Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2008 Intel Corporation |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 21 | * IN THE SOFTWARE. |
| 22 | * |
| 23 | * Authors: |
| 24 | * Eric Anholt <eric@anholt.net> |
| 25 | * |
| 26 | */ |
| 27 | |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 28 | #include <drm/drmP.h> |
David Herrmann | 0de2397 | 2013-07-24 21:07:52 +0200 | [diff] [blame] | 29 | #include <drm/drm_vma_manager.h> |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 30 | #include <drm/i915_drm.h> |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 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" |
Chris Wilson | 2cfcd32 | 2014-05-20 08:28:43 +0100 | [diff] [blame] | 34 | #include <linux/oom.h> |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 35 | #include <linux/shmem_fs.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 36 | #include <linux/slab.h> |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 37 | #include <linux/swap.h> |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 38 | #include <linux/pci.h> |
Daniel Vetter | 1286ff7 | 2012-05-10 15:25:09 +0200 | [diff] [blame] | 39 | #include <linux/dma-buf.h> |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 40 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 41 | static void i915_gem_object_flush_gtt_write_domain(struct drm_i915_gem_object *obj); |
Daniel Vetter | e62b59e | 2015-01-21 14:53:48 +0100 | [diff] [blame] | 42 | static void i915_gem_object_flush_cpu_write_domain(struct drm_i915_gem_object *obj); |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 43 | static __must_check int |
Ben Widawsky | 23f5448 | 2013-09-11 14:57:48 -0700 | [diff] [blame] | 44 | i915_gem_object_wait_rendering(struct drm_i915_gem_object *obj, |
| 45 | bool readonly); |
Chris Wilson | c8725f3 | 2014-03-17 12:21:55 +0000 | [diff] [blame] | 46 | static void |
| 47 | i915_gem_object_retire(struct drm_i915_gem_object *obj); |
| 48 | |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 49 | static void i915_gem_write_fence(struct drm_device *dev, int reg, |
| 50 | struct drm_i915_gem_object *obj); |
| 51 | static void i915_gem_object_update_fence(struct drm_i915_gem_object *obj, |
| 52 | struct drm_i915_fence_reg *fence, |
| 53 | bool enable); |
| 54 | |
Chris Wilson | ceabbba5 | 2014-03-25 13:23:04 +0000 | [diff] [blame] | 55 | static unsigned long i915_gem_shrinker_count(struct shrinker *shrinker, |
Dave Chinner | 7dc19d5 | 2013-08-28 10:18:11 +1000 | [diff] [blame] | 56 | struct shrink_control *sc); |
Chris Wilson | ceabbba5 | 2014-03-25 13:23:04 +0000 | [diff] [blame] | 57 | static unsigned long i915_gem_shrinker_scan(struct shrinker *shrinker, |
Dave Chinner | 7dc19d5 | 2013-08-28 10:18:11 +1000 | [diff] [blame] | 58 | struct shrink_control *sc); |
Chris Wilson | 2cfcd32 | 2014-05-20 08:28:43 +0100 | [diff] [blame] | 59 | static int i915_gem_shrinker_oom(struct notifier_block *nb, |
| 60 | unsigned long event, |
| 61 | void *ptr); |
Chris Wilson | d9973b4 | 2013-10-04 10:33:00 +0100 | [diff] [blame] | 62 | static unsigned long i915_gem_shrink_all(struct drm_i915_private *dev_priv); |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 63 | |
Chris Wilson | c76ce03 | 2013-08-08 14:41:03 +0100 | [diff] [blame] | 64 | static bool cpu_cache_is_coherent(struct drm_device *dev, |
| 65 | enum i915_cache_level level) |
| 66 | { |
| 67 | return HAS_LLC(dev) || level != I915_CACHE_NONE; |
| 68 | } |
| 69 | |
Chris Wilson | 2c22569 | 2013-08-09 12:26:45 +0100 | [diff] [blame] | 70 | static bool cpu_write_needs_clflush(struct drm_i915_gem_object *obj) |
| 71 | { |
| 72 | if (!cpu_cache_is_coherent(obj->base.dev, obj->cache_level)) |
| 73 | return true; |
| 74 | |
| 75 | return obj->pin_display; |
| 76 | } |
| 77 | |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 78 | static inline void i915_gem_object_fence_lost(struct drm_i915_gem_object *obj) |
| 79 | { |
| 80 | if (obj->tiling_mode) |
| 81 | i915_gem_release_mmap(obj); |
| 82 | |
| 83 | /* As we do not have an associated fence register, we will force |
| 84 | * a tiling change if we ever need to acquire one. |
| 85 | */ |
Chris Wilson | 5d82e3e | 2012-04-21 16:23:23 +0100 | [diff] [blame] | 86 | obj->fence_dirty = false; |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 87 | obj->fence_reg = I915_FENCE_REG_NONE; |
| 88 | } |
| 89 | |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 90 | /* some bookkeeping */ |
| 91 | static void i915_gem_info_add_obj(struct drm_i915_private *dev_priv, |
| 92 | size_t size) |
| 93 | { |
Daniel Vetter | c20e835 | 2013-07-24 22:40:23 +0200 | [diff] [blame] | 94 | spin_lock(&dev_priv->mm.object_stat_lock); |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 95 | dev_priv->mm.object_count++; |
| 96 | dev_priv->mm.object_memory += size; |
Daniel Vetter | c20e835 | 2013-07-24 22:40:23 +0200 | [diff] [blame] | 97 | spin_unlock(&dev_priv->mm.object_stat_lock); |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 98 | } |
| 99 | |
| 100 | static void i915_gem_info_remove_obj(struct drm_i915_private *dev_priv, |
| 101 | size_t size) |
| 102 | { |
Daniel Vetter | c20e835 | 2013-07-24 22:40:23 +0200 | [diff] [blame] | 103 | spin_lock(&dev_priv->mm.object_stat_lock); |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 104 | dev_priv->mm.object_count--; |
| 105 | dev_priv->mm.object_memory -= size; |
Daniel Vetter | c20e835 | 2013-07-24 22:40:23 +0200 | [diff] [blame] | 106 | spin_unlock(&dev_priv->mm.object_stat_lock); |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 107 | } |
| 108 | |
Chris Wilson | 21dd373 | 2011-01-26 15:55:56 +0000 | [diff] [blame] | 109 | static int |
Daniel Vetter | 33196de | 2012-11-14 17:14:05 +0100 | [diff] [blame] | 110 | i915_gem_wait_for_error(struct i915_gpu_error *error) |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 111 | { |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 112 | int ret; |
| 113 | |
Daniel Vetter | 7abb690 | 2013-05-24 21:29:32 +0200 | [diff] [blame] | 114 | #define EXIT_COND (!i915_reset_in_progress(error) || \ |
| 115 | i915_terminally_wedged(error)) |
Daniel Vetter | 1f83fee | 2012-11-15 17:17:22 +0100 | [diff] [blame] | 116 | if (EXIT_COND) |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 117 | return 0; |
| 118 | |
Daniel Vetter | 0a6759c | 2012-07-04 22:18:41 +0200 | [diff] [blame] | 119 | /* |
| 120 | * Only wait 10 seconds for the gpu reset to complete to avoid hanging |
| 121 | * userspace. If it takes that long something really bad is going on and |
| 122 | * we should simply try to bail out and fail as gracefully as possible. |
| 123 | */ |
Daniel Vetter | 1f83fee | 2012-11-15 17:17:22 +0100 | [diff] [blame] | 124 | ret = wait_event_interruptible_timeout(error->reset_queue, |
| 125 | EXIT_COND, |
| 126 | 10*HZ); |
Daniel Vetter | 0a6759c | 2012-07-04 22:18:41 +0200 | [diff] [blame] | 127 | if (ret == 0) { |
| 128 | DRM_ERROR("Timed out waiting for the gpu reset to complete\n"); |
| 129 | return -EIO; |
| 130 | } else if (ret < 0) { |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 131 | return ret; |
Daniel Vetter | 0a6759c | 2012-07-04 22:18:41 +0200 | [diff] [blame] | 132 | } |
Daniel Vetter | 1f83fee | 2012-11-15 17:17:22 +0100 | [diff] [blame] | 133 | #undef EXIT_COND |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 134 | |
Chris Wilson | 21dd373 | 2011-01-26 15:55:56 +0000 | [diff] [blame] | 135 | return 0; |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 136 | } |
| 137 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 138 | int i915_mutex_lock_interruptible(struct drm_device *dev) |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 139 | { |
Daniel Vetter | 33196de | 2012-11-14 17:14:05 +0100 | [diff] [blame] | 140 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 141 | int ret; |
| 142 | |
Daniel Vetter | 33196de | 2012-11-14 17:14:05 +0100 | [diff] [blame] | 143 | ret = i915_gem_wait_for_error(&dev_priv->gpu_error); |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 144 | if (ret) |
| 145 | return ret; |
| 146 | |
| 147 | ret = mutex_lock_interruptible(&dev->struct_mutex); |
| 148 | if (ret) |
| 149 | return ret; |
| 150 | |
Chris Wilson | 23bc598 | 2010-09-29 16:10:57 +0100 | [diff] [blame] | 151 | WARN_ON(i915_verify_lists(dev)); |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 152 | return 0; |
| 153 | } |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 154 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 155 | int |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 156 | i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 157 | struct drm_file *file) |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 158 | { |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 159 | struct drm_i915_private *dev_priv = dev->dev_private; |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 160 | struct drm_i915_gem_get_aperture *args = data; |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 161 | struct drm_i915_gem_object *obj; |
| 162 | size_t pinned; |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 163 | |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 164 | pinned = 0; |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 165 | mutex_lock(&dev->struct_mutex); |
Ben Widawsky | 35c20a6 | 2013-05-31 11:28:48 -0700 | [diff] [blame] | 166 | list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) |
Ben Widawsky | d7f46fc | 2013-12-06 14:10:55 -0800 | [diff] [blame] | 167 | if (i915_gem_obj_is_pinned(obj)) |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 168 | pinned += i915_gem_obj_ggtt_size(obj); |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 169 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 170 | |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 171 | args->aper_size = dev_priv->gtt.base.total; |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 172 | args->aper_available_size = args->aper_size - pinned; |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 173 | |
Eric Anholt | 5a125c3 | 2008-10-22 21:40:13 -0700 | [diff] [blame] | 174 | return 0; |
| 175 | } |
| 176 | |
Chris Wilson | 6a2c423 | 2014-11-04 04:51:40 -0800 | [diff] [blame] | 177 | static int |
| 178 | i915_gem_object_get_pages_phys(struct drm_i915_gem_object *obj) |
Chris Wilson | 0073115 | 2014-05-21 12:42:56 +0100 | [diff] [blame] | 179 | { |
Chris Wilson | 6a2c423 | 2014-11-04 04:51:40 -0800 | [diff] [blame] | 180 | struct address_space *mapping = file_inode(obj->base.filp)->i_mapping; |
| 181 | char *vaddr = obj->phys_handle->vaddr; |
| 182 | struct sg_table *st; |
| 183 | struct scatterlist *sg; |
| 184 | int i; |
Chris Wilson | 0073115 | 2014-05-21 12:42:56 +0100 | [diff] [blame] | 185 | |
Chris Wilson | 6a2c423 | 2014-11-04 04:51:40 -0800 | [diff] [blame] | 186 | if (WARN_ON(i915_gem_object_needs_bit17_swizzle(obj))) |
| 187 | return -EINVAL; |
Chris Wilson | 0073115 | 2014-05-21 12:42:56 +0100 | [diff] [blame] | 188 | |
Chris Wilson | 6a2c423 | 2014-11-04 04:51:40 -0800 | [diff] [blame] | 189 | for (i = 0; i < obj->base.size / PAGE_SIZE; i++) { |
| 190 | struct page *page; |
| 191 | char *src; |
| 192 | |
| 193 | page = shmem_read_mapping_page(mapping, i); |
| 194 | if (IS_ERR(page)) |
| 195 | return PTR_ERR(page); |
| 196 | |
| 197 | src = kmap_atomic(page); |
| 198 | memcpy(vaddr, src, PAGE_SIZE); |
| 199 | drm_clflush_virt_range(vaddr, PAGE_SIZE); |
| 200 | kunmap_atomic(src); |
| 201 | |
| 202 | page_cache_release(page); |
| 203 | vaddr += PAGE_SIZE; |
| 204 | } |
| 205 | |
| 206 | i915_gem_chipset_flush(obj->base.dev); |
| 207 | |
| 208 | st = kmalloc(sizeof(*st), GFP_KERNEL); |
| 209 | if (st == NULL) |
| 210 | return -ENOMEM; |
| 211 | |
| 212 | if (sg_alloc_table(st, 1, GFP_KERNEL)) { |
| 213 | kfree(st); |
| 214 | return -ENOMEM; |
| 215 | } |
| 216 | |
| 217 | sg = st->sgl; |
| 218 | sg->offset = 0; |
| 219 | sg->length = obj->base.size; |
| 220 | |
| 221 | sg_dma_address(sg) = obj->phys_handle->busaddr; |
| 222 | sg_dma_len(sg) = obj->base.size; |
| 223 | |
| 224 | obj->pages = st; |
| 225 | obj->has_dma_mapping = true; |
| 226 | return 0; |
| 227 | } |
| 228 | |
| 229 | static void |
| 230 | i915_gem_object_put_pages_phys(struct drm_i915_gem_object *obj) |
| 231 | { |
| 232 | int ret; |
| 233 | |
| 234 | BUG_ON(obj->madv == __I915_MADV_PURGED); |
| 235 | |
| 236 | ret = i915_gem_object_set_to_cpu_domain(obj, true); |
| 237 | if (ret) { |
| 238 | /* In the event of a disaster, abandon all caches and |
| 239 | * hope for the best. |
| 240 | */ |
| 241 | WARN_ON(ret != -EIO); |
| 242 | obj->base.read_domains = obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
| 243 | } |
| 244 | |
| 245 | if (obj->madv == I915_MADV_DONTNEED) |
| 246 | obj->dirty = 0; |
| 247 | |
| 248 | if (obj->dirty) { |
Chris Wilson | 0073115 | 2014-05-21 12:42:56 +0100 | [diff] [blame] | 249 | struct address_space *mapping = file_inode(obj->base.filp)->i_mapping; |
Chris Wilson | 6a2c423 | 2014-11-04 04:51:40 -0800 | [diff] [blame] | 250 | char *vaddr = obj->phys_handle->vaddr; |
Chris Wilson | 0073115 | 2014-05-21 12:42:56 +0100 | [diff] [blame] | 251 | int i; |
| 252 | |
| 253 | for (i = 0; i < obj->base.size / PAGE_SIZE; i++) { |
Chris Wilson | 6a2c423 | 2014-11-04 04:51:40 -0800 | [diff] [blame] | 254 | struct page *page; |
| 255 | char *dst; |
Chris Wilson | 0073115 | 2014-05-21 12:42:56 +0100 | [diff] [blame] | 256 | |
Chris Wilson | 6a2c423 | 2014-11-04 04:51:40 -0800 | [diff] [blame] | 257 | page = shmem_read_mapping_page(mapping, i); |
| 258 | if (IS_ERR(page)) |
| 259 | continue; |
| 260 | |
| 261 | dst = kmap_atomic(page); |
| 262 | drm_clflush_virt_range(vaddr, PAGE_SIZE); |
| 263 | memcpy(dst, vaddr, PAGE_SIZE); |
| 264 | kunmap_atomic(dst); |
| 265 | |
| 266 | set_page_dirty(page); |
| 267 | if (obj->madv == I915_MADV_WILLNEED) |
Chris Wilson | 0073115 | 2014-05-21 12:42:56 +0100 | [diff] [blame] | 268 | mark_page_accessed(page); |
Chris Wilson | 6a2c423 | 2014-11-04 04:51:40 -0800 | [diff] [blame] | 269 | page_cache_release(page); |
Chris Wilson | 0073115 | 2014-05-21 12:42:56 +0100 | [diff] [blame] | 270 | vaddr += PAGE_SIZE; |
| 271 | } |
Chris Wilson | 6a2c423 | 2014-11-04 04:51:40 -0800 | [diff] [blame] | 272 | obj->dirty = 0; |
Chris Wilson | 0073115 | 2014-05-21 12:42:56 +0100 | [diff] [blame] | 273 | } |
| 274 | |
Chris Wilson | 6a2c423 | 2014-11-04 04:51:40 -0800 | [diff] [blame] | 275 | sg_free_table(obj->pages); |
| 276 | kfree(obj->pages); |
| 277 | |
| 278 | obj->has_dma_mapping = false; |
| 279 | } |
| 280 | |
| 281 | static void |
| 282 | i915_gem_object_release_phys(struct drm_i915_gem_object *obj) |
| 283 | { |
| 284 | drm_pci_free(obj->base.dev, obj->phys_handle); |
| 285 | } |
| 286 | |
| 287 | static const struct drm_i915_gem_object_ops i915_gem_phys_ops = { |
| 288 | .get_pages = i915_gem_object_get_pages_phys, |
| 289 | .put_pages = i915_gem_object_put_pages_phys, |
| 290 | .release = i915_gem_object_release_phys, |
| 291 | }; |
| 292 | |
| 293 | static int |
| 294 | drop_pages(struct drm_i915_gem_object *obj) |
| 295 | { |
| 296 | struct i915_vma *vma, *next; |
| 297 | int ret; |
| 298 | |
| 299 | drm_gem_object_reference(&obj->base); |
| 300 | list_for_each_entry_safe(vma, next, &obj->vma_list, vma_link) |
| 301 | if (i915_vma_unbind(vma)) |
| 302 | break; |
| 303 | |
| 304 | ret = i915_gem_object_put_pages(obj); |
| 305 | drm_gem_object_unreference(&obj->base); |
| 306 | |
| 307 | return ret; |
Chris Wilson | 0073115 | 2014-05-21 12:42:56 +0100 | [diff] [blame] | 308 | } |
| 309 | |
| 310 | int |
| 311 | i915_gem_object_attach_phys(struct drm_i915_gem_object *obj, |
| 312 | int align) |
| 313 | { |
| 314 | drm_dma_handle_t *phys; |
Chris Wilson | 6a2c423 | 2014-11-04 04:51:40 -0800 | [diff] [blame] | 315 | int ret; |
Chris Wilson | 0073115 | 2014-05-21 12:42:56 +0100 | [diff] [blame] | 316 | |
| 317 | if (obj->phys_handle) { |
| 318 | if ((unsigned long)obj->phys_handle->vaddr & (align -1)) |
| 319 | return -EBUSY; |
| 320 | |
| 321 | return 0; |
| 322 | } |
| 323 | |
| 324 | if (obj->madv != I915_MADV_WILLNEED) |
| 325 | return -EFAULT; |
| 326 | |
| 327 | if (obj->base.filp == NULL) |
| 328 | return -EINVAL; |
| 329 | |
Chris Wilson | 6a2c423 | 2014-11-04 04:51:40 -0800 | [diff] [blame] | 330 | ret = drop_pages(obj); |
| 331 | if (ret) |
| 332 | return ret; |
| 333 | |
Chris Wilson | 0073115 | 2014-05-21 12:42:56 +0100 | [diff] [blame] | 334 | /* create a new object */ |
| 335 | phys = drm_pci_alloc(obj->base.dev, obj->base.size, align); |
| 336 | if (!phys) |
| 337 | return -ENOMEM; |
| 338 | |
Chris Wilson | 0073115 | 2014-05-21 12:42:56 +0100 | [diff] [blame] | 339 | obj->phys_handle = phys; |
Chris Wilson | 6a2c423 | 2014-11-04 04:51:40 -0800 | [diff] [blame] | 340 | obj->ops = &i915_gem_phys_ops; |
| 341 | |
| 342 | return i915_gem_object_get_pages(obj); |
Chris Wilson | 0073115 | 2014-05-21 12:42:56 +0100 | [diff] [blame] | 343 | } |
| 344 | |
| 345 | static int |
| 346 | i915_gem_phys_pwrite(struct drm_i915_gem_object *obj, |
| 347 | struct drm_i915_gem_pwrite *args, |
| 348 | struct drm_file *file_priv) |
| 349 | { |
| 350 | struct drm_device *dev = obj->base.dev; |
| 351 | void *vaddr = obj->phys_handle->vaddr + args->offset; |
| 352 | char __user *user_data = to_user_ptr(args->data_ptr); |
Chris Wilson | 6a2c423 | 2014-11-04 04:51:40 -0800 | [diff] [blame] | 353 | int ret; |
| 354 | |
| 355 | /* We manually control the domain here and pretend that it |
| 356 | * remains coherent i.e. in the GTT domain, like shmem_pwrite. |
| 357 | */ |
| 358 | ret = i915_gem_object_wait_rendering(obj, false); |
| 359 | if (ret) |
| 360 | return ret; |
Chris Wilson | 0073115 | 2014-05-21 12:42:56 +0100 | [diff] [blame] | 361 | |
| 362 | if (__copy_from_user_inatomic_nocache(vaddr, user_data, args->size)) { |
| 363 | unsigned long unwritten; |
| 364 | |
| 365 | /* The physical object once assigned is fixed for the lifetime |
| 366 | * of the obj, so we can safely drop the lock and continue |
| 367 | * to access vaddr. |
| 368 | */ |
| 369 | mutex_unlock(&dev->struct_mutex); |
| 370 | unwritten = copy_from_user(vaddr, user_data, args->size); |
| 371 | mutex_lock(&dev->struct_mutex); |
| 372 | if (unwritten) |
| 373 | return -EFAULT; |
| 374 | } |
| 375 | |
Chris Wilson | 6a2c423 | 2014-11-04 04:51:40 -0800 | [diff] [blame] | 376 | drm_clflush_virt_range(vaddr, args->size); |
Chris Wilson | 0073115 | 2014-05-21 12:42:56 +0100 | [diff] [blame] | 377 | i915_gem_chipset_flush(dev); |
| 378 | return 0; |
| 379 | } |
| 380 | |
Chris Wilson | 42dcedd | 2012-11-15 11:32:30 +0000 | [diff] [blame] | 381 | void *i915_gem_object_alloc(struct drm_device *dev) |
| 382 | { |
| 383 | struct drm_i915_private *dev_priv = dev->dev_private; |
Joe Perches | fac15c1 | 2013-08-29 13:11:07 -0700 | [diff] [blame] | 384 | return kmem_cache_zalloc(dev_priv->slab, GFP_KERNEL); |
Chris Wilson | 42dcedd | 2012-11-15 11:32:30 +0000 | [diff] [blame] | 385 | } |
| 386 | |
| 387 | void i915_gem_object_free(struct drm_i915_gem_object *obj) |
| 388 | { |
| 389 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
| 390 | kmem_cache_free(dev_priv->slab, obj); |
| 391 | } |
| 392 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 393 | static int |
| 394 | i915_gem_create(struct drm_file *file, |
| 395 | struct drm_device *dev, |
| 396 | uint64_t size, |
| 397 | uint32_t *handle_p) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 398 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 399 | struct drm_i915_gem_object *obj; |
Pekka Paalanen | a1a2d1d | 2009-08-23 12:40:55 +0300 | [diff] [blame] | 400 | int ret; |
| 401 | u32 handle; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 402 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 403 | size = roundup(size, PAGE_SIZE); |
Chris Wilson | 8ffc024 | 2011-09-14 14:14:28 +0200 | [diff] [blame] | 404 | if (size == 0) |
| 405 | return -EINVAL; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 406 | |
| 407 | /* Allocate the new object */ |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 408 | obj = i915_gem_alloc_object(dev, size); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 409 | if (obj == NULL) |
| 410 | return -ENOMEM; |
| 411 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 412 | ret = drm_gem_handle_create(file, &obj->base, &handle); |
Chris Wilson | 202f2fe | 2010-10-14 13:20:40 +0100 | [diff] [blame] | 413 | /* drop reference from allocate - handle holds it now */ |
Daniel Vetter | d861e33 | 2013-07-24 23:25:03 +0200 | [diff] [blame] | 414 | drm_gem_object_unreference_unlocked(&obj->base); |
| 415 | if (ret) |
| 416 | return ret; |
Chris Wilson | 202f2fe | 2010-10-14 13:20:40 +0100 | [diff] [blame] | 417 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 418 | *handle_p = handle; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 419 | return 0; |
| 420 | } |
| 421 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 422 | int |
| 423 | i915_gem_dumb_create(struct drm_file *file, |
| 424 | struct drm_device *dev, |
| 425 | struct drm_mode_create_dumb *args) |
| 426 | { |
| 427 | /* have to work out size/pitch and return them */ |
Paulo Zanoni | de45eaf | 2013-10-18 18:48:24 -0300 | [diff] [blame] | 428 | args->pitch = ALIGN(args->width * DIV_ROUND_UP(args->bpp, 8), 64); |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 429 | args->size = args->pitch * args->height; |
| 430 | return i915_gem_create(file, dev, |
Dave Airlie | da6b51d | 2014-12-24 13:11:17 +1000 | [diff] [blame] | 431 | args->size, &args->handle); |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 432 | } |
| 433 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 434 | /** |
| 435 | * Creates a new mm object and returns a handle to it. |
| 436 | */ |
| 437 | int |
| 438 | i915_gem_create_ioctl(struct drm_device *dev, void *data, |
| 439 | struct drm_file *file) |
| 440 | { |
| 441 | struct drm_i915_gem_create *args = data; |
Daniel Vetter | 63ed2cb | 2012-04-23 16:50:50 +0200 | [diff] [blame] | 442 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 443 | return i915_gem_create(file, dev, |
Dave Airlie | da6b51d | 2014-12-24 13:11:17 +1000 | [diff] [blame] | 444 | args->size, &args->handle); |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 445 | } |
| 446 | |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 447 | static inline int |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 448 | __copy_to_user_swizzled(char __user *cpu_vaddr, |
| 449 | const char *gpu_vaddr, int gpu_offset, |
| 450 | int length) |
| 451 | { |
| 452 | int ret, cpu_offset = 0; |
| 453 | |
| 454 | while (length > 0) { |
| 455 | int cacheline_end = ALIGN(gpu_offset + 1, 64); |
| 456 | int this_length = min(cacheline_end - gpu_offset, length); |
| 457 | int swizzled_gpu_offset = gpu_offset ^ 64; |
| 458 | |
| 459 | ret = __copy_to_user(cpu_vaddr + cpu_offset, |
| 460 | gpu_vaddr + swizzled_gpu_offset, |
| 461 | this_length); |
| 462 | if (ret) |
| 463 | return ret + length; |
| 464 | |
| 465 | cpu_offset += this_length; |
| 466 | gpu_offset += this_length; |
| 467 | length -= this_length; |
| 468 | } |
| 469 | |
| 470 | return 0; |
| 471 | } |
| 472 | |
| 473 | static inline int |
Ben Widawsky | 4f0c7cf | 2012-04-16 14:07:47 -0700 | [diff] [blame] | 474 | __copy_from_user_swizzled(char *gpu_vaddr, int gpu_offset, |
| 475 | const char __user *cpu_vaddr, |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 476 | int length) |
| 477 | { |
| 478 | int ret, cpu_offset = 0; |
| 479 | |
| 480 | while (length > 0) { |
| 481 | int cacheline_end = ALIGN(gpu_offset + 1, 64); |
| 482 | int this_length = min(cacheline_end - gpu_offset, length); |
| 483 | int swizzled_gpu_offset = gpu_offset ^ 64; |
| 484 | |
| 485 | ret = __copy_from_user(gpu_vaddr + swizzled_gpu_offset, |
| 486 | cpu_vaddr + cpu_offset, |
| 487 | this_length); |
| 488 | if (ret) |
| 489 | return ret + length; |
| 490 | |
| 491 | cpu_offset += this_length; |
| 492 | gpu_offset += this_length; |
| 493 | length -= this_length; |
| 494 | } |
| 495 | |
| 496 | return 0; |
| 497 | } |
| 498 | |
Brad Volkin | 4c914c0 | 2014-02-18 10:15:45 -0800 | [diff] [blame] | 499 | /* |
| 500 | * Pins the specified object's pages and synchronizes the object with |
| 501 | * GPU accesses. Sets needs_clflush to non-zero if the caller should |
| 502 | * flush the object from the CPU cache. |
| 503 | */ |
| 504 | int i915_gem_obj_prepare_shmem_read(struct drm_i915_gem_object *obj, |
| 505 | int *needs_clflush) |
| 506 | { |
| 507 | int ret; |
| 508 | |
| 509 | *needs_clflush = 0; |
| 510 | |
| 511 | if (!obj->base.filp) |
| 512 | return -EINVAL; |
| 513 | |
| 514 | if (!(obj->base.read_domains & I915_GEM_DOMAIN_CPU)) { |
| 515 | /* If we're not in the cpu read domain, set ourself into the gtt |
| 516 | * read domain and manually flush cachelines (if required). This |
| 517 | * optimizes for the case when the gpu will dirty the data |
| 518 | * anyway again before the next pread happens. */ |
| 519 | *needs_clflush = !cpu_cache_is_coherent(obj->base.dev, |
| 520 | obj->cache_level); |
| 521 | ret = i915_gem_object_wait_rendering(obj, true); |
| 522 | if (ret) |
| 523 | return ret; |
Chris Wilson | c8725f3 | 2014-03-17 12:21:55 +0000 | [diff] [blame] | 524 | |
| 525 | i915_gem_object_retire(obj); |
Brad Volkin | 4c914c0 | 2014-02-18 10:15:45 -0800 | [diff] [blame] | 526 | } |
| 527 | |
| 528 | ret = i915_gem_object_get_pages(obj); |
| 529 | if (ret) |
| 530 | return ret; |
| 531 | |
| 532 | i915_gem_object_pin_pages(obj); |
| 533 | |
| 534 | return ret; |
| 535 | } |
| 536 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 537 | /* Per-page copy function for the shmem pread fastpath. |
| 538 | * Flushes invalid cachelines before reading the target if |
| 539 | * needs_clflush is set. */ |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 540 | static int |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 541 | shmem_pread_fast(struct page *page, int shmem_page_offset, int page_length, |
| 542 | char __user *user_data, |
| 543 | bool page_do_bit17_swizzling, bool needs_clflush) |
| 544 | { |
| 545 | char *vaddr; |
| 546 | int ret; |
| 547 | |
Daniel Vetter | e7e58eb | 2012-03-25 19:47:43 +0200 | [diff] [blame] | 548 | if (unlikely(page_do_bit17_swizzling)) |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 549 | return -EINVAL; |
| 550 | |
| 551 | vaddr = kmap_atomic(page); |
| 552 | if (needs_clflush) |
| 553 | drm_clflush_virt_range(vaddr + shmem_page_offset, |
| 554 | page_length); |
| 555 | ret = __copy_to_user_inatomic(user_data, |
| 556 | vaddr + shmem_page_offset, |
| 557 | page_length); |
| 558 | kunmap_atomic(vaddr); |
| 559 | |
Chris Wilson | f60d7f0 | 2012-09-04 21:02:56 +0100 | [diff] [blame] | 560 | return ret ? -EFAULT : 0; |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 561 | } |
| 562 | |
Daniel Vetter | 23c18c7 | 2012-03-25 19:47:42 +0200 | [diff] [blame] | 563 | static void |
| 564 | shmem_clflush_swizzled_range(char *addr, unsigned long length, |
| 565 | bool swizzled) |
| 566 | { |
Daniel Vetter | e7e58eb | 2012-03-25 19:47:43 +0200 | [diff] [blame] | 567 | if (unlikely(swizzled)) { |
Daniel Vetter | 23c18c7 | 2012-03-25 19:47:42 +0200 | [diff] [blame] | 568 | unsigned long start = (unsigned long) addr; |
| 569 | unsigned long end = (unsigned long) addr + length; |
| 570 | |
| 571 | /* For swizzling simply ensure that we always flush both |
| 572 | * channels. Lame, but simple and it works. Swizzled |
| 573 | * pwrite/pread is far from a hotpath - current userspace |
| 574 | * doesn't use it at all. */ |
| 575 | start = round_down(start, 128); |
| 576 | end = round_up(end, 128); |
| 577 | |
| 578 | drm_clflush_virt_range((void *)start, end - start); |
| 579 | } else { |
| 580 | drm_clflush_virt_range(addr, length); |
| 581 | } |
| 582 | |
| 583 | } |
| 584 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 585 | /* Only difference to the fast-path function is that this can handle bit17 |
| 586 | * and uses non-atomic copy and kmap functions. */ |
| 587 | static int |
| 588 | shmem_pread_slow(struct page *page, int shmem_page_offset, int page_length, |
| 589 | char __user *user_data, |
| 590 | bool page_do_bit17_swizzling, bool needs_clflush) |
| 591 | { |
| 592 | char *vaddr; |
| 593 | int ret; |
| 594 | |
| 595 | vaddr = kmap(page); |
| 596 | if (needs_clflush) |
Daniel Vetter | 23c18c7 | 2012-03-25 19:47:42 +0200 | [diff] [blame] | 597 | shmem_clflush_swizzled_range(vaddr + shmem_page_offset, |
| 598 | page_length, |
| 599 | page_do_bit17_swizzling); |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 600 | |
| 601 | if (page_do_bit17_swizzling) |
| 602 | ret = __copy_to_user_swizzled(user_data, |
| 603 | vaddr, shmem_page_offset, |
| 604 | page_length); |
| 605 | else |
| 606 | ret = __copy_to_user(user_data, |
| 607 | vaddr + shmem_page_offset, |
| 608 | page_length); |
| 609 | kunmap(page); |
| 610 | |
Chris Wilson | f60d7f0 | 2012-09-04 21:02:56 +0100 | [diff] [blame] | 611 | return ret ? - EFAULT : 0; |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 612 | } |
| 613 | |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 614 | static int |
Daniel Vetter | dbf7bff | 2012-03-25 19:47:29 +0200 | [diff] [blame] | 615 | i915_gem_shmem_pread(struct drm_device *dev, |
| 616 | struct drm_i915_gem_object *obj, |
| 617 | struct drm_i915_gem_pread *args, |
| 618 | struct drm_file *file) |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 619 | { |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 620 | char __user *user_data; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 621 | ssize_t remain; |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 622 | loff_t offset; |
Ben Widawsky | eb2c0c8 | 2012-02-15 14:42:43 +0100 | [diff] [blame] | 623 | int shmem_page_offset, page_length, ret = 0; |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 624 | int obj_do_bit17_swizzling, page_do_bit17_swizzling; |
Daniel Vetter | 96d79b5 | 2012-03-25 19:47:36 +0200 | [diff] [blame] | 625 | int prefaulted = 0; |
Daniel Vetter | 8489731 | 2012-03-25 19:47:31 +0200 | [diff] [blame] | 626 | int needs_clflush = 0; |
Imre Deak | 67d5a50 | 2013-02-18 19:28:02 +0200 | [diff] [blame] | 627 | struct sg_page_iter sg_iter; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 628 | |
Ville Syrjälä | 2bb4629 | 2013-02-22 16:12:51 +0200 | [diff] [blame] | 629 | user_data = to_user_ptr(args->data_ptr); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 630 | remain = args->size; |
| 631 | |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 632 | obj_do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 633 | |
Brad Volkin | 4c914c0 | 2014-02-18 10:15:45 -0800 | [diff] [blame] | 634 | ret = i915_gem_obj_prepare_shmem_read(obj, &needs_clflush); |
Chris Wilson | f60d7f0 | 2012-09-04 21:02:56 +0100 | [diff] [blame] | 635 | if (ret) |
| 636 | return ret; |
| 637 | |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 638 | offset = args->offset; |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 639 | |
Imre Deak | 67d5a50 | 2013-02-18 19:28:02 +0200 | [diff] [blame] | 640 | for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, |
| 641 | offset >> PAGE_SHIFT) { |
Imre Deak | 2db76d7 | 2013-03-26 15:14:18 +0200 | [diff] [blame] | 642 | struct page *page = sg_page_iter_page(&sg_iter); |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 643 | |
| 644 | if (remain <= 0) |
| 645 | break; |
| 646 | |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 647 | /* Operation in this page |
| 648 | * |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 649 | * shmem_page_offset = offset within page in shmem file |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 650 | * page_length = bytes to copy for this page |
| 651 | */ |
Chris Wilson | c8cbbb8 | 2011-05-12 22:17:11 +0100 | [diff] [blame] | 652 | shmem_page_offset = offset_in_page(offset); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 653 | page_length = remain; |
| 654 | if ((shmem_page_offset + page_length) > PAGE_SIZE) |
| 655 | page_length = PAGE_SIZE - shmem_page_offset; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 656 | |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 657 | page_do_bit17_swizzling = obj_do_bit17_swizzling && |
| 658 | (page_to_phys(page) & (1 << 17)) != 0; |
| 659 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 660 | ret = shmem_pread_fast(page, shmem_page_offset, page_length, |
| 661 | user_data, page_do_bit17_swizzling, |
| 662 | needs_clflush); |
| 663 | if (ret == 0) |
| 664 | goto next_page; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 665 | |
Daniel Vetter | dbf7bff | 2012-03-25 19:47:29 +0200 | [diff] [blame] | 666 | mutex_unlock(&dev->struct_mutex); |
| 667 | |
Jani Nikula | d330a95 | 2014-01-21 11:24:25 +0200 | [diff] [blame] | 668 | if (likely(!i915.prefault_disable) && !prefaulted) { |
Daniel Vetter | f56f821 | 2012-03-25 19:47:41 +0200 | [diff] [blame] | 669 | ret = fault_in_multipages_writeable(user_data, remain); |
Daniel Vetter | 96d79b5 | 2012-03-25 19:47:36 +0200 | [diff] [blame] | 670 | /* Userspace is tricking us, but we've already clobbered |
| 671 | * its pages with the prefault and promised to write the |
| 672 | * data up to the first fault. Hence ignore any errors |
| 673 | * and just continue. */ |
| 674 | (void)ret; |
| 675 | prefaulted = 1; |
| 676 | } |
| 677 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 678 | ret = shmem_pread_slow(page, shmem_page_offset, page_length, |
| 679 | user_data, page_do_bit17_swizzling, |
| 680 | needs_clflush); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 681 | |
Daniel Vetter | dbf7bff | 2012-03-25 19:47:29 +0200 | [diff] [blame] | 682 | mutex_lock(&dev->struct_mutex); |
Chris Wilson | f60d7f0 | 2012-09-04 21:02:56 +0100 | [diff] [blame] | 683 | |
Chris Wilson | f60d7f0 | 2012-09-04 21:02:56 +0100 | [diff] [blame] | 684 | if (ret) |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 685 | goto out; |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 686 | |
Chris Wilson | 17793c9 | 2014-03-07 08:30:36 +0000 | [diff] [blame] | 687 | next_page: |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 688 | remain -= page_length; |
Daniel Vetter | 8461d22 | 2011-12-14 13:57:32 +0100 | [diff] [blame] | 689 | user_data += page_length; |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 690 | offset += page_length; |
| 691 | } |
| 692 | |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 693 | out: |
Chris Wilson | f60d7f0 | 2012-09-04 21:02:56 +0100 | [diff] [blame] | 694 | i915_gem_object_unpin_pages(obj); |
| 695 | |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 696 | return ret; |
| 697 | } |
| 698 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 699 | /** |
| 700 | * Reads data from the object referenced by handle. |
| 701 | * |
| 702 | * On error, the contents of *data are undefined. |
| 703 | */ |
| 704 | int |
| 705 | i915_gem_pread_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 706 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 707 | { |
| 708 | struct drm_i915_gem_pread *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 709 | struct drm_i915_gem_object *obj; |
Chris Wilson | 35b62a8 | 2010-09-26 20:23:38 +0100 | [diff] [blame] | 710 | int ret = 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 711 | |
Chris Wilson | 51311d0 | 2010-11-17 09:10:42 +0000 | [diff] [blame] | 712 | if (args->size == 0) |
| 713 | return 0; |
| 714 | |
| 715 | if (!access_ok(VERIFY_WRITE, |
Ville Syrjälä | 2bb4629 | 2013-02-22 16:12:51 +0200 | [diff] [blame] | 716 | to_user_ptr(args->data_ptr), |
Chris Wilson | 51311d0 | 2010-11-17 09:10:42 +0000 | [diff] [blame] | 717 | args->size)) |
| 718 | return -EFAULT; |
| 719 | |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 720 | ret = i915_mutex_lock_interruptible(dev); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 721 | if (ret) |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 722 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 723 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 724 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 725 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 726 | ret = -ENOENT; |
| 727 | goto unlock; |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 728 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 729 | |
Chris Wilson | 7dcd249 | 2010-09-26 20:21:44 +0100 | [diff] [blame] | 730 | /* Bounds check source. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 731 | if (args->offset > obj->base.size || |
| 732 | args->size > obj->base.size - args->offset) { |
Chris Wilson | ce9d419 | 2010-09-26 20:50:05 +0100 | [diff] [blame] | 733 | ret = -EINVAL; |
Chris Wilson | 35b62a8 | 2010-09-26 20:23:38 +0100 | [diff] [blame] | 734 | goto out; |
Chris Wilson | ce9d419 | 2010-09-26 20:50:05 +0100 | [diff] [blame] | 735 | } |
| 736 | |
Daniel Vetter | 1286ff7 | 2012-05-10 15:25:09 +0200 | [diff] [blame] | 737 | /* prime objects have no backing filp to GEM pread/pwrite |
| 738 | * pages from. |
| 739 | */ |
| 740 | if (!obj->base.filp) { |
| 741 | ret = -EINVAL; |
| 742 | goto out; |
| 743 | } |
| 744 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 745 | trace_i915_gem_object_pread(obj, args->offset, args->size); |
| 746 | |
Daniel Vetter | dbf7bff | 2012-03-25 19:47:29 +0200 | [diff] [blame] | 747 | ret = i915_gem_shmem_pread(dev, obj, args, file); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 748 | |
Chris Wilson | 35b62a8 | 2010-09-26 20:23:38 +0100 | [diff] [blame] | 749 | out: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 750 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 751 | unlock: |
Chris Wilson | 4f27b75 | 2010-10-14 15:26:45 +0100 | [diff] [blame] | 752 | mutex_unlock(&dev->struct_mutex); |
Eric Anholt | eb01459 | 2009-03-10 11:44:52 -0700 | [diff] [blame] | 753 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 754 | } |
| 755 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 756 | /* This is the fast write path which cannot handle |
| 757 | * page faults in the source data |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame] | 758 | */ |
Linus Torvalds | 9b7530cc | 2008-10-20 14:16:43 -0700 | [diff] [blame] | 759 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 760 | static inline int |
| 761 | fast_user_write(struct io_mapping *mapping, |
| 762 | loff_t page_base, int page_offset, |
| 763 | char __user *user_data, |
| 764 | int length) |
| 765 | { |
Ben Widawsky | 4f0c7cf | 2012-04-16 14:07:47 -0700 | [diff] [blame] | 766 | void __iomem *vaddr_atomic; |
| 767 | void *vaddr; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 768 | unsigned long unwritten; |
| 769 | |
Peter Zijlstra | 3e4d3af | 2010-10-26 14:21:51 -0700 | [diff] [blame] | 770 | vaddr_atomic = io_mapping_map_atomic_wc(mapping, page_base); |
Ben Widawsky | 4f0c7cf | 2012-04-16 14:07:47 -0700 | [diff] [blame] | 771 | /* We can use the cpu mem copy function because this is X86. */ |
| 772 | vaddr = (void __force*)vaddr_atomic + page_offset; |
| 773 | unwritten = __copy_from_user_inatomic_nocache(vaddr, |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 774 | user_data, length); |
Peter Zijlstra | 3e4d3af | 2010-10-26 14:21:51 -0700 | [diff] [blame] | 775 | io_mapping_unmap_atomic(vaddr_atomic); |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 776 | return unwritten; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 777 | } |
| 778 | |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 779 | /** |
| 780 | * This is the fast pwrite path, where we copy the data directly from the |
| 781 | * user into the GTT, uncached. |
| 782 | */ |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 783 | static int |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 784 | i915_gem_gtt_pwrite_fast(struct drm_device *dev, |
| 785 | struct drm_i915_gem_object *obj, |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 786 | struct drm_i915_gem_pwrite *args, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 787 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 788 | { |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 789 | struct drm_i915_private *dev_priv = dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 790 | ssize_t remain; |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 791 | loff_t offset, page_base; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 792 | char __user *user_data; |
Daniel Vetter | 935aaa6 | 2012-03-25 19:47:35 +0200 | [diff] [blame] | 793 | int page_offset, page_length, ret; |
| 794 | |
Daniel Vetter | 1ec9e26 | 2014-02-14 14:01:11 +0100 | [diff] [blame] | 795 | ret = i915_gem_obj_ggtt_pin(obj, 0, PIN_MAPPABLE | PIN_NONBLOCK); |
Daniel Vetter | 935aaa6 | 2012-03-25 19:47:35 +0200 | [diff] [blame] | 796 | if (ret) |
| 797 | goto out; |
| 798 | |
| 799 | ret = i915_gem_object_set_to_gtt_domain(obj, true); |
| 800 | if (ret) |
| 801 | goto out_unpin; |
| 802 | |
| 803 | ret = i915_gem_object_put_fence(obj); |
| 804 | if (ret) |
| 805 | goto out_unpin; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 806 | |
Ville Syrjälä | 2bb4629 | 2013-02-22 16:12:51 +0200 | [diff] [blame] | 807 | user_data = to_user_ptr(args->data_ptr); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 808 | remain = args->size; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 809 | |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 810 | offset = i915_gem_obj_ggtt_offset(obj) + args->offset; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 811 | |
| 812 | while (remain > 0) { |
| 813 | /* Operation in this page |
| 814 | * |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 815 | * page_base = page offset within aperture |
| 816 | * page_offset = offset within page |
| 817 | * page_length = bytes to copy for this page |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 818 | */ |
Chris Wilson | c8cbbb8 | 2011-05-12 22:17:11 +0100 | [diff] [blame] | 819 | page_base = offset & PAGE_MASK; |
| 820 | page_offset = offset_in_page(offset); |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 821 | page_length = remain; |
| 822 | if ((page_offset + remain) > PAGE_SIZE) |
| 823 | page_length = PAGE_SIZE - page_offset; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 824 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 825 | /* If we get a fault while copying data, then (presumably) our |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 826 | * source page isn't available. Return the error and we'll |
| 827 | * retry in the slow path. |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 828 | */ |
Ben Widawsky | 5d4545a | 2013-01-17 12:45:15 -0800 | [diff] [blame] | 829 | if (fast_user_write(dev_priv->gtt.mappable, page_base, |
Daniel Vetter | 935aaa6 | 2012-03-25 19:47:35 +0200 | [diff] [blame] | 830 | page_offset, user_data, page_length)) { |
| 831 | ret = -EFAULT; |
| 832 | goto out_unpin; |
| 833 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 834 | |
Keith Packard | 0839ccb | 2008-10-30 19:38:48 -0700 | [diff] [blame] | 835 | remain -= page_length; |
| 836 | user_data += page_length; |
| 837 | offset += page_length; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 838 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 839 | |
Daniel Vetter | 935aaa6 | 2012-03-25 19:47:35 +0200 | [diff] [blame] | 840 | out_unpin: |
Ben Widawsky | d7f46fc | 2013-12-06 14:10:55 -0800 | [diff] [blame] | 841 | i915_gem_object_ggtt_unpin(obj); |
Daniel Vetter | 935aaa6 | 2012-03-25 19:47:35 +0200 | [diff] [blame] | 842 | out: |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 843 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 844 | } |
| 845 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 846 | /* Per-page copy function for the shmem pwrite fastpath. |
| 847 | * Flushes invalid cachelines before writing to the target if |
| 848 | * needs_clflush_before is set and flushes out any written cachelines after |
| 849 | * writing if needs_clflush is set. */ |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 850 | static int |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 851 | shmem_pwrite_fast(struct page *page, int shmem_page_offset, int page_length, |
| 852 | char __user *user_data, |
| 853 | bool page_do_bit17_swizzling, |
| 854 | bool needs_clflush_before, |
| 855 | bool needs_clflush_after) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 856 | { |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 857 | char *vaddr; |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 858 | int ret; |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 859 | |
Daniel Vetter | e7e58eb | 2012-03-25 19:47:43 +0200 | [diff] [blame] | 860 | if (unlikely(page_do_bit17_swizzling)) |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 861 | return -EINVAL; |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 862 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 863 | vaddr = kmap_atomic(page); |
| 864 | if (needs_clflush_before) |
| 865 | drm_clflush_virt_range(vaddr + shmem_page_offset, |
| 866 | page_length); |
Chris Wilson | c2831a9 | 2014-03-07 08:30:37 +0000 | [diff] [blame] | 867 | ret = __copy_from_user_inatomic(vaddr + shmem_page_offset, |
| 868 | user_data, page_length); |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 869 | if (needs_clflush_after) |
| 870 | drm_clflush_virt_range(vaddr + shmem_page_offset, |
| 871 | page_length); |
| 872 | kunmap_atomic(vaddr); |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 873 | |
Chris Wilson | 755d221 | 2012-09-04 21:02:55 +0100 | [diff] [blame] | 874 | return ret ? -EFAULT : 0; |
Eric Anholt | 3de09aa | 2009-03-09 09:42:23 -0700 | [diff] [blame] | 875 | } |
| 876 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 877 | /* Only difference to the fast-path function is that this can handle bit17 |
| 878 | * and uses non-atomic copy and kmap functions. */ |
Eric Anholt | 3043c60 | 2008-10-02 12:24:47 -0700 | [diff] [blame] | 879 | static int |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 880 | shmem_pwrite_slow(struct page *page, int shmem_page_offset, int page_length, |
| 881 | char __user *user_data, |
| 882 | bool page_do_bit17_swizzling, |
| 883 | bool needs_clflush_before, |
| 884 | bool needs_clflush_after) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 885 | { |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 886 | char *vaddr; |
| 887 | int ret; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 888 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 889 | vaddr = kmap(page); |
Daniel Vetter | e7e58eb | 2012-03-25 19:47:43 +0200 | [diff] [blame] | 890 | if (unlikely(needs_clflush_before || page_do_bit17_swizzling)) |
Daniel Vetter | 23c18c7 | 2012-03-25 19:47:42 +0200 | [diff] [blame] | 891 | shmem_clflush_swizzled_range(vaddr + shmem_page_offset, |
| 892 | page_length, |
| 893 | page_do_bit17_swizzling); |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 894 | if (page_do_bit17_swizzling) |
| 895 | ret = __copy_from_user_swizzled(vaddr, shmem_page_offset, |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 896 | user_data, |
| 897 | page_length); |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 898 | else |
| 899 | ret = __copy_from_user(vaddr + shmem_page_offset, |
| 900 | user_data, |
| 901 | page_length); |
| 902 | if (needs_clflush_after) |
Daniel Vetter | 23c18c7 | 2012-03-25 19:47:42 +0200 | [diff] [blame] | 903 | shmem_clflush_swizzled_range(vaddr + shmem_page_offset, |
| 904 | page_length, |
| 905 | page_do_bit17_swizzling); |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 906 | kunmap(page); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 907 | |
Chris Wilson | 755d221 | 2012-09-04 21:02:55 +0100 | [diff] [blame] | 908 | return ret ? -EFAULT : 0; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 909 | } |
| 910 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 911 | static int |
Daniel Vetter | e244a44 | 2012-03-25 19:47:28 +0200 | [diff] [blame] | 912 | i915_gem_shmem_pwrite(struct drm_device *dev, |
| 913 | struct drm_i915_gem_object *obj, |
| 914 | struct drm_i915_gem_pwrite *args, |
| 915 | struct drm_file *file) |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 916 | { |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 917 | ssize_t remain; |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 918 | loff_t offset; |
| 919 | char __user *user_data; |
Ben Widawsky | eb2c0c8 | 2012-02-15 14:42:43 +0100 | [diff] [blame] | 920 | int shmem_page_offset, page_length, ret = 0; |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 921 | int obj_do_bit17_swizzling, page_do_bit17_swizzling; |
Daniel Vetter | e244a44 | 2012-03-25 19:47:28 +0200 | [diff] [blame] | 922 | int hit_slowpath = 0; |
Daniel Vetter | 5864288 | 2012-03-25 19:47:37 +0200 | [diff] [blame] | 923 | int needs_clflush_after = 0; |
| 924 | int needs_clflush_before = 0; |
Imre Deak | 67d5a50 | 2013-02-18 19:28:02 +0200 | [diff] [blame] | 925 | struct sg_page_iter sg_iter; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 926 | |
Ville Syrjälä | 2bb4629 | 2013-02-22 16:12:51 +0200 | [diff] [blame] | 927 | user_data = to_user_ptr(args->data_ptr); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 928 | remain = args->size; |
| 929 | |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 930 | obj_do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 931 | |
Daniel Vetter | 5864288 | 2012-03-25 19:47:37 +0200 | [diff] [blame] | 932 | if (obj->base.write_domain != I915_GEM_DOMAIN_CPU) { |
| 933 | /* If we're not in the cpu write domain, set ourself into the gtt |
| 934 | * write domain and manually flush cachelines (if required). This |
| 935 | * optimizes for the case when the gpu will use the data |
| 936 | * right away and we therefore have to clflush anyway. */ |
Chris Wilson | 2c22569 | 2013-08-09 12:26:45 +0100 | [diff] [blame] | 937 | needs_clflush_after = cpu_write_needs_clflush(obj); |
Ben Widawsky | 23f5448 | 2013-09-11 14:57:48 -0700 | [diff] [blame] | 938 | ret = i915_gem_object_wait_rendering(obj, false); |
| 939 | if (ret) |
| 940 | return ret; |
Chris Wilson | c8725f3 | 2014-03-17 12:21:55 +0000 | [diff] [blame] | 941 | |
| 942 | i915_gem_object_retire(obj); |
Daniel Vetter | 5864288 | 2012-03-25 19:47:37 +0200 | [diff] [blame] | 943 | } |
Chris Wilson | c76ce03 | 2013-08-08 14:41:03 +0100 | [diff] [blame] | 944 | /* Same trick applies to invalidate partially written cachelines read |
| 945 | * before writing. */ |
| 946 | if ((obj->base.read_domains & I915_GEM_DOMAIN_CPU) == 0) |
| 947 | needs_clflush_before = |
| 948 | !cpu_cache_is_coherent(dev, obj->cache_level); |
Daniel Vetter | 5864288 | 2012-03-25 19:47:37 +0200 | [diff] [blame] | 949 | |
Chris Wilson | 755d221 | 2012-09-04 21:02:55 +0100 | [diff] [blame] | 950 | ret = i915_gem_object_get_pages(obj); |
| 951 | if (ret) |
| 952 | return ret; |
| 953 | |
| 954 | i915_gem_object_pin_pages(obj); |
| 955 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 956 | offset = args->offset; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 957 | obj->dirty = 1; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 958 | |
Imre Deak | 67d5a50 | 2013-02-18 19:28:02 +0200 | [diff] [blame] | 959 | for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, |
| 960 | offset >> PAGE_SHIFT) { |
Imre Deak | 2db76d7 | 2013-03-26 15:14:18 +0200 | [diff] [blame] | 961 | struct page *page = sg_page_iter_page(&sg_iter); |
Daniel Vetter | 5864288 | 2012-03-25 19:47:37 +0200 | [diff] [blame] | 962 | int partial_cacheline_write; |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 963 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 964 | if (remain <= 0) |
| 965 | break; |
| 966 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 967 | /* Operation in this page |
| 968 | * |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 969 | * shmem_page_offset = offset within page in shmem file |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 970 | * page_length = bytes to copy for this page |
| 971 | */ |
Chris Wilson | c8cbbb8 | 2011-05-12 22:17:11 +0100 | [diff] [blame] | 972 | shmem_page_offset = offset_in_page(offset); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 973 | |
| 974 | page_length = remain; |
| 975 | if ((shmem_page_offset + page_length) > PAGE_SIZE) |
| 976 | page_length = PAGE_SIZE - shmem_page_offset; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 977 | |
Daniel Vetter | 5864288 | 2012-03-25 19:47:37 +0200 | [diff] [blame] | 978 | /* If we don't overwrite a cacheline completely we need to be |
| 979 | * careful to have up-to-date data by first clflushing. Don't |
| 980 | * overcomplicate things and flush the entire patch. */ |
| 981 | partial_cacheline_write = needs_clflush_before && |
| 982 | ((shmem_page_offset | page_length) |
| 983 | & (boot_cpu_data.x86_clflush_size - 1)); |
| 984 | |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 985 | page_do_bit17_swizzling = obj_do_bit17_swizzling && |
| 986 | (page_to_phys(page) & (1 << 17)) != 0; |
| 987 | |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 988 | ret = shmem_pwrite_fast(page, shmem_page_offset, page_length, |
| 989 | user_data, page_do_bit17_swizzling, |
| 990 | partial_cacheline_write, |
| 991 | needs_clflush_after); |
| 992 | if (ret == 0) |
| 993 | goto next_page; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 994 | |
Daniel Vetter | e244a44 | 2012-03-25 19:47:28 +0200 | [diff] [blame] | 995 | hit_slowpath = 1; |
Daniel Vetter | e244a44 | 2012-03-25 19:47:28 +0200 | [diff] [blame] | 996 | mutex_unlock(&dev->struct_mutex); |
Daniel Vetter | d174bd6 | 2012-03-25 19:47:40 +0200 | [diff] [blame] | 997 | ret = shmem_pwrite_slow(page, shmem_page_offset, page_length, |
| 998 | user_data, page_do_bit17_swizzling, |
| 999 | partial_cacheline_write, |
| 1000 | needs_clflush_after); |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 1001 | |
Daniel Vetter | e244a44 | 2012-03-25 19:47:28 +0200 | [diff] [blame] | 1002 | mutex_lock(&dev->struct_mutex); |
Chris Wilson | 755d221 | 2012-09-04 21:02:55 +0100 | [diff] [blame] | 1003 | |
Chris Wilson | 755d221 | 2012-09-04 21:02:55 +0100 | [diff] [blame] | 1004 | if (ret) |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 1005 | goto out; |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 1006 | |
Chris Wilson | 17793c9 | 2014-03-07 08:30:36 +0000 | [diff] [blame] | 1007 | next_page: |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 1008 | remain -= page_length; |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 1009 | user_data += page_length; |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 1010 | offset += page_length; |
| 1011 | } |
| 1012 | |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 1013 | out: |
Chris Wilson | 755d221 | 2012-09-04 21:02:55 +0100 | [diff] [blame] | 1014 | i915_gem_object_unpin_pages(obj); |
| 1015 | |
Daniel Vetter | e244a44 | 2012-03-25 19:47:28 +0200 | [diff] [blame] | 1016 | if (hit_slowpath) { |
Daniel Vetter | 8dcf015 | 2012-11-15 16:53:58 +0100 | [diff] [blame] | 1017 | /* |
| 1018 | * Fixup: Flush cpu caches in case we didn't flush the dirty |
| 1019 | * cachelines in-line while writing and the object moved |
| 1020 | * out of the cpu write domain while we've dropped the lock. |
| 1021 | */ |
| 1022 | if (!needs_clflush_after && |
| 1023 | obj->base.write_domain != I915_GEM_DOMAIN_CPU) { |
Chris Wilson | 000433b | 2013-08-08 14:41:09 +0100 | [diff] [blame] | 1024 | if (i915_gem_clflush_object(obj, obj->pin_display)) |
| 1025 | i915_gem_chipset_flush(dev); |
Daniel Vetter | e244a44 | 2012-03-25 19:47:28 +0200 | [diff] [blame] | 1026 | } |
Daniel Vetter | 8c59967 | 2011-12-14 13:57:31 +0100 | [diff] [blame] | 1027 | } |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 1028 | |
Daniel Vetter | 5864288 | 2012-03-25 19:47:37 +0200 | [diff] [blame] | 1029 | if (needs_clflush_after) |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1030 | i915_gem_chipset_flush(dev); |
Daniel Vetter | 5864288 | 2012-03-25 19:47:37 +0200 | [diff] [blame] | 1031 | |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 1032 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1033 | } |
| 1034 | |
| 1035 | /** |
| 1036 | * Writes data to the object referenced by handle. |
| 1037 | * |
| 1038 | * On error, the contents of the buffer that were to be modified are undefined. |
| 1039 | */ |
| 1040 | int |
| 1041 | i915_gem_pwrite_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 1042 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1043 | { |
Imre Deak | 5d77d9c | 2014-11-12 16:40:35 +0200 | [diff] [blame] | 1044 | struct drm_i915_private *dev_priv = dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1045 | struct drm_i915_gem_pwrite *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1046 | struct drm_i915_gem_object *obj; |
Chris Wilson | 51311d0 | 2010-11-17 09:10:42 +0000 | [diff] [blame] | 1047 | int ret; |
| 1048 | |
| 1049 | if (args->size == 0) |
| 1050 | return 0; |
| 1051 | |
| 1052 | if (!access_ok(VERIFY_READ, |
Ville Syrjälä | 2bb4629 | 2013-02-22 16:12:51 +0200 | [diff] [blame] | 1053 | to_user_ptr(args->data_ptr), |
Chris Wilson | 51311d0 | 2010-11-17 09:10:42 +0000 | [diff] [blame] | 1054 | args->size)) |
| 1055 | return -EFAULT; |
| 1056 | |
Jani Nikula | d330a95 | 2014-01-21 11:24:25 +0200 | [diff] [blame] | 1057 | if (likely(!i915.prefault_disable)) { |
Xiong Zhang | 0b74b50 | 2013-07-19 13:51:24 +0800 | [diff] [blame] | 1058 | ret = fault_in_multipages_readable(to_user_ptr(args->data_ptr), |
| 1059 | args->size); |
| 1060 | if (ret) |
| 1061 | return -EFAULT; |
| 1062 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1063 | |
Imre Deak | 5d77d9c | 2014-11-12 16:40:35 +0200 | [diff] [blame] | 1064 | intel_runtime_pm_get(dev_priv); |
| 1065 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1066 | ret = i915_mutex_lock_interruptible(dev); |
| 1067 | if (ret) |
Imre Deak | 5d77d9c | 2014-11-12 16:40:35 +0200 | [diff] [blame] | 1068 | goto put_rpm; |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1069 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1070 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 1071 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1072 | ret = -ENOENT; |
| 1073 | goto unlock; |
| 1074 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1075 | |
Chris Wilson | 7dcd249 | 2010-09-26 20:21:44 +0100 | [diff] [blame] | 1076 | /* Bounds check destination. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1077 | if (args->offset > obj->base.size || |
| 1078 | args->size > obj->base.size - args->offset) { |
Chris Wilson | ce9d419 | 2010-09-26 20:50:05 +0100 | [diff] [blame] | 1079 | ret = -EINVAL; |
Chris Wilson | 35b62a8 | 2010-09-26 20:23:38 +0100 | [diff] [blame] | 1080 | goto out; |
Chris Wilson | ce9d419 | 2010-09-26 20:50:05 +0100 | [diff] [blame] | 1081 | } |
| 1082 | |
Daniel Vetter | 1286ff7 | 2012-05-10 15:25:09 +0200 | [diff] [blame] | 1083 | /* prime objects have no backing filp to GEM pread/pwrite |
| 1084 | * pages from. |
| 1085 | */ |
| 1086 | if (!obj->base.filp) { |
| 1087 | ret = -EINVAL; |
| 1088 | goto out; |
| 1089 | } |
| 1090 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1091 | trace_i915_gem_object_pwrite(obj, args->offset, args->size); |
| 1092 | |
Daniel Vetter | 935aaa6 | 2012-03-25 19:47:35 +0200 | [diff] [blame] | 1093 | ret = -EFAULT; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1094 | /* We can only do the GTT pwrite on untiled buffers, as otherwise |
| 1095 | * it would end up going through the fenced access, and we'll get |
| 1096 | * different detiling behavior between reading and writing. |
| 1097 | * pread/pwrite currently are reading and writing from the CPU |
| 1098 | * perspective, requiring manual detiling by the client. |
| 1099 | */ |
Chris Wilson | 2c22569 | 2013-08-09 12:26:45 +0100 | [diff] [blame] | 1100 | if (obj->tiling_mode == I915_TILING_NONE && |
| 1101 | obj->base.write_domain != I915_GEM_DOMAIN_CPU && |
| 1102 | cpu_write_needs_clflush(obj)) { |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 1103 | ret = i915_gem_gtt_pwrite_fast(dev, obj, args, file); |
Daniel Vetter | 935aaa6 | 2012-03-25 19:47:35 +0200 | [diff] [blame] | 1104 | /* Note that the gtt paths might fail with non-page-backed user |
| 1105 | * pointers (e.g. gtt mappings when moving data between |
| 1106 | * textures). Fallback to the shmem path in that case. */ |
Eric Anholt | 40123c1 | 2009-03-09 13:42:30 -0700 | [diff] [blame] | 1107 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1108 | |
Chris Wilson | 6a2c423 | 2014-11-04 04:51:40 -0800 | [diff] [blame] | 1109 | if (ret == -EFAULT || ret == -ENOSPC) { |
| 1110 | if (obj->phys_handle) |
| 1111 | ret = i915_gem_phys_pwrite(obj, args, file); |
| 1112 | else |
| 1113 | ret = i915_gem_shmem_pwrite(dev, obj, args, file); |
| 1114 | } |
Daniel Vetter | 5c0480f | 2011-12-14 13:57:30 +0100 | [diff] [blame] | 1115 | |
Chris Wilson | 35b62a8 | 2010-09-26 20:23:38 +0100 | [diff] [blame] | 1116 | out: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1117 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1118 | unlock: |
Chris Wilson | fbd5a26 | 2010-10-14 15:03:58 +0100 | [diff] [blame] | 1119 | mutex_unlock(&dev->struct_mutex); |
Imre Deak | 5d77d9c | 2014-11-12 16:40:35 +0200 | [diff] [blame] | 1120 | put_rpm: |
| 1121 | intel_runtime_pm_put(dev_priv); |
| 1122 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1123 | return ret; |
| 1124 | } |
| 1125 | |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1126 | int |
Daniel Vetter | 33196de | 2012-11-14 17:14:05 +0100 | [diff] [blame] | 1127 | i915_gem_check_wedge(struct i915_gpu_error *error, |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1128 | bool interruptible) |
| 1129 | { |
Daniel Vetter | 1f83fee | 2012-11-15 17:17:22 +0100 | [diff] [blame] | 1130 | if (i915_reset_in_progress(error)) { |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1131 | /* Non-interruptible callers can't handle -EAGAIN, hence return |
| 1132 | * -EIO unconditionally for these. */ |
| 1133 | if (!interruptible) |
| 1134 | return -EIO; |
| 1135 | |
Daniel Vetter | 1f83fee | 2012-11-15 17:17:22 +0100 | [diff] [blame] | 1136 | /* Recovery complete, but the reset failed ... */ |
| 1137 | if (i915_terminally_wedged(error)) |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1138 | return -EIO; |
| 1139 | |
McAulay, Alistair | 6689c16 | 2014-08-15 18:51:35 +0100 | [diff] [blame] | 1140 | /* |
| 1141 | * Check if GPU Reset is in progress - we need intel_ring_begin |
| 1142 | * to work properly to reinit the hw state while the gpu is |
| 1143 | * still marked as reset-in-progress. Handle this with a flag. |
| 1144 | */ |
| 1145 | if (!error->reload_in_reset) |
| 1146 | return -EAGAIN; |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1147 | } |
| 1148 | |
| 1149 | return 0; |
| 1150 | } |
| 1151 | |
| 1152 | /* |
John Harrison | b6660d5 | 2014-11-24 18:49:30 +0000 | [diff] [blame] | 1153 | * Compare arbitrary request against outstanding lazy request. Emit on match. |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1154 | */ |
Sourab Gupta | 84c33a6 | 2014-06-02 16:47:17 +0530 | [diff] [blame] | 1155 | int |
John Harrison | b6660d5 | 2014-11-24 18:49:30 +0000 | [diff] [blame] | 1156 | i915_gem_check_olr(struct drm_i915_gem_request *req) |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1157 | { |
| 1158 | int ret; |
| 1159 | |
John Harrison | b6660d5 | 2014-11-24 18:49:30 +0000 | [diff] [blame] | 1160 | WARN_ON(!mutex_is_locked(&req->ring->dev->struct_mutex)); |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1161 | |
| 1162 | ret = 0; |
John Harrison | b6660d5 | 2014-11-24 18:49:30 +0000 | [diff] [blame] | 1163 | if (req == req->ring->outstanding_lazy_request) |
John Harrison | 9400ae5 | 2014-11-24 18:49:36 +0000 | [diff] [blame] | 1164 | ret = i915_add_request(req->ring); |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1165 | |
| 1166 | return ret; |
| 1167 | } |
| 1168 | |
Chris Wilson | 094f9a5 | 2013-09-25 17:34:55 +0100 | [diff] [blame] | 1169 | static void fake_irq(unsigned long data) |
| 1170 | { |
| 1171 | wake_up_process((struct task_struct *)data); |
| 1172 | } |
| 1173 | |
| 1174 | static bool missed_irq(struct drm_i915_private *dev_priv, |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 1175 | struct intel_engine_cs *ring) |
Chris Wilson | 094f9a5 | 2013-09-25 17:34:55 +0100 | [diff] [blame] | 1176 | { |
| 1177 | return test_bit(ring->id, &dev_priv->gpu_error.missed_irq_rings); |
| 1178 | } |
| 1179 | |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 1180 | static bool can_wait_boost(struct drm_i915_file_private *file_priv) |
| 1181 | { |
| 1182 | if (file_priv == NULL) |
| 1183 | return true; |
| 1184 | |
| 1185 | return !atomic_xchg(&file_priv->rps_wait_boost, true); |
| 1186 | } |
| 1187 | |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1188 | /** |
John Harrison | 9c65481 | 2014-11-24 18:49:35 +0000 | [diff] [blame] | 1189 | * __i915_wait_request - wait until execution of request has finished |
| 1190 | * @req: duh! |
| 1191 | * @reset_counter: reset sequence associated with the given request |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1192 | * @interruptible: do an interruptible wait (normally yes) |
| 1193 | * @timeout: in - how long to wait (NULL forever); out - how much time remaining |
| 1194 | * |
Daniel Vetter | f69061b | 2012-12-06 09:01:42 +0100 | [diff] [blame] | 1195 | * Note: It is of utmost importance that the passed in seqno and reset_counter |
| 1196 | * values have been read by the caller in an smp safe manner. Where read-side |
| 1197 | * locks are involved, it is sufficient to read the reset_counter before |
| 1198 | * unlocking the lock that protects the seqno. For lockless tricks, the |
| 1199 | * reset_counter _must_ be read before, and an appropriate smp_rmb must be |
| 1200 | * inserted. |
| 1201 | * |
John Harrison | 9c65481 | 2014-11-24 18:49:35 +0000 | [diff] [blame] | 1202 | * Returns 0 if the request was found within the alloted time. Else returns the |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1203 | * errno with remaining time filled in timeout argument. |
| 1204 | */ |
John Harrison | 9c65481 | 2014-11-24 18:49:35 +0000 | [diff] [blame] | 1205 | int __i915_wait_request(struct drm_i915_gem_request *req, |
Daniel Vetter | f69061b | 2012-12-06 09:01:42 +0100 | [diff] [blame] | 1206 | unsigned reset_counter, |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 1207 | bool interruptible, |
Thomas Gleixner | 5ed0bdf | 2014-07-16 21:05:06 +0000 | [diff] [blame] | 1208 | s64 *timeout, |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 1209 | struct drm_i915_file_private *file_priv) |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1210 | { |
John Harrison | 9c65481 | 2014-11-24 18:49:35 +0000 | [diff] [blame] | 1211 | struct intel_engine_cs *ring = i915_gem_request_get_ring(req); |
Damien Lespiau | 3d13ef2 | 2014-02-07 19:12:47 +0000 | [diff] [blame] | 1212 | struct drm_device *dev = ring->dev; |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 1213 | struct drm_i915_private *dev_priv = dev->dev_private; |
Mika Kuoppala | 168c3f2 | 2013-12-12 17:54:42 +0200 | [diff] [blame] | 1214 | const bool irq_test_in_progress = |
| 1215 | ACCESS_ONCE(dev_priv->gpu_error.test_irq_rings) & intel_ring_flag(ring); |
Chris Wilson | 094f9a5 | 2013-09-25 17:34:55 +0100 | [diff] [blame] | 1216 | DEFINE_WAIT(wait); |
Mika Kuoppala | 47e9766 | 2013-12-10 17:02:43 +0200 | [diff] [blame] | 1217 | unsigned long timeout_expire; |
Thomas Gleixner | 5ed0bdf | 2014-07-16 21:05:06 +0000 | [diff] [blame] | 1218 | s64 before, now; |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1219 | int ret; |
| 1220 | |
Jesse Barnes | 9df7575f | 2014-06-20 09:29:20 -0700 | [diff] [blame] | 1221 | WARN(!intel_irqs_enabled(dev_priv), "IRQs disabled"); |
Paulo Zanoni | c67a470 | 2013-08-19 13:18:09 -0300 | [diff] [blame] | 1222 | |
John Harrison | 1b5a433 | 2014-11-24 18:49:42 +0000 | [diff] [blame] | 1223 | if (i915_gem_request_completed(req, true)) |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1224 | return 0; |
| 1225 | |
Daniel Vetter | 7bd0e22 | 2014-12-04 11:12:54 +0100 | [diff] [blame] | 1226 | timeout_expire = timeout ? |
| 1227 | jiffies + nsecs_to_jiffies_timeout((u64)*timeout) : 0; |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1228 | |
Chris Wilson | ec5cc0f | 2014-06-12 10:28:55 +0100 | [diff] [blame] | 1229 | if (INTEL_INFO(dev)->gen >= 6 && ring->id == RCS && can_wait_boost(file_priv)) { |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 1230 | gen6_rps_boost(dev_priv); |
| 1231 | if (file_priv) |
| 1232 | mod_delayed_work(dev_priv->wq, |
| 1233 | &file_priv->mm.idle_work, |
| 1234 | msecs_to_jiffies(100)); |
| 1235 | } |
| 1236 | |
Mika Kuoppala | 168c3f2 | 2013-12-12 17:54:42 +0200 | [diff] [blame] | 1237 | if (!irq_test_in_progress && WARN_ON(!ring->irq_get(ring))) |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1238 | return -ENODEV; |
| 1239 | |
Chris Wilson | 094f9a5 | 2013-09-25 17:34:55 +0100 | [diff] [blame] | 1240 | /* Record current time in case interrupted by signal, or wedged */ |
John Harrison | 74328ee | 2014-11-24 18:49:38 +0000 | [diff] [blame] | 1241 | trace_i915_gem_request_wait_begin(req); |
Thomas Gleixner | 5ed0bdf | 2014-07-16 21:05:06 +0000 | [diff] [blame] | 1242 | before = ktime_get_raw_ns(); |
Chris Wilson | 094f9a5 | 2013-09-25 17:34:55 +0100 | [diff] [blame] | 1243 | for (;;) { |
| 1244 | struct timer_list timer; |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1245 | |
Chris Wilson | 094f9a5 | 2013-09-25 17:34:55 +0100 | [diff] [blame] | 1246 | prepare_to_wait(&ring->irq_queue, &wait, |
| 1247 | interruptible ? TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE); |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1248 | |
Daniel Vetter | f69061b | 2012-12-06 09:01:42 +0100 | [diff] [blame] | 1249 | /* We need to check whether any gpu reset happened in between |
| 1250 | * the caller grabbing the seqno and now ... */ |
Chris Wilson | 094f9a5 | 2013-09-25 17:34:55 +0100 | [diff] [blame] | 1251 | if (reset_counter != atomic_read(&dev_priv->gpu_error.reset_counter)) { |
| 1252 | /* ... but upgrade the -EAGAIN to an -EIO if the gpu |
| 1253 | * is truely gone. */ |
| 1254 | ret = i915_gem_check_wedge(&dev_priv->gpu_error, interruptible); |
| 1255 | if (ret == 0) |
| 1256 | ret = -EAGAIN; |
| 1257 | break; |
| 1258 | } |
Daniel Vetter | f69061b | 2012-12-06 09:01:42 +0100 | [diff] [blame] | 1259 | |
John Harrison | 1b5a433 | 2014-11-24 18:49:42 +0000 | [diff] [blame] | 1260 | if (i915_gem_request_completed(req, false)) { |
Chris Wilson | 094f9a5 | 2013-09-25 17:34:55 +0100 | [diff] [blame] | 1261 | ret = 0; |
| 1262 | break; |
| 1263 | } |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1264 | |
Chris Wilson | 094f9a5 | 2013-09-25 17:34:55 +0100 | [diff] [blame] | 1265 | if (interruptible && signal_pending(current)) { |
| 1266 | ret = -ERESTARTSYS; |
| 1267 | break; |
| 1268 | } |
| 1269 | |
Mika Kuoppala | 47e9766 | 2013-12-10 17:02:43 +0200 | [diff] [blame] | 1270 | if (timeout && time_after_eq(jiffies, timeout_expire)) { |
Chris Wilson | 094f9a5 | 2013-09-25 17:34:55 +0100 | [diff] [blame] | 1271 | ret = -ETIME; |
| 1272 | break; |
| 1273 | } |
| 1274 | |
| 1275 | timer.function = NULL; |
| 1276 | if (timeout || missed_irq(dev_priv, ring)) { |
Mika Kuoppala | 47e9766 | 2013-12-10 17:02:43 +0200 | [diff] [blame] | 1277 | unsigned long expire; |
| 1278 | |
Chris Wilson | 094f9a5 | 2013-09-25 17:34:55 +0100 | [diff] [blame] | 1279 | setup_timer_on_stack(&timer, fake_irq, (unsigned long)current); |
Mika Kuoppala | 47e9766 | 2013-12-10 17:02:43 +0200 | [diff] [blame] | 1280 | expire = missed_irq(dev_priv, ring) ? jiffies + 1 : timeout_expire; |
Chris Wilson | 094f9a5 | 2013-09-25 17:34:55 +0100 | [diff] [blame] | 1281 | mod_timer(&timer, expire); |
| 1282 | } |
| 1283 | |
Chris Wilson | 5035c27 | 2013-10-04 09:58:46 +0100 | [diff] [blame] | 1284 | io_schedule(); |
Chris Wilson | 094f9a5 | 2013-09-25 17:34:55 +0100 | [diff] [blame] | 1285 | |
Chris Wilson | 094f9a5 | 2013-09-25 17:34:55 +0100 | [diff] [blame] | 1286 | if (timer.function) { |
| 1287 | del_singleshot_timer_sync(&timer); |
| 1288 | destroy_timer_on_stack(&timer); |
| 1289 | } |
| 1290 | } |
Thomas Gleixner | 5ed0bdf | 2014-07-16 21:05:06 +0000 | [diff] [blame] | 1291 | now = ktime_get_raw_ns(); |
John Harrison | 74328ee | 2014-11-24 18:49:38 +0000 | [diff] [blame] | 1292 | trace_i915_gem_request_wait_end(req); |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1293 | |
Mika Kuoppala | 168c3f2 | 2013-12-12 17:54:42 +0200 | [diff] [blame] | 1294 | if (!irq_test_in_progress) |
| 1295 | ring->irq_put(ring); |
Chris Wilson | 094f9a5 | 2013-09-25 17:34:55 +0100 | [diff] [blame] | 1296 | |
| 1297 | finish_wait(&ring->irq_queue, &wait); |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1298 | |
| 1299 | if (timeout) { |
Thomas Gleixner | 5ed0bdf | 2014-07-16 21:05:06 +0000 | [diff] [blame] | 1300 | s64 tres = *timeout - (now - before); |
| 1301 | |
| 1302 | *timeout = tres < 0 ? 0 : tres; |
Daniel Vetter | 9cca306 | 2014-11-28 10:29:55 +0100 | [diff] [blame] | 1303 | |
| 1304 | /* |
| 1305 | * Apparently ktime isn't accurate enough and occasionally has a |
| 1306 | * bit of mismatch in the jiffies<->nsecs<->ktime loop. So patch |
| 1307 | * things up to make the test happy. We allow up to 1 jiffy. |
| 1308 | * |
| 1309 | * This is a regrssion from the timespec->ktime conversion. |
| 1310 | */ |
| 1311 | if (ret == -ETIME && *timeout < jiffies_to_usecs(1)*1000) |
| 1312 | *timeout = 0; |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1313 | } |
| 1314 | |
Chris Wilson | 094f9a5 | 2013-09-25 17:34:55 +0100 | [diff] [blame] | 1315 | return ret; |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1316 | } |
| 1317 | |
| 1318 | /** |
Daniel Vetter | a4b3a57 | 2014-11-26 14:17:05 +0100 | [diff] [blame] | 1319 | * Waits for a request to be signaled, and cleans up the |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1320 | * request and object lists appropriately for that event. |
| 1321 | */ |
| 1322 | int |
Daniel Vetter | a4b3a57 | 2014-11-26 14:17:05 +0100 | [diff] [blame] | 1323 | i915_wait_request(struct drm_i915_gem_request *req) |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1324 | { |
Daniel Vetter | a4b3a57 | 2014-11-26 14:17:05 +0100 | [diff] [blame] | 1325 | struct drm_device *dev; |
| 1326 | struct drm_i915_private *dev_priv; |
| 1327 | bool interruptible; |
Ander Conselvan de Oliveira | 16e9a21 | 2014-11-06 09:26:38 +0200 | [diff] [blame] | 1328 | unsigned reset_counter; |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1329 | int ret; |
| 1330 | |
Daniel Vetter | a4b3a57 | 2014-11-26 14:17:05 +0100 | [diff] [blame] | 1331 | BUG_ON(req == NULL); |
| 1332 | |
| 1333 | dev = req->ring->dev; |
| 1334 | dev_priv = dev->dev_private; |
| 1335 | interruptible = dev_priv->mm.interruptible; |
| 1336 | |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1337 | BUG_ON(!mutex_is_locked(&dev->struct_mutex)); |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1338 | |
Daniel Vetter | 33196de | 2012-11-14 17:14:05 +0100 | [diff] [blame] | 1339 | ret = i915_gem_check_wedge(&dev_priv->gpu_error, interruptible); |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1340 | if (ret) |
| 1341 | return ret; |
| 1342 | |
Daniel Vetter | a4b3a57 | 2014-11-26 14:17:05 +0100 | [diff] [blame] | 1343 | ret = i915_gem_check_olr(req); |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1344 | if (ret) |
| 1345 | return ret; |
| 1346 | |
Ander Conselvan de Oliveira | 16e9a21 | 2014-11-06 09:26:38 +0200 | [diff] [blame] | 1347 | reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter); |
Daniel Vetter | a4b3a57 | 2014-11-26 14:17:05 +0100 | [diff] [blame] | 1348 | i915_gem_request_reference(req); |
John Harrison | 9c65481 | 2014-11-24 18:49:35 +0000 | [diff] [blame] | 1349 | ret = __i915_wait_request(req, reset_counter, |
| 1350 | interruptible, NULL, NULL); |
Daniel Vetter | a4b3a57 | 2014-11-26 14:17:05 +0100 | [diff] [blame] | 1351 | i915_gem_request_unreference(req); |
| 1352 | return ret; |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1353 | } |
| 1354 | |
Chris Wilson | d26e3af | 2013-06-29 22:05:26 +0100 | [diff] [blame] | 1355 | static int |
John Harrison | 8e639549 | 2014-10-30 18:40:53 +0000 | [diff] [blame] | 1356 | i915_gem_object_wait_rendering__tail(struct drm_i915_gem_object *obj) |
Chris Wilson | d26e3af | 2013-06-29 22:05:26 +0100 | [diff] [blame] | 1357 | { |
Chris Wilson | c8725f3 | 2014-03-17 12:21:55 +0000 | [diff] [blame] | 1358 | if (!obj->active) |
| 1359 | return 0; |
Chris Wilson | d26e3af | 2013-06-29 22:05:26 +0100 | [diff] [blame] | 1360 | |
| 1361 | /* Manually manage the write flush as we may have not yet |
| 1362 | * retired the buffer. |
| 1363 | * |
John Harrison | 97b2a6a | 2014-11-24 18:49:26 +0000 | [diff] [blame] | 1364 | * Note that the last_write_req is always the earlier of |
| 1365 | * the two (read/write) requests, so if we haved successfully waited, |
Chris Wilson | d26e3af | 2013-06-29 22:05:26 +0100 | [diff] [blame] | 1366 | * we know we have passed the last write. |
| 1367 | */ |
John Harrison | 97b2a6a | 2014-11-24 18:49:26 +0000 | [diff] [blame] | 1368 | i915_gem_request_assign(&obj->last_write_req, NULL); |
Chris Wilson | d26e3af | 2013-06-29 22:05:26 +0100 | [diff] [blame] | 1369 | |
| 1370 | return 0; |
| 1371 | } |
| 1372 | |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1373 | /** |
| 1374 | * Ensures that all rendering to the object has completed and the object is |
| 1375 | * safe to unbind from the GTT or access from the CPU. |
| 1376 | */ |
| 1377 | static __must_check int |
| 1378 | i915_gem_object_wait_rendering(struct drm_i915_gem_object *obj, |
| 1379 | bool readonly) |
| 1380 | { |
John Harrison | 97b2a6a | 2014-11-24 18:49:26 +0000 | [diff] [blame] | 1381 | struct drm_i915_gem_request *req; |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1382 | int ret; |
| 1383 | |
John Harrison | 97b2a6a | 2014-11-24 18:49:26 +0000 | [diff] [blame] | 1384 | req = readonly ? obj->last_write_req : obj->last_read_req; |
| 1385 | if (!req) |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1386 | return 0; |
| 1387 | |
Daniel Vetter | a4b3a57 | 2014-11-26 14:17:05 +0100 | [diff] [blame] | 1388 | ret = i915_wait_request(req); |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1389 | if (ret) |
| 1390 | return ret; |
| 1391 | |
John Harrison | 8e639549 | 2014-10-30 18:40:53 +0000 | [diff] [blame] | 1392 | return i915_gem_object_wait_rendering__tail(obj); |
Chris Wilson | b361237 | 2012-08-24 09:35:08 +0100 | [diff] [blame] | 1393 | } |
| 1394 | |
Chris Wilson | 3236f57 | 2012-08-24 09:35:09 +0100 | [diff] [blame] | 1395 | /* A nonblocking variant of the above wait. This is a highly dangerous routine |
| 1396 | * as the object state may change during this call. |
| 1397 | */ |
| 1398 | static __must_check int |
| 1399 | i915_gem_object_wait_rendering__nonblocking(struct drm_i915_gem_object *obj, |
Chris Wilson | 6e4930f | 2014-02-07 18:37:06 -0200 | [diff] [blame] | 1400 | struct drm_i915_file_private *file_priv, |
Chris Wilson | 3236f57 | 2012-08-24 09:35:09 +0100 | [diff] [blame] | 1401 | bool readonly) |
| 1402 | { |
John Harrison | 97b2a6a | 2014-11-24 18:49:26 +0000 | [diff] [blame] | 1403 | struct drm_i915_gem_request *req; |
Chris Wilson | 3236f57 | 2012-08-24 09:35:09 +0100 | [diff] [blame] | 1404 | struct drm_device *dev = obj->base.dev; |
| 1405 | struct drm_i915_private *dev_priv = dev->dev_private; |
Daniel Vetter | f69061b | 2012-12-06 09:01:42 +0100 | [diff] [blame] | 1406 | unsigned reset_counter; |
Chris Wilson | 3236f57 | 2012-08-24 09:35:09 +0100 | [diff] [blame] | 1407 | int ret; |
| 1408 | |
| 1409 | BUG_ON(!mutex_is_locked(&dev->struct_mutex)); |
| 1410 | BUG_ON(!dev_priv->mm.interruptible); |
| 1411 | |
John Harrison | 97b2a6a | 2014-11-24 18:49:26 +0000 | [diff] [blame] | 1412 | req = readonly ? obj->last_write_req : obj->last_read_req; |
| 1413 | if (!req) |
Chris Wilson | 3236f57 | 2012-08-24 09:35:09 +0100 | [diff] [blame] | 1414 | return 0; |
| 1415 | |
Daniel Vetter | 33196de | 2012-11-14 17:14:05 +0100 | [diff] [blame] | 1416 | ret = i915_gem_check_wedge(&dev_priv->gpu_error, true); |
Chris Wilson | 3236f57 | 2012-08-24 09:35:09 +0100 | [diff] [blame] | 1417 | if (ret) |
| 1418 | return ret; |
| 1419 | |
John Harrison | b6660d5 | 2014-11-24 18:49:30 +0000 | [diff] [blame] | 1420 | ret = i915_gem_check_olr(req); |
Chris Wilson | 3236f57 | 2012-08-24 09:35:09 +0100 | [diff] [blame] | 1421 | if (ret) |
| 1422 | return ret; |
| 1423 | |
Daniel Vetter | f69061b | 2012-12-06 09:01:42 +0100 | [diff] [blame] | 1424 | reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter); |
John Harrison | ff86588 | 2014-11-24 18:49:28 +0000 | [diff] [blame] | 1425 | i915_gem_request_reference(req); |
Chris Wilson | 3236f57 | 2012-08-24 09:35:09 +0100 | [diff] [blame] | 1426 | mutex_unlock(&dev->struct_mutex); |
John Harrison | 9c65481 | 2014-11-24 18:49:35 +0000 | [diff] [blame] | 1427 | ret = __i915_wait_request(req, reset_counter, true, NULL, file_priv); |
Chris Wilson | 3236f57 | 2012-08-24 09:35:09 +0100 | [diff] [blame] | 1428 | mutex_lock(&dev->struct_mutex); |
John Harrison | ff86588 | 2014-11-24 18:49:28 +0000 | [diff] [blame] | 1429 | i915_gem_request_unreference(req); |
Chris Wilson | d26e3af | 2013-06-29 22:05:26 +0100 | [diff] [blame] | 1430 | if (ret) |
| 1431 | return ret; |
Chris Wilson | 3236f57 | 2012-08-24 09:35:09 +0100 | [diff] [blame] | 1432 | |
John Harrison | 8e639549 | 2014-10-30 18:40:53 +0000 | [diff] [blame] | 1433 | return i915_gem_object_wait_rendering__tail(obj); |
Chris Wilson | 3236f57 | 2012-08-24 09:35:09 +0100 | [diff] [blame] | 1434 | } |
| 1435 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1436 | /** |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1437 | * Called when user space prepares to use an object with the CPU, either |
| 1438 | * through the mmap ioctl's mapping or a GTT mapping. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1439 | */ |
| 1440 | int |
| 1441 | i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1442 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1443 | { |
| 1444 | struct drm_i915_gem_set_domain *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1445 | struct drm_i915_gem_object *obj; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1446 | uint32_t read_domains = args->read_domains; |
| 1447 | uint32_t write_domain = args->write_domain; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1448 | int ret; |
| 1449 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1450 | /* Only handle setting domains to types used by the CPU. */ |
Chris Wilson | 21d509e | 2009-06-06 09:46:02 +0100 | [diff] [blame] | 1451 | if (write_domain & I915_GEM_GPU_DOMAINS) |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1452 | return -EINVAL; |
| 1453 | |
Chris Wilson | 21d509e | 2009-06-06 09:46:02 +0100 | [diff] [blame] | 1454 | if (read_domains & I915_GEM_GPU_DOMAINS) |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1455 | return -EINVAL; |
| 1456 | |
| 1457 | /* Having something in the write domain implies it's in the read |
| 1458 | * domain, and only that read domain. Enforce that in the request. |
| 1459 | */ |
| 1460 | if (write_domain != 0 && read_domains != write_domain) |
| 1461 | return -EINVAL; |
| 1462 | |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1463 | ret = i915_mutex_lock_interruptible(dev); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1464 | if (ret) |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1465 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1466 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1467 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 1468 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1469 | ret = -ENOENT; |
| 1470 | goto unlock; |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1471 | } |
Jesse Barnes | 652c393 | 2009-08-17 13:31:43 -0700 | [diff] [blame] | 1472 | |
Chris Wilson | 3236f57 | 2012-08-24 09:35:09 +0100 | [diff] [blame] | 1473 | /* Try to flush the object off the GPU without holding the lock. |
| 1474 | * We will repeat the flush holding the lock in the normal manner |
| 1475 | * to catch cases where we are gazumped. |
| 1476 | */ |
Chris Wilson | 6e4930f | 2014-02-07 18:37:06 -0200 | [diff] [blame] | 1477 | ret = i915_gem_object_wait_rendering__nonblocking(obj, |
| 1478 | file->driver_priv, |
| 1479 | !write_domain); |
Chris Wilson | 3236f57 | 2012-08-24 09:35:09 +0100 | [diff] [blame] | 1480 | if (ret) |
| 1481 | goto unref; |
| 1482 | |
Chris Wilson | 43566de | 2015-01-02 16:29:29 +0530 | [diff] [blame] | 1483 | if (read_domains & I915_GEM_DOMAIN_GTT) |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1484 | ret = i915_gem_object_set_to_gtt_domain(obj, write_domain != 0); |
Chris Wilson | 43566de | 2015-01-02 16:29:29 +0530 | [diff] [blame] | 1485 | else |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1486 | ret = i915_gem_object_set_to_cpu_domain(obj, write_domain != 0); |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 1487 | |
Chris Wilson | 3236f57 | 2012-08-24 09:35:09 +0100 | [diff] [blame] | 1488 | unref: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1489 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1490 | unlock: |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1491 | mutex_unlock(&dev->struct_mutex); |
| 1492 | return ret; |
| 1493 | } |
| 1494 | |
| 1495 | /** |
| 1496 | * Called when user space has done writes to this buffer |
| 1497 | */ |
| 1498 | int |
| 1499 | i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1500 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1501 | { |
| 1502 | struct drm_i915_gem_sw_finish *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1503 | struct drm_i915_gem_object *obj; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1504 | int ret = 0; |
| 1505 | |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1506 | ret = i915_mutex_lock_interruptible(dev); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1507 | if (ret) |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1508 | return ret; |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1509 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1510 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 1511 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1512 | ret = -ENOENT; |
| 1513 | goto unlock; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1514 | } |
| 1515 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1516 | /* Pinned buffers may be scanout, so flush the cache */ |
Chris Wilson | 2c22569 | 2013-08-09 12:26:45 +0100 | [diff] [blame] | 1517 | if (obj->pin_display) |
Daniel Vetter | e62b59e | 2015-01-21 14:53:48 +0100 | [diff] [blame] | 1518 | i915_gem_object_flush_cpu_write_domain(obj); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 1519 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1520 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1521 | unlock: |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1522 | mutex_unlock(&dev->struct_mutex); |
| 1523 | return ret; |
| 1524 | } |
| 1525 | |
| 1526 | /** |
| 1527 | * Maps the contents of an object, returning the address it is mapped |
| 1528 | * into. |
| 1529 | * |
| 1530 | * While the mapping holds a reference on the contents of the object, it doesn't |
| 1531 | * imply a ref on the object itself. |
Daniel Vetter | 3436738 | 2014-10-16 12:28:18 +0200 | [diff] [blame] | 1532 | * |
| 1533 | * IMPORTANT: |
| 1534 | * |
| 1535 | * DRM driver writers who look a this function as an example for how to do GEM |
| 1536 | * mmap support, please don't implement mmap support like here. The modern way |
| 1537 | * to implement DRM mmap support is with an mmap offset ioctl (like |
| 1538 | * i915_gem_mmap_gtt) and then using the mmap syscall on the DRM fd directly. |
| 1539 | * That way debug tooling like valgrind will understand what's going on, hiding |
| 1540 | * the mmap call in a driver private ioctl will break that. The i915 driver only |
| 1541 | * does cpu mmaps this way because we didn't know better. |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1542 | */ |
| 1543 | int |
| 1544 | i915_gem_mmap_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1545 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1546 | { |
| 1547 | struct drm_i915_gem_mmap *args = data; |
| 1548 | struct drm_gem_object *obj; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1549 | unsigned long addr; |
| 1550 | |
Akash Goel | 1816f92 | 2015-01-02 16:29:30 +0530 | [diff] [blame] | 1551 | if (args->flags & ~(I915_MMAP_WC)) |
| 1552 | return -EINVAL; |
| 1553 | |
| 1554 | if (args->flags & I915_MMAP_WC && !cpu_has_pat) |
| 1555 | return -ENODEV; |
| 1556 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1557 | obj = drm_gem_object_lookup(dev, file, args->handle); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1558 | if (obj == NULL) |
Chris Wilson | bf79cb9 | 2010-08-04 14:19:46 +0100 | [diff] [blame] | 1559 | return -ENOENT; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1560 | |
Daniel Vetter | 1286ff7 | 2012-05-10 15:25:09 +0200 | [diff] [blame] | 1561 | /* prime objects have no backing filp to GEM mmap |
| 1562 | * pages from. |
| 1563 | */ |
| 1564 | if (!obj->filp) { |
| 1565 | drm_gem_object_unreference_unlocked(obj); |
| 1566 | return -EINVAL; |
| 1567 | } |
| 1568 | |
Linus Torvalds | 6be5ceb | 2012-04-20 17:13:58 -0700 | [diff] [blame] | 1569 | addr = vm_mmap(obj->filp, 0, args->size, |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1570 | PROT_READ | PROT_WRITE, MAP_SHARED, |
| 1571 | args->offset); |
Akash Goel | 1816f92 | 2015-01-02 16:29:30 +0530 | [diff] [blame] | 1572 | if (args->flags & I915_MMAP_WC) { |
| 1573 | struct mm_struct *mm = current->mm; |
| 1574 | struct vm_area_struct *vma; |
| 1575 | |
| 1576 | down_write(&mm->mmap_sem); |
| 1577 | vma = find_vma(mm, addr); |
| 1578 | if (vma) |
| 1579 | vma->vm_page_prot = |
| 1580 | pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); |
| 1581 | else |
| 1582 | addr = -ENOMEM; |
| 1583 | up_write(&mm->mmap_sem); |
| 1584 | } |
Luca Barbieri | bc9025b | 2010-02-09 05:49:12 +0000 | [diff] [blame] | 1585 | drm_gem_object_unreference_unlocked(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1586 | if (IS_ERR((void *)addr)) |
| 1587 | return addr; |
| 1588 | |
| 1589 | args->addr_ptr = (uint64_t) addr; |
| 1590 | |
| 1591 | return 0; |
| 1592 | } |
| 1593 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1594 | /** |
| 1595 | * i915_gem_fault - fault a page into the GTT |
| 1596 | * vma: VMA in question |
| 1597 | * vmf: fault info |
| 1598 | * |
| 1599 | * The fault handler is set up by drm_gem_mmap() when a object is GTT mapped |
| 1600 | * from userspace. The fault handler takes care of binding the object to |
| 1601 | * the GTT (if needed), allocating and programming a fence register (again, |
| 1602 | * only if needed based on whether the old reg is still valid or the object |
| 1603 | * is tiled) and inserting a new PTE into the faulting process. |
| 1604 | * |
| 1605 | * Note that the faulting process may involve evicting existing objects |
| 1606 | * from the GTT and/or fence registers to make room. So performance may |
| 1607 | * suffer if the GTT working set is large or there are few fence registers |
| 1608 | * left. |
| 1609 | */ |
| 1610 | int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) |
| 1611 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1612 | struct drm_i915_gem_object *obj = to_intel_bo(vma->vm_private_data); |
| 1613 | struct drm_device *dev = obj->base.dev; |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 1614 | struct drm_i915_private *dev_priv = dev->dev_private; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1615 | pgoff_t page_offset; |
| 1616 | unsigned long pfn; |
| 1617 | int ret = 0; |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 1618 | bool write = !!(vmf->flags & FAULT_FLAG_WRITE); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1619 | |
Paulo Zanoni | f65c916 | 2013-11-27 18:20:34 -0200 | [diff] [blame] | 1620 | intel_runtime_pm_get(dev_priv); |
| 1621 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1622 | /* We don't use vmf->pgoff since that has the fake offset */ |
| 1623 | page_offset = ((unsigned long)vmf->virtual_address - vma->vm_start) >> |
| 1624 | PAGE_SHIFT; |
| 1625 | |
Chris Wilson | d9bc7e9 | 2011-02-07 13:09:31 +0000 | [diff] [blame] | 1626 | ret = i915_mutex_lock_interruptible(dev); |
| 1627 | if (ret) |
| 1628 | goto out; |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 1629 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 1630 | trace_i915_gem_object_fault(obj, page_offset, true, write); |
| 1631 | |
Chris Wilson | 6e4930f | 2014-02-07 18:37:06 -0200 | [diff] [blame] | 1632 | /* Try to flush the object off the GPU first without holding the lock. |
| 1633 | * Upon reacquiring the lock, we will perform our sanity checks and then |
| 1634 | * repeat the flush holding the lock in the normal manner to catch cases |
| 1635 | * where we are gazumped. |
| 1636 | */ |
| 1637 | ret = i915_gem_object_wait_rendering__nonblocking(obj, NULL, !write); |
| 1638 | if (ret) |
| 1639 | goto unlock; |
| 1640 | |
Chris Wilson | eb119bd | 2012-12-16 12:43:36 +0000 | [diff] [blame] | 1641 | /* Access to snoopable pages through the GTT is incoherent. */ |
| 1642 | if (obj->cache_level != I915_CACHE_NONE && !HAS_LLC(dev)) { |
Chris Wilson | ddeff6e | 2014-05-28 16:16:41 +0100 | [diff] [blame] | 1643 | ret = -EFAULT; |
Chris Wilson | eb119bd | 2012-12-16 12:43:36 +0000 | [diff] [blame] | 1644 | goto unlock; |
| 1645 | } |
| 1646 | |
Chris Wilson | d9bc7e9 | 2011-02-07 13:09:31 +0000 | [diff] [blame] | 1647 | /* Now bind it into the GTT if needed */ |
Daniel Vetter | 1ec9e26 | 2014-02-14 14:01:11 +0100 | [diff] [blame] | 1648 | ret = i915_gem_obj_ggtt_pin(obj, 0, PIN_MAPPABLE); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 1649 | if (ret) |
| 1650 | goto unlock; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1651 | |
Chris Wilson | c983930 | 2012-11-20 10:45:17 +0000 | [diff] [blame] | 1652 | ret = i915_gem_object_set_to_gtt_domain(obj, write); |
| 1653 | if (ret) |
| 1654 | goto unpin; |
| 1655 | |
| 1656 | ret = i915_gem_object_get_fence(obj); |
| 1657 | if (ret) |
| 1658 | goto unpin; |
Chris Wilson | 7d1c480 | 2010-08-07 21:45:03 +0100 | [diff] [blame] | 1659 | |
Chris Wilson | b90b91d | 2014-06-10 12:14:40 +0100 | [diff] [blame] | 1660 | /* Finally, remap it using the new GTT offset */ |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 1661 | pfn = dev_priv->gtt.mappable_base + i915_gem_obj_ggtt_offset(obj); |
| 1662 | pfn >>= PAGE_SHIFT; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1663 | |
Chris Wilson | b90b91d | 2014-06-10 12:14:40 +0100 | [diff] [blame] | 1664 | if (!obj->fault_mappable) { |
Ville Syrjälä | beff0d0 | 2014-06-17 21:03:00 +0300 | [diff] [blame] | 1665 | unsigned long size = min_t(unsigned long, |
| 1666 | vma->vm_end - vma->vm_start, |
| 1667 | obj->base.size); |
Chris Wilson | b90b91d | 2014-06-10 12:14:40 +0100 | [diff] [blame] | 1668 | int i; |
| 1669 | |
Ville Syrjälä | beff0d0 | 2014-06-17 21:03:00 +0300 | [diff] [blame] | 1670 | for (i = 0; i < size >> PAGE_SHIFT; i++) { |
Chris Wilson | b90b91d | 2014-06-10 12:14:40 +0100 | [diff] [blame] | 1671 | ret = vm_insert_pfn(vma, |
| 1672 | (unsigned long)vma->vm_start + i * PAGE_SIZE, |
| 1673 | pfn + i); |
| 1674 | if (ret) |
| 1675 | break; |
| 1676 | } |
| 1677 | |
| 1678 | obj->fault_mappable = true; |
| 1679 | } else |
| 1680 | ret = vm_insert_pfn(vma, |
| 1681 | (unsigned long)vmf->virtual_address, |
| 1682 | pfn + page_offset); |
Chris Wilson | c983930 | 2012-11-20 10:45:17 +0000 | [diff] [blame] | 1683 | unpin: |
Ben Widawsky | d7f46fc | 2013-12-06 14:10:55 -0800 | [diff] [blame] | 1684 | i915_gem_object_ggtt_unpin(obj); |
Chris Wilson | c715089 | 2009-09-23 00:43:56 +0100 | [diff] [blame] | 1685 | unlock: |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1686 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | d9bc7e9 | 2011-02-07 13:09:31 +0000 | [diff] [blame] | 1687 | out: |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1688 | switch (ret) { |
Chris Wilson | d9bc7e9 | 2011-02-07 13:09:31 +0000 | [diff] [blame] | 1689 | case -EIO: |
Daniel Vetter | 2232f03 | 2014-09-04 09:36:18 +0200 | [diff] [blame] | 1690 | /* |
| 1691 | * We eat errors when the gpu is terminally wedged to avoid |
| 1692 | * userspace unduly crashing (gl has no provisions for mmaps to |
| 1693 | * fail). But any other -EIO isn't ours (e.g. swap in failure) |
| 1694 | * and so needs to be reported. |
| 1695 | */ |
| 1696 | if (!i915_terminally_wedged(&dev_priv->gpu_error)) { |
Paulo Zanoni | f65c916 | 2013-11-27 18:20:34 -0200 | [diff] [blame] | 1697 | ret = VM_FAULT_SIGBUS; |
| 1698 | break; |
| 1699 | } |
Chris Wilson | 045e769 | 2010-11-07 09:18:22 +0000 | [diff] [blame] | 1700 | case -EAGAIN: |
Daniel Vetter | 571c608 | 2013-09-12 17:57:28 +0200 | [diff] [blame] | 1701 | /* |
| 1702 | * EAGAIN means the gpu is hung and we'll wait for the error |
| 1703 | * handler to reset everything when re-faulting in |
| 1704 | * i915_mutex_lock_interruptible. |
Chris Wilson | d9bc7e9 | 2011-02-07 13:09:31 +0000 | [diff] [blame] | 1705 | */ |
Chris Wilson | c715089 | 2009-09-23 00:43:56 +0100 | [diff] [blame] | 1706 | case 0: |
| 1707 | case -ERESTARTSYS: |
Chris Wilson | bed636a | 2011-02-11 20:31:19 +0000 | [diff] [blame] | 1708 | case -EINTR: |
Dmitry Rogozhkin | e79e0fe | 2012-10-03 17:15:26 +0300 | [diff] [blame] | 1709 | case -EBUSY: |
| 1710 | /* |
| 1711 | * EBUSY is ok: this just means that another thread |
| 1712 | * already did the job. |
| 1713 | */ |
Paulo Zanoni | f65c916 | 2013-11-27 18:20:34 -0200 | [diff] [blame] | 1714 | ret = VM_FAULT_NOPAGE; |
| 1715 | break; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1716 | case -ENOMEM: |
Paulo Zanoni | f65c916 | 2013-11-27 18:20:34 -0200 | [diff] [blame] | 1717 | ret = VM_FAULT_OOM; |
| 1718 | break; |
Daniel Vetter | a7c2e1a | 2012-10-17 11:17:16 +0200 | [diff] [blame] | 1719 | case -ENOSPC: |
Chris Wilson | 45d6781 | 2014-01-31 11:34:57 +0000 | [diff] [blame] | 1720 | case -EFAULT: |
Paulo Zanoni | f65c916 | 2013-11-27 18:20:34 -0200 | [diff] [blame] | 1721 | ret = VM_FAULT_SIGBUS; |
| 1722 | break; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1723 | default: |
Daniel Vetter | a7c2e1a | 2012-10-17 11:17:16 +0200 | [diff] [blame] | 1724 | WARN_ONCE(ret, "unhandled error in i915_gem_fault: %i\n", ret); |
Paulo Zanoni | f65c916 | 2013-11-27 18:20:34 -0200 | [diff] [blame] | 1725 | ret = VM_FAULT_SIGBUS; |
| 1726 | break; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1727 | } |
Paulo Zanoni | f65c916 | 2013-11-27 18:20:34 -0200 | [diff] [blame] | 1728 | |
| 1729 | intel_runtime_pm_put(dev_priv); |
| 1730 | return ret; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1731 | } |
| 1732 | |
| 1733 | /** |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1734 | * i915_gem_release_mmap - remove physical page mappings |
| 1735 | * @obj: obj in question |
| 1736 | * |
André Goddard Rosa | af901ca | 2009-11-14 13:09:05 -0200 | [diff] [blame] | 1737 | * Preserve the reservation of the mmapping with the DRM core code, but |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1738 | * relinquish ownership of the pages back to the system. |
| 1739 | * |
| 1740 | * It is vital that we remove the page mapping if we have mapped a tiled |
| 1741 | * object through the GTT and then lose the fence register due to |
| 1742 | * resource pressure. Similarly if the object has been moved out of the |
| 1743 | * aperture, than pages mapped into userspace must be revoked. Removing the |
| 1744 | * mapping will then trigger a page fault on the next user access, allowing |
| 1745 | * fixup by i915_gem_fault(). |
| 1746 | */ |
Eric Anholt | d05ca30 | 2009-07-10 13:02:26 -0700 | [diff] [blame] | 1747 | void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1748 | i915_gem_release_mmap(struct drm_i915_gem_object *obj) |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1749 | { |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 1750 | if (!obj->fault_mappable) |
| 1751 | return; |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1752 | |
David Herrmann | 6796cb1 | 2014-01-03 14:24:19 +0100 | [diff] [blame] | 1753 | drm_vma_node_unmap(&obj->base.vma_node, |
| 1754 | obj->base.dev->anon_inode->i_mapping); |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 1755 | obj->fault_mappable = false; |
Chris Wilson | 901782b | 2009-07-10 08:18:50 +0100 | [diff] [blame] | 1756 | } |
| 1757 | |
Chris Wilson | eedd10f | 2014-06-16 08:57:44 +0100 | [diff] [blame] | 1758 | void |
| 1759 | i915_gem_release_all_mmaps(struct drm_i915_private *dev_priv) |
| 1760 | { |
| 1761 | struct drm_i915_gem_object *obj; |
| 1762 | |
| 1763 | list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) |
| 1764 | i915_gem_release_mmap(obj); |
| 1765 | } |
| 1766 | |
Imre Deak | 0fa8779 | 2013-01-07 21:47:35 +0200 | [diff] [blame] | 1767 | uint32_t |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1768 | 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] | 1769 | { |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1770 | uint32_t gtt_size; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1771 | |
| 1772 | if (INTEL_INFO(dev)->gen >= 4 || |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1773 | tiling_mode == I915_TILING_NONE) |
| 1774 | return size; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1775 | |
| 1776 | /* Previous chips need a power-of-two fence region when tiling */ |
| 1777 | if (INTEL_INFO(dev)->gen == 3) |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1778 | gtt_size = 1024*1024; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1779 | else |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1780 | gtt_size = 512*1024; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1781 | |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1782 | while (gtt_size < size) |
| 1783 | gtt_size <<= 1; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1784 | |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1785 | return gtt_size; |
Chris Wilson | 92b88ae | 2010-11-09 11:47:32 +0000 | [diff] [blame] | 1786 | } |
| 1787 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1788 | /** |
| 1789 | * i915_gem_get_gtt_alignment - return required GTT alignment for an object |
| 1790 | * @obj: object to check |
| 1791 | * |
| 1792 | * Return the required GTT alignment for an object, taking into account |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 1793 | * potential fence register mapping. |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1794 | */ |
Imre Deak | d865110c | 2013-01-07 21:47:33 +0200 | [diff] [blame] | 1795 | uint32_t |
| 1796 | i915_gem_get_gtt_alignment(struct drm_device *dev, uint32_t size, |
| 1797 | int tiling_mode, bool fenced) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1798 | { |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1799 | /* |
| 1800 | * Minimum alignment is 4k (GTT page size), but might be greater |
| 1801 | * if a fence register is needed for the object. |
| 1802 | */ |
Imre Deak | d865110c | 2013-01-07 21:47:33 +0200 | [diff] [blame] | 1803 | if (INTEL_INFO(dev)->gen >= 4 || (!fenced && IS_G33(dev)) || |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1804 | tiling_mode == I915_TILING_NONE) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1805 | return 4096; |
| 1806 | |
| 1807 | /* |
| 1808 | * Previous chips need to be aligned to the size of the smallest |
| 1809 | * fence register that can contain the object. |
| 1810 | */ |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 1811 | return i915_gem_get_gtt_size(dev, size, tiling_mode); |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 1812 | } |
| 1813 | |
Chris Wilson | d8cb508 | 2012-08-11 15:41:03 +0100 | [diff] [blame] | 1814 | static int i915_gem_object_create_mmap_offset(struct drm_i915_gem_object *obj) |
| 1815 | { |
| 1816 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
| 1817 | int ret; |
| 1818 | |
David Herrmann | 0de2397 | 2013-07-24 21:07:52 +0200 | [diff] [blame] | 1819 | if (drm_vma_node_has_offset(&obj->base.vma_node)) |
Chris Wilson | d8cb508 | 2012-08-11 15:41:03 +0100 | [diff] [blame] | 1820 | return 0; |
| 1821 | |
Daniel Vetter | da494d7 | 2012-12-20 15:11:16 +0100 | [diff] [blame] | 1822 | dev_priv->mm.shrinker_no_lock_stealing = true; |
| 1823 | |
Chris Wilson | d8cb508 | 2012-08-11 15:41:03 +0100 | [diff] [blame] | 1824 | ret = drm_gem_create_mmap_offset(&obj->base); |
| 1825 | if (ret != -ENOSPC) |
Daniel Vetter | da494d7 | 2012-12-20 15:11:16 +0100 | [diff] [blame] | 1826 | goto out; |
Chris Wilson | d8cb508 | 2012-08-11 15:41:03 +0100 | [diff] [blame] | 1827 | |
| 1828 | /* Badly fragmented mmap space? The only way we can recover |
| 1829 | * space is by destroying unwanted objects. We can't randomly release |
| 1830 | * mmap_offsets as userspace expects them to be persistent for the |
| 1831 | * lifetime of the objects. The closest we can is to release the |
| 1832 | * offsets on purgeable objects by truncating it and marking it purged, |
| 1833 | * which prevents userspace from ever using that object again. |
| 1834 | */ |
Chris Wilson | 21ab4e7 | 2014-09-09 11:16:08 +0100 | [diff] [blame] | 1835 | i915_gem_shrink(dev_priv, |
| 1836 | obj->base.size >> PAGE_SHIFT, |
| 1837 | I915_SHRINK_BOUND | |
| 1838 | I915_SHRINK_UNBOUND | |
| 1839 | I915_SHRINK_PURGEABLE); |
Chris Wilson | d8cb508 | 2012-08-11 15:41:03 +0100 | [diff] [blame] | 1840 | ret = drm_gem_create_mmap_offset(&obj->base); |
| 1841 | if (ret != -ENOSPC) |
Daniel Vetter | da494d7 | 2012-12-20 15:11:16 +0100 | [diff] [blame] | 1842 | goto out; |
Chris Wilson | d8cb508 | 2012-08-11 15:41:03 +0100 | [diff] [blame] | 1843 | |
| 1844 | i915_gem_shrink_all(dev_priv); |
Daniel Vetter | da494d7 | 2012-12-20 15:11:16 +0100 | [diff] [blame] | 1845 | ret = drm_gem_create_mmap_offset(&obj->base); |
| 1846 | out: |
| 1847 | dev_priv->mm.shrinker_no_lock_stealing = false; |
| 1848 | |
| 1849 | return ret; |
Chris Wilson | d8cb508 | 2012-08-11 15:41:03 +0100 | [diff] [blame] | 1850 | } |
| 1851 | |
| 1852 | static void i915_gem_object_free_mmap_offset(struct drm_i915_gem_object *obj) |
| 1853 | { |
Chris Wilson | d8cb508 | 2012-08-11 15:41:03 +0100 | [diff] [blame] | 1854 | drm_gem_free_mmap_offset(&obj->base); |
| 1855 | } |
| 1856 | |
Dave Airlie | da6b51d | 2014-12-24 13:11:17 +1000 | [diff] [blame] | 1857 | int |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 1858 | i915_gem_mmap_gtt(struct drm_file *file, |
| 1859 | struct drm_device *dev, |
Dave Airlie | da6b51d | 2014-12-24 13:11:17 +1000 | [diff] [blame] | 1860 | uint32_t handle, |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 1861 | uint64_t *offset) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1862 | { |
Chris Wilson | da761a6 | 2010-10-27 17:37:08 +0100 | [diff] [blame] | 1863 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1864 | struct drm_i915_gem_object *obj; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1865 | int ret; |
| 1866 | |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1867 | ret = i915_mutex_lock_interruptible(dev); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1868 | if (ret) |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 1869 | return ret; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1870 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 1871 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 1872 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1873 | ret = -ENOENT; |
| 1874 | goto unlock; |
| 1875 | } |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1876 | |
Ben Widawsky | 5d4545a | 2013-01-17 12:45:15 -0800 | [diff] [blame] | 1877 | if (obj->base.size > dev_priv->gtt.mappable_end) { |
Chris Wilson | da761a6 | 2010-10-27 17:37:08 +0100 | [diff] [blame] | 1878 | ret = -E2BIG; |
Eric Anholt | ff56b0b | 2011-10-31 23:16:21 -0700 | [diff] [blame] | 1879 | goto out; |
Chris Wilson | da761a6 | 2010-10-27 17:37:08 +0100 | [diff] [blame] | 1880 | } |
| 1881 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1882 | if (obj->madv != I915_MADV_WILLNEED) { |
Chris Wilson | bd9b6a4 | 2014-02-10 09:03:50 +0000 | [diff] [blame] | 1883 | DRM_DEBUG("Attempting to mmap a purgeable buffer\n"); |
Chris Wilson | 8c99e57 | 2014-01-31 11:34:58 +0000 | [diff] [blame] | 1884 | ret = -EFAULT; |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1885 | goto out; |
Chris Wilson | ab18282 | 2009-09-22 18:46:17 +0100 | [diff] [blame] | 1886 | } |
| 1887 | |
Chris Wilson | d8cb508 | 2012-08-11 15:41:03 +0100 | [diff] [blame] | 1888 | ret = i915_gem_object_create_mmap_offset(obj); |
| 1889 | if (ret) |
| 1890 | goto out; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1891 | |
David Herrmann | 0de2397 | 2013-07-24 21:07:52 +0200 | [diff] [blame] | 1892 | *offset = drm_vma_node_offset_addr(&obj->base.vma_node); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1893 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1894 | out: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1895 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1896 | unlock: |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1897 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 1898 | return ret; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 1899 | } |
| 1900 | |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 1901 | /** |
| 1902 | * i915_gem_mmap_gtt_ioctl - prepare an object for GTT mmap'ing |
| 1903 | * @dev: DRM device |
| 1904 | * @data: GTT mapping ioctl data |
| 1905 | * @file: GEM object info |
| 1906 | * |
| 1907 | * Simply returns the fake offset to userspace so it can mmap it. |
| 1908 | * The mmap call will end up in drm_gem_mmap(), which will set things |
| 1909 | * up so we can get faults in the handler above. |
| 1910 | * |
| 1911 | * The fault handler will take care of binding the object into the GTT |
| 1912 | * (since it may have been evicted to make room for something), allocating |
| 1913 | * a fence register, and mapping the appropriate aperture address into |
| 1914 | * userspace. |
| 1915 | */ |
| 1916 | int |
| 1917 | i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data, |
| 1918 | struct drm_file *file) |
| 1919 | { |
| 1920 | struct drm_i915_gem_mmap_gtt *args = data; |
| 1921 | |
Dave Airlie | da6b51d | 2014-12-24 13:11:17 +1000 | [diff] [blame] | 1922 | return i915_gem_mmap_gtt(file, dev, args->handle, &args->offset); |
Dave Airlie | ff72145b | 2011-02-07 12:16:14 +1000 | [diff] [blame] | 1923 | } |
| 1924 | |
Chris Wilson | 5537252 | 2014-03-25 13:23:06 +0000 | [diff] [blame] | 1925 | static inline int |
| 1926 | i915_gem_object_is_purgeable(struct drm_i915_gem_object *obj) |
| 1927 | { |
| 1928 | return obj->madv == I915_MADV_DONTNEED; |
| 1929 | } |
| 1930 | |
Daniel Vetter | 225067e | 2012-08-20 10:23:20 +0200 | [diff] [blame] | 1931 | /* Immediately discard the backing storage */ |
| 1932 | static void |
| 1933 | i915_gem_object_truncate(struct drm_i915_gem_object *obj) |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1934 | { |
Chris Wilson | 4d6294bf | 2012-08-11 15:41:05 +0100 | [diff] [blame] | 1935 | i915_gem_object_free_mmap_offset(obj); |
Daniel Vetter | 1286ff7 | 2012-05-10 15:25:09 +0200 | [diff] [blame] | 1936 | |
Chris Wilson | 4d6294bf | 2012-08-11 15:41:05 +0100 | [diff] [blame] | 1937 | if (obj->base.filp == NULL) |
| 1938 | return; |
| 1939 | |
Daniel Vetter | 225067e | 2012-08-20 10:23:20 +0200 | [diff] [blame] | 1940 | /* Our goal here is to return as much of the memory as |
| 1941 | * is possible back to the system as we are called from OOM. |
| 1942 | * To do this we must instruct the shmfs to drop all of its |
| 1943 | * backing pages, *now*. |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1944 | */ |
Chris Wilson | 5537252 | 2014-03-25 13:23:06 +0000 | [diff] [blame] | 1945 | shmem_truncate_range(file_inode(obj->base.filp), 0, (loff_t)-1); |
Daniel Vetter | 225067e | 2012-08-20 10:23:20 +0200 | [diff] [blame] | 1946 | obj->madv = __I915_MADV_PURGED; |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1947 | } |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1948 | |
Chris Wilson | 5537252 | 2014-03-25 13:23:06 +0000 | [diff] [blame] | 1949 | /* Try to discard unwanted pages */ |
| 1950 | static void |
| 1951 | i915_gem_object_invalidate(struct drm_i915_gem_object *obj) |
Daniel Vetter | 225067e | 2012-08-20 10:23:20 +0200 | [diff] [blame] | 1952 | { |
Chris Wilson | 5537252 | 2014-03-25 13:23:06 +0000 | [diff] [blame] | 1953 | struct address_space *mapping; |
| 1954 | |
| 1955 | switch (obj->madv) { |
| 1956 | case I915_MADV_DONTNEED: |
| 1957 | i915_gem_object_truncate(obj); |
| 1958 | case __I915_MADV_PURGED: |
| 1959 | return; |
| 1960 | } |
| 1961 | |
| 1962 | if (obj->base.filp == NULL) |
| 1963 | return; |
| 1964 | |
| 1965 | mapping = file_inode(obj->base.filp)->i_mapping, |
| 1966 | invalidate_mapping_pages(mapping, 0, (loff_t)-1); |
Chris Wilson | e5281cc | 2010-10-28 13:45:36 +0100 | [diff] [blame] | 1967 | } |
| 1968 | |
Chris Wilson | 5cdf588 | 2010-09-27 15:51:07 +0100 | [diff] [blame] | 1969 | static void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1970 | i915_gem_object_put_pages_gtt(struct drm_i915_gem_object *obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 1971 | { |
Imre Deak | 90797e6 | 2013-02-18 19:28:03 +0200 | [diff] [blame] | 1972 | struct sg_page_iter sg_iter; |
| 1973 | int ret; |
Daniel Vetter | 1286ff7 | 2012-05-10 15:25:09 +0200 | [diff] [blame] | 1974 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1975 | BUG_ON(obj->madv == __I915_MADV_PURGED); |
Eric Anholt | 856fa19 | 2009-03-19 14:10:50 -0700 | [diff] [blame] | 1976 | |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1977 | ret = i915_gem_object_set_to_cpu_domain(obj, true); |
| 1978 | if (ret) { |
| 1979 | /* In the event of a disaster, abandon all caches and |
| 1980 | * hope for the best. |
| 1981 | */ |
| 1982 | WARN_ON(ret != -EIO); |
Chris Wilson | 2c22569 | 2013-08-09 12:26:45 +0100 | [diff] [blame] | 1983 | i915_gem_clflush_object(obj, true); |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 1984 | obj->base.read_domains = obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
| 1985 | } |
| 1986 | |
Daniel Vetter | 6dacfd2 | 2011-09-12 21:30:02 +0200 | [diff] [blame] | 1987 | if (i915_gem_object_needs_bit17_swizzle(obj)) |
Eric Anholt | 280b713 | 2009-03-12 16:56:27 -0700 | [diff] [blame] | 1988 | i915_gem_object_save_bit_17_swizzle(obj); |
| 1989 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1990 | if (obj->madv == I915_MADV_DONTNEED) |
| 1991 | obj->dirty = 0; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 1992 | |
Imre Deak | 90797e6 | 2013-02-18 19:28:03 +0200 | [diff] [blame] | 1993 | for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, 0) { |
Imre Deak | 2db76d7 | 2013-03-26 15:14:18 +0200 | [diff] [blame] | 1994 | struct page *page = sg_page_iter_page(&sg_iter); |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1995 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1996 | if (obj->dirty) |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1997 | set_page_dirty(page); |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 1998 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1999 | if (obj->madv == I915_MADV_WILLNEED) |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 2000 | mark_page_accessed(page); |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 2001 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 2002 | page_cache_release(page); |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 2003 | } |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2004 | obj->dirty = 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2005 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 2006 | sg_free_table(obj->pages); |
| 2007 | kfree(obj->pages); |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 2008 | } |
| 2009 | |
Chris Wilson | dd624af | 2013-01-15 12:39:35 +0000 | [diff] [blame] | 2010 | int |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 2011 | i915_gem_object_put_pages(struct drm_i915_gem_object *obj) |
| 2012 | { |
| 2013 | const struct drm_i915_gem_object_ops *ops = obj->ops; |
| 2014 | |
Chris Wilson | 2f745ad | 2012-09-04 21:02:58 +0100 | [diff] [blame] | 2015 | if (obj->pages == NULL) |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 2016 | return 0; |
| 2017 | |
Chris Wilson | a557017 | 2012-09-04 21:02:54 +0100 | [diff] [blame] | 2018 | if (obj->pages_pin_count) |
| 2019 | return -EBUSY; |
| 2020 | |
Ben Widawsky | 9843877 | 2013-07-31 17:00:12 -0700 | [diff] [blame] | 2021 | BUG_ON(i915_gem_obj_bound_any(obj)); |
Ben Widawsky | 3e12302 | 2013-07-31 17:00:04 -0700 | [diff] [blame] | 2022 | |
Chris Wilson | a2165e3 | 2012-12-03 11:49:00 +0000 | [diff] [blame] | 2023 | /* ->put_pages might need to allocate memory for the bit17 swizzle |
| 2024 | * array, hence protect them from being reaped by removing them from gtt |
| 2025 | * lists early. */ |
Ben Widawsky | 35c20a6 | 2013-05-31 11:28:48 -0700 | [diff] [blame] | 2026 | list_del(&obj->global_list); |
Chris Wilson | a2165e3 | 2012-12-03 11:49:00 +0000 | [diff] [blame] | 2027 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 2028 | ops->put_pages(obj); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2029 | obj->pages = NULL; |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2030 | |
Chris Wilson | 5537252 | 2014-03-25 13:23:06 +0000 | [diff] [blame] | 2031 | i915_gem_object_invalidate(obj); |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2032 | |
| 2033 | return 0; |
| 2034 | } |
| 2035 | |
Chris Wilson | 21ab4e7 | 2014-09-09 11:16:08 +0100 | [diff] [blame] | 2036 | unsigned long |
| 2037 | i915_gem_shrink(struct drm_i915_private *dev_priv, |
| 2038 | long target, unsigned flags) |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2039 | { |
Chris Wilson | 60a5372 | 2014-10-03 10:29:51 +0100 | [diff] [blame] | 2040 | const struct { |
| 2041 | struct list_head *list; |
| 2042 | unsigned int bit; |
| 2043 | } phases[] = { |
| 2044 | { &dev_priv->mm.unbound_list, I915_SHRINK_UNBOUND }, |
| 2045 | { &dev_priv->mm.bound_list, I915_SHRINK_BOUND }, |
| 2046 | { NULL, 0 }, |
| 2047 | }, *phase; |
Chris Wilson | d9973b4 | 2013-10-04 10:33:00 +0100 | [diff] [blame] | 2048 | unsigned long count = 0; |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2049 | |
Chris Wilson | 57094f8 | 2013-09-04 10:45:50 +0100 | [diff] [blame] | 2050 | /* |
Chris Wilson | c8725f3 | 2014-03-17 12:21:55 +0000 | [diff] [blame] | 2051 | * As we may completely rewrite the (un)bound list whilst unbinding |
Chris Wilson | 57094f8 | 2013-09-04 10:45:50 +0100 | [diff] [blame] | 2052 | * (due to retiring requests) we have to strictly process only |
| 2053 | * one element of the list at the time, and recheck the list |
| 2054 | * on every iteration. |
Chris Wilson | c8725f3 | 2014-03-17 12:21:55 +0000 | [diff] [blame] | 2055 | * |
| 2056 | * In particular, we must hold a reference whilst removing the |
| 2057 | * object as we may end up waiting for and/or retiring the objects. |
| 2058 | * This might release the final reference (held by the active list) |
| 2059 | * and result in the object being freed from under us. This is |
| 2060 | * similar to the precautions the eviction code must take whilst |
| 2061 | * removing objects. |
| 2062 | * |
| 2063 | * Also note that although these lists do not hold a reference to |
| 2064 | * the object we can safely grab one here: The final object |
| 2065 | * unreferencing and the bound_list are both protected by the |
| 2066 | * dev->struct_mutex and so we won't ever be able to observe an |
| 2067 | * object on the bound_list with a reference count equals 0. |
Chris Wilson | 57094f8 | 2013-09-04 10:45:50 +0100 | [diff] [blame] | 2068 | */ |
Chris Wilson | 60a5372 | 2014-10-03 10:29:51 +0100 | [diff] [blame] | 2069 | for (phase = phases; phase->list; phase++) { |
Chris Wilson | 21ab4e7 | 2014-09-09 11:16:08 +0100 | [diff] [blame] | 2070 | struct list_head still_in_list; |
Chris Wilson | c8725f3 | 2014-03-17 12:21:55 +0000 | [diff] [blame] | 2071 | |
Chris Wilson | 60a5372 | 2014-10-03 10:29:51 +0100 | [diff] [blame] | 2072 | if ((flags & phase->bit) == 0) |
| 2073 | continue; |
Ben Widawsky | 80dcfdb | 2013-07-31 17:00:01 -0700 | [diff] [blame] | 2074 | |
Chris Wilson | 21ab4e7 | 2014-09-09 11:16:08 +0100 | [diff] [blame] | 2075 | INIT_LIST_HEAD(&still_in_list); |
Chris Wilson | 60a5372 | 2014-10-03 10:29:51 +0100 | [diff] [blame] | 2076 | while (count < target && !list_empty(phase->list)) { |
Chris Wilson | 21ab4e7 | 2014-09-09 11:16:08 +0100 | [diff] [blame] | 2077 | struct drm_i915_gem_object *obj; |
| 2078 | struct i915_vma *vma, *v; |
Chris Wilson | 57094f8 | 2013-09-04 10:45:50 +0100 | [diff] [blame] | 2079 | |
Chris Wilson | 60a5372 | 2014-10-03 10:29:51 +0100 | [diff] [blame] | 2080 | obj = list_first_entry(phase->list, |
Chris Wilson | 21ab4e7 | 2014-09-09 11:16:08 +0100 | [diff] [blame] | 2081 | typeof(*obj), global_list); |
| 2082 | list_move_tail(&obj->global_list, &still_in_list); |
Ben Widawsky | 80dcfdb | 2013-07-31 17:00:01 -0700 | [diff] [blame] | 2083 | |
Chris Wilson | 60a5372 | 2014-10-03 10:29:51 +0100 | [diff] [blame] | 2084 | if (flags & I915_SHRINK_PURGEABLE && |
| 2085 | !i915_gem_object_is_purgeable(obj)) |
Chris Wilson | 21ab4e7 | 2014-09-09 11:16:08 +0100 | [diff] [blame] | 2086 | continue; |
Chris Wilson | 57094f8 | 2013-09-04 10:45:50 +0100 | [diff] [blame] | 2087 | |
Chris Wilson | 21ab4e7 | 2014-09-09 11:16:08 +0100 | [diff] [blame] | 2088 | drm_gem_object_reference(&obj->base); |
Ben Widawsky | 80dcfdb | 2013-07-31 17:00:01 -0700 | [diff] [blame] | 2089 | |
Chris Wilson | 60a5372 | 2014-10-03 10:29:51 +0100 | [diff] [blame] | 2090 | /* For the unbound phase, this should be a no-op! */ |
| 2091 | list_for_each_entry_safe(vma, v, |
| 2092 | &obj->vma_list, vma_link) |
Chris Wilson | 21ab4e7 | 2014-09-09 11:16:08 +0100 | [diff] [blame] | 2093 | if (i915_vma_unbind(vma)) |
| 2094 | break; |
Chris Wilson | 57094f8 | 2013-09-04 10:45:50 +0100 | [diff] [blame] | 2095 | |
Chris Wilson | 21ab4e7 | 2014-09-09 11:16:08 +0100 | [diff] [blame] | 2096 | if (i915_gem_object_put_pages(obj) == 0) |
| 2097 | count += obj->base.size >> PAGE_SHIFT; |
| 2098 | |
| 2099 | drm_gem_object_unreference(&obj->base); |
| 2100 | } |
Chris Wilson | 60a5372 | 2014-10-03 10:29:51 +0100 | [diff] [blame] | 2101 | list_splice(&still_in_list, phase->list); |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2102 | } |
| 2103 | |
| 2104 | return count; |
| 2105 | } |
| 2106 | |
Chris Wilson | d9973b4 | 2013-10-04 10:33:00 +0100 | [diff] [blame] | 2107 | static unsigned long |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2108 | i915_gem_shrink_all(struct drm_i915_private *dev_priv) |
| 2109 | { |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2110 | i915_gem_evict_everything(dev_priv->dev); |
Chris Wilson | 21ab4e7 | 2014-09-09 11:16:08 +0100 | [diff] [blame] | 2111 | return i915_gem_shrink(dev_priv, LONG_MAX, |
| 2112 | I915_SHRINK_BOUND | I915_SHRINK_UNBOUND); |
Daniel Vetter | 225067e | 2012-08-20 10:23:20 +0200 | [diff] [blame] | 2113 | } |
| 2114 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 2115 | static int |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2116 | i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2117 | { |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2118 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2119 | int page_count, i; |
| 2120 | struct address_space *mapping; |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 2121 | struct sg_table *st; |
| 2122 | struct scatterlist *sg; |
Imre Deak | 90797e6 | 2013-02-18 19:28:03 +0200 | [diff] [blame] | 2123 | struct sg_page_iter sg_iter; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2124 | struct page *page; |
Imre Deak | 90797e6 | 2013-02-18 19:28:03 +0200 | [diff] [blame] | 2125 | unsigned long last_pfn = 0; /* suppress gcc warning */ |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2126 | gfp_t gfp; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2127 | |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2128 | /* Assert that the object is not currently in any GPU domain. As it |
| 2129 | * wasn't in the GTT, there shouldn't be any way it could have been in |
| 2130 | * a GPU cache |
| 2131 | */ |
| 2132 | BUG_ON(obj->base.read_domains & I915_GEM_GPU_DOMAINS); |
| 2133 | BUG_ON(obj->base.write_domain & I915_GEM_GPU_DOMAINS); |
| 2134 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 2135 | st = kmalloc(sizeof(*st), GFP_KERNEL); |
| 2136 | if (st == NULL) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2137 | return -ENOMEM; |
| 2138 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 2139 | page_count = obj->base.size / PAGE_SIZE; |
| 2140 | if (sg_alloc_table(st, page_count, GFP_KERNEL)) { |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 2141 | kfree(st); |
| 2142 | return -ENOMEM; |
| 2143 | } |
| 2144 | |
| 2145 | /* Get the list of pages out of our struct file. They'll be pinned |
| 2146 | * at this point until we release them. |
| 2147 | * |
| 2148 | * Fail silently without starting the shrinker |
| 2149 | */ |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 2150 | mapping = file_inode(obj->base.filp)->i_mapping; |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2151 | gfp = mapping_gfp_mask(mapping); |
Linus Torvalds | caf4919 | 2012-12-10 10:51:16 -0800 | [diff] [blame] | 2152 | gfp |= __GFP_NORETRY | __GFP_NOWARN | __GFP_NO_KSWAPD; |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2153 | gfp &= ~(__GFP_IO | __GFP_WAIT); |
Imre Deak | 90797e6 | 2013-02-18 19:28:03 +0200 | [diff] [blame] | 2154 | sg = st->sgl; |
| 2155 | st->nents = 0; |
| 2156 | for (i = 0; i < page_count; i++) { |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2157 | page = shmem_read_mapping_page_gfp(mapping, i, gfp); |
| 2158 | if (IS_ERR(page)) { |
Chris Wilson | 21ab4e7 | 2014-09-09 11:16:08 +0100 | [diff] [blame] | 2159 | i915_gem_shrink(dev_priv, |
| 2160 | page_count, |
| 2161 | I915_SHRINK_BOUND | |
| 2162 | I915_SHRINK_UNBOUND | |
| 2163 | I915_SHRINK_PURGEABLE); |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2164 | page = shmem_read_mapping_page_gfp(mapping, i, gfp); |
| 2165 | } |
| 2166 | if (IS_ERR(page)) { |
| 2167 | /* We've tried hard to allocate the memory by reaping |
| 2168 | * our own buffer, now let the real VM do its job and |
| 2169 | * go down in flames if truly OOM. |
| 2170 | */ |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2171 | i915_gem_shrink_all(dev_priv); |
David Herrmann | f461d1b | 2014-05-25 14:34:10 +0200 | [diff] [blame] | 2172 | page = shmem_read_mapping_page(mapping, i); |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2173 | if (IS_ERR(page)) |
| 2174 | goto err_pages; |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 2175 | } |
Konrad Rzeszutek Wilk | 426729d | 2013-06-24 11:47:48 -0400 | [diff] [blame] | 2176 | #ifdef CONFIG_SWIOTLB |
| 2177 | if (swiotlb_nr_tbl()) { |
| 2178 | st->nents++; |
| 2179 | sg_set_page(sg, page, PAGE_SIZE, 0); |
| 2180 | sg = sg_next(sg); |
| 2181 | continue; |
| 2182 | } |
| 2183 | #endif |
Imre Deak | 90797e6 | 2013-02-18 19:28:03 +0200 | [diff] [blame] | 2184 | if (!i || page_to_pfn(page) != last_pfn + 1) { |
| 2185 | if (i) |
| 2186 | sg = sg_next(sg); |
| 2187 | st->nents++; |
| 2188 | sg_set_page(sg, page, PAGE_SIZE, 0); |
| 2189 | } else { |
| 2190 | sg->length += PAGE_SIZE; |
| 2191 | } |
| 2192 | last_pfn = page_to_pfn(page); |
Daniel Vetter | 3bbbe70 | 2013-10-07 17:15:45 -0300 | [diff] [blame] | 2193 | |
| 2194 | /* Check that the i965g/gm workaround works. */ |
| 2195 | WARN_ON((gfp & __GFP_DMA32) && (last_pfn >= 0x00100000UL)); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2196 | } |
Konrad Rzeszutek Wilk | 426729d | 2013-06-24 11:47:48 -0400 | [diff] [blame] | 2197 | #ifdef CONFIG_SWIOTLB |
| 2198 | if (!swiotlb_nr_tbl()) |
| 2199 | #endif |
| 2200 | sg_mark_end(sg); |
Chris Wilson | 74ce6b6 | 2012-10-19 15:51:06 +0100 | [diff] [blame] | 2201 | obj->pages = st; |
| 2202 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2203 | if (i915_gem_object_needs_bit17_swizzle(obj)) |
| 2204 | i915_gem_object_do_bit_17_swizzle(obj); |
| 2205 | |
Daniel Vetter | 656bfa3 | 2014-11-20 09:26:30 +0100 | [diff] [blame] | 2206 | if (obj->tiling_mode != I915_TILING_NONE && |
| 2207 | dev_priv->quirks & QUIRK_PIN_SWIZZLED_PAGES) |
| 2208 | i915_gem_object_pin_pages(obj); |
| 2209 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2210 | return 0; |
| 2211 | |
| 2212 | err_pages: |
Imre Deak | 90797e6 | 2013-02-18 19:28:03 +0200 | [diff] [blame] | 2213 | sg_mark_end(sg); |
| 2214 | for_each_sg_page(st->sgl, &sg_iter, st->nents, 0) |
Imre Deak | 2db76d7 | 2013-03-26 15:14:18 +0200 | [diff] [blame] | 2215 | page_cache_release(sg_page_iter_page(&sg_iter)); |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 2216 | sg_free_table(st); |
| 2217 | kfree(st); |
Chris Wilson | 0820baf | 2014-03-25 13:23:03 +0000 | [diff] [blame] | 2218 | |
| 2219 | /* shmemfs first checks if there is enough memory to allocate the page |
| 2220 | * and reports ENOSPC should there be insufficient, along with the usual |
| 2221 | * ENOMEM for a genuine allocation failure. |
| 2222 | * |
| 2223 | * We use ENOSPC in our driver to mean that we have run out of aperture |
| 2224 | * space and so want to translate the error from shmemfs back to our |
| 2225 | * usual understanding of ENOMEM. |
| 2226 | */ |
| 2227 | if (PTR_ERR(page) == -ENOSPC) |
| 2228 | return -ENOMEM; |
| 2229 | else |
| 2230 | return PTR_ERR(page); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2231 | } |
| 2232 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 2233 | /* Ensure that the associated pages are gathered from the backing storage |
| 2234 | * and pinned into our object. i915_gem_object_get_pages() may be called |
| 2235 | * multiple times before they are released by a single call to |
| 2236 | * i915_gem_object_put_pages() - once the pages are no longer referenced |
| 2237 | * either as a result of memory pressure (reaping pages under the shrinker) |
| 2238 | * or as the object is itself released. |
| 2239 | */ |
| 2240 | int |
| 2241 | i915_gem_object_get_pages(struct drm_i915_gem_object *obj) |
| 2242 | { |
| 2243 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
| 2244 | const struct drm_i915_gem_object_ops *ops = obj->ops; |
| 2245 | int ret; |
| 2246 | |
Chris Wilson | 2f745ad | 2012-09-04 21:02:58 +0100 | [diff] [blame] | 2247 | if (obj->pages) |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 2248 | return 0; |
| 2249 | |
Chris Wilson | 43e28f0 | 2013-01-08 10:53:09 +0000 | [diff] [blame] | 2250 | if (obj->madv != I915_MADV_WILLNEED) { |
Chris Wilson | bd9b6a4 | 2014-02-10 09:03:50 +0000 | [diff] [blame] | 2251 | DRM_DEBUG("Attempting to obtain a purgeable object\n"); |
Chris Wilson | 8c99e57 | 2014-01-31 11:34:58 +0000 | [diff] [blame] | 2252 | return -EFAULT; |
Chris Wilson | 43e28f0 | 2013-01-08 10:53:09 +0000 | [diff] [blame] | 2253 | } |
| 2254 | |
Chris Wilson | a557017 | 2012-09-04 21:02:54 +0100 | [diff] [blame] | 2255 | BUG_ON(obj->pages_pin_count); |
| 2256 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 2257 | ret = ops->get_pages(obj); |
| 2258 | if (ret) |
| 2259 | return ret; |
| 2260 | |
Ben Widawsky | 35c20a6 | 2013-05-31 11:28:48 -0700 | [diff] [blame] | 2261 | list_add_tail(&obj->global_list, &dev_priv->mm.unbound_list); |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 2262 | return 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2263 | } |
| 2264 | |
Ben Widawsky | e2d05a8 | 2013-09-24 09:57:58 -0700 | [diff] [blame] | 2265 | static void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2266 | i915_gem_object_move_to_active(struct drm_i915_gem_object *obj, |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 2267 | struct intel_engine_cs *ring) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2268 | { |
John Harrison | 41c5241 | 2014-11-24 18:49:43 +0000 | [diff] [blame] | 2269 | struct drm_i915_gem_request *req; |
| 2270 | struct intel_engine_cs *old_ring; |
Daniel Vetter | 617dbe2 | 2010-02-11 22:16:02 +0100 | [diff] [blame] | 2271 | |
Zou Nan hai | 852835f | 2010-05-21 09:08:56 +0800 | [diff] [blame] | 2272 | BUG_ON(ring == NULL); |
John Harrison | 41c5241 | 2014-11-24 18:49:43 +0000 | [diff] [blame] | 2273 | |
| 2274 | req = intel_ring_get_request(ring); |
| 2275 | old_ring = i915_gem_request_get_ring(obj->last_read_req); |
| 2276 | |
| 2277 | if (old_ring != ring && obj->last_write_req) { |
John Harrison | 97b2a6a | 2014-11-24 18:49:26 +0000 | [diff] [blame] | 2278 | /* Keep the request relative to the current ring */ |
| 2279 | i915_gem_request_assign(&obj->last_write_req, req); |
Chris Wilson | 02978ff | 2013-07-09 09:22:39 +0100 | [diff] [blame] | 2280 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2281 | |
| 2282 | /* Add a reference if we're newly entering the active list. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2283 | if (!obj->active) { |
| 2284 | drm_gem_object_reference(&obj->base); |
| 2285 | obj->active = 1; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2286 | } |
Daniel Vetter | e35a41d | 2010-02-11 22:13:59 +0100 | [diff] [blame] | 2287 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2288 | list_move_tail(&obj->ring_list, &ring->active_list); |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 2289 | |
John Harrison | 97b2a6a | 2014-11-24 18:49:26 +0000 | [diff] [blame] | 2290 | i915_gem_request_assign(&obj->last_read_req, req); |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 2291 | } |
| 2292 | |
Ben Widawsky | e2d05a8 | 2013-09-24 09:57:58 -0700 | [diff] [blame] | 2293 | void i915_vma_move_to_active(struct i915_vma *vma, |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 2294 | struct intel_engine_cs *ring) |
Ben Widawsky | e2d05a8 | 2013-09-24 09:57:58 -0700 | [diff] [blame] | 2295 | { |
| 2296 | list_move_tail(&vma->mm_list, &vma->vm->active_list); |
| 2297 | return i915_gem_object_move_to_active(vma->obj, ring); |
| 2298 | } |
| 2299 | |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 2300 | static void |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 2301 | i915_gem_object_move_to_inactive(struct drm_i915_gem_object *obj) |
| 2302 | { |
Ben Widawsky | feb822c | 2013-12-06 14:10:51 -0800 | [diff] [blame] | 2303 | struct i915_vma *vma; |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 2304 | |
Chris Wilson | 65ce302 | 2012-07-20 12:41:02 +0100 | [diff] [blame] | 2305 | BUG_ON(obj->base.write_domain & ~I915_GEM_GPU_DOMAINS); |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 2306 | BUG_ON(!obj->active); |
Chris Wilson | 65ce302 | 2012-07-20 12:41:02 +0100 | [diff] [blame] | 2307 | |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 2308 | list_for_each_entry(vma, &obj->vma_list, vma_link) { |
| 2309 | if (!list_empty(&vma->mm_list)) |
| 2310 | list_move_tail(&vma->mm_list, &vma->vm->inactive_list); |
Ben Widawsky | feb822c | 2013-12-06 14:10:51 -0800 | [diff] [blame] | 2311 | } |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 2312 | |
Daniel Vetter | f99d706 | 2014-06-19 16:01:59 +0200 | [diff] [blame] | 2313 | intel_fb_obj_flush(obj, true); |
| 2314 | |
Chris Wilson | 65ce302 | 2012-07-20 12:41:02 +0100 | [diff] [blame] | 2315 | list_del_init(&obj->ring_list); |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 2316 | |
John Harrison | 97b2a6a | 2014-11-24 18:49:26 +0000 | [diff] [blame] | 2317 | i915_gem_request_assign(&obj->last_read_req, NULL); |
| 2318 | i915_gem_request_assign(&obj->last_write_req, NULL); |
Chris Wilson | 65ce302 | 2012-07-20 12:41:02 +0100 | [diff] [blame] | 2319 | obj->base.write_domain = 0; |
| 2320 | |
John Harrison | 97b2a6a | 2014-11-24 18:49:26 +0000 | [diff] [blame] | 2321 | i915_gem_request_assign(&obj->last_fenced_req, NULL); |
Chris Wilson | caea747 | 2010-11-12 13:53:37 +0000 | [diff] [blame] | 2322 | |
| 2323 | obj->active = 0; |
| 2324 | drm_gem_object_unreference(&obj->base); |
| 2325 | |
| 2326 | WARN_ON(i915_verify_lists(dev)); |
Eric Anholt | ce44b0e | 2008-11-06 16:00:31 -0800 | [diff] [blame] | 2327 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2328 | |
Chris Wilson | c8725f3 | 2014-03-17 12:21:55 +0000 | [diff] [blame] | 2329 | static void |
| 2330 | i915_gem_object_retire(struct drm_i915_gem_object *obj) |
| 2331 | { |
John Harrison | 41c5241 | 2014-11-24 18:49:43 +0000 | [diff] [blame] | 2332 | if (obj->last_read_req == NULL) |
Chris Wilson | c8725f3 | 2014-03-17 12:21:55 +0000 | [diff] [blame] | 2333 | return; |
| 2334 | |
John Harrison | 1b5a433 | 2014-11-24 18:49:42 +0000 | [diff] [blame] | 2335 | if (i915_gem_request_completed(obj->last_read_req, true)) |
Chris Wilson | c8725f3 | 2014-03-17 12:21:55 +0000 | [diff] [blame] | 2336 | i915_gem_object_move_to_inactive(obj); |
| 2337 | } |
| 2338 | |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 2339 | static int |
Mika Kuoppala | fca26bb | 2012-12-19 11:13:08 +0200 | [diff] [blame] | 2340 | i915_gem_init_seqno(struct drm_device *dev, u32 seqno) |
Daniel Vetter | 53d227f | 2012-01-25 16:32:49 +0100 | [diff] [blame] | 2341 | { |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 2342 | struct drm_i915_private *dev_priv = dev->dev_private; |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 2343 | struct intel_engine_cs *ring; |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 2344 | int ret, i, j; |
Daniel Vetter | 53d227f | 2012-01-25 16:32:49 +0100 | [diff] [blame] | 2345 | |
Chris Wilson | 107f27a5 | 2012-12-10 13:56:17 +0200 | [diff] [blame] | 2346 | /* Carefully retire all requests without writing to the rings */ |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 2347 | for_each_ring(ring, dev_priv, i) { |
Chris Wilson | 107f27a5 | 2012-12-10 13:56:17 +0200 | [diff] [blame] | 2348 | ret = intel_ring_idle(ring); |
| 2349 | if (ret) |
| 2350 | return ret; |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 2351 | } |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 2352 | i915_gem_retire_requests(dev); |
Chris Wilson | 107f27a5 | 2012-12-10 13:56:17 +0200 | [diff] [blame] | 2353 | |
| 2354 | /* Finally reset hw state */ |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 2355 | for_each_ring(ring, dev_priv, i) { |
Mika Kuoppala | fca26bb | 2012-12-19 11:13:08 +0200 | [diff] [blame] | 2356 | intel_ring_init_seqno(ring, seqno); |
Mika Kuoppala | 498d2ac | 2012-12-04 15:12:04 +0200 | [diff] [blame] | 2357 | |
Ben Widawsky | ebc348b | 2014-04-29 14:52:28 -0700 | [diff] [blame] | 2358 | for (j = 0; j < ARRAY_SIZE(ring->semaphore.sync_seqno); j++) |
| 2359 | ring->semaphore.sync_seqno[j] = 0; |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 2360 | } |
| 2361 | |
| 2362 | return 0; |
Daniel Vetter | 53d227f | 2012-01-25 16:32:49 +0100 | [diff] [blame] | 2363 | } |
| 2364 | |
Mika Kuoppala | fca26bb | 2012-12-19 11:13:08 +0200 | [diff] [blame] | 2365 | int i915_gem_set_seqno(struct drm_device *dev, u32 seqno) |
| 2366 | { |
| 2367 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2368 | int ret; |
| 2369 | |
| 2370 | if (seqno == 0) |
| 2371 | return -EINVAL; |
| 2372 | |
| 2373 | /* HWS page needs to be set less than what we |
| 2374 | * will inject to ring |
| 2375 | */ |
| 2376 | ret = i915_gem_init_seqno(dev, seqno - 1); |
| 2377 | if (ret) |
| 2378 | return ret; |
| 2379 | |
| 2380 | /* Carefully set the last_seqno value so that wrap |
| 2381 | * detection still works |
| 2382 | */ |
| 2383 | dev_priv->next_seqno = seqno; |
| 2384 | dev_priv->last_seqno = seqno - 1; |
| 2385 | if (dev_priv->last_seqno == 0) |
| 2386 | dev_priv->last_seqno--; |
| 2387 | |
| 2388 | return 0; |
| 2389 | } |
| 2390 | |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 2391 | int |
| 2392 | i915_gem_get_seqno(struct drm_device *dev, u32 *seqno) |
Daniel Vetter | 53d227f | 2012-01-25 16:32:49 +0100 | [diff] [blame] | 2393 | { |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 2394 | struct drm_i915_private *dev_priv = dev->dev_private; |
Daniel Vetter | 53d227f | 2012-01-25 16:32:49 +0100 | [diff] [blame] | 2395 | |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 2396 | /* reserve 0 for non-seqno */ |
| 2397 | if (dev_priv->next_seqno == 0) { |
Mika Kuoppala | fca26bb | 2012-12-19 11:13:08 +0200 | [diff] [blame] | 2398 | int ret = i915_gem_init_seqno(dev, 0); |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 2399 | if (ret) |
| 2400 | return ret; |
| 2401 | |
| 2402 | dev_priv->next_seqno = 1; |
| 2403 | } |
| 2404 | |
Mika Kuoppala | f72b343 | 2012-12-10 15:41:48 +0200 | [diff] [blame] | 2405 | *seqno = dev_priv->last_seqno = dev_priv->next_seqno++; |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 2406 | return 0; |
Daniel Vetter | 53d227f | 2012-01-25 16:32:49 +0100 | [diff] [blame] | 2407 | } |
| 2408 | |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 2409 | int __i915_add_request(struct intel_engine_cs *ring, |
Mika Kuoppala | 0025c07 | 2013-06-12 12:35:30 +0300 | [diff] [blame] | 2410 | struct drm_file *file, |
John Harrison | 9400ae5 | 2014-11-24 18:49:36 +0000 | [diff] [blame] | 2411 | struct drm_i915_gem_object *obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2412 | { |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 2413 | struct drm_i915_private *dev_priv = ring->dev->dev_private; |
Chris Wilson | acb868d | 2012-09-26 13:47:30 +0100 | [diff] [blame] | 2414 | struct drm_i915_gem_request *request; |
Oscar Mateo | 48e29f5 | 2014-07-24 17:04:29 +0100 | [diff] [blame] | 2415 | struct intel_ringbuffer *ringbuf; |
Nick Hoath | 6d3d827 | 2015-01-15 13:10:39 +0000 | [diff] [blame] | 2416 | u32 request_start; |
Chris Wilson | 3cce469 | 2010-10-27 16:11:02 +0100 | [diff] [blame] | 2417 | int ret; |
| 2418 | |
John Harrison | 6259cea | 2014-11-24 18:49:29 +0000 | [diff] [blame] | 2419 | request = ring->outstanding_lazy_request; |
Oscar Mateo | 48e29f5 | 2014-07-24 17:04:29 +0100 | [diff] [blame] | 2420 | if (WARN_ON(request == NULL)) |
| 2421 | return -ENOMEM; |
| 2422 | |
| 2423 | if (i915.enable_execlists) { |
Nick Hoath | 2107637 | 2015-01-15 13:10:38 +0000 | [diff] [blame] | 2424 | ringbuf = request->ctx->engine[ring->id].ringbuf; |
Oscar Mateo | 48e29f5 | 2014-07-24 17:04:29 +0100 | [diff] [blame] | 2425 | } else |
| 2426 | ringbuf = ring->buffer; |
| 2427 | |
| 2428 | request_start = intel_ring_get_tail(ringbuf); |
Daniel Vetter | cc889e0 | 2012-06-13 20:45:19 +0200 | [diff] [blame] | 2429 | /* |
| 2430 | * Emit any outstanding flushes - execbuf can fail to emit the flush |
| 2431 | * after having emitted the batchbuffer command. Hence we need to fix |
| 2432 | * things up similar to emitting the lazy request. The difference here |
| 2433 | * is that the flush _must_ happen before the next request, no matter |
| 2434 | * what. |
| 2435 | */ |
Oscar Mateo | 48e29f5 | 2014-07-24 17:04:29 +0100 | [diff] [blame] | 2436 | if (i915.enable_execlists) { |
Nick Hoath | 2107637 | 2015-01-15 13:10:38 +0000 | [diff] [blame] | 2437 | ret = logical_ring_flush_all_caches(ringbuf, request->ctx); |
Oscar Mateo | 48e29f5 | 2014-07-24 17:04:29 +0100 | [diff] [blame] | 2438 | if (ret) |
| 2439 | return ret; |
| 2440 | } else { |
| 2441 | ret = intel_ring_flush_all_caches(ring); |
| 2442 | if (ret) |
| 2443 | return ret; |
| 2444 | } |
Daniel Vetter | cc889e0 | 2012-06-13 20:45:19 +0200 | [diff] [blame] | 2445 | |
Chris Wilson | a71d8d9 | 2012-02-15 11:25:36 +0000 | [diff] [blame] | 2446 | /* Record the position of the start of the request so that |
| 2447 | * should we detect the updated seqno part-way through the |
| 2448 | * GPU processing the request, we never over-estimate the |
| 2449 | * position of the head. |
| 2450 | */ |
Nick Hoath | 6d3d827 | 2015-01-15 13:10:39 +0000 | [diff] [blame] | 2451 | request->postfix = intel_ring_get_tail(ringbuf); |
Chris Wilson | a71d8d9 | 2012-02-15 11:25:36 +0000 | [diff] [blame] | 2452 | |
Oscar Mateo | 48e29f5 | 2014-07-24 17:04:29 +0100 | [diff] [blame] | 2453 | if (i915.enable_execlists) { |
Nick Hoath | 72f95af | 2015-01-15 13:10:37 +0000 | [diff] [blame] | 2454 | ret = ring->emit_request(ringbuf, request); |
Oscar Mateo | 48e29f5 | 2014-07-24 17:04:29 +0100 | [diff] [blame] | 2455 | if (ret) |
| 2456 | return ret; |
| 2457 | } else { |
| 2458 | ret = ring->add_request(ring); |
| 2459 | if (ret) |
| 2460 | return ret; |
| 2461 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2462 | |
Mika Kuoppala | 7d736f4 | 2013-06-12 15:01:39 +0300 | [diff] [blame] | 2463 | request->head = request_start; |
Nick Hoath | 6d3d827 | 2015-01-15 13:10:39 +0000 | [diff] [blame] | 2464 | request->tail = intel_ring_get_tail(ringbuf); |
Mika Kuoppala | 7d736f4 | 2013-06-12 15:01:39 +0300 | [diff] [blame] | 2465 | |
| 2466 | /* Whilst this request exists, batch_obj will be on the |
| 2467 | * active_list, and so will hold the active reference. Only when this |
| 2468 | * request is retired will the the batch_obj be moved onto the |
| 2469 | * inactive_list and lose its active reference. Hence we do not need |
| 2470 | * to explicitly hold another reference here. |
| 2471 | */ |
Chris Wilson | 9a7e0c2 | 2013-08-26 19:50:54 -0300 | [diff] [blame] | 2472 | request->batch_obj = obj; |
Mika Kuoppala | 0e50e96 | 2013-05-02 16:48:08 +0300 | [diff] [blame] | 2473 | |
Oscar Mateo | 48e29f5 | 2014-07-24 17:04:29 +0100 | [diff] [blame] | 2474 | if (!i915.enable_execlists) { |
| 2475 | /* Hold a reference to the current context so that we can inspect |
| 2476 | * it later in case a hangcheck error event fires. |
| 2477 | */ |
| 2478 | request->ctx = ring->last_context; |
| 2479 | if (request->ctx) |
| 2480 | i915_gem_context_reference(request->ctx); |
| 2481 | } |
Mika Kuoppala | 0e50e96 | 2013-05-02 16:48:08 +0300 | [diff] [blame] | 2482 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2483 | request->emitted_jiffies = jiffies; |
Zou Nan hai | 852835f | 2010-05-21 09:08:56 +0800 | [diff] [blame] | 2484 | list_add_tail(&request->list, &ring->request_list); |
Chris Wilson | 3bb73ab | 2012-07-20 12:40:59 +0100 | [diff] [blame] | 2485 | request->file_priv = NULL; |
Zou Nan hai | 852835f | 2010-05-21 09:08:56 +0800 | [diff] [blame] | 2486 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2487 | if (file) { |
| 2488 | struct drm_i915_file_private *file_priv = file->driver_priv; |
| 2489 | |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 2490 | spin_lock(&file_priv->mm.lock); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 2491 | request->file_priv = file_priv; |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 2492 | list_add_tail(&request->client_list, |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 2493 | &file_priv->mm.request_list); |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 2494 | spin_unlock(&file_priv->mm.lock); |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 2495 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2496 | |
John Harrison | 74328ee | 2014-11-24 18:49:38 +0000 | [diff] [blame] | 2497 | trace_i915_gem_request_add(request); |
John Harrison | 6259cea | 2014-11-24 18:49:29 +0000 | [diff] [blame] | 2498 | ring->outstanding_lazy_request = NULL; |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2499 | |
Daniel Vetter | 8725548 | 2014-11-19 20:36:48 +0100 | [diff] [blame] | 2500 | i915_queue_hangcheck(ring->dev); |
Mika Kuoppala | 10cd45b | 2013-07-03 17:22:08 +0300 | [diff] [blame] | 2501 | |
Daniel Vetter | 8725548 | 2014-11-19 20:36:48 +0100 | [diff] [blame] | 2502 | cancel_delayed_work_sync(&dev_priv->mm.idle_work); |
| 2503 | queue_delayed_work(dev_priv->wq, |
| 2504 | &dev_priv->mm.retire_work, |
| 2505 | round_jiffies_up_relative(HZ)); |
| 2506 | intel_mark_busy(dev_priv->dev); |
Daniel Vetter | cc889e0 | 2012-06-13 20:45:19 +0200 | [diff] [blame] | 2507 | |
Chris Wilson | 3cce469 | 2010-10-27 16:11:02 +0100 | [diff] [blame] | 2508 | return 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2509 | } |
| 2510 | |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 2511 | static inline void |
| 2512 | i915_gem_request_remove_from_client(struct drm_i915_gem_request *request) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2513 | { |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 2514 | struct drm_i915_file_private *file_priv = request->file_priv; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2515 | |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 2516 | if (!file_priv) |
| 2517 | return; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 2518 | |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 2519 | spin_lock(&file_priv->mm.lock); |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 2520 | list_del(&request->client_list); |
| 2521 | request->file_priv = NULL; |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 2522 | spin_unlock(&file_priv->mm.lock); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2523 | } |
| 2524 | |
Mika Kuoppala | 939fd76 | 2014-01-30 19:04:44 +0200 | [diff] [blame] | 2525 | static bool i915_context_is_banned(struct drm_i915_private *dev_priv, |
Oscar Mateo | 273497e | 2014-05-22 14:13:37 +0100 | [diff] [blame] | 2526 | const struct intel_context *ctx) |
Mika Kuoppala | be62acb | 2013-08-30 16:19:28 +0300 | [diff] [blame] | 2527 | { |
Mika Kuoppala | 44e2c07 | 2014-01-30 16:01:15 +0200 | [diff] [blame] | 2528 | unsigned long elapsed; |
Mika Kuoppala | be62acb | 2013-08-30 16:19:28 +0300 | [diff] [blame] | 2529 | |
Mika Kuoppala | 44e2c07 | 2014-01-30 16:01:15 +0200 | [diff] [blame] | 2530 | elapsed = get_seconds() - ctx->hang_stats.guilty_ts; |
| 2531 | |
| 2532 | if (ctx->hang_stats.banned) |
Mika Kuoppala | be62acb | 2013-08-30 16:19:28 +0300 | [diff] [blame] | 2533 | return true; |
| 2534 | |
Chris Wilson | 676fa57 | 2014-12-24 08:13:39 -0800 | [diff] [blame] | 2535 | if (ctx->hang_stats.ban_period_seconds && |
| 2536 | elapsed <= ctx->hang_stats.ban_period_seconds) { |
Ville Syrjälä | ccc7bed | 2014-02-21 16:26:47 +0200 | [diff] [blame] | 2537 | if (!i915_gem_context_is_default(ctx)) { |
Mika Kuoppala | 3fac897 | 2014-01-30 16:05:48 +0200 | [diff] [blame] | 2538 | DRM_DEBUG("context hanging too fast, banning!\n"); |
Ville Syrjälä | ccc7bed | 2014-02-21 16:26:47 +0200 | [diff] [blame] | 2539 | return true; |
Mika Kuoppala | 88b4aa8 | 2014-03-28 18:18:18 +0200 | [diff] [blame] | 2540 | } else if (i915_stop_ring_allow_ban(dev_priv)) { |
| 2541 | if (i915_stop_ring_allow_warn(dev_priv)) |
| 2542 | DRM_ERROR("gpu hanging too fast, banning!\n"); |
Ville Syrjälä | ccc7bed | 2014-02-21 16:26:47 +0200 | [diff] [blame] | 2543 | return true; |
Mika Kuoppala | 3fac897 | 2014-01-30 16:05:48 +0200 | [diff] [blame] | 2544 | } |
Mika Kuoppala | be62acb | 2013-08-30 16:19:28 +0300 | [diff] [blame] | 2545 | } |
| 2546 | |
| 2547 | return false; |
| 2548 | } |
| 2549 | |
Mika Kuoppala | 939fd76 | 2014-01-30 19:04:44 +0200 | [diff] [blame] | 2550 | static void i915_set_reset_status(struct drm_i915_private *dev_priv, |
Oscar Mateo | 273497e | 2014-05-22 14:13:37 +0100 | [diff] [blame] | 2551 | struct intel_context *ctx, |
Mika Kuoppala | b6b0fac | 2014-01-30 19:04:43 +0200 | [diff] [blame] | 2552 | const bool guilty) |
Mika Kuoppala | aa60c66 | 2013-06-12 15:13:20 +0300 | [diff] [blame] | 2553 | { |
Mika Kuoppala | 44e2c07 | 2014-01-30 16:01:15 +0200 | [diff] [blame] | 2554 | struct i915_ctx_hang_stats *hs; |
| 2555 | |
| 2556 | if (WARN_ON(!ctx)) |
| 2557 | return; |
Mika Kuoppala | aa60c66 | 2013-06-12 15:13:20 +0300 | [diff] [blame] | 2558 | |
Mika Kuoppala | 44e2c07 | 2014-01-30 16:01:15 +0200 | [diff] [blame] | 2559 | hs = &ctx->hang_stats; |
| 2560 | |
| 2561 | if (guilty) { |
Mika Kuoppala | 939fd76 | 2014-01-30 19:04:44 +0200 | [diff] [blame] | 2562 | hs->banned = i915_context_is_banned(dev_priv, ctx); |
Mika Kuoppala | 44e2c07 | 2014-01-30 16:01:15 +0200 | [diff] [blame] | 2563 | hs->batch_active++; |
| 2564 | hs->guilty_ts = get_seconds(); |
| 2565 | } else { |
| 2566 | hs->batch_pending++; |
Mika Kuoppala | aa60c66 | 2013-06-12 15:13:20 +0300 | [diff] [blame] | 2567 | } |
| 2568 | } |
| 2569 | |
Mika Kuoppala | 0e50e96 | 2013-05-02 16:48:08 +0300 | [diff] [blame] | 2570 | static void i915_gem_free_request(struct drm_i915_gem_request *request) |
| 2571 | { |
| 2572 | list_del(&request->list); |
| 2573 | i915_gem_request_remove_from_client(request); |
| 2574 | |
John Harrison | abfe262 | 2014-11-24 18:49:24 +0000 | [diff] [blame] | 2575 | i915_gem_request_unreference(request); |
| 2576 | } |
| 2577 | |
| 2578 | void i915_gem_request_free(struct kref *req_ref) |
| 2579 | { |
| 2580 | struct drm_i915_gem_request *req = container_of(req_ref, |
| 2581 | typeof(*req), ref); |
| 2582 | struct intel_context *ctx = req->ctx; |
| 2583 | |
Thomas Daniel | 0794aed | 2014-11-25 10:39:25 +0000 | [diff] [blame] | 2584 | if (ctx) { |
| 2585 | if (i915.enable_execlists) { |
John Harrison | abfe262 | 2014-11-24 18:49:24 +0000 | [diff] [blame] | 2586 | struct intel_engine_cs *ring = req->ring; |
Mika Kuoppala | 0e50e96 | 2013-05-02 16:48:08 +0300 | [diff] [blame] | 2587 | |
Thomas Daniel | 0794aed | 2014-11-25 10:39:25 +0000 | [diff] [blame] | 2588 | if (ctx != ring->default_context) |
| 2589 | intel_lr_context_unpin(ring, ctx); |
| 2590 | } |
John Harrison | abfe262 | 2014-11-24 18:49:24 +0000 | [diff] [blame] | 2591 | |
Oscar Mateo | dcb4c12 | 2014-11-13 10:28:10 +0000 | [diff] [blame] | 2592 | i915_gem_context_unreference(ctx); |
| 2593 | } |
John Harrison | abfe262 | 2014-11-24 18:49:24 +0000 | [diff] [blame] | 2594 | |
| 2595 | kfree(req); |
Mika Kuoppala | 0e50e96 | 2013-05-02 16:48:08 +0300 | [diff] [blame] | 2596 | } |
| 2597 | |
Chris Wilson | 8d9fc7f | 2014-02-25 17:11:23 +0200 | [diff] [blame] | 2598 | struct drm_i915_gem_request * |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 2599 | i915_gem_find_active_request(struct intel_engine_cs *ring) |
Chris Wilson | 9375e44 | 2010-09-19 12:21:28 +0100 | [diff] [blame] | 2600 | { |
Chris Wilson | 4db080f | 2013-12-04 11:37:09 +0000 | [diff] [blame] | 2601 | struct drm_i915_gem_request *request; |
Mika Kuoppala | aa60c66 | 2013-06-12 15:13:20 +0300 | [diff] [blame] | 2602 | |
Chris Wilson | 4db080f | 2013-12-04 11:37:09 +0000 | [diff] [blame] | 2603 | list_for_each_entry(request, &ring->request_list, list) { |
John Harrison | 1b5a433 | 2014-11-24 18:49:42 +0000 | [diff] [blame] | 2604 | if (i915_gem_request_completed(request, false)) |
Chris Wilson | 4db080f | 2013-12-04 11:37:09 +0000 | [diff] [blame] | 2605 | continue; |
Mika Kuoppala | aa60c66 | 2013-06-12 15:13:20 +0300 | [diff] [blame] | 2606 | |
Mika Kuoppala | b6b0fac | 2014-01-30 19:04:43 +0200 | [diff] [blame] | 2607 | return request; |
Chris Wilson | 4db080f | 2013-12-04 11:37:09 +0000 | [diff] [blame] | 2608 | } |
Mika Kuoppala | b6b0fac | 2014-01-30 19:04:43 +0200 | [diff] [blame] | 2609 | |
| 2610 | return NULL; |
| 2611 | } |
| 2612 | |
| 2613 | static void i915_gem_reset_ring_status(struct drm_i915_private *dev_priv, |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 2614 | struct intel_engine_cs *ring) |
Mika Kuoppala | b6b0fac | 2014-01-30 19:04:43 +0200 | [diff] [blame] | 2615 | { |
| 2616 | struct drm_i915_gem_request *request; |
| 2617 | bool ring_hung; |
| 2618 | |
Chris Wilson | 8d9fc7f | 2014-02-25 17:11:23 +0200 | [diff] [blame] | 2619 | request = i915_gem_find_active_request(ring); |
Mika Kuoppala | b6b0fac | 2014-01-30 19:04:43 +0200 | [diff] [blame] | 2620 | |
| 2621 | if (request == NULL) |
| 2622 | return; |
| 2623 | |
| 2624 | ring_hung = ring->hangcheck.score >= HANGCHECK_SCORE_RING_HUNG; |
| 2625 | |
Mika Kuoppala | 939fd76 | 2014-01-30 19:04:44 +0200 | [diff] [blame] | 2626 | i915_set_reset_status(dev_priv, request->ctx, ring_hung); |
Mika Kuoppala | b6b0fac | 2014-01-30 19:04:43 +0200 | [diff] [blame] | 2627 | |
| 2628 | list_for_each_entry_continue(request, &ring->request_list, list) |
Mika Kuoppala | 939fd76 | 2014-01-30 19:04:44 +0200 | [diff] [blame] | 2629 | i915_set_reset_status(dev_priv, request->ctx, false); |
Chris Wilson | 4db080f | 2013-12-04 11:37:09 +0000 | [diff] [blame] | 2630 | } |
| 2631 | |
| 2632 | static void i915_gem_reset_ring_cleanup(struct drm_i915_private *dev_priv, |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 2633 | struct intel_engine_cs *ring) |
Chris Wilson | 4db080f | 2013-12-04 11:37:09 +0000 | [diff] [blame] | 2634 | { |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 2635 | while (!list_empty(&ring->active_list)) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2636 | struct drm_i915_gem_object *obj; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2637 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2638 | obj = list_first_entry(&ring->active_list, |
| 2639 | struct drm_i915_gem_object, |
| 2640 | ring_list); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2641 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 2642 | i915_gem_object_move_to_inactive(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2643 | } |
Ben Widawsky | 1d62bee | 2014-01-01 10:15:13 -0800 | [diff] [blame] | 2644 | |
| 2645 | /* |
Oscar Mateo | dcb4c12 | 2014-11-13 10:28:10 +0000 | [diff] [blame] | 2646 | * Clear the execlists queue up before freeing the requests, as those |
| 2647 | * are the ones that keep the context and ringbuffer backing objects |
| 2648 | * pinned in place. |
| 2649 | */ |
| 2650 | while (!list_empty(&ring->execlist_queue)) { |
Nick Hoath | 6d3d827 | 2015-01-15 13:10:39 +0000 | [diff] [blame] | 2651 | struct drm_i915_gem_request *submit_req; |
Oscar Mateo | dcb4c12 | 2014-11-13 10:28:10 +0000 | [diff] [blame] | 2652 | |
| 2653 | submit_req = list_first_entry(&ring->execlist_queue, |
Nick Hoath | 6d3d827 | 2015-01-15 13:10:39 +0000 | [diff] [blame] | 2654 | struct drm_i915_gem_request, |
Oscar Mateo | dcb4c12 | 2014-11-13 10:28:10 +0000 | [diff] [blame] | 2655 | execlist_link); |
| 2656 | list_del(&submit_req->execlist_link); |
| 2657 | intel_runtime_pm_put(dev_priv); |
Mika Kuoppala | 1197b4f | 2015-01-13 11:32:24 +0200 | [diff] [blame] | 2658 | |
| 2659 | if (submit_req->ctx != ring->default_context) |
| 2660 | intel_lr_context_unpin(ring, submit_req->ctx); |
| 2661 | |
Nick Hoath | b3a3899 | 2015-02-19 16:30:47 +0000 | [diff] [blame] | 2662 | i915_gem_request_unreference(submit_req); |
Oscar Mateo | dcb4c12 | 2014-11-13 10:28:10 +0000 | [diff] [blame] | 2663 | } |
| 2664 | |
| 2665 | /* |
Ben Widawsky | 1d62bee | 2014-01-01 10:15:13 -0800 | [diff] [blame] | 2666 | * We must free the requests after all the corresponding objects have |
| 2667 | * been moved off active lists. Which is the same order as the normal |
| 2668 | * retire_requests function does. This is important if object hold |
| 2669 | * implicit references on things like e.g. ppgtt address spaces through |
| 2670 | * the request. |
| 2671 | */ |
| 2672 | while (!list_empty(&ring->request_list)) { |
| 2673 | struct drm_i915_gem_request *request; |
| 2674 | |
| 2675 | request = list_first_entry(&ring->request_list, |
| 2676 | struct drm_i915_gem_request, |
| 2677 | list); |
| 2678 | |
| 2679 | i915_gem_free_request(request); |
| 2680 | } |
Chris Wilson | e3efda4 | 2014-04-09 09:19:41 +0100 | [diff] [blame] | 2681 | |
John Harrison | 6259cea | 2014-11-24 18:49:29 +0000 | [diff] [blame] | 2682 | /* This may not have been flushed before the reset, so clean it now */ |
| 2683 | i915_gem_request_assign(&ring->outstanding_lazy_request, NULL); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2684 | } |
| 2685 | |
Chris Wilson | 19b2dbd | 2013-06-12 10:15:12 +0100 | [diff] [blame] | 2686 | void i915_gem_restore_fences(struct drm_device *dev) |
Chris Wilson | 312817a | 2010-11-22 11:50:11 +0000 | [diff] [blame] | 2687 | { |
| 2688 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 2689 | int i; |
| 2690 | |
Daniel Vetter | 4b9de73 | 2011-10-09 21:52:02 +0200 | [diff] [blame] | 2691 | for (i = 0; i < dev_priv->num_fence_regs; i++) { |
Chris Wilson | 312817a | 2010-11-22 11:50:11 +0000 | [diff] [blame] | 2692 | struct drm_i915_fence_reg *reg = &dev_priv->fence_regs[i]; |
Chris Wilson | 7d2cb39 | 2010-11-27 17:38:29 +0000 | [diff] [blame] | 2693 | |
Daniel Vetter | 94a335d | 2013-07-17 14:51:28 +0200 | [diff] [blame] | 2694 | /* |
| 2695 | * Commit delayed tiling changes if we have an object still |
| 2696 | * attached to the fence, otherwise just clear the fence. |
| 2697 | */ |
| 2698 | if (reg->obj) { |
| 2699 | i915_gem_object_update_fence(reg->obj, reg, |
| 2700 | reg->obj->tiling_mode); |
| 2701 | } else { |
| 2702 | i915_gem_write_fence(dev, i, NULL); |
| 2703 | } |
Chris Wilson | 312817a | 2010-11-22 11:50:11 +0000 | [diff] [blame] | 2704 | } |
| 2705 | } |
| 2706 | |
Chris Wilson | 069efc1 | 2010-09-30 16:53:18 +0100 | [diff] [blame] | 2707 | void i915_gem_reset(struct drm_device *dev) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2708 | { |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 2709 | struct drm_i915_private *dev_priv = dev->dev_private; |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 2710 | struct intel_engine_cs *ring; |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2711 | int i; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2712 | |
Chris Wilson | 4db080f | 2013-12-04 11:37:09 +0000 | [diff] [blame] | 2713 | /* |
| 2714 | * Before we free the objects from the requests, we need to inspect |
| 2715 | * them for finding the guilty party. As the requests only borrow |
| 2716 | * their reference to the objects, the inspection must be done first. |
| 2717 | */ |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 2718 | for_each_ring(ring, dev_priv, i) |
Chris Wilson | 4db080f | 2013-12-04 11:37:09 +0000 | [diff] [blame] | 2719 | i915_gem_reset_ring_status(dev_priv, ring); |
| 2720 | |
| 2721 | for_each_ring(ring, dev_priv, i) |
| 2722 | i915_gem_reset_ring_cleanup(dev_priv, ring); |
Chris Wilson | dfaae39 | 2010-09-22 10:31:52 +0100 | [diff] [blame] | 2723 | |
Ben Widawsky | acce9ff | 2013-12-06 14:11:03 -0800 | [diff] [blame] | 2724 | i915_gem_context_reset(dev); |
| 2725 | |
Chris Wilson | 19b2dbd | 2013-06-12 10:15:12 +0100 | [diff] [blame] | 2726 | i915_gem_restore_fences(dev); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2727 | } |
| 2728 | |
| 2729 | /** |
| 2730 | * This function clears the request list as sequence numbers are passed. |
| 2731 | */ |
Chris Wilson | 1cf0ba1 | 2014-05-05 09:07:33 +0100 | [diff] [blame] | 2732 | void |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 2733 | i915_gem_retire_requests_ring(struct intel_engine_cs *ring) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2734 | { |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2735 | if (list_empty(&ring->request_list)) |
Karsten Wiese | 6c0594a | 2009-02-23 15:07:57 +0100 | [diff] [blame] | 2736 | return; |
| 2737 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2738 | WARN_ON(i915_verify_lists(ring->dev)); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2739 | |
Chris Wilson | e910303 | 2014-01-07 11:45:14 +0000 | [diff] [blame] | 2740 | /* Move any buffers on the active list that are no longer referenced |
| 2741 | * by the ringbuffer to the flushing/inactive lists as appropriate, |
| 2742 | * before we free the context associated with the requests. |
| 2743 | */ |
| 2744 | while (!list_empty(&ring->active_list)) { |
| 2745 | struct drm_i915_gem_object *obj; |
| 2746 | |
| 2747 | obj = list_first_entry(&ring->active_list, |
| 2748 | struct drm_i915_gem_object, |
| 2749 | ring_list); |
| 2750 | |
John Harrison | 1b5a433 | 2014-11-24 18:49:42 +0000 | [diff] [blame] | 2751 | if (!i915_gem_request_completed(obj->last_read_req, true)) |
Chris Wilson | e910303 | 2014-01-07 11:45:14 +0000 | [diff] [blame] | 2752 | break; |
| 2753 | |
| 2754 | i915_gem_object_move_to_inactive(obj); |
| 2755 | } |
| 2756 | |
| 2757 | |
Zou Nan hai | 852835f | 2010-05-21 09:08:56 +0800 | [diff] [blame] | 2758 | while (!list_empty(&ring->request_list)) { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2759 | struct drm_i915_gem_request *request; |
Oscar Mateo | 48e29f5 | 2014-07-24 17:04:29 +0100 | [diff] [blame] | 2760 | struct intel_ringbuffer *ringbuf; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2761 | |
Zou Nan hai | 852835f | 2010-05-21 09:08:56 +0800 | [diff] [blame] | 2762 | request = list_first_entry(&ring->request_list, |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2763 | struct drm_i915_gem_request, |
| 2764 | list); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2765 | |
John Harrison | 1b5a433 | 2014-11-24 18:49:42 +0000 | [diff] [blame] | 2766 | if (!i915_gem_request_completed(request, true)) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2767 | break; |
Chris Wilson | b84d5f0 | 2010-09-18 01:38:04 +0100 | [diff] [blame] | 2768 | |
John Harrison | 74328ee | 2014-11-24 18:49:38 +0000 | [diff] [blame] | 2769 | trace_i915_gem_request_retire(request); |
Oscar Mateo | 48e29f5 | 2014-07-24 17:04:29 +0100 | [diff] [blame] | 2770 | |
| 2771 | /* This is one of the few common intersection points |
| 2772 | * between legacy ringbuffer submission and execlists: |
| 2773 | * we need to tell them apart in order to find the correct |
| 2774 | * ringbuffer to which the request belongs to. |
| 2775 | */ |
| 2776 | if (i915.enable_execlists) { |
| 2777 | struct intel_context *ctx = request->ctx; |
| 2778 | ringbuf = ctx->engine[ring->id].ringbuf; |
| 2779 | } else |
| 2780 | ringbuf = ring->buffer; |
| 2781 | |
Chris Wilson | a71d8d9 | 2012-02-15 11:25:36 +0000 | [diff] [blame] | 2782 | /* We know the GPU must have read the request to have |
| 2783 | * sent us the seqno + interrupt, so use the position |
| 2784 | * of tail of the request to update the last known position |
| 2785 | * of the GPU head. |
| 2786 | */ |
Nick Hoath | 72f95af | 2015-01-15 13:10:37 +0000 | [diff] [blame] | 2787 | ringbuf->last_retired_head = request->postfix; |
Chris Wilson | b84d5f0 | 2010-09-18 01:38:04 +0100 | [diff] [blame] | 2788 | |
Mika Kuoppala | 0e50e96 | 2013-05-02 16:48:08 +0300 | [diff] [blame] | 2789 | i915_gem_free_request(request); |
Chris Wilson | b84d5f0 | 2010-09-18 01:38:04 +0100 | [diff] [blame] | 2790 | } |
| 2791 | |
John Harrison | 581c26e8 | 2014-11-24 18:49:39 +0000 | [diff] [blame] | 2792 | if (unlikely(ring->trace_irq_req && |
| 2793 | i915_gem_request_completed(ring->trace_irq_req, true))) { |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2794 | ring->irq_put(ring); |
John Harrison | 581c26e8 | 2014-11-24 18:49:39 +0000 | [diff] [blame] | 2795 | i915_gem_request_assign(&ring->trace_irq_req, NULL); |
Chris Wilson | 9d34e5d | 2009-09-24 05:26:06 +0100 | [diff] [blame] | 2796 | } |
Chris Wilson | 23bc598 | 2010-09-29 16:10:57 +0100 | [diff] [blame] | 2797 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 2798 | WARN_ON(i915_verify_lists(ring->dev)); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2799 | } |
| 2800 | |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 2801 | bool |
Chris Wilson | b09a1fe | 2010-07-23 23:18:49 +0100 | [diff] [blame] | 2802 | i915_gem_retire_requests(struct drm_device *dev) |
| 2803 | { |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 2804 | struct drm_i915_private *dev_priv = dev->dev_private; |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 2805 | struct intel_engine_cs *ring; |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 2806 | bool idle = true; |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 2807 | int i; |
Chris Wilson | b09a1fe | 2010-07-23 23:18:49 +0100 | [diff] [blame] | 2808 | |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 2809 | for_each_ring(ring, dev_priv, i) { |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 2810 | i915_gem_retire_requests_ring(ring); |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 2811 | idle &= list_empty(&ring->request_list); |
Thomas Daniel | c86ee3a9 | 2014-11-13 10:27:05 +0000 | [diff] [blame] | 2812 | if (i915.enable_execlists) { |
| 2813 | unsigned long flags; |
| 2814 | |
| 2815 | spin_lock_irqsave(&ring->execlist_lock, flags); |
| 2816 | idle &= list_empty(&ring->execlist_queue); |
| 2817 | spin_unlock_irqrestore(&ring->execlist_lock, flags); |
| 2818 | |
| 2819 | intel_execlists_retire_requests(ring); |
| 2820 | } |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 2821 | } |
| 2822 | |
| 2823 | if (idle) |
| 2824 | mod_delayed_work(dev_priv->wq, |
| 2825 | &dev_priv->mm.idle_work, |
| 2826 | msecs_to_jiffies(100)); |
| 2827 | |
| 2828 | return idle; |
Chris Wilson | b09a1fe | 2010-07-23 23:18:49 +0100 | [diff] [blame] | 2829 | } |
| 2830 | |
Daniel Vetter | 75ef9da | 2010-08-21 00:25:16 +0200 | [diff] [blame] | 2831 | static void |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2832 | i915_gem_retire_work_handler(struct work_struct *work) |
| 2833 | { |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 2834 | struct drm_i915_private *dev_priv = |
| 2835 | container_of(work, typeof(*dev_priv), mm.retire_work.work); |
| 2836 | struct drm_device *dev = dev_priv->dev; |
Chris Wilson | 0a58705 | 2011-01-09 21:05:44 +0000 | [diff] [blame] | 2837 | bool idle; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2838 | |
Chris Wilson | 891b48c | 2010-09-29 12:26:37 +0100 | [diff] [blame] | 2839 | /* Come back later if the device is busy... */ |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 2840 | idle = false; |
| 2841 | if (mutex_trylock(&dev->struct_mutex)) { |
| 2842 | idle = i915_gem_retire_requests(dev); |
| 2843 | mutex_unlock(&dev->struct_mutex); |
| 2844 | } |
| 2845 | if (!idle) |
Chris Wilson | bcb4508 | 2012-10-05 17:02:57 +0100 | [diff] [blame] | 2846 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, |
| 2847 | round_jiffies_up_relative(HZ)); |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 2848 | } |
Chris Wilson | 891b48c | 2010-09-29 12:26:37 +0100 | [diff] [blame] | 2849 | |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 2850 | static void |
| 2851 | i915_gem_idle_work_handler(struct work_struct *work) |
| 2852 | { |
| 2853 | struct drm_i915_private *dev_priv = |
| 2854 | container_of(work, typeof(*dev_priv), mm.idle_work.work); |
Zou Nan hai | d1b851f | 2010-05-21 09:08:57 +0800 | [diff] [blame] | 2855 | |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 2856 | intel_mark_idle(dev_priv->dev); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 2857 | } |
| 2858 | |
Ben Widawsky | 5816d64 | 2012-04-11 11:18:19 -0700 | [diff] [blame] | 2859 | /** |
Daniel Vetter | 30dfebf | 2012-06-01 15:21:23 +0200 | [diff] [blame] | 2860 | * Ensures that an object will eventually get non-busy by flushing any required |
| 2861 | * write domains, emitting any outstanding lazy request and retiring and |
| 2862 | * completed requests. |
| 2863 | */ |
| 2864 | static int |
| 2865 | i915_gem_object_flush_active(struct drm_i915_gem_object *obj) |
| 2866 | { |
John Harrison | 41c5241 | 2014-11-24 18:49:43 +0000 | [diff] [blame] | 2867 | struct intel_engine_cs *ring; |
Daniel Vetter | 30dfebf | 2012-06-01 15:21:23 +0200 | [diff] [blame] | 2868 | int ret; |
| 2869 | |
| 2870 | if (obj->active) { |
John Harrison | 41c5241 | 2014-11-24 18:49:43 +0000 | [diff] [blame] | 2871 | ring = i915_gem_request_get_ring(obj->last_read_req); |
| 2872 | |
John Harrison | b6660d5 | 2014-11-24 18:49:30 +0000 | [diff] [blame] | 2873 | ret = i915_gem_check_olr(obj->last_read_req); |
Daniel Vetter | 30dfebf | 2012-06-01 15:21:23 +0200 | [diff] [blame] | 2874 | if (ret) |
| 2875 | return ret; |
| 2876 | |
John Harrison | 41c5241 | 2014-11-24 18:49:43 +0000 | [diff] [blame] | 2877 | i915_gem_retire_requests_ring(ring); |
Daniel Vetter | 30dfebf | 2012-06-01 15:21:23 +0200 | [diff] [blame] | 2878 | } |
| 2879 | |
| 2880 | return 0; |
| 2881 | } |
| 2882 | |
| 2883 | /** |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2884 | * i915_gem_wait_ioctl - implements DRM_IOCTL_I915_GEM_WAIT |
| 2885 | * @DRM_IOCTL_ARGS: standard ioctl arguments |
| 2886 | * |
| 2887 | * Returns 0 if successful, else an error is returned with the remaining time in |
| 2888 | * the timeout parameter. |
| 2889 | * -ETIME: object is still busy after timeout |
| 2890 | * -ERESTARTSYS: signal interrupted the wait |
| 2891 | * -ENONENT: object doesn't exist |
| 2892 | * Also possible, but rare: |
| 2893 | * -EAGAIN: GPU wedged |
| 2894 | * -ENOMEM: damn |
| 2895 | * -ENODEV: Internal IRQ fail |
| 2896 | * -E?: The add request failed |
| 2897 | * |
| 2898 | * The wait ioctl with a timeout of 0 reimplements the busy ioctl. With any |
| 2899 | * non-zero timeout parameter the wait ioctl will wait for the given number of |
| 2900 | * nanoseconds on an object becoming unbusy. Since the wait itself does so |
| 2901 | * without holding struct_mutex the object may become re-busied before this |
| 2902 | * function completes. A similar but shorter * race condition exists in the busy |
| 2903 | * ioctl |
| 2904 | */ |
| 2905 | int |
| 2906 | i915_gem_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file) |
| 2907 | { |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 2908 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2909 | struct drm_i915_gem_wait *args = data; |
| 2910 | struct drm_i915_gem_object *obj; |
John Harrison | ff86588 | 2014-11-24 18:49:28 +0000 | [diff] [blame] | 2911 | struct drm_i915_gem_request *req; |
Daniel Vetter | f69061b | 2012-12-06 09:01:42 +0100 | [diff] [blame] | 2912 | unsigned reset_counter; |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2913 | int ret = 0; |
| 2914 | |
Daniel Vetter | 11b5d51 | 2014-09-29 15:31:26 +0200 | [diff] [blame] | 2915 | if (args->flags != 0) |
| 2916 | return -EINVAL; |
| 2917 | |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2918 | ret = i915_mutex_lock_interruptible(dev); |
| 2919 | if (ret) |
| 2920 | return ret; |
| 2921 | |
| 2922 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->bo_handle)); |
| 2923 | if (&obj->base == NULL) { |
| 2924 | mutex_unlock(&dev->struct_mutex); |
| 2925 | return -ENOENT; |
| 2926 | } |
| 2927 | |
Daniel Vetter | 30dfebf | 2012-06-01 15:21:23 +0200 | [diff] [blame] | 2928 | /* Need to make sure the object gets inactive eventually. */ |
| 2929 | ret = i915_gem_object_flush_active(obj); |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2930 | if (ret) |
| 2931 | goto out; |
| 2932 | |
John Harrison | 97b2a6a | 2014-11-24 18:49:26 +0000 | [diff] [blame] | 2933 | if (!obj->active || !obj->last_read_req) |
| 2934 | goto out; |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2935 | |
John Harrison | ff86588 | 2014-11-24 18:49:28 +0000 | [diff] [blame] | 2936 | req = obj->last_read_req; |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2937 | |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2938 | /* Do this after OLR check to make sure we make forward progress polling |
Chris Wilson | 762e458 | 2015-03-04 18:09:26 +0000 | [diff] [blame] | 2939 | * on this IOCTL with a timeout == 0 (like busy ioctl) |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2940 | */ |
Chris Wilson | 762e458 | 2015-03-04 18:09:26 +0000 | [diff] [blame] | 2941 | if (args->timeout_ns == 0) { |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2942 | ret = -ETIME; |
| 2943 | goto out; |
| 2944 | } |
| 2945 | |
| 2946 | drm_gem_object_unreference(&obj->base); |
Daniel Vetter | f69061b | 2012-12-06 09:01:42 +0100 | [diff] [blame] | 2947 | reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter); |
John Harrison | ff86588 | 2014-11-24 18:49:28 +0000 | [diff] [blame] | 2948 | i915_gem_request_reference(req); |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2949 | mutex_unlock(&dev->struct_mutex); |
| 2950 | |
Chris Wilson | 762e458 | 2015-03-04 18:09:26 +0000 | [diff] [blame] | 2951 | ret = __i915_wait_request(req, reset_counter, true, |
| 2952 | args->timeout_ns > 0 ? &args->timeout_ns : NULL, |
John Harrison | 9c65481 | 2014-11-24 18:49:35 +0000 | [diff] [blame] | 2953 | file->driver_priv); |
John Harrison | ff86588 | 2014-11-24 18:49:28 +0000 | [diff] [blame] | 2954 | mutex_lock(&dev->struct_mutex); |
| 2955 | i915_gem_request_unreference(req); |
| 2956 | mutex_unlock(&dev->struct_mutex); |
| 2957 | return ret; |
Ben Widawsky | 23ba4fd | 2012-05-24 15:03:10 -0700 | [diff] [blame] | 2958 | |
| 2959 | out: |
| 2960 | drm_gem_object_unreference(&obj->base); |
| 2961 | mutex_unlock(&dev->struct_mutex); |
| 2962 | return ret; |
| 2963 | } |
| 2964 | |
| 2965 | /** |
Ben Widawsky | 5816d64 | 2012-04-11 11:18:19 -0700 | [diff] [blame] | 2966 | * i915_gem_object_sync - sync an object to a ring. |
| 2967 | * |
| 2968 | * @obj: object which may be in use on another ring. |
| 2969 | * @to: ring we wish to use the object on. May be NULL. |
| 2970 | * |
| 2971 | * This code is meant to abstract object synchronization with the GPU. |
| 2972 | * Calling with NULL implies synchronizing the object with the CPU |
| 2973 | * rather than a particular GPU ring. |
| 2974 | * |
| 2975 | * Returns 0 if successful, else propagates up the lower layer error. |
| 2976 | */ |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 2977 | int |
| 2978 | i915_gem_object_sync(struct drm_i915_gem_object *obj, |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 2979 | struct intel_engine_cs *to) |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 2980 | { |
John Harrison | 41c5241 | 2014-11-24 18:49:43 +0000 | [diff] [blame] | 2981 | struct intel_engine_cs *from; |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 2982 | u32 seqno; |
| 2983 | int ret, idx; |
| 2984 | |
John Harrison | 41c5241 | 2014-11-24 18:49:43 +0000 | [diff] [blame] | 2985 | from = i915_gem_request_get_ring(obj->last_read_req); |
| 2986 | |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 2987 | if (from == NULL || to == from) |
| 2988 | return 0; |
| 2989 | |
Ben Widawsky | 5816d64 | 2012-04-11 11:18:19 -0700 | [diff] [blame] | 2990 | if (to == NULL || !i915_semaphore_is_enabled(obj->base.dev)) |
Chris Wilson | 0201f1e | 2012-07-20 12:41:01 +0100 | [diff] [blame] | 2991 | return i915_gem_object_wait_rendering(obj, false); |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 2992 | |
| 2993 | idx = intel_ring_sync_index(from, to); |
| 2994 | |
John Harrison | 97b2a6a | 2014-11-24 18:49:26 +0000 | [diff] [blame] | 2995 | seqno = i915_gem_request_get_seqno(obj->last_read_req); |
Rodrigo Vivi | ddd4dbc | 2014-06-30 09:51:11 -0700 | [diff] [blame] | 2996 | /* Optimization: Avoid semaphore sync when we are sure we already |
| 2997 | * waited for an object with higher seqno */ |
Ben Widawsky | ebc348b | 2014-04-29 14:52:28 -0700 | [diff] [blame] | 2998 | if (seqno <= from->semaphore.sync_seqno[idx]) |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 2999 | return 0; |
| 3000 | |
John Harrison | b6660d5 | 2014-11-24 18:49:30 +0000 | [diff] [blame] | 3001 | ret = i915_gem_check_olr(obj->last_read_req); |
Ben Widawsky | b4aca01 | 2012-04-25 20:50:12 -0700 | [diff] [blame] | 3002 | if (ret) |
| 3003 | return ret; |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 3004 | |
John Harrison | 74328ee | 2014-11-24 18:49:38 +0000 | [diff] [blame] | 3005 | trace_i915_gem_ring_sync_to(from, to, obj->last_read_req); |
Ben Widawsky | ebc348b | 2014-04-29 14:52:28 -0700 | [diff] [blame] | 3006 | ret = to->semaphore.sync_to(to, from, seqno); |
Ben Widawsky | e3a5a22 | 2012-04-11 11:18:20 -0700 | [diff] [blame] | 3007 | if (!ret) |
John Harrison | 97b2a6a | 2014-11-24 18:49:26 +0000 | [diff] [blame] | 3008 | /* We use last_read_req because sync_to() |
Mika Kuoppala | 7b01e26 | 2012-11-28 17:18:45 +0200 | [diff] [blame] | 3009 | * might have just caused seqno wrap under |
| 3010 | * the radar. |
| 3011 | */ |
John Harrison | 97b2a6a | 2014-11-24 18:49:26 +0000 | [diff] [blame] | 3012 | from->semaphore.sync_seqno[idx] = |
| 3013 | i915_gem_request_get_seqno(obj->last_read_req); |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 3014 | |
Ben Widawsky | e3a5a22 | 2012-04-11 11:18:20 -0700 | [diff] [blame] | 3015 | return ret; |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 3016 | } |
| 3017 | |
Chris Wilson | b5ffc9b | 2011-04-13 22:06:03 +0100 | [diff] [blame] | 3018 | static void i915_gem_object_finish_gtt(struct drm_i915_gem_object *obj) |
| 3019 | { |
| 3020 | u32 old_write_domain, old_read_domains; |
| 3021 | |
Chris Wilson | b5ffc9b | 2011-04-13 22:06:03 +0100 | [diff] [blame] | 3022 | /* Force a pagefault for domain tracking on next user access */ |
| 3023 | i915_gem_release_mmap(obj); |
| 3024 | |
Keith Packard | b97c3d9 | 2011-06-24 21:02:59 -0700 | [diff] [blame] | 3025 | if ((obj->base.read_domains & I915_GEM_DOMAIN_GTT) == 0) |
| 3026 | return; |
| 3027 | |
Chris Wilson | 97c809fd | 2012-10-09 19:24:38 +0100 | [diff] [blame] | 3028 | /* Wait for any direct GTT access to complete */ |
| 3029 | mb(); |
| 3030 | |
Chris Wilson | b5ffc9b | 2011-04-13 22:06:03 +0100 | [diff] [blame] | 3031 | old_read_domains = obj->base.read_domains; |
| 3032 | old_write_domain = obj->base.write_domain; |
| 3033 | |
| 3034 | obj->base.read_domains &= ~I915_GEM_DOMAIN_GTT; |
| 3035 | obj->base.write_domain &= ~I915_GEM_DOMAIN_GTT; |
| 3036 | |
| 3037 | trace_i915_gem_object_change_domain(obj, |
| 3038 | old_read_domains, |
| 3039 | old_write_domain); |
| 3040 | } |
| 3041 | |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 3042 | int i915_vma_unbind(struct i915_vma *vma) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3043 | { |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 3044 | struct drm_i915_gem_object *obj = vma->obj; |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 3045 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
Chris Wilson | 43e28f0 | 2013-01-08 10:53:09 +0000 | [diff] [blame] | 3046 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3047 | |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 3048 | if (list_empty(&vma->vma_link)) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3049 | return 0; |
| 3050 | |
Daniel Vetter | 0ff501c | 2013-08-29 19:50:31 +0200 | [diff] [blame] | 3051 | if (!drm_mm_node_allocated(&vma->node)) { |
| 3052 | i915_gem_vma_destroy(vma); |
Daniel Vetter | 0ff501c | 2013-08-29 19:50:31 +0200 | [diff] [blame] | 3053 | return 0; |
| 3054 | } |
Ben Widawsky | 433544b | 2013-08-13 18:09:06 -0700 | [diff] [blame] | 3055 | |
Ben Widawsky | d7f46fc | 2013-12-06 14:10:55 -0800 | [diff] [blame] | 3056 | if (vma->pin_count) |
Chris Wilson | 31d8d65 | 2012-05-24 19:11:20 +0100 | [diff] [blame] | 3057 | return -EBUSY; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3058 | |
Chris Wilson | c4670ad | 2012-08-20 10:23:27 +0100 | [diff] [blame] | 3059 | BUG_ON(obj->pages == NULL); |
| 3060 | |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 3061 | ret = i915_gem_object_finish_gpu(obj); |
Chris Wilson | 1488fc0 | 2012-04-24 15:47:31 +0100 | [diff] [blame] | 3062 | if (ret) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3063 | return ret; |
Chris Wilson | 8dc1775 | 2010-07-23 23:18:51 +0100 | [diff] [blame] | 3064 | /* Continue on if we fail due to EIO, the GPU is hung so we |
| 3065 | * should be safe and we need to cleanup or else we might |
| 3066 | * cause memory corruption through use-after-free. |
| 3067 | */ |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 3068 | |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 3069 | if (i915_is_ggtt(vma->vm) && |
| 3070 | vma->ggtt_view.type == I915_GGTT_VIEW_NORMAL) { |
Daniel Vetter | 8b1bc9b | 2014-02-14 14:06:07 +0100 | [diff] [blame] | 3071 | i915_gem_object_finish_gtt(obj); |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 3072 | |
Daniel Vetter | 8b1bc9b | 2014-02-14 14:06:07 +0100 | [diff] [blame] | 3073 | /* release the fence reg _after_ flushing */ |
| 3074 | ret = i915_gem_object_put_fence(obj); |
| 3075 | if (ret) |
| 3076 | return ret; |
| 3077 | } |
Daniel Vetter | 96b47b6 | 2009-12-15 17:50:00 +0100 | [diff] [blame] | 3078 | |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 3079 | trace_i915_vma_unbind(vma); |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 3080 | |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 3081 | vma->unbind_vma(vma); |
| 3082 | |
Chris Wilson | 64bf930 | 2014-02-25 14:23:28 +0000 | [diff] [blame] | 3083 | list_del_init(&vma->mm_list); |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 3084 | if (i915_is_ggtt(vma->vm)) { |
| 3085 | if (vma->ggtt_view.type == I915_GGTT_VIEW_NORMAL) { |
| 3086 | obj->map_and_fenceable = false; |
| 3087 | } else if (vma->ggtt_view.pages) { |
| 3088 | sg_free_table(vma->ggtt_view.pages); |
| 3089 | kfree(vma->ggtt_view.pages); |
| 3090 | vma->ggtt_view.pages = NULL; |
| 3091 | } |
| 3092 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3093 | |
Ben Widawsky | 2f63315 | 2013-07-17 12:19:03 -0700 | [diff] [blame] | 3094 | drm_mm_remove_node(&vma->node); |
| 3095 | i915_gem_vma_destroy(vma); |
| 3096 | |
| 3097 | /* Since the unbound list is global, only move to that list if |
Daniel Vetter | b93dab6 | 2013-08-26 11:23:47 +0200 | [diff] [blame] | 3098 | * no more VMAs exist. */ |
Armin Reese | 9490edb | 2014-07-11 10:20:07 -0700 | [diff] [blame] | 3099 | if (list_empty(&obj->vma_list)) { |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 3100 | /* Throw away the active reference before |
| 3101 | * moving to the unbound list. */ |
| 3102 | i915_gem_object_retire(obj); |
| 3103 | |
Armin Reese | 9490edb | 2014-07-11 10:20:07 -0700 | [diff] [blame] | 3104 | i915_gem_gtt_finish_object(obj); |
Ben Widawsky | 2f63315 | 2013-07-17 12:19:03 -0700 | [diff] [blame] | 3105 | list_move_tail(&obj->global_list, &dev_priv->mm.unbound_list); |
Armin Reese | 9490edb | 2014-07-11 10:20:07 -0700 | [diff] [blame] | 3106 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3107 | |
Chris Wilson | 70903c3 | 2013-12-04 09:59:09 +0000 | [diff] [blame] | 3108 | /* And finally now the object is completely decoupled from this vma, |
| 3109 | * we can drop its hold on the backing storage and allow it to be |
| 3110 | * reaped by the shrinker. |
| 3111 | */ |
| 3112 | i915_gem_object_unpin_pages(obj); |
| 3113 | |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 3114 | return 0; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 3115 | } |
| 3116 | |
Ben Widawsky | b2da9fe | 2012-04-26 16:02:58 -0700 | [diff] [blame] | 3117 | int i915_gpu_idle(struct drm_device *dev) |
Daniel Vetter | 4df2faf | 2010-02-19 11:52:00 +0100 | [diff] [blame] | 3118 | { |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 3119 | struct drm_i915_private *dev_priv = dev->dev_private; |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 3120 | struct intel_engine_cs *ring; |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 3121 | int ret, i; |
Daniel Vetter | 4df2faf | 2010-02-19 11:52:00 +0100 | [diff] [blame] | 3122 | |
Daniel Vetter | 4df2faf | 2010-02-19 11:52:00 +0100 | [diff] [blame] | 3123 | /* Flush everything onto the inactive list. */ |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 3124 | for_each_ring(ring, dev_priv, i) { |
Thomas Daniel | ecdb5fd | 2014-08-20 16:29:24 +0100 | [diff] [blame] | 3125 | if (!i915.enable_execlists) { |
| 3126 | ret = i915_switch_context(ring, ring->default_context); |
| 3127 | if (ret) |
| 3128 | return ret; |
| 3129 | } |
Ben Widawsky | b6c7488 | 2012-08-14 14:35:14 -0700 | [diff] [blame] | 3130 | |
Chris Wilson | 3e96050 | 2012-11-27 16:22:54 +0000 | [diff] [blame] | 3131 | ret = intel_ring_idle(ring); |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 3132 | if (ret) |
| 3133 | return ret; |
| 3134 | } |
Zou Nan hai | d1b851f | 2010-05-21 09:08:57 +0800 | [diff] [blame] | 3135 | |
Daniel Vetter | 8a1a49f | 2010-02-11 22:29:04 +0100 | [diff] [blame] | 3136 | return 0; |
Daniel Vetter | 4df2faf | 2010-02-19 11:52:00 +0100 | [diff] [blame] | 3137 | } |
| 3138 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3139 | static void i965_write_fence_reg(struct drm_device *dev, int reg, |
| 3140 | struct drm_i915_gem_object *obj) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3141 | { |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 3142 | struct drm_i915_private *dev_priv = dev->dev_private; |
Imre Deak | 56c844e | 2013-01-07 21:47:34 +0200 | [diff] [blame] | 3143 | int fence_reg; |
| 3144 | int fence_pitch_shift; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3145 | |
Imre Deak | 56c844e | 2013-01-07 21:47:34 +0200 | [diff] [blame] | 3146 | if (INTEL_INFO(dev)->gen >= 6) { |
| 3147 | fence_reg = FENCE_REG_SANDYBRIDGE_0; |
| 3148 | fence_pitch_shift = SANDYBRIDGE_FENCE_PITCH_SHIFT; |
| 3149 | } else { |
| 3150 | fence_reg = FENCE_REG_965_0; |
| 3151 | fence_pitch_shift = I965_FENCE_PITCH_SHIFT; |
| 3152 | } |
| 3153 | |
Chris Wilson | d18b961 | 2013-07-10 13:36:23 +0100 | [diff] [blame] | 3154 | fence_reg += reg * 8; |
| 3155 | |
| 3156 | /* To w/a incoherency with non-atomic 64-bit register updates, |
| 3157 | * we split the 64-bit update into two 32-bit writes. In order |
| 3158 | * for a partial fence not to be evaluated between writes, we |
| 3159 | * precede the update with write to turn off the fence register, |
| 3160 | * and only enable the fence as the last step. |
| 3161 | * |
| 3162 | * For extra levels of paranoia, we make sure each step lands |
| 3163 | * before applying the next step. |
| 3164 | */ |
| 3165 | I915_WRITE(fence_reg, 0); |
| 3166 | POSTING_READ(fence_reg); |
| 3167 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3168 | if (obj) { |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 3169 | u32 size = i915_gem_obj_ggtt_size(obj); |
Chris Wilson | d18b961 | 2013-07-10 13:36:23 +0100 | [diff] [blame] | 3170 | uint64_t val; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3171 | |
Bob Paauwe | af1a730 | 2014-12-18 09:51:26 -0800 | [diff] [blame] | 3172 | /* Adjust fence size to match tiled area */ |
| 3173 | if (obj->tiling_mode != I915_TILING_NONE) { |
| 3174 | uint32_t row_size = obj->stride * |
| 3175 | (obj->tiling_mode == I915_TILING_Y ? 32 : 8); |
| 3176 | size = (size / row_size) * row_size; |
| 3177 | } |
| 3178 | |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 3179 | val = (uint64_t)((i915_gem_obj_ggtt_offset(obj) + size - 4096) & |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3180 | 0xfffff000) << 32; |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 3181 | val |= i915_gem_obj_ggtt_offset(obj) & 0xfffff000; |
Imre Deak | 56c844e | 2013-01-07 21:47:34 +0200 | [diff] [blame] | 3182 | val |= (uint64_t)((obj->stride / 128) - 1) << fence_pitch_shift; |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3183 | if (obj->tiling_mode == I915_TILING_Y) |
| 3184 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; |
| 3185 | val |= I965_FENCE_REG_VALID; |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 3186 | |
Chris Wilson | d18b961 | 2013-07-10 13:36:23 +0100 | [diff] [blame] | 3187 | I915_WRITE(fence_reg + 4, val >> 32); |
| 3188 | POSTING_READ(fence_reg + 4); |
| 3189 | |
| 3190 | I915_WRITE(fence_reg + 0, val); |
| 3191 | POSTING_READ(fence_reg); |
| 3192 | } else { |
| 3193 | I915_WRITE(fence_reg + 4, 0); |
| 3194 | POSTING_READ(fence_reg + 4); |
| 3195 | } |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3196 | } |
| 3197 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3198 | static void i915_write_fence_reg(struct drm_device *dev, int reg, |
| 3199 | struct drm_i915_gem_object *obj) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3200 | { |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 3201 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3202 | u32 val; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3203 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3204 | if (obj) { |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 3205 | u32 size = i915_gem_obj_ggtt_size(obj); |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3206 | int pitch_val; |
| 3207 | int tile_width; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3208 | |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 3209 | WARN((i915_gem_obj_ggtt_offset(obj) & ~I915_FENCE_START_MASK) || |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3210 | (size & -size) != size || |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 3211 | (i915_gem_obj_ggtt_offset(obj) & (size - 1)), |
| 3212 | "object 0x%08lx [fenceable? %d] not 1M or pot-size (0x%08x) aligned\n", |
| 3213 | i915_gem_obj_ggtt_offset(obj), obj->map_and_fenceable, size); |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3214 | |
| 3215 | if (obj->tiling_mode == I915_TILING_Y && HAS_128_BYTE_Y_TILING(dev)) |
| 3216 | tile_width = 128; |
| 3217 | else |
| 3218 | tile_width = 512; |
| 3219 | |
| 3220 | /* Note: pitch better be a power of two tile widths */ |
| 3221 | pitch_val = obj->stride / tile_width; |
| 3222 | pitch_val = ffs(pitch_val) - 1; |
| 3223 | |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 3224 | val = i915_gem_obj_ggtt_offset(obj); |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3225 | if (obj->tiling_mode == I915_TILING_Y) |
| 3226 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; |
| 3227 | val |= I915_FENCE_SIZE_BITS(size); |
| 3228 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; |
| 3229 | val |= I830_FENCE_REG_VALID; |
| 3230 | } else |
| 3231 | val = 0; |
| 3232 | |
| 3233 | if (reg < 8) |
| 3234 | reg = FENCE_REG_830_0 + reg * 4; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3235 | else |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3236 | reg = FENCE_REG_945_8 + (reg - 8) * 4; |
Jesse Barnes | 0f973f2 | 2009-01-26 17:10:45 -0800 | [diff] [blame] | 3237 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3238 | I915_WRITE(reg, val); |
| 3239 | POSTING_READ(reg); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3240 | } |
| 3241 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3242 | static void i830_write_fence_reg(struct drm_device *dev, int reg, |
| 3243 | struct drm_i915_gem_object *obj) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3244 | { |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 3245 | struct drm_i915_private *dev_priv = dev->dev_private; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3246 | uint32_t val; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3247 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3248 | if (obj) { |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 3249 | u32 size = i915_gem_obj_ggtt_size(obj); |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3250 | uint32_t pitch_val; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3251 | |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 3252 | WARN((i915_gem_obj_ggtt_offset(obj) & ~I830_FENCE_START_MASK) || |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3253 | (size & -size) != size || |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 3254 | (i915_gem_obj_ggtt_offset(obj) & (size - 1)), |
| 3255 | "object 0x%08lx not 512K or pot-size 0x%08x aligned\n", |
| 3256 | i915_gem_obj_ggtt_offset(obj), size); |
Eric Anholt | e76a16d | 2009-05-26 17:44:56 -0700 | [diff] [blame] | 3257 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3258 | pitch_val = obj->stride / 128; |
| 3259 | pitch_val = ffs(pitch_val) - 1; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3260 | |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 3261 | val = i915_gem_obj_ggtt_offset(obj); |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3262 | if (obj->tiling_mode == I915_TILING_Y) |
| 3263 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; |
| 3264 | val |= I830_FENCE_SIZE_BITS(size); |
| 3265 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; |
| 3266 | val |= I830_FENCE_REG_VALID; |
| 3267 | } else |
| 3268 | val = 0; |
Daniel Vetter | c664278 | 2010-11-12 13:46:18 +0000 | [diff] [blame] | 3269 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3270 | I915_WRITE(FENCE_REG_830_0 + reg * 4, val); |
| 3271 | POSTING_READ(FENCE_REG_830_0 + reg * 4); |
| 3272 | } |
| 3273 | |
Chris Wilson | d0a5778 | 2012-10-09 19:24:37 +0100 | [diff] [blame] | 3274 | inline static bool i915_gem_object_needs_mb(struct drm_i915_gem_object *obj) |
| 3275 | { |
| 3276 | return obj && obj->base.read_domains & I915_GEM_DOMAIN_GTT; |
| 3277 | } |
| 3278 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3279 | static void i915_gem_write_fence(struct drm_device *dev, int reg, |
| 3280 | struct drm_i915_gem_object *obj) |
| 3281 | { |
Chris Wilson | d0a5778 | 2012-10-09 19:24:37 +0100 | [diff] [blame] | 3282 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 3283 | |
| 3284 | /* Ensure that all CPU reads are completed before installing a fence |
| 3285 | * and all writes before removing the fence. |
| 3286 | */ |
| 3287 | if (i915_gem_object_needs_mb(dev_priv->fence_regs[reg].obj)) |
| 3288 | mb(); |
| 3289 | |
Daniel Vetter | 94a335d | 2013-07-17 14:51:28 +0200 | [diff] [blame] | 3290 | WARN(obj && (!obj->stride || !obj->tiling_mode), |
| 3291 | "bogus fence setup with stride: 0x%x, tiling mode: %i\n", |
| 3292 | obj->stride, obj->tiling_mode); |
| 3293 | |
Rodrigo Vivi | ce38ab0 | 2014-12-04 06:48:10 -0800 | [diff] [blame] | 3294 | if (IS_GEN2(dev)) |
| 3295 | i830_write_fence_reg(dev, reg, obj); |
| 3296 | else if (IS_GEN3(dev)) |
| 3297 | i915_write_fence_reg(dev, reg, obj); |
| 3298 | else if (INTEL_INFO(dev)->gen >= 4) |
| 3299 | i965_write_fence_reg(dev, reg, obj); |
Chris Wilson | d0a5778 | 2012-10-09 19:24:37 +0100 | [diff] [blame] | 3300 | |
| 3301 | /* And similarly be paranoid that no direct access to this region |
| 3302 | * is reordered to before the fence is installed. |
| 3303 | */ |
| 3304 | if (i915_gem_object_needs_mb(obj)) |
| 3305 | mb(); |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3306 | } |
| 3307 | |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 3308 | static inline int fence_number(struct drm_i915_private *dev_priv, |
| 3309 | struct drm_i915_fence_reg *fence) |
| 3310 | { |
| 3311 | return fence - dev_priv->fence_regs; |
| 3312 | } |
| 3313 | |
| 3314 | static void i915_gem_object_update_fence(struct drm_i915_gem_object *obj, |
| 3315 | struct drm_i915_fence_reg *fence, |
| 3316 | bool enable) |
| 3317 | { |
Chris Wilson | 2dc8aae | 2013-05-22 17:08:06 +0100 | [diff] [blame] | 3318 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
Chris Wilson | 46a0b63 | 2013-07-10 13:36:24 +0100 | [diff] [blame] | 3319 | int reg = fence_number(dev_priv, fence); |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 3320 | |
Chris Wilson | 46a0b63 | 2013-07-10 13:36:24 +0100 | [diff] [blame] | 3321 | i915_gem_write_fence(obj->base.dev, reg, enable ? obj : NULL); |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 3322 | |
| 3323 | if (enable) { |
Chris Wilson | 46a0b63 | 2013-07-10 13:36:24 +0100 | [diff] [blame] | 3324 | obj->fence_reg = reg; |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 3325 | fence->obj = obj; |
| 3326 | list_move_tail(&fence->lru_list, &dev_priv->mm.fence_list); |
| 3327 | } else { |
| 3328 | obj->fence_reg = I915_FENCE_REG_NONE; |
| 3329 | fence->obj = NULL; |
| 3330 | list_del_init(&fence->lru_list); |
| 3331 | } |
Daniel Vetter | 94a335d | 2013-07-17 14:51:28 +0200 | [diff] [blame] | 3332 | obj->fence_dirty = false; |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 3333 | } |
| 3334 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 3335 | static int |
Chris Wilson | d0a5778 | 2012-10-09 19:24:37 +0100 | [diff] [blame] | 3336 | i915_gem_object_wait_fence(struct drm_i915_gem_object *obj) |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 3337 | { |
John Harrison | 97b2a6a | 2014-11-24 18:49:26 +0000 | [diff] [blame] | 3338 | if (obj->last_fenced_req) { |
Daniel Vetter | a4b3a57 | 2014-11-26 14:17:05 +0100 | [diff] [blame] | 3339 | int ret = i915_wait_request(obj->last_fenced_req); |
Chris Wilson | 1899184 | 2012-04-17 15:31:29 +0100 | [diff] [blame] | 3340 | if (ret) |
| 3341 | return ret; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 3342 | |
John Harrison | 97b2a6a | 2014-11-24 18:49:26 +0000 | [diff] [blame] | 3343 | i915_gem_request_assign(&obj->last_fenced_req, NULL); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 3344 | } |
| 3345 | |
| 3346 | return 0; |
| 3347 | } |
| 3348 | |
| 3349 | int |
| 3350 | i915_gem_object_put_fence(struct drm_i915_gem_object *obj) |
| 3351 | { |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 3352 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
Chris Wilson | f9c513e | 2013-03-26 11:29:27 +0000 | [diff] [blame] | 3353 | struct drm_i915_fence_reg *fence; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 3354 | int ret; |
| 3355 | |
Chris Wilson | d0a5778 | 2012-10-09 19:24:37 +0100 | [diff] [blame] | 3356 | ret = i915_gem_object_wait_fence(obj); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 3357 | if (ret) |
| 3358 | return ret; |
| 3359 | |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 3360 | if (obj->fence_reg == I915_FENCE_REG_NONE) |
| 3361 | return 0; |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 3362 | |
Chris Wilson | f9c513e | 2013-03-26 11:29:27 +0000 | [diff] [blame] | 3363 | fence = &dev_priv->fence_regs[obj->fence_reg]; |
| 3364 | |
Daniel Vetter | aff10b30 | 2014-02-14 14:06:05 +0100 | [diff] [blame] | 3365 | if (WARN_ON(fence->pin_count)) |
| 3366 | return -EBUSY; |
| 3367 | |
Chris Wilson | 6105080 | 2012-04-17 15:31:31 +0100 | [diff] [blame] | 3368 | i915_gem_object_fence_lost(obj); |
Chris Wilson | f9c513e | 2013-03-26 11:29:27 +0000 | [diff] [blame] | 3369 | i915_gem_object_update_fence(obj, fence, false); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 3370 | |
| 3371 | return 0; |
| 3372 | } |
| 3373 | |
| 3374 | static struct drm_i915_fence_reg * |
Chris Wilson | a360bb1 | 2012-04-17 15:31:25 +0100 | [diff] [blame] | 3375 | i915_find_fence_reg(struct drm_device *dev) |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 3376 | { |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 3377 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 8fe301a | 2012-04-17 15:31:28 +0100 | [diff] [blame] | 3378 | struct drm_i915_fence_reg *reg, *avail; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 3379 | int i; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 3380 | |
| 3381 | /* First try to find a free reg */ |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 3382 | avail = NULL; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 3383 | for (i = dev_priv->fence_reg_start; i < dev_priv->num_fence_regs; i++) { |
| 3384 | reg = &dev_priv->fence_regs[i]; |
| 3385 | if (!reg->obj) |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 3386 | return reg; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 3387 | |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 3388 | if (!reg->pin_count) |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 3389 | avail = reg; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 3390 | } |
| 3391 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 3392 | if (avail == NULL) |
Chris Wilson | 5dce5b93 | 2014-01-20 10:17:36 +0000 | [diff] [blame] | 3393 | goto deadlock; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 3394 | |
| 3395 | /* 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] | 3396 | list_for_each_entry(reg, &dev_priv->mm.fence_list, lru_list) { |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 3397 | if (reg->pin_count) |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 3398 | continue; |
| 3399 | |
Chris Wilson | 8fe301a | 2012-04-17 15:31:28 +0100 | [diff] [blame] | 3400 | return reg; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 3401 | } |
| 3402 | |
Chris Wilson | 5dce5b93 | 2014-01-20 10:17:36 +0000 | [diff] [blame] | 3403 | deadlock: |
| 3404 | /* Wait for completion of pending flips which consume fences */ |
| 3405 | if (intel_has_pending_fb_unpin(dev)) |
| 3406 | return ERR_PTR(-EAGAIN); |
| 3407 | |
| 3408 | return ERR_PTR(-EDEADLK); |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 3409 | } |
| 3410 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3411 | /** |
Chris Wilson | 9a5a53b | 2012-03-22 15:10:00 +0000 | [diff] [blame] | 3412 | * i915_gem_object_get_fence - set up fencing for an object |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3413 | * @obj: object to map through a fence reg |
| 3414 | * |
| 3415 | * When mapping objects through the GTT, userspace wants to be able to write |
| 3416 | * to them without having to worry about swizzling if the object is tiled. |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3417 | * This function walks the fence regs looking for a free one for @obj, |
| 3418 | * stealing one if it can't find any. |
| 3419 | * |
| 3420 | * It then sets up the reg based on the object's properties: address, pitch |
| 3421 | * and tiling format. |
Chris Wilson | 9a5a53b | 2012-03-22 15:10:00 +0000 | [diff] [blame] | 3422 | * |
| 3423 | * For an untiled surface, this removes any existing fence. |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3424 | */ |
Chris Wilson | 8c4b8c3 | 2009-06-17 22:08:52 +0100 | [diff] [blame] | 3425 | int |
Chris Wilson | 06d9813 | 2012-04-17 15:31:24 +0100 | [diff] [blame] | 3426 | i915_gem_object_get_fence(struct drm_i915_gem_object *obj) |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3427 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3428 | struct drm_device *dev = obj->base.dev; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3429 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 3430 | bool enable = obj->tiling_mode != I915_TILING_NONE; |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 3431 | struct drm_i915_fence_reg *reg; |
Daniel Vetter | ae3db24 | 2010-02-19 11:51:58 +0100 | [diff] [blame] | 3432 | int ret; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3433 | |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 3434 | /* Have we updated the tiling parameters upon the object and so |
| 3435 | * will need to serialise the write to the associated fence register? |
| 3436 | */ |
Chris Wilson | 5d82e3e | 2012-04-21 16:23:23 +0100 | [diff] [blame] | 3437 | if (obj->fence_dirty) { |
Chris Wilson | d0a5778 | 2012-10-09 19:24:37 +0100 | [diff] [blame] | 3438 | ret = i915_gem_object_wait_fence(obj); |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 3439 | if (ret) |
| 3440 | return ret; |
| 3441 | } |
Chris Wilson | 9a5a53b | 2012-03-22 15:10:00 +0000 | [diff] [blame] | 3442 | |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 3443 | /* 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] | 3444 | if (obj->fence_reg != I915_FENCE_REG_NONE) { |
| 3445 | reg = &dev_priv->fence_regs[obj->fence_reg]; |
Chris Wilson | 5d82e3e | 2012-04-21 16:23:23 +0100 | [diff] [blame] | 3446 | if (!obj->fence_dirty) { |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 3447 | list_move_tail(®->lru_list, |
| 3448 | &dev_priv->mm.fence_list); |
| 3449 | return 0; |
| 3450 | } |
| 3451 | } else if (enable) { |
Chris Wilson | e6a8446 | 2014-08-11 12:00:12 +0200 | [diff] [blame] | 3452 | if (WARN_ON(!obj->map_and_fenceable)) |
| 3453 | return -EINVAL; |
| 3454 | |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 3455 | reg = i915_find_fence_reg(dev); |
Chris Wilson | 5dce5b93 | 2014-01-20 10:17:36 +0000 | [diff] [blame] | 3456 | if (IS_ERR(reg)) |
| 3457 | return PTR_ERR(reg); |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 3458 | |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 3459 | if (reg->obj) { |
| 3460 | struct drm_i915_gem_object *old = reg->obj; |
| 3461 | |
Chris Wilson | d0a5778 | 2012-10-09 19:24:37 +0100 | [diff] [blame] | 3462 | ret = i915_gem_object_wait_fence(old); |
Chris Wilson | 29c5a58 | 2011-03-17 15:23:22 +0000 | [diff] [blame] | 3463 | if (ret) |
| 3464 | return ret; |
| 3465 | |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 3466 | i915_gem_object_fence_lost(old); |
Chris Wilson | 29c5a58 | 2011-03-17 15:23:22 +0000 | [diff] [blame] | 3467 | } |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 3468 | } else |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 3469 | return 0; |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 3470 | |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 3471 | i915_gem_object_update_fence(obj, reg, enable); |
Chris Wilson | 1441574 | 2012-04-17 15:31:33 +0100 | [diff] [blame] | 3472 | |
Chris Wilson | 9ce079e | 2012-04-17 15:31:30 +0100 | [diff] [blame] | 3473 | return 0; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3474 | } |
| 3475 | |
Chris Wilson | 4144f9b | 2014-09-11 08:43:48 +0100 | [diff] [blame] | 3476 | static bool i915_gem_valid_gtt_space(struct i915_vma *vma, |
Chris Wilson | 42d6ab4 | 2012-07-26 11:49:32 +0100 | [diff] [blame] | 3477 | unsigned long cache_level) |
| 3478 | { |
Chris Wilson | 4144f9b | 2014-09-11 08:43:48 +0100 | [diff] [blame] | 3479 | struct drm_mm_node *gtt_space = &vma->node; |
Chris Wilson | 42d6ab4 | 2012-07-26 11:49:32 +0100 | [diff] [blame] | 3480 | struct drm_mm_node *other; |
| 3481 | |
Chris Wilson | 4144f9b | 2014-09-11 08:43:48 +0100 | [diff] [blame] | 3482 | /* |
| 3483 | * On some machines we have to be careful when putting differing types |
| 3484 | * of snoopable memory together to avoid the prefetcher crossing memory |
| 3485 | * domains and dying. During vm initialisation, we decide whether or not |
| 3486 | * these constraints apply and set the drm_mm.color_adjust |
| 3487 | * appropriately. |
Chris Wilson | 42d6ab4 | 2012-07-26 11:49:32 +0100 | [diff] [blame] | 3488 | */ |
Chris Wilson | 4144f9b | 2014-09-11 08:43:48 +0100 | [diff] [blame] | 3489 | if (vma->vm->mm.color_adjust == NULL) |
Chris Wilson | 42d6ab4 | 2012-07-26 11:49:32 +0100 | [diff] [blame] | 3490 | return true; |
| 3491 | |
Ben Widawsky | c6cfb32 | 2013-07-05 14:41:06 -0700 | [diff] [blame] | 3492 | if (!drm_mm_node_allocated(gtt_space)) |
Chris Wilson | 42d6ab4 | 2012-07-26 11:49:32 +0100 | [diff] [blame] | 3493 | return true; |
| 3494 | |
| 3495 | if (list_empty(>t_space->node_list)) |
| 3496 | return true; |
| 3497 | |
| 3498 | other = list_entry(gtt_space->node_list.prev, struct drm_mm_node, node_list); |
| 3499 | if (other->allocated && !other->hole_follows && other->color != cache_level) |
| 3500 | return false; |
| 3501 | |
| 3502 | other = list_entry(gtt_space->node_list.next, struct drm_mm_node, node_list); |
| 3503 | if (other->allocated && !gtt_space->hole_follows && other->color != cache_level) |
| 3504 | return false; |
| 3505 | |
| 3506 | return true; |
| 3507 | } |
| 3508 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 3509 | /** |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3510 | * Finds free space in the GTT aperture and binds the object there. |
| 3511 | */ |
Daniel Vetter | 262de14 | 2014-02-14 14:01:20 +0100 | [diff] [blame] | 3512 | static struct i915_vma * |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 3513 | i915_gem_object_bind_to_vm(struct drm_i915_gem_object *obj, |
| 3514 | struct i915_address_space *vm, |
| 3515 | unsigned alignment, |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 3516 | uint64_t flags, |
| 3517 | const struct i915_ggtt_view *view) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3518 | { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3519 | struct drm_device *dev = obj->base.dev; |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 3520 | struct drm_i915_private *dev_priv = dev->dev_private; |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 3521 | u32 size, fence_size, fence_alignment, unfenced_alignment; |
Chris Wilson | d23db88 | 2014-05-23 08:48:08 +0200 | [diff] [blame] | 3522 | unsigned long start = |
| 3523 | flags & PIN_OFFSET_BIAS ? flags & PIN_OFFSET_MASK : 0; |
| 3524 | unsigned long end = |
Daniel Vetter | 1ec9e26 | 2014-02-14 14:01:11 +0100 | [diff] [blame] | 3525 | flags & PIN_MAPPABLE ? dev_priv->gtt.mappable_end : vm->total; |
Ben Widawsky | 2f63315 | 2013-07-17 12:19:03 -0700 | [diff] [blame] | 3526 | struct i915_vma *vma; |
Chris Wilson | 07f73f6 | 2009-09-14 16:50:30 +0100 | [diff] [blame] | 3527 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3528 | |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 3529 | fence_size = i915_gem_get_gtt_size(dev, |
| 3530 | obj->base.size, |
| 3531 | obj->tiling_mode); |
| 3532 | fence_alignment = i915_gem_get_gtt_alignment(dev, |
| 3533 | obj->base.size, |
Imre Deak | d865110c | 2013-01-07 21:47:33 +0200 | [diff] [blame] | 3534 | obj->tiling_mode, true); |
Chris Wilson | e28f871 | 2011-07-18 13:11:49 -0700 | [diff] [blame] | 3535 | unfenced_alignment = |
Imre Deak | d865110c | 2013-01-07 21:47:33 +0200 | [diff] [blame] | 3536 | i915_gem_get_gtt_alignment(dev, |
Daniel Vetter | 1ec9e26 | 2014-02-14 14:01:11 +0100 | [diff] [blame] | 3537 | obj->base.size, |
| 3538 | obj->tiling_mode, false); |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 3539 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3540 | if (alignment == 0) |
Daniel Vetter | 1ec9e26 | 2014-02-14 14:01:11 +0100 | [diff] [blame] | 3541 | alignment = flags & PIN_MAPPABLE ? fence_alignment : |
Daniel Vetter | 5e78330 | 2010-11-14 22:32:36 +0100 | [diff] [blame] | 3542 | unfenced_alignment; |
Daniel Vetter | 1ec9e26 | 2014-02-14 14:01:11 +0100 | [diff] [blame] | 3543 | if (flags & PIN_MAPPABLE && alignment & (fence_alignment - 1)) { |
Chris Wilson | bd9b6a4 | 2014-02-10 09:03:50 +0000 | [diff] [blame] | 3544 | DRM_DEBUG("Invalid object alignment requested %u\n", alignment); |
Daniel Vetter | 262de14 | 2014-02-14 14:01:20 +0100 | [diff] [blame] | 3545 | return ERR_PTR(-EINVAL); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3546 | } |
| 3547 | |
Daniel Vetter | 1ec9e26 | 2014-02-14 14:01:11 +0100 | [diff] [blame] | 3548 | size = flags & PIN_MAPPABLE ? fence_size : obj->base.size; |
Chris Wilson | a00b10c | 2010-09-24 21:15:47 +0100 | [diff] [blame] | 3549 | |
Chris Wilson | 654fc60 | 2010-05-27 13:18:21 +0100 | [diff] [blame] | 3550 | /* If the object is bigger than the entire aperture, reject it early |
| 3551 | * before evicting everything in a vain attempt to find space. |
| 3552 | */ |
Chris Wilson | d23db88 | 2014-05-23 08:48:08 +0200 | [diff] [blame] | 3553 | if (obj->base.size > end) { |
| 3554 | DRM_DEBUG("Attempting to bind an object larger than the aperture: object=%zd > %s aperture=%lu\n", |
Chris Wilson | a36689c | 2013-05-21 16:58:49 +0100 | [diff] [blame] | 3555 | obj->base.size, |
Daniel Vetter | 1ec9e26 | 2014-02-14 14:01:11 +0100 | [diff] [blame] | 3556 | flags & PIN_MAPPABLE ? "mappable" : "total", |
Chris Wilson | d23db88 | 2014-05-23 08:48:08 +0200 | [diff] [blame] | 3557 | end); |
Daniel Vetter | 262de14 | 2014-02-14 14:01:20 +0100 | [diff] [blame] | 3558 | return ERR_PTR(-E2BIG); |
Chris Wilson | 654fc60 | 2010-05-27 13:18:21 +0100 | [diff] [blame] | 3559 | } |
| 3560 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 3561 | ret = i915_gem_object_get_pages(obj); |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 3562 | if (ret) |
Daniel Vetter | 262de14 | 2014-02-14 14:01:20 +0100 | [diff] [blame] | 3563 | return ERR_PTR(ret); |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 3564 | |
Chris Wilson | fbdda6f | 2012-11-20 10:45:16 +0000 | [diff] [blame] | 3565 | i915_gem_object_pin_pages(obj); |
| 3566 | |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 3567 | vma = i915_gem_obj_lookup_or_create_vma_view(obj, vm, view); |
Daniel Vetter | 262de14 | 2014-02-14 14:01:20 +0100 | [diff] [blame] | 3568 | if (IS_ERR(vma)) |
Daniel Vetter | bc6bc15 | 2013-07-22 12:12:38 +0200 | [diff] [blame] | 3569 | goto err_unpin; |
Ben Widawsky | 2f63315 | 2013-07-17 12:19:03 -0700 | [diff] [blame] | 3570 | |
Ben Widawsky | 0a9ae0d | 2013-05-25 12:26:35 -0700 | [diff] [blame] | 3571 | search_free: |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 3572 | ret = drm_mm_insert_node_in_range_generic(&vm->mm, &vma->node, |
Ben Widawsky | 0a9ae0d | 2013-05-25 12:26:35 -0700 | [diff] [blame] | 3573 | size, alignment, |
Chris Wilson | d23db88 | 2014-05-23 08:48:08 +0200 | [diff] [blame] | 3574 | obj->cache_level, |
| 3575 | start, end, |
Lauri Kasanen | 62347f9 | 2014-04-02 20:03:57 +0300 | [diff] [blame] | 3576 | DRM_MM_SEARCH_DEFAULT, |
| 3577 | DRM_MM_CREATE_DEFAULT); |
Chris Wilson | dc9dd7a | 2012-12-07 20:37:07 +0000 | [diff] [blame] | 3578 | if (ret) { |
Ben Widawsky | f6cd1f1 | 2013-07-31 17:00:11 -0700 | [diff] [blame] | 3579 | ret = i915_gem_evict_something(dev, vm, size, alignment, |
Chris Wilson | d23db88 | 2014-05-23 08:48:08 +0200 | [diff] [blame] | 3580 | obj->cache_level, |
| 3581 | start, end, |
| 3582 | flags); |
Chris Wilson | dc9dd7a | 2012-12-07 20:37:07 +0000 | [diff] [blame] | 3583 | if (ret == 0) |
| 3584 | goto search_free; |
Chris Wilson | 9731129 | 2009-09-21 00:22:34 +0100 | [diff] [blame] | 3585 | |
Daniel Vetter | bc6bc15 | 2013-07-22 12:12:38 +0200 | [diff] [blame] | 3586 | goto err_free_vma; |
Chris Wilson | dc9dd7a | 2012-12-07 20:37:07 +0000 | [diff] [blame] | 3587 | } |
Chris Wilson | 4144f9b | 2014-09-11 08:43:48 +0100 | [diff] [blame] | 3588 | if (WARN_ON(!i915_gem_valid_gtt_space(vma, obj->cache_level))) { |
Ben Widawsky | 2f63315 | 2013-07-17 12:19:03 -0700 | [diff] [blame] | 3589 | ret = -EINVAL; |
Daniel Vetter | bc6bc15 | 2013-07-22 12:12:38 +0200 | [diff] [blame] | 3590 | goto err_remove_node; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3591 | } |
| 3592 | |
Daniel Vetter | 7416390 | 2012-02-15 23:50:21 +0100 | [diff] [blame] | 3593 | ret = i915_gem_gtt_prepare_object(obj); |
Ben Widawsky | 2f63315 | 2013-07-17 12:19:03 -0700 | [diff] [blame] | 3594 | if (ret) |
Daniel Vetter | bc6bc15 | 2013-07-22 12:12:38 +0200 | [diff] [blame] | 3595 | goto err_remove_node; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3596 | |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 3597 | trace_i915_vma_bind(vma, flags); |
| 3598 | ret = i915_vma_bind(vma, obj->cache_level, |
| 3599 | flags & PIN_GLOBAL ? GLOBAL_BIND : 0); |
| 3600 | if (ret) |
| 3601 | goto err_finish_gtt; |
| 3602 | |
Ben Widawsky | 35c20a6 | 2013-05-31 11:28:48 -0700 | [diff] [blame] | 3603 | list_move_tail(&obj->global_list, &dev_priv->mm.bound_list); |
Ben Widawsky | ca191b1 | 2013-07-31 17:00:14 -0700 | [diff] [blame] | 3604 | list_add_tail(&vma->mm_list, &vm->inactive_list); |
Chris Wilson | bf1a109 | 2010-08-07 11:01:20 +0100 | [diff] [blame] | 3605 | |
Daniel Vetter | 262de14 | 2014-02-14 14:01:20 +0100 | [diff] [blame] | 3606 | return vma; |
Ben Widawsky | 2f63315 | 2013-07-17 12:19:03 -0700 | [diff] [blame] | 3607 | |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 3608 | err_finish_gtt: |
| 3609 | i915_gem_gtt_finish_object(obj); |
Daniel Vetter | bc6bc15 | 2013-07-22 12:12:38 +0200 | [diff] [blame] | 3610 | err_remove_node: |
Dan Carpenter | 6286ef9 | 2013-07-19 08:46:27 +0300 | [diff] [blame] | 3611 | drm_mm_remove_node(&vma->node); |
Daniel Vetter | bc6bc15 | 2013-07-22 12:12:38 +0200 | [diff] [blame] | 3612 | err_free_vma: |
Ben Widawsky | 2f63315 | 2013-07-17 12:19:03 -0700 | [diff] [blame] | 3613 | i915_gem_vma_destroy(vma); |
Daniel Vetter | 262de14 | 2014-02-14 14:01:20 +0100 | [diff] [blame] | 3614 | vma = ERR_PTR(ret); |
Daniel Vetter | bc6bc15 | 2013-07-22 12:12:38 +0200 | [diff] [blame] | 3615 | err_unpin: |
Ben Widawsky | 2f63315 | 2013-07-17 12:19:03 -0700 | [diff] [blame] | 3616 | i915_gem_object_unpin_pages(obj); |
Daniel Vetter | 262de14 | 2014-02-14 14:01:20 +0100 | [diff] [blame] | 3617 | return vma; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3618 | } |
| 3619 | |
Chris Wilson | 000433b | 2013-08-08 14:41:09 +0100 | [diff] [blame] | 3620 | bool |
Chris Wilson | 2c22569 | 2013-08-09 12:26:45 +0100 | [diff] [blame] | 3621 | i915_gem_clflush_object(struct drm_i915_gem_object *obj, |
| 3622 | bool force) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3623 | { |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3624 | /* If we don't have a page list set up, then we're not pinned |
| 3625 | * to GPU, and we can ignore the cache flush because it'll happen |
| 3626 | * again at bind time. |
| 3627 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3628 | if (obj->pages == NULL) |
Chris Wilson | 000433b | 2013-08-08 14:41:09 +0100 | [diff] [blame] | 3629 | return false; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 3630 | |
Imre Deak | 769ce46 | 2013-02-13 21:56:05 +0200 | [diff] [blame] | 3631 | /* |
| 3632 | * Stolen memory is always coherent with the GPU as it is explicitly |
| 3633 | * marked as wc by the system, or the system is cache-coherent. |
| 3634 | */ |
Chris Wilson | 6a2c423 | 2014-11-04 04:51:40 -0800 | [diff] [blame] | 3635 | if (obj->stolen || obj->phys_handle) |
Chris Wilson | 000433b | 2013-08-08 14:41:09 +0100 | [diff] [blame] | 3636 | return false; |
Imre Deak | 769ce46 | 2013-02-13 21:56:05 +0200 | [diff] [blame] | 3637 | |
Chris Wilson | 9c23f7f | 2011-03-29 16:59:52 -0700 | [diff] [blame] | 3638 | /* If the GPU is snooping the contents of the CPU cache, |
| 3639 | * we do not need to manually clear the CPU cache lines. However, |
| 3640 | * the caches are only snooped when the render cache is |
| 3641 | * flushed/invalidated. As we always have to emit invalidations |
| 3642 | * and flushes when moving into and out of the RENDER domain, correct |
| 3643 | * snooping behaviour occurs naturally as the result of our domain |
| 3644 | * tracking. |
| 3645 | */ |
Chris Wilson | 0f71979 | 2015-01-13 13:32:52 +0000 | [diff] [blame] | 3646 | if (!force && cpu_cache_is_coherent(obj->base.dev, obj->cache_level)) { |
| 3647 | obj->cache_dirty = true; |
Chris Wilson | 000433b | 2013-08-08 14:41:09 +0100 | [diff] [blame] | 3648 | return false; |
Chris Wilson | 0f71979 | 2015-01-13 13:32:52 +0000 | [diff] [blame] | 3649 | } |
Chris Wilson | 9c23f7f | 2011-03-29 16:59:52 -0700 | [diff] [blame] | 3650 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3651 | trace_i915_gem_object_clflush(obj); |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 3652 | drm_clflush_sg(obj->pages); |
Chris Wilson | 0f71979 | 2015-01-13 13:32:52 +0000 | [diff] [blame] | 3653 | obj->cache_dirty = false; |
Chris Wilson | 000433b | 2013-08-08 14:41:09 +0100 | [diff] [blame] | 3654 | |
| 3655 | return true; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3656 | } |
| 3657 | |
| 3658 | /** Flushes the GTT write domain for the object if it's dirty. */ |
| 3659 | static void |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3660 | 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] | 3661 | { |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3662 | uint32_t old_write_domain; |
| 3663 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3664 | if (obj->base.write_domain != I915_GEM_DOMAIN_GTT) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3665 | return; |
| 3666 | |
Chris Wilson | 63256ec | 2011-01-04 18:42:07 +0000 | [diff] [blame] | 3667 | /* No actual flushing is required for the GTT write domain. Writes |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3668 | * to it immediately go to main memory as far as we know, so there's |
| 3669 | * no chipset flush. It also doesn't land in render cache. |
Chris Wilson | 63256ec | 2011-01-04 18:42:07 +0000 | [diff] [blame] | 3670 | * |
| 3671 | * However, we do have to enforce the order so that all writes through |
| 3672 | * the GTT land before any writes to the device, such as updates to |
| 3673 | * the GATT itself. |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3674 | */ |
Chris Wilson | 63256ec | 2011-01-04 18:42:07 +0000 | [diff] [blame] | 3675 | wmb(); |
| 3676 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3677 | old_write_domain = obj->base.write_domain; |
| 3678 | obj->base.write_domain = 0; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3679 | |
Daniel Vetter | f99d706 | 2014-06-19 16:01:59 +0200 | [diff] [blame] | 3680 | intel_fb_obj_flush(obj, false); |
| 3681 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3682 | trace_i915_gem_object_change_domain(obj, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3683 | obj->base.read_domains, |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3684 | old_write_domain); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3685 | } |
| 3686 | |
| 3687 | /** Flushes the CPU write domain for the object if it's dirty. */ |
| 3688 | static void |
Daniel Vetter | e62b59e | 2015-01-21 14:53:48 +0100 | [diff] [blame] | 3689 | 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] | 3690 | { |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3691 | uint32_t old_write_domain; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3692 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3693 | if (obj->base.write_domain != I915_GEM_DOMAIN_CPU) |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3694 | return; |
| 3695 | |
Daniel Vetter | e62b59e | 2015-01-21 14:53:48 +0100 | [diff] [blame] | 3696 | if (i915_gem_clflush_object(obj, obj->pin_display)) |
Chris Wilson | 000433b | 2013-08-08 14:41:09 +0100 | [diff] [blame] | 3697 | i915_gem_chipset_flush(obj->base.dev); |
| 3698 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3699 | old_write_domain = obj->base.write_domain; |
| 3700 | obj->base.write_domain = 0; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3701 | |
Daniel Vetter | f99d706 | 2014-06-19 16:01:59 +0200 | [diff] [blame] | 3702 | intel_fb_obj_flush(obj, false); |
| 3703 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3704 | trace_i915_gem_object_change_domain(obj, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3705 | obj->base.read_domains, |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3706 | old_write_domain); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3707 | } |
| 3708 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 3709 | /** |
| 3710 | * Moves a single object to the GTT read, and possibly write domain. |
| 3711 | * |
| 3712 | * This function returns when the move is complete, including waiting on |
| 3713 | * flushes to occur. |
| 3714 | */ |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 3715 | int |
Chris Wilson | 2021746 | 2010-11-23 15:26:33 +0000 | [diff] [blame] | 3716 | 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] | 3717 | { |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3718 | uint32_t old_write_domain, old_read_domains; |
Chris Wilson | 43566de | 2015-01-02 16:29:29 +0530 | [diff] [blame] | 3719 | struct i915_vma *vma; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3720 | int ret; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 3721 | |
Chris Wilson | 8d7e3de | 2011-02-07 15:23:02 +0000 | [diff] [blame] | 3722 | if (obj->base.write_domain == I915_GEM_DOMAIN_GTT) |
| 3723 | return 0; |
| 3724 | |
Chris Wilson | 0201f1e | 2012-07-20 12:41:01 +0100 | [diff] [blame] | 3725 | ret = i915_gem_object_wait_rendering(obj, !write); |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 3726 | if (ret) |
| 3727 | return ret; |
| 3728 | |
Chris Wilson | c8725f3 | 2014-03-17 12:21:55 +0000 | [diff] [blame] | 3729 | i915_gem_object_retire(obj); |
Chris Wilson | 43566de | 2015-01-02 16:29:29 +0530 | [diff] [blame] | 3730 | |
| 3731 | /* Flush and acquire obj->pages so that we are coherent through |
| 3732 | * direct access in memory with previous cached writes through |
| 3733 | * shmemfs and that our cache domain tracking remains valid. |
| 3734 | * For example, if the obj->filp was moved to swap without us |
| 3735 | * being notified and releasing the pages, we would mistakenly |
| 3736 | * continue to assume that the obj remained out of the CPU cached |
| 3737 | * domain. |
| 3738 | */ |
| 3739 | ret = i915_gem_object_get_pages(obj); |
| 3740 | if (ret) |
| 3741 | return ret; |
| 3742 | |
Daniel Vetter | e62b59e | 2015-01-21 14:53:48 +0100 | [diff] [blame] | 3743 | i915_gem_object_flush_cpu_write_domain(obj); |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3744 | |
Chris Wilson | d0a5778 | 2012-10-09 19:24:37 +0100 | [diff] [blame] | 3745 | /* Serialise direct access to this object with the barriers for |
| 3746 | * coherent writes from the GPU, by effectively invalidating the |
| 3747 | * GTT domain upon first access. |
| 3748 | */ |
| 3749 | if ((obj->base.read_domains & I915_GEM_DOMAIN_GTT) == 0) |
| 3750 | mb(); |
| 3751 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3752 | old_write_domain = obj->base.write_domain; |
| 3753 | old_read_domains = obj->base.read_domains; |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 3754 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 3755 | /* It should now be out of any other write domains, and we can update |
| 3756 | * the domain values for our changes. |
| 3757 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3758 | BUG_ON((obj->base.write_domain & ~I915_GEM_DOMAIN_GTT) != 0); |
| 3759 | obj->base.read_domains |= I915_GEM_DOMAIN_GTT; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3760 | if (write) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3761 | obj->base.read_domains = I915_GEM_DOMAIN_GTT; |
| 3762 | obj->base.write_domain = I915_GEM_DOMAIN_GTT; |
| 3763 | obj->dirty = 1; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3764 | } |
| 3765 | |
Daniel Vetter | f99d706 | 2014-06-19 16:01:59 +0200 | [diff] [blame] | 3766 | if (write) |
| 3767 | intel_fb_obj_invalidate(obj, NULL); |
| 3768 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 3769 | trace_i915_gem_object_change_domain(obj, |
| 3770 | old_read_domains, |
| 3771 | old_write_domain); |
| 3772 | |
Chris Wilson | 8325a09 | 2012-04-24 15:52:35 +0100 | [diff] [blame] | 3773 | /* And bump the LRU for this access */ |
Chris Wilson | 43566de | 2015-01-02 16:29:29 +0530 | [diff] [blame] | 3774 | vma = i915_gem_obj_to_ggtt(obj); |
| 3775 | if (vma && drm_mm_node_allocated(&vma->node) && !obj->active) |
Chris Wilson | dc8cd1e | 2014-08-09 17:37:22 +0100 | [diff] [blame] | 3776 | list_move_tail(&vma->mm_list, |
Chris Wilson | 43566de | 2015-01-02 16:29:29 +0530 | [diff] [blame] | 3777 | &to_i915(obj->base.dev)->gtt.base.inactive_list); |
Chris Wilson | 8325a09 | 2012-04-24 15:52:35 +0100 | [diff] [blame] | 3778 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 3779 | return 0; |
| 3780 | } |
| 3781 | |
Chris Wilson | e4ffd17 | 2011-04-04 09:44:39 +0100 | [diff] [blame] | 3782 | int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj, |
| 3783 | enum i915_cache_level cache_level) |
| 3784 | { |
Daniel Vetter | 7bddb01 | 2012-02-09 17:15:47 +0100 | [diff] [blame] | 3785 | struct drm_device *dev = obj->base.dev; |
Chris Wilson | df6f783 | 2014-03-21 07:40:56 +0000 | [diff] [blame] | 3786 | struct i915_vma *vma, *next; |
Chris Wilson | e4ffd17 | 2011-04-04 09:44:39 +0100 | [diff] [blame] | 3787 | int ret; |
| 3788 | |
| 3789 | if (obj->cache_level == cache_level) |
| 3790 | return 0; |
| 3791 | |
Ben Widawsky | d7f46fc | 2013-12-06 14:10:55 -0800 | [diff] [blame] | 3792 | if (i915_gem_obj_is_pinned(obj)) { |
Chris Wilson | e4ffd17 | 2011-04-04 09:44:39 +0100 | [diff] [blame] | 3793 | DRM_DEBUG("can not change the cache level of pinned objects\n"); |
| 3794 | return -EBUSY; |
| 3795 | } |
| 3796 | |
Chris Wilson | df6f783 | 2014-03-21 07:40:56 +0000 | [diff] [blame] | 3797 | list_for_each_entry_safe(vma, next, &obj->vma_list, vma_link) { |
Chris Wilson | 4144f9b | 2014-09-11 08:43:48 +0100 | [diff] [blame] | 3798 | if (!i915_gem_valid_gtt_space(vma, cache_level)) { |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 3799 | ret = i915_vma_unbind(vma); |
Ben Widawsky | 3089c6f | 2013-07-31 17:00:03 -0700 | [diff] [blame] | 3800 | if (ret) |
| 3801 | return ret; |
Ben Widawsky | 3089c6f | 2013-07-31 17:00:03 -0700 | [diff] [blame] | 3802 | } |
Chris Wilson | 42d6ab4 | 2012-07-26 11:49:32 +0100 | [diff] [blame] | 3803 | } |
| 3804 | |
Ben Widawsky | 3089c6f | 2013-07-31 17:00:03 -0700 | [diff] [blame] | 3805 | if (i915_gem_obj_bound_any(obj)) { |
Chris Wilson | e4ffd17 | 2011-04-04 09:44:39 +0100 | [diff] [blame] | 3806 | ret = i915_gem_object_finish_gpu(obj); |
| 3807 | if (ret) |
| 3808 | return ret; |
| 3809 | |
| 3810 | i915_gem_object_finish_gtt(obj); |
| 3811 | |
| 3812 | /* Before SandyBridge, you could not use tiling or fence |
| 3813 | * registers with snooped memory, so relinquish any fences |
| 3814 | * currently pointing to our region in the aperture. |
| 3815 | */ |
Chris Wilson | 42d6ab4 | 2012-07-26 11:49:32 +0100 | [diff] [blame] | 3816 | if (INTEL_INFO(dev)->gen < 6) { |
Chris Wilson | e4ffd17 | 2011-04-04 09:44:39 +0100 | [diff] [blame] | 3817 | ret = i915_gem_object_put_fence(obj); |
| 3818 | if (ret) |
| 3819 | return ret; |
| 3820 | } |
| 3821 | |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 3822 | list_for_each_entry(vma, &obj->vma_list, vma_link) |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 3823 | if (drm_mm_node_allocated(&vma->node)) { |
| 3824 | ret = i915_vma_bind(vma, cache_level, |
| 3825 | vma->bound & GLOBAL_BIND); |
| 3826 | if (ret) |
| 3827 | return ret; |
| 3828 | } |
Chris Wilson | e4ffd17 | 2011-04-04 09:44:39 +0100 | [diff] [blame] | 3829 | } |
| 3830 | |
Chris Wilson | 2c22569 | 2013-08-09 12:26:45 +0100 | [diff] [blame] | 3831 | list_for_each_entry(vma, &obj->vma_list, vma_link) |
| 3832 | vma->node.color = cache_level; |
| 3833 | obj->cache_level = cache_level; |
| 3834 | |
Chris Wilson | 0f71979 | 2015-01-13 13:32:52 +0000 | [diff] [blame] | 3835 | if (obj->cache_dirty && |
| 3836 | obj->base.write_domain != I915_GEM_DOMAIN_CPU && |
| 3837 | cpu_write_needs_clflush(obj)) { |
| 3838 | if (i915_gem_clflush_object(obj, true)) |
| 3839 | i915_gem_chipset_flush(obj->base.dev); |
Chris Wilson | e4ffd17 | 2011-04-04 09:44:39 +0100 | [diff] [blame] | 3840 | } |
| 3841 | |
Chris Wilson | e4ffd17 | 2011-04-04 09:44:39 +0100 | [diff] [blame] | 3842 | return 0; |
| 3843 | } |
| 3844 | |
Ben Widawsky | 199adf4 | 2012-09-21 17:01:20 -0700 | [diff] [blame] | 3845 | int i915_gem_get_caching_ioctl(struct drm_device *dev, void *data, |
| 3846 | struct drm_file *file) |
Chris Wilson | e6994ae | 2012-07-10 10:27:08 +0100 | [diff] [blame] | 3847 | { |
Ben Widawsky | 199adf4 | 2012-09-21 17:01:20 -0700 | [diff] [blame] | 3848 | struct drm_i915_gem_caching *args = data; |
Chris Wilson | e6994ae | 2012-07-10 10:27:08 +0100 | [diff] [blame] | 3849 | struct drm_i915_gem_object *obj; |
| 3850 | int ret; |
| 3851 | |
| 3852 | ret = i915_mutex_lock_interruptible(dev); |
| 3853 | if (ret) |
| 3854 | return ret; |
| 3855 | |
| 3856 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
| 3857 | if (&obj->base == NULL) { |
| 3858 | ret = -ENOENT; |
| 3859 | goto unlock; |
| 3860 | } |
| 3861 | |
Chris Wilson | 651d794 | 2013-08-08 14:41:10 +0100 | [diff] [blame] | 3862 | switch (obj->cache_level) { |
| 3863 | case I915_CACHE_LLC: |
| 3864 | case I915_CACHE_L3_LLC: |
| 3865 | args->caching = I915_CACHING_CACHED; |
| 3866 | break; |
| 3867 | |
Chris Wilson | 4257d3b | 2013-08-08 14:41:11 +0100 | [diff] [blame] | 3868 | case I915_CACHE_WT: |
| 3869 | args->caching = I915_CACHING_DISPLAY; |
| 3870 | break; |
| 3871 | |
Chris Wilson | 651d794 | 2013-08-08 14:41:10 +0100 | [diff] [blame] | 3872 | default: |
| 3873 | args->caching = I915_CACHING_NONE; |
| 3874 | break; |
| 3875 | } |
Chris Wilson | e6994ae | 2012-07-10 10:27:08 +0100 | [diff] [blame] | 3876 | |
| 3877 | drm_gem_object_unreference(&obj->base); |
| 3878 | unlock: |
| 3879 | mutex_unlock(&dev->struct_mutex); |
| 3880 | return ret; |
| 3881 | } |
| 3882 | |
Ben Widawsky | 199adf4 | 2012-09-21 17:01:20 -0700 | [diff] [blame] | 3883 | int i915_gem_set_caching_ioctl(struct drm_device *dev, void *data, |
| 3884 | struct drm_file *file) |
Chris Wilson | e6994ae | 2012-07-10 10:27:08 +0100 | [diff] [blame] | 3885 | { |
Ben Widawsky | 199adf4 | 2012-09-21 17:01:20 -0700 | [diff] [blame] | 3886 | struct drm_i915_gem_caching *args = data; |
Chris Wilson | e6994ae | 2012-07-10 10:27:08 +0100 | [diff] [blame] | 3887 | struct drm_i915_gem_object *obj; |
| 3888 | enum i915_cache_level level; |
| 3889 | int ret; |
| 3890 | |
Ben Widawsky | 199adf4 | 2012-09-21 17:01:20 -0700 | [diff] [blame] | 3891 | switch (args->caching) { |
| 3892 | case I915_CACHING_NONE: |
Chris Wilson | e6994ae | 2012-07-10 10:27:08 +0100 | [diff] [blame] | 3893 | level = I915_CACHE_NONE; |
| 3894 | break; |
Ben Widawsky | 199adf4 | 2012-09-21 17:01:20 -0700 | [diff] [blame] | 3895 | case I915_CACHING_CACHED: |
Chris Wilson | e6994ae | 2012-07-10 10:27:08 +0100 | [diff] [blame] | 3896 | level = I915_CACHE_LLC; |
| 3897 | break; |
Chris Wilson | 4257d3b | 2013-08-08 14:41:11 +0100 | [diff] [blame] | 3898 | case I915_CACHING_DISPLAY: |
| 3899 | level = HAS_WT(dev) ? I915_CACHE_WT : I915_CACHE_NONE; |
| 3900 | break; |
Chris Wilson | e6994ae | 2012-07-10 10:27:08 +0100 | [diff] [blame] | 3901 | default: |
| 3902 | return -EINVAL; |
| 3903 | } |
| 3904 | |
Ben Widawsky | 3bc2913 | 2012-09-26 16:15:20 -0700 | [diff] [blame] | 3905 | ret = i915_mutex_lock_interruptible(dev); |
| 3906 | if (ret) |
| 3907 | return ret; |
| 3908 | |
Chris Wilson | e6994ae | 2012-07-10 10:27:08 +0100 | [diff] [blame] | 3909 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
| 3910 | if (&obj->base == NULL) { |
| 3911 | ret = -ENOENT; |
| 3912 | goto unlock; |
| 3913 | } |
| 3914 | |
| 3915 | ret = i915_gem_object_set_cache_level(obj, level); |
| 3916 | |
| 3917 | drm_gem_object_unreference(&obj->base); |
| 3918 | unlock: |
| 3919 | mutex_unlock(&dev->struct_mutex); |
| 3920 | return ret; |
| 3921 | } |
| 3922 | |
Chris Wilson | cc98b41 | 2013-08-09 12:25:09 +0100 | [diff] [blame] | 3923 | static bool is_pin_display(struct drm_i915_gem_object *obj) |
| 3924 | { |
Oscar Mateo | 1965643 | 2014-05-16 14:20:43 +0100 | [diff] [blame] | 3925 | struct i915_vma *vma; |
| 3926 | |
Oscar Mateo | 1965643 | 2014-05-16 14:20:43 +0100 | [diff] [blame] | 3927 | vma = i915_gem_obj_to_ggtt(obj); |
| 3928 | if (!vma) |
| 3929 | return false; |
| 3930 | |
Daniel Vetter | 4feb765 | 2014-11-24 11:21:52 +0100 | [diff] [blame] | 3931 | /* There are 2 sources that pin objects: |
Chris Wilson | cc98b41 | 2013-08-09 12:25:09 +0100 | [diff] [blame] | 3932 | * 1. The display engine (scanouts, sprites, cursors); |
| 3933 | * 2. Reservations for execbuffer; |
Chris Wilson | cc98b41 | 2013-08-09 12:25:09 +0100 | [diff] [blame] | 3934 | * |
| 3935 | * We can ignore reservations as we hold the struct_mutex and |
Daniel Vetter | 4feb765 | 2014-11-24 11:21:52 +0100 | [diff] [blame] | 3936 | * are only called outside of the reservation path. |
Chris Wilson | cc98b41 | 2013-08-09 12:25:09 +0100 | [diff] [blame] | 3937 | */ |
Daniel Vetter | 4feb765 | 2014-11-24 11:21:52 +0100 | [diff] [blame] | 3938 | return vma->pin_count; |
Chris Wilson | cc98b41 | 2013-08-09 12:25:09 +0100 | [diff] [blame] | 3939 | } |
| 3940 | |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3941 | /* |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3942 | * Prepare buffer for display plane (scanout, cursors, etc). |
| 3943 | * Can be called from an uninterruptible phase (modesetting) and allows |
| 3944 | * any flushes to be pipelined (for pageflips). |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3945 | */ |
| 3946 | int |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3947 | i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj, |
| 3948 | u32 alignment, |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 3949 | struct intel_engine_cs *pipelined) |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3950 | { |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3951 | u32 old_read_domains, old_write_domain; |
Oscar Mateo | 1965643 | 2014-05-16 14:20:43 +0100 | [diff] [blame] | 3952 | bool was_pin_display; |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3953 | int ret; |
| 3954 | |
John Harrison | 41c5241 | 2014-11-24 18:49:43 +0000 | [diff] [blame] | 3955 | if (pipelined != i915_gem_request_get_ring(obj->last_read_req)) { |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 3956 | ret = i915_gem_object_sync(obj, pipelined); |
| 3957 | if (ret) |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3958 | return ret; |
| 3959 | } |
| 3960 | |
Chris Wilson | cc98b41 | 2013-08-09 12:25:09 +0100 | [diff] [blame] | 3961 | /* Mark the pin_display early so that we account for the |
| 3962 | * display coherency whilst setting up the cache domains. |
| 3963 | */ |
Oscar Mateo | 1965643 | 2014-05-16 14:20:43 +0100 | [diff] [blame] | 3964 | was_pin_display = obj->pin_display; |
Chris Wilson | cc98b41 | 2013-08-09 12:25:09 +0100 | [diff] [blame] | 3965 | obj->pin_display = true; |
| 3966 | |
Eric Anholt | a7ef064 | 2011-03-29 16:59:54 -0700 | [diff] [blame] | 3967 | /* The display engine is not coherent with the LLC cache on gen6. As |
| 3968 | * a result, we make sure that the pinning that is about to occur is |
| 3969 | * done with uncached PTEs. This is lowest common denominator for all |
| 3970 | * chipsets. |
| 3971 | * |
| 3972 | * However for gen6+, we could do better by using the GFDT bit instead |
| 3973 | * of uncaching, which would allow us to flush all the LLC-cached data |
| 3974 | * with that bit in the PTE to main memory with just one PIPE_CONTROL. |
| 3975 | */ |
Chris Wilson | 651d794 | 2013-08-08 14:41:10 +0100 | [diff] [blame] | 3976 | ret = i915_gem_object_set_cache_level(obj, |
| 3977 | HAS_WT(obj->base.dev) ? I915_CACHE_WT : I915_CACHE_NONE); |
Eric Anholt | a7ef064 | 2011-03-29 16:59:54 -0700 | [diff] [blame] | 3978 | if (ret) |
Chris Wilson | cc98b41 | 2013-08-09 12:25:09 +0100 | [diff] [blame] | 3979 | goto err_unpin_display; |
Eric Anholt | a7ef064 | 2011-03-29 16:59:54 -0700 | [diff] [blame] | 3980 | |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3981 | /* As the user may map the buffer once pinned in the display plane |
| 3982 | * (e.g. libkms for the bootup splash), we have to ensure that we |
| 3983 | * always use map_and_fenceable for all scanout buffers. |
| 3984 | */ |
Daniel Vetter | 1ec9e26 | 2014-02-14 14:01:11 +0100 | [diff] [blame] | 3985 | ret = i915_gem_obj_ggtt_pin(obj, alignment, PIN_MAPPABLE); |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3986 | if (ret) |
Chris Wilson | cc98b41 | 2013-08-09 12:25:09 +0100 | [diff] [blame] | 3987 | goto err_unpin_display; |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3988 | |
Daniel Vetter | e62b59e | 2015-01-21 14:53:48 +0100 | [diff] [blame] | 3989 | i915_gem_object_flush_cpu_write_domain(obj); |
Chris Wilson | b118c1e | 2010-05-27 13:18:14 +0100 | [diff] [blame] | 3990 | |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3991 | old_write_domain = obj->base.write_domain; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3992 | old_read_domains = obj->base.read_domains; |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 3993 | |
| 3994 | /* It should now be out of any other write domains, and we can update |
| 3995 | * the domain values for our changes. |
| 3996 | */ |
Chris Wilson | e5f1d96 | 2012-07-20 12:41:00 +0100 | [diff] [blame] | 3997 | obj->base.write_domain = 0; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 3998 | obj->base.read_domains |= I915_GEM_DOMAIN_GTT; |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 3999 | |
| 4000 | trace_i915_gem_object_change_domain(obj, |
| 4001 | old_read_domains, |
Chris Wilson | 2da3b9b | 2011-04-14 09:41:17 +0100 | [diff] [blame] | 4002 | old_write_domain); |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 4003 | |
| 4004 | return 0; |
Chris Wilson | cc98b41 | 2013-08-09 12:25:09 +0100 | [diff] [blame] | 4005 | |
| 4006 | err_unpin_display: |
Oscar Mateo | 1965643 | 2014-05-16 14:20:43 +0100 | [diff] [blame] | 4007 | WARN_ON(was_pin_display != is_pin_display(obj)); |
| 4008 | obj->pin_display = was_pin_display; |
Chris Wilson | cc98b41 | 2013-08-09 12:25:09 +0100 | [diff] [blame] | 4009 | return ret; |
| 4010 | } |
| 4011 | |
| 4012 | void |
| 4013 | i915_gem_object_unpin_from_display_plane(struct drm_i915_gem_object *obj) |
| 4014 | { |
Ben Widawsky | d7f46fc | 2013-12-06 14:10:55 -0800 | [diff] [blame] | 4015 | i915_gem_object_ggtt_unpin(obj); |
Chris Wilson | cc98b41 | 2013-08-09 12:25:09 +0100 | [diff] [blame] | 4016 | obj->pin_display = is_pin_display(obj); |
Zhenyu Wang | b9241ea | 2009-11-25 13:09:39 +0800 | [diff] [blame] | 4017 | } |
| 4018 | |
Chris Wilson | 8534551 | 2010-11-13 09:49:11 +0000 | [diff] [blame] | 4019 | int |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 4020 | i915_gem_object_finish_gpu(struct drm_i915_gem_object *obj) |
Chris Wilson | 8534551 | 2010-11-13 09:49:11 +0000 | [diff] [blame] | 4021 | { |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 4022 | int ret; |
| 4023 | |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 4024 | if ((obj->base.read_domains & I915_GEM_GPU_DOMAINS) == 0) |
Chris Wilson | 8534551 | 2010-11-13 09:49:11 +0000 | [diff] [blame] | 4025 | return 0; |
| 4026 | |
Chris Wilson | 0201f1e | 2012-07-20 12:41:01 +0100 | [diff] [blame] | 4027 | ret = i915_gem_object_wait_rendering(obj, false); |
Chris Wilson | c501ae7 | 2011-12-14 13:57:23 +0100 | [diff] [blame] | 4028 | if (ret) |
| 4029 | return ret; |
| 4030 | |
Chris Wilson | a8198ee | 2011-04-13 22:04:09 +0100 | [diff] [blame] | 4031 | /* Ensure that we invalidate the GPU's caches and TLBs. */ |
| 4032 | obj->base.read_domains &= ~I915_GEM_GPU_DOMAINS; |
Chris Wilson | c501ae7 | 2011-12-14 13:57:23 +0100 | [diff] [blame] | 4033 | return 0; |
Chris Wilson | 8534551 | 2010-11-13 09:49:11 +0000 | [diff] [blame] | 4034 | } |
| 4035 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 4036 | /** |
| 4037 | * Moves a single object to the CPU read, and possibly write domain. |
| 4038 | * |
| 4039 | * This function returns when the move is complete, including waiting on |
| 4040 | * flushes to occur. |
| 4041 | */ |
Chris Wilson | dabdfe0 | 2012-03-26 10:10:27 +0200 | [diff] [blame] | 4042 | int |
Chris Wilson | 919926a | 2010-11-12 13:42:53 +0000 | [diff] [blame] | 4043 | 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] | 4044 | { |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 4045 | uint32_t old_write_domain, old_read_domains; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 4046 | int ret; |
| 4047 | |
Chris Wilson | 8d7e3de | 2011-02-07 15:23:02 +0000 | [diff] [blame] | 4048 | if (obj->base.write_domain == I915_GEM_DOMAIN_CPU) |
| 4049 | return 0; |
| 4050 | |
Chris Wilson | 0201f1e | 2012-07-20 12:41:01 +0100 | [diff] [blame] | 4051 | ret = i915_gem_object_wait_rendering(obj, !write); |
Chris Wilson | 8824178 | 2011-01-07 17:09:48 +0000 | [diff] [blame] | 4052 | if (ret) |
| 4053 | return ret; |
| 4054 | |
Chris Wilson | c8725f3 | 2014-03-17 12:21:55 +0000 | [diff] [blame] | 4055 | i915_gem_object_retire(obj); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 4056 | i915_gem_object_flush_gtt_write_domain(obj); |
| 4057 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4058 | old_write_domain = obj->base.write_domain; |
| 4059 | old_read_domains = obj->base.read_domains; |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 4060 | |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 4061 | /* Flush the CPU cache if it's still invalid. */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4062 | if ((obj->base.read_domains & I915_GEM_DOMAIN_CPU) == 0) { |
Chris Wilson | 2c22569 | 2013-08-09 12:26:45 +0100 | [diff] [blame] | 4063 | i915_gem_clflush_object(obj, false); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 4064 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4065 | obj->base.read_domains |= I915_GEM_DOMAIN_CPU; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 4066 | } |
| 4067 | |
| 4068 | /* It should now be out of any other write domains, and we can update |
| 4069 | * the domain values for our changes. |
| 4070 | */ |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4071 | BUG_ON((obj->base.write_domain & ~I915_GEM_DOMAIN_CPU) != 0); |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 4072 | |
| 4073 | /* If we're writing through the CPU, then the GPU read domains will |
| 4074 | * need to be invalidated at next use. |
| 4075 | */ |
| 4076 | if (write) { |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4077 | obj->base.read_domains = I915_GEM_DOMAIN_CPU; |
| 4078 | obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
Eric Anholt | e47c68e | 2008-11-14 13:35:19 -0800 | [diff] [blame] | 4079 | } |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 4080 | |
Daniel Vetter | f99d706 | 2014-06-19 16:01:59 +0200 | [diff] [blame] | 4081 | if (write) |
| 4082 | intel_fb_obj_invalidate(obj, NULL); |
| 4083 | |
Chris Wilson | 1c5d22f | 2009-08-25 11:15:50 +0100 | [diff] [blame] | 4084 | trace_i915_gem_object_change_domain(obj, |
| 4085 | old_read_domains, |
| 4086 | old_write_domain); |
| 4087 | |
Eric Anholt | 2ef7eea | 2008-11-10 10:53:25 -0800 | [diff] [blame] | 4088 | return 0; |
| 4089 | } |
| 4090 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4091 | /* Throttle our rendering by waiting until the ring has completed our requests |
| 4092 | * emitted over 20 msec ago. |
| 4093 | * |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 4094 | * Note that if we were to use the current jiffies each time around the loop, |
| 4095 | * we wouldn't escape the function with any frames outstanding if the time to |
| 4096 | * render a frame was over 20ms. |
| 4097 | * |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4098 | * This should get us reasonable parallelism between CPU and GPU but also |
| 4099 | * relatively low latency when blocking on a particular request to finish. |
| 4100 | */ |
| 4101 | static int |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 4102 | i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4103 | { |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 4104 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 4105 | struct drm_i915_file_private *file_priv = file->driver_priv; |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 4106 | unsigned long recent_enough = jiffies - msecs_to_jiffies(20); |
John Harrison | 54fb241 | 2014-11-24 18:49:27 +0000 | [diff] [blame] | 4107 | struct drm_i915_gem_request *request, *target = NULL; |
Daniel Vetter | f69061b | 2012-12-06 09:01:42 +0100 | [diff] [blame] | 4108 | unsigned reset_counter; |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 4109 | int ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4110 | |
Daniel Vetter | 308887a | 2012-11-14 17:14:06 +0100 | [diff] [blame] | 4111 | ret = i915_gem_wait_for_error(&dev_priv->gpu_error); |
| 4112 | if (ret) |
| 4113 | return ret; |
| 4114 | |
| 4115 | ret = i915_gem_check_wedge(&dev_priv->gpu_error, false); |
| 4116 | if (ret) |
| 4117 | return ret; |
Chris Wilson | e110e8d | 2011-01-26 15:39:14 +0000 | [diff] [blame] | 4118 | |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 4119 | spin_lock(&file_priv->mm.lock); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 4120 | list_for_each_entry(request, &file_priv->mm.request_list, client_list) { |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 4121 | if (time_after_eq(request->emitted_jiffies, recent_enough)) |
| 4122 | break; |
| 4123 | |
John Harrison | 54fb241 | 2014-11-24 18:49:27 +0000 | [diff] [blame] | 4124 | target = request; |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 4125 | } |
Daniel Vetter | f69061b | 2012-12-06 09:01:42 +0100 | [diff] [blame] | 4126 | reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter); |
John Harrison | ff86588 | 2014-11-24 18:49:28 +0000 | [diff] [blame] | 4127 | if (target) |
| 4128 | i915_gem_request_reference(target); |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 4129 | spin_unlock(&file_priv->mm.lock); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 4130 | |
John Harrison | 54fb241 | 2014-11-24 18:49:27 +0000 | [diff] [blame] | 4131 | if (target == NULL) |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 4132 | return 0; |
| 4133 | |
John Harrison | 9c65481 | 2014-11-24 18:49:35 +0000 | [diff] [blame] | 4134 | ret = __i915_wait_request(target, reset_counter, true, NULL, NULL); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 4135 | if (ret == 0) |
| 4136 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, 0); |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 4137 | |
John Harrison | ff86588 | 2014-11-24 18:49:28 +0000 | [diff] [blame] | 4138 | mutex_lock(&dev->struct_mutex); |
| 4139 | i915_gem_request_unreference(target); |
| 4140 | mutex_unlock(&dev->struct_mutex); |
| 4141 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4142 | return ret; |
| 4143 | } |
| 4144 | |
Chris Wilson | d23db88 | 2014-05-23 08:48:08 +0200 | [diff] [blame] | 4145 | static bool |
| 4146 | i915_vma_misplaced(struct i915_vma *vma, uint32_t alignment, uint64_t flags) |
| 4147 | { |
| 4148 | struct drm_i915_gem_object *obj = vma->obj; |
| 4149 | |
| 4150 | if (alignment && |
| 4151 | vma->node.start & (alignment - 1)) |
| 4152 | return true; |
| 4153 | |
| 4154 | if (flags & PIN_MAPPABLE && !obj->map_and_fenceable) |
| 4155 | return true; |
| 4156 | |
| 4157 | if (flags & PIN_OFFSET_BIAS && |
| 4158 | vma->node.start < (flags & PIN_OFFSET_MASK)) |
| 4159 | return true; |
| 4160 | |
| 4161 | return false; |
| 4162 | } |
| 4163 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4164 | int |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 4165 | i915_gem_object_pin_view(struct drm_i915_gem_object *obj, |
| 4166 | struct i915_address_space *vm, |
| 4167 | uint32_t alignment, |
| 4168 | uint64_t flags, |
| 4169 | const struct i915_ggtt_view *view) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4170 | { |
Ben Widawsky | 6e7186a | 2014-05-06 22:21:36 -0700 | [diff] [blame] | 4171 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 4172 | struct i915_vma *vma; |
Chris Wilson | ef79e17 | 2014-10-31 13:53:52 +0000 | [diff] [blame] | 4173 | unsigned bound; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4174 | int ret; |
| 4175 | |
Ben Widawsky | 6e7186a | 2014-05-06 22:21:36 -0700 | [diff] [blame] | 4176 | if (WARN_ON(vm == &dev_priv->mm.aliasing_ppgtt->base)) |
| 4177 | return -ENODEV; |
| 4178 | |
Daniel Vetter | bf3d149 | 2014-02-14 14:01:12 +0100 | [diff] [blame] | 4179 | if (WARN_ON(flags & (PIN_GLOBAL | PIN_MAPPABLE) && !i915_is_ggtt(vm))) |
Daniel Vetter | 1ec9e26 | 2014-02-14 14:01:11 +0100 | [diff] [blame] | 4180 | return -EINVAL; |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 4181 | |
Chris Wilson | c826c44 | 2014-10-31 13:53:53 +0000 | [diff] [blame] | 4182 | if (WARN_ON((flags & (PIN_MAPPABLE | PIN_GLOBAL)) == PIN_MAPPABLE)) |
| 4183 | return -EINVAL; |
| 4184 | |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 4185 | vma = i915_gem_obj_to_vma_view(obj, vm, view); |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 4186 | if (vma) { |
Ben Widawsky | d7f46fc | 2013-12-06 14:10:55 -0800 | [diff] [blame] | 4187 | if (WARN_ON(vma->pin_count == DRM_I915_GEM_OBJECT_MAX_PIN_COUNT)) |
| 4188 | return -EBUSY; |
| 4189 | |
Chris Wilson | d23db88 | 2014-05-23 08:48:08 +0200 | [diff] [blame] | 4190 | if (i915_vma_misplaced(vma, alignment, flags)) { |
Ben Widawsky | d7f46fc | 2013-12-06 14:10:55 -0800 | [diff] [blame] | 4191 | WARN(vma->pin_count, |
Chris Wilson | ae7d49d | 2010-08-04 12:37:41 +0100 | [diff] [blame] | 4192 | "bo is already pinned with incorrect alignment:" |
Ben Widawsky | f343c5f | 2013-07-05 14:41:04 -0700 | [diff] [blame] | 4193 | " offset=%lx, req.alignment=%x, req.map_and_fenceable=%d," |
Daniel Vetter | 75e9e91 | 2010-11-04 17:11:09 +0100 | [diff] [blame] | 4194 | " obj->map_and_fenceable=%d\n", |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 4195 | i915_gem_obj_offset_view(obj, vm, view->type), |
| 4196 | alignment, |
Chris Wilson | d23db88 | 2014-05-23 08:48:08 +0200 | [diff] [blame] | 4197 | !!(flags & PIN_MAPPABLE), |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4198 | obj->map_and_fenceable); |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 4199 | ret = i915_vma_unbind(vma); |
Chris Wilson | ac0c6b5 | 2010-05-27 13:18:18 +0100 | [diff] [blame] | 4200 | if (ret) |
| 4201 | return ret; |
Daniel Vetter | 8ea99c9 | 2014-02-14 14:01:21 +0100 | [diff] [blame] | 4202 | |
| 4203 | vma = NULL; |
Chris Wilson | ac0c6b5 | 2010-05-27 13:18:18 +0100 | [diff] [blame] | 4204 | } |
| 4205 | } |
| 4206 | |
Chris Wilson | ef79e17 | 2014-10-31 13:53:52 +0000 | [diff] [blame] | 4207 | bound = vma ? vma->bound : 0; |
Daniel Vetter | 8ea99c9 | 2014-02-14 14:01:21 +0100 | [diff] [blame] | 4208 | if (vma == NULL || !drm_mm_node_allocated(&vma->node)) { |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 4209 | vma = i915_gem_object_bind_to_vm(obj, vm, alignment, |
| 4210 | flags, view); |
Daniel Vetter | 262de14 | 2014-02-14 14:01:20 +0100 | [diff] [blame] | 4211 | if (IS_ERR(vma)) |
| 4212 | return PTR_ERR(vma); |
Chris Wilson | 22c344e | 2009-02-11 14:26:45 +0000 | [diff] [blame] | 4213 | } |
Jesse Barnes | 76446ca | 2009-12-17 22:05:42 -0500 | [diff] [blame] | 4214 | |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 4215 | if (flags & PIN_GLOBAL && !(vma->bound & GLOBAL_BIND)) { |
| 4216 | ret = i915_vma_bind(vma, obj->cache_level, GLOBAL_BIND); |
| 4217 | if (ret) |
| 4218 | return ret; |
| 4219 | } |
Daniel Vetter | 74898d7 | 2012-02-15 23:50:22 +0100 | [diff] [blame] | 4220 | |
Chris Wilson | ef79e17 | 2014-10-31 13:53:52 +0000 | [diff] [blame] | 4221 | if ((bound ^ vma->bound) & GLOBAL_BIND) { |
| 4222 | bool mappable, fenceable; |
| 4223 | u32 fence_size, fence_alignment; |
| 4224 | |
| 4225 | fence_size = i915_gem_get_gtt_size(obj->base.dev, |
| 4226 | obj->base.size, |
| 4227 | obj->tiling_mode); |
| 4228 | fence_alignment = i915_gem_get_gtt_alignment(obj->base.dev, |
| 4229 | obj->base.size, |
| 4230 | obj->tiling_mode, |
| 4231 | true); |
| 4232 | |
| 4233 | fenceable = (vma->node.size == fence_size && |
| 4234 | (vma->node.start & (fence_alignment - 1)) == 0); |
| 4235 | |
| 4236 | mappable = (vma->node.start + obj->base.size <= |
| 4237 | dev_priv->gtt.mappable_end); |
| 4238 | |
| 4239 | obj->map_and_fenceable = mappable && fenceable; |
| 4240 | } |
| 4241 | |
| 4242 | WARN_ON(flags & PIN_MAPPABLE && !obj->map_and_fenceable); |
| 4243 | |
Daniel Vetter | 8ea99c9 | 2014-02-14 14:01:21 +0100 | [diff] [blame] | 4244 | vma->pin_count++; |
Daniel Vetter | 1ec9e26 | 2014-02-14 14:01:11 +0100 | [diff] [blame] | 4245 | if (flags & PIN_MAPPABLE) |
| 4246 | obj->pin_mappable |= true; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4247 | |
| 4248 | return 0; |
| 4249 | } |
| 4250 | |
| 4251 | void |
Ben Widawsky | d7f46fc | 2013-12-06 14:10:55 -0800 | [diff] [blame] | 4252 | i915_gem_object_ggtt_unpin(struct drm_i915_gem_object *obj) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4253 | { |
Ben Widawsky | d7f46fc | 2013-12-06 14:10:55 -0800 | [diff] [blame] | 4254 | struct i915_vma *vma = i915_gem_obj_to_ggtt(obj); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4255 | |
Ben Widawsky | d7f46fc | 2013-12-06 14:10:55 -0800 | [diff] [blame] | 4256 | BUG_ON(!vma); |
| 4257 | BUG_ON(vma->pin_count == 0); |
| 4258 | BUG_ON(!i915_gem_obj_ggtt_bound(obj)); |
| 4259 | |
| 4260 | if (--vma->pin_count == 0) |
Chris Wilson | 6299f99 | 2010-11-24 12:23:44 +0000 | [diff] [blame] | 4261 | obj->pin_mappable = false; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4262 | } |
| 4263 | |
Daniel Vetter | d8ffa60 | 2014-05-13 12:11:26 +0200 | [diff] [blame] | 4264 | bool |
| 4265 | i915_gem_object_pin_fence(struct drm_i915_gem_object *obj) |
| 4266 | { |
| 4267 | if (obj->fence_reg != I915_FENCE_REG_NONE) { |
| 4268 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
| 4269 | struct i915_vma *ggtt_vma = i915_gem_obj_to_ggtt(obj); |
| 4270 | |
| 4271 | WARN_ON(!ggtt_vma || |
| 4272 | dev_priv->fence_regs[obj->fence_reg].pin_count > |
| 4273 | ggtt_vma->pin_count); |
| 4274 | dev_priv->fence_regs[obj->fence_reg].pin_count++; |
| 4275 | return true; |
| 4276 | } else |
| 4277 | return false; |
| 4278 | } |
| 4279 | |
| 4280 | void |
| 4281 | i915_gem_object_unpin_fence(struct drm_i915_gem_object *obj) |
| 4282 | { |
| 4283 | if (obj->fence_reg != I915_FENCE_REG_NONE) { |
| 4284 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
| 4285 | WARN_ON(dev_priv->fence_regs[obj->fence_reg].pin_count <= 0); |
| 4286 | dev_priv->fence_regs[obj->fence_reg].pin_count--; |
| 4287 | } |
| 4288 | } |
| 4289 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4290 | int |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4291 | i915_gem_busy_ioctl(struct drm_device *dev, void *data, |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4292 | struct drm_file *file) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4293 | { |
| 4294 | struct drm_i915_gem_busy *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4295 | struct drm_i915_gem_object *obj; |
Chris Wilson | 30dbf0c | 2010-09-25 10:19:17 +0100 | [diff] [blame] | 4296 | int ret; |
| 4297 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 4298 | ret = i915_mutex_lock_interruptible(dev); |
| 4299 | if (ret) |
| 4300 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4301 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4302 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
Chris Wilson | c872522 | 2011-02-19 11:31:06 +0000 | [diff] [blame] | 4303 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 4304 | ret = -ENOENT; |
| 4305 | goto unlock; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4306 | } |
Zou Nan hai | d1b851f | 2010-05-21 09:08:57 +0800 | [diff] [blame] | 4307 | |
Chris Wilson | 0be555b | 2010-08-04 15:36:30 +0100 | [diff] [blame] | 4308 | /* Count all active objects as busy, even if they are currently not used |
| 4309 | * by the gpu. Users of this interface expect objects to eventually |
| 4310 | * become non-busy without any further actions, therefore emit any |
| 4311 | * necessary flushes here. |
Eric Anholt | c4de0a5 | 2008-12-14 19:05:04 -0800 | [diff] [blame] | 4312 | */ |
Daniel Vetter | 30dfebf | 2012-06-01 15:21:23 +0200 | [diff] [blame] | 4313 | ret = i915_gem_object_flush_active(obj); |
| 4314 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4315 | args->busy = obj->active; |
John Harrison | 41c5241 | 2014-11-24 18:49:43 +0000 | [diff] [blame] | 4316 | if (obj->last_read_req) { |
| 4317 | struct intel_engine_cs *ring; |
Chris Wilson | e9808ed | 2012-07-04 12:25:08 +0100 | [diff] [blame] | 4318 | BUILD_BUG_ON(I915_NUM_RINGS > 16); |
John Harrison | 41c5241 | 2014-11-24 18:49:43 +0000 | [diff] [blame] | 4319 | ring = i915_gem_request_get_ring(obj->last_read_req); |
| 4320 | args->busy |= intel_ring_flag(ring) << 16; |
Chris Wilson | e9808ed | 2012-07-04 12:25:08 +0100 | [diff] [blame] | 4321 | } |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4322 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4323 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 4324 | unlock: |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4325 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 4326 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4327 | } |
| 4328 | |
| 4329 | int |
| 4330 | i915_gem_throttle_ioctl(struct drm_device *dev, void *data, |
| 4331 | struct drm_file *file_priv) |
| 4332 | { |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 4333 | return i915_gem_ring_throttle(dev, file_priv); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4334 | } |
| 4335 | |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 4336 | int |
| 4337 | i915_gem_madvise_ioctl(struct drm_device *dev, void *data, |
| 4338 | struct drm_file *file_priv) |
| 4339 | { |
Daniel Vetter | 656bfa3 | 2014-11-20 09:26:30 +0100 | [diff] [blame] | 4340 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 4341 | struct drm_i915_gem_madvise *args = data; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4342 | struct drm_i915_gem_object *obj; |
Chris Wilson | 76c1dec | 2010-09-25 11:22:51 +0100 | [diff] [blame] | 4343 | int ret; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 4344 | |
| 4345 | switch (args->madv) { |
| 4346 | case I915_MADV_DONTNEED: |
| 4347 | case I915_MADV_WILLNEED: |
| 4348 | break; |
| 4349 | default: |
| 4350 | return -EINVAL; |
| 4351 | } |
| 4352 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 4353 | ret = i915_mutex_lock_interruptible(dev); |
| 4354 | if (ret) |
| 4355 | return ret; |
| 4356 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4357 | 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] | 4358 | if (&obj->base == NULL) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 4359 | ret = -ENOENT; |
| 4360 | goto unlock; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 4361 | } |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 4362 | |
Ben Widawsky | d7f46fc | 2013-12-06 14:10:55 -0800 | [diff] [blame] | 4363 | if (i915_gem_obj_is_pinned(obj)) { |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 4364 | ret = -EINVAL; |
| 4365 | goto out; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 4366 | } |
| 4367 | |
Daniel Vetter | 656bfa3 | 2014-11-20 09:26:30 +0100 | [diff] [blame] | 4368 | if (obj->pages && |
| 4369 | obj->tiling_mode != I915_TILING_NONE && |
| 4370 | dev_priv->quirks & QUIRK_PIN_SWIZZLED_PAGES) { |
| 4371 | if (obj->madv == I915_MADV_WILLNEED) |
| 4372 | i915_gem_object_unpin_pages(obj); |
| 4373 | if (args->madv == I915_MADV_WILLNEED) |
| 4374 | i915_gem_object_pin_pages(obj); |
| 4375 | } |
| 4376 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4377 | if (obj->madv != __I915_MADV_PURGED) |
| 4378 | obj->madv = args->madv; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 4379 | |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 4380 | /* if the object is no longer attached, discard its backing storage */ |
| 4381 | if (i915_gem_object_is_purgeable(obj) && obj->pages == NULL) |
Chris Wilson | 2d7ef39 | 2009-09-20 23:13:10 +0100 | [diff] [blame] | 4382 | i915_gem_object_truncate(obj); |
| 4383 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4384 | args->retained = obj->madv != __I915_MADV_PURGED; |
Chris Wilson | bb6baf7 | 2009-09-22 14:24:13 +0100 | [diff] [blame] | 4385 | |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 4386 | out: |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4387 | drm_gem_object_unreference(&obj->base); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 4388 | unlock: |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 4389 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | 1d7cfea | 2010-10-17 09:45:41 +0100 | [diff] [blame] | 4390 | return ret; |
Chris Wilson | 3ef94da | 2009-09-14 16:50:29 +0100 | [diff] [blame] | 4391 | } |
| 4392 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 4393 | void i915_gem_object_init(struct drm_i915_gem_object *obj, |
| 4394 | const struct drm_i915_gem_object_ops *ops) |
Chris Wilson | 0327d6b | 2012-08-11 15:41:06 +0100 | [diff] [blame] | 4395 | { |
Ben Widawsky | 35c20a6 | 2013-05-31 11:28:48 -0700 | [diff] [blame] | 4396 | INIT_LIST_HEAD(&obj->global_list); |
Chris Wilson | 0327d6b | 2012-08-11 15:41:06 +0100 | [diff] [blame] | 4397 | INIT_LIST_HEAD(&obj->ring_list); |
Ben Widawsky | b25cb2f | 2013-08-14 11:38:33 +0200 | [diff] [blame] | 4398 | INIT_LIST_HEAD(&obj->obj_exec_link); |
Ben Widawsky | 2f63315 | 2013-07-17 12:19:03 -0700 | [diff] [blame] | 4399 | INIT_LIST_HEAD(&obj->vma_list); |
Brad Volkin | 493018d | 2014-12-11 12:13:08 -0800 | [diff] [blame] | 4400 | INIT_LIST_HEAD(&obj->batch_pool_list); |
Chris Wilson | 0327d6b | 2012-08-11 15:41:06 +0100 | [diff] [blame] | 4401 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 4402 | obj->ops = ops; |
| 4403 | |
Chris Wilson | 0327d6b | 2012-08-11 15:41:06 +0100 | [diff] [blame] | 4404 | obj->fence_reg = I915_FENCE_REG_NONE; |
| 4405 | obj->madv = I915_MADV_WILLNEED; |
Chris Wilson | 0327d6b | 2012-08-11 15:41:06 +0100 | [diff] [blame] | 4406 | |
| 4407 | i915_gem_info_add_obj(obj->base.dev->dev_private, obj->base.size); |
| 4408 | } |
| 4409 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 4410 | static const struct drm_i915_gem_object_ops i915_gem_object_ops = { |
| 4411 | .get_pages = i915_gem_object_get_pages_gtt, |
| 4412 | .put_pages = i915_gem_object_put_pages_gtt, |
| 4413 | }; |
| 4414 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4415 | struct drm_i915_gem_object *i915_gem_alloc_object(struct drm_device *dev, |
| 4416 | size_t size) |
Daniel Vetter | ac52bc5 | 2010-04-09 19:05:06 +0000 | [diff] [blame] | 4417 | { |
Daniel Vetter | c397b90 | 2010-04-09 19:05:07 +0000 | [diff] [blame] | 4418 | struct drm_i915_gem_object *obj; |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 4419 | struct address_space *mapping; |
Daniel Vetter | 1a240d4 | 2012-11-29 22:18:51 +0100 | [diff] [blame] | 4420 | gfp_t mask; |
Daniel Vetter | c397b90 | 2010-04-09 19:05:07 +0000 | [diff] [blame] | 4421 | |
Chris Wilson | 42dcedd | 2012-11-15 11:32:30 +0000 | [diff] [blame] | 4422 | obj = i915_gem_object_alloc(dev); |
Daniel Vetter | c397b90 | 2010-04-09 19:05:07 +0000 | [diff] [blame] | 4423 | if (obj == NULL) |
| 4424 | return NULL; |
| 4425 | |
| 4426 | if (drm_gem_object_init(dev, &obj->base, size) != 0) { |
Chris Wilson | 42dcedd | 2012-11-15 11:32:30 +0000 | [diff] [blame] | 4427 | i915_gem_object_free(obj); |
Daniel Vetter | c397b90 | 2010-04-09 19:05:07 +0000 | [diff] [blame] | 4428 | return NULL; |
| 4429 | } |
| 4430 | |
Chris Wilson | bed1ea9 | 2012-05-24 20:48:12 +0100 | [diff] [blame] | 4431 | mask = GFP_HIGHUSER | __GFP_RECLAIMABLE; |
| 4432 | if (IS_CRESTLINE(dev) || IS_BROADWATER(dev)) { |
| 4433 | /* 965gm cannot relocate objects above 4GiB. */ |
| 4434 | mask &= ~__GFP_HIGHMEM; |
| 4435 | mask |= __GFP_DMA32; |
| 4436 | } |
| 4437 | |
Al Viro | 496ad9a | 2013-01-23 17:07:38 -0500 | [diff] [blame] | 4438 | mapping = file_inode(obj->base.filp)->i_mapping; |
Chris Wilson | bed1ea9 | 2012-05-24 20:48:12 +0100 | [diff] [blame] | 4439 | mapping_set_gfp_mask(mapping, mask); |
Hugh Dickins | 5949eac | 2011-06-27 16:18:18 -0700 | [diff] [blame] | 4440 | |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 4441 | i915_gem_object_init(obj, &i915_gem_object_ops); |
Chris Wilson | 73aa808 | 2010-09-30 11:46:12 +0100 | [diff] [blame] | 4442 | |
Daniel Vetter | c397b90 | 2010-04-09 19:05:07 +0000 | [diff] [blame] | 4443 | obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
| 4444 | obj->base.read_domains = I915_GEM_DOMAIN_CPU; |
| 4445 | |
Eugeni Dodonov | 3d29b84 | 2012-01-17 14:43:53 -0200 | [diff] [blame] | 4446 | if (HAS_LLC(dev)) { |
| 4447 | /* 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] | 4448 | * cache) for about a 10% performance improvement |
| 4449 | * compared to uncached. Graphics requests other than |
| 4450 | * display scanout are coherent with the CPU in |
| 4451 | * accessing this cache. This means in this mode we |
| 4452 | * don't need to clflush on the CPU side, and on the |
| 4453 | * GPU side we only need to flush internal caches to |
| 4454 | * get data visible to the CPU. |
| 4455 | * |
| 4456 | * However, we maintain the display planes as UC, and so |
| 4457 | * need to rebind when first used as such. |
| 4458 | */ |
| 4459 | obj->cache_level = I915_CACHE_LLC; |
| 4460 | } else |
| 4461 | obj->cache_level = I915_CACHE_NONE; |
| 4462 | |
Daniel Vetter | d861e33 | 2013-07-24 23:25:03 +0200 | [diff] [blame] | 4463 | trace_i915_gem_object_create(obj); |
| 4464 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4465 | return obj; |
Daniel Vetter | ac52bc5 | 2010-04-09 19:05:06 +0000 | [diff] [blame] | 4466 | } |
| 4467 | |
Chris Wilson | 340fbd8 | 2014-05-22 09:16:52 +0100 | [diff] [blame] | 4468 | static bool discard_backing_storage(struct drm_i915_gem_object *obj) |
| 4469 | { |
| 4470 | /* If we are the last user of the backing storage (be it shmemfs |
| 4471 | * pages or stolen etc), we know that the pages are going to be |
| 4472 | * immediately released. In this case, we can then skip copying |
| 4473 | * back the contents from the GPU. |
| 4474 | */ |
| 4475 | |
| 4476 | if (obj->madv != I915_MADV_WILLNEED) |
| 4477 | return false; |
| 4478 | |
| 4479 | if (obj->base.filp == NULL) |
| 4480 | return true; |
| 4481 | |
| 4482 | /* At first glance, this looks racy, but then again so would be |
| 4483 | * userspace racing mmap against close. However, the first external |
| 4484 | * reference to the filp can only be obtained through the |
| 4485 | * i915_gem_mmap_ioctl() which safeguards us against the user |
| 4486 | * acquiring such a reference whilst we are in the middle of |
| 4487 | * freeing the object. |
| 4488 | */ |
| 4489 | return atomic_long_read(&obj->base.filp->f_count) == 1; |
| 4490 | } |
| 4491 | |
Chris Wilson | 1488fc0 | 2012-04-24 15:47:31 +0100 | [diff] [blame] | 4492 | void i915_gem_free_object(struct drm_gem_object *gem_obj) |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 4493 | { |
Chris Wilson | 1488fc0 | 2012-04-24 15:47:31 +0100 | [diff] [blame] | 4494 | struct drm_i915_gem_object *obj = to_intel_bo(gem_obj); |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4495 | struct drm_device *dev = obj->base.dev; |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 4496 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 4497 | struct i915_vma *vma, *next; |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 4498 | |
Paulo Zanoni | f65c916 | 2013-11-27 18:20:34 -0200 | [diff] [blame] | 4499 | intel_runtime_pm_get(dev_priv); |
| 4500 | |
Chris Wilson | 26e12f8 | 2011-03-20 11:20:19 +0000 | [diff] [blame] | 4501 | trace_i915_gem_object_destroy(obj); |
| 4502 | |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 4503 | list_for_each_entry_safe(vma, next, &obj->vma_list, vma_link) { |
Ben Widawsky | d7f46fc | 2013-12-06 14:10:55 -0800 | [diff] [blame] | 4504 | int ret; |
| 4505 | |
| 4506 | vma->pin_count = 0; |
| 4507 | ret = i915_vma_unbind(vma); |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 4508 | if (WARN_ON(ret == -ERESTARTSYS)) { |
| 4509 | bool was_interruptible; |
Chris Wilson | 1488fc0 | 2012-04-24 15:47:31 +0100 | [diff] [blame] | 4510 | |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 4511 | was_interruptible = dev_priv->mm.interruptible; |
| 4512 | dev_priv->mm.interruptible = false; |
Chris Wilson | 1488fc0 | 2012-04-24 15:47:31 +0100 | [diff] [blame] | 4513 | |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 4514 | WARN_ON(i915_vma_unbind(vma)); |
Chris Wilson | 1488fc0 | 2012-04-24 15:47:31 +0100 | [diff] [blame] | 4515 | |
Ben Widawsky | 07fe0b1 | 2013-07-31 17:00:10 -0700 | [diff] [blame] | 4516 | dev_priv->mm.interruptible = was_interruptible; |
| 4517 | } |
Chris Wilson | 1488fc0 | 2012-04-24 15:47:31 +0100 | [diff] [blame] | 4518 | } |
| 4519 | |
Ben Widawsky | 1d64ae7 | 2013-05-31 14:46:20 -0700 | [diff] [blame] | 4520 | /* Stolen objects don't hold a ref, but do hold pin count. Fix that up |
| 4521 | * before progressing. */ |
| 4522 | if (obj->stolen) |
| 4523 | i915_gem_object_unpin_pages(obj); |
| 4524 | |
Daniel Vetter | a071fa0 | 2014-06-18 23:28:09 +0200 | [diff] [blame] | 4525 | WARN_ON(obj->frontbuffer_bits); |
| 4526 | |
Daniel Vetter | 656bfa3 | 2014-11-20 09:26:30 +0100 | [diff] [blame] | 4527 | if (obj->pages && obj->madv == I915_MADV_WILLNEED && |
| 4528 | dev_priv->quirks & QUIRK_PIN_SWIZZLED_PAGES && |
| 4529 | obj->tiling_mode != I915_TILING_NONE) |
| 4530 | i915_gem_object_unpin_pages(obj); |
| 4531 | |
Ben Widawsky | 401c29f | 2013-05-31 11:28:47 -0700 | [diff] [blame] | 4532 | if (WARN_ON(obj->pages_pin_count)) |
| 4533 | obj->pages_pin_count = 0; |
Chris Wilson | 340fbd8 | 2014-05-22 09:16:52 +0100 | [diff] [blame] | 4534 | if (discard_backing_storage(obj)) |
Chris Wilson | 5537252 | 2014-03-25 13:23:06 +0000 | [diff] [blame] | 4535 | obj->madv = I915_MADV_DONTNEED; |
Chris Wilson | 37e680a | 2012-06-07 15:38:42 +0100 | [diff] [blame] | 4536 | i915_gem_object_put_pages(obj); |
Chris Wilson | d8cb508 | 2012-08-11 15:41:03 +0100 | [diff] [blame] | 4537 | i915_gem_object_free_mmap_offset(obj); |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 4538 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 4539 | BUG_ON(obj->pages); |
| 4540 | |
Chris Wilson | 2f745ad | 2012-09-04 21:02:58 +0100 | [diff] [blame] | 4541 | if (obj->base.import_attach) |
| 4542 | drm_prime_gem_destroy(&obj->base, NULL); |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 4543 | |
Chris Wilson | 5cc9ed4 | 2014-05-16 14:22:37 +0100 | [diff] [blame] | 4544 | if (obj->ops->release) |
| 4545 | obj->ops->release(obj); |
| 4546 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4547 | drm_gem_object_release(&obj->base); |
| 4548 | i915_gem_info_remove_obj(dev_priv, obj->base.size); |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 4549 | |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 4550 | kfree(obj->bit_17); |
Chris Wilson | 42dcedd | 2012-11-15 11:32:30 +0000 | [diff] [blame] | 4551 | i915_gem_object_free(obj); |
Paulo Zanoni | f65c916 | 2013-11-27 18:20:34 -0200 | [diff] [blame] | 4552 | |
| 4553 | intel_runtime_pm_put(dev_priv); |
Chris Wilson | be72615 | 2010-07-23 23:18:50 +0100 | [diff] [blame] | 4554 | } |
| 4555 | |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 4556 | struct i915_vma *i915_gem_obj_to_vma_view(struct drm_i915_gem_object *obj, |
| 4557 | struct i915_address_space *vm, |
| 4558 | const struct i915_ggtt_view *view) |
Ben Widawsky | 2f63315 | 2013-07-17 12:19:03 -0700 | [diff] [blame] | 4559 | { |
Daniel Vetter | e656a6c | 2013-08-14 14:14:04 +0200 | [diff] [blame] | 4560 | struct i915_vma *vma; |
| 4561 | list_for_each_entry(vma, &obj->vma_list, vma_link) |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 4562 | if (vma->vm == vm && vma->ggtt_view.type == view->type) |
Daniel Vetter | e656a6c | 2013-08-14 14:14:04 +0200 | [diff] [blame] | 4563 | return vma; |
| 4564 | |
| 4565 | return NULL; |
| 4566 | } |
| 4567 | |
Ben Widawsky | 2f63315 | 2013-07-17 12:19:03 -0700 | [diff] [blame] | 4568 | void i915_gem_vma_destroy(struct i915_vma *vma) |
| 4569 | { |
Michel Thierry | b9d06dd | 2014-08-06 15:04:44 +0200 | [diff] [blame] | 4570 | struct i915_address_space *vm = NULL; |
Ben Widawsky | 2f63315 | 2013-07-17 12:19:03 -0700 | [diff] [blame] | 4571 | WARN_ON(vma->node.allocated); |
Chris Wilson | aaa0566 | 2013-08-20 12:56:40 +0100 | [diff] [blame] | 4572 | |
| 4573 | /* Keep the vma as a placeholder in the execbuffer reservation lists */ |
| 4574 | if (!list_empty(&vma->exec_list)) |
| 4575 | return; |
| 4576 | |
Michel Thierry | b9d06dd | 2014-08-06 15:04:44 +0200 | [diff] [blame] | 4577 | vm = vma->vm; |
Michel Thierry | b9d06dd | 2014-08-06 15:04:44 +0200 | [diff] [blame] | 4578 | |
Daniel Vetter | 841cd77 | 2014-08-06 15:04:48 +0200 | [diff] [blame] | 4579 | if (!i915_is_ggtt(vm)) |
| 4580 | i915_ppgtt_put(i915_vm_to_ppgtt(vm)); |
Michel Thierry | b9d06dd | 2014-08-06 15:04:44 +0200 | [diff] [blame] | 4581 | |
Ben Widawsky | 8b9c2b9 | 2013-07-31 17:00:16 -0700 | [diff] [blame] | 4582 | list_del(&vma->vma_link); |
Daniel Vetter | b93dab6 | 2013-08-26 11:23:47 +0200 | [diff] [blame] | 4583 | |
Ben Widawsky | 2f63315 | 2013-07-17 12:19:03 -0700 | [diff] [blame] | 4584 | kfree(vma); |
| 4585 | } |
| 4586 | |
Chris Wilson | e3efda4 | 2014-04-09 09:19:41 +0100 | [diff] [blame] | 4587 | static void |
| 4588 | i915_gem_stop_ringbuffers(struct drm_device *dev) |
| 4589 | { |
| 4590 | struct drm_i915_private *dev_priv = dev->dev_private; |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 4591 | struct intel_engine_cs *ring; |
Chris Wilson | e3efda4 | 2014-04-09 09:19:41 +0100 | [diff] [blame] | 4592 | int i; |
| 4593 | |
| 4594 | for_each_ring(ring, dev_priv, i) |
Oscar Mateo | a83014d | 2014-07-24 17:04:21 +0100 | [diff] [blame] | 4595 | dev_priv->gt.stop_ring(ring); |
Chris Wilson | e3efda4 | 2014-04-09 09:19:41 +0100 | [diff] [blame] | 4596 | } |
| 4597 | |
Jesse Barnes | 5669fca | 2009-02-17 15:13:31 -0800 | [diff] [blame] | 4598 | int |
Chris Wilson | 45c5f20 | 2013-10-16 11:50:01 +0100 | [diff] [blame] | 4599 | i915_gem_suspend(struct drm_device *dev) |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4600 | { |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 4601 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 45c5f20 | 2013-10-16 11:50:01 +0100 | [diff] [blame] | 4602 | int ret = 0; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4603 | |
Chris Wilson | 45c5f20 | 2013-10-16 11:50:01 +0100 | [diff] [blame] | 4604 | mutex_lock(&dev->struct_mutex); |
Ben Widawsky | b2da9fe | 2012-04-26 16:02:58 -0700 | [diff] [blame] | 4605 | ret = i915_gpu_idle(dev); |
Chris Wilson | f740334 | 2013-09-13 23:57:04 +0100 | [diff] [blame] | 4606 | if (ret) |
Chris Wilson | 45c5f20 | 2013-10-16 11:50:01 +0100 | [diff] [blame] | 4607 | goto err; |
Chris Wilson | f740334 | 2013-09-13 23:57:04 +0100 | [diff] [blame] | 4608 | |
Ben Widawsky | b2da9fe | 2012-04-26 16:02:58 -0700 | [diff] [blame] | 4609 | i915_gem_retire_requests(dev); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4610 | |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 4611 | /* Under UMS, be paranoid and evict. */ |
Chris Wilson | a39d7ef | 2012-04-24 18:22:52 +0100 | [diff] [blame] | 4612 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 4613 | i915_gem_evict_everything(dev); |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 4614 | |
Chris Wilson | e3efda4 | 2014-04-09 09:19:41 +0100 | [diff] [blame] | 4615 | i915_gem_stop_ringbuffers(dev); |
Chris Wilson | 45c5f20 | 2013-10-16 11:50:01 +0100 | [diff] [blame] | 4616 | mutex_unlock(&dev->struct_mutex); |
| 4617 | |
Chris Wilson | 737b150 | 2015-01-26 18:03:03 +0200 | [diff] [blame] | 4618 | cancel_delayed_work_sync(&dev_priv->gpu_error.hangcheck_work); |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 4619 | cancel_delayed_work_sync(&dev_priv->mm.retire_work); |
Deepak S | 274fa1c | 2014-08-05 07:51:20 -0700 | [diff] [blame] | 4620 | flush_delayed_work(&dev_priv->mm.idle_work); |
Chris Wilson | 29105cc | 2010-01-07 10:39:13 +0000 | [diff] [blame] | 4621 | |
Chris Wilson | bdcf120 | 2014-11-25 11:56:33 +0000 | [diff] [blame] | 4622 | /* Assert that we sucessfully flushed all the work and |
| 4623 | * reset the GPU back to its idle, low power state. |
| 4624 | */ |
| 4625 | WARN_ON(dev_priv->mm.busy); |
| 4626 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4627 | return 0; |
Chris Wilson | 45c5f20 | 2013-10-16 11:50:01 +0100 | [diff] [blame] | 4628 | |
| 4629 | err: |
| 4630 | mutex_unlock(&dev->struct_mutex); |
| 4631 | return ret; |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4632 | } |
| 4633 | |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 4634 | int i915_gem_l3_remap(struct intel_engine_cs *ring, int slice) |
Ben Widawsky | b9524a1 | 2012-05-25 16:56:24 -0700 | [diff] [blame] | 4635 | { |
Ben Widawsky | c3787e2 | 2013-09-17 21:12:44 -0700 | [diff] [blame] | 4636 | struct drm_device *dev = ring->dev; |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 4637 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ben Widawsky | 35a85ac | 2013-09-19 11:13:41 -0700 | [diff] [blame] | 4638 | u32 reg_base = GEN7_L3LOG_BASE + (slice * 0x200); |
| 4639 | u32 *remap_info = dev_priv->l3_parity.remap_info[slice]; |
Ben Widawsky | c3787e2 | 2013-09-17 21:12:44 -0700 | [diff] [blame] | 4640 | int i, ret; |
Ben Widawsky | b9524a1 | 2012-05-25 16:56:24 -0700 | [diff] [blame] | 4641 | |
Ben Widawsky | 040d2ba | 2013-09-19 11:01:40 -0700 | [diff] [blame] | 4642 | if (!HAS_L3_DPF(dev) || !remap_info) |
Ben Widawsky | c3787e2 | 2013-09-17 21:12:44 -0700 | [diff] [blame] | 4643 | return 0; |
Ben Widawsky | b9524a1 | 2012-05-25 16:56:24 -0700 | [diff] [blame] | 4644 | |
Ben Widawsky | c3787e2 | 2013-09-17 21:12:44 -0700 | [diff] [blame] | 4645 | ret = intel_ring_begin(ring, GEN7_L3LOG_SIZE / 4 * 3); |
| 4646 | if (ret) |
| 4647 | return ret; |
Ben Widawsky | b9524a1 | 2012-05-25 16:56:24 -0700 | [diff] [blame] | 4648 | |
Ben Widawsky | c3787e2 | 2013-09-17 21:12:44 -0700 | [diff] [blame] | 4649 | /* |
| 4650 | * Note: We do not worry about the concurrent register cacheline hang |
| 4651 | * here because no other code should access these registers other than |
| 4652 | * at initialization time. |
| 4653 | */ |
Ben Widawsky | b9524a1 | 2012-05-25 16:56:24 -0700 | [diff] [blame] | 4654 | for (i = 0; i < GEN7_L3LOG_SIZE; i += 4) { |
Ben Widawsky | c3787e2 | 2013-09-17 21:12:44 -0700 | [diff] [blame] | 4655 | intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1)); |
| 4656 | intel_ring_emit(ring, reg_base + i); |
| 4657 | intel_ring_emit(ring, remap_info[i/4]); |
Ben Widawsky | b9524a1 | 2012-05-25 16:56:24 -0700 | [diff] [blame] | 4658 | } |
| 4659 | |
Ben Widawsky | c3787e2 | 2013-09-17 21:12:44 -0700 | [diff] [blame] | 4660 | intel_ring_advance(ring); |
Ben Widawsky | b9524a1 | 2012-05-25 16:56:24 -0700 | [diff] [blame] | 4661 | |
Ben Widawsky | c3787e2 | 2013-09-17 21:12:44 -0700 | [diff] [blame] | 4662 | return ret; |
Ben Widawsky | b9524a1 | 2012-05-25 16:56:24 -0700 | [diff] [blame] | 4663 | } |
| 4664 | |
Daniel Vetter | f691e2f | 2012-02-02 09:58:12 +0100 | [diff] [blame] | 4665 | void i915_gem_init_swizzling(struct drm_device *dev) |
| 4666 | { |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 4667 | struct drm_i915_private *dev_priv = dev->dev_private; |
Daniel Vetter | f691e2f | 2012-02-02 09:58:12 +0100 | [diff] [blame] | 4668 | |
Daniel Vetter | 11782b0 | 2012-01-31 16:47:55 +0100 | [diff] [blame] | 4669 | if (INTEL_INFO(dev)->gen < 5 || |
Daniel Vetter | f691e2f | 2012-02-02 09:58:12 +0100 | [diff] [blame] | 4670 | dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_NONE) |
| 4671 | return; |
| 4672 | |
| 4673 | I915_WRITE(DISP_ARB_CTL, I915_READ(DISP_ARB_CTL) | |
| 4674 | DISP_TILE_SURFACE_SWIZZLING); |
| 4675 | |
Daniel Vetter | 11782b0 | 2012-01-31 16:47:55 +0100 | [diff] [blame] | 4676 | if (IS_GEN5(dev)) |
| 4677 | return; |
| 4678 | |
Daniel Vetter | f691e2f | 2012-02-02 09:58:12 +0100 | [diff] [blame] | 4679 | I915_WRITE(TILECTL, I915_READ(TILECTL) | TILECTL_SWZCTL); |
| 4680 | if (IS_GEN6(dev)) |
Daniel Vetter | 6b26c86 | 2012-04-24 14:04:12 +0200 | [diff] [blame] | 4681 | I915_WRITE(ARB_MODE, _MASKED_BIT_ENABLE(ARB_MODE_SWIZZLE_SNB)); |
Ben Widawsky | 8782e26 | 2012-12-18 10:31:23 -0800 | [diff] [blame] | 4682 | else if (IS_GEN7(dev)) |
Daniel Vetter | 6b26c86 | 2012-04-24 14:04:12 +0200 | [diff] [blame] | 4683 | I915_WRITE(ARB_MODE, _MASKED_BIT_ENABLE(ARB_MODE_SWIZZLE_IVB)); |
Ben Widawsky | 31a5336 | 2013-11-02 21:07:04 -0700 | [diff] [blame] | 4684 | else if (IS_GEN8(dev)) |
| 4685 | I915_WRITE(GAMTARBMODE, _MASKED_BIT_ENABLE(ARB_MODE_SWIZZLE_BDW)); |
Ben Widawsky | 8782e26 | 2012-12-18 10:31:23 -0800 | [diff] [blame] | 4686 | else |
| 4687 | BUG(); |
Daniel Vetter | f691e2f | 2012-02-02 09:58:12 +0100 | [diff] [blame] | 4688 | } |
Daniel Vetter | e21af88 | 2012-02-09 20:53:27 +0100 | [diff] [blame] | 4689 | |
Chris Wilson | 67b1b57 | 2012-07-05 23:49:40 +0100 | [diff] [blame] | 4690 | static bool |
| 4691 | intel_enable_blt(struct drm_device *dev) |
| 4692 | { |
| 4693 | if (!HAS_BLT(dev)) |
| 4694 | return false; |
| 4695 | |
| 4696 | /* The blitter was dysfunctional on early prototypes */ |
| 4697 | if (IS_GEN6(dev) && dev->pdev->revision < 8) { |
| 4698 | DRM_INFO("BLT not supported on this pre-production hardware;" |
| 4699 | " graphics performance will be degraded.\n"); |
| 4700 | return false; |
| 4701 | } |
| 4702 | |
| 4703 | return true; |
| 4704 | } |
| 4705 | |
Ville Syrjälä | 81e7f20 | 2014-08-15 01:21:55 +0300 | [diff] [blame] | 4706 | static void init_unused_ring(struct drm_device *dev, u32 base) |
| 4707 | { |
| 4708 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 4709 | |
| 4710 | I915_WRITE(RING_CTL(base), 0); |
| 4711 | I915_WRITE(RING_HEAD(base), 0); |
| 4712 | I915_WRITE(RING_TAIL(base), 0); |
| 4713 | I915_WRITE(RING_START(base), 0); |
| 4714 | } |
| 4715 | |
| 4716 | static void init_unused_rings(struct drm_device *dev) |
| 4717 | { |
| 4718 | if (IS_I830(dev)) { |
| 4719 | init_unused_ring(dev, PRB1_BASE); |
| 4720 | init_unused_ring(dev, SRB0_BASE); |
| 4721 | init_unused_ring(dev, SRB1_BASE); |
| 4722 | init_unused_ring(dev, SRB2_BASE); |
| 4723 | init_unused_ring(dev, SRB3_BASE); |
| 4724 | } else if (IS_GEN2(dev)) { |
| 4725 | init_unused_ring(dev, SRB0_BASE); |
| 4726 | init_unused_ring(dev, SRB1_BASE); |
| 4727 | } else if (IS_GEN3(dev)) { |
| 4728 | init_unused_ring(dev, PRB1_BASE); |
| 4729 | init_unused_ring(dev, PRB2_BASE); |
| 4730 | } |
| 4731 | } |
| 4732 | |
Oscar Mateo | a83014d | 2014-07-24 17:04:21 +0100 | [diff] [blame] | 4733 | int i915_gem_init_rings(struct drm_device *dev) |
Zou Nan hai | 8187a2b | 2010-05-21 09:08:55 +0800 | [diff] [blame] | 4734 | { |
Ben Widawsky | 4fc7c97 | 2013-02-08 11:49:24 -0800 | [diff] [blame] | 4735 | struct drm_i915_private *dev_priv = dev->dev_private; |
Zou Nan hai | 8187a2b | 2010-05-21 09:08:55 +0800 | [diff] [blame] | 4736 | int ret; |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 4737 | |
Xiang, Haihao | 5c1143b | 2010-09-16 10:43:11 +0800 | [diff] [blame] | 4738 | ret = intel_init_render_ring_buffer(dev); |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 4739 | if (ret) |
Chris Wilson | b6913e4 | 2010-11-12 10:46:37 +0000 | [diff] [blame] | 4740 | return ret; |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 4741 | |
| 4742 | if (HAS_BSD(dev)) { |
Xiang, Haihao | 5c1143b | 2010-09-16 10:43:11 +0800 | [diff] [blame] | 4743 | ret = intel_init_bsd_ring_buffer(dev); |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 4744 | if (ret) |
| 4745 | goto cleanup_render_ring; |
Zou Nan hai | d1b851f | 2010-05-21 09:08:57 +0800 | [diff] [blame] | 4746 | } |
Chris Wilson | 68f95ba | 2010-05-27 13:18:22 +0100 | [diff] [blame] | 4747 | |
Chris Wilson | 67b1b57 | 2012-07-05 23:49:40 +0100 | [diff] [blame] | 4748 | if (intel_enable_blt(dev)) { |
Chris Wilson | 549f736 | 2010-10-19 11:19:32 +0100 | [diff] [blame] | 4749 | ret = intel_init_blt_ring_buffer(dev); |
| 4750 | if (ret) |
| 4751 | goto cleanup_bsd_ring; |
| 4752 | } |
| 4753 | |
Ben Widawsky | 9a8a221 | 2013-05-28 19:22:23 -0700 | [diff] [blame] | 4754 | if (HAS_VEBOX(dev)) { |
| 4755 | ret = intel_init_vebox_ring_buffer(dev); |
| 4756 | if (ret) |
| 4757 | goto cleanup_blt_ring; |
| 4758 | } |
| 4759 | |
Zhao Yakui | 845f74a | 2014-04-17 10:37:37 +0800 | [diff] [blame] | 4760 | if (HAS_BSD2(dev)) { |
| 4761 | ret = intel_init_bsd2_ring_buffer(dev); |
| 4762 | if (ret) |
| 4763 | goto cleanup_vebox_ring; |
| 4764 | } |
Ben Widawsky | 9a8a221 | 2013-05-28 19:22:23 -0700 | [diff] [blame] | 4765 | |
Mika Kuoppala | 9943393 | 2013-01-22 14:12:17 +0200 | [diff] [blame] | 4766 | ret = i915_gem_set_seqno(dev, ((u32)~0 - 0x1000)); |
| 4767 | if (ret) |
Zhao Yakui | 845f74a | 2014-04-17 10:37:37 +0800 | [diff] [blame] | 4768 | goto cleanup_bsd2_ring; |
Ben Widawsky | 4fc7c97 | 2013-02-08 11:49:24 -0800 | [diff] [blame] | 4769 | |
| 4770 | return 0; |
| 4771 | |
Zhao Yakui | 845f74a | 2014-04-17 10:37:37 +0800 | [diff] [blame] | 4772 | cleanup_bsd2_ring: |
| 4773 | intel_cleanup_ring_buffer(&dev_priv->ring[VCS2]); |
Ben Widawsky | 9a8a221 | 2013-05-28 19:22:23 -0700 | [diff] [blame] | 4774 | cleanup_vebox_ring: |
| 4775 | intel_cleanup_ring_buffer(&dev_priv->ring[VECS]); |
Ben Widawsky | 4fc7c97 | 2013-02-08 11:49:24 -0800 | [diff] [blame] | 4776 | cleanup_blt_ring: |
| 4777 | intel_cleanup_ring_buffer(&dev_priv->ring[BCS]); |
| 4778 | cleanup_bsd_ring: |
| 4779 | intel_cleanup_ring_buffer(&dev_priv->ring[VCS]); |
| 4780 | cleanup_render_ring: |
| 4781 | intel_cleanup_ring_buffer(&dev_priv->ring[RCS]); |
| 4782 | |
| 4783 | return ret; |
| 4784 | } |
| 4785 | |
| 4786 | int |
| 4787 | i915_gem_init_hw(struct drm_device *dev) |
| 4788 | { |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 4789 | struct drm_i915_private *dev_priv = dev->dev_private; |
Daniel Vetter | 35a57ff | 2014-11-20 00:33:07 +0100 | [diff] [blame] | 4790 | struct intel_engine_cs *ring; |
Ben Widawsky | 35a85ac | 2013-09-19 11:13:41 -0700 | [diff] [blame] | 4791 | int ret, i; |
Ben Widawsky | 4fc7c97 | 2013-02-08 11:49:24 -0800 | [diff] [blame] | 4792 | |
| 4793 | if (INTEL_INFO(dev)->gen < 6 && !intel_enable_gtt()) |
| 4794 | return -EIO; |
| 4795 | |
Chris Wilson | 5e4f518 | 2015-02-13 14:35:59 +0000 | [diff] [blame] | 4796 | /* Double layer security blanket, see i915_gem_init() */ |
| 4797 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
| 4798 | |
Ben Widawsky | 5912450 | 2013-07-04 11:02:05 -0700 | [diff] [blame] | 4799 | if (dev_priv->ellc_size) |
Ben Widawsky | 05e21cc | 2013-07-04 11:02:04 -0700 | [diff] [blame] | 4800 | I915_WRITE(HSW_IDICR, I915_READ(HSW_IDICR) | IDIHASHMSK(0xf)); |
Ben Widawsky | 4fc7c97 | 2013-02-08 11:49:24 -0800 | [diff] [blame] | 4801 | |
Ville Syrjälä | 0bf2134 | 2013-11-29 14:56:12 +0200 | [diff] [blame] | 4802 | if (IS_HASWELL(dev)) |
| 4803 | I915_WRITE(MI_PREDICATE_RESULT_2, IS_HSW_GT3(dev) ? |
| 4804 | LOWER_SLICE_ENABLED : LOWER_SLICE_DISABLED); |
Rodrigo Vivi | 9435373 | 2013-08-28 16:45:46 -0300 | [diff] [blame] | 4805 | |
Ben Widawsky | 88a2b2a | 2013-04-05 13:12:43 -0700 | [diff] [blame] | 4806 | if (HAS_PCH_NOP(dev)) { |
Daniel Vetter | 6ba844b | 2014-01-22 23:39:30 +0100 | [diff] [blame] | 4807 | if (IS_IVYBRIDGE(dev)) { |
| 4808 | u32 temp = I915_READ(GEN7_MSG_CTL); |
| 4809 | temp &= ~(WAIT_FOR_PCH_FLR_ACK | WAIT_FOR_PCH_RESET_ACK); |
| 4810 | I915_WRITE(GEN7_MSG_CTL, temp); |
| 4811 | } else if (INTEL_INFO(dev)->gen >= 7) { |
| 4812 | u32 temp = I915_READ(HSW_NDE_RSTWRN_OPT); |
| 4813 | temp &= ~RESET_PCH_HANDSHAKE_ENABLE; |
| 4814 | I915_WRITE(HSW_NDE_RSTWRN_OPT, temp); |
| 4815 | } |
Ben Widawsky | 88a2b2a | 2013-04-05 13:12:43 -0700 | [diff] [blame] | 4816 | } |
| 4817 | |
Ben Widawsky | 4fc7c97 | 2013-02-08 11:49:24 -0800 | [diff] [blame] | 4818 | i915_gem_init_swizzling(dev); |
| 4819 | |
Daniel Vetter | d5abdfd | 2014-11-20 09:45:19 +0100 | [diff] [blame] | 4820 | /* |
| 4821 | * At least 830 can leave some of the unused rings |
| 4822 | * "active" (ie. head != tail) after resume which |
| 4823 | * will prevent c3 entry. Makes sure all unused rings |
| 4824 | * are totally idle. |
| 4825 | */ |
| 4826 | init_unused_rings(dev); |
| 4827 | |
Daniel Vetter | 35a57ff | 2014-11-20 00:33:07 +0100 | [diff] [blame] | 4828 | for_each_ring(ring, dev_priv, i) { |
| 4829 | ret = ring->init_hw(ring); |
| 4830 | if (ret) |
Chris Wilson | 5e4f518 | 2015-02-13 14:35:59 +0000 | [diff] [blame] | 4831 | goto out; |
Daniel Vetter | 35a57ff | 2014-11-20 00:33:07 +0100 | [diff] [blame] | 4832 | } |
Mika Kuoppala | 9943393 | 2013-01-22 14:12:17 +0200 | [diff] [blame] | 4833 | |
Ben Widawsky | c3787e2 | 2013-09-17 21:12:44 -0700 | [diff] [blame] | 4834 | for (i = 0; i < NUM_L3_SLICES(dev); i++) |
| 4835 | i915_gem_l3_remap(&dev_priv->ring[RCS], i); |
| 4836 | |
David Woodhouse | f48a016 | 2015-01-20 17:21:42 +0000 | [diff] [blame] | 4837 | ret = i915_ppgtt_init_hw(dev); |
| 4838 | if (ret && ret != -EIO) { |
| 4839 | DRM_ERROR("PPGTT enable failed %d\n", ret); |
| 4840 | i915_gem_cleanup_ringbuffer(dev); |
| 4841 | } |
| 4842 | |
Ben Widawsky | 2fa48d8 | 2013-12-06 14:11:04 -0800 | [diff] [blame] | 4843 | ret = i915_gem_context_enable(dev_priv); |
Chris Wilson | 6099032 | 2014-04-09 09:19:42 +0100 | [diff] [blame] | 4844 | if (ret && ret != -EIO) { |
Ben Widawsky | 2fa48d8 | 2013-12-06 14:11:04 -0800 | [diff] [blame] | 4845 | DRM_ERROR("Context enable failed %d\n", ret); |
Chris Wilson | 6099032 | 2014-04-09 09:19:42 +0100 | [diff] [blame] | 4846 | i915_gem_cleanup_ringbuffer(dev); |
Daniel Vetter | 82460d9 | 2014-08-06 20:19:53 +0200 | [diff] [blame] | 4847 | |
Chris Wilson | 5e4f518 | 2015-02-13 14:35:59 +0000 | [diff] [blame] | 4848 | goto out; |
Daniel Vetter | 82460d9 | 2014-08-06 20:19:53 +0200 | [diff] [blame] | 4849 | } |
| 4850 | |
Chris Wilson | 5e4f518 | 2015-02-13 14:35:59 +0000 | [diff] [blame] | 4851 | out: |
| 4852 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
Ben Widawsky | 2fa48d8 | 2013-12-06 14:11:04 -0800 | [diff] [blame] | 4853 | return ret; |
Zou Nan hai | 8187a2b | 2010-05-21 09:08:55 +0800 | [diff] [blame] | 4854 | } |
| 4855 | |
Chris Wilson | 1070a42 | 2012-04-24 15:47:41 +0100 | [diff] [blame] | 4856 | int i915_gem_init(struct drm_device *dev) |
| 4857 | { |
| 4858 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 1070a42 | 2012-04-24 15:47:41 +0100 | [diff] [blame] | 4859 | int ret; |
| 4860 | |
Oscar Mateo | 127f100 | 2014-07-24 17:04:11 +0100 | [diff] [blame] | 4861 | i915.enable_execlists = intel_sanitize_enable_execlists(dev, |
| 4862 | i915.enable_execlists); |
| 4863 | |
Chris Wilson | 1070a42 | 2012-04-24 15:47:41 +0100 | [diff] [blame] | 4864 | mutex_lock(&dev->struct_mutex); |
Jesse Barnes | d62b489 | 2013-03-08 10:45:53 -0800 | [diff] [blame] | 4865 | |
| 4866 | if (IS_VALLEYVIEW(dev)) { |
| 4867 | /* VLVA0 (potential hack), BIOS isn't actually waking us */ |
Imre Deak | 981a5ae | 2014-04-14 20:24:22 +0300 | [diff] [blame] | 4868 | I915_WRITE(VLV_GTLC_WAKE_CTRL, VLV_GTLC_ALLOWWAKEREQ); |
| 4869 | if (wait_for((I915_READ(VLV_GTLC_PW_STATUS) & |
| 4870 | VLV_GTLC_ALLOWWAKEACK), 10)) |
Jesse Barnes | d62b489 | 2013-03-08 10:45:53 -0800 | [diff] [blame] | 4871 | DRM_DEBUG_DRIVER("allow wake ack timed out\n"); |
| 4872 | } |
| 4873 | |
Oscar Mateo | a83014d | 2014-07-24 17:04:21 +0100 | [diff] [blame] | 4874 | if (!i915.enable_execlists) { |
| 4875 | dev_priv->gt.do_execbuf = i915_gem_ringbuffer_submission; |
| 4876 | dev_priv->gt.init_rings = i915_gem_init_rings; |
| 4877 | dev_priv->gt.cleanup_ring = intel_cleanup_ring_buffer; |
| 4878 | dev_priv->gt.stop_ring = intel_stop_ring_buffer; |
Oscar Mateo | 454afeb | 2014-07-24 17:04:22 +0100 | [diff] [blame] | 4879 | } else { |
| 4880 | dev_priv->gt.do_execbuf = intel_execlists_submission; |
| 4881 | dev_priv->gt.init_rings = intel_logical_rings_init; |
| 4882 | dev_priv->gt.cleanup_ring = intel_logical_ring_cleanup; |
| 4883 | dev_priv->gt.stop_ring = intel_logical_ring_stop; |
Oscar Mateo | a83014d | 2014-07-24 17:04:21 +0100 | [diff] [blame] | 4884 | } |
| 4885 | |
Chris Wilson | 5e4f518 | 2015-02-13 14:35:59 +0000 | [diff] [blame] | 4886 | /* This is just a security blanket to placate dragons. |
| 4887 | * On some systems, we very sporadically observe that the first TLBs |
| 4888 | * used by the CS may be stale, despite us poking the TLB reset. If |
| 4889 | * we hold the forcewake during initialisation these problems |
| 4890 | * just magically go away. |
| 4891 | */ |
| 4892 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); |
| 4893 | |
Daniel Vetter | 6c5566a | 2014-08-06 15:04:50 +0200 | [diff] [blame] | 4894 | ret = i915_gem_init_userptr(dev); |
Jani Nikula | 7bcc377 | 2014-12-05 14:17:42 +0200 | [diff] [blame] | 4895 | if (ret) |
| 4896 | goto out_unlock; |
Daniel Vetter | 6c5566a | 2014-08-06 15:04:50 +0200 | [diff] [blame] | 4897 | |
Ben Widawsky | d7e5008 | 2012-12-18 10:31:25 -0800 | [diff] [blame] | 4898 | i915_gem_init_global_gtt(dev); |
Jesse Barnes | d62b489 | 2013-03-08 10:45:53 -0800 | [diff] [blame] | 4899 | |
Ben Widawsky | 2fa48d8 | 2013-12-06 14:11:04 -0800 | [diff] [blame] | 4900 | ret = i915_gem_context_init(dev); |
Jani Nikula | 7bcc377 | 2014-12-05 14:17:42 +0200 | [diff] [blame] | 4901 | if (ret) |
| 4902 | goto out_unlock; |
Ben Widawsky | 2fa48d8 | 2013-12-06 14:11:04 -0800 | [diff] [blame] | 4903 | |
Daniel Vetter | 35a57ff | 2014-11-20 00:33:07 +0100 | [diff] [blame] | 4904 | ret = dev_priv->gt.init_rings(dev); |
| 4905 | if (ret) |
Jani Nikula | 7bcc377 | 2014-12-05 14:17:42 +0200 | [diff] [blame] | 4906 | goto out_unlock; |
Daniel Vetter | 53ca26c | 2012-04-26 23:28:03 +0200 | [diff] [blame] | 4907 | |
| 4908 | ret = i915_gem_init_hw(dev); |
Chris Wilson | 6099032 | 2014-04-09 09:19:42 +0100 | [diff] [blame] | 4909 | if (ret == -EIO) { |
| 4910 | /* Allow ring initialisation to fail by marking the GPU as |
| 4911 | * wedged. But we only want to do this where the GPU is angry, |
| 4912 | * for all other failure, such as an allocation failure, bail. |
| 4913 | */ |
| 4914 | DRM_ERROR("Failed to initialize GPU, declaring it wedged\n"); |
| 4915 | atomic_set_mask(I915_WEDGED, &dev_priv->gpu_error.reset_counter); |
| 4916 | ret = 0; |
Chris Wilson | 1070a42 | 2012-04-24 15:47:41 +0100 | [diff] [blame] | 4917 | } |
Jani Nikula | 7bcc377 | 2014-12-05 14:17:42 +0200 | [diff] [blame] | 4918 | |
| 4919 | out_unlock: |
Chris Wilson | 5e4f518 | 2015-02-13 14:35:59 +0000 | [diff] [blame] | 4920 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
Chris Wilson | 6099032 | 2014-04-09 09:19:42 +0100 | [diff] [blame] | 4921 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | 1070a42 | 2012-04-24 15:47:41 +0100 | [diff] [blame] | 4922 | |
Chris Wilson | 6099032 | 2014-04-09 09:19:42 +0100 | [diff] [blame] | 4923 | return ret; |
Chris Wilson | 1070a42 | 2012-04-24 15:47:41 +0100 | [diff] [blame] | 4924 | } |
| 4925 | |
Zou Nan hai | 8187a2b | 2010-05-21 09:08:55 +0800 | [diff] [blame] | 4926 | void |
| 4927 | i915_gem_cleanup_ringbuffer(struct drm_device *dev) |
| 4928 | { |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 4929 | struct drm_i915_private *dev_priv = dev->dev_private; |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 4930 | struct intel_engine_cs *ring; |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 4931 | int i; |
Zou Nan hai | 8187a2b | 2010-05-21 09:08:55 +0800 | [diff] [blame] | 4932 | |
Chris Wilson | b451951 | 2012-05-11 14:29:30 +0100 | [diff] [blame] | 4933 | for_each_ring(ring, dev_priv, i) |
Oscar Mateo | a83014d | 2014-07-24 17:04:21 +0100 | [diff] [blame] | 4934 | dev_priv->gt.cleanup_ring(ring); |
Zou Nan hai | 8187a2b | 2010-05-21 09:08:55 +0800 | [diff] [blame] | 4935 | } |
| 4936 | |
Chris Wilson | 6419340 | 2010-10-24 12:38:05 +0100 | [diff] [blame] | 4937 | static void |
Oscar Mateo | a4872ba | 2014-05-22 14:13:33 +0100 | [diff] [blame] | 4938 | init_ring_lists(struct intel_engine_cs *ring) |
Chris Wilson | 6419340 | 2010-10-24 12:38:05 +0100 | [diff] [blame] | 4939 | { |
| 4940 | INIT_LIST_HEAD(&ring->active_list); |
| 4941 | INIT_LIST_HEAD(&ring->request_list); |
Chris Wilson | 6419340 | 2010-10-24 12:38:05 +0100 | [diff] [blame] | 4942 | } |
| 4943 | |
Ben Widawsky | 7e0d96b | 2013-12-06 14:11:26 -0800 | [diff] [blame] | 4944 | void i915_init_vm(struct drm_i915_private *dev_priv, |
| 4945 | struct i915_address_space *vm) |
Ben Widawsky | fc8c067 | 2013-07-31 16:59:54 -0700 | [diff] [blame] | 4946 | { |
Ben Widawsky | 7e0d96b | 2013-12-06 14:11:26 -0800 | [diff] [blame] | 4947 | if (!i915_is_ggtt(vm)) |
| 4948 | drm_mm_init(&vm->mm, vm->start, vm->total); |
Ben Widawsky | fc8c067 | 2013-07-31 16:59:54 -0700 | [diff] [blame] | 4949 | vm->dev = dev_priv->dev; |
| 4950 | INIT_LIST_HEAD(&vm->active_list); |
| 4951 | INIT_LIST_HEAD(&vm->inactive_list); |
| 4952 | INIT_LIST_HEAD(&vm->global_link); |
Chris Wilson | f72d21e | 2014-01-09 22:57:22 +0000 | [diff] [blame] | 4953 | list_add_tail(&vm->global_link, &dev_priv->vm_list); |
Ben Widawsky | fc8c067 | 2013-07-31 16:59:54 -0700 | [diff] [blame] | 4954 | } |
| 4955 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4956 | void |
| 4957 | i915_gem_load(struct drm_device *dev) |
| 4958 | { |
Jani Nikula | 3e31c6c | 2014-03-31 14:27:16 +0300 | [diff] [blame] | 4959 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 42dcedd | 2012-11-15 11:32:30 +0000 | [diff] [blame] | 4960 | int i; |
| 4961 | |
| 4962 | dev_priv->slab = |
| 4963 | kmem_cache_create("i915_gem_object", |
| 4964 | sizeof(struct drm_i915_gem_object), 0, |
| 4965 | SLAB_HWCACHE_ALIGN, |
| 4966 | NULL); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4967 | |
Ben Widawsky | fc8c067 | 2013-07-31 16:59:54 -0700 | [diff] [blame] | 4968 | INIT_LIST_HEAD(&dev_priv->vm_list); |
| 4969 | i915_init_vm(dev_priv, &dev_priv->gtt.base); |
| 4970 | |
Ben Widawsky | a33afea | 2013-09-17 21:12:45 -0700 | [diff] [blame] | 4971 | INIT_LIST_HEAD(&dev_priv->context_list); |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 4972 | INIT_LIST_HEAD(&dev_priv->mm.unbound_list); |
| 4973 | INIT_LIST_HEAD(&dev_priv->mm.bound_list); |
Eric Anholt | a09ba7f | 2009-08-29 12:49:51 -0700 | [diff] [blame] | 4974 | INIT_LIST_HEAD(&dev_priv->mm.fence_list); |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 4975 | for (i = 0; i < I915_NUM_RINGS; i++) |
| 4976 | init_ring_lists(&dev_priv->ring[i]); |
Daniel Vetter | 4b9de73 | 2011-10-09 21:52:02 +0200 | [diff] [blame] | 4977 | for (i = 0; i < I915_MAX_NUM_FENCES; i++) |
Daniel Vetter | 007cc8a | 2010-04-28 11:02:31 +0200 | [diff] [blame] | 4978 | INIT_LIST_HEAD(&dev_priv->fence_regs[i].lru_list); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 4979 | INIT_DELAYED_WORK(&dev_priv->mm.retire_work, |
| 4980 | i915_gem_retire_work_handler); |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 4981 | INIT_DELAYED_WORK(&dev_priv->mm.idle_work, |
| 4982 | i915_gem_idle_work_handler); |
Daniel Vetter | 1f83fee | 2012-11-15 17:17:22 +0100 | [diff] [blame] | 4983 | init_waitqueue_head(&dev_priv->gpu_error.reset_queue); |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 4984 | |
Dave Airlie | 9440012 | 2010-07-20 13:15:31 +1000 | [diff] [blame] | 4985 | /* On GEN3 we really need to make sure the ARB C3 LP bit is set */ |
Ville Syrjälä | dbb4274 | 2014-02-25 15:13:41 +0200 | [diff] [blame] | 4986 | if (!drm_core_check_feature(dev, DRIVER_MODESET) && IS_GEN3(dev)) { |
Daniel Vetter | 5074329 | 2012-04-26 22:02:54 +0200 | [diff] [blame] | 4987 | I915_WRITE(MI_ARB_STATE, |
| 4988 | _MASKED_BIT_ENABLE(MI_ARB_C3_LP_WRITE_ENABLE)); |
Dave Airlie | 9440012 | 2010-07-20 13:15:31 +1000 | [diff] [blame] | 4989 | } |
| 4990 | |
Chris Wilson | 72bfa19 | 2010-12-19 11:42:05 +0000 | [diff] [blame] | 4991 | dev_priv->relative_constants_mode = I915_EXEC_CONSTANTS_REL_GENERAL; |
| 4992 | |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 4993 | /* Old X drivers will take 0-2 for front, back, depth buffers */ |
Eric Anholt | b397c83 | 2010-01-26 09:43:10 -0800 | [diff] [blame] | 4994 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
| 4995 | dev_priv->fence_reg_start = 3; |
Jesse Barnes | de151cf | 2008-11-12 10:03:55 -0800 | [diff] [blame] | 4996 | |
Ville Syrjälä | 42b5aea | 2013-04-09 13:02:47 +0300 | [diff] [blame] | 4997 | if (INTEL_INFO(dev)->gen >= 7 && !IS_VALLEYVIEW(dev)) |
| 4998 | dev_priv->num_fence_regs = 32; |
| 4999 | else 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] | 5000 | dev_priv->num_fence_regs = 16; |
| 5001 | else |
| 5002 | dev_priv->num_fence_regs = 8; |
| 5003 | |
Grégoire Henry | b5aa8a0 | 2009-06-23 15:41:02 +0200 | [diff] [blame] | 5004 | /* Initialize fence registers to zero */ |
Chris Wilson | 19b2dbd | 2013-06-12 10:15:12 +0100 | [diff] [blame] | 5005 | INIT_LIST_HEAD(&dev_priv->mm.fence_list); |
| 5006 | i915_gem_restore_fences(dev); |
Eric Anholt | 10ed13e | 2011-05-06 13:53:49 -0700 | [diff] [blame] | 5007 | |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 5008 | i915_gem_detect_bit_6_swizzle(dev); |
Kristian Høgsberg | 6b95a20 | 2009-11-18 11:25:18 -0500 | [diff] [blame] | 5009 | init_waitqueue_head(&dev_priv->pending_flip_queue); |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 5010 | |
Chris Wilson | ce453d8 | 2011-02-21 14:43:56 +0000 | [diff] [blame] | 5011 | dev_priv->mm.interruptible = true; |
| 5012 | |
Chris Wilson | ceabbba5 | 2014-03-25 13:23:04 +0000 | [diff] [blame] | 5013 | dev_priv->mm.shrinker.scan_objects = i915_gem_shrinker_scan; |
| 5014 | dev_priv->mm.shrinker.count_objects = i915_gem_shrinker_count; |
| 5015 | dev_priv->mm.shrinker.seeks = DEFAULT_SEEKS; |
| 5016 | register_shrinker(&dev_priv->mm.shrinker); |
Chris Wilson | 2cfcd32 | 2014-05-20 08:28:43 +0100 | [diff] [blame] | 5017 | |
| 5018 | dev_priv->mm.oom_notifier.notifier_call = i915_gem_shrinker_oom; |
| 5019 | register_oom_notifier(&dev_priv->mm.oom_notifier); |
Daniel Vetter | f99d706 | 2014-06-19 16:01:59 +0200 | [diff] [blame] | 5020 | |
Brad Volkin | 78a4237 | 2014-12-11 12:13:09 -0800 | [diff] [blame] | 5021 | i915_gem_batch_pool_init(dev, &dev_priv->mm.batch_pool); |
| 5022 | |
Daniel Vetter | f99d706 | 2014-06-19 16:01:59 +0200 | [diff] [blame] | 5023 | mutex_init(&dev_priv->fb_tracking.lock); |
Eric Anholt | 673a394 | 2008-07-30 12:06:12 -0700 | [diff] [blame] | 5024 | } |
Dave Airlie | 71acb5e | 2008-12-30 20:31:46 +1000 | [diff] [blame] | 5025 | |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 5026 | void i915_gem_release(struct drm_device *dev, struct drm_file *file) |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 5027 | { |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 5028 | struct drm_i915_file_private *file_priv = file->driver_priv; |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 5029 | |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 5030 | cancel_delayed_work_sync(&file_priv->mm.idle_work); |
| 5031 | |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 5032 | /* Clean up our request list when the client is going away, so that |
| 5033 | * later retire_requests won't dereference our soon-to-be-gone |
| 5034 | * file_priv. |
| 5035 | */ |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 5036 | spin_lock(&file_priv->mm.lock); |
Chris Wilson | f787a5f | 2010-09-24 16:02:42 +0100 | [diff] [blame] | 5037 | while (!list_empty(&file_priv->mm.request_list)) { |
| 5038 | struct drm_i915_gem_request *request; |
| 5039 | |
| 5040 | request = list_first_entry(&file_priv->mm.request_list, |
| 5041 | struct drm_i915_gem_request, |
| 5042 | client_list); |
| 5043 | list_del(&request->client_list); |
| 5044 | request->file_priv = NULL; |
| 5045 | } |
Chris Wilson | 1c25595 | 2010-09-26 11:03:27 +0100 | [diff] [blame] | 5046 | spin_unlock(&file_priv->mm.lock); |
Eric Anholt | b962442 | 2009-06-03 07:27:35 +0000 | [diff] [blame] | 5047 | } |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 5048 | |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 5049 | static void |
| 5050 | i915_gem_file_idle_work_handler(struct work_struct *work) |
| 5051 | { |
| 5052 | struct drm_i915_file_private *file_priv = |
| 5053 | container_of(work, typeof(*file_priv), mm.idle_work.work); |
| 5054 | |
| 5055 | atomic_set(&file_priv->rps_wait_boost, false); |
| 5056 | } |
| 5057 | |
| 5058 | int i915_gem_open(struct drm_device *dev, struct drm_file *file) |
| 5059 | { |
| 5060 | struct drm_i915_file_private *file_priv; |
Ben Widawsky | e422b88 | 2013-12-06 14:10:58 -0800 | [diff] [blame] | 5061 | int ret; |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 5062 | |
| 5063 | DRM_DEBUG_DRIVER("\n"); |
| 5064 | |
| 5065 | file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL); |
| 5066 | if (!file_priv) |
| 5067 | return -ENOMEM; |
| 5068 | |
| 5069 | file->driver_priv = file_priv; |
| 5070 | file_priv->dev_priv = dev->dev_private; |
Chris Wilson | ab0e7ff | 2014-02-25 17:11:24 +0200 | [diff] [blame] | 5071 | file_priv->file = file; |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 5072 | |
| 5073 | spin_lock_init(&file_priv->mm.lock); |
| 5074 | INIT_LIST_HEAD(&file_priv->mm.request_list); |
| 5075 | INIT_DELAYED_WORK(&file_priv->mm.idle_work, |
| 5076 | i915_gem_file_idle_work_handler); |
| 5077 | |
Ben Widawsky | e422b88 | 2013-12-06 14:10:58 -0800 | [diff] [blame] | 5078 | ret = i915_gem_context_open(dev, file); |
| 5079 | if (ret) |
| 5080 | kfree(file_priv); |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 5081 | |
Ben Widawsky | e422b88 | 2013-12-06 14:10:58 -0800 | [diff] [blame] | 5082 | return ret; |
Chris Wilson | b29c19b | 2013-09-25 17:34:56 +0100 | [diff] [blame] | 5083 | } |
| 5084 | |
Daniel Vetter | b680c37 | 2014-09-19 18:27:27 +0200 | [diff] [blame] | 5085 | /** |
| 5086 | * i915_gem_track_fb - update frontbuffer tracking |
| 5087 | * old: current GEM buffer for the frontbuffer slots |
| 5088 | * new: new GEM buffer for the frontbuffer slots |
| 5089 | * frontbuffer_bits: bitmask of frontbuffer slots |
| 5090 | * |
| 5091 | * This updates the frontbuffer tracking bits @frontbuffer_bits by clearing them |
| 5092 | * from @old and setting them in @new. Both @old and @new can be NULL. |
| 5093 | */ |
Daniel Vetter | a071fa0 | 2014-06-18 23:28:09 +0200 | [diff] [blame] | 5094 | void i915_gem_track_fb(struct drm_i915_gem_object *old, |
| 5095 | struct drm_i915_gem_object *new, |
| 5096 | unsigned frontbuffer_bits) |
| 5097 | { |
| 5098 | if (old) { |
| 5099 | WARN_ON(!mutex_is_locked(&old->base.dev->struct_mutex)); |
| 5100 | WARN_ON(!(old->frontbuffer_bits & frontbuffer_bits)); |
| 5101 | old->frontbuffer_bits &= ~frontbuffer_bits; |
| 5102 | } |
| 5103 | |
| 5104 | if (new) { |
| 5105 | WARN_ON(!mutex_is_locked(&new->base.dev->struct_mutex)); |
| 5106 | WARN_ON(new->frontbuffer_bits & frontbuffer_bits); |
| 5107 | new->frontbuffer_bits |= frontbuffer_bits; |
| 5108 | } |
| 5109 | } |
| 5110 | |
Chris Wilson | 5774506 | 2012-11-21 13:04:04 +0000 | [diff] [blame] | 5111 | static bool mutex_is_locked_by(struct mutex *mutex, struct task_struct *task) |
| 5112 | { |
| 5113 | if (!mutex_is_locked(mutex)) |
| 5114 | return false; |
| 5115 | |
Chris Wilson | a509405 | 2015-01-26 04:43:22 -0800 | [diff] [blame] | 5116 | #if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_MUTEXES) |
Chris Wilson | 5774506 | 2012-11-21 13:04:04 +0000 | [diff] [blame] | 5117 | return mutex->owner == task; |
| 5118 | #else |
| 5119 | /* Since UP may be pre-empted, we cannot assume that we own the lock */ |
| 5120 | return false; |
| 5121 | #endif |
| 5122 | } |
| 5123 | |
Chris Wilson | b453c4d | 2014-03-25 13:23:05 +0000 | [diff] [blame] | 5124 | static bool i915_gem_shrinker_lock(struct drm_device *dev, bool *unlock) |
| 5125 | { |
| 5126 | if (!mutex_trylock(&dev->struct_mutex)) { |
| 5127 | if (!mutex_is_locked_by(&dev->struct_mutex, current)) |
| 5128 | return false; |
| 5129 | |
| 5130 | if (to_i915(dev)->mm.shrinker_no_lock_stealing) |
| 5131 | return false; |
| 5132 | |
| 5133 | *unlock = false; |
| 5134 | } else |
| 5135 | *unlock = true; |
| 5136 | |
| 5137 | return true; |
| 5138 | } |
| 5139 | |
Chris Wilson | ceabbba5 | 2014-03-25 13:23:04 +0000 | [diff] [blame] | 5140 | static int num_vma_bound(struct drm_i915_gem_object *obj) |
| 5141 | { |
| 5142 | struct i915_vma *vma; |
| 5143 | int count = 0; |
| 5144 | |
| 5145 | list_for_each_entry(vma, &obj->vma_list, vma_link) |
| 5146 | if (drm_mm_node_allocated(&vma->node)) |
| 5147 | count++; |
| 5148 | |
| 5149 | return count; |
| 5150 | } |
| 5151 | |
Dave Chinner | 7dc19d5 | 2013-08-28 10:18:11 +1000 | [diff] [blame] | 5152 | static unsigned long |
Chris Wilson | ceabbba5 | 2014-03-25 13:23:04 +0000 | [diff] [blame] | 5153 | i915_gem_shrinker_count(struct shrinker *shrinker, struct shrink_control *sc) |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 5154 | { |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 5155 | struct drm_i915_private *dev_priv = |
Chris Wilson | ceabbba5 | 2014-03-25 13:23:04 +0000 | [diff] [blame] | 5156 | container_of(shrinker, struct drm_i915_private, mm.shrinker); |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 5157 | struct drm_device *dev = dev_priv->dev; |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 5158 | struct drm_i915_gem_object *obj; |
Dave Chinner | 7dc19d5 | 2013-08-28 10:18:11 +1000 | [diff] [blame] | 5159 | unsigned long count; |
Chris Wilson | b453c4d | 2014-03-25 13:23:05 +0000 | [diff] [blame] | 5160 | bool unlock; |
Chris Wilson | 17250b7 | 2010-10-28 12:51:39 +0100 | [diff] [blame] | 5161 | |
Chris Wilson | b453c4d | 2014-03-25 13:23:05 +0000 | [diff] [blame] | 5162 | if (!i915_gem_shrinker_lock(dev, &unlock)) |
| 5163 | return 0; |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 5164 | |
Dave Chinner | 7dc19d5 | 2013-08-28 10:18:11 +1000 | [diff] [blame] | 5165 | count = 0; |
Ben Widawsky | 35c20a6 | 2013-05-31 11:28:48 -0700 | [diff] [blame] | 5166 | list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_list) |
Chris Wilson | a557017 | 2012-09-04 21:02:54 +0100 | [diff] [blame] | 5167 | if (obj->pages_pin_count == 0) |
Dave Chinner | 7dc19d5 | 2013-08-28 10:18:11 +1000 | [diff] [blame] | 5168 | count += obj->base.size >> PAGE_SHIFT; |
Ben Widawsky | fcb4a57 | 2013-07-31 16:59:57 -0700 | [diff] [blame] | 5169 | |
| 5170 | list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) { |
Chris Wilson | ceabbba5 | 2014-03-25 13:23:04 +0000 | [diff] [blame] | 5171 | if (!i915_gem_obj_is_pinned(obj) && |
| 5172 | obj->pages_pin_count == num_vma_bound(obj)) |
Dave Chinner | 7dc19d5 | 2013-08-28 10:18:11 +1000 | [diff] [blame] | 5173 | count += obj->base.size >> PAGE_SHIFT; |
Ben Widawsky | fcb4a57 | 2013-07-31 16:59:57 -0700 | [diff] [blame] | 5174 | } |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 5175 | |
Chris Wilson | 5774506 | 2012-11-21 13:04:04 +0000 | [diff] [blame] | 5176 | if (unlock) |
| 5177 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | d9973b4 | 2013-10-04 10:33:00 +0100 | [diff] [blame] | 5178 | |
Dave Chinner | 7dc19d5 | 2013-08-28 10:18:11 +1000 | [diff] [blame] | 5179 | return count; |
Chris Wilson | 3116971 | 2009-09-14 16:50:28 +0100 | [diff] [blame] | 5180 | } |
Ben Widawsky | a70a314 | 2013-07-31 16:59:56 -0700 | [diff] [blame] | 5181 | |
| 5182 | /* All the new VM stuff */ |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 5183 | unsigned long i915_gem_obj_offset_view(struct drm_i915_gem_object *o, |
| 5184 | struct i915_address_space *vm, |
| 5185 | enum i915_ggtt_view_type view) |
Ben Widawsky | a70a314 | 2013-07-31 16:59:56 -0700 | [diff] [blame] | 5186 | { |
| 5187 | struct drm_i915_private *dev_priv = o->base.dev->dev_private; |
| 5188 | struct i915_vma *vma; |
| 5189 | |
Daniel Vetter | 896ab1a | 2014-08-06 15:04:51 +0200 | [diff] [blame] | 5190 | WARN_ON(vm == &dev_priv->mm.aliasing_ppgtt->base); |
Ben Widawsky | a70a314 | 2013-07-31 16:59:56 -0700 | [diff] [blame] | 5191 | |
Ben Widawsky | a70a314 | 2013-07-31 16:59:56 -0700 | [diff] [blame] | 5192 | list_for_each_entry(vma, &o->vma_list, vma_link) { |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 5193 | if (vma->vm == vm && vma->ggtt_view.type == view) |
Ben Widawsky | a70a314 | 2013-07-31 16:59:56 -0700 | [diff] [blame] | 5194 | return vma->node.start; |
| 5195 | |
| 5196 | } |
Daniel Vetter | f25748ea | 2014-06-17 22:34:38 +0200 | [diff] [blame] | 5197 | WARN(1, "%s vma for this object not found.\n", |
| 5198 | i915_is_ggtt(vm) ? "global" : "ppgtt"); |
Ben Widawsky | a70a314 | 2013-07-31 16:59:56 -0700 | [diff] [blame] | 5199 | return -1; |
| 5200 | } |
| 5201 | |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 5202 | bool i915_gem_obj_bound_view(struct drm_i915_gem_object *o, |
| 5203 | struct i915_address_space *vm, |
| 5204 | enum i915_ggtt_view_type view) |
Ben Widawsky | a70a314 | 2013-07-31 16:59:56 -0700 | [diff] [blame] | 5205 | { |
| 5206 | struct i915_vma *vma; |
| 5207 | |
| 5208 | list_for_each_entry(vma, &o->vma_list, vma_link) |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 5209 | if (vma->vm == vm && |
| 5210 | vma->ggtt_view.type == view && |
| 5211 | drm_mm_node_allocated(&vma->node)) |
Ben Widawsky | a70a314 | 2013-07-31 16:59:56 -0700 | [diff] [blame] | 5212 | return true; |
| 5213 | |
| 5214 | return false; |
| 5215 | } |
| 5216 | |
| 5217 | bool i915_gem_obj_bound_any(struct drm_i915_gem_object *o) |
| 5218 | { |
Chris Wilson | 5a1d5eb | 2013-09-10 11:27:37 +0100 | [diff] [blame] | 5219 | struct i915_vma *vma; |
Ben Widawsky | a70a314 | 2013-07-31 16:59:56 -0700 | [diff] [blame] | 5220 | |
Chris Wilson | 5a1d5eb | 2013-09-10 11:27:37 +0100 | [diff] [blame] | 5221 | list_for_each_entry(vma, &o->vma_list, vma_link) |
| 5222 | if (drm_mm_node_allocated(&vma->node)) |
Ben Widawsky | a70a314 | 2013-07-31 16:59:56 -0700 | [diff] [blame] | 5223 | return true; |
| 5224 | |
| 5225 | return false; |
| 5226 | } |
| 5227 | |
| 5228 | unsigned long i915_gem_obj_size(struct drm_i915_gem_object *o, |
| 5229 | struct i915_address_space *vm) |
| 5230 | { |
| 5231 | struct drm_i915_private *dev_priv = o->base.dev->dev_private; |
| 5232 | struct i915_vma *vma; |
| 5233 | |
Daniel Vetter | 896ab1a | 2014-08-06 15:04:51 +0200 | [diff] [blame] | 5234 | WARN_ON(vm == &dev_priv->mm.aliasing_ppgtt->base); |
Ben Widawsky | a70a314 | 2013-07-31 16:59:56 -0700 | [diff] [blame] | 5235 | |
| 5236 | BUG_ON(list_empty(&o->vma_list)); |
| 5237 | |
| 5238 | list_for_each_entry(vma, &o->vma_list, vma_link) |
| 5239 | if (vma->vm == vm) |
| 5240 | return vma->node.size; |
| 5241 | |
| 5242 | return 0; |
| 5243 | } |
| 5244 | |
Dave Chinner | 7dc19d5 | 2013-08-28 10:18:11 +1000 | [diff] [blame] | 5245 | static unsigned long |
Chris Wilson | ceabbba5 | 2014-03-25 13:23:04 +0000 | [diff] [blame] | 5246 | i915_gem_shrinker_scan(struct shrinker *shrinker, struct shrink_control *sc) |
Dave Chinner | 7dc19d5 | 2013-08-28 10:18:11 +1000 | [diff] [blame] | 5247 | { |
| 5248 | struct drm_i915_private *dev_priv = |
Chris Wilson | ceabbba5 | 2014-03-25 13:23:04 +0000 | [diff] [blame] | 5249 | container_of(shrinker, struct drm_i915_private, mm.shrinker); |
Dave Chinner | 7dc19d5 | 2013-08-28 10:18:11 +1000 | [diff] [blame] | 5250 | struct drm_device *dev = dev_priv->dev; |
Dave Chinner | 7dc19d5 | 2013-08-28 10:18:11 +1000 | [diff] [blame] | 5251 | unsigned long freed; |
Chris Wilson | b453c4d | 2014-03-25 13:23:05 +0000 | [diff] [blame] | 5252 | bool unlock; |
Dave Chinner | 7dc19d5 | 2013-08-28 10:18:11 +1000 | [diff] [blame] | 5253 | |
Chris Wilson | b453c4d | 2014-03-25 13:23:05 +0000 | [diff] [blame] | 5254 | if (!i915_gem_shrinker_lock(dev, &unlock)) |
| 5255 | return SHRINK_STOP; |
Dave Chinner | 7dc19d5 | 2013-08-28 10:18:11 +1000 | [diff] [blame] | 5256 | |
Chris Wilson | 21ab4e7 | 2014-09-09 11:16:08 +0100 | [diff] [blame] | 5257 | freed = i915_gem_shrink(dev_priv, |
| 5258 | sc->nr_to_scan, |
| 5259 | I915_SHRINK_BOUND | |
| 5260 | I915_SHRINK_UNBOUND | |
| 5261 | I915_SHRINK_PURGEABLE); |
Chris Wilson | d9973b4 | 2013-10-04 10:33:00 +0100 | [diff] [blame] | 5262 | if (freed < sc->nr_to_scan) |
Chris Wilson | 21ab4e7 | 2014-09-09 11:16:08 +0100 | [diff] [blame] | 5263 | freed += i915_gem_shrink(dev_priv, |
| 5264 | sc->nr_to_scan - freed, |
| 5265 | I915_SHRINK_BOUND | |
| 5266 | I915_SHRINK_UNBOUND); |
Dave Chinner | 7dc19d5 | 2013-08-28 10:18:11 +1000 | [diff] [blame] | 5267 | if (unlock) |
| 5268 | mutex_unlock(&dev->struct_mutex); |
Chris Wilson | d9973b4 | 2013-10-04 10:33:00 +0100 | [diff] [blame] | 5269 | |
Dave Chinner | 7dc19d5 | 2013-08-28 10:18:11 +1000 | [diff] [blame] | 5270 | return freed; |
| 5271 | } |
Ben Widawsky | 5c2abbe | 2013-09-24 09:57:57 -0700 | [diff] [blame] | 5272 | |
Chris Wilson | 2cfcd32 | 2014-05-20 08:28:43 +0100 | [diff] [blame] | 5273 | static int |
| 5274 | i915_gem_shrinker_oom(struct notifier_block *nb, unsigned long event, void *ptr) |
| 5275 | { |
| 5276 | struct drm_i915_private *dev_priv = |
| 5277 | container_of(nb, struct drm_i915_private, mm.oom_notifier); |
| 5278 | struct drm_device *dev = dev_priv->dev; |
| 5279 | struct drm_i915_gem_object *obj; |
| 5280 | unsigned long timeout = msecs_to_jiffies(5000) + 1; |
Chris Wilson | 005445c | 2014-10-08 11:25:16 +0100 | [diff] [blame] | 5281 | unsigned long pinned, bound, unbound, freed_pages; |
Chris Wilson | 2cfcd32 | 2014-05-20 08:28:43 +0100 | [diff] [blame] | 5282 | bool was_interruptible; |
| 5283 | bool unlock; |
| 5284 | |
Chris Wilson | a1db2fa | 2014-07-11 11:28:00 +0100 | [diff] [blame] | 5285 | while (!i915_gem_shrinker_lock(dev, &unlock) && --timeout) { |
Chris Wilson | 2cfcd32 | 2014-05-20 08:28:43 +0100 | [diff] [blame] | 5286 | schedule_timeout_killable(1); |
Chris Wilson | a1db2fa | 2014-07-11 11:28:00 +0100 | [diff] [blame] | 5287 | if (fatal_signal_pending(current)) |
| 5288 | return NOTIFY_DONE; |
| 5289 | } |
Chris Wilson | 2cfcd32 | 2014-05-20 08:28:43 +0100 | [diff] [blame] | 5290 | if (timeout == 0) { |
| 5291 | pr_err("Unable to purge GPU memory due lock contention.\n"); |
| 5292 | return NOTIFY_DONE; |
| 5293 | } |
| 5294 | |
| 5295 | was_interruptible = dev_priv->mm.interruptible; |
| 5296 | dev_priv->mm.interruptible = false; |
| 5297 | |
Chris Wilson | 005445c | 2014-10-08 11:25:16 +0100 | [diff] [blame] | 5298 | freed_pages = i915_gem_shrink_all(dev_priv); |
Chris Wilson | 2cfcd32 | 2014-05-20 08:28:43 +0100 | [diff] [blame] | 5299 | |
| 5300 | dev_priv->mm.interruptible = was_interruptible; |
| 5301 | |
| 5302 | /* Because we may be allocating inside our own driver, we cannot |
| 5303 | * assert that there are no objects with pinned pages that are not |
| 5304 | * being pointed to by hardware. |
| 5305 | */ |
| 5306 | unbound = bound = pinned = 0; |
| 5307 | list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_list) { |
| 5308 | if (!obj->base.filp) /* not backed by a freeable object */ |
| 5309 | continue; |
| 5310 | |
| 5311 | if (obj->pages_pin_count) |
| 5312 | pinned += obj->base.size; |
| 5313 | else |
| 5314 | unbound += obj->base.size; |
| 5315 | } |
| 5316 | list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) { |
| 5317 | if (!obj->base.filp) |
| 5318 | continue; |
| 5319 | |
| 5320 | if (obj->pages_pin_count) |
| 5321 | pinned += obj->base.size; |
| 5322 | else |
| 5323 | bound += obj->base.size; |
| 5324 | } |
| 5325 | |
| 5326 | if (unlock) |
| 5327 | mutex_unlock(&dev->struct_mutex); |
| 5328 | |
Chris Wilson | bb9059d | 2014-10-08 11:25:17 +0100 | [diff] [blame] | 5329 | if (freed_pages || unbound || bound) |
| 5330 | pr_info("Purging GPU memory, %lu bytes freed, %lu bytes still pinned.\n", |
| 5331 | freed_pages << PAGE_SHIFT, pinned); |
Chris Wilson | 2cfcd32 | 2014-05-20 08:28:43 +0100 | [diff] [blame] | 5332 | if (unbound || bound) |
| 5333 | pr_err("%lu and %lu bytes still available in the " |
| 5334 | "bound and unbound GPU page lists.\n", |
| 5335 | bound, unbound); |
| 5336 | |
Chris Wilson | 005445c | 2014-10-08 11:25:16 +0100 | [diff] [blame] | 5337 | *(unsigned long *)ptr += freed_pages; |
Chris Wilson | 2cfcd32 | 2014-05-20 08:28:43 +0100 | [diff] [blame] | 5338 | return NOTIFY_DONE; |
| 5339 | } |
| 5340 | |
Ben Widawsky | 5c2abbe | 2013-09-24 09:57:57 -0700 | [diff] [blame] | 5341 | struct i915_vma *i915_gem_obj_to_ggtt(struct drm_i915_gem_object *obj) |
| 5342 | { |
Tvrtko Ursulin | f763566 | 2014-12-03 14:59:24 +0000 | [diff] [blame] | 5343 | struct i915_address_space *ggtt = i915_obj_to_ggtt(obj); |
Ben Widawsky | 5c2abbe | 2013-09-24 09:57:57 -0700 | [diff] [blame] | 5344 | struct i915_vma *vma; |
| 5345 | |
Tvrtko Ursulin | fe14d5f | 2014-12-10 17:27:58 +0000 | [diff] [blame] | 5346 | list_for_each_entry(vma, &obj->vma_list, vma_link) |
| 5347 | if (vma->vm == ggtt && |
| 5348 | vma->ggtt_view.type == I915_GGTT_VIEW_NORMAL) |
Tvrtko Ursulin | f763566 | 2014-12-03 14:59:24 +0000 | [diff] [blame] | 5349 | return vma; |
Ben Widawsky | 5c2abbe | 2013-09-24 09:57:57 -0700 | [diff] [blame] | 5350 | |
Tvrtko Ursulin | f763566 | 2014-12-03 14:59:24 +0000 | [diff] [blame] | 5351 | return NULL; |
Ben Widawsky | 5c2abbe | 2013-09-24 09:57:57 -0700 | [diff] [blame] | 5352 | } |