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Commit | Line | Data |
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673a394b | 1 | /* |
be6a0376 | 2 | * Copyright © 2008-2015 Intel Corporation |
673a394b EA |
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 | ||
760285e7 | 28 | #include <drm/drmP.h> |
0de23977 | 29 | #include <drm/drm_vma_manager.h> |
760285e7 | 30 | #include <drm/i915_drm.h> |
673a394b | 31 | #include "i915_drv.h" |
eb82289a | 32 | #include "i915_vgpu.h" |
1c5d22f7 | 33 | #include "i915_trace.h" |
652c393a | 34 | #include "intel_drv.h" |
5949eac4 | 35 | #include <linux/shmem_fs.h> |
5a0e3ad6 | 36 | #include <linux/slab.h> |
673a394b | 37 | #include <linux/swap.h> |
79e53945 | 38 | #include <linux/pci.h> |
1286ff73 | 39 | #include <linux/dma-buf.h> |
673a394b | 40 | |
b4716185 CW |
41 | #define RQ_BUG_ON(expr) |
42 | ||
05394f39 | 43 | static void i915_gem_object_flush_gtt_write_domain(struct drm_i915_gem_object *obj); |
e62b59e4 | 44 | static void i915_gem_object_flush_cpu_write_domain(struct drm_i915_gem_object *obj); |
c8725f3d | 45 | static void |
b4716185 CW |
46 | i915_gem_object_retire__write(struct drm_i915_gem_object *obj); |
47 | static void | |
48 | i915_gem_object_retire__read(struct drm_i915_gem_object *obj, int ring); | |
61050808 CW |
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 | ||
c76ce038 CW |
55 | static bool cpu_cache_is_coherent(struct drm_device *dev, |
56 | enum i915_cache_level level) | |
57 | { | |
58 | return HAS_LLC(dev) || level != I915_CACHE_NONE; | |
59 | } | |
60 | ||
2c22569b CW |
61 | static bool cpu_write_needs_clflush(struct drm_i915_gem_object *obj) |
62 | { | |
63 | if (!cpu_cache_is_coherent(obj->base.dev, obj->cache_level)) | |
64 | return true; | |
65 | ||
66 | return obj->pin_display; | |
67 | } | |
68 | ||
61050808 CW |
69 | static inline void i915_gem_object_fence_lost(struct drm_i915_gem_object *obj) |
70 | { | |
71 | if (obj->tiling_mode) | |
72 | i915_gem_release_mmap(obj); | |
73 | ||
74 | /* As we do not have an associated fence register, we will force | |
75 | * a tiling change if we ever need to acquire one. | |
76 | */ | |
5d82e3e6 | 77 | obj->fence_dirty = false; |
61050808 CW |
78 | obj->fence_reg = I915_FENCE_REG_NONE; |
79 | } | |
80 | ||
73aa808f CW |
81 | /* some bookkeeping */ |
82 | static void i915_gem_info_add_obj(struct drm_i915_private *dev_priv, | |
83 | size_t size) | |
84 | { | |
c20e8355 | 85 | spin_lock(&dev_priv->mm.object_stat_lock); |
73aa808f CW |
86 | dev_priv->mm.object_count++; |
87 | dev_priv->mm.object_memory += size; | |
c20e8355 | 88 | spin_unlock(&dev_priv->mm.object_stat_lock); |
73aa808f CW |
89 | } |
90 | ||
91 | static void i915_gem_info_remove_obj(struct drm_i915_private *dev_priv, | |
92 | size_t size) | |
93 | { | |
c20e8355 | 94 | spin_lock(&dev_priv->mm.object_stat_lock); |
73aa808f CW |
95 | dev_priv->mm.object_count--; |
96 | dev_priv->mm.object_memory -= size; | |
c20e8355 | 97 | spin_unlock(&dev_priv->mm.object_stat_lock); |
73aa808f CW |
98 | } |
99 | ||
21dd3734 | 100 | static int |
33196ded | 101 | i915_gem_wait_for_error(struct i915_gpu_error *error) |
30dbf0c0 | 102 | { |
30dbf0c0 CW |
103 | int ret; |
104 | ||
7abb690a DV |
105 | #define EXIT_COND (!i915_reset_in_progress(error) || \ |
106 | i915_terminally_wedged(error)) | |
1f83fee0 | 107 | if (EXIT_COND) |
30dbf0c0 CW |
108 | return 0; |
109 | ||
0a6759c6 DV |
110 | /* |
111 | * Only wait 10 seconds for the gpu reset to complete to avoid hanging | |
112 | * userspace. If it takes that long something really bad is going on and | |
113 | * we should simply try to bail out and fail as gracefully as possible. | |
114 | */ | |
1f83fee0 DV |
115 | ret = wait_event_interruptible_timeout(error->reset_queue, |
116 | EXIT_COND, | |
117 | 10*HZ); | |
0a6759c6 DV |
118 | if (ret == 0) { |
119 | DRM_ERROR("Timed out waiting for the gpu reset to complete\n"); | |
120 | return -EIO; | |
121 | } else if (ret < 0) { | |
30dbf0c0 | 122 | return ret; |
0a6759c6 | 123 | } |
1f83fee0 | 124 | #undef EXIT_COND |
30dbf0c0 | 125 | |
21dd3734 | 126 | return 0; |
30dbf0c0 CW |
127 | } |
128 | ||
54cf91dc | 129 | int i915_mutex_lock_interruptible(struct drm_device *dev) |
76c1dec1 | 130 | { |
33196ded | 131 | struct drm_i915_private *dev_priv = dev->dev_private; |
76c1dec1 CW |
132 | int ret; |
133 | ||
33196ded | 134 | ret = i915_gem_wait_for_error(&dev_priv->gpu_error); |
76c1dec1 CW |
135 | if (ret) |
136 | return ret; | |
137 | ||
138 | ret = mutex_lock_interruptible(&dev->struct_mutex); | |
139 | if (ret) | |
140 | return ret; | |
141 | ||
23bc5982 | 142 | WARN_ON(i915_verify_lists(dev)); |
76c1dec1 CW |
143 | return 0; |
144 | } | |
30dbf0c0 | 145 | |
5a125c3c EA |
146 | int |
147 | i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data, | |
05394f39 | 148 | struct drm_file *file) |
5a125c3c | 149 | { |
73aa808f | 150 | struct drm_i915_private *dev_priv = dev->dev_private; |
5a125c3c | 151 | struct drm_i915_gem_get_aperture *args = data; |
ca1543be TU |
152 | struct i915_gtt *ggtt = &dev_priv->gtt; |
153 | struct i915_vma *vma; | |
6299f992 | 154 | size_t pinned; |
5a125c3c | 155 | |
6299f992 | 156 | pinned = 0; |
73aa808f | 157 | mutex_lock(&dev->struct_mutex); |
ca1543be TU |
158 | list_for_each_entry(vma, &ggtt->base.active_list, mm_list) |
159 | if (vma->pin_count) | |
160 | pinned += vma->node.size; | |
161 | list_for_each_entry(vma, &ggtt->base.inactive_list, mm_list) | |
162 | if (vma->pin_count) | |
163 | pinned += vma->node.size; | |
73aa808f | 164 | mutex_unlock(&dev->struct_mutex); |
5a125c3c | 165 | |
853ba5d2 | 166 | args->aper_size = dev_priv->gtt.base.total; |
0206e353 | 167 | args->aper_available_size = args->aper_size - pinned; |
6299f992 | 168 | |
5a125c3c EA |
169 | return 0; |
170 | } | |
171 | ||
6a2c4232 CW |
172 | static int |
173 | i915_gem_object_get_pages_phys(struct drm_i915_gem_object *obj) | |
00731155 | 174 | { |
6a2c4232 CW |
175 | struct address_space *mapping = file_inode(obj->base.filp)->i_mapping; |
176 | char *vaddr = obj->phys_handle->vaddr; | |
177 | struct sg_table *st; | |
178 | struct scatterlist *sg; | |
179 | int i; | |
00731155 | 180 | |
6a2c4232 CW |
181 | if (WARN_ON(i915_gem_object_needs_bit17_swizzle(obj))) |
182 | return -EINVAL; | |
183 | ||
184 | for (i = 0; i < obj->base.size / PAGE_SIZE; i++) { | |
185 | struct page *page; | |
186 | char *src; | |
187 | ||
188 | page = shmem_read_mapping_page(mapping, i); | |
189 | if (IS_ERR(page)) | |
190 | return PTR_ERR(page); | |
191 | ||
192 | src = kmap_atomic(page); | |
193 | memcpy(vaddr, src, PAGE_SIZE); | |
194 | drm_clflush_virt_range(vaddr, PAGE_SIZE); | |
195 | kunmap_atomic(src); | |
196 | ||
197 | page_cache_release(page); | |
198 | vaddr += PAGE_SIZE; | |
199 | } | |
200 | ||
201 | i915_gem_chipset_flush(obj->base.dev); | |
202 | ||
203 | st = kmalloc(sizeof(*st), GFP_KERNEL); | |
204 | if (st == NULL) | |
205 | return -ENOMEM; | |
206 | ||
207 | if (sg_alloc_table(st, 1, GFP_KERNEL)) { | |
208 | kfree(st); | |
209 | return -ENOMEM; | |
210 | } | |
211 | ||
212 | sg = st->sgl; | |
213 | sg->offset = 0; | |
214 | sg->length = obj->base.size; | |
00731155 | 215 | |
6a2c4232 CW |
216 | sg_dma_address(sg) = obj->phys_handle->busaddr; |
217 | sg_dma_len(sg) = obj->base.size; | |
218 | ||
219 | obj->pages = st; | |
220 | obj->has_dma_mapping = true; | |
221 | return 0; | |
222 | } | |
223 | ||
224 | static void | |
225 | i915_gem_object_put_pages_phys(struct drm_i915_gem_object *obj) | |
226 | { | |
227 | int ret; | |
228 | ||
229 | BUG_ON(obj->madv == __I915_MADV_PURGED); | |
00731155 | 230 | |
6a2c4232 CW |
231 | ret = i915_gem_object_set_to_cpu_domain(obj, true); |
232 | if (ret) { | |
233 | /* In the event of a disaster, abandon all caches and | |
234 | * hope for the best. | |
235 | */ | |
236 | WARN_ON(ret != -EIO); | |
237 | obj->base.read_domains = obj->base.write_domain = I915_GEM_DOMAIN_CPU; | |
238 | } | |
239 | ||
240 | if (obj->madv == I915_MADV_DONTNEED) | |
241 | obj->dirty = 0; | |
242 | ||
243 | if (obj->dirty) { | |
00731155 | 244 | struct address_space *mapping = file_inode(obj->base.filp)->i_mapping; |
6a2c4232 | 245 | char *vaddr = obj->phys_handle->vaddr; |
00731155 CW |
246 | int i; |
247 | ||
248 | for (i = 0; i < obj->base.size / PAGE_SIZE; i++) { | |
6a2c4232 CW |
249 | struct page *page; |
250 | char *dst; | |
251 | ||
252 | page = shmem_read_mapping_page(mapping, i); | |
253 | if (IS_ERR(page)) | |
254 | continue; | |
255 | ||
256 | dst = kmap_atomic(page); | |
257 | drm_clflush_virt_range(vaddr, PAGE_SIZE); | |
258 | memcpy(dst, vaddr, PAGE_SIZE); | |
259 | kunmap_atomic(dst); | |
260 | ||
261 | set_page_dirty(page); | |
262 | if (obj->madv == I915_MADV_WILLNEED) | |
00731155 | 263 | mark_page_accessed(page); |
6a2c4232 | 264 | page_cache_release(page); |
00731155 CW |
265 | vaddr += PAGE_SIZE; |
266 | } | |
6a2c4232 | 267 | obj->dirty = 0; |
00731155 CW |
268 | } |
269 | ||
6a2c4232 CW |
270 | sg_free_table(obj->pages); |
271 | kfree(obj->pages); | |
272 | ||
273 | obj->has_dma_mapping = false; | |
274 | } | |
275 | ||
276 | static void | |
277 | i915_gem_object_release_phys(struct drm_i915_gem_object *obj) | |
278 | { | |
279 | drm_pci_free(obj->base.dev, obj->phys_handle); | |
280 | } | |
281 | ||
282 | static const struct drm_i915_gem_object_ops i915_gem_phys_ops = { | |
283 | .get_pages = i915_gem_object_get_pages_phys, | |
284 | .put_pages = i915_gem_object_put_pages_phys, | |
285 | .release = i915_gem_object_release_phys, | |
286 | }; | |
287 | ||
288 | static int | |
289 | drop_pages(struct drm_i915_gem_object *obj) | |
290 | { | |
291 | struct i915_vma *vma, *next; | |
292 | int ret; | |
293 | ||
294 | drm_gem_object_reference(&obj->base); | |
295 | list_for_each_entry_safe(vma, next, &obj->vma_list, vma_link) | |
296 | if (i915_vma_unbind(vma)) | |
297 | break; | |
298 | ||
299 | ret = i915_gem_object_put_pages(obj); | |
300 | drm_gem_object_unreference(&obj->base); | |
301 | ||
302 | return ret; | |
00731155 CW |
303 | } |
304 | ||
305 | int | |
306 | i915_gem_object_attach_phys(struct drm_i915_gem_object *obj, | |
307 | int align) | |
308 | { | |
309 | drm_dma_handle_t *phys; | |
6a2c4232 | 310 | int ret; |
00731155 CW |
311 | |
312 | if (obj->phys_handle) { | |
313 | if ((unsigned long)obj->phys_handle->vaddr & (align -1)) | |
314 | return -EBUSY; | |
315 | ||
316 | return 0; | |
317 | } | |
318 | ||
319 | if (obj->madv != I915_MADV_WILLNEED) | |
320 | return -EFAULT; | |
321 | ||
322 | if (obj->base.filp == NULL) | |
323 | return -EINVAL; | |
324 | ||
6a2c4232 CW |
325 | ret = drop_pages(obj); |
326 | if (ret) | |
327 | return ret; | |
328 | ||
00731155 CW |
329 | /* create a new object */ |
330 | phys = drm_pci_alloc(obj->base.dev, obj->base.size, align); | |
331 | if (!phys) | |
332 | return -ENOMEM; | |
333 | ||
00731155 | 334 | obj->phys_handle = phys; |
6a2c4232 CW |
335 | obj->ops = &i915_gem_phys_ops; |
336 | ||
337 | return i915_gem_object_get_pages(obj); | |
00731155 CW |
338 | } |
339 | ||
340 | static int | |
341 | i915_gem_phys_pwrite(struct drm_i915_gem_object *obj, | |
342 | struct drm_i915_gem_pwrite *args, | |
343 | struct drm_file *file_priv) | |
344 | { | |
345 | struct drm_device *dev = obj->base.dev; | |
346 | void *vaddr = obj->phys_handle->vaddr + args->offset; | |
347 | char __user *user_data = to_user_ptr(args->data_ptr); | |
063e4e6b | 348 | int ret = 0; |
6a2c4232 CW |
349 | |
350 | /* We manually control the domain here and pretend that it | |
351 | * remains coherent i.e. in the GTT domain, like shmem_pwrite. | |
352 | */ | |
353 | ret = i915_gem_object_wait_rendering(obj, false); | |
354 | if (ret) | |
355 | return ret; | |
00731155 | 356 | |
77a0d1ca | 357 | intel_fb_obj_invalidate(obj, ORIGIN_CPU); |
00731155 CW |
358 | if (__copy_from_user_inatomic_nocache(vaddr, user_data, args->size)) { |
359 | unsigned long unwritten; | |
360 | ||
361 | /* The physical object once assigned is fixed for the lifetime | |
362 | * of the obj, so we can safely drop the lock and continue | |
363 | * to access vaddr. | |
364 | */ | |
365 | mutex_unlock(&dev->struct_mutex); | |
366 | unwritten = copy_from_user(vaddr, user_data, args->size); | |
367 | mutex_lock(&dev->struct_mutex); | |
063e4e6b PZ |
368 | if (unwritten) { |
369 | ret = -EFAULT; | |
370 | goto out; | |
371 | } | |
00731155 CW |
372 | } |
373 | ||
6a2c4232 | 374 | drm_clflush_virt_range(vaddr, args->size); |
00731155 | 375 | i915_gem_chipset_flush(dev); |
063e4e6b PZ |
376 | |
377 | out: | |
378 | intel_fb_obj_flush(obj, false); | |
379 | return ret; | |
00731155 CW |
380 | } |
381 | ||
42dcedd4 CW |
382 | void *i915_gem_object_alloc(struct drm_device *dev) |
383 | { | |
384 | struct drm_i915_private *dev_priv = dev->dev_private; | |
efab6d8d | 385 | return kmem_cache_zalloc(dev_priv->objects, GFP_KERNEL); |
42dcedd4 CW |
386 | } |
387 | ||
388 | void i915_gem_object_free(struct drm_i915_gem_object *obj) | |
389 | { | |
390 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; | |
efab6d8d | 391 | kmem_cache_free(dev_priv->objects, obj); |
42dcedd4 CW |
392 | } |
393 | ||
ff72145b DA |
394 | static int |
395 | i915_gem_create(struct drm_file *file, | |
396 | struct drm_device *dev, | |
397 | uint64_t size, | |
398 | uint32_t *handle_p) | |
673a394b | 399 | { |
05394f39 | 400 | struct drm_i915_gem_object *obj; |
a1a2d1d3 PP |
401 | int ret; |
402 | u32 handle; | |
673a394b | 403 | |
ff72145b | 404 | size = roundup(size, PAGE_SIZE); |
8ffc0246 CW |
405 | if (size == 0) |
406 | return -EINVAL; | |
673a394b EA |
407 | |
408 | /* Allocate the new object */ | |
ff72145b | 409 | obj = i915_gem_alloc_object(dev, size); |
673a394b EA |
410 | if (obj == NULL) |
411 | return -ENOMEM; | |
412 | ||
05394f39 | 413 | ret = drm_gem_handle_create(file, &obj->base, &handle); |
202f2fef | 414 | /* drop reference from allocate - handle holds it now */ |
d861e338 DV |
415 | drm_gem_object_unreference_unlocked(&obj->base); |
416 | if (ret) | |
417 | return ret; | |
202f2fef | 418 | |
ff72145b | 419 | *handle_p = handle; |
673a394b EA |
420 | return 0; |
421 | } | |
422 | ||
ff72145b DA |
423 | int |
424 | i915_gem_dumb_create(struct drm_file *file, | |
425 | struct drm_device *dev, | |
426 | struct drm_mode_create_dumb *args) | |
427 | { | |
428 | /* have to work out size/pitch and return them */ | |
de45eaf7 | 429 | args->pitch = ALIGN(args->width * DIV_ROUND_UP(args->bpp, 8), 64); |
ff72145b DA |
430 | args->size = args->pitch * args->height; |
431 | return i915_gem_create(file, dev, | |
da6b51d0 | 432 | args->size, &args->handle); |
ff72145b DA |
433 | } |
434 | ||
ff72145b DA |
435 | /** |
436 | * Creates a new mm object and returns a handle to it. | |
437 | */ | |
438 | int | |
439 | i915_gem_create_ioctl(struct drm_device *dev, void *data, | |
440 | struct drm_file *file) | |
441 | { | |
442 | struct drm_i915_gem_create *args = data; | |
63ed2cb2 | 443 | |
ff72145b | 444 | return i915_gem_create(file, dev, |
da6b51d0 | 445 | args->size, &args->handle); |
ff72145b DA |
446 | } |
447 | ||
8461d226 DV |
448 | static inline int |
449 | __copy_to_user_swizzled(char __user *cpu_vaddr, | |
450 | const char *gpu_vaddr, int gpu_offset, | |
451 | int length) | |
452 | { | |
453 | int ret, cpu_offset = 0; | |
454 | ||
455 | while (length > 0) { | |
456 | int cacheline_end = ALIGN(gpu_offset + 1, 64); | |
457 | int this_length = min(cacheline_end - gpu_offset, length); | |
458 | int swizzled_gpu_offset = gpu_offset ^ 64; | |
459 | ||
460 | ret = __copy_to_user(cpu_vaddr + cpu_offset, | |
461 | gpu_vaddr + swizzled_gpu_offset, | |
462 | this_length); | |
463 | if (ret) | |
464 | return ret + length; | |
465 | ||
466 | cpu_offset += this_length; | |
467 | gpu_offset += this_length; | |
468 | length -= this_length; | |
469 | } | |
470 | ||
471 | return 0; | |
472 | } | |
473 | ||
8c59967c | 474 | static inline int |
4f0c7cfb BW |
475 | __copy_from_user_swizzled(char *gpu_vaddr, int gpu_offset, |
476 | const char __user *cpu_vaddr, | |
8c59967c DV |
477 | int length) |
478 | { | |
479 | int ret, cpu_offset = 0; | |
480 | ||
481 | while (length > 0) { | |
482 | int cacheline_end = ALIGN(gpu_offset + 1, 64); | |
483 | int this_length = min(cacheline_end - gpu_offset, length); | |
484 | int swizzled_gpu_offset = gpu_offset ^ 64; | |
485 | ||
486 | ret = __copy_from_user(gpu_vaddr + swizzled_gpu_offset, | |
487 | cpu_vaddr + cpu_offset, | |
488 | this_length); | |
489 | if (ret) | |
490 | return ret + length; | |
491 | ||
492 | cpu_offset += this_length; | |
493 | gpu_offset += this_length; | |
494 | length -= this_length; | |
495 | } | |
496 | ||
497 | return 0; | |
498 | } | |
499 | ||
4c914c0c BV |
500 | /* |
501 | * Pins the specified object's pages and synchronizes the object with | |
502 | * GPU accesses. Sets needs_clflush to non-zero if the caller should | |
503 | * flush the object from the CPU cache. | |
504 | */ | |
505 | int i915_gem_obj_prepare_shmem_read(struct drm_i915_gem_object *obj, | |
506 | int *needs_clflush) | |
507 | { | |
508 | int ret; | |
509 | ||
510 | *needs_clflush = 0; | |
511 | ||
512 | if (!obj->base.filp) | |
513 | return -EINVAL; | |
514 | ||
515 | if (!(obj->base.read_domains & I915_GEM_DOMAIN_CPU)) { | |
516 | /* If we're not in the cpu read domain, set ourself into the gtt | |
517 | * read domain and manually flush cachelines (if required). This | |
518 | * optimizes for the case when the gpu will dirty the data | |
519 | * anyway again before the next pread happens. */ | |
520 | *needs_clflush = !cpu_cache_is_coherent(obj->base.dev, | |
521 | obj->cache_level); | |
522 | ret = i915_gem_object_wait_rendering(obj, true); | |
523 | if (ret) | |
524 | return ret; | |
525 | } | |
526 | ||
527 | ret = i915_gem_object_get_pages(obj); | |
528 | if (ret) | |
529 | return ret; | |
530 | ||
531 | i915_gem_object_pin_pages(obj); | |
532 | ||
533 | return ret; | |
534 | } | |
535 | ||
d174bd64 DV |
536 | /* Per-page copy function for the shmem pread fastpath. |
537 | * Flushes invalid cachelines before reading the target if | |
538 | * needs_clflush is set. */ | |
eb01459f | 539 | static int |
d174bd64 DV |
540 | shmem_pread_fast(struct page *page, int shmem_page_offset, int page_length, |
541 | char __user *user_data, | |
542 | bool page_do_bit17_swizzling, bool needs_clflush) | |
543 | { | |
544 | char *vaddr; | |
545 | int ret; | |
546 | ||
e7e58eb5 | 547 | if (unlikely(page_do_bit17_swizzling)) |
d174bd64 DV |
548 | return -EINVAL; |
549 | ||
550 | vaddr = kmap_atomic(page); | |
551 | if (needs_clflush) | |
552 | drm_clflush_virt_range(vaddr + shmem_page_offset, | |
553 | page_length); | |
554 | ret = __copy_to_user_inatomic(user_data, | |
555 | vaddr + shmem_page_offset, | |
556 | page_length); | |
557 | kunmap_atomic(vaddr); | |
558 | ||
f60d7f0c | 559 | return ret ? -EFAULT : 0; |
d174bd64 DV |
560 | } |
561 | ||
23c18c71 DV |
562 | static void |
563 | shmem_clflush_swizzled_range(char *addr, unsigned long length, | |
564 | bool swizzled) | |
565 | { | |
e7e58eb5 | 566 | if (unlikely(swizzled)) { |
23c18c71 DV |
567 | unsigned long start = (unsigned long) addr; |
568 | unsigned long end = (unsigned long) addr + length; | |
569 | ||
570 | /* For swizzling simply ensure that we always flush both | |
571 | * channels. Lame, but simple and it works. Swizzled | |
572 | * pwrite/pread is far from a hotpath - current userspace | |
573 | * doesn't use it at all. */ | |
574 | start = round_down(start, 128); | |
575 | end = round_up(end, 128); | |
576 | ||
577 | drm_clflush_virt_range((void *)start, end - start); | |
578 | } else { | |
579 | drm_clflush_virt_range(addr, length); | |
580 | } | |
581 | ||
582 | } | |
583 | ||
d174bd64 DV |
584 | /* Only difference to the fast-path function is that this can handle bit17 |
585 | * and uses non-atomic copy and kmap functions. */ | |
586 | static int | |
587 | shmem_pread_slow(struct page *page, int shmem_page_offset, int page_length, | |
588 | char __user *user_data, | |
589 | bool page_do_bit17_swizzling, bool needs_clflush) | |
590 | { | |
591 | char *vaddr; | |
592 | int ret; | |
593 | ||
594 | vaddr = kmap(page); | |
595 | if (needs_clflush) | |
23c18c71 DV |
596 | shmem_clflush_swizzled_range(vaddr + shmem_page_offset, |
597 | page_length, | |
598 | page_do_bit17_swizzling); | |
d174bd64 DV |
599 | |
600 | if (page_do_bit17_swizzling) | |
601 | ret = __copy_to_user_swizzled(user_data, | |
602 | vaddr, shmem_page_offset, | |
603 | page_length); | |
604 | else | |
605 | ret = __copy_to_user(user_data, | |
606 | vaddr + shmem_page_offset, | |
607 | page_length); | |
608 | kunmap(page); | |
609 | ||
f60d7f0c | 610 | return ret ? - EFAULT : 0; |
d174bd64 DV |
611 | } |
612 | ||
eb01459f | 613 | static int |
dbf7bff0 DV |
614 | i915_gem_shmem_pread(struct drm_device *dev, |
615 | struct drm_i915_gem_object *obj, | |
616 | struct drm_i915_gem_pread *args, | |
617 | struct drm_file *file) | |
eb01459f | 618 | { |
8461d226 | 619 | char __user *user_data; |
eb01459f | 620 | ssize_t remain; |
8461d226 | 621 | loff_t offset; |
eb2c0c81 | 622 | int shmem_page_offset, page_length, ret = 0; |
8461d226 | 623 | int obj_do_bit17_swizzling, page_do_bit17_swizzling; |
96d79b52 | 624 | int prefaulted = 0; |
8489731c | 625 | int needs_clflush = 0; |
67d5a50c | 626 | struct sg_page_iter sg_iter; |
eb01459f | 627 | |
2bb4629a | 628 | user_data = to_user_ptr(args->data_ptr); |
eb01459f EA |
629 | remain = args->size; |
630 | ||
8461d226 | 631 | obj_do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
eb01459f | 632 | |
4c914c0c | 633 | ret = i915_gem_obj_prepare_shmem_read(obj, &needs_clflush); |
f60d7f0c CW |
634 | if (ret) |
635 | return ret; | |
636 | ||
8461d226 | 637 | offset = args->offset; |
eb01459f | 638 | |
67d5a50c ID |
639 | for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, |
640 | offset >> PAGE_SHIFT) { | |
2db76d7c | 641 | struct page *page = sg_page_iter_page(&sg_iter); |
9da3da66 CW |
642 | |
643 | if (remain <= 0) | |
644 | break; | |
645 | ||
eb01459f EA |
646 | /* Operation in this page |
647 | * | |
eb01459f | 648 | * shmem_page_offset = offset within page in shmem file |
eb01459f EA |
649 | * page_length = bytes to copy for this page |
650 | */ | |
c8cbbb8b | 651 | shmem_page_offset = offset_in_page(offset); |
eb01459f EA |
652 | page_length = remain; |
653 | if ((shmem_page_offset + page_length) > PAGE_SIZE) | |
654 | page_length = PAGE_SIZE - shmem_page_offset; | |
eb01459f | 655 | |
8461d226 DV |
656 | page_do_bit17_swizzling = obj_do_bit17_swizzling && |
657 | (page_to_phys(page) & (1 << 17)) != 0; | |
658 | ||
d174bd64 DV |
659 | ret = shmem_pread_fast(page, shmem_page_offset, page_length, |
660 | user_data, page_do_bit17_swizzling, | |
661 | needs_clflush); | |
662 | if (ret == 0) | |
663 | goto next_page; | |
dbf7bff0 | 664 | |
dbf7bff0 DV |
665 | mutex_unlock(&dev->struct_mutex); |
666 | ||
d330a953 | 667 | if (likely(!i915.prefault_disable) && !prefaulted) { |
f56f821f | 668 | ret = fault_in_multipages_writeable(user_data, remain); |
96d79b52 DV |
669 | /* Userspace is tricking us, but we've already clobbered |
670 | * its pages with the prefault and promised to write the | |
671 | * data up to the first fault. Hence ignore any errors | |
672 | * and just continue. */ | |
673 | (void)ret; | |
674 | prefaulted = 1; | |
675 | } | |
eb01459f | 676 | |
d174bd64 DV |
677 | ret = shmem_pread_slow(page, shmem_page_offset, page_length, |
678 | user_data, page_do_bit17_swizzling, | |
679 | needs_clflush); | |
eb01459f | 680 | |
dbf7bff0 | 681 | mutex_lock(&dev->struct_mutex); |
f60d7f0c | 682 | |
f60d7f0c | 683 | if (ret) |
8461d226 | 684 | goto out; |
8461d226 | 685 | |
17793c9a | 686 | next_page: |
eb01459f | 687 | remain -= page_length; |
8461d226 | 688 | user_data += page_length; |
eb01459f EA |
689 | offset += page_length; |
690 | } | |
691 | ||
4f27b75d | 692 | out: |
f60d7f0c CW |
693 | i915_gem_object_unpin_pages(obj); |
694 | ||
eb01459f EA |
695 | return ret; |
696 | } | |
697 | ||
673a394b EA |
698 | /** |
699 | * Reads data from the object referenced by handle. | |
700 | * | |
701 | * On error, the contents of *data are undefined. | |
702 | */ | |
703 | int | |
704 | i915_gem_pread_ioctl(struct drm_device *dev, void *data, | |
05394f39 | 705 | struct drm_file *file) |
673a394b EA |
706 | { |
707 | struct drm_i915_gem_pread *args = data; | |
05394f39 | 708 | struct drm_i915_gem_object *obj; |
35b62a89 | 709 | int ret = 0; |
673a394b | 710 | |
51311d0a CW |
711 | if (args->size == 0) |
712 | return 0; | |
713 | ||
714 | if (!access_ok(VERIFY_WRITE, | |
2bb4629a | 715 | to_user_ptr(args->data_ptr), |
51311d0a CW |
716 | args->size)) |
717 | return -EFAULT; | |
718 | ||
4f27b75d | 719 | ret = i915_mutex_lock_interruptible(dev); |
1d7cfea1 | 720 | if (ret) |
4f27b75d | 721 | return ret; |
673a394b | 722 | |
05394f39 | 723 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
c8725226 | 724 | if (&obj->base == NULL) { |
1d7cfea1 CW |
725 | ret = -ENOENT; |
726 | goto unlock; | |
4f27b75d | 727 | } |
673a394b | 728 | |
7dcd2499 | 729 | /* Bounds check source. */ |
05394f39 CW |
730 | if (args->offset > obj->base.size || |
731 | args->size > obj->base.size - args->offset) { | |
ce9d419d | 732 | ret = -EINVAL; |
35b62a89 | 733 | goto out; |
ce9d419d CW |
734 | } |
735 | ||
1286ff73 DV |
736 | /* prime objects have no backing filp to GEM pread/pwrite |
737 | * pages from. | |
738 | */ | |
739 | if (!obj->base.filp) { | |
740 | ret = -EINVAL; | |
741 | goto out; | |
742 | } | |
743 | ||
db53a302 CW |
744 | trace_i915_gem_object_pread(obj, args->offset, args->size); |
745 | ||
dbf7bff0 | 746 | ret = i915_gem_shmem_pread(dev, obj, args, file); |
673a394b | 747 | |
35b62a89 | 748 | out: |
05394f39 | 749 | drm_gem_object_unreference(&obj->base); |
1d7cfea1 | 750 | unlock: |
4f27b75d | 751 | mutex_unlock(&dev->struct_mutex); |
eb01459f | 752 | return ret; |
673a394b EA |
753 | } |
754 | ||
0839ccb8 KP |
755 | /* This is the fast write path which cannot handle |
756 | * page faults in the source data | |
9b7530cc | 757 | */ |
0839ccb8 KP |
758 | |
759 | static inline int | |
760 | fast_user_write(struct io_mapping *mapping, | |
761 | loff_t page_base, int page_offset, | |
762 | char __user *user_data, | |
763 | int length) | |
9b7530cc | 764 | { |
4f0c7cfb BW |
765 | void __iomem *vaddr_atomic; |
766 | void *vaddr; | |
0839ccb8 | 767 | unsigned long unwritten; |
9b7530cc | 768 | |
3e4d3af5 | 769 | vaddr_atomic = io_mapping_map_atomic_wc(mapping, page_base); |
4f0c7cfb BW |
770 | /* We can use the cpu mem copy function because this is X86. */ |
771 | vaddr = (void __force*)vaddr_atomic + page_offset; | |
772 | unwritten = __copy_from_user_inatomic_nocache(vaddr, | |
0839ccb8 | 773 | user_data, length); |
3e4d3af5 | 774 | io_mapping_unmap_atomic(vaddr_atomic); |
fbd5a26d | 775 | return unwritten; |
0839ccb8 KP |
776 | } |
777 | ||
3de09aa3 EA |
778 | /** |
779 | * This is the fast pwrite path, where we copy the data directly from the | |
780 | * user into the GTT, uncached. | |
781 | */ | |
673a394b | 782 | static int |
05394f39 CW |
783 | i915_gem_gtt_pwrite_fast(struct drm_device *dev, |
784 | struct drm_i915_gem_object *obj, | |
3de09aa3 | 785 | struct drm_i915_gem_pwrite *args, |
05394f39 | 786 | struct drm_file *file) |
673a394b | 787 | { |
3e31c6c0 | 788 | struct drm_i915_private *dev_priv = dev->dev_private; |
673a394b | 789 | ssize_t remain; |
0839ccb8 | 790 | loff_t offset, page_base; |
673a394b | 791 | char __user *user_data; |
935aaa69 DV |
792 | int page_offset, page_length, ret; |
793 | ||
1ec9e26d | 794 | ret = i915_gem_obj_ggtt_pin(obj, 0, PIN_MAPPABLE | PIN_NONBLOCK); |
935aaa69 DV |
795 | if (ret) |
796 | goto out; | |
797 | ||
798 | ret = i915_gem_object_set_to_gtt_domain(obj, true); | |
799 | if (ret) | |
800 | goto out_unpin; | |
801 | ||
802 | ret = i915_gem_object_put_fence(obj); | |
803 | if (ret) | |
804 | goto out_unpin; | |
673a394b | 805 | |
2bb4629a | 806 | user_data = to_user_ptr(args->data_ptr); |
673a394b | 807 | remain = args->size; |
673a394b | 808 | |
f343c5f6 | 809 | offset = i915_gem_obj_ggtt_offset(obj) + args->offset; |
673a394b | 810 | |
77a0d1ca | 811 | intel_fb_obj_invalidate(obj, ORIGIN_GTT); |
063e4e6b | 812 | |
673a394b EA |
813 | while (remain > 0) { |
814 | /* Operation in this page | |
815 | * | |
0839ccb8 KP |
816 | * page_base = page offset within aperture |
817 | * page_offset = offset within page | |
818 | * page_length = bytes to copy for this page | |
673a394b | 819 | */ |
c8cbbb8b CW |
820 | page_base = offset & PAGE_MASK; |
821 | page_offset = offset_in_page(offset); | |
0839ccb8 KP |
822 | page_length = remain; |
823 | if ((page_offset + remain) > PAGE_SIZE) | |
824 | page_length = PAGE_SIZE - page_offset; | |
825 | ||
0839ccb8 | 826 | /* If we get a fault while copying data, then (presumably) our |
3de09aa3 EA |
827 | * source page isn't available. Return the error and we'll |
828 | * retry in the slow path. | |
0839ccb8 | 829 | */ |
5d4545ae | 830 | if (fast_user_write(dev_priv->gtt.mappable, page_base, |
935aaa69 DV |
831 | page_offset, user_data, page_length)) { |
832 | ret = -EFAULT; | |
063e4e6b | 833 | goto out_flush; |
935aaa69 | 834 | } |
673a394b | 835 | |
0839ccb8 KP |
836 | remain -= page_length; |
837 | user_data += page_length; | |
838 | offset += page_length; | |
673a394b | 839 | } |
673a394b | 840 | |
063e4e6b PZ |
841 | out_flush: |
842 | intel_fb_obj_flush(obj, false); | |
935aaa69 | 843 | out_unpin: |
d7f46fc4 | 844 | i915_gem_object_ggtt_unpin(obj); |
935aaa69 | 845 | out: |
3de09aa3 | 846 | return ret; |
673a394b EA |
847 | } |
848 | ||
d174bd64 DV |
849 | /* Per-page copy function for the shmem pwrite fastpath. |
850 | * Flushes invalid cachelines before writing to the target if | |
851 | * needs_clflush_before is set and flushes out any written cachelines after | |
852 | * writing if needs_clflush is set. */ | |
3043c60c | 853 | static int |
d174bd64 DV |
854 | shmem_pwrite_fast(struct page *page, int shmem_page_offset, int page_length, |
855 | char __user *user_data, | |
856 | bool page_do_bit17_swizzling, | |
857 | bool needs_clflush_before, | |
858 | bool needs_clflush_after) | |
673a394b | 859 | { |
d174bd64 | 860 | char *vaddr; |
673a394b | 861 | int ret; |
3de09aa3 | 862 | |
e7e58eb5 | 863 | if (unlikely(page_do_bit17_swizzling)) |
d174bd64 | 864 | return -EINVAL; |
3de09aa3 | 865 | |
d174bd64 DV |
866 | vaddr = kmap_atomic(page); |
867 | if (needs_clflush_before) | |
868 | drm_clflush_virt_range(vaddr + shmem_page_offset, | |
869 | page_length); | |
c2831a94 CW |
870 | ret = __copy_from_user_inatomic(vaddr + shmem_page_offset, |
871 | user_data, page_length); | |
d174bd64 DV |
872 | if (needs_clflush_after) |
873 | drm_clflush_virt_range(vaddr + shmem_page_offset, | |
874 | page_length); | |
875 | kunmap_atomic(vaddr); | |
3de09aa3 | 876 | |
755d2218 | 877 | return ret ? -EFAULT : 0; |
3de09aa3 EA |
878 | } |
879 | ||
d174bd64 DV |
880 | /* Only difference to the fast-path function is that this can handle bit17 |
881 | * and uses non-atomic copy and kmap functions. */ | |
3043c60c | 882 | static int |
d174bd64 DV |
883 | shmem_pwrite_slow(struct page *page, int shmem_page_offset, int page_length, |
884 | char __user *user_data, | |
885 | bool page_do_bit17_swizzling, | |
886 | bool needs_clflush_before, | |
887 | bool needs_clflush_after) | |
673a394b | 888 | { |
d174bd64 DV |
889 | char *vaddr; |
890 | int ret; | |
e5281ccd | 891 | |
d174bd64 | 892 | vaddr = kmap(page); |
e7e58eb5 | 893 | if (unlikely(needs_clflush_before || page_do_bit17_swizzling)) |
23c18c71 DV |
894 | shmem_clflush_swizzled_range(vaddr + shmem_page_offset, |
895 | page_length, | |
896 | page_do_bit17_swizzling); | |
d174bd64 DV |
897 | if (page_do_bit17_swizzling) |
898 | ret = __copy_from_user_swizzled(vaddr, shmem_page_offset, | |
e5281ccd CW |
899 | user_data, |
900 | page_length); | |
d174bd64 DV |
901 | else |
902 | ret = __copy_from_user(vaddr + shmem_page_offset, | |
903 | user_data, | |
904 | page_length); | |
905 | if (needs_clflush_after) | |
23c18c71 DV |
906 | shmem_clflush_swizzled_range(vaddr + shmem_page_offset, |
907 | page_length, | |
908 | page_do_bit17_swizzling); | |
d174bd64 | 909 | kunmap(page); |
40123c1f | 910 | |
755d2218 | 911 | return ret ? -EFAULT : 0; |
40123c1f EA |
912 | } |
913 | ||
40123c1f | 914 | static int |
e244a443 DV |
915 | i915_gem_shmem_pwrite(struct drm_device *dev, |
916 | struct drm_i915_gem_object *obj, | |
917 | struct drm_i915_gem_pwrite *args, | |
918 | struct drm_file *file) | |
40123c1f | 919 | { |
40123c1f | 920 | ssize_t remain; |
8c59967c DV |
921 | loff_t offset; |
922 | char __user *user_data; | |
eb2c0c81 | 923 | int shmem_page_offset, page_length, ret = 0; |
8c59967c | 924 | int obj_do_bit17_swizzling, page_do_bit17_swizzling; |
e244a443 | 925 | int hit_slowpath = 0; |
58642885 DV |
926 | int needs_clflush_after = 0; |
927 | int needs_clflush_before = 0; | |
67d5a50c | 928 | struct sg_page_iter sg_iter; |
40123c1f | 929 | |
2bb4629a | 930 | user_data = to_user_ptr(args->data_ptr); |
40123c1f EA |
931 | remain = args->size; |
932 | ||
8c59967c | 933 | obj_do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
40123c1f | 934 | |
58642885 DV |
935 | if (obj->base.write_domain != I915_GEM_DOMAIN_CPU) { |
936 | /* If we're not in the cpu write domain, set ourself into the gtt | |
937 | * write domain and manually flush cachelines (if required). This | |
938 | * optimizes for the case when the gpu will use the data | |
939 | * right away and we therefore have to clflush anyway. */ | |
2c22569b | 940 | needs_clflush_after = cpu_write_needs_clflush(obj); |
23f54483 BW |
941 | ret = i915_gem_object_wait_rendering(obj, false); |
942 | if (ret) | |
943 | return ret; | |
58642885 | 944 | } |
c76ce038 CW |
945 | /* Same trick applies to invalidate partially written cachelines read |
946 | * before writing. */ | |
947 | if ((obj->base.read_domains & I915_GEM_DOMAIN_CPU) == 0) | |
948 | needs_clflush_before = | |
949 | !cpu_cache_is_coherent(dev, obj->cache_level); | |
58642885 | 950 | |
755d2218 CW |
951 | ret = i915_gem_object_get_pages(obj); |
952 | if (ret) | |
953 | return ret; | |
954 | ||
77a0d1ca | 955 | intel_fb_obj_invalidate(obj, ORIGIN_CPU); |
063e4e6b | 956 | |
755d2218 CW |
957 | i915_gem_object_pin_pages(obj); |
958 | ||
673a394b | 959 | offset = args->offset; |
05394f39 | 960 | obj->dirty = 1; |
673a394b | 961 | |
67d5a50c ID |
962 | for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, |
963 | offset >> PAGE_SHIFT) { | |
2db76d7c | 964 | struct page *page = sg_page_iter_page(&sg_iter); |
58642885 | 965 | int partial_cacheline_write; |
e5281ccd | 966 | |
9da3da66 CW |
967 | if (remain <= 0) |
968 | break; | |
969 | ||
40123c1f EA |
970 | /* Operation in this page |
971 | * | |
40123c1f | 972 | * shmem_page_offset = offset within page in shmem file |
40123c1f EA |
973 | * page_length = bytes to copy for this page |
974 | */ | |
c8cbbb8b | 975 | shmem_page_offset = offset_in_page(offset); |
40123c1f EA |
976 | |
977 | page_length = remain; | |
978 | if ((shmem_page_offset + page_length) > PAGE_SIZE) | |
979 | page_length = PAGE_SIZE - shmem_page_offset; | |
40123c1f | 980 | |
58642885 DV |
981 | /* If we don't overwrite a cacheline completely we need to be |
982 | * careful to have up-to-date data by first clflushing. Don't | |
983 | * overcomplicate things and flush the entire patch. */ | |
984 | partial_cacheline_write = needs_clflush_before && | |
985 | ((shmem_page_offset | page_length) | |
986 | & (boot_cpu_data.x86_clflush_size - 1)); | |
987 | ||
8c59967c DV |
988 | page_do_bit17_swizzling = obj_do_bit17_swizzling && |
989 | (page_to_phys(page) & (1 << 17)) != 0; | |
990 | ||
d174bd64 DV |
991 | ret = shmem_pwrite_fast(page, shmem_page_offset, page_length, |
992 | user_data, page_do_bit17_swizzling, | |
993 | partial_cacheline_write, | |
994 | needs_clflush_after); | |
995 | if (ret == 0) | |
996 | goto next_page; | |
e244a443 DV |
997 | |
998 | hit_slowpath = 1; | |
e244a443 | 999 | mutex_unlock(&dev->struct_mutex); |
d174bd64 DV |
1000 | ret = shmem_pwrite_slow(page, shmem_page_offset, page_length, |
1001 | user_data, page_do_bit17_swizzling, | |
1002 | partial_cacheline_write, | |
1003 | needs_clflush_after); | |
40123c1f | 1004 | |
e244a443 | 1005 | mutex_lock(&dev->struct_mutex); |
755d2218 | 1006 | |
755d2218 | 1007 | if (ret) |
8c59967c | 1008 | goto out; |
8c59967c | 1009 | |
17793c9a | 1010 | next_page: |
40123c1f | 1011 | remain -= page_length; |
8c59967c | 1012 | user_data += page_length; |
40123c1f | 1013 | offset += page_length; |
673a394b EA |
1014 | } |
1015 | ||
fbd5a26d | 1016 | out: |
755d2218 CW |
1017 | i915_gem_object_unpin_pages(obj); |
1018 | ||
e244a443 | 1019 | if (hit_slowpath) { |
8dcf015e DV |
1020 | /* |
1021 | * Fixup: Flush cpu caches in case we didn't flush the dirty | |
1022 | * cachelines in-line while writing and the object moved | |
1023 | * out of the cpu write domain while we've dropped the lock. | |
1024 | */ | |
1025 | if (!needs_clflush_after && | |
1026 | obj->base.write_domain != I915_GEM_DOMAIN_CPU) { | |
000433b6 CW |
1027 | if (i915_gem_clflush_object(obj, obj->pin_display)) |
1028 | i915_gem_chipset_flush(dev); | |
e244a443 | 1029 | } |
8c59967c | 1030 | } |
673a394b | 1031 | |
58642885 | 1032 | if (needs_clflush_after) |
e76e9aeb | 1033 | i915_gem_chipset_flush(dev); |
58642885 | 1034 | |
063e4e6b | 1035 | intel_fb_obj_flush(obj, false); |
40123c1f | 1036 | return ret; |
673a394b EA |
1037 | } |
1038 | ||
1039 | /** | |
1040 | * Writes data to the object referenced by handle. | |
1041 | * | |
1042 | * On error, the contents of the buffer that were to be modified are undefined. | |
1043 | */ | |
1044 | int | |
1045 | i915_gem_pwrite_ioctl(struct drm_device *dev, void *data, | |
fbd5a26d | 1046 | struct drm_file *file) |
673a394b | 1047 | { |
5d77d9c5 | 1048 | struct drm_i915_private *dev_priv = dev->dev_private; |
673a394b | 1049 | struct drm_i915_gem_pwrite *args = data; |
05394f39 | 1050 | struct drm_i915_gem_object *obj; |
51311d0a CW |
1051 | int ret; |
1052 | ||
1053 | if (args->size == 0) | |
1054 | return 0; | |
1055 | ||
1056 | if (!access_ok(VERIFY_READ, | |
2bb4629a | 1057 | to_user_ptr(args->data_ptr), |
51311d0a CW |
1058 | args->size)) |
1059 | return -EFAULT; | |
1060 | ||
d330a953 | 1061 | if (likely(!i915.prefault_disable)) { |
0b74b508 XZ |
1062 | ret = fault_in_multipages_readable(to_user_ptr(args->data_ptr), |
1063 | args->size); | |
1064 | if (ret) | |
1065 | return -EFAULT; | |
1066 | } | |
673a394b | 1067 | |
5d77d9c5 ID |
1068 | intel_runtime_pm_get(dev_priv); |
1069 | ||
fbd5a26d | 1070 | ret = i915_mutex_lock_interruptible(dev); |
1d7cfea1 | 1071 | if (ret) |
5d77d9c5 | 1072 | goto put_rpm; |
1d7cfea1 | 1073 | |
05394f39 | 1074 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
c8725226 | 1075 | if (&obj->base == NULL) { |
1d7cfea1 CW |
1076 | ret = -ENOENT; |
1077 | goto unlock; | |
fbd5a26d | 1078 | } |
673a394b | 1079 | |
7dcd2499 | 1080 | /* Bounds check destination. */ |
05394f39 CW |
1081 | if (args->offset > obj->base.size || |
1082 | args->size > obj->base.size - args->offset) { | |
ce9d419d | 1083 | ret = -EINVAL; |
35b62a89 | 1084 | goto out; |
ce9d419d CW |
1085 | } |
1086 | ||
1286ff73 DV |
1087 | /* prime objects have no backing filp to GEM pread/pwrite |
1088 | * pages from. | |
1089 | */ | |
1090 | if (!obj->base.filp) { | |
1091 | ret = -EINVAL; | |
1092 | goto out; | |
1093 | } | |
1094 | ||
db53a302 CW |
1095 | trace_i915_gem_object_pwrite(obj, args->offset, args->size); |
1096 | ||
935aaa69 | 1097 | ret = -EFAULT; |
673a394b EA |
1098 | /* We can only do the GTT pwrite on untiled buffers, as otherwise |
1099 | * it would end up going through the fenced access, and we'll get | |
1100 | * different detiling behavior between reading and writing. | |
1101 | * pread/pwrite currently are reading and writing from the CPU | |
1102 | * perspective, requiring manual detiling by the client. | |
1103 | */ | |
2c22569b CW |
1104 | if (obj->tiling_mode == I915_TILING_NONE && |
1105 | obj->base.write_domain != I915_GEM_DOMAIN_CPU && | |
1106 | cpu_write_needs_clflush(obj)) { | |
fbd5a26d | 1107 | ret = i915_gem_gtt_pwrite_fast(dev, obj, args, file); |
935aaa69 DV |
1108 | /* Note that the gtt paths might fail with non-page-backed user |
1109 | * pointers (e.g. gtt mappings when moving data between | |
1110 | * textures). Fallback to the shmem path in that case. */ | |
fbd5a26d | 1111 | } |
673a394b | 1112 | |
6a2c4232 CW |
1113 | if (ret == -EFAULT || ret == -ENOSPC) { |
1114 | if (obj->phys_handle) | |
1115 | ret = i915_gem_phys_pwrite(obj, args, file); | |
1116 | else | |
1117 | ret = i915_gem_shmem_pwrite(dev, obj, args, file); | |
1118 | } | |
5c0480f2 | 1119 | |
35b62a89 | 1120 | out: |
05394f39 | 1121 | drm_gem_object_unreference(&obj->base); |
1d7cfea1 | 1122 | unlock: |
fbd5a26d | 1123 | mutex_unlock(&dev->struct_mutex); |
5d77d9c5 ID |
1124 | put_rpm: |
1125 | intel_runtime_pm_put(dev_priv); | |
1126 | ||
673a394b EA |
1127 | return ret; |
1128 | } | |
1129 | ||
b361237b | 1130 | int |
33196ded | 1131 | i915_gem_check_wedge(struct i915_gpu_error *error, |
b361237b CW |
1132 | bool interruptible) |
1133 | { | |
1f83fee0 | 1134 | if (i915_reset_in_progress(error)) { |
b361237b CW |
1135 | /* Non-interruptible callers can't handle -EAGAIN, hence return |
1136 | * -EIO unconditionally for these. */ | |
1137 | if (!interruptible) | |
1138 | return -EIO; | |
1139 | ||
1f83fee0 DV |
1140 | /* Recovery complete, but the reset failed ... */ |
1141 | if (i915_terminally_wedged(error)) | |
b361237b CW |
1142 | return -EIO; |
1143 | ||
6689c167 MA |
1144 | /* |
1145 | * Check if GPU Reset is in progress - we need intel_ring_begin | |
1146 | * to work properly to reinit the hw state while the gpu is | |
1147 | * still marked as reset-in-progress. Handle this with a flag. | |
1148 | */ | |
1149 | if (!error->reload_in_reset) | |
1150 | return -EAGAIN; | |
b361237b CW |
1151 | } |
1152 | ||
1153 | return 0; | |
1154 | } | |
1155 | ||
094f9a54 CW |
1156 | static void fake_irq(unsigned long data) |
1157 | { | |
1158 | wake_up_process((struct task_struct *)data); | |
1159 | } | |
1160 | ||
1161 | static bool missed_irq(struct drm_i915_private *dev_priv, | |
a4872ba6 | 1162 | struct intel_engine_cs *ring) |
094f9a54 CW |
1163 | { |
1164 | return test_bit(ring->id, &dev_priv->gpu_error.missed_irq_rings); | |
1165 | } | |
1166 | ||
eed29a5b | 1167 | static int __i915_spin_request(struct drm_i915_gem_request *req) |
b29c19b6 | 1168 | { |
2def4ad9 CW |
1169 | unsigned long timeout; |
1170 | ||
eed29a5b | 1171 | if (i915_gem_request_get_ring(req)->irq_refcount) |
2def4ad9 CW |
1172 | return -EBUSY; |
1173 | ||
1174 | timeout = jiffies + 1; | |
1175 | while (!need_resched()) { | |
eed29a5b | 1176 | if (i915_gem_request_completed(req, true)) |
2def4ad9 CW |
1177 | return 0; |
1178 | ||
1179 | if (time_after_eq(jiffies, timeout)) | |
1180 | break; | |
b29c19b6 | 1181 | |
2def4ad9 CW |
1182 | cpu_relax_lowlatency(); |
1183 | } | |
eed29a5b | 1184 | if (i915_gem_request_completed(req, false)) |
2def4ad9 CW |
1185 | return 0; |
1186 | ||
1187 | return -EAGAIN; | |
b29c19b6 CW |
1188 | } |
1189 | ||
b361237b | 1190 | /** |
9c654818 JH |
1191 | * __i915_wait_request - wait until execution of request has finished |
1192 | * @req: duh! | |
1193 | * @reset_counter: reset sequence associated with the given request | |
b361237b CW |
1194 | * @interruptible: do an interruptible wait (normally yes) |
1195 | * @timeout: in - how long to wait (NULL forever); out - how much time remaining | |
1196 | * | |
f69061be DV |
1197 | * Note: It is of utmost importance that the passed in seqno and reset_counter |
1198 | * values have been read by the caller in an smp safe manner. Where read-side | |
1199 | * locks are involved, it is sufficient to read the reset_counter before | |
1200 | * unlocking the lock that protects the seqno. For lockless tricks, the | |
1201 | * reset_counter _must_ be read before, and an appropriate smp_rmb must be | |
1202 | * inserted. | |
1203 | * | |
9c654818 | 1204 | * Returns 0 if the request was found within the alloted time. Else returns the |
b361237b CW |
1205 | * errno with remaining time filled in timeout argument. |
1206 | */ | |
9c654818 | 1207 | int __i915_wait_request(struct drm_i915_gem_request *req, |
f69061be | 1208 | unsigned reset_counter, |
b29c19b6 | 1209 | bool interruptible, |
5ed0bdf2 | 1210 | s64 *timeout, |
2e1b8730 | 1211 | struct intel_rps_client *rps) |
b361237b | 1212 | { |
9c654818 | 1213 | struct intel_engine_cs *ring = i915_gem_request_get_ring(req); |
3d13ef2e | 1214 | struct drm_device *dev = ring->dev; |
3e31c6c0 | 1215 | struct drm_i915_private *dev_priv = dev->dev_private; |
168c3f21 MK |
1216 | const bool irq_test_in_progress = |
1217 | ACCESS_ONCE(dev_priv->gpu_error.test_irq_rings) & intel_ring_flag(ring); | |
094f9a54 | 1218 | DEFINE_WAIT(wait); |
47e9766d | 1219 | unsigned long timeout_expire; |
5ed0bdf2 | 1220 | s64 before, now; |
b361237b CW |
1221 | int ret; |
1222 | ||
9df7575f | 1223 | WARN(!intel_irqs_enabled(dev_priv), "IRQs disabled"); |
c67a470b | 1224 | |
b4716185 CW |
1225 | if (list_empty(&req->list)) |
1226 | return 0; | |
1227 | ||
1b5a433a | 1228 | if (i915_gem_request_completed(req, true)) |
b361237b CW |
1229 | return 0; |
1230 | ||
7bd0e226 DV |
1231 | timeout_expire = timeout ? |
1232 | jiffies + nsecs_to_jiffies_timeout((u64)*timeout) : 0; | |
b361237b | 1233 | |
2e1b8730 | 1234 | if (INTEL_INFO(dev_priv)->gen >= 6) |
e61b9958 | 1235 | gen6_rps_boost(dev_priv, rps, req->emitted_jiffies); |
b361237b | 1236 | |
094f9a54 | 1237 | /* Record current time in case interrupted by signal, or wedged */ |
74328ee5 | 1238 | trace_i915_gem_request_wait_begin(req); |
5ed0bdf2 | 1239 | before = ktime_get_raw_ns(); |
2def4ad9 CW |
1240 | |
1241 | /* Optimistic spin for the next jiffie before touching IRQs */ | |
1242 | ret = __i915_spin_request(req); | |
1243 | if (ret == 0) | |
1244 | goto out; | |
1245 | ||
1246 | if (!irq_test_in_progress && WARN_ON(!ring->irq_get(ring))) { | |
1247 | ret = -ENODEV; | |
1248 | goto out; | |
1249 | } | |
1250 | ||
094f9a54 CW |
1251 | for (;;) { |
1252 | struct timer_list timer; | |
b361237b | 1253 | |
094f9a54 CW |
1254 | prepare_to_wait(&ring->irq_queue, &wait, |
1255 | interruptible ? TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE); | |
b361237b | 1256 | |
f69061be DV |
1257 | /* We need to check whether any gpu reset happened in between |
1258 | * the caller grabbing the seqno and now ... */ | |
094f9a54 CW |
1259 | if (reset_counter != atomic_read(&dev_priv->gpu_error.reset_counter)) { |
1260 | /* ... but upgrade the -EAGAIN to an -EIO if the gpu | |
1261 | * is truely gone. */ | |
1262 | ret = i915_gem_check_wedge(&dev_priv->gpu_error, interruptible); | |
1263 | if (ret == 0) | |
1264 | ret = -EAGAIN; | |
1265 | break; | |
1266 | } | |
f69061be | 1267 | |
1b5a433a | 1268 | if (i915_gem_request_completed(req, false)) { |
094f9a54 CW |
1269 | ret = 0; |
1270 | break; | |
1271 | } | |
b361237b | 1272 | |
094f9a54 CW |
1273 | if (interruptible && signal_pending(current)) { |
1274 | ret = -ERESTARTSYS; | |
1275 | break; | |
1276 | } | |
1277 | ||
47e9766d | 1278 | if (timeout && time_after_eq(jiffies, timeout_expire)) { |
094f9a54 CW |
1279 | ret = -ETIME; |
1280 | break; | |
1281 | } | |
1282 | ||
1283 | timer.function = NULL; | |
1284 | if (timeout || missed_irq(dev_priv, ring)) { | |
47e9766d MK |
1285 | unsigned long expire; |
1286 | ||
094f9a54 | 1287 | setup_timer_on_stack(&timer, fake_irq, (unsigned long)current); |
47e9766d | 1288 | expire = missed_irq(dev_priv, ring) ? jiffies + 1 : timeout_expire; |
094f9a54 CW |
1289 | mod_timer(&timer, expire); |
1290 | } | |
1291 | ||
5035c275 | 1292 | io_schedule(); |
094f9a54 | 1293 | |
094f9a54 CW |
1294 | if (timer.function) { |
1295 | del_singleshot_timer_sync(&timer); | |
1296 | destroy_timer_on_stack(&timer); | |
1297 | } | |
1298 | } | |
168c3f21 MK |
1299 | if (!irq_test_in_progress) |
1300 | ring->irq_put(ring); | |
094f9a54 CW |
1301 | |
1302 | finish_wait(&ring->irq_queue, &wait); | |
b361237b | 1303 | |
2def4ad9 CW |
1304 | out: |
1305 | now = ktime_get_raw_ns(); | |
1306 | trace_i915_gem_request_wait_end(req); | |
1307 | ||
b361237b | 1308 | if (timeout) { |
5ed0bdf2 TG |
1309 | s64 tres = *timeout - (now - before); |
1310 | ||
1311 | *timeout = tres < 0 ? 0 : tres; | |
9cca3068 DV |
1312 | |
1313 | /* | |
1314 | * Apparently ktime isn't accurate enough and occasionally has a | |
1315 | * bit of mismatch in the jiffies<->nsecs<->ktime loop. So patch | |
1316 | * things up to make the test happy. We allow up to 1 jiffy. | |
1317 | * | |
1318 | * This is a regrssion from the timespec->ktime conversion. | |
1319 | */ | |
1320 | if (ret == -ETIME && *timeout < jiffies_to_usecs(1)*1000) | |
1321 | *timeout = 0; | |
b361237b CW |
1322 | } |
1323 | ||
094f9a54 | 1324 | return ret; |
b361237b CW |
1325 | } |
1326 | ||
fcfa423c JH |
1327 | int i915_gem_request_add_to_client(struct drm_i915_gem_request *req, |
1328 | struct drm_file *file) | |
1329 | { | |
1330 | struct drm_i915_private *dev_private; | |
1331 | struct drm_i915_file_private *file_priv; | |
1332 | ||
1333 | WARN_ON(!req || !file || req->file_priv); | |
1334 | ||
1335 | if (!req || !file) | |
1336 | return -EINVAL; | |
1337 | ||
1338 | if (req->file_priv) | |
1339 | return -EINVAL; | |
1340 | ||
1341 | dev_private = req->ring->dev->dev_private; | |
1342 | file_priv = file->driver_priv; | |
1343 | ||
1344 | spin_lock(&file_priv->mm.lock); | |
1345 | req->file_priv = file_priv; | |
1346 | list_add_tail(&req->client_list, &file_priv->mm.request_list); | |
1347 | spin_unlock(&file_priv->mm.lock); | |
1348 | ||
1349 | req->pid = get_pid(task_pid(current)); | |
1350 | ||
1351 | return 0; | |
1352 | } | |
1353 | ||
b4716185 CW |
1354 | static inline void |
1355 | i915_gem_request_remove_from_client(struct drm_i915_gem_request *request) | |
1356 | { | |
1357 | struct drm_i915_file_private *file_priv = request->file_priv; | |
1358 | ||
1359 | if (!file_priv) | |
1360 | return; | |
1361 | ||
1362 | spin_lock(&file_priv->mm.lock); | |
1363 | list_del(&request->client_list); | |
1364 | request->file_priv = NULL; | |
1365 | spin_unlock(&file_priv->mm.lock); | |
fcfa423c JH |
1366 | |
1367 | put_pid(request->pid); | |
1368 | request->pid = NULL; | |
b4716185 CW |
1369 | } |
1370 | ||
1371 | static void i915_gem_request_retire(struct drm_i915_gem_request *request) | |
1372 | { | |
1373 | trace_i915_gem_request_retire(request); | |
1374 | ||
1375 | /* We know the GPU must have read the request to have | |
1376 | * sent us the seqno + interrupt, so use the position | |
1377 | * of tail of the request to update the last known position | |
1378 | * of the GPU head. | |
1379 | * | |
1380 | * Note this requires that we are always called in request | |
1381 | * completion order. | |
1382 | */ | |
1383 | request->ringbuf->last_retired_head = request->postfix; | |
1384 | ||
1385 | list_del_init(&request->list); | |
1386 | i915_gem_request_remove_from_client(request); | |
1387 | ||
b4716185 CW |
1388 | i915_gem_request_unreference(request); |
1389 | } | |
1390 | ||
1391 | static void | |
1392 | __i915_gem_request_retire__upto(struct drm_i915_gem_request *req) | |
1393 | { | |
1394 | struct intel_engine_cs *engine = req->ring; | |
1395 | struct drm_i915_gem_request *tmp; | |
1396 | ||
1397 | lockdep_assert_held(&engine->dev->struct_mutex); | |
1398 | ||
1399 | if (list_empty(&req->list)) | |
1400 | return; | |
1401 | ||
1402 | do { | |
1403 | tmp = list_first_entry(&engine->request_list, | |
1404 | typeof(*tmp), list); | |
1405 | ||
1406 | i915_gem_request_retire(tmp); | |
1407 | } while (tmp != req); | |
1408 | ||
1409 | WARN_ON(i915_verify_lists(engine->dev)); | |
1410 | } | |
1411 | ||
b361237b | 1412 | /** |
a4b3a571 | 1413 | * Waits for a request to be signaled, and cleans up the |
b361237b CW |
1414 | * request and object lists appropriately for that event. |
1415 | */ | |
1416 | int | |
a4b3a571 | 1417 | i915_wait_request(struct drm_i915_gem_request *req) |
b361237b | 1418 | { |
a4b3a571 DV |
1419 | struct drm_device *dev; |
1420 | struct drm_i915_private *dev_priv; | |
1421 | bool interruptible; | |
b361237b CW |
1422 | int ret; |
1423 | ||
a4b3a571 DV |
1424 | BUG_ON(req == NULL); |
1425 | ||
1426 | dev = req->ring->dev; | |
1427 | dev_priv = dev->dev_private; | |
1428 | interruptible = dev_priv->mm.interruptible; | |
1429 | ||
b361237b | 1430 | BUG_ON(!mutex_is_locked(&dev->struct_mutex)); |
b361237b | 1431 | |
33196ded | 1432 | ret = i915_gem_check_wedge(&dev_priv->gpu_error, interruptible); |
b361237b CW |
1433 | if (ret) |
1434 | return ret; | |
1435 | ||
b4716185 CW |
1436 | ret = __i915_wait_request(req, |
1437 | atomic_read(&dev_priv->gpu_error.reset_counter), | |
9c654818 | 1438 | interruptible, NULL, NULL); |
b4716185 CW |
1439 | if (ret) |
1440 | return ret; | |
d26e3af8 | 1441 | |
b4716185 | 1442 | __i915_gem_request_retire__upto(req); |
d26e3af8 CW |
1443 | return 0; |
1444 | } | |
1445 | ||
b361237b CW |
1446 | /** |
1447 | * Ensures that all rendering to the object has completed and the object is | |
1448 | * safe to unbind from the GTT or access from the CPU. | |
1449 | */ | |
2e2f351d | 1450 | int |
b361237b CW |
1451 | i915_gem_object_wait_rendering(struct drm_i915_gem_object *obj, |
1452 | bool readonly) | |
1453 | { | |
b4716185 | 1454 | int ret, i; |
b361237b | 1455 | |
b4716185 | 1456 | if (!obj->active) |
b361237b CW |
1457 | return 0; |
1458 | ||
b4716185 CW |
1459 | if (readonly) { |
1460 | if (obj->last_write_req != NULL) { | |
1461 | ret = i915_wait_request(obj->last_write_req); | |
1462 | if (ret) | |
1463 | return ret; | |
b361237b | 1464 | |
b4716185 CW |
1465 | i = obj->last_write_req->ring->id; |
1466 | if (obj->last_read_req[i] == obj->last_write_req) | |
1467 | i915_gem_object_retire__read(obj, i); | |
1468 | else | |
1469 | i915_gem_object_retire__write(obj); | |
1470 | } | |
1471 | } else { | |
1472 | for (i = 0; i < I915_NUM_RINGS; i++) { | |
1473 | if (obj->last_read_req[i] == NULL) | |
1474 | continue; | |
1475 | ||
1476 | ret = i915_wait_request(obj->last_read_req[i]); | |
1477 | if (ret) | |
1478 | return ret; | |
1479 | ||
1480 | i915_gem_object_retire__read(obj, i); | |
1481 | } | |
1482 | RQ_BUG_ON(obj->active); | |
1483 | } | |
1484 | ||
1485 | return 0; | |
1486 | } | |
1487 | ||
1488 | static void | |
1489 | i915_gem_object_retire_request(struct drm_i915_gem_object *obj, | |
1490 | struct drm_i915_gem_request *req) | |
1491 | { | |
1492 | int ring = req->ring->id; | |
1493 | ||
1494 | if (obj->last_read_req[ring] == req) | |
1495 | i915_gem_object_retire__read(obj, ring); | |
1496 | else if (obj->last_write_req == req) | |
1497 | i915_gem_object_retire__write(obj); | |
1498 | ||
1499 | __i915_gem_request_retire__upto(req); | |
b361237b CW |
1500 | } |
1501 | ||
3236f57a CW |
1502 | /* A nonblocking variant of the above wait. This is a highly dangerous routine |
1503 | * as the object state may change during this call. | |
1504 | */ | |
1505 | static __must_check int | |
1506 | i915_gem_object_wait_rendering__nonblocking(struct drm_i915_gem_object *obj, | |
2e1b8730 | 1507 | struct intel_rps_client *rps, |
3236f57a CW |
1508 | bool readonly) |
1509 | { | |
1510 | struct drm_device *dev = obj->base.dev; | |
1511 | struct drm_i915_private *dev_priv = dev->dev_private; | |
b4716185 | 1512 | struct drm_i915_gem_request *requests[I915_NUM_RINGS]; |
f69061be | 1513 | unsigned reset_counter; |
b4716185 | 1514 | int ret, i, n = 0; |
3236f57a CW |
1515 | |
1516 | BUG_ON(!mutex_is_locked(&dev->struct_mutex)); | |
1517 | BUG_ON(!dev_priv->mm.interruptible); | |
1518 | ||
b4716185 | 1519 | if (!obj->active) |
3236f57a CW |
1520 | return 0; |
1521 | ||
33196ded | 1522 | ret = i915_gem_check_wedge(&dev_priv->gpu_error, true); |
3236f57a CW |
1523 | if (ret) |
1524 | return ret; | |
1525 | ||
f69061be | 1526 | reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter); |
b4716185 CW |
1527 | |
1528 | if (readonly) { | |
1529 | struct drm_i915_gem_request *req; | |
1530 | ||
1531 | req = obj->last_write_req; | |
1532 | if (req == NULL) | |
1533 | return 0; | |
1534 | ||
b4716185 CW |
1535 | requests[n++] = i915_gem_request_reference(req); |
1536 | } else { | |
1537 | for (i = 0; i < I915_NUM_RINGS; i++) { | |
1538 | struct drm_i915_gem_request *req; | |
1539 | ||
1540 | req = obj->last_read_req[i]; | |
1541 | if (req == NULL) | |
1542 | continue; | |
1543 | ||
b4716185 CW |
1544 | requests[n++] = i915_gem_request_reference(req); |
1545 | } | |
1546 | } | |
1547 | ||
3236f57a | 1548 | mutex_unlock(&dev->struct_mutex); |
b4716185 CW |
1549 | for (i = 0; ret == 0 && i < n; i++) |
1550 | ret = __i915_wait_request(requests[i], reset_counter, true, | |
2e1b8730 | 1551 | NULL, rps); |
3236f57a CW |
1552 | mutex_lock(&dev->struct_mutex); |
1553 | ||
b4716185 CW |
1554 | for (i = 0; i < n; i++) { |
1555 | if (ret == 0) | |
1556 | i915_gem_object_retire_request(obj, requests[i]); | |
1557 | i915_gem_request_unreference(requests[i]); | |
1558 | } | |
1559 | ||
1560 | return ret; | |
3236f57a CW |
1561 | } |
1562 | ||
2e1b8730 CW |
1563 | static struct intel_rps_client *to_rps_client(struct drm_file *file) |
1564 | { | |
1565 | struct drm_i915_file_private *fpriv = file->driver_priv; | |
1566 | return &fpriv->rps; | |
1567 | } | |
1568 | ||
673a394b | 1569 | /** |
2ef7eeaa EA |
1570 | * Called when user space prepares to use an object with the CPU, either |
1571 | * through the mmap ioctl's mapping or a GTT mapping. | |
673a394b EA |
1572 | */ |
1573 | int | |
1574 | i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, | |
05394f39 | 1575 | struct drm_file *file) |
673a394b EA |
1576 | { |
1577 | struct drm_i915_gem_set_domain *args = data; | |
05394f39 | 1578 | struct drm_i915_gem_object *obj; |
2ef7eeaa EA |
1579 | uint32_t read_domains = args->read_domains; |
1580 | uint32_t write_domain = args->write_domain; | |
673a394b EA |
1581 | int ret; |
1582 | ||
2ef7eeaa | 1583 | /* Only handle setting domains to types used by the CPU. */ |
21d509e3 | 1584 | if (write_domain & I915_GEM_GPU_DOMAINS) |
2ef7eeaa EA |
1585 | return -EINVAL; |
1586 | ||
21d509e3 | 1587 | if (read_domains & I915_GEM_GPU_DOMAINS) |
2ef7eeaa EA |
1588 | return -EINVAL; |
1589 | ||
1590 | /* Having something in the write domain implies it's in the read | |
1591 | * domain, and only that read domain. Enforce that in the request. | |
1592 | */ | |
1593 | if (write_domain != 0 && read_domains != write_domain) | |
1594 | return -EINVAL; | |
1595 | ||
76c1dec1 | 1596 | ret = i915_mutex_lock_interruptible(dev); |
1d7cfea1 | 1597 | if (ret) |
76c1dec1 | 1598 | return ret; |
1d7cfea1 | 1599 | |
05394f39 | 1600 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
c8725226 | 1601 | if (&obj->base == NULL) { |
1d7cfea1 CW |
1602 | ret = -ENOENT; |
1603 | goto unlock; | |
76c1dec1 | 1604 | } |
673a394b | 1605 | |
3236f57a CW |
1606 | /* Try to flush the object off the GPU without holding the lock. |
1607 | * We will repeat the flush holding the lock in the normal manner | |
1608 | * to catch cases where we are gazumped. | |
1609 | */ | |
6e4930f6 | 1610 | ret = i915_gem_object_wait_rendering__nonblocking(obj, |
2e1b8730 | 1611 | to_rps_client(file), |
6e4930f6 | 1612 | !write_domain); |
3236f57a CW |
1613 | if (ret) |
1614 | goto unref; | |
1615 | ||
43566ded | 1616 | if (read_domains & I915_GEM_DOMAIN_GTT) |
2ef7eeaa | 1617 | ret = i915_gem_object_set_to_gtt_domain(obj, write_domain != 0); |
43566ded | 1618 | else |
e47c68e9 | 1619 | ret = i915_gem_object_set_to_cpu_domain(obj, write_domain != 0); |
2ef7eeaa | 1620 | |
031b698a DV |
1621 | if (write_domain != 0) |
1622 | intel_fb_obj_invalidate(obj, | |
1623 | write_domain == I915_GEM_DOMAIN_GTT ? | |
1624 | ORIGIN_GTT : ORIGIN_CPU); | |
1625 | ||
3236f57a | 1626 | unref: |
05394f39 | 1627 | drm_gem_object_unreference(&obj->base); |
1d7cfea1 | 1628 | unlock: |
673a394b EA |
1629 | mutex_unlock(&dev->struct_mutex); |
1630 | return ret; | |
1631 | } | |
1632 | ||
1633 | /** | |
1634 | * Called when user space has done writes to this buffer | |
1635 | */ | |
1636 | int | |
1637 | i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data, | |
05394f39 | 1638 | struct drm_file *file) |
673a394b EA |
1639 | { |
1640 | struct drm_i915_gem_sw_finish *args = data; | |
05394f39 | 1641 | struct drm_i915_gem_object *obj; |
673a394b EA |
1642 | int ret = 0; |
1643 | ||
76c1dec1 | 1644 | ret = i915_mutex_lock_interruptible(dev); |
1d7cfea1 | 1645 | if (ret) |
76c1dec1 | 1646 | return ret; |
1d7cfea1 | 1647 | |
05394f39 | 1648 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
c8725226 | 1649 | if (&obj->base == NULL) { |
1d7cfea1 CW |
1650 | ret = -ENOENT; |
1651 | goto unlock; | |
673a394b EA |
1652 | } |
1653 | ||
673a394b | 1654 | /* Pinned buffers may be scanout, so flush the cache */ |
2c22569b | 1655 | if (obj->pin_display) |
e62b59e4 | 1656 | i915_gem_object_flush_cpu_write_domain(obj); |
e47c68e9 | 1657 | |
05394f39 | 1658 | drm_gem_object_unreference(&obj->base); |
1d7cfea1 | 1659 | unlock: |
673a394b EA |
1660 | mutex_unlock(&dev->struct_mutex); |
1661 | return ret; | |
1662 | } | |
1663 | ||
1664 | /** | |
1665 | * Maps the contents of an object, returning the address it is mapped | |
1666 | * into. | |
1667 | * | |
1668 | * While the mapping holds a reference on the contents of the object, it doesn't | |
1669 | * imply a ref on the object itself. | |
34367381 DV |
1670 | * |
1671 | * IMPORTANT: | |
1672 | * | |
1673 | * DRM driver writers who look a this function as an example for how to do GEM | |
1674 | * mmap support, please don't implement mmap support like here. The modern way | |
1675 | * to implement DRM mmap support is with an mmap offset ioctl (like | |
1676 | * i915_gem_mmap_gtt) and then using the mmap syscall on the DRM fd directly. | |
1677 | * That way debug tooling like valgrind will understand what's going on, hiding | |
1678 | * the mmap call in a driver private ioctl will break that. The i915 driver only | |
1679 | * does cpu mmaps this way because we didn't know better. | |
673a394b EA |
1680 | */ |
1681 | int | |
1682 | i915_gem_mmap_ioctl(struct drm_device *dev, void *data, | |
05394f39 | 1683 | struct drm_file *file) |
673a394b EA |
1684 | { |
1685 | struct drm_i915_gem_mmap *args = data; | |
1686 | struct drm_gem_object *obj; | |
673a394b EA |
1687 | unsigned long addr; |
1688 | ||
1816f923 AG |
1689 | if (args->flags & ~(I915_MMAP_WC)) |
1690 | return -EINVAL; | |
1691 | ||
1692 | if (args->flags & I915_MMAP_WC && !cpu_has_pat) | |
1693 | return -ENODEV; | |
1694 | ||
05394f39 | 1695 | obj = drm_gem_object_lookup(dev, file, args->handle); |
673a394b | 1696 | if (obj == NULL) |
bf79cb91 | 1697 | return -ENOENT; |
673a394b | 1698 | |
1286ff73 DV |
1699 | /* prime objects have no backing filp to GEM mmap |
1700 | * pages from. | |
1701 | */ | |
1702 | if (!obj->filp) { | |
1703 | drm_gem_object_unreference_unlocked(obj); | |
1704 | return -EINVAL; | |
1705 | } | |
1706 | ||
6be5ceb0 | 1707 | addr = vm_mmap(obj->filp, 0, args->size, |
673a394b EA |
1708 | PROT_READ | PROT_WRITE, MAP_SHARED, |
1709 | args->offset); | |
1816f923 AG |
1710 | if (args->flags & I915_MMAP_WC) { |
1711 | struct mm_struct *mm = current->mm; | |
1712 | struct vm_area_struct *vma; | |
1713 | ||
1714 | down_write(&mm->mmap_sem); | |
1715 | vma = find_vma(mm, addr); | |
1716 | if (vma) | |
1717 | vma->vm_page_prot = | |
1718 | pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); | |
1719 | else | |
1720 | addr = -ENOMEM; | |
1721 | up_write(&mm->mmap_sem); | |
1722 | } | |
bc9025bd | 1723 | drm_gem_object_unreference_unlocked(obj); |
673a394b EA |
1724 | if (IS_ERR((void *)addr)) |
1725 | return addr; | |
1726 | ||
1727 | args->addr_ptr = (uint64_t) addr; | |
1728 | ||
1729 | return 0; | |
1730 | } | |
1731 | ||
de151cf6 JB |
1732 | /** |
1733 | * i915_gem_fault - fault a page into the GTT | |
1734 | * vma: VMA in question | |
1735 | * vmf: fault info | |
1736 | * | |
1737 | * The fault handler is set up by drm_gem_mmap() when a object is GTT mapped | |
1738 | * from userspace. The fault handler takes care of binding the object to | |
1739 | * the GTT (if needed), allocating and programming a fence register (again, | |
1740 | * only if needed based on whether the old reg is still valid or the object | |
1741 | * is tiled) and inserting a new PTE into the faulting process. | |
1742 | * | |
1743 | * Note that the faulting process may involve evicting existing objects | |
1744 | * from the GTT and/or fence registers to make room. So performance may | |
1745 | * suffer if the GTT working set is large or there are few fence registers | |
1746 | * left. | |
1747 | */ | |
1748 | int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
1749 | { | |
05394f39 CW |
1750 | struct drm_i915_gem_object *obj = to_intel_bo(vma->vm_private_data); |
1751 | struct drm_device *dev = obj->base.dev; | |
3e31c6c0 | 1752 | struct drm_i915_private *dev_priv = dev->dev_private; |
c5ad54cf | 1753 | struct i915_ggtt_view view = i915_ggtt_view_normal; |
de151cf6 JB |
1754 | pgoff_t page_offset; |
1755 | unsigned long pfn; | |
1756 | int ret = 0; | |
0f973f27 | 1757 | bool write = !!(vmf->flags & FAULT_FLAG_WRITE); |
de151cf6 | 1758 | |
f65c9168 PZ |
1759 | intel_runtime_pm_get(dev_priv); |
1760 | ||
de151cf6 JB |
1761 | /* We don't use vmf->pgoff since that has the fake offset */ |
1762 | page_offset = ((unsigned long)vmf->virtual_address - vma->vm_start) >> | |
1763 | PAGE_SHIFT; | |
1764 | ||
d9bc7e9f CW |
1765 | ret = i915_mutex_lock_interruptible(dev); |
1766 | if (ret) | |
1767 | goto out; | |
a00b10c3 | 1768 | |
db53a302 CW |
1769 | trace_i915_gem_object_fault(obj, page_offset, true, write); |
1770 | ||
6e4930f6 CW |
1771 | /* Try to flush the object off the GPU first without holding the lock. |
1772 | * Upon reacquiring the lock, we will perform our sanity checks and then | |
1773 | * repeat the flush holding the lock in the normal manner to catch cases | |
1774 | * where we are gazumped. | |
1775 | */ | |
1776 | ret = i915_gem_object_wait_rendering__nonblocking(obj, NULL, !write); | |
1777 | if (ret) | |
1778 | goto unlock; | |
1779 | ||
eb119bd6 CW |
1780 | /* Access to snoopable pages through the GTT is incoherent. */ |
1781 | if (obj->cache_level != I915_CACHE_NONE && !HAS_LLC(dev)) { | |
ddeff6ee | 1782 | ret = -EFAULT; |
eb119bd6 CW |
1783 | goto unlock; |
1784 | } | |
1785 | ||
c5ad54cf | 1786 | /* Use a partial view if the object is bigger than the aperture. */ |
e7ded2d7 JL |
1787 | if (obj->base.size >= dev_priv->gtt.mappable_end && |
1788 | obj->tiling_mode == I915_TILING_NONE) { | |
c5ad54cf | 1789 | static const unsigned int chunk_size = 256; // 1 MiB |
e7ded2d7 | 1790 | |
c5ad54cf JL |
1791 | memset(&view, 0, sizeof(view)); |
1792 | view.type = I915_GGTT_VIEW_PARTIAL; | |
1793 | view.params.partial.offset = rounddown(page_offset, chunk_size); | |
1794 | view.params.partial.size = | |
1795 | min_t(unsigned int, | |
1796 | chunk_size, | |
1797 | (vma->vm_end - vma->vm_start)/PAGE_SIZE - | |
1798 | view.params.partial.offset); | |
1799 | } | |
1800 | ||
1801 | /* Now pin it into the GTT if needed */ | |
1802 | ret = i915_gem_object_ggtt_pin(obj, &view, 0, PIN_MAPPABLE); | |
c9839303 CW |
1803 | if (ret) |
1804 | goto unlock; | |
4a684a41 | 1805 | |
c9839303 CW |
1806 | ret = i915_gem_object_set_to_gtt_domain(obj, write); |
1807 | if (ret) | |
1808 | goto unpin; | |
74898d7e | 1809 | |
06d98131 | 1810 | ret = i915_gem_object_get_fence(obj); |
d9e86c0e | 1811 | if (ret) |
c9839303 | 1812 | goto unpin; |
7d1c4804 | 1813 | |
b90b91d8 | 1814 | /* Finally, remap it using the new GTT offset */ |
c5ad54cf JL |
1815 | pfn = dev_priv->gtt.mappable_base + |
1816 | i915_gem_obj_ggtt_offset_view(obj, &view); | |
f343c5f6 | 1817 | pfn >>= PAGE_SHIFT; |
de151cf6 | 1818 | |
c5ad54cf JL |
1819 | if (unlikely(view.type == I915_GGTT_VIEW_PARTIAL)) { |
1820 | /* Overriding existing pages in partial view does not cause | |
1821 | * us any trouble as TLBs are still valid because the fault | |
1822 | * is due to userspace losing part of the mapping or never | |
1823 | * having accessed it before (at this partials' range). | |
1824 | */ | |
1825 | unsigned long base = vma->vm_start + | |
1826 | (view.params.partial.offset << PAGE_SHIFT); | |
1827 | unsigned int i; | |
b90b91d8 | 1828 | |
c5ad54cf JL |
1829 | for (i = 0; i < view.params.partial.size; i++) { |
1830 | ret = vm_insert_pfn(vma, base + i * PAGE_SIZE, pfn + i); | |
b90b91d8 CW |
1831 | if (ret) |
1832 | break; | |
1833 | } | |
1834 | ||
1835 | obj->fault_mappable = true; | |
c5ad54cf JL |
1836 | } else { |
1837 | if (!obj->fault_mappable) { | |
1838 | unsigned long size = min_t(unsigned long, | |
1839 | vma->vm_end - vma->vm_start, | |
1840 | obj->base.size); | |
1841 | int i; | |
1842 | ||
1843 | for (i = 0; i < size >> PAGE_SHIFT; i++) { | |
1844 | ret = vm_insert_pfn(vma, | |
1845 | (unsigned long)vma->vm_start + i * PAGE_SIZE, | |
1846 | pfn + i); | |
1847 | if (ret) | |
1848 | break; | |
1849 | } | |
1850 | ||
1851 | obj->fault_mappable = true; | |
1852 | } else | |
1853 | ret = vm_insert_pfn(vma, | |
1854 | (unsigned long)vmf->virtual_address, | |
1855 | pfn + page_offset); | |
1856 | } | |
c9839303 | 1857 | unpin: |
c5ad54cf | 1858 | i915_gem_object_ggtt_unpin_view(obj, &view); |
c715089f | 1859 | unlock: |
de151cf6 | 1860 | mutex_unlock(&dev->struct_mutex); |
d9bc7e9f | 1861 | out: |
de151cf6 | 1862 | switch (ret) { |
d9bc7e9f | 1863 | case -EIO: |
2232f031 DV |
1864 | /* |
1865 | * We eat errors when the gpu is terminally wedged to avoid | |
1866 | * userspace unduly crashing (gl has no provisions for mmaps to | |
1867 | * fail). But any other -EIO isn't ours (e.g. swap in failure) | |
1868 | * and so needs to be reported. | |
1869 | */ | |
1870 | if (!i915_terminally_wedged(&dev_priv->gpu_error)) { | |
f65c9168 PZ |
1871 | ret = VM_FAULT_SIGBUS; |
1872 | break; | |
1873 | } | |
045e769a | 1874 | case -EAGAIN: |
571c608d DV |
1875 | /* |
1876 | * EAGAIN means the gpu is hung and we'll wait for the error | |
1877 | * handler to reset everything when re-faulting in | |
1878 | * i915_mutex_lock_interruptible. | |
d9bc7e9f | 1879 | */ |
c715089f CW |
1880 | case 0: |
1881 | case -ERESTARTSYS: | |
bed636ab | 1882 | case -EINTR: |
e79e0fe3 DR |
1883 | case -EBUSY: |
1884 | /* | |
1885 | * EBUSY is ok: this just means that another thread | |
1886 | * already did the job. | |
1887 | */ | |
f65c9168 PZ |
1888 | ret = VM_FAULT_NOPAGE; |
1889 | break; | |
de151cf6 | 1890 | case -ENOMEM: |
f65c9168 PZ |
1891 | ret = VM_FAULT_OOM; |
1892 | break; | |
a7c2e1aa | 1893 | case -ENOSPC: |
45d67817 | 1894 | case -EFAULT: |
f65c9168 PZ |
1895 | ret = VM_FAULT_SIGBUS; |
1896 | break; | |
de151cf6 | 1897 | default: |
a7c2e1aa | 1898 | WARN_ONCE(ret, "unhandled error in i915_gem_fault: %i\n", ret); |
f65c9168 PZ |
1899 | ret = VM_FAULT_SIGBUS; |
1900 | break; | |
de151cf6 | 1901 | } |
f65c9168 PZ |
1902 | |
1903 | intel_runtime_pm_put(dev_priv); | |
1904 | return ret; | |
de151cf6 JB |
1905 | } |
1906 | ||
901782b2 CW |
1907 | /** |
1908 | * i915_gem_release_mmap - remove physical page mappings | |
1909 | * @obj: obj in question | |
1910 | * | |
af901ca1 | 1911 | * Preserve the reservation of the mmapping with the DRM core code, but |
901782b2 CW |
1912 | * relinquish ownership of the pages back to the system. |
1913 | * | |
1914 | * It is vital that we remove the page mapping if we have mapped a tiled | |
1915 | * object through the GTT and then lose the fence register due to | |
1916 | * resource pressure. Similarly if the object has been moved out of the | |
1917 | * aperture, than pages mapped into userspace must be revoked. Removing the | |
1918 | * mapping will then trigger a page fault on the next user access, allowing | |
1919 | * fixup by i915_gem_fault(). | |
1920 | */ | |
d05ca301 | 1921 | void |
05394f39 | 1922 | i915_gem_release_mmap(struct drm_i915_gem_object *obj) |
901782b2 | 1923 | { |
6299f992 CW |
1924 | if (!obj->fault_mappable) |
1925 | return; | |
901782b2 | 1926 | |
6796cb16 DH |
1927 | drm_vma_node_unmap(&obj->base.vma_node, |
1928 | obj->base.dev->anon_inode->i_mapping); | |
6299f992 | 1929 | obj->fault_mappable = false; |
901782b2 CW |
1930 | } |
1931 | ||
eedd10f4 CW |
1932 | void |
1933 | i915_gem_release_all_mmaps(struct drm_i915_private *dev_priv) | |
1934 | { | |
1935 | struct drm_i915_gem_object *obj; | |
1936 | ||
1937 | list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) | |
1938 | i915_gem_release_mmap(obj); | |
1939 | } | |
1940 | ||
0fa87796 | 1941 | uint32_t |
e28f8711 | 1942 | i915_gem_get_gtt_size(struct drm_device *dev, uint32_t size, int tiling_mode) |
92b88aeb | 1943 | { |
e28f8711 | 1944 | uint32_t gtt_size; |
92b88aeb CW |
1945 | |
1946 | if (INTEL_INFO(dev)->gen >= 4 || | |
e28f8711 CW |
1947 | tiling_mode == I915_TILING_NONE) |
1948 | return size; | |
92b88aeb CW |
1949 | |
1950 | /* Previous chips need a power-of-two fence region when tiling */ | |
1951 | if (INTEL_INFO(dev)->gen == 3) | |
e28f8711 | 1952 | gtt_size = 1024*1024; |
92b88aeb | 1953 | else |
e28f8711 | 1954 | gtt_size = 512*1024; |
92b88aeb | 1955 | |
e28f8711 CW |
1956 | while (gtt_size < size) |
1957 | gtt_size <<= 1; | |
92b88aeb | 1958 | |
e28f8711 | 1959 | return gtt_size; |
92b88aeb CW |
1960 | } |
1961 | ||
de151cf6 JB |
1962 | /** |
1963 | * i915_gem_get_gtt_alignment - return required GTT alignment for an object | |
1964 | * @obj: object to check | |
1965 | * | |
1966 | * Return the required GTT alignment for an object, taking into account | |
5e783301 | 1967 | * potential fence register mapping. |
de151cf6 | 1968 | */ |
d865110c ID |
1969 | uint32_t |
1970 | i915_gem_get_gtt_alignment(struct drm_device *dev, uint32_t size, | |
1971 | int tiling_mode, bool fenced) | |
de151cf6 | 1972 | { |
de151cf6 JB |
1973 | /* |
1974 | * Minimum alignment is 4k (GTT page size), but might be greater | |
1975 | * if a fence register is needed for the object. | |
1976 | */ | |
d865110c | 1977 | if (INTEL_INFO(dev)->gen >= 4 || (!fenced && IS_G33(dev)) || |
e28f8711 | 1978 | tiling_mode == I915_TILING_NONE) |
de151cf6 JB |
1979 | return 4096; |
1980 | ||
a00b10c3 CW |
1981 | /* |
1982 | * Previous chips need to be aligned to the size of the smallest | |
1983 | * fence register that can contain the object. | |
1984 | */ | |
e28f8711 | 1985 | return i915_gem_get_gtt_size(dev, size, tiling_mode); |
a00b10c3 CW |
1986 | } |
1987 | ||
d8cb5086 CW |
1988 | static int i915_gem_object_create_mmap_offset(struct drm_i915_gem_object *obj) |
1989 | { | |
1990 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; | |
1991 | int ret; | |
1992 | ||
0de23977 | 1993 | if (drm_vma_node_has_offset(&obj->base.vma_node)) |
d8cb5086 CW |
1994 | return 0; |
1995 | ||
da494d7c DV |
1996 | dev_priv->mm.shrinker_no_lock_stealing = true; |
1997 | ||
d8cb5086 CW |
1998 | ret = drm_gem_create_mmap_offset(&obj->base); |
1999 | if (ret != -ENOSPC) | |
da494d7c | 2000 | goto out; |
d8cb5086 CW |
2001 | |
2002 | /* Badly fragmented mmap space? The only way we can recover | |
2003 | * space is by destroying unwanted objects. We can't randomly release | |
2004 | * mmap_offsets as userspace expects them to be persistent for the | |
2005 | * lifetime of the objects. The closest we can is to release the | |
2006 | * offsets on purgeable objects by truncating it and marking it purged, | |
2007 | * which prevents userspace from ever using that object again. | |
2008 | */ | |
21ab4e74 CW |
2009 | i915_gem_shrink(dev_priv, |
2010 | obj->base.size >> PAGE_SHIFT, | |
2011 | I915_SHRINK_BOUND | | |
2012 | I915_SHRINK_UNBOUND | | |
2013 | I915_SHRINK_PURGEABLE); | |
d8cb5086 CW |
2014 | ret = drm_gem_create_mmap_offset(&obj->base); |
2015 | if (ret != -ENOSPC) | |
da494d7c | 2016 | goto out; |
d8cb5086 CW |
2017 | |
2018 | i915_gem_shrink_all(dev_priv); | |
da494d7c DV |
2019 | ret = drm_gem_create_mmap_offset(&obj->base); |
2020 | out: | |
2021 | dev_priv->mm.shrinker_no_lock_stealing = false; | |
2022 | ||
2023 | return ret; | |
d8cb5086 CW |
2024 | } |
2025 | ||
2026 | static void i915_gem_object_free_mmap_offset(struct drm_i915_gem_object *obj) | |
2027 | { | |
d8cb5086 CW |
2028 | drm_gem_free_mmap_offset(&obj->base); |
2029 | } | |
2030 | ||
da6b51d0 | 2031 | int |
ff72145b DA |
2032 | i915_gem_mmap_gtt(struct drm_file *file, |
2033 | struct drm_device *dev, | |
da6b51d0 | 2034 | uint32_t handle, |
ff72145b | 2035 | uint64_t *offset) |
de151cf6 | 2036 | { |
05394f39 | 2037 | struct drm_i915_gem_object *obj; |
de151cf6 JB |
2038 | int ret; |
2039 | ||
76c1dec1 | 2040 | ret = i915_mutex_lock_interruptible(dev); |
1d7cfea1 | 2041 | if (ret) |
76c1dec1 | 2042 | return ret; |
de151cf6 | 2043 | |
ff72145b | 2044 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, handle)); |
c8725226 | 2045 | if (&obj->base == NULL) { |
1d7cfea1 CW |
2046 | ret = -ENOENT; |
2047 | goto unlock; | |
2048 | } | |
de151cf6 | 2049 | |
05394f39 | 2050 | if (obj->madv != I915_MADV_WILLNEED) { |
bd9b6a4e | 2051 | DRM_DEBUG("Attempting to mmap a purgeable buffer\n"); |
8c99e57d | 2052 | ret = -EFAULT; |
1d7cfea1 | 2053 | goto out; |
ab18282d CW |
2054 | } |
2055 | ||
d8cb5086 CW |
2056 | ret = i915_gem_object_create_mmap_offset(obj); |
2057 | if (ret) | |
2058 | goto out; | |
de151cf6 | 2059 | |
0de23977 | 2060 | *offset = drm_vma_node_offset_addr(&obj->base.vma_node); |
de151cf6 | 2061 | |
1d7cfea1 | 2062 | out: |
05394f39 | 2063 | drm_gem_object_unreference(&obj->base); |
1d7cfea1 | 2064 | unlock: |
de151cf6 | 2065 | mutex_unlock(&dev->struct_mutex); |
1d7cfea1 | 2066 | return ret; |
de151cf6 JB |
2067 | } |
2068 | ||
ff72145b DA |
2069 | /** |
2070 | * i915_gem_mmap_gtt_ioctl - prepare an object for GTT mmap'ing | |
2071 | * @dev: DRM device | |
2072 | * @data: GTT mapping ioctl data | |
2073 | * @file: GEM object info | |
2074 | * | |
2075 | * Simply returns the fake offset to userspace so it can mmap it. | |
2076 | * The mmap call will end up in drm_gem_mmap(), which will set things | |
2077 | * up so we can get faults in the handler above. | |
2078 | * | |
2079 | * The fault handler will take care of binding the object into the GTT | |
2080 | * (since it may have been evicted to make room for something), allocating | |
2081 | * a fence register, and mapping the appropriate aperture address into | |
2082 | * userspace. | |
2083 | */ | |
2084 | int | |
2085 | i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data, | |
2086 | struct drm_file *file) | |
2087 | { | |
2088 | struct drm_i915_gem_mmap_gtt *args = data; | |
2089 | ||
da6b51d0 | 2090 | return i915_gem_mmap_gtt(file, dev, args->handle, &args->offset); |
ff72145b DA |
2091 | } |
2092 | ||
225067ee DV |
2093 | /* Immediately discard the backing storage */ |
2094 | static void | |
2095 | i915_gem_object_truncate(struct drm_i915_gem_object *obj) | |
e5281ccd | 2096 | { |
4d6294bf | 2097 | i915_gem_object_free_mmap_offset(obj); |
1286ff73 | 2098 | |
4d6294bf CW |
2099 | if (obj->base.filp == NULL) |
2100 | return; | |
e5281ccd | 2101 | |
225067ee DV |
2102 | /* Our goal here is to return as much of the memory as |
2103 | * is possible back to the system as we are called from OOM. | |
2104 | * To do this we must instruct the shmfs to drop all of its | |
2105 | * backing pages, *now*. | |
2106 | */ | |
5537252b | 2107 | shmem_truncate_range(file_inode(obj->base.filp), 0, (loff_t)-1); |
225067ee DV |
2108 | obj->madv = __I915_MADV_PURGED; |
2109 | } | |
e5281ccd | 2110 | |
5537252b CW |
2111 | /* Try to discard unwanted pages */ |
2112 | static void | |
2113 | i915_gem_object_invalidate(struct drm_i915_gem_object *obj) | |
225067ee | 2114 | { |
5537252b CW |
2115 | struct address_space *mapping; |
2116 | ||
2117 | switch (obj->madv) { | |
2118 | case I915_MADV_DONTNEED: | |
2119 | i915_gem_object_truncate(obj); | |
2120 | case __I915_MADV_PURGED: | |
2121 | return; | |
2122 | } | |
2123 | ||
2124 | if (obj->base.filp == NULL) | |
2125 | return; | |
2126 | ||
2127 | mapping = file_inode(obj->base.filp)->i_mapping, | |
2128 | invalidate_mapping_pages(mapping, 0, (loff_t)-1); | |
e5281ccd CW |
2129 | } |
2130 | ||
5cdf5881 | 2131 | static void |
05394f39 | 2132 | i915_gem_object_put_pages_gtt(struct drm_i915_gem_object *obj) |
673a394b | 2133 | { |
90797e6d ID |
2134 | struct sg_page_iter sg_iter; |
2135 | int ret; | |
1286ff73 | 2136 | |
05394f39 | 2137 | BUG_ON(obj->madv == __I915_MADV_PURGED); |
673a394b | 2138 | |
6c085a72 CW |
2139 | ret = i915_gem_object_set_to_cpu_domain(obj, true); |
2140 | if (ret) { | |
2141 | /* In the event of a disaster, abandon all caches and | |
2142 | * hope for the best. | |
2143 | */ | |
2144 | WARN_ON(ret != -EIO); | |
2c22569b | 2145 | i915_gem_clflush_object(obj, true); |
6c085a72 CW |
2146 | obj->base.read_domains = obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
2147 | } | |
2148 | ||
6dacfd2f | 2149 | if (i915_gem_object_needs_bit17_swizzle(obj)) |
280b713b EA |
2150 | i915_gem_object_save_bit_17_swizzle(obj); |
2151 | ||
05394f39 CW |
2152 | if (obj->madv == I915_MADV_DONTNEED) |
2153 | obj->dirty = 0; | |
3ef94daa | 2154 | |
90797e6d | 2155 | for_each_sg_page(obj->pages->sgl, &sg_iter, obj->pages->nents, 0) { |
2db76d7c | 2156 | struct page *page = sg_page_iter_page(&sg_iter); |
9da3da66 | 2157 | |
05394f39 | 2158 | if (obj->dirty) |
9da3da66 | 2159 | set_page_dirty(page); |
3ef94daa | 2160 | |
05394f39 | 2161 | if (obj->madv == I915_MADV_WILLNEED) |
9da3da66 | 2162 | mark_page_accessed(page); |
3ef94daa | 2163 | |
9da3da66 | 2164 | page_cache_release(page); |
3ef94daa | 2165 | } |
05394f39 | 2166 | obj->dirty = 0; |
673a394b | 2167 | |
9da3da66 CW |
2168 | sg_free_table(obj->pages); |
2169 | kfree(obj->pages); | |
37e680a1 | 2170 | } |
6c085a72 | 2171 | |
dd624afd | 2172 | int |
37e680a1 CW |
2173 | i915_gem_object_put_pages(struct drm_i915_gem_object *obj) |
2174 | { | |
2175 | const struct drm_i915_gem_object_ops *ops = obj->ops; | |
2176 | ||
2f745ad3 | 2177 | if (obj->pages == NULL) |
37e680a1 CW |
2178 | return 0; |
2179 | ||
a5570178 CW |
2180 | if (obj->pages_pin_count) |
2181 | return -EBUSY; | |
2182 | ||
9843877d | 2183 | BUG_ON(i915_gem_obj_bound_any(obj)); |
3e123027 | 2184 | |
a2165e31 CW |
2185 | /* ->put_pages might need to allocate memory for the bit17 swizzle |
2186 | * array, hence protect them from being reaped by removing them from gtt | |
2187 | * lists early. */ | |
35c20a60 | 2188 | list_del(&obj->global_list); |
a2165e31 | 2189 | |
37e680a1 | 2190 | ops->put_pages(obj); |
05394f39 | 2191 | obj->pages = NULL; |
37e680a1 | 2192 | |
5537252b | 2193 | i915_gem_object_invalidate(obj); |
6c085a72 CW |
2194 | |
2195 | return 0; | |
2196 | } | |
2197 | ||
37e680a1 | 2198 | static int |
6c085a72 | 2199 | i915_gem_object_get_pages_gtt(struct drm_i915_gem_object *obj) |
e5281ccd | 2200 | { |
6c085a72 | 2201 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
e5281ccd CW |
2202 | int page_count, i; |
2203 | struct address_space *mapping; | |
9da3da66 CW |
2204 | struct sg_table *st; |
2205 | struct scatterlist *sg; | |
90797e6d | 2206 | struct sg_page_iter sg_iter; |
e5281ccd | 2207 | struct page *page; |
90797e6d | 2208 | unsigned long last_pfn = 0; /* suppress gcc warning */ |
6c085a72 | 2209 | gfp_t gfp; |
e5281ccd | 2210 | |
6c085a72 CW |
2211 | /* Assert that the object is not currently in any GPU domain. As it |
2212 | * wasn't in the GTT, there shouldn't be any way it could have been in | |
2213 | * a GPU cache | |
2214 | */ | |
2215 | BUG_ON(obj->base.read_domains & I915_GEM_GPU_DOMAINS); | |
2216 | BUG_ON(obj->base.write_domain & I915_GEM_GPU_DOMAINS); | |
2217 | ||
9da3da66 CW |
2218 | st = kmalloc(sizeof(*st), GFP_KERNEL); |
2219 | if (st == NULL) | |
2220 | return -ENOMEM; | |
2221 | ||
05394f39 | 2222 | page_count = obj->base.size / PAGE_SIZE; |
9da3da66 | 2223 | if (sg_alloc_table(st, page_count, GFP_KERNEL)) { |
9da3da66 | 2224 | kfree(st); |
e5281ccd | 2225 | return -ENOMEM; |
9da3da66 | 2226 | } |
e5281ccd | 2227 | |
9da3da66 CW |
2228 | /* Get the list of pages out of our struct file. They'll be pinned |
2229 | * at this point until we release them. | |
2230 | * | |
2231 | * Fail silently without starting the shrinker | |
2232 | */ | |
496ad9aa | 2233 | mapping = file_inode(obj->base.filp)->i_mapping; |
6c085a72 | 2234 | gfp = mapping_gfp_mask(mapping); |
caf49191 | 2235 | gfp |= __GFP_NORETRY | __GFP_NOWARN | __GFP_NO_KSWAPD; |
6c085a72 | 2236 | gfp &= ~(__GFP_IO | __GFP_WAIT); |
90797e6d ID |
2237 | sg = st->sgl; |
2238 | st->nents = 0; | |
2239 | for (i = 0; i < page_count; i++) { | |
6c085a72 CW |
2240 | page = shmem_read_mapping_page_gfp(mapping, i, gfp); |
2241 | if (IS_ERR(page)) { | |
21ab4e74 CW |
2242 | i915_gem_shrink(dev_priv, |
2243 | page_count, | |
2244 | I915_SHRINK_BOUND | | |
2245 | I915_SHRINK_UNBOUND | | |
2246 | I915_SHRINK_PURGEABLE); | |
6c085a72 CW |
2247 | page = shmem_read_mapping_page_gfp(mapping, i, gfp); |
2248 | } | |
2249 | if (IS_ERR(page)) { | |
2250 | /* We've tried hard to allocate the memory by reaping | |
2251 | * our own buffer, now let the real VM do its job and | |
2252 | * go down in flames if truly OOM. | |
2253 | */ | |
6c085a72 | 2254 | i915_gem_shrink_all(dev_priv); |
f461d1be | 2255 | page = shmem_read_mapping_page(mapping, i); |
6c085a72 CW |
2256 | if (IS_ERR(page)) |
2257 | goto err_pages; | |
6c085a72 | 2258 | } |
426729dc KRW |
2259 | #ifdef CONFIG_SWIOTLB |
2260 | if (swiotlb_nr_tbl()) { | |
2261 | st->nents++; | |
2262 | sg_set_page(sg, page, PAGE_SIZE, 0); | |
2263 | sg = sg_next(sg); | |
2264 | continue; | |
2265 | } | |
2266 | #endif | |
90797e6d ID |
2267 | if (!i || page_to_pfn(page) != last_pfn + 1) { |
2268 | if (i) | |
2269 | sg = sg_next(sg); | |
2270 | st->nents++; | |
2271 | sg_set_page(sg, page, PAGE_SIZE, 0); | |
2272 | } else { | |
2273 | sg->length += PAGE_SIZE; | |
2274 | } | |
2275 | last_pfn = page_to_pfn(page); | |
3bbbe706 DV |
2276 | |
2277 | /* Check that the i965g/gm workaround works. */ | |
2278 | WARN_ON((gfp & __GFP_DMA32) && (last_pfn >= 0x00100000UL)); | |
e5281ccd | 2279 | } |
426729dc KRW |
2280 | #ifdef CONFIG_SWIOTLB |
2281 | if (!swiotlb_nr_tbl()) | |
2282 | #endif | |
2283 | sg_mark_end(sg); | |
74ce6b6c CW |
2284 | obj->pages = st; |
2285 | ||
6dacfd2f | 2286 | if (i915_gem_object_needs_bit17_swizzle(obj)) |
e5281ccd CW |
2287 | i915_gem_object_do_bit_17_swizzle(obj); |
2288 | ||
656bfa3a DV |
2289 | if (obj->tiling_mode != I915_TILING_NONE && |
2290 | dev_priv->quirks & QUIRK_PIN_SWIZZLED_PAGES) | |
2291 | i915_gem_object_pin_pages(obj); | |
2292 | ||
e5281ccd CW |
2293 | return 0; |
2294 | ||
2295 | err_pages: | |
90797e6d ID |
2296 | sg_mark_end(sg); |
2297 | for_each_sg_page(st->sgl, &sg_iter, st->nents, 0) | |
2db76d7c | 2298 | page_cache_release(sg_page_iter_page(&sg_iter)); |
9da3da66 CW |
2299 | sg_free_table(st); |
2300 | kfree(st); | |
0820baf3 CW |
2301 | |
2302 | /* shmemfs first checks if there is enough memory to allocate the page | |
2303 | * and reports ENOSPC should there be insufficient, along with the usual | |
2304 | * ENOMEM for a genuine allocation failure. | |
2305 | * | |
2306 | * We use ENOSPC in our driver to mean that we have run out of aperture | |
2307 | * space and so want to translate the error from shmemfs back to our | |
2308 | * usual understanding of ENOMEM. | |
2309 | */ | |
2310 | if (PTR_ERR(page) == -ENOSPC) | |
2311 | return -ENOMEM; | |
2312 | else | |
2313 | return PTR_ERR(page); | |
673a394b EA |
2314 | } |
2315 | ||
37e680a1 CW |
2316 | /* Ensure that the associated pages are gathered from the backing storage |
2317 | * and pinned into our object. i915_gem_object_get_pages() may be called | |
2318 | * multiple times before they are released by a single call to | |
2319 | * i915_gem_object_put_pages() - once the pages are no longer referenced | |
2320 | * either as a result of memory pressure (reaping pages under the shrinker) | |
2321 | * or as the object is itself released. | |
2322 | */ | |
2323 | int | |
2324 | i915_gem_object_get_pages(struct drm_i915_gem_object *obj) | |
2325 | { | |
2326 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; | |
2327 | const struct drm_i915_gem_object_ops *ops = obj->ops; | |
2328 | int ret; | |
2329 | ||
2f745ad3 | 2330 | if (obj->pages) |
37e680a1 CW |
2331 | return 0; |
2332 | ||
43e28f09 | 2333 | if (obj->madv != I915_MADV_WILLNEED) { |
bd9b6a4e | 2334 | DRM_DEBUG("Attempting to obtain a purgeable object\n"); |
8c99e57d | 2335 | return -EFAULT; |
43e28f09 CW |
2336 | } |
2337 | ||
a5570178 CW |
2338 | BUG_ON(obj->pages_pin_count); |
2339 | ||
37e680a1 CW |
2340 | ret = ops->get_pages(obj); |
2341 | if (ret) | |
2342 | return ret; | |
2343 | ||
35c20a60 | 2344 | list_add_tail(&obj->global_list, &dev_priv->mm.unbound_list); |
ee286370 CW |
2345 | |
2346 | obj->get_page.sg = obj->pages->sgl; | |
2347 | obj->get_page.last = 0; | |
2348 | ||
37e680a1 | 2349 | return 0; |
673a394b EA |
2350 | } |
2351 | ||
b4716185 | 2352 | void i915_vma_move_to_active(struct i915_vma *vma, |
b2af0376 | 2353 | struct drm_i915_gem_request *req) |
673a394b | 2354 | { |
b4716185 | 2355 | struct drm_i915_gem_object *obj = vma->obj; |
b2af0376 JH |
2356 | struct intel_engine_cs *ring; |
2357 | ||
2358 | ring = i915_gem_request_get_ring(req); | |
673a394b EA |
2359 | |
2360 | /* Add a reference if we're newly entering the active list. */ | |
b4716185 | 2361 | if (obj->active == 0) |
05394f39 | 2362 | drm_gem_object_reference(&obj->base); |
b4716185 | 2363 | obj->active |= intel_ring_flag(ring); |
e35a41de | 2364 | |
b4716185 | 2365 | list_move_tail(&obj->ring_list[ring->id], &ring->active_list); |
b2af0376 | 2366 | i915_gem_request_assign(&obj->last_read_req[ring->id], req); |
caea7476 | 2367 | |
b4716185 | 2368 | list_move_tail(&vma->mm_list, &vma->vm->active_list); |
caea7476 CW |
2369 | } |
2370 | ||
b4716185 CW |
2371 | static void |
2372 | i915_gem_object_retire__write(struct drm_i915_gem_object *obj) | |
e2d05a8b | 2373 | { |
b4716185 CW |
2374 | RQ_BUG_ON(obj->last_write_req == NULL); |
2375 | RQ_BUG_ON(!(obj->active & intel_ring_flag(obj->last_write_req->ring))); | |
2376 | ||
2377 | i915_gem_request_assign(&obj->last_write_req, NULL); | |
2378 | intel_fb_obj_flush(obj, true); | |
e2d05a8b BW |
2379 | } |
2380 | ||
caea7476 | 2381 | static void |
b4716185 | 2382 | i915_gem_object_retire__read(struct drm_i915_gem_object *obj, int ring) |
ce44b0ea | 2383 | { |
feb822cf | 2384 | struct i915_vma *vma; |
ce44b0ea | 2385 | |
b4716185 CW |
2386 | RQ_BUG_ON(obj->last_read_req[ring] == NULL); |
2387 | RQ_BUG_ON(!(obj->active & (1 << ring))); | |
2388 | ||
2389 | list_del_init(&obj->ring_list[ring]); | |
2390 | i915_gem_request_assign(&obj->last_read_req[ring], NULL); | |
2391 | ||
2392 | if (obj->last_write_req && obj->last_write_req->ring->id == ring) | |
2393 | i915_gem_object_retire__write(obj); | |
2394 | ||
2395 | obj->active &= ~(1 << ring); | |
2396 | if (obj->active) | |
2397 | return; | |
caea7476 | 2398 | |
fe14d5f4 TU |
2399 | list_for_each_entry(vma, &obj->vma_list, vma_link) { |
2400 | if (!list_empty(&vma->mm_list)) | |
2401 | list_move_tail(&vma->mm_list, &vma->vm->inactive_list); | |
feb822cf | 2402 | } |
caea7476 | 2403 | |
97b2a6a1 | 2404 | i915_gem_request_assign(&obj->last_fenced_req, NULL); |
caea7476 | 2405 | drm_gem_object_unreference(&obj->base); |
c8725f3d CW |
2406 | } |
2407 | ||
9d773091 | 2408 | static int |
fca26bb4 | 2409 | i915_gem_init_seqno(struct drm_device *dev, u32 seqno) |
53d227f2 | 2410 | { |
9d773091 | 2411 | struct drm_i915_private *dev_priv = dev->dev_private; |
a4872ba6 | 2412 | struct intel_engine_cs *ring; |
9d773091 | 2413 | int ret, i, j; |
53d227f2 | 2414 | |
107f27a5 | 2415 | /* Carefully retire all requests without writing to the rings */ |
9d773091 | 2416 | for_each_ring(ring, dev_priv, i) { |
107f27a5 CW |
2417 | ret = intel_ring_idle(ring); |
2418 | if (ret) | |
2419 | return ret; | |
9d773091 | 2420 | } |
9d773091 | 2421 | i915_gem_retire_requests(dev); |
107f27a5 CW |
2422 | |
2423 | /* Finally reset hw state */ | |
9d773091 | 2424 | for_each_ring(ring, dev_priv, i) { |
fca26bb4 | 2425 | intel_ring_init_seqno(ring, seqno); |
498d2ac1 | 2426 | |
ebc348b2 BW |
2427 | for (j = 0; j < ARRAY_SIZE(ring->semaphore.sync_seqno); j++) |
2428 | ring->semaphore.sync_seqno[j] = 0; | |
9d773091 | 2429 | } |
53d227f2 | 2430 | |
9d773091 | 2431 | return 0; |
53d227f2 DV |
2432 | } |
2433 | ||
fca26bb4 MK |
2434 | int i915_gem_set_seqno(struct drm_device *dev, u32 seqno) |
2435 | { | |
2436 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2437 | int ret; | |
2438 | ||
2439 | if (seqno == 0) | |
2440 | return -EINVAL; | |
2441 | ||
2442 | /* HWS page needs to be set less than what we | |
2443 | * will inject to ring | |
2444 | */ | |
2445 | ret = i915_gem_init_seqno(dev, seqno - 1); | |
2446 | if (ret) | |
2447 | return ret; | |
2448 | ||
2449 | /* Carefully set the last_seqno value so that wrap | |
2450 | * detection still works | |
2451 | */ | |
2452 | dev_priv->next_seqno = seqno; | |
2453 | dev_priv->last_seqno = seqno - 1; | |
2454 | if (dev_priv->last_seqno == 0) | |
2455 | dev_priv->last_seqno--; | |
2456 | ||
2457 | return 0; | |
2458 | } | |
2459 | ||
9d773091 CW |
2460 | int |
2461 | i915_gem_get_seqno(struct drm_device *dev, u32 *seqno) | |
53d227f2 | 2462 | { |
9d773091 CW |
2463 | struct drm_i915_private *dev_priv = dev->dev_private; |
2464 | ||
2465 | /* reserve 0 for non-seqno */ | |
2466 | if (dev_priv->next_seqno == 0) { | |
fca26bb4 | 2467 | int ret = i915_gem_init_seqno(dev, 0); |
9d773091 CW |
2468 | if (ret) |
2469 | return ret; | |
53d227f2 | 2470 | |
9d773091 CW |
2471 | dev_priv->next_seqno = 1; |
2472 | } | |
53d227f2 | 2473 | |
f72b3435 | 2474 | *seqno = dev_priv->last_seqno = dev_priv->next_seqno++; |
9d773091 | 2475 | return 0; |
53d227f2 DV |
2476 | } |
2477 | ||
bf7dc5b7 JH |
2478 | /* |
2479 | * NB: This function is not allowed to fail. Doing so would mean the the | |
2480 | * request is not being tracked for completion but the work itself is | |
2481 | * going to happen on the hardware. This would be a Bad Thing(tm). | |
2482 | */ | |
75289874 | 2483 | void __i915_add_request(struct drm_i915_gem_request *request, |
5b4a60c2 JH |
2484 | struct drm_i915_gem_object *obj, |
2485 | bool flush_caches) | |
673a394b | 2486 | { |
75289874 JH |
2487 | struct intel_engine_cs *ring; |
2488 | struct drm_i915_private *dev_priv; | |
48e29f55 | 2489 | struct intel_ringbuffer *ringbuf; |
6d3d8274 | 2490 | u32 request_start; |
3cce469c CW |
2491 | int ret; |
2492 | ||
48e29f55 | 2493 | if (WARN_ON(request == NULL)) |
bf7dc5b7 | 2494 | return; |
48e29f55 | 2495 | |
75289874 JH |
2496 | ring = request->ring; |
2497 | dev_priv = ring->dev->dev_private; | |
2498 | ringbuf = request->ringbuf; | |
2499 | ||
29b1b415 JH |
2500 | /* |
2501 | * To ensure that this call will not fail, space for its emissions | |
2502 | * should already have been reserved in the ring buffer. Let the ring | |
2503 | * know that it is time to use that space up. | |
2504 | */ | |
2505 | intel_ring_reserved_space_use(ringbuf); | |
2506 | ||
48e29f55 | 2507 | request_start = intel_ring_get_tail(ringbuf); |
cc889e0f DV |
2508 | /* |
2509 | * Emit any outstanding flushes - execbuf can fail to emit the flush | |
2510 | * after having emitted the batchbuffer command. Hence we need to fix | |
2511 | * things up similar to emitting the lazy request. The difference here | |
2512 | * is that the flush _must_ happen before the next request, no matter | |
2513 | * what. | |
2514 | */ | |
5b4a60c2 JH |
2515 | if (flush_caches) { |
2516 | if (i915.enable_execlists) | |
4866d729 | 2517 | ret = logical_ring_flush_all_caches(request); |
5b4a60c2 | 2518 | else |
4866d729 | 2519 | ret = intel_ring_flush_all_caches(request); |
5b4a60c2 JH |
2520 | /* Not allowed to fail! */ |
2521 | WARN(ret, "*_ring_flush_all_caches failed: %d!\n", ret); | |
2522 | } | |
cc889e0f | 2523 | |
a71d8d94 CW |
2524 | /* Record the position of the start of the request so that |
2525 | * should we detect the updated seqno part-way through the | |
2526 | * GPU processing the request, we never over-estimate the | |
2527 | * position of the head. | |
2528 | */ | |
6d3d8274 | 2529 | request->postfix = intel_ring_get_tail(ringbuf); |
a71d8d94 | 2530 | |
bf7dc5b7 | 2531 | if (i915.enable_execlists) |
c4e76638 | 2532 | ret = ring->emit_request(request); |
bf7dc5b7 | 2533 | else { |
ee044a88 | 2534 | ret = ring->add_request(request); |
53292cdb MT |
2535 | |
2536 | request->tail = intel_ring_get_tail(ringbuf); | |
48e29f55 | 2537 | } |
bf7dc5b7 JH |
2538 | /* Not allowed to fail! */ |
2539 | WARN(ret, "emit|add_request failed: %d!\n", ret); | |
673a394b | 2540 | |
7d736f4f | 2541 | request->head = request_start; |
7d736f4f MK |
2542 | |
2543 | /* Whilst this request exists, batch_obj will be on the | |
2544 | * active_list, and so will hold the active reference. Only when this | |
2545 | * request is retired will the the batch_obj be moved onto the | |
2546 | * inactive_list and lose its active reference. Hence we do not need | |
2547 | * to explicitly hold another reference here. | |
2548 | */ | |
9a7e0c2a | 2549 | request->batch_obj = obj; |
0e50e96b | 2550 | |
673a394b | 2551 | request->emitted_jiffies = jiffies; |
852835f3 | 2552 | list_add_tail(&request->list, &ring->request_list); |
673a394b | 2553 | |
74328ee5 | 2554 | trace_i915_gem_request_add(request); |
db53a302 | 2555 | |
87255483 | 2556 | i915_queue_hangcheck(ring->dev); |
10cd45b6 | 2557 | |
87255483 DV |
2558 | queue_delayed_work(dev_priv->wq, |
2559 | &dev_priv->mm.retire_work, | |
2560 | round_jiffies_up_relative(HZ)); | |
2561 | intel_mark_busy(dev_priv->dev); | |
cc889e0f | 2562 | |
29b1b415 JH |
2563 | /* Sanity check that the reserved size was large enough. */ |
2564 | intel_ring_reserved_space_end(ringbuf); | |
673a394b EA |
2565 | } |
2566 | ||
939fd762 | 2567 | static bool i915_context_is_banned(struct drm_i915_private *dev_priv, |
273497e5 | 2568 | const struct intel_context *ctx) |
be62acb4 | 2569 | { |
44e2c070 | 2570 | unsigned long elapsed; |
be62acb4 | 2571 | |
44e2c070 MK |
2572 | elapsed = get_seconds() - ctx->hang_stats.guilty_ts; |
2573 | ||
2574 | if (ctx->hang_stats.banned) | |
be62acb4 MK |
2575 | return true; |
2576 | ||
676fa572 CW |
2577 | if (ctx->hang_stats.ban_period_seconds && |
2578 | elapsed <= ctx->hang_stats.ban_period_seconds) { | |
ccc7bed0 | 2579 | if (!i915_gem_context_is_default(ctx)) { |
3fac8978 | 2580 | DRM_DEBUG("context hanging too fast, banning!\n"); |
ccc7bed0 | 2581 | return true; |
88b4aa87 MK |
2582 | } else if (i915_stop_ring_allow_ban(dev_priv)) { |
2583 | if (i915_stop_ring_allow_warn(dev_priv)) | |
2584 | DRM_ERROR("gpu hanging too fast, banning!\n"); | |
ccc7bed0 | 2585 | return true; |
3fac8978 | 2586 | } |
be62acb4 MK |
2587 | } |
2588 | ||
2589 | return false; | |
2590 | } | |
2591 | ||
939fd762 | 2592 | static void i915_set_reset_status(struct drm_i915_private *dev_priv, |
273497e5 | 2593 | struct intel_context *ctx, |
b6b0fac0 | 2594 | const bool guilty) |
aa60c664 | 2595 | { |
44e2c070 MK |
2596 | struct i915_ctx_hang_stats *hs; |
2597 | ||
2598 | if (WARN_ON(!ctx)) | |
2599 | return; | |
aa60c664 | 2600 | |
44e2c070 MK |
2601 | hs = &ctx->hang_stats; |
2602 | ||
2603 | if (guilty) { | |
939fd762 | 2604 | hs->banned = i915_context_is_banned(dev_priv, ctx); |
44e2c070 MK |
2605 | hs->batch_active++; |
2606 | hs->guilty_ts = get_seconds(); | |
2607 | } else { | |
2608 | hs->batch_pending++; | |
aa60c664 MK |
2609 | } |
2610 | } | |
2611 | ||
abfe262a JH |
2612 | void i915_gem_request_free(struct kref *req_ref) |
2613 | { | |
2614 | struct drm_i915_gem_request *req = container_of(req_ref, | |
2615 | typeof(*req), ref); | |
2616 | struct intel_context *ctx = req->ctx; | |
2617 | ||
fcfa423c JH |
2618 | if (req->file_priv) |
2619 | i915_gem_request_remove_from_client(req); | |
2620 | ||
0794aed3 TD |
2621 | if (ctx) { |
2622 | if (i915.enable_execlists) { | |
abfe262a | 2623 | struct intel_engine_cs *ring = req->ring; |
0e50e96b | 2624 | |
0794aed3 TD |
2625 | if (ctx != ring->default_context) |
2626 | intel_lr_context_unpin(ring, ctx); | |
2627 | } | |
abfe262a | 2628 | |
dcb4c12a OM |
2629 | i915_gem_context_unreference(ctx); |
2630 | } | |
abfe262a | 2631 | |
efab6d8d | 2632 | kmem_cache_free(req->i915->requests, req); |
0e50e96b MK |
2633 | } |
2634 | ||
6689cb2b | 2635 | int i915_gem_request_alloc(struct intel_engine_cs *ring, |
217e46b5 JH |
2636 | struct intel_context *ctx, |
2637 | struct drm_i915_gem_request **req_out) | |
6689cb2b | 2638 | { |
efab6d8d | 2639 | struct drm_i915_private *dev_priv = to_i915(ring->dev); |
eed29a5b | 2640 | struct drm_i915_gem_request *req; |
6689cb2b | 2641 | int ret; |
6689cb2b | 2642 | |
217e46b5 JH |
2643 | if (!req_out) |
2644 | return -EINVAL; | |
2645 | ||
bccca494 | 2646 | *req_out = NULL; |
6689cb2b | 2647 | |
eed29a5b DV |
2648 | req = kmem_cache_zalloc(dev_priv->requests, GFP_KERNEL); |
2649 | if (req == NULL) | |
6689cb2b JH |
2650 | return -ENOMEM; |
2651 | ||
eed29a5b | 2652 | ret = i915_gem_get_seqno(ring->dev, &req->seqno); |
9a0c1e27 CW |
2653 | if (ret) |
2654 | goto err; | |
6689cb2b | 2655 | |
40e895ce JH |
2656 | kref_init(&req->ref); |
2657 | req->i915 = dev_priv; | |
eed29a5b | 2658 | req->ring = ring; |
40e895ce JH |
2659 | req->ctx = ctx; |
2660 | i915_gem_context_reference(req->ctx); | |
6689cb2b JH |
2661 | |
2662 | if (i915.enable_execlists) | |
40e895ce | 2663 | ret = intel_logical_ring_alloc_request_extras(req); |
6689cb2b | 2664 | else |
eed29a5b | 2665 | ret = intel_ring_alloc_request_extras(req); |
40e895ce JH |
2666 | if (ret) { |
2667 | i915_gem_context_unreference(req->ctx); | |
9a0c1e27 | 2668 | goto err; |
40e895ce | 2669 | } |
6689cb2b | 2670 | |
29b1b415 JH |
2671 | /* |
2672 | * Reserve space in the ring buffer for all the commands required to | |
2673 | * eventually emit this request. This is to guarantee that the | |
2674 | * i915_add_request() call can't fail. Note that the reserve may need | |
2675 | * to be redone if the request is not actually submitted straight | |
2676 | * away, e.g. because a GPU scheduler has deferred it. | |
29b1b415 | 2677 | */ |
ccd98fe4 JH |
2678 | if (i915.enable_execlists) |
2679 | ret = intel_logical_ring_reserve_space(req); | |
2680 | else | |
2681 | ret = intel_ring_reserve_space(req); | |
2682 | if (ret) { | |
2683 | /* | |
2684 | * At this point, the request is fully allocated even if not | |
2685 | * fully prepared. Thus it can be cleaned up using the proper | |
2686 | * free code. | |
2687 | */ | |
2688 | i915_gem_request_cancel(req); | |
2689 | return ret; | |
2690 | } | |
29b1b415 | 2691 | |
bccca494 | 2692 | *req_out = req; |
6689cb2b | 2693 | return 0; |
9a0c1e27 CW |
2694 | |
2695 | err: | |
2696 | kmem_cache_free(dev_priv->requests, req); | |
2697 | return ret; | |
0e50e96b MK |
2698 | } |
2699 | ||
29b1b415 JH |
2700 | void i915_gem_request_cancel(struct drm_i915_gem_request *req) |
2701 | { | |
2702 | intel_ring_reserved_space_cancel(req->ringbuf); | |
2703 | ||
2704 | i915_gem_request_unreference(req); | |
2705 | } | |
2706 | ||
8d9fc7fd | 2707 | struct drm_i915_gem_request * |
a4872ba6 | 2708 | i915_gem_find_active_request(struct intel_engine_cs *ring) |
9375e446 | 2709 | { |
4db080f9 CW |
2710 | struct drm_i915_gem_request *request; |
2711 | ||
2712 | list_for_each_entry(request, &ring->request_list, list) { | |
1b5a433a | 2713 | if (i915_gem_request_completed(request, false)) |
4db080f9 | 2714 | continue; |
aa60c664 | 2715 | |
b6b0fac0 | 2716 | return request; |
4db080f9 | 2717 | } |
b6b0fac0 MK |
2718 | |
2719 | return NULL; | |
2720 | } | |
2721 | ||
2722 | static void i915_gem_reset_ring_status(struct drm_i915_private *dev_priv, | |
a4872ba6 | 2723 | struct intel_engine_cs *ring) |
b6b0fac0 MK |
2724 | { |
2725 | struct drm_i915_gem_request *request; | |
2726 | bool ring_hung; | |
2727 | ||
8d9fc7fd | 2728 | request = i915_gem_find_active_request(ring); |
b6b0fac0 MK |
2729 | |
2730 | if (request == NULL) | |
2731 | return; | |
2732 | ||
2733 | ring_hung = ring->hangcheck.score >= HANGCHECK_SCORE_RING_HUNG; | |
2734 | ||
939fd762 | 2735 | i915_set_reset_status(dev_priv, request->ctx, ring_hung); |
b6b0fac0 MK |
2736 | |
2737 | list_for_each_entry_continue(request, &ring->request_list, list) | |
939fd762 | 2738 | i915_set_reset_status(dev_priv, request->ctx, false); |
4db080f9 | 2739 | } |
aa60c664 | 2740 | |
4db080f9 | 2741 | static void i915_gem_reset_ring_cleanup(struct drm_i915_private *dev_priv, |
a4872ba6 | 2742 | struct intel_engine_cs *ring) |
4db080f9 | 2743 | { |
dfaae392 | 2744 | while (!list_empty(&ring->active_list)) { |
05394f39 | 2745 | struct drm_i915_gem_object *obj; |
9375e446 | 2746 | |
05394f39 CW |
2747 | obj = list_first_entry(&ring->active_list, |
2748 | struct drm_i915_gem_object, | |
b4716185 | 2749 | ring_list[ring->id]); |
9375e446 | 2750 | |
b4716185 | 2751 | i915_gem_object_retire__read(obj, ring->id); |
673a394b | 2752 | } |
1d62beea | 2753 | |
dcb4c12a OM |
2754 | /* |
2755 | * Clear the execlists queue up before freeing the requests, as those | |
2756 | * are the ones that keep the context and ringbuffer backing objects | |
2757 | * pinned in place. | |
2758 | */ | |
2759 | while (!list_empty(&ring->execlist_queue)) { | |
6d3d8274 | 2760 | struct drm_i915_gem_request *submit_req; |
dcb4c12a OM |
2761 | |
2762 | submit_req = list_first_entry(&ring->execlist_queue, | |
6d3d8274 | 2763 | struct drm_i915_gem_request, |
dcb4c12a OM |
2764 | execlist_link); |
2765 | list_del(&submit_req->execlist_link); | |
1197b4f2 MK |
2766 | |
2767 | if (submit_req->ctx != ring->default_context) | |
2768 | intel_lr_context_unpin(ring, submit_req->ctx); | |
2769 | ||
b3a38998 | 2770 | i915_gem_request_unreference(submit_req); |
dcb4c12a OM |
2771 | } |
2772 | ||
1d62beea BW |
2773 | /* |
2774 | * We must free the requests after all the corresponding objects have | |
2775 | * been moved off active lists. Which is the same order as the normal | |
2776 | * retire_requests function does. This is important if object hold | |
2777 | * implicit references on things like e.g. ppgtt address spaces through | |
2778 | * the request. | |
2779 | */ | |
2780 | while (!list_empty(&ring->request_list)) { | |
2781 | struct drm_i915_gem_request *request; | |
2782 | ||
2783 | request = list_first_entry(&ring->request_list, | |
2784 | struct drm_i915_gem_request, | |
2785 | list); | |
2786 | ||
b4716185 | 2787 | i915_gem_request_retire(request); |
1d62beea | 2788 | } |
673a394b EA |
2789 | } |
2790 | ||
19b2dbde | 2791 | void i915_gem_restore_fences(struct drm_device *dev) |
312817a3 CW |
2792 | { |
2793 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2794 | int i; | |
2795 | ||
4b9de737 | 2796 | for (i = 0; i < dev_priv->num_fence_regs; i++) { |
312817a3 | 2797 | struct drm_i915_fence_reg *reg = &dev_priv->fence_regs[i]; |
7d2cb39c | 2798 | |
94a335db DV |
2799 | /* |
2800 | * Commit delayed tiling changes if we have an object still | |
2801 | * attached to the fence, otherwise just clear the fence. | |
2802 | */ | |
2803 | if (reg->obj) { | |
2804 | i915_gem_object_update_fence(reg->obj, reg, | |
2805 | reg->obj->tiling_mode); | |
2806 | } else { | |
2807 | i915_gem_write_fence(dev, i, NULL); | |
2808 | } | |
312817a3 CW |
2809 | } |
2810 | } | |
2811 | ||
069efc1d | 2812 | void i915_gem_reset(struct drm_device *dev) |
673a394b | 2813 | { |
77f01230 | 2814 | struct drm_i915_private *dev_priv = dev->dev_private; |
a4872ba6 | 2815 | struct intel_engine_cs *ring; |
1ec14ad3 | 2816 | int i; |
673a394b | 2817 | |
4db080f9 CW |
2818 | /* |
2819 | * Before we free the objects from the requests, we need to inspect | |
2820 | * them for finding the guilty party. As the requests only borrow | |
2821 | * their reference to the objects, the inspection must be done first. | |
2822 | */ | |
2823 | for_each_ring(ring, dev_priv, i) | |
2824 | i915_gem_reset_ring_status(dev_priv, ring); | |
2825 | ||
b4519513 | 2826 | for_each_ring(ring, dev_priv, i) |
4db080f9 | 2827 | i915_gem_reset_ring_cleanup(dev_priv, ring); |
dfaae392 | 2828 | |
acce9ffa BW |
2829 | i915_gem_context_reset(dev); |
2830 | ||
19b2dbde | 2831 | i915_gem_restore_fences(dev); |
b4716185 CW |
2832 | |
2833 | WARN_ON(i915_verify_lists(dev)); | |
673a394b EA |
2834 | } |
2835 | ||
2836 | /** | |
2837 | * This function clears the request list as sequence numbers are passed. | |
2838 | */ | |
1cf0ba14 | 2839 | void |
a4872ba6 | 2840 | i915_gem_retire_requests_ring(struct intel_engine_cs *ring) |
673a394b | 2841 | { |
db53a302 | 2842 | WARN_ON(i915_verify_lists(ring->dev)); |
673a394b | 2843 | |
832a3aad CW |
2844 | /* Retire requests first as we use it above for the early return. |
2845 | * If we retire requests last, we may use a later seqno and so clear | |
2846 | * the requests lists without clearing the active list, leading to | |
2847 | * confusion. | |
e9103038 | 2848 | */ |
852835f3 | 2849 | while (!list_empty(&ring->request_list)) { |
673a394b | 2850 | struct drm_i915_gem_request *request; |
673a394b | 2851 | |
852835f3 | 2852 | request = list_first_entry(&ring->request_list, |
673a394b EA |
2853 | struct drm_i915_gem_request, |
2854 | list); | |
673a394b | 2855 | |
1b5a433a | 2856 | if (!i915_gem_request_completed(request, true)) |
b84d5f0c CW |
2857 | break; |
2858 | ||
b4716185 | 2859 | i915_gem_request_retire(request); |
b84d5f0c | 2860 | } |
673a394b | 2861 | |
832a3aad CW |
2862 | /* Move any buffers on the active list that are no longer referenced |
2863 | * by the ringbuffer to the flushing/inactive lists as appropriate, | |
2864 | * before we free the context associated with the requests. | |
2865 | */ | |
2866 | while (!list_empty(&ring->active_list)) { | |
2867 | struct drm_i915_gem_object *obj; | |
2868 | ||
2869 | obj = list_first_entry(&ring->active_list, | |
2870 | struct drm_i915_gem_object, | |
b4716185 | 2871 | ring_list[ring->id]); |
832a3aad | 2872 | |
b4716185 | 2873 | if (!list_empty(&obj->last_read_req[ring->id]->list)) |
832a3aad CW |
2874 | break; |
2875 | ||
b4716185 | 2876 | i915_gem_object_retire__read(obj, ring->id); |
832a3aad CW |
2877 | } |
2878 | ||
581c26e8 JH |
2879 | if (unlikely(ring->trace_irq_req && |
2880 | i915_gem_request_completed(ring->trace_irq_req, true))) { | |
1ec14ad3 | 2881 | ring->irq_put(ring); |
581c26e8 | 2882 | i915_gem_request_assign(&ring->trace_irq_req, NULL); |
9d34e5db | 2883 | } |
23bc5982 | 2884 | |
db53a302 | 2885 | WARN_ON(i915_verify_lists(ring->dev)); |
673a394b EA |
2886 | } |
2887 | ||
b29c19b6 | 2888 | bool |
b09a1fec CW |
2889 | i915_gem_retire_requests(struct drm_device *dev) |
2890 | { | |
3e31c6c0 | 2891 | struct drm_i915_private *dev_priv = dev->dev_private; |
a4872ba6 | 2892 | struct intel_engine_cs *ring; |
b29c19b6 | 2893 | bool idle = true; |
1ec14ad3 | 2894 | int i; |
b09a1fec | 2895 | |
b29c19b6 | 2896 | for_each_ring(ring, dev_priv, i) { |
b4519513 | 2897 | i915_gem_retire_requests_ring(ring); |
b29c19b6 | 2898 | idle &= list_empty(&ring->request_list); |
c86ee3a9 TD |
2899 | if (i915.enable_execlists) { |
2900 | unsigned long flags; | |
2901 | ||
2902 | spin_lock_irqsave(&ring->execlist_lock, flags); | |
2903 | idle &= list_empty(&ring->execlist_queue); | |
2904 | spin_unlock_irqrestore(&ring->execlist_lock, flags); | |
2905 | ||
2906 | intel_execlists_retire_requests(ring); | |
2907 | } | |
b29c19b6 CW |
2908 | } |
2909 | ||
2910 | if (idle) | |
2911 | mod_delayed_work(dev_priv->wq, | |
2912 | &dev_priv->mm.idle_work, | |
2913 | msecs_to_jiffies(100)); | |
2914 | ||
2915 | return idle; | |
b09a1fec CW |
2916 | } |
2917 | ||
75ef9da2 | 2918 | static void |
673a394b EA |
2919 | i915_gem_retire_work_handler(struct work_struct *work) |
2920 | { | |
b29c19b6 CW |
2921 | struct drm_i915_private *dev_priv = |
2922 | container_of(work, typeof(*dev_priv), mm.retire_work.work); | |
2923 | struct drm_device *dev = dev_priv->dev; | |
0a58705b | 2924 | bool idle; |
673a394b | 2925 | |
891b48cf | 2926 | /* Come back later if the device is busy... */ |
b29c19b6 CW |
2927 | idle = false; |
2928 | if (mutex_trylock(&dev->struct_mutex)) { | |
2929 | idle = i915_gem_retire_requests(dev); | |
2930 | mutex_unlock(&dev->struct_mutex); | |
673a394b | 2931 | } |
b29c19b6 | 2932 | if (!idle) |
bcb45086 CW |
2933 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, |
2934 | round_jiffies_up_relative(HZ)); | |
b29c19b6 | 2935 | } |
0a58705b | 2936 | |
b29c19b6 CW |
2937 | static void |
2938 | i915_gem_idle_work_handler(struct work_struct *work) | |
2939 | { | |
2940 | struct drm_i915_private *dev_priv = | |
2941 | container_of(work, typeof(*dev_priv), mm.idle_work.work); | |
35c94185 | 2942 | struct drm_device *dev = dev_priv->dev; |
423795cb CW |
2943 | struct intel_engine_cs *ring; |
2944 | int i; | |
b29c19b6 | 2945 | |
423795cb CW |
2946 | for_each_ring(ring, dev_priv, i) |
2947 | if (!list_empty(&ring->request_list)) | |
2948 | return; | |
35c94185 CW |
2949 | |
2950 | intel_mark_idle(dev); | |
2951 | ||
2952 | if (mutex_trylock(&dev->struct_mutex)) { | |
2953 | struct intel_engine_cs *ring; | |
2954 | int i; | |
2955 | ||
2956 | for_each_ring(ring, dev_priv, i) | |
2957 | i915_gem_batch_pool_fini(&ring->batch_pool); | |
b29c19b6 | 2958 | |
35c94185 CW |
2959 | mutex_unlock(&dev->struct_mutex); |
2960 | } | |
673a394b EA |
2961 | } |
2962 | ||
30dfebf3 DV |
2963 | /** |
2964 | * Ensures that an object will eventually get non-busy by flushing any required | |
2965 | * write domains, emitting any outstanding lazy request and retiring and | |
2966 | * completed requests. | |
2967 | */ | |
2968 | static int | |
2969 | i915_gem_object_flush_active(struct drm_i915_gem_object *obj) | |
2970 | { | |
a5ac0f90 | 2971 | int i; |
b4716185 CW |
2972 | |
2973 | if (!obj->active) | |
2974 | return 0; | |
30dfebf3 | 2975 | |
b4716185 CW |
2976 | for (i = 0; i < I915_NUM_RINGS; i++) { |
2977 | struct drm_i915_gem_request *req; | |
41c52415 | 2978 | |
b4716185 CW |
2979 | req = obj->last_read_req[i]; |
2980 | if (req == NULL) | |
2981 | continue; | |
2982 | ||
2983 | if (list_empty(&req->list)) | |
2984 | goto retire; | |
2985 | ||
b4716185 CW |
2986 | if (i915_gem_request_completed(req, true)) { |
2987 | __i915_gem_request_retire__upto(req); | |
2988 | retire: | |
2989 | i915_gem_object_retire__read(obj, i); | |
2990 | } | |
30dfebf3 DV |
2991 | } |
2992 | ||
2993 | return 0; | |
2994 | } | |
2995 | ||
23ba4fd0 BW |
2996 | /** |
2997 | * i915_gem_wait_ioctl - implements DRM_IOCTL_I915_GEM_WAIT | |
2998 | * @DRM_IOCTL_ARGS: standard ioctl arguments | |
2999 | * | |
3000 | * Returns 0 if successful, else an error is returned with the remaining time in | |
3001 | * the timeout parameter. | |
3002 | * -ETIME: object is still busy after timeout | |
3003 | * -ERESTARTSYS: signal interrupted the wait | |
3004 | * -ENONENT: object doesn't exist | |
3005 | * Also possible, but rare: | |
3006 | * -EAGAIN: GPU wedged | |
3007 | * -ENOMEM: damn | |
3008 | * -ENODEV: Internal IRQ fail | |
3009 | * -E?: The add request failed | |
3010 | * | |
3011 | * The wait ioctl with a timeout of 0 reimplements the busy ioctl. With any | |
3012 | * non-zero timeout parameter the wait ioctl will wait for the given number of | |
3013 | * nanoseconds on an object becoming unbusy. Since the wait itself does so | |
3014 | * without holding struct_mutex the object may become re-busied before this | |
3015 | * function completes. A similar but shorter * race condition exists in the busy | |
3016 | * ioctl | |
3017 | */ | |
3018 | int | |
3019 | i915_gem_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file) | |
3020 | { | |
3e31c6c0 | 3021 | struct drm_i915_private *dev_priv = dev->dev_private; |
23ba4fd0 BW |
3022 | struct drm_i915_gem_wait *args = data; |
3023 | struct drm_i915_gem_object *obj; | |
b4716185 | 3024 | struct drm_i915_gem_request *req[I915_NUM_RINGS]; |
f69061be | 3025 | unsigned reset_counter; |
b4716185 CW |
3026 | int i, n = 0; |
3027 | int ret; | |
23ba4fd0 | 3028 | |
11b5d511 DV |
3029 | if (args->flags != 0) |
3030 | return -EINVAL; | |
3031 | ||
23ba4fd0 BW |
3032 | ret = i915_mutex_lock_interruptible(dev); |
3033 | if (ret) | |
3034 | return ret; | |
3035 | ||
3036 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->bo_handle)); | |
3037 | if (&obj->base == NULL) { | |
3038 | mutex_unlock(&dev->struct_mutex); | |
3039 | return -ENOENT; | |
3040 | } | |
3041 | ||
30dfebf3 DV |
3042 | /* Need to make sure the object gets inactive eventually. */ |
3043 | ret = i915_gem_object_flush_active(obj); | |
23ba4fd0 BW |
3044 | if (ret) |
3045 | goto out; | |
3046 | ||
b4716185 | 3047 | if (!obj->active) |
97b2a6a1 | 3048 | goto out; |
23ba4fd0 | 3049 | |
23ba4fd0 | 3050 | /* Do this after OLR check to make sure we make forward progress polling |
762e4583 | 3051 | * on this IOCTL with a timeout == 0 (like busy ioctl) |
23ba4fd0 | 3052 | */ |
762e4583 | 3053 | if (args->timeout_ns == 0) { |
23ba4fd0 BW |
3054 | ret = -ETIME; |
3055 | goto out; | |
3056 | } | |
3057 | ||
3058 | drm_gem_object_unreference(&obj->base); | |
f69061be | 3059 | reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter); |
b4716185 CW |
3060 | |
3061 | for (i = 0; i < I915_NUM_RINGS; i++) { | |
3062 | if (obj->last_read_req[i] == NULL) | |
3063 | continue; | |
3064 | ||
3065 | req[n++] = i915_gem_request_reference(obj->last_read_req[i]); | |
3066 | } | |
3067 | ||
23ba4fd0 BW |
3068 | mutex_unlock(&dev->struct_mutex); |
3069 | ||
b4716185 CW |
3070 | for (i = 0; i < n; i++) { |
3071 | if (ret == 0) | |
3072 | ret = __i915_wait_request(req[i], reset_counter, true, | |
3073 | args->timeout_ns > 0 ? &args->timeout_ns : NULL, | |
3074 | file->driver_priv); | |
3075 | i915_gem_request_unreference__unlocked(req[i]); | |
3076 | } | |
ff865885 | 3077 | return ret; |
23ba4fd0 BW |
3078 | |
3079 | out: | |
3080 | drm_gem_object_unreference(&obj->base); | |
3081 | mutex_unlock(&dev->struct_mutex); | |
3082 | return ret; | |
3083 | } | |
3084 | ||
b4716185 CW |
3085 | static int |
3086 | __i915_gem_object_sync(struct drm_i915_gem_object *obj, | |
3087 | struct intel_engine_cs *to, | |
91af127f JH |
3088 | struct drm_i915_gem_request *from_req, |
3089 | struct drm_i915_gem_request **to_req) | |
b4716185 CW |
3090 | { |
3091 | struct intel_engine_cs *from; | |
3092 | int ret; | |
3093 | ||
91af127f | 3094 | from = i915_gem_request_get_ring(from_req); |
b4716185 CW |
3095 | if (to == from) |
3096 | return 0; | |
3097 | ||
91af127f | 3098 | if (i915_gem_request_completed(from_req, true)) |
b4716185 CW |
3099 | return 0; |
3100 | ||
b4716185 | 3101 | if (!i915_semaphore_is_enabled(obj->base.dev)) { |
a6f766f3 | 3102 | struct drm_i915_private *i915 = to_i915(obj->base.dev); |
91af127f | 3103 | ret = __i915_wait_request(from_req, |
a6f766f3 CW |
3104 | atomic_read(&i915->gpu_error.reset_counter), |
3105 | i915->mm.interruptible, | |
3106 | NULL, | |
3107 | &i915->rps.semaphores); | |
b4716185 CW |
3108 | if (ret) |
3109 | return ret; | |
3110 | ||
91af127f | 3111 | i915_gem_object_retire_request(obj, from_req); |
b4716185 CW |
3112 | } else { |
3113 | int idx = intel_ring_sync_index(from, to); | |
91af127f JH |
3114 | u32 seqno = i915_gem_request_get_seqno(from_req); |
3115 | ||
3116 | WARN_ON(!to_req); | |
b4716185 CW |
3117 | |
3118 | if (seqno <= from->semaphore.sync_seqno[idx]) | |
3119 | return 0; | |
3120 | ||
91af127f JH |
3121 | if (*to_req == NULL) { |
3122 | ret = i915_gem_request_alloc(to, to->default_context, to_req); | |
3123 | if (ret) | |
3124 | return ret; | |
3125 | } | |
3126 | ||
599d924c JH |
3127 | trace_i915_gem_ring_sync_to(*to_req, from, from_req); |
3128 | ret = to->semaphore.sync_to(*to_req, from, seqno); | |
b4716185 CW |
3129 | if (ret) |
3130 | return ret; | |
3131 | ||
3132 | /* We use last_read_req because sync_to() | |
3133 | * might have just caused seqno wrap under | |
3134 | * the radar. | |
3135 | */ | |
3136 | from->semaphore.sync_seqno[idx] = | |
3137 | i915_gem_request_get_seqno(obj->last_read_req[from->id]); | |
3138 | } | |
3139 | ||
3140 | return 0; | |
3141 | } | |
3142 | ||
5816d648 BW |
3143 | /** |
3144 | * i915_gem_object_sync - sync an object to a ring. | |
3145 | * | |
3146 | * @obj: object which may be in use on another ring. | |
3147 | * @to: ring we wish to use the object on. May be NULL. | |
91af127f JH |
3148 | * @to_req: request we wish to use the object for. See below. |
3149 | * This will be allocated and returned if a request is | |
3150 | * required but not passed in. | |
5816d648 BW |
3151 | * |
3152 | * This code is meant to abstract object synchronization with the GPU. | |
3153 | * Calling with NULL implies synchronizing the object with the CPU | |
b4716185 | 3154 | * rather than a particular GPU ring. Conceptually we serialise writes |
91af127f | 3155 | * between engines inside the GPU. We only allow one engine to write |
b4716185 CW |
3156 | * into a buffer at any time, but multiple readers. To ensure each has |
3157 | * a coherent view of memory, we must: | |
3158 | * | |
3159 | * - If there is an outstanding write request to the object, the new | |
3160 | * request must wait for it to complete (either CPU or in hw, requests | |
3161 | * on the same ring will be naturally ordered). | |
3162 | * | |
3163 | * - If we are a write request (pending_write_domain is set), the new | |
3164 | * request must wait for outstanding read requests to complete. | |
5816d648 | 3165 | * |
91af127f JH |
3166 | * For CPU synchronisation (NULL to) no request is required. For syncing with |
3167 | * rings to_req must be non-NULL. However, a request does not have to be | |
3168 | * pre-allocated. If *to_req is NULL and sync commands will be emitted then a | |
3169 | * request will be allocated automatically and returned through *to_req. Note | |
3170 | * that it is not guaranteed that commands will be emitted (because the system | |
3171 | * might already be idle). Hence there is no need to create a request that | |
3172 | * might never have any work submitted. Note further that if a request is | |
3173 | * returned in *to_req, it is the responsibility of the caller to submit | |
3174 | * that request (after potentially adding more work to it). | |
3175 | * | |
5816d648 BW |
3176 | * Returns 0 if successful, else propagates up the lower layer error. |
3177 | */ | |
2911a35b BW |
3178 | int |
3179 | i915_gem_object_sync(struct drm_i915_gem_object *obj, | |
91af127f JH |
3180 | struct intel_engine_cs *to, |
3181 | struct drm_i915_gem_request **to_req) | |
2911a35b | 3182 | { |
b4716185 CW |
3183 | const bool readonly = obj->base.pending_write_domain == 0; |
3184 | struct drm_i915_gem_request *req[I915_NUM_RINGS]; | |
3185 | int ret, i, n; | |
41c52415 | 3186 | |
b4716185 | 3187 | if (!obj->active) |
2911a35b BW |
3188 | return 0; |
3189 | ||
b4716185 CW |
3190 | if (to == NULL) |
3191 | return i915_gem_object_wait_rendering(obj, readonly); | |
2911a35b | 3192 | |
b4716185 CW |
3193 | n = 0; |
3194 | if (readonly) { | |
3195 | if (obj->last_write_req) | |
3196 | req[n++] = obj->last_write_req; | |
3197 | } else { | |
3198 | for (i = 0; i < I915_NUM_RINGS; i++) | |
3199 | if (obj->last_read_req[i]) | |
3200 | req[n++] = obj->last_read_req[i]; | |
3201 | } | |
3202 | for (i = 0; i < n; i++) { | |
91af127f | 3203 | ret = __i915_gem_object_sync(obj, to, req[i], to_req); |
b4716185 CW |
3204 | if (ret) |
3205 | return ret; | |
3206 | } | |
2911a35b | 3207 | |
b4716185 | 3208 | return 0; |
2911a35b BW |
3209 | } |
3210 | ||
b5ffc9bc CW |
3211 | static void i915_gem_object_finish_gtt(struct drm_i915_gem_object *obj) |
3212 | { | |
3213 | u32 old_write_domain, old_read_domains; | |
3214 | ||
b5ffc9bc CW |
3215 | /* Force a pagefault for domain tracking on next user access */ |
3216 | i915_gem_release_mmap(obj); | |
3217 | ||
b97c3d9c KP |
3218 | if ((obj->base.read_domains & I915_GEM_DOMAIN_GTT) == 0) |
3219 | return; | |
3220 | ||
97c809fd CW |
3221 | /* Wait for any direct GTT access to complete */ |
3222 | mb(); | |
3223 | ||
b5ffc9bc CW |
3224 | old_read_domains = obj->base.read_domains; |
3225 | old_write_domain = obj->base.write_domain; | |
3226 | ||
3227 | obj->base.read_domains &= ~I915_GEM_DOMAIN_GTT; | |
3228 | obj->base.write_domain &= ~I915_GEM_DOMAIN_GTT; | |
3229 | ||
3230 | trace_i915_gem_object_change_domain(obj, | |
3231 | old_read_domains, | |
3232 | old_write_domain); | |
3233 | } | |
3234 | ||
07fe0b12 | 3235 | int i915_vma_unbind(struct i915_vma *vma) |
673a394b | 3236 | { |
07fe0b12 | 3237 | struct drm_i915_gem_object *obj = vma->obj; |
3e31c6c0 | 3238 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
43e28f09 | 3239 | int ret; |
673a394b | 3240 | |
07fe0b12 | 3241 | if (list_empty(&vma->vma_link)) |
673a394b EA |
3242 | return 0; |
3243 | ||
0ff501cb DV |
3244 | if (!drm_mm_node_allocated(&vma->node)) { |
3245 | i915_gem_vma_destroy(vma); | |
0ff501cb DV |
3246 | return 0; |
3247 | } | |
433544bd | 3248 | |
d7f46fc4 | 3249 | if (vma->pin_count) |
31d8d651 | 3250 | return -EBUSY; |
673a394b | 3251 | |
c4670ad0 CW |
3252 | BUG_ON(obj->pages == NULL); |
3253 | ||
2e2f351d | 3254 | ret = i915_gem_object_wait_rendering(obj, false); |
1488fc08 | 3255 | if (ret) |
a8198eea CW |
3256 | return ret; |
3257 | /* Continue on if we fail due to EIO, the GPU is hung so we | |
3258 | * should be safe and we need to cleanup or else we might | |
3259 | * cause memory corruption through use-after-free. | |
3260 | */ | |
3261 | ||
fe14d5f4 TU |
3262 | if (i915_is_ggtt(vma->vm) && |
3263 | vma->ggtt_view.type == I915_GGTT_VIEW_NORMAL) { | |
8b1bc9b4 | 3264 | i915_gem_object_finish_gtt(obj); |
5323fd04 | 3265 | |
8b1bc9b4 DV |
3266 | /* release the fence reg _after_ flushing */ |
3267 | ret = i915_gem_object_put_fence(obj); | |
3268 | if (ret) | |
3269 | return ret; | |
3270 | } | |
96b47b65 | 3271 | |
07fe0b12 | 3272 | trace_i915_vma_unbind(vma); |
db53a302 | 3273 | |
777dc5bb | 3274 | vma->vm->unbind_vma(vma); |
5e562f1d | 3275 | vma->bound = 0; |
6f65e29a | 3276 | |
64bf9303 | 3277 | list_del_init(&vma->mm_list); |
fe14d5f4 TU |
3278 | if (i915_is_ggtt(vma->vm)) { |
3279 | if (vma->ggtt_view.type == I915_GGTT_VIEW_NORMAL) { | |
3280 | obj->map_and_fenceable = false; | |
3281 | } else if (vma->ggtt_view.pages) { | |
3282 | sg_free_table(vma->ggtt_view.pages); | |
3283 | kfree(vma->ggtt_view.pages); | |
3284 | vma->ggtt_view.pages = NULL; | |
3285 | } | |
3286 | } | |
673a394b | 3287 | |
2f633156 BW |
3288 | drm_mm_remove_node(&vma->node); |
3289 | i915_gem_vma_destroy(vma); | |
3290 | ||
3291 | /* Since the unbound list is global, only move to that list if | |
b93dab6e | 3292 | * no more VMAs exist. */ |
9490edb5 AR |
3293 | if (list_empty(&obj->vma_list)) { |
3294 | i915_gem_gtt_finish_object(obj); | |
2f633156 | 3295 | list_move_tail(&obj->global_list, &dev_priv->mm.unbound_list); |
9490edb5 | 3296 | } |
673a394b | 3297 | |
70903c3b CW |
3298 | /* And finally now the object is completely decoupled from this vma, |
3299 | * we can drop its hold on the backing storage and allow it to be | |
3300 | * reaped by the shrinker. | |
3301 | */ | |
3302 | i915_gem_object_unpin_pages(obj); | |
3303 | ||
88241785 | 3304 | return 0; |
54cf91dc CW |
3305 | } |
3306 | ||
b2da9fe5 | 3307 | int i915_gpu_idle(struct drm_device *dev) |
4df2faf4 | 3308 | { |
3e31c6c0 | 3309 | struct drm_i915_private *dev_priv = dev->dev_private; |
a4872ba6 | 3310 | struct intel_engine_cs *ring; |
1ec14ad3 | 3311 | int ret, i; |
4df2faf4 | 3312 | |
4df2faf4 | 3313 | /* Flush everything onto the inactive list. */ |
b4519513 | 3314 | for_each_ring(ring, dev_priv, i) { |
ecdb5fd8 | 3315 | if (!i915.enable_execlists) { |
73cfa865 JH |
3316 | struct drm_i915_gem_request *req; |
3317 | ||
3318 | ret = i915_gem_request_alloc(ring, ring->default_context, &req); | |
ecdb5fd8 TD |
3319 | if (ret) |
3320 | return ret; | |
73cfa865 | 3321 | |
ba01cc93 | 3322 | ret = i915_switch_context(req); |
73cfa865 JH |
3323 | if (ret) { |
3324 | i915_gem_request_cancel(req); | |
3325 | return ret; | |
3326 | } | |
3327 | ||
75289874 | 3328 | i915_add_request_no_flush(req); |
ecdb5fd8 | 3329 | } |
b6c7488d | 3330 | |
3e960501 | 3331 | ret = intel_ring_idle(ring); |
1ec14ad3 CW |
3332 | if (ret) |
3333 | return ret; | |
3334 | } | |
4df2faf4 | 3335 | |
b4716185 | 3336 | WARN_ON(i915_verify_lists(dev)); |
8a1a49f9 | 3337 | return 0; |
4df2faf4 DV |
3338 | } |
3339 | ||
9ce079e4 CW |
3340 | static void i965_write_fence_reg(struct drm_device *dev, int reg, |
3341 | struct drm_i915_gem_object *obj) | |
de151cf6 | 3342 | { |
3e31c6c0 | 3343 | struct drm_i915_private *dev_priv = dev->dev_private; |
56c844e5 ID |
3344 | int fence_reg; |
3345 | int fence_pitch_shift; | |
de151cf6 | 3346 | |
56c844e5 ID |
3347 | if (INTEL_INFO(dev)->gen >= 6) { |
3348 | fence_reg = FENCE_REG_SANDYBRIDGE_0; | |
3349 | fence_pitch_shift = SANDYBRIDGE_FENCE_PITCH_SHIFT; | |
3350 | } else { | |
3351 | fence_reg = FENCE_REG_965_0; | |
3352 | fence_pitch_shift = I965_FENCE_PITCH_SHIFT; | |
3353 | } | |
3354 | ||
d18b9619 CW |
3355 | fence_reg += reg * 8; |
3356 | ||
3357 | /* To w/a incoherency with non-atomic 64-bit register updates, | |
3358 | * we split the 64-bit update into two 32-bit writes. In order | |
3359 | * for a partial fence not to be evaluated between writes, we | |
3360 | * precede the update with write to turn off the fence register, | |
3361 | * and only enable the fence as the last step. | |
3362 | * | |
3363 | * For extra levels of paranoia, we make sure each step lands | |
3364 | * before applying the next step. | |
3365 | */ | |
3366 | I915_WRITE(fence_reg, 0); | |
3367 | POSTING_READ(fence_reg); | |
3368 | ||
9ce079e4 | 3369 | if (obj) { |
f343c5f6 | 3370 | u32 size = i915_gem_obj_ggtt_size(obj); |
d18b9619 | 3371 | uint64_t val; |
de151cf6 | 3372 | |
af1a7301 BP |
3373 | /* Adjust fence size to match tiled area */ |
3374 | if (obj->tiling_mode != I915_TILING_NONE) { | |
3375 | uint32_t row_size = obj->stride * | |
3376 | (obj->tiling_mode == I915_TILING_Y ? 32 : 8); | |
3377 | size = (size / row_size) * row_size; | |
3378 | } | |
3379 | ||
f343c5f6 | 3380 | val = (uint64_t)((i915_gem_obj_ggtt_offset(obj) + size - 4096) & |
9ce079e4 | 3381 | 0xfffff000) << 32; |
f343c5f6 | 3382 | val |= i915_gem_obj_ggtt_offset(obj) & 0xfffff000; |
56c844e5 | 3383 | val |= (uint64_t)((obj->stride / 128) - 1) << fence_pitch_shift; |
9ce079e4 CW |
3384 | if (obj->tiling_mode == I915_TILING_Y) |
3385 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; | |
3386 | val |= I965_FENCE_REG_VALID; | |
c6642782 | 3387 | |
d18b9619 CW |
3388 | I915_WRITE(fence_reg + 4, val >> 32); |
3389 | POSTING_READ(fence_reg + 4); | |
3390 | ||
3391 | I915_WRITE(fence_reg + 0, val); | |
3392 | POSTING_READ(fence_reg); | |
3393 | } else { | |
3394 | I915_WRITE(fence_reg + 4, 0); | |
3395 | POSTING_READ(fence_reg + 4); | |
3396 | } | |
de151cf6 JB |
3397 | } |
3398 | ||
9ce079e4 CW |
3399 | static void i915_write_fence_reg(struct drm_device *dev, int reg, |
3400 | struct drm_i915_gem_object *obj) | |
de151cf6 | 3401 | { |
3e31c6c0 | 3402 | struct drm_i915_private *dev_priv = dev->dev_private; |
9ce079e4 | 3403 | u32 val; |
de151cf6 | 3404 | |
9ce079e4 | 3405 | if (obj) { |
f343c5f6 | 3406 | u32 size = i915_gem_obj_ggtt_size(obj); |
9ce079e4 CW |
3407 | int pitch_val; |
3408 | int tile_width; | |
c6642782 | 3409 | |
f343c5f6 | 3410 | WARN((i915_gem_obj_ggtt_offset(obj) & ~I915_FENCE_START_MASK) || |
9ce079e4 | 3411 | (size & -size) != size || |
f343c5f6 BW |
3412 | (i915_gem_obj_ggtt_offset(obj) & (size - 1)), |
3413 | "object 0x%08lx [fenceable? %d] not 1M or pot-size (0x%08x) aligned\n", | |
3414 | i915_gem_obj_ggtt_offset(obj), obj->map_and_fenceable, size); | |
c6642782 | 3415 | |
9ce079e4 CW |
3416 | if (obj->tiling_mode == I915_TILING_Y && HAS_128_BYTE_Y_TILING(dev)) |
3417 | tile_width = 128; | |
3418 | else | |
3419 | tile_width = 512; | |
3420 | ||
3421 | /* Note: pitch better be a power of two tile widths */ | |
3422 | pitch_val = obj->stride / tile_width; | |
3423 | pitch_val = ffs(pitch_val) - 1; | |
3424 | ||
f343c5f6 | 3425 | val = i915_gem_obj_ggtt_offset(obj); |
9ce079e4 CW |
3426 | if (obj->tiling_mode == I915_TILING_Y) |
3427 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; | |
3428 | val |= I915_FENCE_SIZE_BITS(size); | |
3429 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; | |
3430 | val |= I830_FENCE_REG_VALID; | |
3431 | } else | |
3432 | val = 0; | |
3433 | ||
3434 | if (reg < 8) | |
3435 | reg = FENCE_REG_830_0 + reg * 4; | |
3436 | else | |
3437 | reg = FENCE_REG_945_8 + (reg - 8) * 4; | |
3438 | ||
3439 | I915_WRITE(reg, val); | |
3440 | POSTING_READ(reg); | |
de151cf6 JB |
3441 | } |
3442 | ||
9ce079e4 CW |
3443 | static void i830_write_fence_reg(struct drm_device *dev, int reg, |
3444 | struct drm_i915_gem_object *obj) | |
de151cf6 | 3445 | { |
3e31c6c0 | 3446 | struct drm_i915_private *dev_priv = dev->dev_private; |
de151cf6 | 3447 | uint32_t val; |
de151cf6 | 3448 | |
9ce079e4 | 3449 | if (obj) { |
f343c5f6 | 3450 | u32 size = i915_gem_obj_ggtt_size(obj); |
9ce079e4 | 3451 | uint32_t pitch_val; |
de151cf6 | 3452 | |
f343c5f6 | 3453 | WARN((i915_gem_obj_ggtt_offset(obj) & ~I830_FENCE_START_MASK) || |
9ce079e4 | 3454 | (size & -size) != size || |
f343c5f6 BW |
3455 | (i915_gem_obj_ggtt_offset(obj) & (size - 1)), |
3456 | "object 0x%08lx not 512K or pot-size 0x%08x aligned\n", | |
3457 | i915_gem_obj_ggtt_offset(obj), size); | |
e76a16de | 3458 | |
9ce079e4 CW |
3459 | pitch_val = obj->stride / 128; |
3460 | pitch_val = ffs(pitch_val) - 1; | |
de151cf6 | 3461 | |
f343c5f6 | 3462 | val = i915_gem_obj_ggtt_offset(obj); |
9ce079e4 CW |
3463 | if (obj->tiling_mode == I915_TILING_Y) |
3464 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; | |
3465 | val |= I830_FENCE_SIZE_BITS(size); | |
3466 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; | |
3467 | val |= I830_FENCE_REG_VALID; | |
3468 | } else | |
3469 | val = 0; | |
c6642782 | 3470 | |
9ce079e4 CW |
3471 | I915_WRITE(FENCE_REG_830_0 + reg * 4, val); |
3472 | POSTING_READ(FENCE_REG_830_0 + reg * 4); | |
3473 | } | |
3474 | ||
d0a57789 CW |
3475 | inline static bool i915_gem_object_needs_mb(struct drm_i915_gem_object *obj) |
3476 | { | |
3477 | return obj && obj->base.read_domains & I915_GEM_DOMAIN_GTT; | |
3478 | } | |
3479 | ||
9ce079e4 CW |
3480 | static void i915_gem_write_fence(struct drm_device *dev, int reg, |
3481 | struct drm_i915_gem_object *obj) | |
3482 | { | |
d0a57789 CW |
3483 | struct drm_i915_private *dev_priv = dev->dev_private; |
3484 | ||
3485 | /* Ensure that all CPU reads are completed before installing a fence | |
3486 | * and all writes before removing the fence. | |
3487 | */ | |
3488 | if (i915_gem_object_needs_mb(dev_priv->fence_regs[reg].obj)) | |
3489 | mb(); | |
3490 | ||
94a335db DV |
3491 | WARN(obj && (!obj->stride || !obj->tiling_mode), |
3492 | "bogus fence setup with stride: 0x%x, tiling mode: %i\n", | |
3493 | obj->stride, obj->tiling_mode); | |
3494 | ||
ce38ab05 RV |
3495 | if (IS_GEN2(dev)) |
3496 | i830_write_fence_reg(dev, reg, obj); | |
3497 | else if (IS_GEN3(dev)) | |
3498 | i915_write_fence_reg(dev, reg, obj); | |
3499 | else if (INTEL_INFO(dev)->gen >= 4) | |
3500 | i965_write_fence_reg(dev, reg, obj); | |
d0a57789 CW |
3501 | |
3502 | /* And similarly be paranoid that no direct access to this region | |
3503 | * is reordered to before the fence is installed. | |
3504 | */ | |
3505 | if (i915_gem_object_needs_mb(obj)) | |
3506 | mb(); | |
de151cf6 JB |
3507 | } |
3508 | ||
61050808 CW |
3509 | static inline int fence_number(struct drm_i915_private *dev_priv, |
3510 | struct drm_i915_fence_reg *fence) | |
3511 | { | |
3512 | return fence - dev_priv->fence_regs; | |
3513 | } | |
3514 | ||
3515 | static void i915_gem_object_update_fence(struct drm_i915_gem_object *obj, | |
3516 | struct drm_i915_fence_reg *fence, | |
3517 | bool enable) | |
3518 | { | |
2dc8aae0 | 3519 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
46a0b638 CW |
3520 | int reg = fence_number(dev_priv, fence); |
3521 | ||
3522 | i915_gem_write_fence(obj->base.dev, reg, enable ? obj : NULL); | |
61050808 CW |
3523 | |
3524 | if (enable) { | |
46a0b638 | 3525 | obj->fence_reg = reg; |
61050808 CW |
3526 | fence->obj = obj; |
3527 | list_move_tail(&fence->lru_list, &dev_priv->mm.fence_list); | |
3528 | } else { | |
3529 | obj->fence_reg = I915_FENCE_REG_NONE; | |
3530 | fence->obj = NULL; | |
3531 | list_del_init(&fence->lru_list); | |
3532 | } | |
94a335db | 3533 | obj->fence_dirty = false; |
61050808 CW |
3534 | } |
3535 | ||
d9e86c0e | 3536 | static int |
d0a57789 | 3537 | i915_gem_object_wait_fence(struct drm_i915_gem_object *obj) |
d9e86c0e | 3538 | { |
97b2a6a1 | 3539 | if (obj->last_fenced_req) { |
a4b3a571 | 3540 | int ret = i915_wait_request(obj->last_fenced_req); |
18991845 CW |
3541 | if (ret) |
3542 | return ret; | |
d9e86c0e | 3543 | |
97b2a6a1 | 3544 | i915_gem_request_assign(&obj->last_fenced_req, NULL); |
d9e86c0e CW |
3545 | } |
3546 | ||
3547 | return 0; | |
3548 | } | |
3549 | ||
3550 | int | |
3551 | i915_gem_object_put_fence(struct drm_i915_gem_object *obj) | |
3552 | { | |
61050808 | 3553 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
f9c513e9 | 3554 | struct drm_i915_fence_reg *fence; |
d9e86c0e CW |
3555 | int ret; |
3556 | ||
d0a57789 | 3557 | ret = i915_gem_object_wait_fence(obj); |
d9e86c0e CW |
3558 | if (ret) |
3559 | return ret; | |
3560 | ||
61050808 CW |
3561 | if (obj->fence_reg == I915_FENCE_REG_NONE) |
3562 | return 0; | |
d9e86c0e | 3563 | |
f9c513e9 CW |
3564 | fence = &dev_priv->fence_regs[obj->fence_reg]; |
3565 | ||
aff10b30 DV |
3566 | if (WARN_ON(fence->pin_count)) |
3567 | return -EBUSY; | |
3568 | ||
61050808 | 3569 | i915_gem_object_fence_lost(obj); |
f9c513e9 | 3570 | i915_gem_object_update_fence(obj, fence, false); |
d9e86c0e CW |
3571 | |
3572 | return 0; | |
3573 | } | |
3574 | ||
3575 | static struct drm_i915_fence_reg * | |
a360bb1a | 3576 | i915_find_fence_reg(struct drm_device *dev) |
ae3db24a | 3577 | { |
ae3db24a | 3578 | struct drm_i915_private *dev_priv = dev->dev_private; |
8fe301ad | 3579 | struct drm_i915_fence_reg *reg, *avail; |
d9e86c0e | 3580 | int i; |
ae3db24a DV |
3581 | |
3582 | /* First try to find a free reg */ | |
d9e86c0e | 3583 | avail = NULL; |
ae3db24a DV |
3584 | for (i = dev_priv->fence_reg_start; i < dev_priv->num_fence_regs; i++) { |
3585 | reg = &dev_priv->fence_regs[i]; | |
3586 | if (!reg->obj) | |
d9e86c0e | 3587 | return reg; |
ae3db24a | 3588 | |
1690e1eb | 3589 | if (!reg->pin_count) |
d9e86c0e | 3590 | avail = reg; |
ae3db24a DV |
3591 | } |
3592 | ||
d9e86c0e | 3593 | if (avail == NULL) |
5dce5b93 | 3594 | goto deadlock; |
ae3db24a DV |
3595 | |
3596 | /* None available, try to steal one or wait for a user to finish */ | |
d9e86c0e | 3597 | list_for_each_entry(reg, &dev_priv->mm.fence_list, lru_list) { |
1690e1eb | 3598 | if (reg->pin_count) |
ae3db24a DV |
3599 | continue; |
3600 | ||
8fe301ad | 3601 | return reg; |
ae3db24a DV |
3602 | } |
3603 | ||
5dce5b93 CW |
3604 | deadlock: |
3605 | /* Wait for completion of pending flips which consume fences */ | |
3606 | if (intel_has_pending_fb_unpin(dev)) | |
3607 | return ERR_PTR(-EAGAIN); | |
3608 | ||
3609 | return ERR_PTR(-EDEADLK); | |
ae3db24a DV |
3610 | } |
3611 | ||
de151cf6 | 3612 | /** |
9a5a53b3 | 3613 | * i915_gem_object_get_fence - set up fencing for an object |
de151cf6 JB |
3614 | * @obj: object to map through a fence reg |
3615 | * | |
3616 | * When mapping objects through the GTT, userspace wants to be able to write | |
3617 | * to them without having to worry about swizzling if the object is tiled. | |
de151cf6 JB |
3618 | * This function walks the fence regs looking for a free one for @obj, |
3619 | * stealing one if it can't find any. | |
3620 | * | |
3621 | * It then sets up the reg based on the object's properties: address, pitch | |
3622 | * and tiling format. | |
9a5a53b3 CW |
3623 | * |
3624 | * For an untiled surface, this removes any existing fence. | |
de151cf6 | 3625 | */ |
8c4b8c3f | 3626 | int |
06d98131 | 3627 | i915_gem_object_get_fence(struct drm_i915_gem_object *obj) |
de151cf6 | 3628 | { |
05394f39 | 3629 | struct drm_device *dev = obj->base.dev; |
79e53945 | 3630 | struct drm_i915_private *dev_priv = dev->dev_private; |
14415745 | 3631 | bool enable = obj->tiling_mode != I915_TILING_NONE; |
d9e86c0e | 3632 | struct drm_i915_fence_reg *reg; |
ae3db24a | 3633 | int ret; |
de151cf6 | 3634 | |
14415745 CW |
3635 | /* Have we updated the tiling parameters upon the object and so |
3636 | * will need to serialise the write to the associated fence register? | |
3637 | */ | |
5d82e3e6 | 3638 | if (obj->fence_dirty) { |
d0a57789 | 3639 | ret = i915_gem_object_wait_fence(obj); |
14415745 CW |
3640 | if (ret) |
3641 | return ret; | |
3642 | } | |
9a5a53b3 | 3643 | |
d9e86c0e | 3644 | /* Just update our place in the LRU if our fence is getting reused. */ |
05394f39 CW |
3645 | if (obj->fence_reg != I915_FENCE_REG_NONE) { |
3646 | reg = &dev_priv->fence_regs[obj->fence_reg]; | |
5d82e3e6 | 3647 | if (!obj->fence_dirty) { |
14415745 CW |
3648 | list_move_tail(®->lru_list, |
3649 | &dev_priv->mm.fence_list); | |
3650 | return 0; | |
3651 | } | |
3652 | } else if (enable) { | |
e6a84468 CW |
3653 | if (WARN_ON(!obj->map_and_fenceable)) |
3654 | return -EINVAL; | |
3655 | ||
14415745 | 3656 | reg = i915_find_fence_reg(dev); |
5dce5b93 CW |
3657 | if (IS_ERR(reg)) |
3658 | return PTR_ERR(reg); | |
d9e86c0e | 3659 | |
14415745 CW |
3660 | if (reg->obj) { |
3661 | struct drm_i915_gem_object *old = reg->obj; | |
3662 | ||
d0a57789 | 3663 | ret = i915_gem_object_wait_fence(old); |
29c5a587 CW |
3664 | if (ret) |
3665 | return ret; | |
3666 | ||
14415745 | 3667 | i915_gem_object_fence_lost(old); |
29c5a587 | 3668 | } |
14415745 | 3669 | } else |
a09ba7fa | 3670 | return 0; |
a09ba7fa | 3671 | |
14415745 | 3672 | i915_gem_object_update_fence(obj, reg, enable); |
14415745 | 3673 | |
9ce079e4 | 3674 | return 0; |
de151cf6 JB |
3675 | } |
3676 | ||
4144f9b5 | 3677 | static bool i915_gem_valid_gtt_space(struct i915_vma *vma, |
42d6ab48 CW |
3678 | unsigned long cache_level) |
3679 | { | |
4144f9b5 | 3680 | struct drm_mm_node *gtt_space = &vma->node; |
42d6ab48 CW |
3681 | struct drm_mm_node *other; |
3682 | ||
4144f9b5 CW |
3683 | /* |
3684 | * On some machines we have to be careful when putting differing types | |
3685 | * of snoopable memory together to avoid the prefetcher crossing memory | |
3686 | * domains and dying. During vm initialisation, we decide whether or not | |
3687 | * these constraints apply and set the drm_mm.color_adjust | |
3688 | * appropriately. | |
42d6ab48 | 3689 | */ |
4144f9b5 | 3690 | if (vma->vm->mm.color_adjust == NULL) |
42d6ab48 CW |
3691 | return true; |
3692 | ||
c6cfb325 | 3693 | if (!drm_mm_node_allocated(gtt_space)) |
42d6ab48 CW |
3694 | return true; |
3695 | ||
3696 | if (list_empty(>t_space->node_list)) | |
3697 | return true; | |
3698 | ||
3699 | other = list_entry(gtt_space->node_list.prev, struct drm_mm_node, node_list); | |
3700 | if (other->allocated && !other->hole_follows && other->color != cache_level) | |
3701 | return false; | |
3702 | ||
3703 | other = list_entry(gtt_space->node_list.next, struct drm_mm_node, node_list); | |
3704 | if (other->allocated && !gtt_space->hole_follows && other->color != cache_level) | |
3705 | return false; | |
3706 | ||
3707 | return true; | |
3708 | } | |
3709 | ||
673a394b | 3710 | /** |
91e6711e JL |
3711 | * Finds free space in the GTT aperture and binds the object or a view of it |
3712 | * there. | |
673a394b | 3713 | */ |
262de145 | 3714 | static struct i915_vma * |
07fe0b12 BW |
3715 | i915_gem_object_bind_to_vm(struct drm_i915_gem_object *obj, |
3716 | struct i915_address_space *vm, | |
ec7adb6e | 3717 | const struct i915_ggtt_view *ggtt_view, |
07fe0b12 | 3718 | unsigned alignment, |
ec7adb6e | 3719 | uint64_t flags) |
673a394b | 3720 | { |
05394f39 | 3721 | struct drm_device *dev = obj->base.dev; |
3e31c6c0 | 3722 | struct drm_i915_private *dev_priv = dev->dev_private; |
5e783301 | 3723 | u32 size, fence_size, fence_alignment, unfenced_alignment; |
c44ef60e | 3724 | u64 start = |
d23db88c | 3725 | flags & PIN_OFFSET_BIAS ? flags & PIN_OFFSET_MASK : 0; |
c44ef60e | 3726 | u64 end = |
1ec9e26d | 3727 | flags & PIN_MAPPABLE ? dev_priv->gtt.mappable_end : vm->total; |
2f633156 | 3728 | struct i915_vma *vma; |
07f73f69 | 3729 | int ret; |
673a394b | 3730 | |
91e6711e JL |
3731 | if (i915_is_ggtt(vm)) { |
3732 | u32 view_size; | |
3733 | ||
3734 | if (WARN_ON(!ggtt_view)) | |
3735 | return ERR_PTR(-EINVAL); | |
ec7adb6e | 3736 | |
91e6711e JL |
3737 | view_size = i915_ggtt_view_size(obj, ggtt_view); |
3738 | ||
3739 | fence_size = i915_gem_get_gtt_size(dev, | |
3740 | view_size, | |
3741 | obj->tiling_mode); | |
3742 | fence_alignment = i915_gem_get_gtt_alignment(dev, | |
3743 | view_size, | |
3744 | obj->tiling_mode, | |
3745 | true); | |
3746 | unfenced_alignment = i915_gem_get_gtt_alignment(dev, | |
3747 | view_size, | |
3748 | obj->tiling_mode, | |
3749 | false); | |
3750 | size = flags & PIN_MAPPABLE ? fence_size : view_size; | |
3751 | } else { | |
3752 | fence_size = i915_gem_get_gtt_size(dev, | |
3753 | obj->base.size, | |
3754 | obj->tiling_mode); | |
3755 | fence_alignment = i915_gem_get_gtt_alignment(dev, | |
3756 | obj->base.size, | |
3757 | obj->tiling_mode, | |
3758 | true); | |
3759 | unfenced_alignment = | |
3760 | i915_gem_get_gtt_alignment(dev, | |
3761 | obj->base.size, | |
3762 | obj->tiling_mode, | |
3763 | false); | |
3764 | size = flags & PIN_MAPPABLE ? fence_size : obj->base.size; | |
3765 | } | |
a00b10c3 | 3766 | |
673a394b | 3767 | if (alignment == 0) |
1ec9e26d | 3768 | alignment = flags & PIN_MAPPABLE ? fence_alignment : |
5e783301 | 3769 | unfenced_alignment; |
1ec9e26d | 3770 | if (flags & PIN_MAPPABLE && alignment & (fence_alignment - 1)) { |
91e6711e JL |
3771 | DRM_DEBUG("Invalid object (view type=%u) alignment requested %u\n", |
3772 | ggtt_view ? ggtt_view->type : 0, | |
3773 | alignment); | |
262de145 | 3774 | return ERR_PTR(-EINVAL); |
673a394b EA |
3775 | } |
3776 | ||
91e6711e JL |
3777 | /* If binding the object/GGTT view requires more space than the entire |
3778 | * aperture has, reject it early before evicting everything in a vain | |
3779 | * attempt to find space. | |
654fc607 | 3780 | */ |
91e6711e | 3781 | if (size > end) { |
c44ef60e | 3782 | DRM_DEBUG("Attempting to bind an object (view type=%u) larger than the aperture: size=%u > %s aperture=%llu\n", |
91e6711e JL |
3783 | ggtt_view ? ggtt_view->type : 0, |
3784 | size, | |
1ec9e26d | 3785 | flags & PIN_MAPPABLE ? "mappable" : "total", |
d23db88c | 3786 | end); |
262de145 | 3787 | return ERR_PTR(-E2BIG); |
654fc607 CW |
3788 | } |
3789 | ||
37e680a1 | 3790 | ret = i915_gem_object_get_pages(obj); |
6c085a72 | 3791 | if (ret) |
262de145 | 3792 | return ERR_PTR(ret); |
6c085a72 | 3793 | |
fbdda6fb CW |
3794 | i915_gem_object_pin_pages(obj); |
3795 | ||
ec7adb6e JL |
3796 | vma = ggtt_view ? i915_gem_obj_lookup_or_create_ggtt_vma(obj, ggtt_view) : |
3797 | i915_gem_obj_lookup_or_create_vma(obj, vm); | |
3798 | ||
262de145 | 3799 | if (IS_ERR(vma)) |
bc6bc15b | 3800 | goto err_unpin; |
2f633156 | 3801 | |
0a9ae0d7 | 3802 | search_free: |
07fe0b12 | 3803 | ret = drm_mm_insert_node_in_range_generic(&vm->mm, &vma->node, |
0a9ae0d7 | 3804 | size, alignment, |
d23db88c CW |
3805 | obj->cache_level, |
3806 | start, end, | |
62347f9e LK |
3807 | DRM_MM_SEARCH_DEFAULT, |
3808 | DRM_MM_CREATE_DEFAULT); | |
dc9dd7a2 | 3809 | if (ret) { |
f6cd1f15 | 3810 | ret = i915_gem_evict_something(dev, vm, size, alignment, |
d23db88c CW |
3811 | obj->cache_level, |
3812 | start, end, | |
3813 | flags); | |
dc9dd7a2 CW |
3814 | if (ret == 0) |
3815 | goto search_free; | |
9731129c | 3816 | |
bc6bc15b | 3817 | goto err_free_vma; |
673a394b | 3818 | } |
4144f9b5 | 3819 | if (WARN_ON(!i915_gem_valid_gtt_space(vma, obj->cache_level))) { |
2f633156 | 3820 | ret = -EINVAL; |
bc6bc15b | 3821 | goto err_remove_node; |
673a394b EA |
3822 | } |
3823 | ||
74163907 | 3824 | ret = i915_gem_gtt_prepare_object(obj); |
2f633156 | 3825 | if (ret) |
bc6bc15b | 3826 | goto err_remove_node; |
673a394b | 3827 | |
fe14d5f4 | 3828 | trace_i915_vma_bind(vma, flags); |
0875546c | 3829 | ret = i915_vma_bind(vma, obj->cache_level, flags); |
fe14d5f4 TU |
3830 | if (ret) |
3831 | goto err_finish_gtt; | |
3832 | ||
35c20a60 | 3833 | list_move_tail(&obj->global_list, &dev_priv->mm.bound_list); |
ca191b13 | 3834 | list_add_tail(&vma->mm_list, &vm->inactive_list); |
bf1a1092 | 3835 | |
262de145 | 3836 | return vma; |
2f633156 | 3837 | |
fe14d5f4 TU |
3838 | err_finish_gtt: |
3839 | i915_gem_gtt_finish_object(obj); | |
bc6bc15b | 3840 | err_remove_node: |
6286ef9b | 3841 | drm_mm_remove_node(&vma->node); |
bc6bc15b | 3842 | err_free_vma: |
2f633156 | 3843 | i915_gem_vma_destroy(vma); |
262de145 | 3844 | vma = ERR_PTR(ret); |
bc6bc15b | 3845 | err_unpin: |
2f633156 | 3846 | i915_gem_object_unpin_pages(obj); |
262de145 | 3847 | return vma; |
673a394b EA |
3848 | } |
3849 | ||
000433b6 | 3850 | bool |
2c22569b CW |
3851 | i915_gem_clflush_object(struct drm_i915_gem_object *obj, |
3852 | bool force) | |
673a394b | 3853 | { |
673a394b EA |
3854 | /* If we don't have a page list set up, then we're not pinned |
3855 | * to GPU, and we can ignore the cache flush because it'll happen | |
3856 | * again at bind time. | |
3857 | */ | |
05394f39 | 3858 | if (obj->pages == NULL) |
000433b6 | 3859 | return false; |
673a394b | 3860 | |
769ce464 ID |
3861 | /* |
3862 | * Stolen memory is always coherent with the GPU as it is explicitly | |
3863 | * marked as wc by the system, or the system is cache-coherent. | |
3864 | */ | |
6a2c4232 | 3865 | if (obj->stolen || obj->phys_handle) |
000433b6 | 3866 | return false; |
769ce464 | 3867 | |
9c23f7fc CW |
3868 | /* If the GPU is snooping the contents of the CPU cache, |
3869 | * we do not need to manually clear the CPU cache lines. However, | |
3870 | * the caches are only snooped when the render cache is | |
3871 | * flushed/invalidated. As we always have to emit invalidations | |
3872 | * and flushes when moving into and out of the RENDER domain, correct | |
3873 | * snooping behaviour occurs naturally as the result of our domain | |
3874 | * tracking. | |
3875 | */ | |
0f71979a CW |
3876 | if (!force && cpu_cache_is_coherent(obj->base.dev, obj->cache_level)) { |
3877 | obj->cache_dirty = true; | |
000433b6 | 3878 | return false; |
0f71979a | 3879 | } |
9c23f7fc | 3880 | |
1c5d22f7 | 3881 | trace_i915_gem_object_clflush(obj); |
9da3da66 | 3882 | drm_clflush_sg(obj->pages); |
0f71979a | 3883 | obj->cache_dirty = false; |
000433b6 CW |
3884 | |
3885 | return true; | |
e47c68e9 EA |
3886 | } |
3887 | ||
3888 | /** Flushes the GTT write domain for the object if it's dirty. */ | |
3889 | static void | |
05394f39 | 3890 | i915_gem_object_flush_gtt_write_domain(struct drm_i915_gem_object *obj) |
e47c68e9 | 3891 | { |
1c5d22f7 CW |
3892 | uint32_t old_write_domain; |
3893 | ||
05394f39 | 3894 | if (obj->base.write_domain != I915_GEM_DOMAIN_GTT) |
e47c68e9 EA |
3895 | return; |
3896 | ||
63256ec5 | 3897 | /* No actual flushing is required for the GTT write domain. Writes |
e47c68e9 EA |
3898 | * to it immediately go to main memory as far as we know, so there's |
3899 | * no chipset flush. It also doesn't land in render cache. | |
63256ec5 CW |
3900 | * |
3901 | * However, we do have to enforce the order so that all writes through | |
3902 | * the GTT land before any writes to the device, such as updates to | |
3903 | * the GATT itself. | |
e47c68e9 | 3904 | */ |
63256ec5 CW |
3905 | wmb(); |
3906 | ||
05394f39 CW |
3907 | old_write_domain = obj->base.write_domain; |
3908 | obj->base.write_domain = 0; | |
1c5d22f7 | 3909 | |
f99d7069 DV |
3910 | intel_fb_obj_flush(obj, false); |
3911 | ||
1c5d22f7 | 3912 | trace_i915_gem_object_change_domain(obj, |
05394f39 | 3913 | obj->base.read_domains, |
1c5d22f7 | 3914 | old_write_domain); |
e47c68e9 EA |
3915 | } |
3916 | ||
3917 | /** Flushes the CPU write domain for the object if it's dirty. */ | |
3918 | static void | |
e62b59e4 | 3919 | i915_gem_object_flush_cpu_write_domain(struct drm_i915_gem_object *obj) |
e47c68e9 | 3920 | { |
1c5d22f7 | 3921 | uint32_t old_write_domain; |
e47c68e9 | 3922 | |
05394f39 | 3923 | if (obj->base.write_domain != I915_GEM_DOMAIN_CPU) |
e47c68e9 EA |
3924 | return; |
3925 | ||
e62b59e4 | 3926 | if (i915_gem_clflush_object(obj, obj->pin_display)) |
000433b6 CW |
3927 | i915_gem_chipset_flush(obj->base.dev); |
3928 | ||
05394f39 CW |
3929 | old_write_domain = obj->base.write_domain; |
3930 | obj->base.write_domain = 0; | |
1c5d22f7 | 3931 | |
f99d7069 DV |
3932 | intel_fb_obj_flush(obj, false); |
3933 | ||
1c5d22f7 | 3934 | trace_i915_gem_object_change_domain(obj, |
05394f39 | 3935 | obj->base.read_domains, |
1c5d22f7 | 3936 | old_write_domain); |
e47c68e9 EA |
3937 | } |
3938 | ||
2ef7eeaa EA |
3939 | /** |
3940 | * Moves a single object to the GTT read, and possibly write domain. | |
3941 | * | |
3942 | * This function returns when the move is complete, including waiting on | |
3943 | * flushes to occur. | |
3944 | */ | |
79e53945 | 3945 | int |
2021746e | 3946 | i915_gem_object_set_to_gtt_domain(struct drm_i915_gem_object *obj, bool write) |
2ef7eeaa | 3947 | { |
1c5d22f7 | 3948 | uint32_t old_write_domain, old_read_domains; |
43566ded | 3949 | struct i915_vma *vma; |
e47c68e9 | 3950 | int ret; |
2ef7eeaa | 3951 | |
8d7e3de1 CW |
3952 | if (obj->base.write_domain == I915_GEM_DOMAIN_GTT) |
3953 | return 0; | |
3954 | ||
0201f1ec | 3955 | ret = i915_gem_object_wait_rendering(obj, !write); |
88241785 CW |
3956 | if (ret) |
3957 | return ret; | |
3958 | ||
43566ded CW |
3959 | /* Flush and acquire obj->pages so that we are coherent through |
3960 | * direct access in memory with previous cached writes through | |
3961 | * shmemfs and that our cache domain tracking remains valid. | |
3962 | * For example, if the obj->filp was moved to swap without us | |
3963 | * being notified and releasing the pages, we would mistakenly | |
3964 | * continue to assume that the obj remained out of the CPU cached | |
3965 | * domain. | |
3966 | */ | |
3967 | ret = i915_gem_object_get_pages(obj); | |
3968 | if (ret) | |
3969 | return ret; | |
3970 | ||
e62b59e4 | 3971 | i915_gem_object_flush_cpu_write_domain(obj); |
1c5d22f7 | 3972 | |
d0a57789 CW |
3973 | /* Serialise direct access to this object with the barriers for |
3974 | * coherent writes from the GPU, by effectively invalidating the | |
3975 | * GTT domain upon first access. | |
3976 | */ | |
3977 | if ((obj->base.read_domains & I915_GEM_DOMAIN_GTT) == 0) | |
3978 | mb(); | |
3979 | ||
05394f39 CW |
3980 | old_write_domain = obj->base.write_domain; |
3981 | old_read_domains = obj->base.read_domains; | |
1c5d22f7 | 3982 | |
e47c68e9 EA |
3983 | /* It should now be out of any other write domains, and we can update |
3984 | * the domain values for our changes. | |
3985 | */ | |
05394f39 CW |
3986 | BUG_ON((obj->base.write_domain & ~I915_GEM_DOMAIN_GTT) != 0); |
3987 | obj->base.read_domains |= I915_GEM_DOMAIN_GTT; | |
e47c68e9 | 3988 | if (write) { |
05394f39 CW |
3989 | obj->base.read_domains = I915_GEM_DOMAIN_GTT; |
3990 | obj->base.write_domain = I915_GEM_DOMAIN_GTT; | |
3991 | obj->dirty = 1; | |
2ef7eeaa EA |
3992 | } |
3993 | ||
1c5d22f7 CW |
3994 | trace_i915_gem_object_change_domain(obj, |
3995 | old_read_domains, | |
3996 | old_write_domain); | |
3997 | ||
8325a09d | 3998 | /* And bump the LRU for this access */ |
43566ded CW |
3999 | vma = i915_gem_obj_to_ggtt(obj); |
4000 | if (vma && drm_mm_node_allocated(&vma->node) && !obj->active) | |
dc8cd1e7 | 4001 | list_move_tail(&vma->mm_list, |
43566ded | 4002 | &to_i915(obj->base.dev)->gtt.base.inactive_list); |
8325a09d | 4003 | |
e47c68e9 EA |
4004 | return 0; |
4005 | } | |
4006 | ||
e4ffd173 CW |
4007 | int i915_gem_object_set_cache_level(struct drm_i915_gem_object *obj, |
4008 | enum i915_cache_level cache_level) | |
4009 | { | |
7bddb01f | 4010 | struct drm_device *dev = obj->base.dev; |
df6f783a | 4011 | struct i915_vma *vma, *next; |
e4ffd173 CW |
4012 | int ret; |
4013 | ||
4014 | if (obj->cache_level == cache_level) | |
4015 | return 0; | |
4016 | ||
d7f46fc4 | 4017 | if (i915_gem_obj_is_pinned(obj)) { |
e4ffd173 CW |
4018 | DRM_DEBUG("can not change the cache level of pinned objects\n"); |
4019 | return -EBUSY; | |
4020 | } | |
4021 | ||
df6f783a | 4022 | list_for_each_entry_safe(vma, next, &obj->vma_list, vma_link) { |
4144f9b5 | 4023 | if (!i915_gem_valid_gtt_space(vma, cache_level)) { |
07fe0b12 | 4024 | ret = i915_vma_unbind(vma); |
3089c6f2 BW |
4025 | if (ret) |
4026 | return ret; | |
3089c6f2 | 4027 | } |
42d6ab48 CW |
4028 | } |
4029 | ||
3089c6f2 | 4030 | if (i915_gem_obj_bound_any(obj)) { |
2e2f351d | 4031 | ret = i915_gem_object_wait_rendering(obj, false); |
e4ffd173 CW |
4032 | if (ret) |
4033 | return ret; | |
4034 | ||
4035 | i915_gem_object_finish_gtt(obj); | |
4036 | ||
4037 | /* Before SandyBridge, you could not use tiling or fence | |
4038 | * registers with snooped memory, so relinquish any fences | |
4039 | * currently pointing to our region in the aperture. | |
4040 | */ | |
42d6ab48 | 4041 | if (INTEL_INFO(dev)->gen < 6) { |
e4ffd173 CW |
4042 | ret = i915_gem_object_put_fence(obj); |
4043 | if (ret) | |
4044 | return ret; | |
4045 | } | |
4046 | ||
6f65e29a | 4047 | list_for_each_entry(vma, &obj->vma_list, vma_link) |
fe14d5f4 TU |
4048 | if (drm_mm_node_allocated(&vma->node)) { |
4049 | ret = i915_vma_bind(vma, cache_level, | |
0875546c | 4050 | PIN_UPDATE); |
fe14d5f4 TU |
4051 | if (ret) |
4052 | return ret; | |
4053 | } | |
e4ffd173 CW |
4054 | } |
4055 | ||
2c22569b CW |
4056 | list_for_each_entry(vma, &obj->vma_list, vma_link) |
4057 | vma->node.color = cache_level; | |
4058 | obj->cache_level = cache_level; | |
4059 | ||
0f71979a CW |
4060 | if (obj->cache_dirty && |
4061 | obj->base.write_domain != I915_GEM_DOMAIN_CPU && | |
4062 | cpu_write_needs_clflush(obj)) { | |
4063 | if (i915_gem_clflush_object(obj, true)) | |
4064 | i915_gem_chipset_flush(obj->base.dev); | |
e4ffd173 CW |
4065 | } |
4066 | ||
e4ffd173 CW |
4067 | return 0; |
4068 | } | |
4069 | ||
199adf40 BW |
4070 | int i915_gem_get_caching_ioctl(struct drm_device *dev, void *data, |
4071 | struct drm_file *file) | |
e6994aee | 4072 | { |
199adf40 | 4073 | struct drm_i915_gem_caching *args = data; |
e6994aee | 4074 | struct drm_i915_gem_object *obj; |
e6994aee CW |
4075 | |
4076 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); | |
432be69d CW |
4077 | if (&obj->base == NULL) |
4078 | return -ENOENT; | |
e6994aee | 4079 | |
651d794f CW |
4080 | switch (obj->cache_level) { |
4081 | case I915_CACHE_LLC: | |
4082 | case I915_CACHE_L3_LLC: | |
4083 | args->caching = I915_CACHING_CACHED; | |
4084 | break; | |
4085 | ||
4257d3ba CW |
4086 | case I915_CACHE_WT: |
4087 | args->caching = I915_CACHING_DISPLAY; | |
4088 | break; | |
4089 | ||
651d794f CW |
4090 | default: |
4091 | args->caching = I915_CACHING_NONE; | |
4092 | break; | |
4093 | } | |
e6994aee | 4094 | |
432be69d CW |
4095 | drm_gem_object_unreference_unlocked(&obj->base); |
4096 | return 0; | |
e6994aee CW |
4097 | } |
4098 | ||
199adf40 BW |
4099 | int i915_gem_set_caching_ioctl(struct drm_device *dev, void *data, |
4100 | struct drm_file *file) | |
e6994aee | 4101 | { |
199adf40 | 4102 | struct drm_i915_gem_caching *args = data; |
e6994aee CW |
4103 | struct drm_i915_gem_object *obj; |
4104 | enum i915_cache_level level; | |
4105 | int ret; | |
4106 | ||
199adf40 BW |
4107 | switch (args->caching) { |
4108 | case I915_CACHING_NONE: | |
e6994aee CW |
4109 | level = I915_CACHE_NONE; |
4110 | break; | |
199adf40 | 4111 | case I915_CACHING_CACHED: |
e6994aee CW |
4112 | level = I915_CACHE_LLC; |
4113 | break; | |
4257d3ba CW |
4114 | case I915_CACHING_DISPLAY: |
4115 | level = HAS_WT(dev) ? I915_CACHE_WT : I915_CACHE_NONE; | |
4116 | break; | |
e6994aee CW |
4117 | default: |
4118 | return -EINVAL; | |
4119 | } | |
4120 | ||
3bc2913e BW |
4121 | ret = i915_mutex_lock_interruptible(dev); |
4122 | if (ret) | |
4123 | return ret; | |
4124 | ||
e6994aee CW |
4125 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
4126 | if (&obj->base == NULL) { | |
4127 | ret = -ENOENT; | |
4128 | goto unlock; | |
4129 | } | |
4130 | ||
4131 | ret = i915_gem_object_set_cache_level(obj, level); | |
4132 | ||
4133 | drm_gem_object_unreference(&obj->base); | |
4134 | unlock: | |
4135 | mutex_unlock(&dev->struct_mutex); | |
4136 | return ret; | |
4137 | } | |
4138 | ||
b9241ea3 | 4139 | /* |
2da3b9b9 CW |
4140 | * Prepare buffer for display plane (scanout, cursors, etc). |
4141 | * Can be called from an uninterruptible phase (modesetting) and allows | |
4142 | * any flushes to be pipelined (for pageflips). | |
b9241ea3 ZW |
4143 | */ |
4144 | int | |
2da3b9b9 CW |
4145 | i915_gem_object_pin_to_display_plane(struct drm_i915_gem_object *obj, |
4146 | u32 alignment, | |
e6617330 | 4147 | struct intel_engine_cs *pipelined, |
91af127f | 4148 | struct drm_i915_gem_request **pipelined_request, |
e6617330 | 4149 | const struct i915_ggtt_view *view) |
b9241ea3 | 4150 | { |
2da3b9b9 | 4151 | u32 old_read_domains, old_write_domain; |
b9241ea3 ZW |
4152 | int ret; |
4153 | ||
91af127f | 4154 | ret = i915_gem_object_sync(obj, pipelined, pipelined_request); |
b4716185 CW |
4155 | if (ret) |
4156 | return ret; | |
b9241ea3 | 4157 | |
cc98b413 CW |
4158 | /* Mark the pin_display early so that we account for the |
4159 | * display coherency whilst setting up the cache domains. | |
4160 | */ | |
8a0c39b1 | 4161 | obj->pin_display++; |
cc98b413 | 4162 | |
a7ef0640 EA |
4163 | /* The display engine is not coherent with the LLC cache on gen6. As |
4164 | * a result, we make sure that the pinning that is about to occur is | |
4165 | * done with uncached PTEs. This is lowest common denominator for all | |
4166 | * chipsets. | |
4167 | * | |
4168 | * However for gen6+, we could do better by using the GFDT bit instead | |
4169 | * of uncaching, which would allow us to flush all the LLC-cached data | |
4170 | * with that bit in the PTE to main memory with just one PIPE_CONTROL. | |
4171 | */ | |
651d794f CW |
4172 | ret = i915_gem_object_set_cache_level(obj, |
4173 | HAS_WT(obj->base.dev) ? I915_CACHE_WT : I915_CACHE_NONE); | |
a7ef0640 | 4174 | if (ret) |
cc98b413 | 4175 | goto err_unpin_display; |
a7ef0640 | 4176 | |
2da3b9b9 CW |
4177 | /* As the user may map the buffer once pinned in the display plane |
4178 | * (e.g. libkms for the bootup splash), we have to ensure that we | |
4179 | * always use map_and_fenceable for all scanout buffers. | |
4180 | */ | |
50470bb0 TU |
4181 | ret = i915_gem_object_ggtt_pin(obj, view, alignment, |
4182 | view->type == I915_GGTT_VIEW_NORMAL ? | |
4183 | PIN_MAPPABLE : 0); | |
2da3b9b9 | 4184 | if (ret) |
cc98b413 | 4185 | goto err_unpin_display; |
2da3b9b9 | 4186 | |
e62b59e4 | 4187 | i915_gem_object_flush_cpu_write_domain(obj); |
b118c1e3 | 4188 | |
2da3b9b9 | 4189 | old_write_domain = obj->base.write_domain; |
05394f39 | 4190 | old_read_domains = obj->base.read_domains; |
2da3b9b9 CW |
4191 | |
4192 | /* It should now be out of any other write domains, and we can update | |
4193 | * the domain values for our changes. | |
4194 | */ | |
e5f1d962 | 4195 | obj->base.write_domain = 0; |
05394f39 | 4196 | obj->base.read_domains |= I915_GEM_DOMAIN_GTT; |
b9241ea3 ZW |
4197 | |
4198 | trace_i915_gem_object_change_domain(obj, | |
4199 | old_read_domains, | |
2da3b9b9 | 4200 | old_write_domain); |
b9241ea3 ZW |
4201 | |
4202 | return 0; | |
cc98b413 CW |
4203 | |
4204 | err_unpin_display: | |
8a0c39b1 | 4205 | obj->pin_display--; |
cc98b413 CW |
4206 | return ret; |
4207 | } | |
4208 | ||
4209 | void | |
e6617330 TU |
4210 | i915_gem_object_unpin_from_display_plane(struct drm_i915_gem_object *obj, |
4211 | const struct i915_ggtt_view *view) | |
cc98b413 | 4212 | { |
8a0c39b1 TU |
4213 | if (WARN_ON(obj->pin_display == 0)) |
4214 | return; | |
4215 | ||
e6617330 TU |
4216 | i915_gem_object_ggtt_unpin_view(obj, view); |
4217 | ||
8a0c39b1 | 4218 | obj->pin_display--; |
b9241ea3 ZW |
4219 | } |
4220 | ||
e47c68e9 EA |
4221 | /** |
4222 | * Moves a single object to the CPU read, and possibly write domain. | |
4223 | * | |
4224 | * This function returns when the move is complete, including waiting on | |
4225 | * flushes to occur. | |
4226 | */ | |
dabdfe02 | 4227 | int |
919926ae | 4228 | i915_gem_object_set_to_cpu_domain(struct drm_i915_gem_object *obj, bool write) |
e47c68e9 | 4229 | { |
1c5d22f7 | 4230 | uint32_t old_write_domain, old_read_domains; |
e47c68e9 EA |
4231 | int ret; |
4232 | ||
8d7e3de1 CW |
4233 | if (obj->base.write_domain == I915_GEM_DOMAIN_CPU) |
4234 | return 0; | |
4235 | ||
0201f1ec | 4236 | ret = i915_gem_object_wait_rendering(obj, !write); |
88241785 CW |
4237 | if (ret) |
4238 | return ret; | |
4239 | ||
e47c68e9 | 4240 | i915_gem_object_flush_gtt_write_domain(obj); |
2ef7eeaa | 4241 | |
05394f39 CW |
4242 | old_write_domain = obj->base.write_domain; |
4243 | old_read_domains = obj->base.read_domains; | |
1c5d22f7 | 4244 | |
e47c68e9 | 4245 | /* Flush the CPU cache if it's still invalid. */ |
05394f39 | 4246 | if ((obj->base.read_domains & I915_GEM_DOMAIN_CPU) == 0) { |
2c22569b | 4247 | i915_gem_clflush_object(obj, false); |
2ef7eeaa | 4248 | |
05394f39 | 4249 | obj->base.read_domains |= I915_GEM_DOMAIN_CPU; |
2ef7eeaa EA |
4250 | } |
4251 | ||
4252 | /* It should now be out of any other write domains, and we can update | |
4253 | * the domain values for our changes. | |
4254 | */ | |
05394f39 | 4255 | BUG_ON((obj->base.write_domain & ~I915_GEM_DOMAIN_CPU) != 0); |
e47c68e9 EA |
4256 | |
4257 | /* If we're writing through the CPU, then the GPU read domains will | |
4258 | * need to be invalidated at next use. | |
4259 | */ | |
4260 | if (write) { | |
05394f39 CW |
4261 | obj->base.read_domains = I915_GEM_DOMAIN_CPU; |
4262 | obj->base.write_domain = I915_GEM_DOMAIN_CPU; | |
e47c68e9 | 4263 | } |
2ef7eeaa | 4264 | |
1c5d22f7 CW |
4265 | trace_i915_gem_object_change_domain(obj, |
4266 | old_read_domains, | |
4267 | old_write_domain); | |
4268 | ||
2ef7eeaa EA |
4269 | return 0; |
4270 | } | |
4271 | ||
673a394b EA |
4272 | /* Throttle our rendering by waiting until the ring has completed our requests |
4273 | * emitted over 20 msec ago. | |
4274 | * | |
b962442e EA |
4275 | * Note that if we were to use the current jiffies each time around the loop, |
4276 | * we wouldn't escape the function with any frames outstanding if the time to | |
4277 | * render a frame was over 20ms. | |
4278 | * | |
673a394b EA |
4279 | * This should get us reasonable parallelism between CPU and GPU but also |
4280 | * relatively low latency when blocking on a particular request to finish. | |
4281 | */ | |
40a5f0de | 4282 | static int |
f787a5f5 | 4283 | i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file) |
40a5f0de | 4284 | { |
f787a5f5 CW |
4285 | struct drm_i915_private *dev_priv = dev->dev_private; |
4286 | struct drm_i915_file_private *file_priv = file->driver_priv; | |
d0bc54f2 | 4287 | unsigned long recent_enough = jiffies - DRM_I915_THROTTLE_JIFFIES; |
54fb2411 | 4288 | struct drm_i915_gem_request *request, *target = NULL; |
f69061be | 4289 | unsigned reset_counter; |
f787a5f5 | 4290 | int ret; |
93533c29 | 4291 | |
308887aa DV |
4292 | ret = i915_gem_wait_for_error(&dev_priv->gpu_error); |
4293 | if (ret) | |
4294 | return ret; | |
4295 | ||
4296 | ret = i915_gem_check_wedge(&dev_priv->gpu_error, false); | |
4297 | if (ret) | |
4298 | return ret; | |
e110e8d6 | 4299 | |
1c25595f | 4300 | spin_lock(&file_priv->mm.lock); |
f787a5f5 | 4301 | list_for_each_entry(request, &file_priv->mm.request_list, client_list) { |
b962442e EA |
4302 | if (time_after_eq(request->emitted_jiffies, recent_enough)) |
4303 | break; | |
40a5f0de | 4304 | |
fcfa423c JH |
4305 | /* |
4306 | * Note that the request might not have been submitted yet. | |
4307 | * In which case emitted_jiffies will be zero. | |
4308 | */ | |
4309 | if (!request->emitted_jiffies) | |
4310 | continue; | |
4311 | ||
54fb2411 | 4312 | target = request; |
b962442e | 4313 | } |
f69061be | 4314 | reset_counter = atomic_read(&dev_priv->gpu_error.reset_counter); |
ff865885 JH |
4315 | if (target) |
4316 | i915_gem_request_reference(target); | |
1c25595f | 4317 | spin_unlock(&file_priv->mm.lock); |
40a5f0de | 4318 | |
54fb2411 | 4319 | if (target == NULL) |
f787a5f5 | 4320 | return 0; |
2bc43b5c | 4321 | |
9c654818 | 4322 | ret = __i915_wait_request(target, reset_counter, true, NULL, NULL); |
f787a5f5 CW |
4323 | if (ret == 0) |
4324 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, 0); | |
40a5f0de | 4325 | |
41037f9f | 4326 | i915_gem_request_unreference__unlocked(target); |
ff865885 | 4327 | |
40a5f0de EA |
4328 | return ret; |
4329 | } | |
4330 | ||
d23db88c CW |
4331 | static bool |
4332 | i915_vma_misplaced(struct i915_vma *vma, uint32_t alignment, uint64_t flags) | |
4333 | { | |
4334 | struct drm_i915_gem_object *obj = vma->obj; | |
4335 | ||
4336 | if (alignment && | |
4337 | vma->node.start & (alignment - 1)) | |
4338 | return true; | |
4339 | ||
4340 | if (flags & PIN_MAPPABLE && !obj->map_and_fenceable) | |
4341 | return true; | |
4342 | ||
4343 | if (flags & PIN_OFFSET_BIAS && | |
4344 | vma->node.start < (flags & PIN_OFFSET_MASK)) | |
4345 | return true; | |
4346 | ||
4347 | return false; | |
4348 | } | |
4349 | ||
ec7adb6e JL |
4350 | static int |
4351 | i915_gem_object_do_pin(struct drm_i915_gem_object *obj, | |
4352 | struct i915_address_space *vm, | |
4353 | const struct i915_ggtt_view *ggtt_view, | |
4354 | uint32_t alignment, | |
4355 | uint64_t flags) | |
673a394b | 4356 | { |
6e7186af | 4357 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; |
07fe0b12 | 4358 | struct i915_vma *vma; |
ef79e17c | 4359 | unsigned bound; |
673a394b EA |
4360 | int ret; |
4361 | ||
6e7186af BW |
4362 | if (WARN_ON(vm == &dev_priv->mm.aliasing_ppgtt->base)) |
4363 | return -ENODEV; | |
4364 | ||
bf3d149b | 4365 | if (WARN_ON(flags & (PIN_GLOBAL | PIN_MAPPABLE) && !i915_is_ggtt(vm))) |
1ec9e26d | 4366 | return -EINVAL; |
07fe0b12 | 4367 | |
c826c449 CW |
4368 | if (WARN_ON((flags & (PIN_MAPPABLE | PIN_GLOBAL)) == PIN_MAPPABLE)) |
4369 | return -EINVAL; | |
4370 | ||
ec7adb6e JL |
4371 | if (WARN_ON(i915_is_ggtt(vm) != !!ggtt_view)) |
4372 | return -EINVAL; | |
4373 | ||
4374 | vma = ggtt_view ? i915_gem_obj_to_ggtt_view(obj, ggtt_view) : | |
4375 | i915_gem_obj_to_vma(obj, vm); | |
4376 | ||
4377 | if (IS_ERR(vma)) | |
4378 | return PTR_ERR(vma); | |
4379 | ||
07fe0b12 | 4380 | if (vma) { |
d7f46fc4 BW |
4381 | if (WARN_ON(vma->pin_count == DRM_I915_GEM_OBJECT_MAX_PIN_COUNT)) |
4382 | return -EBUSY; | |
4383 | ||
d23db88c | 4384 | if (i915_vma_misplaced(vma, alignment, flags)) { |
ec7adb6e | 4385 | unsigned long offset; |
9abc4648 | 4386 | offset = ggtt_view ? i915_gem_obj_ggtt_offset_view(obj, ggtt_view) : |
ec7adb6e | 4387 | i915_gem_obj_offset(obj, vm); |
d7f46fc4 | 4388 | WARN(vma->pin_count, |
ec7adb6e | 4389 | "bo is already pinned in %s with incorrect alignment:" |
f343c5f6 | 4390 | " offset=%lx, req.alignment=%x, req.map_and_fenceable=%d," |
75e9e915 | 4391 | " obj->map_and_fenceable=%d\n", |
ec7adb6e JL |
4392 | ggtt_view ? "ggtt" : "ppgtt", |
4393 | offset, | |
fe14d5f4 | 4394 | alignment, |
d23db88c | 4395 | !!(flags & PIN_MAPPABLE), |
05394f39 | 4396 | obj->map_and_fenceable); |
07fe0b12 | 4397 | ret = i915_vma_unbind(vma); |
ac0c6b5a CW |
4398 | if (ret) |
4399 | return ret; | |
8ea99c92 DV |
4400 | |
4401 | vma = NULL; | |
ac0c6b5a CW |
4402 | } |
4403 | } | |
4404 | ||
ef79e17c | 4405 | bound = vma ? vma->bound : 0; |
8ea99c92 | 4406 | if (vma == NULL || !drm_mm_node_allocated(&vma->node)) { |
ec7adb6e JL |
4407 | vma = i915_gem_object_bind_to_vm(obj, vm, ggtt_view, alignment, |
4408 | flags); | |
262de145 DV |
4409 | if (IS_ERR(vma)) |
4410 | return PTR_ERR(vma); | |
0875546c DV |
4411 | } else { |
4412 | ret = i915_vma_bind(vma, obj->cache_level, flags); | |
fe14d5f4 TU |
4413 | if (ret) |
4414 | return ret; | |
4415 | } | |
74898d7e | 4416 | |
91e6711e JL |
4417 | if (ggtt_view && ggtt_view->type == I915_GGTT_VIEW_NORMAL && |
4418 | (bound ^ vma->bound) & GLOBAL_BIND) { | |
ef79e17c CW |
4419 | bool mappable, fenceable; |
4420 | u32 fence_size, fence_alignment; | |
4421 | ||
4422 | fence_size = i915_gem_get_gtt_size(obj->base.dev, | |
4423 | obj->base.size, | |
4424 | obj->tiling_mode); | |
4425 | fence_alignment = i915_gem_get_gtt_alignment(obj->base.dev, | |
4426 | obj->base.size, | |
4427 | obj->tiling_mode, | |
4428 | true); | |
4429 | ||
4430 | fenceable = (vma->node.size == fence_size && | |
4431 | (vma->node.start & (fence_alignment - 1)) == 0); | |
4432 | ||
e8dec1dd | 4433 | mappable = (vma->node.start + fence_size <= |
ef79e17c CW |
4434 | dev_priv->gtt.mappable_end); |
4435 | ||
4436 | obj->map_and_fenceable = mappable && fenceable; | |
ef79e17c | 4437 | |
91e6711e JL |
4438 | WARN_ON(flags & PIN_MAPPABLE && !obj->map_and_fenceable); |
4439 | } | |
ef79e17c | 4440 | |
8ea99c92 | 4441 | vma->pin_count++; |
673a394b EA |
4442 | return 0; |
4443 | } | |
4444 | ||
ec7adb6e JL |
4445 | int |
4446 | i915_gem_object_pin(struct drm_i915_gem_object *obj, | |
4447 | struct i915_address_space *vm, | |
4448 | uint32_t alignment, | |
4449 | uint64_t flags) | |
4450 | { | |
4451 | return i915_gem_object_do_pin(obj, vm, | |
4452 | i915_is_ggtt(vm) ? &i915_ggtt_view_normal : NULL, | |
4453 | alignment, flags); | |
4454 | } | |
4455 | ||
4456 | int | |
4457 | i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj, | |
4458 | const struct i915_ggtt_view *view, | |
4459 | uint32_t alignment, | |
4460 | uint64_t flags) | |
4461 | { | |
4462 | if (WARN_ONCE(!view, "no view specified")) | |
4463 | return -EINVAL; | |
4464 | ||
4465 | return i915_gem_object_do_pin(obj, i915_obj_to_ggtt(obj), view, | |
6fafab76 | 4466 | alignment, flags | PIN_GLOBAL); |
ec7adb6e JL |
4467 | } |
4468 | ||
673a394b | 4469 | void |
e6617330 TU |
4470 | i915_gem_object_ggtt_unpin_view(struct drm_i915_gem_object *obj, |
4471 | const struct i915_ggtt_view *view) | |
673a394b | 4472 | { |
e6617330 | 4473 | struct i915_vma *vma = i915_gem_obj_to_ggtt_view(obj, view); |
673a394b | 4474 | |
d7f46fc4 | 4475 | BUG_ON(!vma); |
e6617330 | 4476 | WARN_ON(vma->pin_count == 0); |
9abc4648 | 4477 | WARN_ON(!i915_gem_obj_ggtt_bound_view(obj, view)); |
d7f46fc4 | 4478 | |
30154650 | 4479 | --vma->pin_count; |
673a394b EA |
4480 | } |
4481 | ||
d8ffa60b DV |
4482 | bool |
4483 | i915_gem_object_pin_fence(struct drm_i915_gem_object *obj) | |
4484 | { | |
4485 | if (obj->fence_reg != I915_FENCE_REG_NONE) { | |
4486 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; | |
4487 | struct i915_vma *ggtt_vma = i915_gem_obj_to_ggtt(obj); | |
4488 | ||
4489 | WARN_ON(!ggtt_vma || | |
4490 | dev_priv->fence_regs[obj->fence_reg].pin_count > | |
4491 | ggtt_vma->pin_count); | |
4492 | dev_priv->fence_regs[obj->fence_reg].pin_count++; | |
4493 | return true; | |
4494 | } else | |
4495 | return false; | |
4496 | } | |
4497 | ||
4498 | void | |
4499 | i915_gem_object_unpin_fence(struct drm_i915_gem_object *obj) | |
4500 | { | |
4501 | if (obj->fence_reg != I915_FENCE_REG_NONE) { | |
4502 | struct drm_i915_private *dev_priv = obj->base.dev->dev_private; | |
4503 | WARN_ON(dev_priv->fence_regs[obj->fence_reg].pin_count <= 0); | |
4504 | dev_priv->fence_regs[obj->fence_reg].pin_count--; | |
4505 | } | |
4506 | } | |
4507 | ||
673a394b EA |
4508 | int |
4509 | i915_gem_busy_ioctl(struct drm_device *dev, void *data, | |
05394f39 | 4510 | struct drm_file *file) |
673a394b EA |
4511 | { |
4512 | struct drm_i915_gem_busy *args = data; | |
05394f39 | 4513 | struct drm_i915_gem_object *obj; |
30dbf0c0 CW |
4514 | int ret; |
4515 | ||
76c1dec1 | 4516 | ret = i915_mutex_lock_interruptible(dev); |
1d7cfea1 | 4517 | if (ret) |
76c1dec1 | 4518 | return ret; |
673a394b | 4519 | |
05394f39 | 4520 | obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle)); |
c8725226 | 4521 | if (&obj->base == NULL) { |
1d7cfea1 CW |
4522 | ret = -ENOENT; |
4523 | goto unlock; | |
673a394b | 4524 | } |
d1b851fc | 4525 | |
0be555b6 CW |
4526 | /* Count all active objects as busy, even if they are currently not used |
4527 | * by the gpu. Users of this interface expect objects to eventually | |
4528 | * become non-busy without any further actions, therefore emit any | |
4529 | * necessary flushes here. | |
c4de0a5d | 4530 | */ |
30dfebf3 | 4531 | ret = i915_gem_object_flush_active(obj); |
b4716185 CW |
4532 | if (ret) |
4533 | goto unref; | |
0be555b6 | 4534 | |
b4716185 CW |
4535 | BUILD_BUG_ON(I915_NUM_RINGS > 16); |
4536 | args->busy = obj->active << 16; | |
4537 | if (obj->last_write_req) | |
4538 | args->busy |= obj->last_write_req->ring->id; | |
673a394b | 4539 | |
b4716185 | 4540 | unref: |
05394f39 | 4541 | drm_gem_object_unreference(&obj->base); |
1d7cfea1 | 4542 | unlock: |
673a394b | 4543 | mutex_unlock(&dev->struct_mutex); |
1d7cfea1 | 4544 | return ret; |
673a394b EA |
4545 | } |
4546 | ||
4547 | int | |
4548 | i915_gem_throttle_ioctl(struct drm_device *dev, void *data, | |
4549 | struct drm_file *file_priv) | |
4550 | { | |
0206e353 | 4551 | return i915_gem_ring_throttle(dev, file_priv); |
673a394b EA |
4552 | } |
4553 | ||
3ef94daa CW |
4554 | int |
4555 | i915_gem_madvise_ioctl(struct drm_device *dev, void *data, | |
4556 | struct drm_file *file_priv) | |
4557 | { | |
656bfa3a | 4558 | struct drm_i915_private *dev_priv = dev->dev_private; |
3ef94daa | 4559 | struct drm_i915_gem_madvise *args = data; |
05394f39 | 4560 | struct drm_i915_gem_object *obj; |
76c1dec1 | 4561 | int ret; |
3ef94daa CW |
4562 | |
4563 | switch (args->madv) { | |
4564 | case I915_MADV_DONTNEED: | |
4565 | case I915_MADV_WILLNEED: | |
4566 | break; | |
4567 | default: | |
4568 | return -EINVAL; | |
4569 | } | |
4570 | ||
1d7cfea1 CW |
4571 | ret = i915_mutex_lock_interruptible(dev); |
4572 | if (ret) | |
4573 | return ret; | |
4574 | ||
05394f39 | 4575 | obj = to_intel_bo(drm_gem_object_lookup(dev, file_priv, args->handle)); |
c8725226 | 4576 | if (&obj->base == NULL) { |
1d7cfea1 CW |
4577 | ret = -ENOENT; |
4578 | goto unlock; | |
3ef94daa | 4579 | } |
3ef94daa | 4580 | |
d7f46fc4 | 4581 | if (i915_gem_obj_is_pinned(obj)) { |
1d7cfea1 CW |
4582 | ret = -EINVAL; |
4583 | goto out; | |
3ef94daa CW |
4584 | } |
4585 | ||
656bfa3a DV |
4586 | if (obj->pages && |
4587 | obj->tiling_mode != I915_TILING_NONE && | |
4588 | dev_priv->quirks & QUIRK_PIN_SWIZZLED_PAGES) { | |
4589 | if (obj->madv == I915_MADV_WILLNEED) | |
4590 | i915_gem_object_unpin_pages(obj); | |
4591 | if (args->madv == I915_MADV_WILLNEED) | |
4592 | i915_gem_object_pin_pages(obj); | |
4593 | } | |
4594 | ||
05394f39 CW |
4595 | if (obj->madv != __I915_MADV_PURGED) |
4596 | obj->madv = args->madv; | |
3ef94daa | 4597 | |
6c085a72 | 4598 | /* if the object is no longer attached, discard its backing storage */ |
be6a0376 | 4599 | if (obj->madv == I915_MADV_DONTNEED && obj->pages == NULL) |
2d7ef395 CW |
4600 | i915_gem_object_truncate(obj); |
4601 | ||
05394f39 | 4602 | args->retained = obj->madv != __I915_MADV_PURGED; |
bb6baf76 | 4603 | |
1d7cfea1 | 4604 | out: |
05394f39 | 4605 | drm_gem_object_unreference(&obj->base); |
1d7cfea1 | 4606 | unlock: |
3ef94daa | 4607 | mutex_unlock(&dev->struct_mutex); |
1d7cfea1 | 4608 | return ret; |
3ef94daa CW |
4609 | } |
4610 | ||
37e680a1 CW |
4611 | void i915_gem_object_init(struct drm_i915_gem_object *obj, |
4612 | const struct drm_i915_gem_object_ops *ops) | |
0327d6ba | 4613 | { |
b4716185 CW |
4614 | int i; |
4615 | ||
35c20a60 | 4616 | INIT_LIST_HEAD(&obj->global_list); |
b4716185 CW |
4617 | for (i = 0; i < I915_NUM_RINGS; i++) |
4618 | INIT_LIST_HEAD(&obj->ring_list[i]); | |
b25cb2f8 | 4619 | INIT_LIST_HEAD(&obj->obj_exec_link); |
2f633156 | 4620 | INIT_LIST_HEAD(&obj->vma_list); |
8d9d5744 | 4621 | INIT_LIST_HEAD(&obj->batch_pool_link); |
0327d6ba | 4622 | |
37e680a1 CW |
4623 | obj->ops = ops; |
4624 | ||
0327d6ba CW |
4625 | obj->fence_reg = I915_FENCE_REG_NONE; |
4626 | obj->madv = I915_MADV_WILLNEED; | |
0327d6ba CW |
4627 | |
4628 | i915_gem_info_add_obj(obj->base.dev->dev_private, obj->base.size); | |
4629 | } | |
4630 | ||
37e680a1 CW |
4631 | static const struct drm_i915_gem_object_ops i915_gem_object_ops = { |
4632 | .get_pages = i915_gem_object_get_pages_gtt, | |
4633 | .put_pages = i915_gem_object_put_pages_gtt, | |
4634 | }; | |
4635 | ||
05394f39 CW |
4636 | struct drm_i915_gem_object *i915_gem_alloc_object(struct drm_device *dev, |
4637 | size_t size) | |
ac52bc56 | 4638 | { |
c397b908 | 4639 | struct drm_i915_gem_object *obj; |
5949eac4 | 4640 | struct address_space *mapping; |
1a240d4d | 4641 | gfp_t mask; |
ac52bc56 | 4642 | |
42dcedd4 | 4643 | obj = i915_gem_object_alloc(dev); |
c397b908 DV |
4644 | if (obj == NULL) |
4645 | return NULL; | |
673a394b | 4646 | |
c397b908 | 4647 | if (drm_gem_object_init(dev, &obj->base, size) != 0) { |
42dcedd4 | 4648 | i915_gem_object_free(obj); |
c397b908 DV |
4649 | return NULL; |
4650 | } | |
673a394b | 4651 | |
bed1ea95 CW |
4652 | mask = GFP_HIGHUSER | __GFP_RECLAIMABLE; |
4653 | if (IS_CRESTLINE(dev) || IS_BROADWATER(dev)) { | |
4654 | /* 965gm cannot relocate objects above 4GiB. */ | |
4655 | mask &= ~__GFP_HIGHMEM; | |
4656 | mask |= __GFP_DMA32; | |
4657 | } | |
4658 | ||
496ad9aa | 4659 | mapping = file_inode(obj->base.filp)->i_mapping; |
bed1ea95 | 4660 | mapping_set_gfp_mask(mapping, mask); |
5949eac4 | 4661 | |
37e680a1 | 4662 | i915_gem_object_init(obj, &i915_gem_object_ops); |
73aa808f | 4663 | |
c397b908 DV |
4664 | obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
4665 | obj->base.read_domains = I915_GEM_DOMAIN_CPU; | |
673a394b | 4666 | |
3d29b842 ED |
4667 | if (HAS_LLC(dev)) { |
4668 | /* On some devices, we can have the GPU use the LLC (the CPU | |
a1871112 EA |
4669 | * cache) for about a 10% performance improvement |
4670 | * compared to uncached. Graphics requests other than | |
4671 | * display scanout are coherent with the CPU in | |
4672 | * accessing this cache. This means in this mode we | |
4673 | * don't need to clflush on the CPU side, and on the | |
4674 | * GPU side we only need to flush internal caches to | |
4675 | * get data visible to the CPU. | |
4676 | * | |
4677 | * However, we maintain the display planes as UC, and so | |
4678 | * need to rebind when first used as such. | |
4679 | */ | |
4680 | obj->cache_level = I915_CACHE_LLC; | |
4681 | } else | |
4682 | obj->cache_level = I915_CACHE_NONE; | |
4683 | ||
d861e338 DV |
4684 | trace_i915_gem_object_create(obj); |
4685 | ||
05394f39 | 4686 | return obj; |
c397b908 DV |
4687 | } |
4688 | ||
340fbd8c CW |
4689 | static bool discard_backing_storage(struct drm_i915_gem_object *obj) |
4690 | { | |
4691 | /* If we are the last user of the backing storage (be it shmemfs | |
4692 | * pages or stolen etc), we know that the pages are going to be | |
4693 | * immediately released. In this case, we can then skip copying | |
4694 | * back the contents from the GPU. | |
4695 | */ | |
4696 | ||
4697 | if (obj->madv != I915_MADV_WILLNEED) | |
4698 | return false; | |
4699 | ||
4700 | if (obj->base.filp == NULL) | |
4701 | return true; | |
4702 | ||
4703 | /* At first glance, this looks racy, but then again so would be | |
4704 | * userspace racing mmap against close. However, the first external | |
4705 | * reference to the filp can only be obtained through the | |
4706 | * i915_gem_mmap_ioctl() which safeguards us against the user | |
4707 | * acquiring such a reference whilst we are in the middle of | |
4708 | * freeing the object. | |
4709 | */ | |
4710 | return atomic_long_read(&obj->base.filp->f_count) == 1; | |
4711 | } | |
4712 | ||
1488fc08 | 4713 | void i915_gem_free_object(struct drm_gem_object *gem_obj) |
673a394b | 4714 | { |
1488fc08 | 4715 | struct drm_i915_gem_object *obj = to_intel_bo(gem_obj); |
05394f39 | 4716 | struct drm_device *dev = obj->base.dev; |
3e31c6c0 | 4717 | struct drm_i915_private *dev_priv = dev->dev_private; |
07fe0b12 | 4718 | struct i915_vma *vma, *next; |
673a394b | 4719 | |
f65c9168 PZ |
4720 | intel_runtime_pm_get(dev_priv); |
4721 | ||
26e12f89 CW |
4722 | trace_i915_gem_object_destroy(obj); |
4723 | ||
07fe0b12 | 4724 | list_for_each_entry_safe(vma, next, &obj->vma_list, vma_link) { |
d7f46fc4 BW |
4725 | int ret; |
4726 | ||
4727 | vma->pin_count = 0; | |
4728 | ret = i915_vma_unbind(vma); | |
07fe0b12 BW |
4729 | if (WARN_ON(ret == -ERESTARTSYS)) { |
4730 | bool was_interruptible; | |
1488fc08 | 4731 | |
07fe0b12 BW |
4732 | was_interruptible = dev_priv->mm.interruptible; |
4733 | dev_priv->mm.interruptible = false; | |
1488fc08 | 4734 | |
07fe0b12 | 4735 | WARN_ON(i915_vma_unbind(vma)); |
1488fc08 | 4736 | |
07fe0b12 BW |
4737 | dev_priv->mm.interruptible = was_interruptible; |
4738 | } | |
1488fc08 CW |
4739 | } |
4740 | ||
1d64ae71 BW |
4741 | /* Stolen objects don't hold a ref, but do hold pin count. Fix that up |
4742 | * before progressing. */ | |
4743 | if (obj->stolen) | |
4744 | i915_gem_object_unpin_pages(obj); | |
4745 | ||
a071fa00 DV |
4746 | WARN_ON(obj->frontbuffer_bits); |
4747 | ||
656bfa3a DV |
4748 | if (obj->pages && obj->madv == I915_MADV_WILLNEED && |
4749 | dev_priv->quirks & QUIRK_PIN_SWIZZLED_PAGES && | |
4750 | obj->tiling_mode != I915_TILING_NONE) | |
4751 | i915_gem_object_unpin_pages(obj); | |
4752 | ||
401c29f6 BW |
4753 | if (WARN_ON(obj->pages_pin_count)) |
4754 | obj->pages_pin_count = 0; | |
340fbd8c | 4755 | if (discard_backing_storage(obj)) |
5537252b | 4756 | obj->madv = I915_MADV_DONTNEED; |
37e680a1 | 4757 | i915_gem_object_put_pages(obj); |
d8cb5086 | 4758 | i915_gem_object_free_mmap_offset(obj); |
de151cf6 | 4759 | |
9da3da66 CW |
4760 | BUG_ON(obj->pages); |
4761 | ||
2f745ad3 CW |
4762 | if (obj->base.import_attach) |
4763 | drm_prime_gem_destroy(&obj->base, NULL); | |
de151cf6 | 4764 | |
5cc9ed4b CW |
4765 | if (obj->ops->release) |
4766 | obj->ops->release(obj); | |
4767 | ||
05394f39 CW |
4768 | drm_gem_object_release(&obj->base); |
4769 | i915_gem_info_remove_obj(dev_priv, obj->base.size); | |
c397b908 | 4770 | |
05394f39 | 4771 | kfree(obj->bit_17); |
42dcedd4 | 4772 | i915_gem_object_free(obj); |
f65c9168 PZ |
4773 | |
4774 | intel_runtime_pm_put(dev_priv); | |
673a394b EA |
4775 | } |
4776 | ||
ec7adb6e JL |
4777 | struct i915_vma *i915_gem_obj_to_vma(struct drm_i915_gem_object *obj, |
4778 | struct i915_address_space *vm) | |
e656a6cb DV |
4779 | { |
4780 | struct i915_vma *vma; | |
ec7adb6e JL |
4781 | list_for_each_entry(vma, &obj->vma_list, vma_link) { |
4782 | if (i915_is_ggtt(vma->vm) && | |
4783 | vma->ggtt_view.type != I915_GGTT_VIEW_NORMAL) | |
4784 | continue; | |
4785 | if (vma->vm == vm) | |
e656a6cb | 4786 | return vma; |
ec7adb6e JL |
4787 | } |
4788 | return NULL; | |
4789 | } | |
4790 | ||
4791 | struct i915_vma *i915_gem_obj_to_ggtt_view(struct drm_i915_gem_object *obj, | |
4792 | const struct i915_ggtt_view *view) | |
4793 | { | |
4794 | struct i915_address_space *ggtt = i915_obj_to_ggtt(obj); | |
4795 | struct i915_vma *vma; | |
e656a6cb | 4796 | |
ec7adb6e JL |
4797 | if (WARN_ONCE(!view, "no view specified")) |
4798 | return ERR_PTR(-EINVAL); | |
4799 | ||
4800 | list_for_each_entry(vma, &obj->vma_list, vma_link) | |
9abc4648 JL |
4801 | if (vma->vm == ggtt && |
4802 | i915_ggtt_view_equal(&vma->ggtt_view, view)) | |
ec7adb6e | 4803 | return vma; |
e656a6cb DV |
4804 | return NULL; |
4805 | } | |
4806 | ||
2f633156 BW |
4807 | void i915_gem_vma_destroy(struct i915_vma *vma) |
4808 | { | |
b9d06dd9 | 4809 | struct i915_address_space *vm = NULL; |
2f633156 | 4810 | WARN_ON(vma->node.allocated); |
aaa05667 CW |
4811 | |
4812 | /* Keep the vma as a placeholder in the execbuffer reservation lists */ | |
4813 | if (!list_empty(&vma->exec_list)) | |
4814 | return; | |
4815 | ||
b9d06dd9 | 4816 | vm = vma->vm; |
b9d06dd9 | 4817 | |
841cd773 DV |
4818 | if (!i915_is_ggtt(vm)) |
4819 | i915_ppgtt_put(i915_vm_to_ppgtt(vm)); | |
b9d06dd9 | 4820 | |
8b9c2b94 | 4821 | list_del(&vma->vma_link); |
b93dab6e | 4822 | |
e20d2ab7 | 4823 | kmem_cache_free(to_i915(vma->obj->base.dev)->vmas, vma); |
2f633156 BW |
4824 | } |
4825 | ||
e3efda49 CW |
4826 | static void |
4827 | i915_gem_stop_ringbuffers(struct drm_device *dev) | |
4828 | { | |
4829 | struct drm_i915_private *dev_priv = dev->dev_private; | |
a4872ba6 | 4830 | struct intel_engine_cs *ring; |
e3efda49 CW |
4831 | int i; |
4832 | ||
4833 | for_each_ring(ring, dev_priv, i) | |
a83014d3 | 4834 | dev_priv->gt.stop_ring(ring); |
e3efda49 CW |
4835 | } |
4836 | ||
29105ccc | 4837 | int |
45c5f202 | 4838 | i915_gem_suspend(struct drm_device *dev) |
29105ccc | 4839 | { |
3e31c6c0 | 4840 | struct drm_i915_private *dev_priv = dev->dev_private; |
45c5f202 | 4841 | int ret = 0; |
28dfe52a | 4842 | |
45c5f202 | 4843 | mutex_lock(&dev->struct_mutex); |
b2da9fe5 | 4844 | ret = i915_gpu_idle(dev); |
f7403347 | 4845 | if (ret) |
45c5f202 | 4846 | goto err; |
f7403347 | 4847 | |
b2da9fe5 | 4848 | i915_gem_retire_requests(dev); |
673a394b | 4849 | |
e3efda49 | 4850 | i915_gem_stop_ringbuffers(dev); |
45c5f202 CW |
4851 | mutex_unlock(&dev->struct_mutex); |
4852 | ||
737b1506 | 4853 | cancel_delayed_work_sync(&dev_priv->gpu_error.hangcheck_work); |
29105ccc | 4854 | cancel_delayed_work_sync(&dev_priv->mm.retire_work); |
274fa1c1 | 4855 | flush_delayed_work(&dev_priv->mm.idle_work); |
29105ccc | 4856 | |
bdcf120b CW |
4857 | /* Assert that we sucessfully flushed all the work and |
4858 | * reset the GPU back to its idle, low power state. | |
4859 | */ | |
4860 | WARN_ON(dev_priv->mm.busy); | |
4861 | ||
673a394b | 4862 | return 0; |
45c5f202 CW |
4863 | |
4864 | err: | |
4865 | mutex_unlock(&dev->struct_mutex); | |
4866 | return ret; | |
673a394b EA |
4867 | } |
4868 | ||
6909a666 | 4869 | int i915_gem_l3_remap(struct drm_i915_gem_request *req, int slice) |
b9524a1e | 4870 | { |
6909a666 | 4871 | struct intel_engine_cs *ring = req->ring; |
c3787e2e | 4872 | struct drm_device *dev = ring->dev; |
3e31c6c0 | 4873 | struct drm_i915_private *dev_priv = dev->dev_private; |
35a85ac6 BW |
4874 | u32 reg_base = GEN7_L3LOG_BASE + (slice * 0x200); |
4875 | u32 *remap_info = dev_priv->l3_parity.remap_info[slice]; | |
c3787e2e | 4876 | int i, ret; |
b9524a1e | 4877 | |
040d2baa | 4878 | if (!HAS_L3_DPF(dev) || !remap_info) |
c3787e2e | 4879 | return 0; |
b9524a1e | 4880 | |
5fb9de1a | 4881 | ret = intel_ring_begin(req, GEN7_L3LOG_SIZE / 4 * 3); |
c3787e2e BW |
4882 | if (ret) |
4883 | return ret; | |
b9524a1e | 4884 | |
c3787e2e BW |
4885 | /* |
4886 | * Note: We do not worry about the concurrent register cacheline hang | |
4887 | * here because no other code should access these registers other than | |
4888 | * at initialization time. | |
4889 | */ | |
b9524a1e | 4890 | for (i = 0; i < GEN7_L3LOG_SIZE; i += 4) { |
c3787e2e BW |
4891 | intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1)); |
4892 | intel_ring_emit(ring, reg_base + i); | |
4893 | intel_ring_emit(ring, remap_info[i/4]); | |
b9524a1e BW |
4894 | } |
4895 | ||
c3787e2e | 4896 | intel_ring_advance(ring); |
b9524a1e | 4897 | |
c3787e2e | 4898 | return ret; |
b9524a1e BW |
4899 | } |
4900 | ||
f691e2f4 DV |
4901 | void i915_gem_init_swizzling(struct drm_device *dev) |
4902 | { | |
3e31c6c0 | 4903 | struct drm_i915_private *dev_priv = dev->dev_private; |
f691e2f4 | 4904 | |
11782b02 | 4905 | if (INTEL_INFO(dev)->gen < 5 || |
f691e2f4 DV |
4906 | dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_NONE) |
4907 | return; | |
4908 | ||
4909 | I915_WRITE(DISP_ARB_CTL, I915_READ(DISP_ARB_CTL) | | |
4910 | DISP_TILE_SURFACE_SWIZZLING); | |
4911 | ||
11782b02 DV |
4912 | if (IS_GEN5(dev)) |
4913 | return; | |
4914 | ||
f691e2f4 DV |
4915 | I915_WRITE(TILECTL, I915_READ(TILECTL) | TILECTL_SWZCTL); |
4916 | if (IS_GEN6(dev)) | |
6b26c86d | 4917 | I915_WRITE(ARB_MODE, _MASKED_BIT_ENABLE(ARB_MODE_SWIZZLE_SNB)); |
8782e26c | 4918 | else if (IS_GEN7(dev)) |
6b26c86d | 4919 | I915_WRITE(ARB_MODE, _MASKED_BIT_ENABLE(ARB_MODE_SWIZZLE_IVB)); |
31a5336e BW |
4920 | else if (IS_GEN8(dev)) |
4921 | I915_WRITE(GAMTARBMODE, _MASKED_BIT_ENABLE(ARB_MODE_SWIZZLE_BDW)); | |
8782e26c BW |
4922 | else |
4923 | BUG(); | |
f691e2f4 | 4924 | } |
e21af88d | 4925 | |
67b1b571 CW |
4926 | static bool |
4927 | intel_enable_blt(struct drm_device *dev) | |
4928 | { | |
4929 | if (!HAS_BLT(dev)) | |
4930 | return false; | |
4931 | ||
4932 | /* The blitter was dysfunctional on early prototypes */ | |
4933 | if (IS_GEN6(dev) && dev->pdev->revision < 8) { | |
4934 | DRM_INFO("BLT not supported on this pre-production hardware;" | |
4935 | " graphics performance will be degraded.\n"); | |
4936 | return false; | |
4937 | } | |
4938 | ||
4939 | return true; | |
4940 | } | |
4941 | ||
81e7f200 VS |
4942 | static void init_unused_ring(struct drm_device *dev, u32 base) |
4943 | { | |
4944 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4945 | ||
4946 | I915_WRITE(RING_CTL(base), 0); | |
4947 | I915_WRITE(RING_HEAD(base), 0); | |
4948 | I915_WRITE(RING_TAIL(base), 0); | |
4949 | I915_WRITE(RING_START(base), 0); | |
4950 | } | |
4951 | ||
4952 | static void init_unused_rings(struct drm_device *dev) | |
4953 | { | |
4954 | if (IS_I830(dev)) { | |
4955 | init_unused_ring(dev, PRB1_BASE); | |
4956 | init_unused_ring(dev, SRB0_BASE); | |
4957 | init_unused_ring(dev, SRB1_BASE); | |
4958 | init_unused_ring(dev, SRB2_BASE); | |
4959 | init_unused_ring(dev, SRB3_BASE); | |
4960 | } else if (IS_GEN2(dev)) { | |
4961 | init_unused_ring(dev, SRB0_BASE); | |
4962 | init_unused_ring(dev, SRB1_BASE); | |
4963 | } else if (IS_GEN3(dev)) { | |
4964 | init_unused_ring(dev, PRB1_BASE); | |
4965 | init_unused_ring(dev, PRB2_BASE); | |
4966 | } | |
4967 | } | |
4968 | ||
a83014d3 | 4969 | int i915_gem_init_rings(struct drm_device *dev) |
8187a2b7 | 4970 | { |
4fc7c971 | 4971 | struct drm_i915_private *dev_priv = dev->dev_private; |
8187a2b7 | 4972 | int ret; |
68f95ba9 | 4973 | |
5c1143bb | 4974 | ret = intel_init_render_ring_buffer(dev); |
68f95ba9 | 4975 | if (ret) |
b6913e4b | 4976 | return ret; |
68f95ba9 CW |
4977 | |
4978 | if (HAS_BSD(dev)) { | |
5c1143bb | 4979 | ret = intel_init_bsd_ring_buffer(dev); |
68f95ba9 CW |
4980 | if (ret) |
4981 | goto cleanup_render_ring; | |
d1b851fc | 4982 | } |
68f95ba9 | 4983 | |
67b1b571 | 4984 | if (intel_enable_blt(dev)) { |
549f7365 CW |
4985 | ret = intel_init_blt_ring_buffer(dev); |
4986 | if (ret) | |
4987 | goto cleanup_bsd_ring; | |
4988 | } | |
4989 | ||
9a8a2213 BW |
4990 | if (HAS_VEBOX(dev)) { |
4991 | ret = intel_init_vebox_ring_buffer(dev); | |
4992 | if (ret) | |
4993 | goto cleanup_blt_ring; | |
4994 | } | |
4995 | ||
845f74a7 ZY |
4996 | if (HAS_BSD2(dev)) { |
4997 | ret = intel_init_bsd2_ring_buffer(dev); | |
4998 | if (ret) | |
4999 | goto cleanup_vebox_ring; | |
5000 | } | |
9a8a2213 | 5001 | |
99433931 | 5002 | ret = i915_gem_set_seqno(dev, ((u32)~0 - 0x1000)); |
4fc7c971 | 5003 | if (ret) |
845f74a7 | 5004 | goto cleanup_bsd2_ring; |
4fc7c971 BW |
5005 | |
5006 | return 0; | |
5007 | ||
845f74a7 ZY |
5008 | cleanup_bsd2_ring: |
5009 | intel_cleanup_ring_buffer(&dev_priv->ring[VCS2]); | |
9a8a2213 BW |
5010 | cleanup_vebox_ring: |
5011 | intel_cleanup_ring_buffer(&dev_priv->ring[VECS]); | |
4fc7c971 BW |
5012 | cleanup_blt_ring: |
5013 | intel_cleanup_ring_buffer(&dev_priv->ring[BCS]); | |
5014 | cleanup_bsd_ring: | |
5015 | intel_cleanup_ring_buffer(&dev_priv->ring[VCS]); | |
5016 | cleanup_render_ring: | |
5017 | intel_cleanup_ring_buffer(&dev_priv->ring[RCS]); | |
5018 | ||
5019 | return ret; | |
5020 | } | |
5021 | ||
5022 | int | |
5023 | i915_gem_init_hw(struct drm_device *dev) | |
5024 | { | |
3e31c6c0 | 5025 | struct drm_i915_private *dev_priv = dev->dev_private; |
35a57ffb | 5026 | struct intel_engine_cs *ring; |
4ad2fd88 | 5027 | int ret, i, j; |
4fc7c971 BW |
5028 | |
5029 | if (INTEL_INFO(dev)->gen < 6 && !intel_enable_gtt()) | |
5030 | return -EIO; | |
5031 | ||
5e4f5189 CW |
5032 | /* Double layer security blanket, see i915_gem_init() */ |
5033 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); | |
5034 | ||
59124506 | 5035 | if (dev_priv->ellc_size) |
05e21cc4 | 5036 | I915_WRITE(HSW_IDICR, I915_READ(HSW_IDICR) | IDIHASHMSK(0xf)); |
4fc7c971 | 5037 | |
0bf21347 VS |
5038 | if (IS_HASWELL(dev)) |
5039 | I915_WRITE(MI_PREDICATE_RESULT_2, IS_HSW_GT3(dev) ? | |
5040 | LOWER_SLICE_ENABLED : LOWER_SLICE_DISABLED); | |
9435373e | 5041 | |
88a2b2a3 | 5042 | if (HAS_PCH_NOP(dev)) { |
6ba844b0 DV |
5043 | if (IS_IVYBRIDGE(dev)) { |
5044 | u32 temp = I915_READ(GEN7_MSG_CTL); | |
5045 | temp &= ~(WAIT_FOR_PCH_FLR_ACK | WAIT_FOR_PCH_RESET_ACK); | |
5046 | I915_WRITE(GEN7_MSG_CTL, temp); | |
5047 | } else if (INTEL_INFO(dev)->gen >= 7) { | |
5048 | u32 temp = I915_READ(HSW_NDE_RSTWRN_OPT); | |
5049 | temp &= ~RESET_PCH_HANDSHAKE_ENABLE; | |
5050 | I915_WRITE(HSW_NDE_RSTWRN_OPT, temp); | |
5051 | } | |
88a2b2a3 BW |
5052 | } |
5053 | ||
4fc7c971 BW |
5054 | i915_gem_init_swizzling(dev); |
5055 | ||
d5abdfda DV |
5056 | /* |
5057 | * At least 830 can leave some of the unused rings | |
5058 | * "active" (ie. head != tail) after resume which | |
5059 | * will prevent c3 entry. Makes sure all unused rings | |
5060 | * are totally idle. | |
5061 | */ | |
5062 | init_unused_rings(dev); | |
5063 | ||
90638cc1 JH |
5064 | BUG_ON(!dev_priv->ring[RCS].default_context); |
5065 | ||
4ad2fd88 JH |
5066 | ret = i915_ppgtt_init_hw(dev); |
5067 | if (ret) { | |
5068 | DRM_ERROR("PPGTT enable HW failed %d\n", ret); | |
5069 | goto out; | |
5070 | } | |
5071 | ||
5072 | /* Need to do basic initialisation of all rings first: */ | |
35a57ffb DV |
5073 | for_each_ring(ring, dev_priv, i) { |
5074 | ret = ring->init_hw(ring); | |
5075 | if (ret) | |
5e4f5189 | 5076 | goto out; |
35a57ffb | 5077 | } |
99433931 | 5078 | |
4ad2fd88 JH |
5079 | /* Now it is safe to go back round and do everything else: */ |
5080 | for_each_ring(ring, dev_priv, i) { | |
dc4be607 JH |
5081 | struct drm_i915_gem_request *req; |
5082 | ||
90638cc1 JH |
5083 | WARN_ON(!ring->default_context); |
5084 | ||
dc4be607 JH |
5085 | ret = i915_gem_request_alloc(ring, ring->default_context, &req); |
5086 | if (ret) { | |
5087 | i915_gem_cleanup_ringbuffer(dev); | |
5088 | goto out; | |
5089 | } | |
5090 | ||
4ad2fd88 JH |
5091 | if (ring->id == RCS) { |
5092 | for (j = 0; j < NUM_L3_SLICES(dev); j++) | |
6909a666 | 5093 | i915_gem_l3_remap(req, j); |
4ad2fd88 | 5094 | } |
c3787e2e | 5095 | |
b3dd6b96 | 5096 | ret = i915_ppgtt_init_ring(req); |
4ad2fd88 JH |
5097 | if (ret && ret != -EIO) { |
5098 | DRM_ERROR("PPGTT enable ring #%d failed %d\n", i, ret); | |
dc4be607 | 5099 | i915_gem_request_cancel(req); |
4ad2fd88 JH |
5100 | i915_gem_cleanup_ringbuffer(dev); |
5101 | goto out; | |
5102 | } | |
82460d97 | 5103 | |
b3dd6b96 | 5104 | ret = i915_gem_context_enable(req); |
90638cc1 JH |
5105 | if (ret && ret != -EIO) { |
5106 | DRM_ERROR("Context enable ring #%d failed %d\n", i, ret); | |
dc4be607 | 5107 | i915_gem_request_cancel(req); |
90638cc1 JH |
5108 | i915_gem_cleanup_ringbuffer(dev); |
5109 | goto out; | |
5110 | } | |
dc4be607 | 5111 | |
75289874 | 5112 | i915_add_request_no_flush(req); |
b7c36d25 | 5113 | } |
e21af88d | 5114 | |
5e4f5189 CW |
5115 | out: |
5116 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); | |
2fa48d8d | 5117 | return ret; |
8187a2b7 ZN |
5118 | } |
5119 | ||
1070a42b CW |
5120 | int i915_gem_init(struct drm_device *dev) |
5121 | { | |
5122 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1070a42b CW |
5123 | int ret; |
5124 | ||
127f1003 OM |
5125 | i915.enable_execlists = intel_sanitize_enable_execlists(dev, |
5126 | i915.enable_execlists); | |
5127 | ||
1070a42b | 5128 | mutex_lock(&dev->struct_mutex); |
d62b4892 JB |
5129 | |
5130 | if (IS_VALLEYVIEW(dev)) { | |
5131 | /* VLVA0 (potential hack), BIOS isn't actually waking us */ | |
981a5aea ID |
5132 | I915_WRITE(VLV_GTLC_WAKE_CTRL, VLV_GTLC_ALLOWWAKEREQ); |
5133 | if (wait_for((I915_READ(VLV_GTLC_PW_STATUS) & | |
5134 | VLV_GTLC_ALLOWWAKEACK), 10)) | |
d62b4892 JB |
5135 | DRM_DEBUG_DRIVER("allow wake ack timed out\n"); |
5136 | } | |
5137 | ||
a83014d3 | 5138 | if (!i915.enable_execlists) { |
f3dc74c0 | 5139 | dev_priv->gt.execbuf_submit = i915_gem_ringbuffer_submission; |
a83014d3 OM |
5140 | dev_priv->gt.init_rings = i915_gem_init_rings; |
5141 | dev_priv->gt.cleanup_ring = intel_cleanup_ring_buffer; | |
5142 | dev_priv->gt.stop_ring = intel_stop_ring_buffer; | |
454afebd | 5143 | } else { |
f3dc74c0 | 5144 | dev_priv->gt.execbuf_submit = intel_execlists_submission; |
454afebd OM |
5145 | dev_priv->gt.init_rings = intel_logical_rings_init; |
5146 | dev_priv->gt.cleanup_ring = intel_logical_ring_cleanup; | |
5147 | dev_priv->gt.stop_ring = intel_logical_ring_stop; | |
a83014d3 OM |
5148 | } |
5149 | ||
5e4f5189 CW |
5150 | /* This is just a security blanket to placate dragons. |
5151 | * On some systems, we very sporadically observe that the first TLBs | |
5152 | * used by the CS may be stale, despite us poking the TLB reset. If | |
5153 | * we hold the forcewake during initialisation these problems | |
5154 | * just magically go away. | |
5155 | */ | |
5156 | intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL); | |
5157 | ||
6c5566a8 | 5158 | ret = i915_gem_init_userptr(dev); |
7bcc3777 JN |
5159 | if (ret) |
5160 | goto out_unlock; | |
6c5566a8 | 5161 | |
d7e5008f | 5162 | i915_gem_init_global_gtt(dev); |
d62b4892 | 5163 | |
2fa48d8d | 5164 | ret = i915_gem_context_init(dev); |
7bcc3777 JN |
5165 | if (ret) |
5166 | goto out_unlock; | |
2fa48d8d | 5167 | |
35a57ffb DV |
5168 | ret = dev_priv->gt.init_rings(dev); |
5169 | if (ret) | |
7bcc3777 | 5170 | goto out_unlock; |
2fa48d8d | 5171 | |
1070a42b | 5172 | ret = i915_gem_init_hw(dev); |
60990320 CW |
5173 | if (ret == -EIO) { |
5174 | /* Allow ring initialisation to fail by marking the GPU as | |
5175 | * wedged. But we only want to do this where the GPU is angry, | |
5176 | * for all other failure, such as an allocation failure, bail. | |
5177 | */ | |
5178 | DRM_ERROR("Failed to initialize GPU, declaring it wedged\n"); | |
5179 | atomic_set_mask(I915_WEDGED, &dev_priv->gpu_error.reset_counter); | |
5180 | ret = 0; | |
1070a42b | 5181 | } |
7bcc3777 JN |
5182 | |
5183 | out_unlock: | |
5e4f5189 | 5184 | intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL); |
60990320 | 5185 | mutex_unlock(&dev->struct_mutex); |
1070a42b | 5186 | |
60990320 | 5187 | return ret; |
1070a42b CW |
5188 | } |
5189 | ||
8187a2b7 ZN |
5190 | void |
5191 | i915_gem_cleanup_ringbuffer(struct drm_device *dev) | |
5192 | { | |
3e31c6c0 | 5193 | struct drm_i915_private *dev_priv = dev->dev_private; |
a4872ba6 | 5194 | struct intel_engine_cs *ring; |
1ec14ad3 | 5195 | int i; |
8187a2b7 | 5196 | |
b4519513 | 5197 | for_each_ring(ring, dev_priv, i) |
a83014d3 | 5198 | dev_priv->gt.cleanup_ring(ring); |
8187a2b7 ZN |
5199 | } |
5200 | ||
64193406 | 5201 | static void |
a4872ba6 | 5202 | init_ring_lists(struct intel_engine_cs *ring) |
64193406 CW |
5203 | { |
5204 | INIT_LIST_HEAD(&ring->active_list); | |
5205 | INIT_LIST_HEAD(&ring->request_list); | |
64193406 CW |
5206 | } |
5207 | ||
7e0d96bc BW |
5208 | void i915_init_vm(struct drm_i915_private *dev_priv, |
5209 | struct i915_address_space *vm) | |
fc8c067e | 5210 | { |
7e0d96bc BW |
5211 | if (!i915_is_ggtt(vm)) |
5212 | drm_mm_init(&vm->mm, vm->start, vm->total); | |
fc8c067e BW |
5213 | vm->dev = dev_priv->dev; |
5214 | INIT_LIST_HEAD(&vm->active_list); | |
5215 | INIT_LIST_HEAD(&vm->inactive_list); | |
5216 | INIT_LIST_HEAD(&vm->global_link); | |
f72d21ed | 5217 | list_add_tail(&vm->global_link, &dev_priv->vm_list); |
fc8c067e BW |
5218 | } |
5219 | ||
673a394b EA |
5220 | void |
5221 | i915_gem_load(struct drm_device *dev) | |
5222 | { | |
3e31c6c0 | 5223 | struct drm_i915_private *dev_priv = dev->dev_private; |
42dcedd4 CW |
5224 | int i; |
5225 | ||
efab6d8d | 5226 | dev_priv->objects = |
42dcedd4 CW |
5227 | kmem_cache_create("i915_gem_object", |
5228 | sizeof(struct drm_i915_gem_object), 0, | |
5229 | SLAB_HWCACHE_ALIGN, | |
5230 | NULL); | |
e20d2ab7 CW |
5231 | dev_priv->vmas = |
5232 | kmem_cache_create("i915_gem_vma", | |
5233 | sizeof(struct i915_vma), 0, | |
5234 | SLAB_HWCACHE_ALIGN, | |
5235 | NULL); | |
efab6d8d CW |
5236 | dev_priv->requests = |
5237 | kmem_cache_create("i915_gem_request", | |
5238 | sizeof(struct drm_i915_gem_request), 0, | |
5239 | SLAB_HWCACHE_ALIGN, | |
5240 | NULL); | |
673a394b | 5241 | |
fc8c067e BW |
5242 | INIT_LIST_HEAD(&dev_priv->vm_list); |
5243 | i915_init_vm(dev_priv, &dev_priv->gtt.base); | |
5244 | ||
a33afea5 | 5245 | INIT_LIST_HEAD(&dev_priv->context_list); |
6c085a72 CW |
5246 | INIT_LIST_HEAD(&dev_priv->mm.unbound_list); |
5247 | INIT_LIST_HEAD(&dev_priv->mm.bound_list); | |
a09ba7fa | 5248 | INIT_LIST_HEAD(&dev_priv->mm.fence_list); |
1ec14ad3 CW |
5249 | for (i = 0; i < I915_NUM_RINGS; i++) |
5250 | init_ring_lists(&dev_priv->ring[i]); | |
4b9de737 | 5251 | for (i = 0; i < I915_MAX_NUM_FENCES; i++) |
007cc8ac | 5252 | INIT_LIST_HEAD(&dev_priv->fence_regs[i].lru_list); |
673a394b EA |
5253 | INIT_DELAYED_WORK(&dev_priv->mm.retire_work, |
5254 | i915_gem_retire_work_handler); | |
b29c19b6 CW |
5255 | INIT_DELAYED_WORK(&dev_priv->mm.idle_work, |
5256 | i915_gem_idle_work_handler); | |
1f83fee0 | 5257 | init_waitqueue_head(&dev_priv->gpu_error.reset_queue); |
31169714 | 5258 | |
72bfa19c CW |
5259 | dev_priv->relative_constants_mode = I915_EXEC_CONSTANTS_REL_GENERAL; |
5260 | ||
42b5aeab VS |
5261 | if (INTEL_INFO(dev)->gen >= 7 && !IS_VALLEYVIEW(dev)) |
5262 | dev_priv->num_fence_regs = 32; | |
5263 | else if (INTEL_INFO(dev)->gen >= 4 || IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) | |
de151cf6 JB |
5264 | dev_priv->num_fence_regs = 16; |
5265 | else | |
5266 | dev_priv->num_fence_regs = 8; | |
5267 | ||
eb82289a YZ |
5268 | if (intel_vgpu_active(dev)) |
5269 | dev_priv->num_fence_regs = | |
5270 | I915_READ(vgtif_reg(avail_rs.fence_num)); | |
5271 | ||
b5aa8a0f | 5272 | /* Initialize fence registers to zero */ |
19b2dbde CW |
5273 | INIT_LIST_HEAD(&dev_priv->mm.fence_list); |
5274 | i915_gem_restore_fences(dev); | |
10ed13e4 | 5275 | |
673a394b | 5276 | i915_gem_detect_bit_6_swizzle(dev); |
6b95a207 | 5277 | init_waitqueue_head(&dev_priv->pending_flip_queue); |
17250b71 | 5278 | |
ce453d81 CW |
5279 | dev_priv->mm.interruptible = true; |
5280 | ||
be6a0376 | 5281 | i915_gem_shrinker_init(dev_priv); |
f99d7069 DV |
5282 | |
5283 | mutex_init(&dev_priv->fb_tracking.lock); | |
673a394b | 5284 | } |
71acb5eb | 5285 | |
f787a5f5 | 5286 | void i915_gem_release(struct drm_device *dev, struct drm_file *file) |
b962442e | 5287 | { |
f787a5f5 | 5288 | struct drm_i915_file_private *file_priv = file->driver_priv; |
b962442e EA |
5289 | |
5290 | /* Clean up our request list when the client is going away, so that | |
5291 | * later retire_requests won't dereference our soon-to-be-gone | |
5292 | * file_priv. | |
5293 | */ | |
1c25595f | 5294 | spin_lock(&file_priv->mm.lock); |
f787a5f5 CW |
5295 | while (!list_empty(&file_priv->mm.request_list)) { |
5296 | struct drm_i915_gem_request *request; | |
5297 | ||
5298 | request = list_first_entry(&file_priv->mm.request_list, | |
5299 | struct drm_i915_gem_request, | |
5300 | client_list); | |
5301 | list_del(&request->client_list); | |
5302 | request->file_priv = NULL; | |
5303 | } | |
1c25595f | 5304 | spin_unlock(&file_priv->mm.lock); |
b29c19b6 | 5305 | |
2e1b8730 | 5306 | if (!list_empty(&file_priv->rps.link)) { |
8d3afd7d | 5307 | spin_lock(&to_i915(dev)->rps.client_lock); |
2e1b8730 | 5308 | list_del(&file_priv->rps.link); |
8d3afd7d | 5309 | spin_unlock(&to_i915(dev)->rps.client_lock); |
1854d5ca | 5310 | } |
b29c19b6 CW |
5311 | } |
5312 | ||
5313 | int i915_gem_open(struct drm_device *dev, struct drm_file *file) | |
5314 | { | |
5315 | struct drm_i915_file_private *file_priv; | |
e422b888 | 5316 | int ret; |
b29c19b6 CW |
5317 | |
5318 | DRM_DEBUG_DRIVER("\n"); | |
5319 | ||
5320 | file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL); | |
5321 | if (!file_priv) | |
5322 | return -ENOMEM; | |
5323 | ||
5324 | file->driver_priv = file_priv; | |
5325 | file_priv->dev_priv = dev->dev_private; | |
ab0e7ff9 | 5326 | file_priv->file = file; |
2e1b8730 | 5327 | INIT_LIST_HEAD(&file_priv->rps.link); |
b29c19b6 CW |
5328 | |
5329 | spin_lock_init(&file_priv->mm.lock); | |
5330 | INIT_LIST_HEAD(&file_priv->mm.request_list); | |
b29c19b6 | 5331 | |
e422b888 BW |
5332 | ret = i915_gem_context_open(dev, file); |
5333 | if (ret) | |
5334 | kfree(file_priv); | |
b29c19b6 | 5335 | |
e422b888 | 5336 | return ret; |
b29c19b6 CW |
5337 | } |
5338 | ||
b680c37a DV |
5339 | /** |
5340 | * i915_gem_track_fb - update frontbuffer tracking | |
5341 | * old: current GEM buffer for the frontbuffer slots | |
5342 | * new: new GEM buffer for the frontbuffer slots | |
5343 | * frontbuffer_bits: bitmask of frontbuffer slots | |
5344 | * | |
5345 | * This updates the frontbuffer tracking bits @frontbuffer_bits by clearing them | |
5346 | * from @old and setting them in @new. Both @old and @new can be NULL. | |
5347 | */ | |
a071fa00 DV |
5348 | void i915_gem_track_fb(struct drm_i915_gem_object *old, |
5349 | struct drm_i915_gem_object *new, | |
5350 | unsigned frontbuffer_bits) | |
5351 | { | |
5352 | if (old) { | |
5353 | WARN_ON(!mutex_is_locked(&old->base.dev->struct_mutex)); | |
5354 | WARN_ON(!(old->frontbuffer_bits & frontbuffer_bits)); | |
5355 | old->frontbuffer_bits &= ~frontbuffer_bits; | |
5356 | } | |
5357 | ||
5358 | if (new) { | |
5359 | WARN_ON(!mutex_is_locked(&new->base.dev->struct_mutex)); | |
5360 | WARN_ON(new->frontbuffer_bits & frontbuffer_bits); | |
5361 | new->frontbuffer_bits |= frontbuffer_bits; | |
5362 | } | |
5363 | } | |
5364 | ||
a70a3148 | 5365 | /* All the new VM stuff */ |
ec7adb6e JL |
5366 | unsigned long |
5367 | i915_gem_obj_offset(struct drm_i915_gem_object *o, | |
5368 | struct i915_address_space *vm) | |
a70a3148 BW |
5369 | { |
5370 | struct drm_i915_private *dev_priv = o->base.dev->dev_private; | |
5371 | struct i915_vma *vma; | |
5372 | ||
896ab1a5 | 5373 | WARN_ON(vm == &dev_priv->mm.aliasing_ppgtt->base); |
a70a3148 | 5374 | |
a70a3148 | 5375 | list_for_each_entry(vma, &o->vma_list, vma_link) { |
ec7adb6e JL |
5376 | if (i915_is_ggtt(vma->vm) && |
5377 | vma->ggtt_view.type != I915_GGTT_VIEW_NORMAL) | |
5378 | continue; | |
5379 | if (vma->vm == vm) | |
a70a3148 | 5380 | return vma->node.start; |
a70a3148 | 5381 | } |
ec7adb6e | 5382 | |
f25748ea DV |
5383 | WARN(1, "%s vma for this object not found.\n", |
5384 | i915_is_ggtt(vm) ? "global" : "ppgtt"); | |
a70a3148 BW |
5385 | return -1; |
5386 | } | |
5387 | ||
ec7adb6e JL |
5388 | unsigned long |
5389 | i915_gem_obj_ggtt_offset_view(struct drm_i915_gem_object *o, | |
9abc4648 | 5390 | const struct i915_ggtt_view *view) |
a70a3148 | 5391 | { |
ec7adb6e | 5392 | struct i915_address_space *ggtt = i915_obj_to_ggtt(o); |
a70a3148 BW |
5393 | struct i915_vma *vma; |
5394 | ||
5395 | list_for_each_entry(vma, &o->vma_list, vma_link) | |
9abc4648 JL |
5396 | if (vma->vm == ggtt && |
5397 | i915_ggtt_view_equal(&vma->ggtt_view, view)) | |
ec7adb6e JL |
5398 | return vma->node.start; |
5399 | ||
5678ad73 | 5400 | WARN(1, "global vma for this object not found. (view=%u)\n", view->type); |
ec7adb6e JL |
5401 | return -1; |
5402 | } | |
5403 | ||
5404 | bool i915_gem_obj_bound(struct drm_i915_gem_object *o, | |
5405 | struct i915_address_space *vm) | |
5406 | { | |
5407 | struct i915_vma *vma; | |
5408 | ||
5409 | list_for_each_entry(vma, &o->vma_list, vma_link) { | |
5410 | if (i915_is_ggtt(vma->vm) && | |
5411 | vma->ggtt_view.type != I915_GGTT_VIEW_NORMAL) | |
5412 | continue; | |
5413 | if (vma->vm == vm && drm_mm_node_allocated(&vma->node)) | |
5414 | return true; | |
5415 | } | |
5416 | ||
5417 | return false; | |
5418 | } | |
5419 | ||
5420 | bool i915_gem_obj_ggtt_bound_view(struct drm_i915_gem_object *o, | |
9abc4648 | 5421 | const struct i915_ggtt_view *view) |
ec7adb6e JL |
5422 | { |
5423 | struct i915_address_space *ggtt = i915_obj_to_ggtt(o); | |
5424 | struct i915_vma *vma; | |
5425 | ||
5426 | list_for_each_entry(vma, &o->vma_list, vma_link) | |
5427 | if (vma->vm == ggtt && | |
9abc4648 | 5428 | i915_ggtt_view_equal(&vma->ggtt_view, view) && |
fe14d5f4 | 5429 | drm_mm_node_allocated(&vma->node)) |
a70a3148 BW |
5430 | return true; |
5431 | ||
5432 | return false; | |
5433 | } | |
5434 | ||
5435 | bool i915_gem_obj_bound_any(struct drm_i915_gem_object *o) | |
5436 | { | |
5a1d5eb0 | 5437 | struct i915_vma *vma; |
a70a3148 | 5438 | |
5a1d5eb0 CW |
5439 | list_for_each_entry(vma, &o->vma_list, vma_link) |
5440 | if (drm_mm_node_allocated(&vma->node)) | |
a70a3148 BW |
5441 | return true; |
5442 | ||
5443 | return false; | |
5444 | } | |
5445 | ||
5446 | unsigned long i915_gem_obj_size(struct drm_i915_gem_object *o, | |
5447 | struct i915_address_space *vm) | |
5448 | { | |
5449 | struct drm_i915_private *dev_priv = o->base.dev->dev_private; | |
5450 | struct i915_vma *vma; | |
5451 | ||
896ab1a5 | 5452 | WARN_ON(vm == &dev_priv->mm.aliasing_ppgtt->base); |
a70a3148 BW |
5453 | |
5454 | BUG_ON(list_empty(&o->vma_list)); | |
5455 | ||
ec7adb6e JL |
5456 | list_for_each_entry(vma, &o->vma_list, vma_link) { |
5457 | if (i915_is_ggtt(vma->vm) && | |
5458 | vma->ggtt_view.type != I915_GGTT_VIEW_NORMAL) | |
5459 | continue; | |
a70a3148 BW |
5460 | if (vma->vm == vm) |
5461 | return vma->node.size; | |
ec7adb6e | 5462 | } |
a70a3148 BW |
5463 | return 0; |
5464 | } | |
5465 | ||
ec7adb6e | 5466 | bool i915_gem_obj_is_pinned(struct drm_i915_gem_object *obj) |
5c2abbea BW |
5467 | { |
5468 | struct i915_vma *vma; | |
a6631ae1 | 5469 | list_for_each_entry(vma, &obj->vma_list, vma_link) |
ec7adb6e JL |
5470 | if (vma->pin_count > 0) |
5471 | return true; | |
a6631ae1 | 5472 | |
ec7adb6e | 5473 | return false; |
5c2abbea | 5474 | } |