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" |
| 33 | |
Dave Airlie | 0d6aa60 | 2006-01-02 20:14:23 +1100 | [diff] [blame] | 34 | #define USER_INT_FLAG (1<<1) |
| 35 | #define VSYNC_PIPEB_FLAG (1<<5) |
| 36 | #define VSYNC_PIPEA_FLAG (1<<7) |
| 37 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #define MAX_NOPID ((u32)~0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 40 | /** |
| 41 | * Emit blits for scheduled buffer swaps. |
| 42 | * |
| 43 | * This function will be called with the HW lock held. |
| 44 | */ |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame^] | 45 | static void i915_vblank_tasklet(struct drm_device *dev) |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 46 | { |
| 47 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
=?utf-8?q?Michel_D=C3=A4nzer?= | a0b136b | 2006-10-25 00:12:52 +1000 | [diff] [blame] | 48 | unsigned long irqflags; |
=?utf-8?q?Michel_D=C3=A4nzer?= | 3188a24 | 2006-12-11 18:32:27 +1100 | [diff] [blame] | 49 | struct list_head *list, *tmp, hits, *hit; |
| 50 | int nhits, nrects, slice[2], upper[2], lower[2], i; |
| 51 | unsigned counter[2] = { atomic_read(&dev->vbl_received), |
| 52 | atomic_read(&dev->vbl_received2) }; |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 53 | struct drm_drawable_info *drw; |
=?utf-8?q?Michel_D=C3=A4nzer?= | 3188a24 | 2006-12-11 18:32:27 +1100 | [diff] [blame] | 54 | drm_i915_sarea_t *sarea_priv = dev_priv->sarea_priv; |
| 55 | u32 cpp = dev_priv->cpp; |
| 56 | u32 cmd = (cpp == 4) ? (XY_SRC_COPY_BLT_CMD | |
| 57 | XY_SRC_COPY_BLT_WRITE_ALPHA | |
| 58 | XY_SRC_COPY_BLT_WRITE_RGB) |
| 59 | : XY_SRC_COPY_BLT_CMD; |
| 60 | u32 pitchropcpp = (sarea_priv->pitch * cpp) | (0xcc << 16) | |
| 61 | (cpp << 23) | (1 << 24); |
| 62 | RING_LOCALS; |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 63 | |
| 64 | DRM_DEBUG("\n"); |
| 65 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 3188a24 | 2006-12-11 18:32:27 +1100 | [diff] [blame] | 66 | INIT_LIST_HEAD(&hits); |
| 67 | |
| 68 | nhits = nrects = 0; |
| 69 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 70 | spin_lock_irqsave(&dev_priv->swaps_lock, irqflags); |
| 71 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 3188a24 | 2006-12-11 18:32:27 +1100 | [diff] [blame] | 72 | /* Find buffer swaps scheduled for this vertical blank */ |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 73 | list_for_each_safe(list, tmp, &dev_priv->vbl_swaps.head) { |
| 74 | drm_i915_vbl_swap_t *vbl_swap = |
| 75 | list_entry(list, drm_i915_vbl_swap_t, head); |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 76 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 3188a24 | 2006-12-11 18:32:27 +1100 | [diff] [blame] | 77 | if ((counter[vbl_swap->pipe] - vbl_swap->sequence) > (1<<23)) |
| 78 | continue; |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 79 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 3188a24 | 2006-12-11 18:32:27 +1100 | [diff] [blame] | 80 | list_del(list); |
| 81 | dev_priv->swaps_pending--; |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 82 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 3188a24 | 2006-12-11 18:32:27 +1100 | [diff] [blame] | 83 | spin_unlock(&dev_priv->swaps_lock); |
| 84 | spin_lock(&dev->drw_lock); |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 85 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 3188a24 | 2006-12-11 18:32:27 +1100 | [diff] [blame] | 86 | drw = drm_get_drawable_info(dev, vbl_swap->drw_id); |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 87 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 3188a24 | 2006-12-11 18:32:27 +1100 | [diff] [blame] | 88 | if (!drw) { |
| 89 | spin_unlock(&dev->drw_lock); |
| 90 | drm_free(vbl_swap, sizeof(*vbl_swap), DRM_MEM_DRIVER); |
| 91 | spin_lock(&dev_priv->swaps_lock); |
| 92 | continue; |
| 93 | } |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 94 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 3188a24 | 2006-12-11 18:32:27 +1100 | [diff] [blame] | 95 | list_for_each(hit, &hits) { |
| 96 | drm_i915_vbl_swap_t *swap_cmp = |
| 97 | list_entry(hit, drm_i915_vbl_swap_t, head); |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 98 | struct drm_drawable_info *drw_cmp = |
=?utf-8?q?Michel_D=C3=A4nzer?= | 3188a24 | 2006-12-11 18:32:27 +1100 | [diff] [blame] | 99 | drm_get_drawable_info(dev, swap_cmp->drw_id); |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 100 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 3188a24 | 2006-12-11 18:32:27 +1100 | [diff] [blame] | 101 | if (drw_cmp && |
| 102 | drw_cmp->rects[0].y1 > drw->rects[0].y1) { |
| 103 | list_add_tail(list, hit); |
| 104 | break; |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | spin_unlock(&dev->drw_lock); |
| 109 | |
| 110 | /* List of hits was empty, or we reached the end of it */ |
| 111 | if (hit == &hits) |
| 112 | list_add_tail(list, hits.prev); |
| 113 | |
| 114 | nhits++; |
| 115 | |
| 116 | spin_lock(&dev_priv->swaps_lock); |
| 117 | } |
| 118 | |
| 119 | if (nhits == 0) { |
| 120 | spin_unlock_irqrestore(&dev_priv->swaps_lock, irqflags); |
| 121 | return; |
| 122 | } |
| 123 | |
| 124 | spin_unlock(&dev_priv->swaps_lock); |
| 125 | |
| 126 | i915_kernel_lost_context(dev); |
| 127 | |
| 128 | BEGIN_LP_RING(6); |
| 129 | |
| 130 | OUT_RING(GFX_OP_DRAWRECT_INFO); |
| 131 | OUT_RING(0); |
| 132 | OUT_RING(0); |
| 133 | OUT_RING(sarea_priv->width | sarea_priv->height << 16); |
| 134 | OUT_RING(sarea_priv->width | sarea_priv->height << 16); |
| 135 | OUT_RING(0); |
| 136 | |
| 137 | ADVANCE_LP_RING(); |
| 138 | |
| 139 | sarea_priv->ctxOwner = DRM_KERNEL_CONTEXT; |
| 140 | |
| 141 | upper[0] = upper[1] = 0; |
| 142 | slice[0] = max(sarea_priv->pipeA_h / nhits, 1); |
| 143 | slice[1] = max(sarea_priv->pipeB_h / nhits, 1); |
| 144 | lower[0] = sarea_priv->pipeA_y + slice[0]; |
| 145 | lower[1] = sarea_priv->pipeB_y + slice[0]; |
| 146 | |
| 147 | spin_lock(&dev->drw_lock); |
| 148 | |
| 149 | /* Emit blits for buffer swaps, partitioning both outputs into as many |
| 150 | * slices as there are buffer swaps scheduled in order to avoid tearing |
| 151 | * (based on the assumption that a single buffer swap would always |
| 152 | * complete before scanout starts). |
| 153 | */ |
| 154 | for (i = 0; i++ < nhits; |
| 155 | upper[0] = lower[0], lower[0] += slice[0], |
| 156 | upper[1] = lower[1], lower[1] += slice[1]) { |
| 157 | if (i == nhits) |
| 158 | lower[0] = lower[1] = sarea_priv->height; |
| 159 | |
| 160 | list_for_each(hit, &hits) { |
| 161 | drm_i915_vbl_swap_t *swap_hit = |
| 162 | list_entry(hit, drm_i915_vbl_swap_t, head); |
Dave Airlie | c60ce62 | 2007-07-11 15:27:12 +1000 | [diff] [blame] | 163 | struct drm_clip_rect *rect; |
=?utf-8?q?Michel_D=C3=A4nzer?= | 3188a24 | 2006-12-11 18:32:27 +1100 | [diff] [blame] | 164 | int num_rects, pipe; |
| 165 | unsigned short top, bottom; |
| 166 | |
| 167 | drw = drm_get_drawable_info(dev, swap_hit->drw_id); |
| 168 | |
| 169 | if (!drw) |
| 170 | continue; |
| 171 | |
| 172 | rect = drw->rects; |
| 173 | pipe = swap_hit->pipe; |
| 174 | top = upper[pipe]; |
| 175 | bottom = lower[pipe]; |
| 176 | |
| 177 | for (num_rects = drw->num_rects; num_rects--; rect++) { |
| 178 | int y1 = max(rect->y1, top); |
| 179 | int y2 = min(rect->y2, bottom); |
| 180 | |
| 181 | if (y1 >= y2) |
| 182 | continue; |
| 183 | |
| 184 | BEGIN_LP_RING(8); |
| 185 | |
| 186 | OUT_RING(cmd); |
| 187 | OUT_RING(pitchropcpp); |
| 188 | OUT_RING((y1 << 16) | rect->x1); |
| 189 | OUT_RING((y2 << 16) | rect->x2); |
| 190 | OUT_RING(sarea_priv->front_offset); |
| 191 | OUT_RING((y1 << 16) | rect->x1); |
| 192 | OUT_RING(pitchropcpp & 0xffff); |
| 193 | OUT_RING(sarea_priv->back_offset); |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 194 | |
| 195 | ADVANCE_LP_RING(); |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 196 | } |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 197 | } |
| 198 | } |
| 199 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 3188a24 | 2006-12-11 18:32:27 +1100 | [diff] [blame] | 200 | spin_unlock_irqrestore(&dev->drw_lock, irqflags); |
| 201 | |
| 202 | list_for_each_safe(hit, tmp, &hits) { |
| 203 | drm_i915_vbl_swap_t *swap_hit = |
| 204 | list_entry(hit, drm_i915_vbl_swap_t, head); |
| 205 | |
| 206 | list_del(hit); |
| 207 | |
| 208 | drm_free(swap_hit, sizeof(*swap_hit), DRM_MEM_DRIVER); |
| 209 | } |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 210 | } |
| 211 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS) |
| 213 | { |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame^] | 214 | struct drm_device *dev = (struct drm_device *) arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 216 | u16 temp; |
| 217 | |
| 218 | temp = I915_READ16(I915REG_INT_IDENTITY_R); |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 219 | |
| 220 | temp &= (USER_INT_FLAG | VSYNC_PIPEA_FLAG | VSYNC_PIPEB_FLAG); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | |
| 222 | DRM_DEBUG("%s flag=%08x\n", __FUNCTION__, temp); |
| 223 | |
| 224 | if (temp == 0) |
| 225 | return IRQ_NONE; |
| 226 | |
| 227 | I915_WRITE16(I915REG_INT_IDENTITY_R, temp); |
Dave Airlie | 0d6aa60 | 2006-01-02 20:14:23 +1100 | [diff] [blame] | 228 | |
Dave Airlie | 6e5fca5 | 2006-03-20 18:34:29 +1100 | [diff] [blame] | 229 | dev_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv); |
| 230 | |
Dave Airlie | 0d6aa60 | 2006-01-02 20:14:23 +1100 | [diff] [blame] | 231 | if (temp & USER_INT_FLAG) |
| 232 | DRM_WAKEUP(&dev_priv->irq_queue); |
| 233 | |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 234 | if (temp & (VSYNC_PIPEA_FLAG | VSYNC_PIPEB_FLAG)) { |
=?utf-8?q?Michel_D=C3=A4nzer?= | 2228ed6 | 2006-10-25 01:05:09 +1000 | [diff] [blame] | 235 | int vblank_pipe = dev_priv->vblank_pipe; |
| 236 | |
| 237 | if ((vblank_pipe & |
=?utf-8?q?Michel_D=C3=A4nzer?= | 68815ba | 2006-10-24 22:28:51 +1000 | [diff] [blame] | 238 | (DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B)) |
| 239 | == (DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B)) { |
| 240 | if (temp & VSYNC_PIPEA_FLAG) |
| 241 | atomic_inc(&dev->vbl_received); |
| 242 | if (temp & VSYNC_PIPEB_FLAG) |
| 243 | atomic_inc(&dev->vbl_received2); |
=?utf-8?q?Michel_D=C3=A4nzer?= | 2228ed6 | 2006-10-25 01:05:09 +1000 | [diff] [blame] | 244 | } else if (((temp & VSYNC_PIPEA_FLAG) && |
| 245 | (vblank_pipe & DRM_I915_VBLANK_PIPE_A)) || |
| 246 | ((temp & VSYNC_PIPEB_FLAG) && |
| 247 | (vblank_pipe & DRM_I915_VBLANK_PIPE_B))) |
=?utf-8?q?Michel_D=C3=A4nzer?= | 68815ba | 2006-10-24 22:28:51 +1000 | [diff] [blame] | 248 | atomic_inc(&dev->vbl_received); |
| 249 | |
Dave Airlie | 0d6aa60 | 2006-01-02 20:14:23 +1100 | [diff] [blame] | 250 | DRM_WAKEUP(&dev->vbl_queue); |
| 251 | drm_vbl_send_signals(dev); |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 252 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 2228ed6 | 2006-10-25 01:05:09 +1000 | [diff] [blame] | 253 | if (dev_priv->swaps_pending > 0) |
| 254 | drm_locked_tasklet(dev, i915_vblank_tasklet); |
Dave Airlie | 0d6aa60 | 2006-01-02 20:14:23 +1100 | [diff] [blame] | 255 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | |
| 257 | return IRQ_HANDLED; |
| 258 | } |
| 259 | |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame^] | 260 | static int i915_emit_irq(struct drm_device * dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | { |
| 262 | drm_i915_private_t *dev_priv = dev->dev_private; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | RING_LOCALS; |
| 264 | |
| 265 | i915_kernel_lost_context(dev); |
| 266 | |
| 267 | DRM_DEBUG("%s\n", __FUNCTION__); |
| 268 | |
Alan Hourihane | c29b669 | 2006-08-12 16:29:24 +1000 | [diff] [blame] | 269 | dev_priv->sarea_priv->last_enqueue = ++dev_priv->counter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | |
Alan Hourihane | c29b669 | 2006-08-12 16:29:24 +1000 | [diff] [blame] | 271 | if (dev_priv->counter > 0x7FFFFFFFUL) |
| 272 | dev_priv->sarea_priv->last_enqueue = dev_priv->counter = 1; |
| 273 | |
| 274 | BEGIN_LP_RING(6); |
| 275 | OUT_RING(CMD_STORE_DWORD_IDX); |
| 276 | OUT_RING(20); |
| 277 | OUT_RING(dev_priv->counter); |
| 278 | OUT_RING(0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | OUT_RING(0); |
| 280 | OUT_RING(GFX_OP_USER_INTERRUPT); |
| 281 | ADVANCE_LP_RING(); |
Alan Hourihane | c29b669 | 2006-08-12 16:29:24 +1000 | [diff] [blame] | 282 | |
| 283 | return dev_priv->counter; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | } |
| 285 | |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame^] | 286 | static int i915_wait_irq(struct drm_device * dev, int irq_nr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | { |
| 288 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 289 | int ret = 0; |
| 290 | |
| 291 | DRM_DEBUG("%s irq_nr=%d breadcrumb=%d\n", __FUNCTION__, irq_nr, |
| 292 | READ_BREADCRUMB(dev_priv)); |
| 293 | |
| 294 | if (READ_BREADCRUMB(dev_priv) >= irq_nr) |
| 295 | return 0; |
| 296 | |
| 297 | dev_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT; |
| 298 | |
| 299 | DRM_WAIT_ON(ret, dev_priv->irq_queue, 3 * DRM_HZ, |
| 300 | READ_BREADCRUMB(dev_priv) >= irq_nr); |
| 301 | |
| 302 | if (ret == DRM_ERR(EBUSY)) { |
| 303 | DRM_ERROR("%s: EBUSY -- rec: %d emitted: %d\n", |
| 304 | __FUNCTION__, |
| 305 | READ_BREADCRUMB(dev_priv), (int)dev_priv->counter); |
| 306 | } |
| 307 | |
| 308 | dev_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv); |
| 309 | return ret; |
| 310 | } |
| 311 | |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame^] | 312 | static int i915_driver_vblank_do_wait(struct drm_device *dev, unsigned int *sequence, |
=?utf-8?q?Michel_D=C3=A4nzer?= | 68815ba | 2006-10-24 22:28:51 +1000 | [diff] [blame] | 313 | atomic_t *counter) |
Dave Airlie | 0d6aa60 | 2006-01-02 20:14:23 +1100 | [diff] [blame] | 314 | { |
| 315 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 316 | unsigned int cur_vblank; |
| 317 | int ret = 0; |
| 318 | |
| 319 | if (!dev_priv) { |
| 320 | DRM_ERROR("%s called with no initialization\n", __FUNCTION__); |
| 321 | return DRM_ERR(EINVAL); |
| 322 | } |
| 323 | |
| 324 | DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ, |
=?utf-8?q?Michel_D=C3=A4nzer?= | 68815ba | 2006-10-24 22:28:51 +1000 | [diff] [blame] | 325 | (((cur_vblank = atomic_read(counter)) |
Dave Airlie | 0d6aa60 | 2006-01-02 20:14:23 +1100 | [diff] [blame] | 326 | - *sequence) <= (1<<23))); |
| 327 | |
| 328 | *sequence = cur_vblank; |
| 329 | |
| 330 | return ret; |
| 331 | } |
| 332 | |
| 333 | |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame^] | 334 | int i915_driver_vblank_wait(struct drm_device *dev, unsigned int *sequence) |
=?utf-8?q?Michel_D=C3=A4nzer?= | 68815ba | 2006-10-24 22:28:51 +1000 | [diff] [blame] | 335 | { |
| 336 | return i915_driver_vblank_do_wait(dev, sequence, &dev->vbl_received); |
| 337 | } |
| 338 | |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame^] | 339 | int i915_driver_vblank_wait2(struct drm_device *dev, unsigned int *sequence) |
=?utf-8?q?Michel_D=C3=A4nzer?= | 68815ba | 2006-10-24 22:28:51 +1000 | [diff] [blame] | 340 | { |
| 341 | return i915_driver_vblank_do_wait(dev, sequence, &dev->vbl_received2); |
| 342 | } |
| 343 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | /* Needs the lock as it touches the ring. |
| 345 | */ |
| 346 | int i915_irq_emit(DRM_IOCTL_ARGS) |
| 347 | { |
| 348 | DRM_DEVICE; |
| 349 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 350 | drm_i915_irq_emit_t emit; |
| 351 | int result; |
| 352 | |
| 353 | LOCK_TEST_WITH_RETURN(dev, filp); |
| 354 | |
| 355 | if (!dev_priv) { |
| 356 | DRM_ERROR("%s called with no initialization\n", __FUNCTION__); |
| 357 | return DRM_ERR(EINVAL); |
| 358 | } |
| 359 | |
| 360 | DRM_COPY_FROM_USER_IOCTL(emit, (drm_i915_irq_emit_t __user *) data, |
| 361 | sizeof(emit)); |
| 362 | |
| 363 | result = i915_emit_irq(dev); |
| 364 | |
| 365 | if (DRM_COPY_TO_USER(emit.irq_seq, &result, sizeof(int))) { |
| 366 | DRM_ERROR("copy_to_user\n"); |
| 367 | return DRM_ERR(EFAULT); |
| 368 | } |
| 369 | |
| 370 | return 0; |
| 371 | } |
| 372 | |
| 373 | /* Doesn't need the hardware lock. |
| 374 | */ |
| 375 | int i915_irq_wait(DRM_IOCTL_ARGS) |
| 376 | { |
| 377 | DRM_DEVICE; |
| 378 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 379 | drm_i915_irq_wait_t irqwait; |
| 380 | |
| 381 | if (!dev_priv) { |
| 382 | DRM_ERROR("%s called with no initialization\n", __FUNCTION__); |
| 383 | return DRM_ERR(EINVAL); |
| 384 | } |
| 385 | |
| 386 | DRM_COPY_FROM_USER_IOCTL(irqwait, (drm_i915_irq_wait_t __user *) data, |
| 387 | sizeof(irqwait)); |
| 388 | |
| 389 | return i915_wait_irq(dev, irqwait.irq_seq); |
| 390 | } |
| 391 | |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame^] | 392 | static void i915_enable_interrupt (struct drm_device *dev) |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 393 | { |
| 394 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 395 | u16 flag; |
| 396 | |
| 397 | flag = 0; |
| 398 | if (dev_priv->vblank_pipe & DRM_I915_VBLANK_PIPE_A) |
| 399 | flag |= VSYNC_PIPEA_FLAG; |
| 400 | if (dev_priv->vblank_pipe & DRM_I915_VBLANK_PIPE_B) |
| 401 | flag |= VSYNC_PIPEB_FLAG; |
=?utf-8?q?Michel_D=C3=A4nzer?= | 5b51694 | 2006-10-25 00:08:23 +1000 | [diff] [blame] | 402 | |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 403 | I915_WRITE16(I915REG_INT_ENABLE_R, USER_INT_FLAG | flag); |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 404 | } |
| 405 | |
| 406 | /* Set the vblank monitor pipe |
| 407 | */ |
| 408 | int i915_vblank_pipe_set(DRM_IOCTL_ARGS) |
| 409 | { |
| 410 | DRM_DEVICE; |
| 411 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 412 | drm_i915_vblank_pipe_t pipe; |
| 413 | |
| 414 | if (!dev_priv) { |
| 415 | DRM_ERROR("%s called with no initialization\n", __FUNCTION__); |
| 416 | return DRM_ERR(EINVAL); |
| 417 | } |
| 418 | |
| 419 | DRM_COPY_FROM_USER_IOCTL(pipe, (drm_i915_vblank_pipe_t __user *) data, |
| 420 | sizeof(pipe)); |
| 421 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 5b51694 | 2006-10-25 00:08:23 +1000 | [diff] [blame] | 422 | if (pipe.pipe & ~(DRM_I915_VBLANK_PIPE_A|DRM_I915_VBLANK_PIPE_B)) { |
| 423 | DRM_ERROR("%s called with invalid pipe 0x%x\n", |
| 424 | __FUNCTION__, pipe.pipe); |
| 425 | return DRM_ERR(EINVAL); |
| 426 | } |
| 427 | |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 428 | dev_priv->vblank_pipe = pipe.pipe; |
=?utf-8?q?Michel_D=C3=A4nzer?= | 5b51694 | 2006-10-25 00:08:23 +1000 | [diff] [blame] | 429 | |
| 430 | i915_enable_interrupt (dev); |
| 431 | |
| 432 | return 0; |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 433 | } |
| 434 | |
| 435 | int i915_vblank_pipe_get(DRM_IOCTL_ARGS) |
| 436 | { |
| 437 | DRM_DEVICE; |
| 438 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 439 | drm_i915_vblank_pipe_t pipe; |
| 440 | u16 flag; |
| 441 | |
| 442 | if (!dev_priv) { |
| 443 | DRM_ERROR("%s called with no initialization\n", __FUNCTION__); |
| 444 | return DRM_ERR(EINVAL); |
| 445 | } |
| 446 | |
| 447 | flag = I915_READ(I915REG_INT_ENABLE_R); |
| 448 | pipe.pipe = 0; |
| 449 | if (flag & VSYNC_PIPEA_FLAG) |
| 450 | pipe.pipe |= DRM_I915_VBLANK_PIPE_A; |
| 451 | if (flag & VSYNC_PIPEB_FLAG) |
| 452 | pipe.pipe |= DRM_I915_VBLANK_PIPE_B; |
| 453 | DRM_COPY_TO_USER_IOCTL((drm_i915_vblank_pipe_t __user *) data, pipe, |
| 454 | sizeof(pipe)); |
| 455 | return 0; |
| 456 | } |
| 457 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 458 | /** |
| 459 | * Schedule buffer swap at given vertical blank. |
| 460 | */ |
| 461 | int i915_vblank_swap(DRM_IOCTL_ARGS) |
| 462 | { |
| 463 | DRM_DEVICE; |
| 464 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 465 | drm_i915_vblank_swap_t swap; |
| 466 | drm_i915_vbl_swap_t *vbl_swap; |
=?utf-8?q?Michel_D=C3=A4nzer?= | a0b136b | 2006-10-25 00:12:52 +1000 | [diff] [blame] | 467 | unsigned int pipe, seqtype, curseq; |
| 468 | unsigned long irqflags; |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 469 | struct list_head *list; |
| 470 | |
| 471 | if (!dev_priv) { |
| 472 | DRM_ERROR("%s called with no initialization\n", __func__); |
| 473 | return DRM_ERR(EINVAL); |
| 474 | } |
| 475 | |
| 476 | if (dev_priv->sarea_priv->rotation) { |
| 477 | DRM_DEBUG("Rotation not supported\n"); |
| 478 | return DRM_ERR(EINVAL); |
| 479 | } |
| 480 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 481 | DRM_COPY_FROM_USER_IOCTL(swap, (drm_i915_vblank_swap_t __user *) data, |
| 482 | sizeof(swap)); |
| 483 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 541f29a | 2006-10-24 23:38:54 +1000 | [diff] [blame] | 484 | if (swap.seqtype & ~(_DRM_VBLANK_RELATIVE | _DRM_VBLANK_ABSOLUTE | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 2228ed6 | 2006-10-25 01:05:09 +1000 | [diff] [blame] | 485 | _DRM_VBLANK_SECONDARY | _DRM_VBLANK_NEXTONMISS)) { |
=?utf-8?q?Michel_D=C3=A4nzer?= | 541f29a | 2006-10-24 23:38:54 +1000 | [diff] [blame] | 486 | DRM_ERROR("Invalid sequence type 0x%x\n", swap.seqtype); |
| 487 | return DRM_ERR(EINVAL); |
| 488 | } |
| 489 | |
| 490 | pipe = (swap.seqtype & _DRM_VBLANK_SECONDARY) ? 1 : 0; |
| 491 | |
| 492 | seqtype = swap.seqtype & (_DRM_VBLANK_RELATIVE | _DRM_VBLANK_ABSOLUTE); |
| 493 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 541f29a | 2006-10-24 23:38:54 +1000 | [diff] [blame] | 494 | if (!(dev_priv->vblank_pipe & (1 << pipe))) { |
| 495 | DRM_ERROR("Invalid pipe %d\n", pipe); |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 496 | return DRM_ERR(EINVAL); |
| 497 | } |
| 498 | |
| 499 | spin_lock_irqsave(&dev->drw_lock, irqflags); |
| 500 | |
| 501 | if (!drm_get_drawable_info(dev, swap.drawable)) { |
| 502 | spin_unlock_irqrestore(&dev->drw_lock, irqflags); |
=?utf-8?q?Michel_D=C3=A4nzer?= | eac681b | 2007-01-08 20:38:34 +1100 | [diff] [blame] | 503 | DRM_DEBUG("Invalid drawable ID %d\n", swap.drawable); |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 504 | return DRM_ERR(EINVAL); |
| 505 | } |
| 506 | |
| 507 | spin_unlock_irqrestore(&dev->drw_lock, irqflags); |
| 508 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 541f29a | 2006-10-24 23:38:54 +1000 | [diff] [blame] | 509 | curseq = atomic_read(pipe ? &dev->vbl_received2 : &dev->vbl_received); |
| 510 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 2228ed6 | 2006-10-25 01:05:09 +1000 | [diff] [blame] | 511 | if (seqtype == _DRM_VBLANK_RELATIVE) |
=?utf-8?q?Michel_D=C3=A4nzer?= | 541f29a | 2006-10-24 23:38:54 +1000 | [diff] [blame] | 512 | swap.sequence += curseq; |
=?utf-8?q?Michel_D=C3=A4nzer?= | 2228ed6 | 2006-10-25 01:05:09 +1000 | [diff] [blame] | 513 | |
| 514 | if ((curseq - swap.sequence) <= (1<<23)) { |
| 515 | if (swap.seqtype & _DRM_VBLANK_NEXTONMISS) { |
| 516 | swap.sequence = curseq + 1; |
| 517 | } else { |
=?utf-8?q?Michel_D=C3=A4nzer?= | 541f29a | 2006-10-24 23:38:54 +1000 | [diff] [blame] | 518 | DRM_DEBUG("Missed target sequence\n"); |
| 519 | return DRM_ERR(EINVAL); |
| 520 | } |
=?utf-8?q?Michel_D=C3=A4nzer?= | 541f29a | 2006-10-24 23:38:54 +1000 | [diff] [blame] | 521 | } |
| 522 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 2228ed6 | 2006-10-25 01:05:09 +1000 | [diff] [blame] | 523 | spin_lock_irqsave(&dev_priv->swaps_lock, irqflags); |
| 524 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 525 | list_for_each(list, &dev_priv->vbl_swaps.head) { |
| 526 | vbl_swap = list_entry(list, drm_i915_vbl_swap_t, head); |
| 527 | |
| 528 | if (vbl_swap->drw_id == swap.drawable && |
=?utf-8?q?Michel_D=C3=A4nzer?= | 541f29a | 2006-10-24 23:38:54 +1000 | [diff] [blame] | 529 | vbl_swap->pipe == pipe && |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 530 | vbl_swap->sequence == swap.sequence) { |
| 531 | spin_unlock_irqrestore(&dev_priv->swaps_lock, irqflags); |
| 532 | DRM_DEBUG("Already scheduled\n"); |
| 533 | return 0; |
| 534 | } |
| 535 | } |
| 536 | |
| 537 | spin_unlock_irqrestore(&dev_priv->swaps_lock, irqflags); |
| 538 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 21fa60e | 2006-10-25 00:10:59 +1000 | [diff] [blame] | 539 | if (dev_priv->swaps_pending >= 100) { |
| 540 | DRM_DEBUG("Too many swaps queued\n"); |
| 541 | return DRM_ERR(EBUSY); |
| 542 | } |
| 543 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 544 | vbl_swap = drm_calloc(1, sizeof(vbl_swap), DRM_MEM_DRIVER); |
| 545 | |
| 546 | if (!vbl_swap) { |
| 547 | DRM_ERROR("Failed to allocate memory to queue swap\n"); |
| 548 | return DRM_ERR(ENOMEM); |
| 549 | } |
| 550 | |
| 551 | DRM_DEBUG("\n"); |
| 552 | |
| 553 | vbl_swap->drw_id = swap.drawable; |
=?utf-8?q?Michel_D=C3=A4nzer?= | 541f29a | 2006-10-24 23:38:54 +1000 | [diff] [blame] | 554 | vbl_swap->pipe = pipe; |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 555 | vbl_swap->sequence = swap.sequence; |
| 556 | |
| 557 | spin_lock_irqsave(&dev_priv->swaps_lock, irqflags); |
| 558 | |
| 559 | list_add_tail((struct list_head *)vbl_swap, &dev_priv->vbl_swaps.head); |
| 560 | dev_priv->swaps_pending++; |
| 561 | |
| 562 | spin_unlock_irqrestore(&dev_priv->swaps_lock, irqflags); |
| 563 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 541f29a | 2006-10-24 23:38:54 +1000 | [diff] [blame] | 564 | DRM_COPY_TO_USER_IOCTL((drm_i915_vblank_swap_t __user *) data, swap, |
| 565 | sizeof(swap)); |
| 566 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 567 | return 0; |
| 568 | } |
| 569 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | /* drm_dma.h hooks |
| 571 | */ |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame^] | 572 | void i915_driver_irq_preinstall(struct drm_device * dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | { |
| 574 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 575 | |
| 576 | I915_WRITE16(I915REG_HWSTAM, 0xfffe); |
| 577 | I915_WRITE16(I915REG_INT_MASK_R, 0x0); |
| 578 | I915_WRITE16(I915REG_INT_ENABLE_R, 0x0); |
| 579 | } |
| 580 | |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame^] | 581 | void i915_driver_irq_postinstall(struct drm_device * dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | { |
| 583 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; |
| 584 | |
Thomas Gleixner | a6399bd | 2007-05-26 05:56:14 +1000 | [diff] [blame] | 585 | spin_lock_init(&dev_priv->swaps_lock); |
=?utf-8?q?Michel_D=C3=A4nzer?= | a6b54f3 | 2006-10-24 23:37:43 +1000 | [diff] [blame] | 586 | INIT_LIST_HEAD(&dev_priv->vbl_swaps.head); |
| 587 | dev_priv->swaps_pending = 0; |
| 588 | |
=?utf-8?q?Michel_D=C3=A4nzer?= | 5b51694 | 2006-10-25 00:08:23 +1000 | [diff] [blame] | 589 | if (!dev_priv->vblank_pipe) |
| 590 | dev_priv->vblank_pipe = DRM_I915_VBLANK_PIPE_A; |
Dave Airlie | 702880f | 2006-06-24 17:07:34 +1000 | [diff] [blame] | 591 | i915_enable_interrupt(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | DRM_INIT_WAITQUEUE(&dev_priv->irq_queue); |
| 593 | } |
| 594 | |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame^] | 595 | void i915_driver_irq_uninstall(struct drm_device * dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | { |
| 597 | 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] | 598 | u16 temp; |
| 599 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | if (!dev_priv) |
| 601 | return; |
| 602 | |
| 603 | I915_WRITE16(I915REG_HWSTAM, 0xffff); |
| 604 | I915_WRITE16(I915REG_INT_MASK_R, 0xffff); |
| 605 | I915_WRITE16(I915REG_INT_ENABLE_R, 0x0); |
Dave Airlie | 91e3738 | 2006-02-18 15:17:04 +1100 | [diff] [blame] | 606 | |
| 607 | temp = I915_READ16(I915REG_INT_IDENTITY_R); |
| 608 | I915_WRITE16(I915REG_INT_IDENTITY_R, temp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | } |