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 | |
| 28 | #include "drmP.h" |
| 29 | #include "drm.h" |
| 30 | #include "i915_drm.h" |
| 31 | #include "i915_drv.h" |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 32 | #include "i915_trace.h" |
Jesse Barnes | 652c393 | 2009-08-17 13:31:43 -0700 | [diff] [blame] | 33 | #include "intel_drv.h" |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 34 | #include <linux/shmem_fs.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 35 | #include <linux/slab.h> |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 36 | #include <linux/swap.h> |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 37 | #include <linux/pci.h> |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 38 | |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 39 | static __must_check int i915_gem_object_flush_gpu_write_domain(struct drm_i915_gem_object *obj); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 40 | static void i915_gem_object_flush_gtt_write_domain(struct drm_i915_gem_object *obj); |
| 41 | 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] | 42 | static __must_check int i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, |
| 43 | bool write); |
| 44 | static __must_check int i915_gem_object_set_cpu_read_domain_range(struct drm_i915_gem_object *obj, |
| 45 | uint64_t offset, |
| 46 | uint64_t size); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 47 | static void i915_gem_object_set_to_full_cpu_read_domain(struct drm_i915_gem_object *obj); |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 48 | static __must_check int i915_gem_object_bind_to_gtt(struct drm_i915_gem_object *obj, |
| 49 | unsigned alignment, |
| 50 | bool map_and_fenceable); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 51 | static void i915_gem_clear_fence_reg(struct drm_device *dev, |
| 52 | struct drm_i915_fence_reg *reg); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 53 | static int i915_gem_phys_pwrite(struct drm_device *dev, |
| 54 | struct drm_i915_gem_object *obj, |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 55 | struct drm_i915_gem_pwrite *args, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 56 | struct drm_file *file); |
| 57 | static void i915_gem_free_object_tail(struct drm_i915_gem_object *obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 58 | |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 59 | static int i915_gem_inactive_shrink(struct shrinker *shrinker, |
Ying Han | 1495f23 | 2011-05-24 17:12:27 -0700 | [diff] [blame] | 60 | struct shrink_control *sc); |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 61 | |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 62 | /* some bookkeeping */ |
| 63 | static void i915_gem_info_add_obj(struct drm_i915_private *dev_priv, |
| 64 | size_t size) |
| 65 | { |
| 66 | dev_priv->mm.object_count++; |
| 67 | dev_priv->mm.object_memory += size; |
| 68 | } |
| 69 | |
| 70 | static void i915_gem_info_remove_obj(struct drm_i915_private *dev_priv, |
| 71 | size_t size) |
| 72 | { |
| 73 | dev_priv->mm.object_count--; |
| 74 | dev_priv->mm.object_memory -= size; |
| 75 | } |
| 76 | |
Chris Wilson | 21dd373 | 2011-01-26 15:55:56 +0000 | [diff] [blame] | 77 | static int |
| 78 | i915_gem_wait_for_error(struct drm_device *dev) |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 79 | { |
| 80 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 81 | struct completion *x = &dev_priv->error_completion; |
| 82 | unsigned long flags; |
| 83 | int ret; |
| 84 | |
| 85 | if (!atomic_read(&dev_priv->mm.wedged)) |
| 86 | return 0; |
| 87 | |
| 88 | ret = wait_for_completion_interruptible(x); |
| 89 | if (ret) |
| 90 | return ret; |
| 91 | |
Chris Wilson | 21dd373 | 2011-01-26 15:55:56 +0000 | [diff] [blame] | 92 | if (atomic_read(&dev_priv->mm.wedged)) { |
| 93 | /* GPU is hung, bump the completion count to account for |
| 94 | * the token we just consumed so that we never hit zero and |
| 95 | * end up waiting upon a subsequent completion event that |
| 96 | * will never happen. |
| 97 | */ |
| 98 | spin_lock_irqsave(&x->wait.lock, flags); |
| 99 | x->done++; |
| 100 | spin_unlock_irqrestore(&x->wait.lock, flags); |
| 101 | } |
| 102 | return 0; |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 103 | } |
| 104 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 105 | int i915_mutex_lock_interruptible(struct drm_device *dev) |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 106 | { |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 107 | int ret; |
| 108 | |
Chris Wilson | 21dd373 | 2011-01-26 15:55:56 +0000 | [diff] [blame] | 109 | ret = i915_gem_wait_for_error(dev); |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 110 | if (ret) |
| 111 | return ret; |
| 112 | |
| 113 | ret = mutex_lock_interruptible(&dev->struct_mutex); |
| 114 | if (ret) |
| 115 | return ret; |
| 116 | |
Chris Wilson | 23bc598 | 2010-09-29 16:10:57 +0100 | [diff] [blame] | 117 | WARN_ON(i915_verify_lists(dev)); |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 118 | return 0; |
| 119 | } |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 120 | |
Chris Wilson | 7d1c480 | 2010-08-07 21:45:03 +0100 | [diff] [blame] | 121 | static inline bool |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 122 | i915_gem_object_is_inactive(struct drm_i915_gem_object *obj) |
Chris Wilson | 7d1c480 | 2010-08-07 21:45:03 +0100 | [diff] [blame] | 123 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 124 | return obj->gtt_space && !obj->active && obj->pin_count == 0; |
Chris Wilson | 7d1c480 | 2010-08-07 21:45:03 +0100 | [diff] [blame] | 125 | } |
| 126 | |
Chris Wilson | 2021746 | 2010-11-23 15:26:33 +0000 | [diff] [blame] | 127 | void i915_gem_do_init(struct drm_device *dev, |
| 128 | unsigned long start, |
| 129 | unsigned long mappable_end, |
| 130 | unsigned long end) |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 131 | { |
| 132 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 133 | |
Chris Wilson | bee4a18 | 2011-01-21 10:54:32 +0000 | [diff] [blame] | 134 | drm_mm_init(&dev_priv->mm.gtt_space, start, end - start); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 135 | |
Chris Wilson | bee4a18 | 2011-01-21 10:54:32 +0000 | [diff] [blame] | 136 | dev_priv->mm.gtt_start = start; |
| 137 | dev_priv->mm.gtt_mappable_end = mappable_end; |
| 138 | dev_priv->mm.gtt_end = end; |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 139 | dev_priv->mm.gtt_total = end - start; |
Daniel Vetter | fb7d516 | 2010-10-01 22:05:20 +0200 | [diff] [blame] | 140 | dev_priv->mm.mappable_gtt_total = min(end, mappable_end) - start; |
Chris Wilson | bee4a18 | 2011-01-21 10:54:32 +0000 | [diff] [blame] | 141 | |
| 142 | /* Take over this portion of the GTT */ |
| 143 | intel_gtt_clear_range(start / PAGE_SIZE, (end-start) / PAGE_SIZE); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 144 | } |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 145 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 146 | int |
| 147 | i915_gem_init_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 148 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 149 | { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 150 | struct drm_i915_gem_init *args = data; |
Chris Wilson | 2021746 | 2010-11-23 15:26:33 +0000 | [diff] [blame] | 151 | |
| 152 | if (args->gtt_start >= args->gtt_end || |
| 153 | (args->gtt_end | args->gtt_start) & (PAGE_SIZE - 1)) |
| 154 | return -EINVAL; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 155 | |
| 156 | mutex_lock(&dev->struct_mutex); |
Chris Wilson | 2021746 | 2010-11-23 15:26:33 +0000 | [diff] [blame] | 157 | i915_gem_do_init(dev, args->gtt_start, args->gtt_end, args->gtt_end); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 158 | mutex_unlock(&dev->struct_mutex); |
| 159 | |
Chris Wilson | 2021746 | 2010-11-23 15:26:33 +0000 | [diff] [blame] | 160 | return 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 161 | } |
| 162 | |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 163 | int |
| 164 | i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 165 | struct drm_file *file) |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 166 | { |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 167 | struct drm_i915_private *dev_priv = dev->dev_private; |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 168 | struct drm_i915_gem_get_aperture *args = data; |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 169 | struct drm_i915_gem_object *obj; |
| 170 | size_t pinned; |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 171 | |
| 172 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 173 | return -ENODEV; |
| 174 | |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 175 | pinned = 0; |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 176 | mutex_lock(&dev->struct_mutex); |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 177 | list_for_each_entry(obj, &dev_priv->mm.pinned_list, mm_list) |
| 178 | pinned += obj->gtt_space->size; |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 179 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 180 | |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 181 | args->aper_size = dev_priv->mm.gtt_total; |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 182 | args->aper_available_size = args->aper_size - pinned; |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 183 | |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 184 | return 0; |
| 185 | } |
| 186 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 187 | static int |
| 188 | i915_gem_create(struct drm_file *file, |
| 189 | struct drm_device *dev, |
| 190 | uint64_t size, |
| 191 | uint32_t *handle_p) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 192 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 193 | struct drm_i915_gem_object *obj; |
Pekka Paalanen | a1a2d1d | 2009-08-23 12:40:55 +0300 | [diff] [blame] | 194 | int ret; |
| 195 | u32 handle; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 196 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 197 | size = roundup(size, PAGE_SIZE); |
Chris Wilson | 8ffc024 | 2011-09-14 14:14:28 +0200 | [diff] [blame] | 198 | if (size == 0) |
| 199 | return -EINVAL; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 200 | |
| 201 | /* Allocate the new object */ |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 202 | obj = i915_gem_alloc_object(dev, size); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 203 | if (obj == NULL) |
| 204 | return -ENOMEM; |
| 205 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 206 | ret = drm_gem_handle_create(file, &obj->base, &handle); |
Chris Wilson | 1dfd975 | 2010-09-06 14:44:14 +0100 | [diff] [blame] | 207 | if (ret) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 208 | drm_gem_object_release(&obj->base); |
| 209 | i915_gem_info_remove_obj(dev->dev_private, obj->base.size); |
Chris Wilson | 202f2fe | 2010-10-14 13:20:40 +0100 | [diff] [blame] | 210 | kfree(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 211 | return ret; |
Chris Wilson | 1dfd975 | 2010-09-06 14:44:14 +0100 | [diff] [blame] | 212 | } |
| 213 | |
Chris Wilson | 202f2fe | 2010-10-14 13:20:40 +0100 | [diff] [blame] | 214 | /* drop reference from allocate - handle holds it now */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 215 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 202f2fe | 2010-10-14 13:20:40 +0100 | [diff] [blame] | 216 | trace_i915_gem_object_create(obj); |
| 217 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 218 | *handle_p = handle; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 219 | return 0; |
| 220 | } |
| 221 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 222 | int |
| 223 | i915_gem_dumb_create(struct drm_file *file, |
| 224 | struct drm_device *dev, |
| 225 | struct drm_mode_create_dumb *args) |
| 226 | { |
| 227 | /* have to work out size/pitch and return them */ |
Chris Wilson | ed0291f | 2011-03-19 08:21:45 +0000 | [diff] [blame] | 228 | args->pitch = ALIGN(args->width * ((args->bpp + 7) / 8), 64); |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 229 | args->size = args->pitch * args->height; |
| 230 | return i915_gem_create(file, dev, |
| 231 | args->size, &args->handle); |
| 232 | } |
| 233 | |
| 234 | int i915_gem_dumb_destroy(struct drm_file *file, |
| 235 | struct drm_device *dev, |
| 236 | uint32_t handle) |
| 237 | { |
| 238 | return drm_gem_handle_delete(file, handle); |
| 239 | } |
| 240 | |
| 241 | /** |
| 242 | * Creates a new mm object and returns a handle to it. |
| 243 | */ |
| 244 | int |
| 245 | i915_gem_create_ioctl(struct drm_device *dev, void *data, |
| 246 | struct drm_file *file) |
| 247 | { |
| 248 | struct drm_i915_gem_create *args = data; |
| 249 | return i915_gem_create(file, dev, |
| 250 | args->size, &args->handle); |
| 251 | } |
| 252 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 253 | 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] | 254 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 255 | drm_i915_private_t *dev_priv = obj->base.dev->dev_private; |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 256 | |
| 257 | 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] | 258 | obj->tiling_mode != I915_TILING_NONE; |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 259 | } |
| 260 | |
Chris Wilson | 99a03df | 2010-05-27 14:15:34 +0100 | [diff] [blame] | 261 | static inline void |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 262 | slow_shmem_copy(struct page *dst_page, |
| 263 | int dst_offset, |
| 264 | struct page *src_page, |
| 265 | int src_offset, |
| 266 | int length) |
| 267 | { |
| 268 | char *dst_vaddr, *src_vaddr; |
| 269 | |
Chris Wilson | 99a03df | 2010-05-27 14:15:34 +0100 | [diff] [blame] | 270 | dst_vaddr = kmap(dst_page); |
| 271 | src_vaddr = kmap(src_page); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 272 | |
| 273 | memcpy(dst_vaddr + dst_offset, src_vaddr + src_offset, length); |
| 274 | |
Chris Wilson | 99a03df | 2010-05-27 14:15:34 +0100 | [diff] [blame] | 275 | kunmap(src_page); |
| 276 | kunmap(dst_page); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 277 | } |
| 278 | |
Chris Wilson | 99a03df | 2010-05-27 14:15:34 +0100 | [diff] [blame] | 279 | static inline void |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 280 | slow_shmem_bit17_copy(struct page *gpu_page, |
| 281 | int gpu_offset, |
| 282 | struct page *cpu_page, |
| 283 | int cpu_offset, |
| 284 | int length, |
| 285 | int is_read) |
| 286 | { |
| 287 | char *gpu_vaddr, *cpu_vaddr; |
| 288 | |
| 289 | /* Use the unswizzled path if this page isn't affected. */ |
| 290 | if ((page_to_phys(gpu_page) & (1 << 17)) == 0) { |
| 291 | if (is_read) |
| 292 | return slow_shmem_copy(cpu_page, cpu_offset, |
| 293 | gpu_page, gpu_offset, length); |
| 294 | else |
| 295 | return slow_shmem_copy(gpu_page, gpu_offset, |
| 296 | cpu_page, cpu_offset, length); |
| 297 | } |
| 298 | |
Chris Wilson | 99a03df | 2010-05-27 14:15:34 +0100 | [diff] [blame] | 299 | gpu_vaddr = kmap(gpu_page); |
| 300 | cpu_vaddr = kmap(cpu_page); |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 301 | |
| 302 | /* Copy the data, XORing A6 with A17 (1). The user already knows he's |
| 303 | * XORing with the other bits (A9 for Y, A9 and A10 for X) |
| 304 | */ |
| 305 | while (length > 0) { |
| 306 | int cacheline_end = ALIGN(gpu_offset + 1, 64); |
| 307 | int this_length = min(cacheline_end - gpu_offset, length); |
| 308 | int swizzled_gpu_offset = gpu_offset ^ 64; |
| 309 | |
| 310 | if (is_read) { |
| 311 | memcpy(cpu_vaddr + cpu_offset, |
| 312 | gpu_vaddr + swizzled_gpu_offset, |
| 313 | this_length); |
| 314 | } else { |
| 315 | memcpy(gpu_vaddr + swizzled_gpu_offset, |
| 316 | cpu_vaddr + cpu_offset, |
| 317 | this_length); |
| 318 | } |
| 319 | cpu_offset += this_length; |
| 320 | gpu_offset += this_length; |
| 321 | length -= this_length; |
| 322 | } |
| 323 | |
Chris Wilson | 99a03df | 2010-05-27 14:15:34 +0100 | [diff] [blame] | 324 | kunmap(cpu_page); |
| 325 | kunmap(gpu_page); |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 326 | } |
| 327 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 328 | /** |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 329 | * This is the fast shmem pread path, which attempts to copy_from_user directly |
| 330 | * from the backing pages of the object to the user's address space. On a |
| 331 | * fault, it fails so we can fall back to i915_gem_shmem_pwrite_slow(). |
| 332 | */ |
| 333 | static int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 334 | i915_gem_shmem_pread_fast(struct drm_device *dev, |
| 335 | struct drm_i915_gem_object *obj, |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 336 | struct drm_i915_gem_pread *args, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 337 | struct drm_file *file) |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 338 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 339 | struct address_space *mapping = obj->base.filp->f_path.dentry->d_inode->i_mapping; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 340 | ssize_t remain; |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 341 | loff_t offset; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 342 | char __user *user_data; |
| 343 | int page_offset, page_length; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 344 | |
| 345 | user_data = (char __user *) (uintptr_t) args->data_ptr; |
| 346 | remain = args->size; |
| 347 | |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 348 | offset = args->offset; |
| 349 | |
| 350 | while (remain > 0) { |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 351 | struct page *page; |
| 352 | char *vaddr; |
| 353 | int ret; |
| 354 | |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 355 | /* Operation in this page |
| 356 | * |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 357 | * page_offset = offset within page |
| 358 | * page_length = bytes to copy for this page |
| 359 | */ |
Chris Wilson | c8cbbb8 | 2011-05-12 22:17:11 +0100 | [diff] [blame] | 360 | page_offset = offset_in_page(offset); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 361 | page_length = remain; |
| 362 | if ((page_offset + remain) > PAGE_SIZE) |
| 363 | page_length = PAGE_SIZE - page_offset; |
| 364 | |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 365 | page = shmem_read_mapping_page(mapping, offset >> PAGE_SHIFT); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 366 | if (IS_ERR(page)) |
| 367 | return PTR_ERR(page); |
| 368 | |
| 369 | vaddr = kmap_atomic(page); |
| 370 | ret = __copy_to_user_inatomic(user_data, |
| 371 | vaddr + page_offset, |
| 372 | page_length); |
| 373 | kunmap_atomic(vaddr); |
| 374 | |
| 375 | mark_page_accessed(page); |
| 376 | page_cache_release(page); |
| 377 | if (ret) |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 378 | return -EFAULT; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 379 | |
| 380 | remain -= page_length; |
| 381 | user_data += page_length; |
| 382 | offset += page_length; |
| 383 | } |
| 384 | |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 385 | return 0; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 386 | } |
| 387 | |
| 388 | /** |
| 389 | * This is the fallback shmem pread path, which allocates temporary storage |
| 390 | * in kernel space to copy_to_user into outside of the struct_mutex, so we |
| 391 | * can copy out of the object's backing pages while holding the struct mutex |
| 392 | * and not take page faults. |
| 393 | */ |
| 394 | static int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 395 | i915_gem_shmem_pread_slow(struct drm_device *dev, |
| 396 | struct drm_i915_gem_object *obj, |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 397 | struct drm_i915_gem_pread *args, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 398 | struct drm_file *file) |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 399 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 400 | struct address_space *mapping = obj->base.filp->f_path.dentry->d_inode->i_mapping; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 401 | struct mm_struct *mm = current->mm; |
| 402 | struct page **user_pages; |
| 403 | ssize_t remain; |
| 404 | loff_t offset, pinned_pages, i; |
| 405 | loff_t first_data_page, last_data_page, num_pages; |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 406 | int shmem_page_offset; |
| 407 | int data_page_index, data_page_offset; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 408 | int page_length; |
| 409 | int ret; |
| 410 | uint64_t data_ptr = args->data_ptr; |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 411 | int do_bit17_swizzling; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 412 | |
| 413 | remain = args->size; |
| 414 | |
| 415 | /* Pin the user pages containing the data. We can't fault while |
| 416 | * holding the struct mutex, yet we want to hold it while |
| 417 | * dereferencing the user data. |
| 418 | */ |
| 419 | first_data_page = data_ptr / PAGE_SIZE; |
| 420 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; |
| 421 | num_pages = last_data_page - first_data_page + 1; |
| 422 | |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 423 | user_pages = drm_malloc_ab(num_pages, sizeof(struct page *)); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 424 | if (user_pages == NULL) |
| 425 | return -ENOMEM; |
| 426 | |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 427 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 428 | down_read(&mm->mmap_sem); |
| 429 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, |
Eric Anholt | e5e9ecd | 2009-04-07 16:01:22 -0700 | [diff] [blame] | 430 | num_pages, 1, 0, user_pages, NULL); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 431 | up_read(&mm->mmap_sem); |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 432 | mutex_lock(&dev->struct_mutex); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 433 | if (pinned_pages < num_pages) { |
| 434 | ret = -EFAULT; |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 435 | goto out; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 436 | } |
| 437 | |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 438 | ret = i915_gem_object_set_cpu_read_domain_range(obj, |
| 439 | args->offset, |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 440 | args->size); |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 441 | if (ret) |
| 442 | goto out; |
| 443 | |
| 444 | do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 445 | |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 446 | offset = args->offset; |
| 447 | |
| 448 | while (remain > 0) { |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 449 | struct page *page; |
| 450 | |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 451 | /* Operation in this page |
| 452 | * |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 453 | * shmem_page_offset = offset within page in shmem file |
| 454 | * data_page_index = page number in get_user_pages return |
| 455 | * data_page_offset = offset with data_page_index page. |
| 456 | * page_length = bytes to copy for this page |
| 457 | */ |
Chris Wilson | c8cbbb8 | 2011-05-12 22:17:11 +0100 | [diff] [blame] | 458 | shmem_page_offset = offset_in_page(offset); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 459 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; |
Chris Wilson | c8cbbb8 | 2011-05-12 22:17:11 +0100 | [diff] [blame] | 460 | data_page_offset = offset_in_page(data_ptr); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 461 | |
| 462 | page_length = remain; |
| 463 | if ((shmem_page_offset + page_length) > PAGE_SIZE) |
| 464 | page_length = PAGE_SIZE - shmem_page_offset; |
| 465 | if ((data_page_offset + page_length) > PAGE_SIZE) |
| 466 | page_length = PAGE_SIZE - data_page_offset; |
| 467 | |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 468 | page = shmem_read_mapping_page(mapping, offset >> PAGE_SHIFT); |
Jesper Juhl | b65552f | 2011-06-12 20:53:44 +0000 | [diff] [blame] | 469 | if (IS_ERR(page)) { |
| 470 | ret = PTR_ERR(page); |
| 471 | goto out; |
| 472 | } |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 473 | |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 474 | if (do_bit17_swizzling) { |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 475 | slow_shmem_bit17_copy(page, |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 476 | shmem_page_offset, |
Chris Wilson | 99a03df | 2010-05-27 14:15:34 +0100 | [diff] [blame] | 477 | user_pages[data_page_index], |
| 478 | data_page_offset, |
| 479 | page_length, |
| 480 | 1); |
| 481 | } else { |
| 482 | slow_shmem_copy(user_pages[data_page_index], |
| 483 | data_page_offset, |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 484 | page, |
Chris Wilson | 99a03df | 2010-05-27 14:15:34 +0100 | [diff] [blame] | 485 | shmem_page_offset, |
| 486 | page_length); |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 487 | } |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 488 | |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 489 | mark_page_accessed(page); |
| 490 | page_cache_release(page); |
| 491 | |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 492 | remain -= page_length; |
| 493 | data_ptr += page_length; |
| 494 | offset += page_length; |
| 495 | } |
| 496 | |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 497 | out: |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 498 | for (i = 0; i < pinned_pages; i++) { |
| 499 | SetPageDirty(user_pages[i]); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 500 | mark_page_accessed(user_pages[i]); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 501 | page_cache_release(user_pages[i]); |
| 502 | } |
Jesse Barnes | 8e7d2b2 | 2009-05-08 16:13:25 -0700 | [diff] [blame] | 503 | drm_free_large(user_pages); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 504 | |
| 505 | return ret; |
| 506 | } |
| 507 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 508 | /** |
| 509 | * Reads data from the object referenced by handle. |
| 510 | * |
| 511 | * On error, the contents of *data are undefined. |
| 512 | */ |
| 513 | int |
| 514 | i915_gem_pread_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 515 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 516 | { |
| 517 | struct drm_i915_gem_pread *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 518 | struct drm_i915_gem_object *obj; |
Chris Wilson | 35b62a8 | 2010-09-26 20:23:38 +0100 | [diff] [blame] | 519 | int ret = 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 520 | |
Chris Wilson | 51311d0 | 2010-11-17 09:10:42 +0000 | [diff] [blame] | 521 | if (args->size == 0) |
| 522 | return 0; |
| 523 | |
| 524 | if (!access_ok(VERIFY_WRITE, |
| 525 | (char __user *)(uintptr_t)args->data_ptr, |
| 526 | args->size)) |
| 527 | return -EFAULT; |
| 528 | |
| 529 | ret = fault_in_pages_writeable((char __user *)(uintptr_t)args->data_ptr, |
| 530 | args->size); |
| 531 | if (ret) |
| 532 | return -EFAULT; |
| 533 | |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 534 | ret = i915_mutex_lock_interruptible(dev); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 535 | if (ret) |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 536 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 537 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 538 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 539 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 540 | ret = -ENOENT; |
| 541 | goto unlock; |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 542 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 543 | |
Chris Wilson | 7dcd249 | 2010-09-26 20:21:44 +0100 | [diff] [blame] | 544 | /* Bounds check source. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 545 | if (args->offset > obj->base.size || |
| 546 | args->size > obj->base.size - args->offset) { |
Chris Wilson | ce9d419 | 2010-09-26 20:50:05 +0100 | [diff] [blame] | 547 | ret = -EINVAL; |
Chris Wilson | 35b62a8 | 2010-09-26 20:23:38 +0100 | [diff] [blame] | 548 | goto out; |
Chris Wilson | ce9d419 | 2010-09-26 20:50:05 +0100 | [diff] [blame] | 549 | } |
| 550 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 551 | trace_i915_gem_object_pread(obj, args->offset, args->size); |
| 552 | |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 553 | ret = i915_gem_object_set_cpu_read_domain_range(obj, |
| 554 | args->offset, |
| 555 | args->size); |
| 556 | if (ret) |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 557 | goto out; |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 558 | |
| 559 | ret = -EFAULT; |
| 560 | if (!i915_gem_object_needs_bit17_swizzle(obj)) |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 561 | ret = i915_gem_shmem_pread_fast(dev, obj, args, file); |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 562 | if (ret == -EFAULT) |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 563 | ret = i915_gem_shmem_pread_slow(dev, obj, args, file); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 564 | |
Chris Wilson | 35b62a8 | 2010-09-26 20:23:38 +0100 | [diff] [blame] | 565 | out: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 566 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 567 | unlock: |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 568 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 569 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 570 | } |
| 571 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 572 | /* This is the fast write path which cannot handle |
| 573 | * page faults in the source data |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame] | 574 | */ |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame] | 575 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 576 | static inline int |
| 577 | fast_user_write(struct io_mapping *mapping, |
| 578 | loff_t page_base, int page_offset, |
| 579 | char __user *user_data, |
| 580 | int length) |
| 581 | { |
| 582 | char *vaddr_atomic; |
| 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); |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 586 | unwritten = __copy_from_user_inatomic_nocache(vaddr_atomic + page_offset, |
| 587 | user_data, length); |
Peter Zijlstra | 3e4d3af | 2010-10-26 14:21:51 -0700 | [diff] [blame] | 588 | io_mapping_unmap_atomic(vaddr_atomic); |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 589 | return unwritten; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 590 | } |
| 591 | |
| 592 | /* Here's the write path which can sleep for |
| 593 | * page faults |
| 594 | */ |
| 595 | |
Chris Wilson | ab34c22 | 2010-05-27 14:15:35 +0100 | [diff] [blame] | 596 | static inline void |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 597 | slow_kernel_write(struct io_mapping *mapping, |
| 598 | loff_t gtt_base, int gtt_offset, |
| 599 | struct page *user_page, int user_offset, |
| 600 | int length) |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 601 | { |
Chris Wilson | ab34c22 | 2010-05-27 14:15:35 +0100 | [diff] [blame] | 602 | char __iomem *dst_vaddr; |
| 603 | char *src_vaddr; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 604 | |
Chris Wilson | ab34c22 | 2010-05-27 14:15:35 +0100 | [diff] [blame] | 605 | dst_vaddr = io_mapping_map_wc(mapping, gtt_base); |
| 606 | src_vaddr = kmap(user_page); |
| 607 | |
| 608 | memcpy_toio(dst_vaddr + gtt_offset, |
| 609 | src_vaddr + user_offset, |
| 610 | length); |
| 611 | |
| 612 | kunmap(user_page); |
| 613 | io_mapping_unmap(dst_vaddr); |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame] | 614 | } |
| 615 | |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 616 | /** |
| 617 | * This is the fast pwrite path, where we copy the data directly from the |
| 618 | * user into the GTT, uncached. |
| 619 | */ |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 620 | static int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 621 | i915_gem_gtt_pwrite_fast(struct drm_device *dev, |
| 622 | struct drm_i915_gem_object *obj, |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 623 | struct drm_i915_gem_pwrite *args, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 624 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 625 | { |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 626 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 627 | ssize_t remain; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 628 | loff_t offset, page_base; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 629 | char __user *user_data; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 630 | int page_offset, page_length; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 631 | |
| 632 | user_data = (char __user *) (uintptr_t) args->data_ptr; |
| 633 | remain = args->size; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 634 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 635 | offset = obj->gtt_offset + args->offset; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 636 | |
| 637 | while (remain > 0) { |
| 638 | /* Operation in this page |
| 639 | * |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 640 | * page_base = page offset within aperture |
| 641 | * page_offset = offset within page |
| 642 | * page_length = bytes to copy for this page |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 643 | */ |
Chris Wilson | c8cbbb8 | 2011-05-12 22:17:11 +0100 | [diff] [blame] | 644 | page_base = offset & PAGE_MASK; |
| 645 | page_offset = offset_in_page(offset); |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 646 | page_length = remain; |
| 647 | if ((page_offset + remain) > PAGE_SIZE) |
| 648 | page_length = PAGE_SIZE - page_offset; |
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 | /* If we get a fault while copying data, then (presumably) our |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 651 | * source page isn't available. Return the error and we'll |
| 652 | * retry in the slow path. |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 653 | */ |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 654 | if (fast_user_write(dev_priv->mm.gtt_mapping, page_base, |
| 655 | page_offset, user_data, page_length)) |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 656 | return -EFAULT; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 657 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 658 | remain -= page_length; |
| 659 | user_data += page_length; |
| 660 | offset += page_length; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 661 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 662 | |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 663 | return 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 664 | } |
| 665 | |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 666 | /** |
| 667 | * This is the fallback GTT pwrite path, which uses get_user_pages to pin |
| 668 | * the memory and maps it using kmap_atomic for copying. |
| 669 | * |
| 670 | * This code resulted in x11perf -rgb10text consuming about 10% more CPU |
| 671 | * than using i915_gem_gtt_pwrite_fast on a G45 (32-bit). |
| 672 | */ |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 673 | static int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 674 | i915_gem_gtt_pwrite_slow(struct drm_device *dev, |
| 675 | struct drm_i915_gem_object *obj, |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 676 | struct drm_i915_gem_pwrite *args, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 677 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 678 | { |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 679 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 680 | ssize_t remain; |
| 681 | loff_t gtt_page_base, offset; |
| 682 | loff_t first_data_page, last_data_page, num_pages; |
| 683 | loff_t pinned_pages, i; |
| 684 | struct page **user_pages; |
| 685 | struct mm_struct *mm = current->mm; |
| 686 | int gtt_page_offset, data_page_offset, data_page_index, page_length; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 687 | int ret; |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 688 | uint64_t data_ptr = args->data_ptr; |
| 689 | |
| 690 | remain = args->size; |
| 691 | |
| 692 | /* Pin the user pages containing the data. We can't fault while |
| 693 | * holding the struct mutex, and all of the pwrite implementations |
| 694 | * want to hold it while dereferencing the user data. |
| 695 | */ |
| 696 | first_data_page = data_ptr / PAGE_SIZE; |
| 697 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; |
| 698 | num_pages = last_data_page - first_data_page + 1; |
| 699 | |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 700 | user_pages = drm_malloc_ab(num_pages, sizeof(struct page *)); |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 701 | if (user_pages == NULL) |
| 702 | return -ENOMEM; |
| 703 | |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 704 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 705 | down_read(&mm->mmap_sem); |
| 706 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, |
| 707 | num_pages, 0, 0, user_pages, NULL); |
| 708 | up_read(&mm->mmap_sem); |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 709 | mutex_lock(&dev->struct_mutex); |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 710 | if (pinned_pages < num_pages) { |
| 711 | ret = -EFAULT; |
| 712 | goto out_unpin_pages; |
| 713 | } |
| 714 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 715 | ret = i915_gem_object_set_to_gtt_domain(obj, true); |
| 716 | if (ret) |
| 717 | goto out_unpin_pages; |
| 718 | |
| 719 | ret = i915_gem_object_put_fence(obj); |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 720 | if (ret) |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 721 | goto out_unpin_pages; |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 722 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 723 | offset = obj->gtt_offset + args->offset; |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 724 | |
| 725 | while (remain > 0) { |
| 726 | /* Operation in this page |
| 727 | * |
| 728 | * gtt_page_base = page offset within aperture |
| 729 | * gtt_page_offset = offset within page in aperture |
| 730 | * data_page_index = page number in get_user_pages return |
| 731 | * data_page_offset = offset with data_page_index page. |
| 732 | * page_length = bytes to copy for this page |
| 733 | */ |
| 734 | gtt_page_base = offset & PAGE_MASK; |
Chris Wilson | c8cbbb8 | 2011-05-12 22:17:11 +0100 | [diff] [blame] | 735 | gtt_page_offset = offset_in_page(offset); |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 736 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; |
Chris Wilson | c8cbbb8 | 2011-05-12 22:17:11 +0100 | [diff] [blame] | 737 | data_page_offset = offset_in_page(data_ptr); |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 738 | |
| 739 | page_length = remain; |
| 740 | if ((gtt_page_offset + page_length) > PAGE_SIZE) |
| 741 | page_length = PAGE_SIZE - gtt_page_offset; |
| 742 | if ((data_page_offset + page_length) > PAGE_SIZE) |
| 743 | page_length = PAGE_SIZE - data_page_offset; |
| 744 | |
Chris Wilson | ab34c22 | 2010-05-27 14:15:35 +0100 | [diff] [blame] | 745 | slow_kernel_write(dev_priv->mm.gtt_mapping, |
| 746 | gtt_page_base, gtt_page_offset, |
| 747 | user_pages[data_page_index], |
| 748 | data_page_offset, |
| 749 | page_length); |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 750 | |
| 751 | remain -= page_length; |
| 752 | offset += page_length; |
| 753 | data_ptr += page_length; |
| 754 | } |
| 755 | |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 756 | out_unpin_pages: |
| 757 | for (i = 0; i < pinned_pages; i++) |
| 758 | page_cache_release(user_pages[i]); |
Jesse Barnes | 8e7d2b2 | 2009-05-08 16:13:25 -0700 | [diff] [blame] | 759 | drm_free_large(user_pages); |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 760 | |
| 761 | return ret; |
| 762 | } |
| 763 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 764 | /** |
| 765 | * This is the fast shmem pwrite path, which attempts to directly |
| 766 | * copy_from_user into the kmapped pages backing the object. |
| 767 | */ |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 768 | static int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 769 | i915_gem_shmem_pwrite_fast(struct drm_device *dev, |
| 770 | struct drm_i915_gem_object *obj, |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 771 | struct drm_i915_gem_pwrite *args, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 772 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 773 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 774 | struct address_space *mapping = obj->base.filp->f_path.dentry->d_inode->i_mapping; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 775 | ssize_t remain; |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 776 | loff_t offset; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 777 | char __user *user_data; |
| 778 | int page_offset, page_length; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 779 | |
| 780 | user_data = (char __user *) (uintptr_t) args->data_ptr; |
| 781 | remain = args->size; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 782 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 783 | offset = args->offset; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 784 | obj->dirty = 1; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 785 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 786 | while (remain > 0) { |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 787 | struct page *page; |
| 788 | char *vaddr; |
| 789 | int ret; |
| 790 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 791 | /* Operation in this page |
| 792 | * |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 793 | * page_offset = offset within page |
| 794 | * page_length = bytes to copy for this page |
| 795 | */ |
Chris Wilson | c8cbbb8 | 2011-05-12 22:17:11 +0100 | [diff] [blame] | 796 | page_offset = offset_in_page(offset); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 797 | page_length = remain; |
| 798 | if ((page_offset + remain) > PAGE_SIZE) |
| 799 | page_length = PAGE_SIZE - page_offset; |
| 800 | |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 801 | page = shmem_read_mapping_page(mapping, offset >> PAGE_SHIFT); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 802 | if (IS_ERR(page)) |
| 803 | return PTR_ERR(page); |
| 804 | |
Daniel Vetter | 130c256 | 2011-09-17 20:55:46 +0200 | [diff] [blame] | 805 | vaddr = kmap_atomic(page); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 806 | ret = __copy_from_user_inatomic(vaddr + page_offset, |
| 807 | user_data, |
| 808 | page_length); |
Daniel Vetter | 130c256 | 2011-09-17 20:55:46 +0200 | [diff] [blame] | 809 | kunmap_atomic(vaddr); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 810 | |
| 811 | set_page_dirty(page); |
| 812 | mark_page_accessed(page); |
| 813 | page_cache_release(page); |
| 814 | |
| 815 | /* If we get a fault while copying data, then (presumably) our |
| 816 | * source page isn't available. Return the error and we'll |
| 817 | * retry in the slow path. |
| 818 | */ |
| 819 | if (ret) |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 820 | return -EFAULT; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 821 | |
| 822 | remain -= page_length; |
| 823 | user_data += page_length; |
| 824 | offset += page_length; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 825 | } |
| 826 | |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 827 | return 0; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 828 | } |
| 829 | |
| 830 | /** |
| 831 | * This is the fallback shmem pwrite path, which uses get_user_pages to pin |
| 832 | * the memory and maps it using kmap_atomic for copying. |
| 833 | * |
| 834 | * This avoids taking mmap_sem for faulting on the user's address while the |
| 835 | * struct_mutex is held. |
| 836 | */ |
| 837 | static int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 838 | i915_gem_shmem_pwrite_slow(struct drm_device *dev, |
| 839 | struct drm_i915_gem_object *obj, |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 840 | struct drm_i915_gem_pwrite *args, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 841 | struct drm_file *file) |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 842 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 843 | struct address_space *mapping = obj->base.filp->f_path.dentry->d_inode->i_mapping; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 844 | struct mm_struct *mm = current->mm; |
| 845 | struct page **user_pages; |
| 846 | ssize_t remain; |
| 847 | loff_t offset, pinned_pages, i; |
| 848 | loff_t first_data_page, last_data_page, num_pages; |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 849 | int shmem_page_offset; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 850 | int data_page_index, data_page_offset; |
| 851 | int page_length; |
| 852 | int ret; |
| 853 | uint64_t data_ptr = args->data_ptr; |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 854 | int do_bit17_swizzling; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 855 | |
| 856 | remain = args->size; |
| 857 | |
| 858 | /* Pin the user pages containing the data. We can't fault while |
| 859 | * holding the struct mutex, and all of the pwrite implementations |
| 860 | * want to hold it while dereferencing the user data. |
| 861 | */ |
| 862 | first_data_page = data_ptr / PAGE_SIZE; |
| 863 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; |
| 864 | num_pages = last_data_page - first_data_page + 1; |
| 865 | |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 866 | user_pages = drm_malloc_ab(num_pages, sizeof(struct page *)); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 867 | if (user_pages == NULL) |
| 868 | return -ENOMEM; |
| 869 | |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 870 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 871 | down_read(&mm->mmap_sem); |
| 872 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, |
| 873 | num_pages, 0, 0, user_pages, NULL); |
| 874 | up_read(&mm->mmap_sem); |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 875 | mutex_lock(&dev->struct_mutex); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 876 | if (pinned_pages < num_pages) { |
| 877 | ret = -EFAULT; |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 878 | goto out; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 879 | } |
| 880 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 881 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 882 | if (ret) |
| 883 | goto out; |
| 884 | |
| 885 | do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 886 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 887 | offset = args->offset; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 888 | obj->dirty = 1; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 889 | |
| 890 | while (remain > 0) { |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 891 | struct page *page; |
| 892 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 893 | /* Operation in this page |
| 894 | * |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 895 | * shmem_page_offset = offset within page in shmem file |
| 896 | * data_page_index = page number in get_user_pages return |
| 897 | * data_page_offset = offset with data_page_index page. |
| 898 | * page_length = bytes to copy for this page |
| 899 | */ |
Chris Wilson | c8cbbb8 | 2011-05-12 22:17:11 +0100 | [diff] [blame] | 900 | shmem_page_offset = offset_in_page(offset); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 901 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; |
Chris Wilson | c8cbbb8 | 2011-05-12 22:17:11 +0100 | [diff] [blame] | 902 | data_page_offset = offset_in_page(data_ptr); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 903 | |
| 904 | page_length = remain; |
| 905 | if ((shmem_page_offset + page_length) > PAGE_SIZE) |
| 906 | page_length = PAGE_SIZE - shmem_page_offset; |
| 907 | if ((data_page_offset + page_length) > PAGE_SIZE) |
| 908 | page_length = PAGE_SIZE - data_page_offset; |
| 909 | |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 910 | page = shmem_read_mapping_page(mapping, offset >> PAGE_SHIFT); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 911 | if (IS_ERR(page)) { |
| 912 | ret = PTR_ERR(page); |
| 913 | goto out; |
| 914 | } |
| 915 | |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 916 | if (do_bit17_swizzling) { |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 917 | slow_shmem_bit17_copy(page, |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 918 | shmem_page_offset, |
| 919 | user_pages[data_page_index], |
| 920 | data_page_offset, |
Chris Wilson | 99a03df | 2010-05-27 14:15:34 +0100 | [diff] [blame] | 921 | page_length, |
| 922 | 0); |
| 923 | } else { |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 924 | slow_shmem_copy(page, |
Chris Wilson | 99a03df | 2010-05-27 14:15:34 +0100 | [diff] [blame] | 925 | shmem_page_offset, |
| 926 | user_pages[data_page_index], |
| 927 | data_page_offset, |
| 928 | page_length); |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 929 | } |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 930 | |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 931 | set_page_dirty(page); |
| 932 | mark_page_accessed(page); |
| 933 | page_cache_release(page); |
| 934 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 935 | remain -= page_length; |
| 936 | data_ptr += page_length; |
| 937 | offset += page_length; |
| 938 | } |
| 939 | |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 940 | out: |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 941 | for (i = 0; i < pinned_pages; i++) |
| 942 | page_cache_release(user_pages[i]); |
Jesse Barnes | 8e7d2b2 | 2009-05-08 16:13:25 -0700 | [diff] [blame] | 943 | drm_free_large(user_pages); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 944 | |
| 945 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 946 | } |
| 947 | |
| 948 | /** |
| 949 | * Writes data to the object referenced by handle. |
| 950 | * |
| 951 | * On error, the contents of the buffer that were to be modified are undefined. |
| 952 | */ |
| 953 | int |
| 954 | i915_gem_pwrite_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 955 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 956 | { |
| 957 | struct drm_i915_gem_pwrite *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 958 | struct drm_i915_gem_object *obj; |
Chris Wilson | 51311d0 | 2010-11-17 09:10:42 +0000 | [diff] [blame] | 959 | int ret; |
| 960 | |
| 961 | if (args->size == 0) |
| 962 | return 0; |
| 963 | |
| 964 | if (!access_ok(VERIFY_READ, |
| 965 | (char __user *)(uintptr_t)args->data_ptr, |
| 966 | args->size)) |
| 967 | return -EFAULT; |
| 968 | |
| 969 | ret = fault_in_pages_readable((char __user *)(uintptr_t)args->data_ptr, |
| 970 | args->size); |
| 971 | if (ret) |
| 972 | return -EFAULT; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 973 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 974 | ret = i915_mutex_lock_interruptible(dev); |
| 975 | if (ret) |
| 976 | return ret; |
| 977 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 978 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 979 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 980 | ret = -ENOENT; |
| 981 | goto unlock; |
| 982 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 983 | |
Chris Wilson | 7dcd249 | 2010-09-26 20:21:44 +0100 | [diff] [blame] | 984 | /* Bounds check destination. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 985 | if (args->offset > obj->base.size || |
| 986 | args->size > obj->base.size - args->offset) { |
Chris Wilson | ce9d419 | 2010-09-26 20:50:05 +0100 | [diff] [blame] | 987 | ret = -EINVAL; |
Chris Wilson | 35b62a8 | 2010-09-26 20:23:38 +0100 | [diff] [blame] | 988 | goto out; |
Chris Wilson | ce9d419 | 2010-09-26 20:50:05 +0100 | [diff] [blame] | 989 | } |
| 990 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 991 | trace_i915_gem_object_pwrite(obj, args->offset, args->size); |
| 992 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 993 | /* We can only do the GTT pwrite on untiled buffers, as otherwise |
| 994 | * it would end up going through the fenced access, and we'll get |
| 995 | * different detiling behavior between reading and writing. |
| 996 | * pread/pwrite currently are reading and writing from the CPU |
| 997 | * perspective, requiring manual detiling by the client. |
| 998 | */ |
Daniel Vetter | 5c0480f | 2011-12-14 13:57:30 +0100 | [diff] [blame^] | 999 | if (obj->phys_obj) { |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 1000 | ret = i915_gem_phys_pwrite(dev, obj, args, file); |
Daniel Vetter | 5c0480f | 2011-12-14 13:57:30 +0100 | [diff] [blame^] | 1001 | goto out; |
| 1002 | } |
| 1003 | |
| 1004 | if (obj->gtt_space && |
| 1005 | obj->base.write_domain != I915_GEM_DOMAIN_CPU) { |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 1006 | ret = i915_gem_object_pin(obj, 0, true); |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 1007 | if (ret) |
| 1008 | goto out; |
| 1009 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 1010 | ret = i915_gem_object_set_to_gtt_domain(obj, true); |
| 1011 | if (ret) |
| 1012 | goto out_unpin; |
| 1013 | |
| 1014 | ret = i915_gem_object_put_fence(obj); |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 1015 | if (ret) |
| 1016 | goto out_unpin; |
| 1017 | |
| 1018 | ret = i915_gem_gtt_pwrite_fast(dev, obj, args, file); |
| 1019 | if (ret == -EFAULT) |
| 1020 | ret = i915_gem_gtt_pwrite_slow(dev, obj, args, file); |
| 1021 | |
| 1022 | out_unpin: |
| 1023 | i915_gem_object_unpin(obj); |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 1024 | |
Daniel Vetter | 5c0480f | 2011-12-14 13:57:30 +0100 | [diff] [blame^] | 1025 | if (ret != -EFAULT) |
| 1026 | goto out; |
| 1027 | /* Fall through to the shmfs paths because the gtt paths might |
| 1028 | * fail with non-page-backed user pointers (e.g. gtt mappings |
| 1029 | * when moving data between textures). */ |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 1030 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1031 | |
Daniel Vetter | 5c0480f | 2011-12-14 13:57:30 +0100 | [diff] [blame^] | 1032 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
| 1033 | if (ret) |
| 1034 | goto out; |
| 1035 | |
| 1036 | ret = -EFAULT; |
| 1037 | if (!i915_gem_object_needs_bit17_swizzle(obj)) |
| 1038 | ret = i915_gem_shmem_pwrite_fast(dev, obj, args, file); |
| 1039 | if (ret == -EFAULT) |
| 1040 | ret = i915_gem_shmem_pwrite_slow(dev, obj, args, file); |
| 1041 | |
Chris Wilson | 35b62a8 | 2010-09-26 20:23:38 +0100 | [diff] [blame] | 1042 | out: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1043 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1044 | unlock: |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 1045 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1046 | return ret; |
| 1047 | } |
| 1048 | |
| 1049 | /** |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1050 | * Called when user space prepares to use an object with the CPU, either |
| 1051 | * through the mmap ioctl's mapping or a GTT mapping. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1052 | */ |
| 1053 | int |
| 1054 | i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1055 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1056 | { |
| 1057 | struct drm_i915_gem_set_domain *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1058 | struct drm_i915_gem_object *obj; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1059 | uint32_t read_domains = args->read_domains; |
| 1060 | uint32_t write_domain = args->write_domain; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1061 | int ret; |
| 1062 | |
| 1063 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 1064 | return -ENODEV; |
| 1065 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1066 | /* Only handle setting domains to types used by the CPU. */ |
Chris Wilson | 21d509e | 2009-06-06 09:46:02 +0100 | [diff] [blame] | 1067 | if (write_domain & I915_GEM_GPU_DOMAINS) |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1068 | return -EINVAL; |
| 1069 | |
Chris Wilson | 21d509e | 2009-06-06 09:46:02 +0100 | [diff] [blame] | 1070 | if (read_domains & I915_GEM_GPU_DOMAINS) |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1071 | return -EINVAL; |
| 1072 | |
| 1073 | /* Having something in the write domain implies it's in the read |
| 1074 | * domain, and only that read domain. Enforce that in the request. |
| 1075 | */ |
| 1076 | if (write_domain != 0 && read_domains != write_domain) |
| 1077 | return -EINVAL; |
| 1078 | |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1079 | ret = i915_mutex_lock_interruptible(dev); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1080 | if (ret) |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1081 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1082 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1083 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 1084 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1085 | ret = -ENOENT; |
| 1086 | goto unlock; |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1087 | } |
Jesse Barnes | 652c393 | 2009-08-17 13:31:43 -0700 | [diff] [blame] | 1088 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1089 | if (read_domains & I915_GEM_DOMAIN_GTT) { |
| 1090 | ret = i915_gem_object_set_to_gtt_domain(obj, write_domain != 0); |
Eric Anholt | 0235439 | 2008-11-26 13:58:13 -0800 | [diff] [blame] | 1091 | |
| 1092 | /* Silently promote "you're not bound, there was nothing to do" |
| 1093 | * to success, since the client was just asking us to |
| 1094 | * make sure everything was done. |
| 1095 | */ |
| 1096 | if (ret == -EINVAL) |
| 1097 | ret = 0; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1098 | } else { |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1099 | ret = i915_gem_object_set_to_cpu_domain(obj, write_domain != 0); |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1100 | } |
| 1101 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1102 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1103 | unlock: |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1104 | mutex_unlock(&dev->struct_mutex); |
| 1105 | return ret; |
| 1106 | } |
| 1107 | |
| 1108 | /** |
| 1109 | * Called when user space has done writes to this buffer |
| 1110 | */ |
| 1111 | int |
| 1112 | i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1113 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1114 | { |
| 1115 | struct drm_i915_gem_sw_finish *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1116 | struct drm_i915_gem_object *obj; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1117 | int ret = 0; |
| 1118 | |
| 1119 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 1120 | return -ENODEV; |
| 1121 | |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1122 | ret = i915_mutex_lock_interruptible(dev); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1123 | if (ret) |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1124 | return ret; |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1125 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1126 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 1127 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1128 | ret = -ENOENT; |
| 1129 | goto unlock; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1130 | } |
| 1131 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1132 | /* Pinned buffers may be scanout, so flush the cache */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1133 | if (obj->pin_count) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1134 | i915_gem_object_flush_cpu_write_domain(obj); |
| 1135 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1136 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1137 | unlock: |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1138 | mutex_unlock(&dev->struct_mutex); |
| 1139 | return ret; |
| 1140 | } |
| 1141 | |
| 1142 | /** |
| 1143 | * Maps the contents of an object, returning the address it is mapped |
| 1144 | * into. |
| 1145 | * |
| 1146 | * While the mapping holds a reference on the contents of the object, it doesn't |
| 1147 | * imply a ref on the object itself. |
| 1148 | */ |
| 1149 | int |
| 1150 | i915_gem_mmap_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1151 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1152 | { |
| 1153 | struct drm_i915_gem_mmap *args = data; |
| 1154 | struct drm_gem_object *obj; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1155 | unsigned long addr; |
| 1156 | |
| 1157 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 1158 | return -ENODEV; |
| 1159 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1160 | obj = drm_gem_object_lookup(dev, file, args->handle); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1161 | if (obj == NULL) |
Chris Wilson | bf79cb9 | 2010-08-04 14:19:46 +0100 | [diff] [blame] | 1162 | return -ENOENT; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1163 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1164 | down_write(¤t->mm->mmap_sem); |
| 1165 | addr = do_mmap(obj->filp, 0, args->size, |
| 1166 | PROT_READ | PROT_WRITE, MAP_SHARED, |
| 1167 | args->offset); |
| 1168 | up_write(¤t->mm->mmap_sem); |
Luca Barbieri | bc9025b | 2010-02-09 05:49:12 +0000 | [diff] [blame] | 1169 | drm_gem_object_unreference_unlocked(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1170 | if (IS_ERR((void *)addr)) |
| 1171 | return addr; |
| 1172 | |
| 1173 | args->addr_ptr = (uint64_t) addr; |
| 1174 | |
| 1175 | return 0; |
| 1176 | } |
| 1177 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1178 | /** |
| 1179 | * i915_gem_fault - fault a page into the GTT |
| 1180 | * vma: VMA in question |
| 1181 | * vmf: fault info |
| 1182 | * |
| 1183 | * The fault handler is set up by drm_gem_mmap() when a object is GTT mapped |
| 1184 | * from userspace. The fault handler takes care of binding the object to |
| 1185 | * the GTT (if needed), allocating and programming a fence register (again, |
| 1186 | * only if needed based on whether the old reg is still valid or the object |
| 1187 | * is tiled) and inserting a new PTE into the faulting process. |
| 1188 | * |
| 1189 | * Note that the faulting process may involve evicting existing objects |
| 1190 | * from the GTT and/or fence registers to make room. So performance may |
| 1191 | * suffer if the GTT working set is large or there are few fence registers |
| 1192 | * left. |
| 1193 | */ |
| 1194 | int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) |
| 1195 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1196 | struct drm_i915_gem_object *obj = to_intel_bo(vma->vm_private_data); |
| 1197 | struct drm_device *dev = obj->base.dev; |
Chris Wilson | 7d1c480 | 2010-08-07 21:45:03 +0100 | [diff] [blame] | 1198 | drm_i915_private_t *dev_priv = dev->dev_private; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1199 | pgoff_t page_offset; |
| 1200 | unsigned long pfn; |
| 1201 | int ret = 0; |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 1202 | bool write = !!(vmf->flags & FAULT_FLAG_WRITE); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1203 | |
| 1204 | /* We don't use vmf->pgoff since that has the fake offset */ |
| 1205 | page_offset = ((unsigned long)vmf->virtual_address - vma->vm_start) >> |
| 1206 | PAGE_SHIFT; |
| 1207 | |
Chris Wilson | d9bc7e9 | 2011-02-07 13:09:31 +0000 | [diff] [blame] | 1208 | ret = i915_mutex_lock_interruptible(dev); |
| 1209 | if (ret) |
| 1210 | goto out; |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 1211 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1212 | trace_i915_gem_object_fault(obj, page_offset, true, write); |
| 1213 | |
Chris Wilson | d9bc7e9 | 2011-02-07 13:09:31 +0000 | [diff] [blame] | 1214 | /* Now bind it into the GTT if needed */ |
Chris Wilson | 919926a | 2010-11-12 13:42:53 +0000 | [diff] [blame] | 1215 | if (!obj->map_and_fenceable) { |
| 1216 | ret = i915_gem_object_unbind(obj); |
| 1217 | if (ret) |
| 1218 | goto unlock; |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 1219 | } |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1220 | if (!obj->gtt_space) { |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 1221 | ret = i915_gem_object_bind_to_gtt(obj, 0, true); |
Chris Wilson | c715089 | 2009-09-23 00:43:56 +0100 | [diff] [blame] | 1222 | if (ret) |
| 1223 | goto unlock; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1224 | |
Eric Anholt | e92d03b | 2011-06-14 16:43:09 -0700 | [diff] [blame] | 1225 | ret = i915_gem_object_set_to_gtt_domain(obj, write); |
| 1226 | if (ret) |
| 1227 | goto unlock; |
| 1228 | } |
Chris Wilson | 4a684a4 | 2010-10-28 14:44:08 +0100 | [diff] [blame] | 1229 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 1230 | if (obj->tiling_mode == I915_TILING_NONE) |
| 1231 | ret = i915_gem_object_put_fence(obj); |
| 1232 | else |
Chris Wilson | ce453d8 | 2011-02-21 14:43:56 +0000 | [diff] [blame] | 1233 | ret = i915_gem_object_get_fence(obj, NULL); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 1234 | if (ret) |
| 1235 | goto unlock; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1236 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1237 | if (i915_gem_object_is_inactive(obj)) |
| 1238 | list_move_tail(&obj->mm_list, &dev_priv->mm.inactive_list); |
Chris Wilson | 7d1c480 | 2010-08-07 21:45:03 +0100 | [diff] [blame] | 1239 | |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 1240 | obj->fault_mappable = true; |
| 1241 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1242 | pfn = ((dev->agp->base + obj->gtt_offset) >> PAGE_SHIFT) + |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1243 | page_offset; |
| 1244 | |
| 1245 | /* Finally, remap it using the new GTT offset */ |
| 1246 | ret = vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, pfn); |
Chris Wilson | c715089 | 2009-09-23 00:43:56 +0100 | [diff] [blame] | 1247 | unlock: |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1248 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | d9bc7e9 | 2011-02-07 13:09:31 +0000 | [diff] [blame] | 1249 | out: |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1250 | switch (ret) { |
Chris Wilson | d9bc7e9 | 2011-02-07 13:09:31 +0000 | [diff] [blame] | 1251 | case -EIO: |
Chris Wilson | 045e769 | 2010-11-07 09:18:22 +0000 | [diff] [blame] | 1252 | case -EAGAIN: |
Chris Wilson | d9bc7e9 | 2011-02-07 13:09:31 +0000 | [diff] [blame] | 1253 | /* Give the error handler a chance to run and move the |
| 1254 | * objects off the GPU active list. Next time we service the |
| 1255 | * fault, we should be able to transition the page into the |
| 1256 | * GTT without touching the GPU (and so avoid further |
| 1257 | * EIO/EGAIN). If the GPU is wedged, then there is no issue |
| 1258 | * with coherency, just lost writes. |
| 1259 | */ |
Chris Wilson | 045e769 | 2010-11-07 09:18:22 +0000 | [diff] [blame] | 1260 | set_need_resched(); |
Chris Wilson | c715089 | 2009-09-23 00:43:56 +0100 | [diff] [blame] | 1261 | case 0: |
| 1262 | case -ERESTARTSYS: |
Chris Wilson | bed636a | 2011-02-11 20:31:19 +0000 | [diff] [blame] | 1263 | case -EINTR: |
Chris Wilson | c715089 | 2009-09-23 00:43:56 +0100 | [diff] [blame] | 1264 | return VM_FAULT_NOPAGE; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1265 | case -ENOMEM: |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1266 | return VM_FAULT_OOM; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1267 | default: |
Chris Wilson | c715089 | 2009-09-23 00:43:56 +0100 | [diff] [blame] | 1268 | return VM_FAULT_SIGBUS; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1269 | } |
| 1270 | } |
| 1271 | |
| 1272 | /** |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1273 | * i915_gem_release_mmap - remove physical page mappings |
| 1274 | * @obj: obj in question |
| 1275 | * |
André Goddard Rosa | af901ca | 2009-11-14 13:09:05 -0200 | [diff] [blame] | 1276 | * Preserve the reservation of the mmapping with the DRM core code, but |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1277 | * relinquish ownership of the pages back to the system. |
| 1278 | * |
| 1279 | * It is vital that we remove the page mapping if we have mapped a tiled |
| 1280 | * object through the GTT and then lose the fence register due to |
| 1281 | * resource pressure. Similarly if the object has been moved out of the |
| 1282 | * aperture, than pages mapped into userspace must be revoked. Removing the |
| 1283 | * mapping will then trigger a page fault on the next user access, allowing |
| 1284 | * fixup by i915_gem_fault(). |
| 1285 | */ |
Eric Anholt | d05ca30 | 2009-07-10 13:02:26 -0700 | [diff] [blame] | 1286 | void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1287 | i915_gem_release_mmap(struct drm_i915_gem_object *obj) |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1288 | { |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 1289 | if (!obj->fault_mappable) |
| 1290 | return; |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1291 | |
Chris Wilson | f6e4788 | 2011-03-20 21:09:12 +0000 | [diff] [blame] | 1292 | if (obj->base.dev->dev_mapping) |
| 1293 | unmap_mapping_range(obj->base.dev->dev_mapping, |
| 1294 | (loff_t)obj->base.map_list.hash.key<<PAGE_SHIFT, |
| 1295 | obj->base.size, 1); |
Daniel Vetter | fb7d516 | 2010-10-01 22:05:20 +0200 | [diff] [blame] | 1296 | |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 1297 | obj->fault_mappable = false; |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1298 | } |
| 1299 | |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1300 | static uint32_t |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1301 | 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] | 1302 | { |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1303 | uint32_t gtt_size; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1304 | |
| 1305 | if (INTEL_INFO(dev)->gen >= 4 || |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1306 | tiling_mode == I915_TILING_NONE) |
| 1307 | return size; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1308 | |
| 1309 | /* Previous chips need a power-of-two fence region when tiling */ |
| 1310 | if (INTEL_INFO(dev)->gen == 3) |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1311 | gtt_size = 1024*1024; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1312 | else |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1313 | gtt_size = 512*1024; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1314 | |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1315 | while (gtt_size < size) |
| 1316 | gtt_size <<= 1; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1317 | |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1318 | return gtt_size; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1319 | } |
| 1320 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1321 | /** |
| 1322 | * i915_gem_get_gtt_alignment - return required GTT alignment for an object |
| 1323 | * @obj: object to check |
| 1324 | * |
| 1325 | * Return the required GTT alignment for an object, taking into account |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 1326 | * potential fence register mapping. |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1327 | */ |
| 1328 | static uint32_t |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1329 | i915_gem_get_gtt_alignment(struct drm_device *dev, |
| 1330 | uint32_t size, |
| 1331 | int tiling_mode) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1332 | { |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1333 | /* |
| 1334 | * Minimum alignment is 4k (GTT page size), but might be greater |
| 1335 | * if a fence register is needed for the object. |
| 1336 | */ |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 1337 | if (INTEL_INFO(dev)->gen >= 4 || |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1338 | tiling_mode == I915_TILING_NONE) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1339 | return 4096; |
| 1340 | |
| 1341 | /* |
| 1342 | * Previous chips need to be aligned to the size of the smallest |
| 1343 | * fence register that can contain the object. |
| 1344 | */ |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1345 | return i915_gem_get_gtt_size(dev, size, tiling_mode); |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 1346 | } |
| 1347 | |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 1348 | /** |
| 1349 | * i915_gem_get_unfenced_gtt_alignment - return required GTT alignment for an |
| 1350 | * unfenced object |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1351 | * @dev: the device |
| 1352 | * @size: size of the object |
| 1353 | * @tiling_mode: tiling mode of the object |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 1354 | * |
| 1355 | * Return the required GTT alignment for an object, only taking into account |
| 1356 | * unfenced tiled surface requirements. |
| 1357 | */ |
Chris Wilson | 467cffb | 2011-03-07 10:42:03 +0000 | [diff] [blame] | 1358 | uint32_t |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1359 | i915_gem_get_unfenced_gtt_alignment(struct drm_device *dev, |
| 1360 | uint32_t size, |
| 1361 | int tiling_mode) |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 1362 | { |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 1363 | /* |
| 1364 | * Minimum alignment is 4k (GTT page size) for sane hw. |
| 1365 | */ |
| 1366 | if (INTEL_INFO(dev)->gen >= 4 || IS_G33(dev) || |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1367 | tiling_mode == I915_TILING_NONE) |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 1368 | return 4096; |
| 1369 | |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1370 | /* Previous hardware however needs to be aligned to a power-of-two |
| 1371 | * tile height. The simplest method for determining this is to reuse |
| 1372 | * the power-of-tile object size. |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 1373 | */ |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1374 | return i915_gem_get_gtt_size(dev, size, tiling_mode); |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 1375 | } |
| 1376 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1377 | int |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 1378 | i915_gem_mmap_gtt(struct drm_file *file, |
| 1379 | struct drm_device *dev, |
| 1380 | uint32_t handle, |
| 1381 | uint64_t *offset) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1382 | { |
Chris Wilson | da761a6 | 2010-10-27 17:37:08 +0100 | [diff] [blame] | 1383 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1384 | struct drm_i915_gem_object *obj; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1385 | int ret; |
| 1386 | |
| 1387 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 1388 | return -ENODEV; |
| 1389 | |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1390 | ret = i915_mutex_lock_interruptible(dev); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1391 | if (ret) |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1392 | return ret; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1393 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 1394 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 1395 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1396 | ret = -ENOENT; |
| 1397 | goto unlock; |
| 1398 | } |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1399 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1400 | if (obj->base.size > dev_priv->mm.gtt_mappable_end) { |
Chris Wilson | da761a6 | 2010-10-27 17:37:08 +0100 | [diff] [blame] | 1401 | ret = -E2BIG; |
Eric Anholt | ff56b0b | 2011-10-31 23:16:21 -0700 | [diff] [blame] | 1402 | goto out; |
Chris Wilson | da761a6 | 2010-10-27 17:37:08 +0100 | [diff] [blame] | 1403 | } |
| 1404 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1405 | if (obj->madv != I915_MADV_WILLNEED) { |
Chris Wilson | ab18282 | 2009-09-22 18:46:17 +0100 | [diff] [blame] | 1406 | DRM_ERROR("Attempting to mmap a purgeable buffer\n"); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1407 | ret = -EINVAL; |
| 1408 | goto out; |
Chris Wilson | ab18282 | 2009-09-22 18:46:17 +0100 | [diff] [blame] | 1409 | } |
| 1410 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1411 | if (!obj->base.map_list.map) { |
Rob Clark | b464e9a | 2011-08-10 08:09:08 -0500 | [diff] [blame] | 1412 | ret = drm_gem_create_mmap_offset(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1413 | if (ret) |
| 1414 | goto out; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1415 | } |
| 1416 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 1417 | *offset = (u64)obj->base.map_list.hash.key << PAGE_SHIFT; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1418 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1419 | out: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1420 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1421 | unlock: |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1422 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1423 | return ret; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1424 | } |
| 1425 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 1426 | /** |
| 1427 | * i915_gem_mmap_gtt_ioctl - prepare an object for GTT mmap'ing |
| 1428 | * @dev: DRM device |
| 1429 | * @data: GTT mapping ioctl data |
| 1430 | * @file: GEM object info |
| 1431 | * |
| 1432 | * Simply returns the fake offset to userspace so it can mmap it. |
| 1433 | * The mmap call will end up in drm_gem_mmap(), which will set things |
| 1434 | * up so we can get faults in the handler above. |
| 1435 | * |
| 1436 | * The fault handler will take care of binding the object into the GTT |
| 1437 | * (since it may have been evicted to make room for something), allocating |
| 1438 | * a fence register, and mapping the appropriate aperture address into |
| 1439 | * userspace. |
| 1440 | */ |
| 1441 | int |
| 1442 | i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data, |
| 1443 | struct drm_file *file) |
| 1444 | { |
| 1445 | struct drm_i915_gem_mmap_gtt *args = data; |
| 1446 | |
| 1447 | if (!(dev->driver->driver_features & DRIVER_GEM)) |
| 1448 | return -ENODEV; |
| 1449 | |
| 1450 | return i915_gem_mmap_gtt(file, dev, args->handle, &args->offset); |
| 1451 | } |
| 1452 | |
| 1453 | |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1454 | static int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1455 | i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj, |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1456 | gfp_t gfpmask) |
| 1457 | { |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1458 | int page_count, i; |
| 1459 | struct address_space *mapping; |
| 1460 | struct inode *inode; |
| 1461 | struct page *page; |
| 1462 | |
| 1463 | /* Get the list of pages out of our struct file. They'll be pinned |
| 1464 | * at this point until we release them. |
| 1465 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1466 | page_count = obj->base.size / PAGE_SIZE; |
| 1467 | BUG_ON(obj->pages != NULL); |
| 1468 | obj->pages = drm_malloc_ab(page_count, sizeof(struct page *)); |
| 1469 | if (obj->pages == NULL) |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1470 | return -ENOMEM; |
| 1471 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1472 | inode = obj->base.filp->f_path.dentry->d_inode; |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1473 | mapping = inode->i_mapping; |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 1474 | gfpmask |= mapping_gfp_mask(mapping); |
| 1475 | |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1476 | for (i = 0; i < page_count; i++) { |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 1477 | page = shmem_read_mapping_page_gfp(mapping, i, gfpmask); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1478 | if (IS_ERR(page)) |
| 1479 | goto err_pages; |
| 1480 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1481 | obj->pages[i] = page; |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1482 | } |
| 1483 | |
Daniel Vetter | 6dacfd2 | 2011-09-12 21:30:02 +0200 | [diff] [blame] | 1484 | if (i915_gem_object_needs_bit17_swizzle(obj)) |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1485 | i915_gem_object_do_bit_17_swizzle(obj); |
| 1486 | |
| 1487 | return 0; |
| 1488 | |
| 1489 | err_pages: |
| 1490 | while (i--) |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1491 | page_cache_release(obj->pages[i]); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1492 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1493 | drm_free_large(obj->pages); |
| 1494 | obj->pages = NULL; |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1495 | return PTR_ERR(page); |
| 1496 | } |
| 1497 | |
Chris Wilson | 5cdf588 | 2010-09-27 15:51:07 +0100 | [diff] [blame] | 1498 | static void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1499 | i915_gem_object_put_pages_gtt(struct drm_i915_gem_object *obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1500 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1501 | int page_count = obj->base.size / PAGE_SIZE; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1502 | int i; |
| 1503 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1504 | BUG_ON(obj->madv == __I915_MADV_PURGED); |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 1505 | |
Daniel Vetter | 6dacfd2 | 2011-09-12 21:30:02 +0200 | [diff] [blame] | 1506 | if (i915_gem_object_needs_bit17_swizzle(obj)) |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 1507 | i915_gem_object_save_bit_17_swizzle(obj); |
| 1508 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1509 | if (obj->madv == I915_MADV_DONTNEED) |
| 1510 | obj->dirty = 0; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 1511 | |
| 1512 | for (i = 0; i < page_count; i++) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1513 | if (obj->dirty) |
| 1514 | set_page_dirty(obj->pages[i]); |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 1515 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1516 | if (obj->madv == I915_MADV_WILLNEED) |
| 1517 | mark_page_accessed(obj->pages[i]); |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 1518 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1519 | page_cache_release(obj->pages[i]); |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 1520 | } |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1521 | obj->dirty = 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1522 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1523 | drm_free_large(obj->pages); |
| 1524 | obj->pages = NULL; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1525 | } |
| 1526 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1527 | void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1528 | i915_gem_object_move_to_active(struct drm_i915_gem_object *obj, |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 1529 | struct intel_ring_buffer *ring, |
| 1530 | u32 seqno) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1531 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1532 | struct drm_device *dev = obj->base.dev; |
Chris Wilson | 69dc498 | 2010-10-19 10:36:51 +0100 | [diff] [blame] | 1533 | struct drm_i915_private *dev_priv = dev->dev_private; |
Daniel Vetter | 617dbe2 | 2010-02-11 22:16:02 +0100 | [diff] [blame] | 1534 | |
Zou Nan hai | 852835f | 2010-05-21 09:08:56 +0800 | [diff] [blame] | 1535 | BUG_ON(ring == NULL); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1536 | obj->ring = ring; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1537 | |
| 1538 | /* Add a reference if we're newly entering the active list. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1539 | if (!obj->active) { |
| 1540 | drm_gem_object_reference(&obj->base); |
| 1541 | obj->active = 1; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1542 | } |
Daniel Vetter | e35a41d | 2010-02-11 22:13:59 +0100 | [diff] [blame] | 1543 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1544 | /* Move from whatever list we were on to the tail of execution. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1545 | list_move_tail(&obj->mm_list, &dev_priv->mm.active_list); |
| 1546 | list_move_tail(&obj->ring_list, &ring->active_list); |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 1547 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1548 | obj->last_rendering_seqno = seqno; |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 1549 | if (obj->fenced_gpu_access) { |
| 1550 | struct drm_i915_fence_reg *reg; |
| 1551 | |
| 1552 | BUG_ON(obj->fence_reg == I915_FENCE_REG_NONE); |
| 1553 | |
| 1554 | obj->last_fenced_seqno = seqno; |
| 1555 | obj->last_fenced_ring = ring; |
| 1556 | |
| 1557 | reg = &dev_priv->fence_regs[obj->fence_reg]; |
| 1558 | list_move_tail(®->lru_list, &dev_priv->mm.fence_list); |
| 1559 | } |
| 1560 | } |
| 1561 | |
| 1562 | static void |
| 1563 | i915_gem_object_move_off_active(struct drm_i915_gem_object *obj) |
| 1564 | { |
| 1565 | list_del_init(&obj->ring_list); |
| 1566 | obj->last_rendering_seqno = 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1567 | } |
| 1568 | |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 1569 | static void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1570 | i915_gem_object_move_to_flushing(struct drm_i915_gem_object *obj) |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 1571 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1572 | struct drm_device *dev = obj->base.dev; |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 1573 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 1574 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1575 | BUG_ON(!obj->active); |
| 1576 | list_move_tail(&obj->mm_list, &dev_priv->mm.flushing_list); |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 1577 | |
| 1578 | i915_gem_object_move_off_active(obj); |
| 1579 | } |
| 1580 | |
| 1581 | static void |
| 1582 | i915_gem_object_move_to_inactive(struct drm_i915_gem_object *obj) |
| 1583 | { |
| 1584 | struct drm_device *dev = obj->base.dev; |
| 1585 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1586 | |
| 1587 | if (obj->pin_count != 0) |
| 1588 | list_move_tail(&obj->mm_list, &dev_priv->mm.pinned_list); |
| 1589 | else |
| 1590 | list_move_tail(&obj->mm_list, &dev_priv->mm.inactive_list); |
| 1591 | |
| 1592 | BUG_ON(!list_empty(&obj->gpu_write_list)); |
| 1593 | BUG_ON(!obj->active); |
| 1594 | obj->ring = NULL; |
| 1595 | |
| 1596 | i915_gem_object_move_off_active(obj); |
| 1597 | obj->fenced_gpu_access = false; |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 1598 | |
| 1599 | obj->active = 0; |
Chris Wilson | 87ca9c8 | 2010-12-02 09:42:56 +0000 | [diff] [blame] | 1600 | obj->pending_gpu_write = false; |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 1601 | drm_gem_object_unreference(&obj->base); |
| 1602 | |
| 1603 | WARN_ON(i915_verify_lists(dev)); |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 1604 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1605 | |
Chris Wilson | 963b483 | 2009-09-20 23:03:54 +0100 | [diff] [blame] | 1606 | /* Immediately discard the backing storage */ |
| 1607 | static void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1608 | i915_gem_object_truncate(struct drm_i915_gem_object *obj) |
Chris Wilson | 963b483 | 2009-09-20 23:03:54 +0100 | [diff] [blame] | 1609 | { |
Chris Wilson | bb6baf7 | 2009-09-22 14:24:13 +0100 | [diff] [blame] | 1610 | struct inode *inode; |
Chris Wilson | 963b483 | 2009-09-20 23:03:54 +0100 | [diff] [blame] | 1611 | |
Chris Wilson | ae9fed6 | 2010-08-07 11:01:30 +0100 | [diff] [blame] | 1612 | /* Our goal here is to return as much of the memory as |
| 1613 | * is possible back to the system as we are called from OOM. |
| 1614 | * To do this we must instruct the shmfs to drop all of its |
Hugh Dickins | e2377fe | 2011-06-27 16:18:19 -0700 | [diff] [blame] | 1615 | * backing pages, *now*. |
Chris Wilson | ae9fed6 | 2010-08-07 11:01:30 +0100 | [diff] [blame] | 1616 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1617 | inode = obj->base.filp->f_path.dentry->d_inode; |
Hugh Dickins | e2377fe | 2011-06-27 16:18:19 -0700 | [diff] [blame] | 1618 | shmem_truncate_range(inode, 0, (loff_t)-1); |
Chris Wilson | bb6baf7 | 2009-09-22 14:24:13 +0100 | [diff] [blame] | 1619 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1620 | obj->madv = __I915_MADV_PURGED; |
Chris Wilson | 963b483 | 2009-09-20 23:03:54 +0100 | [diff] [blame] | 1621 | } |
| 1622 | |
| 1623 | static inline int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1624 | i915_gem_object_is_purgeable(struct drm_i915_gem_object *obj) |
Chris Wilson | 963b483 | 2009-09-20 23:03:54 +0100 | [diff] [blame] | 1625 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1626 | return obj->madv == I915_MADV_DONTNEED; |
Chris Wilson | 963b483 | 2009-09-20 23:03:54 +0100 | [diff] [blame] | 1627 | } |
| 1628 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1629 | static void |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1630 | i915_gem_process_flushing_list(struct intel_ring_buffer *ring, |
| 1631 | uint32_t flush_domains) |
Daniel Vetter | 6356039 | 2010-02-19 11:51:59 +0100 | [diff] [blame] | 1632 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1633 | struct drm_i915_gem_object *obj, *next; |
Daniel Vetter | 6356039 | 2010-02-19 11:51:59 +0100 | [diff] [blame] | 1634 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1635 | list_for_each_entry_safe(obj, next, |
Chris Wilson | 6419340 | 2010-10-24 12:38:05 +0100 | [diff] [blame] | 1636 | &ring->gpu_write_list, |
Daniel Vetter | 6356039 | 2010-02-19 11:51:59 +0100 | [diff] [blame] | 1637 | gpu_write_list) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1638 | if (obj->base.write_domain & flush_domains) { |
| 1639 | uint32_t old_write_domain = obj->base.write_domain; |
Daniel Vetter | 6356039 | 2010-02-19 11:51:59 +0100 | [diff] [blame] | 1640 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1641 | obj->base.write_domain = 0; |
| 1642 | list_del_init(&obj->gpu_write_list); |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 1643 | i915_gem_object_move_to_active(obj, ring, |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1644 | i915_gem_next_request_seqno(ring)); |
Daniel Vetter | 6356039 | 2010-02-19 11:51:59 +0100 | [diff] [blame] | 1645 | |
Daniel Vetter | 6356039 | 2010-02-19 11:51:59 +0100 | [diff] [blame] | 1646 | trace_i915_gem_object_change_domain(obj, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1647 | obj->base.read_domains, |
Daniel Vetter | 6356039 | 2010-02-19 11:51:59 +0100 | [diff] [blame] | 1648 | old_write_domain); |
| 1649 | } |
| 1650 | } |
| 1651 | } |
Zou Nan hai | 8187a2b | 2010-05-21 09:08:55 +0800 | [diff] [blame] | 1652 | |
Chris Wilson | 3cce469 | 2010-10-27 16:11:02 +0100 | [diff] [blame] | 1653 | int |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1654 | i915_add_request(struct intel_ring_buffer *ring, |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 1655 | struct drm_file *file, |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1656 | struct drm_i915_gem_request *request) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1657 | { |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1658 | drm_i915_private_t *dev_priv = ring->dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1659 | uint32_t seqno; |
| 1660 | int was_empty; |
Chris Wilson | 3cce469 | 2010-10-27 16:11:02 +0100 | [diff] [blame] | 1661 | int ret; |
| 1662 | |
| 1663 | BUG_ON(request == NULL); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1664 | |
Chris Wilson | 3cce469 | 2010-10-27 16:11:02 +0100 | [diff] [blame] | 1665 | ret = ring->add_request(ring, &seqno); |
| 1666 | if (ret) |
| 1667 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1668 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1669 | trace_i915_gem_request_add(ring, seqno); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1670 | |
| 1671 | request->seqno = seqno; |
Zou Nan hai | 852835f | 2010-05-21 09:08:56 +0800 | [diff] [blame] | 1672 | request->ring = ring; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1673 | request->emitted_jiffies = jiffies; |
Zou Nan hai | 852835f | 2010-05-21 09:08:56 +0800 | [diff] [blame] | 1674 | was_empty = list_empty(&ring->request_list); |
| 1675 | list_add_tail(&request->list, &ring->request_list); |
| 1676 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1677 | if (file) { |
| 1678 | struct drm_i915_file_private *file_priv = file->driver_priv; |
| 1679 | |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 1680 | spin_lock(&file_priv->mm.lock); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 1681 | request->file_priv = file_priv; |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 1682 | list_add_tail(&request->client_list, |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 1683 | &file_priv->mm.request_list); |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 1684 | spin_unlock(&file_priv->mm.lock); |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 1685 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1686 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1687 | ring->outstanding_lazy_request = false; |
| 1688 | |
Ben Gamari | f65d942 | 2009-09-14 17:48:44 -0400 | [diff] [blame] | 1689 | if (!dev_priv->mm.suspended) { |
Ben Widawsky | 3e0dc6b | 2011-06-29 10:26:42 -0700 | [diff] [blame] | 1690 | if (i915_enable_hangcheck) { |
| 1691 | mod_timer(&dev_priv->hangcheck_timer, |
| 1692 | jiffies + |
| 1693 | msecs_to_jiffies(DRM_I915_HANGCHECK_PERIOD)); |
| 1694 | } |
Ben Gamari | f65d942 | 2009-09-14 17:48:44 -0400 | [diff] [blame] | 1695 | if (was_empty) |
Chris Wilson | b3b079d | 2010-09-13 23:44:34 +0100 | [diff] [blame] | 1696 | queue_delayed_work(dev_priv->wq, |
| 1697 | &dev_priv->mm.retire_work, HZ); |
Ben Gamari | f65d942 | 2009-09-14 17:48:44 -0400 | [diff] [blame] | 1698 | } |
Chris Wilson | 3cce469 | 2010-10-27 16:11:02 +0100 | [diff] [blame] | 1699 | return 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1700 | } |
| 1701 | |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 1702 | static inline void |
| 1703 | i915_gem_request_remove_from_client(struct drm_i915_gem_request *request) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1704 | { |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 1705 | struct drm_i915_file_private *file_priv = request->file_priv; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1706 | |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 1707 | if (!file_priv) |
| 1708 | return; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 1709 | |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 1710 | spin_lock(&file_priv->mm.lock); |
Herton Ronaldo Krzesinski | 09bfa51 | 2011-03-17 13:45:12 +0000 | [diff] [blame] | 1711 | if (request->file_priv) { |
| 1712 | list_del(&request->client_list); |
| 1713 | request->file_priv = NULL; |
| 1714 | } |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 1715 | spin_unlock(&file_priv->mm.lock); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1716 | } |
| 1717 | |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 1718 | static void i915_gem_reset_ring_lists(struct drm_i915_private *dev_priv, |
| 1719 | struct intel_ring_buffer *ring) |
Chris Wilson | 9375e44 | 2010-09-19 12:21:28 +0100 | [diff] [blame] | 1720 | { |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 1721 | while (!list_empty(&ring->request_list)) { |
| 1722 | struct drm_i915_gem_request *request; |
Chris Wilson | 9375e44 | 2010-09-19 12:21:28 +0100 | [diff] [blame] | 1723 | |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 1724 | request = list_first_entry(&ring->request_list, |
| 1725 | struct drm_i915_gem_request, |
| 1726 | list); |
| 1727 | |
| 1728 | list_del(&request->list); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 1729 | i915_gem_request_remove_from_client(request); |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 1730 | kfree(request); |
| 1731 | } |
| 1732 | |
| 1733 | while (!list_empty(&ring->active_list)) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1734 | struct drm_i915_gem_object *obj; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1735 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1736 | obj = list_first_entry(&ring->active_list, |
| 1737 | struct drm_i915_gem_object, |
| 1738 | ring_list); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1739 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1740 | obj->base.write_domain = 0; |
| 1741 | list_del_init(&obj->gpu_write_list); |
| 1742 | i915_gem_object_move_to_inactive(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1743 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1744 | } |
| 1745 | |
Chris Wilson | 312817a | 2010-11-22 11:50:11 +0000 | [diff] [blame] | 1746 | static void i915_gem_reset_fences(struct drm_device *dev) |
| 1747 | { |
| 1748 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1749 | int i; |
| 1750 | |
Daniel Vetter | 4b9de73 | 2011-10-09 21:52:02 +0200 | [diff] [blame] | 1751 | for (i = 0; i < dev_priv->num_fence_regs; i++) { |
Chris Wilson | 312817a | 2010-11-22 11:50:11 +0000 | [diff] [blame] | 1752 | struct drm_i915_fence_reg *reg = &dev_priv->fence_regs[i]; |
Chris Wilson | 7d2cb39 | 2010-11-27 17:38:29 +0000 | [diff] [blame] | 1753 | struct drm_i915_gem_object *obj = reg->obj; |
| 1754 | |
| 1755 | if (!obj) |
| 1756 | continue; |
| 1757 | |
| 1758 | if (obj->tiling_mode) |
| 1759 | i915_gem_release_mmap(obj); |
| 1760 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 1761 | reg->obj->fence_reg = I915_FENCE_REG_NONE; |
| 1762 | reg->obj->fenced_gpu_access = false; |
| 1763 | reg->obj->last_fenced_seqno = 0; |
| 1764 | reg->obj->last_fenced_ring = NULL; |
| 1765 | i915_gem_clear_fence_reg(dev, reg); |
Chris Wilson | 312817a | 2010-11-22 11:50:11 +0000 | [diff] [blame] | 1766 | } |
| 1767 | } |
| 1768 | |
Chris Wilson | 069efc1 | 2010-09-30 16:53:18 +0100 | [diff] [blame] | 1769 | void i915_gem_reset(struct drm_device *dev) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1770 | { |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 1771 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1772 | struct drm_i915_gem_object *obj; |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 1773 | int i; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1774 | |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 1775 | for (i = 0; i < I915_NUM_RINGS; i++) |
| 1776 | i915_gem_reset_ring_lists(dev_priv, &dev_priv->ring[i]); |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 1777 | |
| 1778 | /* Remove anything from the flushing lists. The GPU cache is likely |
| 1779 | * to be lost on reset along with the data, so simply move the |
| 1780 | * lost bo to the inactive list. |
| 1781 | */ |
| 1782 | while (!list_empty(&dev_priv->mm.flushing_list)) { |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 1783 | obj = list_first_entry(&dev_priv->mm.flushing_list, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1784 | struct drm_i915_gem_object, |
| 1785 | mm_list); |
Chris Wilson | 9375e44 | 2010-09-19 12:21:28 +0100 | [diff] [blame] | 1786 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1787 | obj->base.write_domain = 0; |
| 1788 | list_del_init(&obj->gpu_write_list); |
| 1789 | i915_gem_object_move_to_inactive(obj); |
Chris Wilson | 9375e44 | 2010-09-19 12:21:28 +0100 | [diff] [blame] | 1790 | } |
Chris Wilson | 9375e44 | 2010-09-19 12:21:28 +0100 | [diff] [blame] | 1791 | |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 1792 | /* Move everything out of the GPU domains to ensure we do any |
| 1793 | * necessary invalidation upon reuse. |
| 1794 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1795 | list_for_each_entry(obj, |
Chris Wilson | 77f0123 | 2010-09-19 12:31:36 +0100 | [diff] [blame] | 1796 | &dev_priv->mm.inactive_list, |
Chris Wilson | 69dc498 | 2010-10-19 10:36:51 +0100 | [diff] [blame] | 1797 | mm_list) |
Chris Wilson | 77f0123 | 2010-09-19 12:31:36 +0100 | [diff] [blame] | 1798 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1799 | obj->base.read_domains &= ~I915_GEM_GPU_DOMAINS; |
Chris Wilson | 77f0123 | 2010-09-19 12:31:36 +0100 | [diff] [blame] | 1800 | } |
Chris Wilson | 069efc1 | 2010-09-30 16:53:18 +0100 | [diff] [blame] | 1801 | |
| 1802 | /* The fence registers are invalidated so clear them out */ |
Chris Wilson | 312817a | 2010-11-22 11:50:11 +0000 | [diff] [blame] | 1803 | i915_gem_reset_fences(dev); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1804 | } |
| 1805 | |
| 1806 | /** |
| 1807 | * This function clears the request list as sequence numbers are passed. |
| 1808 | */ |
Chris Wilson | b09a1fe | 2010-07-23 23:18:49 +0100 | [diff] [blame] | 1809 | static void |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1810 | i915_gem_retire_requests_ring(struct intel_ring_buffer *ring) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1811 | { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1812 | uint32_t seqno; |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 1813 | int i; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1814 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1815 | if (list_empty(&ring->request_list)) |
Karsten Wiese | 6c0594a | 2009-02-23 15:07:57 +0100 | [diff] [blame] | 1816 | return; |
| 1817 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1818 | WARN_ON(i915_verify_lists(ring->dev)); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1819 | |
Chris Wilson | 78501ea | 2010-10-27 12:18:21 +0100 | [diff] [blame] | 1820 | seqno = ring->get_seqno(ring); |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 1821 | |
Chris Wilson | 076e2c0 | 2011-01-21 10:07:18 +0000 | [diff] [blame] | 1822 | for (i = 0; i < ARRAY_SIZE(ring->sync_seqno); i++) |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 1823 | if (seqno >= ring->sync_seqno[i]) |
| 1824 | ring->sync_seqno[i] = 0; |
| 1825 | |
Zou Nan hai | 852835f | 2010-05-21 09:08:56 +0800 | [diff] [blame] | 1826 | while (!list_empty(&ring->request_list)) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1827 | struct drm_i915_gem_request *request; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1828 | |
Zou Nan hai | 852835f | 2010-05-21 09:08:56 +0800 | [diff] [blame] | 1829 | request = list_first_entry(&ring->request_list, |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1830 | struct drm_i915_gem_request, |
| 1831 | list); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1832 | |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 1833 | if (!i915_seqno_passed(seqno, request->seqno)) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1834 | break; |
Chris Wilson | b84d5f0 | 2010-09-18 01:38:04 +0100 | [diff] [blame] | 1835 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1836 | trace_i915_gem_request_retire(ring, request->seqno); |
Chris Wilson | b84d5f0 | 2010-09-18 01:38:04 +0100 | [diff] [blame] | 1837 | |
| 1838 | list_del(&request->list); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 1839 | i915_gem_request_remove_from_client(request); |
Chris Wilson | b84d5f0 | 2010-09-18 01:38:04 +0100 | [diff] [blame] | 1840 | kfree(request); |
| 1841 | } |
| 1842 | |
| 1843 | /* Move any buffers on the active list that are no longer referenced |
| 1844 | * by the ringbuffer to the flushing/inactive lists as appropriate. |
| 1845 | */ |
| 1846 | while (!list_empty(&ring->active_list)) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1847 | struct drm_i915_gem_object *obj; |
Chris Wilson | b84d5f0 | 2010-09-18 01:38:04 +0100 | [diff] [blame] | 1848 | |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 1849 | obj = list_first_entry(&ring->active_list, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1850 | struct drm_i915_gem_object, |
| 1851 | ring_list); |
Chris Wilson | b84d5f0 | 2010-09-18 01:38:04 +0100 | [diff] [blame] | 1852 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1853 | if (!i915_seqno_passed(seqno, obj->last_rendering_seqno)) |
Chris Wilson | b84d5f0 | 2010-09-18 01:38:04 +0100 | [diff] [blame] | 1854 | break; |
| 1855 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1856 | if (obj->base.write_domain != 0) |
Chris Wilson | b84d5f0 | 2010-09-18 01:38:04 +0100 | [diff] [blame] | 1857 | i915_gem_object_move_to_flushing(obj); |
| 1858 | else |
| 1859 | i915_gem_object_move_to_inactive(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1860 | } |
Chris Wilson | 9d34e5d | 2009-09-24 05:26:06 +0100 | [diff] [blame] | 1861 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1862 | if (unlikely(ring->trace_irq_seqno && |
| 1863 | i915_seqno_passed(seqno, ring->trace_irq_seqno))) { |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 1864 | ring->irq_put(ring); |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1865 | ring->trace_irq_seqno = 0; |
Chris Wilson | 9d34e5d | 2009-09-24 05:26:06 +0100 | [diff] [blame] | 1866 | } |
Chris Wilson | 23bc598 | 2010-09-29 16:10:57 +0100 | [diff] [blame] | 1867 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1868 | WARN_ON(i915_verify_lists(ring->dev)); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1869 | } |
| 1870 | |
| 1871 | void |
Chris Wilson | b09a1fe | 2010-07-23 23:18:49 +0100 | [diff] [blame] | 1872 | i915_gem_retire_requests(struct drm_device *dev) |
| 1873 | { |
| 1874 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 1875 | int i; |
Chris Wilson | b09a1fe | 2010-07-23 23:18:49 +0100 | [diff] [blame] | 1876 | |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 1877 | if (!list_empty(&dev_priv->mm.deferred_free_list)) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1878 | struct drm_i915_gem_object *obj, *next; |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 1879 | |
| 1880 | /* We must be careful that during unbind() we do not |
| 1881 | * accidentally infinitely recurse into retire requests. |
| 1882 | * Currently: |
| 1883 | * retire -> free -> unbind -> wait -> retire_ring |
| 1884 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1885 | list_for_each_entry_safe(obj, next, |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 1886 | &dev_priv->mm.deferred_free_list, |
Chris Wilson | 69dc498 | 2010-10-19 10:36:51 +0100 | [diff] [blame] | 1887 | mm_list) |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1888 | i915_gem_free_object_tail(obj); |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 1889 | } |
| 1890 | |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 1891 | for (i = 0; i < I915_NUM_RINGS; i++) |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1892 | i915_gem_retire_requests_ring(&dev_priv->ring[i]); |
Chris Wilson | b09a1fe | 2010-07-23 23:18:49 +0100 | [diff] [blame] | 1893 | } |
| 1894 | |
Daniel Vetter | 75ef9da | 2010-08-21 00:25:16 +0200 | [diff] [blame] | 1895 | static void |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1896 | i915_gem_retire_work_handler(struct work_struct *work) |
| 1897 | { |
| 1898 | drm_i915_private_t *dev_priv; |
| 1899 | struct drm_device *dev; |
Chris Wilson | 0a58705 | 2011-01-09 21:05:44 +0000 | [diff] [blame] | 1900 | bool idle; |
| 1901 | int i; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1902 | |
| 1903 | dev_priv = container_of(work, drm_i915_private_t, |
| 1904 | mm.retire_work.work); |
| 1905 | dev = dev_priv->dev; |
| 1906 | |
Chris Wilson | 891b48c | 2010-09-29 12:26:37 +0100 | [diff] [blame] | 1907 | /* Come back later if the device is busy... */ |
| 1908 | if (!mutex_trylock(&dev->struct_mutex)) { |
| 1909 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, HZ); |
| 1910 | return; |
| 1911 | } |
| 1912 | |
Chris Wilson | b09a1fe | 2010-07-23 23:18:49 +0100 | [diff] [blame] | 1913 | i915_gem_retire_requests(dev); |
Zou Nan hai | d1b851f | 2010-05-21 09:08:57 +0800 | [diff] [blame] | 1914 | |
Chris Wilson | 0a58705 | 2011-01-09 21:05:44 +0000 | [diff] [blame] | 1915 | /* Send a periodic flush down the ring so we don't hold onto GEM |
| 1916 | * objects indefinitely. |
| 1917 | */ |
| 1918 | idle = true; |
| 1919 | for (i = 0; i < I915_NUM_RINGS; i++) { |
| 1920 | struct intel_ring_buffer *ring = &dev_priv->ring[i]; |
| 1921 | |
| 1922 | if (!list_empty(&ring->gpu_write_list)) { |
| 1923 | struct drm_i915_gem_request *request; |
| 1924 | int ret; |
| 1925 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1926 | ret = i915_gem_flush_ring(ring, |
| 1927 | 0, I915_GEM_GPU_DOMAINS); |
Chris Wilson | 0a58705 | 2011-01-09 21:05:44 +0000 | [diff] [blame] | 1928 | request = kzalloc(sizeof(*request), GFP_KERNEL); |
| 1929 | if (ret || request == NULL || |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1930 | i915_add_request(ring, NULL, request)) |
Chris Wilson | 0a58705 | 2011-01-09 21:05:44 +0000 | [diff] [blame] | 1931 | kfree(request); |
| 1932 | } |
| 1933 | |
| 1934 | idle &= list_empty(&ring->request_list); |
| 1935 | } |
| 1936 | |
| 1937 | if (!dev_priv->mm.suspended && !idle) |
Eric Anholt | 9c9fe1f | 2009-08-03 16:09:16 -0700 | [diff] [blame] | 1938 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, HZ); |
Chris Wilson | 0a58705 | 2011-01-09 21:05:44 +0000 | [diff] [blame] | 1939 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1940 | mutex_unlock(&dev->struct_mutex); |
| 1941 | } |
| 1942 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1943 | /** |
| 1944 | * Waits for a sequence number to be signaled, and cleans up the |
| 1945 | * request and object lists appropriately for that event. |
| 1946 | */ |
Daniel Vetter | 5a5a0c6 | 2009-09-15 22:57:36 +0200 | [diff] [blame] | 1947 | int |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1948 | i915_wait_request(struct intel_ring_buffer *ring, |
Ben Widawsky | b93f9cf | 2012-01-25 15:39:34 -0800 | [diff] [blame] | 1949 | uint32_t seqno, |
| 1950 | bool do_retire) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1951 | { |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1952 | drm_i915_private_t *dev_priv = ring->dev->dev_private; |
Jesse Barnes | 802c7eb | 2009-05-05 16:03:48 -0700 | [diff] [blame] | 1953 | u32 ier; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1954 | int ret = 0; |
| 1955 | |
| 1956 | BUG_ON(seqno == 0); |
| 1957 | |
Chris Wilson | d9bc7e9 | 2011-02-07 13:09:31 +0000 | [diff] [blame] | 1958 | if (atomic_read(&dev_priv->mm.wedged)) { |
| 1959 | struct completion *x = &dev_priv->error_completion; |
| 1960 | bool recovery_complete; |
| 1961 | unsigned long flags; |
| 1962 | |
| 1963 | /* Give the error handler a chance to run. */ |
| 1964 | spin_lock_irqsave(&x->wait.lock, flags); |
| 1965 | recovery_complete = x->done > 0; |
| 1966 | spin_unlock_irqrestore(&x->wait.lock, flags); |
| 1967 | |
| 1968 | return recovery_complete ? -EIO : -EAGAIN; |
| 1969 | } |
Ben Gamari | ffed1d0 | 2009-09-14 17:48:41 -0400 | [diff] [blame] | 1970 | |
Chris Wilson | 5d97eb6 | 2010-11-10 20:40:02 +0000 | [diff] [blame] | 1971 | if (seqno == ring->outstanding_lazy_request) { |
Chris Wilson | 3cce469 | 2010-10-27 16:11:02 +0100 | [diff] [blame] | 1972 | struct drm_i915_gem_request *request; |
| 1973 | |
| 1974 | request = kzalloc(sizeof(*request), GFP_KERNEL); |
| 1975 | if (request == NULL) |
Daniel Vetter | e35a41d | 2010-02-11 22:13:59 +0100 | [diff] [blame] | 1976 | return -ENOMEM; |
Chris Wilson | 3cce469 | 2010-10-27 16:11:02 +0100 | [diff] [blame] | 1977 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1978 | ret = i915_add_request(ring, NULL, request); |
Chris Wilson | 3cce469 | 2010-10-27 16:11:02 +0100 | [diff] [blame] | 1979 | if (ret) { |
| 1980 | kfree(request); |
| 1981 | return ret; |
| 1982 | } |
| 1983 | |
| 1984 | seqno = request->seqno; |
Daniel Vetter | e35a41d | 2010-02-11 22:13:59 +0100 | [diff] [blame] | 1985 | } |
| 1986 | |
Chris Wilson | 78501ea | 2010-10-27 12:18:21 +0100 | [diff] [blame] | 1987 | if (!i915_seqno_passed(ring->get_seqno(ring), seqno)) { |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1988 | if (HAS_PCH_SPLIT(ring->dev)) |
Zhenyu Wang | 036a4a7 | 2009-06-08 14:40:19 +0800 | [diff] [blame] | 1989 | ier = I915_READ(DEIER) | I915_READ(GTIER); |
| 1990 | else |
| 1991 | ier = I915_READ(IER); |
Jesse Barnes | 802c7eb | 2009-05-05 16:03:48 -0700 | [diff] [blame] | 1992 | if (!ier) { |
| 1993 | DRM_ERROR("something (likely vbetool) disabled " |
| 1994 | "interrupts, re-enabling\n"); |
Chris Wilson | f01c22f | 2011-06-28 11:48:51 +0100 | [diff] [blame] | 1995 | ring->dev->driver->irq_preinstall(ring->dev); |
| 1996 | ring->dev->driver->irq_postinstall(ring->dev); |
Jesse Barnes | 802c7eb | 2009-05-05 16:03:48 -0700 | [diff] [blame] | 1997 | } |
| 1998 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1999 | trace_i915_gem_request_wait_begin(ring, seqno); |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2000 | |
Chris Wilson | b222349 | 2010-10-27 15:27:33 +0100 | [diff] [blame] | 2001 | ring->waiting_seqno = seqno; |
Chris Wilson | b13c2b9 | 2010-12-13 16:54:50 +0000 | [diff] [blame] | 2002 | if (ring->irq_get(ring)) { |
Chris Wilson | ce453d8 | 2011-02-21 14:43:56 +0000 | [diff] [blame] | 2003 | if (dev_priv->mm.interruptible) |
Chris Wilson | b13c2b9 | 2010-12-13 16:54:50 +0000 | [diff] [blame] | 2004 | ret = wait_event_interruptible(ring->irq_queue, |
| 2005 | i915_seqno_passed(ring->get_seqno(ring), seqno) |
| 2006 | || atomic_read(&dev_priv->mm.wedged)); |
| 2007 | else |
| 2008 | wait_event(ring->irq_queue, |
| 2009 | i915_seqno_passed(ring->get_seqno(ring), seqno) |
| 2010 | || atomic_read(&dev_priv->mm.wedged)); |
Daniel Vetter | 48764bf | 2009-09-15 22:57:32 +0200 | [diff] [blame] | 2011 | |
Chris Wilson | b13c2b9 | 2010-12-13 16:54:50 +0000 | [diff] [blame] | 2012 | ring->irq_put(ring); |
Eric Anholt | e959b5d | 2011-12-22 14:55:01 -0800 | [diff] [blame] | 2013 | } else if (wait_for_atomic(i915_seqno_passed(ring->get_seqno(ring), |
| 2014 | seqno) || |
| 2015 | atomic_read(&dev_priv->mm.wedged), 3000)) |
Chris Wilson | b5ba177 | 2010-12-14 12:17:15 +0000 | [diff] [blame] | 2016 | ret = -EBUSY; |
Chris Wilson | b222349 | 2010-10-27 15:27:33 +0100 | [diff] [blame] | 2017 | ring->waiting_seqno = 0; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2018 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2019 | trace_i915_gem_request_wait_end(ring, seqno); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2020 | } |
Ben Gamari | ba1234d | 2009-09-14 17:48:47 -0400 | [diff] [blame] | 2021 | if (atomic_read(&dev_priv->mm.wedged)) |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 2022 | ret = -EAGAIN; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2023 | |
| 2024 | if (ret && ret != -ERESTARTSYS) |
Daniel Vetter | 8bff917 | 2010-02-11 22:19:40 +0100 | [diff] [blame] | 2025 | DRM_ERROR("%s returns %d (awaiting %d at %d, next %d)\n", |
Chris Wilson | 78501ea | 2010-10-27 12:18:21 +0100 | [diff] [blame] | 2026 | __func__, ret, seqno, ring->get_seqno(ring), |
Daniel Vetter | 8bff917 | 2010-02-11 22:19:40 +0100 | [diff] [blame] | 2027 | dev_priv->next_seqno); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2028 | |
| 2029 | /* Directly dispatch request retiring. While we have the work queue |
| 2030 | * to handle this, the waiter on a request often wants an associated |
| 2031 | * buffer to have made it to the inactive list, and we would need |
| 2032 | * a separate wait queue to handle that. |
| 2033 | */ |
Ben Widawsky | b93f9cf | 2012-01-25 15:39:34 -0800 | [diff] [blame] | 2034 | if (ret == 0 && do_retire) |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2035 | i915_gem_retire_requests_ring(ring); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2036 | |
| 2037 | return ret; |
| 2038 | } |
| 2039 | |
Daniel Vetter | 48764bf | 2009-09-15 22:57:32 +0200 | [diff] [blame] | 2040 | /** |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2041 | * Ensures that all rendering to the object has completed and the object is |
| 2042 | * safe to unbind from the GTT or access from the CPU. |
| 2043 | */ |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 2044 | int |
Chris Wilson | ce453d8 | 2011-02-21 14:43:56 +0000 | [diff] [blame] | 2045 | i915_gem_object_wait_rendering(struct drm_i915_gem_object *obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2046 | { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2047 | int ret; |
| 2048 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2049 | /* This function only exists to support waiting for existing rendering, |
| 2050 | * not for emitting required flushes. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2051 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2052 | BUG_ON((obj->base.write_domain & I915_GEM_GPU_DOMAINS) != 0); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2053 | |
| 2054 | /* If there is rendering queued on the buffer being evicted, wait for |
| 2055 | * it. |
| 2056 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2057 | if (obj->active) { |
Ben Widawsky | b93f9cf | 2012-01-25 15:39:34 -0800 | [diff] [blame] | 2058 | ret = i915_wait_request(obj->ring, obj->last_rendering_seqno, |
| 2059 | true); |
Chris Wilson | 2cf34d7 | 2010-09-14 13:03:28 +0100 | [diff] [blame] | 2060 | if (ret) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2061 | return ret; |
| 2062 | } |
| 2063 | |
| 2064 | return 0; |
| 2065 | } |
| 2066 | |
Chris Wilson | b5ffc9b | 2011-04-13 22:06:03 +0100 | [diff] [blame] | 2067 | static void i915_gem_object_finish_gtt(struct drm_i915_gem_object *obj) |
| 2068 | { |
| 2069 | u32 old_write_domain, old_read_domains; |
| 2070 | |
Chris Wilson | b5ffc9b | 2011-04-13 22:06:03 +0100 | [diff] [blame] | 2071 | /* Act a barrier for all accesses through the GTT */ |
| 2072 | mb(); |
| 2073 | |
| 2074 | /* Force a pagefault for domain tracking on next user access */ |
| 2075 | i915_gem_release_mmap(obj); |
| 2076 | |
Keith Packard | b97c3d9 | 2011-06-24 21:02:59 -0700 | [diff] [blame] | 2077 | if ((obj->base.read_domains & I915_GEM_DOMAIN_GTT) == 0) |
| 2078 | return; |
| 2079 | |
Chris Wilson | b5ffc9b | 2011-04-13 22:06:03 +0100 | [diff] [blame] | 2080 | old_read_domains = obj->base.read_domains; |
| 2081 | old_write_domain = obj->base.write_domain; |
| 2082 | |
| 2083 | obj->base.read_domains &= ~I915_GEM_DOMAIN_GTT; |
| 2084 | obj->base.write_domain &= ~I915_GEM_DOMAIN_GTT; |
| 2085 | |
| 2086 | trace_i915_gem_object_change_domain(obj, |
| 2087 | old_read_domains, |
| 2088 | old_write_domain); |
| 2089 | } |
| 2090 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2091 | /** |
| 2092 | * Unbinds an object from the GTT aperture. |
| 2093 | */ |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 2094 | int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2095 | i915_gem_object_unbind(struct drm_i915_gem_object *obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2096 | { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2097 | int ret = 0; |
| 2098 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2099 | if (obj->gtt_space == NULL) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2100 | return 0; |
| 2101 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2102 | if (obj->pin_count != 0) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2103 | DRM_ERROR("Attempting to unbind pinned buffer\n"); |
| 2104 | return -EINVAL; |
| 2105 | } |
| 2106 | |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 2107 | ret = i915_gem_object_finish_gpu(obj); |
Chris Wilson | 8dc1775 | 2010-07-23 23:18:51 +0100 | [diff] [blame] | 2108 | if (ret == -ERESTARTSYS) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2109 | return ret; |
Chris Wilson | 8dc1775 | 2010-07-23 23:18:51 +0100 | [diff] [blame] | 2110 | /* Continue on if we fail due to EIO, the GPU is hung so we |
| 2111 | * should be safe and we need to cleanup or else we might |
| 2112 | * cause memory corruption through use-after-free. |
| 2113 | */ |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 2114 | |
Chris Wilson | b5ffc9b | 2011-04-13 22:06:03 +0100 | [diff] [blame] | 2115 | i915_gem_object_finish_gtt(obj); |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 2116 | |
| 2117 | /* Move the object to the CPU domain to ensure that |
| 2118 | * any possible CPU writes while it's not in the GTT |
| 2119 | * are flushed when we go to remap it. |
| 2120 | */ |
| 2121 | if (ret == 0) |
| 2122 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
| 2123 | if (ret == -ERESTARTSYS) |
| 2124 | return ret; |
Chris Wilson | 812ed492 | 2010-09-30 15:08:57 +0100 | [diff] [blame] | 2125 | if (ret) { |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 2126 | /* In the event of a disaster, abandon all caches and |
| 2127 | * hope for the best. |
| 2128 | */ |
Chris Wilson | 812ed492 | 2010-09-30 15:08:57 +0100 | [diff] [blame] | 2129 | i915_gem_clflush_object(obj); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2130 | obj->base.read_domains = obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
Chris Wilson | 812ed492 | 2010-09-30 15:08:57 +0100 | [diff] [blame] | 2131 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2132 | |
Daniel Vetter | 96b47b6 | 2009-12-15 17:50:00 +0100 | [diff] [blame] | 2133 | /* release the fence reg _after_ flushing */ |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2134 | ret = i915_gem_object_put_fence(obj); |
| 2135 | if (ret == -ERESTARTSYS) |
| 2136 | return ret; |
Daniel Vetter | 96b47b6 | 2009-12-15 17:50:00 +0100 | [diff] [blame] | 2137 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2138 | trace_i915_gem_object_unbind(obj); |
| 2139 | |
Daniel Vetter | 7c2e6fd | 2010-11-06 10:10:47 +0100 | [diff] [blame] | 2140 | i915_gem_gtt_unbind_object(obj); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 2141 | i915_gem_object_put_pages_gtt(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2142 | |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 2143 | list_del_init(&obj->gtt_list); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2144 | list_del_init(&obj->mm_list); |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2145 | /* Avoid an unnecessary call to unbind on rebind. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2146 | obj->map_and_fenceable = true; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2147 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2148 | drm_mm_put_block(obj->gtt_space); |
| 2149 | obj->gtt_space = NULL; |
| 2150 | obj->gtt_offset = 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2151 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2152 | if (i915_gem_object_is_purgeable(obj)) |
Chris Wilson | 963b483 | 2009-09-20 23:03:54 +0100 | [diff] [blame] | 2153 | i915_gem_object_truncate(obj); |
| 2154 | |
Chris Wilson | 8dc1775 | 2010-07-23 23:18:51 +0100 | [diff] [blame] | 2155 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2156 | } |
| 2157 | |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 2158 | int |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2159 | i915_gem_flush_ring(struct intel_ring_buffer *ring, |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 2160 | uint32_t invalidate_domains, |
| 2161 | uint32_t flush_domains) |
| 2162 | { |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 2163 | int ret; |
| 2164 | |
Chris Wilson | 36d527d | 2011-03-19 22:26:49 +0000 | [diff] [blame] | 2165 | if (((invalidate_domains | flush_domains) & I915_GEM_GPU_DOMAINS) == 0) |
| 2166 | return 0; |
| 2167 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2168 | trace_i915_gem_ring_flush(ring, invalidate_domains, flush_domains); |
| 2169 | |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 2170 | ret = ring->flush(ring, invalidate_domains, flush_domains); |
| 2171 | if (ret) |
| 2172 | return ret; |
| 2173 | |
Chris Wilson | 36d527d | 2011-03-19 22:26:49 +0000 | [diff] [blame] | 2174 | if (flush_domains & I915_GEM_GPU_DOMAINS) |
| 2175 | i915_gem_process_flushing_list(ring, flush_domains); |
| 2176 | |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 2177 | return 0; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 2178 | } |
| 2179 | |
Ben Widawsky | b93f9cf | 2012-01-25 15:39:34 -0800 | [diff] [blame] | 2180 | static int i915_ring_idle(struct intel_ring_buffer *ring, bool do_retire) |
Chris Wilson | a56ba56 | 2010-09-28 10:07:56 +0100 | [diff] [blame] | 2181 | { |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 2182 | int ret; |
| 2183 | |
Chris Wilson | 395b70b | 2010-10-28 21:28:46 +0100 | [diff] [blame] | 2184 | if (list_empty(&ring->gpu_write_list) && list_empty(&ring->active_list)) |
Chris Wilson | 6419340 | 2010-10-24 12:38:05 +0100 | [diff] [blame] | 2185 | return 0; |
| 2186 | |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 2187 | if (!list_empty(&ring->gpu_write_list)) { |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2188 | ret = i915_gem_flush_ring(ring, |
Chris Wilson | 0ac74c6 | 2010-12-06 14:36:02 +0000 | [diff] [blame] | 2189 | I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 2190 | if (ret) |
| 2191 | return ret; |
| 2192 | } |
| 2193 | |
Ben Widawsky | b93f9cf | 2012-01-25 15:39:34 -0800 | [diff] [blame] | 2194 | return i915_wait_request(ring, i915_gem_next_request_seqno(ring), |
| 2195 | do_retire); |
Chris Wilson | a56ba56 | 2010-09-28 10:07:56 +0100 | [diff] [blame] | 2196 | } |
| 2197 | |
Ben Widawsky | b93f9cf | 2012-01-25 15:39:34 -0800 | [diff] [blame] | 2198 | int i915_gpu_idle(struct drm_device *dev, bool do_retire) |
Daniel Vetter | 4df2faf | 2010-02-19 11:52:00 +0100 | [diff] [blame] | 2199 | { |
| 2200 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2201 | int ret, i; |
Daniel Vetter | 4df2faf | 2010-02-19 11:52:00 +0100 | [diff] [blame] | 2202 | |
Daniel Vetter | 4df2faf | 2010-02-19 11:52:00 +0100 | [diff] [blame] | 2203 | /* Flush everything onto the inactive list. */ |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2204 | for (i = 0; i < I915_NUM_RINGS; i++) { |
Ben Widawsky | b93f9cf | 2012-01-25 15:39:34 -0800 | [diff] [blame] | 2205 | ret = i915_ring_idle(&dev_priv->ring[i], do_retire); |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2206 | if (ret) |
| 2207 | return ret; |
| 2208 | } |
Zou Nan hai | d1b851f | 2010-05-21 09:08:57 +0800 | [diff] [blame] | 2209 | |
Daniel Vetter | 8a1a49f | 2010-02-11 22:29:04 +0100 | [diff] [blame] | 2210 | return 0; |
Daniel Vetter | 4df2faf | 2010-02-19 11:52:00 +0100 | [diff] [blame] | 2211 | } |
| 2212 | |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2213 | static int sandybridge_write_fence_reg(struct drm_i915_gem_object *obj, |
| 2214 | struct intel_ring_buffer *pipelined) |
Eric Anholt | 4e901fd | 2009-10-26 16:44:17 -0700 | [diff] [blame] | 2215 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2216 | struct drm_device *dev = obj->base.dev; |
Eric Anholt | 4e901fd | 2009-10-26 16:44:17 -0700 | [diff] [blame] | 2217 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2218 | u32 size = obj->gtt_space->size; |
| 2219 | int regnum = obj->fence_reg; |
Eric Anholt | 4e901fd | 2009-10-26 16:44:17 -0700 | [diff] [blame] | 2220 | uint64_t val; |
| 2221 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2222 | val = (uint64_t)((obj->gtt_offset + size - 4096) & |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2223 | 0xfffff000) << 32; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2224 | val |= obj->gtt_offset & 0xfffff000; |
| 2225 | val |= (uint64_t)((obj->stride / 128) - 1) << |
Eric Anholt | 4e901fd | 2009-10-26 16:44:17 -0700 | [diff] [blame] | 2226 | SANDYBRIDGE_FENCE_PITCH_SHIFT; |
| 2227 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2228 | if (obj->tiling_mode == I915_TILING_Y) |
Eric Anholt | 4e901fd | 2009-10-26 16:44:17 -0700 | [diff] [blame] | 2229 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; |
| 2230 | val |= I965_FENCE_REG_VALID; |
| 2231 | |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2232 | if (pipelined) { |
| 2233 | int ret = intel_ring_begin(pipelined, 6); |
| 2234 | if (ret) |
| 2235 | return ret; |
| 2236 | |
| 2237 | intel_ring_emit(pipelined, MI_NOOP); |
| 2238 | intel_ring_emit(pipelined, MI_LOAD_REGISTER_IMM(2)); |
| 2239 | intel_ring_emit(pipelined, FENCE_REG_SANDYBRIDGE_0 + regnum*8); |
| 2240 | intel_ring_emit(pipelined, (u32)val); |
| 2241 | intel_ring_emit(pipelined, FENCE_REG_SANDYBRIDGE_0 + regnum*8 + 4); |
| 2242 | intel_ring_emit(pipelined, (u32)(val >> 32)); |
| 2243 | intel_ring_advance(pipelined); |
| 2244 | } else |
| 2245 | I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + regnum * 8, val); |
| 2246 | |
| 2247 | return 0; |
Eric Anholt | 4e901fd | 2009-10-26 16:44:17 -0700 | [diff] [blame] | 2248 | } |
| 2249 | |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2250 | static int i965_write_fence_reg(struct drm_i915_gem_object *obj, |
| 2251 | struct intel_ring_buffer *pipelined) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2252 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2253 | struct drm_device *dev = obj->base.dev; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2254 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2255 | u32 size = obj->gtt_space->size; |
| 2256 | int regnum = obj->fence_reg; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2257 | uint64_t val; |
| 2258 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2259 | val = (uint64_t)((obj->gtt_offset + size - 4096) & |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2260 | 0xfffff000) << 32; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2261 | val |= obj->gtt_offset & 0xfffff000; |
| 2262 | val |= ((obj->stride / 128) - 1) << I965_FENCE_PITCH_SHIFT; |
| 2263 | if (obj->tiling_mode == I915_TILING_Y) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2264 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; |
| 2265 | val |= I965_FENCE_REG_VALID; |
| 2266 | |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2267 | if (pipelined) { |
| 2268 | int ret = intel_ring_begin(pipelined, 6); |
| 2269 | if (ret) |
| 2270 | return ret; |
| 2271 | |
| 2272 | intel_ring_emit(pipelined, MI_NOOP); |
| 2273 | intel_ring_emit(pipelined, MI_LOAD_REGISTER_IMM(2)); |
| 2274 | intel_ring_emit(pipelined, FENCE_REG_965_0 + regnum*8); |
| 2275 | intel_ring_emit(pipelined, (u32)val); |
| 2276 | intel_ring_emit(pipelined, FENCE_REG_965_0 + regnum*8 + 4); |
| 2277 | intel_ring_emit(pipelined, (u32)(val >> 32)); |
| 2278 | intel_ring_advance(pipelined); |
| 2279 | } else |
| 2280 | I915_WRITE64(FENCE_REG_965_0 + regnum * 8, val); |
| 2281 | |
| 2282 | return 0; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2283 | } |
| 2284 | |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2285 | static int i915_write_fence_reg(struct drm_i915_gem_object *obj, |
| 2286 | struct intel_ring_buffer *pipelined) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2287 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2288 | struct drm_device *dev = obj->base.dev; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2289 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2290 | u32 size = obj->gtt_space->size; |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2291 | u32 fence_reg, val, pitch_val; |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 2292 | int tile_width; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2293 | |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2294 | if (WARN((obj->gtt_offset & ~I915_FENCE_START_MASK) || |
| 2295 | (size & -size) != size || |
| 2296 | (obj->gtt_offset & (size - 1)), |
| 2297 | "object 0x%08x [fenceable? %d] not 1M or pot-size (0x%08x) aligned\n", |
| 2298 | obj->gtt_offset, obj->map_and_fenceable, size)) |
| 2299 | return -EINVAL; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2300 | |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2301 | if (obj->tiling_mode == I915_TILING_Y && HAS_128_BYTE_Y_TILING(dev)) |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 2302 | tile_width = 128; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2303 | else |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 2304 | tile_width = 512; |
| 2305 | |
| 2306 | /* Note: pitch better be a power of two tile widths */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2307 | pitch_val = obj->stride / tile_width; |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 2308 | pitch_val = ffs(pitch_val) - 1; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2309 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2310 | val = obj->gtt_offset; |
| 2311 | if (obj->tiling_mode == I915_TILING_Y) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2312 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 2313 | val |= I915_FENCE_SIZE_BITS(size); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2314 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; |
| 2315 | val |= I830_FENCE_REG_VALID; |
| 2316 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2317 | fence_reg = obj->fence_reg; |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 2318 | if (fence_reg < 8) |
| 2319 | fence_reg = FENCE_REG_830_0 + fence_reg * 4; |
Eric Anholt | dc529a4 | 2009-03-10 22:34:49 -0700 | [diff] [blame] | 2320 | else |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 2321 | fence_reg = FENCE_REG_945_8 + (fence_reg - 8) * 4; |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2322 | |
| 2323 | if (pipelined) { |
| 2324 | int ret = intel_ring_begin(pipelined, 4); |
| 2325 | if (ret) |
| 2326 | return ret; |
| 2327 | |
| 2328 | intel_ring_emit(pipelined, MI_NOOP); |
| 2329 | intel_ring_emit(pipelined, MI_LOAD_REGISTER_IMM(1)); |
| 2330 | intel_ring_emit(pipelined, fence_reg); |
| 2331 | intel_ring_emit(pipelined, val); |
| 2332 | intel_ring_advance(pipelined); |
| 2333 | } else |
| 2334 | I915_WRITE(fence_reg, val); |
| 2335 | |
| 2336 | return 0; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2337 | } |
| 2338 | |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2339 | static int i830_write_fence_reg(struct drm_i915_gem_object *obj, |
| 2340 | struct intel_ring_buffer *pipelined) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2341 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2342 | struct drm_device *dev = obj->base.dev; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2343 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2344 | u32 size = obj->gtt_space->size; |
| 2345 | int regnum = obj->fence_reg; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2346 | uint32_t val; |
| 2347 | uint32_t pitch_val; |
| 2348 | |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2349 | if (WARN((obj->gtt_offset & ~I830_FENCE_START_MASK) || |
| 2350 | (size & -size) != size || |
| 2351 | (obj->gtt_offset & (size - 1)), |
| 2352 | "object 0x%08x not 512K or pot-size 0x%08x aligned\n", |
| 2353 | obj->gtt_offset, size)) |
| 2354 | return -EINVAL; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2355 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2356 | pitch_val = obj->stride / 128; |
Eric Anholt | e76a16d | 2009-05-26 17:44:56 -0700 | [diff] [blame] | 2357 | pitch_val = ffs(pitch_val) - 1; |
Eric Anholt | e76a16d | 2009-05-26 17:44:56 -0700 | [diff] [blame] | 2358 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2359 | val = obj->gtt_offset; |
| 2360 | if (obj->tiling_mode == I915_TILING_Y) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2361 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2362 | val |= I830_FENCE_SIZE_BITS(size); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2363 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; |
| 2364 | val |= I830_FENCE_REG_VALID; |
| 2365 | |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2366 | if (pipelined) { |
| 2367 | int ret = intel_ring_begin(pipelined, 4); |
| 2368 | if (ret) |
| 2369 | return ret; |
| 2370 | |
| 2371 | intel_ring_emit(pipelined, MI_NOOP); |
| 2372 | intel_ring_emit(pipelined, MI_LOAD_REGISTER_IMM(1)); |
| 2373 | intel_ring_emit(pipelined, FENCE_REG_830_0 + regnum*4); |
| 2374 | intel_ring_emit(pipelined, val); |
| 2375 | intel_ring_advance(pipelined); |
| 2376 | } else |
| 2377 | I915_WRITE(FENCE_REG_830_0 + regnum * 4, val); |
| 2378 | |
| 2379 | return 0; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2380 | } |
| 2381 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2382 | static bool ring_passed_seqno(struct intel_ring_buffer *ring, u32 seqno) |
| 2383 | { |
| 2384 | return i915_seqno_passed(ring->get_seqno(ring), seqno); |
| 2385 | } |
| 2386 | |
| 2387 | static int |
| 2388 | i915_gem_object_flush_fence(struct drm_i915_gem_object *obj, |
Chris Wilson | ce453d8 | 2011-02-21 14:43:56 +0000 | [diff] [blame] | 2389 | struct intel_ring_buffer *pipelined) |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2390 | { |
| 2391 | int ret; |
| 2392 | |
| 2393 | if (obj->fenced_gpu_access) { |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 2394 | if (obj->base.write_domain & I915_GEM_GPU_DOMAINS) { |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2395 | ret = i915_gem_flush_ring(obj->last_fenced_ring, |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 2396 | 0, obj->base.write_domain); |
| 2397 | if (ret) |
| 2398 | return ret; |
| 2399 | } |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2400 | |
| 2401 | obj->fenced_gpu_access = false; |
| 2402 | } |
| 2403 | |
| 2404 | if (obj->last_fenced_seqno && pipelined != obj->last_fenced_ring) { |
| 2405 | if (!ring_passed_seqno(obj->last_fenced_ring, |
| 2406 | obj->last_fenced_seqno)) { |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2407 | ret = i915_wait_request(obj->last_fenced_ring, |
Ben Widawsky | b93f9cf | 2012-01-25 15:39:34 -0800 | [diff] [blame] | 2408 | obj->last_fenced_seqno, |
| 2409 | true); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2410 | if (ret) |
| 2411 | return ret; |
| 2412 | } |
| 2413 | |
| 2414 | obj->last_fenced_seqno = 0; |
| 2415 | obj->last_fenced_ring = NULL; |
| 2416 | } |
| 2417 | |
Chris Wilson | 63256ec | 2011-01-04 18:42:07 +0000 | [diff] [blame] | 2418 | /* Ensure that all CPU reads are completed before installing a fence |
| 2419 | * and all writes before removing the fence. |
| 2420 | */ |
| 2421 | if (obj->base.read_domains & I915_GEM_DOMAIN_GTT) |
| 2422 | mb(); |
| 2423 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2424 | return 0; |
| 2425 | } |
| 2426 | |
| 2427 | int |
| 2428 | i915_gem_object_put_fence(struct drm_i915_gem_object *obj) |
| 2429 | { |
| 2430 | int ret; |
| 2431 | |
| 2432 | if (obj->tiling_mode) |
| 2433 | i915_gem_release_mmap(obj); |
| 2434 | |
Chris Wilson | ce453d8 | 2011-02-21 14:43:56 +0000 | [diff] [blame] | 2435 | ret = i915_gem_object_flush_fence(obj, NULL); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2436 | if (ret) |
| 2437 | return ret; |
| 2438 | |
| 2439 | if (obj->fence_reg != I915_FENCE_REG_NONE) { |
| 2440 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 2441 | |
| 2442 | WARN_ON(dev_priv->fence_regs[obj->fence_reg].pin_count); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2443 | i915_gem_clear_fence_reg(obj->base.dev, |
| 2444 | &dev_priv->fence_regs[obj->fence_reg]); |
| 2445 | |
| 2446 | obj->fence_reg = I915_FENCE_REG_NONE; |
| 2447 | } |
| 2448 | |
| 2449 | return 0; |
| 2450 | } |
| 2451 | |
| 2452 | static struct drm_i915_fence_reg * |
| 2453 | i915_find_fence_reg(struct drm_device *dev, |
| 2454 | struct intel_ring_buffer *pipelined) |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2455 | { |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2456 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2457 | struct drm_i915_fence_reg *reg, *first, *avail; |
| 2458 | int i; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2459 | |
| 2460 | /* First try to find a free reg */ |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2461 | avail = NULL; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2462 | for (i = dev_priv->fence_reg_start; i < dev_priv->num_fence_regs; i++) { |
| 2463 | reg = &dev_priv->fence_regs[i]; |
| 2464 | if (!reg->obj) |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2465 | return reg; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2466 | |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 2467 | if (!reg->pin_count) |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2468 | avail = reg; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2469 | } |
| 2470 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2471 | if (avail == NULL) |
| 2472 | return NULL; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2473 | |
| 2474 | /* 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] | 2475 | avail = first = NULL; |
| 2476 | list_for_each_entry(reg, &dev_priv->mm.fence_list, lru_list) { |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 2477 | if (reg->pin_count) |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2478 | continue; |
| 2479 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2480 | if (first == NULL) |
| 2481 | first = reg; |
| 2482 | |
| 2483 | if (!pipelined || |
| 2484 | !reg->obj->last_fenced_ring || |
| 2485 | reg->obj->last_fenced_ring == pipelined) { |
| 2486 | avail = reg; |
| 2487 | break; |
| 2488 | } |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2489 | } |
| 2490 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2491 | if (avail == NULL) |
| 2492 | avail = first; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2493 | |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 2494 | return avail; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2495 | } |
| 2496 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2497 | /** |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2498 | * i915_gem_object_get_fence - set up a fence reg for an object |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2499 | * @obj: object to map through a fence reg |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2500 | * @pipelined: ring on which to queue the change, or NULL for CPU access |
| 2501 | * @interruptible: must we wait uninterruptibly for the register to retire? |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2502 | * |
| 2503 | * When mapping objects through the GTT, userspace wants to be able to write |
| 2504 | * to them without having to worry about swizzling if the object is tiled. |
| 2505 | * |
| 2506 | * This function walks the fence regs looking for a free one for @obj, |
| 2507 | * stealing one if it can't find any. |
| 2508 | * |
| 2509 | * It then sets up the reg based on the object's properties: address, pitch |
| 2510 | * and tiling format. |
| 2511 | */ |
Chris Wilson | 8c4b8c3 | 2009-06-17 22:08:52 +0100 | [diff] [blame] | 2512 | int |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2513 | i915_gem_object_get_fence(struct drm_i915_gem_object *obj, |
Chris Wilson | ce453d8 | 2011-02-21 14:43:56 +0000 | [diff] [blame] | 2514 | struct intel_ring_buffer *pipelined) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2515 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2516 | struct drm_device *dev = obj->base.dev; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 2517 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2518 | struct drm_i915_fence_reg *reg; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2519 | int ret; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2520 | |
Chris Wilson | 6bda10d | 2010-12-05 21:04:18 +0000 | [diff] [blame] | 2521 | /* XXX disable pipelining. There are bugs. Shocking. */ |
| 2522 | pipelined = NULL; |
| 2523 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2524 | /* 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] | 2525 | if (obj->fence_reg != I915_FENCE_REG_NONE) { |
| 2526 | reg = &dev_priv->fence_regs[obj->fence_reg]; |
Daniel Vetter | 007cc8a | 2010-04-28 11:02:31 +0200 | [diff] [blame] | 2527 | list_move_tail(®->lru_list, &dev_priv->mm.fence_list); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2528 | |
Chris Wilson | 29c5a58 | 2011-03-17 15:23:22 +0000 | [diff] [blame] | 2529 | if (obj->tiling_changed) { |
| 2530 | ret = i915_gem_object_flush_fence(obj, pipelined); |
| 2531 | if (ret) |
| 2532 | return ret; |
| 2533 | |
| 2534 | if (!obj->fenced_gpu_access && !obj->last_fenced_seqno) |
| 2535 | pipelined = NULL; |
| 2536 | |
| 2537 | if (pipelined) { |
| 2538 | reg->setup_seqno = |
| 2539 | i915_gem_next_request_seqno(pipelined); |
| 2540 | obj->last_fenced_seqno = reg->setup_seqno; |
| 2541 | obj->last_fenced_ring = pipelined; |
| 2542 | } |
| 2543 | |
| 2544 | goto update; |
| 2545 | } |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2546 | |
| 2547 | if (!pipelined) { |
| 2548 | if (reg->setup_seqno) { |
| 2549 | if (!ring_passed_seqno(obj->last_fenced_ring, |
| 2550 | reg->setup_seqno)) { |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2551 | ret = i915_wait_request(obj->last_fenced_ring, |
Ben Widawsky | b93f9cf | 2012-01-25 15:39:34 -0800 | [diff] [blame] | 2552 | reg->setup_seqno, |
| 2553 | true); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2554 | if (ret) |
| 2555 | return ret; |
| 2556 | } |
| 2557 | |
| 2558 | reg->setup_seqno = 0; |
| 2559 | } |
| 2560 | } else if (obj->last_fenced_ring && |
| 2561 | obj->last_fenced_ring != pipelined) { |
Chris Wilson | ce453d8 | 2011-02-21 14:43:56 +0000 | [diff] [blame] | 2562 | ret = i915_gem_object_flush_fence(obj, pipelined); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2563 | if (ret) |
| 2564 | return ret; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2565 | } |
| 2566 | |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 2567 | return 0; |
| 2568 | } |
| 2569 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2570 | reg = i915_find_fence_reg(dev, pipelined); |
| 2571 | if (reg == NULL) |
Daniel Vetter | 39965b3 | 2011-12-14 13:57:09 +0100 | [diff] [blame] | 2572 | return -EDEADLK; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2573 | |
Chris Wilson | ce453d8 | 2011-02-21 14:43:56 +0000 | [diff] [blame] | 2574 | ret = i915_gem_object_flush_fence(obj, pipelined); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2575 | if (ret) |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 2576 | return ret; |
Chris Wilson | fc7170b | 2009-02-11 14:26:46 +0000 | [diff] [blame] | 2577 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2578 | if (reg->obj) { |
| 2579 | struct drm_i915_gem_object *old = reg->obj; |
| 2580 | |
| 2581 | drm_gem_object_reference(&old->base); |
| 2582 | |
| 2583 | if (old->tiling_mode) |
| 2584 | i915_gem_release_mmap(old); |
| 2585 | |
Chris Wilson | ce453d8 | 2011-02-21 14:43:56 +0000 | [diff] [blame] | 2586 | ret = i915_gem_object_flush_fence(old, pipelined); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2587 | if (ret) { |
| 2588 | drm_gem_object_unreference(&old->base); |
| 2589 | return ret; |
| 2590 | } |
| 2591 | |
| 2592 | if (old->last_fenced_seqno == 0 && obj->last_fenced_seqno == 0) |
| 2593 | pipelined = NULL; |
| 2594 | |
| 2595 | old->fence_reg = I915_FENCE_REG_NONE; |
| 2596 | old->last_fenced_ring = pipelined; |
| 2597 | old->last_fenced_seqno = |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2598 | pipelined ? i915_gem_next_request_seqno(pipelined) : 0; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2599 | |
| 2600 | drm_gem_object_unreference(&old->base); |
| 2601 | } else if (obj->last_fenced_seqno == 0) |
| 2602 | pipelined = NULL; |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 2603 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2604 | reg->obj = obj; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2605 | list_move_tail(®->lru_list, &dev_priv->mm.fence_list); |
| 2606 | obj->fence_reg = reg - dev_priv->fence_regs; |
| 2607 | obj->last_fenced_ring = pipelined; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2608 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2609 | reg->setup_seqno = |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2610 | pipelined ? i915_gem_next_request_seqno(pipelined) : 0; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2611 | obj->last_fenced_seqno = reg->setup_seqno; |
| 2612 | |
| 2613 | update: |
| 2614 | obj->tiling_changed = false; |
Chris Wilson | e259bef | 2010-09-17 00:32:02 +0100 | [diff] [blame] | 2615 | switch (INTEL_INFO(dev)->gen) { |
Eric Anholt | 25aebfc3 | 2011-05-06 13:55:53 -0700 | [diff] [blame] | 2616 | case 7: |
Chris Wilson | e259bef | 2010-09-17 00:32:02 +0100 | [diff] [blame] | 2617 | case 6: |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2618 | ret = sandybridge_write_fence_reg(obj, pipelined); |
Chris Wilson | e259bef | 2010-09-17 00:32:02 +0100 | [diff] [blame] | 2619 | break; |
| 2620 | case 5: |
| 2621 | case 4: |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2622 | ret = i965_write_fence_reg(obj, pipelined); |
Chris Wilson | e259bef | 2010-09-17 00:32:02 +0100 | [diff] [blame] | 2623 | break; |
| 2624 | case 3: |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2625 | ret = i915_write_fence_reg(obj, pipelined); |
Chris Wilson | e259bef | 2010-09-17 00:32:02 +0100 | [diff] [blame] | 2626 | break; |
| 2627 | case 2: |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2628 | ret = i830_write_fence_reg(obj, pipelined); |
Chris Wilson | e259bef | 2010-09-17 00:32:02 +0100 | [diff] [blame] | 2629 | break; |
| 2630 | } |
Eric Anholt | d9ddcb9 | 2009-01-27 10:33:49 -0800 | [diff] [blame] | 2631 | |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 2632 | return ret; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2633 | } |
| 2634 | |
| 2635 | /** |
| 2636 | * i915_gem_clear_fence_reg - clear out fence register info |
| 2637 | * @obj: object to clear |
| 2638 | * |
| 2639 | * Zeroes out the fence register itself and clears out the associated |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2640 | * data structures in dev_priv and obj. |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2641 | */ |
| 2642 | static void |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2643 | i915_gem_clear_fence_reg(struct drm_device *dev, |
| 2644 | struct drm_i915_fence_reg *reg) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2645 | { |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 2646 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2647 | uint32_t fence_reg = reg - dev_priv->fence_regs; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2648 | |
Chris Wilson | e259bef | 2010-09-17 00:32:02 +0100 | [diff] [blame] | 2649 | switch (INTEL_INFO(dev)->gen) { |
Eric Anholt | 25aebfc3 | 2011-05-06 13:55:53 -0700 | [diff] [blame] | 2650 | case 7: |
Chris Wilson | e259bef | 2010-09-17 00:32:02 +0100 | [diff] [blame] | 2651 | case 6: |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2652 | I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + fence_reg*8, 0); |
Chris Wilson | e259bef | 2010-09-17 00:32:02 +0100 | [diff] [blame] | 2653 | break; |
| 2654 | case 5: |
| 2655 | case 4: |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2656 | I915_WRITE64(FENCE_REG_965_0 + fence_reg*8, 0); |
Chris Wilson | e259bef | 2010-09-17 00:32:02 +0100 | [diff] [blame] | 2657 | break; |
| 2658 | case 3: |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2659 | if (fence_reg >= 8) |
| 2660 | fence_reg = FENCE_REG_945_8 + (fence_reg - 8) * 4; |
Eric Anholt | dc529a4 | 2009-03-10 22:34:49 -0700 | [diff] [blame] | 2661 | else |
Chris Wilson | e259bef | 2010-09-17 00:32:02 +0100 | [diff] [blame] | 2662 | case 2: |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2663 | fence_reg = FENCE_REG_830_0 + fence_reg * 4; |
Eric Anholt | dc529a4 | 2009-03-10 22:34:49 -0700 | [diff] [blame] | 2664 | |
| 2665 | I915_WRITE(fence_reg, 0); |
Chris Wilson | e259bef | 2010-09-17 00:32:02 +0100 | [diff] [blame] | 2666 | break; |
Eric Anholt | dc529a4 | 2009-03-10 22:34:49 -0700 | [diff] [blame] | 2667 | } |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 2668 | |
Daniel Vetter | 007cc8a | 2010-04-28 11:02:31 +0200 | [diff] [blame] | 2669 | list_del_init(®->lru_list); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 2670 | reg->obj = NULL; |
| 2671 | reg->setup_seqno = 0; |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 2672 | reg->pin_count = 0; |
Chris Wilson | 52dc7d3 | 2009-06-06 09:46:01 +0100 | [diff] [blame] | 2673 | } |
| 2674 | |
| 2675 | /** |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2676 | * Finds free space in the GTT aperture and binds the object there. |
| 2677 | */ |
| 2678 | static int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2679 | i915_gem_object_bind_to_gtt(struct drm_i915_gem_object *obj, |
Daniel Vetter | 920afa7 | 2010-09-16 17:54:23 +0200 | [diff] [blame] | 2680 | unsigned alignment, |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2681 | bool map_and_fenceable) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2682 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2683 | struct drm_device *dev = obj->base.dev; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2684 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2685 | struct drm_mm_node *free_space; |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 2686 | gfp_t gfpmask = __GFP_NORETRY | __GFP_NOWARN; |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 2687 | u32 size, fence_size, fence_alignment, unfenced_alignment; |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2688 | bool mappable, fenceable; |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2689 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2690 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2691 | if (obj->madv != I915_MADV_WILLNEED) { |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 2692 | DRM_ERROR("Attempting to bind a purgeable object\n"); |
| 2693 | return -EINVAL; |
| 2694 | } |
| 2695 | |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 2696 | fence_size = i915_gem_get_gtt_size(dev, |
| 2697 | obj->base.size, |
| 2698 | obj->tiling_mode); |
| 2699 | fence_alignment = i915_gem_get_gtt_alignment(dev, |
| 2700 | obj->base.size, |
| 2701 | obj->tiling_mode); |
| 2702 | unfenced_alignment = |
| 2703 | i915_gem_get_unfenced_gtt_alignment(dev, |
| 2704 | obj->base.size, |
| 2705 | obj->tiling_mode); |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 2706 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2707 | if (alignment == 0) |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 2708 | alignment = map_and_fenceable ? fence_alignment : |
| 2709 | unfenced_alignment; |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2710 | if (map_and_fenceable && alignment & (fence_alignment - 1)) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2711 | DRM_ERROR("Invalid object alignment requested %u\n", alignment); |
| 2712 | return -EINVAL; |
| 2713 | } |
| 2714 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2715 | size = map_and_fenceable ? fence_size : obj->base.size; |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 2716 | |
Chris Wilson | 654fc60 | 2010-05-27 13:18:21 +0100 | [diff] [blame] | 2717 | /* If the object is bigger than the entire aperture, reject it early |
| 2718 | * before evicting everything in a vain attempt to find space. |
| 2719 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2720 | if (obj->base.size > |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2721 | (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] | 2722 | DRM_ERROR("Attempting to bind an object larger than the aperture\n"); |
| 2723 | return -E2BIG; |
| 2724 | } |
| 2725 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2726 | search_free: |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2727 | if (map_and_fenceable) |
Daniel Vetter | 920afa7 | 2010-09-16 17:54:23 +0200 | [diff] [blame] | 2728 | free_space = |
| 2729 | drm_mm_search_free_in_range(&dev_priv->mm.gtt_space, |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 2730 | size, alignment, 0, |
Daniel Vetter | 920afa7 | 2010-09-16 17:54:23 +0200 | [diff] [blame] | 2731 | dev_priv->mm.gtt_mappable_end, |
| 2732 | 0); |
| 2733 | else |
| 2734 | free_space = drm_mm_search_free(&dev_priv->mm.gtt_space, |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 2735 | size, alignment, 0); |
Daniel Vetter | 920afa7 | 2010-09-16 17:54:23 +0200 | [diff] [blame] | 2736 | |
| 2737 | if (free_space != NULL) { |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2738 | if (map_and_fenceable) |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2739 | obj->gtt_space = |
Daniel Vetter | 920afa7 | 2010-09-16 17:54:23 +0200 | [diff] [blame] | 2740 | drm_mm_get_block_range_generic(free_space, |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 2741 | size, alignment, 0, |
Daniel Vetter | 920afa7 | 2010-09-16 17:54:23 +0200 | [diff] [blame] | 2742 | dev_priv->mm.gtt_mappable_end, |
| 2743 | 0); |
| 2744 | else |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2745 | obj->gtt_space = |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 2746 | drm_mm_get_block(free_space, size, alignment); |
Daniel Vetter | 920afa7 | 2010-09-16 17:54:23 +0200 | [diff] [blame] | 2747 | } |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2748 | if (obj->gtt_space == NULL) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2749 | /* If the gtt is empty and we're still having trouble |
| 2750 | * fitting our object in, we're out of memory. |
| 2751 | */ |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2752 | ret = i915_gem_evict_something(dev, size, alignment, |
| 2753 | map_and_fenceable); |
Chris Wilson | 9731129 | 2009-09-21 00:22:34 +0100 | [diff] [blame] | 2754 | if (ret) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2755 | return ret; |
Chris Wilson | 9731129 | 2009-09-21 00:22:34 +0100 | [diff] [blame] | 2756 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2757 | goto search_free; |
| 2758 | } |
| 2759 | |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 2760 | ret = i915_gem_object_get_pages_gtt(obj, gfpmask); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2761 | if (ret) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2762 | drm_mm_put_block(obj->gtt_space); |
| 2763 | obj->gtt_space = NULL; |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2764 | |
| 2765 | if (ret == -ENOMEM) { |
Chris Wilson | 809b633 | 2011-01-10 17:33:15 +0000 | [diff] [blame] | 2766 | /* first try to reclaim some memory by clearing the GTT */ |
| 2767 | ret = i915_gem_evict_everything(dev, false); |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2768 | if (ret) { |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2769 | /* now try to shrink everyone else */ |
Chris Wilson | 4bdadb9 | 2010-01-27 13:36:32 +0000 | [diff] [blame] | 2770 | if (gfpmask) { |
| 2771 | gfpmask = 0; |
| 2772 | goto search_free; |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2773 | } |
| 2774 | |
Chris Wilson | 809b633 | 2011-01-10 17:33:15 +0000 | [diff] [blame] | 2775 | return -ENOMEM; |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2776 | } |
| 2777 | |
| 2778 | goto search_free; |
| 2779 | } |
| 2780 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2781 | return ret; |
| 2782 | } |
| 2783 | |
Daniel Vetter | 7c2e6fd | 2010-11-06 10:10:47 +0100 | [diff] [blame] | 2784 | ret = i915_gem_gtt_bind_object(obj); |
| 2785 | if (ret) { |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 2786 | i915_gem_object_put_pages_gtt(obj); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2787 | drm_mm_put_block(obj->gtt_space); |
| 2788 | obj->gtt_space = NULL; |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2789 | |
Chris Wilson | 809b633 | 2011-01-10 17:33:15 +0000 | [diff] [blame] | 2790 | if (i915_gem_evict_everything(dev, false)) |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2791 | return ret; |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 2792 | |
| 2793 | goto search_free; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2794 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2795 | |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 2796 | list_add_tail(&obj->gtt_list, &dev_priv->mm.gtt_list); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2797 | list_add_tail(&obj->mm_list, &dev_priv->mm.inactive_list); |
Chris Wilson | bf1a109 | 2010-08-07 11:01:20 +0100 | [diff] [blame] | 2798 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2799 | /* Assert that the object is not currently in any GPU domain. As it |
| 2800 | * wasn't in the GTT, there shouldn't be any way it could have been in |
| 2801 | * a GPU cache |
| 2802 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2803 | BUG_ON(obj->base.read_domains & I915_GEM_GPU_DOMAINS); |
| 2804 | BUG_ON(obj->base.write_domain & I915_GEM_GPU_DOMAINS); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2805 | |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 2806 | obj->gtt_offset = obj->gtt_space->start; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2807 | |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2808 | fenceable = |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2809 | obj->gtt_space->size == fence_size && |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 2810 | (obj->gtt_space->start & (fence_alignment - 1)) == 0; |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 2811 | |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2812 | mappable = |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2813 | obj->gtt_offset + obj->base.size <= dev_priv->mm.gtt_mappable_end; |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 2814 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2815 | obj->map_and_fenceable = mappable && fenceable; |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 2816 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2817 | trace_i915_gem_object_bind(obj, map_and_fenceable); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2818 | return 0; |
| 2819 | } |
| 2820 | |
| 2821 | void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2822 | i915_gem_clflush_object(struct drm_i915_gem_object *obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2823 | { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2824 | /* If we don't have a page list set up, then we're not pinned |
| 2825 | * to GPU, and we can ignore the cache flush because it'll happen |
| 2826 | * again at bind time. |
| 2827 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2828 | if (obj->pages == NULL) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2829 | return; |
| 2830 | |
Chris Wilson | 9c23f7f | 2011-03-29 16:59:52 -0700 | [diff] [blame] | 2831 | /* If the GPU is snooping the contents of the CPU cache, |
| 2832 | * we do not need to manually clear the CPU cache lines. However, |
| 2833 | * the caches are only snooped when the render cache is |
| 2834 | * flushed/invalidated. As we always have to emit invalidations |
| 2835 | * and flushes when moving into and out of the RENDER domain, correct |
| 2836 | * snooping behaviour occurs naturally as the result of our domain |
| 2837 | * tracking. |
| 2838 | */ |
| 2839 | if (obj->cache_level != I915_CACHE_NONE) |
| 2840 | return; |
| 2841 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2842 | trace_i915_gem_object_clflush(obj); |
Eric Anholt | cfa16a0 | 2009-05-26 18:46:16 -0700 | [diff] [blame] | 2843 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2844 | drm_clflush_pages(obj->pages, obj->base.size / PAGE_SIZE); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2845 | } |
| 2846 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2847 | /** Flushes any GPU write domain for the object if it's dirty. */ |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 2848 | static int |
Chris Wilson | 3619df0 | 2010-11-28 15:37:17 +0000 | [diff] [blame] | 2849 | i915_gem_object_flush_gpu_write_domain(struct drm_i915_gem_object *obj) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2850 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2851 | if ((obj->base.write_domain & I915_GEM_GPU_DOMAINS) == 0) |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 2852 | return 0; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2853 | |
| 2854 | /* Queue the GPU write cache flushing we need. */ |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2855 | return i915_gem_flush_ring(obj->ring, 0, obj->base.write_domain); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2856 | } |
| 2857 | |
| 2858 | /** Flushes the GTT write domain for the object if it's dirty. */ |
| 2859 | static void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2860 | 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] | 2861 | { |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2862 | uint32_t old_write_domain; |
| 2863 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2864 | if (obj->base.write_domain != I915_GEM_DOMAIN_GTT) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2865 | return; |
| 2866 | |
Chris Wilson | 63256ec | 2011-01-04 18:42:07 +0000 | [diff] [blame] | 2867 | /* No actual flushing is required for the GTT write domain. Writes |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2868 | * to it immediately go to main memory as far as we know, so there's |
| 2869 | * no chipset flush. It also doesn't land in render cache. |
Chris Wilson | 63256ec | 2011-01-04 18:42:07 +0000 | [diff] [blame] | 2870 | * |
| 2871 | * However, we do have to enforce the order so that all writes through |
| 2872 | * the GTT land before any writes to the device, such as updates to |
| 2873 | * the GATT itself. |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2874 | */ |
Chris Wilson | 63256ec | 2011-01-04 18:42:07 +0000 | [diff] [blame] | 2875 | wmb(); |
| 2876 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2877 | old_write_domain = obj->base.write_domain; |
| 2878 | obj->base.write_domain = 0; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2879 | |
| 2880 | trace_i915_gem_object_change_domain(obj, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2881 | obj->base.read_domains, |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2882 | old_write_domain); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2883 | } |
| 2884 | |
| 2885 | /** Flushes the CPU write domain for the object if it's dirty. */ |
| 2886 | static void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2887 | 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] | 2888 | { |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2889 | uint32_t old_write_domain; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2890 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2891 | if (obj->base.write_domain != I915_GEM_DOMAIN_CPU) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2892 | return; |
| 2893 | |
| 2894 | i915_gem_clflush_object(obj); |
Daniel Vetter | 40ce657 | 2010-11-05 18:12:18 +0100 | [diff] [blame] | 2895 | intel_gtt_chipset_flush(); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2896 | old_write_domain = obj->base.write_domain; |
| 2897 | obj->base.write_domain = 0; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2898 | |
| 2899 | trace_i915_gem_object_change_domain(obj, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2900 | obj->base.read_domains, |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2901 | old_write_domain); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2902 | } |
| 2903 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 2904 | /** |
| 2905 | * Moves a single object to the GTT read, and possibly write domain. |
| 2906 | * |
| 2907 | * This function returns when the move is complete, including waiting on |
| 2908 | * flushes to occur. |
| 2909 | */ |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 2910 | int |
Chris Wilson | 2021746 | 2010-11-23 15:26:33 +0000 | [diff] [blame] | 2911 | 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] | 2912 | { |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2913 | uint32_t old_write_domain, old_read_domains; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2914 | int ret; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 2915 | |
Eric Anholt | 0235439 | 2008-11-26 13:58:13 -0800 | [diff] [blame] | 2916 | /* Not valid to be called on unbound objects. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2917 | if (obj->gtt_space == NULL) |
Eric Anholt | 0235439 | 2008-11-26 13:58:13 -0800 | [diff] [blame] | 2918 | return -EINVAL; |
| 2919 | |
Chris Wilson | 8d7e3de | 2011-02-07 15:23:02 +0000 | [diff] [blame] | 2920 | if (obj->base.write_domain == I915_GEM_DOMAIN_GTT) |
| 2921 | return 0; |
| 2922 | |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 2923 | ret = i915_gem_object_flush_gpu_write_domain(obj); |
| 2924 | if (ret) |
| 2925 | return ret; |
| 2926 | |
Chris Wilson | 87ca9c8 | 2010-12-02 09:42:56 +0000 | [diff] [blame] | 2927 | if (obj->pending_gpu_write || write) { |
Chris Wilson | ce453d8 | 2011-02-21 14:43:56 +0000 | [diff] [blame] | 2928 | ret = i915_gem_object_wait_rendering(obj); |
Chris Wilson | 87ca9c8 | 2010-12-02 09:42:56 +0000 | [diff] [blame] | 2929 | if (ret) |
| 2930 | return ret; |
| 2931 | } |
Chris Wilson | 2dafb1e | 2010-06-07 14:03:05 +0100 | [diff] [blame] | 2932 | |
Chris Wilson | 7213342 | 2010-09-13 23:56:38 +0100 | [diff] [blame] | 2933 | i915_gem_object_flush_cpu_write_domain(obj); |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2934 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2935 | old_write_domain = obj->base.write_domain; |
| 2936 | old_read_domains = obj->base.read_domains; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 2937 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 2938 | /* It should now be out of any other write domains, and we can update |
| 2939 | * the domain values for our changes. |
| 2940 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2941 | BUG_ON((obj->base.write_domain & ~I915_GEM_DOMAIN_GTT) != 0); |
| 2942 | obj->base.read_domains |= I915_GEM_DOMAIN_GTT; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2943 | if (write) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2944 | obj->base.read_domains = I915_GEM_DOMAIN_GTT; |
| 2945 | obj->base.write_domain = I915_GEM_DOMAIN_GTT; |
| 2946 | obj->dirty = 1; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2947 | } |
| 2948 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2949 | trace_i915_gem_object_change_domain(obj, |
| 2950 | old_read_domains, |
| 2951 | old_write_domain); |
| 2952 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 2953 | return 0; |
| 2954 | } |
| 2955 | |
Chris Wilson | e4ffd17 | 2011-04-04 09:44:39 +0100 | [diff] [blame] | 2956 | int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj, |
| 2957 | enum i915_cache_level cache_level) |
| 2958 | { |
| 2959 | int ret; |
| 2960 | |
| 2961 | if (obj->cache_level == cache_level) |
| 2962 | return 0; |
| 2963 | |
| 2964 | if (obj->pin_count) { |
| 2965 | DRM_DEBUG("can not change the cache level of pinned objects\n"); |
| 2966 | return -EBUSY; |
| 2967 | } |
| 2968 | |
| 2969 | if (obj->gtt_space) { |
| 2970 | ret = i915_gem_object_finish_gpu(obj); |
| 2971 | if (ret) |
| 2972 | return ret; |
| 2973 | |
| 2974 | i915_gem_object_finish_gtt(obj); |
| 2975 | |
| 2976 | /* Before SandyBridge, you could not use tiling or fence |
| 2977 | * registers with snooped memory, so relinquish any fences |
| 2978 | * currently pointing to our region in the aperture. |
| 2979 | */ |
| 2980 | if (INTEL_INFO(obj->base.dev)->gen < 6) { |
| 2981 | ret = i915_gem_object_put_fence(obj); |
| 2982 | if (ret) |
| 2983 | return ret; |
| 2984 | } |
| 2985 | |
| 2986 | i915_gem_gtt_rebind_object(obj, cache_level); |
| 2987 | } |
| 2988 | |
| 2989 | if (cache_level == I915_CACHE_NONE) { |
| 2990 | u32 old_read_domains, old_write_domain; |
| 2991 | |
| 2992 | /* If we're coming from LLC cached, then we haven't |
| 2993 | * actually been tracking whether the data is in the |
| 2994 | * CPU cache or not, since we only allow one bit set |
| 2995 | * in obj->write_domain and have been skipping the clflushes. |
| 2996 | * Just set it to the CPU cache for now. |
| 2997 | */ |
| 2998 | WARN_ON(obj->base.write_domain & ~I915_GEM_DOMAIN_CPU); |
| 2999 | WARN_ON(obj->base.read_domains & ~I915_GEM_DOMAIN_CPU); |
| 3000 | |
| 3001 | old_read_domains = obj->base.read_domains; |
| 3002 | old_write_domain = obj->base.write_domain; |
| 3003 | |
| 3004 | obj->base.read_domains = I915_GEM_DOMAIN_CPU; |
| 3005 | obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
| 3006 | |
| 3007 | trace_i915_gem_object_change_domain(obj, |
| 3008 | old_read_domains, |
| 3009 | old_write_domain); |
| 3010 | } |
| 3011 | |
| 3012 | obj->cache_level = cache_level; |
| 3013 | return 0; |
| 3014 | } |
| 3015 | |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3016 | /* |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3017 | * Prepare buffer for display plane (scanout, cursors, etc). |
| 3018 | * Can be called from an uninterruptible phase (modesetting) and allows |
| 3019 | * any flushes to be pipelined (for pageflips). |
| 3020 | * |
| 3021 | * For the display plane, we want to be in the GTT but out of any write |
| 3022 | * domains. So in many ways this looks like set_to_gtt_domain() apart from the |
| 3023 | * ability to pipeline the waits, pinning and any additional subtleties |
| 3024 | * that may differentiate the display plane from ordinary buffers. |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3025 | */ |
| 3026 | int |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3027 | i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj, |
| 3028 | u32 alignment, |
Chris Wilson | 919926a | 2010-11-12 13:42:53 +0000 | [diff] [blame] | 3029 | struct intel_ring_buffer *pipelined) |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3030 | { |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3031 | u32 old_read_domains, old_write_domain; |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3032 | int ret; |
| 3033 | |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 3034 | ret = i915_gem_object_flush_gpu_write_domain(obj); |
| 3035 | if (ret) |
| 3036 | return ret; |
| 3037 | |
Chris Wilson | 0be7328 | 2010-12-06 14:36:27 +0000 | [diff] [blame] | 3038 | if (pipelined != obj->ring) { |
Chris Wilson | ce453d8 | 2011-02-21 14:43:56 +0000 | [diff] [blame] | 3039 | ret = i915_gem_object_wait_rendering(obj); |
Keith Packard | f0b69ef | 2011-07-19 16:21:40 -0700 | [diff] [blame] | 3040 | if (ret == -ERESTARTSYS) |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3041 | return ret; |
| 3042 | } |
| 3043 | |
Eric Anholt | a7ef064 | 2011-03-29 16:59:54 -0700 | [diff] [blame] | 3044 | /* The display engine is not coherent with the LLC cache on gen6. As |
| 3045 | * a result, we make sure that the pinning that is about to occur is |
| 3046 | * done with uncached PTEs. This is lowest common denominator for all |
| 3047 | * chipsets. |
| 3048 | * |
| 3049 | * However for gen6+, we could do better by using the GFDT bit instead |
| 3050 | * of uncaching, which would allow us to flush all the LLC-cached data |
| 3051 | * with that bit in the PTE to main memory with just one PIPE_CONTROL. |
| 3052 | */ |
| 3053 | ret = i915_gem_object_set_cache_level(obj, I915_CACHE_NONE); |
| 3054 | if (ret) |
| 3055 | return ret; |
| 3056 | |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3057 | /* As the user may map the buffer once pinned in the display plane |
| 3058 | * (e.g. libkms for the bootup splash), we have to ensure that we |
| 3059 | * always use map_and_fenceable for all scanout buffers. |
| 3060 | */ |
| 3061 | ret = i915_gem_object_pin(obj, alignment, true); |
| 3062 | if (ret) |
| 3063 | return ret; |
| 3064 | |
Chris Wilson | b118c1e | 2010-05-27 13:18:14 +0100 | [diff] [blame] | 3065 | i915_gem_object_flush_cpu_write_domain(obj); |
| 3066 | |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3067 | old_write_domain = obj->base.write_domain; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3068 | old_read_domains = obj->base.read_domains; |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3069 | |
| 3070 | /* It should now be out of any other write domains, and we can update |
| 3071 | * the domain values for our changes. |
| 3072 | */ |
| 3073 | BUG_ON((obj->base.write_domain & ~I915_GEM_DOMAIN_GTT) != 0); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3074 | obj->base.read_domains |= I915_GEM_DOMAIN_GTT; |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3075 | |
| 3076 | trace_i915_gem_object_change_domain(obj, |
| 3077 | old_read_domains, |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3078 | old_write_domain); |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3079 | |
| 3080 | return 0; |
| 3081 | } |
| 3082 | |
Chris Wilson | 8534551 | 2010-11-13 09:49:11 +0000 | [diff] [blame] | 3083 | int |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 3084 | i915_gem_object_finish_gpu(struct drm_i915_gem_object *obj) |
Chris Wilson | 8534551 | 2010-11-13 09:49:11 +0000 | [diff] [blame] | 3085 | { |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 3086 | int ret; |
| 3087 | |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 3088 | if ((obj->base.read_domains & I915_GEM_GPU_DOMAINS) == 0) |
Chris Wilson | 8534551 | 2010-11-13 09:49:11 +0000 | [diff] [blame] | 3089 | return 0; |
| 3090 | |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 3091 | if (obj->base.write_domain & I915_GEM_GPU_DOMAINS) { |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 3092 | ret = i915_gem_flush_ring(obj->ring, 0, obj->base.write_domain); |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 3093 | if (ret) |
| 3094 | return ret; |
| 3095 | } |
Chris Wilson | 8534551 | 2010-11-13 09:49:11 +0000 | [diff] [blame] | 3096 | |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 3097 | /* Ensure that we invalidate the GPU's caches and TLBs. */ |
| 3098 | obj->base.read_domains &= ~I915_GEM_GPU_DOMAINS; |
| 3099 | |
Chris Wilson | ce453d8 | 2011-02-21 14:43:56 +0000 | [diff] [blame] | 3100 | return i915_gem_object_wait_rendering(obj); |
Chris Wilson | 8534551 | 2010-11-13 09:49:11 +0000 | [diff] [blame] | 3101 | } |
| 3102 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3103 | /** |
| 3104 | * Moves a single object to the CPU read, and possibly write domain. |
| 3105 | * |
| 3106 | * This function returns when the move is complete, including waiting on |
| 3107 | * flushes to occur. |
| 3108 | */ |
| 3109 | static int |
Chris Wilson | 919926a | 2010-11-12 13:42:53 +0000 | [diff] [blame] | 3110 | 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] | 3111 | { |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3112 | uint32_t old_write_domain, old_read_domains; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3113 | int ret; |
| 3114 | |
Chris Wilson | 8d7e3de | 2011-02-07 15:23:02 +0000 | [diff] [blame] | 3115 | if (obj->base.write_domain == I915_GEM_DOMAIN_CPU) |
| 3116 | return 0; |
| 3117 | |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 3118 | ret = i915_gem_object_flush_gpu_write_domain(obj); |
| 3119 | if (ret) |
| 3120 | return ret; |
| 3121 | |
Chris Wilson | ce453d8 | 2011-02-21 14:43:56 +0000 | [diff] [blame] | 3122 | ret = i915_gem_object_wait_rendering(obj); |
Daniel Vetter | de18a29 | 2010-11-27 22:30:41 +0100 | [diff] [blame] | 3123 | if (ret) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3124 | return ret; |
| 3125 | |
| 3126 | i915_gem_object_flush_gtt_write_domain(obj); |
| 3127 | |
| 3128 | /* If we have a partially-valid cache of the object in the CPU, |
| 3129 | * finish invalidating it and free the per-page flags. |
| 3130 | */ |
| 3131 | i915_gem_object_set_to_full_cpu_read_domain(obj); |
| 3132 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3133 | old_write_domain = obj->base.write_domain; |
| 3134 | old_read_domains = obj->base.read_domains; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3135 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3136 | /* Flush the CPU cache if it's still invalid. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3137 | if ((obj->base.read_domains & I915_GEM_DOMAIN_CPU) == 0) { |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3138 | i915_gem_clflush_object(obj); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3139 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3140 | obj->base.read_domains |= I915_GEM_DOMAIN_CPU; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3141 | } |
| 3142 | |
| 3143 | /* It should now be out of any other write domains, and we can update |
| 3144 | * the domain values for our changes. |
| 3145 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3146 | BUG_ON((obj->base.write_domain & ~I915_GEM_DOMAIN_CPU) != 0); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3147 | |
| 3148 | /* If we're writing through the CPU, then the GPU read domains will |
| 3149 | * need to be invalidated at next use. |
| 3150 | */ |
| 3151 | if (write) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3152 | obj->base.read_domains = I915_GEM_DOMAIN_CPU; |
| 3153 | obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3154 | } |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 3155 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3156 | trace_i915_gem_object_change_domain(obj, |
| 3157 | old_read_domains, |
| 3158 | old_write_domain); |
| 3159 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 3160 | return 0; |
| 3161 | } |
| 3162 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3163 | /** |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3164 | * Moves the object from a partially CPU read to a full one. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3165 | * |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3166 | * Note that this only resolves i915_gem_object_set_cpu_read_domain_range(), |
| 3167 | * and doesn't handle transitioning from !(read_domains & I915_GEM_DOMAIN_CPU). |
| 3168 | */ |
| 3169 | static void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3170 | i915_gem_object_set_to_full_cpu_read_domain(struct drm_i915_gem_object *obj) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3171 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3172 | if (!obj->page_cpu_valid) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3173 | return; |
| 3174 | |
| 3175 | /* If we're partially in the CPU read domain, finish moving it in. |
| 3176 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3177 | if (obj->base.read_domains & I915_GEM_DOMAIN_CPU) { |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3178 | int i; |
| 3179 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3180 | for (i = 0; i <= (obj->base.size - 1) / PAGE_SIZE; i++) { |
| 3181 | if (obj->page_cpu_valid[i]) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3182 | continue; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3183 | drm_clflush_pages(obj->pages + i, 1); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3184 | } |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3185 | } |
| 3186 | |
| 3187 | /* Free the page_cpu_valid mappings which are now stale, whether |
| 3188 | * or not we've got I915_GEM_DOMAIN_CPU. |
| 3189 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3190 | kfree(obj->page_cpu_valid); |
| 3191 | obj->page_cpu_valid = NULL; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3192 | } |
| 3193 | |
| 3194 | /** |
| 3195 | * Set the CPU read domain on a range of the object. |
| 3196 | * |
| 3197 | * The object ends up with I915_GEM_DOMAIN_CPU in its read flags although it's |
| 3198 | * not entirely valid. The page_cpu_valid member of the object flags which |
| 3199 | * pages have been flushed, and will be respected by |
| 3200 | * i915_gem_object_set_to_cpu_domain() if it's called on to get a valid mapping |
| 3201 | * of the whole object. |
| 3202 | * |
| 3203 | * This function returns when the move is complete, including waiting on |
| 3204 | * flushes to occur. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3205 | */ |
| 3206 | static int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3207 | i915_gem_object_set_cpu_read_domain_range(struct drm_i915_gem_object *obj, |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3208 | uint64_t offset, uint64_t size) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3209 | { |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3210 | uint32_t old_read_domains; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3211 | int i, ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3212 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3213 | if (offset == 0 && size == obj->base.size) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3214 | return i915_gem_object_set_to_cpu_domain(obj, 0); |
| 3215 | |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 3216 | ret = i915_gem_object_flush_gpu_write_domain(obj); |
| 3217 | if (ret) |
| 3218 | return ret; |
| 3219 | |
Chris Wilson | ce453d8 | 2011-02-21 14:43:56 +0000 | [diff] [blame] | 3220 | ret = i915_gem_object_wait_rendering(obj); |
Daniel Vetter | de18a29 | 2010-11-27 22:30:41 +0100 | [diff] [blame] | 3221 | if (ret) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3222 | return ret; |
Daniel Vetter | de18a29 | 2010-11-27 22:30:41 +0100 | [diff] [blame] | 3223 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3224 | i915_gem_object_flush_gtt_write_domain(obj); |
| 3225 | |
| 3226 | /* If we're already fully in the CPU read domain, we're done. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3227 | if (obj->page_cpu_valid == NULL && |
| 3228 | (obj->base.read_domains & I915_GEM_DOMAIN_CPU) != 0) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3229 | return 0; |
| 3230 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3231 | /* Otherwise, create/clear the per-page CPU read domain flag if we're |
| 3232 | * newly adding I915_GEM_DOMAIN_CPU |
| 3233 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3234 | if (obj->page_cpu_valid == NULL) { |
| 3235 | obj->page_cpu_valid = kzalloc(obj->base.size / PAGE_SIZE, |
| 3236 | GFP_KERNEL); |
| 3237 | if (obj->page_cpu_valid == NULL) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3238 | return -ENOMEM; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3239 | } else if ((obj->base.read_domains & I915_GEM_DOMAIN_CPU) == 0) |
| 3240 | memset(obj->page_cpu_valid, 0, obj->base.size / PAGE_SIZE); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3241 | |
| 3242 | /* Flush the cache on any pages that are still invalid from the CPU's |
| 3243 | * perspective. |
| 3244 | */ |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3245 | for (i = offset / PAGE_SIZE; i <= (offset + size - 1) / PAGE_SIZE; |
| 3246 | i++) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3247 | if (obj->page_cpu_valid[i]) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3248 | continue; |
| 3249 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3250 | drm_clflush_pages(obj->pages + i, 1); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3251 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3252 | obj->page_cpu_valid[i] = 1; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3253 | } |
| 3254 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3255 | /* It should now be out of any other write domains, and we can update |
| 3256 | * the domain values for our changes. |
| 3257 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3258 | BUG_ON((obj->base.write_domain & ~I915_GEM_DOMAIN_CPU) != 0); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3259 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3260 | old_read_domains = obj->base.read_domains; |
| 3261 | obj->base.read_domains |= I915_GEM_DOMAIN_CPU; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3262 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3263 | trace_i915_gem_object_change_domain(obj, |
| 3264 | old_read_domains, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3265 | obj->base.write_domain); |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3266 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3267 | return 0; |
| 3268 | } |
| 3269 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3270 | /* Throttle our rendering by waiting until the ring has completed our requests |
| 3271 | * emitted over 20 msec ago. |
| 3272 | * |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 3273 | * Note that if we were to use the current jiffies each time around the loop, |
| 3274 | * we wouldn't escape the function with any frames outstanding if the time to |
| 3275 | * render a frame was over 20ms. |
| 3276 | * |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3277 | * This should get us reasonable parallelism between CPU and GPU but also |
| 3278 | * relatively low latency when blocking on a particular request to finish. |
| 3279 | */ |
| 3280 | static int |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 3281 | i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3282 | { |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 3283 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3284 | struct drm_i915_file_private *file_priv = file->driver_priv; |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 3285 | unsigned long recent_enough = jiffies - msecs_to_jiffies(20); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 3286 | struct drm_i915_gem_request *request; |
| 3287 | struct intel_ring_buffer *ring = NULL; |
| 3288 | u32 seqno = 0; |
| 3289 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3290 | |
Chris Wilson | e110e8d | 2011-01-26 15:39:14 +0000 | [diff] [blame] | 3291 | if (atomic_read(&dev_priv->mm.wedged)) |
| 3292 | return -EIO; |
| 3293 | |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 3294 | spin_lock(&file_priv->mm.lock); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 3295 | list_for_each_entry(request, &file_priv->mm.request_list, client_list) { |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 3296 | if (time_after_eq(request->emitted_jiffies, recent_enough)) |
| 3297 | break; |
| 3298 | |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 3299 | ring = request->ring; |
| 3300 | seqno = request->seqno; |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 3301 | } |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 3302 | spin_unlock(&file_priv->mm.lock); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 3303 | |
| 3304 | if (seqno == 0) |
| 3305 | return 0; |
| 3306 | |
| 3307 | ret = 0; |
Chris Wilson | 78501ea | 2010-10-27 12:18:21 +0100 | [diff] [blame] | 3308 | if (!i915_seqno_passed(ring->get_seqno(ring), seqno)) { |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 3309 | /* And wait for the seqno passing without holding any locks and |
| 3310 | * causing extra latency for others. This is safe as the irq |
| 3311 | * generation is designed to be run atomically and so is |
| 3312 | * lockless. |
| 3313 | */ |
Chris Wilson | b13c2b9 | 2010-12-13 16:54:50 +0000 | [diff] [blame] | 3314 | if (ring->irq_get(ring)) { |
| 3315 | ret = wait_event_interruptible(ring->irq_queue, |
| 3316 | i915_seqno_passed(ring->get_seqno(ring), seqno) |
| 3317 | || atomic_read(&dev_priv->mm.wedged)); |
| 3318 | ring->irq_put(ring); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 3319 | |
Chris Wilson | b13c2b9 | 2010-12-13 16:54:50 +0000 | [diff] [blame] | 3320 | if (ret == 0 && atomic_read(&dev_priv->mm.wedged)) |
| 3321 | ret = -EIO; |
Eric Anholt | e959b5d | 2011-12-22 14:55:01 -0800 | [diff] [blame] | 3322 | } else if (wait_for_atomic(i915_seqno_passed(ring->get_seqno(ring), |
| 3323 | seqno) || |
Eric Anholt | 7ea29b1 | 2011-12-22 14:54:59 -0800 | [diff] [blame] | 3324 | atomic_read(&dev_priv->mm.wedged), 3000)) { |
| 3325 | ret = -EBUSY; |
Chris Wilson | b13c2b9 | 2010-12-13 16:54:50 +0000 | [diff] [blame] | 3326 | } |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 3327 | } |
| 3328 | |
| 3329 | if (ret == 0) |
| 3330 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, 0); |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 3331 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3332 | return ret; |
| 3333 | } |
| 3334 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3335 | int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3336 | i915_gem_object_pin(struct drm_i915_gem_object *obj, |
| 3337 | uint32_t alignment, |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 3338 | bool map_and_fenceable) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3339 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3340 | struct drm_device *dev = obj->base.dev; |
Chris Wilson | f13d3f7 | 2010-09-20 17:36:15 +0100 | [diff] [blame] | 3341 | struct drm_i915_private *dev_priv = dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3342 | int ret; |
| 3343 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3344 | BUG_ON(obj->pin_count == DRM_I915_GEM_OBJECT_MAX_PIN_COUNT); |
Chris Wilson | 23bc598 | 2010-09-29 16:10:57 +0100 | [diff] [blame] | 3345 | WARN_ON(i915_verify_lists(dev)); |
Chris Wilson | ac0c6b5 | 2010-05-27 13:18:18 +0100 | [diff] [blame] | 3346 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3347 | if (obj->gtt_space != NULL) { |
| 3348 | if ((alignment && obj->gtt_offset & (alignment - 1)) || |
| 3349 | (map_and_fenceable && !obj->map_and_fenceable)) { |
| 3350 | WARN(obj->pin_count, |
Chris Wilson | ae7d49d | 2010-08-04 12:37:41 +0100 | [diff] [blame] | 3351 | "bo is already pinned with incorrect alignment:" |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 3352 | " offset=%x, req.alignment=%x, req.map_and_fenceable=%d," |
| 3353 | " obj->map_and_fenceable=%d\n", |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3354 | obj->gtt_offset, alignment, |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 3355 | map_and_fenceable, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3356 | obj->map_and_fenceable); |
Chris Wilson | ac0c6b5 | 2010-05-27 13:18:18 +0100 | [diff] [blame] | 3357 | ret = i915_gem_object_unbind(obj); |
| 3358 | if (ret) |
| 3359 | return ret; |
| 3360 | } |
| 3361 | } |
| 3362 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3363 | if (obj->gtt_space == NULL) { |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 3364 | ret = i915_gem_object_bind_to_gtt(obj, alignment, |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 3365 | map_and_fenceable); |
Chris Wilson | 9731129 | 2009-09-21 00:22:34 +0100 | [diff] [blame] | 3366 | if (ret) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3367 | return ret; |
Chris Wilson | 22c344e | 2009-02-11 14:26:45 +0000 | [diff] [blame] | 3368 | } |
Jesse Barnes | 76446ca | 2009-12-17 22:05:42 -0500 | [diff] [blame] | 3369 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3370 | if (obj->pin_count++ == 0) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3371 | if (!obj->active) |
| 3372 | list_move_tail(&obj->mm_list, |
Chris Wilson | f13d3f7 | 2010-09-20 17:36:15 +0100 | [diff] [blame] | 3373 | &dev_priv->mm.pinned_list); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3374 | } |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 3375 | obj->pin_mappable |= map_and_fenceable; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3376 | |
Chris Wilson | 23bc598 | 2010-09-29 16:10:57 +0100 | [diff] [blame] | 3377 | WARN_ON(i915_verify_lists(dev)); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3378 | return 0; |
| 3379 | } |
| 3380 | |
| 3381 | void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3382 | i915_gem_object_unpin(struct drm_i915_gem_object *obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3383 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3384 | struct drm_device *dev = obj->base.dev; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3385 | drm_i915_private_t *dev_priv = dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3386 | |
Chris Wilson | 23bc598 | 2010-09-29 16:10:57 +0100 | [diff] [blame] | 3387 | WARN_ON(i915_verify_lists(dev)); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3388 | BUG_ON(obj->pin_count == 0); |
| 3389 | BUG_ON(obj->gtt_space == NULL); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3390 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3391 | if (--obj->pin_count == 0) { |
| 3392 | if (!obj->active) |
| 3393 | list_move_tail(&obj->mm_list, |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3394 | &dev_priv->mm.inactive_list); |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 3395 | obj->pin_mappable = false; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3396 | } |
Chris Wilson | 23bc598 | 2010-09-29 16:10:57 +0100 | [diff] [blame] | 3397 | WARN_ON(i915_verify_lists(dev)); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3398 | } |
| 3399 | |
| 3400 | int |
| 3401 | i915_gem_pin_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3402 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3403 | { |
| 3404 | struct drm_i915_gem_pin *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3405 | struct drm_i915_gem_object *obj; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3406 | int ret; |
| 3407 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3408 | ret = i915_mutex_lock_interruptible(dev); |
| 3409 | if (ret) |
| 3410 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3411 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3412 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 3413 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3414 | ret = -ENOENT; |
| 3415 | goto unlock; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3416 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3417 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3418 | if (obj->madv != I915_MADV_WILLNEED) { |
Chris Wilson | bb6baf7 | 2009-09-22 14:24:13 +0100 | [diff] [blame] | 3419 | DRM_ERROR("Attempting to pin a purgeable buffer\n"); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3420 | ret = -EINVAL; |
| 3421 | goto out; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3422 | } |
| 3423 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3424 | if (obj->pin_filp != NULL && obj->pin_filp != file) { |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3425 | DRM_ERROR("Already pinned in i915_gem_pin_ioctl(): %d\n", |
| 3426 | args->handle); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3427 | ret = -EINVAL; |
| 3428 | goto out; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3429 | } |
| 3430 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3431 | obj->user_pin_count++; |
| 3432 | obj->pin_filp = file; |
| 3433 | if (obj->user_pin_count == 1) { |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 3434 | ret = i915_gem_object_pin(obj, args->alignment, true); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3435 | if (ret) |
| 3436 | goto out; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3437 | } |
| 3438 | |
| 3439 | /* XXX - flush the CPU caches for pinned objects |
| 3440 | * as the X server doesn't manage domains yet |
| 3441 | */ |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3442 | i915_gem_object_flush_cpu_write_domain(obj); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3443 | args->offset = obj->gtt_offset; |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3444 | out: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3445 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3446 | unlock: |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3447 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3448 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3449 | } |
| 3450 | |
| 3451 | int |
| 3452 | i915_gem_unpin_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3453 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3454 | { |
| 3455 | struct drm_i915_gem_pin *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3456 | struct drm_i915_gem_object *obj; |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 3457 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3458 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3459 | ret = i915_mutex_lock_interruptible(dev); |
| 3460 | if (ret) |
| 3461 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3462 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3463 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 3464 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3465 | ret = -ENOENT; |
| 3466 | goto unlock; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3467 | } |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 3468 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3469 | if (obj->pin_filp != file) { |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3470 | DRM_ERROR("Not pinned by caller in i915_gem_pin_ioctl(): %d\n", |
| 3471 | args->handle); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3472 | ret = -EINVAL; |
| 3473 | goto out; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3474 | } |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3475 | obj->user_pin_count--; |
| 3476 | if (obj->user_pin_count == 0) { |
| 3477 | obj->pin_filp = NULL; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3478 | i915_gem_object_unpin(obj); |
| 3479 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3480 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3481 | out: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3482 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3483 | unlock: |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3484 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3485 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3486 | } |
| 3487 | |
| 3488 | int |
| 3489 | i915_gem_busy_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3490 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3491 | { |
| 3492 | struct drm_i915_gem_busy *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3493 | struct drm_i915_gem_object *obj; |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 3494 | int ret; |
| 3495 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3496 | ret = i915_mutex_lock_interruptible(dev); |
| 3497 | if (ret) |
| 3498 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3499 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3500 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 3501 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3502 | ret = -ENOENT; |
| 3503 | goto unlock; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3504 | } |
Zou Nan hai | d1b851f | 2010-05-21 09:08:57 +0800 | [diff] [blame] | 3505 | |
Chris Wilson | 0be555b | 2010-08-04 15:36:30 +0100 | [diff] [blame] | 3506 | /* Count all active objects as busy, even if they are currently not used |
| 3507 | * by the gpu. Users of this interface expect objects to eventually |
| 3508 | * become non-busy without any further actions, therefore emit any |
| 3509 | * necessary flushes here. |
Eric Anholt | c4de0a5 | 2008-12-14 19:05:04 -0800 | [diff] [blame] | 3510 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3511 | args->busy = obj->active; |
Chris Wilson | 0be555b | 2010-08-04 15:36:30 +0100 | [diff] [blame] | 3512 | if (args->busy) { |
| 3513 | /* Unconditionally flush objects, even when the gpu still uses this |
| 3514 | * object. Userspace calling this function indicates that it wants to |
| 3515 | * use this buffer rather sooner than later, so issuing the required |
| 3516 | * flush earlier is beneficial. |
| 3517 | */ |
Chris Wilson | 1a1c697 | 2010-12-07 23:00:20 +0000 | [diff] [blame] | 3518 | if (obj->base.write_domain & I915_GEM_GPU_DOMAINS) { |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 3519 | ret = i915_gem_flush_ring(obj->ring, |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 3520 | 0, obj->base.write_domain); |
Chris Wilson | 1a1c697 | 2010-12-07 23:00:20 +0000 | [diff] [blame] | 3521 | } else if (obj->ring->outstanding_lazy_request == |
| 3522 | obj->last_rendering_seqno) { |
| 3523 | struct drm_i915_gem_request *request; |
| 3524 | |
Chris Wilson | 7a19487 | 2010-12-07 10:38:40 +0000 | [diff] [blame] | 3525 | /* This ring is not being cleared by active usage, |
| 3526 | * so emit a request to do so. |
| 3527 | */ |
Chris Wilson | 1a1c697 | 2010-12-07 23:00:20 +0000 | [diff] [blame] | 3528 | request = kzalloc(sizeof(*request), GFP_KERNEL); |
Rakib Mullick | 457eafc | 2011-11-16 00:49:28 +0600 | [diff] [blame] | 3529 | if (request) { |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 3530 | ret = i915_add_request(obj->ring, NULL, request); |
Rakib Mullick | 457eafc | 2011-11-16 00:49:28 +0600 | [diff] [blame] | 3531 | if (ret) |
| 3532 | kfree(request); |
| 3533 | } else |
Chris Wilson | 7a19487 | 2010-12-07 10:38:40 +0000 | [diff] [blame] | 3534 | ret = -ENOMEM; |
| 3535 | } |
Chris Wilson | 0be555b | 2010-08-04 15:36:30 +0100 | [diff] [blame] | 3536 | |
| 3537 | /* Update the active list for the hardware's current position. |
| 3538 | * Otherwise this only updates on a delayed timer or when irqs |
| 3539 | * are actually unmasked, and our working set ends up being |
| 3540 | * larger than required. |
| 3541 | */ |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 3542 | i915_gem_retire_requests_ring(obj->ring); |
Chris Wilson | 0be555b | 2010-08-04 15:36:30 +0100 | [diff] [blame] | 3543 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3544 | args->busy = obj->active; |
Chris Wilson | 0be555b | 2010-08-04 15:36:30 +0100 | [diff] [blame] | 3545 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3546 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3547 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3548 | unlock: |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3549 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3550 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3551 | } |
| 3552 | |
| 3553 | int |
| 3554 | i915_gem_throttle_ioctl(struct drm_device *dev, void *data, |
| 3555 | struct drm_file *file_priv) |
| 3556 | { |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 3557 | return i915_gem_ring_throttle(dev, file_priv); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3558 | } |
| 3559 | |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3560 | int |
| 3561 | i915_gem_madvise_ioctl(struct drm_device *dev, void *data, |
| 3562 | struct drm_file *file_priv) |
| 3563 | { |
| 3564 | struct drm_i915_gem_madvise *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3565 | struct drm_i915_gem_object *obj; |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 3566 | int ret; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3567 | |
| 3568 | switch (args->madv) { |
| 3569 | case I915_MADV_DONTNEED: |
| 3570 | case I915_MADV_WILLNEED: |
| 3571 | break; |
| 3572 | default: |
| 3573 | return -EINVAL; |
| 3574 | } |
| 3575 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3576 | ret = i915_mutex_lock_interruptible(dev); |
| 3577 | if (ret) |
| 3578 | return ret; |
| 3579 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3580 | 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] | 3581 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3582 | ret = -ENOENT; |
| 3583 | goto unlock; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3584 | } |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3585 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3586 | if (obj->pin_count) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3587 | ret = -EINVAL; |
| 3588 | goto out; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3589 | } |
| 3590 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3591 | if (obj->madv != __I915_MADV_PURGED) |
| 3592 | obj->madv = args->madv; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3593 | |
Chris Wilson | 2d7ef39 | 2009-09-20 23:13:10 +0100 | [diff] [blame] | 3594 | /* if the object is no longer bound, discard its backing storage */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3595 | if (i915_gem_object_is_purgeable(obj) && |
| 3596 | obj->gtt_space == NULL) |
Chris Wilson | 2d7ef39 | 2009-09-20 23:13:10 +0100 | [diff] [blame] | 3597 | i915_gem_object_truncate(obj); |
| 3598 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3599 | args->retained = obj->madv != __I915_MADV_PURGED; |
Chris Wilson | bb6baf7 | 2009-09-22 14:24:13 +0100 | [diff] [blame] | 3600 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3601 | out: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3602 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3603 | unlock: |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3604 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 3605 | return ret; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 3606 | } |
| 3607 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3608 | struct drm_i915_gem_object *i915_gem_alloc_object(struct drm_device *dev, |
| 3609 | size_t size) |
Daniel Vetter | ac52bc5 | 2010-04-09 19:05:06 +0000 | [diff] [blame] | 3610 | { |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 3611 | struct drm_i915_private *dev_priv = dev->dev_private; |
Daniel Vetter | c397b90 | 2010-04-09 19:05:07 +0000 | [diff] [blame] | 3612 | struct drm_i915_gem_object *obj; |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 3613 | struct address_space *mapping; |
Daniel Vetter | c397b90 | 2010-04-09 19:05:07 +0000 | [diff] [blame] | 3614 | |
| 3615 | obj = kzalloc(sizeof(*obj), GFP_KERNEL); |
| 3616 | if (obj == NULL) |
| 3617 | return NULL; |
| 3618 | |
| 3619 | if (drm_gem_object_init(dev, &obj->base, size) != 0) { |
| 3620 | kfree(obj); |
| 3621 | return NULL; |
| 3622 | } |
| 3623 | |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 3624 | mapping = obj->base.filp->f_path.dentry->d_inode->i_mapping; |
| 3625 | mapping_set_gfp_mask(mapping, GFP_HIGHUSER | __GFP_RECLAIMABLE); |
| 3626 | |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 3627 | i915_gem_info_add_obj(dev_priv, size); |
| 3628 | |
Daniel Vetter | c397b90 | 2010-04-09 19:05:07 +0000 | [diff] [blame] | 3629 | obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
| 3630 | obj->base.read_domains = I915_GEM_DOMAIN_CPU; |
| 3631 | |
Eugeni Dodonov | 3d29b84 | 2012-01-17 14:43:53 -0200 | [diff] [blame] | 3632 | if (HAS_LLC(dev)) { |
| 3633 | /* 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] | 3634 | * cache) for about a 10% performance improvement |
| 3635 | * compared to uncached. Graphics requests other than |
| 3636 | * display scanout are coherent with the CPU in |
| 3637 | * accessing this cache. This means in this mode we |
| 3638 | * don't need to clflush on the CPU side, and on the |
| 3639 | * GPU side we only need to flush internal caches to |
| 3640 | * get data visible to the CPU. |
| 3641 | * |
| 3642 | * However, we maintain the display planes as UC, and so |
| 3643 | * need to rebind when first used as such. |
| 3644 | */ |
| 3645 | obj->cache_level = I915_CACHE_LLC; |
| 3646 | } else |
| 3647 | obj->cache_level = I915_CACHE_NONE; |
| 3648 | |
Daniel Vetter | 62b8b21 | 2010-04-09 19:05:08 +0000 | [diff] [blame] | 3649 | obj->base.driver_private = NULL; |
Daniel Vetter | c397b90 | 2010-04-09 19:05:07 +0000 | [diff] [blame] | 3650 | obj->fence_reg = I915_FENCE_REG_NONE; |
Chris Wilson | 69dc498 | 2010-10-19 10:36:51 +0100 | [diff] [blame] | 3651 | INIT_LIST_HEAD(&obj->mm_list); |
Daniel Vetter | 93a37f2 | 2010-11-05 20:24:53 +0100 | [diff] [blame] | 3652 | INIT_LIST_HEAD(&obj->gtt_list); |
Chris Wilson | 69dc498 | 2010-10-19 10:36:51 +0100 | [diff] [blame] | 3653 | INIT_LIST_HEAD(&obj->ring_list); |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 3654 | INIT_LIST_HEAD(&obj->exec_list); |
Daniel Vetter | c397b90 | 2010-04-09 19:05:07 +0000 | [diff] [blame] | 3655 | INIT_LIST_HEAD(&obj->gpu_write_list); |
Daniel Vetter | c397b90 | 2010-04-09 19:05:07 +0000 | [diff] [blame] | 3656 | obj->madv = I915_MADV_WILLNEED; |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 3657 | /* Avoid an unnecessary call to unbind on the first bind. */ |
| 3658 | obj->map_and_fenceable = true; |
Daniel Vetter | c397b90 | 2010-04-09 19:05:07 +0000 | [diff] [blame] | 3659 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3660 | return obj; |
Daniel Vetter | ac52bc5 | 2010-04-09 19:05:06 +0000 | [diff] [blame] | 3661 | } |
| 3662 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3663 | int i915_gem_init_object(struct drm_gem_object *obj) |
| 3664 | { |
Daniel Vetter | c397b90 | 2010-04-09 19:05:07 +0000 | [diff] [blame] | 3665 | BUG(); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3666 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3667 | return 0; |
| 3668 | } |
| 3669 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3670 | static void i915_gem_free_object_tail(struct drm_i915_gem_object *obj) |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 3671 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3672 | struct drm_device *dev = obj->base.dev; |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 3673 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 3674 | int ret; |
| 3675 | |
| 3676 | ret = i915_gem_object_unbind(obj); |
| 3677 | if (ret == -ERESTARTSYS) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3678 | list_move(&obj->mm_list, |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 3679 | &dev_priv->mm.deferred_free_list); |
| 3680 | return; |
| 3681 | } |
| 3682 | |
Chris Wilson | 26e12f89 | 2011-03-20 11:20:19 +0000 | [diff] [blame] | 3683 | trace_i915_gem_object_destroy(obj); |
| 3684 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3685 | if (obj->base.map_list.map) |
Rob Clark | b464e9a | 2011-08-10 08:09:08 -0500 | [diff] [blame] | 3686 | drm_gem_free_mmap_offset(&obj->base); |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 3687 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3688 | drm_gem_object_release(&obj->base); |
| 3689 | i915_gem_info_remove_obj(dev_priv, obj->base.size); |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 3690 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3691 | kfree(obj->page_cpu_valid); |
| 3692 | kfree(obj->bit_17); |
| 3693 | kfree(obj); |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 3694 | } |
| 3695 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3696 | void i915_gem_free_object(struct drm_gem_object *gem_obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3697 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3698 | struct drm_i915_gem_object *obj = to_intel_bo(gem_obj); |
| 3699 | struct drm_device *dev = obj->base.dev; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3700 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3701 | while (obj->pin_count > 0) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3702 | i915_gem_object_unpin(obj); |
| 3703 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3704 | if (obj->phys_obj) |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 3705 | i915_gem_detach_phys_object(dev, obj); |
| 3706 | |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 3707 | i915_gem_free_object_tail(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3708 | } |
| 3709 | |
Jesse Barnes | 5669fca | 2009-02-17 15:13:31 -0800 | [diff] [blame] | 3710 | int |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3711 | i915_gem_idle(struct drm_device *dev) |
| 3712 | { |
| 3713 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 3714 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3715 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3716 | mutex_lock(&dev->struct_mutex); |
| 3717 | |
Chris Wilson | 87acb0a | 2010-10-19 10:13:00 +0100 | [diff] [blame] | 3718 | if (dev_priv->mm.suspended) { |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3719 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3720 | return 0; |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3721 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3722 | |
Ben Widawsky | b93f9cf | 2012-01-25 15:39:34 -0800 | [diff] [blame] | 3723 | ret = i915_gpu_idle(dev, true); |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3724 | if (ret) { |
| 3725 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3726 | return ret; |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3727 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3728 | |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 3729 | /* Under UMS, be paranoid and evict. */ |
| 3730 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) { |
Chris Wilson | 5eac3ab | 2010-10-31 08:49:47 +0000 | [diff] [blame] | 3731 | ret = i915_gem_evict_inactive(dev, false); |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 3732 | if (ret) { |
| 3733 | mutex_unlock(&dev->struct_mutex); |
| 3734 | return ret; |
| 3735 | } |
| 3736 | } |
| 3737 | |
Chris Wilson | 312817a | 2010-11-22 11:50:11 +0000 | [diff] [blame] | 3738 | i915_gem_reset_fences(dev); |
| 3739 | |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 3740 | /* Hack! Don't let anybody do execbuf while we don't control the chip. |
| 3741 | * We need to replace this with a semaphore, or something. |
| 3742 | * And not confound mm.suspended! |
| 3743 | */ |
| 3744 | dev_priv->mm.suspended = 1; |
Daniel Vetter | bc0c7f1 | 2010-08-20 18:18:48 +0200 | [diff] [blame] | 3745 | del_timer_sync(&dev_priv->hangcheck_timer); |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 3746 | |
| 3747 | i915_kernel_lost_context(dev); |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3748 | i915_gem_cleanup_ringbuffer(dev); |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 3749 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3750 | mutex_unlock(&dev->struct_mutex); |
| 3751 | |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 3752 | /* Cancel the retire work handler, which should be idle now. */ |
| 3753 | cancel_delayed_work_sync(&dev_priv->mm.retire_work); |
| 3754 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3755 | return 0; |
| 3756 | } |
| 3757 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3758 | int |
Zou Nan hai | 8187a2b | 2010-05-21 09:08:55 +0800 | [diff] [blame] | 3759 | i915_gem_init_ringbuffer(struct drm_device *dev) |
| 3760 | { |
| 3761 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 3762 | int ret; |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 3763 | |
Xiang, Haihao | 5c1143b | 2010-09-16 10:43:11 +0800 | [diff] [blame] | 3764 | ret = intel_init_render_ring_buffer(dev); |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 3765 | if (ret) |
Chris Wilson | b6913e4 | 2010-11-12 10:46:37 +0000 | [diff] [blame] | 3766 | return ret; |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 3767 | |
| 3768 | if (HAS_BSD(dev)) { |
Xiang, Haihao | 5c1143b | 2010-09-16 10:43:11 +0800 | [diff] [blame] | 3769 | ret = intel_init_bsd_ring_buffer(dev); |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 3770 | if (ret) |
| 3771 | goto cleanup_render_ring; |
Zou Nan hai | d1b851f | 2010-05-21 09:08:57 +0800 | [diff] [blame] | 3772 | } |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 3773 | |
Chris Wilson | 549f736 | 2010-10-19 11:19:32 +0100 | [diff] [blame] | 3774 | if (HAS_BLT(dev)) { |
| 3775 | ret = intel_init_blt_ring_buffer(dev); |
| 3776 | if (ret) |
| 3777 | goto cleanup_bsd_ring; |
| 3778 | } |
| 3779 | |
Chris Wilson | 6f392d548 | 2010-08-07 11:01:22 +0100 | [diff] [blame] | 3780 | dev_priv->next_seqno = 1; |
| 3781 | |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 3782 | return 0; |
| 3783 | |
Chris Wilson | 549f736 | 2010-10-19 11:19:32 +0100 | [diff] [blame] | 3784 | cleanup_bsd_ring: |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 3785 | intel_cleanup_ring_buffer(&dev_priv->ring[VCS]); |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 3786 | cleanup_render_ring: |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 3787 | intel_cleanup_ring_buffer(&dev_priv->ring[RCS]); |
Zou Nan hai | 8187a2b | 2010-05-21 09:08:55 +0800 | [diff] [blame] | 3788 | return ret; |
| 3789 | } |
| 3790 | |
| 3791 | void |
| 3792 | i915_gem_cleanup_ringbuffer(struct drm_device *dev) |
| 3793 | { |
| 3794 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 3795 | int i; |
Zou Nan hai | 8187a2b | 2010-05-21 09:08:55 +0800 | [diff] [blame] | 3796 | |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 3797 | for (i = 0; i < I915_NUM_RINGS; i++) |
| 3798 | intel_cleanup_ring_buffer(&dev_priv->ring[i]); |
Zou Nan hai | 8187a2b | 2010-05-21 09:08:55 +0800 | [diff] [blame] | 3799 | } |
| 3800 | |
| 3801 | int |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3802 | i915_gem_entervt_ioctl(struct drm_device *dev, void *data, |
| 3803 | struct drm_file *file_priv) |
| 3804 | { |
| 3805 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 3806 | int ret, i; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3807 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3808 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
| 3809 | return 0; |
| 3810 | |
Ben Gamari | ba1234d | 2009-09-14 17:48:47 -0400 | [diff] [blame] | 3811 | if (atomic_read(&dev_priv->mm.wedged)) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3812 | DRM_ERROR("Reenabling wedged hardware, good luck\n"); |
Ben Gamari | ba1234d | 2009-09-14 17:48:47 -0400 | [diff] [blame] | 3813 | atomic_set(&dev_priv->mm.wedged, 0); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3814 | } |
| 3815 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3816 | mutex_lock(&dev->struct_mutex); |
Eric Anholt | 9bb2d6f | 2008-12-23 18:42:32 -0800 | [diff] [blame] | 3817 | dev_priv->mm.suspended = 0; |
| 3818 | |
| 3819 | ret = i915_gem_init_ringbuffer(dev); |
Wu Fengguang | d816f6a | 2009-04-18 10:43:32 +0800 | [diff] [blame] | 3820 | if (ret != 0) { |
| 3821 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 9bb2d6f | 2008-12-23 18:42:32 -0800 | [diff] [blame] | 3822 | return ret; |
Wu Fengguang | d816f6a | 2009-04-18 10:43:32 +0800 | [diff] [blame] | 3823 | } |
Eric Anholt | 9bb2d6f | 2008-12-23 18:42:32 -0800 | [diff] [blame] | 3824 | |
Chris Wilson | 69dc498 | 2010-10-19 10:36:51 +0100 | [diff] [blame] | 3825 | BUG_ON(!list_empty(&dev_priv->mm.active_list)); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3826 | BUG_ON(!list_empty(&dev_priv->mm.flushing_list)); |
| 3827 | BUG_ON(!list_empty(&dev_priv->mm.inactive_list)); |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 3828 | for (i = 0; i < I915_NUM_RINGS; i++) { |
| 3829 | BUG_ON(!list_empty(&dev_priv->ring[i].active_list)); |
| 3830 | BUG_ON(!list_empty(&dev_priv->ring[i].request_list)); |
| 3831 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3832 | mutex_unlock(&dev->struct_mutex); |
Kristian Høgsberg | dbb19d3 | 2008-08-20 11:04:27 -0400 | [diff] [blame] | 3833 | |
Chris Wilson | 5f35308 | 2010-06-07 14:03:03 +0100 | [diff] [blame] | 3834 | ret = drm_irq_install(dev); |
| 3835 | if (ret) |
| 3836 | goto cleanup_ringbuffer; |
Kristian Høgsberg | dbb19d3 | 2008-08-20 11:04:27 -0400 | [diff] [blame] | 3837 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3838 | return 0; |
Chris Wilson | 5f35308 | 2010-06-07 14:03:03 +0100 | [diff] [blame] | 3839 | |
| 3840 | cleanup_ringbuffer: |
| 3841 | mutex_lock(&dev->struct_mutex); |
| 3842 | i915_gem_cleanup_ringbuffer(dev); |
| 3843 | dev_priv->mm.suspended = 1; |
| 3844 | mutex_unlock(&dev->struct_mutex); |
| 3845 | |
| 3846 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3847 | } |
| 3848 | |
| 3849 | int |
| 3850 | i915_gem_leavevt_ioctl(struct drm_device *dev, void *data, |
| 3851 | struct drm_file *file_priv) |
| 3852 | { |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3853 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
| 3854 | return 0; |
| 3855 | |
Kristian Høgsberg | dbb19d3 | 2008-08-20 11:04:27 -0400 | [diff] [blame] | 3856 | drm_irq_uninstall(dev); |
Linus Torvalds | e6890f6 | 2009-09-08 17:09:24 -0700 | [diff] [blame] | 3857 | return i915_gem_idle(dev); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3858 | } |
| 3859 | |
| 3860 | void |
| 3861 | i915_gem_lastclose(struct drm_device *dev) |
| 3862 | { |
| 3863 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3864 | |
Eric Anholt | e806b49 | 2009-01-22 09:56:58 -0800 | [diff] [blame] | 3865 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
| 3866 | return; |
| 3867 | |
Keith Packard | 6dbe277 | 2008-10-14 21:41:13 -0700 | [diff] [blame] | 3868 | ret = i915_gem_idle(dev); |
| 3869 | if (ret) |
| 3870 | DRM_ERROR("failed to idle hardware: %d\n", ret); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3871 | } |
| 3872 | |
Chris Wilson | 6419340 | 2010-10-24 12:38:05 +0100 | [diff] [blame] | 3873 | static void |
| 3874 | init_ring_lists(struct intel_ring_buffer *ring) |
| 3875 | { |
| 3876 | INIT_LIST_HEAD(&ring->active_list); |
| 3877 | INIT_LIST_HEAD(&ring->request_list); |
| 3878 | INIT_LIST_HEAD(&ring->gpu_write_list); |
| 3879 | } |
| 3880 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3881 | void |
| 3882 | i915_gem_load(struct drm_device *dev) |
| 3883 | { |
Grégoire Henry | b5aa8a0 | 2009-06-23 15:41:02 +0200 | [diff] [blame] | 3884 | int i; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3885 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 3886 | |
Chris Wilson | 69dc498 | 2010-10-19 10:36:51 +0100 | [diff] [blame] | 3887 | INIT_LIST_HEAD(&dev_priv->mm.active_list); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3888 | INIT_LIST_HEAD(&dev_priv->mm.flushing_list); |
| 3889 | INIT_LIST_HEAD(&dev_priv->mm.inactive_list); |
Chris Wilson | f13d3f7 | 2010-09-20 17:36:15 +0100 | [diff] [blame] | 3890 | INIT_LIST_HEAD(&dev_priv->mm.pinned_list); |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 3891 | INIT_LIST_HEAD(&dev_priv->mm.fence_list); |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 3892 | INIT_LIST_HEAD(&dev_priv->mm.deferred_free_list); |
Daniel Vetter | 93a37f2 | 2010-11-05 20:24:53 +0100 | [diff] [blame] | 3893 | INIT_LIST_HEAD(&dev_priv->mm.gtt_list); |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 3894 | for (i = 0; i < I915_NUM_RINGS; i++) |
| 3895 | init_ring_lists(&dev_priv->ring[i]); |
Daniel Vetter | 4b9de73 | 2011-10-09 21:52:02 +0200 | [diff] [blame] | 3896 | for (i = 0; i < I915_MAX_NUM_FENCES; i++) |
Daniel Vetter | 007cc8a | 2010-04-28 11:02:31 +0200 | [diff] [blame] | 3897 | INIT_LIST_HEAD(&dev_priv->fence_regs[i].lru_list); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3898 | INIT_DELAYED_WORK(&dev_priv->mm.retire_work, |
| 3899 | i915_gem_retire_work_handler); |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 3900 | init_completion(&dev_priv->error_completion); |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 3901 | |
Dave Airlie | 9440012 | 2010-07-20 13:15:31 +1000 | [diff] [blame] | 3902 | /* On GEN3 we really need to make sure the ARB C3 LP bit is set */ |
| 3903 | if (IS_GEN3(dev)) { |
| 3904 | u32 tmp = I915_READ(MI_ARB_STATE); |
| 3905 | if (!(tmp & MI_ARB_C3_LP_WRITE_ENABLE)) { |
| 3906 | /* arb state is a masked write, so set bit + bit in mask */ |
| 3907 | tmp = MI_ARB_C3_LP_WRITE_ENABLE | (MI_ARB_C3_LP_WRITE_ENABLE << MI_ARB_MASK_SHIFT); |
| 3908 | I915_WRITE(MI_ARB_STATE, tmp); |
| 3909 | } |
| 3910 | } |
| 3911 | |
Chris Wilson | 72bfa19 | 2010-12-19 11:42:05 +0000 | [diff] [blame] | 3912 | dev_priv->relative_constants_mode = I915_EXEC_CONSTANTS_REL_GENERAL; |
| 3913 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3914 | /* Old X drivers will take 0-2 for front, back, depth buffers */ |
Eric Anholt | b397c83 | 2010-01-26 09:43:10 -0800 | [diff] [blame] | 3915 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
| 3916 | dev_priv->fence_reg_start = 3; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3917 | |
Chris Wilson | a6c45cf | 2010-09-17 00:32:17 +0100 | [diff] [blame] | 3918 | 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] | 3919 | dev_priv->num_fence_regs = 16; |
| 3920 | else |
| 3921 | dev_priv->num_fence_regs = 8; |
| 3922 | |
Grégoire Henry | b5aa8a0 | 2009-06-23 15:41:02 +0200 | [diff] [blame] | 3923 | /* Initialize fence registers to zero */ |
Eric Anholt | 10ed13e | 2011-05-06 13:53:49 -0700 | [diff] [blame] | 3924 | for (i = 0; i < dev_priv->num_fence_regs; i++) { |
| 3925 | i915_gem_clear_fence_reg(dev, &dev_priv->fence_regs[i]); |
Grégoire Henry | b5aa8a0 | 2009-06-23 15:41:02 +0200 | [diff] [blame] | 3926 | } |
Eric Anholt | 10ed13e | 2011-05-06 13:53:49 -0700 | [diff] [blame] | 3927 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3928 | i915_gem_detect_bit_6_swizzle(dev); |
Kristian Høgsberg | 6b95a20 | 2009-11-18 11:25:18 -0500 | [diff] [blame] | 3929 | init_waitqueue_head(&dev_priv->pending_flip_queue); |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 3930 | |
Chris Wilson | ce453d8 | 2011-02-21 14:43:56 +0000 | [diff] [blame] | 3931 | dev_priv->mm.interruptible = true; |
| 3932 | |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 3933 | dev_priv->mm.inactive_shrinker.shrink = i915_gem_inactive_shrink; |
| 3934 | dev_priv->mm.inactive_shrinker.seeks = DEFAULT_SEEKS; |
| 3935 | register_shrinker(&dev_priv->mm.inactive_shrinker); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3936 | } |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 3937 | |
| 3938 | /* |
| 3939 | * Create a physically contiguous memory object for this object |
| 3940 | * e.g. for cursor + overlay regs |
| 3941 | */ |
Chris Wilson | 995b676 | 2010-08-20 13:23:26 +0100 | [diff] [blame] | 3942 | static int i915_gem_init_phys_object(struct drm_device *dev, |
| 3943 | int id, int size, int align) |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 3944 | { |
| 3945 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 3946 | struct drm_i915_gem_phys_object *phys_obj; |
| 3947 | int ret; |
| 3948 | |
| 3949 | if (dev_priv->mm.phys_objs[id - 1] || !size) |
| 3950 | return 0; |
| 3951 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 3952 | phys_obj = kzalloc(sizeof(struct drm_i915_gem_phys_object), GFP_KERNEL); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 3953 | if (!phys_obj) |
| 3954 | return -ENOMEM; |
| 3955 | |
| 3956 | phys_obj->id = id; |
| 3957 | |
Chris Wilson | 6eeefaf | 2010-08-07 11:01:39 +0100 | [diff] [blame] | 3958 | phys_obj->handle = drm_pci_alloc(dev, size, align); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 3959 | if (!phys_obj->handle) { |
| 3960 | ret = -ENOMEM; |
| 3961 | goto kfree_obj; |
| 3962 | } |
| 3963 | #ifdef CONFIG_X86 |
| 3964 | set_memory_wc((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); |
| 3965 | #endif |
| 3966 | |
| 3967 | dev_priv->mm.phys_objs[id - 1] = phys_obj; |
| 3968 | |
| 3969 | return 0; |
| 3970 | kfree_obj: |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 3971 | kfree(phys_obj); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 3972 | return ret; |
| 3973 | } |
| 3974 | |
Chris Wilson | 995b676 | 2010-08-20 13:23:26 +0100 | [diff] [blame] | 3975 | 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] | 3976 | { |
| 3977 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 3978 | struct drm_i915_gem_phys_object *phys_obj; |
| 3979 | |
| 3980 | if (!dev_priv->mm.phys_objs[id - 1]) |
| 3981 | return; |
| 3982 | |
| 3983 | phys_obj = dev_priv->mm.phys_objs[id - 1]; |
| 3984 | if (phys_obj->cur_obj) { |
| 3985 | i915_gem_detach_phys_object(dev, phys_obj->cur_obj); |
| 3986 | } |
| 3987 | |
| 3988 | #ifdef CONFIG_X86 |
| 3989 | set_memory_wb((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); |
| 3990 | #endif |
| 3991 | drm_pci_free(dev, phys_obj->handle); |
| 3992 | kfree(phys_obj); |
| 3993 | dev_priv->mm.phys_objs[id - 1] = NULL; |
| 3994 | } |
| 3995 | |
| 3996 | void i915_gem_free_all_phys_object(struct drm_device *dev) |
| 3997 | { |
| 3998 | int i; |
| 3999 | |
Dave Airlie | 260883c | 2009-01-22 17:58:49 +1000 | [diff] [blame] | 4000 | 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] | 4001 | i915_gem_free_phys_object(dev, i); |
| 4002 | } |
| 4003 | |
| 4004 | void i915_gem_detach_phys_object(struct drm_device *dev, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4005 | struct drm_i915_gem_object *obj) |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4006 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4007 | 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] | 4008 | char *vaddr; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4009 | int i; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4010 | int page_count; |
| 4011 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4012 | if (!obj->phys_obj) |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4013 | return; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4014 | vaddr = obj->phys_obj->handle->vaddr; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4015 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4016 | page_count = obj->base.size / PAGE_SIZE; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4017 | for (i = 0; i < page_count; i++) { |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 4018 | struct page *page = shmem_read_mapping_page(mapping, i); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 4019 | if (!IS_ERR(page)) { |
| 4020 | char *dst = kmap_atomic(page); |
| 4021 | memcpy(dst, vaddr + i*PAGE_SIZE, PAGE_SIZE); |
| 4022 | kunmap_atomic(dst); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4023 | |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 4024 | drm_clflush_pages(&page, 1); |
| 4025 | |
| 4026 | set_page_dirty(page); |
| 4027 | mark_page_accessed(page); |
| 4028 | page_cache_release(page); |
| 4029 | } |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4030 | } |
Daniel Vetter | 40ce657 | 2010-11-05 18:12:18 +0100 | [diff] [blame] | 4031 | intel_gtt_chipset_flush(); |
Chris Wilson | d78b47b | 2009-06-17 21:52:49 +0100 | [diff] [blame] | 4032 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4033 | obj->phys_obj->cur_obj = NULL; |
| 4034 | obj->phys_obj = NULL; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4035 | } |
| 4036 | |
| 4037 | int |
| 4038 | i915_gem_attach_phys_object(struct drm_device *dev, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4039 | struct drm_i915_gem_object *obj, |
Chris Wilson | 6eeefaf | 2010-08-07 11:01:39 +0100 | [diff] [blame] | 4040 | int id, |
| 4041 | int align) |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4042 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4043 | 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] | 4044 | drm_i915_private_t *dev_priv = dev->dev_private; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4045 | int ret = 0; |
| 4046 | int page_count; |
| 4047 | int i; |
| 4048 | |
| 4049 | if (id > I915_MAX_PHYS_OBJECT) |
| 4050 | return -EINVAL; |
| 4051 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4052 | if (obj->phys_obj) { |
| 4053 | if (obj->phys_obj->id == id) |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4054 | return 0; |
| 4055 | i915_gem_detach_phys_object(dev, obj); |
| 4056 | } |
| 4057 | |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4058 | /* create a new object */ |
| 4059 | if (!dev_priv->mm.phys_objs[id - 1]) { |
| 4060 | ret = i915_gem_init_phys_object(dev, id, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4061 | obj->base.size, align); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4062 | if (ret) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4063 | DRM_ERROR("failed to init phys object %d size: %zu\n", |
| 4064 | id, obj->base.size); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 4065 | return ret; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4066 | } |
| 4067 | } |
| 4068 | |
| 4069 | /* bind to the object */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4070 | obj->phys_obj = dev_priv->mm.phys_objs[id - 1]; |
| 4071 | obj->phys_obj->cur_obj = obj; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4072 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4073 | page_count = obj->base.size / PAGE_SIZE; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4074 | |
| 4075 | for (i = 0; i < page_count; i++) { |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 4076 | struct page *page; |
| 4077 | char *dst, *src; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4078 | |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 4079 | page = shmem_read_mapping_page(mapping, i); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 4080 | if (IS_ERR(page)) |
| 4081 | return PTR_ERR(page); |
| 4082 | |
Chris Wilson | ff75b9b | 2010-10-30 22:52:31 +0100 | [diff] [blame] | 4083 | src = kmap_atomic(page); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4084 | dst = obj->phys_obj->handle->vaddr + (i * PAGE_SIZE); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4085 | memcpy(dst, src, PAGE_SIZE); |
Peter Zijlstra | 3e4d3af | 2010-10-26 14:21:51 -0700 | [diff] [blame] | 4086 | kunmap_atomic(src); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 4087 | |
| 4088 | mark_page_accessed(page); |
| 4089 | page_cache_release(page); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4090 | } |
| 4091 | |
| 4092 | return 0; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4093 | } |
| 4094 | |
| 4095 | static int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4096 | i915_gem_phys_pwrite(struct drm_device *dev, |
| 4097 | struct drm_i915_gem_object *obj, |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4098 | struct drm_i915_gem_pwrite *args, |
| 4099 | struct drm_file *file_priv) |
| 4100 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4101 | void *vaddr = obj->phys_obj->handle->vaddr + args->offset; |
Chris Wilson | b47b30c | 2010-11-08 01:12:29 +0000 | [diff] [blame] | 4102 | char __user *user_data = (char __user *) (uintptr_t) args->data_ptr; |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4103 | |
Chris Wilson | b47b30c | 2010-11-08 01:12:29 +0000 | [diff] [blame] | 4104 | if (__copy_from_user_inatomic_nocache(vaddr, user_data, args->size)) { |
| 4105 | unsigned long unwritten; |
| 4106 | |
| 4107 | /* The physical object once assigned is fixed for the lifetime |
| 4108 | * of the obj, so we can safely drop the lock and continue |
| 4109 | * to access vaddr. |
| 4110 | */ |
| 4111 | mutex_unlock(&dev->struct_mutex); |
| 4112 | unwritten = copy_from_user(vaddr, user_data, args->size); |
| 4113 | mutex_lock(&dev->struct_mutex); |
| 4114 | if (unwritten) |
| 4115 | return -EFAULT; |
| 4116 | } |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4117 | |
Daniel Vetter | 40ce657 | 2010-11-05 18:12:18 +0100 | [diff] [blame] | 4118 | intel_gtt_chipset_flush(); |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 4119 | return 0; |
| 4120 | } |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 4121 | |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 4122 | void i915_gem_release(struct drm_device *dev, struct drm_file *file) |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 4123 | { |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 4124 | struct drm_i915_file_private *file_priv = file->driver_priv; |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 4125 | |
| 4126 | /* Clean up our request list when the client is going away, so that |
| 4127 | * later retire_requests won't dereference our soon-to-be-gone |
| 4128 | * file_priv. |
| 4129 | */ |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 4130 | spin_lock(&file_priv->mm.lock); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 4131 | while (!list_empty(&file_priv->mm.request_list)) { |
| 4132 | struct drm_i915_gem_request *request; |
| 4133 | |
| 4134 | request = list_first_entry(&file_priv->mm.request_list, |
| 4135 | struct drm_i915_gem_request, |
| 4136 | client_list); |
| 4137 | list_del(&request->client_list); |
| 4138 | request->file_priv = NULL; |
| 4139 | } |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 4140 | spin_unlock(&file_priv->mm.lock); |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 4141 | } |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4142 | |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4143 | static int |
Chris Wilson | 1637ef4 | 2010-04-20 17:10:35 +0100 | [diff] [blame] | 4144 | i915_gpu_is_active(struct drm_device *dev) |
| 4145 | { |
| 4146 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 4147 | int lists_empty; |
| 4148 | |
Chris Wilson | 1637ef4 | 2010-04-20 17:10:35 +0100 | [diff] [blame] | 4149 | lists_empty = list_empty(&dev_priv->mm.flushing_list) && |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 4150 | list_empty(&dev_priv->mm.active_list); |
Chris Wilson | 1637ef4 | 2010-04-20 17:10:35 +0100 | [diff] [blame] | 4151 | |
| 4152 | return !lists_empty; |
| 4153 | } |
| 4154 | |
| 4155 | static int |
Ying Han | 1495f23 | 2011-05-24 17:12:27 -0700 | [diff] [blame] | 4156 | i915_gem_inactive_shrink(struct shrinker *shrinker, struct shrink_control *sc) |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4157 | { |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 4158 | struct drm_i915_private *dev_priv = |
| 4159 | container_of(shrinker, |
| 4160 | struct drm_i915_private, |
| 4161 | mm.inactive_shrinker); |
| 4162 | struct drm_device *dev = dev_priv->dev; |
| 4163 | struct drm_i915_gem_object *obj, *next; |
Ying Han | 1495f23 | 2011-05-24 17:12:27 -0700 | [diff] [blame] | 4164 | int nr_to_scan = sc->nr_to_scan; |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 4165 | int cnt; |
| 4166 | |
| 4167 | if (!mutex_trylock(&dev->struct_mutex)) |
Chris Wilson | bbe2e11 | 2010-10-28 22:35:07 +0100 | [diff] [blame] | 4168 | return 0; |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4169 | |
| 4170 | /* "fast-path" to count number of available objects */ |
| 4171 | if (nr_to_scan == 0) { |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 4172 | cnt = 0; |
| 4173 | list_for_each_entry(obj, |
| 4174 | &dev_priv->mm.inactive_list, |
| 4175 | mm_list) |
| 4176 | cnt++; |
| 4177 | mutex_unlock(&dev->struct_mutex); |
| 4178 | return cnt / 100 * sysctl_vfs_cache_pressure; |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4179 | } |
| 4180 | |
Chris Wilson | 1637ef4 | 2010-04-20 17:10:35 +0100 | [diff] [blame] | 4181 | rescan: |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4182 | /* first scan for clean buffers */ |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 4183 | i915_gem_retire_requests(dev); |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4184 | |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 4185 | list_for_each_entry_safe(obj, next, |
| 4186 | &dev_priv->mm.inactive_list, |
| 4187 | mm_list) { |
| 4188 | if (i915_gem_object_is_purgeable(obj)) { |
Chris Wilson | 2021746 | 2010-11-23 15:26:33 +0000 | [diff] [blame] | 4189 | if (i915_gem_object_unbind(obj) == 0 && |
| 4190 | --nr_to_scan == 0) |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 4191 | break; |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4192 | } |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4193 | } |
| 4194 | |
| 4195 | /* second pass, evict/count anything still on the inactive list */ |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 4196 | cnt = 0; |
| 4197 | list_for_each_entry_safe(obj, next, |
| 4198 | &dev_priv->mm.inactive_list, |
| 4199 | mm_list) { |
Chris Wilson | 2021746 | 2010-11-23 15:26:33 +0000 | [diff] [blame] | 4200 | if (nr_to_scan && |
| 4201 | i915_gem_object_unbind(obj) == 0) |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 4202 | nr_to_scan--; |
Chris Wilson | 2021746 | 2010-11-23 15:26:33 +0000 | [diff] [blame] | 4203 | else |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 4204 | cnt++; |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4205 | } |
| 4206 | |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 4207 | if (nr_to_scan && i915_gpu_is_active(dev)) { |
Chris Wilson | 1637ef4 | 2010-04-20 17:10:35 +0100 | [diff] [blame] | 4208 | /* |
| 4209 | * We are desperate for pages, so as a last resort, wait |
| 4210 | * for the GPU to finish and discard whatever we can. |
| 4211 | * This has a dramatic impact to reduce the number of |
| 4212 | * OOM-killer events whilst running the GPU aggressively. |
| 4213 | */ |
Ben Widawsky | b93f9cf | 2012-01-25 15:39:34 -0800 | [diff] [blame] | 4214 | if (i915_gpu_idle(dev, true) == 0) |
Chris Wilson | 1637ef4 | 2010-04-20 17:10:35 +0100 | [diff] [blame] | 4215 | goto rescan; |
| 4216 | } |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 4217 | mutex_unlock(&dev->struct_mutex); |
| 4218 | return cnt / 100 * sysctl_vfs_cache_pressure; |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4219 | } |