg; | |
2005 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
c2798b19 CW |
2006 | u16 iir, new_iir; |
2007 | u32 pipe_stats[2]; | |
2008 | unsigned long irqflags; | |
2009 | int irq_received; | |
2010 | int pipe; | |
2011 | u16 flip_mask = | |
2012 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
2013 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; | |
2014 | ||
2015 | atomic_inc(&dev_priv->irq_received); | |
2016 | ||
2017 | iir = I915_READ16(IIR); | |
2018 | if (iir == 0) | |
2019 | return IRQ_NONE; | |
2020 | ||
2021 | while (iir & ~flip_mask) { | |
2022 | /* Can't rely on pipestat interrupt bit in iir as it might | |
2023 | * have been cleared after the pipestat interrupt was received. | |
2024 | * It doesn't set the bit in iir again, but it still produces | |
2025 | * interrupts (for non-MSI). | |
2026 | */ | |
2027 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
2028 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) | |
2029 | i915_handle_error(dev, false); | |
2030 | ||
2031 | for_each_pipe(pipe) { | |
2032 | int reg = PIPESTAT(pipe); | |
2033 | pipe_stats[pipe] = I915_READ(reg); | |
2034 | ||
2035 | /* | |
2036 | * Clear the PIPE*STAT regs before the IIR | |
2037 | */ | |
2038 | if (pipe_stats[pipe] & 0x8000ffff) { | |
2039 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) | |
2040 | DRM_DEBUG_DRIVER("pipe %c underrun\n", | |
2041 | pipe_name(pipe)); | |
2042 | I915_WRITE(reg, pipe_stats[pipe]); | |
2043 | irq_received = 1; | |
2044 | } | |
2045 | } | |
2046 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
2047 | ||
2048 | I915_WRITE16(IIR, iir & ~flip_mask); | |
2049 | new_iir = I915_READ16(IIR); /* Flush posted writes */ | |
2050 | ||
d05c617e | 2051 | i915_update_dri1_breadcrumb(dev); |
c2798b19 CW |
2052 | |
2053 | if (iir & I915_USER_INTERRUPT) | |
2054 | notify_ring(dev, &dev_priv->ring[RCS]); | |
2055 | ||
2056 | if (pipe_stats[0] & PIPE_VBLANK_INTERRUPT_STATUS && | |
2057 | drm_handle_vblank(dev, 0)) { | |
2058 | if (iir & I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT) { | |
2059 | intel_prepare_page_flip(dev, 0); | |
2060 | intel_finish_page_flip(dev, 0); | |
2061 | flip_mask &= ~I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT; | |
2062 | } | |
2063 | } | |
2064 | ||
2065 | if (pipe_stats[1] & PIPE_VBLANK_INTERRUPT_STATUS && | |
2066 | drm_handle_vblank(dev, 1)) { | |
2067 | if (iir & I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT) { | |
2068 | intel_prepare_page_flip(dev, 1); | |
2069 | intel_finish_page_flip(dev, 1); | |
2070 | flip_mask &= ~I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; | |
2071 | } | |
2072 | } | |
2073 | ||
2074 | iir = new_iir; | |
2075 | } | |
2076 | ||
2077 | return IRQ_HANDLED; | |
2078 | } | |
2079 | ||
2080 | static void i8xx_irq_uninstall(struct drm_device * dev) | |
2081 | { | |
2082 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2083 | int pipe; | |
2084 | ||
c2798b19 CW |
2085 | for_each_pipe(pipe) { |
2086 | /* Clear enable bits; then clear status bits */ | |
2087 | I915_WRITE(PIPESTAT(pipe), 0); | |
2088 | I915_WRITE(PIPESTAT(pipe), I915_READ(PIPESTAT(pipe))); | |
2089 | } | |
2090 | I915_WRITE16(IMR, 0xffff); | |
2091 | I915_WRITE16(IER, 0x0); | |
2092 | I915_WRITE16(IIR, I915_READ16(IIR)); | |
2093 | } | |
2094 | ||
a266c7d5 CW |
2095 | static void i915_irq_preinstall(struct drm_device * dev) |
2096 | { | |
2097 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2098 | int pipe; | |
2099 | ||
2100 | atomic_set(&dev_priv->irq_received, 0); | |
2101 | ||
2102 | if (I915_HAS_HOTPLUG(dev)) { | |
2103 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
2104 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
2105 | } | |
2106 | ||
00d98ebd | 2107 | I915_WRITE16(HWSTAM, 0xeffe); |
a266c7d5 CW |
2108 | for_each_pipe(pipe) |
2109 | I915_WRITE(PIPESTAT(pipe), 0); | |
2110 | I915_WRITE(IMR, 0xffffffff); | |
2111 | I915_WRITE(IER, 0x0); | |
2112 | POSTING_READ(IER); | |
2113 | } | |
2114 | ||
2115 | static int i915_irq_postinstall(struct drm_device *dev) | |
2116 | { | |
2117 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
38bde180 | 2118 | u32 enable_mask; |
a266c7d5 | 2119 | |
a266c7d5 CW |
2120 | dev_priv->pipestat[0] = 0; |
2121 | dev_priv->pipestat[1] = 0; | |
2122 | ||
38bde180 CW |
2123 | I915_WRITE(EMR, ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH)); |
2124 | ||
2125 | /* Unmask the interrupts that we always want on. */ | |
2126 | dev_priv->irq_mask = | |
2127 | ~(I915_ASLE_INTERRUPT | | |
2128 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
2129 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
2130 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
2131 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | | |
2132 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
2133 | ||
2134 | enable_mask = | |
2135 | I915_ASLE_INTERRUPT | | |
2136 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | | |
2137 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
2138 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT | | |
2139 | I915_USER_INTERRUPT; | |
2140 | ||
a266c7d5 CW |
2141 | if (I915_HAS_HOTPLUG(dev)) { |
2142 | /* Enable in IER... */ | |
2143 | enable_mask |= I915_DISPLAY_PORT_INTERRUPT; | |
2144 | /* and unmask in IMR */ | |
2145 | dev_priv->irq_mask &= ~I915_DISPLAY_PORT_INTERRUPT; | |
2146 | } | |
2147 | ||
a266c7d5 CW |
2148 | I915_WRITE(IMR, dev_priv->irq_mask); |
2149 | I915_WRITE(IER, enable_mask); | |
2150 | POSTING_READ(IER); | |
2151 | ||
2152 | if (I915_HAS_HOTPLUG(dev)) { | |
2153 | u32 hotplug_en = I915_READ(PORT_HOTPLUG_EN); | |
2154 | ||
a266c7d5 CW |
2155 | if (dev_priv->hotplug_supported_mask & HDMIB_HOTPLUG_INT_STATUS) |
2156 | hotplug_en |= HDMIB_HOTPLUG_INT_EN; | |
2157 | if (dev_priv->hotplug_supported_mask & HDMIC_HOTPLUG_INT_STATUS) | |
2158 | hotplug_en |= HDMIC_HOTPLUG_INT_EN; | |
2159 | if (dev_priv->hotplug_supported_mask & HDMID_HOTPLUG_INT_STATUS) | |
2160 | hotplug_en |= HDMID_HOTPLUG_INT_EN; | |
2161 | if (dev_priv->hotplug_supported_mask & SDVOC_HOTPLUG_INT_STATUS) | |
2162 | hotplug_en |= SDVOC_HOTPLUG_INT_EN; | |
2163 | if (dev_priv->hotplug_supported_mask & SDVOB_HOTPLUG_INT_STATUS) | |
2164 | hotplug_en |= SDVOB_HOTPLUG_INT_EN; | |
2165 | if (dev_priv->hotplug_supported_mask & CRT_HOTPLUG_INT_STATUS) { | |
2166 | hotplug_en |= CRT_HOTPLUG_INT_EN; | |
a266c7d5 CW |
2167 | hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50; |
2168 | } | |
2169 | ||
2170 | /* Ignore TV since it's buggy */ | |
2171 | ||
2172 | I915_WRITE(PORT_HOTPLUG_EN, hotplug_en); | |
2173 | } | |
2174 | ||
2175 | intel_opregion_enable_asle(dev); | |
2176 | ||
2177 | return 0; | |
2178 | } | |
2179 | ||
2180 | static irqreturn_t i915_irq_handler(DRM_IRQ_ARGS) | |
2181 | { | |
2182 | struct drm_device *dev = (struct drm_device *) arg; | |
2183 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
8291ee90 | 2184 | u32 iir, new_iir, pipe_stats[I915_MAX_PIPES]; |
a266c7d5 | 2185 | unsigned long irqflags; |
38bde180 CW |
2186 | u32 flip_mask = |
2187 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
2188 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; | |
2189 | u32 flip[2] = { | |
2190 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT, | |
2191 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | |
2192 | }; | |
2193 | int pipe, ret = IRQ_NONE; | |
a266c7d5 CW |
2194 | |
2195 | atomic_inc(&dev_priv->irq_received); | |
2196 | ||
2197 | iir = I915_READ(IIR); | |
38bde180 CW |
2198 | do { |
2199 | bool irq_received = (iir & ~flip_mask) != 0; | |
8291ee90 | 2200 | bool blc_event = false; |
a266c7d5 CW |
2201 | |
2202 | /* Can't rely on pipestat interrupt bit in iir as it might | |
2203 | * have been cleared after the pipestat interrupt was received. | |
2204 | * It doesn't set the bit in iir again, but it still produces | |
2205 | * interrupts (for non-MSI). | |
2206 | */ | |
2207 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
2208 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) | |
2209 | i915_handle_error(dev, false); | |
2210 | ||
2211 | for_each_pipe(pipe) { | |
2212 | int reg = PIPESTAT(pipe); | |
2213 | pipe_stats[pipe] = I915_READ(reg); | |
2214 | ||
38bde180 | 2215 | /* Clear the PIPE*STAT regs before the IIR */ |
a266c7d5 CW |
2216 | if (pipe_stats[pipe] & 0x8000ffff) { |
2217 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) | |
2218 | DRM_DEBUG_DRIVER("pipe %c underrun\n", | |
2219 | pipe_name(pipe)); | |
2220 | I915_WRITE(reg, pipe_stats[pipe]); | |
38bde180 | 2221 | irq_received = true; |
a266c7d5 CW |
2222 | } |
2223 | } | |
2224 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
2225 | ||
2226 | if (!irq_received) | |
2227 | break; | |
2228 | ||
a266c7d5 CW |
2229 | /* Consume port. Then clear IIR or we'll miss events */ |
2230 | if ((I915_HAS_HOTPLUG(dev)) && | |
2231 | (iir & I915_DISPLAY_PORT_INTERRUPT)) { | |
2232 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); | |
2233 | ||
2234 | DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", | |
2235 | hotplug_status); | |
2236 | if (hotplug_status & dev_priv->hotplug_supported_mask) | |
2237 | queue_work(dev_priv->wq, | |
2238 | &dev_priv->hotplug_work); | |
2239 | ||
2240 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); | |
38bde180 | 2241 | POSTING_READ(PORT_HOTPLUG_STAT); |
a266c7d5 CW |
2242 | } |
2243 | ||
38bde180 | 2244 | I915_WRITE(IIR, iir & ~flip_mask); |
a266c7d5 CW |
2245 | new_iir = I915_READ(IIR); /* Flush posted writes */ |
2246 | ||
a266c7d5 CW |
2247 | if (iir & I915_USER_INTERRUPT) |
2248 | notify_ring(dev, &dev_priv->ring[RCS]); | |
a266c7d5 | 2249 | |
a266c7d5 | 2250 | for_each_pipe(pipe) { |
38bde180 CW |
2251 | int plane = pipe; |
2252 | if (IS_MOBILE(dev)) | |
2253 | plane = !plane; | |
8291ee90 | 2254 | if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS && |
a266c7d5 | 2255 | drm_handle_vblank(dev, pipe)) { |
38bde180 CW |
2256 | if (iir & flip[plane]) { |
2257 | intel_prepare_page_flip(dev, plane); | |
2258 | intel_finish_page_flip(dev, pipe); | |
2259 | flip_mask &= ~flip[plane]; | |
2260 | } | |
a266c7d5 CW |
2261 | } |
2262 | ||
2263 | if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) | |
2264 | blc_event = true; | |
2265 | } | |
2266 | ||
a266c7d5 CW |
2267 | if (blc_event || (iir & I915_ASLE_INTERRUPT)) |
2268 | intel_opregion_asle_intr(dev); | |
2269 | ||
2270 | /* With MSI, interrupts are only generated when iir | |
2271 | * transitions from zero to nonzero. If another bit got | |
2272 | * set while we were handling the existing iir bits, then | |
2273 | * we would never get another interrupt. | |
2274 | * | |
2275 | * This is fine on non-MSI as well, as if we hit this path | |
2276 | * we avoid exiting the interrupt handler only to generate | |
2277 | * another one. | |
2278 | * | |
2279 | * Note that for MSI this could cause a stray interrupt report | |
2280 | * if an interrupt landed in the time between writing IIR and | |
2281 | * the posting read. This should be rare enough to never | |
2282 | * trigger the 99% of 100,000 interrupts test for disabling | |
2283 | * stray interrupts. | |
2284 | */ | |
38bde180 | 2285 | ret = IRQ_HANDLED; |
a266c7d5 | 2286 | iir = new_iir; |
38bde180 | 2287 | } while (iir & ~flip_mask); |
a266c7d5 | 2288 | |
d05c617e | 2289 | i915_update_dri1_breadcrumb(dev); |
8291ee90 | 2290 | |
a266c7d5 CW |
2291 | return ret; |
2292 | } | |
2293 | ||
2294 | static void i915_irq_uninstall(struct drm_device * dev) | |
2295 | { | |
2296 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2297 | int pipe; | |
2298 | ||
a266c7d5 CW |
2299 | if (I915_HAS_HOTPLUG(dev)) { |
2300 | I915_WRITE(PORT_HOTPLUG_EN, 0); | |
2301 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
2302 | } | |
2303 | ||
00d98ebd | 2304 | I915_WRITE16(HWSTAM, 0xffff); |
55b39755 CW |
2305 | for_each_pipe(pipe) { |
2306 | /* Clear enable bits; then clear status bits */ | |
a266c7d5 | 2307 | I915_WRITE(PIPESTAT(pipe), 0); |
55b39755 CW |
2308 | I915_WRITE(PIPESTAT(pipe), I915_READ(PIPESTAT(pipe))); |
2309 | } | |
a266c7d5 CW |
2310 | I915_WRITE(IMR, 0xffffffff); |
2311 | I915_WRITE(IER, 0x0); | |
2312 | ||
a266c7d5 CW |
2313 | I915_WRITE(IIR, I915_READ(IIR)); |
2314 | } | |
2315 | ||
2316 | static void i965_irq_preinstall(struct drm_device * dev) | |
2317 | { | |
2318 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2319 | int pipe; | |
2320 | ||
2321 | atomic_set(&dev_priv->irq_received, 0); | |
2322 | ||
adca4730 CW |
2323 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
2324 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
a266c7d5 CW |
2325 | |
2326 | I915_WRITE(HWSTAM, 0xeffe); | |
2327 | for_each_pipe(pipe) | |
2328 | I915_WRITE(PIPESTAT(pipe), 0); | |
2329 | I915_WRITE(IMR, 0xffffffff); | |
2330 | I915_WRITE(IER, 0x0); | |
2331 | POSTING_READ(IER); | |
2332 | } | |
2333 | ||
2334 | static int i965_irq_postinstall(struct drm_device *dev) | |
2335 | { | |
2336 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
adca4730 | 2337 | u32 hotplug_en; |
bbba0a97 | 2338 | u32 enable_mask; |
a266c7d5 CW |
2339 | u32 error_mask; |
2340 | ||
a266c7d5 | 2341 | /* Unmask the interrupts that we always want on. */ |
bbba0a97 | 2342 | dev_priv->irq_mask = ~(I915_ASLE_INTERRUPT | |
adca4730 | 2343 | I915_DISPLAY_PORT_INTERRUPT | |
bbba0a97 CW |
2344 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | |
2345 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | | |
2346 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | | |
2347 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | | |
2348 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); | |
2349 | ||
2350 | enable_mask = ~dev_priv->irq_mask; | |
2351 | enable_mask |= I915_USER_INTERRUPT; | |
2352 | ||
2353 | if (IS_G4X(dev)) | |
2354 | enable_mask |= I915_BSD_USER_INTERRUPT; | |
a266c7d5 CW |
2355 | |
2356 | dev_priv->pipestat[0] = 0; | |
2357 | dev_priv->pipestat[1] = 0; | |
2358 | ||
a266c7d5 CW |
2359 | /* |
2360 | * Enable some error detection, note the instruction error mask | |
2361 | * bit is reserved, so we leave it masked. | |
2362 | */ | |
2363 | if (IS_G4X(dev)) { | |
2364 | error_mask = ~(GM45_ERROR_PAGE_TABLE | | |
2365 | GM45_ERROR_MEM_PRIV | | |
2366 | GM45_ERROR_CP_PRIV | | |
2367 | I915_ERROR_MEMORY_REFRESH); | |
2368 | } else { | |
2369 | error_mask = ~(I915_ERROR_PAGE_TABLE | | |
2370 | I915_ERROR_MEMORY_REFRESH); | |
2371 | } | |
2372 | I915_WRITE(EMR, error_mask); | |
2373 | ||
2374 | I915_WRITE(IMR, dev_priv->irq_mask); | |
2375 | I915_WRITE(IER, enable_mask); | |
2376 | POSTING_READ(IER); | |
2377 | ||
adca4730 CW |
2378 | /* Note HDMI and DP share hotplug bits */ |
2379 | hotplug_en = 0; | |
2380 | if (dev_priv->hotplug_supported_mask & HDMIB_HOTPLUG_INT_STATUS) | |
2381 | hotplug_en |= HDMIB_HOTPLUG_INT_EN; | |
2382 | if (dev_priv->hotplug_supported_mask & HDMIC_HOTPLUG_INT_STATUS) | |
2383 | hotplug_en |= HDMIC_HOTPLUG_INT_EN; | |
2384 | if (dev_priv->hotplug_supported_mask & HDMID_HOTPLUG_INT_STATUS) | |
2385 | hotplug_en |= HDMID_HOTPLUG_INT_EN; | |
2386 | if (dev_priv->hotplug_supported_mask & SDVOC_HOTPLUG_INT_STATUS) | |
2387 | hotplug_en |= SDVOC_HOTPLUG_INT_EN; | |
2388 | if (dev_priv->hotplug_supported_mask & SDVOB_HOTPLUG_INT_STATUS) | |
2389 | hotplug_en |= SDVOB_HOTPLUG_INT_EN; | |
2390 | if (dev_priv->hotplug_supported_mask & CRT_HOTPLUG_INT_STATUS) { | |
2391 | hotplug_en |= CRT_HOTPLUG_INT_EN; | |
a266c7d5 | 2392 | |
adca4730 CW |
2393 | /* Programming the CRT detection parameters tends |
2394 | to generate a spurious hotplug event about three | |
2395 | seconds later. So just do it once. | |
2396 | */ | |
2397 | if (IS_G4X(dev)) | |
2398 | hotplug_en |= CRT_HOTPLUG_ACTIVATION_PERIOD_64; | |
2399 | hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50; | |
2400 | } | |
a266c7d5 | 2401 | |
adca4730 | 2402 | /* Ignore TV since it's buggy */ |
a266c7d5 | 2403 | |
adca4730 | 2404 | I915_WRITE(PORT_HOTPLUG_EN, hotplug_en); |
a266c7d5 CW |
2405 | |
2406 | intel_opregion_enable_asle(dev); | |
2407 | ||
2408 | return 0; | |
2409 | } | |
2410 | ||
2411 | static irqreturn_t i965_irq_handler(DRM_IRQ_ARGS) | |
2412 | { | |
2413 | struct drm_device *dev = (struct drm_device *) arg; | |
2414 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
a266c7d5 CW |
2415 | u32 iir, new_iir; |
2416 | u32 pipe_stats[I915_MAX_PIPES]; | |
a266c7d5 CW |
2417 | unsigned long irqflags; |
2418 | int irq_received; | |
2419 | int ret = IRQ_NONE, pipe; | |
a266c7d5 CW |
2420 | |
2421 | atomic_inc(&dev_priv->irq_received); | |
2422 | ||
2423 | iir = I915_READ(IIR); | |
2424 | ||
a266c7d5 | 2425 | for (;;) { |
2c8ba29f CW |
2426 | bool blc_event = false; |
2427 | ||
a266c7d5 CW |
2428 | irq_received = iir != 0; |
2429 | ||
2430 | /* Can't rely on pipestat interrupt bit in iir as it might | |
2431 | * have been cleared after the pipestat interrupt was received. | |
2432 | * It doesn't set the bit in iir again, but it still produces | |
2433 | * interrupts (for non-MSI). | |
2434 | */ | |
2435 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); | |
2436 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) | |
2437 | i915_handle_error(dev, false); | |
2438 | ||
2439 | for_each_pipe(pipe) { | |
2440 | int reg = PIPESTAT(pipe); | |
2441 | pipe_stats[pipe] = I915_READ(reg); | |
2442 | ||
2443 | /* | |
2444 | * Clear the PIPE*STAT regs before the IIR | |
2445 | */ | |
2446 | if (pipe_stats[pipe] & 0x8000ffff) { | |
2447 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) | |
2448 | DRM_DEBUG_DRIVER("pipe %c underrun\n", | |
2449 | pipe_name(pipe)); | |
2450 | I915_WRITE(reg, pipe_stats[pipe]); | |
2451 | irq_received = 1; | |
2452 | } | |
2453 | } | |
2454 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); | |
2455 | ||
2456 | if (!irq_received) | |
2457 | break; | |
2458 | ||
2459 | ret = IRQ_HANDLED; | |
2460 | ||
2461 | /* Consume port. Then clear IIR or we'll miss events */ | |
adca4730 | 2462 | if (iir & I915_DISPLAY_PORT_INTERRUPT) { |
a266c7d5 CW |
2463 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); |
2464 | ||
2465 | DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", | |
2466 | hotplug_status); | |
2467 | if (hotplug_status & dev_priv->hotplug_supported_mask) | |
2468 | queue_work(dev_priv->wq, | |
2469 | &dev_priv->hotplug_work); | |
2470 | ||
2471 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); | |
2472 | I915_READ(PORT_HOTPLUG_STAT); | |
2473 | } | |
2474 | ||
2475 | I915_WRITE(IIR, iir); | |
2476 | new_iir = I915_READ(IIR); /* Flush posted writes */ | |
2477 | ||
a266c7d5 CW |
2478 | if (iir & I915_USER_INTERRUPT) |
2479 | notify_ring(dev, &dev_priv->ring[RCS]); | |
2480 | if (iir & I915_BSD_USER_INTERRUPT) | |
2481 | notify_ring(dev, &dev_priv->ring[VCS]); | |
2482 | ||
4f7d1e79 | 2483 | if (iir & I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT) |
a266c7d5 | 2484 | intel_prepare_page_flip(dev, 0); |
a266c7d5 | 2485 | |
4f7d1e79 | 2486 | if (iir & I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT) |
a266c7d5 | 2487 | intel_prepare_page_flip(dev, 1); |
a266c7d5 CW |
2488 | |
2489 | for_each_pipe(pipe) { | |
2c8ba29f | 2490 | if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS && |
a266c7d5 | 2491 | drm_handle_vblank(dev, pipe)) { |
4f7d1e79 CW |
2492 | i915_pageflip_stall_check(dev, pipe); |
2493 | intel_finish_page_flip(dev, pipe); | |
a266c7d5 CW |
2494 | } |
2495 | ||
2496 | if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) | |
2497 | blc_event = true; | |
2498 | } | |
2499 | ||
2500 | ||
2501 | if (blc_event || (iir & I915_ASLE_INTERRUPT)) | |
2502 | intel_opregion_asle_intr(dev); | |
2503 | ||
2504 | /* With MSI, interrupts are only generated when iir | |
2505 | * transitions from zero to nonzero. If another bit got | |
2506 | * set while we were handling the existing iir bits, then | |
2507 | * we would never get another interrupt. | |
2508 | * | |
2509 | * This is fine on non-MSI as well, as if we hit this path | |
2510 | * we avoid exiting the interrupt handler only to generate | |
2511 | * another one. | |
2512 | * | |
2513 | * Note that for MSI this could cause a stray interrupt report | |
2514 | * if an interrupt landed in the time between writing IIR and | |
2515 | * the posting read. This should be rare enough to never | |
2516 | * trigger the 99% of 100,000 interrupts test for disabling | |
2517 | * stray interrupts. | |
2518 | */ | |
2519 | iir = new_iir; | |
2520 | } | |
2521 | ||
d05c617e | 2522 | i915_update_dri1_breadcrumb(dev); |
2c8ba29f | 2523 | |
a266c7d5 CW |
2524 | return ret; |
2525 | } | |
2526 | ||
2527 | static void i965_irq_uninstall(struct drm_device * dev) | |
2528 | { | |
2529 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
2530 | int pipe; | |
2531 | ||
2532 | if (!dev_priv) | |
2533 | return; | |
2534 | ||
adca4730 CW |
2535 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
2536 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); | |
a266c7d5 CW |
2537 | |
2538 | I915_WRITE(HWSTAM, 0xffffffff); | |
2539 | for_each_pipe(pipe) | |
2540 | I915_WRITE(PIPESTAT(pipe), 0); | |
2541 | I915_WRITE(IMR, 0xffffffff); | |
2542 | I915_WRITE(IER, 0x0); | |
2543 | ||
2544 | for_each_pipe(pipe) | |
2545 | I915_WRITE(PIPESTAT(pipe), | |
2546 | I915_READ(PIPESTAT(pipe)) & 0x8000ffff); | |
2547 | I915_WRITE(IIR, I915_READ(IIR)); | |
2548 | } | |
2549 | ||
f71d4af4 JB |
2550 | void intel_irq_init(struct drm_device *dev) |
2551 | { | |
8b2e326d CW |
2552 | struct drm_i915_private *dev_priv = dev->dev_private; |
2553 | ||
2554 | INIT_WORK(&dev_priv->hotplug_work, i915_hotplug_work_func); | |
2555 | INIT_WORK(&dev_priv->error_work, i915_error_work_func); | |
2556 | INIT_WORK(&dev_priv->rps_work, gen6_pm_rps_work); | |
2557 | ||
f71d4af4 JB |
2558 | dev->driver->get_vblank_counter = i915_get_vblank_counter; |
2559 | dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */ | |
7d4e146f | 2560 | if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) { |
f71d4af4 JB |
2561 | dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */ |
2562 | dev->driver->get_vblank_counter = gm45_get_vblank_counter; | |
2563 | } | |
2564 | ||
c3613de9 KP |
2565 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
2566 | dev->driver->get_vblank_timestamp = i915_get_vblank_timestamp; | |
2567 | else | |
2568 | dev->driver->get_vblank_timestamp = NULL; | |
f71d4af4 JB |
2569 | dev->driver->get_scanout_position = i915_get_crtc_scanoutpos; |
2570 | ||
7e231dbe JB |
2571 | if (IS_VALLEYVIEW(dev)) { |
2572 | dev->driver->irq_handler = valleyview_irq_handler; | |
2573 | dev->driver->irq_preinstall = valleyview_irq_preinstall; | |
2574 | dev->driver->irq_postinstall = valleyview_irq_postinstall; | |
2575 | dev->driver->irq_uninstall = valleyview_irq_uninstall; | |
2576 | dev->driver->enable_vblank = valleyview_enable_vblank; | |
2577 | dev->driver->disable_vblank = valleyview_disable_vblank; | |
2578 | } else if (IS_IVYBRIDGE(dev)) { | |
f71d4af4 JB |
2579 | /* Share pre & uninstall handlers with ILK/SNB */ |
2580 | dev->driver->irq_handler = ivybridge_irq_handler; | |
2581 | dev->driver->irq_preinstall = ironlake_irq_preinstall; | |
2582 | dev->driver->irq_postinstall = ivybridge_irq_postinstall; | |
2583 | dev->driver->irq_uninstall = ironlake_irq_uninstall; | |
2584 | dev->driver->enable_vblank = ivybridge_enable_vblank; | |
2585 | dev->driver->disable_vblank = ivybridge_disable_vblank; | |
7d4e146f ED |
2586 | } else if (IS_HASWELL(dev)) { |
2587 | /* Share interrupts handling with IVB */ | |
2588 | dev->driver->irq_handler = ivybridge_irq_handler; | |
2589 | dev->driver->irq_preinstall = ironlake_irq_preinstall; | |
2590 | dev->driver->irq_postinstall = ivybridge_irq_postinstall; | |
2591 | dev->driver->irq_uninstall = ironlake_irq_uninstall; | |
2592 | dev->driver->enable_vblank = ivybridge_enable_vblank; | |
2593 | dev->driver->disable_vblank = ivybridge_disable_vblank; | |
f71d4af4 JB |
2594 | } else if (HAS_PCH_SPLIT(dev)) { |
2595 | dev->driver->irq_handler = ironlake_irq_handler; | |
2596 | dev->driver->irq_preinstall = ironlake_irq_preinstall; | |
2597 | dev->driver->irq_postinstall = ironlake_irq_postinstall; | |
2598 | dev->driver->irq_uninstall = ironlake_irq_uninstall; | |
2599 | dev->driver->enable_vblank = ironlake_enable_vblank; | |
2600 | dev->driver->disable_vblank = ironlake_disable_vblank; | |
2601 | } else { | |
c2798b19 CW |
2602 | if (INTEL_INFO(dev)->gen == 2) { |
2603 | dev->driver->irq_preinstall = i8xx_irq_preinstall; | |
2604 | dev->driver->irq_postinstall = i8xx_irq_postinstall; | |
2605 | dev->driver->irq_handler = i8xx_irq_handler; | |
2606 | dev->driver->irq_uninstall = i8xx_irq_uninstall; | |
a266c7d5 | 2607 | } else if (INTEL_INFO(dev)->gen == 3) { |
4f7d1e79 CW |
2608 | /* IIR "flip pending" means done if this bit is set */ |
2609 | I915_WRITE(ECOSKPD, _MASKED_BIT_DISABLE(ECO_FLIP_DONE)); | |
2610 | ||
a266c7d5 CW |
2611 | dev->driver->irq_preinstall = i915_irq_preinstall; |
2612 | dev->driver->irq_postinstall = i915_irq_postinstall; | |
2613 | dev->driver->irq_uninstall = i915_irq_uninstall; | |
2614 | dev->driver->irq_handler = i915_irq_handler; | |
c2798b19 | 2615 | } else { |
a266c7d5 CW |
2616 | dev->driver->irq_preinstall = i965_irq_preinstall; |
2617 | dev->driver->irq_postinstall = i965_irq_postinstall; | |
2618 | dev->driver->irq_uninstall = i965_irq_uninstall; | |
2619 | dev->driver->irq_handler = i965_irq_handler; | |
c2798b19 | 2620 | } |
f71d4af4 JB |
2621 | dev->driver->enable_vblank = i915_enable_vblank; |
2622 | dev->driver->disable_vblank = i915_disable_vblank; | |
2623 | } | |
2624 | } |