Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2008,2010 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 | * Chris Wilson <chris@chris-wilson.co.uk> |
| 26 | * |
| 27 | */ |
| 28 | |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 29 | #include <drm/drmP.h> |
| 30 | #include <drm/i915_drm.h> |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 31 | #include "i915_drv.h" |
| 32 | #include "i915_trace.h" |
| 33 | #include "intel_drv.h" |
Eugeni Dodonov | f45b555 | 2011-12-09 17:16:37 -0800 | [diff] [blame] | 34 | #include <linux/dma_remapping.h> |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 35 | |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 36 | struct eb_objects { |
Chris Wilson | bcffc3f | 2013-01-08 10:53:15 +0000 | [diff] [blame] | 37 | struct list_head objects; |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 38 | int and; |
Chris Wilson | eef90cc | 2013-01-08 10:53:17 +0000 | [diff] [blame] | 39 | union { |
| 40 | struct drm_i915_gem_object *lut[0]; |
| 41 | struct hlist_head buckets[0]; |
| 42 | }; |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 43 | }; |
| 44 | |
| 45 | static struct eb_objects * |
Chris Wilson | eef90cc | 2013-01-08 10:53:17 +0000 | [diff] [blame] | 46 | eb_create(struct drm_i915_gem_execbuffer2 *args) |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 47 | { |
Chris Wilson | eef90cc | 2013-01-08 10:53:17 +0000 | [diff] [blame] | 48 | struct eb_objects *eb = NULL; |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 49 | |
Chris Wilson | eef90cc | 2013-01-08 10:53:17 +0000 | [diff] [blame] | 50 | if (args->flags & I915_EXEC_HANDLE_LUT) { |
| 51 | int size = args->buffer_count; |
| 52 | size *= sizeof(struct drm_i915_gem_object *); |
| 53 | size += sizeof(struct eb_objects); |
| 54 | eb = kmalloc(size, GFP_TEMPORARY | __GFP_NOWARN | __GFP_NORETRY); |
| 55 | } |
| 56 | |
| 57 | if (eb == NULL) { |
| 58 | int size = args->buffer_count; |
| 59 | int count = PAGE_SIZE / sizeof(struct hlist_head) / 2; |
| 60 | BUILD_BUG_ON(!is_power_of_2(PAGE_SIZE / sizeof(struct hlist_head))); |
| 61 | while (count > 2*size) |
| 62 | count >>= 1; |
| 63 | eb = kzalloc(count*sizeof(struct hlist_head) + |
| 64 | sizeof(struct eb_objects), |
| 65 | GFP_TEMPORARY); |
| 66 | if (eb == NULL) |
| 67 | return eb; |
| 68 | |
| 69 | eb->and = count - 1; |
| 70 | } else |
| 71 | eb->and = -args->buffer_count; |
| 72 | |
Chris Wilson | bcffc3f | 2013-01-08 10:53:15 +0000 | [diff] [blame] | 73 | INIT_LIST_HEAD(&eb->objects); |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 74 | return eb; |
| 75 | } |
| 76 | |
| 77 | static void |
| 78 | eb_reset(struct eb_objects *eb) |
| 79 | { |
Chris Wilson | eef90cc | 2013-01-08 10:53:17 +0000 | [diff] [blame] | 80 | if (eb->and >= 0) |
| 81 | memset(eb->buckets, 0, (eb->and+1)*sizeof(struct hlist_head)); |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 82 | } |
| 83 | |
Chris Wilson | 3b96eff | 2013-01-08 10:53:14 +0000 | [diff] [blame] | 84 | static int |
| 85 | eb_lookup_objects(struct eb_objects *eb, |
| 86 | struct drm_i915_gem_exec_object2 *exec, |
Chris Wilson | eef90cc | 2013-01-08 10:53:17 +0000 | [diff] [blame] | 87 | const struct drm_i915_gem_execbuffer2 *args, |
Chris Wilson | bcffc3f | 2013-01-08 10:53:15 +0000 | [diff] [blame] | 88 | struct drm_file *file) |
Chris Wilson | 3b96eff | 2013-01-08 10:53:14 +0000 | [diff] [blame] | 89 | { |
| 90 | int i; |
| 91 | |
| 92 | spin_lock(&file->table_lock); |
Chris Wilson | eef90cc | 2013-01-08 10:53:17 +0000 | [diff] [blame] | 93 | for (i = 0; i < args->buffer_count; i++) { |
Chris Wilson | 3b96eff | 2013-01-08 10:53:14 +0000 | [diff] [blame] | 94 | struct drm_i915_gem_object *obj; |
| 95 | |
| 96 | obj = to_intel_bo(idr_find(&file->object_idr, exec[i].handle)); |
| 97 | if (obj == NULL) { |
| 98 | spin_unlock(&file->table_lock); |
| 99 | DRM_DEBUG("Invalid object handle %d at index %d\n", |
| 100 | exec[i].handle, i); |
| 101 | return -ENOENT; |
| 102 | } |
| 103 | |
| 104 | if (!list_empty(&obj->exec_list)) { |
| 105 | spin_unlock(&file->table_lock); |
| 106 | DRM_DEBUG("Object %p [handle %d, index %d] appears more than once in object list\n", |
| 107 | obj, exec[i].handle, i); |
| 108 | return -EINVAL; |
| 109 | } |
| 110 | |
| 111 | drm_gem_object_reference(&obj->base); |
Chris Wilson | bcffc3f | 2013-01-08 10:53:15 +0000 | [diff] [blame] | 112 | list_add_tail(&obj->exec_list, &eb->objects); |
Chris Wilson | 3b96eff | 2013-01-08 10:53:14 +0000 | [diff] [blame] | 113 | |
Chris Wilson | 3b96eff | 2013-01-08 10:53:14 +0000 | [diff] [blame] | 114 | obj->exec_entry = &exec[i]; |
Chris Wilson | eef90cc | 2013-01-08 10:53:17 +0000 | [diff] [blame] | 115 | if (eb->and < 0) { |
| 116 | eb->lut[i] = obj; |
| 117 | } else { |
| 118 | uint32_t handle = args->flags & I915_EXEC_HANDLE_LUT ? i : exec[i].handle; |
| 119 | obj->exec_handle = handle; |
| 120 | hlist_add_head(&obj->exec_node, |
| 121 | &eb->buckets[handle & eb->and]); |
| 122 | } |
Chris Wilson | 3b96eff | 2013-01-08 10:53:14 +0000 | [diff] [blame] | 123 | } |
| 124 | spin_unlock(&file->table_lock); |
| 125 | |
| 126 | return 0; |
| 127 | } |
| 128 | |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 129 | static struct drm_i915_gem_object * |
| 130 | eb_get_object(struct eb_objects *eb, unsigned long handle) |
| 131 | { |
Chris Wilson | eef90cc | 2013-01-08 10:53:17 +0000 | [diff] [blame] | 132 | if (eb->and < 0) { |
| 133 | if (handle >= -eb->and) |
| 134 | return NULL; |
| 135 | return eb->lut[handle]; |
| 136 | } else { |
| 137 | struct hlist_head *head; |
| 138 | struct hlist_node *node; |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 139 | |
Chris Wilson | eef90cc | 2013-01-08 10:53:17 +0000 | [diff] [blame] | 140 | head = &eb->buckets[handle & eb->and]; |
| 141 | hlist_for_each(node, head) { |
| 142 | struct drm_i915_gem_object *obj; |
| 143 | |
| 144 | obj = hlist_entry(node, struct drm_i915_gem_object, exec_node); |
| 145 | if (obj->exec_handle == handle) |
| 146 | return obj; |
| 147 | } |
| 148 | return NULL; |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 149 | } |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 150 | } |
| 151 | |
| 152 | static void |
| 153 | eb_destroy(struct eb_objects *eb) |
| 154 | { |
Chris Wilson | bcffc3f | 2013-01-08 10:53:15 +0000 | [diff] [blame] | 155 | while (!list_empty(&eb->objects)) { |
| 156 | struct drm_i915_gem_object *obj; |
| 157 | |
| 158 | obj = list_first_entry(&eb->objects, |
| 159 | struct drm_i915_gem_object, |
| 160 | exec_list); |
| 161 | list_del_init(&obj->exec_list); |
| 162 | drm_gem_object_unreference(&obj->base); |
| 163 | } |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 164 | kfree(eb); |
| 165 | } |
| 166 | |
Chris Wilson | dabdfe0 | 2012-03-26 10:10:27 +0200 | [diff] [blame] | 167 | static inline int use_cpu_reloc(struct drm_i915_gem_object *obj) |
| 168 | { |
| 169 | return (obj->base.write_domain == I915_GEM_DOMAIN_CPU || |
Chris Wilson | 504c726 | 2012-08-23 13:12:52 +0100 | [diff] [blame] | 170 | !obj->map_and_fenceable || |
Chris Wilson | dabdfe0 | 2012-03-26 10:10:27 +0200 | [diff] [blame] | 171 | obj->cache_level != I915_CACHE_NONE); |
| 172 | } |
| 173 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 174 | static int |
| 175 | i915_gem_execbuffer_relocate_entry(struct drm_i915_gem_object *obj, |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 176 | struct eb_objects *eb, |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 177 | struct drm_i915_gem_relocation_entry *reloc) |
| 178 | { |
| 179 | struct drm_device *dev = obj->base.dev; |
| 180 | struct drm_gem_object *target_obj; |
Daniel Vetter | 149c840 | 2012-02-15 23:50:23 +0100 | [diff] [blame] | 181 | struct drm_i915_gem_object *target_i915_obj; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 182 | uint32_t target_offset; |
| 183 | int ret = -EINVAL; |
| 184 | |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 185 | /* we've already hold a reference to all valid objects */ |
| 186 | target_obj = &eb_get_object(eb, reloc->target_handle)->base; |
| 187 | if (unlikely(target_obj == NULL)) |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 188 | return -ENOENT; |
| 189 | |
Daniel Vetter | 149c840 | 2012-02-15 23:50:23 +0100 | [diff] [blame] | 190 | target_i915_obj = to_intel_bo(target_obj); |
| 191 | target_offset = target_i915_obj->gtt_offset; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 192 | |
Eric Anholt | e844b99 | 2012-07-31 15:35:01 -0700 | [diff] [blame] | 193 | /* Sandybridge PPGTT errata: We need a global gtt mapping for MI and |
| 194 | * pipe_control writes because the gpu doesn't properly redirect them |
| 195 | * through the ppgtt for non_secure batchbuffers. */ |
| 196 | if (unlikely(IS_GEN6(dev) && |
| 197 | reloc->write_domain == I915_GEM_DOMAIN_INSTRUCTION && |
| 198 | !target_i915_obj->has_global_gtt_mapping)) { |
| 199 | i915_gem_gtt_bind_object(target_i915_obj, |
| 200 | target_i915_obj->cache_level); |
| 201 | } |
| 202 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 203 | /* Validate that the target is in a valid r/w GPU domain */ |
Chris Wilson | b8f7ab1 | 2010-12-08 10:43:06 +0000 | [diff] [blame] | 204 | if (unlikely(reloc->write_domain & (reloc->write_domain - 1))) { |
Daniel Vetter | ff24019 | 2012-01-31 21:08:14 +0100 | [diff] [blame] | 205 | DRM_DEBUG("reloc with multiple write domains: " |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 206 | "obj %p target %d offset %d " |
| 207 | "read %08x write %08x", |
| 208 | obj, reloc->target_handle, |
| 209 | (int) reloc->offset, |
| 210 | reloc->read_domains, |
| 211 | reloc->write_domain); |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 212 | return ret; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 213 | } |
Daniel Vetter | 4ca4a25 | 2011-12-14 13:57:27 +0100 | [diff] [blame] | 214 | if (unlikely((reloc->write_domain | reloc->read_domains) |
| 215 | & ~I915_GEM_GPU_DOMAINS)) { |
Daniel Vetter | ff24019 | 2012-01-31 21:08:14 +0100 | [diff] [blame] | 216 | DRM_DEBUG("reloc with read/write non-GPU domains: " |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 217 | "obj %p target %d offset %d " |
| 218 | "read %08x write %08x", |
| 219 | obj, reloc->target_handle, |
| 220 | (int) reloc->offset, |
| 221 | reloc->read_domains, |
| 222 | reloc->write_domain); |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 223 | return ret; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 224 | } |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 225 | |
| 226 | target_obj->pending_read_domains |= reloc->read_domains; |
| 227 | target_obj->pending_write_domain |= reloc->write_domain; |
| 228 | |
| 229 | /* If the relocation already has the right value in it, no |
| 230 | * more work needs to be done. |
| 231 | */ |
| 232 | if (target_offset == reloc->presumed_offset) |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 233 | return 0; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 234 | |
| 235 | /* Check that the relocation address is valid... */ |
Chris Wilson | b8f7ab1 | 2010-12-08 10:43:06 +0000 | [diff] [blame] | 236 | if (unlikely(reloc->offset > obj->base.size - 4)) { |
Daniel Vetter | ff24019 | 2012-01-31 21:08:14 +0100 | [diff] [blame] | 237 | DRM_DEBUG("Relocation beyond object bounds: " |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 238 | "obj %p target %d offset %d size %d.\n", |
| 239 | obj, reloc->target_handle, |
| 240 | (int) reloc->offset, |
| 241 | (int) obj->base.size); |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 242 | return ret; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 243 | } |
Chris Wilson | b8f7ab1 | 2010-12-08 10:43:06 +0000 | [diff] [blame] | 244 | if (unlikely(reloc->offset & 3)) { |
Daniel Vetter | ff24019 | 2012-01-31 21:08:14 +0100 | [diff] [blame] | 245 | DRM_DEBUG("Relocation not 4-byte aligned: " |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 246 | "obj %p target %d offset %d.\n", |
| 247 | obj, reloc->target_handle, |
| 248 | (int) reloc->offset); |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 249 | return ret; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 250 | } |
| 251 | |
Chris Wilson | dabdfe0 | 2012-03-26 10:10:27 +0200 | [diff] [blame] | 252 | /* We can't wait for rendering with pagefaults disabled */ |
| 253 | if (obj->active && in_atomic()) |
| 254 | return -EFAULT; |
| 255 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 256 | reloc->delta += target_offset; |
Chris Wilson | dabdfe0 | 2012-03-26 10:10:27 +0200 | [diff] [blame] | 257 | if (use_cpu_reloc(obj)) { |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 258 | uint32_t page_offset = reloc->offset & ~PAGE_MASK; |
| 259 | char *vaddr; |
| 260 | |
Chris Wilson | dabdfe0 | 2012-03-26 10:10:27 +0200 | [diff] [blame] | 261 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
| 262 | if (ret) |
| 263 | return ret; |
| 264 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 265 | vaddr = kmap_atomic(i915_gem_object_get_page(obj, |
| 266 | reloc->offset >> PAGE_SHIFT)); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 267 | *(uint32_t *)(vaddr + page_offset) = reloc->delta; |
| 268 | kunmap_atomic(vaddr); |
| 269 | } else { |
| 270 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 271 | uint32_t __iomem *reloc_entry; |
| 272 | void __iomem *reloc_page; |
| 273 | |
Chris Wilson | 7b09638 | 2012-04-14 09:55:51 +0100 | [diff] [blame] | 274 | ret = i915_gem_object_set_to_gtt_domain(obj, true); |
| 275 | if (ret) |
| 276 | return ret; |
| 277 | |
| 278 | ret = i915_gem_object_put_fence(obj); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 279 | if (ret) |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 280 | return ret; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 281 | |
| 282 | /* Map the page containing the relocation we're going to perform. */ |
| 283 | reloc->offset += obj->gtt_offset; |
Ben Widawsky | 5d4545a | 2013-01-17 12:45:15 -0800 | [diff] [blame] | 284 | reloc_page = io_mapping_map_atomic_wc(dev_priv->gtt.mappable, |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 285 | reloc->offset & PAGE_MASK); |
| 286 | reloc_entry = (uint32_t __iomem *) |
| 287 | (reloc_page + (reloc->offset & ~PAGE_MASK)); |
| 288 | iowrite32(reloc->delta, reloc_entry); |
| 289 | io_mapping_unmap_atomic(reloc_page); |
| 290 | } |
| 291 | |
| 292 | /* and update the user's relocation entry */ |
| 293 | reloc->presumed_offset = target_offset; |
| 294 | |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 295 | return 0; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 296 | } |
| 297 | |
| 298 | static int |
| 299 | i915_gem_execbuffer_relocate_object(struct drm_i915_gem_object *obj, |
Chris Wilson | 6fe4f14 | 2011-01-10 17:35:37 +0000 | [diff] [blame] | 300 | struct eb_objects *eb) |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 301 | { |
Chris Wilson | 1d83f44 | 2012-03-24 20:12:53 +0000 | [diff] [blame] | 302 | #define N_RELOC(x) ((x) / sizeof(struct drm_i915_gem_relocation_entry)) |
| 303 | struct drm_i915_gem_relocation_entry stack_reloc[N_RELOC(512)]; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 304 | struct drm_i915_gem_relocation_entry __user *user_relocs; |
Chris Wilson | 6fe4f14 | 2011-01-10 17:35:37 +0000 | [diff] [blame] | 305 | struct drm_i915_gem_exec_object2 *entry = obj->exec_entry; |
Chris Wilson | 1d83f44 | 2012-03-24 20:12:53 +0000 | [diff] [blame] | 306 | int remain, ret; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 307 | |
Ville Syrjälä | 2bb4629 | 2013-02-22 16:12:51 +0200 | [diff] [blame] | 308 | user_relocs = to_user_ptr(entry->relocs_ptr); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 309 | |
Chris Wilson | 1d83f44 | 2012-03-24 20:12:53 +0000 | [diff] [blame] | 310 | remain = entry->relocation_count; |
| 311 | while (remain) { |
| 312 | struct drm_i915_gem_relocation_entry *r = stack_reloc; |
| 313 | int count = remain; |
| 314 | if (count > ARRAY_SIZE(stack_reloc)) |
| 315 | count = ARRAY_SIZE(stack_reloc); |
| 316 | remain -= count; |
| 317 | |
| 318 | if (__copy_from_user_inatomic(r, user_relocs, count*sizeof(r[0]))) |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 319 | return -EFAULT; |
| 320 | |
Chris Wilson | 1d83f44 | 2012-03-24 20:12:53 +0000 | [diff] [blame] | 321 | do { |
| 322 | u64 offset = r->presumed_offset; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 323 | |
Chris Wilson | 1d83f44 | 2012-03-24 20:12:53 +0000 | [diff] [blame] | 324 | ret = i915_gem_execbuffer_relocate_entry(obj, eb, r); |
| 325 | if (ret) |
| 326 | return ret; |
| 327 | |
| 328 | if (r->presumed_offset != offset && |
| 329 | __copy_to_user_inatomic(&user_relocs->presumed_offset, |
| 330 | &r->presumed_offset, |
| 331 | sizeof(r->presumed_offset))) { |
| 332 | return -EFAULT; |
| 333 | } |
| 334 | |
| 335 | user_relocs++; |
| 336 | r++; |
| 337 | } while (--count); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 338 | } |
| 339 | |
| 340 | return 0; |
Chris Wilson | 1d83f44 | 2012-03-24 20:12:53 +0000 | [diff] [blame] | 341 | #undef N_RELOC |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 342 | } |
| 343 | |
| 344 | static int |
| 345 | i915_gem_execbuffer_relocate_object_slow(struct drm_i915_gem_object *obj, |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 346 | struct eb_objects *eb, |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 347 | struct drm_i915_gem_relocation_entry *relocs) |
| 348 | { |
Chris Wilson | 6fe4f14 | 2011-01-10 17:35:37 +0000 | [diff] [blame] | 349 | const struct drm_i915_gem_exec_object2 *entry = obj->exec_entry; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 350 | int i, ret; |
| 351 | |
| 352 | for (i = 0; i < entry->relocation_count; i++) { |
Chris Wilson | 6fe4f14 | 2011-01-10 17:35:37 +0000 | [diff] [blame] | 353 | ret = i915_gem_execbuffer_relocate_entry(obj, eb, &relocs[i]); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 354 | if (ret) |
| 355 | return ret; |
| 356 | } |
| 357 | |
| 358 | return 0; |
| 359 | } |
| 360 | |
| 361 | static int |
Ben Widawsky | 41fda59 | 2013-03-13 17:21:06 -0700 | [diff] [blame] | 362 | i915_gem_execbuffer_relocate(struct eb_objects *eb) |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 363 | { |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 364 | struct drm_i915_gem_object *obj; |
Chris Wilson | d4aeee7 | 2011-03-14 15:11:24 +0000 | [diff] [blame] | 365 | int ret = 0; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 366 | |
Chris Wilson | d4aeee7 | 2011-03-14 15:11:24 +0000 | [diff] [blame] | 367 | /* This is the fast path and we cannot handle a pagefault whilst |
| 368 | * holding the struct mutex lest the user pass in the relocations |
| 369 | * contained within a mmaped bo. For in such a case we, the page |
| 370 | * fault handler would call i915_gem_fault() and we would try to |
| 371 | * acquire the struct mutex again. Obviously this is bad and so |
| 372 | * lockdep complains vehemently. |
| 373 | */ |
| 374 | pagefault_disable(); |
Chris Wilson | bcffc3f | 2013-01-08 10:53:15 +0000 | [diff] [blame] | 375 | list_for_each_entry(obj, &eb->objects, exec_list) { |
Chris Wilson | 6fe4f14 | 2011-01-10 17:35:37 +0000 | [diff] [blame] | 376 | ret = i915_gem_execbuffer_relocate_object(obj, eb); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 377 | if (ret) |
Chris Wilson | d4aeee7 | 2011-03-14 15:11:24 +0000 | [diff] [blame] | 378 | break; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 379 | } |
Chris Wilson | d4aeee7 | 2011-03-14 15:11:24 +0000 | [diff] [blame] | 380 | pagefault_enable(); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 381 | |
Chris Wilson | d4aeee7 | 2011-03-14 15:11:24 +0000 | [diff] [blame] | 382 | return ret; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 383 | } |
| 384 | |
Chris Wilson | 7788a76 | 2012-08-24 19:18:18 +0100 | [diff] [blame] | 385 | #define __EXEC_OBJECT_HAS_PIN (1<<31) |
| 386 | #define __EXEC_OBJECT_HAS_FENCE (1<<30) |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 387 | |
| 388 | static int |
Chris Wilson | dabdfe0 | 2012-03-26 10:10:27 +0200 | [diff] [blame] | 389 | need_reloc_mappable(struct drm_i915_gem_object *obj) |
| 390 | { |
| 391 | struct drm_i915_gem_exec_object2 *entry = obj->exec_entry; |
| 392 | return entry->relocation_count && !use_cpu_reloc(obj); |
| 393 | } |
| 394 | |
| 395 | static int |
Chris Wilson | 7788a76 | 2012-08-24 19:18:18 +0100 | [diff] [blame] | 396 | i915_gem_execbuffer_reserve_object(struct drm_i915_gem_object *obj, |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 397 | struct intel_ring_buffer *ring, |
| 398 | bool *need_reloc) |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 399 | { |
Chris Wilson | 7788a76 | 2012-08-24 19:18:18 +0100 | [diff] [blame] | 400 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 401 | struct drm_i915_gem_exec_object2 *entry = obj->exec_entry; |
| 402 | bool has_fenced_gpu_access = INTEL_INFO(ring->dev)->gen < 4; |
| 403 | bool need_fence, need_mappable; |
| 404 | int ret; |
| 405 | |
| 406 | need_fence = |
| 407 | has_fenced_gpu_access && |
| 408 | entry->flags & EXEC_OBJECT_NEEDS_FENCE && |
| 409 | obj->tiling_mode != I915_TILING_NONE; |
Chris Wilson | dabdfe0 | 2012-03-26 10:10:27 +0200 | [diff] [blame] | 410 | need_mappable = need_fence || need_reloc_mappable(obj); |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 411 | |
Chris Wilson | 86a1ee2 | 2012-08-11 15:41:04 +0100 | [diff] [blame] | 412 | ret = i915_gem_object_pin(obj, entry->alignment, need_mappable, false); |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 413 | if (ret) |
| 414 | return ret; |
| 415 | |
Chris Wilson | 7788a76 | 2012-08-24 19:18:18 +0100 | [diff] [blame] | 416 | entry->flags |= __EXEC_OBJECT_HAS_PIN; |
| 417 | |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 418 | if (has_fenced_gpu_access) { |
| 419 | if (entry->flags & EXEC_OBJECT_NEEDS_FENCE) { |
Chris Wilson | 06d9813 | 2012-04-17 15:31:24 +0100 | [diff] [blame] | 420 | ret = i915_gem_object_get_fence(obj); |
Chris Wilson | 9a5a53b | 2012-03-22 15:10:00 +0000 | [diff] [blame] | 421 | if (ret) |
Chris Wilson | 7788a76 | 2012-08-24 19:18:18 +0100 | [diff] [blame] | 422 | return ret; |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 423 | |
Chris Wilson | 9a5a53b | 2012-03-22 15:10:00 +0000 | [diff] [blame] | 424 | if (i915_gem_object_pin_fence(obj)) |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 425 | entry->flags |= __EXEC_OBJECT_HAS_FENCE; |
Chris Wilson | 9a5a53b | 2012-03-22 15:10:00 +0000 | [diff] [blame] | 426 | |
Chris Wilson | 7dd4906 | 2012-03-21 10:48:18 +0000 | [diff] [blame] | 427 | obj->pending_fenced_gpu_access = true; |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 428 | } |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 429 | } |
| 430 | |
Chris Wilson | 7788a76 | 2012-08-24 19:18:18 +0100 | [diff] [blame] | 431 | /* Ensure ppgtt mapping exists if needed */ |
| 432 | if (dev_priv->mm.aliasing_ppgtt && !obj->has_aliasing_ppgtt_mapping) { |
| 433 | i915_ppgtt_bind_object(dev_priv->mm.aliasing_ppgtt, |
| 434 | obj, obj->cache_level); |
| 435 | |
| 436 | obj->has_aliasing_ppgtt_mapping = 1; |
| 437 | } |
| 438 | |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 439 | if (entry->offset != obj->gtt_offset) { |
| 440 | entry->offset = obj->gtt_offset; |
| 441 | *need_reloc = true; |
| 442 | } |
| 443 | |
| 444 | if (entry->flags & EXEC_OBJECT_WRITE) { |
| 445 | obj->base.pending_read_domains = I915_GEM_DOMAIN_RENDER; |
| 446 | obj->base.pending_write_domain = I915_GEM_DOMAIN_RENDER; |
| 447 | } |
| 448 | |
| 449 | if (entry->flags & EXEC_OBJECT_NEEDS_GTT && |
| 450 | !obj->has_global_gtt_mapping) |
| 451 | i915_gem_gtt_bind_object(obj, obj->cache_level); |
| 452 | |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 453 | return 0; |
Chris Wilson | 7788a76 | 2012-08-24 19:18:18 +0100 | [diff] [blame] | 454 | } |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 455 | |
Chris Wilson | 7788a76 | 2012-08-24 19:18:18 +0100 | [diff] [blame] | 456 | static void |
| 457 | i915_gem_execbuffer_unreserve_object(struct drm_i915_gem_object *obj) |
| 458 | { |
| 459 | struct drm_i915_gem_exec_object2 *entry; |
| 460 | |
| 461 | if (!obj->gtt_space) |
| 462 | return; |
| 463 | |
| 464 | entry = obj->exec_entry; |
| 465 | |
| 466 | if (entry->flags & __EXEC_OBJECT_HAS_FENCE) |
| 467 | i915_gem_object_unpin_fence(obj); |
| 468 | |
| 469 | if (entry->flags & __EXEC_OBJECT_HAS_PIN) |
| 470 | i915_gem_object_unpin(obj); |
| 471 | |
| 472 | entry->flags &= ~(__EXEC_OBJECT_HAS_FENCE | __EXEC_OBJECT_HAS_PIN); |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 473 | } |
| 474 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 475 | static int |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 476 | i915_gem_execbuffer_reserve(struct intel_ring_buffer *ring, |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 477 | struct list_head *objects, |
| 478 | bool *need_relocs) |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 479 | { |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 480 | struct drm_i915_gem_object *obj; |
Chris Wilson | 6fe4f14 | 2011-01-10 17:35:37 +0000 | [diff] [blame] | 481 | struct list_head ordered_objects; |
Chris Wilson | 7788a76 | 2012-08-24 19:18:18 +0100 | [diff] [blame] | 482 | bool has_fenced_gpu_access = INTEL_INFO(ring->dev)->gen < 4; |
| 483 | int retry; |
Chris Wilson | 6fe4f14 | 2011-01-10 17:35:37 +0000 | [diff] [blame] | 484 | |
| 485 | INIT_LIST_HEAD(&ordered_objects); |
| 486 | while (!list_empty(objects)) { |
| 487 | struct drm_i915_gem_exec_object2 *entry; |
| 488 | bool need_fence, need_mappable; |
| 489 | |
| 490 | obj = list_first_entry(objects, |
| 491 | struct drm_i915_gem_object, |
| 492 | exec_list); |
| 493 | entry = obj->exec_entry; |
| 494 | |
| 495 | need_fence = |
| 496 | has_fenced_gpu_access && |
| 497 | entry->flags & EXEC_OBJECT_NEEDS_FENCE && |
| 498 | obj->tiling_mode != I915_TILING_NONE; |
Chris Wilson | dabdfe0 | 2012-03-26 10:10:27 +0200 | [diff] [blame] | 499 | need_mappable = need_fence || need_reloc_mappable(obj); |
Chris Wilson | 6fe4f14 | 2011-01-10 17:35:37 +0000 | [diff] [blame] | 500 | |
| 501 | if (need_mappable) |
| 502 | list_move(&obj->exec_list, &ordered_objects); |
| 503 | else |
| 504 | list_move_tail(&obj->exec_list, &ordered_objects); |
Chris Wilson | 595dad7 | 2011-01-13 11:03:48 +0000 | [diff] [blame] | 505 | |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 506 | obj->base.pending_read_domains = I915_GEM_GPU_DOMAINS & ~I915_GEM_DOMAIN_COMMAND; |
Chris Wilson | 595dad7 | 2011-01-13 11:03:48 +0000 | [diff] [blame] | 507 | obj->base.pending_write_domain = 0; |
Chris Wilson | 016fd0c | 2012-07-20 12:41:07 +0100 | [diff] [blame] | 508 | obj->pending_fenced_gpu_access = false; |
Chris Wilson | 6fe4f14 | 2011-01-10 17:35:37 +0000 | [diff] [blame] | 509 | } |
| 510 | list_splice(&ordered_objects, objects); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 511 | |
| 512 | /* Attempt to pin all of the buffers into the GTT. |
| 513 | * This is done in 3 phases: |
| 514 | * |
| 515 | * 1a. Unbind all objects that do not match the GTT constraints for |
| 516 | * the execbuffer (fenceable, mappable, alignment etc). |
| 517 | * 1b. Increment pin count for already bound objects. |
| 518 | * 2. Bind new objects. |
| 519 | * 3. Decrement pin count. |
| 520 | * |
Chris Wilson | 7788a76 | 2012-08-24 19:18:18 +0100 | [diff] [blame] | 521 | * This avoid unnecessary unbinding of later objects in order to make |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 522 | * room for the earlier objects *unless* we need to defragment. |
| 523 | */ |
| 524 | retry = 0; |
| 525 | do { |
Chris Wilson | 7788a76 | 2012-08-24 19:18:18 +0100 | [diff] [blame] | 526 | int ret = 0; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 527 | |
| 528 | /* Unbind any ill-fitting objects or pin. */ |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 529 | list_for_each_entry(obj, objects, exec_list) { |
Chris Wilson | 6fe4f14 | 2011-01-10 17:35:37 +0000 | [diff] [blame] | 530 | struct drm_i915_gem_exec_object2 *entry = obj->exec_entry; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 531 | bool need_fence, need_mappable; |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 532 | |
Chris Wilson | 6fe4f14 | 2011-01-10 17:35:37 +0000 | [diff] [blame] | 533 | if (!obj->gtt_space) |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 534 | continue; |
| 535 | |
| 536 | need_fence = |
Chris Wilson | 9b3826b | 2010-12-05 17:11:54 +0000 | [diff] [blame] | 537 | has_fenced_gpu_access && |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 538 | entry->flags & EXEC_OBJECT_NEEDS_FENCE && |
| 539 | obj->tiling_mode != I915_TILING_NONE; |
Chris Wilson | dabdfe0 | 2012-03-26 10:10:27 +0200 | [diff] [blame] | 540 | need_mappable = need_fence || need_reloc_mappable(obj); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 541 | |
| 542 | if ((entry->alignment && obj->gtt_offset & (entry->alignment - 1)) || |
| 543 | (need_mappable && !obj->map_and_fenceable)) |
| 544 | ret = i915_gem_object_unbind(obj); |
| 545 | else |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 546 | ret = i915_gem_execbuffer_reserve_object(obj, ring, need_relocs); |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 547 | if (ret) |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 548 | goto err; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 549 | } |
| 550 | |
| 551 | /* Bind fresh objects */ |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 552 | list_for_each_entry(obj, objects, exec_list) { |
Chris Wilson | 1690e1e | 2011-12-14 13:57:08 +0100 | [diff] [blame] | 553 | if (obj->gtt_space) |
| 554 | continue; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 555 | |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 556 | ret = i915_gem_execbuffer_reserve_object(obj, ring, need_relocs); |
Chris Wilson | 7788a76 | 2012-08-24 19:18:18 +0100 | [diff] [blame] | 557 | if (ret) |
| 558 | goto err; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 559 | } |
| 560 | |
Chris Wilson | 7788a76 | 2012-08-24 19:18:18 +0100 | [diff] [blame] | 561 | err: /* Decrement pin count for bound objects */ |
| 562 | list_for_each_entry(obj, objects, exec_list) |
| 563 | i915_gem_execbuffer_unreserve_object(obj); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 564 | |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 565 | if (ret != -ENOSPC || retry++) |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 566 | return ret; |
| 567 | |
Chris Wilson | 6c085a7 | 2012-08-20 11:40:46 +0200 | [diff] [blame] | 568 | ret = i915_gem_evict_everything(ring->dev); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 569 | if (ret) |
| 570 | return ret; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 571 | } while (1); |
| 572 | } |
| 573 | |
| 574 | static int |
| 575 | i915_gem_execbuffer_relocate_slow(struct drm_device *dev, |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 576 | struct drm_i915_gem_execbuffer2 *args, |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 577 | struct drm_file *file, |
Chris Wilson | d9e86c0 | 2010-11-10 16:40:20 +0000 | [diff] [blame] | 578 | struct intel_ring_buffer *ring, |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 579 | struct eb_objects *eb, |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 580 | struct drm_i915_gem_exec_object2 *exec) |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 581 | { |
| 582 | struct drm_i915_gem_relocation_entry *reloc; |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 583 | struct drm_i915_gem_object *obj; |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 584 | bool need_relocs; |
Chris Wilson | dd6864a | 2011-01-12 23:49:13 +0000 | [diff] [blame] | 585 | int *reloc_offset; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 586 | int i, total, ret; |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 587 | int count = args->buffer_count; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 588 | |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 589 | /* We may process another execbuffer during the unlock... */ |
Chris Wilson | bcffc3f | 2013-01-08 10:53:15 +0000 | [diff] [blame] | 590 | while (!list_empty(&eb->objects)) { |
| 591 | obj = list_first_entry(&eb->objects, |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 592 | struct drm_i915_gem_object, |
| 593 | exec_list); |
| 594 | list_del_init(&obj->exec_list); |
| 595 | drm_gem_object_unreference(&obj->base); |
| 596 | } |
| 597 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 598 | mutex_unlock(&dev->struct_mutex); |
| 599 | |
| 600 | total = 0; |
| 601 | for (i = 0; i < count; i++) |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 602 | total += exec[i].relocation_count; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 603 | |
Chris Wilson | dd6864a | 2011-01-12 23:49:13 +0000 | [diff] [blame] | 604 | reloc_offset = drm_malloc_ab(count, sizeof(*reloc_offset)); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 605 | reloc = drm_malloc_ab(total, sizeof(*reloc)); |
Chris Wilson | dd6864a | 2011-01-12 23:49:13 +0000 | [diff] [blame] | 606 | if (reloc == NULL || reloc_offset == NULL) { |
| 607 | drm_free_large(reloc); |
| 608 | drm_free_large(reloc_offset); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 609 | mutex_lock(&dev->struct_mutex); |
| 610 | return -ENOMEM; |
| 611 | } |
| 612 | |
| 613 | total = 0; |
| 614 | for (i = 0; i < count; i++) { |
| 615 | struct drm_i915_gem_relocation_entry __user *user_relocs; |
Chris Wilson | 262b6d3 | 2013-01-15 16:17:54 +0000 | [diff] [blame] | 616 | u64 invalid_offset = (u64)-1; |
| 617 | int j; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 618 | |
Ville Syrjälä | 2bb4629 | 2013-02-22 16:12:51 +0200 | [diff] [blame] | 619 | user_relocs = to_user_ptr(exec[i].relocs_ptr); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 620 | |
| 621 | if (copy_from_user(reloc+total, user_relocs, |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 622 | exec[i].relocation_count * sizeof(*reloc))) { |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 623 | ret = -EFAULT; |
| 624 | mutex_lock(&dev->struct_mutex); |
| 625 | goto err; |
| 626 | } |
| 627 | |
Chris Wilson | 262b6d3 | 2013-01-15 16:17:54 +0000 | [diff] [blame] | 628 | /* As we do not update the known relocation offsets after |
| 629 | * relocating (due to the complexities in lock handling), |
| 630 | * we need to mark them as invalid now so that we force the |
| 631 | * relocation processing next time. Just in case the target |
| 632 | * object is evicted and then rebound into its old |
| 633 | * presumed_offset before the next execbuffer - if that |
| 634 | * happened we would make the mistake of assuming that the |
| 635 | * relocations were valid. |
| 636 | */ |
| 637 | for (j = 0; j < exec[i].relocation_count; j++) { |
| 638 | if (copy_to_user(&user_relocs[j].presumed_offset, |
| 639 | &invalid_offset, |
| 640 | sizeof(invalid_offset))) { |
| 641 | ret = -EFAULT; |
| 642 | mutex_lock(&dev->struct_mutex); |
| 643 | goto err; |
| 644 | } |
| 645 | } |
| 646 | |
Chris Wilson | dd6864a | 2011-01-12 23:49:13 +0000 | [diff] [blame] | 647 | reloc_offset[i] = total; |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 648 | total += exec[i].relocation_count; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 649 | } |
| 650 | |
| 651 | ret = i915_mutex_lock_interruptible(dev); |
| 652 | if (ret) { |
| 653 | mutex_lock(&dev->struct_mutex); |
| 654 | goto err; |
| 655 | } |
| 656 | |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 657 | /* reacquire the objects */ |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 658 | eb_reset(eb); |
Chris Wilson | eef90cc | 2013-01-08 10:53:17 +0000 | [diff] [blame] | 659 | ret = eb_lookup_objects(eb, exec, args, file); |
Chris Wilson | 3b96eff | 2013-01-08 10:53:14 +0000 | [diff] [blame] | 660 | if (ret) |
| 661 | goto err; |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 662 | |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 663 | need_relocs = (args->flags & I915_EXEC_NO_RELOC) == 0; |
Ben Widawsky | cf14496 | 2013-03-13 17:21:05 -0700 | [diff] [blame] | 664 | ret = i915_gem_execbuffer_reserve(ring, &eb->objects, &need_relocs); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 665 | if (ret) |
| 666 | goto err; |
| 667 | |
Chris Wilson | bcffc3f | 2013-01-08 10:53:15 +0000 | [diff] [blame] | 668 | list_for_each_entry(obj, &eb->objects, exec_list) { |
Chris Wilson | dd6864a | 2011-01-12 23:49:13 +0000 | [diff] [blame] | 669 | int offset = obj->exec_entry - exec; |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 670 | ret = i915_gem_execbuffer_relocate_object_slow(obj, eb, |
Chris Wilson | dd6864a | 2011-01-12 23:49:13 +0000 | [diff] [blame] | 671 | reloc + reloc_offset[offset]); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 672 | if (ret) |
| 673 | goto err; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 674 | } |
| 675 | |
| 676 | /* Leave the user relocations as are, this is the painfully slow path, |
| 677 | * and we want to avoid the complication of dropping the lock whilst |
| 678 | * having buffers reserved in the aperture and so causing spurious |
| 679 | * ENOSPC for random operations. |
| 680 | */ |
| 681 | |
| 682 | err: |
| 683 | drm_free_large(reloc); |
Chris Wilson | dd6864a | 2011-01-12 23:49:13 +0000 | [diff] [blame] | 684 | drm_free_large(reloc_offset); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 685 | return ret; |
| 686 | } |
| 687 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 688 | static int |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 689 | i915_gem_execbuffer_move_to_gpu(struct intel_ring_buffer *ring, |
| 690 | struct list_head *objects) |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 691 | { |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 692 | struct drm_i915_gem_object *obj; |
Daniel Vetter | 6ac42f4 | 2012-07-21 12:25:01 +0200 | [diff] [blame] | 693 | uint32_t flush_domains = 0; |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 694 | int ret; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 695 | |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 696 | list_for_each_entry(obj, objects, exec_list) { |
Ben Widawsky | 2911a35 | 2012-04-05 14:47:36 -0700 | [diff] [blame] | 697 | ret = i915_gem_object_sync(obj, ring); |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 698 | if (ret) |
| 699 | return ret; |
Daniel Vetter | 6ac42f4 | 2012-07-21 12:25:01 +0200 | [diff] [blame] | 700 | |
| 701 | if (obj->base.write_domain & I915_GEM_DOMAIN_CPU) |
| 702 | i915_gem_clflush_object(obj); |
| 703 | |
Daniel Vetter | 6ac42f4 | 2012-07-21 12:25:01 +0200 | [diff] [blame] | 704 | flush_domains |= obj->base.write_domain; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 705 | } |
| 706 | |
Daniel Vetter | 6ac42f4 | 2012-07-21 12:25:01 +0200 | [diff] [blame] | 707 | if (flush_domains & I915_GEM_DOMAIN_CPU) |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 708 | i915_gem_chipset_flush(ring->dev); |
Daniel Vetter | 6ac42f4 | 2012-07-21 12:25:01 +0200 | [diff] [blame] | 709 | |
| 710 | if (flush_domains & I915_GEM_DOMAIN_GTT) |
| 711 | wmb(); |
| 712 | |
Chris Wilson | 09cf7c9 | 2012-07-13 14:14:08 +0100 | [diff] [blame] | 713 | /* Unconditionally invalidate gpu caches and ensure that we do flush |
| 714 | * any residual writes from the previous batch. |
| 715 | */ |
Chris Wilson | a7b9761 | 2012-07-20 12:41:08 +0100 | [diff] [blame] | 716 | return intel_ring_invalidate_all_caches(ring); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 717 | } |
| 718 | |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 719 | static bool |
| 720 | i915_gem_check_execbuffer(struct drm_i915_gem_execbuffer2 *exec) |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 721 | { |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 722 | if (exec->flags & __I915_EXEC_UNKNOWN_FLAGS) |
| 723 | return false; |
| 724 | |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 725 | return ((exec->batch_start_offset | exec->batch_len) & 0x7) == 0; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 726 | } |
| 727 | |
| 728 | static int |
| 729 | validate_exec_list(struct drm_i915_gem_exec_object2 *exec, |
| 730 | int count) |
| 731 | { |
| 732 | int i; |
| 733 | |
| 734 | for (i = 0; i < count; i++) { |
Ville Syrjälä | 2bb4629 | 2013-02-22 16:12:51 +0200 | [diff] [blame] | 735 | char __user *ptr = to_user_ptr(exec[i].relocs_ptr); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 736 | int length; /* limited by fault_in_pages_readable() */ |
| 737 | |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 738 | if (exec[i].flags & __EXEC_OBJECT_UNKNOWN_FLAGS) |
| 739 | return -EINVAL; |
| 740 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 741 | /* First check for malicious input causing overflow */ |
| 742 | if (exec[i].relocation_count > |
| 743 | INT_MAX / sizeof(struct drm_i915_gem_relocation_entry)) |
| 744 | return -EINVAL; |
| 745 | |
| 746 | length = exec[i].relocation_count * |
| 747 | sizeof(struct drm_i915_gem_relocation_entry); |
Kees Cook | 3058753 | 2013-03-11 14:37:35 -0700 | [diff] [blame] | 748 | /* |
| 749 | * We must check that the entire relocation array is safe |
| 750 | * to read, but since we may need to update the presumed |
| 751 | * offsets during execution, check for full write access. |
| 752 | */ |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 753 | if (!access_ok(VERIFY_WRITE, ptr, length)) |
| 754 | return -EFAULT; |
| 755 | |
Daniel Vetter | f56f821 | 2012-03-25 19:47:41 +0200 | [diff] [blame] | 756 | if (fault_in_multipages_readable(ptr, length)) |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 757 | return -EFAULT; |
| 758 | } |
| 759 | |
| 760 | return 0; |
| 761 | } |
| 762 | |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 763 | static void |
| 764 | i915_gem_execbuffer_move_to_active(struct list_head *objects, |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 765 | struct intel_ring_buffer *ring) |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 766 | { |
| 767 | struct drm_i915_gem_object *obj; |
| 768 | |
| 769 | list_for_each_entry(obj, objects, exec_list) { |
Chris Wilson | 69c2fc8 | 2012-07-20 12:41:03 +0100 | [diff] [blame] | 770 | u32 old_read = obj->base.read_domains; |
| 771 | u32 old_write = obj->base.write_domain; |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 772 | |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 773 | obj->base.write_domain = obj->base.pending_write_domain; |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 774 | if (obj->base.write_domain == 0) |
| 775 | obj->base.pending_read_domains |= obj->base.read_domains; |
| 776 | obj->base.read_domains = obj->base.pending_read_domains; |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 777 | obj->fenced_gpu_access = obj->pending_fenced_gpu_access; |
| 778 | |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 779 | i915_gem_object_move_to_active(obj, ring); |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 780 | if (obj->base.write_domain) { |
| 781 | obj->dirty = 1; |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 782 | obj->last_write_seqno = intel_ring_get_seqno(ring); |
Chris Wilson | acb87df | 2012-05-03 15:47:57 +0100 | [diff] [blame] | 783 | if (obj->pin_count) /* check for potential scanout */ |
Chris Wilson | f047e39 | 2012-07-21 12:31:41 +0100 | [diff] [blame] | 784 | intel_mark_fb_busy(obj); |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 785 | } |
| 786 | |
Chris Wilson | db53a30 | 2011-02-03 11:57:46 +0000 | [diff] [blame] | 787 | trace_i915_gem_object_change_domain(obj, old_read, old_write); |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 788 | } |
| 789 | } |
| 790 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 791 | static void |
| 792 | i915_gem_execbuffer_retire_commands(struct drm_device *dev, |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 793 | struct drm_file *file, |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 794 | struct intel_ring_buffer *ring) |
| 795 | { |
Daniel Vetter | cc889e0 | 2012-06-13 20:45:19 +0200 | [diff] [blame] | 796 | /* Unconditionally force add_request to emit a full flush. */ |
| 797 | ring->gpu_caches_dirty = true; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 798 | |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 799 | /* Add a breadcrumb for the completion of the batch buffer */ |
Chris Wilson | 3bb73ab | 2012-07-20 12:40:59 +0100 | [diff] [blame] | 800 | (void)i915_add_request(ring, file, NULL); |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 801 | } |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 802 | |
| 803 | static int |
Eric Anholt | ae662d3 | 2012-01-03 09:23:29 -0800 | [diff] [blame] | 804 | i915_reset_gen7_sol_offsets(struct drm_device *dev, |
| 805 | struct intel_ring_buffer *ring) |
| 806 | { |
| 807 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 808 | int ret, i; |
| 809 | |
| 810 | if (!IS_GEN7(dev) || ring != &dev_priv->ring[RCS]) |
| 811 | return 0; |
| 812 | |
| 813 | ret = intel_ring_begin(ring, 4 * 3); |
| 814 | if (ret) |
| 815 | return ret; |
| 816 | |
| 817 | for (i = 0; i < 4; i++) { |
| 818 | intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1)); |
| 819 | intel_ring_emit(ring, GEN7_SO_WRITE_OFFSET(i)); |
| 820 | intel_ring_emit(ring, 0); |
| 821 | } |
| 822 | |
| 823 | intel_ring_advance(ring); |
| 824 | |
| 825 | return 0; |
| 826 | } |
| 827 | |
| 828 | static int |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 829 | i915_gem_do_execbuffer(struct drm_device *dev, void *data, |
| 830 | struct drm_file *file, |
| 831 | struct drm_i915_gem_execbuffer2 *args, |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 832 | struct drm_i915_gem_exec_object2 *exec) |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 833 | { |
| 834 | drm_i915_private_t *dev_priv = dev->dev_private; |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 835 | struct eb_objects *eb; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 836 | struct drm_i915_gem_object *batch_obj; |
| 837 | struct drm_clip_rect *cliprects = NULL; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 838 | struct intel_ring_buffer *ring; |
Ben Widawsky | 6e0a69d | 2012-06-04 14:42:55 -0700 | [diff] [blame] | 839 | u32 ctx_id = i915_execbuffer2_get_context_id(*args); |
Chris Wilson | c4e7a41 | 2010-11-30 14:10:25 +0000 | [diff] [blame] | 840 | u32 exec_start, exec_len; |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 841 | u32 mask, flags; |
Chris Wilson | 72bfa19 | 2010-12-19 11:42:05 +0000 | [diff] [blame] | 842 | int ret, mode, i; |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 843 | bool need_relocs; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 844 | |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 845 | if (!i915_gem_check_execbuffer(args)) |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 846 | return -EINVAL; |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 847 | |
| 848 | ret = validate_exec_list(exec, args->buffer_count); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 849 | if (ret) |
| 850 | return ret; |
| 851 | |
Chris Wilson | d7d4eed | 2012-10-17 12:09:54 +0100 | [diff] [blame] | 852 | flags = 0; |
| 853 | if (args->flags & I915_EXEC_SECURE) { |
| 854 | if (!file->is_master || !capable(CAP_SYS_ADMIN)) |
| 855 | return -EPERM; |
| 856 | |
| 857 | flags |= I915_DISPATCH_SECURE; |
| 858 | } |
Daniel Vetter | b45305f | 2012-12-17 16:21:27 +0100 | [diff] [blame] | 859 | if (args->flags & I915_EXEC_IS_PINNED) |
| 860 | flags |= I915_DISPATCH_PINNED; |
Chris Wilson | d7d4eed | 2012-10-17 12:09:54 +0100 | [diff] [blame] | 861 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 862 | switch (args->flags & I915_EXEC_RING_MASK) { |
| 863 | case I915_EXEC_DEFAULT: |
| 864 | case I915_EXEC_RENDER: |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 865 | ring = &dev_priv->ring[RCS]; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 866 | break; |
| 867 | case I915_EXEC_BSD: |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 868 | ring = &dev_priv->ring[VCS]; |
Ben Widawsky | 6e0a69d | 2012-06-04 14:42:55 -0700 | [diff] [blame] | 869 | if (ctx_id != 0) { |
| 870 | DRM_DEBUG("Ring %s doesn't support contexts\n", |
| 871 | ring->name); |
| 872 | return -EPERM; |
| 873 | } |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 874 | break; |
| 875 | case I915_EXEC_BLT: |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 876 | ring = &dev_priv->ring[BCS]; |
Ben Widawsky | 6e0a69d | 2012-06-04 14:42:55 -0700 | [diff] [blame] | 877 | if (ctx_id != 0) { |
| 878 | DRM_DEBUG("Ring %s doesn't support contexts\n", |
| 879 | ring->name); |
| 880 | return -EPERM; |
| 881 | } |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 882 | break; |
| 883 | default: |
Daniel Vetter | ff24019 | 2012-01-31 21:08:14 +0100 | [diff] [blame] | 884 | DRM_DEBUG("execbuf with unknown ring: %d\n", |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 885 | (int)(args->flags & I915_EXEC_RING_MASK)); |
| 886 | return -EINVAL; |
| 887 | } |
Chris Wilson | a15817c | 2012-05-11 14:29:31 +0100 | [diff] [blame] | 888 | if (!intel_ring_initialized(ring)) { |
| 889 | DRM_DEBUG("execbuf with invalid ring: %d\n", |
| 890 | (int)(args->flags & I915_EXEC_RING_MASK)); |
| 891 | return -EINVAL; |
| 892 | } |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 893 | |
Chris Wilson | 72bfa19 | 2010-12-19 11:42:05 +0000 | [diff] [blame] | 894 | mode = args->flags & I915_EXEC_CONSTANTS_MASK; |
Ben Widawsky | 84f9f93 | 2011-12-12 19:21:58 -0800 | [diff] [blame] | 895 | mask = I915_EXEC_CONSTANTS_MASK; |
Chris Wilson | 72bfa19 | 2010-12-19 11:42:05 +0000 | [diff] [blame] | 896 | switch (mode) { |
| 897 | case I915_EXEC_CONSTANTS_REL_GENERAL: |
| 898 | case I915_EXEC_CONSTANTS_ABSOLUTE: |
| 899 | case I915_EXEC_CONSTANTS_REL_SURFACE: |
| 900 | if (ring == &dev_priv->ring[RCS] && |
| 901 | mode != dev_priv->relative_constants_mode) { |
| 902 | if (INTEL_INFO(dev)->gen < 4) |
| 903 | return -EINVAL; |
| 904 | |
| 905 | if (INTEL_INFO(dev)->gen > 5 && |
| 906 | mode == I915_EXEC_CONSTANTS_REL_SURFACE) |
| 907 | return -EINVAL; |
Ben Widawsky | 84f9f93 | 2011-12-12 19:21:58 -0800 | [diff] [blame] | 908 | |
| 909 | /* The HW changed the meaning on this bit on gen6 */ |
| 910 | if (INTEL_INFO(dev)->gen >= 6) |
| 911 | mask &= ~I915_EXEC_CONSTANTS_REL_SURFACE; |
Chris Wilson | 72bfa19 | 2010-12-19 11:42:05 +0000 | [diff] [blame] | 912 | } |
| 913 | break; |
| 914 | default: |
Daniel Vetter | ff24019 | 2012-01-31 21:08:14 +0100 | [diff] [blame] | 915 | DRM_DEBUG("execbuf with unknown constants: %d\n", mode); |
Chris Wilson | 72bfa19 | 2010-12-19 11:42:05 +0000 | [diff] [blame] | 916 | return -EINVAL; |
| 917 | } |
| 918 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 919 | if (args->buffer_count < 1) { |
Daniel Vetter | ff24019 | 2012-01-31 21:08:14 +0100 | [diff] [blame] | 920 | DRM_DEBUG("execbuf with %d buffers\n", args->buffer_count); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 921 | return -EINVAL; |
| 922 | } |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 923 | |
| 924 | if (args->num_cliprects != 0) { |
Chris Wilson | 1ec14ad | 2010-12-04 11:30:53 +0000 | [diff] [blame] | 925 | if (ring != &dev_priv->ring[RCS]) { |
Daniel Vetter | ff24019 | 2012-01-31 21:08:14 +0100 | [diff] [blame] | 926 | DRM_DEBUG("clip rectangles are only valid with the render ring\n"); |
Chris Wilson | c4e7a41 | 2010-11-30 14:10:25 +0000 | [diff] [blame] | 927 | return -EINVAL; |
| 928 | } |
| 929 | |
Daniel Vetter | 6ebebc9 | 2012-04-26 23:28:11 +0200 | [diff] [blame] | 930 | if (INTEL_INFO(dev)->gen >= 5) { |
| 931 | DRM_DEBUG("clip rectangles are only valid on pre-gen5\n"); |
| 932 | return -EINVAL; |
| 933 | } |
| 934 | |
Xi Wang | 44afb3a | 2012-04-23 04:06:42 -0400 | [diff] [blame] | 935 | if (args->num_cliprects > UINT_MAX / sizeof(*cliprects)) { |
| 936 | DRM_DEBUG("execbuf with %u cliprects\n", |
| 937 | args->num_cliprects); |
| 938 | return -EINVAL; |
| 939 | } |
Daniel Vetter | 5e13a0c | 2012-05-08 13:39:59 +0200 | [diff] [blame] | 940 | |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 941 | cliprects = kmalloc(args->num_cliprects * sizeof(*cliprects), |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 942 | GFP_KERNEL); |
| 943 | if (cliprects == NULL) { |
| 944 | ret = -ENOMEM; |
| 945 | goto pre_mutex_err; |
| 946 | } |
| 947 | |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 948 | if (copy_from_user(cliprects, |
Ville Syrjälä | 2bb4629 | 2013-02-22 16:12:51 +0200 | [diff] [blame] | 949 | to_user_ptr(args->cliprects_ptr), |
| 950 | sizeof(*cliprects)*args->num_cliprects)) { |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 951 | ret = -EFAULT; |
| 952 | goto pre_mutex_err; |
| 953 | } |
| 954 | } |
| 955 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 956 | ret = i915_mutex_lock_interruptible(dev); |
| 957 | if (ret) |
| 958 | goto pre_mutex_err; |
| 959 | |
| 960 | if (dev_priv->mm.suspended) { |
| 961 | mutex_unlock(&dev->struct_mutex); |
| 962 | ret = -EBUSY; |
| 963 | goto pre_mutex_err; |
| 964 | } |
| 965 | |
Chris Wilson | eef90cc | 2013-01-08 10:53:17 +0000 | [diff] [blame] | 966 | eb = eb_create(args); |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 967 | if (eb == NULL) { |
| 968 | mutex_unlock(&dev->struct_mutex); |
| 969 | ret = -ENOMEM; |
| 970 | goto pre_mutex_err; |
| 971 | } |
| 972 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 973 | /* Look up object handles */ |
Chris Wilson | eef90cc | 2013-01-08 10:53:17 +0000 | [diff] [blame] | 974 | ret = eb_lookup_objects(eb, exec, args, file); |
Chris Wilson | 3b96eff | 2013-01-08 10:53:14 +0000 | [diff] [blame] | 975 | if (ret) |
| 976 | goto err; |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 977 | |
Chris Wilson | 6fe4f14 | 2011-01-10 17:35:37 +0000 | [diff] [blame] | 978 | /* take note of the batch buffer before we might reorder the lists */ |
Chris Wilson | bcffc3f | 2013-01-08 10:53:15 +0000 | [diff] [blame] | 979 | batch_obj = list_entry(eb->objects.prev, |
Chris Wilson | 6fe4f14 | 2011-01-10 17:35:37 +0000 | [diff] [blame] | 980 | struct drm_i915_gem_object, |
| 981 | exec_list); |
| 982 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 983 | /* Move the objects en-masse into the GTT, evicting if necessary. */ |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 984 | need_relocs = (args->flags & I915_EXEC_NO_RELOC) == 0; |
Ben Widawsky | cf14496 | 2013-03-13 17:21:05 -0700 | [diff] [blame] | 985 | ret = i915_gem_execbuffer_reserve(ring, &eb->objects, &need_relocs); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 986 | if (ret) |
| 987 | goto err; |
| 988 | |
| 989 | /* The objects are in their final locations, apply the relocations. */ |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 990 | if (need_relocs) |
Ben Widawsky | 41fda59 | 2013-03-13 17:21:06 -0700 | [diff] [blame] | 991 | ret = i915_gem_execbuffer_relocate(eb); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 992 | if (ret) { |
| 993 | if (ret == -EFAULT) { |
Daniel Vetter | ed5982e | 2013-01-17 22:23:36 +0100 | [diff] [blame] | 994 | ret = i915_gem_execbuffer_relocate_slow(dev, args, file, ring, |
| 995 | eb, exec); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 996 | BUG_ON(!mutex_is_locked(&dev->struct_mutex)); |
| 997 | } |
| 998 | if (ret) |
| 999 | goto err; |
| 1000 | } |
| 1001 | |
| 1002 | /* Set the pending read domains for the batch buffer to COMMAND */ |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1003 | if (batch_obj->base.pending_write_domain) { |
Daniel Vetter | ff24019 | 2012-01-31 21:08:14 +0100 | [diff] [blame] | 1004 | DRM_DEBUG("Attempting to use self-modifying batch buffer\n"); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1005 | ret = -EINVAL; |
| 1006 | goto err; |
| 1007 | } |
| 1008 | batch_obj->base.pending_read_domains |= I915_GEM_DOMAIN_COMMAND; |
| 1009 | |
Chris Wilson | d7d4eed | 2012-10-17 12:09:54 +0100 | [diff] [blame] | 1010 | /* snb/ivb/vlv conflate the "batch in ppgtt" bit with the "non-secure |
| 1011 | * batch" bit. Hence we need to pin secure batches into the global gtt. |
| 1012 | * hsw should have this fixed, but let's be paranoid and do it |
| 1013 | * unconditionally for now. */ |
| 1014 | if (flags & I915_DISPATCH_SECURE && !batch_obj->has_global_gtt_mapping) |
| 1015 | i915_gem_gtt_bind_object(batch_obj, batch_obj->cache_level); |
| 1016 | |
Chris Wilson | bcffc3f | 2013-01-08 10:53:15 +0000 | [diff] [blame] | 1017 | ret = i915_gem_execbuffer_move_to_gpu(ring, &eb->objects); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1018 | if (ret) |
| 1019 | goto err; |
| 1020 | |
Eric Anholt | 0da5cec | 2012-07-23 12:33:55 -0700 | [diff] [blame] | 1021 | ret = i915_switch_context(ring, file, ctx_id); |
| 1022 | if (ret) |
| 1023 | goto err; |
| 1024 | |
Ben Widawsky | e2971bd | 2011-12-12 19:21:57 -0800 | [diff] [blame] | 1025 | if (ring == &dev_priv->ring[RCS] && |
| 1026 | mode != dev_priv->relative_constants_mode) { |
| 1027 | ret = intel_ring_begin(ring, 4); |
| 1028 | if (ret) |
| 1029 | goto err; |
| 1030 | |
| 1031 | intel_ring_emit(ring, MI_NOOP); |
| 1032 | intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1)); |
| 1033 | intel_ring_emit(ring, INSTPM); |
Ben Widawsky | 84f9f93 | 2011-12-12 19:21:58 -0800 | [diff] [blame] | 1034 | intel_ring_emit(ring, mask << 16 | mode); |
Ben Widawsky | e2971bd | 2011-12-12 19:21:57 -0800 | [diff] [blame] | 1035 | intel_ring_advance(ring); |
| 1036 | |
| 1037 | dev_priv->relative_constants_mode = mode; |
| 1038 | } |
| 1039 | |
Eric Anholt | ae662d3 | 2012-01-03 09:23:29 -0800 | [diff] [blame] | 1040 | if (args->flags & I915_EXEC_GEN7_SOL_RESET) { |
| 1041 | ret = i915_reset_gen7_sol_offsets(dev, ring); |
| 1042 | if (ret) |
| 1043 | goto err; |
| 1044 | } |
| 1045 | |
Chris Wilson | c4e7a41 | 2010-11-30 14:10:25 +0000 | [diff] [blame] | 1046 | exec_start = batch_obj->gtt_offset + args->batch_start_offset; |
| 1047 | exec_len = args->batch_len; |
| 1048 | if (cliprects) { |
| 1049 | for (i = 0; i < args->num_cliprects; i++) { |
| 1050 | ret = i915_emit_box(dev, &cliprects[i], |
| 1051 | args->DR1, args->DR4); |
| 1052 | if (ret) |
| 1053 | goto err; |
| 1054 | |
| 1055 | ret = ring->dispatch_execbuffer(ring, |
Chris Wilson | d7d4eed | 2012-10-17 12:09:54 +0100 | [diff] [blame] | 1056 | exec_start, exec_len, |
| 1057 | flags); |
Chris Wilson | c4e7a41 | 2010-11-30 14:10:25 +0000 | [diff] [blame] | 1058 | if (ret) |
| 1059 | goto err; |
| 1060 | } |
| 1061 | } else { |
Chris Wilson | d7d4eed | 2012-10-17 12:09:54 +0100 | [diff] [blame] | 1062 | ret = ring->dispatch_execbuffer(ring, |
| 1063 | exec_start, exec_len, |
| 1064 | flags); |
Chris Wilson | c4e7a41 | 2010-11-30 14:10:25 +0000 | [diff] [blame] | 1065 | if (ret) |
| 1066 | goto err; |
| 1067 | } |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1068 | |
Chris Wilson | 9d773091 | 2012-11-27 16:22:52 +0000 | [diff] [blame] | 1069 | trace_i915_gem_ring_dispatch(ring, intel_ring_get_seqno(ring), flags); |
| 1070 | |
Chris Wilson | bcffc3f | 2013-01-08 10:53:15 +0000 | [diff] [blame] | 1071 | i915_gem_execbuffer_move_to_active(&eb->objects, ring); |
Chris Wilson | 432e58e | 2010-11-25 19:32:06 +0000 | [diff] [blame] | 1072 | i915_gem_execbuffer_retire_commands(dev, file, ring); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1073 | |
| 1074 | err: |
Chris Wilson | 67731b8 | 2010-12-08 10:38:14 +0000 | [diff] [blame] | 1075 | eb_destroy(eb); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1076 | |
| 1077 | mutex_unlock(&dev->struct_mutex); |
| 1078 | |
| 1079 | pre_mutex_err: |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1080 | kfree(cliprects); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1081 | return ret; |
| 1082 | } |
| 1083 | |
| 1084 | /* |
| 1085 | * Legacy execbuffer just creates an exec2 list from the original exec object |
| 1086 | * list array and passes it to the real function. |
| 1087 | */ |
| 1088 | int |
| 1089 | i915_gem_execbuffer(struct drm_device *dev, void *data, |
| 1090 | struct drm_file *file) |
| 1091 | { |
| 1092 | struct drm_i915_gem_execbuffer *args = data; |
| 1093 | struct drm_i915_gem_execbuffer2 exec2; |
| 1094 | struct drm_i915_gem_exec_object *exec_list = NULL; |
| 1095 | struct drm_i915_gem_exec_object2 *exec2_list = NULL; |
| 1096 | int ret, i; |
| 1097 | |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1098 | if (args->buffer_count < 1) { |
Daniel Vetter | ff24019 | 2012-01-31 21:08:14 +0100 | [diff] [blame] | 1099 | DRM_DEBUG("execbuf with %d buffers\n", args->buffer_count); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1100 | return -EINVAL; |
| 1101 | } |
| 1102 | |
| 1103 | /* Copy in the exec list from userland */ |
| 1104 | exec_list = drm_malloc_ab(sizeof(*exec_list), args->buffer_count); |
| 1105 | exec2_list = drm_malloc_ab(sizeof(*exec2_list), args->buffer_count); |
| 1106 | if (exec_list == NULL || exec2_list == NULL) { |
Daniel Vetter | ff24019 | 2012-01-31 21:08:14 +0100 | [diff] [blame] | 1107 | DRM_DEBUG("Failed to allocate exec list for %d buffers\n", |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1108 | args->buffer_count); |
| 1109 | drm_free_large(exec_list); |
| 1110 | drm_free_large(exec2_list); |
| 1111 | return -ENOMEM; |
| 1112 | } |
| 1113 | ret = copy_from_user(exec_list, |
Ville Syrjälä | 2bb4629 | 2013-02-22 16:12:51 +0200 | [diff] [blame] | 1114 | to_user_ptr(args->buffers_ptr), |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1115 | sizeof(*exec_list) * args->buffer_count); |
| 1116 | if (ret != 0) { |
Daniel Vetter | ff24019 | 2012-01-31 21:08:14 +0100 | [diff] [blame] | 1117 | DRM_DEBUG("copy %d exec entries failed %d\n", |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1118 | args->buffer_count, ret); |
| 1119 | drm_free_large(exec_list); |
| 1120 | drm_free_large(exec2_list); |
| 1121 | return -EFAULT; |
| 1122 | } |
| 1123 | |
| 1124 | for (i = 0; i < args->buffer_count; i++) { |
| 1125 | exec2_list[i].handle = exec_list[i].handle; |
| 1126 | exec2_list[i].relocation_count = exec_list[i].relocation_count; |
| 1127 | exec2_list[i].relocs_ptr = exec_list[i].relocs_ptr; |
| 1128 | exec2_list[i].alignment = exec_list[i].alignment; |
| 1129 | exec2_list[i].offset = exec_list[i].offset; |
| 1130 | if (INTEL_INFO(dev)->gen < 4) |
| 1131 | exec2_list[i].flags = EXEC_OBJECT_NEEDS_FENCE; |
| 1132 | else |
| 1133 | exec2_list[i].flags = 0; |
| 1134 | } |
| 1135 | |
| 1136 | exec2.buffers_ptr = args->buffers_ptr; |
| 1137 | exec2.buffer_count = args->buffer_count; |
| 1138 | exec2.batch_start_offset = args->batch_start_offset; |
| 1139 | exec2.batch_len = args->batch_len; |
| 1140 | exec2.DR1 = args->DR1; |
| 1141 | exec2.DR4 = args->DR4; |
| 1142 | exec2.num_cliprects = args->num_cliprects; |
| 1143 | exec2.cliprects_ptr = args->cliprects_ptr; |
| 1144 | exec2.flags = I915_EXEC_RENDER; |
Ben Widawsky | 6e0a69d | 2012-06-04 14:42:55 -0700 | [diff] [blame] | 1145 | i915_execbuffer2_set_context_id(exec2, 0); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1146 | |
| 1147 | ret = i915_gem_do_execbuffer(dev, data, file, &exec2, exec2_list); |
| 1148 | if (!ret) { |
| 1149 | /* Copy the new buffer offsets back to the user's exec list. */ |
| 1150 | for (i = 0; i < args->buffer_count; i++) |
| 1151 | exec_list[i].offset = exec2_list[i].offset; |
| 1152 | /* ... and back out to userspace */ |
Ville Syrjälä | 2bb4629 | 2013-02-22 16:12:51 +0200 | [diff] [blame] | 1153 | ret = copy_to_user(to_user_ptr(args->buffers_ptr), |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1154 | exec_list, |
| 1155 | sizeof(*exec_list) * args->buffer_count); |
| 1156 | if (ret) { |
| 1157 | ret = -EFAULT; |
Daniel Vetter | ff24019 | 2012-01-31 21:08:14 +0100 | [diff] [blame] | 1158 | DRM_DEBUG("failed to copy %d exec entries " |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1159 | "back to user (%d)\n", |
| 1160 | args->buffer_count, ret); |
| 1161 | } |
| 1162 | } |
| 1163 | |
| 1164 | drm_free_large(exec_list); |
| 1165 | drm_free_large(exec2_list); |
| 1166 | return ret; |
| 1167 | } |
| 1168 | |
| 1169 | int |
| 1170 | i915_gem_execbuffer2(struct drm_device *dev, void *data, |
| 1171 | struct drm_file *file) |
| 1172 | { |
| 1173 | struct drm_i915_gem_execbuffer2 *args = data; |
| 1174 | struct drm_i915_gem_exec_object2 *exec2_list = NULL; |
| 1175 | int ret; |
| 1176 | |
Xi Wang | ed8cd3b | 2012-04-23 04:06:41 -0400 | [diff] [blame] | 1177 | if (args->buffer_count < 1 || |
| 1178 | args->buffer_count > UINT_MAX / sizeof(*exec2_list)) { |
Daniel Vetter | ff24019 | 2012-01-31 21:08:14 +0100 | [diff] [blame] | 1179 | DRM_DEBUG("execbuf2 with %d buffers\n", args->buffer_count); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1180 | return -EINVAL; |
| 1181 | } |
| 1182 | |
Chris Wilson | 8408c28 | 2011-02-21 12:54:48 +0000 | [diff] [blame] | 1183 | exec2_list = kmalloc(sizeof(*exec2_list)*args->buffer_count, |
Chris Wilson | 419fa72 | 2013-01-08 10:53:13 +0000 | [diff] [blame] | 1184 | GFP_TEMPORARY | __GFP_NOWARN | __GFP_NORETRY); |
Chris Wilson | 8408c28 | 2011-02-21 12:54:48 +0000 | [diff] [blame] | 1185 | if (exec2_list == NULL) |
| 1186 | exec2_list = drm_malloc_ab(sizeof(*exec2_list), |
| 1187 | args->buffer_count); |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1188 | if (exec2_list == NULL) { |
Daniel Vetter | ff24019 | 2012-01-31 21:08:14 +0100 | [diff] [blame] | 1189 | DRM_DEBUG("Failed to allocate exec list for %d buffers\n", |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1190 | args->buffer_count); |
| 1191 | return -ENOMEM; |
| 1192 | } |
| 1193 | ret = copy_from_user(exec2_list, |
Ville Syrjälä | 2bb4629 | 2013-02-22 16:12:51 +0200 | [diff] [blame] | 1194 | to_user_ptr(args->buffers_ptr), |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1195 | sizeof(*exec2_list) * args->buffer_count); |
| 1196 | if (ret != 0) { |
Daniel Vetter | ff24019 | 2012-01-31 21:08:14 +0100 | [diff] [blame] | 1197 | DRM_DEBUG("copy %d exec entries failed %d\n", |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1198 | args->buffer_count, ret); |
| 1199 | drm_free_large(exec2_list); |
| 1200 | return -EFAULT; |
| 1201 | } |
| 1202 | |
| 1203 | ret = i915_gem_do_execbuffer(dev, data, file, args, exec2_list); |
| 1204 | if (!ret) { |
| 1205 | /* Copy the new buffer offsets back to the user's exec list. */ |
Ville Syrjälä | 2bb4629 | 2013-02-22 16:12:51 +0200 | [diff] [blame] | 1206 | ret = copy_to_user(to_user_ptr(args->buffers_ptr), |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1207 | exec2_list, |
| 1208 | sizeof(*exec2_list) * args->buffer_count); |
| 1209 | if (ret) { |
| 1210 | ret = -EFAULT; |
Daniel Vetter | ff24019 | 2012-01-31 21:08:14 +0100 | [diff] [blame] | 1211 | DRM_DEBUG("failed to copy %d exec entries " |
Chris Wilson | 54cf91d | 2010-11-25 18:00:26 +0000 | [diff] [blame] | 1212 | "back to user (%d)\n", |
| 1213 | args->buffer_count, ret); |
| 1214 | } |
| 1215 | } |
| 1216 | |
| 1217 | drm_free_large(exec2_list); |
| 1218 | return ret; |
| 1219 | } |