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673a394b EA |
1 | /* |
2 | * Copyright © 2008 Intel Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Eric Anholt <eric@anholt.net> | |
25 | * | |
26 | */ | |
27 | ||
28 | #include "drmP.h" | |
29 | #include "drm.h" | |
30 | #include "i915_drm.h" | |
31 | #include "i915_drv.h" | |
1c5d22f7 | 32 | #include "i915_trace.h" |
652c393a | 33 | #include "intel_drv.h" |
5a0e3ad6 | 34 | #include <linux/slab.h> |
673a394b | 35 | #include <linux/swap.h> |
79e53945 | 36 | #include <linux/pci.h> |
f8f235e5 | 37 | #include <linux/intel-gtt.h> |
673a394b | 38 | |
0108a3ed | 39 | static uint32_t i915_gem_get_gtt_alignment(struct drm_gem_object *obj); |
ba3d8d74 DV |
40 | |
41 | static int i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj, | |
42 | bool pipelined); | |
e47c68e9 EA |
43 | static void i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj); |
44 | static void i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj); | |
e47c68e9 EA |
45 | static int i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, |
46 | int write); | |
47 | static int i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj, | |
48 | uint64_t offset, | |
49 | uint64_t size); | |
50 | static void i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj); | |
2cf34d7b CW |
51 | static int i915_gem_object_wait_rendering(struct drm_gem_object *obj, |
52 | bool interruptible); | |
de151cf6 JB |
53 | static int i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, |
54 | unsigned alignment); | |
de151cf6 | 55 | static void i915_gem_clear_fence_reg(struct drm_gem_object *obj); |
71acb5eb DA |
56 | static int i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj, |
57 | struct drm_i915_gem_pwrite *args, | |
58 | struct drm_file *file_priv); | |
be72615b | 59 | static void i915_gem_free_object_tail(struct drm_gem_object *obj); |
673a394b | 60 | |
31169714 CW |
61 | static LIST_HEAD(shrink_list); |
62 | static DEFINE_SPINLOCK(shrink_list_lock); | |
63 | ||
30dbf0c0 CW |
64 | int |
65 | i915_gem_check_is_wedged(struct drm_device *dev) | |
66 | { | |
67 | struct drm_i915_private *dev_priv = dev->dev_private; | |
68 | struct completion *x = &dev_priv->error_completion; | |
69 | unsigned long flags; | |
70 | int ret; | |
71 | ||
72 | if (!atomic_read(&dev_priv->mm.wedged)) | |
73 | return 0; | |
74 | ||
75 | ret = wait_for_completion_interruptible(x); | |
76 | if (ret) | |
77 | return ret; | |
78 | ||
79 | /* Success, we reset the GPU! */ | |
80 | if (!atomic_read(&dev_priv->mm.wedged)) | |
81 | return 0; | |
82 | ||
83 | /* GPU is hung, bump the completion count to account for | |
84 | * the token we just consumed so that we never hit zero and | |
85 | * end up waiting upon a subsequent completion event that | |
86 | * will never happen. | |
87 | */ | |
88 | spin_lock_irqsave(&x->wait.lock, flags); | |
89 | x->done++; | |
90 | spin_unlock_irqrestore(&x->wait.lock, flags); | |
91 | return -EIO; | |
92 | } | |
93 | ||
76c1dec1 CW |
94 | static int i915_mutex_lock_interruptible(struct drm_device *dev) |
95 | { | |
96 | struct drm_i915_private *dev_priv = dev->dev_private; | |
97 | int ret; | |
98 | ||
99 | ret = i915_gem_check_is_wedged(dev); | |
100 | if (ret) | |
101 | return ret; | |
102 | ||
103 | ret = mutex_lock_interruptible(&dev->struct_mutex); | |
104 | if (ret) | |
105 | return ret; | |
106 | ||
107 | if (atomic_read(&dev_priv->mm.wedged)) { | |
108 | mutex_unlock(&dev->struct_mutex); | |
109 | return -EAGAIN; | |
110 | } | |
111 | ||
112 | return 0; | |
113 | } | |
30dbf0c0 | 114 | |
7d1c4804 CW |
115 | static inline bool |
116 | i915_gem_object_is_inactive(struct drm_i915_gem_object *obj_priv) | |
117 | { | |
118 | return obj_priv->gtt_space && | |
119 | !obj_priv->active && | |
120 | obj_priv->pin_count == 0; | |
121 | } | |
122 | ||
79e53945 JB |
123 | int i915_gem_do_init(struct drm_device *dev, unsigned long start, |
124 | unsigned long end) | |
673a394b EA |
125 | { |
126 | drm_i915_private_t *dev_priv = dev->dev_private; | |
673a394b | 127 | |
79e53945 JB |
128 | if (start >= end || |
129 | (start & (PAGE_SIZE - 1)) != 0 || | |
130 | (end & (PAGE_SIZE - 1)) != 0) { | |
673a394b EA |
131 | return -EINVAL; |
132 | } | |
133 | ||
79e53945 JB |
134 | drm_mm_init(&dev_priv->mm.gtt_space, start, |
135 | end - start); | |
673a394b | 136 | |
79e53945 JB |
137 | dev->gtt_total = (uint32_t) (end - start); |
138 | ||
139 | return 0; | |
140 | } | |
673a394b | 141 | |
79e53945 JB |
142 | int |
143 | i915_gem_init_ioctl(struct drm_device *dev, void *data, | |
144 | struct drm_file *file_priv) | |
145 | { | |
146 | struct drm_i915_gem_init *args = data; | |
147 | int ret; | |
148 | ||
149 | mutex_lock(&dev->struct_mutex); | |
150 | ret = i915_gem_do_init(dev, args->gtt_start, args->gtt_end); | |
673a394b EA |
151 | mutex_unlock(&dev->struct_mutex); |
152 | ||
79e53945 | 153 | return ret; |
673a394b EA |
154 | } |
155 | ||
5a125c3c EA |
156 | int |
157 | i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data, | |
158 | struct drm_file *file_priv) | |
159 | { | |
5a125c3c | 160 | struct drm_i915_gem_get_aperture *args = data; |
5a125c3c EA |
161 | |
162 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
163 | return -ENODEV; | |
164 | ||
165 | args->aper_size = dev->gtt_total; | |
2678d9d6 KP |
166 | args->aper_available_size = (args->aper_size - |
167 | atomic_read(&dev->pin_memory)); | |
5a125c3c EA |
168 | |
169 | return 0; | |
170 | } | |
171 | ||
673a394b EA |
172 | |
173 | /** | |
174 | * Creates a new mm object and returns a handle to it. | |
175 | */ | |
176 | int | |
177 | i915_gem_create_ioctl(struct drm_device *dev, void *data, | |
178 | struct drm_file *file_priv) | |
179 | { | |
180 | struct drm_i915_gem_create *args = data; | |
181 | struct drm_gem_object *obj; | |
a1a2d1d3 PP |
182 | int ret; |
183 | u32 handle; | |
673a394b EA |
184 | |
185 | args->size = roundup(args->size, PAGE_SIZE); | |
186 | ||
187 | /* Allocate the new object */ | |
ac52bc56 | 188 | obj = i915_gem_alloc_object(dev, args->size); |
673a394b EA |
189 | if (obj == NULL) |
190 | return -ENOMEM; | |
191 | ||
192 | ret = drm_gem_handle_create(file_priv, obj, &handle); | |
1dfd9754 CW |
193 | if (ret) { |
194 | drm_gem_object_unreference_unlocked(obj); | |
673a394b | 195 | return ret; |
1dfd9754 | 196 | } |
673a394b | 197 | |
1dfd9754 CW |
198 | /* Sink the floating reference from kref_init(handlecount) */ |
199 | drm_gem_object_handle_unreference_unlocked(obj); | |
673a394b | 200 | |
1dfd9754 | 201 | args->handle = handle; |
673a394b EA |
202 | return 0; |
203 | } | |
204 | ||
eb01459f EA |
205 | static inline int |
206 | fast_shmem_read(struct page **pages, | |
207 | loff_t page_base, int page_offset, | |
208 | char __user *data, | |
209 | int length) | |
210 | { | |
211 | char __iomem *vaddr; | |
2bc43b5c | 212 | int unwritten; |
eb01459f EA |
213 | |
214 | vaddr = kmap_atomic(pages[page_base >> PAGE_SHIFT], KM_USER0); | |
215 | if (vaddr == NULL) | |
216 | return -ENOMEM; | |
2bc43b5c | 217 | unwritten = __copy_to_user_inatomic(data, vaddr + page_offset, length); |
eb01459f EA |
218 | kunmap_atomic(vaddr, KM_USER0); |
219 | ||
2bc43b5c FM |
220 | if (unwritten) |
221 | return -EFAULT; | |
222 | ||
223 | return 0; | |
eb01459f EA |
224 | } |
225 | ||
280b713b EA |
226 | static int i915_gem_object_needs_bit17_swizzle(struct drm_gem_object *obj) |
227 | { | |
228 | drm_i915_private_t *dev_priv = obj->dev->dev_private; | |
23010e43 | 229 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
280b713b EA |
230 | |
231 | return dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_9_10_17 && | |
232 | obj_priv->tiling_mode != I915_TILING_NONE; | |
233 | } | |
234 | ||
99a03df5 | 235 | static inline void |
40123c1f EA |
236 | slow_shmem_copy(struct page *dst_page, |
237 | int dst_offset, | |
238 | struct page *src_page, | |
239 | int src_offset, | |
240 | int length) | |
241 | { | |
242 | char *dst_vaddr, *src_vaddr; | |
243 | ||
99a03df5 CW |
244 | dst_vaddr = kmap(dst_page); |
245 | src_vaddr = kmap(src_page); | |
40123c1f EA |
246 | |
247 | memcpy(dst_vaddr + dst_offset, src_vaddr + src_offset, length); | |
248 | ||
99a03df5 CW |
249 | kunmap(src_page); |
250 | kunmap(dst_page); | |
40123c1f EA |
251 | } |
252 | ||
99a03df5 | 253 | static inline void |
280b713b EA |
254 | slow_shmem_bit17_copy(struct page *gpu_page, |
255 | int gpu_offset, | |
256 | struct page *cpu_page, | |
257 | int cpu_offset, | |
258 | int length, | |
259 | int is_read) | |
260 | { | |
261 | char *gpu_vaddr, *cpu_vaddr; | |
262 | ||
263 | /* Use the unswizzled path if this page isn't affected. */ | |
264 | if ((page_to_phys(gpu_page) & (1 << 17)) == 0) { | |
265 | if (is_read) | |
266 | return slow_shmem_copy(cpu_page, cpu_offset, | |
267 | gpu_page, gpu_offset, length); | |
268 | else | |
269 | return slow_shmem_copy(gpu_page, gpu_offset, | |
270 | cpu_page, cpu_offset, length); | |
271 | } | |
272 | ||
99a03df5 CW |
273 | gpu_vaddr = kmap(gpu_page); |
274 | cpu_vaddr = kmap(cpu_page); | |
280b713b EA |
275 | |
276 | /* Copy the data, XORing A6 with A17 (1). The user already knows he's | |
277 | * XORing with the other bits (A9 for Y, A9 and A10 for X) | |
278 | */ | |
279 | while (length > 0) { | |
280 | int cacheline_end = ALIGN(gpu_offset + 1, 64); | |
281 | int this_length = min(cacheline_end - gpu_offset, length); | |
282 | int swizzled_gpu_offset = gpu_offset ^ 64; | |
283 | ||
284 | if (is_read) { | |
285 | memcpy(cpu_vaddr + cpu_offset, | |
286 | gpu_vaddr + swizzled_gpu_offset, | |
287 | this_length); | |
288 | } else { | |
289 | memcpy(gpu_vaddr + swizzled_gpu_offset, | |
290 | cpu_vaddr + cpu_offset, | |
291 | this_length); | |
292 | } | |
293 | cpu_offset += this_length; | |
294 | gpu_offset += this_length; | |
295 | length -= this_length; | |
296 | } | |
297 | ||
99a03df5 CW |
298 | kunmap(cpu_page); |
299 | kunmap(gpu_page); | |
280b713b EA |
300 | } |
301 | ||
eb01459f EA |
302 | /** |
303 | * This is the fast shmem pread path, which attempts to copy_from_user directly | |
304 | * from the backing pages of the object to the user's address space. On a | |
305 | * fault, it fails so we can fall back to i915_gem_shmem_pwrite_slow(). | |
306 | */ | |
307 | static int | |
308 | i915_gem_shmem_pread_fast(struct drm_device *dev, struct drm_gem_object *obj, | |
309 | struct drm_i915_gem_pread *args, | |
310 | struct drm_file *file_priv) | |
311 | { | |
23010e43 | 312 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
eb01459f EA |
313 | ssize_t remain; |
314 | loff_t offset, page_base; | |
315 | char __user *user_data; | |
316 | int page_offset, page_length; | |
317 | int ret; | |
318 | ||
319 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
320 | remain = args->size; | |
321 | ||
76c1dec1 CW |
322 | ret = i915_mutex_lock_interruptible(dev); |
323 | if (ret) | |
324 | return ret; | |
eb01459f | 325 | |
4bdadb97 | 326 | ret = i915_gem_object_get_pages(obj, 0); |
eb01459f EA |
327 | if (ret != 0) |
328 | goto fail_unlock; | |
329 | ||
330 | ret = i915_gem_object_set_cpu_read_domain_range(obj, args->offset, | |
331 | args->size); | |
332 | if (ret != 0) | |
333 | goto fail_put_pages; | |
334 | ||
23010e43 | 335 | obj_priv = to_intel_bo(obj); |
eb01459f EA |
336 | offset = args->offset; |
337 | ||
338 | while (remain > 0) { | |
339 | /* Operation in this page | |
340 | * | |
341 | * page_base = page offset within aperture | |
342 | * page_offset = offset within page | |
343 | * page_length = bytes to copy for this page | |
344 | */ | |
345 | page_base = (offset & ~(PAGE_SIZE-1)); | |
346 | page_offset = offset & (PAGE_SIZE-1); | |
347 | page_length = remain; | |
348 | if ((page_offset + remain) > PAGE_SIZE) | |
349 | page_length = PAGE_SIZE - page_offset; | |
350 | ||
351 | ret = fast_shmem_read(obj_priv->pages, | |
352 | page_base, page_offset, | |
353 | user_data, page_length); | |
354 | if (ret) | |
355 | goto fail_put_pages; | |
356 | ||
357 | remain -= page_length; | |
358 | user_data += page_length; | |
359 | offset += page_length; | |
360 | } | |
361 | ||
362 | fail_put_pages: | |
363 | i915_gem_object_put_pages(obj); | |
364 | fail_unlock: | |
365 | mutex_unlock(&dev->struct_mutex); | |
366 | ||
367 | return ret; | |
368 | } | |
369 | ||
07f73f69 CW |
370 | static int |
371 | i915_gem_object_get_pages_or_evict(struct drm_gem_object *obj) | |
372 | { | |
373 | int ret; | |
374 | ||
4bdadb97 | 375 | ret = i915_gem_object_get_pages(obj, __GFP_NORETRY | __GFP_NOWARN); |
07f73f69 CW |
376 | |
377 | /* If we've insufficient memory to map in the pages, attempt | |
378 | * to make some space by throwing out some old buffers. | |
379 | */ | |
380 | if (ret == -ENOMEM) { | |
381 | struct drm_device *dev = obj->dev; | |
07f73f69 | 382 | |
0108a3ed DV |
383 | ret = i915_gem_evict_something(dev, obj->size, |
384 | i915_gem_get_gtt_alignment(obj)); | |
07f73f69 CW |
385 | if (ret) |
386 | return ret; | |
387 | ||
4bdadb97 | 388 | ret = i915_gem_object_get_pages(obj, 0); |
07f73f69 CW |
389 | } |
390 | ||
391 | return ret; | |
392 | } | |
393 | ||
eb01459f EA |
394 | /** |
395 | * This is the fallback shmem pread path, which allocates temporary storage | |
396 | * in kernel space to copy_to_user into outside of the struct_mutex, so we | |
397 | * can copy out of the object's backing pages while holding the struct mutex | |
398 | * and not take page faults. | |
399 | */ | |
400 | static int | |
401 | i915_gem_shmem_pread_slow(struct drm_device *dev, struct drm_gem_object *obj, | |
402 | struct drm_i915_gem_pread *args, | |
403 | struct drm_file *file_priv) | |
404 | { | |
23010e43 | 405 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
eb01459f EA |
406 | struct mm_struct *mm = current->mm; |
407 | struct page **user_pages; | |
408 | ssize_t remain; | |
409 | loff_t offset, pinned_pages, i; | |
410 | loff_t first_data_page, last_data_page, num_pages; | |
411 | int shmem_page_index, shmem_page_offset; | |
412 | int data_page_index, data_page_offset; | |
413 | int page_length; | |
414 | int ret; | |
415 | uint64_t data_ptr = args->data_ptr; | |
280b713b | 416 | int do_bit17_swizzling; |
eb01459f EA |
417 | |
418 | remain = args->size; | |
419 | ||
420 | /* Pin the user pages containing the data. We can't fault while | |
421 | * holding the struct mutex, yet we want to hold it while | |
422 | * dereferencing the user data. | |
423 | */ | |
424 | first_data_page = data_ptr / PAGE_SIZE; | |
425 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; | |
426 | num_pages = last_data_page - first_data_page + 1; | |
427 | ||
8e7d2b2c | 428 | user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); |
eb01459f EA |
429 | if (user_pages == NULL) |
430 | return -ENOMEM; | |
431 | ||
432 | down_read(&mm->mmap_sem); | |
433 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, | |
e5e9ecde | 434 | num_pages, 1, 0, user_pages, NULL); |
eb01459f EA |
435 | up_read(&mm->mmap_sem); |
436 | if (pinned_pages < num_pages) { | |
437 | ret = -EFAULT; | |
438 | goto fail_put_user_pages; | |
439 | } | |
440 | ||
280b713b EA |
441 | do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
442 | ||
76c1dec1 CW |
443 | ret = i915_mutex_lock_interruptible(dev); |
444 | if (ret) | |
445 | goto fail_put_user_pages; | |
eb01459f | 446 | |
07f73f69 CW |
447 | ret = i915_gem_object_get_pages_or_evict(obj); |
448 | if (ret) | |
eb01459f EA |
449 | goto fail_unlock; |
450 | ||
451 | ret = i915_gem_object_set_cpu_read_domain_range(obj, args->offset, | |
452 | args->size); | |
453 | if (ret != 0) | |
454 | goto fail_put_pages; | |
455 | ||
23010e43 | 456 | obj_priv = to_intel_bo(obj); |
eb01459f EA |
457 | offset = args->offset; |
458 | ||
459 | while (remain > 0) { | |
460 | /* Operation in this page | |
461 | * | |
462 | * shmem_page_index = page number within shmem file | |
463 | * shmem_page_offset = offset within page in shmem file | |
464 | * data_page_index = page number in get_user_pages return | |
465 | * data_page_offset = offset with data_page_index page. | |
466 | * page_length = bytes to copy for this page | |
467 | */ | |
468 | shmem_page_index = offset / PAGE_SIZE; | |
469 | shmem_page_offset = offset & ~PAGE_MASK; | |
470 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; | |
471 | data_page_offset = data_ptr & ~PAGE_MASK; | |
472 | ||
473 | page_length = remain; | |
474 | if ((shmem_page_offset + page_length) > PAGE_SIZE) | |
475 | page_length = PAGE_SIZE - shmem_page_offset; | |
476 | if ((data_page_offset + page_length) > PAGE_SIZE) | |
477 | page_length = PAGE_SIZE - data_page_offset; | |
478 | ||
280b713b | 479 | if (do_bit17_swizzling) { |
99a03df5 | 480 | slow_shmem_bit17_copy(obj_priv->pages[shmem_page_index], |
280b713b | 481 | shmem_page_offset, |
99a03df5 CW |
482 | user_pages[data_page_index], |
483 | data_page_offset, | |
484 | page_length, | |
485 | 1); | |
486 | } else { | |
487 | slow_shmem_copy(user_pages[data_page_index], | |
488 | data_page_offset, | |
489 | obj_priv->pages[shmem_page_index], | |
490 | shmem_page_offset, | |
491 | page_length); | |
280b713b | 492 | } |
eb01459f EA |
493 | |
494 | remain -= page_length; | |
495 | data_ptr += page_length; | |
496 | offset += page_length; | |
497 | } | |
498 | ||
499 | fail_put_pages: | |
500 | i915_gem_object_put_pages(obj); | |
501 | fail_unlock: | |
502 | mutex_unlock(&dev->struct_mutex); | |
503 | fail_put_user_pages: | |
504 | for (i = 0; i < pinned_pages; i++) { | |
505 | SetPageDirty(user_pages[i]); | |
506 | page_cache_release(user_pages[i]); | |
507 | } | |
8e7d2b2c | 508 | drm_free_large(user_pages); |
eb01459f EA |
509 | |
510 | return ret; | |
511 | } | |
512 | ||
673a394b EA |
513 | /** |
514 | * Reads data from the object referenced by handle. | |
515 | * | |
516 | * On error, the contents of *data are undefined. | |
517 | */ | |
518 | int | |
519 | i915_gem_pread_ioctl(struct drm_device *dev, void *data, | |
520 | struct drm_file *file_priv) | |
521 | { | |
522 | struct drm_i915_gem_pread *args = data; | |
523 | struct drm_gem_object *obj; | |
524 | struct drm_i915_gem_object *obj_priv; | |
673a394b EA |
525 | int ret; |
526 | ||
527 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
528 | if (obj == NULL) | |
bf79cb91 | 529 | return -ENOENT; |
23010e43 | 530 | obj_priv = to_intel_bo(obj); |
673a394b EA |
531 | |
532 | /* Bounds check source. | |
533 | * | |
534 | * XXX: This could use review for overflow issues... | |
535 | */ | |
536 | if (args->offset > obj->size || args->size > obj->size || | |
537 | args->offset + args->size > obj->size) { | |
bc9025bd | 538 | drm_gem_object_unreference_unlocked(obj); |
673a394b EA |
539 | return -EINVAL; |
540 | } | |
541 | ||
280b713b | 542 | if (i915_gem_object_needs_bit17_swizzle(obj)) { |
eb01459f | 543 | ret = i915_gem_shmem_pread_slow(dev, obj, args, file_priv); |
280b713b EA |
544 | } else { |
545 | ret = i915_gem_shmem_pread_fast(dev, obj, args, file_priv); | |
546 | if (ret != 0) | |
547 | ret = i915_gem_shmem_pread_slow(dev, obj, args, | |
548 | file_priv); | |
549 | } | |
673a394b | 550 | |
bc9025bd | 551 | drm_gem_object_unreference_unlocked(obj); |
673a394b | 552 | |
eb01459f | 553 | return ret; |
673a394b EA |
554 | } |
555 | ||
0839ccb8 KP |
556 | /* This is the fast write path which cannot handle |
557 | * page faults in the source data | |
9b7530cc | 558 | */ |
0839ccb8 KP |
559 | |
560 | static inline int | |
561 | fast_user_write(struct io_mapping *mapping, | |
562 | loff_t page_base, int page_offset, | |
563 | char __user *user_data, | |
564 | int length) | |
9b7530cc | 565 | { |
9b7530cc | 566 | char *vaddr_atomic; |
0839ccb8 | 567 | unsigned long unwritten; |
9b7530cc | 568 | |
fca3ec01 | 569 | vaddr_atomic = io_mapping_map_atomic_wc(mapping, page_base, KM_USER0); |
0839ccb8 KP |
570 | unwritten = __copy_from_user_inatomic_nocache(vaddr_atomic + page_offset, |
571 | user_data, length); | |
fca3ec01 | 572 | io_mapping_unmap_atomic(vaddr_atomic, KM_USER0); |
0839ccb8 KP |
573 | if (unwritten) |
574 | return -EFAULT; | |
575 | return 0; | |
576 | } | |
577 | ||
578 | /* Here's the write path which can sleep for | |
579 | * page faults | |
580 | */ | |
581 | ||
ab34c226 | 582 | static inline void |
3de09aa3 EA |
583 | slow_kernel_write(struct io_mapping *mapping, |
584 | loff_t gtt_base, int gtt_offset, | |
585 | struct page *user_page, int user_offset, | |
586 | int length) | |
0839ccb8 | 587 | { |
ab34c226 CW |
588 | char __iomem *dst_vaddr; |
589 | char *src_vaddr; | |
0839ccb8 | 590 | |
ab34c226 CW |
591 | dst_vaddr = io_mapping_map_wc(mapping, gtt_base); |
592 | src_vaddr = kmap(user_page); | |
593 | ||
594 | memcpy_toio(dst_vaddr + gtt_offset, | |
595 | src_vaddr + user_offset, | |
596 | length); | |
597 | ||
598 | kunmap(user_page); | |
599 | io_mapping_unmap(dst_vaddr); | |
9b7530cc LT |
600 | } |
601 | ||
40123c1f EA |
602 | static inline int |
603 | fast_shmem_write(struct page **pages, | |
604 | loff_t page_base, int page_offset, | |
605 | char __user *data, | |
606 | int length) | |
607 | { | |
608 | char __iomem *vaddr; | |
d0088775 | 609 | unsigned long unwritten; |
40123c1f EA |
610 | |
611 | vaddr = kmap_atomic(pages[page_base >> PAGE_SHIFT], KM_USER0); | |
612 | if (vaddr == NULL) | |
613 | return -ENOMEM; | |
d0088775 | 614 | unwritten = __copy_from_user_inatomic(vaddr + page_offset, data, length); |
40123c1f EA |
615 | kunmap_atomic(vaddr, KM_USER0); |
616 | ||
d0088775 DA |
617 | if (unwritten) |
618 | return -EFAULT; | |
40123c1f EA |
619 | return 0; |
620 | } | |
621 | ||
3de09aa3 EA |
622 | /** |
623 | * This is the fast pwrite path, where we copy the data directly from the | |
624 | * user into the GTT, uncached. | |
625 | */ | |
673a394b | 626 | static int |
3de09aa3 EA |
627 | i915_gem_gtt_pwrite_fast(struct drm_device *dev, struct drm_gem_object *obj, |
628 | struct drm_i915_gem_pwrite *args, | |
629 | struct drm_file *file_priv) | |
673a394b | 630 | { |
23010e43 | 631 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
0839ccb8 | 632 | drm_i915_private_t *dev_priv = dev->dev_private; |
673a394b | 633 | ssize_t remain; |
0839ccb8 | 634 | loff_t offset, page_base; |
673a394b | 635 | char __user *user_data; |
0839ccb8 KP |
636 | int page_offset, page_length; |
637 | int ret; | |
673a394b EA |
638 | |
639 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
640 | remain = args->size; | |
641 | if (!access_ok(VERIFY_READ, user_data, remain)) | |
642 | return -EFAULT; | |
643 | ||
76c1dec1 CW |
644 | ret = i915_mutex_lock_interruptible(dev); |
645 | if (ret) | |
646 | return ret; | |
673a394b | 647 | |
673a394b EA |
648 | ret = i915_gem_object_pin(obj, 0); |
649 | if (ret) { | |
650 | mutex_unlock(&dev->struct_mutex); | |
651 | return ret; | |
652 | } | |
2ef7eeaa | 653 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); |
673a394b EA |
654 | if (ret) |
655 | goto fail; | |
656 | ||
23010e43 | 657 | obj_priv = to_intel_bo(obj); |
673a394b | 658 | offset = obj_priv->gtt_offset + args->offset; |
673a394b EA |
659 | |
660 | while (remain > 0) { | |
661 | /* Operation in this page | |
662 | * | |
0839ccb8 KP |
663 | * page_base = page offset within aperture |
664 | * page_offset = offset within page | |
665 | * page_length = bytes to copy for this page | |
673a394b | 666 | */ |
0839ccb8 KP |
667 | page_base = (offset & ~(PAGE_SIZE-1)); |
668 | page_offset = offset & (PAGE_SIZE-1); | |
669 | page_length = remain; | |
670 | if ((page_offset + remain) > PAGE_SIZE) | |
671 | page_length = PAGE_SIZE - page_offset; | |
672 | ||
673 | ret = fast_user_write (dev_priv->mm.gtt_mapping, page_base, | |
674 | page_offset, user_data, page_length); | |
675 | ||
676 | /* If we get a fault while copying data, then (presumably) our | |
3de09aa3 EA |
677 | * source page isn't available. Return the error and we'll |
678 | * retry in the slow path. | |
0839ccb8 | 679 | */ |
3de09aa3 EA |
680 | if (ret) |
681 | goto fail; | |
673a394b | 682 | |
0839ccb8 KP |
683 | remain -= page_length; |
684 | user_data += page_length; | |
685 | offset += page_length; | |
673a394b | 686 | } |
673a394b EA |
687 | |
688 | fail: | |
689 | i915_gem_object_unpin(obj); | |
690 | mutex_unlock(&dev->struct_mutex); | |
691 | ||
692 | return ret; | |
693 | } | |
694 | ||
3de09aa3 EA |
695 | /** |
696 | * This is the fallback GTT pwrite path, which uses get_user_pages to pin | |
697 | * the memory and maps it using kmap_atomic for copying. | |
698 | * | |
699 | * This code resulted in x11perf -rgb10text consuming about 10% more CPU | |
700 | * than using i915_gem_gtt_pwrite_fast on a G45 (32-bit). | |
701 | */ | |
3043c60c | 702 | static int |
3de09aa3 EA |
703 | i915_gem_gtt_pwrite_slow(struct drm_device *dev, struct drm_gem_object *obj, |
704 | struct drm_i915_gem_pwrite *args, | |
705 | struct drm_file *file_priv) | |
673a394b | 706 | { |
23010e43 | 707 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
3de09aa3 EA |
708 | drm_i915_private_t *dev_priv = dev->dev_private; |
709 | ssize_t remain; | |
710 | loff_t gtt_page_base, offset; | |
711 | loff_t first_data_page, last_data_page, num_pages; | |
712 | loff_t pinned_pages, i; | |
713 | struct page **user_pages; | |
714 | struct mm_struct *mm = current->mm; | |
715 | int gtt_page_offset, data_page_offset, data_page_index, page_length; | |
673a394b | 716 | int ret; |
3de09aa3 EA |
717 | uint64_t data_ptr = args->data_ptr; |
718 | ||
719 | remain = args->size; | |
720 | ||
721 | /* Pin the user pages containing the data. We can't fault while | |
722 | * holding the struct mutex, and all of the pwrite implementations | |
723 | * want to hold it while dereferencing the user data. | |
724 | */ | |
725 | first_data_page = data_ptr / PAGE_SIZE; | |
726 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; | |
727 | num_pages = last_data_page - first_data_page + 1; | |
728 | ||
8e7d2b2c | 729 | user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); |
3de09aa3 EA |
730 | if (user_pages == NULL) |
731 | return -ENOMEM; | |
732 | ||
733 | down_read(&mm->mmap_sem); | |
734 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, | |
735 | num_pages, 0, 0, user_pages, NULL); | |
736 | up_read(&mm->mmap_sem); | |
737 | if (pinned_pages < num_pages) { | |
738 | ret = -EFAULT; | |
739 | goto out_unpin_pages; | |
740 | } | |
673a394b | 741 | |
76c1dec1 CW |
742 | ret = i915_mutex_lock_interruptible(dev); |
743 | if (ret) | |
744 | goto out_unpin_pages; | |
745 | ||
3de09aa3 EA |
746 | ret = i915_gem_object_pin(obj, 0); |
747 | if (ret) | |
748 | goto out_unlock; | |
749 | ||
750 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); | |
751 | if (ret) | |
752 | goto out_unpin_object; | |
753 | ||
23010e43 | 754 | obj_priv = to_intel_bo(obj); |
3de09aa3 EA |
755 | offset = obj_priv->gtt_offset + args->offset; |
756 | ||
757 | while (remain > 0) { | |
758 | /* Operation in this page | |
759 | * | |
760 | * gtt_page_base = page offset within aperture | |
761 | * gtt_page_offset = offset within page in aperture | |
762 | * data_page_index = page number in get_user_pages return | |
763 | * data_page_offset = offset with data_page_index page. | |
764 | * page_length = bytes to copy for this page | |
765 | */ | |
766 | gtt_page_base = offset & PAGE_MASK; | |
767 | gtt_page_offset = offset & ~PAGE_MASK; | |
768 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; | |
769 | data_page_offset = data_ptr & ~PAGE_MASK; | |
770 | ||
771 | page_length = remain; | |
772 | if ((gtt_page_offset + page_length) > PAGE_SIZE) | |
773 | page_length = PAGE_SIZE - gtt_page_offset; | |
774 | if ((data_page_offset + page_length) > PAGE_SIZE) | |
775 | page_length = PAGE_SIZE - data_page_offset; | |
776 | ||
ab34c226 CW |
777 | slow_kernel_write(dev_priv->mm.gtt_mapping, |
778 | gtt_page_base, gtt_page_offset, | |
779 | user_pages[data_page_index], | |
780 | data_page_offset, | |
781 | page_length); | |
3de09aa3 EA |
782 | |
783 | remain -= page_length; | |
784 | offset += page_length; | |
785 | data_ptr += page_length; | |
786 | } | |
787 | ||
788 | out_unpin_object: | |
789 | i915_gem_object_unpin(obj); | |
790 | out_unlock: | |
791 | mutex_unlock(&dev->struct_mutex); | |
792 | out_unpin_pages: | |
793 | for (i = 0; i < pinned_pages; i++) | |
794 | page_cache_release(user_pages[i]); | |
8e7d2b2c | 795 | drm_free_large(user_pages); |
3de09aa3 EA |
796 | |
797 | return ret; | |
798 | } | |
799 | ||
40123c1f EA |
800 | /** |
801 | * This is the fast shmem pwrite path, which attempts to directly | |
802 | * copy_from_user into the kmapped pages backing the object. | |
803 | */ | |
3043c60c | 804 | static int |
40123c1f EA |
805 | i915_gem_shmem_pwrite_fast(struct drm_device *dev, struct drm_gem_object *obj, |
806 | struct drm_i915_gem_pwrite *args, | |
807 | struct drm_file *file_priv) | |
673a394b | 808 | { |
23010e43 | 809 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
40123c1f EA |
810 | ssize_t remain; |
811 | loff_t offset, page_base; | |
812 | char __user *user_data; | |
813 | int page_offset, page_length; | |
673a394b | 814 | int ret; |
40123c1f EA |
815 | |
816 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
817 | remain = args->size; | |
673a394b | 818 | |
76c1dec1 CW |
819 | ret = i915_mutex_lock_interruptible(dev); |
820 | if (ret) | |
821 | return ret; | |
673a394b | 822 | |
4bdadb97 | 823 | ret = i915_gem_object_get_pages(obj, 0); |
40123c1f EA |
824 | if (ret != 0) |
825 | goto fail_unlock; | |
673a394b | 826 | |
e47c68e9 | 827 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
40123c1f EA |
828 | if (ret != 0) |
829 | goto fail_put_pages; | |
830 | ||
23010e43 | 831 | obj_priv = to_intel_bo(obj); |
40123c1f EA |
832 | offset = args->offset; |
833 | obj_priv->dirty = 1; | |
834 | ||
835 | while (remain > 0) { | |
836 | /* Operation in this page | |
837 | * | |
838 | * page_base = page offset within aperture | |
839 | * page_offset = offset within page | |
840 | * page_length = bytes to copy for this page | |
841 | */ | |
842 | page_base = (offset & ~(PAGE_SIZE-1)); | |
843 | page_offset = offset & (PAGE_SIZE-1); | |
844 | page_length = remain; | |
845 | if ((page_offset + remain) > PAGE_SIZE) | |
846 | page_length = PAGE_SIZE - page_offset; | |
847 | ||
848 | ret = fast_shmem_write(obj_priv->pages, | |
849 | page_base, page_offset, | |
850 | user_data, page_length); | |
851 | if (ret) | |
852 | goto fail_put_pages; | |
853 | ||
854 | remain -= page_length; | |
855 | user_data += page_length; | |
856 | offset += page_length; | |
857 | } | |
858 | ||
859 | fail_put_pages: | |
860 | i915_gem_object_put_pages(obj); | |
861 | fail_unlock: | |
862 | mutex_unlock(&dev->struct_mutex); | |
863 | ||
864 | return ret; | |
865 | } | |
866 | ||
867 | /** | |
868 | * This is the fallback shmem pwrite path, which uses get_user_pages to pin | |
869 | * the memory and maps it using kmap_atomic for copying. | |
870 | * | |
871 | * This avoids taking mmap_sem for faulting on the user's address while the | |
872 | * struct_mutex is held. | |
873 | */ | |
874 | static int | |
875 | i915_gem_shmem_pwrite_slow(struct drm_device *dev, struct drm_gem_object *obj, | |
876 | struct drm_i915_gem_pwrite *args, | |
877 | struct drm_file *file_priv) | |
878 | { | |
23010e43 | 879 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
40123c1f EA |
880 | struct mm_struct *mm = current->mm; |
881 | struct page **user_pages; | |
882 | ssize_t remain; | |
883 | loff_t offset, pinned_pages, i; | |
884 | loff_t first_data_page, last_data_page, num_pages; | |
885 | int shmem_page_index, shmem_page_offset; | |
886 | int data_page_index, data_page_offset; | |
887 | int page_length; | |
888 | int ret; | |
889 | uint64_t data_ptr = args->data_ptr; | |
280b713b | 890 | int do_bit17_swizzling; |
40123c1f EA |
891 | |
892 | remain = args->size; | |
893 | ||
894 | /* Pin the user pages containing the data. We can't fault while | |
895 | * holding the struct mutex, and all of the pwrite implementations | |
896 | * want to hold it while dereferencing the user data. | |
897 | */ | |
898 | first_data_page = data_ptr / PAGE_SIZE; | |
899 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; | |
900 | num_pages = last_data_page - first_data_page + 1; | |
901 | ||
8e7d2b2c | 902 | user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); |
40123c1f EA |
903 | if (user_pages == NULL) |
904 | return -ENOMEM; | |
905 | ||
906 | down_read(&mm->mmap_sem); | |
907 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, | |
908 | num_pages, 0, 0, user_pages, NULL); | |
909 | up_read(&mm->mmap_sem); | |
910 | if (pinned_pages < num_pages) { | |
911 | ret = -EFAULT; | |
912 | goto fail_put_user_pages; | |
673a394b EA |
913 | } |
914 | ||
280b713b EA |
915 | do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
916 | ||
76c1dec1 CW |
917 | ret = i915_mutex_lock_interruptible(dev); |
918 | if (ret) | |
919 | goto fail_put_user_pages; | |
40123c1f | 920 | |
07f73f69 CW |
921 | ret = i915_gem_object_get_pages_or_evict(obj); |
922 | if (ret) | |
40123c1f EA |
923 | goto fail_unlock; |
924 | ||
925 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); | |
926 | if (ret != 0) | |
927 | goto fail_put_pages; | |
928 | ||
23010e43 | 929 | obj_priv = to_intel_bo(obj); |
673a394b | 930 | offset = args->offset; |
40123c1f | 931 | obj_priv->dirty = 1; |
673a394b | 932 | |
40123c1f EA |
933 | while (remain > 0) { |
934 | /* Operation in this page | |
935 | * | |
936 | * shmem_page_index = page number within shmem file | |
937 | * shmem_page_offset = offset within page in shmem file | |
938 | * data_page_index = page number in get_user_pages return | |
939 | * data_page_offset = offset with data_page_index page. | |
940 | * page_length = bytes to copy for this page | |
941 | */ | |
942 | shmem_page_index = offset / PAGE_SIZE; | |
943 | shmem_page_offset = offset & ~PAGE_MASK; | |
944 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; | |
945 | data_page_offset = data_ptr & ~PAGE_MASK; | |
946 | ||
947 | page_length = remain; | |
948 | if ((shmem_page_offset + page_length) > PAGE_SIZE) | |
949 | page_length = PAGE_SIZE - shmem_page_offset; | |
950 | if ((data_page_offset + page_length) > PAGE_SIZE) | |
951 | page_length = PAGE_SIZE - data_page_offset; | |
952 | ||
280b713b | 953 | if (do_bit17_swizzling) { |
99a03df5 | 954 | slow_shmem_bit17_copy(obj_priv->pages[shmem_page_index], |
280b713b EA |
955 | shmem_page_offset, |
956 | user_pages[data_page_index], | |
957 | data_page_offset, | |
99a03df5 CW |
958 | page_length, |
959 | 0); | |
960 | } else { | |
961 | slow_shmem_copy(obj_priv->pages[shmem_page_index], | |
962 | shmem_page_offset, | |
963 | user_pages[data_page_index], | |
964 | data_page_offset, | |
965 | page_length); | |
280b713b | 966 | } |
40123c1f EA |
967 | |
968 | remain -= page_length; | |
969 | data_ptr += page_length; | |
970 | offset += page_length; | |
673a394b EA |
971 | } |
972 | ||
40123c1f EA |
973 | fail_put_pages: |
974 | i915_gem_object_put_pages(obj); | |
975 | fail_unlock: | |
673a394b | 976 | mutex_unlock(&dev->struct_mutex); |
40123c1f EA |
977 | fail_put_user_pages: |
978 | for (i = 0; i < pinned_pages; i++) | |
979 | page_cache_release(user_pages[i]); | |
8e7d2b2c | 980 | drm_free_large(user_pages); |
673a394b | 981 | |
40123c1f | 982 | return ret; |
673a394b EA |
983 | } |
984 | ||
985 | /** | |
986 | * Writes data to the object referenced by handle. | |
987 | * | |
988 | * On error, the contents of the buffer that were to be modified are undefined. | |
989 | */ | |
990 | int | |
991 | i915_gem_pwrite_ioctl(struct drm_device *dev, void *data, | |
992 | struct drm_file *file_priv) | |
993 | { | |
994 | struct drm_i915_gem_pwrite *args = data; | |
995 | struct drm_gem_object *obj; | |
996 | struct drm_i915_gem_object *obj_priv; | |
997 | int ret = 0; | |
998 | ||
999 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
1000 | if (obj == NULL) | |
bf79cb91 | 1001 | return -ENOENT; |
23010e43 | 1002 | obj_priv = to_intel_bo(obj); |
673a394b EA |
1003 | |
1004 | /* Bounds check destination. | |
1005 | * | |
1006 | * XXX: This could use review for overflow issues... | |
1007 | */ | |
1008 | if (args->offset > obj->size || args->size > obj->size || | |
1009 | args->offset + args->size > obj->size) { | |
bc9025bd | 1010 | drm_gem_object_unreference_unlocked(obj); |
673a394b EA |
1011 | return -EINVAL; |
1012 | } | |
1013 | ||
1014 | /* We can only do the GTT pwrite on untiled buffers, as otherwise | |
1015 | * it would end up going through the fenced access, and we'll get | |
1016 | * different detiling behavior between reading and writing. | |
1017 | * pread/pwrite currently are reading and writing from the CPU | |
1018 | * perspective, requiring manual detiling by the client. | |
1019 | */ | |
71acb5eb DA |
1020 | if (obj_priv->phys_obj) |
1021 | ret = i915_gem_phys_pwrite(dev, obj, args, file_priv); | |
1022 | else if (obj_priv->tiling_mode == I915_TILING_NONE && | |
9b8c4a0b CW |
1023 | dev->gtt_total != 0 && |
1024 | obj->write_domain != I915_GEM_DOMAIN_CPU) { | |
3de09aa3 EA |
1025 | ret = i915_gem_gtt_pwrite_fast(dev, obj, args, file_priv); |
1026 | if (ret == -EFAULT) { | |
1027 | ret = i915_gem_gtt_pwrite_slow(dev, obj, args, | |
1028 | file_priv); | |
1029 | } | |
280b713b EA |
1030 | } else if (i915_gem_object_needs_bit17_swizzle(obj)) { |
1031 | ret = i915_gem_shmem_pwrite_slow(dev, obj, args, file_priv); | |
40123c1f EA |
1032 | } else { |
1033 | ret = i915_gem_shmem_pwrite_fast(dev, obj, args, file_priv); | |
1034 | if (ret == -EFAULT) { | |
1035 | ret = i915_gem_shmem_pwrite_slow(dev, obj, args, | |
1036 | file_priv); | |
1037 | } | |
1038 | } | |
673a394b EA |
1039 | |
1040 | #if WATCH_PWRITE | |
1041 | if (ret) | |
1042 | DRM_INFO("pwrite failed %d\n", ret); | |
1043 | #endif | |
1044 | ||
bc9025bd | 1045 | drm_gem_object_unreference_unlocked(obj); |
673a394b EA |
1046 | |
1047 | return ret; | |
1048 | } | |
1049 | ||
1050 | /** | |
2ef7eeaa EA |
1051 | * Called when user space prepares to use an object with the CPU, either |
1052 | * through the mmap ioctl's mapping or a GTT mapping. | |
673a394b EA |
1053 | */ |
1054 | int | |
1055 | i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, | |
1056 | struct drm_file *file_priv) | |
1057 | { | |
a09ba7fa | 1058 | struct drm_i915_private *dev_priv = dev->dev_private; |
673a394b EA |
1059 | struct drm_i915_gem_set_domain *args = data; |
1060 | struct drm_gem_object *obj; | |
652c393a | 1061 | struct drm_i915_gem_object *obj_priv; |
2ef7eeaa EA |
1062 | uint32_t read_domains = args->read_domains; |
1063 | uint32_t write_domain = args->write_domain; | |
673a394b EA |
1064 | int ret; |
1065 | ||
1066 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1067 | return -ENODEV; | |
1068 | ||
2ef7eeaa | 1069 | /* Only handle setting domains to types used by the CPU. */ |
21d509e3 | 1070 | if (write_domain & I915_GEM_GPU_DOMAINS) |
2ef7eeaa EA |
1071 | return -EINVAL; |
1072 | ||
21d509e3 | 1073 | if (read_domains & I915_GEM_GPU_DOMAINS) |
2ef7eeaa EA |
1074 | return -EINVAL; |
1075 | ||
1076 | /* Having something in the write domain implies it's in the read | |
1077 | * domain, and only that read domain. Enforce that in the request. | |
1078 | */ | |
1079 | if (write_domain != 0 && read_domains != write_domain) | |
1080 | return -EINVAL; | |
1081 | ||
673a394b EA |
1082 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
1083 | if (obj == NULL) | |
bf79cb91 | 1084 | return -ENOENT; |
23010e43 | 1085 | obj_priv = to_intel_bo(obj); |
673a394b | 1086 | |
76c1dec1 CW |
1087 | ret = i915_mutex_lock_interruptible(dev); |
1088 | if (ret) { | |
1089 | drm_gem_object_unreference_unlocked(obj); | |
1090 | return ret; | |
1091 | } | |
652c393a JB |
1092 | |
1093 | intel_mark_busy(dev, obj); | |
1094 | ||
2ef7eeaa EA |
1095 | if (read_domains & I915_GEM_DOMAIN_GTT) { |
1096 | ret = i915_gem_object_set_to_gtt_domain(obj, write_domain != 0); | |
02354392 | 1097 | |
a09ba7fa EA |
1098 | /* Update the LRU on the fence for the CPU access that's |
1099 | * about to occur. | |
1100 | */ | |
1101 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) { | |
007cc8ac DV |
1102 | struct drm_i915_fence_reg *reg = |
1103 | &dev_priv->fence_regs[obj_priv->fence_reg]; | |
1104 | list_move_tail(®->lru_list, | |
a09ba7fa EA |
1105 | &dev_priv->mm.fence_list); |
1106 | } | |
1107 | ||
02354392 EA |
1108 | /* Silently promote "you're not bound, there was nothing to do" |
1109 | * to success, since the client was just asking us to | |
1110 | * make sure everything was done. | |
1111 | */ | |
1112 | if (ret == -EINVAL) | |
1113 | ret = 0; | |
2ef7eeaa | 1114 | } else { |
e47c68e9 | 1115 | ret = i915_gem_object_set_to_cpu_domain(obj, write_domain != 0); |
2ef7eeaa EA |
1116 | } |
1117 | ||
7d1c4804 CW |
1118 | /* Maintain LRU order of "inactive" objects */ |
1119 | if (ret == 0 && i915_gem_object_is_inactive(obj_priv)) | |
1120 | list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list); | |
1121 | ||
673a394b EA |
1122 | drm_gem_object_unreference(obj); |
1123 | mutex_unlock(&dev->struct_mutex); | |
1124 | return ret; | |
1125 | } | |
1126 | ||
1127 | /** | |
1128 | * Called when user space has done writes to this buffer | |
1129 | */ | |
1130 | int | |
1131 | i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data, | |
1132 | struct drm_file *file_priv) | |
1133 | { | |
1134 | struct drm_i915_gem_sw_finish *args = data; | |
1135 | struct drm_gem_object *obj; | |
673a394b EA |
1136 | int ret = 0; |
1137 | ||
1138 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1139 | return -ENODEV; | |
1140 | ||
673a394b | 1141 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
76c1dec1 | 1142 | if (obj == NULL) |
bf79cb91 | 1143 | return -ENOENT; |
76c1dec1 CW |
1144 | |
1145 | ret = i915_mutex_lock_interruptible(dev); | |
1146 | if (ret) { | |
1147 | drm_gem_object_unreference_unlocked(obj); | |
1148 | return ret; | |
673a394b EA |
1149 | } |
1150 | ||
673a394b | 1151 | /* Pinned buffers may be scanout, so flush the cache */ |
3d2a812a | 1152 | if (to_intel_bo(obj)->pin_count) |
e47c68e9 EA |
1153 | i915_gem_object_flush_cpu_write_domain(obj); |
1154 | ||
673a394b EA |
1155 | drm_gem_object_unreference(obj); |
1156 | mutex_unlock(&dev->struct_mutex); | |
1157 | return ret; | |
1158 | } | |
1159 | ||
1160 | /** | |
1161 | * Maps the contents of an object, returning the address it is mapped | |
1162 | * into. | |
1163 | * | |
1164 | * While the mapping holds a reference on the contents of the object, it doesn't | |
1165 | * imply a ref on the object itself. | |
1166 | */ | |
1167 | int | |
1168 | i915_gem_mmap_ioctl(struct drm_device *dev, void *data, | |
1169 | struct drm_file *file_priv) | |
1170 | { | |
1171 | struct drm_i915_gem_mmap *args = data; | |
1172 | struct drm_gem_object *obj; | |
1173 | loff_t offset; | |
1174 | unsigned long addr; | |
1175 | ||
1176 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1177 | return -ENODEV; | |
1178 | ||
1179 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
1180 | if (obj == NULL) | |
bf79cb91 | 1181 | return -ENOENT; |
673a394b EA |
1182 | |
1183 | offset = args->offset; | |
1184 | ||
1185 | down_write(¤t->mm->mmap_sem); | |
1186 | addr = do_mmap(obj->filp, 0, args->size, | |
1187 | PROT_READ | PROT_WRITE, MAP_SHARED, | |
1188 | args->offset); | |
1189 | up_write(¤t->mm->mmap_sem); | |
bc9025bd | 1190 | drm_gem_object_unreference_unlocked(obj); |
673a394b EA |
1191 | if (IS_ERR((void *)addr)) |
1192 | return addr; | |
1193 | ||
1194 | args->addr_ptr = (uint64_t) addr; | |
1195 | ||
1196 | return 0; | |
1197 | } | |
1198 | ||
de151cf6 JB |
1199 | /** |
1200 | * i915_gem_fault - fault a page into the GTT | |
1201 | * vma: VMA in question | |
1202 | * vmf: fault info | |
1203 | * | |
1204 | * The fault handler is set up by drm_gem_mmap() when a object is GTT mapped | |
1205 | * from userspace. The fault handler takes care of binding the object to | |
1206 | * the GTT (if needed), allocating and programming a fence register (again, | |
1207 | * only if needed based on whether the old reg is still valid or the object | |
1208 | * is tiled) and inserting a new PTE into the faulting process. | |
1209 | * | |
1210 | * Note that the faulting process may involve evicting existing objects | |
1211 | * from the GTT and/or fence registers to make room. So performance may | |
1212 | * suffer if the GTT working set is large or there are few fence registers | |
1213 | * left. | |
1214 | */ | |
1215 | int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
1216 | { | |
1217 | struct drm_gem_object *obj = vma->vm_private_data; | |
1218 | struct drm_device *dev = obj->dev; | |
7d1c4804 | 1219 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 1220 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
1221 | pgoff_t page_offset; |
1222 | unsigned long pfn; | |
1223 | int ret = 0; | |
0f973f27 | 1224 | bool write = !!(vmf->flags & FAULT_FLAG_WRITE); |
de151cf6 JB |
1225 | |
1226 | /* We don't use vmf->pgoff since that has the fake offset */ | |
1227 | page_offset = ((unsigned long)vmf->virtual_address - vma->vm_start) >> | |
1228 | PAGE_SHIFT; | |
1229 | ||
1230 | /* Now bind it into the GTT if needed */ | |
1231 | mutex_lock(&dev->struct_mutex); | |
1232 | if (!obj_priv->gtt_space) { | |
e67b8ce1 | 1233 | ret = i915_gem_object_bind_to_gtt(obj, 0); |
c715089f CW |
1234 | if (ret) |
1235 | goto unlock; | |
07f4f3e8 | 1236 | |
07f4f3e8 | 1237 | ret = i915_gem_object_set_to_gtt_domain(obj, write); |
c715089f CW |
1238 | if (ret) |
1239 | goto unlock; | |
de151cf6 JB |
1240 | } |
1241 | ||
1242 | /* Need a new fence register? */ | |
a09ba7fa | 1243 | if (obj_priv->tiling_mode != I915_TILING_NONE) { |
2cf34d7b | 1244 | ret = i915_gem_object_get_fence_reg(obj, true); |
c715089f CW |
1245 | if (ret) |
1246 | goto unlock; | |
d9ddcb96 | 1247 | } |
de151cf6 | 1248 | |
7d1c4804 CW |
1249 | if (i915_gem_object_is_inactive(obj_priv)) |
1250 | list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list); | |
1251 | ||
de151cf6 JB |
1252 | pfn = ((dev->agp->base + obj_priv->gtt_offset) >> PAGE_SHIFT) + |
1253 | page_offset; | |
1254 | ||
1255 | /* Finally, remap it using the new GTT offset */ | |
1256 | ret = vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, pfn); | |
c715089f | 1257 | unlock: |
de151cf6 JB |
1258 | mutex_unlock(&dev->struct_mutex); |
1259 | ||
1260 | switch (ret) { | |
c715089f CW |
1261 | case 0: |
1262 | case -ERESTARTSYS: | |
1263 | return VM_FAULT_NOPAGE; | |
de151cf6 JB |
1264 | case -ENOMEM: |
1265 | case -EAGAIN: | |
1266 | return VM_FAULT_OOM; | |
de151cf6 | 1267 | default: |
c715089f | 1268 | return VM_FAULT_SIGBUS; |
de151cf6 JB |
1269 | } |
1270 | } | |
1271 | ||
1272 | /** | |
1273 | * i915_gem_create_mmap_offset - create a fake mmap offset for an object | |
1274 | * @obj: obj in question | |
1275 | * | |
1276 | * GEM memory mapping works by handing back to userspace a fake mmap offset | |
1277 | * it can use in a subsequent mmap(2) call. The DRM core code then looks | |
1278 | * up the object based on the offset and sets up the various memory mapping | |
1279 | * structures. | |
1280 | * | |
1281 | * This routine allocates and attaches a fake offset for @obj. | |
1282 | */ | |
1283 | static int | |
1284 | i915_gem_create_mmap_offset(struct drm_gem_object *obj) | |
1285 | { | |
1286 | struct drm_device *dev = obj->dev; | |
1287 | struct drm_gem_mm *mm = dev->mm_private; | |
23010e43 | 1288 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 | 1289 | struct drm_map_list *list; |
f77d390c | 1290 | struct drm_local_map *map; |
de151cf6 JB |
1291 | int ret = 0; |
1292 | ||
1293 | /* Set the object up for mmap'ing */ | |
1294 | list = &obj->map_list; | |
9a298b2a | 1295 | list->map = kzalloc(sizeof(struct drm_map_list), GFP_KERNEL); |
de151cf6 JB |
1296 | if (!list->map) |
1297 | return -ENOMEM; | |
1298 | ||
1299 | map = list->map; | |
1300 | map->type = _DRM_GEM; | |
1301 | map->size = obj->size; | |
1302 | map->handle = obj; | |
1303 | ||
1304 | /* Get a DRM GEM mmap offset allocated... */ | |
1305 | list->file_offset_node = drm_mm_search_free(&mm->offset_manager, | |
1306 | obj->size / PAGE_SIZE, 0, 0); | |
1307 | if (!list->file_offset_node) { | |
1308 | DRM_ERROR("failed to allocate offset for bo %d\n", obj->name); | |
9e0ae534 | 1309 | ret = -ENOSPC; |
de151cf6 JB |
1310 | goto out_free_list; |
1311 | } | |
1312 | ||
1313 | list->file_offset_node = drm_mm_get_block(list->file_offset_node, | |
1314 | obj->size / PAGE_SIZE, 0); | |
1315 | if (!list->file_offset_node) { | |
1316 | ret = -ENOMEM; | |
1317 | goto out_free_list; | |
1318 | } | |
1319 | ||
1320 | list->hash.key = list->file_offset_node->start; | |
9e0ae534 CW |
1321 | ret = drm_ht_insert_item(&mm->offset_hash, &list->hash); |
1322 | if (ret) { | |
de151cf6 JB |
1323 | DRM_ERROR("failed to add to map hash\n"); |
1324 | goto out_free_mm; | |
1325 | } | |
1326 | ||
1327 | /* By now we should be all set, any drm_mmap request on the offset | |
1328 | * below will get to our mmap & fault handler */ | |
1329 | obj_priv->mmap_offset = ((uint64_t) list->hash.key) << PAGE_SHIFT; | |
1330 | ||
1331 | return 0; | |
1332 | ||
1333 | out_free_mm: | |
1334 | drm_mm_put_block(list->file_offset_node); | |
1335 | out_free_list: | |
9a298b2a | 1336 | kfree(list->map); |
de151cf6 JB |
1337 | |
1338 | return ret; | |
1339 | } | |
1340 | ||
901782b2 CW |
1341 | /** |
1342 | * i915_gem_release_mmap - remove physical page mappings | |
1343 | * @obj: obj in question | |
1344 | * | |
af901ca1 | 1345 | * Preserve the reservation of the mmapping with the DRM core code, but |
901782b2 CW |
1346 | * relinquish ownership of the pages back to the system. |
1347 | * | |
1348 | * It is vital that we remove the page mapping if we have mapped a tiled | |
1349 | * object through the GTT and then lose the fence register due to | |
1350 | * resource pressure. Similarly if the object has been moved out of the | |
1351 | * aperture, than pages mapped into userspace must be revoked. Removing the | |
1352 | * mapping will then trigger a page fault on the next user access, allowing | |
1353 | * fixup by i915_gem_fault(). | |
1354 | */ | |
d05ca301 | 1355 | void |
901782b2 CW |
1356 | i915_gem_release_mmap(struct drm_gem_object *obj) |
1357 | { | |
1358 | struct drm_device *dev = obj->dev; | |
23010e43 | 1359 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
901782b2 CW |
1360 | |
1361 | if (dev->dev_mapping) | |
1362 | unmap_mapping_range(dev->dev_mapping, | |
1363 | obj_priv->mmap_offset, obj->size, 1); | |
1364 | } | |
1365 | ||
ab00b3e5 JB |
1366 | static void |
1367 | i915_gem_free_mmap_offset(struct drm_gem_object *obj) | |
1368 | { | |
1369 | struct drm_device *dev = obj->dev; | |
23010e43 | 1370 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
ab00b3e5 JB |
1371 | struct drm_gem_mm *mm = dev->mm_private; |
1372 | struct drm_map_list *list; | |
1373 | ||
1374 | list = &obj->map_list; | |
1375 | drm_ht_remove_item(&mm->offset_hash, &list->hash); | |
1376 | ||
1377 | if (list->file_offset_node) { | |
1378 | drm_mm_put_block(list->file_offset_node); | |
1379 | list->file_offset_node = NULL; | |
1380 | } | |
1381 | ||
1382 | if (list->map) { | |
9a298b2a | 1383 | kfree(list->map); |
ab00b3e5 JB |
1384 | list->map = NULL; |
1385 | } | |
1386 | ||
1387 | obj_priv->mmap_offset = 0; | |
1388 | } | |
1389 | ||
de151cf6 JB |
1390 | /** |
1391 | * i915_gem_get_gtt_alignment - return required GTT alignment for an object | |
1392 | * @obj: object to check | |
1393 | * | |
1394 | * Return the required GTT alignment for an object, taking into account | |
1395 | * potential fence register mapping if needed. | |
1396 | */ | |
1397 | static uint32_t | |
1398 | i915_gem_get_gtt_alignment(struct drm_gem_object *obj) | |
1399 | { | |
1400 | struct drm_device *dev = obj->dev; | |
23010e43 | 1401 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
1402 | int start, i; |
1403 | ||
1404 | /* | |
1405 | * Minimum alignment is 4k (GTT page size), but might be greater | |
1406 | * if a fence register is needed for the object. | |
1407 | */ | |
a6c45cf0 | 1408 | if (INTEL_INFO(dev)->gen >= 4 || obj_priv->tiling_mode == I915_TILING_NONE) |
de151cf6 JB |
1409 | return 4096; |
1410 | ||
1411 | /* | |
1412 | * Previous chips need to be aligned to the size of the smallest | |
1413 | * fence register that can contain the object. | |
1414 | */ | |
a6c45cf0 | 1415 | if (INTEL_INFO(dev)->gen == 3) |
de151cf6 JB |
1416 | start = 1024*1024; |
1417 | else | |
1418 | start = 512*1024; | |
1419 | ||
1420 | for (i = start; i < obj->size; i <<= 1) | |
1421 | ; | |
1422 | ||
1423 | return i; | |
1424 | } | |
1425 | ||
1426 | /** | |
1427 | * i915_gem_mmap_gtt_ioctl - prepare an object for GTT mmap'ing | |
1428 | * @dev: DRM device | |
1429 | * @data: GTT mapping ioctl data | |
1430 | * @file_priv: GEM object info | |
1431 | * | |
1432 | * Simply returns the fake offset to userspace so it can mmap it. | |
1433 | * The mmap call will end up in drm_gem_mmap(), which will set things | |
1434 | * up so we can get faults in the handler above. | |
1435 | * | |
1436 | * The fault handler will take care of binding the object into the GTT | |
1437 | * (since it may have been evicted to make room for something), allocating | |
1438 | * a fence register, and mapping the appropriate aperture address into | |
1439 | * userspace. | |
1440 | */ | |
1441 | int | |
1442 | i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data, | |
1443 | struct drm_file *file_priv) | |
1444 | { | |
1445 | struct drm_i915_gem_mmap_gtt *args = data; | |
de151cf6 JB |
1446 | struct drm_gem_object *obj; |
1447 | struct drm_i915_gem_object *obj_priv; | |
1448 | int ret; | |
1449 | ||
1450 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1451 | return -ENODEV; | |
1452 | ||
1453 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
1454 | if (obj == NULL) | |
bf79cb91 | 1455 | return -ENOENT; |
de151cf6 | 1456 | |
76c1dec1 CW |
1457 | ret = i915_mutex_lock_interruptible(dev); |
1458 | if (ret) { | |
1459 | drm_gem_object_unreference_unlocked(obj); | |
1460 | return ret; | |
1461 | } | |
de151cf6 | 1462 | |
23010e43 | 1463 | obj_priv = to_intel_bo(obj); |
de151cf6 | 1464 | |
ab18282d CW |
1465 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
1466 | DRM_ERROR("Attempting to mmap a purgeable buffer\n"); | |
1467 | drm_gem_object_unreference(obj); | |
1468 | mutex_unlock(&dev->struct_mutex); | |
1469 | return -EINVAL; | |
1470 | } | |
1471 | ||
1472 | ||
de151cf6 JB |
1473 | if (!obj_priv->mmap_offset) { |
1474 | ret = i915_gem_create_mmap_offset(obj); | |
13af1062 CW |
1475 | if (ret) { |
1476 | drm_gem_object_unreference(obj); | |
1477 | mutex_unlock(&dev->struct_mutex); | |
de151cf6 | 1478 | return ret; |
13af1062 | 1479 | } |
de151cf6 JB |
1480 | } |
1481 | ||
1482 | args->offset = obj_priv->mmap_offset; | |
1483 | ||
de151cf6 JB |
1484 | /* |
1485 | * Pull it into the GTT so that we have a page list (makes the | |
1486 | * initial fault faster and any subsequent flushing possible). | |
1487 | */ | |
1488 | if (!obj_priv->agp_mem) { | |
e67b8ce1 | 1489 | ret = i915_gem_object_bind_to_gtt(obj, 0); |
de151cf6 JB |
1490 | if (ret) { |
1491 | drm_gem_object_unreference(obj); | |
1492 | mutex_unlock(&dev->struct_mutex); | |
1493 | return ret; | |
1494 | } | |
de151cf6 JB |
1495 | } |
1496 | ||
1497 | drm_gem_object_unreference(obj); | |
1498 | mutex_unlock(&dev->struct_mutex); | |
1499 | ||
1500 | return 0; | |
1501 | } | |
1502 | ||
6911a9b8 | 1503 | void |
856fa198 | 1504 | i915_gem_object_put_pages(struct drm_gem_object *obj) |
673a394b | 1505 | { |
23010e43 | 1506 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
1507 | int page_count = obj->size / PAGE_SIZE; |
1508 | int i; | |
1509 | ||
856fa198 | 1510 | BUG_ON(obj_priv->pages_refcount == 0); |
bb6baf76 | 1511 | BUG_ON(obj_priv->madv == __I915_MADV_PURGED); |
673a394b | 1512 | |
856fa198 EA |
1513 | if (--obj_priv->pages_refcount != 0) |
1514 | return; | |
673a394b | 1515 | |
280b713b EA |
1516 | if (obj_priv->tiling_mode != I915_TILING_NONE) |
1517 | i915_gem_object_save_bit_17_swizzle(obj); | |
1518 | ||
3ef94daa | 1519 | if (obj_priv->madv == I915_MADV_DONTNEED) |
13a05fd9 | 1520 | obj_priv->dirty = 0; |
3ef94daa CW |
1521 | |
1522 | for (i = 0; i < page_count; i++) { | |
3ef94daa CW |
1523 | if (obj_priv->dirty) |
1524 | set_page_dirty(obj_priv->pages[i]); | |
1525 | ||
1526 | if (obj_priv->madv == I915_MADV_WILLNEED) | |
856fa198 | 1527 | mark_page_accessed(obj_priv->pages[i]); |
3ef94daa CW |
1528 | |
1529 | page_cache_release(obj_priv->pages[i]); | |
1530 | } | |
673a394b EA |
1531 | obj_priv->dirty = 0; |
1532 | ||
8e7d2b2c | 1533 | drm_free_large(obj_priv->pages); |
856fa198 | 1534 | obj_priv->pages = NULL; |
673a394b EA |
1535 | } |
1536 | ||
a56ba56c CW |
1537 | static uint32_t |
1538 | i915_gem_next_request_seqno(struct drm_device *dev, | |
1539 | struct intel_ring_buffer *ring) | |
1540 | { | |
1541 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1542 | ||
1543 | ring->outstanding_lazy_request = true; | |
1544 | return dev_priv->next_seqno; | |
1545 | } | |
1546 | ||
673a394b | 1547 | static void |
617dbe27 | 1548 | i915_gem_object_move_to_active(struct drm_gem_object *obj, |
852835f3 | 1549 | struct intel_ring_buffer *ring) |
673a394b | 1550 | { |
a56ba56c | 1551 | struct drm_device *dev = obj->dev; |
23010e43 | 1552 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
a56ba56c | 1553 | uint32_t seqno = i915_gem_next_request_seqno(dev, ring); |
617dbe27 | 1554 | |
852835f3 ZN |
1555 | BUG_ON(ring == NULL); |
1556 | obj_priv->ring = ring; | |
673a394b EA |
1557 | |
1558 | /* Add a reference if we're newly entering the active list. */ | |
1559 | if (!obj_priv->active) { | |
1560 | drm_gem_object_reference(obj); | |
1561 | obj_priv->active = 1; | |
1562 | } | |
e35a41de | 1563 | |
673a394b | 1564 | /* Move from whatever list we were on to the tail of execution. */ |
852835f3 | 1565 | list_move_tail(&obj_priv->list, &ring->active_list); |
a56ba56c | 1566 | obj_priv->last_rendering_seqno = seqno; |
673a394b EA |
1567 | } |
1568 | ||
ce44b0ea EA |
1569 | static void |
1570 | i915_gem_object_move_to_flushing(struct drm_gem_object *obj) | |
1571 | { | |
1572 | struct drm_device *dev = obj->dev; | |
1573 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 1574 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
ce44b0ea EA |
1575 | |
1576 | BUG_ON(!obj_priv->active); | |
1577 | list_move_tail(&obj_priv->list, &dev_priv->mm.flushing_list); | |
1578 | obj_priv->last_rendering_seqno = 0; | |
1579 | } | |
673a394b | 1580 | |
963b4836 CW |
1581 | /* Immediately discard the backing storage */ |
1582 | static void | |
1583 | i915_gem_object_truncate(struct drm_gem_object *obj) | |
1584 | { | |
23010e43 | 1585 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
bb6baf76 | 1586 | struct inode *inode; |
963b4836 | 1587 | |
ae9fed6b CW |
1588 | /* Our goal here is to return as much of the memory as |
1589 | * is possible back to the system as we are called from OOM. | |
1590 | * To do this we must instruct the shmfs to drop all of its | |
1591 | * backing pages, *now*. Here we mirror the actions taken | |
1592 | * when by shmem_delete_inode() to release the backing store. | |
1593 | */ | |
bb6baf76 | 1594 | inode = obj->filp->f_path.dentry->d_inode; |
ae9fed6b CW |
1595 | truncate_inode_pages(inode->i_mapping, 0); |
1596 | if (inode->i_op->truncate_range) | |
1597 | inode->i_op->truncate_range(inode, 0, (loff_t)-1); | |
bb6baf76 CW |
1598 | |
1599 | obj_priv->madv = __I915_MADV_PURGED; | |
963b4836 CW |
1600 | } |
1601 | ||
1602 | static inline int | |
1603 | i915_gem_object_is_purgeable(struct drm_i915_gem_object *obj_priv) | |
1604 | { | |
1605 | return obj_priv->madv == I915_MADV_DONTNEED; | |
1606 | } | |
1607 | ||
673a394b EA |
1608 | static void |
1609 | i915_gem_object_move_to_inactive(struct drm_gem_object *obj) | |
1610 | { | |
1611 | struct drm_device *dev = obj->dev; | |
1612 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 1613 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
1614 | |
1615 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
1616 | if (obj_priv->pin_count != 0) | |
f13d3f73 | 1617 | list_move_tail(&obj_priv->list, &dev_priv->mm.pinned_list); |
673a394b EA |
1618 | else |
1619 | list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list); | |
1620 | ||
99fcb766 DV |
1621 | BUG_ON(!list_empty(&obj_priv->gpu_write_list)); |
1622 | ||
ce44b0ea | 1623 | obj_priv->last_rendering_seqno = 0; |
852835f3 | 1624 | obj_priv->ring = NULL; |
673a394b EA |
1625 | if (obj_priv->active) { |
1626 | obj_priv->active = 0; | |
1627 | drm_gem_object_unreference(obj); | |
1628 | } | |
1629 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
1630 | } | |
1631 | ||
9220434a | 1632 | static void |
63560396 | 1633 | i915_gem_process_flushing_list(struct drm_device *dev, |
8a1a49f9 | 1634 | uint32_t flush_domains, |
852835f3 | 1635 | struct intel_ring_buffer *ring) |
63560396 DV |
1636 | { |
1637 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1638 | struct drm_i915_gem_object *obj_priv, *next; | |
1639 | ||
1640 | list_for_each_entry_safe(obj_priv, next, | |
1641 | &dev_priv->mm.gpu_write_list, | |
1642 | gpu_write_list) { | |
a8089e84 | 1643 | struct drm_gem_object *obj = &obj_priv->base; |
63560396 | 1644 | |
2b6efaa4 CW |
1645 | if (obj->write_domain & flush_domains && |
1646 | obj_priv->ring == ring) { | |
63560396 DV |
1647 | uint32_t old_write_domain = obj->write_domain; |
1648 | ||
1649 | obj->write_domain = 0; | |
1650 | list_del_init(&obj_priv->gpu_write_list); | |
617dbe27 | 1651 | i915_gem_object_move_to_active(obj, ring); |
63560396 DV |
1652 | |
1653 | /* update the fence lru list */ | |
007cc8ac DV |
1654 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) { |
1655 | struct drm_i915_fence_reg *reg = | |
1656 | &dev_priv->fence_regs[obj_priv->fence_reg]; | |
1657 | list_move_tail(®->lru_list, | |
63560396 | 1658 | &dev_priv->mm.fence_list); |
007cc8ac | 1659 | } |
63560396 DV |
1660 | |
1661 | trace_i915_gem_object_change_domain(obj, | |
1662 | obj->read_domains, | |
1663 | old_write_domain); | |
1664 | } | |
1665 | } | |
1666 | } | |
8187a2b7 | 1667 | |
5a5a0c64 | 1668 | uint32_t |
8a1a49f9 | 1669 | i915_add_request(struct drm_device *dev, |
f787a5f5 | 1670 | struct drm_file *file, |
8dc5d147 | 1671 | struct drm_i915_gem_request *request, |
8a1a49f9 | 1672 | struct intel_ring_buffer *ring) |
673a394b EA |
1673 | { |
1674 | drm_i915_private_t *dev_priv = dev->dev_private; | |
f787a5f5 | 1675 | struct drm_i915_file_private *file_priv = NULL; |
673a394b EA |
1676 | uint32_t seqno; |
1677 | int was_empty; | |
673a394b | 1678 | |
f787a5f5 CW |
1679 | if (file != NULL) |
1680 | file_priv = file->driver_priv; | |
b962442e | 1681 | |
8dc5d147 CW |
1682 | if (request == NULL) { |
1683 | request = kzalloc(sizeof(*request), GFP_KERNEL); | |
1684 | if (request == NULL) | |
1685 | return 0; | |
1686 | } | |
673a394b | 1687 | |
f787a5f5 | 1688 | seqno = ring->add_request(dev, ring, 0); |
a56ba56c | 1689 | ring->outstanding_lazy_request = false; |
673a394b EA |
1690 | |
1691 | request->seqno = seqno; | |
852835f3 | 1692 | request->ring = ring; |
673a394b | 1693 | request->emitted_jiffies = jiffies; |
852835f3 ZN |
1694 | was_empty = list_empty(&ring->request_list); |
1695 | list_add_tail(&request->list, &ring->request_list); | |
1696 | ||
f787a5f5 | 1697 | if (file_priv) { |
1c25595f | 1698 | spin_lock(&file_priv->mm.lock); |
f787a5f5 | 1699 | request->file_priv = file_priv; |
b962442e | 1700 | list_add_tail(&request->client_list, |
f787a5f5 | 1701 | &file_priv->mm.request_list); |
1c25595f | 1702 | spin_unlock(&file_priv->mm.lock); |
b962442e | 1703 | } |
673a394b | 1704 | |
f65d9421 | 1705 | if (!dev_priv->mm.suspended) { |
b3b079db CW |
1706 | mod_timer(&dev_priv->hangcheck_timer, |
1707 | jiffies + msecs_to_jiffies(DRM_I915_HANGCHECK_PERIOD)); | |
f65d9421 | 1708 | if (was_empty) |
b3b079db CW |
1709 | queue_delayed_work(dev_priv->wq, |
1710 | &dev_priv->mm.retire_work, HZ); | |
f65d9421 | 1711 | } |
673a394b EA |
1712 | return seqno; |
1713 | } | |
1714 | ||
1715 | /** | |
1716 | * Command execution barrier | |
1717 | * | |
1718 | * Ensures that all commands in the ring are finished | |
1719 | * before signalling the CPU | |
1720 | */ | |
8a1a49f9 | 1721 | static void |
852835f3 | 1722 | i915_retire_commands(struct drm_device *dev, struct intel_ring_buffer *ring) |
673a394b | 1723 | { |
673a394b | 1724 | uint32_t flush_domains = 0; |
673a394b EA |
1725 | |
1726 | /* The sampler always gets flushed on i965 (sigh) */ | |
a6c45cf0 | 1727 | if (INTEL_INFO(dev)->gen >= 4) |
673a394b | 1728 | flush_domains |= I915_GEM_DOMAIN_SAMPLER; |
852835f3 ZN |
1729 | |
1730 | ring->flush(dev, ring, | |
1731 | I915_GEM_DOMAIN_COMMAND, flush_domains); | |
673a394b EA |
1732 | } |
1733 | ||
f787a5f5 CW |
1734 | static inline void |
1735 | i915_gem_request_remove_from_client(struct drm_i915_gem_request *request) | |
673a394b | 1736 | { |
1c25595f CW |
1737 | struct drm_i915_file_private *file_priv = request->file_priv; |
1738 | ||
1739 | if (!file_priv) | |
1740 | return; | |
1741 | ||
1742 | spin_lock(&file_priv->mm.lock); | |
1743 | list_del(&request->client_list); | |
1744 | request->file_priv = NULL; | |
1745 | spin_unlock(&file_priv->mm.lock); | |
673a394b EA |
1746 | } |
1747 | ||
dfaae392 CW |
1748 | static void i915_gem_reset_ring_lists(struct drm_i915_private *dev_priv, |
1749 | struct intel_ring_buffer *ring) | |
9375e446 | 1750 | { |
dfaae392 CW |
1751 | while (!list_empty(&ring->request_list)) { |
1752 | struct drm_i915_gem_request *request; | |
9375e446 | 1753 | |
dfaae392 CW |
1754 | request = list_first_entry(&ring->request_list, |
1755 | struct drm_i915_gem_request, | |
1756 | list); | |
1757 | ||
1758 | list_del(&request->list); | |
f787a5f5 | 1759 | i915_gem_request_remove_from_client(request); |
dfaae392 CW |
1760 | kfree(request); |
1761 | } | |
1762 | ||
1763 | while (!list_empty(&ring->active_list)) { | |
9375e446 CW |
1764 | struct drm_i915_gem_object *obj_priv; |
1765 | ||
dfaae392 | 1766 | obj_priv = list_first_entry(&ring->active_list, |
9375e446 CW |
1767 | struct drm_i915_gem_object, |
1768 | list); | |
1769 | ||
1770 | obj_priv->base.write_domain = 0; | |
dfaae392 | 1771 | list_del_init(&obj_priv->gpu_write_list); |
9375e446 CW |
1772 | i915_gem_object_move_to_inactive(&obj_priv->base); |
1773 | } | |
1774 | } | |
1775 | ||
dfaae392 | 1776 | void i915_gem_reset_lists(struct drm_device *dev) |
77f01230 CW |
1777 | { |
1778 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1779 | struct drm_i915_gem_object *obj_priv; | |
1780 | ||
dfaae392 CW |
1781 | i915_gem_reset_ring_lists(dev_priv, &dev_priv->render_ring); |
1782 | if (HAS_BSD(dev)) | |
1783 | i915_gem_reset_ring_lists(dev_priv, &dev_priv->bsd_ring); | |
1784 | ||
1785 | /* Remove anything from the flushing lists. The GPU cache is likely | |
1786 | * to be lost on reset along with the data, so simply move the | |
1787 | * lost bo to the inactive list. | |
1788 | */ | |
1789 | while (!list_empty(&dev_priv->mm.flushing_list)) { | |
1790 | obj_priv = list_first_entry(&dev_priv->mm.flushing_list, | |
1791 | struct drm_i915_gem_object, | |
1792 | list); | |
1793 | ||
1794 | obj_priv->base.write_domain = 0; | |
1795 | list_del_init(&obj_priv->gpu_write_list); | |
1796 | i915_gem_object_move_to_inactive(&obj_priv->base); | |
1797 | } | |
1798 | ||
1799 | /* Move everything out of the GPU domains to ensure we do any | |
1800 | * necessary invalidation upon reuse. | |
1801 | */ | |
77f01230 CW |
1802 | list_for_each_entry(obj_priv, |
1803 | &dev_priv->mm.inactive_list, | |
1804 | list) | |
1805 | { | |
1806 | obj_priv->base.read_domains &= ~I915_GEM_GPU_DOMAINS; | |
1807 | } | |
1808 | } | |
1809 | ||
673a394b EA |
1810 | /** |
1811 | * This function clears the request list as sequence numbers are passed. | |
1812 | */ | |
b09a1fec CW |
1813 | static void |
1814 | i915_gem_retire_requests_ring(struct drm_device *dev, | |
1815 | struct intel_ring_buffer *ring) | |
673a394b EA |
1816 | { |
1817 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1818 | uint32_t seqno; | |
1819 | ||
b84d5f0c CW |
1820 | if (!ring->status_page.page_addr || |
1821 | list_empty(&ring->request_list)) | |
6c0594a3 KW |
1822 | return; |
1823 | ||
f787a5f5 | 1824 | seqno = ring->get_seqno(dev, ring); |
852835f3 | 1825 | while (!list_empty(&ring->request_list)) { |
673a394b | 1826 | struct drm_i915_gem_request *request; |
673a394b | 1827 | |
852835f3 | 1828 | request = list_first_entry(&ring->request_list, |
673a394b EA |
1829 | struct drm_i915_gem_request, |
1830 | list); | |
673a394b | 1831 | |
dfaae392 | 1832 | if (!i915_seqno_passed(seqno, request->seqno)) |
b84d5f0c CW |
1833 | break; |
1834 | ||
1835 | trace_i915_gem_request_retire(dev, request->seqno); | |
1836 | ||
1837 | list_del(&request->list); | |
f787a5f5 | 1838 | i915_gem_request_remove_from_client(request); |
b84d5f0c CW |
1839 | kfree(request); |
1840 | } | |
1841 | ||
1842 | /* Move any buffers on the active list that are no longer referenced | |
1843 | * by the ringbuffer to the flushing/inactive lists as appropriate. | |
1844 | */ | |
1845 | while (!list_empty(&ring->active_list)) { | |
1846 | struct drm_gem_object *obj; | |
1847 | struct drm_i915_gem_object *obj_priv; | |
1848 | ||
1849 | obj_priv = list_first_entry(&ring->active_list, | |
1850 | struct drm_i915_gem_object, | |
1851 | list); | |
673a394b | 1852 | |
dfaae392 | 1853 | if (!i915_seqno_passed(seqno, obj_priv->last_rendering_seqno)) |
673a394b | 1854 | break; |
b84d5f0c CW |
1855 | |
1856 | obj = &obj_priv->base; | |
b84d5f0c CW |
1857 | if (obj->write_domain != 0) |
1858 | i915_gem_object_move_to_flushing(obj); | |
1859 | else | |
1860 | i915_gem_object_move_to_inactive(obj); | |
673a394b | 1861 | } |
9d34e5db CW |
1862 | |
1863 | if (unlikely (dev_priv->trace_irq_seqno && | |
1864 | i915_seqno_passed(dev_priv->trace_irq_seqno, seqno))) { | |
8187a2b7 | 1865 | ring->user_irq_put(dev, ring); |
9d34e5db CW |
1866 | dev_priv->trace_irq_seqno = 0; |
1867 | } | |
673a394b EA |
1868 | } |
1869 | ||
b09a1fec CW |
1870 | void |
1871 | i915_gem_retire_requests(struct drm_device *dev) | |
1872 | { | |
1873 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1874 | ||
be72615b CW |
1875 | if (!list_empty(&dev_priv->mm.deferred_free_list)) { |
1876 | struct drm_i915_gem_object *obj_priv, *tmp; | |
1877 | ||
1878 | /* We must be careful that during unbind() we do not | |
1879 | * accidentally infinitely recurse into retire requests. | |
1880 | * Currently: | |
1881 | * retire -> free -> unbind -> wait -> retire_ring | |
1882 | */ | |
1883 | list_for_each_entry_safe(obj_priv, tmp, | |
1884 | &dev_priv->mm.deferred_free_list, | |
1885 | list) | |
1886 | i915_gem_free_object_tail(&obj_priv->base); | |
1887 | } | |
1888 | ||
b09a1fec CW |
1889 | i915_gem_retire_requests_ring(dev, &dev_priv->render_ring); |
1890 | if (HAS_BSD(dev)) | |
1891 | i915_gem_retire_requests_ring(dev, &dev_priv->bsd_ring); | |
1892 | } | |
1893 | ||
75ef9da2 | 1894 | static void |
673a394b EA |
1895 | i915_gem_retire_work_handler(struct work_struct *work) |
1896 | { | |
1897 | drm_i915_private_t *dev_priv; | |
1898 | struct drm_device *dev; | |
1899 | ||
1900 | dev_priv = container_of(work, drm_i915_private_t, | |
1901 | mm.retire_work.work); | |
1902 | dev = dev_priv->dev; | |
1903 | ||
891b48cf CW |
1904 | /* Come back later if the device is busy... */ |
1905 | if (!mutex_trylock(&dev->struct_mutex)) { | |
1906 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, HZ); | |
1907 | return; | |
1908 | } | |
1909 | ||
b09a1fec | 1910 | i915_gem_retire_requests(dev); |
d1b851fc | 1911 | |
6dbe2772 | 1912 | if (!dev_priv->mm.suspended && |
d1b851fc ZN |
1913 | (!list_empty(&dev_priv->render_ring.request_list) || |
1914 | (HAS_BSD(dev) && | |
1915 | !list_empty(&dev_priv->bsd_ring.request_list)))) | |
9c9fe1f8 | 1916 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, HZ); |
673a394b EA |
1917 | mutex_unlock(&dev->struct_mutex); |
1918 | } | |
1919 | ||
5a5a0c64 | 1920 | int |
852835f3 | 1921 | i915_do_wait_request(struct drm_device *dev, uint32_t seqno, |
8a1a49f9 | 1922 | bool interruptible, struct intel_ring_buffer *ring) |
673a394b EA |
1923 | { |
1924 | drm_i915_private_t *dev_priv = dev->dev_private; | |
802c7eb6 | 1925 | u32 ier; |
673a394b EA |
1926 | int ret = 0; |
1927 | ||
1928 | BUG_ON(seqno == 0); | |
1929 | ||
30dbf0c0 CW |
1930 | if (atomic_read(&dev_priv->mm.wedged)) |
1931 | return -EAGAIN; | |
1932 | ||
a56ba56c | 1933 | if (ring->outstanding_lazy_request) { |
8dc5d147 | 1934 | seqno = i915_add_request(dev, NULL, NULL, ring); |
e35a41de DV |
1935 | if (seqno == 0) |
1936 | return -ENOMEM; | |
1937 | } | |
a56ba56c | 1938 | BUG_ON(seqno == dev_priv->next_seqno); |
e35a41de | 1939 | |
f787a5f5 | 1940 | if (!i915_seqno_passed(ring->get_seqno(dev, ring), seqno)) { |
bad720ff | 1941 | if (HAS_PCH_SPLIT(dev)) |
036a4a7d ZW |
1942 | ier = I915_READ(DEIER) | I915_READ(GTIER); |
1943 | else | |
1944 | ier = I915_READ(IER); | |
802c7eb6 JB |
1945 | if (!ier) { |
1946 | DRM_ERROR("something (likely vbetool) disabled " | |
1947 | "interrupts, re-enabling\n"); | |
1948 | i915_driver_irq_preinstall(dev); | |
1949 | i915_driver_irq_postinstall(dev); | |
1950 | } | |
1951 | ||
1c5d22f7 CW |
1952 | trace_i915_gem_request_wait_begin(dev, seqno); |
1953 | ||
852835f3 | 1954 | ring->waiting_gem_seqno = seqno; |
8187a2b7 | 1955 | ring->user_irq_get(dev, ring); |
48764bf4 | 1956 | if (interruptible) |
852835f3 ZN |
1957 | ret = wait_event_interruptible(ring->irq_queue, |
1958 | i915_seqno_passed( | |
f787a5f5 | 1959 | ring->get_seqno(dev, ring), seqno) |
852835f3 | 1960 | || atomic_read(&dev_priv->mm.wedged)); |
48764bf4 | 1961 | else |
852835f3 ZN |
1962 | wait_event(ring->irq_queue, |
1963 | i915_seqno_passed( | |
f787a5f5 | 1964 | ring->get_seqno(dev, ring), seqno) |
852835f3 | 1965 | || atomic_read(&dev_priv->mm.wedged)); |
48764bf4 | 1966 | |
8187a2b7 | 1967 | ring->user_irq_put(dev, ring); |
852835f3 | 1968 | ring->waiting_gem_seqno = 0; |
1c5d22f7 CW |
1969 | |
1970 | trace_i915_gem_request_wait_end(dev, seqno); | |
673a394b | 1971 | } |
ba1234d1 | 1972 | if (atomic_read(&dev_priv->mm.wedged)) |
30dbf0c0 | 1973 | ret = -EAGAIN; |
673a394b EA |
1974 | |
1975 | if (ret && ret != -ERESTARTSYS) | |
8bff917c | 1976 | DRM_ERROR("%s returns %d (awaiting %d at %d, next %d)\n", |
f787a5f5 | 1977 | __func__, ret, seqno, ring->get_seqno(dev, ring), |
8bff917c | 1978 | dev_priv->next_seqno); |
673a394b EA |
1979 | |
1980 | /* Directly dispatch request retiring. While we have the work queue | |
1981 | * to handle this, the waiter on a request often wants an associated | |
1982 | * buffer to have made it to the inactive list, and we would need | |
1983 | * a separate wait queue to handle that. | |
1984 | */ | |
1985 | if (ret == 0) | |
b09a1fec | 1986 | i915_gem_retire_requests_ring(dev, ring); |
673a394b EA |
1987 | |
1988 | return ret; | |
1989 | } | |
1990 | ||
48764bf4 DV |
1991 | /** |
1992 | * Waits for a sequence number to be signaled, and cleans up the | |
1993 | * request and object lists appropriately for that event. | |
1994 | */ | |
1995 | static int | |
852835f3 | 1996 | i915_wait_request(struct drm_device *dev, uint32_t seqno, |
a56ba56c | 1997 | struct intel_ring_buffer *ring) |
48764bf4 | 1998 | { |
852835f3 | 1999 | return i915_do_wait_request(dev, seqno, 1, ring); |
48764bf4 DV |
2000 | } |
2001 | ||
20f0cd55 | 2002 | static void |
9220434a | 2003 | i915_gem_flush_ring(struct drm_device *dev, |
c78ec30b | 2004 | struct drm_file *file_priv, |
9220434a CW |
2005 | struct intel_ring_buffer *ring, |
2006 | uint32_t invalidate_domains, | |
2007 | uint32_t flush_domains) | |
2008 | { | |
2009 | ring->flush(dev, ring, invalidate_domains, flush_domains); | |
2010 | i915_gem_process_flushing_list(dev, flush_domains, ring); | |
2011 | } | |
2012 | ||
8187a2b7 ZN |
2013 | static void |
2014 | i915_gem_flush(struct drm_device *dev, | |
c78ec30b | 2015 | struct drm_file *file_priv, |
8187a2b7 | 2016 | uint32_t invalidate_domains, |
9220434a CW |
2017 | uint32_t flush_domains, |
2018 | uint32_t flush_rings) | |
8187a2b7 ZN |
2019 | { |
2020 | drm_i915_private_t *dev_priv = dev->dev_private; | |
8bff917c | 2021 | |
8187a2b7 ZN |
2022 | if (flush_domains & I915_GEM_DOMAIN_CPU) |
2023 | drm_agp_chipset_flush(dev); | |
8bff917c | 2024 | |
9220434a CW |
2025 | if ((flush_domains | invalidate_domains) & I915_GEM_GPU_DOMAINS) { |
2026 | if (flush_rings & RING_RENDER) | |
c78ec30b | 2027 | i915_gem_flush_ring(dev, file_priv, |
9220434a CW |
2028 | &dev_priv->render_ring, |
2029 | invalidate_domains, flush_domains); | |
2030 | if (flush_rings & RING_BSD) | |
c78ec30b | 2031 | i915_gem_flush_ring(dev, file_priv, |
9220434a CW |
2032 | &dev_priv->bsd_ring, |
2033 | invalidate_domains, flush_domains); | |
2034 | } | |
8187a2b7 ZN |
2035 | } |
2036 | ||
673a394b EA |
2037 | /** |
2038 | * Ensures that all rendering to the object has completed and the object is | |
2039 | * safe to unbind from the GTT or access from the CPU. | |
2040 | */ | |
2041 | static int | |
2cf34d7b CW |
2042 | i915_gem_object_wait_rendering(struct drm_gem_object *obj, |
2043 | bool interruptible) | |
673a394b EA |
2044 | { |
2045 | struct drm_device *dev = obj->dev; | |
23010e43 | 2046 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
2047 | int ret; |
2048 | ||
e47c68e9 EA |
2049 | /* This function only exists to support waiting for existing rendering, |
2050 | * not for emitting required flushes. | |
673a394b | 2051 | */ |
e47c68e9 | 2052 | BUG_ON((obj->write_domain & I915_GEM_GPU_DOMAINS) != 0); |
673a394b EA |
2053 | |
2054 | /* If there is rendering queued on the buffer being evicted, wait for | |
2055 | * it. | |
2056 | */ | |
2057 | if (obj_priv->active) { | |
2cf34d7b CW |
2058 | ret = i915_do_wait_request(dev, |
2059 | obj_priv->last_rendering_seqno, | |
2060 | interruptible, | |
2061 | obj_priv->ring); | |
2062 | if (ret) | |
673a394b EA |
2063 | return ret; |
2064 | } | |
2065 | ||
2066 | return 0; | |
2067 | } | |
2068 | ||
2069 | /** | |
2070 | * Unbinds an object from the GTT aperture. | |
2071 | */ | |
0f973f27 | 2072 | int |
673a394b EA |
2073 | i915_gem_object_unbind(struct drm_gem_object *obj) |
2074 | { | |
2075 | struct drm_device *dev = obj->dev; | |
23010e43 | 2076 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
2077 | int ret = 0; |
2078 | ||
673a394b EA |
2079 | if (obj_priv->gtt_space == NULL) |
2080 | return 0; | |
2081 | ||
2082 | if (obj_priv->pin_count != 0) { | |
2083 | DRM_ERROR("Attempting to unbind pinned buffer\n"); | |
2084 | return -EINVAL; | |
2085 | } | |
2086 | ||
5323fd04 EA |
2087 | /* blow away mappings if mapped through GTT */ |
2088 | i915_gem_release_mmap(obj); | |
2089 | ||
673a394b EA |
2090 | /* Move the object to the CPU domain to ensure that |
2091 | * any possible CPU writes while it's not in the GTT | |
2092 | * are flushed when we go to remap it. This will | |
2093 | * also ensure that all pending GPU writes are finished | |
2094 | * before we unbind. | |
2095 | */ | |
e47c68e9 | 2096 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
8dc1775d | 2097 | if (ret == -ERESTARTSYS) |
673a394b | 2098 | return ret; |
8dc1775d CW |
2099 | /* Continue on if we fail due to EIO, the GPU is hung so we |
2100 | * should be safe and we need to cleanup or else we might | |
2101 | * cause memory corruption through use-after-free. | |
2102 | */ | |
673a394b | 2103 | |
96b47b65 DV |
2104 | /* release the fence reg _after_ flushing */ |
2105 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) | |
2106 | i915_gem_clear_fence_reg(obj); | |
2107 | ||
673a394b EA |
2108 | if (obj_priv->agp_mem != NULL) { |
2109 | drm_unbind_agp(obj_priv->agp_mem); | |
2110 | drm_free_agp(obj_priv->agp_mem, obj->size / PAGE_SIZE); | |
2111 | obj_priv->agp_mem = NULL; | |
2112 | } | |
2113 | ||
856fa198 | 2114 | i915_gem_object_put_pages(obj); |
a32808c0 | 2115 | BUG_ON(obj_priv->pages_refcount); |
673a394b EA |
2116 | |
2117 | if (obj_priv->gtt_space) { | |
2118 | atomic_dec(&dev->gtt_count); | |
2119 | atomic_sub(obj->size, &dev->gtt_memory); | |
2120 | ||
2121 | drm_mm_put_block(obj_priv->gtt_space); | |
2122 | obj_priv->gtt_space = NULL; | |
2123 | } | |
2124 | ||
f13d3f73 | 2125 | list_del_init(&obj_priv->list); |
673a394b | 2126 | |
963b4836 CW |
2127 | if (i915_gem_object_is_purgeable(obj_priv)) |
2128 | i915_gem_object_truncate(obj); | |
2129 | ||
1c5d22f7 CW |
2130 | trace_i915_gem_object_unbind(obj); |
2131 | ||
8dc1775d | 2132 | return ret; |
673a394b EA |
2133 | } |
2134 | ||
a56ba56c CW |
2135 | static int i915_ring_idle(struct drm_device *dev, |
2136 | struct intel_ring_buffer *ring) | |
2137 | { | |
2138 | i915_gem_flush_ring(dev, NULL, ring, | |
2139 | I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); | |
2140 | return i915_wait_request(dev, | |
2141 | i915_gem_next_request_seqno(dev, ring), | |
2142 | ring); | |
2143 | } | |
2144 | ||
b47eb4a2 | 2145 | int |
4df2faf4 DV |
2146 | i915_gpu_idle(struct drm_device *dev) |
2147 | { | |
2148 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2149 | bool lists_empty; | |
852835f3 | 2150 | int ret; |
4df2faf4 | 2151 | |
d1b851fc ZN |
2152 | lists_empty = (list_empty(&dev_priv->mm.flushing_list) && |
2153 | list_empty(&dev_priv->render_ring.active_list) && | |
2154 | (!HAS_BSD(dev) || | |
2155 | list_empty(&dev_priv->bsd_ring.active_list))); | |
4df2faf4 DV |
2156 | if (lists_empty) |
2157 | return 0; | |
2158 | ||
2159 | /* Flush everything onto the inactive list. */ | |
a56ba56c | 2160 | ret = i915_ring_idle(dev, &dev_priv->render_ring); |
8a1a49f9 DV |
2161 | if (ret) |
2162 | return ret; | |
d1b851fc ZN |
2163 | |
2164 | if (HAS_BSD(dev)) { | |
a56ba56c | 2165 | ret = i915_ring_idle(dev, &dev_priv->bsd_ring); |
d1b851fc ZN |
2166 | if (ret) |
2167 | return ret; | |
2168 | } | |
2169 | ||
8a1a49f9 | 2170 | return 0; |
4df2faf4 DV |
2171 | } |
2172 | ||
6911a9b8 | 2173 | int |
4bdadb97 CW |
2174 | i915_gem_object_get_pages(struct drm_gem_object *obj, |
2175 | gfp_t gfpmask) | |
673a394b | 2176 | { |
23010e43 | 2177 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
2178 | int page_count, i; |
2179 | struct address_space *mapping; | |
2180 | struct inode *inode; | |
2181 | struct page *page; | |
673a394b | 2182 | |
778c3544 DV |
2183 | BUG_ON(obj_priv->pages_refcount |
2184 | == DRM_I915_GEM_OBJECT_MAX_PAGES_REFCOUNT); | |
2185 | ||
856fa198 | 2186 | if (obj_priv->pages_refcount++ != 0) |
673a394b EA |
2187 | return 0; |
2188 | ||
2189 | /* Get the list of pages out of our struct file. They'll be pinned | |
2190 | * at this point until we release them. | |
2191 | */ | |
2192 | page_count = obj->size / PAGE_SIZE; | |
856fa198 | 2193 | BUG_ON(obj_priv->pages != NULL); |
8e7d2b2c | 2194 | obj_priv->pages = drm_calloc_large(page_count, sizeof(struct page *)); |
856fa198 | 2195 | if (obj_priv->pages == NULL) { |
856fa198 | 2196 | obj_priv->pages_refcount--; |
673a394b EA |
2197 | return -ENOMEM; |
2198 | } | |
2199 | ||
2200 | inode = obj->filp->f_path.dentry->d_inode; | |
2201 | mapping = inode->i_mapping; | |
2202 | for (i = 0; i < page_count; i++) { | |
4bdadb97 | 2203 | page = read_cache_page_gfp(mapping, i, |
985b823b | 2204 | GFP_HIGHUSER | |
4bdadb97 | 2205 | __GFP_COLD | |
cd9f040d | 2206 | __GFP_RECLAIMABLE | |
4bdadb97 | 2207 | gfpmask); |
1f2b1013 CW |
2208 | if (IS_ERR(page)) |
2209 | goto err_pages; | |
2210 | ||
856fa198 | 2211 | obj_priv->pages[i] = page; |
673a394b | 2212 | } |
280b713b EA |
2213 | |
2214 | if (obj_priv->tiling_mode != I915_TILING_NONE) | |
2215 | i915_gem_object_do_bit_17_swizzle(obj); | |
2216 | ||
673a394b | 2217 | return 0; |
1f2b1013 CW |
2218 | |
2219 | err_pages: | |
2220 | while (i--) | |
2221 | page_cache_release(obj_priv->pages[i]); | |
2222 | ||
2223 | drm_free_large(obj_priv->pages); | |
2224 | obj_priv->pages = NULL; | |
2225 | obj_priv->pages_refcount--; | |
2226 | return PTR_ERR(page); | |
673a394b EA |
2227 | } |
2228 | ||
4e901fdc EA |
2229 | static void sandybridge_write_fence_reg(struct drm_i915_fence_reg *reg) |
2230 | { | |
2231 | struct drm_gem_object *obj = reg->obj; | |
2232 | struct drm_device *dev = obj->dev; | |
2233 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2234 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
4e901fdc EA |
2235 | int regnum = obj_priv->fence_reg; |
2236 | uint64_t val; | |
2237 | ||
2238 | val = (uint64_t)((obj_priv->gtt_offset + obj->size - 4096) & | |
2239 | 0xfffff000) << 32; | |
2240 | val |= obj_priv->gtt_offset & 0xfffff000; | |
2241 | val |= (uint64_t)((obj_priv->stride / 128) - 1) << | |
2242 | SANDYBRIDGE_FENCE_PITCH_SHIFT; | |
2243 | ||
2244 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2245 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; | |
2246 | val |= I965_FENCE_REG_VALID; | |
2247 | ||
2248 | I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + (regnum * 8), val); | |
2249 | } | |
2250 | ||
de151cf6 JB |
2251 | static void i965_write_fence_reg(struct drm_i915_fence_reg *reg) |
2252 | { | |
2253 | struct drm_gem_object *obj = reg->obj; | |
2254 | struct drm_device *dev = obj->dev; | |
2255 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2256 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
2257 | int regnum = obj_priv->fence_reg; |
2258 | uint64_t val; | |
2259 | ||
2260 | val = (uint64_t)((obj_priv->gtt_offset + obj->size - 4096) & | |
2261 | 0xfffff000) << 32; | |
2262 | val |= obj_priv->gtt_offset & 0xfffff000; | |
2263 | val |= ((obj_priv->stride / 128) - 1) << I965_FENCE_PITCH_SHIFT; | |
2264 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2265 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; | |
2266 | val |= I965_FENCE_REG_VALID; | |
2267 | ||
2268 | I915_WRITE64(FENCE_REG_965_0 + (regnum * 8), val); | |
2269 | } | |
2270 | ||
2271 | static void i915_write_fence_reg(struct drm_i915_fence_reg *reg) | |
2272 | { | |
2273 | struct drm_gem_object *obj = reg->obj; | |
2274 | struct drm_device *dev = obj->dev; | |
2275 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2276 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 | 2277 | int regnum = obj_priv->fence_reg; |
0f973f27 | 2278 | int tile_width; |
dc529a4f | 2279 | uint32_t fence_reg, val; |
de151cf6 JB |
2280 | uint32_t pitch_val; |
2281 | ||
2282 | if ((obj_priv->gtt_offset & ~I915_FENCE_START_MASK) || | |
2283 | (obj_priv->gtt_offset & (obj->size - 1))) { | |
f06da264 | 2284 | WARN(1, "%s: object 0x%08x not 1M or size (0x%zx) aligned\n", |
0f973f27 | 2285 | __func__, obj_priv->gtt_offset, obj->size); |
de151cf6 JB |
2286 | return; |
2287 | } | |
2288 | ||
0f973f27 JB |
2289 | if (obj_priv->tiling_mode == I915_TILING_Y && |
2290 | HAS_128_BYTE_Y_TILING(dev)) | |
2291 | tile_width = 128; | |
de151cf6 | 2292 | else |
0f973f27 JB |
2293 | tile_width = 512; |
2294 | ||
2295 | /* Note: pitch better be a power of two tile widths */ | |
2296 | pitch_val = obj_priv->stride / tile_width; | |
2297 | pitch_val = ffs(pitch_val) - 1; | |
de151cf6 | 2298 | |
c36a2a6d DV |
2299 | if (obj_priv->tiling_mode == I915_TILING_Y && |
2300 | HAS_128_BYTE_Y_TILING(dev)) | |
2301 | WARN_ON(pitch_val > I830_FENCE_MAX_PITCH_VAL); | |
2302 | else | |
2303 | WARN_ON(pitch_val > I915_FENCE_MAX_PITCH_VAL); | |
2304 | ||
de151cf6 JB |
2305 | val = obj_priv->gtt_offset; |
2306 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2307 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; | |
2308 | val |= I915_FENCE_SIZE_BITS(obj->size); | |
2309 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; | |
2310 | val |= I830_FENCE_REG_VALID; | |
2311 | ||
dc529a4f EA |
2312 | if (regnum < 8) |
2313 | fence_reg = FENCE_REG_830_0 + (regnum * 4); | |
2314 | else | |
2315 | fence_reg = FENCE_REG_945_8 + ((regnum - 8) * 4); | |
2316 | I915_WRITE(fence_reg, val); | |
de151cf6 JB |
2317 | } |
2318 | ||
2319 | static void i830_write_fence_reg(struct drm_i915_fence_reg *reg) | |
2320 | { | |
2321 | struct drm_gem_object *obj = reg->obj; | |
2322 | struct drm_device *dev = obj->dev; | |
2323 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2324 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
2325 | int regnum = obj_priv->fence_reg; |
2326 | uint32_t val; | |
2327 | uint32_t pitch_val; | |
8d7773a3 | 2328 | uint32_t fence_size_bits; |
de151cf6 | 2329 | |
8d7773a3 | 2330 | if ((obj_priv->gtt_offset & ~I830_FENCE_START_MASK) || |
de151cf6 | 2331 | (obj_priv->gtt_offset & (obj->size - 1))) { |
8d7773a3 | 2332 | WARN(1, "%s: object 0x%08x not 512K or size aligned\n", |
0f973f27 | 2333 | __func__, obj_priv->gtt_offset); |
de151cf6 JB |
2334 | return; |
2335 | } | |
2336 | ||
e76a16de EA |
2337 | pitch_val = obj_priv->stride / 128; |
2338 | pitch_val = ffs(pitch_val) - 1; | |
2339 | WARN_ON(pitch_val > I830_FENCE_MAX_PITCH_VAL); | |
2340 | ||
de151cf6 JB |
2341 | val = obj_priv->gtt_offset; |
2342 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2343 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; | |
8d7773a3 DV |
2344 | fence_size_bits = I830_FENCE_SIZE_BITS(obj->size); |
2345 | WARN_ON(fence_size_bits & ~0x00000f00); | |
2346 | val |= fence_size_bits; | |
de151cf6 JB |
2347 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; |
2348 | val |= I830_FENCE_REG_VALID; | |
2349 | ||
2350 | I915_WRITE(FENCE_REG_830_0 + (regnum * 4), val); | |
de151cf6 JB |
2351 | } |
2352 | ||
2cf34d7b CW |
2353 | static int i915_find_fence_reg(struct drm_device *dev, |
2354 | bool interruptible) | |
ae3db24a DV |
2355 | { |
2356 | struct drm_i915_fence_reg *reg = NULL; | |
2357 | struct drm_i915_gem_object *obj_priv = NULL; | |
2358 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2359 | struct drm_gem_object *obj = NULL; | |
2360 | int i, avail, ret; | |
2361 | ||
2362 | /* First try to find a free reg */ | |
2363 | avail = 0; | |
2364 | for (i = dev_priv->fence_reg_start; i < dev_priv->num_fence_regs; i++) { | |
2365 | reg = &dev_priv->fence_regs[i]; | |
2366 | if (!reg->obj) | |
2367 | return i; | |
2368 | ||
23010e43 | 2369 | obj_priv = to_intel_bo(reg->obj); |
ae3db24a DV |
2370 | if (!obj_priv->pin_count) |
2371 | avail++; | |
2372 | } | |
2373 | ||
2374 | if (avail == 0) | |
2375 | return -ENOSPC; | |
2376 | ||
2377 | /* None available, try to steal one or wait for a user to finish */ | |
2378 | i = I915_FENCE_REG_NONE; | |
007cc8ac DV |
2379 | list_for_each_entry(reg, &dev_priv->mm.fence_list, |
2380 | lru_list) { | |
2381 | obj = reg->obj; | |
2382 | obj_priv = to_intel_bo(obj); | |
ae3db24a DV |
2383 | |
2384 | if (obj_priv->pin_count) | |
2385 | continue; | |
2386 | ||
2387 | /* found one! */ | |
2388 | i = obj_priv->fence_reg; | |
2389 | break; | |
2390 | } | |
2391 | ||
2392 | BUG_ON(i == I915_FENCE_REG_NONE); | |
2393 | ||
2394 | /* We only have a reference on obj from the active list. put_fence_reg | |
2395 | * might drop that one, causing a use-after-free in it. So hold a | |
2396 | * private reference to obj like the other callers of put_fence_reg | |
2397 | * (set_tiling ioctl) do. */ | |
2398 | drm_gem_object_reference(obj); | |
2cf34d7b | 2399 | ret = i915_gem_object_put_fence_reg(obj, interruptible); |
ae3db24a DV |
2400 | drm_gem_object_unreference(obj); |
2401 | if (ret != 0) | |
2402 | return ret; | |
2403 | ||
2404 | return i; | |
2405 | } | |
2406 | ||
de151cf6 JB |
2407 | /** |
2408 | * i915_gem_object_get_fence_reg - set up a fence reg for an object | |
2409 | * @obj: object to map through a fence reg | |
2410 | * | |
2411 | * When mapping objects through the GTT, userspace wants to be able to write | |
2412 | * to them without having to worry about swizzling if the object is tiled. | |
2413 | * | |
2414 | * This function walks the fence regs looking for a free one for @obj, | |
2415 | * stealing one if it can't find any. | |
2416 | * | |
2417 | * It then sets up the reg based on the object's properties: address, pitch | |
2418 | * and tiling format. | |
2419 | */ | |
8c4b8c3f | 2420 | int |
2cf34d7b CW |
2421 | i915_gem_object_get_fence_reg(struct drm_gem_object *obj, |
2422 | bool interruptible) | |
de151cf6 JB |
2423 | { |
2424 | struct drm_device *dev = obj->dev; | |
79e53945 | 2425 | struct drm_i915_private *dev_priv = dev->dev_private; |
23010e43 | 2426 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 | 2427 | struct drm_i915_fence_reg *reg = NULL; |
ae3db24a | 2428 | int ret; |
de151cf6 | 2429 | |
a09ba7fa EA |
2430 | /* Just update our place in the LRU if our fence is getting used. */ |
2431 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) { | |
007cc8ac DV |
2432 | reg = &dev_priv->fence_regs[obj_priv->fence_reg]; |
2433 | list_move_tail(®->lru_list, &dev_priv->mm.fence_list); | |
a09ba7fa EA |
2434 | return 0; |
2435 | } | |
2436 | ||
de151cf6 JB |
2437 | switch (obj_priv->tiling_mode) { |
2438 | case I915_TILING_NONE: | |
2439 | WARN(1, "allocating a fence for non-tiled object?\n"); | |
2440 | break; | |
2441 | case I915_TILING_X: | |
0f973f27 JB |
2442 | if (!obj_priv->stride) |
2443 | return -EINVAL; | |
2444 | WARN((obj_priv->stride & (512 - 1)), | |
2445 | "object 0x%08x is X tiled but has non-512B pitch\n", | |
2446 | obj_priv->gtt_offset); | |
de151cf6 JB |
2447 | break; |
2448 | case I915_TILING_Y: | |
0f973f27 JB |
2449 | if (!obj_priv->stride) |
2450 | return -EINVAL; | |
2451 | WARN((obj_priv->stride & (128 - 1)), | |
2452 | "object 0x%08x is Y tiled but has non-128B pitch\n", | |
2453 | obj_priv->gtt_offset); | |
de151cf6 JB |
2454 | break; |
2455 | } | |
2456 | ||
2cf34d7b | 2457 | ret = i915_find_fence_reg(dev, interruptible); |
ae3db24a DV |
2458 | if (ret < 0) |
2459 | return ret; | |
de151cf6 | 2460 | |
ae3db24a DV |
2461 | obj_priv->fence_reg = ret; |
2462 | reg = &dev_priv->fence_regs[obj_priv->fence_reg]; | |
007cc8ac | 2463 | list_add_tail(®->lru_list, &dev_priv->mm.fence_list); |
a09ba7fa | 2464 | |
de151cf6 JB |
2465 | reg->obj = obj; |
2466 | ||
e259befd CW |
2467 | switch (INTEL_INFO(dev)->gen) { |
2468 | case 6: | |
4e901fdc | 2469 | sandybridge_write_fence_reg(reg); |
e259befd CW |
2470 | break; |
2471 | case 5: | |
2472 | case 4: | |
de151cf6 | 2473 | i965_write_fence_reg(reg); |
e259befd CW |
2474 | break; |
2475 | case 3: | |
de151cf6 | 2476 | i915_write_fence_reg(reg); |
e259befd CW |
2477 | break; |
2478 | case 2: | |
de151cf6 | 2479 | i830_write_fence_reg(reg); |
e259befd CW |
2480 | break; |
2481 | } | |
d9ddcb96 | 2482 | |
ae3db24a DV |
2483 | trace_i915_gem_object_get_fence(obj, obj_priv->fence_reg, |
2484 | obj_priv->tiling_mode); | |
1c5d22f7 | 2485 | |
d9ddcb96 | 2486 | return 0; |
de151cf6 JB |
2487 | } |
2488 | ||
2489 | /** | |
2490 | * i915_gem_clear_fence_reg - clear out fence register info | |
2491 | * @obj: object to clear | |
2492 | * | |
2493 | * Zeroes out the fence register itself and clears out the associated | |
2494 | * data structures in dev_priv and obj_priv. | |
2495 | */ | |
2496 | static void | |
2497 | i915_gem_clear_fence_reg(struct drm_gem_object *obj) | |
2498 | { | |
2499 | struct drm_device *dev = obj->dev; | |
79e53945 | 2500 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 2501 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
007cc8ac DV |
2502 | struct drm_i915_fence_reg *reg = |
2503 | &dev_priv->fence_regs[obj_priv->fence_reg]; | |
e259befd | 2504 | uint32_t fence_reg; |
de151cf6 | 2505 | |
e259befd CW |
2506 | switch (INTEL_INFO(dev)->gen) { |
2507 | case 6: | |
4e901fdc EA |
2508 | I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + |
2509 | (obj_priv->fence_reg * 8), 0); | |
e259befd CW |
2510 | break; |
2511 | case 5: | |
2512 | case 4: | |
de151cf6 | 2513 | I915_WRITE64(FENCE_REG_965_0 + (obj_priv->fence_reg * 8), 0); |
e259befd CW |
2514 | break; |
2515 | case 3: | |
9b74f734 | 2516 | if (obj_priv->fence_reg >= 8) |
e259befd | 2517 | fence_reg = FENCE_REG_945_8 + (obj_priv->fence_reg - 8) * 4; |
dc529a4f | 2518 | else |
e259befd CW |
2519 | case 2: |
2520 | fence_reg = FENCE_REG_830_0 + obj_priv->fence_reg * 4; | |
dc529a4f EA |
2521 | |
2522 | I915_WRITE(fence_reg, 0); | |
e259befd | 2523 | break; |
dc529a4f | 2524 | } |
de151cf6 | 2525 | |
007cc8ac | 2526 | reg->obj = NULL; |
de151cf6 | 2527 | obj_priv->fence_reg = I915_FENCE_REG_NONE; |
007cc8ac | 2528 | list_del_init(®->lru_list); |
de151cf6 JB |
2529 | } |
2530 | ||
52dc7d32 CW |
2531 | /** |
2532 | * i915_gem_object_put_fence_reg - waits on outstanding fenced access | |
2533 | * to the buffer to finish, and then resets the fence register. | |
2534 | * @obj: tiled object holding a fence register. | |
2cf34d7b | 2535 | * @bool: whether the wait upon the fence is interruptible |
52dc7d32 CW |
2536 | * |
2537 | * Zeroes out the fence register itself and clears out the associated | |
2538 | * data structures in dev_priv and obj_priv. | |
2539 | */ | |
2540 | int | |
2cf34d7b CW |
2541 | i915_gem_object_put_fence_reg(struct drm_gem_object *obj, |
2542 | bool interruptible) | |
52dc7d32 CW |
2543 | { |
2544 | struct drm_device *dev = obj->dev; | |
53640e1d | 2545 | struct drm_i915_private *dev_priv = dev->dev_private; |
23010e43 | 2546 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
53640e1d | 2547 | struct drm_i915_fence_reg *reg; |
52dc7d32 CW |
2548 | |
2549 | if (obj_priv->fence_reg == I915_FENCE_REG_NONE) | |
2550 | return 0; | |
2551 | ||
10ae9bd2 DV |
2552 | /* If we've changed tiling, GTT-mappings of the object |
2553 | * need to re-fault to ensure that the correct fence register | |
2554 | * setup is in place. | |
2555 | */ | |
2556 | i915_gem_release_mmap(obj); | |
2557 | ||
52dc7d32 CW |
2558 | /* On the i915, GPU access to tiled buffers is via a fence, |
2559 | * therefore we must wait for any outstanding access to complete | |
2560 | * before clearing the fence. | |
2561 | */ | |
53640e1d CW |
2562 | reg = &dev_priv->fence_regs[obj_priv->fence_reg]; |
2563 | if (reg->gpu) { | |
52dc7d32 CW |
2564 | int ret; |
2565 | ||
2cf34d7b | 2566 | ret = i915_gem_object_flush_gpu_write_domain(obj, true); |
0bc23aad CW |
2567 | if (ret) |
2568 | return ret; | |
2569 | ||
2cf34d7b | 2570 | ret = i915_gem_object_wait_rendering(obj, interruptible); |
0bc23aad | 2571 | if (ret) |
52dc7d32 | 2572 | return ret; |
53640e1d CW |
2573 | |
2574 | reg->gpu = false; | |
52dc7d32 CW |
2575 | } |
2576 | ||
4a726612 | 2577 | i915_gem_object_flush_gtt_write_domain(obj); |
0bc23aad | 2578 | i915_gem_clear_fence_reg(obj); |
52dc7d32 CW |
2579 | |
2580 | return 0; | |
2581 | } | |
2582 | ||
673a394b EA |
2583 | /** |
2584 | * Finds free space in the GTT aperture and binds the object there. | |
2585 | */ | |
2586 | static int | |
2587 | i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment) | |
2588 | { | |
2589 | struct drm_device *dev = obj->dev; | |
2590 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2591 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b | 2592 | struct drm_mm_node *free_space; |
4bdadb97 | 2593 | gfp_t gfpmask = __GFP_NORETRY | __GFP_NOWARN; |
07f73f69 | 2594 | int ret; |
673a394b | 2595 | |
bb6baf76 | 2596 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
3ef94daa CW |
2597 | DRM_ERROR("Attempting to bind a purgeable object\n"); |
2598 | return -EINVAL; | |
2599 | } | |
2600 | ||
673a394b | 2601 | if (alignment == 0) |
0f973f27 | 2602 | alignment = i915_gem_get_gtt_alignment(obj); |
8d7773a3 | 2603 | if (alignment & (i915_gem_get_gtt_alignment(obj) - 1)) { |
673a394b EA |
2604 | DRM_ERROR("Invalid object alignment requested %u\n", alignment); |
2605 | return -EINVAL; | |
2606 | } | |
2607 | ||
654fc607 CW |
2608 | /* If the object is bigger than the entire aperture, reject it early |
2609 | * before evicting everything in a vain attempt to find space. | |
2610 | */ | |
2611 | if (obj->size > dev->gtt_total) { | |
2612 | DRM_ERROR("Attempting to bind an object larger than the aperture\n"); | |
2613 | return -E2BIG; | |
2614 | } | |
2615 | ||
673a394b EA |
2616 | search_free: |
2617 | free_space = drm_mm_search_free(&dev_priv->mm.gtt_space, | |
2618 | obj->size, alignment, 0); | |
2619 | if (free_space != NULL) { | |
2620 | obj_priv->gtt_space = drm_mm_get_block(free_space, obj->size, | |
2621 | alignment); | |
db3307a9 | 2622 | if (obj_priv->gtt_space != NULL) |
673a394b | 2623 | obj_priv->gtt_offset = obj_priv->gtt_space->start; |
673a394b EA |
2624 | } |
2625 | if (obj_priv->gtt_space == NULL) { | |
2626 | /* If the gtt is empty and we're still having trouble | |
2627 | * fitting our object in, we're out of memory. | |
2628 | */ | |
0108a3ed | 2629 | ret = i915_gem_evict_something(dev, obj->size, alignment); |
9731129c | 2630 | if (ret) |
673a394b | 2631 | return ret; |
9731129c | 2632 | |
673a394b EA |
2633 | goto search_free; |
2634 | } | |
2635 | ||
4bdadb97 | 2636 | ret = i915_gem_object_get_pages(obj, gfpmask); |
673a394b EA |
2637 | if (ret) { |
2638 | drm_mm_put_block(obj_priv->gtt_space); | |
2639 | obj_priv->gtt_space = NULL; | |
07f73f69 CW |
2640 | |
2641 | if (ret == -ENOMEM) { | |
2642 | /* first try to clear up some space from the GTT */ | |
0108a3ed DV |
2643 | ret = i915_gem_evict_something(dev, obj->size, |
2644 | alignment); | |
07f73f69 | 2645 | if (ret) { |
07f73f69 | 2646 | /* now try to shrink everyone else */ |
4bdadb97 CW |
2647 | if (gfpmask) { |
2648 | gfpmask = 0; | |
2649 | goto search_free; | |
07f73f69 CW |
2650 | } |
2651 | ||
2652 | return ret; | |
2653 | } | |
2654 | ||
2655 | goto search_free; | |
2656 | } | |
2657 | ||
673a394b EA |
2658 | return ret; |
2659 | } | |
2660 | ||
673a394b EA |
2661 | /* Create an AGP memory structure pointing at our pages, and bind it |
2662 | * into the GTT. | |
2663 | */ | |
2664 | obj_priv->agp_mem = drm_agp_bind_pages(dev, | |
856fa198 | 2665 | obj_priv->pages, |
07f73f69 | 2666 | obj->size >> PAGE_SHIFT, |
ba1eb1d8 KP |
2667 | obj_priv->gtt_offset, |
2668 | obj_priv->agp_type); | |
673a394b | 2669 | if (obj_priv->agp_mem == NULL) { |
856fa198 | 2670 | i915_gem_object_put_pages(obj); |
673a394b EA |
2671 | drm_mm_put_block(obj_priv->gtt_space); |
2672 | obj_priv->gtt_space = NULL; | |
07f73f69 | 2673 | |
0108a3ed | 2674 | ret = i915_gem_evict_something(dev, obj->size, alignment); |
9731129c | 2675 | if (ret) |
07f73f69 | 2676 | return ret; |
07f73f69 CW |
2677 | |
2678 | goto search_free; | |
673a394b EA |
2679 | } |
2680 | atomic_inc(&dev->gtt_count); | |
2681 | atomic_add(obj->size, &dev->gtt_memory); | |
2682 | ||
bf1a1092 CW |
2683 | /* keep track of bounds object by adding it to the inactive list */ |
2684 | list_add_tail(&obj_priv->list, &dev_priv->mm.inactive_list); | |
2685 | ||
673a394b EA |
2686 | /* Assert that the object is not currently in any GPU domain. As it |
2687 | * wasn't in the GTT, there shouldn't be any way it could have been in | |
2688 | * a GPU cache | |
2689 | */ | |
21d509e3 CW |
2690 | BUG_ON(obj->read_domains & I915_GEM_GPU_DOMAINS); |
2691 | BUG_ON(obj->write_domain & I915_GEM_GPU_DOMAINS); | |
673a394b | 2692 | |
1c5d22f7 CW |
2693 | trace_i915_gem_object_bind(obj, obj_priv->gtt_offset); |
2694 | ||
673a394b EA |
2695 | return 0; |
2696 | } | |
2697 | ||
2698 | void | |
2699 | i915_gem_clflush_object(struct drm_gem_object *obj) | |
2700 | { | |
23010e43 | 2701 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
2702 | |
2703 | /* If we don't have a page list set up, then we're not pinned | |
2704 | * to GPU, and we can ignore the cache flush because it'll happen | |
2705 | * again at bind time. | |
2706 | */ | |
856fa198 | 2707 | if (obj_priv->pages == NULL) |
673a394b EA |
2708 | return; |
2709 | ||
1c5d22f7 | 2710 | trace_i915_gem_object_clflush(obj); |
cfa16a0d | 2711 | |
856fa198 | 2712 | drm_clflush_pages(obj_priv->pages, obj->size / PAGE_SIZE); |
673a394b EA |
2713 | } |
2714 | ||
e47c68e9 | 2715 | /** Flushes any GPU write domain for the object if it's dirty. */ |
2dafb1e0 | 2716 | static int |
ba3d8d74 DV |
2717 | i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj, |
2718 | bool pipelined) | |
e47c68e9 EA |
2719 | { |
2720 | struct drm_device *dev = obj->dev; | |
1c5d22f7 | 2721 | uint32_t old_write_domain; |
e47c68e9 EA |
2722 | |
2723 | if ((obj->write_domain & I915_GEM_GPU_DOMAINS) == 0) | |
2dafb1e0 | 2724 | return 0; |
e47c68e9 EA |
2725 | |
2726 | /* Queue the GPU write cache flushing we need. */ | |
1c5d22f7 | 2727 | old_write_domain = obj->write_domain; |
c78ec30b | 2728 | i915_gem_flush_ring(dev, NULL, |
9220434a CW |
2729 | to_intel_bo(obj)->ring, |
2730 | 0, obj->write_domain); | |
48b956c5 | 2731 | BUG_ON(obj->write_domain); |
1c5d22f7 CW |
2732 | |
2733 | trace_i915_gem_object_change_domain(obj, | |
2734 | obj->read_domains, | |
2735 | old_write_domain); | |
ba3d8d74 DV |
2736 | |
2737 | if (pipelined) | |
2738 | return 0; | |
2739 | ||
2cf34d7b | 2740 | return i915_gem_object_wait_rendering(obj, true); |
e47c68e9 EA |
2741 | } |
2742 | ||
2743 | /** Flushes the GTT write domain for the object if it's dirty. */ | |
2744 | static void | |
2745 | i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj) | |
2746 | { | |
1c5d22f7 CW |
2747 | uint32_t old_write_domain; |
2748 | ||
e47c68e9 EA |
2749 | if (obj->write_domain != I915_GEM_DOMAIN_GTT) |
2750 | return; | |
2751 | ||
2752 | /* No actual flushing is required for the GTT write domain. Writes | |
2753 | * to it immediately go to main memory as far as we know, so there's | |
2754 | * no chipset flush. It also doesn't land in render cache. | |
2755 | */ | |
1c5d22f7 | 2756 | old_write_domain = obj->write_domain; |
e47c68e9 | 2757 | obj->write_domain = 0; |
1c5d22f7 CW |
2758 | |
2759 | trace_i915_gem_object_change_domain(obj, | |
2760 | obj->read_domains, | |
2761 | old_write_domain); | |
e47c68e9 EA |
2762 | } |
2763 | ||
2764 | /** Flushes the CPU write domain for the object if it's dirty. */ | |
2765 | static void | |
2766 | i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj) | |
2767 | { | |
2768 | struct drm_device *dev = obj->dev; | |
1c5d22f7 | 2769 | uint32_t old_write_domain; |
e47c68e9 EA |
2770 | |
2771 | if (obj->write_domain != I915_GEM_DOMAIN_CPU) | |
2772 | return; | |
2773 | ||
2774 | i915_gem_clflush_object(obj); | |
2775 | drm_agp_chipset_flush(dev); | |
1c5d22f7 | 2776 | old_write_domain = obj->write_domain; |
e47c68e9 | 2777 | obj->write_domain = 0; |
1c5d22f7 CW |
2778 | |
2779 | trace_i915_gem_object_change_domain(obj, | |
2780 | obj->read_domains, | |
2781 | old_write_domain); | |
e47c68e9 EA |
2782 | } |
2783 | ||
2ef7eeaa EA |
2784 | /** |
2785 | * Moves a single object to the GTT read, and possibly write domain. | |
2786 | * | |
2787 | * This function returns when the move is complete, including waiting on | |
2788 | * flushes to occur. | |
2789 | */ | |
79e53945 | 2790 | int |
2ef7eeaa EA |
2791 | i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj, int write) |
2792 | { | |
23010e43 | 2793 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
1c5d22f7 | 2794 | uint32_t old_write_domain, old_read_domains; |
e47c68e9 | 2795 | int ret; |
2ef7eeaa | 2796 | |
02354392 EA |
2797 | /* Not valid to be called on unbound objects. */ |
2798 | if (obj_priv->gtt_space == NULL) | |
2799 | return -EINVAL; | |
2800 | ||
ba3d8d74 | 2801 | ret = i915_gem_object_flush_gpu_write_domain(obj, false); |
e47c68e9 EA |
2802 | if (ret != 0) |
2803 | return ret; | |
2804 | ||
7213342d | 2805 | i915_gem_object_flush_cpu_write_domain(obj); |
1c5d22f7 | 2806 | |
ba3d8d74 | 2807 | if (write) { |
2cf34d7b | 2808 | ret = i915_gem_object_wait_rendering(obj, true); |
ba3d8d74 DV |
2809 | if (ret) |
2810 | return ret; | |
ba3d8d74 | 2811 | } |
2ef7eeaa | 2812 | |
7213342d CW |
2813 | old_write_domain = obj->write_domain; |
2814 | old_read_domains = obj->read_domains; | |
2ef7eeaa | 2815 | |
e47c68e9 EA |
2816 | /* It should now be out of any other write domains, and we can update |
2817 | * the domain values for our changes. | |
2818 | */ | |
2819 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_GTT) != 0); | |
2820 | obj->read_domains |= I915_GEM_DOMAIN_GTT; | |
2821 | if (write) { | |
7213342d | 2822 | obj->read_domains = I915_GEM_DOMAIN_GTT; |
e47c68e9 EA |
2823 | obj->write_domain = I915_GEM_DOMAIN_GTT; |
2824 | obj_priv->dirty = 1; | |
2ef7eeaa EA |
2825 | } |
2826 | ||
1c5d22f7 CW |
2827 | trace_i915_gem_object_change_domain(obj, |
2828 | old_read_domains, | |
2829 | old_write_domain); | |
2830 | ||
e47c68e9 EA |
2831 | return 0; |
2832 | } | |
2833 | ||
b9241ea3 ZW |
2834 | /* |
2835 | * Prepare buffer for display plane. Use uninterruptible for possible flush | |
2836 | * wait, as in modesetting process we're not supposed to be interrupted. | |
2837 | */ | |
2838 | int | |
48b956c5 CW |
2839 | i915_gem_object_set_to_display_plane(struct drm_gem_object *obj, |
2840 | bool pipelined) | |
b9241ea3 | 2841 | { |
23010e43 | 2842 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
ba3d8d74 | 2843 | uint32_t old_read_domains; |
b9241ea3 ZW |
2844 | int ret; |
2845 | ||
2846 | /* Not valid to be called on unbound objects. */ | |
2847 | if (obj_priv->gtt_space == NULL) | |
2848 | return -EINVAL; | |
2849 | ||
ced270fa | 2850 | ret = i915_gem_object_flush_gpu_write_domain(obj, true); |
48b956c5 | 2851 | if (ret) |
e35a41de | 2852 | return ret; |
b9241ea3 | 2853 | |
ced270fa CW |
2854 | /* Currently, we are always called from an non-interruptible context. */ |
2855 | if (!pipelined) { | |
2856 | ret = i915_gem_object_wait_rendering(obj, false); | |
2857 | if (ret) | |
2858 | return ret; | |
2859 | } | |
2860 | ||
b118c1e3 CW |
2861 | i915_gem_object_flush_cpu_write_domain(obj); |
2862 | ||
b9241ea3 | 2863 | old_read_domains = obj->read_domains; |
c78ec30b | 2864 | obj->read_domains |= I915_GEM_DOMAIN_GTT; |
b9241ea3 ZW |
2865 | |
2866 | trace_i915_gem_object_change_domain(obj, | |
2867 | old_read_domains, | |
ba3d8d74 | 2868 | obj->write_domain); |
b9241ea3 ZW |
2869 | |
2870 | return 0; | |
2871 | } | |
2872 | ||
e47c68e9 EA |
2873 | /** |
2874 | * Moves a single object to the CPU read, and possibly write domain. | |
2875 | * | |
2876 | * This function returns when the move is complete, including waiting on | |
2877 | * flushes to occur. | |
2878 | */ | |
2879 | static int | |
2880 | i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, int write) | |
2881 | { | |
1c5d22f7 | 2882 | uint32_t old_write_domain, old_read_domains; |
e47c68e9 EA |
2883 | int ret; |
2884 | ||
ba3d8d74 | 2885 | ret = i915_gem_object_flush_gpu_write_domain(obj, false); |
e47c68e9 EA |
2886 | if (ret != 0) |
2887 | return ret; | |
2ef7eeaa | 2888 | |
e47c68e9 | 2889 | i915_gem_object_flush_gtt_write_domain(obj); |
2ef7eeaa | 2890 | |
e47c68e9 EA |
2891 | /* If we have a partially-valid cache of the object in the CPU, |
2892 | * finish invalidating it and free the per-page flags. | |
2ef7eeaa | 2893 | */ |
e47c68e9 | 2894 | i915_gem_object_set_to_full_cpu_read_domain(obj); |
2ef7eeaa | 2895 | |
7213342d | 2896 | if (write) { |
2cf34d7b | 2897 | ret = i915_gem_object_wait_rendering(obj, true); |
7213342d CW |
2898 | if (ret) |
2899 | return ret; | |
2900 | } | |
2901 | ||
1c5d22f7 CW |
2902 | old_write_domain = obj->write_domain; |
2903 | old_read_domains = obj->read_domains; | |
2904 | ||
e47c68e9 EA |
2905 | /* Flush the CPU cache if it's still invalid. */ |
2906 | if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) { | |
2ef7eeaa | 2907 | i915_gem_clflush_object(obj); |
2ef7eeaa | 2908 | |
e47c68e9 | 2909 | obj->read_domains |= I915_GEM_DOMAIN_CPU; |
2ef7eeaa EA |
2910 | } |
2911 | ||
2912 | /* It should now be out of any other write domains, and we can update | |
2913 | * the domain values for our changes. | |
2914 | */ | |
e47c68e9 EA |
2915 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0); |
2916 | ||
2917 | /* If we're writing through the CPU, then the GPU read domains will | |
2918 | * need to be invalidated at next use. | |
2919 | */ | |
2920 | if (write) { | |
c78ec30b | 2921 | obj->read_domains = I915_GEM_DOMAIN_CPU; |
e47c68e9 EA |
2922 | obj->write_domain = I915_GEM_DOMAIN_CPU; |
2923 | } | |
2ef7eeaa | 2924 | |
1c5d22f7 CW |
2925 | trace_i915_gem_object_change_domain(obj, |
2926 | old_read_domains, | |
2927 | old_write_domain); | |
2928 | ||
2ef7eeaa EA |
2929 | return 0; |
2930 | } | |
2931 | ||
673a394b EA |
2932 | /* |
2933 | * Set the next domain for the specified object. This | |
2934 | * may not actually perform the necessary flushing/invaliding though, | |
2935 | * as that may want to be batched with other set_domain operations | |
2936 | * | |
2937 | * This is (we hope) the only really tricky part of gem. The goal | |
2938 | * is fairly simple -- track which caches hold bits of the object | |
2939 | * and make sure they remain coherent. A few concrete examples may | |
2940 | * help to explain how it works. For shorthand, we use the notation | |
2941 | * (read_domains, write_domain), e.g. (CPU, CPU) to indicate the | |
2942 | * a pair of read and write domain masks. | |
2943 | * | |
2944 | * Case 1: the batch buffer | |
2945 | * | |
2946 | * 1. Allocated | |
2947 | * 2. Written by CPU | |
2948 | * 3. Mapped to GTT | |
2949 | * 4. Read by GPU | |
2950 | * 5. Unmapped from GTT | |
2951 | * 6. Freed | |
2952 | * | |
2953 | * Let's take these a step at a time | |
2954 | * | |
2955 | * 1. Allocated | |
2956 | * Pages allocated from the kernel may still have | |
2957 | * cache contents, so we set them to (CPU, CPU) always. | |
2958 | * 2. Written by CPU (using pwrite) | |
2959 | * The pwrite function calls set_domain (CPU, CPU) and | |
2960 | * this function does nothing (as nothing changes) | |
2961 | * 3. Mapped by GTT | |
2962 | * This function asserts that the object is not | |
2963 | * currently in any GPU-based read or write domains | |
2964 | * 4. Read by GPU | |
2965 | * i915_gem_execbuffer calls set_domain (COMMAND, 0). | |
2966 | * As write_domain is zero, this function adds in the | |
2967 | * current read domains (CPU+COMMAND, 0). | |
2968 | * flush_domains is set to CPU. | |
2969 | * invalidate_domains is set to COMMAND | |
2970 | * clflush is run to get data out of the CPU caches | |
2971 | * then i915_dev_set_domain calls i915_gem_flush to | |
2972 | * emit an MI_FLUSH and drm_agp_chipset_flush | |
2973 | * 5. Unmapped from GTT | |
2974 | * i915_gem_object_unbind calls set_domain (CPU, CPU) | |
2975 | * flush_domains and invalidate_domains end up both zero | |
2976 | * so no flushing/invalidating happens | |
2977 | * 6. Freed | |
2978 | * yay, done | |
2979 | * | |
2980 | * Case 2: The shared render buffer | |
2981 | * | |
2982 | * 1. Allocated | |
2983 | * 2. Mapped to GTT | |
2984 | * 3. Read/written by GPU | |
2985 | * 4. set_domain to (CPU,CPU) | |
2986 | * 5. Read/written by CPU | |
2987 | * 6. Read/written by GPU | |
2988 | * | |
2989 | * 1. Allocated | |
2990 | * Same as last example, (CPU, CPU) | |
2991 | * 2. Mapped to GTT | |
2992 | * Nothing changes (assertions find that it is not in the GPU) | |
2993 | * 3. Read/written by GPU | |
2994 | * execbuffer calls set_domain (RENDER, RENDER) | |
2995 | * flush_domains gets CPU | |
2996 | * invalidate_domains gets GPU | |
2997 | * clflush (obj) | |
2998 | * MI_FLUSH and drm_agp_chipset_flush | |
2999 | * 4. set_domain (CPU, CPU) | |
3000 | * flush_domains gets GPU | |
3001 | * invalidate_domains gets CPU | |
3002 | * wait_rendering (obj) to make sure all drawing is complete. | |
3003 | * This will include an MI_FLUSH to get the data from GPU | |
3004 | * to memory | |
3005 | * clflush (obj) to invalidate the CPU cache | |
3006 | * Another MI_FLUSH in i915_gem_flush (eliminate this somehow?) | |
3007 | * 5. Read/written by CPU | |
3008 | * cache lines are loaded and dirtied | |
3009 | * 6. Read written by GPU | |
3010 | * Same as last GPU access | |
3011 | * | |
3012 | * Case 3: The constant buffer | |
3013 | * | |
3014 | * 1. Allocated | |
3015 | * 2. Written by CPU | |
3016 | * 3. Read by GPU | |
3017 | * 4. Updated (written) by CPU again | |
3018 | * 5. Read by GPU | |
3019 | * | |
3020 | * 1. Allocated | |
3021 | * (CPU, CPU) | |
3022 | * 2. Written by CPU | |
3023 | * (CPU, CPU) | |
3024 | * 3. Read by GPU | |
3025 | * (CPU+RENDER, 0) | |
3026 | * flush_domains = CPU | |
3027 | * invalidate_domains = RENDER | |
3028 | * clflush (obj) | |
3029 | * MI_FLUSH | |
3030 | * drm_agp_chipset_flush | |
3031 | * 4. Updated (written) by CPU again | |
3032 | * (CPU, CPU) | |
3033 | * flush_domains = 0 (no previous write domain) | |
3034 | * invalidate_domains = 0 (no new read domains) | |
3035 | * 5. Read by GPU | |
3036 | * (CPU+RENDER, 0) | |
3037 | * flush_domains = CPU | |
3038 | * invalidate_domains = RENDER | |
3039 | * clflush (obj) | |
3040 | * MI_FLUSH | |
3041 | * drm_agp_chipset_flush | |
3042 | */ | |
c0d90829 | 3043 | static void |
8b0e378a | 3044 | i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj) |
673a394b EA |
3045 | { |
3046 | struct drm_device *dev = obj->dev; | |
9220434a | 3047 | struct drm_i915_private *dev_priv = dev->dev_private; |
23010e43 | 3048 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
3049 | uint32_t invalidate_domains = 0; |
3050 | uint32_t flush_domains = 0; | |
1c5d22f7 | 3051 | uint32_t old_read_domains; |
e47c68e9 | 3052 | |
8b0e378a EA |
3053 | BUG_ON(obj->pending_read_domains & I915_GEM_DOMAIN_CPU); |
3054 | BUG_ON(obj->pending_write_domain == I915_GEM_DOMAIN_CPU); | |
673a394b | 3055 | |
652c393a JB |
3056 | intel_mark_busy(dev, obj); |
3057 | ||
673a394b EA |
3058 | /* |
3059 | * If the object isn't moving to a new write domain, | |
3060 | * let the object stay in multiple read domains | |
3061 | */ | |
8b0e378a EA |
3062 | if (obj->pending_write_domain == 0) |
3063 | obj->pending_read_domains |= obj->read_domains; | |
673a394b EA |
3064 | else |
3065 | obj_priv->dirty = 1; | |
3066 | ||
3067 | /* | |
3068 | * Flush the current write domain if | |
3069 | * the new read domains don't match. Invalidate | |
3070 | * any read domains which differ from the old | |
3071 | * write domain | |
3072 | */ | |
8b0e378a EA |
3073 | if (obj->write_domain && |
3074 | obj->write_domain != obj->pending_read_domains) { | |
673a394b | 3075 | flush_domains |= obj->write_domain; |
8b0e378a EA |
3076 | invalidate_domains |= |
3077 | obj->pending_read_domains & ~obj->write_domain; | |
673a394b EA |
3078 | } |
3079 | /* | |
3080 | * Invalidate any read caches which may have | |
3081 | * stale data. That is, any new read domains. | |
3082 | */ | |
8b0e378a | 3083 | invalidate_domains |= obj->pending_read_domains & ~obj->read_domains; |
3d2a812a | 3084 | if ((flush_domains | invalidate_domains) & I915_GEM_DOMAIN_CPU) |
673a394b | 3085 | i915_gem_clflush_object(obj); |
673a394b | 3086 | |
1c5d22f7 CW |
3087 | old_read_domains = obj->read_domains; |
3088 | ||
efbeed96 EA |
3089 | /* The actual obj->write_domain will be updated with |
3090 | * pending_write_domain after we emit the accumulated flush for all | |
3091 | * of our domain changes in execbuffers (which clears objects' | |
3092 | * write_domains). So if we have a current write domain that we | |
3093 | * aren't changing, set pending_write_domain to that. | |
3094 | */ | |
3095 | if (flush_domains == 0 && obj->pending_write_domain == 0) | |
3096 | obj->pending_write_domain = obj->write_domain; | |
8b0e378a | 3097 | obj->read_domains = obj->pending_read_domains; |
673a394b EA |
3098 | |
3099 | dev->invalidate_domains |= invalidate_domains; | |
3100 | dev->flush_domains |= flush_domains; | |
9220434a CW |
3101 | if (obj_priv->ring) |
3102 | dev_priv->mm.flush_rings |= obj_priv->ring->id; | |
1c5d22f7 CW |
3103 | |
3104 | trace_i915_gem_object_change_domain(obj, | |
3105 | old_read_domains, | |
3106 | obj->write_domain); | |
673a394b EA |
3107 | } |
3108 | ||
3109 | /** | |
e47c68e9 | 3110 | * Moves the object from a partially CPU read to a full one. |
673a394b | 3111 | * |
e47c68e9 EA |
3112 | * Note that this only resolves i915_gem_object_set_cpu_read_domain_range(), |
3113 | * and doesn't handle transitioning from !(read_domains & I915_GEM_DOMAIN_CPU). | |
673a394b | 3114 | */ |
e47c68e9 EA |
3115 | static void |
3116 | i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj) | |
673a394b | 3117 | { |
23010e43 | 3118 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b | 3119 | |
e47c68e9 EA |
3120 | if (!obj_priv->page_cpu_valid) |
3121 | return; | |
3122 | ||
3123 | /* If we're partially in the CPU read domain, finish moving it in. | |
3124 | */ | |
3125 | if (obj->read_domains & I915_GEM_DOMAIN_CPU) { | |
3126 | int i; | |
3127 | ||
3128 | for (i = 0; i <= (obj->size - 1) / PAGE_SIZE; i++) { | |
3129 | if (obj_priv->page_cpu_valid[i]) | |
3130 | continue; | |
856fa198 | 3131 | drm_clflush_pages(obj_priv->pages + i, 1); |
e47c68e9 | 3132 | } |
e47c68e9 EA |
3133 | } |
3134 | ||
3135 | /* Free the page_cpu_valid mappings which are now stale, whether | |
3136 | * or not we've got I915_GEM_DOMAIN_CPU. | |
3137 | */ | |
9a298b2a | 3138 | kfree(obj_priv->page_cpu_valid); |
e47c68e9 EA |
3139 | obj_priv->page_cpu_valid = NULL; |
3140 | } | |
3141 | ||
3142 | /** | |
3143 | * Set the CPU read domain on a range of the object. | |
3144 | * | |
3145 | * The object ends up with I915_GEM_DOMAIN_CPU in its read flags although it's | |
3146 | * not entirely valid. The page_cpu_valid member of the object flags which | |
3147 | * pages have been flushed, and will be respected by | |
3148 | * i915_gem_object_set_to_cpu_domain() if it's called on to get a valid mapping | |
3149 | * of the whole object. | |
3150 | * | |
3151 | * This function returns when the move is complete, including waiting on | |
3152 | * flushes to occur. | |
3153 | */ | |
3154 | static int | |
3155 | i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj, | |
3156 | uint64_t offset, uint64_t size) | |
3157 | { | |
23010e43 | 3158 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
1c5d22f7 | 3159 | uint32_t old_read_domains; |
e47c68e9 | 3160 | int i, ret; |
673a394b | 3161 | |
e47c68e9 EA |
3162 | if (offset == 0 && size == obj->size) |
3163 | return i915_gem_object_set_to_cpu_domain(obj, 0); | |
673a394b | 3164 | |
ba3d8d74 | 3165 | ret = i915_gem_object_flush_gpu_write_domain(obj, false); |
e47c68e9 | 3166 | if (ret != 0) |
6a47baa6 | 3167 | return ret; |
e47c68e9 EA |
3168 | i915_gem_object_flush_gtt_write_domain(obj); |
3169 | ||
3170 | /* If we're already fully in the CPU read domain, we're done. */ | |
3171 | if (obj_priv->page_cpu_valid == NULL && | |
3172 | (obj->read_domains & I915_GEM_DOMAIN_CPU) != 0) | |
3173 | return 0; | |
673a394b | 3174 | |
e47c68e9 EA |
3175 | /* Otherwise, create/clear the per-page CPU read domain flag if we're |
3176 | * newly adding I915_GEM_DOMAIN_CPU | |
3177 | */ | |
673a394b | 3178 | if (obj_priv->page_cpu_valid == NULL) { |
9a298b2a EA |
3179 | obj_priv->page_cpu_valid = kzalloc(obj->size / PAGE_SIZE, |
3180 | GFP_KERNEL); | |
e47c68e9 EA |
3181 | if (obj_priv->page_cpu_valid == NULL) |
3182 | return -ENOMEM; | |
3183 | } else if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) | |
3184 | memset(obj_priv->page_cpu_valid, 0, obj->size / PAGE_SIZE); | |
673a394b EA |
3185 | |
3186 | /* Flush the cache on any pages that are still invalid from the CPU's | |
3187 | * perspective. | |
3188 | */ | |
e47c68e9 EA |
3189 | for (i = offset / PAGE_SIZE; i <= (offset + size - 1) / PAGE_SIZE; |
3190 | i++) { | |
673a394b EA |
3191 | if (obj_priv->page_cpu_valid[i]) |
3192 | continue; | |
3193 | ||
856fa198 | 3194 | drm_clflush_pages(obj_priv->pages + i, 1); |
673a394b EA |
3195 | |
3196 | obj_priv->page_cpu_valid[i] = 1; | |
3197 | } | |
3198 | ||
e47c68e9 EA |
3199 | /* It should now be out of any other write domains, and we can update |
3200 | * the domain values for our changes. | |
3201 | */ | |
3202 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0); | |
3203 | ||
1c5d22f7 | 3204 | old_read_domains = obj->read_domains; |
e47c68e9 EA |
3205 | obj->read_domains |= I915_GEM_DOMAIN_CPU; |
3206 | ||
1c5d22f7 CW |
3207 | trace_i915_gem_object_change_domain(obj, |
3208 | old_read_domains, | |
3209 | obj->write_domain); | |
3210 | ||
673a394b EA |
3211 | return 0; |
3212 | } | |
3213 | ||
673a394b EA |
3214 | /** |
3215 | * Pin an object to the GTT and evaluate the relocations landing in it. | |
3216 | */ | |
3217 | static int | |
3218 | i915_gem_object_pin_and_relocate(struct drm_gem_object *obj, | |
3219 | struct drm_file *file_priv, | |
76446cac | 3220 | struct drm_i915_gem_exec_object2 *entry, |
40a5f0de | 3221 | struct drm_i915_gem_relocation_entry *relocs) |
673a394b EA |
3222 | { |
3223 | struct drm_device *dev = obj->dev; | |
0839ccb8 | 3224 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 3225 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b | 3226 | int i, ret; |
0839ccb8 | 3227 | void __iomem *reloc_page; |
76446cac JB |
3228 | bool need_fence; |
3229 | ||
3230 | need_fence = entry->flags & EXEC_OBJECT_NEEDS_FENCE && | |
3231 | obj_priv->tiling_mode != I915_TILING_NONE; | |
3232 | ||
3233 | /* Check fence reg constraints and rebind if necessary */ | |
808b24d6 CW |
3234 | if (need_fence && |
3235 | !i915_gem_object_fence_offset_ok(obj, | |
3236 | obj_priv->tiling_mode)) { | |
3237 | ret = i915_gem_object_unbind(obj); | |
3238 | if (ret) | |
3239 | return ret; | |
3240 | } | |
673a394b EA |
3241 | |
3242 | /* Choose the GTT offset for our buffer and put it there. */ | |
3243 | ret = i915_gem_object_pin(obj, (uint32_t) entry->alignment); | |
3244 | if (ret) | |
3245 | return ret; | |
3246 | ||
76446cac JB |
3247 | /* |
3248 | * Pre-965 chips need a fence register set up in order to | |
3249 | * properly handle blits to/from tiled surfaces. | |
3250 | */ | |
3251 | if (need_fence) { | |
53640e1d | 3252 | ret = i915_gem_object_get_fence_reg(obj, true); |
76446cac | 3253 | if (ret != 0) { |
76446cac JB |
3254 | i915_gem_object_unpin(obj); |
3255 | return ret; | |
3256 | } | |
53640e1d CW |
3257 | |
3258 | dev_priv->fence_regs[obj_priv->fence_reg].gpu = true; | |
76446cac JB |
3259 | } |
3260 | ||
673a394b EA |
3261 | entry->offset = obj_priv->gtt_offset; |
3262 | ||
673a394b EA |
3263 | /* Apply the relocations, using the GTT aperture to avoid cache |
3264 | * flushing requirements. | |
3265 | */ | |
3266 | for (i = 0; i < entry->relocation_count; i++) { | |
40a5f0de | 3267 | struct drm_i915_gem_relocation_entry *reloc= &relocs[i]; |
673a394b EA |
3268 | struct drm_gem_object *target_obj; |
3269 | struct drm_i915_gem_object *target_obj_priv; | |
3043c60c EA |
3270 | uint32_t reloc_val, reloc_offset; |
3271 | uint32_t __iomem *reloc_entry; | |
673a394b | 3272 | |
673a394b | 3273 | target_obj = drm_gem_object_lookup(obj->dev, file_priv, |
40a5f0de | 3274 | reloc->target_handle); |
673a394b EA |
3275 | if (target_obj == NULL) { |
3276 | i915_gem_object_unpin(obj); | |
bf79cb91 | 3277 | return -ENOENT; |
673a394b | 3278 | } |
23010e43 | 3279 | target_obj_priv = to_intel_bo(target_obj); |
673a394b | 3280 | |
8542a0bb CW |
3281 | #if WATCH_RELOC |
3282 | DRM_INFO("%s: obj %p offset %08x target %d " | |
3283 | "read %08x write %08x gtt %08x " | |
3284 | "presumed %08x delta %08x\n", | |
3285 | __func__, | |
3286 | obj, | |
3287 | (int) reloc->offset, | |
3288 | (int) reloc->target_handle, | |
3289 | (int) reloc->read_domains, | |
3290 | (int) reloc->write_domain, | |
3291 | (int) target_obj_priv->gtt_offset, | |
3292 | (int) reloc->presumed_offset, | |
3293 | reloc->delta); | |
3294 | #endif | |
3295 | ||
673a394b EA |
3296 | /* The target buffer should have appeared before us in the |
3297 | * exec_object list, so it should have a GTT space bound by now. | |
3298 | */ | |
3299 | if (target_obj_priv->gtt_space == NULL) { | |
3300 | DRM_ERROR("No GTT space found for object %d\n", | |
40a5f0de | 3301 | reloc->target_handle); |
673a394b EA |
3302 | drm_gem_object_unreference(target_obj); |
3303 | i915_gem_object_unpin(obj); | |
3304 | return -EINVAL; | |
3305 | } | |
3306 | ||
8542a0bb | 3307 | /* Validate that the target is in a valid r/w GPU domain */ |
16edd550 DV |
3308 | if (reloc->write_domain & (reloc->write_domain - 1)) { |
3309 | DRM_ERROR("reloc with multiple write domains: " | |
3310 | "obj %p target %d offset %d " | |
3311 | "read %08x write %08x", | |
3312 | obj, reloc->target_handle, | |
3313 | (int) reloc->offset, | |
3314 | reloc->read_domains, | |
3315 | reloc->write_domain); | |
3316 | return -EINVAL; | |
3317 | } | |
40a5f0de EA |
3318 | if (reloc->write_domain & I915_GEM_DOMAIN_CPU || |
3319 | reloc->read_domains & I915_GEM_DOMAIN_CPU) { | |
e47c68e9 EA |
3320 | DRM_ERROR("reloc with read/write CPU domains: " |
3321 | "obj %p target %d offset %d " | |
3322 | "read %08x write %08x", | |
40a5f0de EA |
3323 | obj, reloc->target_handle, |
3324 | (int) reloc->offset, | |
3325 | reloc->read_domains, | |
3326 | reloc->write_domain); | |
491152b8 CW |
3327 | drm_gem_object_unreference(target_obj); |
3328 | i915_gem_object_unpin(obj); | |
e47c68e9 EA |
3329 | return -EINVAL; |
3330 | } | |
40a5f0de EA |
3331 | if (reloc->write_domain && target_obj->pending_write_domain && |
3332 | reloc->write_domain != target_obj->pending_write_domain) { | |
673a394b EA |
3333 | DRM_ERROR("Write domain conflict: " |
3334 | "obj %p target %d offset %d " | |
3335 | "new %08x old %08x\n", | |
40a5f0de EA |
3336 | obj, reloc->target_handle, |
3337 | (int) reloc->offset, | |
3338 | reloc->write_domain, | |
673a394b EA |
3339 | target_obj->pending_write_domain); |
3340 | drm_gem_object_unreference(target_obj); | |
3341 | i915_gem_object_unpin(obj); | |
3342 | return -EINVAL; | |
3343 | } | |
3344 | ||
40a5f0de EA |
3345 | target_obj->pending_read_domains |= reloc->read_domains; |
3346 | target_obj->pending_write_domain |= reloc->write_domain; | |
673a394b EA |
3347 | |
3348 | /* If the relocation already has the right value in it, no | |
3349 | * more work needs to be done. | |
3350 | */ | |
40a5f0de | 3351 | if (target_obj_priv->gtt_offset == reloc->presumed_offset) { |
673a394b EA |
3352 | drm_gem_object_unreference(target_obj); |
3353 | continue; | |
3354 | } | |
3355 | ||
8542a0bb CW |
3356 | /* Check that the relocation address is valid... */ |
3357 | if (reloc->offset > obj->size - 4) { | |
3358 | DRM_ERROR("Relocation beyond object bounds: " | |
3359 | "obj %p target %d offset %d size %d.\n", | |
3360 | obj, reloc->target_handle, | |
3361 | (int) reloc->offset, (int) obj->size); | |
3362 | drm_gem_object_unreference(target_obj); | |
3363 | i915_gem_object_unpin(obj); | |
3364 | return -EINVAL; | |
3365 | } | |
3366 | if (reloc->offset & 3) { | |
3367 | DRM_ERROR("Relocation not 4-byte aligned: " | |
3368 | "obj %p target %d offset %d.\n", | |
3369 | obj, reloc->target_handle, | |
3370 | (int) reloc->offset); | |
3371 | drm_gem_object_unreference(target_obj); | |
3372 | i915_gem_object_unpin(obj); | |
3373 | return -EINVAL; | |
3374 | } | |
3375 | ||
3376 | /* and points to somewhere within the target object. */ | |
3377 | if (reloc->delta >= target_obj->size) { | |
3378 | DRM_ERROR("Relocation beyond target object bounds: " | |
3379 | "obj %p target %d delta %d size %d.\n", | |
3380 | obj, reloc->target_handle, | |
3381 | (int) reloc->delta, (int) target_obj->size); | |
3382 | drm_gem_object_unreference(target_obj); | |
3383 | i915_gem_object_unpin(obj); | |
3384 | return -EINVAL; | |
3385 | } | |
3386 | ||
2ef7eeaa EA |
3387 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); |
3388 | if (ret != 0) { | |
3389 | drm_gem_object_unreference(target_obj); | |
3390 | i915_gem_object_unpin(obj); | |
3391 | return -EINVAL; | |
673a394b EA |
3392 | } |
3393 | ||
3394 | /* Map the page containing the relocation we're going to | |
3395 | * perform. | |
3396 | */ | |
40a5f0de | 3397 | reloc_offset = obj_priv->gtt_offset + reloc->offset; |
0839ccb8 KP |
3398 | reloc_page = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping, |
3399 | (reloc_offset & | |
fca3ec01 CW |
3400 | ~(PAGE_SIZE - 1)), |
3401 | KM_USER0); | |
3043c60c | 3402 | reloc_entry = (uint32_t __iomem *)(reloc_page + |
0839ccb8 | 3403 | (reloc_offset & (PAGE_SIZE - 1))); |
40a5f0de | 3404 | reloc_val = target_obj_priv->gtt_offset + reloc->delta; |
673a394b | 3405 | |
673a394b | 3406 | writel(reloc_val, reloc_entry); |
fca3ec01 | 3407 | io_mapping_unmap_atomic(reloc_page, KM_USER0); |
673a394b | 3408 | |
40a5f0de EA |
3409 | /* The updated presumed offset for this entry will be |
3410 | * copied back out to the user. | |
673a394b | 3411 | */ |
40a5f0de | 3412 | reloc->presumed_offset = target_obj_priv->gtt_offset; |
673a394b EA |
3413 | |
3414 | drm_gem_object_unreference(target_obj); | |
3415 | } | |
3416 | ||
673a394b EA |
3417 | return 0; |
3418 | } | |
3419 | ||
673a394b EA |
3420 | /* Throttle our rendering by waiting until the ring has completed our requests |
3421 | * emitted over 20 msec ago. | |
3422 | * | |
b962442e EA |
3423 | * Note that if we were to use the current jiffies each time around the loop, |
3424 | * we wouldn't escape the function with any frames outstanding if the time to | |
3425 | * render a frame was over 20ms. | |
3426 | * | |
673a394b EA |
3427 | * This should get us reasonable parallelism between CPU and GPU but also |
3428 | * relatively low latency when blocking on a particular request to finish. | |
3429 | */ | |
3430 | static int | |
f787a5f5 | 3431 | i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file) |
673a394b | 3432 | { |
f787a5f5 CW |
3433 | struct drm_i915_private *dev_priv = dev->dev_private; |
3434 | struct drm_i915_file_private *file_priv = file->driver_priv; | |
b962442e | 3435 | unsigned long recent_enough = jiffies - msecs_to_jiffies(20); |
f787a5f5 CW |
3436 | struct drm_i915_gem_request *request; |
3437 | struct intel_ring_buffer *ring = NULL; | |
3438 | u32 seqno = 0; | |
3439 | int ret; | |
673a394b | 3440 | |
1c25595f | 3441 | spin_lock(&file_priv->mm.lock); |
f787a5f5 | 3442 | list_for_each_entry(request, &file_priv->mm.request_list, client_list) { |
b962442e EA |
3443 | if (time_after_eq(request->emitted_jiffies, recent_enough)) |
3444 | break; | |
3445 | ||
f787a5f5 CW |
3446 | ring = request->ring; |
3447 | seqno = request->seqno; | |
b962442e | 3448 | } |
1c25595f | 3449 | spin_unlock(&file_priv->mm.lock); |
f787a5f5 CW |
3450 | |
3451 | if (seqno == 0) | |
3452 | return 0; | |
3453 | ||
3454 | ret = 0; | |
3455 | if (!i915_seqno_passed(ring->get_seqno(dev, ring), seqno)) { | |
3456 | /* And wait for the seqno passing without holding any locks and | |
3457 | * causing extra latency for others. This is safe as the irq | |
3458 | * generation is designed to be run atomically and so is | |
3459 | * lockless. | |
3460 | */ | |
3461 | ring->user_irq_get(dev, ring); | |
3462 | ret = wait_event_interruptible(ring->irq_queue, | |
3463 | i915_seqno_passed(ring->get_seqno(dev, ring), seqno) | |
3464 | || atomic_read(&dev_priv->mm.wedged)); | |
3465 | ring->user_irq_put(dev, ring); | |
3466 | ||
3467 | if (ret == 0 && atomic_read(&dev_priv->mm.wedged)) | |
3468 | ret = -EIO; | |
3469 | } | |
3470 | ||
3471 | if (ret == 0) | |
3472 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, 0); | |
b962442e | 3473 | |
673a394b EA |
3474 | return ret; |
3475 | } | |
3476 | ||
40a5f0de | 3477 | static int |
76446cac | 3478 | i915_gem_get_relocs_from_user(struct drm_i915_gem_exec_object2 *exec_list, |
40a5f0de EA |
3479 | uint32_t buffer_count, |
3480 | struct drm_i915_gem_relocation_entry **relocs) | |
3481 | { | |
3482 | uint32_t reloc_count = 0, reloc_index = 0, i; | |
3483 | int ret; | |
3484 | ||
3485 | *relocs = NULL; | |
3486 | for (i = 0; i < buffer_count; i++) { | |
3487 | if (reloc_count + exec_list[i].relocation_count < reloc_count) | |
3488 | return -EINVAL; | |
3489 | reloc_count += exec_list[i].relocation_count; | |
3490 | } | |
3491 | ||
8e7d2b2c | 3492 | *relocs = drm_calloc_large(reloc_count, sizeof(**relocs)); |
76446cac JB |
3493 | if (*relocs == NULL) { |
3494 | DRM_ERROR("failed to alloc relocs, count %d\n", reloc_count); | |
40a5f0de | 3495 | return -ENOMEM; |
76446cac | 3496 | } |
40a5f0de EA |
3497 | |
3498 | for (i = 0; i < buffer_count; i++) { | |
3499 | struct drm_i915_gem_relocation_entry __user *user_relocs; | |
3500 | ||
3501 | user_relocs = (void __user *)(uintptr_t)exec_list[i].relocs_ptr; | |
3502 | ||
3503 | ret = copy_from_user(&(*relocs)[reloc_index], | |
3504 | user_relocs, | |
3505 | exec_list[i].relocation_count * | |
3506 | sizeof(**relocs)); | |
3507 | if (ret != 0) { | |
8e7d2b2c | 3508 | drm_free_large(*relocs); |
40a5f0de | 3509 | *relocs = NULL; |
2bc43b5c | 3510 | return -EFAULT; |
40a5f0de EA |
3511 | } |
3512 | ||
3513 | reloc_index += exec_list[i].relocation_count; | |
3514 | } | |
3515 | ||
2bc43b5c | 3516 | return 0; |
40a5f0de EA |
3517 | } |
3518 | ||
3519 | static int | |
76446cac | 3520 | i915_gem_put_relocs_to_user(struct drm_i915_gem_exec_object2 *exec_list, |
40a5f0de EA |
3521 | uint32_t buffer_count, |
3522 | struct drm_i915_gem_relocation_entry *relocs) | |
3523 | { | |
3524 | uint32_t reloc_count = 0, i; | |
2bc43b5c | 3525 | int ret = 0; |
40a5f0de | 3526 | |
93533c29 CW |
3527 | if (relocs == NULL) |
3528 | return 0; | |
3529 | ||
40a5f0de EA |
3530 | for (i = 0; i < buffer_count; i++) { |
3531 | struct drm_i915_gem_relocation_entry __user *user_relocs; | |
2bc43b5c | 3532 | int unwritten; |
40a5f0de EA |
3533 | |
3534 | user_relocs = (void __user *)(uintptr_t)exec_list[i].relocs_ptr; | |
3535 | ||
2bc43b5c FM |
3536 | unwritten = copy_to_user(user_relocs, |
3537 | &relocs[reloc_count], | |
3538 | exec_list[i].relocation_count * | |
3539 | sizeof(*relocs)); | |
3540 | ||
3541 | if (unwritten) { | |
3542 | ret = -EFAULT; | |
3543 | goto err; | |
40a5f0de EA |
3544 | } |
3545 | ||
3546 | reloc_count += exec_list[i].relocation_count; | |
3547 | } | |
3548 | ||
2bc43b5c | 3549 | err: |
8e7d2b2c | 3550 | drm_free_large(relocs); |
40a5f0de EA |
3551 | |
3552 | return ret; | |
3553 | } | |
3554 | ||
83d60795 | 3555 | static int |
76446cac | 3556 | i915_gem_check_execbuffer (struct drm_i915_gem_execbuffer2 *exec, |
83d60795 CW |
3557 | uint64_t exec_offset) |
3558 | { | |
3559 | uint32_t exec_start, exec_len; | |
3560 | ||
3561 | exec_start = (uint32_t) exec_offset + exec->batch_start_offset; | |
3562 | exec_len = (uint32_t) exec->batch_len; | |
3563 | ||
3564 | if ((exec_start | exec_len) & 0x7) | |
3565 | return -EINVAL; | |
3566 | ||
3567 | if (!exec_start) | |
3568 | return -EINVAL; | |
3569 | ||
3570 | return 0; | |
3571 | } | |
3572 | ||
e6c3a2a6 | 3573 | static int |
6b95a207 KH |
3574 | i915_gem_wait_for_pending_flip(struct drm_device *dev, |
3575 | struct drm_gem_object **object_list, | |
3576 | int count) | |
3577 | { | |
3578 | drm_i915_private_t *dev_priv = dev->dev_private; | |
3579 | struct drm_i915_gem_object *obj_priv; | |
3580 | DEFINE_WAIT(wait); | |
3581 | int i, ret = 0; | |
3582 | ||
3583 | for (;;) { | |
3584 | prepare_to_wait(&dev_priv->pending_flip_queue, | |
3585 | &wait, TASK_INTERRUPTIBLE); | |
3586 | for (i = 0; i < count; i++) { | |
23010e43 | 3587 | obj_priv = to_intel_bo(object_list[i]); |
6b95a207 KH |
3588 | if (atomic_read(&obj_priv->pending_flip) > 0) |
3589 | break; | |
3590 | } | |
3591 | if (i == count) | |
3592 | break; | |
3593 | ||
3594 | if (!signal_pending(current)) { | |
3595 | mutex_unlock(&dev->struct_mutex); | |
3596 | schedule(); | |
3597 | mutex_lock(&dev->struct_mutex); | |
3598 | continue; | |
3599 | } | |
3600 | ret = -ERESTARTSYS; | |
3601 | break; | |
3602 | } | |
3603 | finish_wait(&dev_priv->pending_flip_queue, &wait); | |
3604 | ||
3605 | return ret; | |
3606 | } | |
3607 | ||
8dc5d147 | 3608 | static int |
76446cac JB |
3609 | i915_gem_do_execbuffer(struct drm_device *dev, void *data, |
3610 | struct drm_file *file_priv, | |
3611 | struct drm_i915_gem_execbuffer2 *args, | |
3612 | struct drm_i915_gem_exec_object2 *exec_list) | |
673a394b EA |
3613 | { |
3614 | drm_i915_private_t *dev_priv = dev->dev_private; | |
673a394b EA |
3615 | struct drm_gem_object **object_list = NULL; |
3616 | struct drm_gem_object *batch_obj; | |
b70d11da | 3617 | struct drm_i915_gem_object *obj_priv; |
201361a5 | 3618 | struct drm_clip_rect *cliprects = NULL; |
93533c29 | 3619 | struct drm_i915_gem_relocation_entry *relocs = NULL; |
8dc5d147 | 3620 | struct drm_i915_gem_request *request = NULL; |
30dbf0c0 | 3621 | int ret, ret2, i, pinned = 0; |
673a394b | 3622 | uint64_t exec_offset; |
5c12a07e | 3623 | uint32_t reloc_index; |
6b95a207 | 3624 | int pin_tries, flips; |
673a394b | 3625 | |
852835f3 ZN |
3626 | struct intel_ring_buffer *ring = NULL; |
3627 | ||
30dbf0c0 CW |
3628 | ret = i915_gem_check_is_wedged(dev); |
3629 | if (ret) | |
3630 | return ret; | |
3631 | ||
673a394b EA |
3632 | #if WATCH_EXEC |
3633 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", | |
3634 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); | |
3635 | #endif | |
d1b851fc ZN |
3636 | if (args->flags & I915_EXEC_BSD) { |
3637 | if (!HAS_BSD(dev)) { | |
3638 | DRM_ERROR("execbuf with wrong flag\n"); | |
3639 | return -EINVAL; | |
3640 | } | |
3641 | ring = &dev_priv->bsd_ring; | |
3642 | } else { | |
3643 | ring = &dev_priv->render_ring; | |
3644 | } | |
3645 | ||
4f481ed2 EA |
3646 | if (args->buffer_count < 1) { |
3647 | DRM_ERROR("execbuf with %d buffers\n", args->buffer_count); | |
3648 | return -EINVAL; | |
3649 | } | |
c8e0f93a | 3650 | object_list = drm_malloc_ab(sizeof(*object_list), args->buffer_count); |
76446cac JB |
3651 | if (object_list == NULL) { |
3652 | DRM_ERROR("Failed to allocate object list for %d buffers\n", | |
673a394b EA |
3653 | args->buffer_count); |
3654 | ret = -ENOMEM; | |
3655 | goto pre_mutex_err; | |
3656 | } | |
673a394b | 3657 | |
201361a5 | 3658 | if (args->num_cliprects != 0) { |
9a298b2a EA |
3659 | cliprects = kcalloc(args->num_cliprects, sizeof(*cliprects), |
3660 | GFP_KERNEL); | |
a40e8d31 OA |
3661 | if (cliprects == NULL) { |
3662 | ret = -ENOMEM; | |
201361a5 | 3663 | goto pre_mutex_err; |
a40e8d31 | 3664 | } |
201361a5 EA |
3665 | |
3666 | ret = copy_from_user(cliprects, | |
3667 | (struct drm_clip_rect __user *) | |
3668 | (uintptr_t) args->cliprects_ptr, | |
3669 | sizeof(*cliprects) * args->num_cliprects); | |
3670 | if (ret != 0) { | |
3671 | DRM_ERROR("copy %d cliprects failed: %d\n", | |
3672 | args->num_cliprects, ret); | |
c877cdce | 3673 | ret = -EFAULT; |
201361a5 EA |
3674 | goto pre_mutex_err; |
3675 | } | |
3676 | } | |
3677 | ||
8dc5d147 CW |
3678 | request = kzalloc(sizeof(*request), GFP_KERNEL); |
3679 | if (request == NULL) { | |
3680 | ret = -ENOMEM; | |
3681 | goto pre_mutex_err; | |
3682 | } | |
3683 | ||
40a5f0de EA |
3684 | ret = i915_gem_get_relocs_from_user(exec_list, args->buffer_count, |
3685 | &relocs); | |
3686 | if (ret != 0) | |
3687 | goto pre_mutex_err; | |
3688 | ||
76c1dec1 CW |
3689 | ret = i915_mutex_lock_interruptible(dev); |
3690 | if (ret) | |
3691 | goto pre_mutex_err; | |
673a394b EA |
3692 | |
3693 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
3694 | ||
673a394b | 3695 | if (dev_priv->mm.suspended) { |
673a394b | 3696 | mutex_unlock(&dev->struct_mutex); |
a198bc80 CW |
3697 | ret = -EBUSY; |
3698 | goto pre_mutex_err; | |
673a394b EA |
3699 | } |
3700 | ||
ac94a962 | 3701 | /* Look up object handles */ |
6b95a207 | 3702 | flips = 0; |
673a394b EA |
3703 | for (i = 0; i < args->buffer_count; i++) { |
3704 | object_list[i] = drm_gem_object_lookup(dev, file_priv, | |
3705 | exec_list[i].handle); | |
3706 | if (object_list[i] == NULL) { | |
3707 | DRM_ERROR("Invalid object handle %d at index %d\n", | |
3708 | exec_list[i].handle, i); | |
0ce907f8 CW |
3709 | /* prevent error path from reading uninitialized data */ |
3710 | args->buffer_count = i + 1; | |
bf79cb91 | 3711 | ret = -ENOENT; |
673a394b EA |
3712 | goto err; |
3713 | } | |
b70d11da | 3714 | |
23010e43 | 3715 | obj_priv = to_intel_bo(object_list[i]); |
b70d11da KH |
3716 | if (obj_priv->in_execbuffer) { |
3717 | DRM_ERROR("Object %p appears more than once in object list\n", | |
3718 | object_list[i]); | |
0ce907f8 CW |
3719 | /* prevent error path from reading uninitialized data */ |
3720 | args->buffer_count = i + 1; | |
bf79cb91 | 3721 | ret = -EINVAL; |
b70d11da KH |
3722 | goto err; |
3723 | } | |
3724 | obj_priv->in_execbuffer = true; | |
6b95a207 KH |
3725 | flips += atomic_read(&obj_priv->pending_flip); |
3726 | } | |
3727 | ||
3728 | if (flips > 0) { | |
3729 | ret = i915_gem_wait_for_pending_flip(dev, object_list, | |
3730 | args->buffer_count); | |
3731 | if (ret) | |
3732 | goto err; | |
ac94a962 | 3733 | } |
673a394b | 3734 | |
ac94a962 KP |
3735 | /* Pin and relocate */ |
3736 | for (pin_tries = 0; ; pin_tries++) { | |
3737 | ret = 0; | |
40a5f0de EA |
3738 | reloc_index = 0; |
3739 | ||
ac94a962 KP |
3740 | for (i = 0; i < args->buffer_count; i++) { |
3741 | object_list[i]->pending_read_domains = 0; | |
3742 | object_list[i]->pending_write_domain = 0; | |
3743 | ret = i915_gem_object_pin_and_relocate(object_list[i], | |
3744 | file_priv, | |
40a5f0de EA |
3745 | &exec_list[i], |
3746 | &relocs[reloc_index]); | |
ac94a962 KP |
3747 | if (ret) |
3748 | break; | |
3749 | pinned = i + 1; | |
40a5f0de | 3750 | reloc_index += exec_list[i].relocation_count; |
ac94a962 KP |
3751 | } |
3752 | /* success */ | |
3753 | if (ret == 0) | |
3754 | break; | |
3755 | ||
3756 | /* error other than GTT full, or we've already tried again */ | |
2939e1f5 | 3757 | if (ret != -ENOSPC || pin_tries >= 1) { |
07f73f69 CW |
3758 | if (ret != -ERESTARTSYS) { |
3759 | unsigned long long total_size = 0; | |
3d1cc470 CW |
3760 | int num_fences = 0; |
3761 | for (i = 0; i < args->buffer_count; i++) { | |
43b27f40 | 3762 | obj_priv = to_intel_bo(object_list[i]); |
3d1cc470 | 3763 | |
07f73f69 | 3764 | total_size += object_list[i]->size; |
3d1cc470 CW |
3765 | num_fences += |
3766 | exec_list[i].flags & EXEC_OBJECT_NEEDS_FENCE && | |
3767 | obj_priv->tiling_mode != I915_TILING_NONE; | |
3768 | } | |
3769 | DRM_ERROR("Failed to pin buffer %d of %d, total %llu bytes, %d fences: %d\n", | |
07f73f69 | 3770 | pinned+1, args->buffer_count, |
3d1cc470 CW |
3771 | total_size, num_fences, |
3772 | ret); | |
07f73f69 CW |
3773 | DRM_ERROR("%d objects [%d pinned], " |
3774 | "%d object bytes [%d pinned], " | |
3775 | "%d/%d gtt bytes\n", | |
3776 | atomic_read(&dev->object_count), | |
3777 | atomic_read(&dev->pin_count), | |
3778 | atomic_read(&dev->object_memory), | |
3779 | atomic_read(&dev->pin_memory), | |
3780 | atomic_read(&dev->gtt_memory), | |
3781 | dev->gtt_total); | |
3782 | } | |
673a394b EA |
3783 | goto err; |
3784 | } | |
ac94a962 KP |
3785 | |
3786 | /* unpin all of our buffers */ | |
3787 | for (i = 0; i < pinned; i++) | |
3788 | i915_gem_object_unpin(object_list[i]); | |
b1177636 | 3789 | pinned = 0; |
ac94a962 KP |
3790 | |
3791 | /* evict everyone we can from the aperture */ | |
3792 | ret = i915_gem_evict_everything(dev); | |
07f73f69 | 3793 | if (ret && ret != -ENOSPC) |
ac94a962 | 3794 | goto err; |
673a394b EA |
3795 | } |
3796 | ||
3797 | /* Set the pending read domains for the batch buffer to COMMAND */ | |
3798 | batch_obj = object_list[args->buffer_count-1]; | |
5f26a2c7 CW |
3799 | if (batch_obj->pending_write_domain) { |
3800 | DRM_ERROR("Attempting to use self-modifying batch buffer\n"); | |
3801 | ret = -EINVAL; | |
3802 | goto err; | |
3803 | } | |
3804 | batch_obj->pending_read_domains |= I915_GEM_DOMAIN_COMMAND; | |
673a394b | 3805 | |
83d60795 CW |
3806 | /* Sanity check the batch buffer, prior to moving objects */ |
3807 | exec_offset = exec_list[args->buffer_count - 1].offset; | |
3808 | ret = i915_gem_check_execbuffer (args, exec_offset); | |
3809 | if (ret != 0) { | |
3810 | DRM_ERROR("execbuf with invalid offset/length\n"); | |
3811 | goto err; | |
3812 | } | |
3813 | ||
673a394b EA |
3814 | i915_verify_inactive(dev, __FILE__, __LINE__); |
3815 | ||
646f0f6e KP |
3816 | /* Zero the global flush/invalidate flags. These |
3817 | * will be modified as new domains are computed | |
3818 | * for each object | |
3819 | */ | |
3820 | dev->invalidate_domains = 0; | |
3821 | dev->flush_domains = 0; | |
9220434a | 3822 | dev_priv->mm.flush_rings = 0; |
646f0f6e | 3823 | |
673a394b EA |
3824 | for (i = 0; i < args->buffer_count; i++) { |
3825 | struct drm_gem_object *obj = object_list[i]; | |
673a394b | 3826 | |
646f0f6e | 3827 | /* Compute new gpu domains and update invalidate/flush */ |
8b0e378a | 3828 | i915_gem_object_set_to_gpu_domain(obj); |
673a394b EA |
3829 | } |
3830 | ||
3831 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
3832 | ||
646f0f6e KP |
3833 | if (dev->invalidate_domains | dev->flush_domains) { |
3834 | #if WATCH_EXEC | |
3835 | DRM_INFO("%s: invalidate_domains %08x flush_domains %08x\n", | |
3836 | __func__, | |
3837 | dev->invalidate_domains, | |
3838 | dev->flush_domains); | |
3839 | #endif | |
c78ec30b | 3840 | i915_gem_flush(dev, file_priv, |
646f0f6e | 3841 | dev->invalidate_domains, |
9220434a CW |
3842 | dev->flush_domains, |
3843 | dev_priv->mm.flush_rings); | |
a6910434 DV |
3844 | } |
3845 | ||
efbeed96 EA |
3846 | for (i = 0; i < args->buffer_count; i++) { |
3847 | struct drm_gem_object *obj = object_list[i]; | |
23010e43 | 3848 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
1c5d22f7 | 3849 | uint32_t old_write_domain = obj->write_domain; |
efbeed96 EA |
3850 | |
3851 | obj->write_domain = obj->pending_write_domain; | |
99fcb766 DV |
3852 | if (obj->write_domain) |
3853 | list_move_tail(&obj_priv->gpu_write_list, | |
3854 | &dev_priv->mm.gpu_write_list); | |
3855 | else | |
3856 | list_del_init(&obj_priv->gpu_write_list); | |
3857 | ||
1c5d22f7 CW |
3858 | trace_i915_gem_object_change_domain(obj, |
3859 | obj->read_domains, | |
3860 | old_write_domain); | |
efbeed96 EA |
3861 | } |
3862 | ||
673a394b EA |
3863 | i915_verify_inactive(dev, __FILE__, __LINE__); |
3864 | ||
3865 | #if WATCH_COHERENCY | |
3866 | for (i = 0; i < args->buffer_count; i++) { | |
3867 | i915_gem_object_check_coherency(object_list[i], | |
3868 | exec_list[i].handle); | |
3869 | } | |
3870 | #endif | |
3871 | ||
673a394b | 3872 | #if WATCH_EXEC |
6911a9b8 | 3873 | i915_gem_dump_object(batch_obj, |
673a394b EA |
3874 | args->batch_len, |
3875 | __func__, | |
3876 | ~0); | |
3877 | #endif | |
3878 | ||
673a394b | 3879 | /* Exec the batchbuffer */ |
852835f3 ZN |
3880 | ret = ring->dispatch_gem_execbuffer(dev, ring, args, |
3881 | cliprects, exec_offset); | |
673a394b EA |
3882 | if (ret) { |
3883 | DRM_ERROR("dispatch failed %d\n", ret); | |
3884 | goto err; | |
3885 | } | |
3886 | ||
3887 | /* | |
3888 | * Ensure that the commands in the batch buffer are | |
3889 | * finished before the interrupt fires | |
3890 | */ | |
8a1a49f9 | 3891 | i915_retire_commands(dev, ring); |
673a394b EA |
3892 | |
3893 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
3894 | ||
617dbe27 DV |
3895 | for (i = 0; i < args->buffer_count; i++) { |
3896 | struct drm_gem_object *obj = object_list[i]; | |
3897 | obj_priv = to_intel_bo(obj); | |
3898 | ||
3899 | i915_gem_object_move_to_active(obj, ring); | |
617dbe27 | 3900 | } |
a56ba56c | 3901 | |
5c12a07e | 3902 | i915_add_request(dev, file_priv, request, ring); |
8dc5d147 | 3903 | request = NULL; |
673a394b | 3904 | |
673a394b EA |
3905 | i915_verify_inactive(dev, __FILE__, __LINE__); |
3906 | ||
673a394b | 3907 | err: |
aad87dff JL |
3908 | for (i = 0; i < pinned; i++) |
3909 | i915_gem_object_unpin(object_list[i]); | |
3910 | ||
b70d11da KH |
3911 | for (i = 0; i < args->buffer_count; i++) { |
3912 | if (object_list[i]) { | |
23010e43 | 3913 | obj_priv = to_intel_bo(object_list[i]); |
b70d11da KH |
3914 | obj_priv->in_execbuffer = false; |
3915 | } | |
aad87dff | 3916 | drm_gem_object_unreference(object_list[i]); |
b70d11da | 3917 | } |
673a394b | 3918 | |
673a394b EA |
3919 | mutex_unlock(&dev->struct_mutex); |
3920 | ||
93533c29 | 3921 | pre_mutex_err: |
40a5f0de EA |
3922 | /* Copy the updated relocations out regardless of current error |
3923 | * state. Failure to update the relocs would mean that the next | |
3924 | * time userland calls execbuf, it would do so with presumed offset | |
3925 | * state that didn't match the actual object state. | |
3926 | */ | |
3927 | ret2 = i915_gem_put_relocs_to_user(exec_list, args->buffer_count, | |
3928 | relocs); | |
3929 | if (ret2 != 0) { | |
3930 | DRM_ERROR("Failed to copy relocations back out: %d\n", ret2); | |
3931 | ||
3932 | if (ret == 0) | |
3933 | ret = ret2; | |
3934 | } | |
3935 | ||
8e7d2b2c | 3936 | drm_free_large(object_list); |
9a298b2a | 3937 | kfree(cliprects); |
8dc5d147 | 3938 | kfree(request); |
673a394b EA |
3939 | |
3940 | return ret; | |
3941 | } | |
3942 | ||
76446cac JB |
3943 | /* |
3944 | * Legacy execbuffer just creates an exec2 list from the original exec object | |
3945 | * list array and passes it to the real function. | |
3946 | */ | |
3947 | int | |
3948 | i915_gem_execbuffer(struct drm_device *dev, void *data, | |
3949 | struct drm_file *file_priv) | |
3950 | { | |
3951 | struct drm_i915_gem_execbuffer *args = data; | |
3952 | struct drm_i915_gem_execbuffer2 exec2; | |
3953 | struct drm_i915_gem_exec_object *exec_list = NULL; | |
3954 | struct drm_i915_gem_exec_object2 *exec2_list = NULL; | |
3955 | int ret, i; | |
3956 | ||
3957 | #if WATCH_EXEC | |
3958 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", | |
3959 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); | |
3960 | #endif | |
3961 | ||
3962 | if (args->buffer_count < 1) { | |
3963 | DRM_ERROR("execbuf with %d buffers\n", args->buffer_count); | |
3964 | return -EINVAL; | |
3965 | } | |
3966 | ||
3967 | /* Copy in the exec list from userland */ | |
3968 | exec_list = drm_malloc_ab(sizeof(*exec_list), args->buffer_count); | |
3969 | exec2_list = drm_malloc_ab(sizeof(*exec2_list), args->buffer_count); | |
3970 | if (exec_list == NULL || exec2_list == NULL) { | |
3971 | DRM_ERROR("Failed to allocate exec list for %d buffers\n", | |
3972 | args->buffer_count); | |
3973 | drm_free_large(exec_list); | |
3974 | drm_free_large(exec2_list); | |
3975 | return -ENOMEM; | |
3976 | } | |
3977 | ret = copy_from_user(exec_list, | |
3978 | (struct drm_i915_relocation_entry __user *) | |
3979 | (uintptr_t) args->buffers_ptr, | |
3980 | sizeof(*exec_list) * args->buffer_count); | |
3981 | if (ret != 0) { | |
3982 | DRM_ERROR("copy %d exec entries failed %d\n", | |
3983 | args->buffer_count, ret); | |
3984 | drm_free_large(exec_list); | |
3985 | drm_free_large(exec2_list); | |
3986 | return -EFAULT; | |
3987 | } | |
3988 | ||
3989 | for (i = 0; i < args->buffer_count; i++) { | |
3990 | exec2_list[i].handle = exec_list[i].handle; | |
3991 | exec2_list[i].relocation_count = exec_list[i].relocation_count; | |
3992 | exec2_list[i].relocs_ptr = exec_list[i].relocs_ptr; | |
3993 | exec2_list[i].alignment = exec_list[i].alignment; | |
3994 | exec2_list[i].offset = exec_list[i].offset; | |
a6c45cf0 | 3995 | if (INTEL_INFO(dev)->gen < 4) |
76446cac JB |
3996 | exec2_list[i].flags = EXEC_OBJECT_NEEDS_FENCE; |
3997 | else | |
3998 | exec2_list[i].flags = 0; | |
3999 | } | |
4000 | ||
4001 | exec2.buffers_ptr = args->buffers_ptr; | |
4002 | exec2.buffer_count = args->buffer_count; | |
4003 | exec2.batch_start_offset = args->batch_start_offset; | |
4004 | exec2.batch_len = args->batch_len; | |
4005 | exec2.DR1 = args->DR1; | |
4006 | exec2.DR4 = args->DR4; | |
4007 | exec2.num_cliprects = args->num_cliprects; | |
4008 | exec2.cliprects_ptr = args->cliprects_ptr; | |
852835f3 | 4009 | exec2.flags = I915_EXEC_RENDER; |
76446cac JB |
4010 | |
4011 | ret = i915_gem_do_execbuffer(dev, data, file_priv, &exec2, exec2_list); | |
4012 | if (!ret) { | |
4013 | /* Copy the new buffer offsets back to the user's exec list. */ | |
4014 | for (i = 0; i < args->buffer_count; i++) | |
4015 | exec_list[i].offset = exec2_list[i].offset; | |
4016 | /* ... and back out to userspace */ | |
4017 | ret = copy_to_user((struct drm_i915_relocation_entry __user *) | |
4018 | (uintptr_t) args->buffers_ptr, | |
4019 | exec_list, | |
4020 | sizeof(*exec_list) * args->buffer_count); | |
4021 | if (ret) { | |
4022 | ret = -EFAULT; | |
4023 | DRM_ERROR("failed to copy %d exec entries " | |
4024 | "back to user (%d)\n", | |
4025 | args->buffer_count, ret); | |
4026 | } | |
76446cac JB |
4027 | } |
4028 | ||
4029 | drm_free_large(exec_list); | |
4030 | drm_free_large(exec2_list); | |
4031 | return ret; | |
4032 | } | |
4033 | ||
4034 | int | |
4035 | i915_gem_execbuffer2(struct drm_device *dev, void *data, | |
4036 | struct drm_file *file_priv) | |
4037 | { | |
4038 | struct drm_i915_gem_execbuffer2 *args = data; | |
4039 | struct drm_i915_gem_exec_object2 *exec2_list = NULL; | |
4040 | int ret; | |
4041 | ||
4042 | #if WATCH_EXEC | |
4043 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", | |
4044 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); | |
4045 | #endif | |
4046 | ||
4047 | if (args->buffer_count < 1) { | |
4048 | DRM_ERROR("execbuf2 with %d buffers\n", args->buffer_count); | |
4049 | return -EINVAL; | |
4050 | } | |
4051 | ||
4052 | exec2_list = drm_malloc_ab(sizeof(*exec2_list), args->buffer_count); | |
4053 | if (exec2_list == NULL) { | |
4054 | DRM_ERROR("Failed to allocate exec list for %d buffers\n", | |
4055 | args->buffer_count); | |
4056 | return -ENOMEM; | |
4057 | } | |
4058 | ret = copy_from_user(exec2_list, | |
4059 | (struct drm_i915_relocation_entry __user *) | |
4060 | (uintptr_t) args->buffers_ptr, | |
4061 | sizeof(*exec2_list) * args->buffer_count); | |
4062 | if (ret != 0) { | |
4063 | DRM_ERROR("copy %d exec entries failed %d\n", | |
4064 | args->buffer_count, ret); | |
4065 | drm_free_large(exec2_list); | |
4066 | return -EFAULT; | |
4067 | } | |
4068 | ||
4069 | ret = i915_gem_do_execbuffer(dev, data, file_priv, args, exec2_list); | |
4070 | if (!ret) { | |
4071 | /* Copy the new buffer offsets back to the user's exec list. */ | |
4072 | ret = copy_to_user((struct drm_i915_relocation_entry __user *) | |
4073 | (uintptr_t) args->buffers_ptr, | |
4074 | exec2_list, | |
4075 | sizeof(*exec2_list) * args->buffer_count); | |
4076 | if (ret) { | |
4077 | ret = -EFAULT; | |
4078 | DRM_ERROR("failed to copy %d exec entries " | |
4079 | "back to user (%d)\n", | |
4080 | args->buffer_count, ret); | |
4081 | } | |
4082 | } | |
4083 | ||
4084 | drm_free_large(exec2_list); | |
4085 | return ret; | |
4086 | } | |
4087 | ||
673a394b EA |
4088 | int |
4089 | i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment) | |
4090 | { | |
4091 | struct drm_device *dev = obj->dev; | |
f13d3f73 | 4092 | struct drm_i915_private *dev_priv = dev->dev_private; |
23010e43 | 4093 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
4094 | int ret; |
4095 | ||
778c3544 DV |
4096 | BUG_ON(obj_priv->pin_count == DRM_I915_GEM_OBJECT_MAX_PIN_COUNT); |
4097 | ||
673a394b | 4098 | i915_verify_inactive(dev, __FILE__, __LINE__); |
ac0c6b5a CW |
4099 | |
4100 | if (obj_priv->gtt_space != NULL) { | |
4101 | if (alignment == 0) | |
4102 | alignment = i915_gem_get_gtt_alignment(obj); | |
4103 | if (obj_priv->gtt_offset & (alignment - 1)) { | |
ae7d49d8 CW |
4104 | WARN(obj_priv->pin_count, |
4105 | "bo is already pinned with incorrect alignment:" | |
4106 | " offset=%x, req.alignment=%x\n", | |
4107 | obj_priv->gtt_offset, alignment); | |
ac0c6b5a CW |
4108 | ret = i915_gem_object_unbind(obj); |
4109 | if (ret) | |
4110 | return ret; | |
4111 | } | |
4112 | } | |
4113 | ||
673a394b EA |
4114 | if (obj_priv->gtt_space == NULL) { |
4115 | ret = i915_gem_object_bind_to_gtt(obj, alignment); | |
9731129c | 4116 | if (ret) |
673a394b | 4117 | return ret; |
22c344e9 | 4118 | } |
76446cac | 4119 | |
673a394b EA |
4120 | obj_priv->pin_count++; |
4121 | ||
4122 | /* If the object is not active and not pending a flush, | |
4123 | * remove it from the inactive list | |
4124 | */ | |
4125 | if (obj_priv->pin_count == 1) { | |
4126 | atomic_inc(&dev->pin_count); | |
4127 | atomic_add(obj->size, &dev->pin_memory); | |
f13d3f73 CW |
4128 | if (!obj_priv->active) |
4129 | list_move_tail(&obj_priv->list, | |
4130 | &dev_priv->mm.pinned_list); | |
673a394b EA |
4131 | } |
4132 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
4133 | ||
4134 | return 0; | |
4135 | } | |
4136 | ||
4137 | void | |
4138 | i915_gem_object_unpin(struct drm_gem_object *obj) | |
4139 | { | |
4140 | struct drm_device *dev = obj->dev; | |
4141 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 4142 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
4143 | |
4144 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
4145 | obj_priv->pin_count--; | |
4146 | BUG_ON(obj_priv->pin_count < 0); | |
4147 | BUG_ON(obj_priv->gtt_space == NULL); | |
4148 | ||
4149 | /* If the object is no longer pinned, and is | |
4150 | * neither active nor being flushed, then stick it on | |
4151 | * the inactive list | |
4152 | */ | |
4153 | if (obj_priv->pin_count == 0) { | |
f13d3f73 | 4154 | if (!obj_priv->active) |
673a394b EA |
4155 | list_move_tail(&obj_priv->list, |
4156 | &dev_priv->mm.inactive_list); | |
4157 | atomic_dec(&dev->pin_count); | |
4158 | atomic_sub(obj->size, &dev->pin_memory); | |
4159 | } | |
4160 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
4161 | } | |
4162 | ||
4163 | int | |
4164 | i915_gem_pin_ioctl(struct drm_device *dev, void *data, | |
4165 | struct drm_file *file_priv) | |
4166 | { | |
4167 | struct drm_i915_gem_pin *args = data; | |
4168 | struct drm_gem_object *obj; | |
4169 | struct drm_i915_gem_object *obj_priv; | |
4170 | int ret; | |
4171 | ||
673a394b EA |
4172 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
4173 | if (obj == NULL) { | |
4174 | DRM_ERROR("Bad handle in i915_gem_pin_ioctl(): %d\n", | |
4175 | args->handle); | |
bf79cb91 | 4176 | return -ENOENT; |
673a394b | 4177 | } |
23010e43 | 4178 | obj_priv = to_intel_bo(obj); |
673a394b | 4179 | |
76c1dec1 CW |
4180 | ret = i915_mutex_lock_interruptible(dev); |
4181 | if (ret) { | |
4182 | drm_gem_object_unreference_unlocked(obj); | |
4183 | return ret; | |
4184 | } | |
4185 | ||
bb6baf76 CW |
4186 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
4187 | DRM_ERROR("Attempting to pin a purgeable buffer\n"); | |
3ef94daa CW |
4188 | drm_gem_object_unreference(obj); |
4189 | mutex_unlock(&dev->struct_mutex); | |
4190 | return -EINVAL; | |
4191 | } | |
4192 | ||
79e53945 JB |
4193 | if (obj_priv->pin_filp != NULL && obj_priv->pin_filp != file_priv) { |
4194 | DRM_ERROR("Already pinned in i915_gem_pin_ioctl(): %d\n", | |
4195 | args->handle); | |
96dec61d | 4196 | drm_gem_object_unreference(obj); |
673a394b | 4197 | mutex_unlock(&dev->struct_mutex); |
79e53945 JB |
4198 | return -EINVAL; |
4199 | } | |
4200 | ||
4201 | obj_priv->user_pin_count++; | |
4202 | obj_priv->pin_filp = file_priv; | |
4203 | if (obj_priv->user_pin_count == 1) { | |
4204 | ret = i915_gem_object_pin(obj, args->alignment); | |
4205 | if (ret != 0) { | |
4206 | drm_gem_object_unreference(obj); | |
4207 | mutex_unlock(&dev->struct_mutex); | |
4208 | return ret; | |
4209 | } | |
673a394b EA |
4210 | } |
4211 | ||
4212 | /* XXX - flush the CPU caches for pinned objects | |
4213 | * as the X server doesn't manage domains yet | |
4214 | */ | |
e47c68e9 | 4215 | i915_gem_object_flush_cpu_write_domain(obj); |
673a394b EA |
4216 | args->offset = obj_priv->gtt_offset; |
4217 | drm_gem_object_unreference(obj); | |
4218 | mutex_unlock(&dev->struct_mutex); | |
4219 | ||
4220 | return 0; | |
4221 | } | |
4222 | ||
4223 | int | |
4224 | i915_gem_unpin_ioctl(struct drm_device *dev, void *data, | |
4225 | struct drm_file *file_priv) | |
4226 | { | |
4227 | struct drm_i915_gem_pin *args = data; | |
4228 | struct drm_gem_object *obj; | |
79e53945 | 4229 | struct drm_i915_gem_object *obj_priv; |
76c1dec1 | 4230 | int ret; |
673a394b EA |
4231 | |
4232 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
4233 | if (obj == NULL) { | |
4234 | DRM_ERROR("Bad handle in i915_gem_unpin_ioctl(): %d\n", | |
4235 | args->handle); | |
bf79cb91 | 4236 | return -ENOENT; |
673a394b EA |
4237 | } |
4238 | ||
23010e43 | 4239 | obj_priv = to_intel_bo(obj); |
76c1dec1 CW |
4240 | |
4241 | ret = i915_mutex_lock_interruptible(dev); | |
4242 | if (ret) { | |
4243 | drm_gem_object_unreference_unlocked(obj); | |
4244 | return ret; | |
4245 | } | |
4246 | ||
79e53945 JB |
4247 | if (obj_priv->pin_filp != file_priv) { |
4248 | DRM_ERROR("Not pinned by caller in i915_gem_pin_ioctl(): %d\n", | |
4249 | args->handle); | |
4250 | drm_gem_object_unreference(obj); | |
4251 | mutex_unlock(&dev->struct_mutex); | |
4252 | return -EINVAL; | |
4253 | } | |
4254 | obj_priv->user_pin_count--; | |
4255 | if (obj_priv->user_pin_count == 0) { | |
4256 | obj_priv->pin_filp = NULL; | |
4257 | i915_gem_object_unpin(obj); | |
4258 | } | |
673a394b EA |
4259 | |
4260 | drm_gem_object_unreference(obj); | |
4261 | mutex_unlock(&dev->struct_mutex); | |
4262 | return 0; | |
4263 | } | |
4264 | ||
4265 | int | |
4266 | i915_gem_busy_ioctl(struct drm_device *dev, void *data, | |
4267 | struct drm_file *file_priv) | |
4268 | { | |
4269 | struct drm_i915_gem_busy *args = data; | |
4270 | struct drm_gem_object *obj; | |
4271 | struct drm_i915_gem_object *obj_priv; | |
30dbf0c0 CW |
4272 | int ret; |
4273 | ||
673a394b EA |
4274 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
4275 | if (obj == NULL) { | |
4276 | DRM_ERROR("Bad handle in i915_gem_busy_ioctl(): %d\n", | |
4277 | args->handle); | |
bf79cb91 | 4278 | return -ENOENT; |
673a394b EA |
4279 | } |
4280 | ||
76c1dec1 CW |
4281 | ret = i915_mutex_lock_interruptible(dev); |
4282 | if (ret) { | |
4283 | drm_gem_object_unreference_unlocked(obj); | |
4284 | return ret; | |
30dbf0c0 CW |
4285 | } |
4286 | ||
0be555b6 CW |
4287 | /* Count all active objects as busy, even if they are currently not used |
4288 | * by the gpu. Users of this interface expect objects to eventually | |
4289 | * become non-busy without any further actions, therefore emit any | |
4290 | * necessary flushes here. | |
c4de0a5d | 4291 | */ |
0be555b6 CW |
4292 | obj_priv = to_intel_bo(obj); |
4293 | args->busy = obj_priv->active; | |
4294 | if (args->busy) { | |
4295 | /* Unconditionally flush objects, even when the gpu still uses this | |
4296 | * object. Userspace calling this function indicates that it wants to | |
4297 | * use this buffer rather sooner than later, so issuing the required | |
4298 | * flush earlier is beneficial. | |
4299 | */ | |
c78ec30b CW |
4300 | if (obj->write_domain & I915_GEM_GPU_DOMAINS) |
4301 | i915_gem_flush_ring(dev, file_priv, | |
9220434a CW |
4302 | obj_priv->ring, |
4303 | 0, obj->write_domain); | |
0be555b6 CW |
4304 | |
4305 | /* Update the active list for the hardware's current position. | |
4306 | * Otherwise this only updates on a delayed timer or when irqs | |
4307 | * are actually unmasked, and our working set ends up being | |
4308 | * larger than required. | |
4309 | */ | |
4310 | i915_gem_retire_requests_ring(dev, obj_priv->ring); | |
4311 | ||
4312 | args->busy = obj_priv->active; | |
4313 | } | |
673a394b EA |
4314 | |
4315 | drm_gem_object_unreference(obj); | |
4316 | mutex_unlock(&dev->struct_mutex); | |
76c1dec1 | 4317 | return 0; |
673a394b EA |
4318 | } |
4319 | ||
4320 | int | |
4321 | i915_gem_throttle_ioctl(struct drm_device *dev, void *data, | |
4322 | struct drm_file *file_priv) | |
4323 | { | |
4324 | return i915_gem_ring_throttle(dev, file_priv); | |
4325 | } | |
4326 | ||
3ef94daa CW |
4327 | int |
4328 | i915_gem_madvise_ioctl(struct drm_device *dev, void *data, | |
4329 | struct drm_file *file_priv) | |
4330 | { | |
4331 | struct drm_i915_gem_madvise *args = data; | |
4332 | struct drm_gem_object *obj; | |
4333 | struct drm_i915_gem_object *obj_priv; | |
76c1dec1 | 4334 | int ret; |
3ef94daa CW |
4335 | |
4336 | switch (args->madv) { | |
4337 | case I915_MADV_DONTNEED: | |
4338 | case I915_MADV_WILLNEED: | |
4339 | break; | |
4340 | default: | |
4341 | return -EINVAL; | |
4342 | } | |
4343 | ||
4344 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
4345 | if (obj == NULL) { | |
4346 | DRM_ERROR("Bad handle in i915_gem_madvise_ioctl(): %d\n", | |
4347 | args->handle); | |
bf79cb91 | 4348 | return -ENOENT; |
3ef94daa | 4349 | } |
23010e43 | 4350 | obj_priv = to_intel_bo(obj); |
3ef94daa | 4351 | |
76c1dec1 CW |
4352 | ret = i915_mutex_lock_interruptible(dev); |
4353 | if (ret) { | |
4354 | drm_gem_object_unreference_unlocked(obj); | |
4355 | return ret; | |
4356 | } | |
4357 | ||
3ef94daa CW |
4358 | if (obj_priv->pin_count) { |
4359 | drm_gem_object_unreference(obj); | |
4360 | mutex_unlock(&dev->struct_mutex); | |
4361 | ||
4362 | DRM_ERROR("Attempted i915_gem_madvise_ioctl() on a pinned object\n"); | |
4363 | return -EINVAL; | |
4364 | } | |
4365 | ||
bb6baf76 CW |
4366 | if (obj_priv->madv != __I915_MADV_PURGED) |
4367 | obj_priv->madv = args->madv; | |
3ef94daa | 4368 | |
2d7ef395 CW |
4369 | /* if the object is no longer bound, discard its backing storage */ |
4370 | if (i915_gem_object_is_purgeable(obj_priv) && | |
4371 | obj_priv->gtt_space == NULL) | |
4372 | i915_gem_object_truncate(obj); | |
4373 | ||
bb6baf76 CW |
4374 | args->retained = obj_priv->madv != __I915_MADV_PURGED; |
4375 | ||
3ef94daa CW |
4376 | drm_gem_object_unreference(obj); |
4377 | mutex_unlock(&dev->struct_mutex); | |
4378 | ||
4379 | return 0; | |
4380 | } | |
4381 | ||
ac52bc56 DV |
4382 | struct drm_gem_object * i915_gem_alloc_object(struct drm_device *dev, |
4383 | size_t size) | |
4384 | { | |
c397b908 | 4385 | struct drm_i915_gem_object *obj; |
ac52bc56 | 4386 | |
c397b908 DV |
4387 | obj = kzalloc(sizeof(*obj), GFP_KERNEL); |
4388 | if (obj == NULL) | |
4389 | return NULL; | |
673a394b | 4390 | |
c397b908 DV |
4391 | if (drm_gem_object_init(dev, &obj->base, size) != 0) { |
4392 | kfree(obj); | |
4393 | return NULL; | |
4394 | } | |
673a394b | 4395 | |
c397b908 DV |
4396 | obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
4397 | obj->base.read_domains = I915_GEM_DOMAIN_CPU; | |
673a394b | 4398 | |
c397b908 | 4399 | obj->agp_type = AGP_USER_MEMORY; |
62b8b215 | 4400 | obj->base.driver_private = NULL; |
c397b908 DV |
4401 | obj->fence_reg = I915_FENCE_REG_NONE; |
4402 | INIT_LIST_HEAD(&obj->list); | |
4403 | INIT_LIST_HEAD(&obj->gpu_write_list); | |
c397b908 | 4404 | obj->madv = I915_MADV_WILLNEED; |
de151cf6 | 4405 | |
c397b908 DV |
4406 | trace_i915_gem_object_create(&obj->base); |
4407 | ||
4408 | return &obj->base; | |
4409 | } | |
4410 | ||
4411 | int i915_gem_init_object(struct drm_gem_object *obj) | |
4412 | { | |
4413 | BUG(); | |
de151cf6 | 4414 | |
673a394b EA |
4415 | return 0; |
4416 | } | |
4417 | ||
be72615b | 4418 | static void i915_gem_free_object_tail(struct drm_gem_object *obj) |
673a394b | 4419 | { |
de151cf6 | 4420 | struct drm_device *dev = obj->dev; |
be72615b | 4421 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 4422 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
be72615b | 4423 | int ret; |
673a394b | 4424 | |
be72615b CW |
4425 | ret = i915_gem_object_unbind(obj); |
4426 | if (ret == -ERESTARTSYS) { | |
4427 | list_move(&obj_priv->list, | |
4428 | &dev_priv->mm.deferred_free_list); | |
4429 | return; | |
4430 | } | |
673a394b | 4431 | |
7e616158 CW |
4432 | if (obj_priv->mmap_offset) |
4433 | i915_gem_free_mmap_offset(obj); | |
de151cf6 | 4434 | |
c397b908 DV |
4435 | drm_gem_object_release(obj); |
4436 | ||
9a298b2a | 4437 | kfree(obj_priv->page_cpu_valid); |
280b713b | 4438 | kfree(obj_priv->bit_17); |
c397b908 | 4439 | kfree(obj_priv); |
673a394b EA |
4440 | } |
4441 | ||
be72615b CW |
4442 | void i915_gem_free_object(struct drm_gem_object *obj) |
4443 | { | |
4444 | struct drm_device *dev = obj->dev; | |
4445 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); | |
4446 | ||
4447 | trace_i915_gem_object_destroy(obj); | |
4448 | ||
4449 | while (obj_priv->pin_count > 0) | |
4450 | i915_gem_object_unpin(obj); | |
4451 | ||
4452 | if (obj_priv->phys_obj) | |
4453 | i915_gem_detach_phys_object(dev, obj); | |
4454 | ||
4455 | i915_gem_free_object_tail(obj); | |
4456 | } | |
4457 | ||
29105ccc CW |
4458 | int |
4459 | i915_gem_idle(struct drm_device *dev) | |
4460 | { | |
4461 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4462 | int ret; | |
28dfe52a | 4463 | |
29105ccc | 4464 | mutex_lock(&dev->struct_mutex); |
1c5d22f7 | 4465 | |
8187a2b7 | 4466 | if (dev_priv->mm.suspended || |
d1b851fc ZN |
4467 | (dev_priv->render_ring.gem_object == NULL) || |
4468 | (HAS_BSD(dev) && | |
4469 | dev_priv->bsd_ring.gem_object == NULL)) { | |
29105ccc CW |
4470 | mutex_unlock(&dev->struct_mutex); |
4471 | return 0; | |
28dfe52a EA |
4472 | } |
4473 | ||
29105ccc | 4474 | ret = i915_gpu_idle(dev); |
6dbe2772 KP |
4475 | if (ret) { |
4476 | mutex_unlock(&dev->struct_mutex); | |
673a394b | 4477 | return ret; |
6dbe2772 | 4478 | } |
673a394b | 4479 | |
29105ccc CW |
4480 | /* Under UMS, be paranoid and evict. */ |
4481 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) { | |
b47eb4a2 | 4482 | ret = i915_gem_evict_inactive(dev); |
29105ccc CW |
4483 | if (ret) { |
4484 | mutex_unlock(&dev->struct_mutex); | |
4485 | return ret; | |
4486 | } | |
4487 | } | |
4488 | ||
4489 | /* Hack! Don't let anybody do execbuf while we don't control the chip. | |
4490 | * We need to replace this with a semaphore, or something. | |
4491 | * And not confound mm.suspended! | |
4492 | */ | |
4493 | dev_priv->mm.suspended = 1; | |
bc0c7f14 | 4494 | del_timer_sync(&dev_priv->hangcheck_timer); |
29105ccc CW |
4495 | |
4496 | i915_kernel_lost_context(dev); | |
6dbe2772 | 4497 | i915_gem_cleanup_ringbuffer(dev); |
29105ccc | 4498 | |
6dbe2772 KP |
4499 | mutex_unlock(&dev->struct_mutex); |
4500 | ||
29105ccc CW |
4501 | /* Cancel the retire work handler, which should be idle now. */ |
4502 | cancel_delayed_work_sync(&dev_priv->mm.retire_work); | |
4503 | ||
673a394b EA |
4504 | return 0; |
4505 | } | |
4506 | ||
e552eb70 JB |
4507 | /* |
4508 | * 965+ support PIPE_CONTROL commands, which provide finer grained control | |
4509 | * over cache flushing. | |
4510 | */ | |
8187a2b7 | 4511 | static int |
e552eb70 JB |
4512 | i915_gem_init_pipe_control(struct drm_device *dev) |
4513 | { | |
4514 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4515 | struct drm_gem_object *obj; | |
4516 | struct drm_i915_gem_object *obj_priv; | |
4517 | int ret; | |
4518 | ||
34dc4d44 | 4519 | obj = i915_gem_alloc_object(dev, 4096); |
e552eb70 JB |
4520 | if (obj == NULL) { |
4521 | DRM_ERROR("Failed to allocate seqno page\n"); | |
4522 | ret = -ENOMEM; | |
4523 | goto err; | |
4524 | } | |
4525 | obj_priv = to_intel_bo(obj); | |
4526 | obj_priv->agp_type = AGP_USER_CACHED_MEMORY; | |
4527 | ||
4528 | ret = i915_gem_object_pin(obj, 4096); | |
4529 | if (ret) | |
4530 | goto err_unref; | |
4531 | ||
4532 | dev_priv->seqno_gfx_addr = obj_priv->gtt_offset; | |
4533 | dev_priv->seqno_page = kmap(obj_priv->pages[0]); | |
4534 | if (dev_priv->seqno_page == NULL) | |
4535 | goto err_unpin; | |
4536 | ||
4537 | dev_priv->seqno_obj = obj; | |
4538 | memset(dev_priv->seqno_page, 0, PAGE_SIZE); | |
4539 | ||
4540 | return 0; | |
4541 | ||
4542 | err_unpin: | |
4543 | i915_gem_object_unpin(obj); | |
4544 | err_unref: | |
4545 | drm_gem_object_unreference(obj); | |
4546 | err: | |
4547 | return ret; | |
4548 | } | |
4549 | ||
8187a2b7 ZN |
4550 | |
4551 | static void | |
e552eb70 JB |
4552 | i915_gem_cleanup_pipe_control(struct drm_device *dev) |
4553 | { | |
4554 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4555 | struct drm_gem_object *obj; | |
4556 | struct drm_i915_gem_object *obj_priv; | |
4557 | ||
4558 | obj = dev_priv->seqno_obj; | |
4559 | obj_priv = to_intel_bo(obj); | |
4560 | kunmap(obj_priv->pages[0]); | |
4561 | i915_gem_object_unpin(obj); | |
4562 | drm_gem_object_unreference(obj); | |
4563 | dev_priv->seqno_obj = NULL; | |
4564 | ||
4565 | dev_priv->seqno_page = NULL; | |
673a394b EA |
4566 | } |
4567 | ||
8187a2b7 ZN |
4568 | int |
4569 | i915_gem_init_ringbuffer(struct drm_device *dev) | |
4570 | { | |
4571 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4572 | int ret; | |
68f95ba9 | 4573 | |
8187a2b7 ZN |
4574 | if (HAS_PIPE_CONTROL(dev)) { |
4575 | ret = i915_gem_init_pipe_control(dev); | |
4576 | if (ret) | |
4577 | return ret; | |
4578 | } | |
68f95ba9 | 4579 | |
5c1143bb | 4580 | ret = intel_init_render_ring_buffer(dev); |
68f95ba9 CW |
4581 | if (ret) |
4582 | goto cleanup_pipe_control; | |
4583 | ||
4584 | if (HAS_BSD(dev)) { | |
5c1143bb | 4585 | ret = intel_init_bsd_ring_buffer(dev); |
68f95ba9 CW |
4586 | if (ret) |
4587 | goto cleanup_render_ring; | |
d1b851fc | 4588 | } |
68f95ba9 | 4589 | |
6f392d54 CW |
4590 | dev_priv->next_seqno = 1; |
4591 | ||
68f95ba9 CW |
4592 | return 0; |
4593 | ||
4594 | cleanup_render_ring: | |
4595 | intel_cleanup_ring_buffer(dev, &dev_priv->render_ring); | |
4596 | cleanup_pipe_control: | |
4597 | if (HAS_PIPE_CONTROL(dev)) | |
4598 | i915_gem_cleanup_pipe_control(dev); | |
8187a2b7 ZN |
4599 | return ret; |
4600 | } | |
4601 | ||
4602 | void | |
4603 | i915_gem_cleanup_ringbuffer(struct drm_device *dev) | |
4604 | { | |
4605 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4606 | ||
4607 | intel_cleanup_ring_buffer(dev, &dev_priv->render_ring); | |
d1b851fc ZN |
4608 | if (HAS_BSD(dev)) |
4609 | intel_cleanup_ring_buffer(dev, &dev_priv->bsd_ring); | |
8187a2b7 ZN |
4610 | if (HAS_PIPE_CONTROL(dev)) |
4611 | i915_gem_cleanup_pipe_control(dev); | |
4612 | } | |
4613 | ||
673a394b EA |
4614 | int |
4615 | i915_gem_entervt_ioctl(struct drm_device *dev, void *data, | |
4616 | struct drm_file *file_priv) | |
4617 | { | |
4618 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4619 | int ret; | |
4620 | ||
79e53945 JB |
4621 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
4622 | return 0; | |
4623 | ||
ba1234d1 | 4624 | if (atomic_read(&dev_priv->mm.wedged)) { |
673a394b | 4625 | DRM_ERROR("Reenabling wedged hardware, good luck\n"); |
ba1234d1 | 4626 | atomic_set(&dev_priv->mm.wedged, 0); |
673a394b EA |
4627 | } |
4628 | ||
673a394b | 4629 | mutex_lock(&dev->struct_mutex); |
9bb2d6f9 EA |
4630 | dev_priv->mm.suspended = 0; |
4631 | ||
4632 | ret = i915_gem_init_ringbuffer(dev); | |
d816f6ac WF |
4633 | if (ret != 0) { |
4634 | mutex_unlock(&dev->struct_mutex); | |
9bb2d6f9 | 4635 | return ret; |
d816f6ac | 4636 | } |
9bb2d6f9 | 4637 | |
852835f3 | 4638 | BUG_ON(!list_empty(&dev_priv->render_ring.active_list)); |
d1b851fc | 4639 | BUG_ON(HAS_BSD(dev) && !list_empty(&dev_priv->bsd_ring.active_list)); |
673a394b EA |
4640 | BUG_ON(!list_empty(&dev_priv->mm.flushing_list)); |
4641 | BUG_ON(!list_empty(&dev_priv->mm.inactive_list)); | |
852835f3 | 4642 | BUG_ON(!list_empty(&dev_priv->render_ring.request_list)); |
d1b851fc | 4643 | BUG_ON(HAS_BSD(dev) && !list_empty(&dev_priv->bsd_ring.request_list)); |
673a394b | 4644 | mutex_unlock(&dev->struct_mutex); |
dbb19d30 | 4645 | |
5f35308b CW |
4646 | ret = drm_irq_install(dev); |
4647 | if (ret) | |
4648 | goto cleanup_ringbuffer; | |
dbb19d30 | 4649 | |
673a394b | 4650 | return 0; |
5f35308b CW |
4651 | |
4652 | cleanup_ringbuffer: | |
4653 | mutex_lock(&dev->struct_mutex); | |
4654 | i915_gem_cleanup_ringbuffer(dev); | |
4655 | dev_priv->mm.suspended = 1; | |
4656 | mutex_unlock(&dev->struct_mutex); | |
4657 | ||
4658 | return ret; | |
673a394b EA |
4659 | } |
4660 | ||
4661 | int | |
4662 | i915_gem_leavevt_ioctl(struct drm_device *dev, void *data, | |
4663 | struct drm_file *file_priv) | |
4664 | { | |
79e53945 JB |
4665 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
4666 | return 0; | |
4667 | ||
dbb19d30 | 4668 | drm_irq_uninstall(dev); |
e6890f6f | 4669 | return i915_gem_idle(dev); |
673a394b EA |
4670 | } |
4671 | ||
4672 | void | |
4673 | i915_gem_lastclose(struct drm_device *dev) | |
4674 | { | |
4675 | int ret; | |
673a394b | 4676 | |
e806b495 EA |
4677 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
4678 | return; | |
4679 | ||
6dbe2772 KP |
4680 | ret = i915_gem_idle(dev); |
4681 | if (ret) | |
4682 | DRM_ERROR("failed to idle hardware: %d\n", ret); | |
673a394b EA |
4683 | } |
4684 | ||
4685 | void | |
4686 | i915_gem_load(struct drm_device *dev) | |
4687 | { | |
b5aa8a0f | 4688 | int i; |
673a394b EA |
4689 | drm_i915_private_t *dev_priv = dev->dev_private; |
4690 | ||
673a394b | 4691 | INIT_LIST_HEAD(&dev_priv->mm.flushing_list); |
99fcb766 | 4692 | INIT_LIST_HEAD(&dev_priv->mm.gpu_write_list); |
673a394b | 4693 | INIT_LIST_HEAD(&dev_priv->mm.inactive_list); |
f13d3f73 | 4694 | INIT_LIST_HEAD(&dev_priv->mm.pinned_list); |
a09ba7fa | 4695 | INIT_LIST_HEAD(&dev_priv->mm.fence_list); |
be72615b | 4696 | INIT_LIST_HEAD(&dev_priv->mm.deferred_free_list); |
852835f3 ZN |
4697 | INIT_LIST_HEAD(&dev_priv->render_ring.active_list); |
4698 | INIT_LIST_HEAD(&dev_priv->render_ring.request_list); | |
d1b851fc ZN |
4699 | if (HAS_BSD(dev)) { |
4700 | INIT_LIST_HEAD(&dev_priv->bsd_ring.active_list); | |
4701 | INIT_LIST_HEAD(&dev_priv->bsd_ring.request_list); | |
4702 | } | |
007cc8ac DV |
4703 | for (i = 0; i < 16; i++) |
4704 | INIT_LIST_HEAD(&dev_priv->fence_regs[i].lru_list); | |
673a394b EA |
4705 | INIT_DELAYED_WORK(&dev_priv->mm.retire_work, |
4706 | i915_gem_retire_work_handler); | |
30dbf0c0 | 4707 | init_completion(&dev_priv->error_completion); |
31169714 CW |
4708 | spin_lock(&shrink_list_lock); |
4709 | list_add(&dev_priv->mm.shrink_list, &shrink_list); | |
4710 | spin_unlock(&shrink_list_lock); | |
4711 | ||
94400120 DA |
4712 | /* On GEN3 we really need to make sure the ARB C3 LP bit is set */ |
4713 | if (IS_GEN3(dev)) { | |
4714 | u32 tmp = I915_READ(MI_ARB_STATE); | |
4715 | if (!(tmp & MI_ARB_C3_LP_WRITE_ENABLE)) { | |
4716 | /* arb state is a masked write, so set bit + bit in mask */ | |
4717 | tmp = MI_ARB_C3_LP_WRITE_ENABLE | (MI_ARB_C3_LP_WRITE_ENABLE << MI_ARB_MASK_SHIFT); | |
4718 | I915_WRITE(MI_ARB_STATE, tmp); | |
4719 | } | |
4720 | } | |
4721 | ||
de151cf6 | 4722 | /* Old X drivers will take 0-2 for front, back, depth buffers */ |
b397c836 EA |
4723 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
4724 | dev_priv->fence_reg_start = 3; | |
de151cf6 | 4725 | |
a6c45cf0 | 4726 | if (INTEL_INFO(dev)->gen >= 4 || IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) |
de151cf6 JB |
4727 | dev_priv->num_fence_regs = 16; |
4728 | else | |
4729 | dev_priv->num_fence_regs = 8; | |
4730 | ||
b5aa8a0f | 4731 | /* Initialize fence registers to zero */ |
a6c45cf0 CW |
4732 | switch (INTEL_INFO(dev)->gen) { |
4733 | case 6: | |
4734 | for (i = 0; i < 16; i++) | |
4735 | I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + (i * 8), 0); | |
4736 | break; | |
4737 | case 5: | |
4738 | case 4: | |
b5aa8a0f GH |
4739 | for (i = 0; i < 16; i++) |
4740 | I915_WRITE64(FENCE_REG_965_0 + (i * 8), 0); | |
a6c45cf0 CW |
4741 | break; |
4742 | case 3: | |
b5aa8a0f GH |
4743 | if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) |
4744 | for (i = 0; i < 8; i++) | |
4745 | I915_WRITE(FENCE_REG_945_8 + (i * 4), 0); | |
a6c45cf0 CW |
4746 | case 2: |
4747 | for (i = 0; i < 8; i++) | |
4748 | I915_WRITE(FENCE_REG_830_0 + (i * 4), 0); | |
4749 | break; | |
b5aa8a0f | 4750 | } |
673a394b | 4751 | i915_gem_detect_bit_6_swizzle(dev); |
6b95a207 | 4752 | init_waitqueue_head(&dev_priv->pending_flip_queue); |
673a394b | 4753 | } |
71acb5eb DA |
4754 | |
4755 | /* | |
4756 | * Create a physically contiguous memory object for this object | |
4757 | * e.g. for cursor + overlay regs | |
4758 | */ | |
995b6762 CW |
4759 | static int i915_gem_init_phys_object(struct drm_device *dev, |
4760 | int id, int size, int align) | |
71acb5eb DA |
4761 | { |
4762 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4763 | struct drm_i915_gem_phys_object *phys_obj; | |
4764 | int ret; | |
4765 | ||
4766 | if (dev_priv->mm.phys_objs[id - 1] || !size) | |
4767 | return 0; | |
4768 | ||
9a298b2a | 4769 | phys_obj = kzalloc(sizeof(struct drm_i915_gem_phys_object), GFP_KERNEL); |
71acb5eb DA |
4770 | if (!phys_obj) |
4771 | return -ENOMEM; | |
4772 | ||
4773 | phys_obj->id = id; | |
4774 | ||
6eeefaf3 | 4775 | phys_obj->handle = drm_pci_alloc(dev, size, align); |
71acb5eb DA |
4776 | if (!phys_obj->handle) { |
4777 | ret = -ENOMEM; | |
4778 | goto kfree_obj; | |
4779 | } | |
4780 | #ifdef CONFIG_X86 | |
4781 | set_memory_wc((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); | |
4782 | #endif | |
4783 | ||
4784 | dev_priv->mm.phys_objs[id - 1] = phys_obj; | |
4785 | ||
4786 | return 0; | |
4787 | kfree_obj: | |
9a298b2a | 4788 | kfree(phys_obj); |
71acb5eb DA |
4789 | return ret; |
4790 | } | |
4791 | ||
995b6762 | 4792 | static void i915_gem_free_phys_object(struct drm_device *dev, int id) |
71acb5eb DA |
4793 | { |
4794 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4795 | struct drm_i915_gem_phys_object *phys_obj; | |
4796 | ||
4797 | if (!dev_priv->mm.phys_objs[id - 1]) | |
4798 | return; | |
4799 | ||
4800 | phys_obj = dev_priv->mm.phys_objs[id - 1]; | |
4801 | if (phys_obj->cur_obj) { | |
4802 | i915_gem_detach_phys_object(dev, phys_obj->cur_obj); | |
4803 | } | |
4804 | ||
4805 | #ifdef CONFIG_X86 | |
4806 | set_memory_wb((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); | |
4807 | #endif | |
4808 | drm_pci_free(dev, phys_obj->handle); | |
4809 | kfree(phys_obj); | |
4810 | dev_priv->mm.phys_objs[id - 1] = NULL; | |
4811 | } | |
4812 | ||
4813 | void i915_gem_free_all_phys_object(struct drm_device *dev) | |
4814 | { | |
4815 | int i; | |
4816 | ||
260883c8 | 4817 | for (i = I915_GEM_PHYS_CURSOR_0; i <= I915_MAX_PHYS_OBJECT; i++) |
71acb5eb DA |
4818 | i915_gem_free_phys_object(dev, i); |
4819 | } | |
4820 | ||
4821 | void i915_gem_detach_phys_object(struct drm_device *dev, | |
4822 | struct drm_gem_object *obj) | |
4823 | { | |
4824 | struct drm_i915_gem_object *obj_priv; | |
4825 | int i; | |
4826 | int ret; | |
4827 | int page_count; | |
4828 | ||
23010e43 | 4829 | obj_priv = to_intel_bo(obj); |
71acb5eb DA |
4830 | if (!obj_priv->phys_obj) |
4831 | return; | |
4832 | ||
4bdadb97 | 4833 | ret = i915_gem_object_get_pages(obj, 0); |
71acb5eb DA |
4834 | if (ret) |
4835 | goto out; | |
4836 | ||
4837 | page_count = obj->size / PAGE_SIZE; | |
4838 | ||
4839 | for (i = 0; i < page_count; i++) { | |
856fa198 | 4840 | char *dst = kmap_atomic(obj_priv->pages[i], KM_USER0); |
71acb5eb DA |
4841 | char *src = obj_priv->phys_obj->handle->vaddr + (i * PAGE_SIZE); |
4842 | ||
4843 | memcpy(dst, src, PAGE_SIZE); | |
4844 | kunmap_atomic(dst, KM_USER0); | |
4845 | } | |
856fa198 | 4846 | drm_clflush_pages(obj_priv->pages, page_count); |
71acb5eb | 4847 | drm_agp_chipset_flush(dev); |
d78b47b9 CW |
4848 | |
4849 | i915_gem_object_put_pages(obj); | |
71acb5eb DA |
4850 | out: |
4851 | obj_priv->phys_obj->cur_obj = NULL; | |
4852 | obj_priv->phys_obj = NULL; | |
4853 | } | |
4854 | ||
4855 | int | |
4856 | i915_gem_attach_phys_object(struct drm_device *dev, | |
6eeefaf3 CW |
4857 | struct drm_gem_object *obj, |
4858 | int id, | |
4859 | int align) | |
71acb5eb DA |
4860 | { |
4861 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4862 | struct drm_i915_gem_object *obj_priv; | |
4863 | int ret = 0; | |
4864 | int page_count; | |
4865 | int i; | |
4866 | ||
4867 | if (id > I915_MAX_PHYS_OBJECT) | |
4868 | return -EINVAL; | |
4869 | ||
23010e43 | 4870 | obj_priv = to_intel_bo(obj); |
71acb5eb DA |
4871 | |
4872 | if (obj_priv->phys_obj) { | |
4873 | if (obj_priv->phys_obj->id == id) | |
4874 | return 0; | |
4875 | i915_gem_detach_phys_object(dev, obj); | |
4876 | } | |
4877 | ||
71acb5eb DA |
4878 | /* create a new object */ |
4879 | if (!dev_priv->mm.phys_objs[id - 1]) { | |
4880 | ret = i915_gem_init_phys_object(dev, id, | |
6eeefaf3 | 4881 | obj->size, align); |
71acb5eb | 4882 | if (ret) { |
aeb565df | 4883 | DRM_ERROR("failed to init phys object %d size: %zu\n", id, obj->size); |
71acb5eb DA |
4884 | goto out; |
4885 | } | |
4886 | } | |
4887 | ||
4888 | /* bind to the object */ | |
4889 | obj_priv->phys_obj = dev_priv->mm.phys_objs[id - 1]; | |
4890 | obj_priv->phys_obj->cur_obj = obj; | |
4891 | ||
4bdadb97 | 4892 | ret = i915_gem_object_get_pages(obj, 0); |
71acb5eb DA |
4893 | if (ret) { |
4894 | DRM_ERROR("failed to get page list\n"); | |
4895 | goto out; | |
4896 | } | |
4897 | ||
4898 | page_count = obj->size / PAGE_SIZE; | |
4899 | ||
4900 | for (i = 0; i < page_count; i++) { | |
856fa198 | 4901 | char *src = kmap_atomic(obj_priv->pages[i], KM_USER0); |
71acb5eb DA |
4902 | char *dst = obj_priv->phys_obj->handle->vaddr + (i * PAGE_SIZE); |
4903 | ||
4904 | memcpy(dst, src, PAGE_SIZE); | |
4905 | kunmap_atomic(src, KM_USER0); | |
4906 | } | |
4907 | ||
d78b47b9 CW |
4908 | i915_gem_object_put_pages(obj); |
4909 | ||
71acb5eb DA |
4910 | return 0; |
4911 | out: | |
4912 | return ret; | |
4913 | } | |
4914 | ||
4915 | static int | |
4916 | i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj, | |
4917 | struct drm_i915_gem_pwrite *args, | |
4918 | struct drm_file *file_priv) | |
4919 | { | |
23010e43 | 4920 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
71acb5eb DA |
4921 | void *obj_addr; |
4922 | int ret; | |
4923 | char __user *user_data; | |
4924 | ||
4925 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
4926 | obj_addr = obj_priv->phys_obj->handle->vaddr + args->offset; | |
4927 | ||
44d98a61 | 4928 | DRM_DEBUG_DRIVER("obj_addr %p, %lld\n", obj_addr, args->size); |
71acb5eb DA |
4929 | ret = copy_from_user(obj_addr, user_data, args->size); |
4930 | if (ret) | |
4931 | return -EFAULT; | |
4932 | ||
4933 | drm_agp_chipset_flush(dev); | |
4934 | return 0; | |
4935 | } | |
b962442e | 4936 | |
f787a5f5 | 4937 | void i915_gem_release(struct drm_device *dev, struct drm_file *file) |
b962442e | 4938 | { |
f787a5f5 | 4939 | struct drm_i915_file_private *file_priv = file->driver_priv; |
b962442e EA |
4940 | |
4941 | /* Clean up our request list when the client is going away, so that | |
4942 | * later retire_requests won't dereference our soon-to-be-gone | |
4943 | * file_priv. | |
4944 | */ | |
1c25595f | 4945 | spin_lock(&file_priv->mm.lock); |
f787a5f5 CW |
4946 | while (!list_empty(&file_priv->mm.request_list)) { |
4947 | struct drm_i915_gem_request *request; | |
4948 | ||
4949 | request = list_first_entry(&file_priv->mm.request_list, | |
4950 | struct drm_i915_gem_request, | |
4951 | client_list); | |
4952 | list_del(&request->client_list); | |
4953 | request->file_priv = NULL; | |
4954 | } | |
1c25595f | 4955 | spin_unlock(&file_priv->mm.lock); |
b962442e | 4956 | } |
31169714 | 4957 | |
1637ef41 CW |
4958 | static int |
4959 | i915_gpu_is_active(struct drm_device *dev) | |
4960 | { | |
4961 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4962 | int lists_empty; | |
4963 | ||
1637ef41 | 4964 | lists_empty = list_empty(&dev_priv->mm.flushing_list) && |
852835f3 | 4965 | list_empty(&dev_priv->render_ring.active_list); |
d1b851fc ZN |
4966 | if (HAS_BSD(dev)) |
4967 | lists_empty &= list_empty(&dev_priv->bsd_ring.active_list); | |
1637ef41 CW |
4968 | |
4969 | return !lists_empty; | |
4970 | } | |
4971 | ||
31169714 | 4972 | static int |
7f8275d0 | 4973 | i915_gem_shrink(struct shrinker *shrink, int nr_to_scan, gfp_t gfp_mask) |
31169714 CW |
4974 | { |
4975 | drm_i915_private_t *dev_priv, *next_dev; | |
4976 | struct drm_i915_gem_object *obj_priv, *next_obj; | |
4977 | int cnt = 0; | |
4978 | int would_deadlock = 1; | |
4979 | ||
4980 | /* "fast-path" to count number of available objects */ | |
4981 | if (nr_to_scan == 0) { | |
4982 | spin_lock(&shrink_list_lock); | |
4983 | list_for_each_entry(dev_priv, &shrink_list, mm.shrink_list) { | |
4984 | struct drm_device *dev = dev_priv->dev; | |
4985 | ||
4986 | if (mutex_trylock(&dev->struct_mutex)) { | |
4987 | list_for_each_entry(obj_priv, | |
4988 | &dev_priv->mm.inactive_list, | |
4989 | list) | |
4990 | cnt++; | |
4991 | mutex_unlock(&dev->struct_mutex); | |
4992 | } | |
4993 | } | |
4994 | spin_unlock(&shrink_list_lock); | |
4995 | ||
4996 | return (cnt / 100) * sysctl_vfs_cache_pressure; | |
4997 | } | |
4998 | ||
4999 | spin_lock(&shrink_list_lock); | |
5000 | ||
1637ef41 | 5001 | rescan: |
31169714 CW |
5002 | /* first scan for clean buffers */ |
5003 | list_for_each_entry_safe(dev_priv, next_dev, | |
5004 | &shrink_list, mm.shrink_list) { | |
5005 | struct drm_device *dev = dev_priv->dev; | |
5006 | ||
5007 | if (! mutex_trylock(&dev->struct_mutex)) | |
5008 | continue; | |
5009 | ||
5010 | spin_unlock(&shrink_list_lock); | |
b09a1fec | 5011 | i915_gem_retire_requests(dev); |
31169714 CW |
5012 | |
5013 | list_for_each_entry_safe(obj_priv, next_obj, | |
5014 | &dev_priv->mm.inactive_list, | |
5015 | list) { | |
5016 | if (i915_gem_object_is_purgeable(obj_priv)) { | |
a8089e84 | 5017 | i915_gem_object_unbind(&obj_priv->base); |
31169714 CW |
5018 | if (--nr_to_scan <= 0) |
5019 | break; | |
5020 | } | |
5021 | } | |
5022 | ||
5023 | spin_lock(&shrink_list_lock); | |
5024 | mutex_unlock(&dev->struct_mutex); | |
5025 | ||
963b4836 CW |
5026 | would_deadlock = 0; |
5027 | ||
31169714 CW |
5028 | if (nr_to_scan <= 0) |
5029 | break; | |
5030 | } | |
5031 | ||
5032 | /* second pass, evict/count anything still on the inactive list */ | |
5033 | list_for_each_entry_safe(dev_priv, next_dev, | |
5034 | &shrink_list, mm.shrink_list) { | |
5035 | struct drm_device *dev = dev_priv->dev; | |
5036 | ||
5037 | if (! mutex_trylock(&dev->struct_mutex)) | |
5038 | continue; | |
5039 | ||
5040 | spin_unlock(&shrink_list_lock); | |
5041 | ||
5042 | list_for_each_entry_safe(obj_priv, next_obj, | |
5043 | &dev_priv->mm.inactive_list, | |
5044 | list) { | |
5045 | if (nr_to_scan > 0) { | |
a8089e84 | 5046 | i915_gem_object_unbind(&obj_priv->base); |
31169714 CW |
5047 | nr_to_scan--; |
5048 | } else | |
5049 | cnt++; | |
5050 | } | |
5051 | ||
5052 | spin_lock(&shrink_list_lock); | |
5053 | mutex_unlock(&dev->struct_mutex); | |
5054 | ||
5055 | would_deadlock = 0; | |
5056 | } | |
5057 | ||
1637ef41 CW |
5058 | if (nr_to_scan) { |
5059 | int active = 0; | |
5060 | ||
5061 | /* | |
5062 | * We are desperate for pages, so as a last resort, wait | |
5063 | * for the GPU to finish and discard whatever we can. | |
5064 | * This has a dramatic impact to reduce the number of | |
5065 | * OOM-killer events whilst running the GPU aggressively. | |
5066 | */ | |
5067 | list_for_each_entry(dev_priv, &shrink_list, mm.shrink_list) { | |
5068 | struct drm_device *dev = dev_priv->dev; | |
5069 | ||
5070 | if (!mutex_trylock(&dev->struct_mutex)) | |
5071 | continue; | |
5072 | ||
5073 | spin_unlock(&shrink_list_lock); | |
5074 | ||
5075 | if (i915_gpu_is_active(dev)) { | |
5076 | i915_gpu_idle(dev); | |
5077 | active++; | |
5078 | } | |
5079 | ||
5080 | spin_lock(&shrink_list_lock); | |
5081 | mutex_unlock(&dev->struct_mutex); | |
5082 | } | |
5083 | ||
5084 | if (active) | |
5085 | goto rescan; | |
5086 | } | |
5087 | ||
31169714 CW |
5088 | spin_unlock(&shrink_list_lock); |
5089 | ||
5090 | if (would_deadlock) | |
5091 | return -1; | |
5092 | else if (cnt > 0) | |
5093 | return (cnt / 100) * sysctl_vfs_cache_pressure; | |
5094 | else | |
5095 | return 0; | |
5096 | } | |
5097 | ||
5098 | static struct shrinker shrinker = { | |
5099 | .shrink = i915_gem_shrink, | |
5100 | .seeks = DEFAULT_SEEKS, | |
5101 | }; | |
5102 | ||
5103 | __init void | |
5104 | i915_gem_shrinker_init(void) | |
5105 | { | |
5106 | register_shrinker(&shrinker); | |
5107 | } | |
5108 | ||
5109 | __exit void | |
5110 | i915_gem_shrinker_exit(void) | |
5111 | { | |
5112 | unregister_shrinker(&shrinker); | |
5113 | } |