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 | |
| 29 | #include "drmP.h" |
| 30 | #include "drm.h" |
| 31 | #include "i915_drm.h" |
| 32 | #include "i915_drv.h" |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 33 | #include "intel_drv.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | #define MAX_NOPID ((u32)~0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 37 | /** |
| 38 | * Interrupts that are always left unmasked. |
| 39 | * |
| 40 | * Since pipe events are edge-triggered from the PIPESTAT register to IIR, |
| 41 | * we leave them always unmasked in IMR and then control enabling them through |
| 42 | * PIPESTAT alone. |
| 43 | */ |
| 44 | #define I915_INTERRUPT_ENABLE_FIX (I915_ASLE_INTERRUPT | \ |
| 45 | I915_DISPLAY_PIPE_A_EVENT_INTERRUPT | \ |
| 46 | I915_DISPLAY_PIPE_B_EVENT_INTERRUPT) |
| 47 | |
| 48 | /** Interrupts that we mask and unmask at runtime. */ |
| 49 | #define I915_INTERRUPT_ENABLE_VAR (I915_USER_INTERRUPT) |
| 50 | |
| 51 | /** These are all of the interrupts used by the driver */ |
| 52 | #define I915_INTERRUPT_ENABLE_MASK (I915_INTERRUPT_ENABLE_FIX | \ |
| 53 | I915_INTERRUPT_ENABLE_VAR) |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 54 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 55 | #define I915_PIPE_VBLANK_STATUS (PIPE_START_VBLANK_INTERRUPT_STATUS |\ |
| 56 | PIPE_VBLANK_INTERRUPT_STATUS) |
| 57 | |
| 58 | #define I915_PIPE_VBLANK_ENABLE (PIPE_START_VBLANK_INTERRUPT_ENABLE |\ |
| 59 | PIPE_VBLANK_INTERRUPT_ENABLE) |
| 60 | |
| 61 | #define DRM_I915_VBLANK_PIPE_ALL (DRM_I915_VBLANK_PIPE_A | \ |
| 62 | DRM_I915_VBLANK_PIPE_B) |
| 63 | |
Matthew Garrett | 8ee1c3d | 2008-08-05 19:37:25 +0100 | [diff] [blame] | 64 | void |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 65 | i915_enable_irq(drm_i915_private_t *dev_priv, u32 mask) |
| 66 | { |
| 67 | if ((dev_priv->irq_mask_reg & mask) != 0) { |
| 68 | dev_priv->irq_mask_reg &= ~mask; |
| 69 | I915_WRITE(IMR, dev_priv->irq_mask_reg); |
| 70 | (void) I915_READ(IMR); |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | static inline void |
| 75 | i915_disable_irq(drm_i915_private_t *dev_priv, u32 mask) |
| 76 | { |
| 77 | if ((dev_priv->irq_mask_reg & mask) != mask) { |
| 78 | dev_priv->irq_mask_reg |= mask; |
| 79 | I915_WRITE(IMR, dev_priv->irq_mask_reg); |
| 80 | (void) I915_READ(IMR); |
| 81 | } |
| 82 | } |
| 83 | |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 84 | static inline u32 |
| 85 | i915_pipestat(int pipe) |
| 86 | { |
| 87 | if (pipe == 0) |
| 88 | return PIPEASTAT; |
| 89 | if (pipe == 1) |
| 90 | return PIPEBSTAT; |
Andrew Morton | 9c84ba4 | 2008-12-01 13:14:08 -0800 | [diff] [blame] | 91 | BUG(); |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 92 | } |
| 93 | |
| 94 | void |
| 95 | i915_enable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask) |
| 96 | { |
| 97 | if ((dev_priv->pipestat[pipe] & mask) != mask) { |
| 98 | u32 reg = i915_pipestat(pipe); |
| 99 | |
| 100 | dev_priv->pipestat[pipe] |= mask; |
| 101 | /* Enable the interrupt, clear any pending status */ |
| 102 | I915_WRITE(reg, dev_priv->pipestat[pipe] | (mask >> 16)); |
| 103 | (void) I915_READ(reg); |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | void |
| 108 | i915_disable_pipestat(drm_i915_private_t *dev_priv, int pipe, u32 mask) |
| 109 | { |
| 110 | if ((dev_priv->pipestat[pipe] & mask) != 0) { |
| 111 | u32 reg = i915_pipestat(pipe); |
| 112 | |
| 113 | dev_priv->pipestat[pipe] &= ~mask; |
| 114 | I915_WRITE(reg, dev_priv->pipestat[pipe]); |
| 115 | (void) I915_READ(reg); |
| 116 | } |
| 117 | } |
| 118 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 119 | /** |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 120 | * i915_pipe_enabled - check if a pipe is enabled |
| 121 | * @dev: DRM device |
| 122 | * @pipe: pipe to check |
| 123 | * |
| 124 | * Reading certain registers when the pipe is disabled can hang the chip. |
| 125 | * Use this routine to make sure the PLL is running and the pipe is active |
| 126 | * before reading such registers if unsure. |
| 127 | */ |
| 128 | static int |
| 129 | i915_pipe_enabled(struct drm_device *dev, int pipe) |
| 130 | { |
| 131 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 132 | unsigned long pipeconf = pipe ? PIPEBCONF : PIPEACONF; |
| 133 | |
| 134 | if (I915_READ(pipeconf) & PIPEACONF_ENABLE) |
| 135 | return 1; |
| 136 | |
| 137 | return 0; |
| 138 | } |
| 139 | |
Keith Packard | 42f52ef | 2008-10-18 19:39:29 -0700 | [diff] [blame] | 140 | /* Called from drm generic code, passed a 'crtc', which |
| 141 | * we use as a pipe index |
| 142 | */ |
| 143 | u32 i915_get_vblank_counter(struct drm_device *dev, int pipe) |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 144 | { |
| 145 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 146 | unsigned long high_frame; |
| 147 | unsigned long low_frame; |
| 148 | u32 high1, high2, low, count; |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 149 | |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 150 | high_frame = pipe ? PIPEBFRAMEHIGH : PIPEAFRAMEHIGH; |
| 151 | low_frame = pipe ? PIPEBFRAMEPIXEL : PIPEAFRAMEPIXEL; |
| 152 | |
| 153 | if (!i915_pipe_enabled(dev, pipe)) { |
| 154 | DRM_ERROR("trying to get vblank count for disabled pipe %d\n", pipe); |
| 155 | return 0; |
| 156 | } |
| 157 | |
| 158 | /* |
| 159 | * High & low register fields aren't synchronized, so make sure |
| 160 | * we get a low value that's stable across two reads of the high |
| 161 | * register. |
| 162 | */ |
| 163 | do { |
| 164 | high1 = ((I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK) >> |
| 165 | PIPE_FRAME_HIGH_SHIFT); |
| 166 | low = ((I915_READ(low_frame) & PIPE_FRAME_LOW_MASK) >> |
| 167 | PIPE_FRAME_LOW_SHIFT); |
| 168 | high2 = ((I915_READ(high_frame) & PIPE_FRAME_HIGH_MASK) >> |
| 169 | PIPE_FRAME_HIGH_SHIFT); |
| 170 | } while (high1 != high2); |
| 171 | |
| 172 | count = (high1 << 8) | low; |
| 173 | |
| 174 | return count; |
| 175 | } |
| 176 | |
Jesse Barnes | 9880b7a | 2009-02-06 10:22:41 -0800 | [diff] [blame^] | 177 | u32 gm45_get_vblank_counter(struct drm_device *dev, int pipe) |
| 178 | { |
| 179 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 180 | int reg = pipe ? PIPEB_FRMCOUNT_GM45 : PIPEA_FRMCOUNT_GM45; |
| 181 | |
| 182 | if (!i915_pipe_enabled(dev, pipe)) { |
| 183 | DRM_ERROR("trying to get vblank count for disabled pipe %d\n", pipe); |
| 184 | return 0; |
| 185 | } |
| 186 | |
| 187 | return I915_READ(reg); |
| 188 | } |
| 189 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) |
| 191 | { |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame] | 192 | struct drm_device *dev = (struct drm_device *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 194 | struct drm_i915_master_private *master_priv; |
Eric Anholt | cdfbc41 | 2008-11-04 15:50:30 -0800 | [diff] [blame] | 195 | u32 iir, new_iir; |
| 196 | u32 pipea_stats, pipeb_stats; |
Keith Packard | 05eff84 | 2008-11-19 14:03:05 -0800 | [diff] [blame] | 197 | u32 vblank_status; |
| 198 | u32 vblank_enable; |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 199 | int vblank = 0; |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 200 | unsigned long irqflags; |
Keith Packard | 05eff84 | 2008-11-19 14:03:05 -0800 | [diff] [blame] | 201 | int irq_received; |
| 202 | int ret = IRQ_NONE; |
Dave Airlie | af6061a | 2008-05-07 12:15:39 +1000 | [diff] [blame] | 203 | |
Eric Anholt | 630681d | 2008-10-06 15:14:12 -0700 | [diff] [blame] | 204 | atomic_inc(&dev_priv->irq_received); |
| 205 | |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 206 | iir = I915_READ(IIR); |
Dave Airlie | af6061a | 2008-05-07 12:15:39 +1000 | [diff] [blame] | 207 | |
Keith Packard | 05eff84 | 2008-11-19 14:03:05 -0800 | [diff] [blame] | 208 | if (IS_I965G(dev)) { |
| 209 | vblank_status = I915_START_VBLANK_INTERRUPT_STATUS; |
| 210 | vblank_enable = PIPE_START_VBLANK_INTERRUPT_ENABLE; |
| 211 | } else { |
| 212 | vblank_status = I915_VBLANK_INTERRUPT_STATUS; |
| 213 | vblank_enable = I915_VBLANK_INTERRUPT_ENABLE; |
| 214 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | |
Keith Packard | 05eff84 | 2008-11-19 14:03:05 -0800 | [diff] [blame] | 216 | for (;;) { |
| 217 | irq_received = iir != 0; |
| 218 | |
| 219 | /* Can't rely on pipestat interrupt bit in iir as it might |
| 220 | * have been cleared after the pipestat interrupt was received. |
| 221 | * It doesn't set the bit in iir again, but it still produces |
| 222 | * interrupts (for non-MSI). |
| 223 | */ |
| 224 | spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags); |
| 225 | pipea_stats = I915_READ(PIPEASTAT); |
| 226 | pipeb_stats = I915_READ(PIPEBSTAT); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 227 | |
Eric Anholt | cdfbc41 | 2008-11-04 15:50:30 -0800 | [diff] [blame] | 228 | /* |
| 229 | * Clear the PIPE(A|B)STAT regs before the IIR |
| 230 | */ |
Keith Packard | 05eff84 | 2008-11-19 14:03:05 -0800 | [diff] [blame] | 231 | if (pipea_stats & 0x8000ffff) { |
Eric Anholt | cdfbc41 | 2008-11-04 15:50:30 -0800 | [diff] [blame] | 232 | I915_WRITE(PIPEASTAT, pipea_stats); |
Keith Packard | 05eff84 | 2008-11-19 14:03:05 -0800 | [diff] [blame] | 233 | irq_received = 1; |
Eric Anholt | cdfbc41 | 2008-11-04 15:50:30 -0800 | [diff] [blame] | 234 | } |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 235 | |
Keith Packard | 05eff84 | 2008-11-19 14:03:05 -0800 | [diff] [blame] | 236 | if (pipeb_stats & 0x8000ffff) { |
Eric Anholt | cdfbc41 | 2008-11-04 15:50:30 -0800 | [diff] [blame] | 237 | I915_WRITE(PIPEBSTAT, pipeb_stats); |
Keith Packard | 05eff84 | 2008-11-19 14:03:05 -0800 | [diff] [blame] | 238 | irq_received = 1; |
Eric Anholt | cdfbc41 | 2008-11-04 15:50:30 -0800 | [diff] [blame] | 239 | } |
Keith Packard | 05eff84 | 2008-11-19 14:03:05 -0800 | [diff] [blame] | 240 | spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags); |
| 241 | |
| 242 | if (!irq_received) |
| 243 | break; |
| 244 | |
| 245 | ret = IRQ_HANDLED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | |
Eric Anholt | cdfbc41 | 2008-11-04 15:50:30 -0800 | [diff] [blame] | 247 | I915_WRITE(IIR, iir); |
| 248 | new_iir = I915_READ(IIR); /* Flush posted writes */ |
Matthew Garrett | 8ee1c3d | 2008-08-05 19:37:25 +0100 | [diff] [blame] | 249 | |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 250 | if (dev->primary->master) { |
| 251 | master_priv = dev->primary->master->driver_priv; |
| 252 | if (master_priv->sarea_priv) |
| 253 | master_priv->sarea_priv->last_dispatch = |
| 254 | READ_BREADCRUMB(dev_priv); |
| 255 | } |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 256 | |
Eric Anholt | cdfbc41 | 2008-11-04 15:50:30 -0800 | [diff] [blame] | 257 | if (iir & I915_USER_INTERRUPT) { |
| 258 | dev_priv->mm.irq_gem_seqno = i915_get_gem_seqno(dev); |
| 259 | DRM_WAKEUP(&dev_priv->irq_queue); |
| 260 | } |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 261 | |
Keith Packard | 05eff84 | 2008-11-19 14:03:05 -0800 | [diff] [blame] | 262 | if (pipea_stats & vblank_status) { |
Eric Anholt | cdfbc41 | 2008-11-04 15:50:30 -0800 | [diff] [blame] | 263 | vblank++; |
| 264 | drm_handle_vblank(dev, 0); |
| 265 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 266 | |
Keith Packard | 05eff84 | 2008-11-19 14:03:05 -0800 | [diff] [blame] | 267 | if (pipeb_stats & vblank_status) { |
Eric Anholt | cdfbc41 | 2008-11-04 15:50:30 -0800 | [diff] [blame] | 268 | vblank++; |
| 269 | drm_handle_vblank(dev, 1); |
| 270 | } |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 271 | |
Eric Anholt | cdfbc41 | 2008-11-04 15:50:30 -0800 | [diff] [blame] | 272 | if ((pipeb_stats & I915_LEGACY_BLC_EVENT_STATUS) || |
| 273 | (iir & I915_ASLE_INTERRUPT)) |
| 274 | opregion_asle_intr(dev); |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 275 | |
Eric Anholt | cdfbc41 | 2008-11-04 15:50:30 -0800 | [diff] [blame] | 276 | /* With MSI, interrupts are only generated when iir |
| 277 | * transitions from zero to nonzero. If another bit got |
| 278 | * set while we were handling the existing iir bits, then |
| 279 | * we would never get another interrupt. |
| 280 | * |
| 281 | * This is fine on non-MSI as well, as if we hit this path |
| 282 | * we avoid exiting the interrupt handler only to generate |
| 283 | * another one. |
| 284 | * |
| 285 | * Note that for MSI this could cause a stray interrupt report |
| 286 | * if an interrupt landed in the time between writing IIR and |
| 287 | * the posting read. This should be rare enough to never |
| 288 | * trigger the 99% of 100,000 interrupts test for disabling |
| 289 | * stray interrupts. |
| 290 | */ |
| 291 | iir = new_iir; |
Keith Packard | 05eff84 | 2008-11-19 14:03:05 -0800 | [diff] [blame] | 292 | } |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 293 | |
Keith Packard | 05eff84 | 2008-11-19 14:03:05 -0800 | [diff] [blame] | 294 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | } |
| 296 | |
Dave Airlie | af6061a | 2008-05-07 12:15:39 +1000 | [diff] [blame] | 297 | static int i915_emit_irq(struct drm_device * dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | { |
| 299 | drm_i915_private_t *dev_priv = dev->dev_private; |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 300 | struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | RING_LOCALS; |
| 302 | |
| 303 | i915_kernel_lost_context(dev); |
| 304 | |
Márton Németh | 3e684ea | 2008-01-24 15:58:57 +1000 | [diff] [blame] | 305 | DRM_DEBUG("\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | |
Kristian Høgsberg | c99b058 | 2008-08-20 11:20:13 -0400 | [diff] [blame] | 307 | dev_priv->counter++; |
Alan Hourihane | c29b669 | 2006-08-12 16:29:24 +1000 | [diff] [blame] | 308 | if (dev_priv->counter > 0x7FFFFFFFUL) |
Kristian Høgsberg | c99b058 | 2008-08-20 11:20:13 -0400 | [diff] [blame] | 309 | dev_priv->counter = 1; |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 310 | if (master_priv->sarea_priv) |
| 311 | master_priv->sarea_priv->last_enqueue = dev_priv->counter; |
Alan Hourihane | c29b669 | 2006-08-12 16:29:24 +1000 | [diff] [blame] | 312 | |
Keith Packard | 0baf823 | 2008-11-08 11:44:14 +1000 | [diff] [blame] | 313 | BEGIN_LP_RING(4); |
Jesse Barnes | 585fb11 | 2008-07-29 11:54:06 -0700 | [diff] [blame] | 314 | OUT_RING(MI_STORE_DWORD_INDEX); |
Keith Packard | 0baf823 | 2008-11-08 11:44:14 +1000 | [diff] [blame] | 315 | OUT_RING(I915_BREADCRUMB_INDEX << MI_STORE_DWORD_INDEX_SHIFT); |
Alan Hourihane | c29b669 | 2006-08-12 16:29:24 +1000 | [diff] [blame] | 316 | OUT_RING(dev_priv->counter); |
Jesse Barnes | 585fb11 | 2008-07-29 11:54:06 -0700 | [diff] [blame] | 317 | OUT_RING(MI_USER_INTERRUPT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | ADVANCE_LP_RING(); |
Dave Airlie | bc5f452 | 2007-11-05 12:50:58 +1000 | [diff] [blame] | 319 | |
Alan Hourihane | c29b669 | 2006-08-12 16:29:24 +1000 | [diff] [blame] | 320 | return dev_priv->counter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | } |
| 322 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 323 | void i915_user_irq_get(struct drm_device *dev) |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 324 | { |
| 325 | 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] | 326 | unsigned long irqflags; |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 327 | |
Keith Packard | e9d21d7 | 2008-10-16 11:31:38 -0700 | [diff] [blame] | 328 | spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags); |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 329 | if (dev->irq_enabled && (++dev_priv->user_irq_refcount == 1)) |
| 330 | i915_enable_irq(dev_priv, I915_USER_INTERRUPT); |
Keith Packard | e9d21d7 | 2008-10-16 11:31:38 -0700 | [diff] [blame] | 331 | spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags); |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 332 | } |
| 333 | |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 334 | void i915_user_irq_put(struct drm_device *dev) |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 335 | { |
| 336 | 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] | 337 | unsigned long irqflags; |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 338 | |
Keith Packard | e9d21d7 | 2008-10-16 11:31:38 -0700 | [diff] [blame] | 339 | spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags); |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 340 | BUG_ON(dev->irq_enabled && dev_priv->user_irq_refcount <= 0); |
| 341 | if (dev->irq_enabled && (--dev_priv->user_irq_refcount == 0)) |
| 342 | i915_disable_irq(dev_priv, I915_USER_INTERRUPT); |
Keith Packard | e9d21d7 | 2008-10-16 11:31:38 -0700 | [diff] [blame] | 343 | spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags); |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 344 | } |
| 345 | |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame] | 346 | static int i915_wait_irq(struct drm_device * dev, int irq_nr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | { |
| 348 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 349 | struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | int ret = 0; |
| 351 | |
Márton Németh | 3e684ea | 2008-01-24 15:58:57 +1000 | [diff] [blame] | 352 | DRM_DEBUG("irq_nr=%d breadcrumb=%d\n", irq_nr, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | READ_BREADCRUMB(dev_priv)); |
| 354 | |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 355 | if (READ_BREADCRUMB(dev_priv) >= irq_nr) { |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 356 | if (master_priv->sarea_priv) |
| 357 | master_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | return 0; |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 359 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | |
Dave Airlie | 7c1c287 | 2008-11-28 14:22:24 +1000 | [diff] [blame] | 361 | if (master_priv->sarea_priv) |
| 362 | master_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 364 | i915_user_irq_get(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | DRM_WAIT_ON(ret, dev_priv->irq_queue, 3 * DRM_HZ, |
| 366 | READ_BREADCRUMB(dev_priv) >= irq_nr); |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 367 | i915_user_irq_put(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | |
Eric Anholt | 20caafa | 2007-08-25 19:22:43 +1000 | [diff] [blame] | 369 | if (ret == -EBUSY) { |
Márton Németh | 3e684ea | 2008-01-24 15:58:57 +1000 | [diff] [blame] | 370 | DRM_ERROR("EBUSY -- rec: %d emitted: %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | READ_BREADCRUMB(dev_priv), (int)dev_priv->counter); |
| 372 | } |
| 373 | |
Dave Airlie | af6061a | 2008-05-07 12:15:39 +1000 | [diff] [blame] | 374 | return ret; |
| 375 | } |
| 376 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | /* Needs the lock as it touches the ring. |
| 378 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 379 | int i915_irq_emit(struct drm_device *dev, void *data, |
| 380 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 383 | drm_i915_irq_emit_t *emit = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | int result; |
| 385 | |
Eric Anholt | 546b097 | 2008-09-01 16:45:29 -0700 | [diff] [blame] | 386 | RING_LOCK_TEST_WITH_RETURN(dev, file_priv); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | |
| 388 | if (!dev_priv) { |
Márton Németh | 3e684ea | 2008-01-24 15:58:57 +1000 | [diff] [blame] | 389 | DRM_ERROR("called with no initialization\n"); |
Eric Anholt | 20caafa | 2007-08-25 19:22:43 +1000 | [diff] [blame] | 390 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | } |
Eric Anholt | 546b097 | 2008-09-01 16:45:29 -0700 | [diff] [blame] | 392 | mutex_lock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | result = i915_emit_irq(dev); |
Eric Anholt | 546b097 | 2008-09-01 16:45:29 -0700 | [diff] [blame] | 394 | mutex_unlock(&dev->struct_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 396 | if (DRM_COPY_TO_USER(emit->irq_seq, &result, sizeof(int))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | DRM_ERROR("copy_to_user\n"); |
Eric Anholt | 20caafa | 2007-08-25 19:22:43 +1000 | [diff] [blame] | 398 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | } |
| 400 | |
| 401 | return 0; |
| 402 | } |
| 403 | |
| 404 | /* Doesn't need the hardware lock. |
| 405 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 406 | int i915_irq_wait(struct drm_device *dev, void *data, |
| 407 | struct drm_file *file_priv) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 410 | drm_i915_irq_wait_t *irqwait = data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | |
| 412 | if (!dev_priv) { |
Márton Németh | 3e684ea | 2008-01-24 15:58:57 +1000 | [diff] [blame] | 413 | DRM_ERROR("called with no initialization\n"); |
Eric Anholt | 20caafa | 2007-08-25 19:22:43 +1000 | [diff] [blame] | 414 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | } |
| 416 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 417 | return i915_wait_irq(dev, irqwait->irq_seq); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | } |
| 419 | |
Keith Packard | 42f52ef | 2008-10-18 19:39:29 -0700 | [diff] [blame] | 420 | /* Called from drm generic code, passed 'crtc' which |
| 421 | * we use as a pipe index |
| 422 | */ |
| 423 | int i915_enable_vblank(struct drm_device *dev, int pipe) |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 424 | { |
| 425 | 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] | 426 | unsigned long irqflags; |
Jesse Barnes | 71e0ffa | 2009-01-08 10:42:15 -0800 | [diff] [blame] | 427 | int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF; |
| 428 | u32 pipeconf; |
| 429 | |
| 430 | pipeconf = I915_READ(pipeconf_reg); |
| 431 | if (!(pipeconf & PIPEACONF_ENABLE)) |
| 432 | return -EINVAL; |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 433 | |
Keith Packard | e9d21d7 | 2008-10-16 11:31:38 -0700 | [diff] [blame] | 434 | spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags); |
Keith Packard | e9d21d7 | 2008-10-16 11:31:38 -0700 | [diff] [blame] | 435 | if (IS_I965G(dev)) |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 436 | i915_enable_pipestat(dev_priv, pipe, |
| 437 | PIPE_START_VBLANK_INTERRUPT_ENABLE); |
Keith Packard | e9d21d7 | 2008-10-16 11:31:38 -0700 | [diff] [blame] | 438 | else |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 439 | i915_enable_pipestat(dev_priv, pipe, |
| 440 | PIPE_VBLANK_INTERRUPT_ENABLE); |
Keith Packard | e9d21d7 | 2008-10-16 11:31:38 -0700 | [diff] [blame] | 441 | spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags); |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 442 | return 0; |
| 443 | } |
| 444 | |
Keith Packard | 42f52ef | 2008-10-18 19:39:29 -0700 | [diff] [blame] | 445 | /* Called from drm generic code, passed 'crtc' which |
| 446 | * we use as a pipe index |
| 447 | */ |
| 448 | void i915_disable_vblank(struct drm_device *dev, int pipe) |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 449 | { |
| 450 | 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] | 451 | unsigned long irqflags; |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 452 | |
Keith Packard | e9d21d7 | 2008-10-16 11:31:38 -0700 | [diff] [blame] | 453 | spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags); |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 454 | i915_disable_pipestat(dev_priv, pipe, |
| 455 | PIPE_VBLANK_INTERRUPT_ENABLE | |
| 456 | PIPE_START_VBLANK_INTERRUPT_ENABLE); |
Keith Packard | e9d21d7 | 2008-10-16 11:31:38 -0700 | [diff] [blame] | 457 | spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags); |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 458 | } |
| 459 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 460 | void i915_enable_interrupt (struct drm_device *dev) |
| 461 | { |
| 462 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 463 | opregion_enable_asle(dev); |
| 464 | dev_priv->irq_enabled = 1; |
| 465 | } |
| 466 | |
| 467 | |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 468 | /* Set the vblank monitor pipe |
| 469 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 470 | int i915_vblank_pipe_set(struct drm_device *dev, void *data, |
| 471 | struct drm_file *file_priv) |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 472 | { |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 473 | drm_i915_private_t *dev_priv = dev->dev_private; |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 474 | |
| 475 | if (!dev_priv) { |
Márton Németh | 3e684ea | 2008-01-24 15:58:57 +1000 | [diff] [blame] | 476 | DRM_ERROR("called with no initialization\n"); |
Eric Anholt | 20caafa | 2007-08-25 19:22:43 +1000 | [diff] [blame] | 477 | return -EINVAL; |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 478 | } |
| 479 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 5b51694 | 2006-10-25 00:08:23 +1000 | [diff] [blame] | 480 | return 0; |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 481 | } |
| 482 | |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 483 | int i915_vblank_pipe_get(struct drm_device *dev, void *data, |
| 484 | struct drm_file *file_priv) |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 485 | { |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 486 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 487 | drm_i915_vblank_pipe_t *pipe = data; |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 488 | |
| 489 | if (!dev_priv) { |
Márton Németh | 3e684ea | 2008-01-24 15:58:57 +1000 | [diff] [blame] | 490 | DRM_ERROR("called with no initialization\n"); |
Eric Anholt | 20caafa | 2007-08-25 19:22:43 +1000 | [diff] [blame] | 491 | return -EINVAL; |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 492 | } |
| 493 | |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 494 | pipe->pipe = DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B; |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 495 | |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 496 | return 0; |
| 497 | } |
| 498 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 499 | /** |
| 500 | * Schedule buffer swap at given vertical blank. |
| 501 | */ |
Eric Anholt | c153f45 | 2007-09-03 12:06:45 +1000 | [diff] [blame] | 502 | int i915_vblank_swap(struct drm_device *dev, void *data, |
| 503 | struct drm_file *file_priv) |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 504 | { |
Eric Anholt | bd95e0a | 2008-11-04 12:01:24 -0800 | [diff] [blame] | 505 | /* The delayed swap mechanism was fundamentally racy, and has been |
| 506 | * removed. The model was that the client requested a delayed flip/swap |
| 507 | * from the kernel, then waited for vblank before continuing to perform |
| 508 | * rendering. The problem was that the kernel might wake the client |
| 509 | * up before it dispatched the vblank swap (since the lock has to be |
| 510 | * held while touching the ringbuffer), in which case the client would |
| 511 | * clear and start the next frame before the swap occurred, and |
| 512 | * flicker would occur in addition to likely missing the vblank. |
| 513 | * |
| 514 | * In the absence of this ioctl, userland falls back to a correct path |
| 515 | * of waiting for a vblank, then dispatching the swap on its own. |
| 516 | * Context switching to userland and back is plenty fast enough for |
| 517 | * meeting the requirements of vblank swapping. |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 518 | */ |
Eric Anholt | bd95e0a | 2008-11-04 12:01:24 -0800 | [diff] [blame] | 519 | return -EINVAL; |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 520 | } |
| 521 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | /* drm_dma.h hooks |
| 523 | */ |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame] | 524 | void i915_driver_irq_preinstall(struct drm_device * dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | { |
| 526 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 527 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 528 | atomic_set(&dev_priv->irq_received, 0); |
| 529 | |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 530 | I915_WRITE(HWSTAM, 0xeffe); |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 531 | I915_WRITE(PIPEASTAT, 0); |
| 532 | I915_WRITE(PIPEBSTAT, 0); |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 533 | I915_WRITE(IMR, 0xffffffff); |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 534 | I915_WRITE(IER, 0x0); |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 535 | (void) I915_READ(IER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | } |
| 537 | |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 538 | int i915_driver_irq_postinstall(struct drm_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | { |
| 540 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 541 | |
| 542 | dev_priv->vblank_pipe = DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B; |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 543 | |
| 544 | dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */ |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 545 | |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 546 | /* Unmask the interrupts that we always want on. */ |
| 547 | dev_priv->irq_mask_reg = ~I915_INTERRUPT_ENABLE_FIX; |
Matthew Garrett | 8ee1c3d | 2008-08-05 19:37:25 +0100 | [diff] [blame] | 548 | |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 549 | dev_priv->pipestat[0] = 0; |
| 550 | dev_priv->pipestat[1] = 0; |
| 551 | |
| 552 | /* Disable pipe interrupt enables, clear pending pipe status */ |
| 553 | I915_WRITE(PIPEASTAT, I915_READ(PIPEASTAT) & 0x8000ffff); |
| 554 | I915_WRITE(PIPEBSTAT, I915_READ(PIPEBSTAT) & 0x8000ffff); |
| 555 | /* Clear pending interrupt status */ |
| 556 | I915_WRITE(IIR, I915_READ(IIR)); |
| 557 | |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 558 | I915_WRITE(IER, I915_INTERRUPT_ENABLE_MASK); |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 559 | I915_WRITE(IMR, dev_priv->irq_mask_reg); |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 560 | (void) I915_READ(IER); |
| 561 | |
Matthew Garrett | 8ee1c3d | 2008-08-05 19:37:25 +0100 | [diff] [blame] | 562 | opregion_enable_asle(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | DRM_INIT_WAITQUEUE(&dev_priv->irq_queue); |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 564 | |
| 565 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | } |
| 567 | |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame] | 568 | void i915_driver_irq_uninstall(struct drm_device * dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | { |
| 570 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
Dave Airlie | 91e3738 | 2006-02-18 15:17:04 +1100 | [diff] [blame] | 571 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | if (!dev_priv) |
| 573 | return; |
| 574 | |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 575 | dev_priv->vblank_pipe = 0; |
| 576 | |
| 577 | I915_WRITE(HWSTAM, 0xffffffff); |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 578 | I915_WRITE(PIPEASTAT, 0); |
| 579 | I915_WRITE(PIPEBSTAT, 0); |
Jesse Barnes | 0a3e67a | 2008-09-30 12:14:26 -0700 | [diff] [blame] | 580 | I915_WRITE(IMR, 0xffffffff); |
Eric Anholt | ed4cb41 | 2008-07-29 12:10:39 -0700 | [diff] [blame] | 581 | I915_WRITE(IER, 0x0); |
Dave Airlie | 91e3738 | 2006-02-18 15:17:04 +1100 | [diff] [blame] | 582 | |
Keith Packard | 7c46358 | 2008-11-04 02:03:27 -0800 | [diff] [blame] | 583 | I915_WRITE(PIPEASTAT, I915_READ(PIPEASTAT) & 0x8000ffff); |
| 584 | I915_WRITE(PIPEBSTAT, I915_READ(PIPEBSTAT) & 0x8000ffff); |
| 585 | I915_WRITE(IIR, I915_READ(IIR)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | } |