1 /* i915_irq.c -- IRQ support for the I915 -*- linux-c -*-
4 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial portions
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.
29 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31 #include <linux/sysrq.h>
32 #include <linux/slab.h>
37 #include "i915_trace.h"
38 #include "intel_drv.h"
40 /* For display hotplug interrupt */
42 ironlake_enable_display_irq(drm_i915_private_t *dev_priv, u32 mask)
44 if ((dev_priv->irq_mask & mask) != 0) {
45 dev_priv->irq_mask &= ~mask;
46 I915_WRITE(DEIMR, dev_priv->irq_mask);
52 ironlake_disable_display_irq(drm_i915_private_t *dev_priv, u32 mask)
54 if ((dev_priv->irq_mask & mask) != mask) {
55 dev_priv->irq_mask |= mask;
56 I915_WRITE(DEIMR, dev_priv->irq_mask);
62 i915_enable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask)
64 if ((dev_priv->pipestat[pipe] & mask) != mask) {
65 u32 reg = PIPESTAT(pipe);
67 dev_priv->pipestat[pipe] |= mask;
68 /* Enable the interrupt, clear any pending status */
69 I915_WRITE(reg, dev_priv->pipestat[pipe] | (mask >> 16));
75 i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask)
77 if ((dev_priv->pipestat[pipe] & mask) != 0) {
78 u32 reg = PIPESTAT(pipe);
80 dev_priv->pipestat[pipe] &= ~mask;
81 I915_WRITE(reg, dev_priv->pipestat[pipe]);
87 * intel_enable_asle - enable ASLE interrupt for OpRegion
89 void intel_enable_asle(struct drm_device *dev)
91 drm_i915_private_t *dev_priv = dev->dev_private;
92 unsigned long irqflags;
94 /* FIXME: opregion/asle for VLV */
95 if (IS_VALLEYVIEW(dev))
98 spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
100 if (HAS_PCH_SPLIT(dev))
101 ironlake_enable_display_irq(dev_priv, DE_GSE);
103 i915_enable_pipestat(dev_priv, 1,
104 PIPE_LEGACY_BLC_EVENT_ENABLE);
105 if (INTEL_INFO(dev)->gen >= 4)
106 i915_enable_pipestat(dev_priv, 0,
107 PIPE_LEGACY_BLC_EVENT_ENABLE);
110 spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
114 * i915_pipe_enabled - check if a pipe is enabled
116 * @pipe: pipe to check
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.
123 i915_pipe_enabled(struct drm_device *dev, int pipe)
125 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
126 return I915_READ(PIPECONF(pipe)) & PIPECONF_ENABLE;
129 /* Called from drm generic code, passed a 'crtc', which
130 * we use as a pipe index
132 static u32 i915_get_vblank_counter(struct drm_device *dev, int pipe)
134 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
135 unsigned long high_frame;
136 unsigned long low_frame;
137 u32 high1, high2, low;
139 if (!i915_pipe_enabled(dev, pipe)) {
140 DRM_DEBUG_DRIVER("trying to get vblank count for disabled "
141 "pipe %c\n", pipe_name(pipe));
145 high_frame = PIPEFRAME(pipe);
146 low_frame = PIPEFRAMEPIXEL(pipe);
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
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;
157 } while (high1 != high2);
159 high1 >>= PIPE_FRAME_HIGH_SHIFT;
160 low >>= PIPE_FRAME_LOW_SHIFT;
161 return (high1 << 8) | low;
164 static u32 gm45_get_vblank_counter(struct drm_device *dev, int pipe)
166 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
167 int reg = PIPE_FRMCOUNT_GM45(pipe);
169 if (!i915_pipe_enabled(dev, pipe)) {
170 DRM_DEBUG_DRIVER("trying to get vblank count for disabled "
171 "pipe %c\n", pipe_name(pipe));
175 return I915_READ(reg);
178 static int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe,
179 int *vpos, int *hpos)
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;
187 if (!i915_pipe_enabled(dev, pipe)) {
188 DRM_DEBUG_DRIVER("trying to get scanoutpos for disabled "
189 "pipe %c\n", pipe_name(pipe));
194 vtotal = 1 + ((I915_READ(VTOTAL(pipe)) >> 16) & 0x1fff);
196 if (INTEL_INFO(dev)->gen >= 4) {
197 /* No obvious pixelcount register. Only query vertical
198 * scanout position from Display scan line register.
200 position = I915_READ(PIPEDSL(pipe));
202 /* Decode into vertical scanout position. Don't have
203 * horizontal scanout position.
205 *vpos = position & 0x1fff;
208 /* Have access to pixelcount since start of frame.
209 * We can split this into vertical and horizontal
212 position = (I915_READ(PIPEFRAMEPIXEL(pipe)) & PIPE_PIXEL_MASK) >> PIPE_PIXEL_SHIFT;
214 htotal = 1 + ((I915_READ(HTOTAL(pipe)) >> 16) & 0x1fff);
215 *vpos = position / htotal;
216 *hpos = position - (*vpos * htotal);
219 /* Query vblank area. */
220 vbl = I915_READ(VBLANK(pipe));
222 /* Test position against vblank region. */
223 vbl_start = vbl & 0x1fff;
224 vbl_end = (vbl >> 16) & 0x1fff;
226 if ((*vpos < vbl_start) || (*vpos > vbl_end))
229 /* Inside "upper part" of vblank area? Apply corrective offset: */
230 if (in_vbl && (*vpos >= vbl_start))
231 *vpos = *vpos - vtotal;
233 /* Readouts valid? */
235 ret |= DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE;
239 ret |= DRM_SCANOUTPOS_INVBL;
244 static int i915_get_vblank_timestamp(struct drm_device *dev, int pipe,
246 struct timeval *vblank_time,
249 struct drm_i915_private *dev_priv = dev->dev_private;
250 struct drm_crtc *crtc;
252 if (pipe < 0 || pipe >= dev_priv->num_pipe) {
253 DRM_ERROR("Invalid crtc %d\n", pipe);
257 /* Get drm_crtc to timestamp: */
258 crtc = intel_get_crtc_for_pipe(dev, pipe);
260 DRM_ERROR("Invalid crtc %d\n", pipe);
264 if (!crtc->enabled) {
265 DRM_DEBUG_KMS("crtc %d is disabled\n", pipe);
269 /* Helper routine in DRM core does all the work: */
270 return drm_calc_vbltimestamp_from_scanoutpos(dev, pipe, max_error,
276 * Handle hotplug events outside the interrupt handler proper.
278 static void i915_hotplug_work_func(struct work_struct *work)
280 drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
282 struct drm_device *dev = dev_priv->dev;
283 struct drm_mode_config *mode_config = &dev->mode_config;
284 struct intel_encoder *encoder;
286 mutex_lock(&mode_config->mutex);
287 DRM_DEBUG_KMS("running encoder hotplug functions\n");
289 list_for_each_entry(encoder, &mode_config->encoder_list, base.head)
290 if (encoder->hot_plug)
291 encoder->hot_plug(encoder);
293 mutex_unlock(&mode_config->mutex);
295 /* Just fire off a uevent and let userspace tell us what to do */
296 drm_helper_hpd_irq_event(dev);
299 static void i915_handle_rps_change(struct drm_device *dev)
301 drm_i915_private_t *dev_priv = dev->dev_private;
302 u32 busy_up, busy_down, max_avg, min_avg;
303 u8 new_delay = dev_priv->cur_delay;
305 I915_WRITE16(MEMINTRSTS, MEMINT_EVAL_CHG);
306 busy_up = I915_READ(RCPREVBSYTUPAVG);
307 busy_down = I915_READ(RCPREVBSYTDNAVG);
308 max_avg = I915_READ(RCBMAXAVG);
309 min_avg = I915_READ(RCBMINAVG);
311 /* Handle RCS change request from hw */
312 if (busy_up > max_avg) {
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;
317 } else if (busy_down < min_avg) {
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;
324 if (ironlake_set_drps(dev, new_delay))
325 dev_priv->cur_delay = new_delay;
330 static void notify_ring(struct drm_device *dev,
331 struct intel_ring_buffer *ring)
333 struct drm_i915_private *dev_priv = dev->dev_private;
335 if (ring->obj == NULL)
338 trace_i915_gem_request_complete(ring, ring->get_seqno(ring));
340 wake_up_all(&ring->irq_queue);
341 if (i915_enable_hangcheck) {
342 dev_priv->hangcheck_count = 0;
343 mod_timer(&dev_priv->hangcheck_timer,
345 msecs_to_jiffies(DRM_I915_HANGCHECK_PERIOD));
349 static void gen6_pm_rps_work(struct work_struct *work)
351 drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
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);
360 I915_WRITE(GEN6_PMIMR, 0);
361 spin_unlock_irq(&dev_priv->rps_lock);
363 if ((pm_iir & GEN6_PM_DEFERRED_EVENTS) == 0)
366 mutex_lock(&dev_priv->dev->struct_mutex);
368 if (pm_iir & GEN6_PM_RP_UP_THRESHOLD)
369 new_delay = dev_priv->cur_delay + 1;
371 new_delay = dev_priv->cur_delay - 1;
373 gen6_set_rps(dev_priv->dev, new_delay);
375 mutex_unlock(&dev_priv->dev->struct_mutex);
380 * ivybridge_parity_work - Workqueue called when a parity error interrupt
382 * @work: workqueue struct
384 * Doesn't actually do anything except notify userspace. As a consequence of
385 * this event, userspace should try to remap the bad rows since statistically
386 * it is likely the same row is more likely to go bad again.
388 static void ivybridge_parity_work(struct work_struct *work)
390 drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
392 u32 error_status, row, bank, subbank;
393 char *parity_event[5];
397 /* We must turn off DOP level clock gating to access the L3 registers.
398 * In order to prevent a get/put style interface, acquire struct mutex
399 * any time we access those registers.
401 mutex_lock(&dev_priv->dev->struct_mutex);
403 misccpctl = I915_READ(GEN7_MISCCPCTL);
404 I915_WRITE(GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE);
405 POSTING_READ(GEN7_MISCCPCTL);
407 error_status = I915_READ(GEN7_L3CDERRST1);
408 row = GEN7_PARITY_ERROR_ROW(error_status);
409 bank = GEN7_PARITY_ERROR_BANK(error_status);
410 subbank = GEN7_PARITY_ERROR_SUBBANK(error_status);
412 I915_WRITE(GEN7_L3CDERRST1, GEN7_PARITY_ERROR_VALID |
413 GEN7_L3CDERRST1_ENABLE);
414 POSTING_READ(GEN7_L3CDERRST1);
416 I915_WRITE(GEN7_MISCCPCTL, misccpctl);
418 spin_lock_irqsave(&dev_priv->irq_lock, flags);
419 dev_priv->gt_irq_mask &= ~GT_GEN7_L3_PARITY_ERROR_INTERRUPT;
420 I915_WRITE(GTIMR, dev_priv->gt_irq_mask);
421 spin_unlock_irqrestore(&dev_priv->irq_lock, flags);
423 mutex_unlock(&dev_priv->dev->struct_mutex);
425 parity_event[0] = "L3_PARITY_ERROR=1";
426 parity_event[1] = kasprintf(GFP_KERNEL, "ROW=%d", row);
427 parity_event[2] = kasprintf(GFP_KERNEL, "BANK=%d", bank);
428 parity_event[3] = kasprintf(GFP_KERNEL, "SUBBANK=%d", subbank);
429 parity_event[4] = NULL;
431 kobject_uevent_env(&dev_priv->dev->primary->kdev.kobj,
432 KOBJ_CHANGE, parity_event);
434 DRM_DEBUG("Parity error: Row = %d, Bank = %d, Sub bank = %d.\n",
437 kfree(parity_event[3]);
438 kfree(parity_event[2]);
439 kfree(parity_event[1]);
442 static void ivybridge_handle_parity_error(struct drm_device *dev)
444 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
447 if (!IS_IVYBRIDGE(dev))
450 spin_lock_irqsave(&dev_priv->irq_lock, flags);
451 dev_priv->gt_irq_mask |= GT_GEN7_L3_PARITY_ERROR_INTERRUPT;
452 I915_WRITE(GTIMR, dev_priv->gt_irq_mask);
453 spin_unlock_irqrestore(&dev_priv->irq_lock, flags);
455 queue_work(dev_priv->wq, &dev_priv->parity_error_work);
458 static void snb_gt_irq_handler(struct drm_device *dev,
459 struct drm_i915_private *dev_priv,
463 if (gt_iir & (GEN6_RENDER_USER_INTERRUPT |
464 GEN6_RENDER_PIPE_CONTROL_NOTIFY_INTERRUPT))
465 notify_ring(dev, &dev_priv->ring[RCS]);
466 if (gt_iir & GEN6_BSD_USER_INTERRUPT)
467 notify_ring(dev, &dev_priv->ring[VCS]);
468 if (gt_iir & GEN6_BLITTER_USER_INTERRUPT)
469 notify_ring(dev, &dev_priv->ring[BCS]);
471 if (gt_iir & (GT_GEN6_BLT_CS_ERROR_INTERRUPT |
472 GT_GEN6_BSD_CS_ERROR_INTERRUPT |
473 GT_RENDER_CS_ERROR_INTERRUPT)) {
474 DRM_ERROR("GT error interrupt 0x%08x\n", gt_iir);
475 i915_handle_error(dev, false);
478 if (gt_iir & GT_GEN7_L3_PARITY_ERROR_INTERRUPT)
479 ivybridge_handle_parity_error(dev);
482 static void gen6_queue_rps_work(struct drm_i915_private *dev_priv,
488 * IIR bits should never already be set because IMR should
489 * prevent an interrupt from being shown in IIR. The warning
490 * displays a case where we've unsafely cleared
491 * dev_priv->pm_iir. Although missing an interrupt of the same
492 * type is not a problem, it displays a problem in the logic.
494 * The mask bit in IMR is cleared by rps_work.
497 spin_lock_irqsave(&dev_priv->rps_lock, flags);
498 dev_priv->pm_iir |= pm_iir;
499 I915_WRITE(GEN6_PMIMR, dev_priv->pm_iir);
500 POSTING_READ(GEN6_PMIMR);
501 spin_unlock_irqrestore(&dev_priv->rps_lock, flags);
503 queue_work(dev_priv->wq, &dev_priv->rps_work);
506 static irqreturn_t valleyview_irq_handler(DRM_IRQ_ARGS)
508 struct drm_device *dev = (struct drm_device *) arg;
509 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
510 u32 iir, gt_iir, pm_iir;
511 irqreturn_t ret = IRQ_NONE;
512 unsigned long irqflags;
514 u32 pipe_stats[I915_MAX_PIPES];
517 atomic_inc(&dev_priv->irq_received);
520 iir = I915_READ(VLV_IIR);
521 gt_iir = I915_READ(GTIIR);
522 pm_iir = I915_READ(GEN6_PMIIR);
524 if (gt_iir == 0 && pm_iir == 0 && iir == 0)
529 snb_gt_irq_handler(dev, dev_priv, gt_iir);
531 spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
532 for_each_pipe(pipe) {
533 int reg = PIPESTAT(pipe);
534 pipe_stats[pipe] = I915_READ(reg);
537 * Clear the PIPE*STAT regs before the IIR
539 if (pipe_stats[pipe] & 0x8000ffff) {
540 if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
541 DRM_DEBUG_DRIVER("pipe %c underrun\n",
543 I915_WRITE(reg, pipe_stats[pipe]);
546 spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
548 for_each_pipe(pipe) {
549 if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS)
550 drm_handle_vblank(dev, pipe);
552 if (pipe_stats[pipe] & PLANE_FLIPDONE_INT_STATUS_VLV) {
553 intel_prepare_page_flip(dev, pipe);
554 intel_finish_page_flip(dev, pipe);
558 /* Consume port. Then clear IIR or we'll miss events */
559 if (iir & I915_DISPLAY_PORT_INTERRUPT) {
560 u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT);
562 DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n",
564 if (hotplug_status & dev_priv->hotplug_supported_mask)
565 queue_work(dev_priv->wq,
566 &dev_priv->hotplug_work);
568 I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status);
569 I915_READ(PORT_HOTPLUG_STAT);
572 if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
575 if (pm_iir & GEN6_PM_DEFERRED_EVENTS)
576 gen6_queue_rps_work(dev_priv, pm_iir);
578 I915_WRITE(GTIIR, gt_iir);
579 I915_WRITE(GEN6_PMIIR, pm_iir);
580 I915_WRITE(VLV_IIR, iir);
587 static void ibx_irq_handler(struct drm_device *dev, u32 pch_iir)
589 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
592 if (pch_iir & SDE_AUDIO_POWER_MASK)
593 DRM_DEBUG_DRIVER("PCH audio power change on port %d\n",
594 (pch_iir & SDE_AUDIO_POWER_MASK) >>
595 SDE_AUDIO_POWER_SHIFT);
597 if (pch_iir & SDE_GMBUS)
598 DRM_DEBUG_DRIVER("PCH GMBUS interrupt\n");
600 if (pch_iir & SDE_AUDIO_HDCP_MASK)
601 DRM_DEBUG_DRIVER("PCH HDCP audio interrupt\n");
603 if (pch_iir & SDE_AUDIO_TRANS_MASK)
604 DRM_DEBUG_DRIVER("PCH transcoder audio interrupt\n");
606 if (pch_iir & SDE_POISON)
607 DRM_ERROR("PCH poison interrupt\n");
609 if (pch_iir & SDE_FDI_MASK)
611 DRM_DEBUG_DRIVER(" pipe %c FDI IIR: 0x%08x\n",
613 I915_READ(FDI_RX_IIR(pipe)));
615 if (pch_iir & (SDE_TRANSB_CRC_DONE | SDE_TRANSA_CRC_DONE))
616 DRM_DEBUG_DRIVER("PCH transcoder CRC done interrupt\n");
618 if (pch_iir & (SDE_TRANSB_CRC_ERR | SDE_TRANSA_CRC_ERR))
619 DRM_DEBUG_DRIVER("PCH transcoder CRC error interrupt\n");
621 if (pch_iir & SDE_TRANSB_FIFO_UNDER)
622 DRM_DEBUG_DRIVER("PCH transcoder B underrun interrupt\n");
623 if (pch_iir & SDE_TRANSA_FIFO_UNDER)
624 DRM_DEBUG_DRIVER("PCH transcoder A underrun interrupt\n");
627 static void cpt_irq_handler(struct drm_device *dev, u32 pch_iir)
629 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
632 if (pch_iir & SDE_AUDIO_POWER_MASK_CPT)
633 DRM_DEBUG_DRIVER("PCH audio power change on port %d\n",
634 (pch_iir & SDE_AUDIO_POWER_MASK_CPT) >>
635 SDE_AUDIO_POWER_SHIFT_CPT);
637 if (pch_iir & SDE_AUX_MASK_CPT)
638 DRM_DEBUG_DRIVER("AUX channel interrupt\n");
640 if (pch_iir & SDE_GMBUS_CPT)
641 DRM_DEBUG_DRIVER("PCH GMBUS interrupt\n");
643 if (pch_iir & SDE_AUDIO_CP_REQ_CPT)
644 DRM_DEBUG_DRIVER("Audio CP request interrupt\n");
646 if (pch_iir & SDE_AUDIO_CP_CHG_CPT)
647 DRM_DEBUG_DRIVER("Audio CP change interrupt\n");
649 if (pch_iir & SDE_FDI_MASK_CPT)
651 DRM_DEBUG_DRIVER(" pipe %c FDI IIR: 0x%08x\n",
653 I915_READ(FDI_RX_IIR(pipe)));
656 static irqreturn_t ivybridge_irq_handler(DRM_IRQ_ARGS)
658 struct drm_device *dev = (struct drm_device *) arg;
659 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
660 u32 de_iir, gt_iir, de_ier, pm_iir;
661 irqreturn_t ret = IRQ_NONE;
664 atomic_inc(&dev_priv->irq_received);
666 /* disable master interrupt before clearing iir */
667 de_ier = I915_READ(DEIER);
668 I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL);
670 gt_iir = I915_READ(GTIIR);
672 snb_gt_irq_handler(dev, dev_priv, gt_iir);
673 I915_WRITE(GTIIR, gt_iir);
677 de_iir = I915_READ(DEIIR);
679 if (de_iir & DE_GSE_IVB)
680 intel_opregion_gse_intr(dev);
682 for (i = 0; i < 3; i++) {
683 if (de_iir & (DE_PLANEA_FLIP_DONE_IVB << (5 * i))) {
684 intel_prepare_page_flip(dev, i);
685 intel_finish_page_flip_plane(dev, i);
687 if (de_iir & (DE_PIPEA_VBLANK_IVB << (5 * i)))
688 drm_handle_vblank(dev, i);
691 /* check event from PCH */
692 if (de_iir & DE_PCH_EVENT_IVB) {
693 u32 pch_iir = I915_READ(SDEIIR);
695 if (pch_iir & SDE_HOTPLUG_MASK_CPT)
696 queue_work(dev_priv->wq, &dev_priv->hotplug_work);
697 cpt_irq_handler(dev, pch_iir);
699 /* clear PCH hotplug event before clear CPU irq */
700 I915_WRITE(SDEIIR, pch_iir);
703 I915_WRITE(DEIIR, de_iir);
707 pm_iir = I915_READ(GEN6_PMIIR);
709 if (pm_iir & GEN6_PM_DEFERRED_EVENTS)
710 gen6_queue_rps_work(dev_priv, pm_iir);
711 I915_WRITE(GEN6_PMIIR, pm_iir);
715 I915_WRITE(DEIER, de_ier);
721 static void ilk_gt_irq_handler(struct drm_device *dev,
722 struct drm_i915_private *dev_priv,
725 if (gt_iir & (GT_USER_INTERRUPT | GT_PIPE_NOTIFY))
726 notify_ring(dev, &dev_priv->ring[RCS]);
727 if (gt_iir & GT_BSD_USER_INTERRUPT)
728 notify_ring(dev, &dev_priv->ring[VCS]);
731 static irqreturn_t ironlake_irq_handler(DRM_IRQ_ARGS)
733 struct drm_device *dev = (struct drm_device *) arg;
734 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
736 u32 de_iir, gt_iir, de_ier, pch_iir, pm_iir;
739 atomic_inc(&dev_priv->irq_received);
741 /* disable master interrupt before clearing iir */
742 de_ier = I915_READ(DEIER);
743 I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL);
746 de_iir = I915_READ(DEIIR);
747 gt_iir = I915_READ(GTIIR);
748 pch_iir = I915_READ(SDEIIR);
749 pm_iir = I915_READ(GEN6_PMIIR);
751 if (de_iir == 0 && gt_iir == 0 && pch_iir == 0 &&
752 (!IS_GEN6(dev) || pm_iir == 0))
755 if (HAS_PCH_CPT(dev))
756 hotplug_mask = SDE_HOTPLUG_MASK_CPT;
758 hotplug_mask = SDE_HOTPLUG_MASK;
763 ilk_gt_irq_handler(dev, dev_priv, gt_iir);
765 snb_gt_irq_handler(dev, dev_priv, gt_iir);
768 intel_opregion_gse_intr(dev);
770 if (de_iir & DE_PLANEA_FLIP_DONE) {
771 intel_prepare_page_flip(dev, 0);
772 intel_finish_page_flip_plane(dev, 0);
775 if (de_iir & DE_PLANEB_FLIP_DONE) {
776 intel_prepare_page_flip(dev, 1);
777 intel_finish_page_flip_plane(dev, 1);
780 if (de_iir & DE_PIPEA_VBLANK)
781 drm_handle_vblank(dev, 0);
783 if (de_iir & DE_PIPEB_VBLANK)
784 drm_handle_vblank(dev, 1);
786 /* check event from PCH */
787 if (de_iir & DE_PCH_EVENT) {
788 if (pch_iir & hotplug_mask)
789 queue_work(dev_priv->wq, &dev_priv->hotplug_work);
790 if (HAS_PCH_CPT(dev))
791 cpt_irq_handler(dev, pch_iir);
793 ibx_irq_handler(dev, pch_iir);
796 if (de_iir & DE_PCU_EVENT) {
797 I915_WRITE16(MEMINTRSTS, I915_READ(MEMINTRSTS));
798 i915_handle_rps_change(dev);
801 if (IS_GEN6(dev) && pm_iir & GEN6_PM_DEFERRED_EVENTS)
802 gen6_queue_rps_work(dev_priv, pm_iir);
804 /* should clear PCH hotplug event before clear CPU irq */
805 I915_WRITE(SDEIIR, pch_iir);
806 I915_WRITE(GTIIR, gt_iir);
807 I915_WRITE(DEIIR, de_iir);
808 I915_WRITE(GEN6_PMIIR, pm_iir);
811 I915_WRITE(DEIER, de_ier);
818 * i915_error_work_func - do process context error handling work
821 * Fire an error uevent so userspace can see that a hang or error
824 static void i915_error_work_func(struct work_struct *work)
826 drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
828 struct drm_device *dev = dev_priv->dev;
829 char *error_event[] = { "ERROR=1", NULL };
830 char *reset_event[] = { "RESET=1", NULL };
831 char *reset_done_event[] = { "ERROR=0", NULL };
833 kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, error_event);
835 if (atomic_read(&dev_priv->mm.wedged)) {
836 DRM_DEBUG_DRIVER("resetting chip\n");
837 kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, reset_event);
838 if (!i915_reset(dev)) {
839 atomic_set(&dev_priv->mm.wedged, 0);
840 kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, reset_done_event);
842 complete_all(&dev_priv->error_completion);
846 #ifdef CONFIG_DEBUG_FS
847 static struct drm_i915_error_object *
848 i915_error_object_create(struct drm_i915_private *dev_priv,
849 struct drm_i915_gem_object *src)
851 struct drm_i915_error_object *dst;
852 int page, page_count;
855 if (src == NULL || src->pages == NULL)
858 page_count = src->base.size / PAGE_SIZE;
860 dst = kmalloc(sizeof(*dst) + page_count * sizeof(u32 *), GFP_ATOMIC);
864 reloc_offset = src->gtt_offset;
865 for (page = 0; page < page_count; page++) {
869 d = kmalloc(PAGE_SIZE, GFP_ATOMIC);
873 local_irq_save(flags);
874 if (reloc_offset < dev_priv->mm.gtt_mappable_end &&
875 src->has_global_gtt_mapping) {
878 /* Simply ignore tiling or any overlapping fence.
879 * It's part of the error state, and this hopefully
880 * captures what the GPU read.
883 s = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping,
885 memcpy_fromio(d, s, PAGE_SIZE);
886 io_mapping_unmap_atomic(s);
890 drm_clflush_pages(&src->pages[page], 1);
892 s = kmap_atomic(src->pages[page]);
893 memcpy(d, s, PAGE_SIZE);
896 drm_clflush_pages(&src->pages[page], 1);
898 local_irq_restore(flags);
900 dst->pages[page] = d;
902 reloc_offset += PAGE_SIZE;
904 dst->page_count = page_count;
905 dst->gtt_offset = src->gtt_offset;
911 kfree(dst->pages[page]);
917 i915_error_object_free(struct drm_i915_error_object *obj)
924 for (page = 0; page < obj->page_count; page++)
925 kfree(obj->pages[page]);
931 i915_error_state_free(struct kref *error_ref)
933 struct drm_i915_error_state *error = container_of(error_ref,
934 typeof(*error), ref);
937 for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
938 i915_error_object_free(error->ring[i].batchbuffer);
939 i915_error_object_free(error->ring[i].ringbuffer);
940 kfree(error->ring[i].requests);
943 kfree(error->active_bo);
944 kfree(error->overlay);
947 static void capture_bo(struct drm_i915_error_buffer *err,
948 struct drm_i915_gem_object *obj)
950 err->size = obj->base.size;
951 err->name = obj->base.name;
952 err->seqno = obj->last_rendering_seqno;
953 err->gtt_offset = obj->gtt_offset;
954 err->read_domains = obj->base.read_domains;
955 err->write_domain = obj->base.write_domain;
956 err->fence_reg = obj->fence_reg;
958 if (obj->pin_count > 0)
960 if (obj->user_pin_count > 0)
962 err->tiling = obj->tiling_mode;
963 err->dirty = obj->dirty;
964 err->purgeable = obj->madv != I915_MADV_WILLNEED;
965 err->ring = obj->ring ? obj->ring->id : -1;
966 err->cache_level = obj->cache_level;
969 static u32 capture_active_bo(struct drm_i915_error_buffer *err,
970 int count, struct list_head *head)
972 struct drm_i915_gem_object *obj;
975 list_for_each_entry(obj, head, mm_list) {
976 capture_bo(err++, obj);
984 static u32 capture_pinned_bo(struct drm_i915_error_buffer *err,
985 int count, struct list_head *head)
987 struct drm_i915_gem_object *obj;
990 list_for_each_entry(obj, head, gtt_list) {
991 if (obj->pin_count == 0)
994 capture_bo(err++, obj);
1002 static void i915_gem_record_fences(struct drm_device *dev,
1003 struct drm_i915_error_state *error)
1005 struct drm_i915_private *dev_priv = dev->dev_private;
1009 switch (INTEL_INFO(dev)->gen) {
1012 for (i = 0; i < 16; i++)
1013 error->fence[i] = I915_READ64(FENCE_REG_SANDYBRIDGE_0 + (i * 8));
1017 for (i = 0; i < 16; i++)
1018 error->fence[i] = I915_READ64(FENCE_REG_965_0 + (i * 8));
1021 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
1022 for (i = 0; i < 8; i++)
1023 error->fence[i+8] = I915_READ(FENCE_REG_945_8 + (i * 4));
1025 for (i = 0; i < 8; i++)
1026 error->fence[i] = I915_READ(FENCE_REG_830_0 + (i * 4));
1032 static struct drm_i915_error_object *
1033 i915_error_first_batchbuffer(struct drm_i915_private *dev_priv,
1034 struct intel_ring_buffer *ring)
1036 struct drm_i915_gem_object *obj;
1039 if (!ring->get_seqno)
1042 seqno = ring->get_seqno(ring);
1043 list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) {
1044 if (obj->ring != ring)
1047 if (i915_seqno_passed(seqno, obj->last_rendering_seqno))
1050 if ((obj->base.read_domains & I915_GEM_DOMAIN_COMMAND) == 0)
1053 /* We need to copy these to an anonymous buffer as the simplest
1054 * method to avoid being overwritten by userspace.
1056 return i915_error_object_create(dev_priv, obj);
1062 static void i915_record_ring_state(struct drm_device *dev,
1063 struct drm_i915_error_state *error,
1064 struct intel_ring_buffer *ring)
1066 struct drm_i915_private *dev_priv = dev->dev_private;
1068 if (INTEL_INFO(dev)->gen >= 6) {
1069 error->fault_reg[ring->id] = I915_READ(RING_FAULT_REG(ring));
1070 error->semaphore_mboxes[ring->id][0]
1071 = I915_READ(RING_SYNC_0(ring->mmio_base));
1072 error->semaphore_mboxes[ring->id][1]
1073 = I915_READ(RING_SYNC_1(ring->mmio_base));
1076 if (INTEL_INFO(dev)->gen >= 4) {
1077 error->faddr[ring->id] = I915_READ(RING_DMA_FADD(ring->mmio_base));
1078 error->ipeir[ring->id] = I915_READ(RING_IPEIR(ring->mmio_base));
1079 error->ipehr[ring->id] = I915_READ(RING_IPEHR(ring->mmio_base));
1080 error->instdone[ring->id] = I915_READ(RING_INSTDONE(ring->mmio_base));
1081 error->instps[ring->id] = I915_READ(RING_INSTPS(ring->mmio_base));
1082 if (ring->id == RCS) {
1083 error->instdone1 = I915_READ(INSTDONE1);
1084 error->bbaddr = I915_READ64(BB_ADDR);
1087 error->faddr[ring->id] = I915_READ(DMA_FADD_I8XX);
1088 error->ipeir[ring->id] = I915_READ(IPEIR);
1089 error->ipehr[ring->id] = I915_READ(IPEHR);
1090 error->instdone[ring->id] = I915_READ(INSTDONE);
1093 error->waiting[ring->id] = waitqueue_active(&ring->irq_queue);
1094 error->instpm[ring->id] = I915_READ(RING_INSTPM(ring->mmio_base));
1095 error->seqno[ring->id] = ring->get_seqno(ring);
1096 error->acthd[ring->id] = intel_ring_get_active_head(ring);
1097 error->head[ring->id] = I915_READ_HEAD(ring);
1098 error->tail[ring->id] = I915_READ_TAIL(ring);
1100 error->cpu_ring_head[ring->id] = ring->head;
1101 error->cpu_ring_tail[ring->id] = ring->tail;
1104 static void i915_gem_record_rings(struct drm_device *dev,
1105 struct drm_i915_error_state *error)
1107 struct drm_i915_private *dev_priv = dev->dev_private;
1108 struct intel_ring_buffer *ring;
1109 struct drm_i915_gem_request *request;
1112 for_each_ring(ring, dev_priv, i) {
1113 i915_record_ring_state(dev, error, ring);
1115 error->ring[i].batchbuffer =
1116 i915_error_first_batchbuffer(dev_priv, ring);
1118 error->ring[i].ringbuffer =
1119 i915_error_object_create(dev_priv, ring->obj);
1122 list_for_each_entry(request, &ring->request_list, list)
1125 error->ring[i].num_requests = count;
1126 error->ring[i].requests =
1127 kmalloc(count*sizeof(struct drm_i915_error_request),
1129 if (error->ring[i].requests == NULL) {
1130 error->ring[i].num_requests = 0;
1135 list_for_each_entry(request, &ring->request_list, list) {
1136 struct drm_i915_error_request *erq;
1138 erq = &error->ring[i].requests[count++];
1139 erq->seqno = request->seqno;
1140 erq->jiffies = request->emitted_jiffies;
1141 erq->tail = request->tail;
1147 * i915_capture_error_state - capture an error record for later analysis
1150 * Should be called when an error is detected (either a hang or an error
1151 * interrupt) to capture error state from the time of the error. Fills
1152 * out a structure which becomes available in debugfs for user level tools
1155 static void i915_capture_error_state(struct drm_device *dev)
1157 struct drm_i915_private *dev_priv = dev->dev_private;
1158 struct drm_i915_gem_object *obj;
1159 struct drm_i915_error_state *error;
1160 unsigned long flags;
1163 spin_lock_irqsave(&dev_priv->error_lock, flags);
1164 error = dev_priv->first_error;
1165 spin_unlock_irqrestore(&dev_priv->error_lock, flags);
1169 /* Account for pipe specific data like PIPE*STAT */
1170 error = kzalloc(sizeof(*error), GFP_ATOMIC);
1172 DRM_DEBUG_DRIVER("out of memory, not capturing error state\n");
1176 DRM_INFO("capturing error event; look for more information in /debug/dri/%d/i915_error_state\n",
1177 dev->primary->index);
1179 kref_init(&error->ref);
1180 error->eir = I915_READ(EIR);
1181 error->pgtbl_er = I915_READ(PGTBL_ER);
1182 error->ccid = I915_READ(CCID);
1184 if (HAS_PCH_SPLIT(dev))
1185 error->ier = I915_READ(DEIER) | I915_READ(GTIER);
1186 else if (IS_VALLEYVIEW(dev))
1187 error->ier = I915_READ(GTIER) | I915_READ(VLV_IER);
1188 else if (IS_GEN2(dev))
1189 error->ier = I915_READ16(IER);
1191 error->ier = I915_READ(IER);
1194 error->pipestat[pipe] = I915_READ(PIPESTAT(pipe));
1196 if (INTEL_INFO(dev)->gen >= 6) {
1197 error->error = I915_READ(ERROR_GEN6);
1198 error->done_reg = I915_READ(DONE_REG);
1201 i915_gem_record_fences(dev, error);
1202 i915_gem_record_rings(dev, error);
1204 /* Record buffers on the active and pinned lists. */
1205 error->active_bo = NULL;
1206 error->pinned_bo = NULL;
1209 list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list)
1211 error->active_bo_count = i;
1212 list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list)
1215 error->pinned_bo_count = i - error->active_bo_count;
1217 error->active_bo = NULL;
1218 error->pinned_bo = NULL;
1220 error->active_bo = kmalloc(sizeof(*error->active_bo)*i,
1222 if (error->active_bo)
1224 error->active_bo + error->active_bo_count;
1227 if (error->active_bo)
1228 error->active_bo_count =
1229 capture_active_bo(error->active_bo,
1230 error->active_bo_count,
1231 &dev_priv->mm.active_list);
1233 if (error->pinned_bo)
1234 error->pinned_bo_count =
1235 capture_pinned_bo(error->pinned_bo,
1236 error->pinned_bo_count,
1237 &dev_priv->mm.gtt_list);
1239 do_gettimeofday(&error->time);
1241 error->overlay = intel_overlay_capture_error_state(dev);
1242 error->display = intel_display_capture_error_state(dev);
1244 spin_lock_irqsave(&dev_priv->error_lock, flags);
1245 if (dev_priv->first_error == NULL) {
1246 dev_priv->first_error = error;
1249 spin_unlock_irqrestore(&dev_priv->error_lock, flags);
1252 i915_error_state_free(&error->ref);
1255 void i915_destroy_error_state(struct drm_device *dev)
1257 struct drm_i915_private *dev_priv = dev->dev_private;
1258 struct drm_i915_error_state *error;
1259 unsigned long flags;
1261 spin_lock_irqsave(&dev_priv->error_lock, flags);
1262 error = dev_priv->first_error;
1263 dev_priv->first_error = NULL;
1264 spin_unlock_irqrestore(&dev_priv->error_lock, flags);
1267 kref_put(&error->ref, i915_error_state_free);
1270 #define i915_capture_error_state(x)
1273 static void i915_report_and_clear_eir(struct drm_device *dev)
1275 struct drm_i915_private *dev_priv = dev->dev_private;
1276 u32 eir = I915_READ(EIR);
1282 pr_err("render error detected, EIR: 0x%08x\n", eir);
1285 if (eir & (GM45_ERROR_MEM_PRIV | GM45_ERROR_CP_PRIV)) {
1286 u32 ipeir = I915_READ(IPEIR_I965);
1288 pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR_I965));
1289 pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR_I965));
1290 pr_err(" INSTDONE: 0x%08x\n",
1291 I915_READ(INSTDONE_I965));
1292 pr_err(" INSTPS: 0x%08x\n", I915_READ(INSTPS));
1293 pr_err(" INSTDONE1: 0x%08x\n", I915_READ(INSTDONE1));
1294 pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD_I965));
1295 I915_WRITE(IPEIR_I965, ipeir);
1296 POSTING_READ(IPEIR_I965);
1298 if (eir & GM45_ERROR_PAGE_TABLE) {
1299 u32 pgtbl_err = I915_READ(PGTBL_ER);
1300 pr_err("page table error\n");
1301 pr_err(" PGTBL_ER: 0x%08x\n", pgtbl_err);
1302 I915_WRITE(PGTBL_ER, pgtbl_err);
1303 POSTING_READ(PGTBL_ER);
1307 if (!IS_GEN2(dev)) {
1308 if (eir & I915_ERROR_PAGE_TABLE) {
1309 u32 pgtbl_err = I915_READ(PGTBL_ER);
1310 pr_err("page table error\n");
1311 pr_err(" PGTBL_ER: 0x%08x\n", pgtbl_err);
1312 I915_WRITE(PGTBL_ER, pgtbl_err);
1313 POSTING_READ(PGTBL_ER);
1317 if (eir & I915_ERROR_MEMORY_REFRESH) {
1318 pr_err("memory refresh error:\n");
1320 pr_err("pipe %c stat: 0x%08x\n",
1321 pipe_name(pipe), I915_READ(PIPESTAT(pipe)));
1322 /* pipestat has already been acked */
1324 if (eir & I915_ERROR_INSTRUCTION) {
1325 pr_err("instruction error\n");
1326 pr_err(" INSTPM: 0x%08x\n", I915_READ(INSTPM));
1327 if (INTEL_INFO(dev)->gen < 4) {
1328 u32 ipeir = I915_READ(IPEIR);
1330 pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR));
1331 pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR));
1332 pr_err(" INSTDONE: 0x%08x\n", I915_READ(INSTDONE));
1333 pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD));
1334 I915_WRITE(IPEIR, ipeir);
1335 POSTING_READ(IPEIR);
1337 u32 ipeir = I915_READ(IPEIR_I965);
1339 pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR_I965));
1340 pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR_I965));
1341 pr_err(" INSTDONE: 0x%08x\n",
1342 I915_READ(INSTDONE_I965));
1343 pr_err(" INSTPS: 0x%08x\n", I915_READ(INSTPS));
1344 pr_err(" INSTDONE1: 0x%08x\n", I915_READ(INSTDONE1));
1345 pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD_I965));
1346 I915_WRITE(IPEIR_I965, ipeir);
1347 POSTING_READ(IPEIR_I965);
1351 I915_WRITE(EIR, eir);
1353 eir = I915_READ(EIR);
1356 * some errors might have become stuck,
1359 DRM_ERROR("EIR stuck: 0x%08x, masking\n", eir);
1360 I915_WRITE(EMR, I915_READ(EMR) | eir);
1361 I915_WRITE(IIR, I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT);
1366 * i915_handle_error - handle an error interrupt
1369 * Do some basic checking of regsiter state at error interrupt time and
1370 * dump it to the syslog. Also call i915_capture_error_state() to make
1371 * sure we get a record and make it available in debugfs. Fire a uevent
1372 * so userspace knows something bad happened (should trigger collection
1373 * of a ring dump etc.).
1375 void i915_handle_error(struct drm_device *dev, bool wedged)
1377 struct drm_i915_private *dev_priv = dev->dev_private;
1378 struct intel_ring_buffer *ring;
1381 i915_capture_error_state(dev);
1382 i915_report_and_clear_eir(dev);
1385 INIT_COMPLETION(dev_priv->error_completion);
1386 atomic_set(&dev_priv->mm.wedged, 1);
1389 * Wakeup waiting processes so they don't hang
1391 for_each_ring(ring, dev_priv, i)
1392 wake_up_all(&ring->irq_queue);
1395 queue_work(dev_priv->wq, &dev_priv->error_work);
1398 static void i915_pageflip_stall_check(struct drm_device *dev, int pipe)
1400 drm_i915_private_t *dev_priv = dev->dev_private;
1401 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
1402 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1403 struct drm_i915_gem_object *obj;
1404 struct intel_unpin_work *work;
1405 unsigned long flags;
1406 bool stall_detected;
1408 /* Ignore early vblank irqs */
1409 if (intel_crtc == NULL)
1412 spin_lock_irqsave(&dev->event_lock, flags);
1413 work = intel_crtc->unpin_work;
1415 if (work == NULL || work->pending || !work->enable_stall_check) {
1416 /* Either the pending flip IRQ arrived, or we're too early. Don't check */
1417 spin_unlock_irqrestore(&dev->event_lock, flags);
1421 /* Potential stall - if we see that the flip has happened, assume a missed interrupt */
1422 obj = work->pending_flip_obj;
1423 if (INTEL_INFO(dev)->gen >= 4) {
1424 int dspsurf = DSPSURF(intel_crtc->plane);
1425 stall_detected = I915_HI_DISPBASE(I915_READ(dspsurf)) ==
1428 int dspaddr = DSPADDR(intel_crtc->plane);
1429 stall_detected = I915_READ(dspaddr) == (obj->gtt_offset +
1430 crtc->y * crtc->fb->pitches[0] +
1431 crtc->x * crtc->fb->bits_per_pixel/8);
1434 spin_unlock_irqrestore(&dev->event_lock, flags);
1436 if (stall_detected) {
1437 DRM_DEBUG_DRIVER("Pageflip stall detected\n");
1438 intel_prepare_page_flip(dev, intel_crtc->plane);
1442 /* Called from drm generic code, passed 'crtc' which
1443 * we use as a pipe index
1445 static int i915_enable_vblank(struct drm_device *dev, int pipe)
1447 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
1448 unsigned long irqflags;
1450 if (!i915_pipe_enabled(dev, pipe))
1453 spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
1454 if (INTEL_INFO(dev)->gen >= 4)
1455 i915_enable_pipestat(dev_priv, pipe,
1456 PIPE_START_VBLANK_INTERRUPT_ENABLE);
1458 i915_enable_pipestat(dev_priv, pipe,
1459 PIPE_VBLANK_INTERRUPT_ENABLE);
1461 /* maintain vblank delivery even in deep C-states */
1462 if (dev_priv->info->gen == 3)
1463 I915_WRITE(INSTPM, _MASKED_BIT_DISABLE(INSTPM_AGPBUSY_DIS));
1464 spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
1469 static int ironlake_enable_vblank(struct drm_device *dev, int pipe)
1471 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
1472 unsigned long irqflags;
1474 if (!i915_pipe_enabled(dev, pipe))
1477 spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
1478 ironlake_enable_display_irq(dev_priv, (pipe == 0) ?
1479 DE_PIPEA_VBLANK : DE_PIPEB_VBLANK);
1480 spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
1485 static int ivybridge_enable_vblank(struct drm_device *dev, int pipe)
1487 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
1488 unsigned long irqflags;
1490 if (!i915_pipe_enabled(dev, pipe))
1493 spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
1494 ironlake_enable_display_irq(dev_priv,
1495 DE_PIPEA_VBLANK_IVB << (5 * pipe));
1496 spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
1501 static int valleyview_enable_vblank(struct drm_device *dev, int pipe)
1503 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
1504 unsigned long irqflags;
1507 if (!i915_pipe_enabled(dev, pipe))
1510 spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
1511 imr = I915_READ(VLV_IMR);
1513 imr &= ~I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT;
1515 imr &= ~I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT;
1516 I915_WRITE(VLV_IMR, imr);
1517 i915_enable_pipestat(dev_priv, pipe,
1518 PIPE_START_VBLANK_INTERRUPT_ENABLE);
1519 spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
1524 /* Called from drm generic code, passed 'crtc' which
1525 * we use as a pipe index
1527 static void i915_disable_vblank(struct drm_device *dev, int pipe)
1529 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
1530 unsigned long irqflags;
1532 spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
1533 if (dev_priv->info->gen == 3)
1534 I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_AGPBUSY_DIS));
1536 i915_disable_pipestat(dev_priv, pipe,
1537 PIPE_VBLANK_INTERRUPT_ENABLE |
1538 PIPE_START_VBLANK_INTERRUPT_ENABLE);
1539 spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
1542 static void ironlake_disable_vblank(struct drm_device *dev, int pipe)
1544 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
1545 unsigned long irqflags;
1547 spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
1548 ironlake_disable_display_irq(dev_priv, (pipe == 0) ?
1549 DE_PIPEA_VBLANK : DE_PIPEB_VBLANK);
1550 spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
1553 static void ivybridge_disable_vblank(struct drm_device *dev, int pipe)
1555 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
1556 unsigned long irqflags;
1558 spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
1559 ironlake_disable_display_irq(dev_priv,
1560 DE_PIPEA_VBLANK_IVB << (pipe * 5));
1561 spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
1564 static void valleyview_disable_vblank(struct drm_device *dev, int pipe)
1566 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
1567 unsigned long irqflags;
1570 spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
1571 i915_disable_pipestat(dev_priv, pipe,
1572 PIPE_START_VBLANK_INTERRUPT_ENABLE);
1573 imr = I915_READ(VLV_IMR);
1575 imr |= I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT;
1577 imr |= I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT;
1578 I915_WRITE(VLV_IMR, imr);
1579 spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
1583 ring_last_seqno(struct intel_ring_buffer *ring)
1585 return list_entry(ring->request_list.prev,
1586 struct drm_i915_gem_request, list)->seqno;
1589 static bool i915_hangcheck_ring_idle(struct intel_ring_buffer *ring, bool *err)
1591 if (list_empty(&ring->request_list) ||
1592 i915_seqno_passed(ring->get_seqno(ring), ring_last_seqno(ring))) {
1593 /* Issue a wake-up to catch stuck h/w. */
1594 if (waitqueue_active(&ring->irq_queue)) {
1595 DRM_ERROR("Hangcheck timer elapsed... %s idle\n",
1597 wake_up_all(&ring->irq_queue);
1605 static bool kick_ring(struct intel_ring_buffer *ring)
1607 struct drm_device *dev = ring->dev;
1608 struct drm_i915_private *dev_priv = dev->dev_private;
1609 u32 tmp = I915_READ_CTL(ring);
1610 if (tmp & RING_WAIT) {
1611 DRM_ERROR("Kicking stuck wait on %s\n",
1613 I915_WRITE_CTL(ring, tmp);
1619 static bool i915_hangcheck_hung(struct drm_device *dev)
1621 drm_i915_private_t *dev_priv = dev->dev_private;
1623 if (dev_priv->hangcheck_count++ > 1) {
1626 DRM_ERROR("Hangcheck timer elapsed... GPU hung\n");
1627 i915_handle_error(dev, true);
1629 if (!IS_GEN2(dev)) {
1630 struct intel_ring_buffer *ring;
1633 /* Is the chip hanging on a WAIT_FOR_EVENT?
1634 * If so we can simply poke the RB_WAIT bit
1635 * and break the hang. This should work on
1636 * all but the second generation chipsets.
1638 for_each_ring(ring, dev_priv, i)
1639 hung &= !kick_ring(ring);
1649 * This is called when the chip hasn't reported back with completed
1650 * batchbuffers in a long time. The first time this is called we simply record
1651 * ACTHD. If ACTHD hasn't changed by the time the hangcheck timer elapses
1652 * again, we assume the chip is wedged and try to fix it.
1654 void i915_hangcheck_elapsed(unsigned long data)
1656 struct drm_device *dev = (struct drm_device *)data;
1657 drm_i915_private_t *dev_priv = dev->dev_private;
1658 uint32_t acthd[I915_NUM_RINGS], instdone, instdone1;
1659 struct intel_ring_buffer *ring;
1660 bool err = false, idle;
1663 if (!i915_enable_hangcheck)
1666 memset(acthd, 0, sizeof(acthd));
1668 for_each_ring(ring, dev_priv, i) {
1669 idle &= i915_hangcheck_ring_idle(ring, &err);
1670 acthd[i] = intel_ring_get_active_head(ring);
1673 /* If all work is done then ACTHD clearly hasn't advanced. */
1676 if (i915_hangcheck_hung(dev))
1682 dev_priv->hangcheck_count = 0;
1686 if (INTEL_INFO(dev)->gen < 4) {
1687 instdone = I915_READ(INSTDONE);
1690 instdone = I915_READ(INSTDONE_I965);
1691 instdone1 = I915_READ(INSTDONE1);
1694 if (memcmp(dev_priv->last_acthd, acthd, sizeof(acthd)) == 0 &&
1695 dev_priv->last_instdone == instdone &&
1696 dev_priv->last_instdone1 == instdone1) {
1697 if (i915_hangcheck_hung(dev))
1700 dev_priv->hangcheck_count = 0;
1702 memcpy(dev_priv->last_acthd, acthd, sizeof(acthd));
1703 dev_priv->last_instdone = instdone;
1704 dev_priv->last_instdone1 = instdone1;
1708 /* Reset timer case chip hangs without another request being added */
1709 mod_timer(&dev_priv->hangcheck_timer,
1710 jiffies + msecs_to_jiffies(DRM_I915_HANGCHECK_PERIOD));
1715 static void ironlake_irq_preinstall(struct drm_device *dev)
1717 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
1719 atomic_set(&dev_priv->irq_received, 0);
1721 I915_WRITE(HWSTAM, 0xeffe);
1723 /* XXX hotplug from PCH */
1725 I915_WRITE(DEIMR, 0xffffffff);
1726 I915_WRITE(DEIER, 0x0);
1727 POSTING_READ(DEIER);
1730 I915_WRITE(GTIMR, 0xffffffff);
1731 I915_WRITE(GTIER, 0x0);
1732 POSTING_READ(GTIER);
1734 /* south display irq */
1735 I915_WRITE(SDEIMR, 0xffffffff);
1736 I915_WRITE(SDEIER, 0x0);
1737 POSTING_READ(SDEIER);
1740 static void valleyview_irq_preinstall(struct drm_device *dev)
1742 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
1745 atomic_set(&dev_priv->irq_received, 0);
1748 I915_WRITE(VLV_IMR, 0);
1749 I915_WRITE(RING_IMR(RENDER_RING_BASE), 0);
1750 I915_WRITE(RING_IMR(GEN6_BSD_RING_BASE), 0);
1751 I915_WRITE(RING_IMR(BLT_RING_BASE), 0);
1754 I915_WRITE(GTIIR, I915_READ(GTIIR));
1755 I915_WRITE(GTIIR, I915_READ(GTIIR));
1756 I915_WRITE(GTIMR, 0xffffffff);
1757 I915_WRITE(GTIER, 0x0);
1758 POSTING_READ(GTIER);
1760 I915_WRITE(DPINVGTT, 0xff);
1762 I915_WRITE(PORT_HOTPLUG_EN, 0);
1763 I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT));
1765 I915_WRITE(PIPESTAT(pipe), 0xffff);
1766 I915_WRITE(VLV_IIR, 0xffffffff);
1767 I915_WRITE(VLV_IMR, 0xffffffff);
1768 I915_WRITE(VLV_IER, 0x0);
1769 POSTING_READ(VLV_IER);
1773 * Enable digital hotplug on the PCH, and configure the DP short pulse
1774 * duration to 2ms (which is the minimum in the Display Port spec)
1776 * This register is the same on all known PCH chips.
1779 static void ironlake_enable_pch_hotplug(struct drm_device *dev)
1781 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
1784 hotplug = I915_READ(PCH_PORT_HOTPLUG);
1785 hotplug &= ~(PORTD_PULSE_DURATION_MASK|PORTC_PULSE_DURATION_MASK|PORTB_PULSE_DURATION_MASK);
1786 hotplug |= PORTD_HOTPLUG_ENABLE | PORTD_PULSE_DURATION_2ms;
1787 hotplug |= PORTC_HOTPLUG_ENABLE | PORTC_PULSE_DURATION_2ms;
1788 hotplug |= PORTB_HOTPLUG_ENABLE | PORTB_PULSE_DURATION_2ms;
1789 I915_WRITE(PCH_PORT_HOTPLUG, hotplug);
1792 static int ironlake_irq_postinstall(struct drm_device *dev)
1794 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
1795 /* enable kind of interrupts always enabled */
1796 u32 display_mask = DE_MASTER_IRQ_CONTROL | DE_GSE | DE_PCH_EVENT |
1797 DE_PLANEA_FLIP_DONE | DE_PLANEB_FLIP_DONE;
1801 dev_priv->irq_mask = ~display_mask;
1803 /* should always can generate irq */
1804 I915_WRITE(DEIIR, I915_READ(DEIIR));
1805 I915_WRITE(DEIMR, dev_priv->irq_mask);
1806 I915_WRITE(DEIER, display_mask | DE_PIPEA_VBLANK | DE_PIPEB_VBLANK);
1807 POSTING_READ(DEIER);
1809 dev_priv->gt_irq_mask = ~0;
1811 I915_WRITE(GTIIR, I915_READ(GTIIR));
1812 I915_WRITE(GTIMR, dev_priv->gt_irq_mask);
1817 GEN6_BSD_USER_INTERRUPT |
1818 GEN6_BLITTER_USER_INTERRUPT;
1823 GT_BSD_USER_INTERRUPT;
1824 I915_WRITE(GTIER, render_irqs);
1825 POSTING_READ(GTIER);
1827 if (HAS_PCH_CPT(dev)) {
1828 hotplug_mask = (SDE_CRT_HOTPLUG_CPT |
1829 SDE_PORTB_HOTPLUG_CPT |
1830 SDE_PORTC_HOTPLUG_CPT |
1831 SDE_PORTD_HOTPLUG_CPT);
1833 hotplug_mask = (SDE_CRT_HOTPLUG |
1840 dev_priv->pch_irq_mask = ~hotplug_mask;
1842 I915_WRITE(SDEIIR, I915_READ(SDEIIR));
1843 I915_WRITE(SDEIMR, dev_priv->pch_irq_mask);
1844 I915_WRITE(SDEIER, hotplug_mask);
1845 POSTING_READ(SDEIER);
1847 ironlake_enable_pch_hotplug(dev);
1849 if (IS_IRONLAKE_M(dev)) {
1850 /* Clear & enable PCU event interrupts */
1851 I915_WRITE(DEIIR, DE_PCU_EVENT);
1852 I915_WRITE(DEIER, I915_READ(DEIER) | DE_PCU_EVENT);
1853 ironlake_enable_display_irq(dev_priv, DE_PCU_EVENT);
1859 static int ivybridge_irq_postinstall(struct drm_device *dev)
1861 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
1862 /* enable kind of interrupts always enabled */
1864 DE_MASTER_IRQ_CONTROL | DE_GSE_IVB | DE_PCH_EVENT_IVB |
1865 DE_PLANEC_FLIP_DONE_IVB |
1866 DE_PLANEB_FLIP_DONE_IVB |
1867 DE_PLANEA_FLIP_DONE_IVB;
1871 dev_priv->irq_mask = ~display_mask;
1873 /* should always can generate irq */
1874 I915_WRITE(DEIIR, I915_READ(DEIIR));
1875 I915_WRITE(DEIMR, dev_priv->irq_mask);
1878 DE_PIPEC_VBLANK_IVB |
1879 DE_PIPEB_VBLANK_IVB |
1880 DE_PIPEA_VBLANK_IVB);
1881 POSTING_READ(DEIER);
1883 dev_priv->gt_irq_mask = ~GT_GEN7_L3_PARITY_ERROR_INTERRUPT;
1885 I915_WRITE(GTIIR, I915_READ(GTIIR));
1886 I915_WRITE(GTIMR, dev_priv->gt_irq_mask);
1888 render_irqs = GT_USER_INTERRUPT | GEN6_BSD_USER_INTERRUPT |
1889 GEN6_BLITTER_USER_INTERRUPT | GT_GEN7_L3_PARITY_ERROR_INTERRUPT;
1890 I915_WRITE(GTIER, render_irqs);
1891 POSTING_READ(GTIER);
1893 hotplug_mask = (SDE_CRT_HOTPLUG_CPT |
1894 SDE_PORTB_HOTPLUG_CPT |
1895 SDE_PORTC_HOTPLUG_CPT |
1896 SDE_PORTD_HOTPLUG_CPT);
1897 dev_priv->pch_irq_mask = ~hotplug_mask;
1899 I915_WRITE(SDEIIR, I915_READ(SDEIIR));
1900 I915_WRITE(SDEIMR, dev_priv->pch_irq_mask);
1901 I915_WRITE(SDEIER, hotplug_mask);
1902 POSTING_READ(SDEIER);
1904 ironlake_enable_pch_hotplug(dev);
1909 static int valleyview_irq_postinstall(struct drm_device *dev)
1911 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
1913 u32 hotplug_en = I915_READ(PORT_HOTPLUG_EN);
1914 u32 pipestat_enable = PLANE_FLIP_DONE_INT_EN_VLV;
1917 enable_mask = I915_DISPLAY_PORT_INTERRUPT;
1918 enable_mask |= I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
1919 I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT |
1920 I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
1921 I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT;
1924 *Leave vblank interrupts masked initially. enable/disable will
1925 * toggle them based on usage.
1927 dev_priv->irq_mask = (~enable_mask) |
1928 I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT |
1929 I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT;
1931 dev_priv->pipestat[0] = 0;
1932 dev_priv->pipestat[1] = 0;
1934 /* Hack for broken MSIs on VLV */
1935 pci_write_config_dword(dev_priv->dev->pdev, 0x94, 0xfee00000);
1936 pci_read_config_word(dev->pdev, 0x98, &msid);
1937 msid &= 0xff; /* mask out delivery bits */
1939 pci_write_config_word(dev_priv->dev->pdev, 0x98, msid);
1941 I915_WRITE(VLV_IMR, dev_priv->irq_mask);
1942 I915_WRITE(VLV_IER, enable_mask);
1943 I915_WRITE(VLV_IIR, 0xffffffff);
1944 I915_WRITE(PIPESTAT(0), 0xffff);
1945 I915_WRITE(PIPESTAT(1), 0xffff);
1946 POSTING_READ(VLV_IER);
1948 i915_enable_pipestat(dev_priv, 0, pipestat_enable);
1949 i915_enable_pipestat(dev_priv, 1, pipestat_enable);
1951 I915_WRITE(VLV_IIR, 0xffffffff);
1952 I915_WRITE(VLV_IIR, 0xffffffff);
1954 dev_priv->gt_irq_mask = ~0;
1956 I915_WRITE(GTIIR, I915_READ(GTIIR));
1957 I915_WRITE(GTIIR, I915_READ(GTIIR));
1958 I915_WRITE(GTIMR, dev_priv->gt_irq_mask);
1959 I915_WRITE(GTIER, GT_GEN6_BLT_FLUSHDW_NOTIFY_INTERRUPT |
1960 GT_GEN6_BLT_CS_ERROR_INTERRUPT |
1961 GT_GEN6_BLT_USER_INTERRUPT |
1962 GT_GEN6_BSD_USER_INTERRUPT |
1963 GT_GEN6_BSD_CS_ERROR_INTERRUPT |
1964 GT_GEN7_L3_PARITY_ERROR_INTERRUPT |
1966 GT_RENDER_CS_ERROR_INTERRUPT |
1969 POSTING_READ(GTIER);
1971 /* ack & enable invalid PTE error interrupts */
1972 #if 0 /* FIXME: add support to irq handler for checking these bits */
1973 I915_WRITE(DPINVGTT, DPINVGTT_STATUS_MASK);
1974 I915_WRITE(DPINVGTT, DPINVGTT_EN_MASK);
1977 I915_WRITE(VLV_MASTER_IER, MASTER_INTERRUPT_ENABLE);
1978 #if 0 /* FIXME: check register definitions; some have moved */
1979 /* Note HDMI and DP share bits */
1980 if (dev_priv->hotplug_supported_mask & HDMIB_HOTPLUG_INT_STATUS)
1981 hotplug_en |= HDMIB_HOTPLUG_INT_EN;
1982 if (dev_priv->hotplug_supported_mask & HDMIC_HOTPLUG_INT_STATUS)
1983 hotplug_en |= HDMIC_HOTPLUG_INT_EN;
1984 if (dev_priv->hotplug_supported_mask & HDMID_HOTPLUG_INT_STATUS)
1985 hotplug_en |= HDMID_HOTPLUG_INT_EN;
1986 if (dev_priv->hotplug_supported_mask & SDVOC_HOTPLUG_INT_STATUS)
1987 hotplug_en |= SDVOC_HOTPLUG_INT_EN;
1988 if (dev_priv->hotplug_supported_mask & SDVOB_HOTPLUG_INT_STATUS)
1989 hotplug_en |= SDVOB_HOTPLUG_INT_EN;
1990 if (dev_priv->hotplug_supported_mask & CRT_HOTPLUG_INT_STATUS) {
1991 hotplug_en |= CRT_HOTPLUG_INT_EN;
1992 hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50;
1996 I915_WRITE(PORT_HOTPLUG_EN, hotplug_en);
2001 static void valleyview_irq_uninstall(struct drm_device *dev)
2003 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
2010 I915_WRITE(PIPESTAT(pipe), 0xffff);
2012 I915_WRITE(HWSTAM, 0xffffffff);
2013 I915_WRITE(PORT_HOTPLUG_EN, 0);
2014 I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT));
2016 I915_WRITE(PIPESTAT(pipe), 0xffff);
2017 I915_WRITE(VLV_IIR, 0xffffffff);
2018 I915_WRITE(VLV_IMR, 0xffffffff);
2019 I915_WRITE(VLV_IER, 0x0);
2020 POSTING_READ(VLV_IER);
2023 static void ironlake_irq_uninstall(struct drm_device *dev)
2025 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
2030 I915_WRITE(HWSTAM, 0xffffffff);
2032 I915_WRITE(DEIMR, 0xffffffff);
2033 I915_WRITE(DEIER, 0x0);
2034 I915_WRITE(DEIIR, I915_READ(DEIIR));
2036 I915_WRITE(GTIMR, 0xffffffff);
2037 I915_WRITE(GTIER, 0x0);
2038 I915_WRITE(GTIIR, I915_READ(GTIIR));
2040 I915_WRITE(SDEIMR, 0xffffffff);
2041 I915_WRITE(SDEIER, 0x0);
2042 I915_WRITE(SDEIIR, I915_READ(SDEIIR));
2045 static void i8xx_irq_preinstall(struct drm_device * dev)
2047 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
2050 atomic_set(&dev_priv->irq_received, 0);
2053 I915_WRITE(PIPESTAT(pipe), 0);
2054 I915_WRITE16(IMR, 0xffff);
2055 I915_WRITE16(IER, 0x0);
2056 POSTING_READ16(IER);
2059 static int i8xx_irq_postinstall(struct drm_device *dev)
2061 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
2063 dev_priv->pipestat[0] = 0;
2064 dev_priv->pipestat[1] = 0;
2067 ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH));
2069 /* Unmask the interrupts that we always want on. */
2070 dev_priv->irq_mask =
2071 ~(I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
2072 I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
2073 I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT |
2074 I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT |
2075 I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT);
2076 I915_WRITE16(IMR, dev_priv->irq_mask);
2079 I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
2080 I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
2081 I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT |
2082 I915_USER_INTERRUPT);
2083 POSTING_READ16(IER);
2088 static irqreturn_t i8xx_irq_handler(DRM_IRQ_ARGS)
2090 struct drm_device *dev = (struct drm_device *) arg;
2091 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
2094 unsigned long irqflags;
2098 I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT |
2099 I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT;
2101 atomic_inc(&dev_priv->irq_received);
2103 iir = I915_READ16(IIR);
2107 while (iir & ~flip_mask) {
2108 /* Can't rely on pipestat interrupt bit in iir as it might
2109 * have been cleared after the pipestat interrupt was received.
2110 * It doesn't set the bit in iir again, but it still produces
2111 * interrupts (for non-MSI).
2113 spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
2114 if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT)
2115 i915_handle_error(dev, false);
2117 for_each_pipe(pipe) {
2118 int reg = PIPESTAT(pipe);
2119 pipe_stats[pipe] = I915_READ(reg);
2122 * Clear the PIPE*STAT regs before the IIR
2124 if (pipe_stats[pipe] & 0x8000ffff) {
2125 if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
2126 DRM_DEBUG_DRIVER("pipe %c underrun\n",
2128 I915_WRITE(reg, pipe_stats[pipe]);
2132 spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
2134 I915_WRITE16(IIR, iir & ~flip_mask);
2135 new_iir = I915_READ16(IIR); /* Flush posted writes */
2137 i915_update_dri1_breadcrumb(dev);
2139 if (iir & I915_USER_INTERRUPT)
2140 notify_ring(dev, &dev_priv->ring[RCS]);
2142 if (pipe_stats[0] & PIPE_VBLANK_INTERRUPT_STATUS &&
2143 drm_handle_vblank(dev, 0)) {
2144 if (iir & I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT) {
2145 intel_prepare_page_flip(dev, 0);
2146 intel_finish_page_flip(dev, 0);
2147 flip_mask &= ~I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT;
2151 if (pipe_stats[1] & PIPE_VBLANK_INTERRUPT_STATUS &&
2152 drm_handle_vblank(dev, 1)) {
2153 if (iir & I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT) {
2154 intel_prepare_page_flip(dev, 1);
2155 intel_finish_page_flip(dev, 1);
2156 flip_mask &= ~I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT;
2166 static void i8xx_irq_uninstall(struct drm_device * dev)
2168 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
2171 for_each_pipe(pipe) {
2172 /* Clear enable bits; then clear status bits */
2173 I915_WRITE(PIPESTAT(pipe), 0);
2174 I915_WRITE(PIPESTAT(pipe), I915_READ(PIPESTAT(pipe)));
2176 I915_WRITE16(IMR, 0xffff);
2177 I915_WRITE16(IER, 0x0);
2178 I915_WRITE16(IIR, I915_READ16(IIR));
2181 static void i915_irq_preinstall(struct drm_device * dev)
2183 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
2186 atomic_set(&dev_priv->irq_received, 0);
2188 if (I915_HAS_HOTPLUG(dev)) {
2189 I915_WRITE(PORT_HOTPLUG_EN, 0);
2190 I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT));
2193 I915_WRITE16(HWSTAM, 0xeffe);
2195 I915_WRITE(PIPESTAT(pipe), 0);
2196 I915_WRITE(IMR, 0xffffffff);
2197 I915_WRITE(IER, 0x0);
2201 static int i915_irq_postinstall(struct drm_device *dev)
2203 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
2206 dev_priv->pipestat[0] = 0;
2207 dev_priv->pipestat[1] = 0;
2209 I915_WRITE(EMR, ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH));
2211 /* Unmask the interrupts that we always want on. */
2212 dev_priv->irq_mask =
2213 ~(I915_ASLE_INTERRUPT |
2214 I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
2215 I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
2216 I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT |
2217 I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT |
2218 I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT);
2221 I915_ASLE_INTERRUPT |
2222 I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
2223 I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
2224 I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT |
2225 I915_USER_INTERRUPT;
2227 if (I915_HAS_HOTPLUG(dev)) {
2228 /* Enable in IER... */
2229 enable_mask |= I915_DISPLAY_PORT_INTERRUPT;
2230 /* and unmask in IMR */
2231 dev_priv->irq_mask &= ~I915_DISPLAY_PORT_INTERRUPT;
2234 I915_WRITE(IMR, dev_priv->irq_mask);
2235 I915_WRITE(IER, enable_mask);
2238 if (I915_HAS_HOTPLUG(dev)) {
2239 u32 hotplug_en = I915_READ(PORT_HOTPLUG_EN);
2241 if (dev_priv->hotplug_supported_mask & HDMIB_HOTPLUG_INT_STATUS)
2242 hotplug_en |= HDMIB_HOTPLUG_INT_EN;
2243 if (dev_priv->hotplug_supported_mask & HDMIC_HOTPLUG_INT_STATUS)
2244 hotplug_en |= HDMIC_HOTPLUG_INT_EN;
2245 if (dev_priv->hotplug_supported_mask & HDMID_HOTPLUG_INT_STATUS)
2246 hotplug_en |= HDMID_HOTPLUG_INT_EN;
2247 if (dev_priv->hotplug_supported_mask & SDVOC_HOTPLUG_INT_STATUS_I915)
2248 hotplug_en |= SDVOC_HOTPLUG_INT_EN;
2249 if (dev_priv->hotplug_supported_mask & SDVOB_HOTPLUG_INT_STATUS_I915)
2250 hotplug_en |= SDVOB_HOTPLUG_INT_EN;
2251 if (dev_priv->hotplug_supported_mask & CRT_HOTPLUG_INT_STATUS) {
2252 hotplug_en |= CRT_HOTPLUG_INT_EN;
2253 hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50;
2256 /* Ignore TV since it's buggy */
2258 I915_WRITE(PORT_HOTPLUG_EN, hotplug_en);
2261 intel_opregion_enable_asle(dev);
2266 static irqreturn_t i915_irq_handler(DRM_IRQ_ARGS)
2268 struct drm_device *dev = (struct drm_device *) arg;
2269 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
2270 u32 iir, new_iir, pipe_stats[I915_MAX_PIPES];
2271 unsigned long irqflags;
2273 I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT |
2274 I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT;
2276 I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT,
2277 I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT
2279 int pipe, ret = IRQ_NONE;
2281 atomic_inc(&dev_priv->irq_received);
2283 iir = I915_READ(IIR);
2285 bool irq_received = (iir & ~flip_mask) != 0;
2286 bool blc_event = false;
2288 /* Can't rely on pipestat interrupt bit in iir as it might
2289 * have been cleared after the pipestat interrupt was received.
2290 * It doesn't set the bit in iir again, but it still produces
2291 * interrupts (for non-MSI).
2293 spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
2294 if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT)
2295 i915_handle_error(dev, false);
2297 for_each_pipe(pipe) {
2298 int reg = PIPESTAT(pipe);
2299 pipe_stats[pipe] = I915_READ(reg);
2301 /* Clear the PIPE*STAT regs before the IIR */
2302 if (pipe_stats[pipe] & 0x8000ffff) {
2303 if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
2304 DRM_DEBUG_DRIVER("pipe %c underrun\n",
2306 I915_WRITE(reg, pipe_stats[pipe]);
2307 irq_received = true;
2310 spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
2315 /* Consume port. Then clear IIR or we'll miss events */
2316 if ((I915_HAS_HOTPLUG(dev)) &&
2317 (iir & I915_DISPLAY_PORT_INTERRUPT)) {
2318 u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT);
2320 DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n",
2322 if (hotplug_status & dev_priv->hotplug_supported_mask)
2323 queue_work(dev_priv->wq,
2324 &dev_priv->hotplug_work);
2326 I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status);
2327 POSTING_READ(PORT_HOTPLUG_STAT);
2330 I915_WRITE(IIR, iir & ~flip_mask);
2331 new_iir = I915_READ(IIR); /* Flush posted writes */
2333 if (iir & I915_USER_INTERRUPT)
2334 notify_ring(dev, &dev_priv->ring[RCS]);
2336 for_each_pipe(pipe) {
2340 if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS &&
2341 drm_handle_vblank(dev, pipe)) {
2342 if (iir & flip[plane]) {
2343 intel_prepare_page_flip(dev, plane);
2344 intel_finish_page_flip(dev, pipe);
2345 flip_mask &= ~flip[plane];
2349 if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
2353 if (blc_event || (iir & I915_ASLE_INTERRUPT))
2354 intel_opregion_asle_intr(dev);
2356 /* With MSI, interrupts are only generated when iir
2357 * transitions from zero to nonzero. If another bit got
2358 * set while we were handling the existing iir bits, then
2359 * we would never get another interrupt.
2361 * This is fine on non-MSI as well, as if we hit this path
2362 * we avoid exiting the interrupt handler only to generate
2365 * Note that for MSI this could cause a stray interrupt report
2366 * if an interrupt landed in the time between writing IIR and
2367 * the posting read. This should be rare enough to never
2368 * trigger the 99% of 100,000 interrupts test for disabling
2373 } while (iir & ~flip_mask);
2375 i915_update_dri1_breadcrumb(dev);
2380 static void i915_irq_uninstall(struct drm_device * dev)
2382 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
2385 if (I915_HAS_HOTPLUG(dev)) {
2386 I915_WRITE(PORT_HOTPLUG_EN, 0);
2387 I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT));
2390 I915_WRITE16(HWSTAM, 0xffff);
2391 for_each_pipe(pipe) {
2392 /* Clear enable bits; then clear status bits */
2393 I915_WRITE(PIPESTAT(pipe), 0);
2394 I915_WRITE(PIPESTAT(pipe), I915_READ(PIPESTAT(pipe)));
2396 I915_WRITE(IMR, 0xffffffff);
2397 I915_WRITE(IER, 0x0);
2399 I915_WRITE(IIR, I915_READ(IIR));
2402 static void i965_irq_preinstall(struct drm_device * dev)
2404 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
2407 atomic_set(&dev_priv->irq_received, 0);
2409 I915_WRITE(PORT_HOTPLUG_EN, 0);
2410 I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT));
2412 I915_WRITE(HWSTAM, 0xeffe);
2414 I915_WRITE(PIPESTAT(pipe), 0);
2415 I915_WRITE(IMR, 0xffffffff);
2416 I915_WRITE(IER, 0x0);
2420 static int i965_irq_postinstall(struct drm_device *dev)
2422 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
2427 /* Unmask the interrupts that we always want on. */
2428 dev_priv->irq_mask = ~(I915_ASLE_INTERRUPT |
2429 I915_DISPLAY_PORT_INTERRUPT |
2430 I915_DISPLAY_PIPE_A_EVENT_INTERRUPT |
2431 I915_DISPLAY_PIPE_B_EVENT_INTERRUPT |
2432 I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT |
2433 I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT |
2434 I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT);
2436 enable_mask = ~dev_priv->irq_mask;
2437 enable_mask |= I915_USER_INTERRUPT;
2440 enable_mask |= I915_BSD_USER_INTERRUPT;
2442 dev_priv->pipestat[0] = 0;
2443 dev_priv->pipestat[1] = 0;
2446 * Enable some error detection, note the instruction error mask
2447 * bit is reserved, so we leave it masked.
2450 error_mask = ~(GM45_ERROR_PAGE_TABLE |
2451 GM45_ERROR_MEM_PRIV |
2452 GM45_ERROR_CP_PRIV |
2453 I915_ERROR_MEMORY_REFRESH);
2455 error_mask = ~(I915_ERROR_PAGE_TABLE |
2456 I915_ERROR_MEMORY_REFRESH);
2458 I915_WRITE(EMR, error_mask);
2460 I915_WRITE(IMR, dev_priv->irq_mask);
2461 I915_WRITE(IER, enable_mask);
2464 /* Note HDMI and DP share hotplug bits */
2466 if (dev_priv->hotplug_supported_mask & HDMIB_HOTPLUG_INT_STATUS)
2467 hotplug_en |= HDMIB_HOTPLUG_INT_EN;
2468 if (dev_priv->hotplug_supported_mask & HDMIC_HOTPLUG_INT_STATUS)
2469 hotplug_en |= HDMIC_HOTPLUG_INT_EN;
2470 if (dev_priv->hotplug_supported_mask & HDMID_HOTPLUG_INT_STATUS)
2471 hotplug_en |= HDMID_HOTPLUG_INT_EN;
2473 if (dev_priv->hotplug_supported_mask & SDVOC_HOTPLUG_INT_STATUS_G4X)
2474 hotplug_en |= SDVOC_HOTPLUG_INT_EN;
2475 if (dev_priv->hotplug_supported_mask & SDVOB_HOTPLUG_INT_STATUS_G4X)
2476 hotplug_en |= SDVOB_HOTPLUG_INT_EN;
2478 if (dev_priv->hotplug_supported_mask & SDVOC_HOTPLUG_INT_STATUS_I965)
2479 hotplug_en |= SDVOC_HOTPLUG_INT_EN;
2480 if (dev_priv->hotplug_supported_mask & SDVOB_HOTPLUG_INT_STATUS_I965)
2481 hotplug_en |= SDVOB_HOTPLUG_INT_EN;
2483 if (dev_priv->hotplug_supported_mask & CRT_HOTPLUG_INT_STATUS) {
2484 hotplug_en |= CRT_HOTPLUG_INT_EN;
2486 /* Programming the CRT detection parameters tends
2487 to generate a spurious hotplug event about three
2488 seconds later. So just do it once.
2491 hotplug_en |= CRT_HOTPLUG_ACTIVATION_PERIOD_64;
2492 hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50;
2495 /* Ignore TV since it's buggy */
2497 I915_WRITE(PORT_HOTPLUG_EN, hotplug_en);
2499 intel_opregion_enable_asle(dev);
2504 static irqreturn_t i965_irq_handler(DRM_IRQ_ARGS)
2506 struct drm_device *dev = (struct drm_device *) arg;
2507 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
2509 u32 pipe_stats[I915_MAX_PIPES];
2510 unsigned long irqflags;
2512 int ret = IRQ_NONE, pipe;
2514 atomic_inc(&dev_priv->irq_received);
2516 iir = I915_READ(IIR);
2519 bool blc_event = false;
2521 irq_received = iir != 0;
2523 /* Can't rely on pipestat interrupt bit in iir as it might
2524 * have been cleared after the pipestat interrupt was received.
2525 * It doesn't set the bit in iir again, but it still produces
2526 * interrupts (for non-MSI).
2528 spin_lock_irqsave(&dev_priv->irq_lock, irqflags);
2529 if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT)
2530 i915_handle_error(dev, false);
2532 for_each_pipe(pipe) {
2533 int reg = PIPESTAT(pipe);
2534 pipe_stats[pipe] = I915_READ(reg);
2537 * Clear the PIPE*STAT regs before the IIR
2539 if (pipe_stats[pipe] & 0x8000ffff) {
2540 if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS)
2541 DRM_DEBUG_DRIVER("pipe %c underrun\n",
2543 I915_WRITE(reg, pipe_stats[pipe]);
2547 spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags);
2554 /* Consume port. Then clear IIR or we'll miss events */
2555 if (iir & I915_DISPLAY_PORT_INTERRUPT) {
2556 u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT);
2558 DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n",
2560 if (hotplug_status & dev_priv->hotplug_supported_mask)
2561 queue_work(dev_priv->wq,
2562 &dev_priv->hotplug_work);
2564 I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status);
2565 I915_READ(PORT_HOTPLUG_STAT);
2568 I915_WRITE(IIR, iir);
2569 new_iir = I915_READ(IIR); /* Flush posted writes */
2571 if (iir & I915_USER_INTERRUPT)
2572 notify_ring(dev, &dev_priv->ring[RCS]);
2573 if (iir & I915_BSD_USER_INTERRUPT)
2574 notify_ring(dev, &dev_priv->ring[VCS]);
2576 if (iir & I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT)
2577 intel_prepare_page_flip(dev, 0);
2579 if (iir & I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT)
2580 intel_prepare_page_flip(dev, 1);
2582 for_each_pipe(pipe) {
2583 if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS &&
2584 drm_handle_vblank(dev, pipe)) {
2585 i915_pageflip_stall_check(dev, pipe);
2586 intel_finish_page_flip(dev, pipe);
2589 if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS)
2594 if (blc_event || (iir & I915_ASLE_INTERRUPT))
2595 intel_opregion_asle_intr(dev);
2597 /* With MSI, interrupts are only generated when iir
2598 * transitions from zero to nonzero. If another bit got
2599 * set while we were handling the existing iir bits, then
2600 * we would never get another interrupt.
2602 * This is fine on non-MSI as well, as if we hit this path
2603 * we avoid exiting the interrupt handler only to generate
2606 * Note that for MSI this could cause a stray interrupt report
2607 * if an interrupt landed in the time between writing IIR and
2608 * the posting read. This should be rare enough to never
2609 * trigger the 99% of 100,000 interrupts test for disabling
2615 i915_update_dri1_breadcrumb(dev);
2620 static void i965_irq_uninstall(struct drm_device * dev)
2622 drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
2628 I915_WRITE(PORT_HOTPLUG_EN, 0);
2629 I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT));
2631 I915_WRITE(HWSTAM, 0xffffffff);
2633 I915_WRITE(PIPESTAT(pipe), 0);
2634 I915_WRITE(IMR, 0xffffffff);
2635 I915_WRITE(IER, 0x0);
2638 I915_WRITE(PIPESTAT(pipe),
2639 I915_READ(PIPESTAT(pipe)) & 0x8000ffff);
2640 I915_WRITE(IIR, I915_READ(IIR));
2643 void intel_irq_init(struct drm_device *dev)
2645 struct drm_i915_private *dev_priv = dev->dev_private;
2647 INIT_WORK(&dev_priv->hotplug_work, i915_hotplug_work_func);
2648 INIT_WORK(&dev_priv->error_work, i915_error_work_func);
2649 INIT_WORK(&dev_priv->rps_work, gen6_pm_rps_work);
2650 INIT_WORK(&dev_priv->parity_error_work, ivybridge_parity_work);
2652 dev->driver->get_vblank_counter = i915_get_vblank_counter;
2653 dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
2654 if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) {
2655 dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
2656 dev->driver->get_vblank_counter = gm45_get_vblank_counter;
2659 if (drm_core_check_feature(dev, DRIVER_MODESET))
2660 dev->driver->get_vblank_timestamp = i915_get_vblank_timestamp;
2662 dev->driver->get_vblank_timestamp = NULL;
2663 dev->driver->get_scanout_position = i915_get_crtc_scanoutpos;
2665 if (IS_VALLEYVIEW(dev)) {
2666 dev->driver->irq_handler = valleyview_irq_handler;
2667 dev->driver->irq_preinstall = valleyview_irq_preinstall;
2668 dev->driver->irq_postinstall = valleyview_irq_postinstall;
2669 dev->driver->irq_uninstall = valleyview_irq_uninstall;
2670 dev->driver->enable_vblank = valleyview_enable_vblank;
2671 dev->driver->disable_vblank = valleyview_disable_vblank;
2672 } else if (IS_IVYBRIDGE(dev)) {
2673 /* Share pre & uninstall handlers with ILK/SNB */
2674 dev->driver->irq_handler = ivybridge_irq_handler;
2675 dev->driver->irq_preinstall = ironlake_irq_preinstall;
2676 dev->driver->irq_postinstall = ivybridge_irq_postinstall;
2677 dev->driver->irq_uninstall = ironlake_irq_uninstall;
2678 dev->driver->enable_vblank = ivybridge_enable_vblank;
2679 dev->driver->disable_vblank = ivybridge_disable_vblank;
2680 } else if (IS_HASWELL(dev)) {
2681 /* Share interrupts handling with IVB */
2682 dev->driver->irq_handler = ivybridge_irq_handler;
2683 dev->driver->irq_preinstall = ironlake_irq_preinstall;
2684 dev->driver->irq_postinstall = ivybridge_irq_postinstall;
2685 dev->driver->irq_uninstall = ironlake_irq_uninstall;
2686 dev->driver->enable_vblank = ivybridge_enable_vblank;
2687 dev->driver->disable_vblank = ivybridge_disable_vblank;
2688 } else if (HAS_PCH_SPLIT(dev)) {
2689 dev->driver->irq_handler = ironlake_irq_handler;
2690 dev->driver->irq_preinstall = ironlake_irq_preinstall;
2691 dev->driver->irq_postinstall = ironlake_irq_postinstall;
2692 dev->driver->irq_uninstall = ironlake_irq_uninstall;
2693 dev->driver->enable_vblank = ironlake_enable_vblank;
2694 dev->driver->disable_vblank = ironlake_disable_vblank;
2696 if (INTEL_INFO(dev)->gen == 2) {
2697 dev->driver->irq_preinstall = i8xx_irq_preinstall;
2698 dev->driver->irq_postinstall = i8xx_irq_postinstall;
2699 dev->driver->irq_handler = i8xx_irq_handler;
2700 dev->driver->irq_uninstall = i8xx_irq_uninstall;
2701 } else if (INTEL_INFO(dev)->gen == 3) {
2702 /* IIR "flip pending" means done if this bit is set */
2703 I915_WRITE(ECOSKPD, _MASKED_BIT_DISABLE(ECO_FLIP_DONE));
2705 dev->driver->irq_preinstall = i915_irq_preinstall;
2706 dev->driver->irq_postinstall = i915_irq_postinstall;
2707 dev->driver->irq_uninstall = i915_irq_uninstall;
2708 dev->driver->irq_handler = i915_irq_handler;
2710 dev->driver->irq_preinstall = i965_irq_preinstall;
2711 dev->driver->irq_postinstall = i965_irq_postinstall;
2712 dev->driver->irq_uninstall = i965_irq_uninstall;
2713 dev->driver->irq_handler = i965_irq_handler;
2715 dev->driver->enable_vblank = i915_enable_vblank;
2716 dev->driver->disable_vblank = i915_disable_vblank;