Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2008 Intel Corporation |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 21 | * IN THE SOFTWARE. |
| 22 | * |
| 23 | * Authors: |
| 24 | * Eric Anholt <eric@anholt.net> |
| 25 | * |
| 26 | */ |
| 27 | |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 28 | #include <drm/drmP.h> |
| 29 | #include <drm/i915_drm.h> |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 30 | #include "i915_drv.h" |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 31 | #include "i915_trace.h" |
Jesse Barnes | 652c393 | 2009-08-17 13:31:43 -0700 | [diff] [blame] | 32 | #include "intel_drv.h" |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 33 | #include <linux/shmem_fs.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 34 | #include <linux/slab.h> |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 35 | #include <linux/swap.h> |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 36 | #include <linux/pci.h> |
Daniel Vetter | 1286ff7 | 2012-05-10 15:25:09 +0200 | [diff] [blame] | 37 | #include <linux/dma-buf.h> |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 38 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 39 | static void i915_gem_object_flush_gtt_write_domain(struct drm_i915_gem_object *obj); |
| 40 | static void i915_gem_object_flush_cpu_write_domain(struct drm_i915_gem_object *obj); |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 41 | static __must_check int i915_gem_object_bind_to_gtt(struct drm_i915_gem_object *obj, |
| 42 | unsigned alignment, |
Chris Wilson | 86a1ee2 | 2012-08-11 15:41:04 +0100 | [diff] [blame] | 43 | bool map_and_fenceable, |
| 44 | bool nonblocking); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 45 | static int i915_gem_phys_pwrite(struct drm_device *dev, |
| 46 | struct drm_i915_gem_object *obj, |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 47 | struct drm_i915_gem_pwrite *args, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 48 | struct drm_file *file); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 49 | |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 50 | static void i915_gem_write_fence(struct drm_device *dev, int reg, |
| 51 | struct drm_i915_gem_object *obj); |
| 52 | static void i915_gem_object_update_fence(struct drm_i915_gem_object *obj, |
| 53 | struct drm_i915_fence_reg *fence, |
| 54 | bool enable); |
| 55 | |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 56 | static int i915_gem_inactive_shrink(struct shrinker *shrinker, |
Ying Han | 1495f23 | 2011-05-24 17:12:27 -0700 | [diff] [blame] | 57 | struct shrink_control *sc); |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 58 | static long i915_gem_purge(struct drm_i915_private *dev_priv, long target); |
| 59 | static void i915_gem_shrink_all(struct drm_i915_private *dev_priv); |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 60 | static void i915_gem_object_truncate(struct drm_i915_gem_object *obj); |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 61 | |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 62 | static inline void i915_gem_object_fence_lost(struct drm_i915_gem_object *obj) |
| 63 | { |
| 64 | if (obj->tiling_mode) |
| 65 | i915_gem_release_mmap(obj); |
| 66 | |
| 67 | /* As we do not have an associated fence register, we will force |
| 68 | * a tiling change if we ever need to acquire one. |
| 69 | */ |
Chris Wilson | 5d82e3e | 2012-04-21 16:23:23 +0100 | [diff] [blame] | 70 | obj->fence_dirty = false; |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 71 | obj->fence_reg = I915_FENCE_REG_NONE; |
| 72 | } |
| 73 | |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 74 | /* some bookkeeping */ |
| 75 | static void i915_gem_info_add_obj(struct drm_i915_private *dev_priv, |
| 76 | size_t size) |
| 77 | { |
| 78 | dev_priv->mm.object_count++; |
| 79 | dev_priv->mm.object_memory += size; |
| 80 | } |
| 81 | |
| 82 | static void i915_gem_info_remove_obj(struct drm_i915_private *dev_priv, |
| 83 | size_t size) |
| 84 | { |
| 85 | dev_priv->mm.object_count--; |
| 86 | dev_priv->mm.object_memory -= size; |
| 87 | } |
| 88 | |
Chris Wilson | 21dd373 | 2011-01-26 15:55:56 +0000 | [diff] [blame] | 89 | static int |
| 90 | i915_gem_wait_for_error(struct drm_device *dev) |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 91 | { |
| 92 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 93 | struct completion *x = &dev_priv->error_completion; |
| 94 | unsigned long flags; |
| 95 | int ret; |
| 96 | |
| 97 | if (!atomic_read(&dev_priv->mm.wedged)) |
| 98 | return 0; |
| 99 | |
Daniel Vetter | 0a6759c | 2012-07-04 22:18:41 +0200 | [diff] [blame] | 100 | /* |
| 101 | * Only wait 10 seconds for the gpu reset to complete to avoid hanging |
| 102 | * userspace. If it takes that long something really bad is going on and |
| 103 | * we should simply try to bail out and fail as gracefully as possible. |
| 104 | */ |
| 105 | ret = wait_for_completion_interruptible_timeout(x, 10*HZ); |
| 106 | if (ret == 0) { |
| 107 | DRM_ERROR("Timed out waiting for the gpu reset to complete\n"); |
| 108 | return -EIO; |
| 109 | } else if (ret < 0) { |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 110 | return ret; |
Daniel Vetter | 0a6759c | 2012-07-04 22:18:41 +0200 | [diff] [blame] | 111 | } |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 112 | |
Chris Wilson | 21dd373 | 2011-01-26 15:55:56 +0000 | [diff] [blame] | 113 | if (atomic_read(&dev_priv->mm.wedged)) { |
| 114 | /* GPU is hung, bump the completion count to account for |
| 115 | * the token we just consumed so that we never hit zero and |
| 116 | * end up waiting upon a subsequent completion event that |
| 117 | * will never happen. |
| 118 | */ |
| 119 | spin_lock_irqsave(&x->wait.lock, flags); |
| 120 | x->done++; |
| 121 | spin_unlock_irqrestore(&x->wait.lock, flags); |
| 122 | } |
| 123 | return 0; |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 124 | } |
| 125 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 126 | int i915_mutex_lock_interruptible(struct drm_device *dev) |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 127 | { |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 128 | int ret; |
| 129 | |
Chris Wilson | 21dd373 | 2011-01-26 15:55:56 +0000 | [diff] [blame] | 130 | ret = i915_gem_wait_for_error(dev); |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 131 | if (ret) |
| 132 | return ret; |
| 133 | |
| 134 | ret = mutex_lock_interruptible(&dev->struct_mutex); |
| 135 | if (ret) |
| 136 | return ret; |
| 137 | |
Chris Wilson | 23bc598 | 2010-09-29 16:10:57 +0100 | [diff] [blame] | 138 | WARN_ON(i915_verify_lists(dev)); |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 139 | return 0; |
| 140 | } |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 141 | |
Chris Wilson | 7d1c480 | 2010-08-07 21:45:03 +0100 | [diff] [blame] | 142 | static inline bool |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 143 | i915_gem_object_is_inactive(struct drm_i915_gem_object *obj) |
Chris Wilson | 7d1c480 | 2010-08-07 21:45:03 +0100 | [diff] [blame] | 144 | { |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 145 | return obj->gtt_space && !obj->active; |
Chris Wilson | 7d1c480 | 2010-08-07 21:45:03 +0100 | [diff] [blame] | 146 | } |
| 147 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 148 | int |
| 149 | i915_gem_init_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 150 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 151 | { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 152 | struct drm_i915_gem_init *args = data; |
Chris Wilson | 2021746 | 2010-11-23 15:26:33 +0000 | [diff] [blame] | 153 | |
Daniel Vetter | 7bb6fb8 | 2012-04-24 08:22:52 +0200 | [diff] [blame] | 154 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
| 155 | return -ENODEV; |
| 156 | |
Chris Wilson | 2021746 | 2010-11-23 15:26:33 +0000 | [diff] [blame] | 157 | if (args->gtt_start >= args->gtt_end || |
| 158 | (args->gtt_end | args->gtt_start) & (PAGE_SIZE - 1)) |
| 159 | return -EINVAL; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 160 | |
Daniel Vetter | f534bc0 | 2012-03-26 22:37:04 +0200 | [diff] [blame] | 161 | /* GEM with user mode setting was never supported on ilk and later. */ |
| 162 | if (INTEL_INFO(dev)->gen >= 5) |
| 163 | return -ENODEV; |
| 164 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 165 | mutex_lock(&dev->struct_mutex); |
Daniel Vetter | 644ec02 | 2012-03-26 09:45:40 +0200 | [diff] [blame] | 166 | i915_gem_init_global_gtt(dev, args->gtt_start, |
| 167 | args->gtt_end, args->gtt_end); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 168 | mutex_unlock(&dev->struct_mutex); |
| 169 | |
Chris Wilson | 2021746 | 2010-11-23 15:26:33 +0000 | [diff] [blame] | 170 | return 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 171 | } |
| 172 | |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 173 | int |
| 174 | i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 175 | struct drm_file *file) |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 176 | { |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 177 | struct drm_i915_private *dev_priv = dev->dev_private; |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 178 | struct drm_i915_gem_get_aperture *args = data; |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 179 | struct drm_i915_gem_object *obj; |
| 180 | size_t pinned; |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 181 | |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 182 | pinned = 0; |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 183 | mutex_lock(&dev->struct_mutex); |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 184 | list_for_each_entry(obj, &dev_priv->mm.bound_list, gtt_list) |
Chris Wilson | 1b50247 | 2012-04-24 15:47:30 +0100 | [diff] [blame] | 185 | if (obj->pin_count) |
| 186 | pinned += obj->gtt_space->size; |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 187 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 188 | |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 189 | args->aper_size = dev_priv->mm.gtt_total; |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 190 | args->aper_available_size = args->aper_size - pinned; |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 191 | |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 192 | return 0; |
| 193 | } |
| 194 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 195 | static int |
| 196 | i915_gem_create(struct drm_file *file, |
| 197 | struct drm_device *dev, |
| 198 | uint64_t size, |
| 199 | uint32_t *handle_p) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 200 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 201 | struct drm_i915_gem_object *obj; |
Pekka Paalanen | a1a2d1d | 2009-08-23 12:40:55 +0300 | [diff] [blame] | 202 | int ret; |
| 203 | u32 handle; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 204 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 205 | size = roundup(size, PAGE_SIZE); |
Chris Wilson | 8ffc024 | 2011-09-14 14:14:28 +0200 | [diff] [blame] | 206 | if (size == 0) |
| 207 | return -EINVAL; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 208 | |
| 209 | /* Allocate the new object */ |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 210 | obj = i915_gem_alloc_object(dev, size); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 211 | if (obj == NULL) |
| 212 | return -ENOMEM; |
| 213 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 214 | ret = drm_gem_handle_create(file, &obj->base, &handle); |
Chris Wilson | 1dfd975 | 2010-09-06 14:44:14 +0100 | [diff] [blame] | 215 | if (ret) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 216 | drm_gem_object_release(&obj->base); |
| 217 | i915_gem_info_remove_obj(dev->dev_private, obj->base.size); |
Chris Wilson | 202f2fe | 2010-10-14 13:20:40 +0100 | [diff] [blame] | 218 | kfree(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 219 | return ret; |
Chris Wilson | 1dfd975 | 2010-09-06 14:44:14 +0100 | [diff] [blame] | 220 | } |
| 221 | |
Chris Wilson | 202f2fe | 2010-10-14 13:20:40 +0100 | [diff] [blame] | 222 | /* drop reference from allocate - handle holds it now */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 223 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 202f2fe | 2010-10-14 13:20:40 +0100 | [diff] [blame] | 224 | trace_i915_gem_object_create(obj); |
| 225 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 226 | *handle_p = handle; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 227 | return 0; |
| 228 | } |
| 229 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 230 | int |
| 231 | i915_gem_dumb_create(struct drm_file *file, |
| 232 | struct drm_device *dev, |
| 233 | struct drm_mode_create_dumb *args) |
| 234 | { |
| 235 | /* have to work out size/pitch and return them */ |
Chris Wilson | ed0291f | 2011-03-19 08:21:45 +0000 | [diff] [blame] | 236 | args->pitch = ALIGN(args->width * ((args->bpp + 7) / 8), 64); |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 237 | args->size = args->pitch * args->height; |
| 238 | return i915_gem_create(file, dev, |
| 239 | args->size, &args->handle); |
| 240 | } |
| 241 | |
| 242 | int i915_gem_dumb_destroy(struct drm_file *file, |
| 243 | struct drm_device *dev, |
| 244 | uint32_t handle) |
| 245 | { |
| 246 | return drm_gem_handle_delete(file, handle); |
| 247 | } |
| 248 | |
| 249 | /** |
| 250 | * Creates a new mm object and returns a handle to it. |
| 251 | */ |
| 252 | int |
| 253 | i915_gem_create_ioctl(struct drm_device *dev, void *data, |
| 254 | struct drm_file *file) |
| 255 | { |
| 256 | struct drm_i915_gem_create *args = data; |
Daniel Vetter | 63ed2cb | 2012-04-23 16:50:50 +0200 | [diff] [blame] | 257 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 258 | return i915_gem_create(file, dev, |
| 259 | args->size, &args->handle); |
| 260 | } |
| 261 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 262 | static int i915_gem_object_needs_bit17_swizzle(struct drm_i915_gem_object *obj) |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 263 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 264 | drm_i915_private_t *dev_priv = obj->base.dev->dev_private; |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 265 | |
| 266 | return dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_9_10_17 && |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 267 | obj->tiling_mode != I915_TILING_NONE; |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 268 | } |
| 269 | |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 270 | static inline int |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 271 | __copy_to_user_swizzled(char __user *cpu_vaddr, |
| 272 | const char *gpu_vaddr, int gpu_offset, |
| 273 | int length) |
| 274 | { |
| 275 | int ret, cpu_offset = 0; |
| 276 | |
| 277 | while (length > 0) { |
| 278 | int cacheline_end = ALIGN(gpu_offset + 1, 64); |
| 279 | int this_length = min(cacheline_end - gpu_offset, length); |
| 280 | int swizzled_gpu_offset = gpu_offset ^ 64; |
| 281 | |
| 282 | ret = __copy_to_user(cpu_vaddr + cpu_offset, |
| 283 | gpu_vaddr + swizzled_gpu_offset, |
| 284 | this_length); |
| 285 | if (ret) |
| 286 | return ret + length; |
| 287 | |
| 288 | cpu_offset += this_length; |
| 289 | gpu_offset += this_length; |
| 290 | length -= this_length; |
| 291 | } |
| 292 | |
| 293 | return 0; |
| 294 | } |
| 295 | |
| 296 | static inline int |
Ben Widawsky | 4f0c7cf | 2012-04-16 14:07:47 -0700 | [diff] [blame] | 297 | __copy_from_user_swizzled(char *gpu_vaddr, int gpu_offset, |
| 298 | const char __user *cpu_vaddr, |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 299 | int length) |
| 300 | { |
| 301 | int ret, cpu_offset = 0; |
| 302 | |
| 303 | while (length > 0) { |
| 304 | int cacheline_end = ALIGN(gpu_offset + 1, 64); |
| 305 | int this_length = min(cacheline_end - gpu_offset, length); |
| 306 | int swizzled_gpu_offset = gpu_offset ^ 64; |
| 307 | |
| 308 | ret = __copy_from_user(gpu_vaddr + swizzled_gpu_offset, |
| 309 | cpu_vaddr + cpu_offset, |
| 310 | this_length); |
| 311 | if (ret) |
| 312 | return ret + length; |
| 313 | |
| 314 | cpu_offset += this_length; |
| 315 | gpu_offset += this_length; |
| 316 | length -= this_length; |
| 317 | } |
| 318 | |
| 319 | return 0; |
| 320 | } |
| 321 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 322 | /* Per-page copy function for the shmem pread fastpath. |
| 323 | * Flushes invalid cachelines before reading the target if |
| 324 | * needs_clflush is set. */ |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 325 | static int |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 326 | shmem_pread_fast(struct page *page, int shmem_page_offset, int page_length, |
| 327 | char __user *user_data, |
| 328 | bool page_do_bit17_swizzling, bool needs_clflush) |
| 329 | { |
| 330 | char *vaddr; |
| 331 | int ret; |
| 332 | |
Daniel Vetter | e7e58eb | 2012-03-25 19:47:43 +0200 | [diff] [blame] | 333 | if (unlikely(page_do_bit17_swizzling)) |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 334 | return -EINVAL; |
| 335 | |
| 336 | vaddr = kmap_atomic(page); |
| 337 | if (needs_clflush) |
| 338 | drm_clflush_virt_range(vaddr + shmem_page_offset, |
| 339 | page_length); |
| 340 | ret = __copy_to_user_inatomic(user_data, |
| 341 | vaddr + shmem_page_offset, |
| 342 | page_length); |
| 343 | kunmap_atomic(vaddr); |
| 344 | |
Chris Wilson | f60d7f0 | 2012-09-04 21:02:56 +0100 | [diff] [blame] | 345 | return ret ? -EFAULT : 0; |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 346 | } |
| 347 | |
Daniel Vetter | 23c18c7 | 2012-03-25 19:47:42 +0200 | [diff] [blame] | 348 | static void |
| 349 | shmem_clflush_swizzled_range(char *addr, unsigned long length, |
| 350 | bool swizzled) |
| 351 | { |
Daniel Vetter | e7e58eb | 2012-03-25 19:47:43 +0200 | [diff] [blame] | 352 | if (unlikely(swizzled)) { |
Daniel Vetter | 23c18c7 | 2012-03-25 19:47:42 +0200 | [diff] [blame] | 353 | unsigned long start = (unsigned long) addr; |
| 354 | unsigned long end = (unsigned long) addr + length; |
| 355 | |
| 356 | /* For swizzling simply ensure that we always flush both |
| 357 | * channels. Lame, but simple and it works. Swizzled |
| 358 | * pwrite/pread is far from a hotpath - current userspace |
| 359 | * doesn't use it at all. */ |
| 360 | start = round_down(start, 128); |
| 361 | end = round_up(end, 128); |
| 362 | |
| 363 | drm_clflush_virt_range((void *)start, end - start); |
| 364 | } else { |
| 365 | drm_clflush_virt_range(addr, length); |
| 366 | } |
| 367 | |
| 368 | } |
| 369 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 370 | /* Only difference to the fast-path function is that this can handle bit17 |
| 371 | * and uses non-atomic copy and kmap functions. */ |
| 372 | static int |
| 373 | shmem_pread_slow(struct page *page, int shmem_page_offset, int page_length, |
| 374 | char __user *user_data, |
| 375 | bool page_do_bit17_swizzling, bool needs_clflush) |
| 376 | { |
| 377 | char *vaddr; |
| 378 | int ret; |
| 379 | |
| 380 | vaddr = kmap(page); |
| 381 | if (needs_clflush) |
Daniel Vetter | 23c18c7 | 2012-03-25 19:47:42 +0200 | [diff] [blame] | 382 | shmem_clflush_swizzled_range(vaddr + shmem_page_offset, |
| 383 | page_length, |
| 384 | page_do_bit17_swizzling); |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 385 | |
| 386 | if (page_do_bit17_swizzling) |
| 387 | ret = __copy_to_user_swizzled(user_data, |
| 388 | vaddr, shmem_page_offset, |
| 389 | page_length); |
| 390 | else |
| 391 | ret = __copy_to_user(user_data, |
| 392 | vaddr + shmem_page_offset, |
| 393 | page_length); |
| 394 | kunmap(page); |
| 395 | |
Chris Wilson | f60d7f0 | 2012-09-04 21:02:56 +0100 | [diff] [blame] | 396 | return ret ? - EFAULT : 0; |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 397 | } |
| 398 | |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 399 | static int |
Daniel Vetter | dbf7bff | 2012-03-25 19:47:29 +0200 | [diff] [blame] | 400 | i915_gem_shmem_pread(struct drm_device *dev, |
| 401 | struct drm_i915_gem_object *obj, |
| 402 | struct drm_i915_gem_pread *args, |
| 403 | struct drm_file *file) |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 404 | { |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 405 | char __user *user_data; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 406 | ssize_t remain; |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 407 | loff_t offset; |
Ben Widawsky | eb2c0c8 | 2012-02-15 14:42:43 +0100 | [diff] [blame] | 408 | int shmem_page_offset, page_length, ret = 0; |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 409 | int obj_do_bit17_swizzling, page_do_bit17_swizzling; |
Daniel Vetter | dbf7bff | 2012-03-25 19:47:29 +0200 | [diff] [blame] | 410 | int hit_slowpath = 0; |
Daniel Vetter | 96d79b5 | 2012-03-25 19:47:36 +0200 | [diff] [blame] | 411 | int prefaulted = 0; |
Daniel Vetter | 8489731 | 2012-03-25 19:47:31 +0200 | [diff] [blame] | 412 | int needs_clflush = 0; |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 413 | struct scatterlist *sg; |
| 414 | int i; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 415 | |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 416 | user_data = (char __user *) (uintptr_t) args->data_ptr; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 417 | remain = args->size; |
| 418 | |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 419 | obj_do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 420 | |
Daniel Vetter | 8489731 | 2012-03-25 19:47:31 +0200 | [diff] [blame] | 421 | if (!(obj->base.read_domains & I915_GEM_DOMAIN_CPU)) { |
| 422 | /* If we're not in the cpu read domain, set ourself into the gtt |
| 423 | * read domain and manually flush cachelines (if required). This |
| 424 | * optimizes for the case when the gpu will dirty the data |
| 425 | * anyway again before the next pread happens. */ |
| 426 | if (obj->cache_level == I915_CACHE_NONE) |
| 427 | needs_clflush = 1; |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 428 | if (obj->gtt_space) { |
| 429 | ret = i915_gem_object_set_to_gtt_domain(obj, false); |
| 430 | if (ret) |
| 431 | return ret; |
| 432 | } |
Daniel Vetter | 8489731 | 2012-03-25 19:47:31 +0200 | [diff] [blame] | 433 | } |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 434 | |
Chris Wilson | f60d7f0 | 2012-09-04 21:02:56 +0100 | [diff] [blame] | 435 | ret = i915_gem_object_get_pages(obj); |
| 436 | if (ret) |
| 437 | return ret; |
| 438 | |
| 439 | i915_gem_object_pin_pages(obj); |
| 440 | |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 441 | offset = args->offset; |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 442 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 443 | for_each_sg(obj->pages->sgl, sg, obj->pages->nents, i) { |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 444 | struct page *page; |
| 445 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 446 | if (i < offset >> PAGE_SHIFT) |
| 447 | continue; |
| 448 | |
| 449 | if (remain <= 0) |
| 450 | break; |
| 451 | |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 452 | /* Operation in this page |
| 453 | * |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 454 | * shmem_page_offset = offset within page in shmem file |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 455 | * page_length = bytes to copy for this page |
| 456 | */ |
Chris Wilson | c8cbbb8 | 2011-05-12 22:17:11 +0100 | [diff] [blame] | 457 | shmem_page_offset = offset_in_page(offset); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 458 | page_length = remain; |
| 459 | if ((shmem_page_offset + page_length) > PAGE_SIZE) |
| 460 | page_length = PAGE_SIZE - shmem_page_offset; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 461 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 462 | page = sg_page(sg); |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 463 | page_do_bit17_swizzling = obj_do_bit17_swizzling && |
| 464 | (page_to_phys(page) & (1 << 17)) != 0; |
| 465 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 466 | ret = shmem_pread_fast(page, shmem_page_offset, page_length, |
| 467 | user_data, page_do_bit17_swizzling, |
| 468 | needs_clflush); |
| 469 | if (ret == 0) |
| 470 | goto next_page; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 471 | |
Daniel Vetter | dbf7bff | 2012-03-25 19:47:29 +0200 | [diff] [blame] | 472 | hit_slowpath = 1; |
Daniel Vetter | dbf7bff | 2012-03-25 19:47:29 +0200 | [diff] [blame] | 473 | mutex_unlock(&dev->struct_mutex); |
| 474 | |
Daniel Vetter | 96d79b5 | 2012-03-25 19:47:36 +0200 | [diff] [blame] | 475 | if (!prefaulted) { |
Daniel Vetter | f56f821 | 2012-03-25 19:47:41 +0200 | [diff] [blame] | 476 | ret = fault_in_multipages_writeable(user_data, remain); |
Daniel Vetter | 96d79b5 | 2012-03-25 19:47:36 +0200 | [diff] [blame] | 477 | /* Userspace is tricking us, but we've already clobbered |
| 478 | * its pages with the prefault and promised to write the |
| 479 | * data up to the first fault. Hence ignore any errors |
| 480 | * and just continue. */ |
| 481 | (void)ret; |
| 482 | prefaulted = 1; |
| 483 | } |
| 484 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 485 | ret = shmem_pread_slow(page, shmem_page_offset, page_length, |
| 486 | user_data, page_do_bit17_swizzling, |
| 487 | needs_clflush); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 488 | |
Daniel Vetter | dbf7bff | 2012-03-25 19:47:29 +0200 | [diff] [blame] | 489 | mutex_lock(&dev->struct_mutex); |
Chris Wilson | f60d7f0 | 2012-09-04 21:02:56 +0100 | [diff] [blame] | 490 | |
Daniel Vetter | dbf7bff | 2012-03-25 19:47:29 +0200 | [diff] [blame] | 491 | next_page: |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 492 | mark_page_accessed(page); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 493 | |
Chris Wilson | f60d7f0 | 2012-09-04 21:02:56 +0100 | [diff] [blame] | 494 | if (ret) |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 495 | goto out; |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 496 | |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 497 | remain -= page_length; |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 498 | user_data += page_length; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 499 | offset += page_length; |
| 500 | } |
| 501 | |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 502 | out: |
Chris Wilson | f60d7f0 | 2012-09-04 21:02:56 +0100 | [diff] [blame] | 503 | i915_gem_object_unpin_pages(obj); |
| 504 | |
Daniel Vetter | dbf7bff | 2012-03-25 19:47:29 +0200 | [diff] [blame] | 505 | if (hit_slowpath) { |
| 506 | /* Fixup: Kill any reinstated backing storage pages */ |
| 507 | if (obj->madv == __I915_MADV_PURGED) |
| 508 | i915_gem_object_truncate(obj); |
| 509 | } |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 510 | |
| 511 | return ret; |
| 512 | } |
| 513 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 514 | /** |
| 515 | * Reads data from the object referenced by handle. |
| 516 | * |
| 517 | * On error, the contents of *data are undefined. |
| 518 | */ |
| 519 | int |
| 520 | i915_gem_pread_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 521 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 522 | { |
| 523 | struct drm_i915_gem_pread *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 524 | struct drm_i915_gem_object *obj; |
Chris Wilson | 35b62a8 | 2010-09-26 20:23:38 +0100 | [diff] [blame] | 525 | int ret = 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 526 | |
Chris Wilson | 51311d0 | 2010-11-17 09:10:42 +0000 | [diff] [blame] | 527 | if (args->size == 0) |
| 528 | return 0; |
| 529 | |
| 530 | if (!access_ok(VERIFY_WRITE, |
| 531 | (char __user *)(uintptr_t)args->data_ptr, |
| 532 | args->size)) |
| 533 | return -EFAULT; |
| 534 | |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 535 | ret = i915_mutex_lock_interruptible(dev); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 536 | if (ret) |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 537 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 538 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 539 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 540 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 541 | ret = -ENOENT; |
| 542 | goto unlock; |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 543 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 544 | |
Chris Wilson | 7dcd249 | 2010-09-26 20:21:44 +0100 | [diff] [blame] | 545 | /* Bounds check source. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 546 | if (args->offset > obj->base.size || |
| 547 | args->size > obj->base.size - args->offset) { |
Chris Wilson | ce9d419 | 2010-09-26 20:50:05 +0100 | [diff] [blame] | 548 | ret = -EINVAL; |
Chris Wilson | 35b62a8 | 2010-09-26 20:23:38 +0100 | [diff] [blame] | 549 | goto out; |
Chris Wilson | ce9d419 | 2010-09-26 20:50:05 +0100 | [diff] [blame] | 550 | } |
| 551 | |
Daniel Vetter | 1286ff7 | 2012-05-10 15:25:09 +0200 | [diff] [blame] | 552 | /* prime objects have no backing filp to GEM pread/pwrite |
| 553 | * pages from. |
| 554 | */ |
| 555 | if (!obj->base.filp) { |
| 556 | ret = -EINVAL; |
| 557 | goto out; |
| 558 | } |
| 559 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 560 | trace_i915_gem_object_pread(obj, args->offset, args->size); |
| 561 | |
Daniel Vetter | dbf7bff | 2012-03-25 19:47:29 +0200 | [diff] [blame] | 562 | ret = i915_gem_shmem_pread(dev, obj, args, file); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 563 | |
Chris Wilson | 35b62a8 | 2010-09-26 20:23:38 +0100 | [diff] [blame] | 564 | out: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 565 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 566 | unlock: |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 567 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 568 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 569 | } |
| 570 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 571 | /* This is the fast write path which cannot handle |
| 572 | * page faults in the source data |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame] | 573 | */ |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame] | 574 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 575 | static inline int |
| 576 | fast_user_write(struct io_mapping *mapping, |
| 577 | loff_t page_base, int page_offset, |
| 578 | char __user *user_data, |
| 579 | int length) |
| 580 | { |
Ben Widawsky | 4f0c7cf | 2012-04-16 14:07:47 -0700 | [diff] [blame] | 581 | void __iomem *vaddr_atomic; |
| 582 | void *vaddr; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 583 | unsigned long unwritten; |
| 584 | |
Peter Zijlstra | 3e4d3af | 2010-10-26 14:21:51 -0700 | [diff] [blame] | 585 | vaddr_atomic = io_mapping_map_atomic_wc(mapping, page_base); |
Ben Widawsky | 4f0c7cf | 2012-04-16 14:07:47 -0700 | [diff] [blame] | 586 | /* We can use the cpu mem copy function because this is X86. */ |
| 587 | vaddr = (void __force*)vaddr_atomic + page_offset; |
| 588 | unwritten = __copy_from_user_inatomic_nocache(vaddr, |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 589 | user_data, length); |
Peter Zijlstra | 3e4d3af | 2010-10-26 14:21:51 -0700 | [diff] [blame] | 590 | io_mapping_unmap_atomic(vaddr_atomic); |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 591 | return unwritten; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 592 | } |
| 593 | |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 594 | /** |
| 595 | * This is the fast pwrite path, where we copy the data directly from the |
| 596 | * user into the GTT, uncached. |
| 597 | */ |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 598 | static int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 599 | i915_gem_gtt_pwrite_fast(struct drm_device *dev, |
| 600 | struct drm_i915_gem_object *obj, |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 601 | struct drm_i915_gem_pwrite *args, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 602 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 603 | { |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 604 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 605 | ssize_t remain; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 606 | loff_t offset, page_base; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 607 | char __user *user_data; |
Daniel Vetter | 935aaa6 | 2012-03-25 19:47:35 +0200 | [diff] [blame] | 608 | int page_offset, page_length, ret; |
| 609 | |
Chris Wilson | 86a1ee2 | 2012-08-11 15:41:04 +0100 | [diff] [blame] | 610 | ret = i915_gem_object_pin(obj, 0, true, true); |
Daniel Vetter | 935aaa6 | 2012-03-25 19:47:35 +0200 | [diff] [blame] | 611 | if (ret) |
| 612 | goto out; |
| 613 | |
| 614 | ret = i915_gem_object_set_to_gtt_domain(obj, true); |
| 615 | if (ret) |
| 616 | goto out_unpin; |
| 617 | |
| 618 | ret = i915_gem_object_put_fence(obj); |
| 619 | if (ret) |
| 620 | goto out_unpin; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 621 | |
| 622 | user_data = (char __user *) (uintptr_t) args->data_ptr; |
| 623 | remain = args->size; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 624 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 625 | offset = obj->gtt_offset + args->offset; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 626 | |
| 627 | while (remain > 0) { |
| 628 | /* Operation in this page |
| 629 | * |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 630 | * page_base = page offset within aperture |
| 631 | * page_offset = offset within page |
| 632 | * page_length = bytes to copy for this page |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 633 | */ |
Chris Wilson | c8cbbb8 | 2011-05-12 22:17:11 +0100 | [diff] [blame] | 634 | page_base = offset & PAGE_MASK; |
| 635 | page_offset = offset_in_page(offset); |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 636 | page_length = remain; |
| 637 | if ((page_offset + remain) > PAGE_SIZE) |
| 638 | page_length = PAGE_SIZE - page_offset; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 639 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 640 | /* If we get a fault while copying data, then (presumably) our |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 641 | * source page isn't available. Return the error and we'll |
| 642 | * retry in the slow path. |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 643 | */ |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 644 | if (fast_user_write(dev_priv->mm.gtt_mapping, page_base, |
Daniel Vetter | 935aaa6 | 2012-03-25 19:47:35 +0200 | [diff] [blame] | 645 | page_offset, user_data, page_length)) { |
| 646 | ret = -EFAULT; |
| 647 | goto out_unpin; |
| 648 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 649 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 650 | remain -= page_length; |
| 651 | user_data += page_length; |
| 652 | offset += page_length; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 653 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 654 | |
Daniel Vetter | 935aaa6 | 2012-03-25 19:47:35 +0200 | [diff] [blame] | 655 | out_unpin: |
| 656 | i915_gem_object_unpin(obj); |
| 657 | out: |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 658 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 659 | } |
| 660 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 661 | /* Per-page copy function for the shmem pwrite fastpath. |
| 662 | * Flushes invalid cachelines before writing to the target if |
| 663 | * needs_clflush_before is set and flushes out any written cachelines after |
| 664 | * writing if needs_clflush is set. */ |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 665 | static int |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 666 | shmem_pwrite_fast(struct page *page, int shmem_page_offset, int page_length, |
| 667 | char __user *user_data, |
| 668 | bool page_do_bit17_swizzling, |
| 669 | bool needs_clflush_before, |
| 670 | bool needs_clflush_after) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 671 | { |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 672 | char *vaddr; |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 673 | int ret; |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 674 | |
Daniel Vetter | e7e58eb | 2012-03-25 19:47:43 +0200 | [diff] [blame] | 675 | if (unlikely(page_do_bit17_swizzling)) |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 676 | return -EINVAL; |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 677 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 678 | vaddr = kmap_atomic(page); |
| 679 | if (needs_clflush_before) |
| 680 | drm_clflush_virt_range(vaddr + shmem_page_offset, |
| 681 | page_length); |
| 682 | ret = __copy_from_user_inatomic_nocache(vaddr + shmem_page_offset, |
| 683 | user_data, |
| 684 | page_length); |
| 685 | if (needs_clflush_after) |
| 686 | drm_clflush_virt_range(vaddr + shmem_page_offset, |
| 687 | page_length); |
| 688 | kunmap_atomic(vaddr); |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 689 | |
Chris Wilson | 755d221 | 2012-09-04 21:02:55 +0100 | [diff] [blame] | 690 | return ret ? -EFAULT : 0; |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 691 | } |
| 692 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 693 | /* Only difference to the fast-path function is that this can handle bit17 |
| 694 | * and uses non-atomic copy and kmap functions. */ |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 695 | static int |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 696 | shmem_pwrite_slow(struct page *page, int shmem_page_offset, int page_length, |
| 697 | char __user *user_data, |
| 698 | bool page_do_bit17_swizzling, |
| 699 | bool needs_clflush_before, |
| 700 | bool needs_clflush_after) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 701 | { |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 702 | char *vaddr; |
| 703 | int ret; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 704 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 705 | vaddr = kmap(page); |
Daniel Vetter | e7e58eb | 2012-03-25 19:47:43 +0200 | [diff] [blame] | 706 | if (unlikely(needs_clflush_before || page_do_bit17_swizzling)) |
Daniel Vetter | 23c18c7 | 2012-03-25 19:47:42 +0200 | [diff] [blame] | 707 | shmem_clflush_swizzled_range(vaddr + shmem_page_offset, |
| 708 | page_length, |
| 709 | page_do_bit17_swizzling); |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 710 | if (page_do_bit17_swizzling) |
| 711 | ret = __copy_from_user_swizzled(vaddr, shmem_page_offset, |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 712 | user_data, |
| 713 | page_length); |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 714 | else |
| 715 | ret = __copy_from_user(vaddr + shmem_page_offset, |
| 716 | user_data, |
| 717 | page_length); |
| 718 | if (needs_clflush_after) |
Daniel Vetter | 23c18c7 | 2012-03-25 19:47:42 +0200 | [diff] [blame] | 719 | shmem_clflush_swizzled_range(vaddr + shmem_page_offset, |
| 720 | page_length, |
| 721 | page_do_bit17_swizzling); |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 722 | kunmap(page); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 723 | |
Chris Wilson | 755d221 | 2012-09-04 21:02:55 +0100 | [diff] [blame] | 724 | return ret ? -EFAULT : 0; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 725 | } |
| 726 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 727 | static int |
Daniel Vetter | e244a44 | 2012-03-25 19:47:28 +0200 | [diff] [blame] | 728 | i915_gem_shmem_pwrite(struct drm_device *dev, |
| 729 | struct drm_i915_gem_object *obj, |
| 730 | struct drm_i915_gem_pwrite *args, |
| 731 | struct drm_file *file) |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 732 | { |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 733 | ssize_t remain; |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 734 | loff_t offset; |
| 735 | char __user *user_data; |
Ben Widawsky | eb2c0c8 | 2012-02-15 14:42:43 +0100 | [diff] [blame] | 736 | int shmem_page_offset, page_length, ret = 0; |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 737 | int obj_do_bit17_swizzling, page_do_bit17_swizzling; |
Daniel Vetter | e244a44 | 2012-03-25 19:47:28 +0200 | [diff] [blame] | 738 | int hit_slowpath = 0; |
Daniel Vetter | 5864288 | 2012-03-25 19:47:37 +0200 | [diff] [blame] | 739 | int needs_clflush_after = 0; |
| 740 | int needs_clflush_before = 0; |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 741 | int i; |
| 742 | struct scatterlist *sg; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 743 | |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 744 | user_data = (char __user *) (uintptr_t) args->data_ptr; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 745 | remain = args->size; |
| 746 | |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 747 | obj_do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 748 | |
Daniel Vetter | 5864288 | 2012-03-25 19:47:37 +0200 | [diff] [blame] | 749 | if (obj->base.write_domain != I915_GEM_DOMAIN_CPU) { |
| 750 | /* If we're not in the cpu write domain, set ourself into the gtt |
| 751 | * write domain and manually flush cachelines (if required). This |
| 752 | * optimizes for the case when the gpu will use the data |
| 753 | * right away and we therefore have to clflush anyway. */ |
| 754 | if (obj->cache_level == I915_CACHE_NONE) |
| 755 | needs_clflush_after = 1; |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 756 | if (obj->gtt_space) { |
| 757 | ret = i915_gem_object_set_to_gtt_domain(obj, true); |
| 758 | if (ret) |
| 759 | return ret; |
| 760 | } |
Daniel Vetter | 5864288 | 2012-03-25 19:47:37 +0200 | [diff] [blame] | 761 | } |
| 762 | /* Same trick applies for invalidate partially written cachelines before |
| 763 | * writing. */ |
| 764 | if (!(obj->base.read_domains & I915_GEM_DOMAIN_CPU) |
| 765 | && obj->cache_level == I915_CACHE_NONE) |
| 766 | needs_clflush_before = 1; |
| 767 | |
Chris Wilson | 755d221 | 2012-09-04 21:02:55 +0100 | [diff] [blame] | 768 | ret = i915_gem_object_get_pages(obj); |
| 769 | if (ret) |
| 770 | return ret; |
| 771 | |
| 772 | i915_gem_object_pin_pages(obj); |
| 773 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 774 | offset = args->offset; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 775 | obj->dirty = 1; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 776 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 777 | for_each_sg(obj->pages->sgl, sg, obj->pages->nents, i) { |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 778 | struct page *page; |
Daniel Vetter | 5864288 | 2012-03-25 19:47:37 +0200 | [diff] [blame] | 779 | int partial_cacheline_write; |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 780 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 781 | if (i < offset >> PAGE_SHIFT) |
| 782 | continue; |
| 783 | |
| 784 | if (remain <= 0) |
| 785 | break; |
| 786 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 787 | /* Operation in this page |
| 788 | * |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 789 | * shmem_page_offset = offset within page in shmem file |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 790 | * page_length = bytes to copy for this page |
| 791 | */ |
Chris Wilson | c8cbbb8 | 2011-05-12 22:17:11 +0100 | [diff] [blame] | 792 | shmem_page_offset = offset_in_page(offset); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 793 | |
| 794 | page_length = remain; |
| 795 | if ((shmem_page_offset + page_length) > PAGE_SIZE) |
| 796 | page_length = PAGE_SIZE - shmem_page_offset; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 797 | |
Daniel Vetter | 5864288 | 2012-03-25 19:47:37 +0200 | [diff] [blame] | 798 | /* If we don't overwrite a cacheline completely we need to be |
| 799 | * careful to have up-to-date data by first clflushing. Don't |
| 800 | * overcomplicate things and flush the entire patch. */ |
| 801 | partial_cacheline_write = needs_clflush_before && |
| 802 | ((shmem_page_offset | page_length) |
| 803 | & (boot_cpu_data.x86_clflush_size - 1)); |
| 804 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 805 | page = sg_page(sg); |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 806 | page_do_bit17_swizzling = obj_do_bit17_swizzling && |
| 807 | (page_to_phys(page) & (1 << 17)) != 0; |
| 808 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 809 | ret = shmem_pwrite_fast(page, shmem_page_offset, page_length, |
| 810 | user_data, page_do_bit17_swizzling, |
| 811 | partial_cacheline_write, |
| 812 | needs_clflush_after); |
| 813 | if (ret == 0) |
| 814 | goto next_page; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 815 | |
Daniel Vetter | e244a44 | 2012-03-25 19:47:28 +0200 | [diff] [blame] | 816 | hit_slowpath = 1; |
Daniel Vetter | e244a44 | 2012-03-25 19:47:28 +0200 | [diff] [blame] | 817 | mutex_unlock(&dev->struct_mutex); |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 818 | ret = shmem_pwrite_slow(page, shmem_page_offset, page_length, |
| 819 | user_data, page_do_bit17_swizzling, |
| 820 | partial_cacheline_write, |
| 821 | needs_clflush_after); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 822 | |
Daniel Vetter | e244a44 | 2012-03-25 19:47:28 +0200 | [diff] [blame] | 823 | mutex_lock(&dev->struct_mutex); |
Chris Wilson | 755d221 | 2012-09-04 21:02:55 +0100 | [diff] [blame] | 824 | |
Daniel Vetter | e244a44 | 2012-03-25 19:47:28 +0200 | [diff] [blame] | 825 | next_page: |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 826 | set_page_dirty(page); |
| 827 | mark_page_accessed(page); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 828 | |
Chris Wilson | 755d221 | 2012-09-04 21:02:55 +0100 | [diff] [blame] | 829 | if (ret) |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 830 | goto out; |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 831 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 832 | remain -= page_length; |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 833 | user_data += page_length; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 834 | offset += page_length; |
| 835 | } |
| 836 | |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 837 | out: |
Chris Wilson | 755d221 | 2012-09-04 21:02:55 +0100 | [diff] [blame] | 838 | i915_gem_object_unpin_pages(obj); |
| 839 | |
Daniel Vetter | e244a44 | 2012-03-25 19:47:28 +0200 | [diff] [blame] | 840 | if (hit_slowpath) { |
| 841 | /* Fixup: Kill any reinstated backing storage pages */ |
| 842 | if (obj->madv == __I915_MADV_PURGED) |
| 843 | i915_gem_object_truncate(obj); |
| 844 | /* and flush dirty cachelines in case the object isn't in the cpu write |
| 845 | * domain anymore. */ |
| 846 | if (obj->base.write_domain != I915_GEM_DOMAIN_CPU) { |
| 847 | i915_gem_clflush_object(obj); |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 848 | i915_gem_chipset_flush(dev); |
Daniel Vetter | e244a44 | 2012-03-25 19:47:28 +0200 | [diff] [blame] | 849 | } |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 850 | } |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 851 | |
Daniel Vetter | 5864288 | 2012-03-25 19:47:37 +0200 | [diff] [blame] | 852 | if (needs_clflush_after) |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 853 | i915_gem_chipset_flush(dev); |
Daniel Vetter | 5864288 | 2012-03-25 19:47:37 +0200 | [diff] [blame] | 854 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 855 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 856 | } |
| 857 | |
| 858 | /** |
| 859 | * Writes data to the object referenced by handle. |
| 860 | * |
| 861 | * On error, the contents of the buffer that were to be modified are undefined. |
| 862 | */ |
| 863 | int |
| 864 | i915_gem_pwrite_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 865 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 866 | { |
| 867 | struct drm_i915_gem_pwrite *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 868 | struct drm_i915_gem_object *obj; |
Chris Wilson | 51311d0 | 2010-11-17 09:10:42 +0000 | [diff] [blame] | 869 | int ret; |
| 870 | |
| 871 | if (args->size == 0) |
| 872 | return 0; |
| 873 | |
| 874 | if (!access_ok(VERIFY_READ, |
| 875 | (char __user *)(uintptr_t)args->data_ptr, |
| 876 | args->size)) |
| 877 | return -EFAULT; |
| 878 | |
Daniel Vetter | f56f821 | 2012-03-25 19:47:41 +0200 | [diff] [blame] | 879 | ret = fault_in_multipages_readable((char __user *)(uintptr_t)args->data_ptr, |
| 880 | args->size); |
Chris Wilson | 51311d0 | 2010-11-17 09:10:42 +0000 | [diff] [blame] | 881 | if (ret) |
| 882 | return -EFAULT; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 883 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 884 | ret = i915_mutex_lock_interruptible(dev); |
| 885 | if (ret) |
| 886 | return ret; |
| 887 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 888 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 889 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 890 | ret = -ENOENT; |
| 891 | goto unlock; |
| 892 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 893 | |
Chris Wilson | 7dcd249 | 2010-09-26 20:21:44 +0100 | [diff] [blame] | 894 | /* Bounds check destination. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 895 | if (args->offset > obj->base.size || |
| 896 | args->size > obj->base.size - args->offset) { |
Chris Wilson | ce9d419 | 2010-09-26 20:50:05 +0100 | [diff] [blame] | 897 | ret = -EINVAL; |
Chris Wilson | 35b62a8 | 2010-09-26 20:23:38 +0100 | [diff] [blame] | 898 | goto out; |
Chris Wilson | ce9d419 | 2010-09-26 20:50:05 +0100 | [diff] [blame] | 899 | } |
| 900 | |
Daniel Vetter | 1286ff7 | 2012-05-10 15:25:09 +0200 | [diff] [blame] | 901 | /* prime objects have no backing filp to GEM pread/pwrite |
| 902 | * pages from. |
| 903 | */ |
| 904 | if (!obj->base.filp) { |
| 905 | ret = -EINVAL; |
| 906 | goto out; |
| 907 | } |
| 908 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 909 | trace_i915_gem_object_pwrite(obj, args->offset, args->size); |
| 910 | |
Daniel Vetter | 935aaa6 | 2012-03-25 19:47:35 +0200 | [diff] [blame] | 911 | ret = -EFAULT; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 912 | /* We can only do the GTT pwrite on untiled buffers, as otherwise |
| 913 | * it would end up going through the fenced access, and we'll get |
| 914 | * different detiling behavior between reading and writing. |
| 915 | * pread/pwrite currently are reading and writing from the CPU |
| 916 | * perspective, requiring manual detiling by the client. |
| 917 | */ |
Daniel Vetter | 5c0480f | 2011-12-14 13:57:30 +0100 | [diff] [blame] | 918 | if (obj->phys_obj) { |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 919 | ret = i915_gem_phys_pwrite(dev, obj, args, file); |
Daniel Vetter | 5c0480f | 2011-12-14 13:57:30 +0100 | [diff] [blame] | 920 | goto out; |
| 921 | } |
| 922 | |
Chris Wilson | 86a1ee2 | 2012-08-11 15:41:04 +0100 | [diff] [blame] | 923 | if (obj->cache_level == I915_CACHE_NONE && |
Daniel Vetter | c07496f | 2012-04-13 15:51:51 +0200 | [diff] [blame] | 924 | obj->tiling_mode == I915_TILING_NONE && |
Daniel Vetter | 5c0480f | 2011-12-14 13:57:30 +0100 | [diff] [blame] | 925 | obj->base.write_domain != I915_GEM_DOMAIN_CPU) { |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 926 | ret = i915_gem_gtt_pwrite_fast(dev, obj, args, file); |
Daniel Vetter | 935aaa6 | 2012-03-25 19:47:35 +0200 | [diff] [blame] | 927 | /* Note that the gtt paths might fail with non-page-backed user |
| 928 | * pointers (e.g. gtt mappings when moving data between |
| 929 | * textures). Fallback to the shmem path in that case. */ |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 930 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 931 | |
Chris Wilson | 86a1ee2 | 2012-08-11 15:41:04 +0100 | [diff] [blame] | 932 | if (ret == -EFAULT || ret == -ENOSPC) |
Daniel Vetter | 935aaa6 | 2012-03-25 19:47:35 +0200 | [diff] [blame] | 933 | ret = i915_gem_shmem_pwrite(dev, obj, args, file); |
Daniel Vetter | 5c0480f | 2011-12-14 13:57:30 +0100 | [diff] [blame] | 934 | |
Chris Wilson | 35b62a8 | 2010-09-26 20:23:38 +0100 | [diff] [blame] | 935 | out: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 936 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 937 | unlock: |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 938 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 939 | return ret; |
| 940 | } |
| 941 | |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 942 | int |
| 943 | i915_gem_check_wedge(struct drm_i915_private *dev_priv, |
| 944 | bool interruptible) |
| 945 | { |
| 946 | if (atomic_read(&dev_priv->mm.wedged)) { |
| 947 | struct completion *x = &dev_priv->error_completion; |
| 948 | bool recovery_complete; |
| 949 | unsigned long flags; |
| 950 | |
| 951 | /* Give the error handler a chance to run. */ |
| 952 | spin_lock_irqsave(&x->wait.lock, flags); |
| 953 | recovery_complete = x->done > 0; |
| 954 | spin_unlock_irqrestore(&x->wait.lock, flags); |
| 955 | |
| 956 | /* Non-interruptible callers can't handle -EAGAIN, hence return |
| 957 | * -EIO unconditionally for these. */ |
| 958 | if (!interruptible) |
| 959 | return -EIO; |
| 960 | |
| 961 | /* Recovery complete, but still wedged means reset failure. */ |
| 962 | if (recovery_complete) |
| 963 | return -EIO; |
| 964 | |
| 965 | return -EAGAIN; |
| 966 | } |
| 967 | |
| 968 | return 0; |
| 969 | } |
| 970 | |
| 971 | /* |
| 972 | * Compare seqno against outstanding lazy request. Emit a request if they are |
| 973 | * equal. |
| 974 | */ |
| 975 | static int |
| 976 | i915_gem_check_olr(struct intel_ring_buffer *ring, u32 seqno) |
| 977 | { |
| 978 | int ret; |
| 979 | |
| 980 | BUG_ON(!mutex_is_locked(&ring->dev->struct_mutex)); |
| 981 | |
| 982 | ret = 0; |
| 983 | if (seqno == ring->outstanding_lazy_request) |
| 984 | ret = i915_add_request(ring, NULL, NULL); |
| 985 | |
| 986 | return ret; |
| 987 | } |
| 988 | |
| 989 | /** |
| 990 | * __wait_seqno - wait until execution of seqno has finished |
| 991 | * @ring: the ring expected to report seqno |
| 992 | * @seqno: duh! |
| 993 | * @interruptible: do an interruptible wait (normally yes) |
| 994 | * @timeout: in - how long to wait (NULL forever); out - how much time remaining |
| 995 | * |
| 996 | * Returns 0 if the seqno was found within the alloted time. Else returns the |
| 997 | * errno with remaining time filled in timeout argument. |
| 998 | */ |
| 999 | static int __wait_seqno(struct intel_ring_buffer *ring, u32 seqno, |
| 1000 | bool interruptible, struct timespec *timeout) |
| 1001 | { |
| 1002 | drm_i915_private_t *dev_priv = ring->dev->dev_private; |
| 1003 | struct timespec before, now, wait_time={1,0}; |
| 1004 | unsigned long timeout_jiffies; |
| 1005 | long end; |
| 1006 | bool wait_forever = true; |
| 1007 | int ret; |
| 1008 | |
| 1009 | if (i915_seqno_passed(ring->get_seqno(ring, true), seqno)) |
| 1010 | return 0; |
| 1011 | |
| 1012 | trace_i915_gem_request_wait_begin(ring, seqno); |
| 1013 | |
| 1014 | if (timeout != NULL) { |
| 1015 | wait_time = *timeout; |
| 1016 | wait_forever = false; |
| 1017 | } |
| 1018 | |
| 1019 | timeout_jiffies = timespec_to_jiffies(&wait_time); |
| 1020 | |
| 1021 | if (WARN_ON(!ring->irq_get(ring))) |
| 1022 | return -ENODEV; |
| 1023 | |
| 1024 | /* Record current time in case interrupted by signal, or wedged * */ |
| 1025 | getrawmonotonic(&before); |
| 1026 | |
| 1027 | #define EXIT_COND \ |
| 1028 | (i915_seqno_passed(ring->get_seqno(ring, false), seqno) || \ |
| 1029 | atomic_read(&dev_priv->mm.wedged)) |
| 1030 | do { |
| 1031 | if (interruptible) |
| 1032 | end = wait_event_interruptible_timeout(ring->irq_queue, |
| 1033 | EXIT_COND, |
| 1034 | timeout_jiffies); |
| 1035 | else |
| 1036 | end = wait_event_timeout(ring->irq_queue, EXIT_COND, |
| 1037 | timeout_jiffies); |
| 1038 | |
| 1039 | ret = i915_gem_check_wedge(dev_priv, interruptible); |
| 1040 | if (ret) |
| 1041 | end = ret; |
| 1042 | } while (end == 0 && wait_forever); |
| 1043 | |
| 1044 | getrawmonotonic(&now); |
| 1045 | |
| 1046 | ring->irq_put(ring); |
| 1047 | trace_i915_gem_request_wait_end(ring, seqno); |
| 1048 | #undef EXIT_COND |
| 1049 | |
| 1050 | if (timeout) { |
| 1051 | struct timespec sleep_time = timespec_sub(now, before); |
| 1052 | *timeout = timespec_sub(*timeout, sleep_time); |
| 1053 | } |
| 1054 | |
| 1055 | switch (end) { |
| 1056 | case -EIO: |
| 1057 | case -EAGAIN: /* Wedged */ |
| 1058 | case -ERESTARTSYS: /* Signal */ |
| 1059 | return (int)end; |
| 1060 | case 0: /* Timeout */ |
| 1061 | if (timeout) |
| 1062 | set_normalized_timespec(timeout, 0, 0); |
| 1063 | return -ETIME; |
| 1064 | default: /* Completed */ |
| 1065 | WARN_ON(end < 0); /* We're not aware of other errors */ |
| 1066 | return 0; |
| 1067 | } |
| 1068 | } |
| 1069 | |
| 1070 | /** |
| 1071 | * Waits for a sequence number to be signaled, and cleans up the |
| 1072 | * request and object lists appropriately for that event. |
| 1073 | */ |
| 1074 | int |
| 1075 | i915_wait_seqno(struct intel_ring_buffer *ring, uint32_t seqno) |
| 1076 | { |
| 1077 | struct drm_device *dev = ring->dev; |
| 1078 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1079 | bool interruptible = dev_priv->mm.interruptible; |
| 1080 | int ret; |
| 1081 | |
| 1082 | BUG_ON(!mutex_is_locked(&dev->struct_mutex)); |
| 1083 | BUG_ON(seqno == 0); |
| 1084 | |
| 1085 | ret = i915_gem_check_wedge(dev_priv, interruptible); |
| 1086 | if (ret) |
| 1087 | return ret; |
| 1088 | |
| 1089 | ret = i915_gem_check_olr(ring, seqno); |
| 1090 | if (ret) |
| 1091 | return ret; |
| 1092 | |
| 1093 | return __wait_seqno(ring, seqno, interruptible, NULL); |
| 1094 | } |
| 1095 | |
| 1096 | /** |
| 1097 | * Ensures that all rendering to the object has completed and the object is |
| 1098 | * safe to unbind from the GTT or access from the CPU. |
| 1099 | */ |
| 1100 | static __must_check int |
| 1101 | i915_gem_object_wait_rendering(struct drm_i915_gem_object *obj, |
| 1102 | bool readonly) |
| 1103 | { |
| 1104 | struct intel_ring_buffer *ring = obj->ring; |
| 1105 | u32 seqno; |
| 1106 | int ret; |
| 1107 | |
| 1108 | seqno = readonly ? obj->last_write_seqno : obj->last_read_seqno; |
| 1109 | if (seqno == 0) |
| 1110 | return 0; |
| 1111 | |
| 1112 | ret = i915_wait_seqno(ring, seqno); |
| 1113 | if (ret) |
| 1114 | return ret; |
| 1115 | |
| 1116 | i915_gem_retire_requests_ring(ring); |
| 1117 | |
| 1118 | /* Manually manage the write flush as we may have not yet |
| 1119 | * retired the buffer. |
| 1120 | */ |
| 1121 | if (obj->last_write_seqno && |
| 1122 | i915_seqno_passed(seqno, obj->last_write_seqno)) { |
| 1123 | obj->last_write_seqno = 0; |
| 1124 | obj->base.write_domain &= ~I915_GEM_GPU_DOMAINS; |
| 1125 | } |
| 1126 | |
| 1127 | return 0; |
| 1128 | } |
| 1129 | |
Chris Wilson | 3236f57 | 2012-08-24 09:35:09 +0100 | [diff] [blame] | 1130 | /* A nonblocking variant of the above wait. This is a highly dangerous routine |
| 1131 | * as the object state may change during this call. |
| 1132 | */ |
| 1133 | static __must_check int |
| 1134 | i915_gem_object_wait_rendering__nonblocking(struct drm_i915_gem_object *obj, |
| 1135 | bool readonly) |
| 1136 | { |
| 1137 | struct drm_device *dev = obj->base.dev; |
| 1138 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1139 | struct intel_ring_buffer *ring = obj->ring; |
| 1140 | u32 seqno; |
| 1141 | int ret; |
| 1142 | |
| 1143 | BUG_ON(!mutex_is_locked(&dev->struct_mutex)); |
| 1144 | BUG_ON(!dev_priv->mm.interruptible); |
| 1145 | |
| 1146 | seqno = readonly ? obj->last_write_seqno : obj->last_read_seqno; |
| 1147 | if (seqno == 0) |
| 1148 | return 0; |
| 1149 | |
| 1150 | ret = i915_gem_check_wedge(dev_priv, true); |
| 1151 | if (ret) |
| 1152 | return ret; |
| 1153 | |
| 1154 | ret = i915_gem_check_olr(ring, seqno); |
| 1155 | if (ret) |
| 1156 | return ret; |
| 1157 | |
| 1158 | mutex_unlock(&dev->struct_mutex); |
| 1159 | ret = __wait_seqno(ring, seqno, true, NULL); |
| 1160 | mutex_lock(&dev->struct_mutex); |
| 1161 | |
| 1162 | i915_gem_retire_requests_ring(ring); |
| 1163 | |
| 1164 | /* Manually manage the write flush as we may have not yet |
| 1165 | * retired the buffer. |
| 1166 | */ |
| 1167 | if (obj->last_write_seqno && |
| 1168 | i915_seqno_passed(seqno, obj->last_write_seqno)) { |
| 1169 | obj->last_write_seqno = 0; |
| 1170 | obj->base.write_domain &= ~I915_GEM_GPU_DOMAINS; |
| 1171 | } |
| 1172 | |
| 1173 | return ret; |
| 1174 | } |
| 1175 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1176 | /** |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1177 | * Called when user space prepares to use an object with the CPU, either |
| 1178 | * through the mmap ioctl's mapping or a GTT mapping. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1179 | */ |
| 1180 | int |
| 1181 | i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1182 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1183 | { |
| 1184 | struct drm_i915_gem_set_domain *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1185 | struct drm_i915_gem_object *obj; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1186 | uint32_t read_domains = args->read_domains; |
| 1187 | uint32_t write_domain = args->write_domain; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1188 | int ret; |
| 1189 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1190 | /* Only handle setting domains to types used by the CPU. */ |
Chris Wilson | 21d509e | 2009-06-06 09:46:02 +0100 | [diff] [blame] | 1191 | if (write_domain & I915_GEM_GPU_DOMAINS) |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1192 | return -EINVAL; |
| 1193 | |
Chris Wilson | 21d509e | 2009-06-06 09:46:02 +0100 | [diff] [blame] | 1194 | if (read_domains & I915_GEM_GPU_DOMAINS) |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1195 | return -EINVAL; |
| 1196 | |
| 1197 | /* Having something in the write domain implies it's in the read |
| 1198 | * domain, and only that read domain. Enforce that in the request. |
| 1199 | */ |
| 1200 | if (write_domain != 0 && read_domains != write_domain) |
| 1201 | return -EINVAL; |
| 1202 | |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1203 | ret = i915_mutex_lock_interruptible(dev); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1204 | if (ret) |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1205 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1206 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1207 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 1208 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1209 | ret = -ENOENT; |
| 1210 | goto unlock; |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1211 | } |
Jesse Barnes | 652c393 | 2009-08-17 13:31:43 -0700 | [diff] [blame] | 1212 | |
Chris Wilson | 3236f57 | 2012-08-24 09:35:09 +0100 | [diff] [blame] | 1213 | /* Try to flush the object off the GPU without holding the lock. |
| 1214 | * We will repeat the flush holding the lock in the normal manner |
| 1215 | * to catch cases where we are gazumped. |
| 1216 | */ |
| 1217 | ret = i915_gem_object_wait_rendering__nonblocking(obj, !write_domain); |
| 1218 | if (ret) |
| 1219 | goto unref; |
| 1220 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1221 | if (read_domains & I915_GEM_DOMAIN_GTT) { |
| 1222 | ret = i915_gem_object_set_to_gtt_domain(obj, write_domain != 0); |
Eric Anholt | 0235439 | 2008-11-26 13:58:13 -0800 | [diff] [blame] | 1223 | |
| 1224 | /* Silently promote "you're not bound, there was nothing to do" |
| 1225 | * to success, since the client was just asking us to |
| 1226 | * make sure everything was done. |
| 1227 | */ |
| 1228 | if (ret == -EINVAL) |
| 1229 | ret = 0; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1230 | } else { |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1231 | ret = i915_gem_object_set_to_cpu_domain(obj, write_domain != 0); |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1232 | } |
| 1233 | |
Chris Wilson | 3236f57 | 2012-08-24 09:35:09 +0100 | [diff] [blame] | 1234 | unref: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1235 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1236 | unlock: |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1237 | mutex_unlock(&dev->struct_mutex); |
| 1238 | return ret; |
| 1239 | } |
| 1240 | |
| 1241 | /** |
| 1242 | * Called when user space has done writes to this buffer |
| 1243 | */ |
| 1244 | int |
| 1245 | i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1246 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1247 | { |
| 1248 | struct drm_i915_gem_sw_finish *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1249 | struct drm_i915_gem_object *obj; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1250 | int ret = 0; |
| 1251 | |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1252 | ret = i915_mutex_lock_interruptible(dev); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1253 | if (ret) |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1254 | return ret; |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1255 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1256 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 1257 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1258 | ret = -ENOENT; |
| 1259 | goto unlock; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1260 | } |
| 1261 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1262 | /* Pinned buffers may be scanout, so flush the cache */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1263 | if (obj->pin_count) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1264 | i915_gem_object_flush_cpu_write_domain(obj); |
| 1265 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1266 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1267 | unlock: |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1268 | mutex_unlock(&dev->struct_mutex); |
| 1269 | return ret; |
| 1270 | } |
| 1271 | |
| 1272 | /** |
| 1273 | * Maps the contents of an object, returning the address it is mapped |
| 1274 | * into. |
| 1275 | * |
| 1276 | * While the mapping holds a reference on the contents of the object, it doesn't |
| 1277 | * imply a ref on the object itself. |
| 1278 | */ |
| 1279 | int |
| 1280 | i915_gem_mmap_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1281 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1282 | { |
| 1283 | struct drm_i915_gem_mmap *args = data; |
| 1284 | struct drm_gem_object *obj; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1285 | unsigned long addr; |
| 1286 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1287 | obj = drm_gem_object_lookup(dev, file, args->handle); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1288 | if (obj == NULL) |
Chris Wilson | bf79cb9 | 2010-08-04 14:19:46 +0100 | [diff] [blame] | 1289 | return -ENOENT; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1290 | |
Daniel Vetter | 1286ff7 | 2012-05-10 15:25:09 +0200 | [diff] [blame] | 1291 | /* prime objects have no backing filp to GEM mmap |
| 1292 | * pages from. |
| 1293 | */ |
| 1294 | if (!obj->filp) { |
| 1295 | drm_gem_object_unreference_unlocked(obj); |
| 1296 | return -EINVAL; |
| 1297 | } |
| 1298 | |
Linus Torvalds | 6be5ceb | 2012-04-20 17:13:58 -0700 | [diff] [blame] | 1299 | addr = vm_mmap(obj->filp, 0, args->size, |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1300 | PROT_READ | PROT_WRITE, MAP_SHARED, |
| 1301 | args->offset); |
Luca Barbieri | bc9025b | 2010-02-09 05:49:12 +0000 | [diff] [blame] | 1302 | drm_gem_object_unreference_unlocked(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1303 | if (IS_ERR((void *)addr)) |
| 1304 | return addr; |
| 1305 | |
| 1306 | args->addr_ptr = (uint64_t) addr; |
| 1307 | |
| 1308 | return 0; |
| 1309 | } |
| 1310 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1311 | /** |
| 1312 | * i915_gem_fault - fault a page into the GTT |
| 1313 | * vma: VMA in question |
| 1314 | * vmf: fault info |
| 1315 | * |
| 1316 | * The fault handler is set up by drm_gem_mmap() when a object is GTT mapped |
| 1317 | * from userspace. The fault handler takes care of binding the object to |
| 1318 | * the GTT (if needed), allocating and programming a fence register (again, |
| 1319 | * only if needed based on whether the old reg is still valid or the object |
| 1320 | * is tiled) and inserting a new PTE into the faulting process. |
| 1321 | * |
| 1322 | * Note that the faulting process may involve evicting existing objects |
| 1323 | * from the GTT and/or fence registers to make room. So performance may |
| 1324 | * suffer if the GTT working set is large or there are few fence registers |
| 1325 | * left. |
| 1326 | */ |
| 1327 | int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) |
| 1328 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1329 | struct drm_i915_gem_object *obj = to_intel_bo(vma->vm_private_data); |
| 1330 | struct drm_device *dev = obj->base.dev; |
Chris Wilson | 7d1c480 | 2010-08-07 21:45:03 +0100 | [diff] [blame] | 1331 | drm_i915_private_t *dev_priv = dev->dev_private; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1332 | pgoff_t page_offset; |
| 1333 | unsigned long pfn; |
| 1334 | int ret = 0; |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 1335 | bool write = !!(vmf->flags & FAULT_FLAG_WRITE); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1336 | |
| 1337 | /* We don't use vmf->pgoff since that has the fake offset */ |
| 1338 | page_offset = ((unsigned long)vmf->virtual_address - vma->vm_start) >> |
| 1339 | PAGE_SHIFT; |
| 1340 | |
Chris Wilson | d9bc7e9 | 2011-02-07 13:09:31 +0000 | [diff] [blame] | 1341 | ret = i915_mutex_lock_interruptible(dev); |
| 1342 | if (ret) |
| 1343 | goto out; |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 1344 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1345 | trace_i915_gem_object_fault(obj, page_offset, true, write); |
| 1346 | |
Chris Wilson | d9bc7e9 | 2011-02-07 13:09:31 +0000 | [diff] [blame] | 1347 | /* Now bind it into the GTT if needed */ |
Chris Wilson | c983930 | 2012-11-20 10:45:17 +0000 | [diff] [blame] | 1348 | ret = i915_gem_object_pin(obj, 0, true, false); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 1349 | if (ret) |
| 1350 | goto unlock; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1351 | |
Chris Wilson | c983930 | 2012-11-20 10:45:17 +0000 | [diff] [blame] | 1352 | ret = i915_gem_object_set_to_gtt_domain(obj, write); |
| 1353 | if (ret) |
| 1354 | goto unpin; |
| 1355 | |
| 1356 | ret = i915_gem_object_get_fence(obj); |
| 1357 | if (ret) |
| 1358 | goto unpin; |
Chris Wilson | 7d1c480 | 2010-08-07 21:45:03 +0100 | [diff] [blame] | 1359 | |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 1360 | obj->fault_mappable = true; |
| 1361 | |
Daniel Vetter | dd2757f | 2012-06-07 15:55:57 +0200 | [diff] [blame] | 1362 | pfn = ((dev_priv->mm.gtt_base_addr + obj->gtt_offset) >> PAGE_SHIFT) + |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1363 | page_offset; |
| 1364 | |
| 1365 | /* Finally, remap it using the new GTT offset */ |
| 1366 | ret = vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, pfn); |
Chris Wilson | c983930 | 2012-11-20 10:45:17 +0000 | [diff] [blame] | 1367 | unpin: |
| 1368 | i915_gem_object_unpin(obj); |
Chris Wilson | c715089 | 2009-09-23 00:43:56 +0100 | [diff] [blame] | 1369 | unlock: |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1370 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | d9bc7e9 | 2011-02-07 13:09:31 +0000 | [diff] [blame] | 1371 | out: |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1372 | switch (ret) { |
Chris Wilson | d9bc7e9 | 2011-02-07 13:09:31 +0000 | [diff] [blame] | 1373 | case -EIO: |
Daniel Vetter | a9340cc | 2012-07-04 22:18:42 +0200 | [diff] [blame] | 1374 | /* If this -EIO is due to a gpu hang, give the reset code a |
| 1375 | * chance to clean up the mess. Otherwise return the proper |
| 1376 | * SIGBUS. */ |
| 1377 | if (!atomic_read(&dev_priv->mm.wedged)) |
| 1378 | return VM_FAULT_SIGBUS; |
Chris Wilson | 045e769 | 2010-11-07 09:18:22 +0000 | [diff] [blame] | 1379 | case -EAGAIN: |
Chris Wilson | d9bc7e9 | 2011-02-07 13:09:31 +0000 | [diff] [blame] | 1380 | /* Give the error handler a chance to run and move the |
| 1381 | * objects off the GPU active list. Next time we service the |
| 1382 | * fault, we should be able to transition the page into the |
| 1383 | * GTT without touching the GPU (and so avoid further |
| 1384 | * EIO/EGAIN). If the GPU is wedged, then there is no issue |
| 1385 | * with coherency, just lost writes. |
| 1386 | */ |
Chris Wilson | 045e769 | 2010-11-07 09:18:22 +0000 | [diff] [blame] | 1387 | set_need_resched(); |
Chris Wilson | c715089 | 2009-09-23 00:43:56 +0100 | [diff] [blame] | 1388 | case 0: |
| 1389 | case -ERESTARTSYS: |
Chris Wilson | bed636a | 2011-02-11 20:31:19 +0000 | [diff] [blame] | 1390 | case -EINTR: |
Dmitry Rogozhkin | e79e0fe | 2012-10-03 17:15:26 +0300 | [diff] [blame] | 1391 | case -EBUSY: |
| 1392 | /* |
| 1393 | * EBUSY is ok: this just means that another thread |
| 1394 | * already did the job. |
| 1395 | */ |
Chris Wilson | c715089 | 2009-09-23 00:43:56 +0100 | [diff] [blame] | 1396 | return VM_FAULT_NOPAGE; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1397 | case -ENOMEM: |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1398 | return VM_FAULT_OOM; |
Daniel Vetter | a7c2e1a | 2012-10-17 11:17:16 +0200 | [diff] [blame] | 1399 | case -ENOSPC: |
| 1400 | return VM_FAULT_SIGBUS; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1401 | default: |
Daniel Vetter | a7c2e1a | 2012-10-17 11:17:16 +0200 | [diff] [blame] | 1402 | WARN_ONCE(ret, "unhandled error in i915_gem_fault: %i\n", ret); |
Chris Wilson | c715089 | 2009-09-23 00:43:56 +0100 | [diff] [blame] | 1403 | return VM_FAULT_SIGBUS; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1404 | } |
| 1405 | } |
| 1406 | |
| 1407 | /** |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1408 | * i915_gem_release_mmap - remove physical page mappings |
| 1409 | * @obj: obj in question |
| 1410 | * |
André Goddard Rosa | af901ca | 2009-11-14 13:09:05 -0200 | [diff] [blame] | 1411 | * Preserve the reservation of the mmapping with the DRM core code, but |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1412 | * relinquish ownership of the pages back to the system. |
| 1413 | * |
| 1414 | * It is vital that we remove the page mapping if we have mapped a tiled |
| 1415 | * object through the GTT and then lose the fence register due to |
| 1416 | * resource pressure. Similarly if the object has been moved out of the |
| 1417 | * aperture, than pages mapped into userspace must be revoked. Removing the |
| 1418 | * mapping will then trigger a page fault on the next user access, allowing |
| 1419 | * fixup by i915_gem_fault(). |
| 1420 | */ |
Eric Anholt | d05ca30 | 2009-07-10 13:02:26 -0700 | [diff] [blame] | 1421 | void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1422 | i915_gem_release_mmap(struct drm_i915_gem_object *obj) |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1423 | { |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 1424 | if (!obj->fault_mappable) |
| 1425 | return; |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1426 | |
Chris Wilson | f6e4788 | 2011-03-20 21:09:12 +0000 | [diff] [blame] | 1427 | if (obj->base.dev->dev_mapping) |
| 1428 | unmap_mapping_range(obj->base.dev->dev_mapping, |
| 1429 | (loff_t)obj->base.map_list.hash.key<<PAGE_SHIFT, |
| 1430 | obj->base.size, 1); |
Daniel Vetter | fb7d516 | 2010-10-01 22:05:20 +0200 | [diff] [blame] | 1431 | |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 1432 | obj->fault_mappable = false; |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1433 | } |
| 1434 | |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1435 | static uint32_t |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1436 | i915_gem_get_gtt_size(struct drm_device *dev, uint32_t size, int tiling_mode) |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1437 | { |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1438 | uint32_t gtt_size; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1439 | |
| 1440 | if (INTEL_INFO(dev)->gen >= 4 || |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1441 | tiling_mode == I915_TILING_NONE) |
| 1442 | return size; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1443 | |
| 1444 | /* Previous chips need a power-of-two fence region when tiling */ |
| 1445 | if (INTEL_INFO(dev)->gen == 3) |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1446 | gtt_size = 1024*1024; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1447 | else |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1448 | gtt_size = 512*1024; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1449 | |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1450 | while (gtt_size < size) |
| 1451 | gtt_size <<= 1; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1452 | |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1453 | return gtt_size; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1454 | } |
| 1455 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1456 | /** |
| 1457 | * i915_gem_get_gtt_alignment - return required GTT alignment for an object |
| 1458 | * @obj: object to check |
| 1459 | * |
| 1460 | * Return the required GTT alignment for an object, taking into account |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 1461 | * potential fence register mapping. |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1462 | */ |
| 1463 | static uint32_t |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1464 | i915_gem_get_gtt_alignment(struct drm_device *dev, |
| 1465 | uint32_t size, |
| 1466 | int tiling_mode) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1467 | { |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1468 | /* |
| 1469 | * Minimum alignment is 4k (GTT page size), but might be greater |
| 1470 | * if a fence register is needed for the object. |
| 1471 | */ |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 1472 | if (INTEL_INFO(dev)->gen >= 4 || |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1473 | tiling_mode == I915_TILING_NONE) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1474 | return 4096; |
| 1475 | |
| 1476 | /* |
| 1477 | * Previous chips need to be aligned to the size of the smallest |
| 1478 | * fence register that can contain the object. |
| 1479 | */ |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1480 | return i915_gem_get_gtt_size(dev, size, tiling_mode); |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 1481 | } |
| 1482 | |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 1483 | /** |
| 1484 | * i915_gem_get_unfenced_gtt_alignment - return required GTT alignment for an |
| 1485 | * unfenced object |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1486 | * @dev: the device |
| 1487 | * @size: size of the object |
| 1488 | * @tiling_mode: tiling mode of the object |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 1489 | * |
| 1490 | * Return the required GTT alignment for an object, only taking into account |
| 1491 | * unfenced tiled surface requirements. |
| 1492 | */ |
Chris Wilson | 467cffb | 2011-03-07 10:42:03 +0000 | [diff] [blame] | 1493 | uint32_t |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1494 | i915_gem_get_unfenced_gtt_alignment(struct drm_device *dev, |
| 1495 | uint32_t size, |
| 1496 | int tiling_mode) |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 1497 | { |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 1498 | /* |
| 1499 | * Minimum alignment is 4k (GTT page size) for sane hw. |
| 1500 | */ |
| 1501 | if (INTEL_INFO(dev)->gen >= 4 || IS_G33(dev) || |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1502 | tiling_mode == I915_TILING_NONE) |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 1503 | return 4096; |
| 1504 | |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1505 | /* Previous hardware however needs to be aligned to a power-of-two |
| 1506 | * tile height. The simplest method for determining this is to reuse |
| 1507 | * the power-of-tile object size. |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 1508 | */ |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1509 | return i915_gem_get_gtt_size(dev, size, tiling_mode); |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 1510 | } |
| 1511 | |
Chris Wilson | d8cb508 | 2012-08-11 15:41:03 +0100 | [diff] [blame] | 1512 | static int i915_gem_object_create_mmap_offset(struct drm_i915_gem_object *obj) |
| 1513 | { |
| 1514 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
| 1515 | int ret; |
| 1516 | |
| 1517 | if (obj->base.map_list.map) |
| 1518 | return 0; |
| 1519 | |
Daniel Vetter | da494d7 | 2012-12-20 15:11:16 +0100 | [diff] [blame] | 1520 | dev_priv->mm.shrinker_no_lock_stealing = true; |
| 1521 | |
Chris Wilson | d8cb508 | 2012-08-11 15:41:03 +0100 | [diff] [blame] | 1522 | ret = drm_gem_create_mmap_offset(&obj->base); |
| 1523 | if (ret != -ENOSPC) |
Daniel Vetter | da494d7 | 2012-12-20 15:11:16 +0100 | [diff] [blame] | 1524 | goto out; |
Chris Wilson | d8cb508 | 2012-08-11 15:41:03 +0100 | [diff] [blame] | 1525 | |
| 1526 | /* Badly fragmented mmap space? The only way we can recover |
| 1527 | * space is by destroying unwanted objects. We can't randomly release |
| 1528 | * mmap_offsets as userspace expects them to be persistent for the |
| 1529 | * lifetime of the objects. The closest we can is to release the |
| 1530 | * offsets on purgeable objects by truncating it and marking it purged, |
| 1531 | * which prevents userspace from ever using that object again. |
| 1532 | */ |
| 1533 | i915_gem_purge(dev_priv, obj->base.size >> PAGE_SHIFT); |
| 1534 | ret = drm_gem_create_mmap_offset(&obj->base); |
| 1535 | if (ret != -ENOSPC) |
Daniel Vetter | da494d7 | 2012-12-20 15:11:16 +0100 | [diff] [blame] | 1536 | goto out; |
Chris Wilson | d8cb508 | 2012-08-11 15:41:03 +0100 | [diff] [blame] | 1537 | |
| 1538 | i915_gem_shrink_all(dev_priv); |
Daniel Vetter | da494d7 | 2012-12-20 15:11:16 +0100 | [diff] [blame] | 1539 | ret = drm_gem_create_mmap_offset(&obj->base); |
| 1540 | out: |
| 1541 | dev_priv->mm.shrinker_no_lock_stealing = false; |
| 1542 | |
| 1543 | return ret; |
Chris Wilson | d8cb508 | 2012-08-11 15:41:03 +0100 | [diff] [blame] | 1544 | } |
| 1545 | |
| 1546 | static void i915_gem_object_free_mmap_offset(struct drm_i915_gem_object *obj) |
| 1547 | { |
| 1548 | if (!obj->base.map_list.map) |
| 1549 | return; |
| 1550 | |
| 1551 | drm_gem_free_mmap_offset(&obj->base); |
| 1552 | } |
| 1553 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1554 | int |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 1555 | i915_gem_mmap_gtt(struct drm_file *file, |
| 1556 | struct drm_device *dev, |
| 1557 | uint32_t handle, |
| 1558 | uint64_t *offset) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1559 | { |
Chris Wilson | da761a6 | 2010-10-27 17:37:08 +0100 | [diff] [blame] | 1560 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1561 | struct drm_i915_gem_object *obj; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1562 | int ret; |
| 1563 | |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1564 | ret = i915_mutex_lock_interruptible(dev); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1565 | if (ret) |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1566 | return ret; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1567 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 1568 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 1569 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1570 | ret = -ENOENT; |
| 1571 | goto unlock; |
| 1572 | } |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1573 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1574 | if (obj->base.size > dev_priv->mm.gtt_mappable_end) { |
Chris Wilson | da761a6 | 2010-10-27 17:37:08 +0100 | [diff] [blame] | 1575 | ret = -E2BIG; |
Eric Anholt | ff56b0b | 2011-10-31 23:16:21 -0700 | [diff] [blame] | 1576 | goto out; |
Chris Wilson | da761a6 | 2010-10-27 17:37:08 +0100 | [diff] [blame] | 1577 | } |
| 1578 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1579 | if (obj->madv != I915_MADV_WILLNEED) { |
Chris Wilson | ab18282 | 2009-09-22 18:46:17 +0100 | [diff] [blame] | 1580 | DRM_ERROR("Attempting to mmap a purgeable buffer\n"); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1581 | ret = -EINVAL; |
| 1582 | goto out; |
Chris Wilson | ab18282 | 2009-09-22 18:46:17 +0100 | [diff] [blame] | 1583 | } |
| 1584 | |
Chris Wilson | d8cb508 | 2012-08-11 15:41:03 +0100 | [diff] [blame] | 1585 | ret = i915_gem_object_create_mmap_offset(obj); |
| 1586 | if (ret) |
| 1587 | goto out; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1588 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 1589 | *offset = (u64)obj->base.map_list.hash.key << PAGE_SHIFT; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1590 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1591 | out: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1592 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1593 | unlock: |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1594 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1595 | return ret; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1596 | } |
| 1597 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 1598 | /** |
| 1599 | * i915_gem_mmap_gtt_ioctl - prepare an object for GTT mmap'ing |
| 1600 | * @dev: DRM device |
| 1601 | * @data: GTT mapping ioctl data |
| 1602 | * @file: GEM object info |
| 1603 | * |
| 1604 | * Simply returns the fake offset to userspace so it can mmap it. |
| 1605 | * The mmap call will end up in drm_gem_mmap(), which will set things |
| 1606 | * up so we can get faults in the handler above. |
| 1607 | * |
| 1608 | * The fault handler will take care of binding the object into the GTT |
| 1609 | * (since it may have been evicted to make room for something), allocating |
| 1610 | * a fence register, and mapping the appropriate aperture address into |
| 1611 | * userspace. |
| 1612 | */ |
| 1613 | int |
| 1614 | i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data, |
| 1615 | struct drm_file *file) |
| 1616 | { |
| 1617 | struct drm_i915_gem_mmap_gtt *args = data; |
| 1618 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 1619 | return i915_gem_mmap_gtt(file, dev, args->handle, &args->offset); |
| 1620 | } |
| 1621 | |
Daniel Vetter | 225067e | 2012-08-20 10:23:20 +0200 | [diff] [blame] | 1622 | /* Immediately discard the backing storage */ |
| 1623 | static void |
| 1624 | i915_gem_object_truncate(struct drm_i915_gem_object *obj) |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1625 | { |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1626 | struct inode *inode; |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1627 | |
Chris Wilson | 4d6294bf | 2012-08-11 15:41:05 +0100 | [diff] [blame] | 1628 | i915_gem_object_free_mmap_offset(obj); |
Daniel Vetter | 1286ff7 | 2012-05-10 15:25:09 +0200 | [diff] [blame] | 1629 | |
Chris Wilson | 4d6294bf | 2012-08-11 15:41:05 +0100 | [diff] [blame] | 1630 | if (obj->base.filp == NULL) |
| 1631 | return; |
| 1632 | |
Daniel Vetter | 225067e | 2012-08-20 10:23:20 +0200 | [diff] [blame] | 1633 | /* Our goal here is to return as much of the memory as |
| 1634 | * is possible back to the system as we are called from OOM. |
| 1635 | * To do this we must instruct the shmfs to drop all of its |
| 1636 | * backing pages, *now*. |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1637 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1638 | inode = obj->base.filp->f_path.dentry->d_inode; |
Daniel Vetter | 225067e | 2012-08-20 10:23:20 +0200 | [diff] [blame] | 1639 | shmem_truncate_range(inode, 0, (loff_t)-1); |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 1640 | |
Daniel Vetter | 225067e | 2012-08-20 10:23:20 +0200 | [diff] [blame] | 1641 | obj->madv = __I915_MADV_PURGED; |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1642 | } |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1643 | |
Daniel Vetter | 225067e | 2012-08-20 10:23:20 +0200 | [diff] [blame] | 1644 | static inline int |
| 1645 | i915_gem_object_is_purgeable(struct drm_i915_gem_object *obj) |
| 1646 | { |
| 1647 | return obj->madv == I915_MADV_DONTNEED; |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1648 | } |
| 1649 | |
Chris Wilson | 5cdf588 | 2010-09-27 15:51:07 +0100 | [diff] [blame] | 1650 | static void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1651 | i915_gem_object_put_pages_gtt(struct drm_i915_gem_object *obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1652 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1653 | int page_count = obj->base.size / PAGE_SIZE; |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1654 | struct scatterlist *sg; |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1655 | int ret, i; |
Daniel Vetter | 1286ff7 | 2012-05-10 15:25:09 +0200 | [diff] [blame] | 1656 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1657 | BUG_ON(obj->madv == __I915_MADV_PURGED); |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 1658 | |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1659 | ret = i915_gem_object_set_to_cpu_domain(obj, true); |
| 1660 | if (ret) { |
| 1661 | /* In the event of a disaster, abandon all caches and |
| 1662 | * hope for the best. |
| 1663 | */ |
| 1664 | WARN_ON(ret != -EIO); |
| 1665 | i915_gem_clflush_object(obj); |
| 1666 | obj->base.read_domains = obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
| 1667 | } |
| 1668 | |
Daniel Vetter | 6dacfd2 | 2011-09-12 21:30:02 +0200 | [diff] [blame] | 1669 | if (i915_gem_object_needs_bit17_swizzle(obj)) |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 1670 | i915_gem_object_save_bit_17_swizzle(obj); |
| 1671 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1672 | if (obj->madv == I915_MADV_DONTNEED) |
| 1673 | obj->dirty = 0; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 1674 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1675 | for_each_sg(obj->pages->sgl, sg, page_count, i) { |
| 1676 | struct page *page = sg_page(sg); |
| 1677 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1678 | if (obj->dirty) |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1679 | set_page_dirty(page); |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 1680 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1681 | if (obj->madv == I915_MADV_WILLNEED) |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1682 | mark_page_accessed(page); |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 1683 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1684 | page_cache_release(page); |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 1685 | } |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1686 | obj->dirty = 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1687 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1688 | sg_free_table(obj->pages); |
| 1689 | kfree(obj->pages); |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 1690 | } |
| 1691 | |
| 1692 | static int |
| 1693 | i915_gem_object_put_pages(struct drm_i915_gem_object *obj) |
| 1694 | { |
| 1695 | const struct drm_i915_gem_object_ops *ops = obj->ops; |
| 1696 | |
Chris Wilson | 2f745ad | 2012-09-04 21:02:58 +0100 | [diff] [blame] | 1697 | if (obj->pages == NULL) |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 1698 | return 0; |
| 1699 | |
| 1700 | BUG_ON(obj->gtt_space); |
| 1701 | |
Chris Wilson | a557017 | 2012-09-04 21:02:54 +0100 | [diff] [blame] | 1702 | if (obj->pages_pin_count) |
| 1703 | return -EBUSY; |
| 1704 | |
Chris Wilson | a2165e3 | 2012-12-03 11:49:00 +0000 | [diff] [blame] | 1705 | /* ->put_pages might need to allocate memory for the bit17 swizzle |
| 1706 | * array, hence protect them from being reaped by removing them from gtt |
| 1707 | * lists early. */ |
| 1708 | list_del(&obj->gtt_list); |
| 1709 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 1710 | ops->put_pages(obj); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1711 | obj->pages = NULL; |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1712 | |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1713 | if (i915_gem_object_is_purgeable(obj)) |
| 1714 | i915_gem_object_truncate(obj); |
| 1715 | |
| 1716 | return 0; |
| 1717 | } |
| 1718 | |
| 1719 | static long |
| 1720 | i915_gem_purge(struct drm_i915_private *dev_priv, long target) |
| 1721 | { |
| 1722 | struct drm_i915_gem_object *obj, *next; |
| 1723 | long count = 0; |
| 1724 | |
| 1725 | list_for_each_entry_safe(obj, next, |
| 1726 | &dev_priv->mm.unbound_list, |
| 1727 | gtt_list) { |
| 1728 | if (i915_gem_object_is_purgeable(obj) && |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 1729 | i915_gem_object_put_pages(obj) == 0) { |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1730 | count += obj->base.size >> PAGE_SHIFT; |
| 1731 | if (count >= target) |
| 1732 | return count; |
| 1733 | } |
| 1734 | } |
| 1735 | |
| 1736 | list_for_each_entry_safe(obj, next, |
| 1737 | &dev_priv->mm.inactive_list, |
| 1738 | mm_list) { |
| 1739 | if (i915_gem_object_is_purgeable(obj) && |
| 1740 | i915_gem_object_unbind(obj) == 0 && |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 1741 | i915_gem_object_put_pages(obj) == 0) { |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1742 | count += obj->base.size >> PAGE_SHIFT; |
| 1743 | if (count >= target) |
| 1744 | return count; |
| 1745 | } |
| 1746 | } |
| 1747 | |
| 1748 | return count; |
| 1749 | } |
| 1750 | |
| 1751 | static void |
| 1752 | i915_gem_shrink_all(struct drm_i915_private *dev_priv) |
| 1753 | { |
| 1754 | struct drm_i915_gem_object *obj, *next; |
| 1755 | |
| 1756 | i915_gem_evict_everything(dev_priv->dev); |
| 1757 | |
| 1758 | list_for_each_entry_safe(obj, next, &dev_priv->mm.unbound_list, gtt_list) |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 1759 | i915_gem_object_put_pages(obj); |
Daniel Vetter | 225067e | 2012-08-20 10:23:20 +0200 | [diff] [blame] | 1760 | } |
| 1761 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 1762 | static int |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1763 | i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1764 | { |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1765 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1766 | int page_count, i; |
| 1767 | struct address_space *mapping; |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1768 | struct sg_table *st; |
| 1769 | struct scatterlist *sg; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1770 | struct page *page; |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1771 | gfp_t gfp; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1772 | |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1773 | /* Assert that the object is not currently in any GPU domain. As it |
| 1774 | * wasn't in the GTT, there shouldn't be any way it could have been in |
| 1775 | * a GPU cache |
| 1776 | */ |
| 1777 | BUG_ON(obj->base.read_domains & I915_GEM_GPU_DOMAINS); |
| 1778 | BUG_ON(obj->base.write_domain & I915_GEM_GPU_DOMAINS); |
| 1779 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1780 | st = kmalloc(sizeof(*st), GFP_KERNEL); |
| 1781 | if (st == NULL) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1782 | return -ENOMEM; |
| 1783 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1784 | page_count = obj->base.size / PAGE_SIZE; |
| 1785 | if (sg_alloc_table(st, page_count, GFP_KERNEL)) { |
| 1786 | sg_free_table(st); |
| 1787 | kfree(st); |
| 1788 | return -ENOMEM; |
| 1789 | } |
| 1790 | |
| 1791 | /* Get the list of pages out of our struct file. They'll be pinned |
| 1792 | * at this point until we release them. |
| 1793 | * |
| 1794 | * Fail silently without starting the shrinker |
| 1795 | */ |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1796 | mapping = obj->base.filp->f_path.dentry->d_inode->i_mapping; |
| 1797 | gfp = mapping_gfp_mask(mapping); |
Linus Torvalds | caf4919 | 2012-12-10 10:51:16 -0800 | [diff] [blame] | 1798 | gfp |= __GFP_NORETRY | __GFP_NOWARN | __GFP_NO_KSWAPD; |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1799 | gfp &= ~(__GFP_IO | __GFP_WAIT); |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1800 | for_each_sg(st->sgl, sg, page_count, i) { |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1801 | page = shmem_read_mapping_page_gfp(mapping, i, gfp); |
| 1802 | if (IS_ERR(page)) { |
| 1803 | i915_gem_purge(dev_priv, page_count); |
| 1804 | page = shmem_read_mapping_page_gfp(mapping, i, gfp); |
| 1805 | } |
| 1806 | if (IS_ERR(page)) { |
| 1807 | /* We've tried hard to allocate the memory by reaping |
| 1808 | * our own buffer, now let the real VM do its job and |
| 1809 | * go down in flames if truly OOM. |
| 1810 | */ |
Linus Torvalds | caf4919 | 2012-12-10 10:51:16 -0800 | [diff] [blame] | 1811 | gfp &= ~(__GFP_NORETRY | __GFP_NOWARN | __GFP_NO_KSWAPD); |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1812 | gfp |= __GFP_IO | __GFP_WAIT; |
| 1813 | |
| 1814 | i915_gem_shrink_all(dev_priv); |
| 1815 | page = shmem_read_mapping_page_gfp(mapping, i, gfp); |
| 1816 | if (IS_ERR(page)) |
| 1817 | goto err_pages; |
| 1818 | |
Linus Torvalds | caf4919 | 2012-12-10 10:51:16 -0800 | [diff] [blame] | 1819 | gfp |= __GFP_NORETRY | __GFP_NOWARN | __GFP_NO_KSWAPD; |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1820 | gfp &= ~(__GFP_IO | __GFP_WAIT); |
| 1821 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1822 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1823 | sg_set_page(sg, page, PAGE_SIZE, 0); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1824 | } |
| 1825 | |
Chris Wilson | 74ce6b6 | 2012-10-19 15:51:06 +0100 | [diff] [blame] | 1826 | obj->pages = st; |
| 1827 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1828 | if (i915_gem_object_needs_bit17_swizzle(obj)) |
| 1829 | i915_gem_object_do_bit_17_swizzle(obj); |
| 1830 | |
| 1831 | return 0; |
| 1832 | |
| 1833 | err_pages: |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1834 | for_each_sg(st->sgl, sg, i, page_count) |
| 1835 | page_cache_release(sg_page(sg)); |
| 1836 | sg_free_table(st); |
| 1837 | kfree(st); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1838 | return PTR_ERR(page); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1839 | } |
| 1840 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 1841 | /* Ensure that the associated pages are gathered from the backing storage |
| 1842 | * and pinned into our object. i915_gem_object_get_pages() may be called |
| 1843 | * multiple times before they are released by a single call to |
| 1844 | * i915_gem_object_put_pages() - once the pages are no longer referenced |
| 1845 | * either as a result of memory pressure (reaping pages under the shrinker) |
| 1846 | * or as the object is itself released. |
| 1847 | */ |
| 1848 | int |
| 1849 | i915_gem_object_get_pages(struct drm_i915_gem_object *obj) |
| 1850 | { |
| 1851 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
| 1852 | const struct drm_i915_gem_object_ops *ops = obj->ops; |
| 1853 | int ret; |
| 1854 | |
Chris Wilson | 2f745ad | 2012-09-04 21:02:58 +0100 | [diff] [blame] | 1855 | if (obj->pages) |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 1856 | return 0; |
| 1857 | |
Chris Wilson | a557017 | 2012-09-04 21:02:54 +0100 | [diff] [blame] | 1858 | BUG_ON(obj->pages_pin_count); |
| 1859 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 1860 | ret = ops->get_pages(obj); |
| 1861 | if (ret) |
| 1862 | return ret; |
| 1863 | |
| 1864 | list_add_tail(&obj->gtt_list, &dev_priv->mm.unbound_list); |
| 1865 | return 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1866 | } |
| 1867 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1868 | void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1869 | i915_gem_object_move_to_active(struct drm_i915_gem_object *obj, |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 1870 | struct intel_ring_buffer *ring) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1871 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1872 | struct drm_device *dev = obj->base.dev; |
Chris Wilson | 69dc498 | 2010-10-19 10:36:51 +0100 | [diff] [blame] | 1873 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 1874 | u32 seqno = intel_ring_get_seqno(ring); |
Daniel Vetter | 617dbe2 | 2010-02-11 22:16:02 +0100 | [diff] [blame] | 1875 | |
Zou Nan hai | 852835f | 2010-05-21 09:08:56 +0800 | [diff] [blame] | 1876 | BUG_ON(ring == NULL); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1877 | obj->ring = ring; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1878 | |
| 1879 | /* Add a reference if we're newly entering the active list. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1880 | if (!obj->active) { |
| 1881 | drm_gem_object_reference(&obj->base); |
| 1882 | obj->active = 1; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1883 | } |
Daniel Vetter | e35a41d | 2010-02-11 22:13:59 +0100 | [diff] [blame] | 1884 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1885 | /* Move from whatever list we were on to the tail of execution. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1886 | list_move_tail(&obj->mm_list, &dev_priv->mm.active_list); |
| 1887 | list_move_tail(&obj->ring_list, &ring->active_list); |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 1888 | |
Chris Wilson | 0201f1e | 2012-07-20 12:41:01 +0100 | [diff] [blame] | 1889 | obj->last_read_seqno = seqno; |
Chris Wilson | 7dd4906 | 2012-03-21 10:48:18 +0000 | [diff] [blame] | 1890 | |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 1891 | if (obj->fenced_gpu_access) { |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 1892 | obj->last_fenced_seqno = seqno; |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 1893 | |
Chris Wilson | 7dd4906 | 2012-03-21 10:48:18 +0000 | [diff] [blame] | 1894 | /* Bump MRU to take account of the delayed flush */ |
| 1895 | if (obj->fence_reg != I915_FENCE_REG_NONE) { |
| 1896 | struct drm_i915_fence_reg *reg; |
| 1897 | |
| 1898 | reg = &dev_priv->fence_regs[obj->fence_reg]; |
| 1899 | list_move_tail(®->lru_list, |
| 1900 | &dev_priv->mm.fence_list); |
| 1901 | } |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 1902 | } |
| 1903 | } |
| 1904 | |
| 1905 | static void |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 1906 | i915_gem_object_move_to_inactive(struct drm_i915_gem_object *obj) |
| 1907 | { |
| 1908 | struct drm_device *dev = obj->base.dev; |
| 1909 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1910 | |
Chris Wilson | 65ce302 | 2012-07-20 12:41:02 +0100 | [diff] [blame] | 1911 | BUG_ON(obj->base.write_domain & ~I915_GEM_GPU_DOMAINS); |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 1912 | BUG_ON(!obj->active); |
Chris Wilson | 65ce302 | 2012-07-20 12:41:02 +0100 | [diff] [blame] | 1913 | |
Chris Wilson | f047e39 | 2012-07-21 12:31:41 +0100 | [diff] [blame] | 1914 | if (obj->pin_count) /* are we a framebuffer? */ |
| 1915 | intel_mark_fb_idle(obj); |
| 1916 | |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 1917 | list_move_tail(&obj->mm_list, &dev_priv->mm.inactive_list); |
| 1918 | |
Chris Wilson | 65ce302 | 2012-07-20 12:41:02 +0100 | [diff] [blame] | 1919 | list_del_init(&obj->ring_list); |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 1920 | obj->ring = NULL; |
| 1921 | |
Chris Wilson | 65ce302 | 2012-07-20 12:41:02 +0100 | [diff] [blame] | 1922 | obj->last_read_seqno = 0; |
| 1923 | obj->last_write_seqno = 0; |
| 1924 | obj->base.write_domain = 0; |
| 1925 | |
| 1926 | obj->last_fenced_seqno = 0; |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 1927 | obj->fenced_gpu_access = false; |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 1928 | |
| 1929 | obj->active = 0; |
| 1930 | drm_gem_object_unreference(&obj->base); |
| 1931 | |
| 1932 | WARN_ON(i915_verify_lists(dev)); |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 1933 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1934 | |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 1935 | static int |
| 1936 | i915_gem_handle_seqno_wrap(struct drm_device *dev) |
Daniel Vetter | 53d227f | 2012-01-25 16:32:49 +0100 | [diff] [blame] | 1937 | { |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 1938 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1939 | struct intel_ring_buffer *ring; |
| 1940 | int ret, i, j; |
Daniel Vetter | 53d227f | 2012-01-25 16:32:49 +0100 | [diff] [blame] | 1941 | |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 1942 | /* The hardware uses various monotonic 32-bit counters, if we |
| 1943 | * detect that they will wraparound we need to idle the GPU |
| 1944 | * and reset those counters. |
| 1945 | */ |
| 1946 | ret = 0; |
| 1947 | for_each_ring(ring, dev_priv, i) { |
| 1948 | for (j = 0; j < ARRAY_SIZE(ring->sync_seqno); j++) |
| 1949 | ret |= ring->sync_seqno[j] != 0; |
| 1950 | } |
| 1951 | if (ret == 0) |
| 1952 | return ret; |
Daniel Vetter | 53d227f | 2012-01-25 16:32:49 +0100 | [diff] [blame] | 1953 | |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 1954 | ret = i915_gpu_idle(dev); |
| 1955 | if (ret) |
| 1956 | return ret; |
| 1957 | |
| 1958 | i915_gem_retire_requests(dev); |
| 1959 | for_each_ring(ring, dev_priv, i) { |
| 1960 | for (j = 0; j < ARRAY_SIZE(ring->sync_seqno); j++) |
| 1961 | ring->sync_seqno[j] = 0; |
| 1962 | } |
| 1963 | |
| 1964 | return 0; |
Daniel Vetter | 53d227f | 2012-01-25 16:32:49 +0100 | [diff] [blame] | 1965 | } |
| 1966 | |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 1967 | int |
| 1968 | i915_gem_get_seqno(struct drm_device *dev, u32 *seqno) |
Daniel Vetter | 53d227f | 2012-01-25 16:32:49 +0100 | [diff] [blame] | 1969 | { |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 1970 | struct drm_i915_private *dev_priv = dev->dev_private; |
Daniel Vetter | 53d227f | 2012-01-25 16:32:49 +0100 | [diff] [blame] | 1971 | |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 1972 | /* reserve 0 for non-seqno */ |
| 1973 | if (dev_priv->next_seqno == 0) { |
| 1974 | int ret = i915_gem_handle_seqno_wrap(dev); |
| 1975 | if (ret) |
| 1976 | return ret; |
| 1977 | |
| 1978 | dev_priv->next_seqno = 1; |
| 1979 | } |
| 1980 | |
| 1981 | *seqno = dev_priv->next_seqno++; |
| 1982 | return 0; |
Daniel Vetter | 53d227f | 2012-01-25 16:32:49 +0100 | [diff] [blame] | 1983 | } |
| 1984 | |
Chris Wilson | 3cce469 | 2010-10-27 16:11:02 +0100 | [diff] [blame] | 1985 | int |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1986 | i915_add_request(struct intel_ring_buffer *ring, |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 1987 | struct drm_file *file, |
Chris Wilson | acb868d | 2012-09-26 13:47:30 +0100 | [diff] [blame] | 1988 | u32 *out_seqno) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1989 | { |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1990 | drm_i915_private_t *dev_priv = ring->dev->dev_private; |
Chris Wilson | acb868d | 2012-09-26 13:47:30 +0100 | [diff] [blame] | 1991 | struct drm_i915_gem_request *request; |
Chris Wilson | a71d8d9 | 2012-02-15 11:25:36 +0000 | [diff] [blame] | 1992 | u32 request_ring_position; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1993 | int was_empty; |
Chris Wilson | 3cce469 | 2010-10-27 16:11:02 +0100 | [diff] [blame] | 1994 | int ret; |
| 1995 | |
Daniel Vetter | cc889e0 | 2012-06-13 20:45:19 +0200 | [diff] [blame] | 1996 | /* |
| 1997 | * Emit any outstanding flushes - execbuf can fail to emit the flush |
| 1998 | * after having emitted the batchbuffer command. Hence we need to fix |
| 1999 | * things up similar to emitting the lazy request. The difference here |
| 2000 | * is that the flush _must_ happen before the next request, no matter |
| 2001 | * what. |
| 2002 | */ |
Chris Wilson | a7b9761 | 2012-07-20 12:41:08 +0100 | [diff] [blame] | 2003 | ret = intel_ring_flush_all_caches(ring); |
| 2004 | if (ret) |
| 2005 | return ret; |
Daniel Vetter | cc889e0 | 2012-06-13 20:45:19 +0200 | [diff] [blame] | 2006 | |
Chris Wilson | acb868d | 2012-09-26 13:47:30 +0100 | [diff] [blame] | 2007 | request = kmalloc(sizeof(*request), GFP_KERNEL); |
| 2008 | if (request == NULL) |
| 2009 | return -ENOMEM; |
Daniel Vetter | cc889e0 | 2012-06-13 20:45:19 +0200 | [diff] [blame] | 2010 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2011 | |
Chris Wilson | a71d8d9 | 2012-02-15 11:25:36 +0000 | [diff] [blame] | 2012 | /* Record the position of the start of the request so that |
| 2013 | * should we detect the updated seqno part-way through the |
| 2014 | * GPU processing the request, we never over-estimate the |
| 2015 | * position of the head. |
| 2016 | */ |
| 2017 | request_ring_position = intel_ring_get_tail(ring); |
| 2018 | |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 2019 | ret = ring->add_request(ring); |
Chris Wilson | 3bb73ab | 2012-07-20 12:40:59 +0100 | [diff] [blame] | 2020 | if (ret) { |
| 2021 | kfree(request); |
| 2022 | return ret; |
| 2023 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2024 | |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 2025 | request->seqno = intel_ring_get_seqno(ring); |
Zou Nan hai | 852835f | 2010-05-21 09:08:56 +0800 | [diff] [blame] | 2026 | request->ring = ring; |
Chris Wilson | a71d8d9 | 2012-02-15 11:25:36 +0000 | [diff] [blame] | 2027 | request->tail = request_ring_position; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2028 | request->emitted_jiffies = jiffies; |
Zou Nan hai | 852835f | 2010-05-21 09:08:56 +0800 | [diff] [blame] | 2029 | was_empty = list_empty(&ring->request_list); |
| 2030 | list_add_tail(&request->list, &ring->request_list); |
Chris Wilson | 3bb73ab | 2012-07-20 12:40:59 +0100 | [diff] [blame] | 2031 | request->file_priv = NULL; |
Zou Nan hai | 852835f | 2010-05-21 09:08:56 +0800 | [diff] [blame] | 2032 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2033 | if (file) { |
| 2034 | struct drm_i915_file_private *file_priv = file->driver_priv; |
| 2035 | |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 2036 | spin_lock(&file_priv->mm.lock); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 2037 | request->file_priv = file_priv; |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 2038 | list_add_tail(&request->client_list, |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 2039 | &file_priv->mm.request_list); |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 2040 | spin_unlock(&file_priv->mm.lock); |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 2041 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2042 | |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 2043 | trace_i915_gem_request_add(ring, request->seqno); |
Daniel Vetter | 5391d0c | 2012-01-25 14:03:57 +0100 | [diff] [blame] | 2044 | ring->outstanding_lazy_request = 0; |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2045 | |
Ben Gamari | f65d942 | 2009-09-14 17:48:44 -0400 | [diff] [blame] | 2046 | if (!dev_priv->mm.suspended) { |
Ben Widawsky | 3e0dc6b | 2011-06-29 10:26:42 -0700 | [diff] [blame] | 2047 | if (i915_enable_hangcheck) { |
| 2048 | mod_timer(&dev_priv->hangcheck_timer, |
Chris Wilson | cecc21f | 2012-10-05 17:02:56 +0100 | [diff] [blame] | 2049 | round_jiffies_up(jiffies + DRM_I915_HANGCHECK_JIFFIES)); |
Ben Widawsky | 3e0dc6b | 2011-06-29 10:26:42 -0700 | [diff] [blame] | 2050 | } |
Chris Wilson | f047e39 | 2012-07-21 12:31:41 +0100 | [diff] [blame] | 2051 | if (was_empty) { |
Chris Wilson | b3b079d | 2010-09-13 23:44:34 +0100 | [diff] [blame] | 2052 | queue_delayed_work(dev_priv->wq, |
Chris Wilson | bcb4508 | 2012-10-05 17:02:57 +0100 | [diff] [blame] | 2053 | &dev_priv->mm.retire_work, |
| 2054 | round_jiffies_up_relative(HZ)); |
Chris Wilson | f047e39 | 2012-07-21 12:31:41 +0100 | [diff] [blame] | 2055 | intel_mark_busy(dev_priv->dev); |
| 2056 | } |
Ben Gamari | f65d942 | 2009-09-14 17:48:44 -0400 | [diff] [blame] | 2057 | } |
Daniel Vetter | cc889e0 | 2012-06-13 20:45:19 +0200 | [diff] [blame] | 2058 | |
Chris Wilson | acb868d | 2012-09-26 13:47:30 +0100 | [diff] [blame] | 2059 | if (out_seqno) |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 2060 | *out_seqno = request->seqno; |
Chris Wilson | 3cce469 | 2010-10-27 16:11:02 +0100 | [diff] [blame] | 2061 | return 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2062 | } |
| 2063 | |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 2064 | static inline void |
| 2065 | i915_gem_request_remove_from_client(struct drm_i915_gem_request *request) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2066 | { |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 2067 | struct drm_i915_file_private *file_priv = request->file_priv; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2068 | |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 2069 | if (!file_priv) |
| 2070 | return; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2071 | |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 2072 | spin_lock(&file_priv->mm.lock); |
Herton Ronaldo Krzesinski | 09bfa51 | 2011-03-17 13:45:12 +0000 | [diff] [blame] | 2073 | if (request->file_priv) { |
| 2074 | list_del(&request->client_list); |
| 2075 | request->file_priv = NULL; |
| 2076 | } |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 2077 | spin_unlock(&file_priv->mm.lock); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2078 | } |
| 2079 | |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 2080 | static void i915_gem_reset_ring_lists(struct drm_i915_private *dev_priv, |
| 2081 | struct intel_ring_buffer *ring) |
Chris Wilson | 9375e44 | 2010-09-19 12:21:28 +0100 | [diff] [blame] | 2082 | { |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 2083 | while (!list_empty(&ring->request_list)) { |
| 2084 | struct drm_i915_gem_request *request; |
Chris Wilson | 9375e44 | 2010-09-19 12:21:28 +0100 | [diff] [blame] | 2085 | |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 2086 | request = list_first_entry(&ring->request_list, |
| 2087 | struct drm_i915_gem_request, |
| 2088 | list); |
| 2089 | |
| 2090 | list_del(&request->list); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 2091 | i915_gem_request_remove_from_client(request); |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 2092 | kfree(request); |
| 2093 | } |
| 2094 | |
| 2095 | while (!list_empty(&ring->active_list)) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2096 | struct drm_i915_gem_object *obj; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2097 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2098 | obj = list_first_entry(&ring->active_list, |
| 2099 | struct drm_i915_gem_object, |
| 2100 | ring_list); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2101 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2102 | i915_gem_object_move_to_inactive(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2103 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2104 | } |
| 2105 | |
Chris Wilson | 312817a | 2010-11-22 11:50:11 +0000 | [diff] [blame] | 2106 | static void i915_gem_reset_fences(struct drm_device *dev) |
| 2107 | { |
| 2108 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2109 | int i; |
| 2110 | |
Daniel Vetter | 4b9de73 | 2011-10-09 21:52:02 +0200 | [diff] [blame] | 2111 | for (i = 0; i < dev_priv->num_fence_regs; i++) { |
Chris Wilson | 312817a | 2010-11-22 11:50:11 +0000 | [diff] [blame] | 2112 | struct drm_i915_fence_reg *reg = &dev_priv->fence_regs[i]; |
Chris Wilson | 7d2cb39 | 2010-11-27 17:38:29 +0000 | [diff] [blame] | 2113 | |
Chris Wilson | ada726c | 2012-04-17 15:31:32 +0100 | [diff] [blame] | 2114 | i915_gem_write_fence(dev, i, NULL); |
Chris Wilson | 7d2cb39 | 2010-11-27 17:38:29 +0000 | [diff] [blame] | 2115 | |
Chris Wilson | ada726c | 2012-04-17 15:31:32 +0100 | [diff] [blame] | 2116 | if (reg->obj) |
| 2117 | i915_gem_object_fence_lost(reg->obj); |
Chris Wilson | 7d2cb39 | 2010-11-27 17:38:29 +0000 | [diff] [blame] | 2118 | |
Chris Wilson | ada726c | 2012-04-17 15:31:32 +0100 | [diff] [blame] | 2119 | reg->pin_count = 0; |
| 2120 | reg->obj = NULL; |
| 2121 | INIT_LIST_HEAD(®->lru_list); |
Chris Wilson | 312817a | 2010-11-22 11:50:11 +0000 | [diff] [blame] | 2122 | } |
Chris Wilson | ada726c | 2012-04-17 15:31:32 +0100 | [diff] [blame] | 2123 | |
| 2124 | INIT_LIST_HEAD(&dev_priv->mm.fence_list); |
Chris Wilson | 312817a | 2010-11-22 11:50:11 +0000 | [diff] [blame] | 2125 | } |
| 2126 | |
Chris Wilson | 069efc1 | 2010-09-30 16:53:18 +0100 | [diff] [blame] | 2127 | void i915_gem_reset(struct drm_device *dev) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2128 | { |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 2129 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2130 | struct drm_i915_gem_object *obj; |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 2131 | struct intel_ring_buffer *ring; |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2132 | int i; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2133 | |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 2134 | for_each_ring(ring, dev_priv, i) |
| 2135 | i915_gem_reset_ring_lists(dev_priv, ring); |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 2136 | |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 2137 | /* Move everything out of the GPU domains to ensure we do any |
| 2138 | * necessary invalidation upon reuse. |
| 2139 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2140 | list_for_each_entry(obj, |
Chris Wilson | 77f0123 | 2010-09-19 12:31:36 +0100 | [diff] [blame] | 2141 | &dev_priv->mm.inactive_list, |
Chris Wilson | 69dc498 | 2010-10-19 10:36:51 +0100 | [diff] [blame] | 2142 | mm_list) |
Chris Wilson | 77f0123 | 2010-09-19 12:31:36 +0100 | [diff] [blame] | 2143 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2144 | obj->base.read_domains &= ~I915_GEM_GPU_DOMAINS; |
Chris Wilson | 77f0123 | 2010-09-19 12:31:36 +0100 | [diff] [blame] | 2145 | } |
Chris Wilson | 069efc1 | 2010-09-30 16:53:18 +0100 | [diff] [blame] | 2146 | |
| 2147 | /* The fence registers are invalidated so clear them out */ |
Chris Wilson | 312817a | 2010-11-22 11:50:11 +0000 | [diff] [blame] | 2148 | i915_gem_reset_fences(dev); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2149 | } |
| 2150 | |
| 2151 | /** |
| 2152 | * This function clears the request list as sequence numbers are passed. |
| 2153 | */ |
Chris Wilson | a71d8d9 | 2012-02-15 11:25:36 +0000 | [diff] [blame] | 2154 | void |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2155 | i915_gem_retire_requests_ring(struct intel_ring_buffer *ring) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2156 | { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2157 | uint32_t seqno; |
| 2158 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2159 | if (list_empty(&ring->request_list)) |
Karsten Wiese | 6c0594a | 2009-02-23 15:07:57 +0100 | [diff] [blame] | 2160 | return; |
| 2161 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2162 | WARN_ON(i915_verify_lists(ring->dev)); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2163 | |
Chris Wilson | b2eadbc | 2012-08-09 10:58:30 +0100 | [diff] [blame] | 2164 | seqno = ring->get_seqno(ring, true); |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2165 | |
Zou Nan hai | 852835f | 2010-05-21 09:08:56 +0800 | [diff] [blame] | 2166 | while (!list_empty(&ring->request_list)) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2167 | struct drm_i915_gem_request *request; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2168 | |
Zou Nan hai | 852835f | 2010-05-21 09:08:56 +0800 | [diff] [blame] | 2169 | request = list_first_entry(&ring->request_list, |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2170 | struct drm_i915_gem_request, |
| 2171 | list); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2172 | |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 2173 | if (!i915_seqno_passed(seqno, request->seqno)) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2174 | break; |
Chris Wilson | b84d5f0 | 2010-09-18 01:38:04 +0100 | [diff] [blame] | 2175 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2176 | trace_i915_gem_request_retire(ring, request->seqno); |
Chris Wilson | a71d8d9 | 2012-02-15 11:25:36 +0000 | [diff] [blame] | 2177 | /* We know the GPU must have read the request to have |
| 2178 | * sent us the seqno + interrupt, so use the position |
| 2179 | * of tail of the request to update the last known position |
| 2180 | * of the GPU head. |
| 2181 | */ |
| 2182 | ring->last_retired_head = request->tail; |
Chris Wilson | b84d5f0 | 2010-09-18 01:38:04 +0100 | [diff] [blame] | 2183 | |
| 2184 | list_del(&request->list); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 2185 | i915_gem_request_remove_from_client(request); |
Chris Wilson | b84d5f0 | 2010-09-18 01:38:04 +0100 | [diff] [blame] | 2186 | kfree(request); |
| 2187 | } |
| 2188 | |
| 2189 | /* Move any buffers on the active list that are no longer referenced |
| 2190 | * by the ringbuffer to the flushing/inactive lists as appropriate. |
| 2191 | */ |
| 2192 | while (!list_empty(&ring->active_list)) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2193 | struct drm_i915_gem_object *obj; |
Chris Wilson | b84d5f0 | 2010-09-18 01:38:04 +0100 | [diff] [blame] | 2194 | |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 2195 | obj = list_first_entry(&ring->active_list, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2196 | struct drm_i915_gem_object, |
| 2197 | ring_list); |
Chris Wilson | b84d5f0 | 2010-09-18 01:38:04 +0100 | [diff] [blame] | 2198 | |
Chris Wilson | 0201f1e | 2012-07-20 12:41:01 +0100 | [diff] [blame] | 2199 | if (!i915_seqno_passed(seqno, obj->last_read_seqno)) |
Chris Wilson | b84d5f0 | 2010-09-18 01:38:04 +0100 | [diff] [blame] | 2200 | break; |
| 2201 | |
Chris Wilson | 65ce302 | 2012-07-20 12:41:02 +0100 | [diff] [blame] | 2202 | i915_gem_object_move_to_inactive(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2203 | } |
Chris Wilson | 9d34e5d | 2009-09-24 05:26:06 +0100 | [diff] [blame] | 2204 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2205 | if (unlikely(ring->trace_irq_seqno && |
| 2206 | i915_seqno_passed(seqno, ring->trace_irq_seqno))) { |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2207 | ring->irq_put(ring); |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2208 | ring->trace_irq_seqno = 0; |
Chris Wilson | 9d34e5d | 2009-09-24 05:26:06 +0100 | [diff] [blame] | 2209 | } |
Chris Wilson | 23bc598 | 2010-09-29 16:10:57 +0100 | [diff] [blame] | 2210 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2211 | WARN_ON(i915_verify_lists(ring->dev)); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2212 | } |
| 2213 | |
| 2214 | void |
Chris Wilson | b09a1fe | 2010-07-23 23:18:49 +0100 | [diff] [blame] | 2215 | i915_gem_retire_requests(struct drm_device *dev) |
| 2216 | { |
| 2217 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 2218 | struct intel_ring_buffer *ring; |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2219 | int i; |
Chris Wilson | b09a1fe | 2010-07-23 23:18:49 +0100 | [diff] [blame] | 2220 | |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 2221 | for_each_ring(ring, dev_priv, i) |
| 2222 | i915_gem_retire_requests_ring(ring); |
Chris Wilson | b09a1fe | 2010-07-23 23:18:49 +0100 | [diff] [blame] | 2223 | } |
| 2224 | |
Daniel Vetter | 75ef9da | 2010-08-21 00:25:16 +0200 | [diff] [blame] | 2225 | static void |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2226 | i915_gem_retire_work_handler(struct work_struct *work) |
| 2227 | { |
| 2228 | drm_i915_private_t *dev_priv; |
| 2229 | struct drm_device *dev; |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 2230 | struct intel_ring_buffer *ring; |
Chris Wilson | 0a58705 | 2011-01-09 21:05:44 +0000 | [diff] [blame] | 2231 | bool idle; |
| 2232 | int i; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2233 | |
| 2234 | dev_priv = container_of(work, drm_i915_private_t, |
| 2235 | mm.retire_work.work); |
| 2236 | dev = dev_priv->dev; |
| 2237 | |
Chris Wilson | 891b48c | 2010-09-29 12:26:37 +0100 | [diff] [blame] | 2238 | /* Come back later if the device is busy... */ |
| 2239 | if (!mutex_trylock(&dev->struct_mutex)) { |
Chris Wilson | bcb4508 | 2012-10-05 17:02:57 +0100 | [diff] [blame] | 2240 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, |
| 2241 | round_jiffies_up_relative(HZ)); |
Chris Wilson | 891b48c | 2010-09-29 12:26:37 +0100 | [diff] [blame] | 2242 | return; |
| 2243 | } |
| 2244 | |
Chris Wilson | b09a1fe | 2010-07-23 23:18:49 +0100 | [diff] [blame] | 2245 | i915_gem_retire_requests(dev); |
Zou Nan hai | d1b851f | 2010-05-21 09:08:57 +0800 | [diff] [blame] | 2246 | |
Chris Wilson | 0a58705 | 2011-01-09 21:05:44 +0000 | [diff] [blame] | 2247 | /* Send a periodic flush down the ring so we don't hold onto GEM |
| 2248 | * objects indefinitely. |
| 2249 | */ |
| 2250 | idle = true; |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 2251 | for_each_ring(ring, dev_priv, i) { |
Chris Wilson | 3bb73ab | 2012-07-20 12:40:59 +0100 | [diff] [blame] | 2252 | if (ring->gpu_caches_dirty) |
| 2253 | i915_add_request(ring, NULL, NULL); |
Chris Wilson | 0a58705 | 2011-01-09 21:05:44 +0000 | [diff] [blame] | 2254 | |
| 2255 | idle &= list_empty(&ring->request_list); |
| 2256 | } |
| 2257 | |
| 2258 | if (!dev_priv->mm.suspended && !idle) |
Chris Wilson | bcb4508 | 2012-10-05 17:02:57 +0100 | [diff] [blame] | 2259 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, |
| 2260 | round_jiffies_up_relative(HZ)); |
Chris Wilson | f047e39 | 2012-07-21 12:31:41 +0100 | [diff] [blame] | 2261 | if (idle) |
| 2262 | intel_mark_idle(dev); |
Chris Wilson | 0a58705 | 2011-01-09 21:05:44 +0000 | [diff] [blame] | 2263 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2264 | mutex_unlock(&dev->struct_mutex); |
| 2265 | } |
| 2266 | |
Ben Widawsky | 5816d64 | 2012-04-11 11:18:19 -0700 | [diff] [blame] | 2267 | /** |
Daniel Vetter | 30dfebf | 2012-06-01 15:21:23 +0200 | [diff] [blame] | 2268 | * Ensures that an object will eventually get non-busy by flushing any required |
| 2269 | * write domains, emitting any outstanding lazy request and retiring and |
| 2270 | * completed requests. |
| 2271 | */ |
| 2272 | static int |
| 2273 | i915_gem_object_flush_active(struct drm_i915_gem_object *obj) |
| 2274 | { |
| 2275 | int ret; |
| 2276 | |
| 2277 | if (obj->active) { |
Chris Wilson | 0201f1e | 2012-07-20 12:41:01 +0100 | [diff] [blame] | 2278 | ret = i915_gem_check_olr(obj->ring, obj->last_read_seqno); |
Daniel Vetter | 30dfebf | 2012-06-01 15:21:23 +0200 | [diff] [blame] | 2279 | if (ret) |
| 2280 | return ret; |
| 2281 | |
Daniel Vetter | 30dfebf | 2012-06-01 15:21:23 +0200 | [diff] [blame] | 2282 | i915_gem_retire_requests_ring(obj->ring); |
| 2283 | } |
| 2284 | |
| 2285 | return 0; |
| 2286 | } |
| 2287 | |
| 2288 | /** |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2289 | * i915_gem_wait_ioctl - implements DRM_IOCTL_I915_GEM_WAIT |
| 2290 | * @DRM_IOCTL_ARGS: standard ioctl arguments |
| 2291 | * |
| 2292 | * Returns 0 if successful, else an error is returned with the remaining time in |
| 2293 | * the timeout parameter. |
| 2294 | * -ETIME: object is still busy after timeout |
| 2295 | * -ERESTARTSYS: signal interrupted the wait |
| 2296 | * -ENONENT: object doesn't exist |
| 2297 | * Also possible, but rare: |
| 2298 | * -EAGAIN: GPU wedged |
| 2299 | * -ENOMEM: damn |
| 2300 | * -ENODEV: Internal IRQ fail |
| 2301 | * -E?: The add request failed |
| 2302 | * |
| 2303 | * The wait ioctl with a timeout of 0 reimplements the busy ioctl. With any |
| 2304 | * non-zero timeout parameter the wait ioctl will wait for the given number of |
| 2305 | * nanoseconds on an object becoming unbusy. Since the wait itself does so |
| 2306 | * without holding struct_mutex the object may become re-busied before this |
| 2307 | * function completes. A similar but shorter * race condition exists in the busy |
| 2308 | * ioctl |
| 2309 | */ |
| 2310 | int |
| 2311 | i915_gem_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file) |
| 2312 | { |
| 2313 | struct drm_i915_gem_wait *args = data; |
| 2314 | struct drm_i915_gem_object *obj; |
| 2315 | struct intel_ring_buffer *ring = NULL; |
Ben Widawsky | eac1f14 | 2012-06-05 15:24:24 -0700 | [diff] [blame] | 2316 | struct timespec timeout_stack, *timeout = NULL; |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2317 | u32 seqno = 0; |
| 2318 | int ret = 0; |
| 2319 | |
Ben Widawsky | eac1f14 | 2012-06-05 15:24:24 -0700 | [diff] [blame] | 2320 | if (args->timeout_ns >= 0) { |
| 2321 | timeout_stack = ns_to_timespec(args->timeout_ns); |
| 2322 | timeout = &timeout_stack; |
| 2323 | } |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2324 | |
| 2325 | ret = i915_mutex_lock_interruptible(dev); |
| 2326 | if (ret) |
| 2327 | return ret; |
| 2328 | |
| 2329 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->bo_handle)); |
| 2330 | if (&obj->base == NULL) { |
| 2331 | mutex_unlock(&dev->struct_mutex); |
| 2332 | return -ENOENT; |
| 2333 | } |
| 2334 | |
Daniel Vetter | 30dfebf | 2012-06-01 15:21:23 +0200 | [diff] [blame] | 2335 | /* Need to make sure the object gets inactive eventually. */ |
| 2336 | ret = i915_gem_object_flush_active(obj); |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2337 | if (ret) |
| 2338 | goto out; |
| 2339 | |
| 2340 | if (obj->active) { |
Chris Wilson | 0201f1e | 2012-07-20 12:41:01 +0100 | [diff] [blame] | 2341 | seqno = obj->last_read_seqno; |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2342 | ring = obj->ring; |
| 2343 | } |
| 2344 | |
| 2345 | if (seqno == 0) |
| 2346 | goto out; |
| 2347 | |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2348 | /* Do this after OLR check to make sure we make forward progress polling |
| 2349 | * on this IOCTL with a 0 timeout (like busy ioctl) |
| 2350 | */ |
| 2351 | if (!args->timeout_ns) { |
| 2352 | ret = -ETIME; |
| 2353 | goto out; |
| 2354 | } |
| 2355 | |
| 2356 | drm_gem_object_unreference(&obj->base); |
| 2357 | mutex_unlock(&dev->struct_mutex); |
| 2358 | |
Ben Widawsky | eac1f14 | 2012-06-05 15:24:24 -0700 | [diff] [blame] | 2359 | ret = __wait_seqno(ring, seqno, true, timeout); |
| 2360 | if (timeout) { |
| 2361 | WARN_ON(!timespec_valid(timeout)); |
| 2362 | args->timeout_ns = timespec_to_ns(timeout); |
| 2363 | } |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2364 | return ret; |
| 2365 | |
| 2366 | out: |
| 2367 | drm_gem_object_unreference(&obj->base); |
| 2368 | mutex_unlock(&dev->struct_mutex); |
| 2369 | return ret; |
| 2370 | } |
| 2371 | |
| 2372 | /** |
Ben Widawsky | 5816d64 | 2012-04-11 11:18:19 -0700 | [diff] [blame] | 2373 | * i915_gem_object_sync - sync an object to a ring. |
| 2374 | * |
| 2375 | * @obj: object which may be in use on another ring. |
| 2376 | * @to: ring we wish to use the object on. May be NULL. |
| 2377 | * |
| 2378 | * This code is meant to abstract object synchronization with the GPU. |
| 2379 | * Calling with NULL implies synchronizing the object with the CPU |
| 2380 | * rather than a particular GPU ring. |
| 2381 | * |
| 2382 | * Returns 0 if successful, else propagates up the lower layer error. |
| 2383 | */ |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 2384 | int |
| 2385 | i915_gem_object_sync(struct drm_i915_gem_object *obj, |
| 2386 | struct intel_ring_buffer *to) |
| 2387 | { |
| 2388 | struct intel_ring_buffer *from = obj->ring; |
| 2389 | u32 seqno; |
| 2390 | int ret, idx; |
| 2391 | |
| 2392 | if (from == NULL || to == from) |
| 2393 | return 0; |
| 2394 | |
Ben Widawsky | 5816d64 | 2012-04-11 11:18:19 -0700 | [diff] [blame] | 2395 | if (to == NULL || !i915_semaphore_is_enabled(obj->base.dev)) |
Chris Wilson | 0201f1e | 2012-07-20 12:41:01 +0100 | [diff] [blame] | 2396 | return i915_gem_object_wait_rendering(obj, false); |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 2397 | |
| 2398 | idx = intel_ring_sync_index(from, to); |
| 2399 | |
Chris Wilson | 0201f1e | 2012-07-20 12:41:01 +0100 | [diff] [blame] | 2400 | seqno = obj->last_read_seqno; |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 2401 | if (seqno <= from->sync_seqno[idx]) |
| 2402 | return 0; |
| 2403 | |
Ben Widawsky | b4aca01 | 2012-04-25 20:50:12 -0700 | [diff] [blame] | 2404 | ret = i915_gem_check_olr(obj->ring, seqno); |
| 2405 | if (ret) |
| 2406 | return ret; |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 2407 | |
Ben Widawsky | 1500f7e | 2012-04-11 11:18:21 -0700 | [diff] [blame] | 2408 | ret = to->sync_to(to, from, seqno); |
Ben Widawsky | e3a5a22 | 2012-04-11 11:18:20 -0700 | [diff] [blame] | 2409 | if (!ret) |
Mika Kuoppala | 7b01e26 | 2012-11-28 17:18:45 +0200 | [diff] [blame] | 2410 | /* We use last_read_seqno because sync_to() |
| 2411 | * might have just caused seqno wrap under |
| 2412 | * the radar. |
| 2413 | */ |
| 2414 | from->sync_seqno[idx] = obj->last_read_seqno; |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 2415 | |
Ben Widawsky | e3a5a22 | 2012-04-11 11:18:20 -0700 | [diff] [blame] | 2416 | return ret; |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 2417 | } |
| 2418 | |
Chris Wilson | b5ffc9b | 2011-04-13 22:06:03 +0100 | [diff] [blame] | 2419 | static void i915_gem_object_finish_gtt(struct drm_i915_gem_object *obj) |
| 2420 | { |
| 2421 | u32 old_write_domain, old_read_domains; |
| 2422 | |
Chris Wilson | b5ffc9b | 2011-04-13 22:06:03 +0100 | [diff] [blame] | 2423 | /* Act a barrier for all accesses through the GTT */ |
| 2424 | mb(); |
| 2425 | |
| 2426 | /* Force a pagefault for domain tracking on next user access */ |
| 2427 | i915_gem_release_mmap(obj); |
| 2428 | |
Keith Packard | b97c3d9 | 2011-06-24 21:02:59 -0700 | [diff] [blame] | 2429 | if ((obj->base.read_domains & I915_GEM_DOMAIN_GTT) == 0) |
| 2430 | return; |
| 2431 | |
Chris Wilson | b5ffc9b | 2011-04-13 22:06:03 +0100 | [diff] [blame] | 2432 | old_read_domains = obj->base.read_domains; |
| 2433 | old_write_domain = obj->base.write_domain; |
| 2434 | |
| 2435 | obj->base.read_domains &= ~I915_GEM_DOMAIN_GTT; |
| 2436 | obj->base.write_domain &= ~I915_GEM_DOMAIN_GTT; |
| 2437 | |
| 2438 | trace_i915_gem_object_change_domain(obj, |
| 2439 | old_read_domains, |
| 2440 | old_write_domain); |
| 2441 | } |
| 2442 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2443 | /** |
| 2444 | * Unbinds an object from the GTT aperture. |
| 2445 | */ |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 2446 | int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2447 | i915_gem_object_unbind(struct drm_i915_gem_object *obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2448 | { |
Daniel Vetter | 7bddb01 | 2012-02-09 17:15:47 +0100 | [diff] [blame] | 2449 | drm_i915_private_t *dev_priv = obj->base.dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2450 | int ret = 0; |
| 2451 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2452 | if (obj->gtt_space == NULL) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2453 | return 0; |
| 2454 | |
Chris Wilson | 31d8d65 | 2012-05-24 19:11:20 +0100 | [diff] [blame] | 2455 | if (obj->pin_count) |
| 2456 | return -EBUSY; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2457 | |
Chris Wilson | c4670ad | 2012-08-20 10:23:27 +0100 | [diff] [blame] | 2458 | BUG_ON(obj->pages == NULL); |
| 2459 | |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 2460 | ret = i915_gem_object_finish_gpu(obj); |
Chris Wilson | 1488fc0 | 2012-04-24 15:47:31 +0100 | [diff] [blame] | 2461 | if (ret) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2462 | return ret; |
Chris Wilson | 8dc1775 | 2010-07-23 23:18:51 +0100 | [diff] [blame] | 2463 | /* Continue on if we fail due to EIO, the GPU is hung so we |
| 2464 | * should be safe and we need to cleanup or else we might |
| 2465 | * cause memory corruption through use-after-free. |
| 2466 | */ |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 2467 | |
Chris Wilson | b5ffc9b | 2011-04-13 22:06:03 +0100 | [diff] [blame] | 2468 | i915_gem_object_finish_gtt(obj); |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 2469 | |
Daniel Vetter | 96b47b6 | 2009-12-15 17:50:00 +0100 | [diff] [blame] | 2470 | /* release the fence reg _after_ flushing */ |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2471 | ret = i915_gem_object_put_fence(obj); |
Chris Wilson | 1488fc0 | 2012-04-24 15:47:31 +0100 | [diff] [blame] | 2472 | if (ret) |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2473 | return ret; |
Daniel Vetter | 96b47b6 | 2009-12-15 17:50:00 +0100 | [diff] [blame] | 2474 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2475 | trace_i915_gem_object_unbind(obj); |
| 2476 | |
Daniel Vetter | 74898d7 | 2012-02-15 23:50:22 +0100 | [diff] [blame] | 2477 | if (obj->has_global_gtt_mapping) |
| 2478 | i915_gem_gtt_unbind_object(obj); |
Daniel Vetter | 7bddb01 | 2012-02-09 17:15:47 +0100 | [diff] [blame] | 2479 | if (obj->has_aliasing_ppgtt_mapping) { |
| 2480 | i915_ppgtt_unbind_object(dev_priv->mm.aliasing_ppgtt, obj); |
| 2481 | obj->has_aliasing_ppgtt_mapping = 0; |
| 2482 | } |
Daniel Vetter | 7416390 | 2012-02-15 23:50:21 +0100 | [diff] [blame] | 2483 | i915_gem_gtt_finish_object(obj); |
Daniel Vetter | 7bddb01 | 2012-02-09 17:15:47 +0100 | [diff] [blame] | 2484 | |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2485 | list_del(&obj->mm_list); |
| 2486 | list_move_tail(&obj->gtt_list, &dev_priv->mm.unbound_list); |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2487 | /* Avoid an unnecessary call to unbind on rebind. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2488 | obj->map_and_fenceable = true; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2489 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2490 | drm_mm_put_block(obj->gtt_space); |
| 2491 | obj->gtt_space = NULL; |
| 2492 | obj->gtt_offset = 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2493 | |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 2494 | return 0; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 2495 | } |
| 2496 | |
Ben Widawsky | b2da9fe | 2012-04-26 16:02:58 -0700 | [diff] [blame] | 2497 | int i915_gpu_idle(struct drm_device *dev) |
Daniel Vetter | 4df2faf | 2010-02-19 11:52:00 +0100 | [diff] [blame] | 2498 | { |
| 2499 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 2500 | struct intel_ring_buffer *ring; |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2501 | int ret, i; |
Daniel Vetter | 4df2faf | 2010-02-19 11:52:00 +0100 | [diff] [blame] | 2502 | |
Daniel Vetter | 4df2faf | 2010-02-19 11:52:00 +0100 | [diff] [blame] | 2503 | /* Flush everything onto the inactive list. */ |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 2504 | for_each_ring(ring, dev_priv, i) { |
Ben Widawsky | b6c7488 | 2012-08-14 14:35:14 -0700 | [diff] [blame] | 2505 | ret = i915_switch_context(ring, NULL, DEFAULT_CONTEXT_ID); |
| 2506 | if (ret) |
| 2507 | return ret; |
| 2508 | |
Chris Wilson | 3e96050 | 2012-11-27 16:22:54 +0000 | [diff] [blame] | 2509 | ret = intel_ring_idle(ring); |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2510 | if (ret) |
| 2511 | return ret; |
| 2512 | } |
Zou Nan hai | d1b851f | 2010-05-21 09:08:57 +0800 | [diff] [blame] | 2513 | |
Daniel Vetter | 8a1a49f | 2010-02-11 22:29:04 +0100 | [diff] [blame] | 2514 | return 0; |
Daniel Vetter | 4df2faf | 2010-02-19 11:52:00 +0100 | [diff] [blame] | 2515 | } |
| 2516 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2517 | static void sandybridge_write_fence_reg(struct drm_device *dev, int reg, |
| 2518 | struct drm_i915_gem_object *obj) |
Eric Anholt | 4e901fd | 2009-10-26 16:44:17 -0700 | [diff] [blame] | 2519 | { |
Eric Anholt | 4e901fd | 2009-10-26 16:44:17 -0700 | [diff] [blame] | 2520 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | 4e901fd | 2009-10-26 16:44:17 -0700 | [diff] [blame] | 2521 | uint64_t val; |
| 2522 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2523 | if (obj) { |
| 2524 | u32 size = obj->gtt_space->size; |
Eric Anholt | 4e901fd | 2009-10-26 16:44:17 -0700 | [diff] [blame] | 2525 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2526 | val = (uint64_t)((obj->gtt_offset + size - 4096) & |
| 2527 | 0xfffff000) << 32; |
| 2528 | val |= obj->gtt_offset & 0xfffff000; |
| 2529 | val |= (uint64_t)((obj->stride / 128) - 1) << |
| 2530 | SANDYBRIDGE_FENCE_PITCH_SHIFT; |
Eric Anholt | 4e901fd | 2009-10-26 16:44:17 -0700 | [diff] [blame] | 2531 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2532 | if (obj->tiling_mode == I915_TILING_Y) |
| 2533 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; |
| 2534 | val |= I965_FENCE_REG_VALID; |
| 2535 | } else |
| 2536 | val = 0; |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2537 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2538 | I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + reg * 8, val); |
| 2539 | POSTING_READ(FENCE_REG_SANDYBRIDGE_0 + reg * 8); |
Eric Anholt | 4e901fd | 2009-10-26 16:44:17 -0700 | [diff] [blame] | 2540 | } |
| 2541 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2542 | static void i965_write_fence_reg(struct drm_device *dev, int reg, |
| 2543 | struct drm_i915_gem_object *obj) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2544 | { |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2545 | drm_i915_private_t *dev_priv = dev->dev_private; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2546 | uint64_t val; |
| 2547 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2548 | if (obj) { |
| 2549 | u32 size = obj->gtt_space->size; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2550 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2551 | val = (uint64_t)((obj->gtt_offset + size - 4096) & |
| 2552 | 0xfffff000) << 32; |
| 2553 | val |= obj->gtt_offset & 0xfffff000; |
| 2554 | val |= ((obj->stride / 128) - 1) << I965_FENCE_PITCH_SHIFT; |
| 2555 | if (obj->tiling_mode == I915_TILING_Y) |
| 2556 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; |
| 2557 | val |= I965_FENCE_REG_VALID; |
| 2558 | } else |
| 2559 | val = 0; |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2560 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2561 | I915_WRITE64(FENCE_REG_965_0 + reg * 8, val); |
| 2562 | POSTING_READ(FENCE_REG_965_0 + reg * 8); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2563 | } |
| 2564 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2565 | static void i915_write_fence_reg(struct drm_device *dev, int reg, |
| 2566 | struct drm_i915_gem_object *obj) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2567 | { |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2568 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2569 | u32 val; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2570 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2571 | if (obj) { |
| 2572 | u32 size = obj->gtt_space->size; |
| 2573 | int pitch_val; |
| 2574 | int tile_width; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2575 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2576 | WARN((obj->gtt_offset & ~I915_FENCE_START_MASK) || |
| 2577 | (size & -size) != size || |
| 2578 | (obj->gtt_offset & (size - 1)), |
| 2579 | "object 0x%08x [fenceable? %d] not 1M or pot-size (0x%08x) aligned\n", |
| 2580 | obj->gtt_offset, obj->map_and_fenceable, size); |
| 2581 | |
| 2582 | if (obj->tiling_mode == I915_TILING_Y && HAS_128_BYTE_Y_TILING(dev)) |
| 2583 | tile_width = 128; |
| 2584 | else |
| 2585 | tile_width = 512; |
| 2586 | |
| 2587 | /* Note: pitch better be a power of two tile widths */ |
| 2588 | pitch_val = obj->stride / tile_width; |
| 2589 | pitch_val = ffs(pitch_val) - 1; |
| 2590 | |
| 2591 | val = obj->gtt_offset; |
| 2592 | if (obj->tiling_mode == I915_TILING_Y) |
| 2593 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; |
| 2594 | val |= I915_FENCE_SIZE_BITS(size); |
| 2595 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; |
| 2596 | val |= I830_FENCE_REG_VALID; |
| 2597 | } else |
| 2598 | val = 0; |
| 2599 | |
| 2600 | if (reg < 8) |
| 2601 | reg = FENCE_REG_830_0 + reg * 4; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2602 | else |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2603 | reg = FENCE_REG_945_8 + (reg - 8) * 4; |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 2604 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2605 | I915_WRITE(reg, val); |
| 2606 | POSTING_READ(reg); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2607 | } |
| 2608 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2609 | static void i830_write_fence_reg(struct drm_device *dev, int reg, |
| 2610 | struct drm_i915_gem_object *obj) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2611 | { |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2612 | drm_i915_private_t *dev_priv = dev->dev_private; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2613 | uint32_t val; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2614 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2615 | if (obj) { |
| 2616 | u32 size = obj->gtt_space->size; |
| 2617 | uint32_t pitch_val; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2618 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2619 | WARN((obj->gtt_offset & ~I830_FENCE_START_MASK) || |
| 2620 | (size & -size) != size || |
| 2621 | (obj->gtt_offset & (size - 1)), |
| 2622 | "object 0x%08x not 512K or pot-size 0x%08x aligned\n", |
| 2623 | obj->gtt_offset, size); |
Eric Anholt | e76a16d | 2009-05-26 17:44:56 -0700 | [diff] [blame] | 2624 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2625 | pitch_val = obj->stride / 128; |
| 2626 | pitch_val = ffs(pitch_val) - 1; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2627 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2628 | val = obj->gtt_offset; |
| 2629 | if (obj->tiling_mode == I915_TILING_Y) |
| 2630 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; |
| 2631 | val |= I830_FENCE_SIZE_BITS(size); |
| 2632 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; |
| 2633 | val |= I830_FENCE_REG_VALID; |
| 2634 | } else |
| 2635 | val = 0; |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2636 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2637 | I915_WRITE(FENCE_REG_830_0 + reg * 4, val); |
| 2638 | POSTING_READ(FENCE_REG_830_0 + reg * 4); |
| 2639 | } |
| 2640 | |
| 2641 | static void i915_gem_write_fence(struct drm_device *dev, int reg, |
| 2642 | struct drm_i915_gem_object *obj) |
| 2643 | { |
| 2644 | switch (INTEL_INFO(dev)->gen) { |
| 2645 | case 7: |
| 2646 | case 6: sandybridge_write_fence_reg(dev, reg, obj); break; |
| 2647 | case 5: |
| 2648 | case 4: i965_write_fence_reg(dev, reg, obj); break; |
| 2649 | case 3: i915_write_fence_reg(dev, reg, obj); break; |
| 2650 | case 2: i830_write_fence_reg(dev, reg, obj); break; |
| 2651 | default: break; |
| 2652 | } |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2653 | } |
| 2654 | |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 2655 | static inline int fence_number(struct drm_i915_private *dev_priv, |
| 2656 | struct drm_i915_fence_reg *fence) |
| 2657 | { |
| 2658 | return fence - dev_priv->fence_regs; |
| 2659 | } |
| 2660 | |
| 2661 | static void i915_gem_object_update_fence(struct drm_i915_gem_object *obj, |
| 2662 | struct drm_i915_fence_reg *fence, |
| 2663 | bool enable) |
| 2664 | { |
| 2665 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
| 2666 | int reg = fence_number(dev_priv, fence); |
| 2667 | |
| 2668 | i915_gem_write_fence(obj->base.dev, reg, enable ? obj : NULL); |
| 2669 | |
| 2670 | if (enable) { |
| 2671 | obj->fence_reg = reg; |
| 2672 | fence->obj = obj; |
| 2673 | list_move_tail(&fence->lru_list, &dev_priv->mm.fence_list); |
| 2674 | } else { |
| 2675 | obj->fence_reg = I915_FENCE_REG_NONE; |
| 2676 | fence->obj = NULL; |
| 2677 | list_del_init(&fence->lru_list); |
| 2678 | } |
| 2679 | } |
| 2680 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2681 | static int |
Chris Wilson | a360bb1 | 2012-04-17 15:31:25 +0100 | [diff] [blame] | 2682 | i915_gem_object_flush_fence(struct drm_i915_gem_object *obj) |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2683 | { |
Chris Wilson | 1c293ea | 2012-04-17 15:31:27 +0100 | [diff] [blame] | 2684 | if (obj->last_fenced_seqno) { |
Chris Wilson | 86d5bc3 | 2012-07-20 12:41:04 +0100 | [diff] [blame] | 2685 | int ret = i915_wait_seqno(obj->ring, obj->last_fenced_seqno); |
Chris Wilson | 1899184 | 2012-04-17 15:31:29 +0100 | [diff] [blame] | 2686 | if (ret) |
| 2687 | return ret; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2688 | |
| 2689 | obj->last_fenced_seqno = 0; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2690 | } |
| 2691 | |
Chris Wilson | 63256ec | 2011-01-04 18:42:07 +0000 | [diff] [blame] | 2692 | /* Ensure that all CPU reads are completed before installing a fence |
| 2693 | * and all writes before removing the fence. |
| 2694 | */ |
| 2695 | if (obj->base.read_domains & I915_GEM_DOMAIN_GTT) |
| 2696 | mb(); |
| 2697 | |
Chris Wilson | 86d5bc3 | 2012-07-20 12:41:04 +0100 | [diff] [blame] | 2698 | obj->fenced_gpu_access = false; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2699 | return 0; |
| 2700 | } |
| 2701 | |
| 2702 | int |
| 2703 | i915_gem_object_put_fence(struct drm_i915_gem_object *obj) |
| 2704 | { |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 2705 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2706 | int ret; |
| 2707 | |
Chris Wilson | a360bb1 | 2012-04-17 15:31:25 +0100 | [diff] [blame] | 2708 | ret = i915_gem_object_flush_fence(obj); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2709 | if (ret) |
| 2710 | return ret; |
| 2711 | |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 2712 | if (obj->fence_reg == I915_FENCE_REG_NONE) |
| 2713 | return 0; |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 2714 | |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 2715 | i915_gem_object_update_fence(obj, |
| 2716 | &dev_priv->fence_regs[obj->fence_reg], |
| 2717 | false); |
| 2718 | i915_gem_object_fence_lost(obj); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2719 | |
| 2720 | return 0; |
| 2721 | } |
| 2722 | |
| 2723 | static struct drm_i915_fence_reg * |
Chris Wilson | a360bb1 | 2012-04-17 15:31:25 +0100 | [diff] [blame] | 2724 | i915_find_fence_reg(struct drm_device *dev) |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2725 | { |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2726 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 8fe301a | 2012-04-17 15:31:28 +0100 | [diff] [blame] | 2727 | struct drm_i915_fence_reg *reg, *avail; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2728 | int i; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2729 | |
| 2730 | /* First try to find a free reg */ |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2731 | avail = NULL; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2732 | for (i = dev_priv->fence_reg_start; i < dev_priv->num_fence_regs; i++) { |
| 2733 | reg = &dev_priv->fence_regs[i]; |
| 2734 | if (!reg->obj) |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2735 | return reg; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2736 | |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 2737 | if (!reg->pin_count) |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2738 | avail = reg; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2739 | } |
| 2740 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2741 | if (avail == NULL) |
| 2742 | return NULL; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2743 | |
| 2744 | /* None available, try to steal one or wait for a user to finish */ |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2745 | list_for_each_entry(reg, &dev_priv->mm.fence_list, lru_list) { |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 2746 | if (reg->pin_count) |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2747 | continue; |
| 2748 | |
Chris Wilson | 8fe301a | 2012-04-17 15:31:28 +0100 | [diff] [blame] | 2749 | return reg; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2750 | } |
| 2751 | |
Chris Wilson | 8fe301a | 2012-04-17 15:31:28 +0100 | [diff] [blame] | 2752 | return NULL; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2753 | } |
| 2754 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2755 | /** |
Chris Wilson | 9a5a53b | 2012-03-22 15:10:00 +0000 | [diff] [blame] | 2756 | * i915_gem_object_get_fence - set up fencing for an object |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2757 | * @obj: object to map through a fence reg |
| 2758 | * |
| 2759 | * When mapping objects through the GTT, userspace wants to be able to write |
| 2760 | * to them without having to worry about swizzling if the object is tiled. |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2761 | * This function walks the fence regs looking for a free one for @obj, |
| 2762 | * stealing one if it can't find any. |
| 2763 | * |
| 2764 | * It then sets up the reg based on the object's properties: address, pitch |
| 2765 | * and tiling format. |
Chris Wilson | 9a5a53b | 2012-03-22 15:10:00 +0000 | [diff] [blame] | 2766 | * |
| 2767 | * For an untiled surface, this removes any existing fence. |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2768 | */ |
Chris Wilson | 8c4b8c3 | 2009-06-17 22:08:52 +0100 | [diff] [blame] | 2769 | int |
Chris Wilson | 06d9813 | 2012-04-17 15:31:24 +0100 | [diff] [blame] | 2770 | i915_gem_object_get_fence(struct drm_i915_gem_object *obj) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2771 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2772 | struct drm_device *dev = obj->base.dev; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 2773 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 2774 | bool enable = obj->tiling_mode != I915_TILING_NONE; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2775 | struct drm_i915_fence_reg *reg; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2776 | int ret; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2777 | |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 2778 | /* Have we updated the tiling parameters upon the object and so |
| 2779 | * will need to serialise the write to the associated fence register? |
| 2780 | */ |
Chris Wilson | 5d82e3e | 2012-04-21 16:23:23 +0100 | [diff] [blame] | 2781 | if (obj->fence_dirty) { |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 2782 | ret = i915_gem_object_flush_fence(obj); |
| 2783 | if (ret) |
| 2784 | return ret; |
| 2785 | } |
Chris Wilson | 9a5a53b | 2012-03-22 15:10:00 +0000 | [diff] [blame] | 2786 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2787 | /* Just update our place in the LRU if our fence is getting reused. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2788 | if (obj->fence_reg != I915_FENCE_REG_NONE) { |
| 2789 | reg = &dev_priv->fence_regs[obj->fence_reg]; |
Chris Wilson | 5d82e3e | 2012-04-21 16:23:23 +0100 | [diff] [blame] | 2790 | if (!obj->fence_dirty) { |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 2791 | list_move_tail(®->lru_list, |
| 2792 | &dev_priv->mm.fence_list); |
| 2793 | return 0; |
| 2794 | } |
| 2795 | } else if (enable) { |
| 2796 | reg = i915_find_fence_reg(dev); |
| 2797 | if (reg == NULL) |
| 2798 | return -EDEADLK; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2799 | |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 2800 | if (reg->obj) { |
| 2801 | struct drm_i915_gem_object *old = reg->obj; |
| 2802 | |
| 2803 | ret = i915_gem_object_flush_fence(old); |
Chris Wilson | 29c5a58 | 2011-03-17 15:23:22 +0000 | [diff] [blame] | 2804 | if (ret) |
| 2805 | return ret; |
| 2806 | |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 2807 | i915_gem_object_fence_lost(old); |
Chris Wilson | 29c5a58 | 2011-03-17 15:23:22 +0000 | [diff] [blame] | 2808 | } |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 2809 | } else |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 2810 | return 0; |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 2811 | |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 2812 | i915_gem_object_update_fence(obj, reg, enable); |
Chris Wilson | 5d82e3e | 2012-04-21 16:23:23 +0100 | [diff] [blame] | 2813 | obj->fence_dirty = false; |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 2814 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 2815 | return 0; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2816 | } |
| 2817 | |
Chris Wilson | 42d6ab4 | 2012-07-26 11:49:32 +0100 | [diff] [blame] | 2818 | static bool i915_gem_valid_gtt_space(struct drm_device *dev, |
| 2819 | struct drm_mm_node *gtt_space, |
| 2820 | unsigned long cache_level) |
| 2821 | { |
| 2822 | struct drm_mm_node *other; |
| 2823 | |
| 2824 | /* On non-LLC machines we have to be careful when putting differing |
| 2825 | * types of snoopable memory together to avoid the prefetcher |
| 2826 | * crossing memory domains and dieing. |
| 2827 | */ |
| 2828 | if (HAS_LLC(dev)) |
| 2829 | return true; |
| 2830 | |
| 2831 | if (gtt_space == NULL) |
| 2832 | return true; |
| 2833 | |
| 2834 | if (list_empty(>t_space->node_list)) |
| 2835 | return true; |
| 2836 | |
| 2837 | other = list_entry(gtt_space->node_list.prev, struct drm_mm_node, node_list); |
| 2838 | if (other->allocated && !other->hole_follows && other->color != cache_level) |
| 2839 | return false; |
| 2840 | |
| 2841 | other = list_entry(gtt_space->node_list.next, struct drm_mm_node, node_list); |
| 2842 | if (other->allocated && !gtt_space->hole_follows && other->color != cache_level) |
| 2843 | return false; |
| 2844 | |
| 2845 | return true; |
| 2846 | } |
| 2847 | |
| 2848 | static void i915_gem_verify_gtt(struct drm_device *dev) |
| 2849 | { |
| 2850 | #if WATCH_GTT |
| 2851 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2852 | struct drm_i915_gem_object *obj; |
| 2853 | int err = 0; |
| 2854 | |
| 2855 | list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) { |
| 2856 | if (obj->gtt_space == NULL) { |
| 2857 | printk(KERN_ERR "object found on GTT list with no space reserved\n"); |
| 2858 | err++; |
| 2859 | continue; |
| 2860 | } |
| 2861 | |
| 2862 | if (obj->cache_level != obj->gtt_space->color) { |
| 2863 | printk(KERN_ERR "object reserved space [%08lx, %08lx] with wrong color, cache_level=%x, color=%lx\n", |
| 2864 | obj->gtt_space->start, |
| 2865 | obj->gtt_space->start + obj->gtt_space->size, |
| 2866 | obj->cache_level, |
| 2867 | obj->gtt_space->color); |
| 2868 | err++; |
| 2869 | continue; |
| 2870 | } |
| 2871 | |
| 2872 | if (!i915_gem_valid_gtt_space(dev, |
| 2873 | obj->gtt_space, |
| 2874 | obj->cache_level)) { |
| 2875 | printk(KERN_ERR "invalid GTT space found at [%08lx, %08lx] - color=%x\n", |
| 2876 | obj->gtt_space->start, |
| 2877 | obj->gtt_space->start + obj->gtt_space->size, |
| 2878 | obj->cache_level); |
| 2879 | err++; |
| 2880 | continue; |
| 2881 | } |
| 2882 | } |
| 2883 | |
| 2884 | WARN_ON(err); |
| 2885 | #endif |
| 2886 | } |
| 2887 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2888 | /** |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2889 | * Finds free space in the GTT aperture and binds the object there. |
| 2890 | */ |
| 2891 | static int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2892 | i915_gem_object_bind_to_gtt(struct drm_i915_gem_object *obj, |
Daniel Vetter | 920afa7 | 2010-09-16 17:54:23 +0200 | [diff] [blame] | 2893 | unsigned alignment, |
Chris Wilson | 86a1ee2 | 2012-08-11 15:41:04 +0100 | [diff] [blame] | 2894 | bool map_and_fenceable, |
| 2895 | bool nonblocking) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2896 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2897 | struct drm_device *dev = obj->base.dev; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2898 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | dc9dd7a | 2012-12-07 20:37:07 +0000 | [diff] [blame] | 2899 | struct drm_mm_node *node; |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 2900 | u32 size, fence_size, fence_alignment, unfenced_alignment; |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2901 | bool mappable, fenceable; |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2902 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2903 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2904 | if (obj->madv != I915_MADV_WILLNEED) { |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 2905 | DRM_ERROR("Attempting to bind a purgeable object\n"); |
| 2906 | return -EINVAL; |
| 2907 | } |
| 2908 | |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 2909 | fence_size = i915_gem_get_gtt_size(dev, |
| 2910 | obj->base.size, |
| 2911 | obj->tiling_mode); |
| 2912 | fence_alignment = i915_gem_get_gtt_alignment(dev, |
| 2913 | obj->base.size, |
| 2914 | obj->tiling_mode); |
| 2915 | unfenced_alignment = |
| 2916 | i915_gem_get_unfenced_gtt_alignment(dev, |
| 2917 | obj->base.size, |
| 2918 | obj->tiling_mode); |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 2919 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2920 | if (alignment == 0) |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 2921 | alignment = map_and_fenceable ? fence_alignment : |
| 2922 | unfenced_alignment; |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2923 | if (map_and_fenceable && alignment & (fence_alignment - 1)) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2924 | DRM_ERROR("Invalid object alignment requested %u\n", alignment); |
| 2925 | return -EINVAL; |
| 2926 | } |
| 2927 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2928 | size = map_and_fenceable ? fence_size : obj->base.size; |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 2929 | |
Chris Wilson | 654fc60 | 2010-05-27 13:18:21 +0100 | [diff] [blame] | 2930 | /* If the object is bigger than the entire aperture, reject it early |
| 2931 | * before evicting everything in a vain attempt to find space. |
| 2932 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2933 | if (obj->base.size > |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2934 | (map_and_fenceable ? dev_priv->mm.gtt_mappable_end : dev_priv->mm.gtt_total)) { |
Chris Wilson | 654fc60 | 2010-05-27 13:18:21 +0100 | [diff] [blame] | 2935 | DRM_ERROR("Attempting to bind an object larger than the aperture\n"); |
| 2936 | return -E2BIG; |
| 2937 | } |
| 2938 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 2939 | ret = i915_gem_object_get_pages(obj); |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2940 | if (ret) |
| 2941 | return ret; |
| 2942 | |
Chris Wilson | fbdda6f | 2012-11-20 10:45:16 +0000 | [diff] [blame] | 2943 | i915_gem_object_pin_pages(obj); |
| 2944 | |
Chris Wilson | dc9dd7a | 2012-12-07 20:37:07 +0000 | [diff] [blame] | 2945 | node = kzalloc(sizeof(*node), GFP_KERNEL); |
| 2946 | if (node == NULL) { |
| 2947 | i915_gem_object_unpin_pages(obj); |
| 2948 | return -ENOMEM; |
| 2949 | } |
| 2950 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2951 | search_free: |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2952 | if (map_and_fenceable) |
Chris Wilson | dc9dd7a | 2012-12-07 20:37:07 +0000 | [diff] [blame] | 2953 | ret = drm_mm_insert_node_in_range_generic(&dev_priv->mm.gtt_space, node, |
| 2954 | size, alignment, obj->cache_level, |
| 2955 | 0, dev_priv->mm.gtt_mappable_end); |
Daniel Vetter | 920afa7 | 2010-09-16 17:54:23 +0200 | [diff] [blame] | 2956 | else |
Chris Wilson | dc9dd7a | 2012-12-07 20:37:07 +0000 | [diff] [blame] | 2957 | ret = drm_mm_insert_node_generic(&dev_priv->mm.gtt_space, node, |
| 2958 | size, alignment, obj->cache_level); |
| 2959 | if (ret) { |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2960 | ret = i915_gem_evict_something(dev, size, alignment, |
Chris Wilson | 42d6ab4 | 2012-07-26 11:49:32 +0100 | [diff] [blame] | 2961 | obj->cache_level, |
Chris Wilson | 86a1ee2 | 2012-08-11 15:41:04 +0100 | [diff] [blame] | 2962 | map_and_fenceable, |
| 2963 | nonblocking); |
Chris Wilson | dc9dd7a | 2012-12-07 20:37:07 +0000 | [diff] [blame] | 2964 | if (ret == 0) |
| 2965 | goto search_free; |
Chris Wilson | 9731129 | 2009-09-21 00:22:34 +0100 | [diff] [blame] | 2966 | |
Chris Wilson | fbdda6f | 2012-11-20 10:45:16 +0000 | [diff] [blame] | 2967 | i915_gem_object_unpin_pages(obj); |
Chris Wilson | dc9dd7a | 2012-12-07 20:37:07 +0000 | [diff] [blame] | 2968 | kfree(node); |
| 2969 | return ret; |
| 2970 | } |
| 2971 | if (WARN_ON(!i915_gem_valid_gtt_space(dev, node, obj->cache_level))) { |
| 2972 | i915_gem_object_unpin_pages(obj); |
| 2973 | drm_mm_put_block(node); |
Chris Wilson | 42d6ab4 | 2012-07-26 11:49:32 +0100 | [diff] [blame] | 2974 | return -EINVAL; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2975 | } |
| 2976 | |
Daniel Vetter | 7416390 | 2012-02-15 23:50:21 +0100 | [diff] [blame] | 2977 | ret = i915_gem_gtt_prepare_object(obj); |
Daniel Vetter | 7c2e6fd | 2010-11-06 10:10:47 +0100 | [diff] [blame] | 2978 | if (ret) { |
Chris Wilson | fbdda6f | 2012-11-20 10:45:16 +0000 | [diff] [blame] | 2979 | i915_gem_object_unpin_pages(obj); |
Chris Wilson | dc9dd7a | 2012-12-07 20:37:07 +0000 | [diff] [blame] | 2980 | drm_mm_put_block(node); |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2981 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2982 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2983 | |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2984 | list_move_tail(&obj->gtt_list, &dev_priv->mm.bound_list); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2985 | list_add_tail(&obj->mm_list, &dev_priv->mm.inactive_list); |
Chris Wilson | bf1a109 | 2010-08-07 11:01:20 +0100 | [diff] [blame] | 2986 | |
Chris Wilson | dc9dd7a | 2012-12-07 20:37:07 +0000 | [diff] [blame] | 2987 | obj->gtt_space = node; |
| 2988 | obj->gtt_offset = node->start; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2989 | |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2990 | fenceable = |
Chris Wilson | dc9dd7a | 2012-12-07 20:37:07 +0000 | [diff] [blame] | 2991 | node->size == fence_size && |
| 2992 | (node->start & (fence_alignment - 1)) == 0; |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 2993 | |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2994 | mappable = |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2995 | obj->gtt_offset + obj->base.size <= dev_priv->mm.gtt_mappable_end; |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 2996 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2997 | obj->map_and_fenceable = mappable && fenceable; |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2998 | |
Chris Wilson | fbdda6f | 2012-11-20 10:45:16 +0000 | [diff] [blame] | 2999 | i915_gem_object_unpin_pages(obj); |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 3000 | trace_i915_gem_object_bind(obj, map_and_fenceable); |
Chris Wilson | 42d6ab4 | 2012-07-26 11:49:32 +0100 | [diff] [blame] | 3001 | i915_gem_verify_gtt(dev); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3002 | return 0; |
| 3003 | } |
| 3004 | |
| 3005 | void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3006 | i915_gem_clflush_object(struct drm_i915_gem_object *obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3007 | { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3008 | /* If we don't have a page list set up, then we're not pinned |
| 3009 | * to GPU, and we can ignore the cache flush because it'll happen |
| 3010 | * again at bind time. |
| 3011 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3012 | if (obj->pages == NULL) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3013 | return; |
| 3014 | |
Chris Wilson | 9c23f7f | 2011-03-29 16:59:52 -0700 | [diff] [blame] | 3015 | /* If the GPU is snooping the contents of the CPU cache, |
| 3016 | * we do not need to manually clear the CPU cache lines. However, |
| 3017 | * the caches are only snooped when the render cache is |
| 3018 | * flushed/invalidated. As we always have to emit invalidations |
| 3019 | * and flushes when moving into and out of the RENDER domain, correct |
| 3020 | * snooping behaviour occurs naturally as the result of our domain |
| 3021 | * tracking. |
| 3022 | */ |
| 3023 | if (obj->cache_level != I915_CACHE_NONE) |
| 3024 | return; |
| 3025 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3026 | trace_i915_gem_object_clflush(obj); |
Eric Anholt | cfa16a0 | 2009-05-26 18:46:16 -0700 | [diff] [blame] | 3027 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 3028 | drm_clflush_sg(obj->pages); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3029 | } |
| 3030 | |
| 3031 | /** Flushes the GTT write domain for the object if it's dirty. */ |
| 3032 | static void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3033 | i915_gem_object_flush_gtt_write_domain(struct drm_i915_gem_object *obj) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3034 | { |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3035 | uint32_t old_write_domain; |
| 3036 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3037 | if (obj->base.write_domain != I915_GEM_DOMAIN_GTT) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3038 | return; |
| 3039 | |
Chris Wilson | 63256ec | 2011-01-04 18:42:07 +0000 | [diff] [blame] | 3040 | /* No actual flushing is required for the GTT write domain. Writes |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3041 | * to it immediately go to main memory as far as we know, so there's |
| 3042 | * no chipset flush. It also doesn't land in render cache. |
Chris Wilson | 63256ec | 2011-01-04 18:42:07 +0000 | [diff] [blame] | 3043 | * |
| 3044 | * However, we do have to enforce the order so that all writes through |
| 3045 | * the GTT land before any writes to the device, such as updates to |
| 3046 | * the GATT itself. |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3047 | */ |
Chris Wilson | 63256ec | 2011-01-04 18:42:07 +0000 | [diff] [blame] | 3048 | wmb(); |
| 3049 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3050 | old_write_domain = obj->base.write_domain; |
| 3051 | obj->base.write_domain = 0; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3052 | |
| 3053 | trace_i915_gem_object_change_domain(obj, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3054 | obj->base.read_domains, |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3055 | old_write_domain); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3056 | } |
| 3057 | |
| 3058 | /** Flushes the CPU write domain for the object if it's dirty. */ |
| 3059 | static void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3060 | i915_gem_object_flush_cpu_write_domain(struct drm_i915_gem_object *obj) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3061 | { |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3062 | uint32_t old_write_domain; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3063 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3064 | if (obj->base.write_domain != I915_GEM_DOMAIN_CPU) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3065 | return; |
| 3066 | |
| 3067 | i915_gem_clflush_object(obj); |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 3068 | i915_gem_chipset_flush(obj->base.dev); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3069 | old_write_domain = obj->base.write_domain; |
| 3070 | obj->base.write_domain = 0; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3071 | |
| 3072 | trace_i915_gem_object_change_domain(obj, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3073 | obj->base.read_domains, |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3074 | old_write_domain); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3075 | } |
| 3076 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 3077 | /** |
| 3078 | * Moves a single object to the GTT read, and possibly write domain. |
| 3079 | * |
| 3080 | * This function returns when the move is complete, including waiting on |
| 3081 | * flushes to occur. |
| 3082 | */ |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3083 | int |
Chris Wilson | 2021746 | 2010-11-23 15:26:33 +0000 | [diff] [blame] | 3084 | i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj, bool write) |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 3085 | { |
Chris Wilson | 8325a09 | 2012-04-24 15:52:35 +0100 | [diff] [blame] | 3086 | drm_i915_private_t *dev_priv = obj->base.dev->dev_private; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3087 | uint32_t old_write_domain, old_read_domains; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3088 | int ret; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 3089 | |
Eric Anholt | 0235439 | 2008-11-26 13:58:13 -0800 | [diff] [blame] | 3090 | /* Not valid to be called on unbound objects. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3091 | if (obj->gtt_space == NULL) |
Eric Anholt | 0235439 | 2008-11-26 13:58:13 -0800 | [diff] [blame] | 3092 | return -EINVAL; |
| 3093 | |
Chris Wilson | 8d7e3de | 2011-02-07 15:23:02 +0000 | [diff] [blame] | 3094 | if (obj->base.write_domain == I915_GEM_DOMAIN_GTT) |
| 3095 | return 0; |
| 3096 | |
Chris Wilson | 0201f1e | 2012-07-20 12:41:01 +0100 | [diff] [blame] | 3097 | ret = i915_gem_object_wait_rendering(obj, !write); |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 3098 | if (ret) |
| 3099 | return ret; |
| 3100 | |
Chris Wilson | 7213342 | 2010-09-13 23:56:38 +0100 | [diff] [blame] | 3101 | i915_gem_object_flush_cpu_write_domain(obj); |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3102 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3103 | old_write_domain = obj->base.write_domain; |
| 3104 | old_read_domains = obj->base.read_domains; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 3105 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 3106 | /* It should now be out of any other write domains, and we can update |
| 3107 | * the domain values for our changes. |
| 3108 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3109 | BUG_ON((obj->base.write_domain & ~I915_GEM_DOMAIN_GTT) != 0); |
| 3110 | obj->base.read_domains |= I915_GEM_DOMAIN_GTT; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3111 | if (write) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3112 | obj->base.read_domains = I915_GEM_DOMAIN_GTT; |
| 3113 | obj->base.write_domain = I915_GEM_DOMAIN_GTT; |
| 3114 | obj->dirty = 1; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3115 | } |
| 3116 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3117 | trace_i915_gem_object_change_domain(obj, |
| 3118 | old_read_domains, |
| 3119 | old_write_domain); |
| 3120 | |
Chris Wilson | 8325a09 | 2012-04-24 15:52:35 +0100 | [diff] [blame] | 3121 | /* And bump the LRU for this access */ |
| 3122 | if (i915_gem_object_is_inactive(obj)) |
| 3123 | list_move_tail(&obj->mm_list, &dev_priv->mm.inactive_list); |
| 3124 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3125 | return 0; |
| 3126 | } |
| 3127 | |
Chris Wilson | e4ffd17 | 2011-04-04 09:44:39 +0100 | [diff] [blame] | 3128 | int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj, |
| 3129 | enum i915_cache_level cache_level) |
| 3130 | { |
Daniel Vetter | 7bddb01 | 2012-02-09 17:15:47 +0100 | [diff] [blame] | 3131 | struct drm_device *dev = obj->base.dev; |
| 3132 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | e4ffd17 | 2011-04-04 09:44:39 +0100 | [diff] [blame] | 3133 | int ret; |
| 3134 | |
| 3135 | if (obj->cache_level == cache_level) |
| 3136 | return 0; |
| 3137 | |
| 3138 | if (obj->pin_count) { |
| 3139 | DRM_DEBUG("can not change the cache level of pinned objects\n"); |
| 3140 | return -EBUSY; |
| 3141 | } |
| 3142 | |
Chris Wilson | 42d6ab4 | 2012-07-26 11:49:32 +0100 | [diff] [blame] | 3143 | if (!i915_gem_valid_gtt_space(dev, obj->gtt_space, cache_level)) { |
| 3144 | ret = i915_gem_object_unbind(obj); |
| 3145 | if (ret) |
| 3146 | return ret; |
| 3147 | } |
| 3148 | |
Chris Wilson | e4ffd17 | 2011-04-04 09:44:39 +0100 | [diff] [blame] | 3149 | if (obj->gtt_space) { |
| 3150 | ret = i915_gem_object_finish_gpu(obj); |
| 3151 | if (ret) |
| 3152 | return ret; |
| 3153 | |
| 3154 | i915_gem_object_finish_gtt(obj); |
| 3155 | |
| 3156 | /* Before SandyBridge, you could not use tiling or fence |
| 3157 | * registers with snooped memory, so relinquish any fences |
| 3158 | * currently pointing to our region in the aperture. |
| 3159 | */ |
Chris Wilson | 42d6ab4 | 2012-07-26 11:49:32 +0100 | [diff] [blame] | 3160 | if (INTEL_INFO(dev)->gen < 6) { |
Chris Wilson | e4ffd17 | 2011-04-04 09:44:39 +0100 | [diff] [blame] | 3161 | ret = i915_gem_object_put_fence(obj); |
| 3162 | if (ret) |
| 3163 | return ret; |
| 3164 | } |
| 3165 | |
Daniel Vetter | 74898d7 | 2012-02-15 23:50:22 +0100 | [diff] [blame] | 3166 | if (obj->has_global_gtt_mapping) |
| 3167 | i915_gem_gtt_bind_object(obj, cache_level); |
Daniel Vetter | 7bddb01 | 2012-02-09 17:15:47 +0100 | [diff] [blame] | 3168 | if (obj->has_aliasing_ppgtt_mapping) |
| 3169 | i915_ppgtt_bind_object(dev_priv->mm.aliasing_ppgtt, |
| 3170 | obj, cache_level); |
Chris Wilson | 42d6ab4 | 2012-07-26 11:49:32 +0100 | [diff] [blame] | 3171 | |
| 3172 | obj->gtt_space->color = cache_level; |
Chris Wilson | e4ffd17 | 2011-04-04 09:44:39 +0100 | [diff] [blame] | 3173 | } |
| 3174 | |
| 3175 | if (cache_level == I915_CACHE_NONE) { |
| 3176 | u32 old_read_domains, old_write_domain; |
| 3177 | |
| 3178 | /* If we're coming from LLC cached, then we haven't |
| 3179 | * actually been tracking whether the data is in the |
| 3180 | * CPU cache or not, since we only allow one bit set |
| 3181 | * in obj->write_domain and have been skipping the clflushes. |
| 3182 | * Just set it to the CPU cache for now. |
| 3183 | */ |
| 3184 | WARN_ON(obj->base.write_domain & ~I915_GEM_DOMAIN_CPU); |
| 3185 | WARN_ON(obj->base.read_domains & ~I915_GEM_DOMAIN_CPU); |
| 3186 | |
| 3187 | old_read_domains = obj->base.read_domains; |
| 3188 | old_write_domain = obj->base.write_domain; |
| 3189 | |
| 3190 | obj->base.read_domains = I915_GEM_DOMAIN_CPU; |
| 3191 | obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
| 3192 | |
| 3193 | trace_i915_gem_object_change_domain(obj, |
| 3194 | old_read_domains, |
| 3195 | old_write_domain); |
| 3196 | } |
| 3197 | |
| 3198 | obj->cache_level = cache_level; |
Chris Wilson | 42d6ab4 | 2012-07-26 11:49:32 +0100 | [diff] [blame] | 3199 | i915_gem_verify_gtt(dev); |
Chris Wilson | e4ffd17 | 2011-04-04 09:44:39 +0100 | [diff] [blame] | 3200 | return 0; |
| 3201 | } |
| 3202 | |
Ben Widawsky | 199adf4 | 2012-09-21 17:01:20 -0700 | [diff] [blame] | 3203 | int i915_gem_get_caching_ioctl(struct drm_device *dev, void *data, |
| 3204 | struct drm_file *file) |
Chris Wilson | e6994ae | 2012-07-10 10:27:08 +0100 | [diff] [blame] | 3205 | { |
Ben Widawsky | 199adf4 | 2012-09-21 17:01:20 -0700 | [diff] [blame] | 3206 | struct drm_i915_gem_caching *args = data; |
Chris Wilson | e6994ae | 2012-07-10 10:27:08 +0100 | [diff] [blame] | 3207 | struct drm_i915_gem_object *obj; |
| 3208 | int ret; |
| 3209 | |
| 3210 | ret = i915_mutex_lock_interruptible(dev); |
| 3211 | if (ret) |
| 3212 | return ret; |
| 3213 | |
| 3214 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
| 3215 | if (&obj->base == NULL) { |
| 3216 | ret = -ENOENT; |
| 3217 | goto unlock; |
| 3218 | } |
| 3219 | |
Ben Widawsky | 199adf4 | 2012-09-21 17:01:20 -0700 | [diff] [blame] | 3220 | args->caching = obj->cache_level != I915_CACHE_NONE; |
Chris Wilson | e6994ae | 2012-07-10 10:27:08 +0100 | [diff] [blame] | 3221 | |
| 3222 | drm_gem_object_unreference(&obj->base); |
| 3223 | unlock: |
| 3224 | mutex_unlock(&dev->struct_mutex); |
| 3225 | return ret; |
| 3226 | } |
| 3227 | |
Ben Widawsky | 199adf4 | 2012-09-21 17:01:20 -0700 | [diff] [blame] | 3228 | int i915_gem_set_caching_ioctl(struct drm_device *dev, void *data, |
| 3229 | struct drm_file *file) |
Chris Wilson | e6994ae | 2012-07-10 10:27:08 +0100 | [diff] [blame] | 3230 | { |
Ben Widawsky | 199adf4 | 2012-09-21 17:01:20 -0700 | [diff] [blame] | 3231 | struct drm_i915_gem_caching *args = data; |
Chris Wilson | e6994ae | 2012-07-10 10:27:08 +0100 | [diff] [blame] | 3232 | struct drm_i915_gem_object *obj; |
| 3233 | enum i915_cache_level level; |
| 3234 | int ret; |
| 3235 | |
Ben Widawsky | 199adf4 | 2012-09-21 17:01:20 -0700 | [diff] [blame] | 3236 | switch (args->caching) { |
| 3237 | case I915_CACHING_NONE: |
Chris Wilson | e6994ae | 2012-07-10 10:27:08 +0100 | [diff] [blame] | 3238 | level = I915_CACHE_NONE; |
| 3239 | break; |
Ben Widawsky | 199adf4 | 2012-09-21 17:01:20 -0700 | [diff] [blame] | 3240 | case I915_CACHING_CACHED: |
Chris Wilson | e6994ae | 2012-07-10 10:27:08 +0100 | [diff] [blame] | 3241 | level = I915_CACHE_LLC; |
| 3242 | break; |
| 3243 | default: |
| 3244 | return -EINVAL; |
| 3245 | } |
| 3246 | |
Ben Widawsky | 3bc2913 | 2012-09-26 16:15:20 -0700 | [diff] [blame] | 3247 | ret = i915_mutex_lock_interruptible(dev); |
| 3248 | if (ret) |
| 3249 | return ret; |
| 3250 | |
Chris Wilson | e6994ae | 2012-07-10 10:27:08 +0100 | [diff] [blame] | 3251 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
| 3252 | if (&obj->base == NULL) { |
| 3253 | ret = -ENOENT; |
| 3254 | goto unlock; |
| 3255 | } |
| 3256 | |
| 3257 | ret = i915_gem_object_set_cache_level(obj, level); |
| 3258 | |
| 3259 | drm_gem_object_unreference(&obj->base); |
| 3260 | unlock: |
| 3261 | mutex_unlock(&dev->struct_mutex); |
| 3262 | return ret; |
| 3263 | } |
| 3264 | |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3265 | /* |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3266 | * Prepare buffer for display plane (scanout, cursors, etc). |
| 3267 | * Can be called from an uninterruptible phase (modesetting) and allows |
| 3268 | * any flushes to be pipelined (for pageflips). |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3269 | */ |
| 3270 | int |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3271 | i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj, |
| 3272 | u32 alignment, |
Chris Wilson | 919926a | 2010-11-12 13:42:53 +0000 | [diff] [blame] | 3273 | struct intel_ring_buffer *pipelined) |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3274 | { |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3275 | u32 old_read_domains, old_write_domain; |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3276 | int ret; |
| 3277 | |
Chris Wilson | 0be7328 | 2010-12-06 14:36:27 +0000 | [diff] [blame] | 3278 | if (pipelined != obj->ring) { |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 3279 | ret = i915_gem_object_sync(obj, pipelined); |
| 3280 | if (ret) |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3281 | return ret; |
| 3282 | } |
| 3283 | |
Eric Anholt | a7ef064 | 2011-03-29 16:59:54 -0700 | [diff] [blame] | 3284 | /* The display engine is not coherent with the LLC cache on gen6. As |
| 3285 | * a result, we make sure that the pinning that is about to occur is |
| 3286 | * done with uncached PTEs. This is lowest common denominator for all |
| 3287 | * chipsets. |
| 3288 | * |
| 3289 | * However for gen6+, we could do better by using the GFDT bit instead |
| 3290 | * of uncaching, which would allow us to flush all the LLC-cached data |
| 3291 | * with that bit in the PTE to main memory with just one PIPE_CONTROL. |
| 3292 | */ |
| 3293 | ret = i915_gem_object_set_cache_level(obj, I915_CACHE_NONE); |
| 3294 | if (ret) |
| 3295 | return ret; |
| 3296 | |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3297 | /* As the user may map the buffer once pinned in the display plane |
| 3298 | * (e.g. libkms for the bootup splash), we have to ensure that we |
| 3299 | * always use map_and_fenceable for all scanout buffers. |
| 3300 | */ |
Chris Wilson | 86a1ee2 | 2012-08-11 15:41:04 +0100 | [diff] [blame] | 3301 | ret = i915_gem_object_pin(obj, alignment, true, false); |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3302 | if (ret) |
| 3303 | return ret; |
| 3304 | |
Chris Wilson | b118c1e | 2010-05-27 13:18:14 +0100 | [diff] [blame] | 3305 | i915_gem_object_flush_cpu_write_domain(obj); |
| 3306 | |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3307 | old_write_domain = obj->base.write_domain; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3308 | old_read_domains = obj->base.read_domains; |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3309 | |
| 3310 | /* It should now be out of any other write domains, and we can update |
| 3311 | * the domain values for our changes. |
| 3312 | */ |
Chris Wilson | e5f1d96 | 2012-07-20 12:41:00 +0100 | [diff] [blame] | 3313 | obj->base.write_domain = 0; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3314 | obj->base.read_domains |= I915_GEM_DOMAIN_GTT; |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3315 | |
| 3316 | trace_i915_gem_object_change_domain(obj, |
| 3317 | old_read_domains, |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3318 | old_write_domain); |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3319 | |
| 3320 | return 0; |
| 3321 | } |
| 3322 | |
Chris Wilson | 8534551 | 2010-11-13 09:49:11 +0000 | [diff] [blame] | 3323 | int |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 3324 | i915_gem_object_finish_gpu(struct drm_i915_gem_object *obj) |
Chris Wilson | 8534551 | 2010-11-13 09:49:11 +0000 | [diff] [blame] | 3325 | { |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 3326 | int ret; |
| 3327 | |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 3328 | if ((obj->base.read_domains & I915_GEM_GPU_DOMAINS) == 0) |
Chris Wilson | 8534551 | 2010-11-13 09:49:11 +0000 | [diff] [blame] | 3329 | return 0; |
| 3330 | |
Chris Wilson | 0201f1e | 2012-07-20 12:41:01 +0100 | [diff] [blame] | 3331 | ret = i915_gem_object_wait_rendering(obj, false); |
Chris Wilson | c501ae7 | 2011-12-14 13:57:23 +0100 | [diff] [blame] | 3332 | if (ret) |
| 3333 | return ret; |
| 3334 | |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 3335 | /* Ensure that we invalidate the GPU's caches and TLBs. */ |
| 3336 | obj->base.read_domains &= ~I915_GEM_GPU_DOMAINS; |
Chris Wilson | c501ae7 | 2011-12-14 13:57:23 +0100 | [diff] [blame] | 3337 | return 0; |
Chris Wilson | 8534551 | 2010-11-13 09:49:11 +0000 | [diff] [blame] | 3338 | } |
| 3339 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3340 | /** |
| 3341 | * Moves a single object to the CPU read, and possibly write domain. |
| 3342 | * |
| 3343 | * This function returns when the move is complete, including waiting on |
| 3344 | * flushes to occur. |
| 3345 | */ |
Chris Wilson | dabdfe0 | 2012-03-26 10:10:27 +0200 | [diff] [blame] | 3346 | int |
Chris Wilson | 919926a | 2010-11-12 13:42:53 +0000 | [diff] [blame] | 3347 | i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3348 | { |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3349 | uint32_t old_write_domain, old_read_domains; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3350 | int ret; |
| 3351 | |
Chris Wilson | 8d7e3de | 2011-02-07 15:23:02 +0000 | [diff] [blame] | 3352 | if (obj->base.write_domain == I915_GEM_DOMAIN_CPU) |
| 3353 | return 0; |
| 3354 | |
Chris Wilson | 0201f1e | 2012-07-20 12:41:01 +0100 | [diff] [blame] | 3355 | ret = i915_gem_object_wait_rendering(obj, !write); |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 3356 | if (ret) |
| 3357 | return ret; |
| 3358 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3359 | i915_gem_object_flush_gtt_write_domain(obj); |
| 3360 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3361 | old_write_domain = obj->base.write_domain; |
| 3362 | old_read_domains = obj->base.read_domains; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3363 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3364 | /* Flush the CPU cache if it's still invalid. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3365 | if ((obj->base.read_domains & I915_GEM_DOMAIN_CPU) == 0) { |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3366 | i915_gem_clflush_object(obj); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3367 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3368 | obj->base.read_domains |= I915_GEM_DOMAIN_CPU; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3369 | } |
| 3370 | |
| 3371 | /* It should now be out of any other write domains, and we can update |
| 3372 | * the domain values for our changes. |
| 3373 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3374 | BUG_ON((obj->base.write_domain & ~I915_GEM_DOMAIN_CPU) != 0); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3375 | |
| 3376 | /* If we're writing through the CPU, then the GPU read domains will |
| 3377 | * need to be invalidated at next use. |
| 3378 | */ |
| 3379 | if (write) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3380 | obj->base.read_domains = I915_GEM_DOMAIN_CPU; |
| 3381 | obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3382 | } |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 3383 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3384 | trace_i915_gem_object_change_domain(obj, |
| 3385 | old_read_domains, |
| 3386 | old_write_domain); |
| 3387 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 3388 | return 0; |
| 3389 | } |
| 3390 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3391 | /* Throttle our rendering by waiting until the ring has completed our requests |
| 3392 | * emitted over 20 msec ago. |
| 3393 | * |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 3394 | * Note that if we were to use the current jiffies each time around the loop, |
| 3395 | * we wouldn't escape the function with any frames outstanding if the time to |
| 3396 | * render a frame was over 20ms. |
| 3397 | * |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3398 | * This should get us reasonable parallelism between CPU and GPU but also |
| 3399 | * relatively low latency when blocking on a particular request to finish. |
| 3400 | */ |
| 3401 | static int |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 3402 | i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3403 | { |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 3404 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3405 | struct drm_i915_file_private *file_priv = file->driver_priv; |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 3406 | unsigned long recent_enough = jiffies - msecs_to_jiffies(20); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 3407 | struct drm_i915_gem_request *request; |
| 3408 | struct intel_ring_buffer *ring = NULL; |
| 3409 | u32 seqno = 0; |
| 3410 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3411 | |
Chris Wilson | e110e8d | 2011-01-26 15:39:14 +0000 | [diff] [blame] | 3412 | if (atomic_read(&dev_priv->mm.wedged)) |
| 3413 | return -EIO; |
| 3414 | |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 3415 | spin_lock(&file_priv->mm.lock); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 3416 | list_for_each_entry(request, &file_priv->mm.request_list, client_list) { |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 3417 | if (time_after_eq(request->emitted_jiffies, recent_enough)) |
| 3418 | break; |
| 3419 | |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 3420 | ring = request->ring; |
| 3421 | seqno = request->seqno; |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 3422 | } |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 3423 | spin_unlock(&file_priv->mm.lock); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 3424 | |
| 3425 | if (seqno == 0) |
| 3426 | return 0; |
| 3427 | |
Ben Widawsky | 5c81fe85 | 2012-05-24 15:03:08 -0700 | [diff] [blame] | 3428 | ret = __wait_seqno(ring, seqno, true, NULL); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 3429 | if (ret == 0) |
| 3430 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, 0); |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 3431 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3432 | return ret; |
| 3433 | } |
| 3434 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3435 | int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3436 | i915_gem_object_pin(struct drm_i915_gem_object *obj, |
| 3437 | uint32_t alignment, |
Chris Wilson | 86a1ee2 | 2012-08-11 15:41:04 +0100 | [diff] [blame] | 3438 | bool map_and_fenceable, |
| 3439 | bool nonblocking) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3440 | { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3441 | int ret; |
| 3442 | |
Chris Wilson | 7e81a42 | 2012-09-15 09:41:57 +0100 | [diff] [blame] | 3443 | if (WARN_ON(obj->pin_count == DRM_I915_GEM_OBJECT_MAX_PIN_COUNT)) |
| 3444 | return -EBUSY; |
Chris Wilson | ac0c6b5 | 2010-05-27 13:18:18 +0100 | [diff] [blame] | 3445 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3446 | if (obj->gtt_space != NULL) { |
| 3447 | if ((alignment && obj->gtt_offset & (alignment - 1)) || |
| 3448 | (map_and_fenceable && !obj->map_and_fenceable)) { |
| 3449 | WARN(obj->pin_count, |
Chris Wilson | ae7d49d | 2010-08-04 12:37:41 +0100 | [diff] [blame] | 3450 | "bo is already pinned with incorrect alignment:" |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 3451 | " offset=%x, req.alignment=%x, req.map_and_fenceable=%d," |
| 3452 | " obj->map_and_fenceable=%d\n", |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3453 | obj->gtt_offset, alignment, |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 3454 | map_and_fenceable, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3455 | obj->map_and_fenceable); |
Chris Wilson | ac0c6b5 | 2010-05-27 13:18:18 +0100 | [diff] [blame] | 3456 | ret = i915_gem_object_unbind(obj); |
| 3457 | if (ret) |
| 3458 | return ret; |
| 3459 | } |
| 3460 | } |
| 3461 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3462 | if (obj->gtt_space == NULL) { |
Chris Wilson | 8742267 | 2012-11-21 13:04:03 +0000 | [diff] [blame] | 3463 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
| 3464 | |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 3465 | ret = i915_gem_object_bind_to_gtt(obj, alignment, |
Chris Wilson | 86a1ee2 | 2012-08-11 15:41:04 +0100 | [diff] [blame] | 3466 | map_and_fenceable, |
| 3467 | nonblocking); |
Chris Wilson | 9731129 | 2009-09-21 00:22:34 +0100 | [diff] [blame] | 3468 | if (ret) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3469 | return ret; |
Chris Wilson | 8742267 | 2012-11-21 13:04:03 +0000 | [diff] [blame] | 3470 | |
| 3471 | if (!dev_priv->mm.aliasing_ppgtt) |
| 3472 | i915_gem_gtt_bind_object(obj, obj->cache_level); |
Chris Wilson | 22c344e | 2009-02-11 14:26:45 +0000 | [diff] [blame] | 3473 | } |
Jesse Barnes | 76446ca | 2009-12-17 22:05:42 -0500 | [diff] [blame] | 3474 | |
Daniel Vetter | 74898d7 | 2012-02-15 23:50:22 +0100 | [diff] [blame] | 3475 | if (!obj->has_global_gtt_mapping && map_and_fenceable) |
| 3476 | i915_gem_gtt_bind_object(obj, obj->cache_level); |
| 3477 | |
Chris Wilson | 1b50247 | 2012-04-24 15:47:30 +0100 | [diff] [blame] | 3478 | obj->pin_count++; |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 3479 | obj->pin_mappable |= map_and_fenceable; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3480 | |
| 3481 | return 0; |
| 3482 | } |
| 3483 | |
| 3484 | void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3485 | i915_gem_object_unpin(struct drm_i915_gem_object *obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3486 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3487 | BUG_ON(obj->pin_count == 0); |
| 3488 | BUG_ON(obj->gtt_space == NULL); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3489 | |
Chris Wilson | 1b50247 | 2012-04-24 15:47:30 +0100 | [diff] [blame] | 3490 | if (--obj->pin_count == 0) |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 3491 | obj->pin_mappable = false; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3492 | } |
| 3493 | |
| 3494 | int |
| 3495 | i915_gem_pin_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3496 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3497 | { |
| 3498 | struct drm_i915_gem_pin *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3499 | struct drm_i915_gem_object *obj; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3500 | int ret; |
| 3501 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3502 | ret = i915_mutex_lock_interruptible(dev); |
| 3503 | if (ret) |
| 3504 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3505 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3506 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 3507 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3508 | ret = -ENOENT; |
| 3509 | goto unlock; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3510 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3511 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3512 | if (obj->madv != I915_MADV_WILLNEED) { |
Chris Wilson | bb6baf7 | 2009-09-22 14:24:13 +0100 | [diff] [blame] | 3513 | DRM_ERROR("Attempting to pin a purgeable buffer\n"); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3514 | ret = -EINVAL; |
| 3515 | goto out; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3516 | } |
| 3517 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3518 | if (obj->pin_filp != NULL && obj->pin_filp != file) { |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3519 | DRM_ERROR("Already pinned in i915_gem_pin_ioctl(): %d\n", |
| 3520 | args->handle); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3521 | ret = -EINVAL; |
| 3522 | goto out; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3523 | } |
| 3524 | |
Chris Wilson | 93be878 | 2013-01-02 10:31:22 +0000 | [diff] [blame^] | 3525 | if (obj->user_pin_count == 0) { |
Chris Wilson | 86a1ee2 | 2012-08-11 15:41:04 +0100 | [diff] [blame] | 3526 | ret = i915_gem_object_pin(obj, args->alignment, true, false); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3527 | if (ret) |
| 3528 | goto out; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3529 | } |
| 3530 | |
Chris Wilson | 93be878 | 2013-01-02 10:31:22 +0000 | [diff] [blame^] | 3531 | obj->user_pin_count++; |
| 3532 | obj->pin_filp = file; |
| 3533 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3534 | /* XXX - flush the CPU caches for pinned objects |
| 3535 | * as the X server doesn't manage domains yet |
| 3536 | */ |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3537 | i915_gem_object_flush_cpu_write_domain(obj); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3538 | args->offset = obj->gtt_offset; |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3539 | out: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3540 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3541 | unlock: |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3542 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3543 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3544 | } |
| 3545 | |
| 3546 | int |
| 3547 | i915_gem_unpin_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3548 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3549 | { |
| 3550 | struct drm_i915_gem_pin *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3551 | struct drm_i915_gem_object *obj; |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 3552 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3553 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3554 | ret = i915_mutex_lock_interruptible(dev); |
| 3555 | if (ret) |
| 3556 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3557 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3558 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 3559 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3560 | ret = -ENOENT; |
| 3561 | goto unlock; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3562 | } |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 3563 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3564 | if (obj->pin_filp != file) { |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3565 | DRM_ERROR("Not pinned by caller in i915_gem_pin_ioctl(): %d\n", |
| 3566 | args->handle); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3567 | ret = -EINVAL; |
| 3568 | goto out; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3569 | } |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3570 | obj->user_pin_count--; |
| 3571 | if (obj->user_pin_count == 0) { |
| 3572 | obj->pin_filp = NULL; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3573 | i915_gem_object_unpin(obj); |
| 3574 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3575 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3576 | out: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3577 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3578 | unlock: |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3579 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3580 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3581 | } |
| 3582 | |
| 3583 | int |
| 3584 | i915_gem_busy_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3585 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3586 | { |
| 3587 | struct drm_i915_gem_busy *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3588 | struct drm_i915_gem_object *obj; |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 3589 | int ret; |
| 3590 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3591 | ret = i915_mutex_lock_interruptible(dev); |
| 3592 | if (ret) |
| 3593 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3594 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3595 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 3596 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3597 | ret = -ENOENT; |
| 3598 | goto unlock; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3599 | } |
Zou Nan hai | d1b851f | 2010-05-21 09:08:57 +0800 | [diff] [blame] | 3600 | |
Chris Wilson | 0be555b | 2010-08-04 15:36:30 +0100 | [diff] [blame] | 3601 | /* Count all active objects as busy, even if they are currently not used |
| 3602 | * by the gpu. Users of this interface expect objects to eventually |
| 3603 | * become non-busy without any further actions, therefore emit any |
| 3604 | * necessary flushes here. |
Eric Anholt | c4de0a5 | 2008-12-14 19:05:04 -0800 | [diff] [blame] | 3605 | */ |
Daniel Vetter | 30dfebf | 2012-06-01 15:21:23 +0200 | [diff] [blame] | 3606 | ret = i915_gem_object_flush_active(obj); |
| 3607 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3608 | args->busy = obj->active; |
Chris Wilson | e9808ed | 2012-07-04 12:25:08 +0100 | [diff] [blame] | 3609 | if (obj->ring) { |
| 3610 | BUILD_BUG_ON(I915_NUM_RINGS > 16); |
| 3611 | args->busy |= intel_ring_flag(obj->ring) << 16; |
| 3612 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3613 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3614 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3615 | unlock: |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3616 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3617 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3618 | } |
| 3619 | |
| 3620 | int |
| 3621 | i915_gem_throttle_ioctl(struct drm_device *dev, void *data, |
| 3622 | struct drm_file *file_priv) |
| 3623 | { |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 3624 | return i915_gem_ring_throttle(dev, file_priv); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3625 | } |
| 3626 | |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3627 | int |
| 3628 | i915_gem_madvise_ioctl(struct drm_device *dev, void *data, |
| 3629 | struct drm_file *file_priv) |
| 3630 | { |
| 3631 | struct drm_i915_gem_madvise *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3632 | struct drm_i915_gem_object *obj; |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 3633 | int ret; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3634 | |
| 3635 | switch (args->madv) { |
| 3636 | case I915_MADV_DONTNEED: |
| 3637 | case I915_MADV_WILLNEED: |
| 3638 | break; |
| 3639 | default: |
| 3640 | return -EINVAL; |
| 3641 | } |
| 3642 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3643 | ret = i915_mutex_lock_interruptible(dev); |
| 3644 | if (ret) |
| 3645 | return ret; |
| 3646 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3647 | obj = to_intel_bo(drm_gem_object_lookup(dev, file_priv, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 3648 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3649 | ret = -ENOENT; |
| 3650 | goto unlock; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3651 | } |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3652 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3653 | if (obj->pin_count) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3654 | ret = -EINVAL; |
| 3655 | goto out; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3656 | } |
| 3657 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3658 | if (obj->madv != __I915_MADV_PURGED) |
| 3659 | obj->madv = args->madv; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3660 | |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 3661 | /* if the object is no longer attached, discard its backing storage */ |
| 3662 | if (i915_gem_object_is_purgeable(obj) && obj->pages == NULL) |
Chris Wilson | 2d7ef39 | 2009-09-20 23:13:10 +0100 | [diff] [blame] | 3663 | i915_gem_object_truncate(obj); |
| 3664 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3665 | args->retained = obj->madv != __I915_MADV_PURGED; |
Chris Wilson | bb6baf7 | 2009-09-22 14:24:13 +0100 | [diff] [blame] | 3666 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3667 | out: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3668 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3669 | unlock: |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3670 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3671 | return ret; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3672 | } |
| 3673 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 3674 | void i915_gem_object_init(struct drm_i915_gem_object *obj, |
| 3675 | const struct drm_i915_gem_object_ops *ops) |
Chris Wilson | 0327d6b | 2012-08-11 15:41:06 +0100 | [diff] [blame] | 3676 | { |
Chris Wilson | 0327d6b | 2012-08-11 15:41:06 +0100 | [diff] [blame] | 3677 | INIT_LIST_HEAD(&obj->mm_list); |
| 3678 | INIT_LIST_HEAD(&obj->gtt_list); |
| 3679 | INIT_LIST_HEAD(&obj->ring_list); |
| 3680 | INIT_LIST_HEAD(&obj->exec_list); |
| 3681 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 3682 | obj->ops = ops; |
| 3683 | |
Chris Wilson | 0327d6b | 2012-08-11 15:41:06 +0100 | [diff] [blame] | 3684 | obj->fence_reg = I915_FENCE_REG_NONE; |
| 3685 | obj->madv = I915_MADV_WILLNEED; |
| 3686 | /* Avoid an unnecessary call to unbind on the first bind. */ |
| 3687 | obj->map_and_fenceable = true; |
| 3688 | |
| 3689 | i915_gem_info_add_obj(obj->base.dev->dev_private, obj->base.size); |
| 3690 | } |
| 3691 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 3692 | static const struct drm_i915_gem_object_ops i915_gem_object_ops = { |
| 3693 | .get_pages = i915_gem_object_get_pages_gtt, |
| 3694 | .put_pages = i915_gem_object_put_pages_gtt, |
| 3695 | }; |
| 3696 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3697 | struct drm_i915_gem_object *i915_gem_alloc_object(struct drm_device *dev, |
| 3698 | size_t size) |
Daniel Vetter | ac52bc5 | 2010-04-09 19:05:06 +0000 | [diff] [blame] | 3699 | { |
Daniel Vetter | c397b90 | 2010-04-09 19:05:07 +0000 | [diff] [blame] | 3700 | struct drm_i915_gem_object *obj; |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 3701 | struct address_space *mapping; |
Chris Wilson | bed1ea9 | 2012-05-24 20:48:12 +0100 | [diff] [blame] | 3702 | u32 mask; |
Daniel Vetter | c397b90 | 2010-04-09 19:05:07 +0000 | [diff] [blame] | 3703 | |
| 3704 | obj = kzalloc(sizeof(*obj), GFP_KERNEL); |
| 3705 | if (obj == NULL) |
| 3706 | return NULL; |
| 3707 | |
| 3708 | if (drm_gem_object_init(dev, &obj->base, size) != 0) { |
| 3709 | kfree(obj); |
| 3710 | return NULL; |
| 3711 | } |
| 3712 | |
Chris Wilson | bed1ea9 | 2012-05-24 20:48:12 +0100 | [diff] [blame] | 3713 | mask = GFP_HIGHUSER | __GFP_RECLAIMABLE; |
| 3714 | if (IS_CRESTLINE(dev) || IS_BROADWATER(dev)) { |
| 3715 | /* 965gm cannot relocate objects above 4GiB. */ |
| 3716 | mask &= ~__GFP_HIGHMEM; |
| 3717 | mask |= __GFP_DMA32; |
| 3718 | } |
| 3719 | |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 3720 | mapping = obj->base.filp->f_path.dentry->d_inode->i_mapping; |
Chris Wilson | bed1ea9 | 2012-05-24 20:48:12 +0100 | [diff] [blame] | 3721 | mapping_set_gfp_mask(mapping, mask); |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 3722 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 3723 | i915_gem_object_init(obj, &i915_gem_object_ops); |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 3724 | |
Daniel Vetter | c397b90 | 2010-04-09 19:05:07 +0000 | [diff] [blame] | 3725 | obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
| 3726 | obj->base.read_domains = I915_GEM_DOMAIN_CPU; |
| 3727 | |
Eugeni Dodonov | 3d29b84 | 2012-01-17 14:43:53 -0200 | [diff] [blame] | 3728 | if (HAS_LLC(dev)) { |
| 3729 | /* On some devices, we can have the GPU use the LLC (the CPU |
Eric Anholt | a187111 | 2011-03-29 16:59:55 -0700 | [diff] [blame] | 3730 | * cache) for about a 10% performance improvement |
| 3731 | * compared to uncached. Graphics requests other than |
| 3732 | * display scanout are coherent with the CPU in |
| 3733 | * accessing this cache. This means in this mode we |
| 3734 | * don't need to clflush on the CPU side, and on the |
| 3735 | * GPU side we only need to flush internal caches to |
| 3736 | * get data visible to the CPU. |
| 3737 | * |
| 3738 | * However, we maintain the display planes as UC, and so |
| 3739 | * need to rebind when first used as such. |
| 3740 | */ |
| 3741 | obj->cache_level = I915_CACHE_LLC; |
| 3742 | } else |
| 3743 | obj->cache_level = I915_CACHE_NONE; |
| 3744 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3745 | return obj; |
Daniel Vetter | ac52bc5 | 2010-04-09 19:05:06 +0000 | [diff] [blame] | 3746 | } |
| 3747 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3748 | int i915_gem_init_object(struct drm_gem_object *obj) |
| 3749 | { |
Daniel Vetter | c397b90 | 2010-04-09 19:05:07 +0000 | [diff] [blame] | 3750 | BUG(); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3751 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3752 | return 0; |
| 3753 | } |
| 3754 | |
Chris Wilson | 1488fc0 | 2012-04-24 15:47:31 +0100 | [diff] [blame] | 3755 | void i915_gem_free_object(struct drm_gem_object *gem_obj) |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 3756 | { |
Chris Wilson | 1488fc0 | 2012-04-24 15:47:31 +0100 | [diff] [blame] | 3757 | struct drm_i915_gem_object *obj = to_intel_bo(gem_obj); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3758 | struct drm_device *dev = obj->base.dev; |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 3759 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 3760 | |
Chris Wilson | 26e12f89 | 2011-03-20 11:20:19 +0000 | [diff] [blame] | 3761 | trace_i915_gem_object_destroy(obj); |
| 3762 | |
Chris Wilson | 1488fc0 | 2012-04-24 15:47:31 +0100 | [diff] [blame] | 3763 | if (obj->phys_obj) |
| 3764 | i915_gem_detach_phys_object(dev, obj); |
| 3765 | |
| 3766 | obj->pin_count = 0; |
| 3767 | if (WARN_ON(i915_gem_object_unbind(obj) == -ERESTARTSYS)) { |
| 3768 | bool was_interruptible; |
| 3769 | |
| 3770 | was_interruptible = dev_priv->mm.interruptible; |
| 3771 | dev_priv->mm.interruptible = false; |
| 3772 | |
| 3773 | WARN_ON(i915_gem_object_unbind(obj)); |
| 3774 | |
| 3775 | dev_priv->mm.interruptible = was_interruptible; |
| 3776 | } |
| 3777 | |
Chris Wilson | a557017 | 2012-09-04 21:02:54 +0100 | [diff] [blame] | 3778 | obj->pages_pin_count = 0; |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 3779 | i915_gem_object_put_pages(obj); |
Chris Wilson | d8cb508 | 2012-08-11 15:41:03 +0100 | [diff] [blame] | 3780 | i915_gem_object_free_mmap_offset(obj); |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 3781 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 3782 | BUG_ON(obj->pages); |
| 3783 | |
Chris Wilson | 2f745ad | 2012-09-04 21:02:58 +0100 | [diff] [blame] | 3784 | if (obj->base.import_attach) |
| 3785 | drm_prime_gem_destroy(&obj->base, NULL); |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 3786 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3787 | drm_gem_object_release(&obj->base); |
| 3788 | i915_gem_info_remove_obj(dev_priv, obj->base.size); |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 3789 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3790 | kfree(obj->bit_17); |
| 3791 | kfree(obj); |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 3792 | } |
| 3793 | |
Jesse Barnes | 5669fca | 2009-02-17 15:13:31 -0800 | [diff] [blame] | 3794 | int |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3795 | i915_gem_idle(struct drm_device *dev) |
| 3796 | { |
| 3797 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 3798 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3799 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3800 | mutex_lock(&dev->struct_mutex); |
| 3801 | |
Chris Wilson | 87acb0a | 2010-10-19 10:13:00 +0100 | [diff] [blame] | 3802 | if (dev_priv->mm.suspended) { |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3803 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3804 | return 0; |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3805 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3806 | |
Ben Widawsky | b2da9fe | 2012-04-26 16:02:58 -0700 | [diff] [blame] | 3807 | ret = i915_gpu_idle(dev); |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3808 | if (ret) { |
| 3809 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3810 | return ret; |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3811 | } |
Ben Widawsky | b2da9fe | 2012-04-26 16:02:58 -0700 | [diff] [blame] | 3812 | i915_gem_retire_requests(dev); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3813 | |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 3814 | /* Under UMS, be paranoid and evict. */ |
Chris Wilson | a39d7ef | 2012-04-24 18:22:52 +0100 | [diff] [blame] | 3815 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 3816 | i915_gem_evict_everything(dev); |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 3817 | |
Chris Wilson | 312817a | 2010-11-22 11:50:11 +0000 | [diff] [blame] | 3818 | i915_gem_reset_fences(dev); |
| 3819 | |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 3820 | /* Hack! Don't let anybody do execbuf while we don't control the chip. |
| 3821 | * We need to replace this with a semaphore, or something. |
| 3822 | * And not confound mm.suspended! |
| 3823 | */ |
| 3824 | dev_priv->mm.suspended = 1; |
Daniel Vetter | bc0c7f1 | 2010-08-20 18:18:48 +0200 | [diff] [blame] | 3825 | del_timer_sync(&dev_priv->hangcheck_timer); |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 3826 | |
| 3827 | i915_kernel_lost_context(dev); |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3828 | i915_gem_cleanup_ringbuffer(dev); |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 3829 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3830 | mutex_unlock(&dev->struct_mutex); |
| 3831 | |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 3832 | /* Cancel the retire work handler, which should be idle now. */ |
| 3833 | cancel_delayed_work_sync(&dev_priv->mm.retire_work); |
| 3834 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3835 | return 0; |
| 3836 | } |
| 3837 | |
Ben Widawsky | b9524a1 | 2012-05-25 16:56:24 -0700 | [diff] [blame] | 3838 | void i915_gem_l3_remap(struct drm_device *dev) |
| 3839 | { |
| 3840 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 3841 | u32 misccpctl; |
| 3842 | int i; |
| 3843 | |
| 3844 | if (!IS_IVYBRIDGE(dev)) |
| 3845 | return; |
| 3846 | |
Daniel Vetter | a4da4fa | 2012-11-02 19:55:07 +0100 | [diff] [blame] | 3847 | if (!dev_priv->l3_parity.remap_info) |
Ben Widawsky | b9524a1 | 2012-05-25 16:56:24 -0700 | [diff] [blame] | 3848 | return; |
| 3849 | |
| 3850 | misccpctl = I915_READ(GEN7_MISCCPCTL); |
| 3851 | I915_WRITE(GEN7_MISCCPCTL, misccpctl & ~GEN7_DOP_CLOCK_GATE_ENABLE); |
| 3852 | POSTING_READ(GEN7_MISCCPCTL); |
| 3853 | |
| 3854 | for (i = 0; i < GEN7_L3LOG_SIZE; i += 4) { |
| 3855 | u32 remap = I915_READ(GEN7_L3LOG_BASE + i); |
Daniel Vetter | a4da4fa | 2012-11-02 19:55:07 +0100 | [diff] [blame] | 3856 | if (remap && remap != dev_priv->l3_parity.remap_info[i/4]) |
Ben Widawsky | b9524a1 | 2012-05-25 16:56:24 -0700 | [diff] [blame] | 3857 | DRM_DEBUG("0x%x was already programmed to %x\n", |
| 3858 | GEN7_L3LOG_BASE + i, remap); |
Daniel Vetter | a4da4fa | 2012-11-02 19:55:07 +0100 | [diff] [blame] | 3859 | if (remap && !dev_priv->l3_parity.remap_info[i/4]) |
Ben Widawsky | b9524a1 | 2012-05-25 16:56:24 -0700 | [diff] [blame] | 3860 | DRM_DEBUG_DRIVER("Clearing remapped register\n"); |
Daniel Vetter | a4da4fa | 2012-11-02 19:55:07 +0100 | [diff] [blame] | 3861 | I915_WRITE(GEN7_L3LOG_BASE + i, dev_priv->l3_parity.remap_info[i/4]); |
Ben Widawsky | b9524a1 | 2012-05-25 16:56:24 -0700 | [diff] [blame] | 3862 | } |
| 3863 | |
| 3864 | /* Make sure all the writes land before disabling dop clock gating */ |
| 3865 | POSTING_READ(GEN7_L3LOG_BASE); |
| 3866 | |
| 3867 | I915_WRITE(GEN7_MISCCPCTL, misccpctl); |
| 3868 | } |
| 3869 | |
Daniel Vetter | f691e2f | 2012-02-02 09:58:12 +0100 | [diff] [blame] | 3870 | void i915_gem_init_swizzling(struct drm_device *dev) |
| 3871 | { |
| 3872 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 3873 | |
Daniel Vetter | 11782b0 | 2012-01-31 16:47:55 +0100 | [diff] [blame] | 3874 | if (INTEL_INFO(dev)->gen < 5 || |
Daniel Vetter | f691e2f | 2012-02-02 09:58:12 +0100 | [diff] [blame] | 3875 | dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_NONE) |
| 3876 | return; |
| 3877 | |
| 3878 | I915_WRITE(DISP_ARB_CTL, I915_READ(DISP_ARB_CTL) | |
| 3879 | DISP_TILE_SURFACE_SWIZZLING); |
| 3880 | |
Daniel Vetter | 11782b0 | 2012-01-31 16:47:55 +0100 | [diff] [blame] | 3881 | if (IS_GEN5(dev)) |
| 3882 | return; |
| 3883 | |
Daniel Vetter | f691e2f | 2012-02-02 09:58:12 +0100 | [diff] [blame] | 3884 | I915_WRITE(TILECTL, I915_READ(TILECTL) | TILECTL_SWZCTL); |
| 3885 | if (IS_GEN6(dev)) |
Daniel Vetter | 6b26c86 | 2012-04-24 14:04:12 +0200 | [diff] [blame] | 3886 | I915_WRITE(ARB_MODE, _MASKED_BIT_ENABLE(ARB_MODE_SWIZZLE_SNB)); |
Daniel Vetter | f691e2f | 2012-02-02 09:58:12 +0100 | [diff] [blame] | 3887 | else |
Daniel Vetter | 6b26c86 | 2012-04-24 14:04:12 +0200 | [diff] [blame] | 3888 | I915_WRITE(ARB_MODE, _MASKED_BIT_ENABLE(ARB_MODE_SWIZZLE_IVB)); |
Daniel Vetter | f691e2f | 2012-02-02 09:58:12 +0100 | [diff] [blame] | 3889 | } |
Daniel Vetter | e21af88 | 2012-02-09 20:53:27 +0100 | [diff] [blame] | 3890 | |
Chris Wilson | 67b1b57 | 2012-07-05 23:49:40 +0100 | [diff] [blame] | 3891 | static bool |
| 3892 | intel_enable_blt(struct drm_device *dev) |
| 3893 | { |
| 3894 | if (!HAS_BLT(dev)) |
| 3895 | return false; |
| 3896 | |
| 3897 | /* The blitter was dysfunctional on early prototypes */ |
| 3898 | if (IS_GEN6(dev) && dev->pdev->revision < 8) { |
| 3899 | DRM_INFO("BLT not supported on this pre-production hardware;" |
| 3900 | " graphics performance will be degraded.\n"); |
| 3901 | return false; |
| 3902 | } |
| 3903 | |
| 3904 | return true; |
| 3905 | } |
| 3906 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3907 | int |
Daniel Vetter | f691e2f | 2012-02-02 09:58:12 +0100 | [diff] [blame] | 3908 | i915_gem_init_hw(struct drm_device *dev) |
Zou Nan hai | 8187a2b | 2010-05-21 09:08:55 +0800 | [diff] [blame] | 3909 | { |
| 3910 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 3911 | int ret; |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 3912 | |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 3913 | if (INTEL_INFO(dev)->gen < 6 && !intel_enable_gtt()) |
Daniel Vetter | 8ecd1a6 | 2012-06-07 15:56:03 +0200 | [diff] [blame] | 3914 | return -EIO; |
| 3915 | |
Rodrigo Vivi | eda2d7f | 2012-10-10 18:35:28 -0300 | [diff] [blame] | 3916 | if (IS_HASWELL(dev) && (I915_READ(0x120010) == 1)) |
| 3917 | I915_WRITE(0x9008, I915_READ(0x9008) | 0xf0000); |
| 3918 | |
Ben Widawsky | b9524a1 | 2012-05-25 16:56:24 -0700 | [diff] [blame] | 3919 | i915_gem_l3_remap(dev); |
| 3920 | |
Daniel Vetter | f691e2f | 2012-02-02 09:58:12 +0100 | [diff] [blame] | 3921 | i915_gem_init_swizzling(dev); |
| 3922 | |
Xiang, Haihao | 5c1143b | 2010-09-16 10:43:11 +0800 | [diff] [blame] | 3923 | ret = intel_init_render_ring_buffer(dev); |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 3924 | if (ret) |
Chris Wilson | b6913e4 | 2010-11-12 10:46:37 +0000 | [diff] [blame] | 3925 | return ret; |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 3926 | |
| 3927 | if (HAS_BSD(dev)) { |
Xiang, Haihao | 5c1143b | 2010-09-16 10:43:11 +0800 | [diff] [blame] | 3928 | ret = intel_init_bsd_ring_buffer(dev); |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 3929 | if (ret) |
| 3930 | goto cleanup_render_ring; |
Zou Nan hai | d1b851f | 2010-05-21 09:08:57 +0800 | [diff] [blame] | 3931 | } |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 3932 | |
Chris Wilson | 67b1b57 | 2012-07-05 23:49:40 +0100 | [diff] [blame] | 3933 | if (intel_enable_blt(dev)) { |
Chris Wilson | 549f736 | 2010-10-19 11:19:32 +0100 | [diff] [blame] | 3934 | ret = intel_init_blt_ring_buffer(dev); |
| 3935 | if (ret) |
| 3936 | goto cleanup_bsd_ring; |
| 3937 | } |
| 3938 | |
Chris Wilson | 6f392d548 | 2010-08-07 11:01:22 +0100 | [diff] [blame] | 3939 | dev_priv->next_seqno = 1; |
| 3940 | |
Ben Widawsky | 254f965 | 2012-06-04 14:42:42 -0700 | [diff] [blame] | 3941 | /* |
| 3942 | * XXX: There was some w/a described somewhere suggesting loading |
| 3943 | * contexts before PPGTT. |
| 3944 | */ |
| 3945 | i915_gem_context_init(dev); |
Daniel Vetter | e21af88 | 2012-02-09 20:53:27 +0100 | [diff] [blame] | 3946 | i915_gem_init_ppgtt(dev); |
| 3947 | |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 3948 | return 0; |
| 3949 | |
Chris Wilson | 549f736 | 2010-10-19 11:19:32 +0100 | [diff] [blame] | 3950 | cleanup_bsd_ring: |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 3951 | intel_cleanup_ring_buffer(&dev_priv->ring[VCS]); |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 3952 | cleanup_render_ring: |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 3953 | intel_cleanup_ring_buffer(&dev_priv->ring[RCS]); |
Zou Nan hai | 8187a2b | 2010-05-21 09:08:55 +0800 | [diff] [blame] | 3954 | return ret; |
| 3955 | } |
| 3956 | |
Chris Wilson | 1070a42 | 2012-04-24 15:47:41 +0100 | [diff] [blame] | 3957 | static bool |
| 3958 | intel_enable_ppgtt(struct drm_device *dev) |
| 3959 | { |
| 3960 | if (i915_enable_ppgtt >= 0) |
| 3961 | return i915_enable_ppgtt; |
| 3962 | |
| 3963 | #ifdef CONFIG_INTEL_IOMMU |
| 3964 | /* Disable ppgtt on SNB if VT-d is on. */ |
| 3965 | if (INTEL_INFO(dev)->gen == 6 && intel_iommu_gfx_mapped) |
| 3966 | return false; |
| 3967 | #endif |
| 3968 | |
| 3969 | return true; |
| 3970 | } |
| 3971 | |
| 3972 | int i915_gem_init(struct drm_device *dev) |
| 3973 | { |
| 3974 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3975 | unsigned long gtt_size, mappable_size; |
| 3976 | int ret; |
| 3977 | |
| 3978 | gtt_size = dev_priv->mm.gtt->gtt_total_entries << PAGE_SHIFT; |
| 3979 | mappable_size = dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT; |
| 3980 | |
| 3981 | mutex_lock(&dev->struct_mutex); |
| 3982 | if (intel_enable_ppgtt(dev) && HAS_ALIASING_PPGTT(dev)) { |
| 3983 | /* PPGTT pdes are stolen from global gtt ptes, so shrink the |
| 3984 | * aperture accordingly when using aliasing ppgtt. */ |
| 3985 | gtt_size -= I915_PPGTT_PD_ENTRIES*PAGE_SIZE; |
| 3986 | |
| 3987 | i915_gem_init_global_gtt(dev, 0, mappable_size, gtt_size); |
| 3988 | |
| 3989 | ret = i915_gem_init_aliasing_ppgtt(dev); |
| 3990 | if (ret) { |
| 3991 | mutex_unlock(&dev->struct_mutex); |
| 3992 | return ret; |
| 3993 | } |
| 3994 | } else { |
| 3995 | /* Let GEM Manage all of the aperture. |
| 3996 | * |
| 3997 | * However, leave one page at the end still bound to the scratch |
| 3998 | * page. There are a number of places where the hardware |
| 3999 | * apparently prefetches past the end of the object, and we've |
| 4000 | * seen multiple hangs with the GPU head pointer stuck in a |
| 4001 | * batchbuffer bound at the last page of the aperture. One page |
| 4002 | * should be enough to keep any prefetching inside of the |
| 4003 | * aperture. |
| 4004 | */ |
| 4005 | i915_gem_init_global_gtt(dev, 0, mappable_size, |
| 4006 | gtt_size); |
| 4007 | } |
| 4008 | |
| 4009 | ret = i915_gem_init_hw(dev); |
| 4010 | mutex_unlock(&dev->struct_mutex); |
| 4011 | if (ret) { |
| 4012 | i915_gem_cleanup_aliasing_ppgtt(dev); |
| 4013 | return ret; |
| 4014 | } |
| 4015 | |
Daniel Vetter | 53ca26c | 2012-04-26 23:28:03 +0200 | [diff] [blame] | 4016 | /* Allow hardware batchbuffers unless told otherwise, but not for KMS. */ |
| 4017 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
| 4018 | dev_priv->dri1.allow_batchbuffer = 1; |
Chris Wilson | 1070a42 | 2012-04-24 15:47:41 +0100 | [diff] [blame] | 4019 | return 0; |
| 4020 | } |
| 4021 | |
Zou Nan hai | 8187a2b | 2010-05-21 09:08:55 +0800 | [diff] [blame] | 4022 | void |
| 4023 | i915_gem_cleanup_ringbuffer(struct drm_device *dev) |
| 4024 | { |
| 4025 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 4026 | struct intel_ring_buffer *ring; |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 4027 | int i; |
Zou Nan hai | 8187a2b | 2010-05-21 09:08:55 +0800 | [diff] [blame] | 4028 | |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 4029 | for_each_ring(ring, dev_priv, i) |
| 4030 | intel_cleanup_ring_buffer(ring); |
Zou Nan hai | 8187a2b | 2010-05-21 09:08:55 +0800 | [diff] [blame] | 4031 | } |
| 4032 | |
| 4033 | int |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4034 | i915_gem_entervt_ioctl(struct drm_device *dev, void *data, |
| 4035 | struct drm_file *file_priv) |
| 4036 | { |
| 4037 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 4038 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4039 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 4040 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
| 4041 | return 0; |
| 4042 | |
Ben Gamari | ba1234d | 2009-09-14 17:48:47 -0400 | [diff] [blame] | 4043 | if (atomic_read(&dev_priv->mm.wedged)) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4044 | DRM_ERROR("Reenabling wedged hardware, good luck\n"); |
Ben Gamari | ba1234d | 2009-09-14 17:48:47 -0400 | [diff] [blame] | 4045 | atomic_set(&dev_priv->mm.wedged, 0); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4046 | } |
| 4047 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4048 | mutex_lock(&dev->struct_mutex); |
Eric Anholt | 9bb2d6f | 2008-12-23 18:42:32 -0800 | [diff] [blame] | 4049 | dev_priv->mm.suspended = 0; |
| 4050 | |
Daniel Vetter | f691e2f | 2012-02-02 09:58:12 +0100 | [diff] [blame] | 4051 | ret = i915_gem_init_hw(dev); |
Wu Fengguang | d816f6a | 2009-04-18 10:43:32 +0800 | [diff] [blame] | 4052 | if (ret != 0) { |
| 4053 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 9bb2d6f | 2008-12-23 18:42:32 -0800 | [diff] [blame] | 4054 | return ret; |
Wu Fengguang | d816f6a | 2009-04-18 10:43:32 +0800 | [diff] [blame] | 4055 | } |
Eric Anholt | 9bb2d6f | 2008-12-23 18:42:32 -0800 | [diff] [blame] | 4056 | |
Chris Wilson | 69dc498 | 2010-10-19 10:36:51 +0100 | [diff] [blame] | 4057 | BUG_ON(!list_empty(&dev_priv->mm.active_list)); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4058 | mutex_unlock(&dev->struct_mutex); |
Kristian Høgsberg | dbb19d3 | 2008-08-20 11:04:27 -0400 | [diff] [blame] | 4059 | |
Chris Wilson | 5f35308 | 2010-06-07 14:03:03 +0100 | [diff] [blame] | 4060 | ret = drm_irq_install(dev); |
| 4061 | if (ret) |
| 4062 | goto cleanup_ringbuffer; |
Kristian Høgsberg | dbb19d3 | 2008-08-20 11:04:27 -0400 | [diff] [blame] | 4063 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4064 | return 0; |
Chris Wilson | 5f35308 | 2010-06-07 14:03:03 +0100 | [diff] [blame] | 4065 | |
| 4066 | cleanup_ringbuffer: |
| 4067 | mutex_lock(&dev->struct_mutex); |
| 4068 | i915_gem_cleanup_ringbuffer(dev); |
| 4069 | dev_priv->mm.suspended = 1; |
| 4070 | mutex_unlock(&dev->struct_mutex); |
| 4071 | |
| 4072 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4073 | } |
| 4074 | |
| 4075 | int |
| 4076 | i915_gem_leavevt_ioctl(struct drm_device *dev, void *data, |
| 4077 | struct drm_file *file_priv) |
| 4078 | { |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 4079 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
| 4080 | return 0; |
| 4081 | |
Kristian Høgsberg | dbb19d3 | 2008-08-20 11:04:27 -0400 | [diff] [blame] | 4082 | drm_irq_uninstall(dev); |
Linus Torvalds | e6890f6 | 2009-09-08 17:09:24 -0700 | [diff] [blame] | 4083 | return i915_gem_idle(dev); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4084 | } |
| 4085 | |
| 4086 | void |
| 4087 | i915_gem_lastclose(struct drm_device *dev) |
| 4088 | { |
| 4089 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4090 | |
Eric Anholt | e806b49 | 2009-01-22 09:56:58 -0800 | [diff] [blame] | 4091 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
| 4092 | return; |
| 4093 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 4094 | ret = i915_gem_idle(dev); |
| 4095 | if (ret) |
| 4096 | DRM_ERROR("failed to idle hardware: %d\n", ret); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4097 | } |
| 4098 | |
Chris Wilson | 6419340 | 2010-10-24 12:38:05 +0100 | [diff] [blame] | 4099 | static void |
| 4100 | init_ring_lists(struct intel_ring_buffer *ring) |
| 4101 | { |
| 4102 | INIT_LIST_HEAD(&ring->active_list); |
| 4103 | INIT_LIST_HEAD(&ring->request_list); |
Chris Wilson | 6419340 | 2010-10-24 12:38:05 +0100 | [diff] [blame] | 4104 | } |
| 4105 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4106 | void |
| 4107 | i915_gem_load(struct drm_device *dev) |
| 4108 | { |
Grégoire Henry | b5aa8a0 | 2009-06-23 15:41:02 +0200 | [diff] [blame] | 4109 | int i; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4110 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 4111 | |
Chris Wilson | 69dc498 | 2010-10-19 10:36:51 +0100 | [diff] [blame] | 4112 | INIT_LIST_HEAD(&dev_priv->mm.active_list); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4113 | INIT_LIST_HEAD(&dev_priv->mm.inactive_list); |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 4114 | INIT_LIST_HEAD(&dev_priv->mm.unbound_list); |
| 4115 | INIT_LIST_HEAD(&dev_priv->mm.bound_list); |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 4116 | INIT_LIST_HEAD(&dev_priv->mm.fence_list); |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 4117 | for (i = 0; i < I915_NUM_RINGS; i++) |
| 4118 | init_ring_lists(&dev_priv->ring[i]); |
Daniel Vetter | 4b9de73 | 2011-10-09 21:52:02 +0200 | [diff] [blame] | 4119 | for (i = 0; i < I915_MAX_NUM_FENCES; i++) |
Daniel Vetter | 007cc8a | 2010-04-28 11:02:31 +0200 | [diff] [blame] | 4120 | INIT_LIST_HEAD(&dev_priv->fence_regs[i].lru_list); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4121 | INIT_DELAYED_WORK(&dev_priv->mm.retire_work, |
| 4122 | i915_gem_retire_work_handler); |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 4123 | init_completion(&dev_priv->error_completion); |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4124 | |
Dave Airlie | 9440012 | 2010-07-20 13:15:31 +1000 | [diff] [blame] | 4125 | /* On GEN3 we really need to make sure the ARB C3 LP bit is set */ |
| 4126 | if (IS_GEN3(dev)) { |
Daniel Vetter | 5074329 | 2012-04-26 22:02:54 +0200 | [diff] [blame] | 4127 | I915_WRITE(MI_ARB_STATE, |
| 4128 | _MASKED_BIT_ENABLE(MI_ARB_C3_LP_WRITE_ENABLE)); |
Dave Airlie | 9440012 | 2010-07-20 13:15:31 +1000 | [diff] [blame] | 4129 | } |
| 4130 | |
Chris Wilson | 72bfa19 | 2010-12-19 11:42:05 +0000 | [diff] [blame] | 4131 | dev_priv->relative_constants_mode = I915_EXEC_CONSTANTS_REL_GENERAL; |
| 4132 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 4133 | /* Old X drivers will take 0-2 for front, back, depth buffers */ |
Eric Anholt | b397c83 | 2010-01-26 09:43:10 -0800 | [diff] [blame] | 4134 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
| 4135 | dev_priv->fence_reg_start = 3; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 4136 | |
Chris Wilson | a6c45cf | 2010-09-17 00:32:17 +0100 | [diff] [blame] | 4137 | if (INTEL_INFO(dev)->gen >= 4 || IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 4138 | dev_priv->num_fence_regs = 16; |
| 4139 | else |
| 4140 | dev_priv->num_fence_regs = 8; |
| 4141 | |
Grégoire Henry | b5aa8a0 | 2009-06-23 15:41:02 +0200 | [diff] [blame] | 4142 | /* Initialize fence registers to zero */ |
Chris Wilson | ada726c | 2012-04-17 15:31:32 +0100 | [diff] [blame] | 4143 | i915_gem_reset_fences(dev); |
Eric Anholt | 10ed13e | 2011-05-06 13:53:49 -0700 | [diff] [blame] | 4144 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4145 | i915_gem_detect_bit_6_swizzle(dev); |
Kristian Høgsberg | 6b95a20 | 2009-11-18 11:25:18 -0500 | [diff] [blame] | 4146 | init_waitqueue_head(&dev_priv->pending_flip_queue); |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 4147 | |
Chris Wilson | ce453d8 | 2011-02-21 14:43:56 +0000 | [diff] [blame] | 4148 | dev_priv->mm.interruptible = true; |
| 4149 | |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 4150 | dev_priv->mm.inactive_shrinker.shrink = i915_gem_inactive_shrink; |
| 4151 | dev_priv->mm.inactive_shrinker.seeks = DEFAULT_SEEKS; |
| 4152 | register_shrinker(&dev_priv->mm.inactive_shrinker); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4153 | } |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4154 | |
| 4155 | /* |
| 4156 | * Create a physically contiguous memory object for this object |
| 4157 | * e.g. for cursor + overlay regs |
| 4158 | */ |
Chris Wilson | 995b676 | 2010-08-20 13:23:26 +0100 | [diff] [blame] | 4159 | static int i915_gem_init_phys_object(struct drm_device *dev, |
| 4160 | int id, int size, int align) |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4161 | { |
| 4162 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 4163 | struct drm_i915_gem_phys_object *phys_obj; |
| 4164 | int ret; |
| 4165 | |
| 4166 | if (dev_priv->mm.phys_objs[id - 1] || !size) |
| 4167 | return 0; |
| 4168 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 4169 | phys_obj = kzalloc(sizeof(struct drm_i915_gem_phys_object), GFP_KERNEL); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4170 | if (!phys_obj) |
| 4171 | return -ENOMEM; |
| 4172 | |
| 4173 | phys_obj->id = id; |
| 4174 | |
Chris Wilson | 6eeefaf | 2010-08-07 11:01:39 +0100 | [diff] [blame] | 4175 | phys_obj->handle = drm_pci_alloc(dev, size, align); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4176 | if (!phys_obj->handle) { |
| 4177 | ret = -ENOMEM; |
| 4178 | goto kfree_obj; |
| 4179 | } |
| 4180 | #ifdef CONFIG_X86 |
| 4181 | set_memory_wc((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); |
| 4182 | #endif |
| 4183 | |
| 4184 | dev_priv->mm.phys_objs[id - 1] = phys_obj; |
| 4185 | |
| 4186 | return 0; |
| 4187 | kfree_obj: |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 4188 | kfree(phys_obj); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4189 | return ret; |
| 4190 | } |
| 4191 | |
Chris Wilson | 995b676 | 2010-08-20 13:23:26 +0100 | [diff] [blame] | 4192 | static void i915_gem_free_phys_object(struct drm_device *dev, int id) |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4193 | { |
| 4194 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 4195 | struct drm_i915_gem_phys_object *phys_obj; |
| 4196 | |
| 4197 | if (!dev_priv->mm.phys_objs[id - 1]) |
| 4198 | return; |
| 4199 | |
| 4200 | phys_obj = dev_priv->mm.phys_objs[id - 1]; |
| 4201 | if (phys_obj->cur_obj) { |
| 4202 | i915_gem_detach_phys_object(dev, phys_obj->cur_obj); |
| 4203 | } |
| 4204 | |
| 4205 | #ifdef CONFIG_X86 |
| 4206 | set_memory_wb((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); |
| 4207 | #endif |
| 4208 | drm_pci_free(dev, phys_obj->handle); |
| 4209 | kfree(phys_obj); |
| 4210 | dev_priv->mm.phys_objs[id - 1] = NULL; |
| 4211 | } |
| 4212 | |
| 4213 | void i915_gem_free_all_phys_object(struct drm_device *dev) |
| 4214 | { |
| 4215 | int i; |
| 4216 | |
Dave Airlie | 260883c | 2009-01-22 17:58:49 +1000 | [diff] [blame] | 4217 | for (i = I915_GEM_PHYS_CURSOR_0; i <= I915_MAX_PHYS_OBJECT; i++) |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4218 | i915_gem_free_phys_object(dev, i); |
| 4219 | } |
| 4220 | |
| 4221 | void i915_gem_detach_phys_object(struct drm_device *dev, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4222 | struct drm_i915_gem_object *obj) |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4223 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4224 | struct address_space *mapping = obj->base.filp->f_path.dentry->d_inode->i_mapping; |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 4225 | char *vaddr; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4226 | int i; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4227 | int page_count; |
| 4228 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4229 | if (!obj->phys_obj) |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4230 | return; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4231 | vaddr = obj->phys_obj->handle->vaddr; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4232 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4233 | page_count = obj->base.size / PAGE_SIZE; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4234 | for (i = 0; i < page_count; i++) { |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 4235 | struct page *page = shmem_read_mapping_page(mapping, i); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 4236 | if (!IS_ERR(page)) { |
| 4237 | char *dst = kmap_atomic(page); |
| 4238 | memcpy(dst, vaddr + i*PAGE_SIZE, PAGE_SIZE); |
| 4239 | kunmap_atomic(dst); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4240 | |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 4241 | drm_clflush_pages(&page, 1); |
| 4242 | |
| 4243 | set_page_dirty(page); |
| 4244 | mark_page_accessed(page); |
| 4245 | page_cache_release(page); |
| 4246 | } |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4247 | } |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 4248 | i915_gem_chipset_flush(dev); |
Chris Wilson | d78b47b | 2009-06-17 21:52:49 +0100 | [diff] [blame] | 4249 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4250 | obj->phys_obj->cur_obj = NULL; |
| 4251 | obj->phys_obj = NULL; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4252 | } |
| 4253 | |
| 4254 | int |
| 4255 | i915_gem_attach_phys_object(struct drm_device *dev, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4256 | struct drm_i915_gem_object *obj, |
Chris Wilson | 6eeefaf | 2010-08-07 11:01:39 +0100 | [diff] [blame] | 4257 | int id, |
| 4258 | int align) |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4259 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4260 | struct address_space *mapping = obj->base.filp->f_path.dentry->d_inode->i_mapping; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4261 | drm_i915_private_t *dev_priv = dev->dev_private; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4262 | int ret = 0; |
| 4263 | int page_count; |
| 4264 | int i; |
| 4265 | |
| 4266 | if (id > I915_MAX_PHYS_OBJECT) |
| 4267 | return -EINVAL; |
| 4268 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4269 | if (obj->phys_obj) { |
| 4270 | if (obj->phys_obj->id == id) |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4271 | return 0; |
| 4272 | i915_gem_detach_phys_object(dev, obj); |
| 4273 | } |
| 4274 | |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4275 | /* create a new object */ |
| 4276 | if (!dev_priv->mm.phys_objs[id - 1]) { |
| 4277 | ret = i915_gem_init_phys_object(dev, id, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4278 | obj->base.size, align); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4279 | if (ret) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4280 | DRM_ERROR("failed to init phys object %d size: %zu\n", |
| 4281 | id, obj->base.size); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 4282 | return ret; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4283 | } |
| 4284 | } |
| 4285 | |
| 4286 | /* bind to the object */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4287 | obj->phys_obj = dev_priv->mm.phys_objs[id - 1]; |
| 4288 | obj->phys_obj->cur_obj = obj; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4289 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4290 | page_count = obj->base.size / PAGE_SIZE; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4291 | |
| 4292 | for (i = 0; i < page_count; i++) { |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 4293 | struct page *page; |
| 4294 | char *dst, *src; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4295 | |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 4296 | page = shmem_read_mapping_page(mapping, i); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 4297 | if (IS_ERR(page)) |
| 4298 | return PTR_ERR(page); |
| 4299 | |
Chris Wilson | ff75b9b | 2010-10-30 22:52:31 +0100 | [diff] [blame] | 4300 | src = kmap_atomic(page); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4301 | dst = obj->phys_obj->handle->vaddr + (i * PAGE_SIZE); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4302 | memcpy(dst, src, PAGE_SIZE); |
Peter Zijlstra | 3e4d3af | 2010-10-26 14:21:51 -0700 | [diff] [blame] | 4303 | kunmap_atomic(src); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 4304 | |
| 4305 | mark_page_accessed(page); |
| 4306 | page_cache_release(page); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4307 | } |
| 4308 | |
| 4309 | return 0; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4310 | } |
| 4311 | |
| 4312 | static int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4313 | i915_gem_phys_pwrite(struct drm_device *dev, |
| 4314 | struct drm_i915_gem_object *obj, |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4315 | struct drm_i915_gem_pwrite *args, |
| 4316 | struct drm_file *file_priv) |
| 4317 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4318 | void *vaddr = obj->phys_obj->handle->vaddr + args->offset; |
Chris Wilson | b47b30c | 2010-11-08 01:12:29 +0000 | [diff] [blame] | 4319 | char __user *user_data = (char __user *) (uintptr_t) args->data_ptr; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4320 | |
Chris Wilson | b47b30c | 2010-11-08 01:12:29 +0000 | [diff] [blame] | 4321 | if (__copy_from_user_inatomic_nocache(vaddr, user_data, args->size)) { |
| 4322 | unsigned long unwritten; |
| 4323 | |
| 4324 | /* The physical object once assigned is fixed for the lifetime |
| 4325 | * of the obj, so we can safely drop the lock and continue |
| 4326 | * to access vaddr. |
| 4327 | */ |
| 4328 | mutex_unlock(&dev->struct_mutex); |
| 4329 | unwritten = copy_from_user(vaddr, user_data, args->size); |
| 4330 | mutex_lock(&dev->struct_mutex); |
| 4331 | if (unwritten) |
| 4332 | return -EFAULT; |
| 4333 | } |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4334 | |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 4335 | i915_gem_chipset_flush(dev); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4336 | return 0; |
| 4337 | } |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 4338 | |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 4339 | void i915_gem_release(struct drm_device *dev, struct drm_file *file) |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 4340 | { |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 4341 | struct drm_i915_file_private *file_priv = file->driver_priv; |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 4342 | |
| 4343 | /* Clean up our request list when the client is going away, so that |
| 4344 | * later retire_requests won't dereference our soon-to-be-gone |
| 4345 | * file_priv. |
| 4346 | */ |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 4347 | spin_lock(&file_priv->mm.lock); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 4348 | while (!list_empty(&file_priv->mm.request_list)) { |
| 4349 | struct drm_i915_gem_request *request; |
| 4350 | |
| 4351 | request = list_first_entry(&file_priv->mm.request_list, |
| 4352 | struct drm_i915_gem_request, |
| 4353 | client_list); |
| 4354 | list_del(&request->client_list); |
| 4355 | request->file_priv = NULL; |
| 4356 | } |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 4357 | spin_unlock(&file_priv->mm.lock); |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 4358 | } |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4359 | |
Chris Wilson | 5774506 | 2012-11-21 13:04:04 +0000 | [diff] [blame] | 4360 | static bool mutex_is_locked_by(struct mutex *mutex, struct task_struct *task) |
| 4361 | { |
| 4362 | if (!mutex_is_locked(mutex)) |
| 4363 | return false; |
| 4364 | |
| 4365 | #if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_MUTEXES) |
| 4366 | return mutex->owner == task; |
| 4367 | #else |
| 4368 | /* Since UP may be pre-empted, we cannot assume that we own the lock */ |
| 4369 | return false; |
| 4370 | #endif |
| 4371 | } |
| 4372 | |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4373 | static int |
Ying Han | 1495f23 | 2011-05-24 17:12:27 -0700 | [diff] [blame] | 4374 | i915_gem_inactive_shrink(struct shrinker *shrinker, struct shrink_control *sc) |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4375 | { |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 4376 | struct drm_i915_private *dev_priv = |
| 4377 | container_of(shrinker, |
| 4378 | struct drm_i915_private, |
| 4379 | mm.inactive_shrinker); |
| 4380 | struct drm_device *dev = dev_priv->dev; |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 4381 | struct drm_i915_gem_object *obj; |
Ying Han | 1495f23 | 2011-05-24 17:12:27 -0700 | [diff] [blame] | 4382 | int nr_to_scan = sc->nr_to_scan; |
Chris Wilson | 5774506 | 2012-11-21 13:04:04 +0000 | [diff] [blame] | 4383 | bool unlock = true; |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 4384 | int cnt; |
| 4385 | |
Chris Wilson | 5774506 | 2012-11-21 13:04:04 +0000 | [diff] [blame] | 4386 | if (!mutex_trylock(&dev->struct_mutex)) { |
| 4387 | if (!mutex_is_locked_by(&dev->struct_mutex, current)) |
| 4388 | return 0; |
| 4389 | |
Daniel Vetter | 677feac | 2012-12-19 14:33:45 +0100 | [diff] [blame] | 4390 | if (dev_priv->mm.shrinker_no_lock_stealing) |
| 4391 | return 0; |
| 4392 | |
Chris Wilson | 5774506 | 2012-11-21 13:04:04 +0000 | [diff] [blame] | 4393 | unlock = false; |
| 4394 | } |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4395 | |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 4396 | if (nr_to_scan) { |
| 4397 | nr_to_scan -= i915_gem_purge(dev_priv, nr_to_scan); |
| 4398 | if (nr_to_scan > 0) |
| 4399 | i915_gem_shrink_all(dev_priv); |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4400 | } |
| 4401 | |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 4402 | cnt = 0; |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 4403 | list_for_each_entry(obj, &dev_priv->mm.unbound_list, gtt_list) |
Chris Wilson | a557017 | 2012-09-04 21:02:54 +0100 | [diff] [blame] | 4404 | if (obj->pages_pin_count == 0) |
| 4405 | cnt += obj->base.size >> PAGE_SHIFT; |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 4406 | list_for_each_entry(obj, &dev_priv->mm.bound_list, gtt_list) |
Chris Wilson | a557017 | 2012-09-04 21:02:54 +0100 | [diff] [blame] | 4407 | if (obj->pin_count == 0 && obj->pages_pin_count == 0) |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 4408 | cnt += obj->base.size >> PAGE_SHIFT; |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4409 | |
Chris Wilson | 5774506 | 2012-11-21 13:04:04 +0000 | [diff] [blame] | 4410 | if (unlock) |
| 4411 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 4412 | return cnt; |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4413 | } |