Dave Airlie | 0d6aa60 | 2006-01-02 20:14:23 +1100 | [diff] [blame] | 1 | /* i915_irq.c -- IRQ support for the I915 -*- linux-c -*- |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | */ |
Dave Airlie | 0d6aa60 | 2006-01-02 20:14:23 +1100 | [diff] [blame] | 3 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. |
| 5 | * All Rights Reserved. |
Dave Airlie | bc54fd1 | 2005-06-23 22:46:46 +1000 | [diff] [blame] | 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 | * |
Dave Airlie | 0d6aa60 | 2006-01-02 20:14:23 +1100 | [diff] [blame] | 27 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | |
Joe Perches | a70491c | 2012-03-18 13:00:11 -0700 | [diff] [blame] | 29 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 30 | |
Jesse Barnes | 63eeaf3 | 2009-06-18 16:56:52 -0700 | [diff] [blame] | 31 | #include <linux/sysrq.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 32 | #include <linux/slab.h> |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 33 | #include <drm/drmP.h> |
| 34 | #include <drm/i915_drm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #include "i915_drv.h" |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 36 | #include "i915_trace.h" |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 37 | #include "intel_drv.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
Egbert Eich | e5868a3 | 2013-02-28 04:17:12 -0500 | [diff] [blame] | 39 | static const u32 hpd_ibx[] = { |
| 40 | [HPD_CRT] = SDE_CRT_HOTPLUG, |
| 41 | [HPD_SDVO_B] = SDE_SDVOB_HOTPLUG, |
| 42 | [HPD_PORT_B] = SDE_PORTB_HOTPLUG, |
| 43 | [HPD_PORT_C] = SDE_PORTC_HOTPLUG, |
| 44 | [HPD_PORT_D] = SDE_PORTD_HOTPLUG |
| 45 | }; |
| 46 | |
| 47 | static const u32 hpd_cpt[] = { |
| 48 | [HPD_CRT] = SDE_CRT_HOTPLUG_CPT, |
Daniel Vetter | 73c352a | 2013-03-26 22:38:43 +0100 | [diff] [blame] | 49 | [HPD_SDVO_B] = SDE_SDVOB_HOTPLUG_CPT, |
Egbert Eich | e5868a3 | 2013-02-28 04:17:12 -0500 | [diff] [blame] | 50 | [HPD_PORT_B] = SDE_PORTB_HOTPLUG_CPT, |
| 51 | [HPD_PORT_C] = SDE_PORTC_HOTPLUG_CPT, |
| 52 | [HPD_PORT_D] = SDE_PORTD_HOTPLUG_CPT |
| 53 | }; |
| 54 | |
| 55 | static const u32 hpd_mask_i915[] = { |
| 56 | [HPD_CRT] = CRT_HOTPLUG_INT_EN, |
| 57 | [HPD_SDVO_B] = SDVOB_HOTPLUG_INT_EN, |
| 58 | [HPD_SDVO_C] = SDVOC_HOTPLUG_INT_EN, |
| 59 | [HPD_PORT_B] = PORTB_HOTPLUG_INT_EN, |
| 60 | [HPD_PORT_C] = PORTC_HOTPLUG_INT_EN, |
| 61 | [HPD_PORT_D] = PORTD_HOTPLUG_INT_EN |
| 62 | }; |
| 63 | |
| 64 | static const u32 hpd_status_gen4[] = { |
| 65 | [HPD_CRT] = CRT_HOTPLUG_INT_STATUS, |
| 66 | [HPD_SDVO_B] = SDVOB_HOTPLUG_INT_STATUS_G4X, |
| 67 | [HPD_SDVO_C] = SDVOC_HOTPLUG_INT_STATUS_G4X, |
| 68 | [HPD_PORT_B] = PORTB_HOTPLUG_INT_STATUS, |
| 69 | [HPD_PORT_C] = PORTC_HOTPLUG_INT_STATUS, |
| 70 | [HPD_PORT_D] = PORTD_HOTPLUG_INT_STATUS |
| 71 | }; |
| 72 | |
| 73 | static const u32 hpd_status_i965[] = { |
| 74 | [HPD_CRT] = CRT_HOTPLUG_INT_STATUS, |
| 75 | [HPD_SDVO_B] = SDVOB_HOTPLUG_INT_STATUS_I965, |
| 76 | [HPD_SDVO_C] = SDVOC_HOTPLUG_INT_STATUS_I965, |
| 77 | [HPD_PORT_B] = PORTB_HOTPLUG_INT_STATUS, |
| 78 | [HPD_PORT_C] = PORTC_HOTPLUG_INT_STATUS, |
| 79 | [HPD_PORT_D] = PORTD_HOTPLUG_INT_STATUS |
| 80 | }; |
| 81 | |
| 82 | static const u32 hpd_status_i915[] = { /* i915 and valleyview are the same */ |
| 83 | [HPD_CRT] = CRT_HOTPLUG_INT_STATUS, |
| 84 | [HPD_SDVO_B] = SDVOB_HOTPLUG_INT_STATUS_I915, |
| 85 | [HPD_SDVO_C] = SDVOC_HOTPLUG_INT_STATUS_I915, |
| 86 | [HPD_PORT_B] = PORTB_HOTPLUG_INT_STATUS, |
| 87 | [HPD_PORT_C] = PORTC_HOTPLUG_INT_STATUS, |
| 88 | [HPD_PORT_D] = PORTD_HOTPLUG_INT_STATUS |
| 89 | }; |
| 90 | |
| 91 | |
| 92 | |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 93 | /* For display hotplug interrupt */ |
Chris Wilson | 995b676 | 2010-08-20 13:23:26 +0100 | [diff] [blame] | 94 | static void |
Adam Jackson | f2b115e | 2009-12-03 17:14:42 -0500 | [diff] [blame] | 95 | ironlake_enable_display_irq(drm_i915_private_t *dev_priv, u32 mask) |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 96 | { |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 97 | if ((dev_priv->irq_mask & mask) != 0) { |
| 98 | dev_priv->irq_mask &= ~mask; |
| 99 | I915_WRITE(DEIMR, dev_priv->irq_mask); |
Chris Wilson | 3143a2b | 2010-11-16 15:55:10 +0000 | [diff] [blame] | 100 | POSTING_READ(DEIMR); |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 101 | } |
| 102 | } |
| 103 | |
Paulo Zanoni | 0ff9800 | 2013-02-22 17:05:31 -0300 | [diff] [blame] | 104 | static void |
Adam Jackson | f2b115e | 2009-12-03 17:14:42 -0500 | [diff] [blame] | 105 | ironlake_disable_display_irq(drm_i915_private_t *dev_priv, u32 mask) |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 106 | { |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 107 | if ((dev_priv->irq_mask & mask) != mask) { |
| 108 | dev_priv->irq_mask |= mask; |
| 109 | I915_WRITE(DEIMR, dev_priv->irq_mask); |
Chris Wilson | 3143a2b | 2010-11-16 15:55:10 +0000 | [diff] [blame] | 110 | POSTING_READ(DEIMR); |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 111 | } |
| 112 | } |
| 113 | |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 114 | void |
| 115 | i915_enable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask) |
| 116 | { |
Ville Syrjälä | 46c06a3 | 2013-02-20 21:16:18 +0200 | [diff] [blame] | 117 | u32 reg = PIPESTAT(pipe); |
| 118 | u32 pipestat = I915_READ(reg) & 0x7fff0000; |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 119 | |
Ville Syrjälä | 46c06a3 | 2013-02-20 21:16:18 +0200 | [diff] [blame] | 120 | if ((pipestat & mask) == mask) |
| 121 | return; |
| 122 | |
| 123 | /* Enable the interrupt, clear any pending status */ |
| 124 | pipestat |= mask | (mask >> 16); |
| 125 | I915_WRITE(reg, pipestat); |
| 126 | POSTING_READ(reg); |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 127 | } |
| 128 | |
| 129 | void |
| 130 | i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask) |
| 131 | { |
Ville Syrjälä | 46c06a3 | 2013-02-20 21:16:18 +0200 | [diff] [blame] | 132 | u32 reg = PIPESTAT(pipe); |
| 133 | u32 pipestat = I915_READ(reg) & 0x7fff0000; |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 134 | |
Ville Syrjälä | 46c06a3 | 2013-02-20 21:16:18 +0200 | [diff] [blame] | 135 | if ((pipestat & mask) == 0) |
| 136 | return; |
| 137 | |
| 138 | pipestat &= ~mask; |
| 139 | I915_WRITE(reg, pipestat); |
| 140 | POSTING_READ(reg); |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 141 | } |
| 142 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 143 | /** |
Zhao Yakui | 01c6688 | 2009-10-28 05:10:00 +0000 | [diff] [blame] | 144 | * intel_enable_asle - enable ASLE interrupt for OpRegion |
| 145 | */ |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 146 | void intel_enable_asle(struct drm_device *dev) |
Zhao Yakui | 01c6688 | 2009-10-28 05:10:00 +0000 | [diff] [blame] | 147 | { |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 148 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 149 | unsigned long irqflags; |
| 150 | |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 151 | /* FIXME: opregion/asle for VLV */ |
| 152 | if (IS_VALLEYVIEW(dev)) |
| 153 | return; |
| 154 | |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 155 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
Zhao Yakui | 01c6688 | 2009-10-28 05:10:00 +0000 | [diff] [blame] | 156 | |
Eric Anholt | c619eed | 2010-01-28 16:45:52 -0800 | [diff] [blame] | 157 | if (HAS_PCH_SPLIT(dev)) |
Adam Jackson | f2b115e | 2009-12-03 17:14:42 -0500 | [diff] [blame] | 158 | ironlake_enable_display_irq(dev_priv, DE_GSE); |
Zhao Yakui | edcb49c | 2010-04-07 17:11:21 +0800 | [diff] [blame] | 159 | else { |
Zhao Yakui | 01c6688 | 2009-10-28 05:10:00 +0000 | [diff] [blame] | 160 | i915_enable_pipestat(dev_priv, 1, |
Jesse Barnes | d874bcf | 2010-06-30 13:16:00 -0700 | [diff] [blame] | 161 | PIPE_LEGACY_BLC_EVENT_ENABLE); |
Chris Wilson | a6c45cf | 2010-09-17 00:32:17 +0100 | [diff] [blame] | 162 | if (INTEL_INFO(dev)->gen >= 4) |
Zhao Yakui | edcb49c | 2010-04-07 17:11:21 +0800 | [diff] [blame] | 163 | i915_enable_pipestat(dev_priv, 0, |
Jesse Barnes | d874bcf | 2010-06-30 13:16:00 -0700 | [diff] [blame] | 164 | PIPE_LEGACY_BLC_EVENT_ENABLE); |
Zhao Yakui | edcb49c | 2010-04-07 17:11:21 +0800 | [diff] [blame] | 165 | } |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 166 | |
| 167 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
Zhao Yakui | 01c6688 | 2009-10-28 05:10:00 +0000 | [diff] [blame] | 168 | } |
| 169 | |
| 170 | /** |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 171 | * i915_pipe_enabled - check if a pipe is enabled |
| 172 | * @dev: DRM device |
| 173 | * @pipe: pipe to check |
| 174 | * |
| 175 | * Reading certain registers when the pipe is disabled can hang the chip. |
| 176 | * Use this routine to make sure the PLL is running and the pipe is active |
| 177 | * before reading such registers if unsure. |
| 178 | */ |
| 179 | static int |
| 180 | i915_pipe_enabled(struct drm_device *dev, int pipe) |
| 181 | { |
| 182 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Paulo Zanoni | 702e7a5 | 2012-10-23 18:29:59 -0200 | [diff] [blame] | 183 | enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv, |
| 184 | pipe); |
| 185 | |
| 186 | return I915_READ(PIPECONF(cpu_transcoder)) & PIPECONF_ENABLE; |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 187 | } |
| 188 | |
Keith Packard | 42f52ef | 2008-10-18 19:39:29 -0700 | [diff] [blame] | 189 | /* Called from drm generic code, passed a 'crtc', which |
| 190 | * we use as a pipe index |
| 191 | */ |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 192 | static u32 i915_get_vblank_counter(struct drm_device *dev, int pipe) |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 193 | { |
| 194 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 195 | unsigned long high_frame; |
| 196 | unsigned long low_frame; |
Chris Wilson | 5eddb70 | 2010-09-11 13:48:45 +0100 | [diff] [blame] | 197 | u32 high1, high2, low; |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 198 | |
| 199 | if (!i915_pipe_enabled(dev, pipe)) { |
Zhao Yakui | 44d98a6 | 2009-10-09 11:39:40 +0800 | [diff] [blame] | 200 | DRM_DEBUG_DRIVER("trying to get vblank count for disabled " |
Jesse Barnes | 9db4a9c | 2011-02-07 12:26:52 -0800 | [diff] [blame] | 201 | "pipe %c\n", pipe_name(pipe)); |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 202 | return 0; |
| 203 | } |
| 204 | |
Jesse Barnes | 9db4a9c | 2011-02-07 12:26:52 -0800 | [diff] [blame] | 205 | high_frame = PIPEFRAME(pipe); |
| 206 | low_frame = PIPEFRAMEPIXEL(pipe); |
Chris Wilson | 5eddb70 | 2010-09-11 13:48:45 +0100 | [diff] [blame] | 207 | |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 208 | /* |
| 209 | * High & low register fields aren't synchronized, so make sure |
| 210 | * we get a low value that's stable across two reads of the high |
| 211 | * register. |
| 212 | */ |
| 213 | do { |
Chris Wilson | 5eddb70 | 2010-09-11 13:48:45 +0100 | [diff] [blame] | 214 | high1 = I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK; |
| 215 | low = I915_READ(low_frame) & PIPE_FRAME_LOW_MASK; |
| 216 | high2 = I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK; |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 217 | } while (high1 != high2); |
| 218 | |
Chris Wilson | 5eddb70 | 2010-09-11 13:48:45 +0100 | [diff] [blame] | 219 | high1 >>= PIPE_FRAME_HIGH_SHIFT; |
| 220 | low >>= PIPE_FRAME_LOW_SHIFT; |
| 221 | return (high1 << 8) | low; |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 222 | } |
| 223 | |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 224 | static u32 gm45_get_vblank_counter(struct drm_device *dev, int pipe) |
Jesse Barnes | 9880b7a | 2009-02-06 10:22:41 -0800 | [diff] [blame] | 225 | { |
| 226 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Jesse Barnes | 9db4a9c | 2011-02-07 12:26:52 -0800 | [diff] [blame] | 227 | int reg = PIPE_FRMCOUNT_GM45(pipe); |
Jesse Barnes | 9880b7a | 2009-02-06 10:22:41 -0800 | [diff] [blame] | 228 | |
| 229 | if (!i915_pipe_enabled(dev, pipe)) { |
Zhao Yakui | 44d98a6 | 2009-10-09 11:39:40 +0800 | [diff] [blame] | 230 | DRM_DEBUG_DRIVER("trying to get vblank count for disabled " |
Jesse Barnes | 9db4a9c | 2011-02-07 12:26:52 -0800 | [diff] [blame] | 231 | "pipe %c\n", pipe_name(pipe)); |
Jesse Barnes | 9880b7a | 2009-02-06 10:22:41 -0800 | [diff] [blame] | 232 | return 0; |
| 233 | } |
| 234 | |
| 235 | return I915_READ(reg); |
| 236 | } |
| 237 | |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 238 | static int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe, |
Mario Kleiner | 0af7e4d | 2010-12-08 04:07:19 +0100 | [diff] [blame] | 239 | int *vpos, int *hpos) |
| 240 | { |
| 241 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 242 | u32 vbl = 0, position = 0; |
| 243 | int vbl_start, vbl_end, htotal, vtotal; |
| 244 | bool in_vbl = true; |
| 245 | int ret = 0; |
Paulo Zanoni | fe2b8f9 | 2012-10-23 18:30:02 -0200 | [diff] [blame] | 246 | enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv, |
| 247 | pipe); |
Mario Kleiner | 0af7e4d | 2010-12-08 04:07:19 +0100 | [diff] [blame] | 248 | |
| 249 | if (!i915_pipe_enabled(dev, pipe)) { |
| 250 | DRM_DEBUG_DRIVER("trying to get scanoutpos for disabled " |
Jesse Barnes | 9db4a9c | 2011-02-07 12:26:52 -0800 | [diff] [blame] | 251 | "pipe %c\n", pipe_name(pipe)); |
Mario Kleiner | 0af7e4d | 2010-12-08 04:07:19 +0100 | [diff] [blame] | 252 | return 0; |
| 253 | } |
| 254 | |
| 255 | /* Get vtotal. */ |
Paulo Zanoni | fe2b8f9 | 2012-10-23 18:30:02 -0200 | [diff] [blame] | 256 | vtotal = 1 + ((I915_READ(VTOTAL(cpu_transcoder)) >> 16) & 0x1fff); |
Mario Kleiner | 0af7e4d | 2010-12-08 04:07:19 +0100 | [diff] [blame] | 257 | |
| 258 | if (INTEL_INFO(dev)->gen >= 4) { |
| 259 | /* No obvious pixelcount register. Only query vertical |
| 260 | * scanout position from Display scan line register. |
| 261 | */ |
| 262 | position = I915_READ(PIPEDSL(pipe)); |
| 263 | |
| 264 | /* Decode into vertical scanout position. Don't have |
| 265 | * horizontal scanout position. |
| 266 | */ |
| 267 | *vpos = position & 0x1fff; |
| 268 | *hpos = 0; |
| 269 | } else { |
| 270 | /* Have access to pixelcount since start of frame. |
| 271 | * We can split this into vertical and horizontal |
| 272 | * scanout position. |
| 273 | */ |
| 274 | position = (I915_READ(PIPEFRAMEPIXEL(pipe)) & PIPE_PIXEL_MASK) >> PIPE_PIXEL_SHIFT; |
| 275 | |
Paulo Zanoni | fe2b8f9 | 2012-10-23 18:30:02 -0200 | [diff] [blame] | 276 | htotal = 1 + ((I915_READ(HTOTAL(cpu_transcoder)) >> 16) & 0x1fff); |
Mario Kleiner | 0af7e4d | 2010-12-08 04:07:19 +0100 | [diff] [blame] | 277 | *vpos = position / htotal; |
| 278 | *hpos = position - (*vpos * htotal); |
| 279 | } |
| 280 | |
| 281 | /* Query vblank area. */ |
Paulo Zanoni | fe2b8f9 | 2012-10-23 18:30:02 -0200 | [diff] [blame] | 282 | vbl = I915_READ(VBLANK(cpu_transcoder)); |
Mario Kleiner | 0af7e4d | 2010-12-08 04:07:19 +0100 | [diff] [blame] | 283 | |
| 284 | /* Test position against vblank region. */ |
| 285 | vbl_start = vbl & 0x1fff; |
| 286 | vbl_end = (vbl >> 16) & 0x1fff; |
| 287 | |
| 288 | if ((*vpos < vbl_start) || (*vpos > vbl_end)) |
| 289 | in_vbl = false; |
| 290 | |
| 291 | /* Inside "upper part" of vblank area? Apply corrective offset: */ |
| 292 | if (in_vbl && (*vpos >= vbl_start)) |
| 293 | *vpos = *vpos - vtotal; |
| 294 | |
| 295 | /* Readouts valid? */ |
| 296 | if (vbl > 0) |
| 297 | ret |= DRM_SCANOUTPOS_VALID | DRM_SCANOUTPOS_ACCURATE; |
| 298 | |
| 299 | /* In vblank? */ |
| 300 | if (in_vbl) |
| 301 | ret |= DRM_SCANOUTPOS_INVBL; |
| 302 | |
| 303 | return ret; |
| 304 | } |
| 305 | |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 306 | static int i915_get_vblank_timestamp(struct drm_device *dev, int pipe, |
Mario Kleiner | 0af7e4d | 2010-12-08 04:07:19 +0100 | [diff] [blame] | 307 | int *max_error, |
| 308 | struct timeval *vblank_time, |
| 309 | unsigned flags) |
| 310 | { |
Chris Wilson | 4041b85 | 2011-01-22 10:07:56 +0000 | [diff] [blame] | 311 | struct drm_crtc *crtc; |
Mario Kleiner | 0af7e4d | 2010-12-08 04:07:19 +0100 | [diff] [blame] | 312 | |
Ben Widawsky | 7eb552a | 2013-03-13 14:05:41 -0700 | [diff] [blame] | 313 | if (pipe < 0 || pipe >= INTEL_INFO(dev)->num_pipes) { |
Chris Wilson | 4041b85 | 2011-01-22 10:07:56 +0000 | [diff] [blame] | 314 | DRM_ERROR("Invalid crtc %d\n", pipe); |
Mario Kleiner | 0af7e4d | 2010-12-08 04:07:19 +0100 | [diff] [blame] | 315 | return -EINVAL; |
| 316 | } |
| 317 | |
| 318 | /* Get drm_crtc to timestamp: */ |
Chris Wilson | 4041b85 | 2011-01-22 10:07:56 +0000 | [diff] [blame] | 319 | crtc = intel_get_crtc_for_pipe(dev, pipe); |
| 320 | if (crtc == NULL) { |
| 321 | DRM_ERROR("Invalid crtc %d\n", pipe); |
| 322 | return -EINVAL; |
| 323 | } |
| 324 | |
| 325 | if (!crtc->enabled) { |
| 326 | DRM_DEBUG_KMS("crtc %d is disabled\n", pipe); |
| 327 | return -EBUSY; |
| 328 | } |
Mario Kleiner | 0af7e4d | 2010-12-08 04:07:19 +0100 | [diff] [blame] | 329 | |
| 330 | /* Helper routine in DRM core does all the work: */ |
Chris Wilson | 4041b85 | 2011-01-22 10:07:56 +0000 | [diff] [blame] | 331 | return drm_calc_vbltimestamp_from_scanoutpos(dev, pipe, max_error, |
| 332 | vblank_time, flags, |
| 333 | crtc); |
Mario Kleiner | 0af7e4d | 2010-12-08 04:07:19 +0100 | [diff] [blame] | 334 | } |
| 335 | |
Jesse Barnes | 5ca5828 | 2009-03-31 14:11:15 -0700 | [diff] [blame] | 336 | /* |
| 337 | * Handle hotplug events outside the interrupt handler proper. |
| 338 | */ |
| 339 | static void i915_hotplug_work_func(struct work_struct *work) |
| 340 | { |
| 341 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, |
| 342 | hotplug_work); |
| 343 | struct drm_device *dev = dev_priv->dev; |
Keith Packard | c31c4ba | 2009-05-06 11:48:58 -0700 | [diff] [blame] | 344 | struct drm_mode_config *mode_config = &dev->mode_config; |
Chris Wilson | 4ef69c7 | 2010-09-09 15:14:28 +0100 | [diff] [blame] | 345 | struct intel_encoder *encoder; |
Jesse Barnes | 5ca5828 | 2009-03-31 14:11:15 -0700 | [diff] [blame] | 346 | |
Daniel Vetter | 52d7ece | 2012-12-01 21:03:22 +0100 | [diff] [blame] | 347 | /* HPD irq before everything is fully set up. */ |
| 348 | if (!dev_priv->enable_hotplug_processing) |
| 349 | return; |
| 350 | |
Keith Packard | a65e34c | 2011-07-25 10:04:56 -0700 | [diff] [blame] | 351 | mutex_lock(&mode_config->mutex); |
Jesse Barnes | e67189ab | 2011-02-11 14:44:51 -0800 | [diff] [blame] | 352 | DRM_DEBUG_KMS("running encoder hotplug functions\n"); |
| 353 | |
Chris Wilson | 4ef69c7 | 2010-09-09 15:14:28 +0100 | [diff] [blame] | 354 | list_for_each_entry(encoder, &mode_config->encoder_list, base.head) |
| 355 | if (encoder->hot_plug) |
| 356 | encoder->hot_plug(encoder); |
| 357 | |
Keith Packard | 40ee338 | 2011-07-28 15:31:19 -0700 | [diff] [blame] | 358 | mutex_unlock(&mode_config->mutex); |
| 359 | |
Jesse Barnes | 5ca5828 | 2009-03-31 14:11:15 -0700 | [diff] [blame] | 360 | /* Just fire off a uevent and let userspace tell us what to do */ |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 361 | drm_helper_hpd_irq_event(dev); |
Jesse Barnes | 5ca5828 | 2009-03-31 14:11:15 -0700 | [diff] [blame] | 362 | } |
| 363 | |
Daniel Vetter | 73edd18f | 2012-08-08 23:35:37 +0200 | [diff] [blame] | 364 | static void ironlake_handle_rps_change(struct drm_device *dev) |
Jesse Barnes | f97108d | 2010-01-29 11:27:07 -0800 | [diff] [blame] | 365 | { |
| 366 | drm_i915_private_t *dev_priv = dev->dev_private; |
Matthew Garrett | b5b72e8 | 2010-02-02 18:30:47 +0000 | [diff] [blame] | 367 | u32 busy_up, busy_down, max_avg, min_avg; |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 368 | u8 new_delay; |
| 369 | unsigned long flags; |
| 370 | |
| 371 | spin_lock_irqsave(&mchdev_lock, flags); |
Jesse Barnes | f97108d | 2010-01-29 11:27:07 -0800 | [diff] [blame] | 372 | |
Daniel Vetter | 73edd18f | 2012-08-08 23:35:37 +0200 | [diff] [blame] | 373 | I915_WRITE16(MEMINTRSTS, I915_READ(MEMINTRSTS)); |
| 374 | |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 375 | new_delay = dev_priv->ips.cur_delay; |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 376 | |
Jesse Barnes | 7648fa9 | 2010-05-20 14:28:11 -0700 | [diff] [blame] | 377 | I915_WRITE16(MEMINTRSTS, MEMINT_EVAL_CHG); |
Matthew Garrett | b5b72e8 | 2010-02-02 18:30:47 +0000 | [diff] [blame] | 378 | busy_up = I915_READ(RCPREVBSYTUPAVG); |
| 379 | busy_down = I915_READ(RCPREVBSYTDNAVG); |
Jesse Barnes | f97108d | 2010-01-29 11:27:07 -0800 | [diff] [blame] | 380 | max_avg = I915_READ(RCBMAXAVG); |
| 381 | min_avg = I915_READ(RCBMINAVG); |
| 382 | |
| 383 | /* Handle RCS change request from hw */ |
Matthew Garrett | b5b72e8 | 2010-02-02 18:30:47 +0000 | [diff] [blame] | 384 | if (busy_up > max_avg) { |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 385 | if (dev_priv->ips.cur_delay != dev_priv->ips.max_delay) |
| 386 | new_delay = dev_priv->ips.cur_delay - 1; |
| 387 | if (new_delay < dev_priv->ips.max_delay) |
| 388 | new_delay = dev_priv->ips.max_delay; |
Matthew Garrett | b5b72e8 | 2010-02-02 18:30:47 +0000 | [diff] [blame] | 389 | } else if (busy_down < min_avg) { |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 390 | if (dev_priv->ips.cur_delay != dev_priv->ips.min_delay) |
| 391 | new_delay = dev_priv->ips.cur_delay + 1; |
| 392 | if (new_delay > dev_priv->ips.min_delay) |
| 393 | new_delay = dev_priv->ips.min_delay; |
Jesse Barnes | f97108d | 2010-01-29 11:27:07 -0800 | [diff] [blame] | 394 | } |
| 395 | |
Jesse Barnes | 7648fa9 | 2010-05-20 14:28:11 -0700 | [diff] [blame] | 396 | if (ironlake_set_drps(dev, new_delay)) |
Daniel Vetter | 20e4d40 | 2012-08-08 23:35:39 +0200 | [diff] [blame] | 397 | dev_priv->ips.cur_delay = new_delay; |
Jesse Barnes | f97108d | 2010-01-29 11:27:07 -0800 | [diff] [blame] | 398 | |
Daniel Vetter | 9270388 | 2012-08-09 16:46:01 +0200 | [diff] [blame] | 399 | spin_unlock_irqrestore(&mchdev_lock, flags); |
| 400 | |
Jesse Barnes | f97108d | 2010-01-29 11:27:07 -0800 | [diff] [blame] | 401 | return; |
| 402 | } |
| 403 | |
Chris Wilson | 549f736 | 2010-10-19 11:19:32 +0100 | [diff] [blame] | 404 | static void notify_ring(struct drm_device *dev, |
| 405 | struct intel_ring_buffer *ring) |
| 406 | { |
| 407 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 9862e60 | 2011-01-04 22:22:17 +0000 | [diff] [blame] | 408 | |
Chris Wilson | 475553d | 2011-01-20 09:52:56 +0000 | [diff] [blame] | 409 | if (ring->obj == NULL) |
| 410 | return; |
| 411 | |
Chris Wilson | b2eadbc | 2012-08-09 10:58:30 +0100 | [diff] [blame] | 412 | trace_i915_gem_request_complete(ring, ring->get_seqno(ring, false)); |
Chris Wilson | 9862e60 | 2011-01-04 22:22:17 +0000 | [diff] [blame] | 413 | |
Chris Wilson | 549f736 | 2010-10-19 11:19:32 +0100 | [diff] [blame] | 414 | wake_up_all(&ring->irq_queue); |
Ben Widawsky | 3e0dc6b | 2011-06-29 10:26:42 -0700 | [diff] [blame] | 415 | if (i915_enable_hangcheck) { |
Daniel Vetter | 99584db | 2012-11-14 17:14:04 +0100 | [diff] [blame] | 416 | dev_priv->gpu_error.hangcheck_count = 0; |
| 417 | mod_timer(&dev_priv->gpu_error.hangcheck_timer, |
Chris Wilson | cecc21f | 2012-10-05 17:02:56 +0100 | [diff] [blame] | 418 | round_jiffies_up(jiffies + DRM_I915_HANGCHECK_JIFFIES)); |
Ben Widawsky | 3e0dc6b | 2011-06-29 10:26:42 -0700 | [diff] [blame] | 419 | } |
Chris Wilson | 549f736 | 2010-10-19 11:19:32 +0100 | [diff] [blame] | 420 | } |
| 421 | |
Ben Widawsky | 4912d04 | 2011-04-25 11:25:20 -0700 | [diff] [blame] | 422 | static void gen6_pm_rps_work(struct work_struct *work) |
Jesse Barnes | 3b8d8d9 | 2010-12-17 14:19:02 -0800 | [diff] [blame] | 423 | { |
Ben Widawsky | 4912d04 | 2011-04-25 11:25:20 -0700 | [diff] [blame] | 424 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 425 | rps.work); |
Ben Widawsky | 4912d04 | 2011-04-25 11:25:20 -0700 | [diff] [blame] | 426 | u32 pm_iir, pm_imr; |
Chris Wilson | 7b9e0ae | 2012-04-28 08:56:39 +0100 | [diff] [blame] | 427 | u8 new_delay; |
Jesse Barnes | 3b8d8d9 | 2010-12-17 14:19:02 -0800 | [diff] [blame] | 428 | |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 429 | spin_lock_irq(&dev_priv->rps.lock); |
| 430 | pm_iir = dev_priv->rps.pm_iir; |
| 431 | dev_priv->rps.pm_iir = 0; |
Ben Widawsky | 4912d04 | 2011-04-25 11:25:20 -0700 | [diff] [blame] | 432 | pm_imr = I915_READ(GEN6_PMIMR); |
Daniel Vetter | a9e2641 | 2011-09-08 14:00:21 +0200 | [diff] [blame] | 433 | I915_WRITE(GEN6_PMIMR, 0); |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 434 | spin_unlock_irq(&dev_priv->rps.lock); |
Ben Widawsky | 4912d04 | 2011-04-25 11:25:20 -0700 | [diff] [blame] | 435 | |
Chris Wilson | 7b9e0ae | 2012-04-28 08:56:39 +0100 | [diff] [blame] | 436 | if ((pm_iir & GEN6_PM_DEFERRED_EVENTS) == 0) |
Jesse Barnes | 3b8d8d9 | 2010-12-17 14:19:02 -0800 | [diff] [blame] | 437 | return; |
| 438 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 439 | mutex_lock(&dev_priv->rps.hw_lock); |
Chris Wilson | 7b9e0ae | 2012-04-28 08:56:39 +0100 | [diff] [blame] | 440 | |
| 441 | if (pm_iir & GEN6_PM_RP_UP_THRESHOLD) |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 442 | new_delay = dev_priv->rps.cur_delay + 1; |
Chris Wilson | 7b9e0ae | 2012-04-28 08:56:39 +0100 | [diff] [blame] | 443 | else |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 444 | new_delay = dev_priv->rps.cur_delay - 1; |
Jesse Barnes | 3b8d8d9 | 2010-12-17 14:19:02 -0800 | [diff] [blame] | 445 | |
Ben Widawsky | 7924963 | 2012-09-07 19:43:42 -0700 | [diff] [blame] | 446 | /* sysfs frequency interfaces may have snuck in while servicing the |
| 447 | * interrupt |
| 448 | */ |
| 449 | if (!(new_delay > dev_priv->rps.max_delay || |
| 450 | new_delay < dev_priv->rps.min_delay)) { |
| 451 | gen6_set_rps(dev_priv->dev, new_delay); |
| 452 | } |
Jesse Barnes | 3b8d8d9 | 2010-12-17 14:19:02 -0800 | [diff] [blame] | 453 | |
Jesse Barnes | 4fc688c | 2012-11-02 11:14:01 -0700 | [diff] [blame] | 454 | mutex_unlock(&dev_priv->rps.hw_lock); |
Jesse Barnes | 3b8d8d9 | 2010-12-17 14:19:02 -0800 | [diff] [blame] | 455 | } |
| 456 | |
Ben Widawsky | e368919 | 2012-05-25 16:56:22 -0700 | [diff] [blame] | 457 | |
| 458 | /** |
| 459 | * ivybridge_parity_work - Workqueue called when a parity error interrupt |
| 460 | * occurred. |
| 461 | * @work: workqueue struct |
| 462 | * |
| 463 | * Doesn't actually do anything except notify userspace. As a consequence of |
| 464 | * this event, userspace should try to remap the bad rows since statistically |
| 465 | * it is likely the same row is more likely to go bad again. |
| 466 | */ |
| 467 | static void ivybridge_parity_work(struct work_struct *work) |
| 468 | { |
| 469 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, |
Daniel Vetter | a4da4fa | 2012-11-02 19:55:07 +0100 | [diff] [blame] | 470 | l3_parity.error_work); |
Ben Widawsky | e368919 | 2012-05-25 16:56:22 -0700 | [diff] [blame] | 471 | u32 error_status, row, bank, subbank; |
| 472 | char *parity_event[5]; |
| 473 | uint32_t misccpctl; |
| 474 | unsigned long flags; |
| 475 | |
| 476 | /* We must turn off DOP level clock gating to access the L3 registers. |
| 477 | * In order to prevent a get/put style interface, acquire struct mutex |
| 478 | * any time we access those registers. |
| 479 | */ |
| 480 | mutex_lock(&dev_priv->dev->struct_mutex); |
| 481 | |
| 482 | misccpctl = I915_READ(GEN7_MISCCPCTL); |
| 483 | I915_WRITE(GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE); |
| 484 | POSTING_READ(GEN7_MISCCPCTL); |
| 485 | |
| 486 | error_status = I915_READ(GEN7_L3CDERRST1); |
| 487 | row = GEN7_PARITY_ERROR_ROW(error_status); |
| 488 | bank = GEN7_PARITY_ERROR_BANK(error_status); |
| 489 | subbank = GEN7_PARITY_ERROR_SUBBANK(error_status); |
| 490 | |
| 491 | I915_WRITE(GEN7_L3CDERRST1, GEN7_PARITY_ERROR_VALID | |
| 492 | GEN7_L3CDERRST1_ENABLE); |
| 493 | POSTING_READ(GEN7_L3CDERRST1); |
| 494 | |
| 495 | I915_WRITE(GEN7_MISCCPCTL, misccpctl); |
| 496 | |
| 497 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
| 498 | dev_priv->gt_irq_mask &= ~GT_GEN7_L3_PARITY_ERROR_INTERRUPT; |
| 499 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); |
| 500 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
| 501 | |
| 502 | mutex_unlock(&dev_priv->dev->struct_mutex); |
| 503 | |
| 504 | parity_event[0] = "L3_PARITY_ERROR=1"; |
| 505 | parity_event[1] = kasprintf(GFP_KERNEL, "ROW=%d", row); |
| 506 | parity_event[2] = kasprintf(GFP_KERNEL, "BANK=%d", bank); |
| 507 | parity_event[3] = kasprintf(GFP_KERNEL, "SUBBANK=%d", subbank); |
| 508 | parity_event[4] = NULL; |
| 509 | |
| 510 | kobject_uevent_env(&dev_priv->dev->primary->kdev.kobj, |
| 511 | KOBJ_CHANGE, parity_event); |
| 512 | |
| 513 | DRM_DEBUG("Parity error: Row = %d, Bank = %d, Sub bank = %d.\n", |
| 514 | row, bank, subbank); |
| 515 | |
| 516 | kfree(parity_event[3]); |
| 517 | kfree(parity_event[2]); |
| 518 | kfree(parity_event[1]); |
| 519 | } |
| 520 | |
Daniel Vetter | d2ba847 | 2012-05-31 14:57:41 +0200 | [diff] [blame] | 521 | static void ivybridge_handle_parity_error(struct drm_device *dev) |
Ben Widawsky | e368919 | 2012-05-25 16:56:22 -0700 | [diff] [blame] | 522 | { |
| 523 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 524 | unsigned long flags; |
| 525 | |
Ben Widawsky | e1ef7cc | 2012-07-24 20:47:31 -0700 | [diff] [blame] | 526 | if (!HAS_L3_GPU_CACHE(dev)) |
Ben Widawsky | e368919 | 2012-05-25 16:56:22 -0700 | [diff] [blame] | 527 | return; |
| 528 | |
| 529 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
| 530 | dev_priv->gt_irq_mask |= GT_GEN7_L3_PARITY_ERROR_INTERRUPT; |
| 531 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); |
| 532 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
| 533 | |
Daniel Vetter | a4da4fa | 2012-11-02 19:55:07 +0100 | [diff] [blame] | 534 | queue_work(dev_priv->wq, &dev_priv->l3_parity.error_work); |
Ben Widawsky | e368919 | 2012-05-25 16:56:22 -0700 | [diff] [blame] | 535 | } |
| 536 | |
Daniel Vetter | e7b4c6b | 2012-03-30 20:24:35 +0200 | [diff] [blame] | 537 | static void snb_gt_irq_handler(struct drm_device *dev, |
| 538 | struct drm_i915_private *dev_priv, |
| 539 | u32 gt_iir) |
| 540 | { |
| 541 | |
| 542 | if (gt_iir & (GEN6_RENDER_USER_INTERRUPT | |
| 543 | GEN6_RENDER_PIPE_CONTROL_NOTIFY_INTERRUPT)) |
| 544 | notify_ring(dev, &dev_priv->ring[RCS]); |
| 545 | if (gt_iir & GEN6_BSD_USER_INTERRUPT) |
| 546 | notify_ring(dev, &dev_priv->ring[VCS]); |
| 547 | if (gt_iir & GEN6_BLITTER_USER_INTERRUPT) |
| 548 | notify_ring(dev, &dev_priv->ring[BCS]); |
| 549 | |
| 550 | if (gt_iir & (GT_GEN6_BLT_CS_ERROR_INTERRUPT | |
| 551 | GT_GEN6_BSD_CS_ERROR_INTERRUPT | |
| 552 | GT_RENDER_CS_ERROR_INTERRUPT)) { |
| 553 | DRM_ERROR("GT error interrupt 0x%08x\n", gt_iir); |
| 554 | i915_handle_error(dev, false); |
| 555 | } |
Ben Widawsky | e368919 | 2012-05-25 16:56:22 -0700 | [diff] [blame] | 556 | |
| 557 | if (gt_iir & GT_GEN7_L3_PARITY_ERROR_INTERRUPT) |
| 558 | ivybridge_handle_parity_error(dev); |
Daniel Vetter | e7b4c6b | 2012-03-30 20:24:35 +0200 | [diff] [blame] | 559 | } |
| 560 | |
Chris Wilson | fc6826d | 2012-04-15 11:56:03 +0100 | [diff] [blame] | 561 | static void gen6_queue_rps_work(struct drm_i915_private *dev_priv, |
| 562 | u32 pm_iir) |
| 563 | { |
| 564 | unsigned long flags; |
| 565 | |
| 566 | /* |
| 567 | * IIR bits should never already be set because IMR should |
| 568 | * prevent an interrupt from being shown in IIR. The warning |
| 569 | * displays a case where we've unsafely cleared |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 570 | * dev_priv->rps.pm_iir. Although missing an interrupt of the same |
Chris Wilson | fc6826d | 2012-04-15 11:56:03 +0100 | [diff] [blame] | 571 | * type is not a problem, it displays a problem in the logic. |
| 572 | * |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 573 | * The mask bit in IMR is cleared by dev_priv->rps.work. |
Chris Wilson | fc6826d | 2012-04-15 11:56:03 +0100 | [diff] [blame] | 574 | */ |
| 575 | |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 576 | spin_lock_irqsave(&dev_priv->rps.lock, flags); |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 577 | dev_priv->rps.pm_iir |= pm_iir; |
| 578 | I915_WRITE(GEN6_PMIMR, dev_priv->rps.pm_iir); |
Chris Wilson | fc6826d | 2012-04-15 11:56:03 +0100 | [diff] [blame] | 579 | POSTING_READ(GEN6_PMIMR); |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 580 | spin_unlock_irqrestore(&dev_priv->rps.lock, flags); |
Chris Wilson | fc6826d | 2012-04-15 11:56:03 +0100 | [diff] [blame] | 581 | |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 582 | queue_work(dev_priv->wq, &dev_priv->rps.work); |
Chris Wilson | fc6826d | 2012-04-15 11:56:03 +0100 | [diff] [blame] | 583 | } |
| 584 | |
Egbert Eich | b543fb0 | 2013-04-16 13:36:54 +0200 | [diff] [blame^] | 585 | #define HPD_STORM_DETECT_PERIOD 1000 |
| 586 | #define HPD_STORM_THRESHOLD 5 |
| 587 | |
| 588 | static inline void hotplug_irq_storm_detect(struct drm_device *dev, |
| 589 | u32 hotplug_trigger, |
| 590 | const u32 *hpd) |
| 591 | { |
| 592 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 593 | unsigned long irqflags; |
| 594 | int i; |
| 595 | |
| 596 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
| 597 | |
| 598 | for (i = 1; i < HPD_NUM_PINS; i++) { |
| 599 | if (!(hpd[i] & hotplug_trigger) || |
| 600 | dev_priv->hpd_stats[i].hpd_mark != HPD_ENABLED) |
| 601 | continue; |
| 602 | |
| 603 | if (!time_in_range(jiffies, dev_priv->hpd_stats[i].hpd_last_jiffies, |
| 604 | dev_priv->hpd_stats[i].hpd_last_jiffies |
| 605 | + msecs_to_jiffies(HPD_STORM_DETECT_PERIOD))) { |
| 606 | dev_priv->hpd_stats[i].hpd_last_jiffies = jiffies; |
| 607 | dev_priv->hpd_stats[i].hpd_cnt = 0; |
| 608 | } else if (dev_priv->hpd_stats[i].hpd_cnt > HPD_STORM_THRESHOLD) { |
| 609 | dev_priv->hpd_stats[i].hpd_mark = HPD_MARK_DISABLED; |
| 610 | DRM_DEBUG_KMS("HPD interrupt storm detected on PIN %d\n", i); |
| 611 | } else { |
| 612 | dev_priv->hpd_stats[i].hpd_cnt++; |
| 613 | } |
| 614 | } |
| 615 | |
| 616 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
| 617 | } |
| 618 | |
Daniel Vetter | 515ac2b | 2012-12-01 13:53:44 +0100 | [diff] [blame] | 619 | static void gmbus_irq_handler(struct drm_device *dev) |
| 620 | { |
Daniel Vetter | 28c70f1 | 2012-12-01 13:53:45 +0100 | [diff] [blame] | 621 | struct drm_i915_private *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 622 | |
Daniel Vetter | 28c70f1 | 2012-12-01 13:53:45 +0100 | [diff] [blame] | 623 | wake_up_all(&dev_priv->gmbus_wait_queue); |
Daniel Vetter | 515ac2b | 2012-12-01 13:53:44 +0100 | [diff] [blame] | 624 | } |
| 625 | |
Daniel Vetter | ce99c25 | 2012-12-01 13:53:47 +0100 | [diff] [blame] | 626 | static void dp_aux_irq_handler(struct drm_device *dev) |
| 627 | { |
Daniel Vetter | 9ee32fea | 2012-12-01 13:53:48 +0100 | [diff] [blame] | 628 | struct drm_i915_private *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 629 | |
Daniel Vetter | 9ee32fea | 2012-12-01 13:53:48 +0100 | [diff] [blame] | 630 | wake_up_all(&dev_priv->gmbus_wait_queue); |
Daniel Vetter | ce99c25 | 2012-12-01 13:53:47 +0100 | [diff] [blame] | 631 | } |
| 632 | |
Daniel Vetter | ff1f525 | 2012-10-02 15:10:55 +0200 | [diff] [blame] | 633 | static irqreturn_t valleyview_irq_handler(int irq, void *arg) |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 634 | { |
| 635 | struct drm_device *dev = (struct drm_device *) arg; |
| 636 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 637 | u32 iir, gt_iir, pm_iir; |
| 638 | irqreturn_t ret = IRQ_NONE; |
| 639 | unsigned long irqflags; |
| 640 | int pipe; |
| 641 | u32 pipe_stats[I915_MAX_PIPES]; |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 642 | |
| 643 | atomic_inc(&dev_priv->irq_received); |
| 644 | |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 645 | while (true) { |
| 646 | iir = I915_READ(VLV_IIR); |
| 647 | gt_iir = I915_READ(GTIIR); |
| 648 | pm_iir = I915_READ(GEN6_PMIIR); |
| 649 | |
| 650 | if (gt_iir == 0 && pm_iir == 0 && iir == 0) |
| 651 | goto out; |
| 652 | |
| 653 | ret = IRQ_HANDLED; |
| 654 | |
Daniel Vetter | e7b4c6b | 2012-03-30 20:24:35 +0200 | [diff] [blame] | 655 | snb_gt_irq_handler(dev, dev_priv, gt_iir); |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 656 | |
| 657 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
| 658 | for_each_pipe(pipe) { |
| 659 | int reg = PIPESTAT(pipe); |
| 660 | pipe_stats[pipe] = I915_READ(reg); |
| 661 | |
| 662 | /* |
| 663 | * Clear the PIPE*STAT regs before the IIR |
| 664 | */ |
| 665 | if (pipe_stats[pipe] & 0x8000ffff) { |
| 666 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) |
| 667 | DRM_DEBUG_DRIVER("pipe %c underrun\n", |
| 668 | pipe_name(pipe)); |
| 669 | I915_WRITE(reg, pipe_stats[pipe]); |
| 670 | } |
| 671 | } |
| 672 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
| 673 | |
Jesse Barnes | 31acc7f | 2012-06-20 10:53:11 -0700 | [diff] [blame] | 674 | for_each_pipe(pipe) { |
| 675 | if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS) |
| 676 | drm_handle_vblank(dev, pipe); |
| 677 | |
| 678 | if (pipe_stats[pipe] & PLANE_FLIPDONE_INT_STATUS_VLV) { |
| 679 | intel_prepare_page_flip(dev, pipe); |
| 680 | intel_finish_page_flip(dev, pipe); |
| 681 | } |
| 682 | } |
| 683 | |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 684 | /* Consume port. Then clear IIR or we'll miss events */ |
| 685 | if (iir & I915_DISPLAY_PORT_INTERRUPT) { |
| 686 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); |
Egbert Eich | b543fb0 | 2013-04-16 13:36:54 +0200 | [diff] [blame^] | 687 | u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_I915; |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 688 | |
| 689 | DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", |
| 690 | hotplug_status); |
Egbert Eich | b543fb0 | 2013-04-16 13:36:54 +0200 | [diff] [blame^] | 691 | if (hotplug_trigger) { |
| 692 | hotplug_irq_storm_detect(dev, hotplug_trigger, hpd_status_i915); |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 693 | queue_work(dev_priv->wq, |
| 694 | &dev_priv->hotplug_work); |
Egbert Eich | b543fb0 | 2013-04-16 13:36:54 +0200 | [diff] [blame^] | 695 | } |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 696 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); |
| 697 | I915_READ(PORT_HOTPLUG_STAT); |
| 698 | } |
| 699 | |
Daniel Vetter | 515ac2b | 2012-12-01 13:53:44 +0100 | [diff] [blame] | 700 | if (pipe_stats[0] & PIPE_GMBUS_INTERRUPT_STATUS) |
| 701 | gmbus_irq_handler(dev); |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 702 | |
Chris Wilson | fc6826d | 2012-04-15 11:56:03 +0100 | [diff] [blame] | 703 | if (pm_iir & GEN6_PM_DEFERRED_EVENTS) |
| 704 | gen6_queue_rps_work(dev_priv, pm_iir); |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 705 | |
| 706 | I915_WRITE(GTIIR, gt_iir); |
| 707 | I915_WRITE(GEN6_PMIIR, pm_iir); |
| 708 | I915_WRITE(VLV_IIR, iir); |
| 709 | } |
| 710 | |
| 711 | out: |
| 712 | return ret; |
| 713 | } |
| 714 | |
Adam Jackson | 23e81d6 | 2012-06-06 15:45:44 -0400 | [diff] [blame] | 715 | static void ibx_irq_handler(struct drm_device *dev, u32 pch_iir) |
Jesse Barnes | 776ad80 | 2011-01-04 15:09:39 -0800 | [diff] [blame] | 716 | { |
| 717 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Jesse Barnes | 9db4a9c | 2011-02-07 12:26:52 -0800 | [diff] [blame] | 718 | int pipe; |
Egbert Eich | b543fb0 | 2013-04-16 13:36:54 +0200 | [diff] [blame^] | 719 | u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK; |
Jesse Barnes | 776ad80 | 2011-01-04 15:09:39 -0800 | [diff] [blame] | 720 | |
Egbert Eich | b543fb0 | 2013-04-16 13:36:54 +0200 | [diff] [blame^] | 721 | if (hotplug_trigger) { |
| 722 | hotplug_irq_storm_detect(dev, hotplug_trigger, hpd_ibx); |
Daniel Vetter | 76e4383 | 2012-10-12 20:14:05 +0200 | [diff] [blame] | 723 | queue_work(dev_priv->wq, &dev_priv->hotplug_work); |
Egbert Eich | b543fb0 | 2013-04-16 13:36:54 +0200 | [diff] [blame^] | 724 | } |
Jesse Barnes | 776ad80 | 2011-01-04 15:09:39 -0800 | [diff] [blame] | 725 | if (pch_iir & SDE_AUDIO_POWER_MASK) |
| 726 | DRM_DEBUG_DRIVER("PCH audio power change on port %d\n", |
| 727 | (pch_iir & SDE_AUDIO_POWER_MASK) >> |
| 728 | SDE_AUDIO_POWER_SHIFT); |
| 729 | |
Daniel Vetter | ce99c25 | 2012-12-01 13:53:47 +0100 | [diff] [blame] | 730 | if (pch_iir & SDE_AUX_MASK) |
| 731 | dp_aux_irq_handler(dev); |
| 732 | |
Jesse Barnes | 776ad80 | 2011-01-04 15:09:39 -0800 | [diff] [blame] | 733 | if (pch_iir & SDE_GMBUS) |
Daniel Vetter | 515ac2b | 2012-12-01 13:53:44 +0100 | [diff] [blame] | 734 | gmbus_irq_handler(dev); |
Jesse Barnes | 776ad80 | 2011-01-04 15:09:39 -0800 | [diff] [blame] | 735 | |
| 736 | if (pch_iir & SDE_AUDIO_HDCP_MASK) |
| 737 | DRM_DEBUG_DRIVER("PCH HDCP audio interrupt\n"); |
| 738 | |
| 739 | if (pch_iir & SDE_AUDIO_TRANS_MASK) |
| 740 | DRM_DEBUG_DRIVER("PCH transcoder audio interrupt\n"); |
| 741 | |
| 742 | if (pch_iir & SDE_POISON) |
| 743 | DRM_ERROR("PCH poison interrupt\n"); |
| 744 | |
Jesse Barnes | 9db4a9c | 2011-02-07 12:26:52 -0800 | [diff] [blame] | 745 | if (pch_iir & SDE_FDI_MASK) |
| 746 | for_each_pipe(pipe) |
| 747 | DRM_DEBUG_DRIVER(" pipe %c FDI IIR: 0x%08x\n", |
| 748 | pipe_name(pipe), |
| 749 | I915_READ(FDI_RX_IIR(pipe))); |
Jesse Barnes | 776ad80 | 2011-01-04 15:09:39 -0800 | [diff] [blame] | 750 | |
| 751 | if (pch_iir & (SDE_TRANSB_CRC_DONE | SDE_TRANSA_CRC_DONE)) |
| 752 | DRM_DEBUG_DRIVER("PCH transcoder CRC done interrupt\n"); |
| 753 | |
| 754 | if (pch_iir & (SDE_TRANSB_CRC_ERR | SDE_TRANSA_CRC_ERR)) |
| 755 | DRM_DEBUG_DRIVER("PCH transcoder CRC error interrupt\n"); |
| 756 | |
| 757 | if (pch_iir & SDE_TRANSB_FIFO_UNDER) |
| 758 | DRM_DEBUG_DRIVER("PCH transcoder B underrun interrupt\n"); |
| 759 | if (pch_iir & SDE_TRANSA_FIFO_UNDER) |
| 760 | DRM_DEBUG_DRIVER("PCH transcoder A underrun interrupt\n"); |
| 761 | } |
| 762 | |
Adam Jackson | 23e81d6 | 2012-06-06 15:45:44 -0400 | [diff] [blame] | 763 | static void cpt_irq_handler(struct drm_device *dev, u32 pch_iir) |
| 764 | { |
| 765 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 766 | int pipe; |
Egbert Eich | b543fb0 | 2013-04-16 13:36:54 +0200 | [diff] [blame^] | 767 | u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK_CPT; |
Adam Jackson | 23e81d6 | 2012-06-06 15:45:44 -0400 | [diff] [blame] | 768 | |
Egbert Eich | b543fb0 | 2013-04-16 13:36:54 +0200 | [diff] [blame^] | 769 | if (hotplug_trigger) { |
| 770 | hotplug_irq_storm_detect(dev, hotplug_trigger, hpd_cpt); |
Daniel Vetter | 76e4383 | 2012-10-12 20:14:05 +0200 | [diff] [blame] | 771 | queue_work(dev_priv->wq, &dev_priv->hotplug_work); |
Egbert Eich | b543fb0 | 2013-04-16 13:36:54 +0200 | [diff] [blame^] | 772 | } |
Adam Jackson | 23e81d6 | 2012-06-06 15:45:44 -0400 | [diff] [blame] | 773 | if (pch_iir & SDE_AUDIO_POWER_MASK_CPT) |
| 774 | DRM_DEBUG_DRIVER("PCH audio power change on port %d\n", |
| 775 | (pch_iir & SDE_AUDIO_POWER_MASK_CPT) >> |
| 776 | SDE_AUDIO_POWER_SHIFT_CPT); |
| 777 | |
| 778 | if (pch_iir & SDE_AUX_MASK_CPT) |
Daniel Vetter | ce99c25 | 2012-12-01 13:53:47 +0100 | [diff] [blame] | 779 | dp_aux_irq_handler(dev); |
Adam Jackson | 23e81d6 | 2012-06-06 15:45:44 -0400 | [diff] [blame] | 780 | |
| 781 | if (pch_iir & SDE_GMBUS_CPT) |
Daniel Vetter | 515ac2b | 2012-12-01 13:53:44 +0100 | [diff] [blame] | 782 | gmbus_irq_handler(dev); |
Adam Jackson | 23e81d6 | 2012-06-06 15:45:44 -0400 | [diff] [blame] | 783 | |
| 784 | if (pch_iir & SDE_AUDIO_CP_REQ_CPT) |
| 785 | DRM_DEBUG_DRIVER("Audio CP request interrupt\n"); |
| 786 | |
| 787 | if (pch_iir & SDE_AUDIO_CP_CHG_CPT) |
| 788 | DRM_DEBUG_DRIVER("Audio CP change interrupt\n"); |
| 789 | |
| 790 | if (pch_iir & SDE_FDI_MASK_CPT) |
| 791 | for_each_pipe(pipe) |
| 792 | DRM_DEBUG_DRIVER(" pipe %c FDI IIR: 0x%08x\n", |
| 793 | pipe_name(pipe), |
| 794 | I915_READ(FDI_RX_IIR(pipe))); |
| 795 | } |
| 796 | |
Daniel Vetter | ff1f525 | 2012-10-02 15:10:55 +0200 | [diff] [blame] | 797 | static irqreturn_t ivybridge_irq_handler(int irq, void *arg) |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 798 | { |
| 799 | struct drm_device *dev = (struct drm_device *) arg; |
| 800 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Ben Widawsky | ab5c608 | 2013-04-05 13:12:41 -0700 | [diff] [blame] | 801 | u32 de_iir, gt_iir, de_ier, pm_iir, sde_ier = 0; |
Chris Wilson | 0e43406 | 2012-05-09 21:45:44 +0100 | [diff] [blame] | 802 | irqreturn_t ret = IRQ_NONE; |
| 803 | int i; |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 804 | |
| 805 | atomic_inc(&dev_priv->irq_received); |
| 806 | |
| 807 | /* disable master interrupt before clearing iir */ |
| 808 | de_ier = I915_READ(DEIER); |
| 809 | I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL); |
Chris Wilson | 0e43406 | 2012-05-09 21:45:44 +0100 | [diff] [blame] | 810 | |
Paulo Zanoni | 44498ae | 2013-02-22 17:05:28 -0300 | [diff] [blame] | 811 | /* Disable south interrupts. We'll only write to SDEIIR once, so further |
| 812 | * interrupts will will be stored on its back queue, and then we'll be |
| 813 | * able to process them after we restore SDEIER (as soon as we restore |
| 814 | * it, we'll get an interrupt if SDEIIR still has something to process |
| 815 | * due to its back queue). */ |
Ben Widawsky | ab5c608 | 2013-04-05 13:12:41 -0700 | [diff] [blame] | 816 | if (!HAS_PCH_NOP(dev)) { |
| 817 | sde_ier = I915_READ(SDEIER); |
| 818 | I915_WRITE(SDEIER, 0); |
| 819 | POSTING_READ(SDEIER); |
| 820 | } |
Paulo Zanoni | 44498ae | 2013-02-22 17:05:28 -0300 | [diff] [blame] | 821 | |
Chris Wilson | 0e43406 | 2012-05-09 21:45:44 +0100 | [diff] [blame] | 822 | gt_iir = I915_READ(GTIIR); |
| 823 | if (gt_iir) { |
| 824 | snb_gt_irq_handler(dev, dev_priv, gt_iir); |
| 825 | I915_WRITE(GTIIR, gt_iir); |
| 826 | ret = IRQ_HANDLED; |
| 827 | } |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 828 | |
| 829 | de_iir = I915_READ(DEIIR); |
Chris Wilson | 0e43406 | 2012-05-09 21:45:44 +0100 | [diff] [blame] | 830 | if (de_iir) { |
Daniel Vetter | ce99c25 | 2012-12-01 13:53:47 +0100 | [diff] [blame] | 831 | if (de_iir & DE_AUX_CHANNEL_A_IVB) |
| 832 | dp_aux_irq_handler(dev); |
| 833 | |
Chris Wilson | 0e43406 | 2012-05-09 21:45:44 +0100 | [diff] [blame] | 834 | if (de_iir & DE_GSE_IVB) |
| 835 | intel_opregion_gse_intr(dev); |
| 836 | |
| 837 | for (i = 0; i < 3; i++) { |
Daniel Vetter | 74d4444 | 2012-10-02 17:54:35 +0200 | [diff] [blame] | 838 | if (de_iir & (DE_PIPEA_VBLANK_IVB << (5 * i))) |
| 839 | drm_handle_vblank(dev, i); |
Chris Wilson | 0e43406 | 2012-05-09 21:45:44 +0100 | [diff] [blame] | 840 | if (de_iir & (DE_PLANEA_FLIP_DONE_IVB << (5 * i))) { |
| 841 | intel_prepare_page_flip(dev, i); |
| 842 | intel_finish_page_flip_plane(dev, i); |
| 843 | } |
Chris Wilson | 0e43406 | 2012-05-09 21:45:44 +0100 | [diff] [blame] | 844 | } |
| 845 | |
| 846 | /* check event from PCH */ |
Ben Widawsky | ab5c608 | 2013-04-05 13:12:41 -0700 | [diff] [blame] | 847 | if (!HAS_PCH_NOP(dev) && (de_iir & DE_PCH_EVENT_IVB)) { |
Chris Wilson | 0e43406 | 2012-05-09 21:45:44 +0100 | [diff] [blame] | 848 | u32 pch_iir = I915_READ(SDEIIR); |
| 849 | |
Adam Jackson | 23e81d6 | 2012-06-06 15:45:44 -0400 | [diff] [blame] | 850 | cpt_irq_handler(dev, pch_iir); |
Chris Wilson | 0e43406 | 2012-05-09 21:45:44 +0100 | [diff] [blame] | 851 | |
| 852 | /* clear PCH hotplug event before clear CPU irq */ |
| 853 | I915_WRITE(SDEIIR, pch_iir); |
| 854 | } |
| 855 | |
| 856 | I915_WRITE(DEIIR, de_iir); |
| 857 | ret = IRQ_HANDLED; |
| 858 | } |
| 859 | |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 860 | pm_iir = I915_READ(GEN6_PMIIR); |
Chris Wilson | 0e43406 | 2012-05-09 21:45:44 +0100 | [diff] [blame] | 861 | if (pm_iir) { |
| 862 | if (pm_iir & GEN6_PM_DEFERRED_EVENTS) |
| 863 | gen6_queue_rps_work(dev_priv, pm_iir); |
| 864 | I915_WRITE(GEN6_PMIIR, pm_iir); |
| 865 | ret = IRQ_HANDLED; |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 866 | } |
| 867 | |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 868 | I915_WRITE(DEIER, de_ier); |
| 869 | POSTING_READ(DEIER); |
Ben Widawsky | ab5c608 | 2013-04-05 13:12:41 -0700 | [diff] [blame] | 870 | if (!HAS_PCH_NOP(dev)) { |
| 871 | I915_WRITE(SDEIER, sde_ier); |
| 872 | POSTING_READ(SDEIER); |
| 873 | } |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 874 | |
| 875 | return ret; |
| 876 | } |
| 877 | |
Daniel Vetter | e7b4c6b | 2012-03-30 20:24:35 +0200 | [diff] [blame] | 878 | static void ilk_gt_irq_handler(struct drm_device *dev, |
| 879 | struct drm_i915_private *dev_priv, |
| 880 | u32 gt_iir) |
| 881 | { |
| 882 | if (gt_iir & (GT_USER_INTERRUPT | GT_PIPE_NOTIFY)) |
| 883 | notify_ring(dev, &dev_priv->ring[RCS]); |
| 884 | if (gt_iir & GT_BSD_USER_INTERRUPT) |
| 885 | notify_ring(dev, &dev_priv->ring[VCS]); |
| 886 | } |
| 887 | |
Daniel Vetter | ff1f525 | 2012-10-02 15:10:55 +0200 | [diff] [blame] | 888 | static irqreturn_t ironlake_irq_handler(int irq, void *arg) |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 889 | { |
Jesse Barnes | 4697995 | 2011-04-07 13:53:55 -0700 | [diff] [blame] | 890 | struct drm_device *dev = (struct drm_device *) arg; |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 891 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 892 | int ret = IRQ_NONE; |
Paulo Zanoni | 44498ae | 2013-02-22 17:05:28 -0300 | [diff] [blame] | 893 | u32 de_iir, gt_iir, de_ier, pm_iir, sde_ier; |
Xiang, Haihao | 881f47b | 2010-09-19 14:40:43 +0100 | [diff] [blame] | 894 | |
Jesse Barnes | 4697995 | 2011-04-07 13:53:55 -0700 | [diff] [blame] | 895 | atomic_inc(&dev_priv->irq_received); |
| 896 | |
Zou, Nanhai | 2d109a8 | 2009-11-06 02:13:01 +0000 | [diff] [blame] | 897 | /* disable master interrupt before clearing iir */ |
| 898 | de_ier = I915_READ(DEIER); |
| 899 | I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL); |
Chris Wilson | 3143a2b | 2010-11-16 15:55:10 +0000 | [diff] [blame] | 900 | POSTING_READ(DEIER); |
Zou, Nanhai | 2d109a8 | 2009-11-06 02:13:01 +0000 | [diff] [blame] | 901 | |
Paulo Zanoni | 44498ae | 2013-02-22 17:05:28 -0300 | [diff] [blame] | 902 | /* Disable south interrupts. We'll only write to SDEIIR once, so further |
| 903 | * interrupts will will be stored on its back queue, and then we'll be |
| 904 | * able to process them after we restore SDEIER (as soon as we restore |
| 905 | * it, we'll get an interrupt if SDEIIR still has something to process |
| 906 | * due to its back queue). */ |
| 907 | sde_ier = I915_READ(SDEIER); |
| 908 | I915_WRITE(SDEIER, 0); |
| 909 | POSTING_READ(SDEIER); |
| 910 | |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 911 | de_iir = I915_READ(DEIIR); |
| 912 | gt_iir = I915_READ(GTIIR); |
Jesse Barnes | 3b8d8d9 | 2010-12-17 14:19:02 -0800 | [diff] [blame] | 913 | pm_iir = I915_READ(GEN6_PMIIR); |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 914 | |
Daniel Vetter | acd15b6 | 2012-11-30 11:24:50 +0100 | [diff] [blame] | 915 | if (de_iir == 0 && gt_iir == 0 && (!IS_GEN6(dev) || pm_iir == 0)) |
Zou Nan hai | c7c8510 | 2010-01-15 10:29:06 +0800 | [diff] [blame] | 916 | goto done; |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 917 | |
Zou Nan hai | c7c8510 | 2010-01-15 10:29:06 +0800 | [diff] [blame] | 918 | ret = IRQ_HANDLED; |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 919 | |
Daniel Vetter | e7b4c6b | 2012-03-30 20:24:35 +0200 | [diff] [blame] | 920 | if (IS_GEN5(dev)) |
| 921 | ilk_gt_irq_handler(dev, dev_priv, gt_iir); |
| 922 | else |
| 923 | snb_gt_irq_handler(dev, dev_priv, gt_iir); |
Zou Nan hai | c7c8510 | 2010-01-15 10:29:06 +0800 | [diff] [blame] | 924 | |
Daniel Vetter | ce99c25 | 2012-12-01 13:53:47 +0100 | [diff] [blame] | 925 | if (de_iir & DE_AUX_CHANNEL_A) |
| 926 | dp_aux_irq_handler(dev); |
| 927 | |
Zou Nan hai | c7c8510 | 2010-01-15 10:29:06 +0800 | [diff] [blame] | 928 | if (de_iir & DE_GSE) |
Chris Wilson | 3b61796 | 2010-08-24 09:02:58 +0100 | [diff] [blame] | 929 | intel_opregion_gse_intr(dev); |
Zou Nan hai | c7c8510 | 2010-01-15 10:29:06 +0800 | [diff] [blame] | 930 | |
Daniel Vetter | 74d4444 | 2012-10-02 17:54:35 +0200 | [diff] [blame] | 931 | if (de_iir & DE_PIPEA_VBLANK) |
| 932 | drm_handle_vblank(dev, 0); |
| 933 | |
| 934 | if (de_iir & DE_PIPEB_VBLANK) |
| 935 | drm_handle_vblank(dev, 1); |
| 936 | |
Zhenyu Wang | f072d2e | 2010-02-09 09:46:19 +0800 | [diff] [blame] | 937 | if (de_iir & DE_PLANEA_FLIP_DONE) { |
Jesse Barnes | 013d5aa | 2010-01-29 11:18:31 -0800 | [diff] [blame] | 938 | intel_prepare_page_flip(dev, 0); |
Chris Wilson | 2bbda38 | 2010-09-02 17:59:39 +0100 | [diff] [blame] | 939 | intel_finish_page_flip_plane(dev, 0); |
Jesse Barnes | 013d5aa | 2010-01-29 11:18:31 -0800 | [diff] [blame] | 940 | } |
| 941 | |
Zhenyu Wang | f072d2e | 2010-02-09 09:46:19 +0800 | [diff] [blame] | 942 | if (de_iir & DE_PLANEB_FLIP_DONE) { |
| 943 | intel_prepare_page_flip(dev, 1); |
Chris Wilson | 2bbda38 | 2010-09-02 17:59:39 +0100 | [diff] [blame] | 944 | intel_finish_page_flip_plane(dev, 1); |
Jesse Barnes | 013d5aa | 2010-01-29 11:18:31 -0800 | [diff] [blame] | 945 | } |
Li Peng | c062df6 | 2010-01-23 00:12:58 +0800 | [diff] [blame] | 946 | |
Zou Nan hai | c7c8510 | 2010-01-15 10:29:06 +0800 | [diff] [blame] | 947 | /* check event from PCH */ |
Jesse Barnes | 776ad80 | 2011-01-04 15:09:39 -0800 | [diff] [blame] | 948 | if (de_iir & DE_PCH_EVENT) { |
Daniel Vetter | acd15b6 | 2012-11-30 11:24:50 +0100 | [diff] [blame] | 949 | u32 pch_iir = I915_READ(SDEIIR); |
| 950 | |
Adam Jackson | 23e81d6 | 2012-06-06 15:45:44 -0400 | [diff] [blame] | 951 | if (HAS_PCH_CPT(dev)) |
| 952 | cpt_irq_handler(dev, pch_iir); |
| 953 | else |
| 954 | ibx_irq_handler(dev, pch_iir); |
Daniel Vetter | acd15b6 | 2012-11-30 11:24:50 +0100 | [diff] [blame] | 955 | |
| 956 | /* should clear PCH hotplug event before clear CPU irq */ |
| 957 | I915_WRITE(SDEIIR, pch_iir); |
Jesse Barnes | 776ad80 | 2011-01-04 15:09:39 -0800 | [diff] [blame] | 958 | } |
Zou Nan hai | c7c8510 | 2010-01-15 10:29:06 +0800 | [diff] [blame] | 959 | |
Daniel Vetter | 73edd18f | 2012-08-08 23:35:37 +0200 | [diff] [blame] | 960 | if (IS_GEN5(dev) && de_iir & DE_PCU_EVENT) |
| 961 | ironlake_handle_rps_change(dev); |
Jesse Barnes | f97108d | 2010-01-29 11:27:07 -0800 | [diff] [blame] | 962 | |
Chris Wilson | fc6826d | 2012-04-15 11:56:03 +0100 | [diff] [blame] | 963 | if (IS_GEN6(dev) && pm_iir & GEN6_PM_DEFERRED_EVENTS) |
| 964 | gen6_queue_rps_work(dev_priv, pm_iir); |
Jesse Barnes | 3b8d8d9 | 2010-12-17 14:19:02 -0800 | [diff] [blame] | 965 | |
Zou Nan hai | c7c8510 | 2010-01-15 10:29:06 +0800 | [diff] [blame] | 966 | I915_WRITE(GTIIR, gt_iir); |
| 967 | I915_WRITE(DEIIR, de_iir); |
Ben Widawsky | 4912d04 | 2011-04-25 11:25:20 -0700 | [diff] [blame] | 968 | I915_WRITE(GEN6_PMIIR, pm_iir); |
Zou Nan hai | c7c8510 | 2010-01-15 10:29:06 +0800 | [diff] [blame] | 969 | |
| 970 | done: |
Zou, Nanhai | 2d109a8 | 2009-11-06 02:13:01 +0000 | [diff] [blame] | 971 | I915_WRITE(DEIER, de_ier); |
Chris Wilson | 3143a2b | 2010-11-16 15:55:10 +0000 | [diff] [blame] | 972 | POSTING_READ(DEIER); |
Paulo Zanoni | 44498ae | 2013-02-22 17:05:28 -0300 | [diff] [blame] | 973 | I915_WRITE(SDEIER, sde_ier); |
| 974 | POSTING_READ(SDEIER); |
Zou, Nanhai | 2d109a8 | 2009-11-06 02:13:01 +0000 | [diff] [blame] | 975 | |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 976 | return ret; |
| 977 | } |
| 978 | |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 979 | /** |
| 980 | * i915_error_work_func - do process context error handling work |
| 981 | * @work: work struct |
| 982 | * |
| 983 | * Fire an error uevent so userspace can see that a hang or error |
| 984 | * was detected. |
| 985 | */ |
| 986 | static void i915_error_work_func(struct work_struct *work) |
| 987 | { |
Daniel Vetter | 1f83fee | 2012-11-15 17:17:22 +0100 | [diff] [blame] | 988 | struct i915_gpu_error *error = container_of(work, struct i915_gpu_error, |
| 989 | work); |
| 990 | drm_i915_private_t *dev_priv = container_of(error, drm_i915_private_t, |
| 991 | gpu_error); |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 992 | struct drm_device *dev = dev_priv->dev; |
Daniel Vetter | f69061b | 2012-12-06 09:01:42 +0100 | [diff] [blame] | 993 | struct intel_ring_buffer *ring; |
Ben Gamari | f316a42 | 2009-09-14 17:48:46 -0400 | [diff] [blame] | 994 | char *error_event[] = { "ERROR=1", NULL }; |
| 995 | char *reset_event[] = { "RESET=1", NULL }; |
| 996 | char *reset_done_event[] = { "ERROR=0", NULL }; |
Daniel Vetter | f69061b | 2012-12-06 09:01:42 +0100 | [diff] [blame] | 997 | int i, ret; |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 998 | |
Ben Gamari | f316a42 | 2009-09-14 17:48:46 -0400 | [diff] [blame] | 999 | kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, error_event); |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1000 | |
Daniel Vetter | 7db0ba2 | 2012-12-06 16:23:37 +0100 | [diff] [blame] | 1001 | /* |
| 1002 | * Note that there's only one work item which does gpu resets, so we |
| 1003 | * need not worry about concurrent gpu resets potentially incrementing |
| 1004 | * error->reset_counter twice. We only need to take care of another |
| 1005 | * racing irq/hangcheck declaring the gpu dead for a second time. A |
| 1006 | * quick check for that is good enough: schedule_work ensures the |
| 1007 | * correct ordering between hang detection and this work item, and since |
| 1008 | * the reset in-progress bit is only ever set by code outside of this |
| 1009 | * work we don't need to worry about any other races. |
| 1010 | */ |
| 1011 | if (i915_reset_in_progress(error) && !i915_terminally_wedged(error)) { |
Chris Wilson | f803aa5 | 2010-09-19 12:38:26 +0100 | [diff] [blame] | 1012 | DRM_DEBUG_DRIVER("resetting chip\n"); |
Daniel Vetter | 7db0ba2 | 2012-12-06 16:23:37 +0100 | [diff] [blame] | 1013 | kobject_uevent_env(&dev->primary->kdev.kobj, KOBJ_CHANGE, |
| 1014 | reset_event); |
Daniel Vetter | 1f83fee | 2012-11-15 17:17:22 +0100 | [diff] [blame] | 1015 | |
Daniel Vetter | f69061b | 2012-12-06 09:01:42 +0100 | [diff] [blame] | 1016 | ret = i915_reset(dev); |
| 1017 | |
| 1018 | if (ret == 0) { |
| 1019 | /* |
| 1020 | * After all the gem state is reset, increment the reset |
| 1021 | * counter and wake up everyone waiting for the reset to |
| 1022 | * complete. |
| 1023 | * |
| 1024 | * Since unlock operations are a one-sided barrier only, |
| 1025 | * we need to insert a barrier here to order any seqno |
| 1026 | * updates before |
| 1027 | * the counter increment. |
| 1028 | */ |
| 1029 | smp_mb__before_atomic_inc(); |
| 1030 | atomic_inc(&dev_priv->gpu_error.reset_counter); |
| 1031 | |
| 1032 | kobject_uevent_env(&dev->primary->kdev.kobj, |
| 1033 | KOBJ_CHANGE, reset_done_event); |
Daniel Vetter | 1f83fee | 2012-11-15 17:17:22 +0100 | [diff] [blame] | 1034 | } else { |
| 1035 | atomic_set(&error->reset_counter, I915_WEDGED); |
Ben Gamari | f316a42 | 2009-09-14 17:48:46 -0400 | [diff] [blame] | 1036 | } |
Daniel Vetter | 1f83fee | 2012-11-15 17:17:22 +0100 | [diff] [blame] | 1037 | |
Daniel Vetter | f69061b | 2012-12-06 09:01:42 +0100 | [diff] [blame] | 1038 | for_each_ring(ring, dev_priv, i) |
| 1039 | wake_up_all(&ring->irq_queue); |
| 1040 | |
Ville Syrjälä | 96a0291 | 2013-02-18 19:08:49 +0200 | [diff] [blame] | 1041 | intel_display_handle_reset(dev); |
| 1042 | |
Daniel Vetter | 1f83fee | 2012-11-15 17:17:22 +0100 | [diff] [blame] | 1043 | wake_up_all(&dev_priv->gpu_error.reset_queue); |
Ben Gamari | f316a42 | 2009-09-14 17:48:46 -0400 | [diff] [blame] | 1044 | } |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1045 | } |
| 1046 | |
Daniel Vetter | 85f9e50 | 2012-08-31 21:42:26 +0200 | [diff] [blame] | 1047 | /* NB: please notice the memset */ |
| 1048 | static void i915_get_extra_instdone(struct drm_device *dev, |
| 1049 | uint32_t *instdone) |
| 1050 | { |
| 1051 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1052 | memset(instdone, 0, sizeof(*instdone) * I915_NUM_INSTDONE_REG); |
| 1053 | |
| 1054 | switch(INTEL_INFO(dev)->gen) { |
| 1055 | case 2: |
| 1056 | case 3: |
| 1057 | instdone[0] = I915_READ(INSTDONE); |
| 1058 | break; |
| 1059 | case 4: |
| 1060 | case 5: |
| 1061 | case 6: |
| 1062 | instdone[0] = I915_READ(INSTDONE_I965); |
| 1063 | instdone[1] = I915_READ(INSTDONE1); |
| 1064 | break; |
| 1065 | default: |
| 1066 | WARN_ONCE(1, "Unsupported platform\n"); |
| 1067 | case 7: |
| 1068 | instdone[0] = I915_READ(GEN7_INSTDONE_1); |
| 1069 | instdone[1] = I915_READ(GEN7_SC_INSTDONE); |
| 1070 | instdone[2] = I915_READ(GEN7_SAMPLER_INSTDONE); |
| 1071 | instdone[3] = I915_READ(GEN7_ROW_INSTDONE); |
| 1072 | break; |
| 1073 | } |
| 1074 | } |
| 1075 | |
Chris Wilson | 3bd3c93 | 2010-08-19 08:19:30 +0100 | [diff] [blame] | 1076 | #ifdef CONFIG_DEBUG_FS |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1077 | static struct drm_i915_error_object * |
Ben Widawsky | d0d045e | 2013-02-24 18:10:00 -0800 | [diff] [blame] | 1078 | i915_error_object_create_sized(struct drm_i915_private *dev_priv, |
| 1079 | struct drm_i915_gem_object *src, |
| 1080 | const int num_pages) |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1081 | { |
| 1082 | struct drm_i915_error_object *dst; |
Ben Widawsky | d0d045e | 2013-02-24 18:10:00 -0800 | [diff] [blame] | 1083 | int i; |
Chris Wilson | e56660d | 2010-08-07 11:01:26 +0100 | [diff] [blame] | 1084 | u32 reloc_offset; |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1085 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1086 | if (src == NULL || src->pages == NULL) |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1087 | return NULL; |
| 1088 | |
Ben Widawsky | d0d045e | 2013-02-24 18:10:00 -0800 | [diff] [blame] | 1089 | dst = kmalloc(sizeof(*dst) + num_pages * sizeof(u32 *), GFP_ATOMIC); |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1090 | if (dst == NULL) |
| 1091 | return NULL; |
| 1092 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1093 | reloc_offset = src->gtt_offset; |
Ben Widawsky | d0d045e | 2013-02-24 18:10:00 -0800 | [diff] [blame] | 1094 | for (i = 0; i < num_pages; i++) { |
Andrew Morton | 788885a | 2010-05-11 14:07:05 -0700 | [diff] [blame] | 1095 | unsigned long flags; |
Chris Wilson | e56660d | 2010-08-07 11:01:26 +0100 | [diff] [blame] | 1096 | void *d; |
Andrew Morton | 788885a | 2010-05-11 14:07:05 -0700 | [diff] [blame] | 1097 | |
Chris Wilson | e56660d | 2010-08-07 11:01:26 +0100 | [diff] [blame] | 1098 | d = kmalloc(PAGE_SIZE, GFP_ATOMIC); |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1099 | if (d == NULL) |
| 1100 | goto unwind; |
Chris Wilson | e56660d | 2010-08-07 11:01:26 +0100 | [diff] [blame] | 1101 | |
Andrew Morton | 788885a | 2010-05-11 14:07:05 -0700 | [diff] [blame] | 1102 | local_irq_save(flags); |
Ben Widawsky | 5d4545a | 2013-01-17 12:45:15 -0800 | [diff] [blame] | 1103 | if (reloc_offset < dev_priv->gtt.mappable_end && |
Daniel Vetter | 74898d7 | 2012-02-15 23:50:22 +0100 | [diff] [blame] | 1104 | src->has_global_gtt_mapping) { |
Chris Wilson | 172975aa | 2011-12-14 13:57:25 +0100 | [diff] [blame] | 1105 | void __iomem *s; |
| 1106 | |
| 1107 | /* Simply ignore tiling or any overlapping fence. |
| 1108 | * It's part of the error state, and this hopefully |
| 1109 | * captures what the GPU read. |
| 1110 | */ |
| 1111 | |
Ben Widawsky | 5d4545a | 2013-01-17 12:45:15 -0800 | [diff] [blame] | 1112 | s = io_mapping_map_atomic_wc(dev_priv->gtt.mappable, |
Chris Wilson | 172975aa | 2011-12-14 13:57:25 +0100 | [diff] [blame] | 1113 | reloc_offset); |
| 1114 | memcpy_fromio(d, s, PAGE_SIZE); |
| 1115 | io_mapping_unmap_atomic(s); |
Chris Wilson | 960e356 | 2012-11-15 11:32:23 +0000 | [diff] [blame] | 1116 | } else if (src->stolen) { |
| 1117 | unsigned long offset; |
| 1118 | |
| 1119 | offset = dev_priv->mm.stolen_base; |
| 1120 | offset += src->stolen->start; |
| 1121 | offset += i << PAGE_SHIFT; |
| 1122 | |
Daniel Vetter | 1a240d4 | 2012-11-29 22:18:51 +0100 | [diff] [blame] | 1123 | memcpy_fromio(d, (void __iomem *) offset, PAGE_SIZE); |
Chris Wilson | 172975aa | 2011-12-14 13:57:25 +0100 | [diff] [blame] | 1124 | } else { |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1125 | struct page *page; |
Chris Wilson | 172975aa | 2011-12-14 13:57:25 +0100 | [diff] [blame] | 1126 | void *s; |
| 1127 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1128 | page = i915_gem_object_get_page(src, i); |
Chris Wilson | 172975aa | 2011-12-14 13:57:25 +0100 | [diff] [blame] | 1129 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1130 | drm_clflush_pages(&page, 1); |
| 1131 | |
| 1132 | s = kmap_atomic(page); |
Chris Wilson | 172975aa | 2011-12-14 13:57:25 +0100 | [diff] [blame] | 1133 | memcpy(d, s, PAGE_SIZE); |
| 1134 | kunmap_atomic(s); |
| 1135 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1136 | drm_clflush_pages(&page, 1); |
Chris Wilson | 172975aa | 2011-12-14 13:57:25 +0100 | [diff] [blame] | 1137 | } |
Andrew Morton | 788885a | 2010-05-11 14:07:05 -0700 | [diff] [blame] | 1138 | local_irq_restore(flags); |
Chris Wilson | e56660d | 2010-08-07 11:01:26 +0100 | [diff] [blame] | 1139 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1140 | dst->pages[i] = d; |
Chris Wilson | e56660d | 2010-08-07 11:01:26 +0100 | [diff] [blame] | 1141 | |
| 1142 | reloc_offset += PAGE_SIZE; |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1143 | } |
Ben Widawsky | d0d045e | 2013-02-24 18:10:00 -0800 | [diff] [blame] | 1144 | dst->page_count = num_pages; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1145 | dst->gtt_offset = src->gtt_offset; |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1146 | |
| 1147 | return dst; |
| 1148 | |
| 1149 | unwind: |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1150 | while (i--) |
| 1151 | kfree(dst->pages[i]); |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1152 | kfree(dst); |
| 1153 | return NULL; |
| 1154 | } |
Ben Widawsky | d0d045e | 2013-02-24 18:10:00 -0800 | [diff] [blame] | 1155 | #define i915_error_object_create(dev_priv, src) \ |
| 1156 | i915_error_object_create_sized((dev_priv), (src), \ |
| 1157 | (src)->base.size>>PAGE_SHIFT) |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1158 | |
| 1159 | static void |
| 1160 | i915_error_object_free(struct drm_i915_error_object *obj) |
| 1161 | { |
| 1162 | int page; |
| 1163 | |
| 1164 | if (obj == NULL) |
| 1165 | return; |
| 1166 | |
| 1167 | for (page = 0; page < obj->page_count; page++) |
| 1168 | kfree(obj->pages[page]); |
| 1169 | |
| 1170 | kfree(obj); |
| 1171 | } |
| 1172 | |
Daniel Vetter | 742cbee | 2012-04-27 15:17:39 +0200 | [diff] [blame] | 1173 | void |
| 1174 | i915_error_state_free(struct kref *error_ref) |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1175 | { |
Daniel Vetter | 742cbee | 2012-04-27 15:17:39 +0200 | [diff] [blame] | 1176 | struct drm_i915_error_state *error = container_of(error_ref, |
| 1177 | typeof(*error), ref); |
Chris Wilson | e2f973d | 2011-01-27 19:15:11 +0000 | [diff] [blame] | 1178 | int i; |
| 1179 | |
Chris Wilson | 52d39a2 | 2012-02-15 11:25:37 +0000 | [diff] [blame] | 1180 | for (i = 0; i < ARRAY_SIZE(error->ring); i++) { |
| 1181 | i915_error_object_free(error->ring[i].batchbuffer); |
| 1182 | i915_error_object_free(error->ring[i].ringbuffer); |
| 1183 | kfree(error->ring[i].requests); |
| 1184 | } |
Chris Wilson | e2f973d | 2011-01-27 19:15:11 +0000 | [diff] [blame] | 1185 | |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1186 | kfree(error->active_bo); |
Chris Wilson | 6ef3d42 | 2010-08-04 20:26:07 +0100 | [diff] [blame] | 1187 | kfree(error->overlay); |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1188 | kfree(error); |
| 1189 | } |
Chris Wilson | 1b50247 | 2012-04-24 15:47:30 +0100 | [diff] [blame] | 1190 | static void capture_bo(struct drm_i915_error_buffer *err, |
| 1191 | struct drm_i915_gem_object *obj) |
| 1192 | { |
| 1193 | err->size = obj->base.size; |
| 1194 | err->name = obj->base.name; |
Chris Wilson | 0201f1e | 2012-07-20 12:41:01 +0100 | [diff] [blame] | 1195 | err->rseqno = obj->last_read_seqno; |
| 1196 | err->wseqno = obj->last_write_seqno; |
Chris Wilson | 1b50247 | 2012-04-24 15:47:30 +0100 | [diff] [blame] | 1197 | err->gtt_offset = obj->gtt_offset; |
| 1198 | err->read_domains = obj->base.read_domains; |
| 1199 | err->write_domain = obj->base.write_domain; |
| 1200 | err->fence_reg = obj->fence_reg; |
| 1201 | err->pinned = 0; |
| 1202 | if (obj->pin_count > 0) |
| 1203 | err->pinned = 1; |
| 1204 | if (obj->user_pin_count > 0) |
| 1205 | err->pinned = -1; |
| 1206 | err->tiling = obj->tiling_mode; |
| 1207 | err->dirty = obj->dirty; |
| 1208 | err->purgeable = obj->madv != I915_MADV_WILLNEED; |
| 1209 | err->ring = obj->ring ? obj->ring->id : -1; |
| 1210 | err->cache_level = obj->cache_level; |
| 1211 | } |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1212 | |
Chris Wilson | 1b50247 | 2012-04-24 15:47:30 +0100 | [diff] [blame] | 1213 | static u32 capture_active_bo(struct drm_i915_error_buffer *err, |
| 1214 | int count, struct list_head *head) |
Chris Wilson | c724e8a | 2010-11-22 08:07:02 +0000 | [diff] [blame] | 1215 | { |
| 1216 | struct drm_i915_gem_object *obj; |
| 1217 | int i = 0; |
| 1218 | |
| 1219 | list_for_each_entry(obj, head, mm_list) { |
Chris Wilson | 1b50247 | 2012-04-24 15:47:30 +0100 | [diff] [blame] | 1220 | capture_bo(err++, obj); |
Chris Wilson | c724e8a | 2010-11-22 08:07:02 +0000 | [diff] [blame] | 1221 | if (++i == count) |
| 1222 | break; |
Chris Wilson | 1b50247 | 2012-04-24 15:47:30 +0100 | [diff] [blame] | 1223 | } |
Chris Wilson | c724e8a | 2010-11-22 08:07:02 +0000 | [diff] [blame] | 1224 | |
Chris Wilson | 1b50247 | 2012-04-24 15:47:30 +0100 | [diff] [blame] | 1225 | return i; |
| 1226 | } |
| 1227 | |
| 1228 | static u32 capture_pinned_bo(struct drm_i915_error_buffer *err, |
| 1229 | int count, struct list_head *head) |
| 1230 | { |
| 1231 | struct drm_i915_gem_object *obj; |
| 1232 | int i = 0; |
| 1233 | |
| 1234 | list_for_each_entry(obj, head, gtt_list) { |
| 1235 | if (obj->pin_count == 0) |
| 1236 | continue; |
| 1237 | |
| 1238 | capture_bo(err++, obj); |
| 1239 | if (++i == count) |
| 1240 | break; |
Chris Wilson | c724e8a | 2010-11-22 08:07:02 +0000 | [diff] [blame] | 1241 | } |
| 1242 | |
| 1243 | return i; |
| 1244 | } |
| 1245 | |
Chris Wilson | 748ebc6 | 2010-10-24 10:28:47 +0100 | [diff] [blame] | 1246 | static void i915_gem_record_fences(struct drm_device *dev, |
| 1247 | struct drm_i915_error_state *error) |
| 1248 | { |
| 1249 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1250 | int i; |
| 1251 | |
| 1252 | /* Fences */ |
| 1253 | switch (INTEL_INFO(dev)->gen) { |
Daniel Vetter | 775d17b | 2011-10-09 21:52:01 +0200 | [diff] [blame] | 1254 | case 7: |
Chris Wilson | 748ebc6 | 2010-10-24 10:28:47 +0100 | [diff] [blame] | 1255 | case 6: |
Ville Syrjälä | 42b5aea | 2013-04-09 13:02:47 +0300 | [diff] [blame] | 1256 | for (i = 0; i < dev_priv->num_fence_regs; i++) |
Chris Wilson | 748ebc6 | 2010-10-24 10:28:47 +0100 | [diff] [blame] | 1257 | error->fence[i] = I915_READ64(FENCE_REG_SANDYBRIDGE_0 + (i * 8)); |
| 1258 | break; |
| 1259 | case 5: |
| 1260 | case 4: |
| 1261 | for (i = 0; i < 16; i++) |
| 1262 | error->fence[i] = I915_READ64(FENCE_REG_965_0 + (i * 8)); |
| 1263 | break; |
| 1264 | case 3: |
| 1265 | if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) |
| 1266 | for (i = 0; i < 8; i++) |
| 1267 | error->fence[i+8] = I915_READ(FENCE_REG_945_8 + (i * 4)); |
| 1268 | case 2: |
| 1269 | for (i = 0; i < 8; i++) |
| 1270 | error->fence[i] = I915_READ(FENCE_REG_830_0 + (i * 4)); |
| 1271 | break; |
| 1272 | |
Ben Widawsky | 7dbf9d6 | 2012-12-18 10:31:22 -0800 | [diff] [blame] | 1273 | default: |
| 1274 | BUG(); |
Chris Wilson | 748ebc6 | 2010-10-24 10:28:47 +0100 | [diff] [blame] | 1275 | } |
| 1276 | } |
| 1277 | |
Chris Wilson | bcfb2e2 | 2011-01-07 21:06:07 +0000 | [diff] [blame] | 1278 | static struct drm_i915_error_object * |
| 1279 | i915_error_first_batchbuffer(struct drm_i915_private *dev_priv, |
| 1280 | struct intel_ring_buffer *ring) |
| 1281 | { |
| 1282 | struct drm_i915_gem_object *obj; |
| 1283 | u32 seqno; |
| 1284 | |
| 1285 | if (!ring->get_seqno) |
| 1286 | return NULL; |
| 1287 | |
Daniel Vetter | b45305f | 2012-12-17 16:21:27 +0100 | [diff] [blame] | 1288 | if (HAS_BROKEN_CS_TLB(dev_priv->dev)) { |
| 1289 | u32 acthd = I915_READ(ACTHD); |
| 1290 | |
| 1291 | if (WARN_ON(ring->id != RCS)) |
| 1292 | return NULL; |
| 1293 | |
| 1294 | obj = ring->private; |
| 1295 | if (acthd >= obj->gtt_offset && |
| 1296 | acthd < obj->gtt_offset + obj->base.size) |
| 1297 | return i915_error_object_create(dev_priv, obj); |
| 1298 | } |
| 1299 | |
Chris Wilson | b2eadbc | 2012-08-09 10:58:30 +0100 | [diff] [blame] | 1300 | seqno = ring->get_seqno(ring, false); |
Chris Wilson | bcfb2e2 | 2011-01-07 21:06:07 +0000 | [diff] [blame] | 1301 | list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) { |
| 1302 | if (obj->ring != ring) |
| 1303 | continue; |
| 1304 | |
Chris Wilson | 0201f1e | 2012-07-20 12:41:01 +0100 | [diff] [blame] | 1305 | if (i915_seqno_passed(seqno, obj->last_read_seqno)) |
Chris Wilson | bcfb2e2 | 2011-01-07 21:06:07 +0000 | [diff] [blame] | 1306 | continue; |
| 1307 | |
| 1308 | if ((obj->base.read_domains & I915_GEM_DOMAIN_COMMAND) == 0) |
| 1309 | continue; |
| 1310 | |
| 1311 | /* We need to copy these to an anonymous buffer as the simplest |
| 1312 | * method to avoid being overwritten by userspace. |
| 1313 | */ |
| 1314 | return i915_error_object_create(dev_priv, obj); |
| 1315 | } |
| 1316 | |
| 1317 | return NULL; |
| 1318 | } |
| 1319 | |
Daniel Vetter | d27b1e0 | 2011-12-14 13:57:01 +0100 | [diff] [blame] | 1320 | static void i915_record_ring_state(struct drm_device *dev, |
| 1321 | struct drm_i915_error_state *error, |
| 1322 | struct intel_ring_buffer *ring) |
| 1323 | { |
| 1324 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1325 | |
Daniel Vetter | 33f3f51 | 2011-12-14 13:57:39 +0100 | [diff] [blame] | 1326 | if (INTEL_INFO(dev)->gen >= 6) { |
Chris Wilson | 12f5581 | 2012-07-05 17:14:01 +0100 | [diff] [blame] | 1327 | error->rc_psmi[ring->id] = I915_READ(ring->mmio_base + 0x50); |
Daniel Vetter | 33f3f51 | 2011-12-14 13:57:39 +0100 | [diff] [blame] | 1328 | error->fault_reg[ring->id] = I915_READ(RING_FAULT_REG(ring)); |
Daniel Vetter | 7e3b873 | 2012-02-01 22:26:45 +0100 | [diff] [blame] | 1329 | error->semaphore_mboxes[ring->id][0] |
| 1330 | = I915_READ(RING_SYNC_0(ring->mmio_base)); |
| 1331 | error->semaphore_mboxes[ring->id][1] |
| 1332 | = I915_READ(RING_SYNC_1(ring->mmio_base)); |
Chris Wilson | df2b23d | 2012-11-27 17:06:54 +0000 | [diff] [blame] | 1333 | error->semaphore_seqno[ring->id][0] = ring->sync_seqno[0]; |
| 1334 | error->semaphore_seqno[ring->id][1] = ring->sync_seqno[1]; |
Daniel Vetter | 33f3f51 | 2011-12-14 13:57:39 +0100 | [diff] [blame] | 1335 | } |
Daniel Vetter | c1cd90e | 2011-12-14 13:57:02 +0100 | [diff] [blame] | 1336 | |
Daniel Vetter | d27b1e0 | 2011-12-14 13:57:01 +0100 | [diff] [blame] | 1337 | if (INTEL_INFO(dev)->gen >= 4) { |
Daniel Vetter | 9d2f41f | 2012-04-02 21:41:45 +0200 | [diff] [blame] | 1338 | error->faddr[ring->id] = I915_READ(RING_DMA_FADD(ring->mmio_base)); |
Daniel Vetter | d27b1e0 | 2011-12-14 13:57:01 +0100 | [diff] [blame] | 1339 | error->ipeir[ring->id] = I915_READ(RING_IPEIR(ring->mmio_base)); |
| 1340 | error->ipehr[ring->id] = I915_READ(RING_IPEHR(ring->mmio_base)); |
| 1341 | error->instdone[ring->id] = I915_READ(RING_INSTDONE(ring->mmio_base)); |
Daniel Vetter | c1cd90e | 2011-12-14 13:57:02 +0100 | [diff] [blame] | 1342 | error->instps[ring->id] = I915_READ(RING_INSTPS(ring->mmio_base)); |
Ben Widawsky | 050ee91 | 2012-08-22 11:32:15 -0700 | [diff] [blame] | 1343 | if (ring->id == RCS) |
Daniel Vetter | d27b1e0 | 2011-12-14 13:57:01 +0100 | [diff] [blame] | 1344 | error->bbaddr = I915_READ64(BB_ADDR); |
Daniel Vetter | d27b1e0 | 2011-12-14 13:57:01 +0100 | [diff] [blame] | 1345 | } else { |
Daniel Vetter | 9d2f41f | 2012-04-02 21:41:45 +0200 | [diff] [blame] | 1346 | error->faddr[ring->id] = I915_READ(DMA_FADD_I8XX); |
Daniel Vetter | d27b1e0 | 2011-12-14 13:57:01 +0100 | [diff] [blame] | 1347 | error->ipeir[ring->id] = I915_READ(IPEIR); |
| 1348 | error->ipehr[ring->id] = I915_READ(IPEHR); |
| 1349 | error->instdone[ring->id] = I915_READ(INSTDONE); |
Daniel Vetter | d27b1e0 | 2011-12-14 13:57:01 +0100 | [diff] [blame] | 1350 | } |
| 1351 | |
Ben Widawsky | 9574b3f | 2012-04-26 16:03:01 -0700 | [diff] [blame] | 1352 | error->waiting[ring->id] = waitqueue_active(&ring->irq_queue); |
Daniel Vetter | c1cd90e | 2011-12-14 13:57:02 +0100 | [diff] [blame] | 1353 | error->instpm[ring->id] = I915_READ(RING_INSTPM(ring->mmio_base)); |
Chris Wilson | b2eadbc | 2012-08-09 10:58:30 +0100 | [diff] [blame] | 1354 | error->seqno[ring->id] = ring->get_seqno(ring, false); |
Daniel Vetter | d27b1e0 | 2011-12-14 13:57:01 +0100 | [diff] [blame] | 1355 | error->acthd[ring->id] = intel_ring_get_active_head(ring); |
Daniel Vetter | c1cd90e | 2011-12-14 13:57:02 +0100 | [diff] [blame] | 1356 | error->head[ring->id] = I915_READ_HEAD(ring); |
| 1357 | error->tail[ring->id] = I915_READ_TAIL(ring); |
Chris Wilson | 0f3b684 | 2013-01-15 12:05:55 +0000 | [diff] [blame] | 1358 | error->ctl[ring->id] = I915_READ_CTL(ring); |
Daniel Vetter | 7e3b873 | 2012-02-01 22:26:45 +0100 | [diff] [blame] | 1359 | |
| 1360 | error->cpu_ring_head[ring->id] = ring->head; |
| 1361 | error->cpu_ring_tail[ring->id] = ring->tail; |
Daniel Vetter | d27b1e0 | 2011-12-14 13:57:01 +0100 | [diff] [blame] | 1362 | } |
| 1363 | |
Ben Widawsky | 8c123e5 | 2013-03-04 17:00:29 -0800 | [diff] [blame] | 1364 | |
| 1365 | static void i915_gem_record_active_context(struct intel_ring_buffer *ring, |
| 1366 | struct drm_i915_error_state *error, |
| 1367 | struct drm_i915_error_ring *ering) |
| 1368 | { |
| 1369 | struct drm_i915_private *dev_priv = ring->dev->dev_private; |
| 1370 | struct drm_i915_gem_object *obj; |
| 1371 | |
| 1372 | /* Currently render ring is the only HW context user */ |
| 1373 | if (ring->id != RCS || !error->ccid) |
| 1374 | return; |
| 1375 | |
| 1376 | list_for_each_entry(obj, &dev_priv->mm.bound_list, gtt_list) { |
| 1377 | if ((error->ccid & PAGE_MASK) == obj->gtt_offset) { |
| 1378 | ering->ctx = i915_error_object_create_sized(dev_priv, |
| 1379 | obj, 1); |
| 1380 | } |
| 1381 | } |
| 1382 | } |
| 1383 | |
Chris Wilson | 52d39a2 | 2012-02-15 11:25:37 +0000 | [diff] [blame] | 1384 | static void i915_gem_record_rings(struct drm_device *dev, |
| 1385 | struct drm_i915_error_state *error) |
| 1386 | { |
| 1387 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 1388 | struct intel_ring_buffer *ring; |
Chris Wilson | 52d39a2 | 2012-02-15 11:25:37 +0000 | [diff] [blame] | 1389 | struct drm_i915_gem_request *request; |
| 1390 | int i, count; |
| 1391 | |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 1392 | for_each_ring(ring, dev_priv, i) { |
Chris Wilson | 52d39a2 | 2012-02-15 11:25:37 +0000 | [diff] [blame] | 1393 | i915_record_ring_state(dev, error, ring); |
| 1394 | |
| 1395 | error->ring[i].batchbuffer = |
| 1396 | i915_error_first_batchbuffer(dev_priv, ring); |
| 1397 | |
| 1398 | error->ring[i].ringbuffer = |
| 1399 | i915_error_object_create(dev_priv, ring->obj); |
| 1400 | |
Ben Widawsky | 8c123e5 | 2013-03-04 17:00:29 -0800 | [diff] [blame] | 1401 | |
| 1402 | i915_gem_record_active_context(ring, error, &error->ring[i]); |
| 1403 | |
Chris Wilson | 52d39a2 | 2012-02-15 11:25:37 +0000 | [diff] [blame] | 1404 | count = 0; |
| 1405 | list_for_each_entry(request, &ring->request_list, list) |
| 1406 | count++; |
| 1407 | |
| 1408 | error->ring[i].num_requests = count; |
| 1409 | error->ring[i].requests = |
| 1410 | kmalloc(count*sizeof(struct drm_i915_error_request), |
| 1411 | GFP_ATOMIC); |
| 1412 | if (error->ring[i].requests == NULL) { |
| 1413 | error->ring[i].num_requests = 0; |
| 1414 | continue; |
| 1415 | } |
| 1416 | |
| 1417 | count = 0; |
| 1418 | list_for_each_entry(request, &ring->request_list, list) { |
| 1419 | struct drm_i915_error_request *erq; |
| 1420 | |
| 1421 | erq = &error->ring[i].requests[count++]; |
| 1422 | erq->seqno = request->seqno; |
| 1423 | erq->jiffies = request->emitted_jiffies; |
Chris Wilson | ee4f42b | 2012-02-15 11:25:38 +0000 | [diff] [blame] | 1424 | erq->tail = request->tail; |
Chris Wilson | 52d39a2 | 2012-02-15 11:25:37 +0000 | [diff] [blame] | 1425 | } |
| 1426 | } |
| 1427 | } |
| 1428 | |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1429 | /** |
| 1430 | * i915_capture_error_state - capture an error record for later analysis |
| 1431 | * @dev: drm device |
| 1432 | * |
| 1433 | * Should be called when an error is detected (either a hang or an error |
| 1434 | * interrupt) to capture error state from the time of the error. Fills |
| 1435 | * out a structure which becomes available in debugfs for user level tools |
| 1436 | * to pick up. |
| 1437 | */ |
Jesse Barnes | 63eeaf3 | 2009-06-18 16:56:52 -0700 | [diff] [blame] | 1438 | static void i915_capture_error_state(struct drm_device *dev) |
| 1439 | { |
| 1440 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1441 | struct drm_i915_gem_object *obj; |
Jesse Barnes | 63eeaf3 | 2009-06-18 16:56:52 -0700 | [diff] [blame] | 1442 | struct drm_i915_error_state *error; |
| 1443 | unsigned long flags; |
Jesse Barnes | 9db4a9c | 2011-02-07 12:26:52 -0800 | [diff] [blame] | 1444 | int i, pipe; |
Jesse Barnes | 63eeaf3 | 2009-06-18 16:56:52 -0700 | [diff] [blame] | 1445 | |
Daniel Vetter | 99584db | 2012-11-14 17:14:04 +0100 | [diff] [blame] | 1446 | spin_lock_irqsave(&dev_priv->gpu_error.lock, flags); |
| 1447 | error = dev_priv->gpu_error.first_error; |
| 1448 | spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags); |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1449 | if (error) |
| 1450 | return; |
Jesse Barnes | 63eeaf3 | 2009-06-18 16:56:52 -0700 | [diff] [blame] | 1451 | |
Jesse Barnes | 9db4a9c | 2011-02-07 12:26:52 -0800 | [diff] [blame] | 1452 | /* Account for pipe specific data like PIPE*STAT */ |
Daniel Vetter | 33f3f51 | 2011-12-14 13:57:39 +0100 | [diff] [blame] | 1453 | error = kzalloc(sizeof(*error), GFP_ATOMIC); |
Jesse Barnes | 63eeaf3 | 2009-06-18 16:56:52 -0700 | [diff] [blame] | 1454 | if (!error) { |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1455 | DRM_DEBUG_DRIVER("out of memory, not capturing error state\n"); |
| 1456 | return; |
Jesse Barnes | 63eeaf3 | 2009-06-18 16:56:52 -0700 | [diff] [blame] | 1457 | } |
| 1458 | |
Paulo Zanoni | 5d83d29 | 2013-03-06 20:03:22 -0300 | [diff] [blame] | 1459 | DRM_INFO("capturing error event; look for more information in " |
Ben Widawsky | 2f86f19 | 2013-01-28 15:32:15 -0800 | [diff] [blame] | 1460 | "/sys/kernel/debug/dri/%d/i915_error_state\n", |
Chris Wilson | b6f7833 | 2011-02-01 14:15:55 +0000 | [diff] [blame] | 1461 | dev->primary->index); |
Chris Wilson | 2fa772f | 2010-10-01 13:23:27 +0100 | [diff] [blame] | 1462 | |
Daniel Vetter | 742cbee | 2012-04-27 15:17:39 +0200 | [diff] [blame] | 1463 | kref_init(&error->ref); |
Jesse Barnes | 63eeaf3 | 2009-06-18 16:56:52 -0700 | [diff] [blame] | 1464 | error->eir = I915_READ(EIR); |
| 1465 | error->pgtbl_er = I915_READ(PGTBL_ER); |
Ben Widawsky | 211816e | 2013-02-24 18:10:01 -0800 | [diff] [blame] | 1466 | if (HAS_HW_CONTEXTS(dev)) |
| 1467 | error->ccid = I915_READ(CCID); |
Ben Widawsky | be998e2 | 2012-04-26 16:03:00 -0700 | [diff] [blame] | 1468 | |
| 1469 | if (HAS_PCH_SPLIT(dev)) |
| 1470 | error->ier = I915_READ(DEIER) | I915_READ(GTIER); |
| 1471 | else if (IS_VALLEYVIEW(dev)) |
| 1472 | error->ier = I915_READ(GTIER) | I915_READ(VLV_IER); |
| 1473 | else if (IS_GEN2(dev)) |
| 1474 | error->ier = I915_READ16(IER); |
| 1475 | else |
| 1476 | error->ier = I915_READ(IER); |
| 1477 | |
Chris Wilson | 0f3b684 | 2013-01-15 12:05:55 +0000 | [diff] [blame] | 1478 | if (INTEL_INFO(dev)->gen >= 6) |
| 1479 | error->derrmr = I915_READ(DERRMR); |
| 1480 | |
| 1481 | if (IS_VALLEYVIEW(dev)) |
| 1482 | error->forcewake = I915_READ(FORCEWAKE_VLV); |
| 1483 | else if (INTEL_INFO(dev)->gen >= 7) |
| 1484 | error->forcewake = I915_READ(FORCEWAKE_MT); |
| 1485 | else if (INTEL_INFO(dev)->gen == 6) |
| 1486 | error->forcewake = I915_READ(FORCEWAKE); |
| 1487 | |
Paulo Zanoni | 4f3308b | 2013-03-22 14:24:16 -0300 | [diff] [blame] | 1488 | if (!HAS_PCH_SPLIT(dev)) |
| 1489 | for_each_pipe(pipe) |
| 1490 | error->pipestat[pipe] = I915_READ(PIPESTAT(pipe)); |
Daniel Vetter | d27b1e0 | 2011-12-14 13:57:01 +0100 | [diff] [blame] | 1491 | |
Daniel Vetter | 33f3f51 | 2011-12-14 13:57:39 +0100 | [diff] [blame] | 1492 | if (INTEL_INFO(dev)->gen >= 6) { |
Chris Wilson | f406839 | 2010-10-27 20:36:41 +0100 | [diff] [blame] | 1493 | error->error = I915_READ(ERROR_GEN6); |
Daniel Vetter | 33f3f51 | 2011-12-14 13:57:39 +0100 | [diff] [blame] | 1494 | error->done_reg = I915_READ(DONE_REG); |
| 1495 | } |
Chris Wilson | add354d | 2010-10-29 19:00:51 +0100 | [diff] [blame] | 1496 | |
Ben Widawsky | 71e172e | 2012-08-20 16:15:13 -0700 | [diff] [blame] | 1497 | if (INTEL_INFO(dev)->gen == 7) |
| 1498 | error->err_int = I915_READ(GEN7_ERR_INT); |
| 1499 | |
Ben Widawsky | 050ee91 | 2012-08-22 11:32:15 -0700 | [diff] [blame] | 1500 | i915_get_extra_instdone(dev, error->extra_instdone); |
| 1501 | |
Chris Wilson | 748ebc6 | 2010-10-24 10:28:47 +0100 | [diff] [blame] | 1502 | i915_gem_record_fences(dev, error); |
Chris Wilson | 52d39a2 | 2012-02-15 11:25:37 +0000 | [diff] [blame] | 1503 | i915_gem_record_rings(dev, error); |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1504 | |
Chris Wilson | c724e8a | 2010-11-22 08:07:02 +0000 | [diff] [blame] | 1505 | /* Record buffers on the active and pinned lists. */ |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1506 | error->active_bo = NULL; |
Chris Wilson | c724e8a | 2010-11-22 08:07:02 +0000 | [diff] [blame] | 1507 | error->pinned_bo = NULL; |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1508 | |
Chris Wilson | bcfb2e2 | 2011-01-07 21:06:07 +0000 | [diff] [blame] | 1509 | i = 0; |
| 1510 | list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) |
| 1511 | i++; |
| 1512 | error->active_bo_count = i; |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1513 | list_for_each_entry(obj, &dev_priv->mm.bound_list, gtt_list) |
Chris Wilson | 1b50247 | 2012-04-24 15:47:30 +0100 | [diff] [blame] | 1514 | if (obj->pin_count) |
| 1515 | i++; |
Chris Wilson | bcfb2e2 | 2011-01-07 21:06:07 +0000 | [diff] [blame] | 1516 | error->pinned_bo_count = i - error->active_bo_count; |
Chris Wilson | c724e8a | 2010-11-22 08:07:02 +0000 | [diff] [blame] | 1517 | |
Chris Wilson | 8e934db | 2011-01-24 12:34:00 +0000 | [diff] [blame] | 1518 | error->active_bo = NULL; |
| 1519 | error->pinned_bo = NULL; |
Chris Wilson | bcfb2e2 | 2011-01-07 21:06:07 +0000 | [diff] [blame] | 1520 | if (i) { |
| 1521 | error->active_bo = kmalloc(sizeof(*error->active_bo)*i, |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1522 | GFP_ATOMIC); |
Chris Wilson | c724e8a | 2010-11-22 08:07:02 +0000 | [diff] [blame] | 1523 | if (error->active_bo) |
| 1524 | error->pinned_bo = |
| 1525 | error->active_bo + error->active_bo_count; |
Jesse Barnes | 63eeaf3 | 2009-06-18 16:56:52 -0700 | [diff] [blame] | 1526 | } |
| 1527 | |
Chris Wilson | c724e8a | 2010-11-22 08:07:02 +0000 | [diff] [blame] | 1528 | if (error->active_bo) |
| 1529 | error->active_bo_count = |
Chris Wilson | 1b50247 | 2012-04-24 15:47:30 +0100 | [diff] [blame] | 1530 | capture_active_bo(error->active_bo, |
| 1531 | error->active_bo_count, |
| 1532 | &dev_priv->mm.active_list); |
Chris Wilson | c724e8a | 2010-11-22 08:07:02 +0000 | [diff] [blame] | 1533 | |
| 1534 | if (error->pinned_bo) |
| 1535 | error->pinned_bo_count = |
Chris Wilson | 1b50247 | 2012-04-24 15:47:30 +0100 | [diff] [blame] | 1536 | capture_pinned_bo(error->pinned_bo, |
| 1537 | error->pinned_bo_count, |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1538 | &dev_priv->mm.bound_list); |
Chris Wilson | c724e8a | 2010-11-22 08:07:02 +0000 | [diff] [blame] | 1539 | |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1540 | do_gettimeofday(&error->time); |
| 1541 | |
Chris Wilson | 6ef3d42 | 2010-08-04 20:26:07 +0100 | [diff] [blame] | 1542 | error->overlay = intel_overlay_capture_error_state(dev); |
Chris Wilson | c4a1d9e | 2010-11-21 13:12:35 +0000 | [diff] [blame] | 1543 | error->display = intel_display_capture_error_state(dev); |
Chris Wilson | 6ef3d42 | 2010-08-04 20:26:07 +0100 | [diff] [blame] | 1544 | |
Daniel Vetter | 99584db | 2012-11-14 17:14:04 +0100 | [diff] [blame] | 1545 | spin_lock_irqsave(&dev_priv->gpu_error.lock, flags); |
| 1546 | if (dev_priv->gpu_error.first_error == NULL) { |
| 1547 | dev_priv->gpu_error.first_error = error; |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1548 | error = NULL; |
| 1549 | } |
Daniel Vetter | 99584db | 2012-11-14 17:14:04 +0100 | [diff] [blame] | 1550 | spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags); |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1551 | |
| 1552 | if (error) |
Daniel Vetter | 742cbee | 2012-04-27 15:17:39 +0200 | [diff] [blame] | 1553 | i915_error_state_free(&error->ref); |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1554 | } |
| 1555 | |
| 1556 | void i915_destroy_error_state(struct drm_device *dev) |
| 1557 | { |
| 1558 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1559 | struct drm_i915_error_state *error; |
Ben Widawsky | 6dc0e81 | 2012-01-23 15:30:02 -0800 | [diff] [blame] | 1560 | unsigned long flags; |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1561 | |
Daniel Vetter | 99584db | 2012-11-14 17:14:04 +0100 | [diff] [blame] | 1562 | spin_lock_irqsave(&dev_priv->gpu_error.lock, flags); |
| 1563 | error = dev_priv->gpu_error.first_error; |
| 1564 | dev_priv->gpu_error.first_error = NULL; |
| 1565 | spin_unlock_irqrestore(&dev_priv->gpu_error.lock, flags); |
Chris Wilson | 9df3079 | 2010-02-18 10:24:56 +0000 | [diff] [blame] | 1566 | |
| 1567 | if (error) |
Daniel Vetter | 742cbee | 2012-04-27 15:17:39 +0200 | [diff] [blame] | 1568 | kref_put(&error->ref, i915_error_state_free); |
Jesse Barnes | 63eeaf3 | 2009-06-18 16:56:52 -0700 | [diff] [blame] | 1569 | } |
Chris Wilson | 3bd3c93 | 2010-08-19 08:19:30 +0100 | [diff] [blame] | 1570 | #else |
| 1571 | #define i915_capture_error_state(x) |
| 1572 | #endif |
Jesse Barnes | 63eeaf3 | 2009-06-18 16:56:52 -0700 | [diff] [blame] | 1573 | |
Chris Wilson | 35aed2e | 2010-05-27 13:18:12 +0100 | [diff] [blame] | 1574 | static void i915_report_and_clear_eir(struct drm_device *dev) |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1575 | { |
| 1576 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ben Widawsky | bd9854f | 2012-08-23 15:18:09 -0700 | [diff] [blame] | 1577 | uint32_t instdone[I915_NUM_INSTDONE_REG]; |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1578 | u32 eir = I915_READ(EIR); |
Ben Widawsky | 050ee91 | 2012-08-22 11:32:15 -0700 | [diff] [blame] | 1579 | int pipe, i; |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1580 | |
Chris Wilson | 35aed2e | 2010-05-27 13:18:12 +0100 | [diff] [blame] | 1581 | if (!eir) |
| 1582 | return; |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1583 | |
Joe Perches | a70491c | 2012-03-18 13:00:11 -0700 | [diff] [blame] | 1584 | pr_err("render error detected, EIR: 0x%08x\n", eir); |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1585 | |
Ben Widawsky | bd9854f | 2012-08-23 15:18:09 -0700 | [diff] [blame] | 1586 | i915_get_extra_instdone(dev, instdone); |
| 1587 | |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1588 | if (IS_G4X(dev)) { |
| 1589 | if (eir & (GM45_ERROR_MEM_PRIV | GM45_ERROR_CP_PRIV)) { |
| 1590 | u32 ipeir = I915_READ(IPEIR_I965); |
| 1591 | |
Joe Perches | a70491c | 2012-03-18 13:00:11 -0700 | [diff] [blame] | 1592 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR_I965)); |
| 1593 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR_I965)); |
Ben Widawsky | 050ee91 | 2012-08-22 11:32:15 -0700 | [diff] [blame] | 1594 | for (i = 0; i < ARRAY_SIZE(instdone); i++) |
| 1595 | pr_err(" INSTDONE_%d: 0x%08x\n", i, instdone[i]); |
Joe Perches | a70491c | 2012-03-18 13:00:11 -0700 | [diff] [blame] | 1596 | pr_err(" INSTPS: 0x%08x\n", I915_READ(INSTPS)); |
Joe Perches | a70491c | 2012-03-18 13:00:11 -0700 | [diff] [blame] | 1597 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD_I965)); |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1598 | I915_WRITE(IPEIR_I965, ipeir); |
Chris Wilson | 3143a2b | 2010-11-16 15:55:10 +0000 | [diff] [blame] | 1599 | POSTING_READ(IPEIR_I965); |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1600 | } |
| 1601 | if (eir & GM45_ERROR_PAGE_TABLE) { |
| 1602 | u32 pgtbl_err = I915_READ(PGTBL_ER); |
Joe Perches | a70491c | 2012-03-18 13:00:11 -0700 | [diff] [blame] | 1603 | pr_err("page table error\n"); |
| 1604 | pr_err(" PGTBL_ER: 0x%08x\n", pgtbl_err); |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1605 | I915_WRITE(PGTBL_ER, pgtbl_err); |
Chris Wilson | 3143a2b | 2010-11-16 15:55:10 +0000 | [diff] [blame] | 1606 | POSTING_READ(PGTBL_ER); |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1607 | } |
| 1608 | } |
| 1609 | |
Chris Wilson | a6c45cf | 2010-09-17 00:32:17 +0100 | [diff] [blame] | 1610 | if (!IS_GEN2(dev)) { |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1611 | if (eir & I915_ERROR_PAGE_TABLE) { |
| 1612 | u32 pgtbl_err = I915_READ(PGTBL_ER); |
Joe Perches | a70491c | 2012-03-18 13:00:11 -0700 | [diff] [blame] | 1613 | pr_err("page table error\n"); |
| 1614 | pr_err(" PGTBL_ER: 0x%08x\n", pgtbl_err); |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1615 | I915_WRITE(PGTBL_ER, pgtbl_err); |
Chris Wilson | 3143a2b | 2010-11-16 15:55:10 +0000 | [diff] [blame] | 1616 | POSTING_READ(PGTBL_ER); |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1617 | } |
| 1618 | } |
| 1619 | |
| 1620 | if (eir & I915_ERROR_MEMORY_REFRESH) { |
Joe Perches | a70491c | 2012-03-18 13:00:11 -0700 | [diff] [blame] | 1621 | pr_err("memory refresh error:\n"); |
Jesse Barnes | 9db4a9c | 2011-02-07 12:26:52 -0800 | [diff] [blame] | 1622 | for_each_pipe(pipe) |
Joe Perches | a70491c | 2012-03-18 13:00:11 -0700 | [diff] [blame] | 1623 | pr_err("pipe %c stat: 0x%08x\n", |
Jesse Barnes | 9db4a9c | 2011-02-07 12:26:52 -0800 | [diff] [blame] | 1624 | pipe_name(pipe), I915_READ(PIPESTAT(pipe))); |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1625 | /* pipestat has already been acked */ |
| 1626 | } |
| 1627 | if (eir & I915_ERROR_INSTRUCTION) { |
Joe Perches | a70491c | 2012-03-18 13:00:11 -0700 | [diff] [blame] | 1628 | pr_err("instruction error\n"); |
| 1629 | pr_err(" INSTPM: 0x%08x\n", I915_READ(INSTPM)); |
Ben Widawsky | 050ee91 | 2012-08-22 11:32:15 -0700 | [diff] [blame] | 1630 | for (i = 0; i < ARRAY_SIZE(instdone); i++) |
| 1631 | pr_err(" INSTDONE_%d: 0x%08x\n", i, instdone[i]); |
Chris Wilson | a6c45cf | 2010-09-17 00:32:17 +0100 | [diff] [blame] | 1632 | if (INTEL_INFO(dev)->gen < 4) { |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1633 | u32 ipeir = I915_READ(IPEIR); |
| 1634 | |
Joe Perches | a70491c | 2012-03-18 13:00:11 -0700 | [diff] [blame] | 1635 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR)); |
| 1636 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR)); |
Joe Perches | a70491c | 2012-03-18 13:00:11 -0700 | [diff] [blame] | 1637 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD)); |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1638 | I915_WRITE(IPEIR, ipeir); |
Chris Wilson | 3143a2b | 2010-11-16 15:55:10 +0000 | [diff] [blame] | 1639 | POSTING_READ(IPEIR); |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1640 | } else { |
| 1641 | u32 ipeir = I915_READ(IPEIR_I965); |
| 1642 | |
Joe Perches | a70491c | 2012-03-18 13:00:11 -0700 | [diff] [blame] | 1643 | pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR_I965)); |
| 1644 | pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR_I965)); |
Joe Perches | a70491c | 2012-03-18 13:00:11 -0700 | [diff] [blame] | 1645 | pr_err(" INSTPS: 0x%08x\n", I915_READ(INSTPS)); |
Joe Perches | a70491c | 2012-03-18 13:00:11 -0700 | [diff] [blame] | 1646 | pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD_I965)); |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1647 | I915_WRITE(IPEIR_I965, ipeir); |
Chris Wilson | 3143a2b | 2010-11-16 15:55:10 +0000 | [diff] [blame] | 1648 | POSTING_READ(IPEIR_I965); |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1649 | } |
| 1650 | } |
| 1651 | |
| 1652 | I915_WRITE(EIR, eir); |
Chris Wilson | 3143a2b | 2010-11-16 15:55:10 +0000 | [diff] [blame] | 1653 | POSTING_READ(EIR); |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1654 | eir = I915_READ(EIR); |
| 1655 | if (eir) { |
| 1656 | /* |
| 1657 | * some errors might have become stuck, |
| 1658 | * mask them. |
| 1659 | */ |
| 1660 | DRM_ERROR("EIR stuck: 0x%08x, masking\n", eir); |
| 1661 | I915_WRITE(EMR, I915_READ(EMR) | eir); |
| 1662 | I915_WRITE(IIR, I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); |
| 1663 | } |
Chris Wilson | 35aed2e | 2010-05-27 13:18:12 +0100 | [diff] [blame] | 1664 | } |
| 1665 | |
| 1666 | /** |
| 1667 | * i915_handle_error - handle an error interrupt |
| 1668 | * @dev: drm device |
| 1669 | * |
| 1670 | * Do some basic checking of regsiter state at error interrupt time and |
| 1671 | * dump it to the syslog. Also call i915_capture_error_state() to make |
| 1672 | * sure we get a record and make it available in debugfs. Fire a uevent |
| 1673 | * so userspace knows something bad happened (should trigger collection |
| 1674 | * of a ring dump etc.). |
| 1675 | */ |
Chris Wilson | 527f9e9 | 2010-11-11 01:16:58 +0000 | [diff] [blame] | 1676 | void i915_handle_error(struct drm_device *dev, bool wedged) |
Chris Wilson | 35aed2e | 2010-05-27 13:18:12 +0100 | [diff] [blame] | 1677 | { |
| 1678 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 1679 | struct intel_ring_buffer *ring; |
| 1680 | int i; |
Chris Wilson | 35aed2e | 2010-05-27 13:18:12 +0100 | [diff] [blame] | 1681 | |
| 1682 | i915_capture_error_state(dev); |
| 1683 | i915_report_and_clear_eir(dev); |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1684 | |
Ben Gamari | ba1234d | 2009-09-14 17:48:47 -0400 | [diff] [blame] | 1685 | if (wedged) { |
Daniel Vetter | f69061b | 2012-12-06 09:01:42 +0100 | [diff] [blame] | 1686 | atomic_set_mask(I915_RESET_IN_PROGRESS_FLAG, |
| 1687 | &dev_priv->gpu_error.reset_counter); |
Ben Gamari | ba1234d | 2009-09-14 17:48:47 -0400 | [diff] [blame] | 1688 | |
Ben Gamari | 11ed50e | 2009-09-14 17:48:45 -0400 | [diff] [blame] | 1689 | /* |
Daniel Vetter | 1f83fee | 2012-11-15 17:17:22 +0100 | [diff] [blame] | 1690 | * Wakeup waiting processes so that the reset work item |
| 1691 | * doesn't deadlock trying to grab various locks. |
Ben Gamari | 11ed50e | 2009-09-14 17:48:45 -0400 | [diff] [blame] | 1692 | */ |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 1693 | for_each_ring(ring, dev_priv, i) |
| 1694 | wake_up_all(&ring->irq_queue); |
Ben Gamari | 11ed50e | 2009-09-14 17:48:45 -0400 | [diff] [blame] | 1695 | } |
| 1696 | |
Daniel Vetter | 99584db | 2012-11-14 17:14:04 +0100 | [diff] [blame] | 1697 | queue_work(dev_priv->wq, &dev_priv->gpu_error.work); |
Jesse Barnes | 8a90523 | 2009-07-11 16:48:03 -0400 | [diff] [blame] | 1698 | } |
| 1699 | |
Ville Syrjälä | 21ad833 | 2013-02-19 15:16:39 +0200 | [diff] [blame] | 1700 | static void __always_unused i915_pageflip_stall_check(struct drm_device *dev, int pipe) |
Simon Farnsworth | 4e5359c | 2010-09-01 17:47:52 +0100 | [diff] [blame] | 1701 | { |
| 1702 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1703 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; |
| 1704 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1705 | struct drm_i915_gem_object *obj; |
Simon Farnsworth | 4e5359c | 2010-09-01 17:47:52 +0100 | [diff] [blame] | 1706 | struct intel_unpin_work *work; |
| 1707 | unsigned long flags; |
| 1708 | bool stall_detected; |
| 1709 | |
| 1710 | /* Ignore early vblank irqs */ |
| 1711 | if (intel_crtc == NULL) |
| 1712 | return; |
| 1713 | |
| 1714 | spin_lock_irqsave(&dev->event_lock, flags); |
| 1715 | work = intel_crtc->unpin_work; |
| 1716 | |
Chris Wilson | e7d841c | 2012-12-03 11:36:30 +0000 | [diff] [blame] | 1717 | if (work == NULL || |
| 1718 | atomic_read(&work->pending) >= INTEL_FLIP_COMPLETE || |
| 1719 | !work->enable_stall_check) { |
Simon Farnsworth | 4e5359c | 2010-09-01 17:47:52 +0100 | [diff] [blame] | 1720 | /* Either the pending flip IRQ arrived, or we're too early. Don't check */ |
| 1721 | spin_unlock_irqrestore(&dev->event_lock, flags); |
| 1722 | return; |
| 1723 | } |
| 1724 | |
| 1725 | /* Potential stall - if we see that the flip has happened, assume a missed interrupt */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1726 | obj = work->pending_flip_obj; |
Chris Wilson | a6c45cf | 2010-09-17 00:32:17 +0100 | [diff] [blame] | 1727 | if (INTEL_INFO(dev)->gen >= 4) { |
Jesse Barnes | 9db4a9c | 2011-02-07 12:26:52 -0800 | [diff] [blame] | 1728 | int dspsurf = DSPSURF(intel_crtc->plane); |
Armin Reese | 446f254 | 2012-03-30 16:20:16 -0700 | [diff] [blame] | 1729 | stall_detected = I915_HI_DISPBASE(I915_READ(dspsurf)) == |
| 1730 | obj->gtt_offset; |
Simon Farnsworth | 4e5359c | 2010-09-01 17:47:52 +0100 | [diff] [blame] | 1731 | } else { |
Jesse Barnes | 9db4a9c | 2011-02-07 12:26:52 -0800 | [diff] [blame] | 1732 | int dspaddr = DSPADDR(intel_crtc->plane); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1733 | stall_detected = I915_READ(dspaddr) == (obj->gtt_offset + |
Ville Syrjälä | 01f2c77 | 2011-12-20 00:06:49 +0200 | [diff] [blame] | 1734 | crtc->y * crtc->fb->pitches[0] + |
Simon Farnsworth | 4e5359c | 2010-09-01 17:47:52 +0100 | [diff] [blame] | 1735 | crtc->x * crtc->fb->bits_per_pixel/8); |
| 1736 | } |
| 1737 | |
| 1738 | spin_unlock_irqrestore(&dev->event_lock, flags); |
| 1739 | |
| 1740 | if (stall_detected) { |
| 1741 | DRM_DEBUG_DRIVER("Pageflip stall detected\n"); |
| 1742 | intel_prepare_page_flip(dev, intel_crtc->plane); |
| 1743 | } |
| 1744 | } |
| 1745 | |
Keith Packard | 42f52ef | 2008-10-18 19:39:29 -0700 | [diff] [blame] | 1746 | /* Called from drm generic code, passed 'crtc' which |
| 1747 | * we use as a pipe index |
| 1748 | */ |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 1749 | static int i915_enable_vblank(struct drm_device *dev, int pipe) |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 1750 | { |
| 1751 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Keith Packard | e9d21d7 | 2008-10-16 11:31:38 -0700 | [diff] [blame] | 1752 | unsigned long irqflags; |
Jesse Barnes | 71e0ffa | 2009-01-08 10:42:15 -0800 | [diff] [blame] | 1753 | |
Chris Wilson | 5eddb70 | 2010-09-11 13:48:45 +0100 | [diff] [blame] | 1754 | if (!i915_pipe_enabled(dev, pipe)) |
Jesse Barnes | 71e0ffa | 2009-01-08 10:42:15 -0800 | [diff] [blame] | 1755 | return -EINVAL; |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 1756 | |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 1757 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
Jesse Barnes | f796cf8 | 2011-04-07 13:58:17 -0700 | [diff] [blame] | 1758 | if (INTEL_INFO(dev)->gen >= 4) |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 1759 | i915_enable_pipestat(dev_priv, pipe, |
| 1760 | PIPE_START_VBLANK_INTERRUPT_ENABLE); |
Keith Packard | e9d21d7 | 2008-10-16 11:31:38 -0700 | [diff] [blame] | 1761 | else |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 1762 | i915_enable_pipestat(dev_priv, pipe, |
| 1763 | PIPE_VBLANK_INTERRUPT_ENABLE); |
Chris Wilson | 8692d00e | 2011-02-05 10:08:21 +0000 | [diff] [blame] | 1764 | |
| 1765 | /* maintain vblank delivery even in deep C-states */ |
| 1766 | if (dev_priv->info->gen == 3) |
Daniel Vetter | 6b26c86 | 2012-04-24 14:04:12 +0200 | [diff] [blame] | 1767 | I915_WRITE(INSTPM, _MASKED_BIT_DISABLE(INSTPM_AGPBUSY_DIS)); |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 1768 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
Chris Wilson | 8692d00e | 2011-02-05 10:08:21 +0000 | [diff] [blame] | 1769 | |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 1770 | return 0; |
| 1771 | } |
| 1772 | |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 1773 | static int ironlake_enable_vblank(struct drm_device *dev, int pipe) |
Jesse Barnes | f796cf8 | 2011-04-07 13:58:17 -0700 | [diff] [blame] | 1774 | { |
| 1775 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 1776 | unsigned long irqflags; |
| 1777 | |
| 1778 | if (!i915_pipe_enabled(dev, pipe)) |
| 1779 | return -EINVAL; |
| 1780 | |
| 1781 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
| 1782 | ironlake_enable_display_irq(dev_priv, (pipe == 0) ? |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 1783 | DE_PIPEA_VBLANK : DE_PIPEB_VBLANK); |
Jesse Barnes | f796cf8 | 2011-04-07 13:58:17 -0700 | [diff] [blame] | 1784 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
| 1785 | |
| 1786 | return 0; |
| 1787 | } |
| 1788 | |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 1789 | static int ivybridge_enable_vblank(struct drm_device *dev, int pipe) |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 1790 | { |
| 1791 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 1792 | unsigned long irqflags; |
| 1793 | |
| 1794 | if (!i915_pipe_enabled(dev, pipe)) |
| 1795 | return -EINVAL; |
| 1796 | |
| 1797 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
Chris Wilson | b615b57 | 2012-05-02 09:52:12 +0100 | [diff] [blame] | 1798 | ironlake_enable_display_irq(dev_priv, |
| 1799 | DE_PIPEA_VBLANK_IVB << (5 * pipe)); |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 1800 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
| 1801 | |
| 1802 | return 0; |
| 1803 | } |
| 1804 | |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 1805 | static int valleyview_enable_vblank(struct drm_device *dev, int pipe) |
| 1806 | { |
| 1807 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 1808 | unsigned long irqflags; |
Jesse Barnes | 31acc7f | 2012-06-20 10:53:11 -0700 | [diff] [blame] | 1809 | u32 imr; |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 1810 | |
| 1811 | if (!i915_pipe_enabled(dev, pipe)) |
| 1812 | return -EINVAL; |
| 1813 | |
| 1814 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 1815 | imr = I915_READ(VLV_IMR); |
Jesse Barnes | 31acc7f | 2012-06-20 10:53:11 -0700 | [diff] [blame] | 1816 | if (pipe == 0) |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 1817 | imr &= ~I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT; |
Jesse Barnes | 31acc7f | 2012-06-20 10:53:11 -0700 | [diff] [blame] | 1818 | else |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 1819 | imr &= ~I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 1820 | I915_WRITE(VLV_IMR, imr); |
Jesse Barnes | 31acc7f | 2012-06-20 10:53:11 -0700 | [diff] [blame] | 1821 | i915_enable_pipestat(dev_priv, pipe, |
| 1822 | PIPE_START_VBLANK_INTERRUPT_ENABLE); |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 1823 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
| 1824 | |
| 1825 | return 0; |
| 1826 | } |
| 1827 | |
Keith Packard | 42f52ef | 2008-10-18 19:39:29 -0700 | [diff] [blame] | 1828 | /* Called from drm generic code, passed 'crtc' which |
| 1829 | * we use as a pipe index |
| 1830 | */ |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 1831 | static void i915_disable_vblank(struct drm_device *dev, int pipe) |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 1832 | { |
| 1833 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Keith Packard | e9d21d7 | 2008-10-16 11:31:38 -0700 | [diff] [blame] | 1834 | unsigned long irqflags; |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 1835 | |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 1836 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
Chris Wilson | 8692d00e | 2011-02-05 10:08:21 +0000 | [diff] [blame] | 1837 | if (dev_priv->info->gen == 3) |
Daniel Vetter | 6b26c86 | 2012-04-24 14:04:12 +0200 | [diff] [blame] | 1838 | I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_AGPBUSY_DIS)); |
Chris Wilson | 8692d00e | 2011-02-05 10:08:21 +0000 | [diff] [blame] | 1839 | |
Jesse Barnes | f796cf8 | 2011-04-07 13:58:17 -0700 | [diff] [blame] | 1840 | i915_disable_pipestat(dev_priv, pipe, |
| 1841 | PIPE_VBLANK_INTERRUPT_ENABLE | |
| 1842 | PIPE_START_VBLANK_INTERRUPT_ENABLE); |
| 1843 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
| 1844 | } |
| 1845 | |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 1846 | static void ironlake_disable_vblank(struct drm_device *dev, int pipe) |
Jesse Barnes | f796cf8 | 2011-04-07 13:58:17 -0700 | [diff] [blame] | 1847 | { |
| 1848 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 1849 | unsigned long irqflags; |
| 1850 | |
| 1851 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
| 1852 | ironlake_disable_display_irq(dev_priv, (pipe == 0) ? |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 1853 | DE_PIPEA_VBLANK : DE_PIPEB_VBLANK); |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 1854 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 1855 | } |
| 1856 | |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 1857 | static void ivybridge_disable_vblank(struct drm_device *dev, int pipe) |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 1858 | { |
| 1859 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 1860 | unsigned long irqflags; |
| 1861 | |
| 1862 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
Chris Wilson | b615b57 | 2012-05-02 09:52:12 +0100 | [diff] [blame] | 1863 | ironlake_disable_display_irq(dev_priv, |
| 1864 | DE_PIPEA_VBLANK_IVB << (pipe * 5)); |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 1865 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
| 1866 | } |
| 1867 | |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 1868 | static void valleyview_disable_vblank(struct drm_device *dev, int pipe) |
| 1869 | { |
| 1870 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 1871 | unsigned long irqflags; |
Jesse Barnes | 31acc7f | 2012-06-20 10:53:11 -0700 | [diff] [blame] | 1872 | u32 imr; |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 1873 | |
| 1874 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
Jesse Barnes | 31acc7f | 2012-06-20 10:53:11 -0700 | [diff] [blame] | 1875 | i915_disable_pipestat(dev_priv, pipe, |
| 1876 | PIPE_START_VBLANK_INTERRUPT_ENABLE); |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 1877 | imr = I915_READ(VLV_IMR); |
Jesse Barnes | 31acc7f | 2012-06-20 10:53:11 -0700 | [diff] [blame] | 1878 | if (pipe == 0) |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 1879 | imr |= I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT; |
Jesse Barnes | 31acc7f | 2012-06-20 10:53:11 -0700 | [diff] [blame] | 1880 | else |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 1881 | imr |= I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 1882 | I915_WRITE(VLV_IMR, imr); |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 1883 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
| 1884 | } |
| 1885 | |
Chris Wilson | 893eead | 2010-10-27 14:44:35 +0100 | [diff] [blame] | 1886 | static u32 |
| 1887 | ring_last_seqno(struct intel_ring_buffer *ring) |
Zou Nan hai | 852835f | 2010-05-21 09:08:56 +0800 | [diff] [blame] | 1888 | { |
Chris Wilson | 893eead | 2010-10-27 14:44:35 +0100 | [diff] [blame] | 1889 | return list_entry(ring->request_list.prev, |
| 1890 | struct drm_i915_gem_request, list)->seqno; |
| 1891 | } |
| 1892 | |
| 1893 | static bool i915_hangcheck_ring_idle(struct intel_ring_buffer *ring, bool *err) |
| 1894 | { |
| 1895 | if (list_empty(&ring->request_list) || |
Chris Wilson | b2eadbc | 2012-08-09 10:58:30 +0100 | [diff] [blame] | 1896 | i915_seqno_passed(ring->get_seqno(ring, false), |
| 1897 | ring_last_seqno(ring))) { |
Chris Wilson | 893eead | 2010-10-27 14:44:35 +0100 | [diff] [blame] | 1898 | /* Issue a wake-up to catch stuck h/w. */ |
Ben Widawsky | 9574b3f | 2012-04-26 16:03:01 -0700 | [diff] [blame] | 1899 | if (waitqueue_active(&ring->irq_queue)) { |
| 1900 | DRM_ERROR("Hangcheck timer elapsed... %s idle\n", |
| 1901 | ring->name); |
Chris Wilson | 893eead | 2010-10-27 14:44:35 +0100 | [diff] [blame] | 1902 | wake_up_all(&ring->irq_queue); |
| 1903 | *err = true; |
| 1904 | } |
| 1905 | return true; |
| 1906 | } |
| 1907 | return false; |
Ben Gamari | f65d942 | 2009-09-14 17:48:44 -0400 | [diff] [blame] | 1908 | } |
| 1909 | |
Chris Wilson | a24a11e | 2013-03-14 17:52:05 +0200 | [diff] [blame] | 1910 | static bool semaphore_passed(struct intel_ring_buffer *ring) |
| 1911 | { |
| 1912 | struct drm_i915_private *dev_priv = ring->dev->dev_private; |
| 1913 | u32 acthd = intel_ring_get_active_head(ring) & HEAD_ADDR; |
| 1914 | struct intel_ring_buffer *signaller; |
| 1915 | u32 cmd, ipehr, acthd_min; |
| 1916 | |
| 1917 | ipehr = I915_READ(RING_IPEHR(ring->mmio_base)); |
| 1918 | if ((ipehr & ~(0x3 << 16)) != |
| 1919 | (MI_SEMAPHORE_MBOX | MI_SEMAPHORE_COMPARE | MI_SEMAPHORE_REGISTER)) |
| 1920 | return false; |
| 1921 | |
| 1922 | /* ACTHD is likely pointing to the dword after the actual command, |
| 1923 | * so scan backwards until we find the MBOX. |
| 1924 | */ |
| 1925 | acthd_min = max((int)acthd - 3 * 4, 0); |
| 1926 | do { |
| 1927 | cmd = ioread32(ring->virtual_start + acthd); |
| 1928 | if (cmd == ipehr) |
| 1929 | break; |
| 1930 | |
| 1931 | acthd -= 4; |
| 1932 | if (acthd < acthd_min) |
| 1933 | return false; |
| 1934 | } while (1); |
| 1935 | |
| 1936 | signaller = &dev_priv->ring[(ring->id + (((ipehr >> 17) & 1) + 1)) % 3]; |
| 1937 | return i915_seqno_passed(signaller->get_seqno(signaller, false), |
| 1938 | ioread32(ring->virtual_start+acthd+4)+1); |
| 1939 | } |
| 1940 | |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 1941 | static bool kick_ring(struct intel_ring_buffer *ring) |
| 1942 | { |
| 1943 | struct drm_device *dev = ring->dev; |
| 1944 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1945 | u32 tmp = I915_READ_CTL(ring); |
| 1946 | if (tmp & RING_WAIT) { |
| 1947 | DRM_ERROR("Kicking stuck wait on %s\n", |
| 1948 | ring->name); |
| 1949 | I915_WRITE_CTL(ring, tmp); |
| 1950 | return true; |
| 1951 | } |
Chris Wilson | a24a11e | 2013-03-14 17:52:05 +0200 | [diff] [blame] | 1952 | |
| 1953 | if (INTEL_INFO(dev)->gen >= 6 && |
| 1954 | tmp & RING_WAIT_SEMAPHORE && |
| 1955 | semaphore_passed(ring)) { |
| 1956 | DRM_ERROR("Kicking stuck semaphore on %s\n", |
| 1957 | ring->name); |
| 1958 | I915_WRITE_CTL(ring, tmp); |
| 1959 | return true; |
| 1960 | } |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 1961 | return false; |
| 1962 | } |
| 1963 | |
Chris Wilson | d1e61e7 | 2012-04-10 17:00:41 +0100 | [diff] [blame] | 1964 | static bool i915_hangcheck_hung(struct drm_device *dev) |
| 1965 | { |
| 1966 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 1967 | |
Daniel Vetter | 99584db | 2012-11-14 17:14:04 +0100 | [diff] [blame] | 1968 | if (dev_priv->gpu_error.hangcheck_count++ > 1) { |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 1969 | bool hung = true; |
| 1970 | |
Chris Wilson | d1e61e7 | 2012-04-10 17:00:41 +0100 | [diff] [blame] | 1971 | DRM_ERROR("Hangcheck timer elapsed... GPU hung\n"); |
| 1972 | i915_handle_error(dev, true); |
| 1973 | |
| 1974 | if (!IS_GEN2(dev)) { |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 1975 | struct intel_ring_buffer *ring; |
| 1976 | int i; |
| 1977 | |
Chris Wilson | d1e61e7 | 2012-04-10 17:00:41 +0100 | [diff] [blame] | 1978 | /* Is the chip hanging on a WAIT_FOR_EVENT? |
| 1979 | * If so we can simply poke the RB_WAIT bit |
| 1980 | * and break the hang. This should work on |
| 1981 | * all but the second generation chipsets. |
| 1982 | */ |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 1983 | for_each_ring(ring, dev_priv, i) |
| 1984 | hung &= !kick_ring(ring); |
Chris Wilson | d1e61e7 | 2012-04-10 17:00:41 +0100 | [diff] [blame] | 1985 | } |
| 1986 | |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 1987 | return hung; |
Chris Wilson | d1e61e7 | 2012-04-10 17:00:41 +0100 | [diff] [blame] | 1988 | } |
| 1989 | |
| 1990 | return false; |
| 1991 | } |
| 1992 | |
Ben Gamari | f65d942 | 2009-09-14 17:48:44 -0400 | [diff] [blame] | 1993 | /** |
| 1994 | * This is called when the chip hasn't reported back with completed |
| 1995 | * batchbuffers in a long time. The first time this is called we simply record |
| 1996 | * ACTHD. If ACTHD hasn't changed by the time the hangcheck timer elapses |
| 1997 | * again, we assume the chip is wedged and try to fix it. |
| 1998 | */ |
| 1999 | void i915_hangcheck_elapsed(unsigned long data) |
| 2000 | { |
| 2001 | struct drm_device *dev = (struct drm_device *)data; |
| 2002 | drm_i915_private_t *dev_priv = dev->dev_private; |
Ben Widawsky | bd9854f | 2012-08-23 15:18:09 -0700 | [diff] [blame] | 2003 | uint32_t acthd[I915_NUM_RINGS], instdone[I915_NUM_INSTDONE_REG]; |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 2004 | struct intel_ring_buffer *ring; |
| 2005 | bool err = false, idle; |
| 2006 | int i; |
Chris Wilson | 893eead | 2010-10-27 14:44:35 +0100 | [diff] [blame] | 2007 | |
Ben Widawsky | 3e0dc6b | 2011-06-29 10:26:42 -0700 | [diff] [blame] | 2008 | if (!i915_enable_hangcheck) |
| 2009 | return; |
| 2010 | |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 2011 | memset(acthd, 0, sizeof(acthd)); |
| 2012 | idle = true; |
| 2013 | for_each_ring(ring, dev_priv, i) { |
| 2014 | idle &= i915_hangcheck_ring_idle(ring, &err); |
| 2015 | acthd[i] = intel_ring_get_active_head(ring); |
| 2016 | } |
| 2017 | |
Chris Wilson | 893eead | 2010-10-27 14:44:35 +0100 | [diff] [blame] | 2018 | /* If all work is done then ACTHD clearly hasn't advanced. */ |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 2019 | if (idle) { |
Chris Wilson | d1e61e7 | 2012-04-10 17:00:41 +0100 | [diff] [blame] | 2020 | if (err) { |
| 2021 | if (i915_hangcheck_hung(dev)) |
| 2022 | return; |
| 2023 | |
Chris Wilson | 893eead | 2010-10-27 14:44:35 +0100 | [diff] [blame] | 2024 | goto repeat; |
Chris Wilson | d1e61e7 | 2012-04-10 17:00:41 +0100 | [diff] [blame] | 2025 | } |
| 2026 | |
Daniel Vetter | 99584db | 2012-11-14 17:14:04 +0100 | [diff] [blame] | 2027 | dev_priv->gpu_error.hangcheck_count = 0; |
Chris Wilson | 893eead | 2010-10-27 14:44:35 +0100 | [diff] [blame] | 2028 | return; |
| 2029 | } |
Eric Anholt | b9201c1 | 2010-01-08 14:25:16 -0800 | [diff] [blame] | 2030 | |
Ben Widawsky | bd9854f | 2012-08-23 15:18:09 -0700 | [diff] [blame] | 2031 | i915_get_extra_instdone(dev, instdone); |
Daniel Vetter | 99584db | 2012-11-14 17:14:04 +0100 | [diff] [blame] | 2032 | if (memcmp(dev_priv->gpu_error.last_acthd, acthd, |
| 2033 | sizeof(acthd)) == 0 && |
| 2034 | memcmp(dev_priv->gpu_error.prev_instdone, instdone, |
| 2035 | sizeof(instdone)) == 0) { |
Chris Wilson | d1e61e7 | 2012-04-10 17:00:41 +0100 | [diff] [blame] | 2036 | if (i915_hangcheck_hung(dev)) |
Chris Wilson | cbb465e | 2010-06-06 12:16:24 +0100 | [diff] [blame] | 2037 | return; |
Chris Wilson | cbb465e | 2010-06-06 12:16:24 +0100 | [diff] [blame] | 2038 | } else { |
Daniel Vetter | 99584db | 2012-11-14 17:14:04 +0100 | [diff] [blame] | 2039 | dev_priv->gpu_error.hangcheck_count = 0; |
Chris Wilson | cbb465e | 2010-06-06 12:16:24 +0100 | [diff] [blame] | 2040 | |
Daniel Vetter | 99584db | 2012-11-14 17:14:04 +0100 | [diff] [blame] | 2041 | memcpy(dev_priv->gpu_error.last_acthd, acthd, |
| 2042 | sizeof(acthd)); |
| 2043 | memcpy(dev_priv->gpu_error.prev_instdone, instdone, |
| 2044 | sizeof(instdone)); |
Chris Wilson | cbb465e | 2010-06-06 12:16:24 +0100 | [diff] [blame] | 2045 | } |
Ben Gamari | f65d942 | 2009-09-14 17:48:44 -0400 | [diff] [blame] | 2046 | |
Chris Wilson | 893eead | 2010-10-27 14:44:35 +0100 | [diff] [blame] | 2047 | repeat: |
Ben Gamari | f65d942 | 2009-09-14 17:48:44 -0400 | [diff] [blame] | 2048 | /* Reset timer case chip hangs without another request being added */ |
Daniel Vetter | 99584db | 2012-11-14 17:14:04 +0100 | [diff] [blame] | 2049 | mod_timer(&dev_priv->gpu_error.hangcheck_timer, |
Chris Wilson | cecc21f | 2012-10-05 17:02:56 +0100 | [diff] [blame] | 2050 | round_jiffies_up(jiffies + DRM_I915_HANGCHECK_JIFFIES)); |
Ben Gamari | f65d942 | 2009-09-14 17:48:44 -0400 | [diff] [blame] | 2051 | } |
| 2052 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2053 | /* drm_dma.h hooks |
| 2054 | */ |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 2055 | static void ironlake_irq_preinstall(struct drm_device *dev) |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 2056 | { |
| 2057 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 2058 | |
Jesse Barnes | 4697995 | 2011-04-07 13:53:55 -0700 | [diff] [blame] | 2059 | atomic_set(&dev_priv->irq_received, 0); |
| 2060 | |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 2061 | I915_WRITE(HWSTAM, 0xeffe); |
Daniel Vetter | bdfcdb6 | 2012-01-05 01:05:26 +0100 | [diff] [blame] | 2062 | |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 2063 | /* XXX hotplug from PCH */ |
| 2064 | |
| 2065 | I915_WRITE(DEIMR, 0xffffffff); |
| 2066 | I915_WRITE(DEIER, 0x0); |
Chris Wilson | 3143a2b | 2010-11-16 15:55:10 +0000 | [diff] [blame] | 2067 | POSTING_READ(DEIER); |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 2068 | |
| 2069 | /* and GT */ |
| 2070 | I915_WRITE(GTIMR, 0xffffffff); |
| 2071 | I915_WRITE(GTIER, 0x0); |
Chris Wilson | 3143a2b | 2010-11-16 15:55:10 +0000 | [diff] [blame] | 2072 | POSTING_READ(GTIER); |
Zhenyu Wang | c650156 | 2009-11-03 18:57:21 +0000 | [diff] [blame] | 2073 | |
Ben Widawsky | ab5c608 | 2013-04-05 13:12:41 -0700 | [diff] [blame] | 2074 | if (HAS_PCH_NOP(dev)) |
| 2075 | return; |
| 2076 | |
Zhenyu Wang | c650156 | 2009-11-03 18:57:21 +0000 | [diff] [blame] | 2077 | /* south display irq */ |
| 2078 | I915_WRITE(SDEIMR, 0xffffffff); |
Daniel Vetter | 82a28bc | 2013-03-27 15:55:01 +0100 | [diff] [blame] | 2079 | /* |
| 2080 | * SDEIER is also touched by the interrupt handler to work around missed |
| 2081 | * PCH interrupts. Hence we can't update it after the interrupt handler |
| 2082 | * is enabled - instead we unconditionally enable all PCH interrupt |
| 2083 | * sources here, but then only unmask them as needed with SDEIMR. |
| 2084 | */ |
| 2085 | I915_WRITE(SDEIER, 0xffffffff); |
Chris Wilson | 3143a2b | 2010-11-16 15:55:10 +0000 | [diff] [blame] | 2086 | POSTING_READ(SDEIER); |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 2087 | } |
| 2088 | |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 2089 | static void valleyview_irq_preinstall(struct drm_device *dev) |
| 2090 | { |
| 2091 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 2092 | int pipe; |
| 2093 | |
| 2094 | atomic_set(&dev_priv->irq_received, 0); |
| 2095 | |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 2096 | /* VLV magic */ |
| 2097 | I915_WRITE(VLV_IMR, 0); |
| 2098 | I915_WRITE(RING_IMR(RENDER_RING_BASE), 0); |
| 2099 | I915_WRITE(RING_IMR(GEN6_BSD_RING_BASE), 0); |
| 2100 | I915_WRITE(RING_IMR(BLT_RING_BASE), 0); |
| 2101 | |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 2102 | /* and GT */ |
| 2103 | I915_WRITE(GTIIR, I915_READ(GTIIR)); |
| 2104 | I915_WRITE(GTIIR, I915_READ(GTIIR)); |
| 2105 | I915_WRITE(GTIMR, 0xffffffff); |
| 2106 | I915_WRITE(GTIER, 0x0); |
| 2107 | POSTING_READ(GTIER); |
| 2108 | |
| 2109 | I915_WRITE(DPINVGTT, 0xff); |
| 2110 | |
| 2111 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
| 2112 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); |
| 2113 | for_each_pipe(pipe) |
| 2114 | I915_WRITE(PIPESTAT(pipe), 0xffff); |
| 2115 | I915_WRITE(VLV_IIR, 0xffffffff); |
| 2116 | I915_WRITE(VLV_IMR, 0xffffffff); |
| 2117 | I915_WRITE(VLV_IER, 0x0); |
| 2118 | POSTING_READ(VLV_IER); |
| 2119 | } |
| 2120 | |
Daniel Vetter | 82a28bc | 2013-03-27 15:55:01 +0100 | [diff] [blame] | 2121 | static void ibx_hpd_irq_setup(struct drm_device *dev) |
Keith Packard | 7fe0b97 | 2011-09-19 13:31:02 -0700 | [diff] [blame] | 2122 | { |
| 2123 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Daniel Vetter | 82a28bc | 2013-03-27 15:55:01 +0100 | [diff] [blame] | 2124 | struct drm_mode_config *mode_config = &dev->mode_config; |
| 2125 | struct intel_encoder *intel_encoder; |
| 2126 | u32 mask = ~I915_READ(SDEIMR); |
| 2127 | u32 hotplug; |
Keith Packard | 7fe0b97 | 2011-09-19 13:31:02 -0700 | [diff] [blame] | 2128 | |
Daniel Vetter | 82a28bc | 2013-03-27 15:55:01 +0100 | [diff] [blame] | 2129 | if (HAS_PCH_IBX(dev)) { |
| 2130 | list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head) |
| 2131 | mask |= hpd_ibx[intel_encoder->hpd_pin]; |
| 2132 | } else { |
| 2133 | list_for_each_entry(intel_encoder, &mode_config->encoder_list, base.head) |
| 2134 | mask |= hpd_cpt[intel_encoder->hpd_pin]; |
| 2135 | } |
| 2136 | |
| 2137 | I915_WRITE(SDEIMR, ~mask); |
| 2138 | |
| 2139 | /* |
| 2140 | * Enable digital hotplug on the PCH, and configure the DP short pulse |
| 2141 | * duration to 2ms (which is the minimum in the Display Port spec) |
| 2142 | * |
| 2143 | * This register is the same on all known PCH chips. |
| 2144 | */ |
Keith Packard | 7fe0b97 | 2011-09-19 13:31:02 -0700 | [diff] [blame] | 2145 | hotplug = I915_READ(PCH_PORT_HOTPLUG); |
| 2146 | hotplug &= ~(PORTD_PULSE_DURATION_MASK|PORTC_PULSE_DURATION_MASK|PORTB_PULSE_DURATION_MASK); |
| 2147 | hotplug |= PORTD_HOTPLUG_ENABLE | PORTD_PULSE_DURATION_2ms; |
| 2148 | hotplug |= PORTC_HOTPLUG_ENABLE | PORTC_PULSE_DURATION_2ms; |
| 2149 | hotplug |= PORTB_HOTPLUG_ENABLE | PORTB_PULSE_DURATION_2ms; |
| 2150 | I915_WRITE(PCH_PORT_HOTPLUG, hotplug); |
| 2151 | } |
| 2152 | |
Paulo Zanoni | d46da43 | 2013-02-08 17:35:15 -0200 | [diff] [blame] | 2153 | static void ibx_irq_postinstall(struct drm_device *dev) |
| 2154 | { |
| 2155 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Daniel Vetter | 82a28bc | 2013-03-27 15:55:01 +0100 | [diff] [blame] | 2156 | u32 mask; |
Paulo Zanoni | d46da43 | 2013-02-08 17:35:15 -0200 | [diff] [blame] | 2157 | |
Daniel Vetter | 82a28bc | 2013-03-27 15:55:01 +0100 | [diff] [blame] | 2158 | if (HAS_PCH_IBX(dev)) |
| 2159 | mask = SDE_GMBUS | SDE_AUX_MASK; |
| 2160 | else |
| 2161 | mask = SDE_GMBUS_CPT | SDE_AUX_MASK_CPT; |
Ben Widawsky | ab5c608 | 2013-04-05 13:12:41 -0700 | [diff] [blame] | 2162 | |
| 2163 | if (HAS_PCH_NOP(dev)) |
| 2164 | return; |
| 2165 | |
Paulo Zanoni | d46da43 | 2013-02-08 17:35:15 -0200 | [diff] [blame] | 2166 | I915_WRITE(SDEIIR, I915_READ(SDEIIR)); |
| 2167 | I915_WRITE(SDEIMR, ~mask); |
Paulo Zanoni | d46da43 | 2013-02-08 17:35:15 -0200 | [diff] [blame] | 2168 | } |
| 2169 | |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 2170 | static int ironlake_irq_postinstall(struct drm_device *dev) |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 2171 | { |
| 2172 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 2173 | /* enable kind of interrupts always enabled */ |
Jesse Barnes | 013d5aa | 2010-01-29 11:18:31 -0800 | [diff] [blame] | 2174 | u32 display_mask = DE_MASTER_IRQ_CONTROL | DE_GSE | DE_PCH_EVENT | |
Daniel Vetter | ce99c25 | 2012-12-01 13:53:47 +0100 | [diff] [blame] | 2175 | DE_PLANEA_FLIP_DONE | DE_PLANEB_FLIP_DONE | |
| 2176 | DE_AUX_CHANNEL_A; |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2177 | u32 render_irqs; |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 2178 | |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2179 | dev_priv->irq_mask = ~display_mask; |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 2180 | |
| 2181 | /* should always can generate irq */ |
| 2182 | I915_WRITE(DEIIR, I915_READ(DEIIR)); |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2183 | I915_WRITE(DEIMR, dev_priv->irq_mask); |
| 2184 | I915_WRITE(DEIER, display_mask | DE_PIPEA_VBLANK | DE_PIPEB_VBLANK); |
Chris Wilson | 3143a2b | 2010-11-16 15:55:10 +0000 | [diff] [blame] | 2185 | POSTING_READ(DEIER); |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 2186 | |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2187 | dev_priv->gt_irq_mask = ~0; |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 2188 | |
| 2189 | I915_WRITE(GTIIR, I915_READ(GTIIR)); |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2190 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); |
Xiang, Haihao | 881f47b | 2010-09-19 14:40:43 +0100 | [diff] [blame] | 2191 | |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2192 | if (IS_GEN6(dev)) |
| 2193 | render_irqs = |
| 2194 | GT_USER_INTERRUPT | |
Ben Widawsky | e2a1e2f | 2012-03-29 19:11:26 -0700 | [diff] [blame] | 2195 | GEN6_BSD_USER_INTERRUPT | |
| 2196 | GEN6_BLITTER_USER_INTERRUPT; |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2197 | else |
| 2198 | render_irqs = |
Chris Wilson | 88f23b8 | 2010-12-05 15:08:31 +0000 | [diff] [blame] | 2199 | GT_USER_INTERRUPT | |
Chris Wilson | c6df541 | 2010-12-15 09:56:50 +0000 | [diff] [blame] | 2200 | GT_PIPE_NOTIFY | |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2201 | GT_BSD_USER_INTERRUPT; |
| 2202 | I915_WRITE(GTIER, render_irqs); |
Chris Wilson | 3143a2b | 2010-11-16 15:55:10 +0000 | [diff] [blame] | 2203 | POSTING_READ(GTIER); |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 2204 | |
Paulo Zanoni | d46da43 | 2013-02-08 17:35:15 -0200 | [diff] [blame] | 2205 | ibx_irq_postinstall(dev); |
Keith Packard | 7fe0b97 | 2011-09-19 13:31:02 -0700 | [diff] [blame] | 2206 | |
Jesse Barnes | f97108d | 2010-01-29 11:27:07 -0800 | [diff] [blame] | 2207 | if (IS_IRONLAKE_M(dev)) { |
| 2208 | /* Clear & enable PCU event interrupts */ |
| 2209 | I915_WRITE(DEIIR, DE_PCU_EVENT); |
| 2210 | I915_WRITE(DEIER, I915_READ(DEIER) | DE_PCU_EVENT); |
| 2211 | ironlake_enable_display_irq(dev_priv, DE_PCU_EVENT); |
| 2212 | } |
| 2213 | |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 2214 | return 0; |
| 2215 | } |
| 2216 | |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 2217 | static int ivybridge_irq_postinstall(struct drm_device *dev) |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 2218 | { |
| 2219 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 2220 | /* enable kind of interrupts always enabled */ |
Chris Wilson | b615b57 | 2012-05-02 09:52:12 +0100 | [diff] [blame] | 2221 | u32 display_mask = |
| 2222 | DE_MASTER_IRQ_CONTROL | DE_GSE_IVB | DE_PCH_EVENT_IVB | |
| 2223 | DE_PLANEC_FLIP_DONE_IVB | |
| 2224 | DE_PLANEB_FLIP_DONE_IVB | |
Daniel Vetter | ce99c25 | 2012-12-01 13:53:47 +0100 | [diff] [blame] | 2225 | DE_PLANEA_FLIP_DONE_IVB | |
| 2226 | DE_AUX_CHANNEL_A_IVB; |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 2227 | u32 render_irqs; |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 2228 | |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 2229 | dev_priv->irq_mask = ~display_mask; |
| 2230 | |
| 2231 | /* should always can generate irq */ |
| 2232 | I915_WRITE(DEIIR, I915_READ(DEIIR)); |
| 2233 | I915_WRITE(DEIMR, dev_priv->irq_mask); |
Chris Wilson | b615b57 | 2012-05-02 09:52:12 +0100 | [diff] [blame] | 2234 | I915_WRITE(DEIER, |
| 2235 | display_mask | |
| 2236 | DE_PIPEC_VBLANK_IVB | |
| 2237 | DE_PIPEB_VBLANK_IVB | |
| 2238 | DE_PIPEA_VBLANK_IVB); |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 2239 | POSTING_READ(DEIER); |
| 2240 | |
Ben Widawsky | 15b9f80 | 2012-05-25 16:56:23 -0700 | [diff] [blame] | 2241 | dev_priv->gt_irq_mask = ~GT_GEN7_L3_PARITY_ERROR_INTERRUPT; |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 2242 | |
| 2243 | I915_WRITE(GTIIR, I915_READ(GTIIR)); |
| 2244 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); |
| 2245 | |
Ben Widawsky | e2a1e2f | 2012-03-29 19:11:26 -0700 | [diff] [blame] | 2246 | render_irqs = GT_USER_INTERRUPT | GEN6_BSD_USER_INTERRUPT | |
Ben Widawsky | 15b9f80 | 2012-05-25 16:56:23 -0700 | [diff] [blame] | 2247 | GEN6_BLITTER_USER_INTERRUPT | GT_GEN7_L3_PARITY_ERROR_INTERRUPT; |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 2248 | I915_WRITE(GTIER, render_irqs); |
| 2249 | POSTING_READ(GTIER); |
| 2250 | |
Paulo Zanoni | d46da43 | 2013-02-08 17:35:15 -0200 | [diff] [blame] | 2251 | ibx_irq_postinstall(dev); |
Keith Packard | 7fe0b97 | 2011-09-19 13:31:02 -0700 | [diff] [blame] | 2252 | |
Jesse Barnes | b1f14ad | 2011-04-06 12:13:38 -0700 | [diff] [blame] | 2253 | return 0; |
| 2254 | } |
| 2255 | |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 2256 | static int valleyview_irq_postinstall(struct drm_device *dev) |
| 2257 | { |
| 2258 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 2259 | u32 enable_mask; |
Jesse Barnes | 31acc7f | 2012-06-20 10:53:11 -0700 | [diff] [blame] | 2260 | u32 pipestat_enable = PLANE_FLIP_DONE_INT_EN_VLV; |
Jesse Barnes | 3bcedbe | 2012-09-19 13:29:01 -0700 | [diff] [blame] | 2261 | u32 render_irqs; |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 2262 | u16 msid; |
| 2263 | |
| 2264 | enable_mask = I915_DISPLAY_PORT_INTERRUPT; |
Jesse Barnes | 31acc7f | 2012-06-20 10:53:11 -0700 | [diff] [blame] | 2265 | enable_mask |= I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | |
| 2266 | I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT | |
| 2267 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 2268 | I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; |
| 2269 | |
Jesse Barnes | 31acc7f | 2012-06-20 10:53:11 -0700 | [diff] [blame] | 2270 | /* |
| 2271 | *Leave vblank interrupts masked initially. enable/disable will |
| 2272 | * toggle them based on usage. |
| 2273 | */ |
| 2274 | dev_priv->irq_mask = (~enable_mask) | |
| 2275 | I915_DISPLAY_PIPE_A_VBLANK_INTERRUPT | |
| 2276 | I915_DISPLAY_PIPE_B_VBLANK_INTERRUPT; |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 2277 | |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 2278 | /* Hack for broken MSIs on VLV */ |
| 2279 | pci_write_config_dword(dev_priv->dev->pdev, 0x94, 0xfee00000); |
| 2280 | pci_read_config_word(dev->pdev, 0x98, &msid); |
| 2281 | msid &= 0xff; /* mask out delivery bits */ |
| 2282 | msid |= (1<<14); |
| 2283 | pci_write_config_word(dev_priv->dev->pdev, 0x98, msid); |
| 2284 | |
Daniel Vetter | 20afbda | 2012-12-11 14:05:07 +0100 | [diff] [blame] | 2285 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
| 2286 | POSTING_READ(PORT_HOTPLUG_EN); |
| 2287 | |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 2288 | I915_WRITE(VLV_IMR, dev_priv->irq_mask); |
| 2289 | I915_WRITE(VLV_IER, enable_mask); |
| 2290 | I915_WRITE(VLV_IIR, 0xffffffff); |
| 2291 | I915_WRITE(PIPESTAT(0), 0xffff); |
| 2292 | I915_WRITE(PIPESTAT(1), 0xffff); |
| 2293 | POSTING_READ(VLV_IER); |
| 2294 | |
Jesse Barnes | 31acc7f | 2012-06-20 10:53:11 -0700 | [diff] [blame] | 2295 | i915_enable_pipestat(dev_priv, 0, pipestat_enable); |
Daniel Vetter | 515ac2b | 2012-12-01 13:53:44 +0100 | [diff] [blame] | 2296 | i915_enable_pipestat(dev_priv, 0, PIPE_GMBUS_EVENT_ENABLE); |
Jesse Barnes | 31acc7f | 2012-06-20 10:53:11 -0700 | [diff] [blame] | 2297 | i915_enable_pipestat(dev_priv, 1, pipestat_enable); |
| 2298 | |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 2299 | I915_WRITE(VLV_IIR, 0xffffffff); |
| 2300 | I915_WRITE(VLV_IIR, 0xffffffff); |
| 2301 | |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 2302 | I915_WRITE(GTIIR, I915_READ(GTIIR)); |
Jesse Barnes | 31acc7f | 2012-06-20 10:53:11 -0700 | [diff] [blame] | 2303 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); |
Jesse Barnes | 3bcedbe | 2012-09-19 13:29:01 -0700 | [diff] [blame] | 2304 | |
| 2305 | render_irqs = GT_USER_INTERRUPT | GEN6_BSD_USER_INTERRUPT | |
| 2306 | GEN6_BLITTER_USER_INTERRUPT; |
| 2307 | I915_WRITE(GTIER, render_irqs); |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 2308 | POSTING_READ(GTIER); |
| 2309 | |
| 2310 | /* ack & enable invalid PTE error interrupts */ |
| 2311 | #if 0 /* FIXME: add support to irq handler for checking these bits */ |
| 2312 | I915_WRITE(DPINVGTT, DPINVGTT_STATUS_MASK); |
| 2313 | I915_WRITE(DPINVGTT, DPINVGTT_EN_MASK); |
| 2314 | #endif |
| 2315 | |
| 2316 | I915_WRITE(VLV_MASTER_IER, MASTER_INTERRUPT_ENABLE); |
Daniel Vetter | 20afbda | 2012-12-11 14:05:07 +0100 | [diff] [blame] | 2317 | |
| 2318 | return 0; |
| 2319 | } |
| 2320 | |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 2321 | static void valleyview_irq_uninstall(struct drm_device *dev) |
| 2322 | { |
| 2323 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 2324 | int pipe; |
| 2325 | |
| 2326 | if (!dev_priv) |
| 2327 | return; |
| 2328 | |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 2329 | for_each_pipe(pipe) |
| 2330 | I915_WRITE(PIPESTAT(pipe), 0xffff); |
| 2331 | |
| 2332 | I915_WRITE(HWSTAM, 0xffffffff); |
| 2333 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
| 2334 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); |
| 2335 | for_each_pipe(pipe) |
| 2336 | I915_WRITE(PIPESTAT(pipe), 0xffff); |
| 2337 | I915_WRITE(VLV_IIR, 0xffffffff); |
| 2338 | I915_WRITE(VLV_IMR, 0xffffffff); |
| 2339 | I915_WRITE(VLV_IER, 0x0); |
| 2340 | POSTING_READ(VLV_IER); |
| 2341 | } |
| 2342 | |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 2343 | static void ironlake_irq_uninstall(struct drm_device *dev) |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 2344 | { |
| 2345 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Jesse Barnes | 4697995 | 2011-04-07 13:53:55 -0700 | [diff] [blame] | 2346 | |
| 2347 | if (!dev_priv) |
| 2348 | return; |
| 2349 | |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 2350 | I915_WRITE(HWSTAM, 0xffffffff); |
| 2351 | |
| 2352 | I915_WRITE(DEIMR, 0xffffffff); |
| 2353 | I915_WRITE(DEIER, 0x0); |
| 2354 | I915_WRITE(DEIIR, I915_READ(DEIIR)); |
| 2355 | |
| 2356 | I915_WRITE(GTIMR, 0xffffffff); |
| 2357 | I915_WRITE(GTIER, 0x0); |
| 2358 | I915_WRITE(GTIIR, I915_READ(GTIIR)); |
Keith Packard | 192aac1f | 2011-09-20 10:12:44 -0700 | [diff] [blame] | 2359 | |
Ben Widawsky | ab5c608 | 2013-04-05 13:12:41 -0700 | [diff] [blame] | 2360 | if (HAS_PCH_NOP(dev)) |
| 2361 | return; |
| 2362 | |
Keith Packard | 192aac1f | 2011-09-20 10:12:44 -0700 | [diff] [blame] | 2363 | I915_WRITE(SDEIMR, 0xffffffff); |
| 2364 | I915_WRITE(SDEIER, 0x0); |
| 2365 | I915_WRITE(SDEIIR, I915_READ(SDEIIR)); |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 2366 | } |
| 2367 | |
Chris Wilson | c2798b1 | 2012-04-22 21:13:57 +0100 | [diff] [blame] | 2368 | static void i8xx_irq_preinstall(struct drm_device * dev) |
| 2369 | { |
| 2370 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 2371 | int pipe; |
| 2372 | |
| 2373 | atomic_set(&dev_priv->irq_received, 0); |
| 2374 | |
| 2375 | for_each_pipe(pipe) |
| 2376 | I915_WRITE(PIPESTAT(pipe), 0); |
| 2377 | I915_WRITE16(IMR, 0xffff); |
| 2378 | I915_WRITE16(IER, 0x0); |
| 2379 | POSTING_READ16(IER); |
| 2380 | } |
| 2381 | |
| 2382 | static int i8xx_irq_postinstall(struct drm_device *dev) |
| 2383 | { |
| 2384 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 2385 | |
Chris Wilson | c2798b1 | 2012-04-22 21:13:57 +0100 | [diff] [blame] | 2386 | I915_WRITE16(EMR, |
| 2387 | ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH)); |
| 2388 | |
| 2389 | /* Unmask the interrupts that we always want on. */ |
| 2390 | dev_priv->irq_mask = |
| 2391 | ~(I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | |
| 2392 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | |
| 2393 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | |
| 2394 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | |
| 2395 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); |
| 2396 | I915_WRITE16(IMR, dev_priv->irq_mask); |
| 2397 | |
| 2398 | I915_WRITE16(IER, |
| 2399 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | |
| 2400 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | |
| 2401 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT | |
| 2402 | I915_USER_INTERRUPT); |
| 2403 | POSTING_READ16(IER); |
| 2404 | |
| 2405 | return 0; |
| 2406 | } |
| 2407 | |
Ville Syrjälä | 90a72f8 | 2013-02-19 23:16:44 +0200 | [diff] [blame] | 2408 | /* |
| 2409 | * Returns true when a page flip has completed. |
| 2410 | */ |
| 2411 | static bool i8xx_handle_vblank(struct drm_device *dev, |
| 2412 | int pipe, u16 iir) |
| 2413 | { |
| 2414 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2415 | u16 flip_pending = DISPLAY_PLANE_FLIP_PENDING(pipe); |
| 2416 | |
| 2417 | if (!drm_handle_vblank(dev, pipe)) |
| 2418 | return false; |
| 2419 | |
| 2420 | if ((iir & flip_pending) == 0) |
| 2421 | return false; |
| 2422 | |
| 2423 | intel_prepare_page_flip(dev, pipe); |
| 2424 | |
| 2425 | /* We detect FlipDone by looking for the change in PendingFlip from '1' |
| 2426 | * to '0' on the following vblank, i.e. IIR has the Pendingflip |
| 2427 | * asserted following the MI_DISPLAY_FLIP, but ISR is deasserted, hence |
| 2428 | * the flip is completed (no longer pending). Since this doesn't raise |
| 2429 | * an interrupt per se, we watch for the change at vblank. |
| 2430 | */ |
| 2431 | if (I915_READ16(ISR) & flip_pending) |
| 2432 | return false; |
| 2433 | |
| 2434 | intel_finish_page_flip(dev, pipe); |
| 2435 | |
| 2436 | return true; |
| 2437 | } |
| 2438 | |
Daniel Vetter | ff1f525 | 2012-10-02 15:10:55 +0200 | [diff] [blame] | 2439 | static irqreturn_t i8xx_irq_handler(int irq, void *arg) |
Chris Wilson | c2798b1 | 2012-04-22 21:13:57 +0100 | [diff] [blame] | 2440 | { |
| 2441 | struct drm_device *dev = (struct drm_device *) arg; |
| 2442 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Chris Wilson | c2798b1 | 2012-04-22 21:13:57 +0100 | [diff] [blame] | 2443 | u16 iir, new_iir; |
| 2444 | u32 pipe_stats[2]; |
| 2445 | unsigned long irqflags; |
| 2446 | int irq_received; |
| 2447 | int pipe; |
| 2448 | u16 flip_mask = |
| 2449 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | |
| 2450 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; |
| 2451 | |
| 2452 | atomic_inc(&dev_priv->irq_received); |
| 2453 | |
| 2454 | iir = I915_READ16(IIR); |
| 2455 | if (iir == 0) |
| 2456 | return IRQ_NONE; |
| 2457 | |
| 2458 | while (iir & ~flip_mask) { |
| 2459 | /* Can't rely on pipestat interrupt bit in iir as it might |
| 2460 | * have been cleared after the pipestat interrupt was received. |
| 2461 | * It doesn't set the bit in iir again, but it still produces |
| 2462 | * interrupts (for non-MSI). |
| 2463 | */ |
| 2464 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
| 2465 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) |
| 2466 | i915_handle_error(dev, false); |
| 2467 | |
| 2468 | for_each_pipe(pipe) { |
| 2469 | int reg = PIPESTAT(pipe); |
| 2470 | pipe_stats[pipe] = I915_READ(reg); |
| 2471 | |
| 2472 | /* |
| 2473 | * Clear the PIPE*STAT regs before the IIR |
| 2474 | */ |
| 2475 | if (pipe_stats[pipe] & 0x8000ffff) { |
| 2476 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) |
| 2477 | DRM_DEBUG_DRIVER("pipe %c underrun\n", |
| 2478 | pipe_name(pipe)); |
| 2479 | I915_WRITE(reg, pipe_stats[pipe]); |
| 2480 | irq_received = 1; |
| 2481 | } |
| 2482 | } |
| 2483 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
| 2484 | |
| 2485 | I915_WRITE16(IIR, iir & ~flip_mask); |
| 2486 | new_iir = I915_READ16(IIR); /* Flush posted writes */ |
| 2487 | |
Daniel Vetter | d05c617 | 2012-04-26 23:28:09 +0200 | [diff] [blame] | 2488 | i915_update_dri1_breadcrumb(dev); |
Chris Wilson | c2798b1 | 2012-04-22 21:13:57 +0100 | [diff] [blame] | 2489 | |
| 2490 | if (iir & I915_USER_INTERRUPT) |
| 2491 | notify_ring(dev, &dev_priv->ring[RCS]); |
| 2492 | |
| 2493 | if (pipe_stats[0] & PIPE_VBLANK_INTERRUPT_STATUS && |
Ville Syrjälä | 90a72f8 | 2013-02-19 23:16:44 +0200 | [diff] [blame] | 2494 | i8xx_handle_vblank(dev, 0, iir)) |
| 2495 | flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(0); |
Chris Wilson | c2798b1 | 2012-04-22 21:13:57 +0100 | [diff] [blame] | 2496 | |
| 2497 | if (pipe_stats[1] & PIPE_VBLANK_INTERRUPT_STATUS && |
Ville Syrjälä | 90a72f8 | 2013-02-19 23:16:44 +0200 | [diff] [blame] | 2498 | i8xx_handle_vblank(dev, 1, iir)) |
| 2499 | flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(1); |
Chris Wilson | c2798b1 | 2012-04-22 21:13:57 +0100 | [diff] [blame] | 2500 | |
| 2501 | iir = new_iir; |
| 2502 | } |
| 2503 | |
| 2504 | return IRQ_HANDLED; |
| 2505 | } |
| 2506 | |
| 2507 | static void i8xx_irq_uninstall(struct drm_device * dev) |
| 2508 | { |
| 2509 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 2510 | int pipe; |
| 2511 | |
Chris Wilson | c2798b1 | 2012-04-22 21:13:57 +0100 | [diff] [blame] | 2512 | for_each_pipe(pipe) { |
| 2513 | /* Clear enable bits; then clear status bits */ |
| 2514 | I915_WRITE(PIPESTAT(pipe), 0); |
| 2515 | I915_WRITE(PIPESTAT(pipe), I915_READ(PIPESTAT(pipe))); |
| 2516 | } |
| 2517 | I915_WRITE16(IMR, 0xffff); |
| 2518 | I915_WRITE16(IER, 0x0); |
| 2519 | I915_WRITE16(IIR, I915_READ16(IIR)); |
| 2520 | } |
| 2521 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2522 | static void i915_irq_preinstall(struct drm_device * dev) |
| 2523 | { |
| 2524 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 2525 | int pipe; |
| 2526 | |
| 2527 | atomic_set(&dev_priv->irq_received, 0); |
| 2528 | |
| 2529 | if (I915_HAS_HOTPLUG(dev)) { |
| 2530 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
| 2531 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); |
| 2532 | } |
| 2533 | |
Chris Wilson | 00d98eb | 2012-04-24 22:59:48 +0100 | [diff] [blame] | 2534 | I915_WRITE16(HWSTAM, 0xeffe); |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2535 | for_each_pipe(pipe) |
| 2536 | I915_WRITE(PIPESTAT(pipe), 0); |
| 2537 | I915_WRITE(IMR, 0xffffffff); |
| 2538 | I915_WRITE(IER, 0x0); |
| 2539 | POSTING_READ(IER); |
| 2540 | } |
| 2541 | |
| 2542 | static int i915_irq_postinstall(struct drm_device *dev) |
| 2543 | { |
| 2544 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Chris Wilson | 38bde18 | 2012-04-24 22:59:50 +0100 | [diff] [blame] | 2545 | u32 enable_mask; |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2546 | |
Chris Wilson | 38bde18 | 2012-04-24 22:59:50 +0100 | [diff] [blame] | 2547 | I915_WRITE(EMR, ~(I915_ERROR_PAGE_TABLE | I915_ERROR_MEMORY_REFRESH)); |
| 2548 | |
| 2549 | /* Unmask the interrupts that we always want on. */ |
| 2550 | dev_priv->irq_mask = |
| 2551 | ~(I915_ASLE_INTERRUPT | |
| 2552 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | |
| 2553 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | |
| 2554 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | |
| 2555 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | |
| 2556 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); |
| 2557 | |
| 2558 | enable_mask = |
| 2559 | I915_ASLE_INTERRUPT | |
| 2560 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | |
| 2561 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | |
| 2562 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT | |
| 2563 | I915_USER_INTERRUPT; |
| 2564 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2565 | if (I915_HAS_HOTPLUG(dev)) { |
Daniel Vetter | 20afbda | 2012-12-11 14:05:07 +0100 | [diff] [blame] | 2566 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
| 2567 | POSTING_READ(PORT_HOTPLUG_EN); |
| 2568 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2569 | /* Enable in IER... */ |
| 2570 | enable_mask |= I915_DISPLAY_PORT_INTERRUPT; |
| 2571 | /* and unmask in IMR */ |
| 2572 | dev_priv->irq_mask &= ~I915_DISPLAY_PORT_INTERRUPT; |
| 2573 | } |
| 2574 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2575 | I915_WRITE(IMR, dev_priv->irq_mask); |
| 2576 | I915_WRITE(IER, enable_mask); |
| 2577 | POSTING_READ(IER); |
| 2578 | |
Daniel Vetter | 20afbda | 2012-12-11 14:05:07 +0100 | [diff] [blame] | 2579 | intel_opregion_enable_asle(dev); |
| 2580 | |
| 2581 | return 0; |
| 2582 | } |
| 2583 | |
Ville Syrjälä | 90a72f8 | 2013-02-19 23:16:44 +0200 | [diff] [blame] | 2584 | /* |
| 2585 | * Returns true when a page flip has completed. |
| 2586 | */ |
| 2587 | static bool i915_handle_vblank(struct drm_device *dev, |
| 2588 | int plane, int pipe, u32 iir) |
| 2589 | { |
| 2590 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 2591 | u32 flip_pending = DISPLAY_PLANE_FLIP_PENDING(plane); |
| 2592 | |
| 2593 | if (!drm_handle_vblank(dev, pipe)) |
| 2594 | return false; |
| 2595 | |
| 2596 | if ((iir & flip_pending) == 0) |
| 2597 | return false; |
| 2598 | |
| 2599 | intel_prepare_page_flip(dev, plane); |
| 2600 | |
| 2601 | /* We detect FlipDone by looking for the change in PendingFlip from '1' |
| 2602 | * to '0' on the following vblank, i.e. IIR has the Pendingflip |
| 2603 | * asserted following the MI_DISPLAY_FLIP, but ISR is deasserted, hence |
| 2604 | * the flip is completed (no longer pending). Since this doesn't raise |
| 2605 | * an interrupt per se, we watch for the change at vblank. |
| 2606 | */ |
| 2607 | if (I915_READ(ISR) & flip_pending) |
| 2608 | return false; |
| 2609 | |
| 2610 | intel_finish_page_flip(dev, pipe); |
| 2611 | |
| 2612 | return true; |
| 2613 | } |
| 2614 | |
Daniel Vetter | ff1f525 | 2012-10-02 15:10:55 +0200 | [diff] [blame] | 2615 | static irqreturn_t i915_irq_handler(int irq, void *arg) |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2616 | { |
| 2617 | struct drm_device *dev = (struct drm_device *) arg; |
| 2618 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Chris Wilson | 8291ee9 | 2012-04-24 22:59:47 +0100 | [diff] [blame] | 2619 | u32 iir, new_iir, pipe_stats[I915_MAX_PIPES]; |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2620 | unsigned long irqflags; |
Chris Wilson | 38bde18 | 2012-04-24 22:59:50 +0100 | [diff] [blame] | 2621 | u32 flip_mask = |
| 2622 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | |
| 2623 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; |
Chris Wilson | 38bde18 | 2012-04-24 22:59:50 +0100 | [diff] [blame] | 2624 | int pipe, ret = IRQ_NONE; |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2625 | |
| 2626 | atomic_inc(&dev_priv->irq_received); |
| 2627 | |
| 2628 | iir = I915_READ(IIR); |
Chris Wilson | 38bde18 | 2012-04-24 22:59:50 +0100 | [diff] [blame] | 2629 | do { |
| 2630 | bool irq_received = (iir & ~flip_mask) != 0; |
Chris Wilson | 8291ee9 | 2012-04-24 22:59:47 +0100 | [diff] [blame] | 2631 | bool blc_event = false; |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2632 | |
| 2633 | /* Can't rely on pipestat interrupt bit in iir as it might |
| 2634 | * have been cleared after the pipestat interrupt was received. |
| 2635 | * It doesn't set the bit in iir again, but it still produces |
| 2636 | * interrupts (for non-MSI). |
| 2637 | */ |
| 2638 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
| 2639 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) |
| 2640 | i915_handle_error(dev, false); |
| 2641 | |
| 2642 | for_each_pipe(pipe) { |
| 2643 | int reg = PIPESTAT(pipe); |
| 2644 | pipe_stats[pipe] = I915_READ(reg); |
| 2645 | |
Chris Wilson | 38bde18 | 2012-04-24 22:59:50 +0100 | [diff] [blame] | 2646 | /* Clear the PIPE*STAT regs before the IIR */ |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2647 | if (pipe_stats[pipe] & 0x8000ffff) { |
| 2648 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) |
| 2649 | DRM_DEBUG_DRIVER("pipe %c underrun\n", |
| 2650 | pipe_name(pipe)); |
| 2651 | I915_WRITE(reg, pipe_stats[pipe]); |
Chris Wilson | 38bde18 | 2012-04-24 22:59:50 +0100 | [diff] [blame] | 2652 | irq_received = true; |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2653 | } |
| 2654 | } |
| 2655 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
| 2656 | |
| 2657 | if (!irq_received) |
| 2658 | break; |
| 2659 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2660 | /* Consume port. Then clear IIR or we'll miss events */ |
| 2661 | if ((I915_HAS_HOTPLUG(dev)) && |
| 2662 | (iir & I915_DISPLAY_PORT_INTERRUPT)) { |
| 2663 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); |
Egbert Eich | b543fb0 | 2013-04-16 13:36:54 +0200 | [diff] [blame^] | 2664 | u32 hotplug_trigger = hotplug_status & HOTPLUG_INT_STATUS_I915; |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2665 | |
| 2666 | DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", |
| 2667 | hotplug_status); |
Egbert Eich | b543fb0 | 2013-04-16 13:36:54 +0200 | [diff] [blame^] | 2668 | if (hotplug_trigger) { |
| 2669 | hotplug_irq_storm_detect(dev, hotplug_trigger, hpd_status_i915); |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2670 | queue_work(dev_priv->wq, |
| 2671 | &dev_priv->hotplug_work); |
Egbert Eich | b543fb0 | 2013-04-16 13:36:54 +0200 | [diff] [blame^] | 2672 | } |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2673 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); |
Chris Wilson | 38bde18 | 2012-04-24 22:59:50 +0100 | [diff] [blame] | 2674 | POSTING_READ(PORT_HOTPLUG_STAT); |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2675 | } |
| 2676 | |
Chris Wilson | 38bde18 | 2012-04-24 22:59:50 +0100 | [diff] [blame] | 2677 | I915_WRITE(IIR, iir & ~flip_mask); |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2678 | new_iir = I915_READ(IIR); /* Flush posted writes */ |
| 2679 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2680 | if (iir & I915_USER_INTERRUPT) |
| 2681 | notify_ring(dev, &dev_priv->ring[RCS]); |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2682 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2683 | for_each_pipe(pipe) { |
Chris Wilson | 38bde18 | 2012-04-24 22:59:50 +0100 | [diff] [blame] | 2684 | int plane = pipe; |
| 2685 | if (IS_MOBILE(dev)) |
| 2686 | plane = !plane; |
Ville Syrjälä | 5e2032d | 2013-02-19 15:16:38 +0200 | [diff] [blame] | 2687 | |
Ville Syrjälä | 90a72f8 | 2013-02-19 23:16:44 +0200 | [diff] [blame] | 2688 | if (pipe_stats[pipe] & PIPE_VBLANK_INTERRUPT_STATUS && |
| 2689 | i915_handle_vblank(dev, plane, pipe, iir)) |
| 2690 | flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(plane); |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2691 | |
| 2692 | if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) |
| 2693 | blc_event = true; |
| 2694 | } |
| 2695 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2696 | if (blc_event || (iir & I915_ASLE_INTERRUPT)) |
| 2697 | intel_opregion_asle_intr(dev); |
| 2698 | |
| 2699 | /* With MSI, interrupts are only generated when iir |
| 2700 | * transitions from zero to nonzero. If another bit got |
| 2701 | * set while we were handling the existing iir bits, then |
| 2702 | * we would never get another interrupt. |
| 2703 | * |
| 2704 | * This is fine on non-MSI as well, as if we hit this path |
| 2705 | * we avoid exiting the interrupt handler only to generate |
| 2706 | * another one. |
| 2707 | * |
| 2708 | * Note that for MSI this could cause a stray interrupt report |
| 2709 | * if an interrupt landed in the time between writing IIR and |
| 2710 | * the posting read. This should be rare enough to never |
| 2711 | * trigger the 99% of 100,000 interrupts test for disabling |
| 2712 | * stray interrupts. |
| 2713 | */ |
Chris Wilson | 38bde18 | 2012-04-24 22:59:50 +0100 | [diff] [blame] | 2714 | ret = IRQ_HANDLED; |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2715 | iir = new_iir; |
Chris Wilson | 38bde18 | 2012-04-24 22:59:50 +0100 | [diff] [blame] | 2716 | } while (iir & ~flip_mask); |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2717 | |
Daniel Vetter | d05c617 | 2012-04-26 23:28:09 +0200 | [diff] [blame] | 2718 | i915_update_dri1_breadcrumb(dev); |
Chris Wilson | 8291ee9 | 2012-04-24 22:59:47 +0100 | [diff] [blame] | 2719 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2720 | return ret; |
| 2721 | } |
| 2722 | |
| 2723 | static void i915_irq_uninstall(struct drm_device * dev) |
| 2724 | { |
| 2725 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 2726 | int pipe; |
| 2727 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2728 | if (I915_HAS_HOTPLUG(dev)) { |
| 2729 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
| 2730 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); |
| 2731 | } |
| 2732 | |
Chris Wilson | 00d98eb | 2012-04-24 22:59:48 +0100 | [diff] [blame] | 2733 | I915_WRITE16(HWSTAM, 0xffff); |
Chris Wilson | 55b3975 | 2012-04-24 22:59:49 +0100 | [diff] [blame] | 2734 | for_each_pipe(pipe) { |
| 2735 | /* Clear enable bits; then clear status bits */ |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2736 | I915_WRITE(PIPESTAT(pipe), 0); |
Chris Wilson | 55b3975 | 2012-04-24 22:59:49 +0100 | [diff] [blame] | 2737 | I915_WRITE(PIPESTAT(pipe), I915_READ(PIPESTAT(pipe))); |
| 2738 | } |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2739 | I915_WRITE(IMR, 0xffffffff); |
| 2740 | I915_WRITE(IER, 0x0); |
| 2741 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2742 | I915_WRITE(IIR, I915_READ(IIR)); |
| 2743 | } |
| 2744 | |
| 2745 | static void i965_irq_preinstall(struct drm_device * dev) |
| 2746 | { |
| 2747 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 2748 | int pipe; |
| 2749 | |
| 2750 | atomic_set(&dev_priv->irq_received, 0); |
| 2751 | |
Chris Wilson | adca473 | 2012-05-11 18:01:31 +0100 | [diff] [blame] | 2752 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
| 2753 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2754 | |
| 2755 | I915_WRITE(HWSTAM, 0xeffe); |
| 2756 | for_each_pipe(pipe) |
| 2757 | I915_WRITE(PIPESTAT(pipe), 0); |
| 2758 | I915_WRITE(IMR, 0xffffffff); |
| 2759 | I915_WRITE(IER, 0x0); |
| 2760 | POSTING_READ(IER); |
| 2761 | } |
| 2762 | |
| 2763 | static int i965_irq_postinstall(struct drm_device *dev) |
| 2764 | { |
| 2765 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Chris Wilson | bbba0a9 | 2012-04-24 22:59:51 +0100 | [diff] [blame] | 2766 | u32 enable_mask; |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2767 | u32 error_mask; |
| 2768 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2769 | /* Unmask the interrupts that we always want on. */ |
Chris Wilson | bbba0a9 | 2012-04-24 22:59:51 +0100 | [diff] [blame] | 2770 | dev_priv->irq_mask = ~(I915_ASLE_INTERRUPT | |
Chris Wilson | adca473 | 2012-05-11 18:01:31 +0100 | [diff] [blame] | 2771 | I915_DISPLAY_PORT_INTERRUPT | |
Chris Wilson | bbba0a9 | 2012-04-24 22:59:51 +0100 | [diff] [blame] | 2772 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | |
| 2773 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT | |
| 2774 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | |
| 2775 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT | |
| 2776 | I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT); |
| 2777 | |
| 2778 | enable_mask = ~dev_priv->irq_mask; |
Ville Syrjälä | 21ad833 | 2013-02-19 15:16:39 +0200 | [diff] [blame] | 2779 | enable_mask &= ~(I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | |
| 2780 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT); |
Chris Wilson | bbba0a9 | 2012-04-24 22:59:51 +0100 | [diff] [blame] | 2781 | enable_mask |= I915_USER_INTERRUPT; |
| 2782 | |
| 2783 | if (IS_G4X(dev)) |
| 2784 | enable_mask |= I915_BSD_USER_INTERRUPT; |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2785 | |
Daniel Vetter | 515ac2b | 2012-12-01 13:53:44 +0100 | [diff] [blame] | 2786 | i915_enable_pipestat(dev_priv, 0, PIPE_GMBUS_EVENT_ENABLE); |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2787 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2788 | /* |
| 2789 | * Enable some error detection, note the instruction error mask |
| 2790 | * bit is reserved, so we leave it masked. |
| 2791 | */ |
| 2792 | if (IS_G4X(dev)) { |
| 2793 | error_mask = ~(GM45_ERROR_PAGE_TABLE | |
| 2794 | GM45_ERROR_MEM_PRIV | |
| 2795 | GM45_ERROR_CP_PRIV | |
| 2796 | I915_ERROR_MEMORY_REFRESH); |
| 2797 | } else { |
| 2798 | error_mask = ~(I915_ERROR_PAGE_TABLE | |
| 2799 | I915_ERROR_MEMORY_REFRESH); |
| 2800 | } |
| 2801 | I915_WRITE(EMR, error_mask); |
| 2802 | |
| 2803 | I915_WRITE(IMR, dev_priv->irq_mask); |
| 2804 | I915_WRITE(IER, enable_mask); |
| 2805 | POSTING_READ(IER); |
| 2806 | |
Daniel Vetter | 20afbda | 2012-12-11 14:05:07 +0100 | [diff] [blame] | 2807 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
| 2808 | POSTING_READ(PORT_HOTPLUG_EN); |
| 2809 | |
| 2810 | intel_opregion_enable_asle(dev); |
| 2811 | |
| 2812 | return 0; |
| 2813 | } |
| 2814 | |
Egbert Eich | bac56d5 | 2013-02-25 12:06:51 -0500 | [diff] [blame] | 2815 | static void i915_hpd_irq_setup(struct drm_device *dev) |
Daniel Vetter | 20afbda | 2012-12-11 14:05:07 +0100 | [diff] [blame] | 2816 | { |
| 2817 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Egbert Eich | e5868a3 | 2013-02-28 04:17:12 -0500 | [diff] [blame] | 2818 | struct drm_mode_config *mode_config = &dev->mode_config; |
| 2819 | struct intel_encoder *encoder; |
Daniel Vetter | 20afbda | 2012-12-11 14:05:07 +0100 | [diff] [blame] | 2820 | u32 hotplug_en; |
| 2821 | |
Egbert Eich | bac56d5 | 2013-02-25 12:06:51 -0500 | [diff] [blame] | 2822 | if (I915_HAS_HOTPLUG(dev)) { |
| 2823 | hotplug_en = I915_READ(PORT_HOTPLUG_EN); |
| 2824 | hotplug_en &= ~HOTPLUG_INT_EN_MASK; |
| 2825 | /* Note HDMI and DP share hotplug bits */ |
Egbert Eich | e5868a3 | 2013-02-28 04:17:12 -0500 | [diff] [blame] | 2826 | /* enable bits are the same for all generations */ |
Egbert Eich | bac56d5 | 2013-02-25 12:06:51 -0500 | [diff] [blame] | 2827 | list_for_each_entry(encoder, &mode_config->encoder_list, base.head) |
| 2828 | hotplug_en |= hpd_mask_i915[encoder->hpd_pin]; |
| 2829 | /* Programming the CRT detection parameters tends |
| 2830 | to generate a spurious hotplug event about three |
| 2831 | seconds later. So just do it once. |
| 2832 | */ |
| 2833 | if (IS_G4X(dev)) |
| 2834 | hotplug_en |= CRT_HOTPLUG_ACTIVATION_PERIOD_64; |
Daniel Vetter | 85fc95b | 2013-03-27 15:47:11 +0100 | [diff] [blame] | 2835 | hotplug_en &= ~CRT_HOTPLUG_VOLTAGE_COMPARE_MASK; |
Egbert Eich | bac56d5 | 2013-02-25 12:06:51 -0500 | [diff] [blame] | 2836 | hotplug_en |= CRT_HOTPLUG_VOLTAGE_COMPARE_50; |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2837 | |
Egbert Eich | bac56d5 | 2013-02-25 12:06:51 -0500 | [diff] [blame] | 2838 | /* Ignore TV since it's buggy */ |
| 2839 | I915_WRITE(PORT_HOTPLUG_EN, hotplug_en); |
| 2840 | } |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2841 | } |
| 2842 | |
Daniel Vetter | ff1f525 | 2012-10-02 15:10:55 +0200 | [diff] [blame] | 2843 | static irqreturn_t i965_irq_handler(int irq, void *arg) |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2844 | { |
| 2845 | struct drm_device *dev = (struct drm_device *) arg; |
| 2846 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2847 | u32 iir, new_iir; |
| 2848 | u32 pipe_stats[I915_MAX_PIPES]; |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2849 | unsigned long irqflags; |
| 2850 | int irq_received; |
| 2851 | int ret = IRQ_NONE, pipe; |
Ville Syrjälä | 21ad833 | 2013-02-19 15:16:39 +0200 | [diff] [blame] | 2852 | u32 flip_mask = |
| 2853 | I915_DISPLAY_PLANE_A_FLIP_PENDING_INTERRUPT | |
| 2854 | I915_DISPLAY_PLANE_B_FLIP_PENDING_INTERRUPT; |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2855 | |
| 2856 | atomic_inc(&dev_priv->irq_received); |
| 2857 | |
| 2858 | iir = I915_READ(IIR); |
| 2859 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2860 | for (;;) { |
Chris Wilson | 2c8ba29 | 2012-04-24 22:59:46 +0100 | [diff] [blame] | 2861 | bool blc_event = false; |
| 2862 | |
Ville Syrjälä | 21ad833 | 2013-02-19 15:16:39 +0200 | [diff] [blame] | 2863 | irq_received = (iir & ~flip_mask) != 0; |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2864 | |
| 2865 | /* Can't rely on pipestat interrupt bit in iir as it might |
| 2866 | * have been cleared after the pipestat interrupt was received. |
| 2867 | * It doesn't set the bit in iir again, but it still produces |
| 2868 | * interrupts (for non-MSI). |
| 2869 | */ |
| 2870 | spin_lock_irqsave(&dev_priv->irq_lock, irqflags); |
| 2871 | if (iir & I915_RENDER_COMMAND_PARSER_ERROR_INTERRUPT) |
| 2872 | i915_handle_error(dev, false); |
| 2873 | |
| 2874 | for_each_pipe(pipe) { |
| 2875 | int reg = PIPESTAT(pipe); |
| 2876 | pipe_stats[pipe] = I915_READ(reg); |
| 2877 | |
| 2878 | /* |
| 2879 | * Clear the PIPE*STAT regs before the IIR |
| 2880 | */ |
| 2881 | if (pipe_stats[pipe] & 0x8000ffff) { |
| 2882 | if (pipe_stats[pipe] & PIPE_FIFO_UNDERRUN_STATUS) |
| 2883 | DRM_DEBUG_DRIVER("pipe %c underrun\n", |
| 2884 | pipe_name(pipe)); |
| 2885 | I915_WRITE(reg, pipe_stats[pipe]); |
| 2886 | irq_received = 1; |
| 2887 | } |
| 2888 | } |
| 2889 | spin_unlock_irqrestore(&dev_priv->irq_lock, irqflags); |
| 2890 | |
| 2891 | if (!irq_received) |
| 2892 | break; |
| 2893 | |
| 2894 | ret = IRQ_HANDLED; |
| 2895 | |
| 2896 | /* Consume port. Then clear IIR or we'll miss events */ |
Chris Wilson | adca473 | 2012-05-11 18:01:31 +0100 | [diff] [blame] | 2897 | if (iir & I915_DISPLAY_PORT_INTERRUPT) { |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2898 | u32 hotplug_status = I915_READ(PORT_HOTPLUG_STAT); |
Egbert Eich | b543fb0 | 2013-04-16 13:36:54 +0200 | [diff] [blame^] | 2899 | u32 hotplug_trigger = hotplug_status & (IS_G4X(dev) ? |
| 2900 | HOTPLUG_INT_STATUS_G4X : |
| 2901 | HOTPLUG_INT_STATUS_I965); |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2902 | |
| 2903 | DRM_DEBUG_DRIVER("hotplug event received, stat 0x%08x\n", |
| 2904 | hotplug_status); |
Egbert Eich | b543fb0 | 2013-04-16 13:36:54 +0200 | [diff] [blame^] | 2905 | if (hotplug_trigger) { |
| 2906 | hotplug_irq_storm_detect(dev, hotplug_trigger, |
| 2907 | IS_G4X(dev) ? hpd_status_gen4 : hpd_status_i965); |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2908 | queue_work(dev_priv->wq, |
| 2909 | &dev_priv->hotplug_work); |
Egbert Eich | b543fb0 | 2013-04-16 13:36:54 +0200 | [diff] [blame^] | 2910 | } |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2911 | I915_WRITE(PORT_HOTPLUG_STAT, hotplug_status); |
| 2912 | I915_READ(PORT_HOTPLUG_STAT); |
| 2913 | } |
| 2914 | |
Ville Syrjälä | 21ad833 | 2013-02-19 15:16:39 +0200 | [diff] [blame] | 2915 | I915_WRITE(IIR, iir & ~flip_mask); |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2916 | new_iir = I915_READ(IIR); /* Flush posted writes */ |
| 2917 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2918 | if (iir & I915_USER_INTERRUPT) |
| 2919 | notify_ring(dev, &dev_priv->ring[RCS]); |
| 2920 | if (iir & I915_BSD_USER_INTERRUPT) |
| 2921 | notify_ring(dev, &dev_priv->ring[VCS]); |
| 2922 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2923 | for_each_pipe(pipe) { |
Chris Wilson | 2c8ba29 | 2012-04-24 22:59:46 +0100 | [diff] [blame] | 2924 | if (pipe_stats[pipe] & PIPE_START_VBLANK_INTERRUPT_STATUS && |
Ville Syrjälä | 90a72f8 | 2013-02-19 23:16:44 +0200 | [diff] [blame] | 2925 | i915_handle_vblank(dev, pipe, pipe, iir)) |
| 2926 | flip_mask &= ~DISPLAY_PLANE_FLIP_PENDING(pipe); |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2927 | |
| 2928 | if (pipe_stats[pipe] & PIPE_LEGACY_BLC_EVENT_STATUS) |
| 2929 | blc_event = true; |
| 2930 | } |
| 2931 | |
| 2932 | |
| 2933 | if (blc_event || (iir & I915_ASLE_INTERRUPT)) |
| 2934 | intel_opregion_asle_intr(dev); |
| 2935 | |
Daniel Vetter | 515ac2b | 2012-12-01 13:53:44 +0100 | [diff] [blame] | 2936 | if (pipe_stats[0] & PIPE_GMBUS_INTERRUPT_STATUS) |
| 2937 | gmbus_irq_handler(dev); |
| 2938 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2939 | /* With MSI, interrupts are only generated when iir |
| 2940 | * transitions from zero to nonzero. If another bit got |
| 2941 | * set while we were handling the existing iir bits, then |
| 2942 | * we would never get another interrupt. |
| 2943 | * |
| 2944 | * This is fine on non-MSI as well, as if we hit this path |
| 2945 | * we avoid exiting the interrupt handler only to generate |
| 2946 | * another one. |
| 2947 | * |
| 2948 | * Note that for MSI this could cause a stray interrupt report |
| 2949 | * if an interrupt landed in the time between writing IIR and |
| 2950 | * the posting read. This should be rare enough to never |
| 2951 | * trigger the 99% of 100,000 interrupts test for disabling |
| 2952 | * stray interrupts. |
| 2953 | */ |
| 2954 | iir = new_iir; |
| 2955 | } |
| 2956 | |
Daniel Vetter | d05c617 | 2012-04-26 23:28:09 +0200 | [diff] [blame] | 2957 | i915_update_dri1_breadcrumb(dev); |
Chris Wilson | 2c8ba29 | 2012-04-24 22:59:46 +0100 | [diff] [blame] | 2958 | |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2959 | return ret; |
| 2960 | } |
| 2961 | |
| 2962 | static void i965_irq_uninstall(struct drm_device * dev) |
| 2963 | { |
| 2964 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 2965 | int pipe; |
| 2966 | |
| 2967 | if (!dev_priv) |
| 2968 | return; |
| 2969 | |
Chris Wilson | adca473 | 2012-05-11 18:01:31 +0100 | [diff] [blame] | 2970 | I915_WRITE(PORT_HOTPLUG_EN, 0); |
| 2971 | I915_WRITE(PORT_HOTPLUG_STAT, I915_READ(PORT_HOTPLUG_STAT)); |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 2972 | |
| 2973 | I915_WRITE(HWSTAM, 0xffffffff); |
| 2974 | for_each_pipe(pipe) |
| 2975 | I915_WRITE(PIPESTAT(pipe), 0); |
| 2976 | I915_WRITE(IMR, 0xffffffff); |
| 2977 | I915_WRITE(IER, 0x0); |
| 2978 | |
| 2979 | for_each_pipe(pipe) |
| 2980 | I915_WRITE(PIPESTAT(pipe), |
| 2981 | I915_READ(PIPESTAT(pipe)) & 0x8000ffff); |
| 2982 | I915_WRITE(IIR, I915_READ(IIR)); |
| 2983 | } |
| 2984 | |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 2985 | void intel_irq_init(struct drm_device *dev) |
| 2986 | { |
Chris Wilson | 8b2e326 | 2012-04-24 22:59:41 +0100 | [diff] [blame] | 2987 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2988 | |
| 2989 | INIT_WORK(&dev_priv->hotplug_work, i915_hotplug_work_func); |
Daniel Vetter | 99584db | 2012-11-14 17:14:04 +0100 | [diff] [blame] | 2990 | INIT_WORK(&dev_priv->gpu_error.work, i915_error_work_func); |
Daniel Vetter | c6a828d | 2012-08-08 23:35:35 +0200 | [diff] [blame] | 2991 | INIT_WORK(&dev_priv->rps.work, gen6_pm_rps_work); |
Daniel Vetter | a4da4fa | 2012-11-02 19:55:07 +0100 | [diff] [blame] | 2992 | INIT_WORK(&dev_priv->l3_parity.error_work, ivybridge_parity_work); |
Chris Wilson | 8b2e326 | 2012-04-24 22:59:41 +0100 | [diff] [blame] | 2993 | |
Daniel Vetter | 99584db | 2012-11-14 17:14:04 +0100 | [diff] [blame] | 2994 | setup_timer(&dev_priv->gpu_error.hangcheck_timer, |
| 2995 | i915_hangcheck_elapsed, |
Daniel Vetter | 61bac78 | 2012-12-01 21:03:21 +0100 | [diff] [blame] | 2996 | (unsigned long) dev); |
| 2997 | |
Tomas Janousek | 97a19a2 | 2012-12-08 13:48:13 +0100 | [diff] [blame] | 2998 | pm_qos_add_request(&dev_priv->pm_qos, PM_QOS_CPU_DMA_LATENCY, PM_QOS_DEFAULT_VALUE); |
Daniel Vetter | 9ee32fea | 2012-12-01 13:53:48 +0100 | [diff] [blame] | 2999 | |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 3000 | dev->driver->get_vblank_counter = i915_get_vblank_counter; |
| 3001 | dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */ |
Eugeni Dodonov | 7d4e146 | 2012-05-09 15:37:09 -0300 | [diff] [blame] | 3002 | if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5) { |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 3003 | dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */ |
| 3004 | dev->driver->get_vblank_counter = gm45_get_vblank_counter; |
| 3005 | } |
| 3006 | |
Keith Packard | c3613de | 2011-08-12 17:05:54 -0700 | [diff] [blame] | 3007 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
| 3008 | dev->driver->get_vblank_timestamp = i915_get_vblank_timestamp; |
| 3009 | else |
| 3010 | dev->driver->get_vblank_timestamp = NULL; |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 3011 | dev->driver->get_scanout_position = i915_get_crtc_scanoutpos; |
| 3012 | |
Jesse Barnes | 7e231dbe | 2012-03-28 13:39:38 -0700 | [diff] [blame] | 3013 | if (IS_VALLEYVIEW(dev)) { |
| 3014 | dev->driver->irq_handler = valleyview_irq_handler; |
| 3015 | dev->driver->irq_preinstall = valleyview_irq_preinstall; |
| 3016 | dev->driver->irq_postinstall = valleyview_irq_postinstall; |
| 3017 | dev->driver->irq_uninstall = valleyview_irq_uninstall; |
| 3018 | dev->driver->enable_vblank = valleyview_enable_vblank; |
| 3019 | dev->driver->disable_vblank = valleyview_disable_vblank; |
Egbert Eich | fa00abe | 2013-02-25 12:06:48 -0500 | [diff] [blame] | 3020 | dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup; |
Daniel Vetter | 4a06e20 | 2012-12-01 13:53:40 +0100 | [diff] [blame] | 3021 | } else if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) { |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 3022 | /* Share pre & uninstall handlers with ILK/SNB */ |
| 3023 | dev->driver->irq_handler = ivybridge_irq_handler; |
| 3024 | dev->driver->irq_preinstall = ironlake_irq_preinstall; |
| 3025 | dev->driver->irq_postinstall = ivybridge_irq_postinstall; |
| 3026 | dev->driver->irq_uninstall = ironlake_irq_uninstall; |
| 3027 | dev->driver->enable_vblank = ivybridge_enable_vblank; |
| 3028 | dev->driver->disable_vblank = ivybridge_disable_vblank; |
Daniel Vetter | 82a28bc | 2013-03-27 15:55:01 +0100 | [diff] [blame] | 3029 | dev_priv->display.hpd_irq_setup = ibx_hpd_irq_setup; |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 3030 | } else if (HAS_PCH_SPLIT(dev)) { |
| 3031 | dev->driver->irq_handler = ironlake_irq_handler; |
| 3032 | dev->driver->irq_preinstall = ironlake_irq_preinstall; |
| 3033 | dev->driver->irq_postinstall = ironlake_irq_postinstall; |
| 3034 | dev->driver->irq_uninstall = ironlake_irq_uninstall; |
| 3035 | dev->driver->enable_vblank = ironlake_enable_vblank; |
| 3036 | dev->driver->disable_vblank = ironlake_disable_vblank; |
Daniel Vetter | 82a28bc | 2013-03-27 15:55:01 +0100 | [diff] [blame] | 3037 | dev_priv->display.hpd_irq_setup = ibx_hpd_irq_setup; |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 3038 | } else { |
Chris Wilson | c2798b1 | 2012-04-22 21:13:57 +0100 | [diff] [blame] | 3039 | if (INTEL_INFO(dev)->gen == 2) { |
| 3040 | dev->driver->irq_preinstall = i8xx_irq_preinstall; |
| 3041 | dev->driver->irq_postinstall = i8xx_irq_postinstall; |
| 3042 | dev->driver->irq_handler = i8xx_irq_handler; |
| 3043 | dev->driver->irq_uninstall = i8xx_irq_uninstall; |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 3044 | } else if (INTEL_INFO(dev)->gen == 3) { |
| 3045 | dev->driver->irq_preinstall = i915_irq_preinstall; |
| 3046 | dev->driver->irq_postinstall = i915_irq_postinstall; |
| 3047 | dev->driver->irq_uninstall = i915_irq_uninstall; |
| 3048 | dev->driver->irq_handler = i915_irq_handler; |
Daniel Vetter | 20afbda | 2012-12-11 14:05:07 +0100 | [diff] [blame] | 3049 | dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup; |
Chris Wilson | c2798b1 | 2012-04-22 21:13:57 +0100 | [diff] [blame] | 3050 | } else { |
Chris Wilson | a266c7d | 2012-04-24 22:59:44 +0100 | [diff] [blame] | 3051 | dev->driver->irq_preinstall = i965_irq_preinstall; |
| 3052 | dev->driver->irq_postinstall = i965_irq_postinstall; |
| 3053 | dev->driver->irq_uninstall = i965_irq_uninstall; |
| 3054 | dev->driver->irq_handler = i965_irq_handler; |
Egbert Eich | bac56d5 | 2013-02-25 12:06:51 -0500 | [diff] [blame] | 3055 | dev_priv->display.hpd_irq_setup = i915_hpd_irq_setup; |
Chris Wilson | c2798b1 | 2012-04-22 21:13:57 +0100 | [diff] [blame] | 3056 | } |
Jesse Barnes | f71d4af | 2011-06-28 13:00:41 -0700 | [diff] [blame] | 3057 | dev->driver->enable_vblank = i915_enable_vblank; |
| 3058 | dev->driver->disable_vblank = i915_disable_vblank; |
| 3059 | } |
| 3060 | } |
Daniel Vetter | 20afbda | 2012-12-11 14:05:07 +0100 | [diff] [blame] | 3061 | |
| 3062 | void intel_hpd_init(struct drm_device *dev) |
| 3063 | { |
| 3064 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3065 | |
| 3066 | if (dev_priv->display.hpd_irq_setup) |
| 3067 | dev_priv->display.hpd_irq_setup(dev); |
| 3068 | } |