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Commit | Line | Data |
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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); |
2dafb1e0 | 40 | static int i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj); |
e47c68e9 EA |
41 | static void i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj); |
42 | static void i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj); | |
e47c68e9 EA |
43 | static int i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, |
44 | int write); | |
45 | static int i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj, | |
46 | uint64_t offset, | |
47 | uint64_t size); | |
48 | static void i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj); | |
673a394b | 49 | static int i915_gem_object_wait_rendering(struct drm_gem_object *obj); |
de151cf6 JB |
50 | static int i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, |
51 | unsigned alignment); | |
de151cf6 | 52 | static void i915_gem_clear_fence_reg(struct drm_gem_object *obj); |
71acb5eb DA |
53 | static int i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj, |
54 | struct drm_i915_gem_pwrite *args, | |
55 | struct drm_file *file_priv); | |
be72615b | 56 | static void i915_gem_free_object_tail(struct drm_gem_object *obj); |
673a394b | 57 | |
31169714 CW |
58 | static LIST_HEAD(shrink_list); |
59 | static DEFINE_SPINLOCK(shrink_list_lock); | |
60 | ||
7d1c4804 CW |
61 | static inline bool |
62 | i915_gem_object_is_inactive(struct drm_i915_gem_object *obj_priv) | |
63 | { | |
64 | return obj_priv->gtt_space && | |
65 | !obj_priv->active && | |
66 | obj_priv->pin_count == 0; | |
67 | } | |
68 | ||
79e53945 JB |
69 | int i915_gem_do_init(struct drm_device *dev, unsigned long start, |
70 | unsigned long end) | |
673a394b EA |
71 | { |
72 | drm_i915_private_t *dev_priv = dev->dev_private; | |
673a394b | 73 | |
79e53945 JB |
74 | if (start >= end || |
75 | (start & (PAGE_SIZE - 1)) != 0 || | |
76 | (end & (PAGE_SIZE - 1)) != 0) { | |
673a394b EA |
77 | return -EINVAL; |
78 | } | |
79 | ||
79e53945 JB |
80 | drm_mm_init(&dev_priv->mm.gtt_space, start, |
81 | end - start); | |
673a394b | 82 | |
79e53945 JB |
83 | dev->gtt_total = (uint32_t) (end - start); |
84 | ||
85 | return 0; | |
86 | } | |
673a394b | 87 | |
79e53945 JB |
88 | int |
89 | i915_gem_init_ioctl(struct drm_device *dev, void *data, | |
90 | struct drm_file *file_priv) | |
91 | { | |
92 | struct drm_i915_gem_init *args = data; | |
93 | int ret; | |
94 | ||
95 | mutex_lock(&dev->struct_mutex); | |
96 | ret = i915_gem_do_init(dev, args->gtt_start, args->gtt_end); | |
673a394b EA |
97 | mutex_unlock(&dev->struct_mutex); |
98 | ||
79e53945 | 99 | return ret; |
673a394b EA |
100 | } |
101 | ||
5a125c3c EA |
102 | int |
103 | i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data, | |
104 | struct drm_file *file_priv) | |
105 | { | |
5a125c3c | 106 | struct drm_i915_gem_get_aperture *args = data; |
5a125c3c EA |
107 | |
108 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
109 | return -ENODEV; | |
110 | ||
111 | args->aper_size = dev->gtt_total; | |
2678d9d6 KP |
112 | args->aper_available_size = (args->aper_size - |
113 | atomic_read(&dev->pin_memory)); | |
5a125c3c EA |
114 | |
115 | return 0; | |
116 | } | |
117 | ||
673a394b EA |
118 | |
119 | /** | |
120 | * Creates a new mm object and returns a handle to it. | |
121 | */ | |
122 | int | |
123 | i915_gem_create_ioctl(struct drm_device *dev, void *data, | |
124 | struct drm_file *file_priv) | |
125 | { | |
126 | struct drm_i915_gem_create *args = data; | |
127 | struct drm_gem_object *obj; | |
a1a2d1d3 PP |
128 | int ret; |
129 | u32 handle; | |
673a394b EA |
130 | |
131 | args->size = roundup(args->size, PAGE_SIZE); | |
132 | ||
133 | /* Allocate the new object */ | |
ac52bc56 | 134 | obj = i915_gem_alloc_object(dev, args->size); |
673a394b EA |
135 | if (obj == NULL) |
136 | return -ENOMEM; | |
137 | ||
138 | ret = drm_gem_handle_create(file_priv, obj, &handle); | |
29d08b3e DA |
139 | /* drop reference from allocate - handle holds it now */ |
140 | drm_gem_object_unreference_unlocked(obj); | |
1dfd9754 | 141 | if (ret) { |
673a394b | 142 | return ret; |
1dfd9754 | 143 | } |
673a394b | 144 | |
1dfd9754 | 145 | args->handle = handle; |
673a394b EA |
146 | return 0; |
147 | } | |
148 | ||
eb01459f EA |
149 | static inline int |
150 | fast_shmem_read(struct page **pages, | |
151 | loff_t page_base, int page_offset, | |
152 | char __user *data, | |
153 | int length) | |
154 | { | |
155 | char __iomem *vaddr; | |
2bc43b5c | 156 | int unwritten; |
eb01459f EA |
157 | |
158 | vaddr = kmap_atomic(pages[page_base >> PAGE_SHIFT], KM_USER0); | |
159 | if (vaddr == NULL) | |
160 | return -ENOMEM; | |
2bc43b5c | 161 | unwritten = __copy_to_user_inatomic(data, vaddr + page_offset, length); |
eb01459f EA |
162 | kunmap_atomic(vaddr, KM_USER0); |
163 | ||
2bc43b5c FM |
164 | if (unwritten) |
165 | return -EFAULT; | |
166 | ||
167 | return 0; | |
eb01459f EA |
168 | } |
169 | ||
280b713b EA |
170 | static int i915_gem_object_needs_bit17_swizzle(struct drm_gem_object *obj) |
171 | { | |
172 | drm_i915_private_t *dev_priv = obj->dev->dev_private; | |
23010e43 | 173 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
280b713b EA |
174 | |
175 | return dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_9_10_17 && | |
176 | obj_priv->tiling_mode != I915_TILING_NONE; | |
177 | } | |
178 | ||
99a03df5 | 179 | static inline void |
40123c1f EA |
180 | slow_shmem_copy(struct page *dst_page, |
181 | int dst_offset, | |
182 | struct page *src_page, | |
183 | int src_offset, | |
184 | int length) | |
185 | { | |
186 | char *dst_vaddr, *src_vaddr; | |
187 | ||
99a03df5 CW |
188 | dst_vaddr = kmap(dst_page); |
189 | src_vaddr = kmap(src_page); | |
40123c1f EA |
190 | |
191 | memcpy(dst_vaddr + dst_offset, src_vaddr + src_offset, length); | |
192 | ||
99a03df5 CW |
193 | kunmap(src_page); |
194 | kunmap(dst_page); | |
40123c1f EA |
195 | } |
196 | ||
99a03df5 | 197 | static inline void |
280b713b EA |
198 | slow_shmem_bit17_copy(struct page *gpu_page, |
199 | int gpu_offset, | |
200 | struct page *cpu_page, | |
201 | int cpu_offset, | |
202 | int length, | |
203 | int is_read) | |
204 | { | |
205 | char *gpu_vaddr, *cpu_vaddr; | |
206 | ||
207 | /* Use the unswizzled path if this page isn't affected. */ | |
208 | if ((page_to_phys(gpu_page) & (1 << 17)) == 0) { | |
209 | if (is_read) | |
210 | return slow_shmem_copy(cpu_page, cpu_offset, | |
211 | gpu_page, gpu_offset, length); | |
212 | else | |
213 | return slow_shmem_copy(gpu_page, gpu_offset, | |
214 | cpu_page, cpu_offset, length); | |
215 | } | |
216 | ||
99a03df5 CW |
217 | gpu_vaddr = kmap(gpu_page); |
218 | cpu_vaddr = kmap(cpu_page); | |
280b713b EA |
219 | |
220 | /* Copy the data, XORing A6 with A17 (1). The user already knows he's | |
221 | * XORing with the other bits (A9 for Y, A9 and A10 for X) | |
222 | */ | |
223 | while (length > 0) { | |
224 | int cacheline_end = ALIGN(gpu_offset + 1, 64); | |
225 | int this_length = min(cacheline_end - gpu_offset, length); | |
226 | int swizzled_gpu_offset = gpu_offset ^ 64; | |
227 | ||
228 | if (is_read) { | |
229 | memcpy(cpu_vaddr + cpu_offset, | |
230 | gpu_vaddr + swizzled_gpu_offset, | |
231 | this_length); | |
232 | } else { | |
233 | memcpy(gpu_vaddr + swizzled_gpu_offset, | |
234 | cpu_vaddr + cpu_offset, | |
235 | this_length); | |
236 | } | |
237 | cpu_offset += this_length; | |
238 | gpu_offset += this_length; | |
239 | length -= this_length; | |
240 | } | |
241 | ||
99a03df5 CW |
242 | kunmap(cpu_page); |
243 | kunmap(gpu_page); | |
280b713b EA |
244 | } |
245 | ||
eb01459f EA |
246 | /** |
247 | * This is the fast shmem pread path, which attempts to copy_from_user directly | |
248 | * from the backing pages of the object to the user's address space. On a | |
249 | * fault, it fails so we can fall back to i915_gem_shmem_pwrite_slow(). | |
250 | */ | |
251 | static int | |
252 | i915_gem_shmem_pread_fast(struct drm_device *dev, struct drm_gem_object *obj, | |
253 | struct drm_i915_gem_pread *args, | |
254 | struct drm_file *file_priv) | |
255 | { | |
23010e43 | 256 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
eb01459f EA |
257 | ssize_t remain; |
258 | loff_t offset, page_base; | |
259 | char __user *user_data; | |
260 | int page_offset, page_length; | |
261 | int ret; | |
262 | ||
263 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
264 | remain = args->size; | |
265 | ||
266 | mutex_lock(&dev->struct_mutex); | |
267 | ||
4bdadb97 | 268 | ret = i915_gem_object_get_pages(obj, 0); |
eb01459f EA |
269 | if (ret != 0) |
270 | goto fail_unlock; | |
271 | ||
272 | ret = i915_gem_object_set_cpu_read_domain_range(obj, args->offset, | |
273 | args->size); | |
274 | if (ret != 0) | |
275 | goto fail_put_pages; | |
276 | ||
23010e43 | 277 | obj_priv = to_intel_bo(obj); |
eb01459f EA |
278 | offset = args->offset; |
279 | ||
280 | while (remain > 0) { | |
281 | /* Operation in this page | |
282 | * | |
283 | * page_base = page offset within aperture | |
284 | * page_offset = offset within page | |
285 | * page_length = bytes to copy for this page | |
286 | */ | |
287 | page_base = (offset & ~(PAGE_SIZE-1)); | |
288 | page_offset = offset & (PAGE_SIZE-1); | |
289 | page_length = remain; | |
290 | if ((page_offset + remain) > PAGE_SIZE) | |
291 | page_length = PAGE_SIZE - page_offset; | |
292 | ||
293 | ret = fast_shmem_read(obj_priv->pages, | |
294 | page_base, page_offset, | |
295 | user_data, page_length); | |
296 | if (ret) | |
297 | goto fail_put_pages; | |
298 | ||
299 | remain -= page_length; | |
300 | user_data += page_length; | |
301 | offset += page_length; | |
302 | } | |
303 | ||
304 | fail_put_pages: | |
305 | i915_gem_object_put_pages(obj); | |
306 | fail_unlock: | |
307 | mutex_unlock(&dev->struct_mutex); | |
308 | ||
309 | return ret; | |
310 | } | |
311 | ||
07f73f69 CW |
312 | static int |
313 | i915_gem_object_get_pages_or_evict(struct drm_gem_object *obj) | |
314 | { | |
315 | int ret; | |
316 | ||
4bdadb97 | 317 | ret = i915_gem_object_get_pages(obj, __GFP_NORETRY | __GFP_NOWARN); |
07f73f69 CW |
318 | |
319 | /* If we've insufficient memory to map in the pages, attempt | |
320 | * to make some space by throwing out some old buffers. | |
321 | */ | |
322 | if (ret == -ENOMEM) { | |
323 | struct drm_device *dev = obj->dev; | |
07f73f69 | 324 | |
0108a3ed DV |
325 | ret = i915_gem_evict_something(dev, obj->size, |
326 | i915_gem_get_gtt_alignment(obj)); | |
07f73f69 CW |
327 | if (ret) |
328 | return ret; | |
329 | ||
4bdadb97 | 330 | ret = i915_gem_object_get_pages(obj, 0); |
07f73f69 CW |
331 | } |
332 | ||
333 | return ret; | |
334 | } | |
335 | ||
eb01459f EA |
336 | /** |
337 | * This is the fallback shmem pread path, which allocates temporary storage | |
338 | * in kernel space to copy_to_user into outside of the struct_mutex, so we | |
339 | * can copy out of the object's backing pages while holding the struct mutex | |
340 | * and not take page faults. | |
341 | */ | |
342 | static int | |
343 | i915_gem_shmem_pread_slow(struct drm_device *dev, struct drm_gem_object *obj, | |
344 | struct drm_i915_gem_pread *args, | |
345 | struct drm_file *file_priv) | |
346 | { | |
23010e43 | 347 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
eb01459f EA |
348 | struct mm_struct *mm = current->mm; |
349 | struct page **user_pages; | |
350 | ssize_t remain; | |
351 | loff_t offset, pinned_pages, i; | |
352 | loff_t first_data_page, last_data_page, num_pages; | |
353 | int shmem_page_index, shmem_page_offset; | |
354 | int data_page_index, data_page_offset; | |
355 | int page_length; | |
356 | int ret; | |
357 | uint64_t data_ptr = args->data_ptr; | |
280b713b | 358 | int do_bit17_swizzling; |
eb01459f EA |
359 | |
360 | remain = args->size; | |
361 | ||
362 | /* Pin the user pages containing the data. We can't fault while | |
363 | * holding the struct mutex, yet we want to hold it while | |
364 | * dereferencing the user data. | |
365 | */ | |
366 | first_data_page = data_ptr / PAGE_SIZE; | |
367 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; | |
368 | num_pages = last_data_page - first_data_page + 1; | |
369 | ||
8e7d2b2c | 370 | user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); |
eb01459f EA |
371 | if (user_pages == NULL) |
372 | return -ENOMEM; | |
373 | ||
374 | down_read(&mm->mmap_sem); | |
375 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, | |
e5e9ecde | 376 | num_pages, 1, 0, user_pages, NULL); |
eb01459f EA |
377 | up_read(&mm->mmap_sem); |
378 | if (pinned_pages < num_pages) { | |
379 | ret = -EFAULT; | |
380 | goto fail_put_user_pages; | |
381 | } | |
382 | ||
280b713b EA |
383 | do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
384 | ||
eb01459f EA |
385 | mutex_lock(&dev->struct_mutex); |
386 | ||
07f73f69 CW |
387 | ret = i915_gem_object_get_pages_or_evict(obj); |
388 | if (ret) | |
eb01459f EA |
389 | goto fail_unlock; |
390 | ||
391 | ret = i915_gem_object_set_cpu_read_domain_range(obj, args->offset, | |
392 | args->size); | |
393 | if (ret != 0) | |
394 | goto fail_put_pages; | |
395 | ||
23010e43 | 396 | obj_priv = to_intel_bo(obj); |
eb01459f EA |
397 | offset = args->offset; |
398 | ||
399 | while (remain > 0) { | |
400 | /* Operation in this page | |
401 | * | |
402 | * shmem_page_index = page number within shmem file | |
403 | * shmem_page_offset = offset within page in shmem file | |
404 | * data_page_index = page number in get_user_pages return | |
405 | * data_page_offset = offset with data_page_index page. | |
406 | * page_length = bytes to copy for this page | |
407 | */ | |
408 | shmem_page_index = offset / PAGE_SIZE; | |
409 | shmem_page_offset = offset & ~PAGE_MASK; | |
410 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; | |
411 | data_page_offset = data_ptr & ~PAGE_MASK; | |
412 | ||
413 | page_length = remain; | |
414 | if ((shmem_page_offset + page_length) > PAGE_SIZE) | |
415 | page_length = PAGE_SIZE - shmem_page_offset; | |
416 | if ((data_page_offset + page_length) > PAGE_SIZE) | |
417 | page_length = PAGE_SIZE - data_page_offset; | |
418 | ||
280b713b | 419 | if (do_bit17_swizzling) { |
99a03df5 | 420 | slow_shmem_bit17_copy(obj_priv->pages[shmem_page_index], |
280b713b | 421 | shmem_page_offset, |
99a03df5 CW |
422 | user_pages[data_page_index], |
423 | data_page_offset, | |
424 | page_length, | |
425 | 1); | |
426 | } else { | |
427 | slow_shmem_copy(user_pages[data_page_index], | |
428 | data_page_offset, | |
429 | obj_priv->pages[shmem_page_index], | |
430 | shmem_page_offset, | |
431 | page_length); | |
280b713b | 432 | } |
eb01459f EA |
433 | |
434 | remain -= page_length; | |
435 | data_ptr += page_length; | |
436 | offset += page_length; | |
437 | } | |
438 | ||
439 | fail_put_pages: | |
440 | i915_gem_object_put_pages(obj); | |
441 | fail_unlock: | |
442 | mutex_unlock(&dev->struct_mutex); | |
443 | fail_put_user_pages: | |
444 | for (i = 0; i < pinned_pages; i++) { | |
445 | SetPageDirty(user_pages[i]); | |
446 | page_cache_release(user_pages[i]); | |
447 | } | |
8e7d2b2c | 448 | drm_free_large(user_pages); |
eb01459f EA |
449 | |
450 | return ret; | |
451 | } | |
452 | ||
673a394b EA |
453 | /** |
454 | * Reads data from the object referenced by handle. | |
455 | * | |
456 | * On error, the contents of *data are undefined. | |
457 | */ | |
458 | int | |
459 | i915_gem_pread_ioctl(struct drm_device *dev, void *data, | |
460 | struct drm_file *file_priv) | |
461 | { | |
462 | struct drm_i915_gem_pread *args = data; | |
463 | struct drm_gem_object *obj; | |
464 | struct drm_i915_gem_object *obj_priv; | |
673a394b EA |
465 | int ret; |
466 | ||
467 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
468 | if (obj == NULL) | |
bf79cb91 | 469 | return -ENOENT; |
23010e43 | 470 | obj_priv = to_intel_bo(obj); |
673a394b | 471 | |
7dcd2499 CW |
472 | /* Bounds check source. */ |
473 | if (args->offset > obj->size || args->size > obj->size - args->offset) { | |
ce9d419d CW |
474 | ret = -EINVAL; |
475 | goto err; | |
476 | } | |
477 | ||
478 | if (!access_ok(VERIFY_WRITE, | |
479 | (char __user *)(uintptr_t)args->data_ptr, | |
480 | args->size)) { | |
481 | ret = -EFAULT; | |
482 | goto err; | |
673a394b EA |
483 | } |
484 | ||
280b713b | 485 | if (i915_gem_object_needs_bit17_swizzle(obj)) { |
eb01459f | 486 | ret = i915_gem_shmem_pread_slow(dev, obj, args, file_priv); |
280b713b EA |
487 | } else { |
488 | ret = i915_gem_shmem_pread_fast(dev, obj, args, file_priv); | |
489 | if (ret != 0) | |
490 | ret = i915_gem_shmem_pread_slow(dev, obj, args, | |
491 | file_priv); | |
492 | } | |
673a394b | 493 | |
ce9d419d | 494 | err: |
bc9025bd | 495 | drm_gem_object_unreference_unlocked(obj); |
eb01459f | 496 | return ret; |
673a394b EA |
497 | } |
498 | ||
0839ccb8 KP |
499 | /* This is the fast write path which cannot handle |
500 | * page faults in the source data | |
9b7530cc | 501 | */ |
0839ccb8 KP |
502 | |
503 | static inline int | |
504 | fast_user_write(struct io_mapping *mapping, | |
505 | loff_t page_base, int page_offset, | |
506 | char __user *user_data, | |
507 | int length) | |
9b7530cc | 508 | { |
9b7530cc | 509 | char *vaddr_atomic; |
0839ccb8 | 510 | unsigned long unwritten; |
9b7530cc | 511 | |
fca3ec01 | 512 | vaddr_atomic = io_mapping_map_atomic_wc(mapping, page_base, KM_USER0); |
0839ccb8 KP |
513 | unwritten = __copy_from_user_inatomic_nocache(vaddr_atomic + page_offset, |
514 | user_data, length); | |
fca3ec01 | 515 | io_mapping_unmap_atomic(vaddr_atomic, KM_USER0); |
0839ccb8 KP |
516 | if (unwritten) |
517 | return -EFAULT; | |
518 | return 0; | |
519 | } | |
520 | ||
521 | /* Here's the write path which can sleep for | |
522 | * page faults | |
523 | */ | |
524 | ||
ab34c226 | 525 | static inline void |
3de09aa3 EA |
526 | slow_kernel_write(struct io_mapping *mapping, |
527 | loff_t gtt_base, int gtt_offset, | |
528 | struct page *user_page, int user_offset, | |
529 | int length) | |
0839ccb8 | 530 | { |
ab34c226 CW |
531 | char __iomem *dst_vaddr; |
532 | char *src_vaddr; | |
0839ccb8 | 533 | |
ab34c226 CW |
534 | dst_vaddr = io_mapping_map_wc(mapping, gtt_base); |
535 | src_vaddr = kmap(user_page); | |
536 | ||
537 | memcpy_toio(dst_vaddr + gtt_offset, | |
538 | src_vaddr + user_offset, | |
539 | length); | |
540 | ||
541 | kunmap(user_page); | |
542 | io_mapping_unmap(dst_vaddr); | |
9b7530cc LT |
543 | } |
544 | ||
40123c1f EA |
545 | static inline int |
546 | fast_shmem_write(struct page **pages, | |
547 | loff_t page_base, int page_offset, | |
548 | char __user *data, | |
549 | int length) | |
550 | { | |
551 | char __iomem *vaddr; | |
d0088775 | 552 | unsigned long unwritten; |
40123c1f EA |
553 | |
554 | vaddr = kmap_atomic(pages[page_base >> PAGE_SHIFT], KM_USER0); | |
555 | if (vaddr == NULL) | |
556 | return -ENOMEM; | |
d0088775 | 557 | unwritten = __copy_from_user_inatomic(vaddr + page_offset, data, length); |
40123c1f EA |
558 | kunmap_atomic(vaddr, KM_USER0); |
559 | ||
d0088775 DA |
560 | if (unwritten) |
561 | return -EFAULT; | |
40123c1f EA |
562 | return 0; |
563 | } | |
564 | ||
3de09aa3 EA |
565 | /** |
566 | * This is the fast pwrite path, where we copy the data directly from the | |
567 | * user into the GTT, uncached. | |
568 | */ | |
673a394b | 569 | static int |
3de09aa3 EA |
570 | i915_gem_gtt_pwrite_fast(struct drm_device *dev, struct drm_gem_object *obj, |
571 | struct drm_i915_gem_pwrite *args, | |
572 | struct drm_file *file_priv) | |
673a394b | 573 | { |
23010e43 | 574 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
0839ccb8 | 575 | drm_i915_private_t *dev_priv = dev->dev_private; |
673a394b | 576 | ssize_t remain; |
0839ccb8 | 577 | loff_t offset, page_base; |
673a394b | 578 | char __user *user_data; |
0839ccb8 KP |
579 | int page_offset, page_length; |
580 | int ret; | |
673a394b EA |
581 | |
582 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
583 | remain = args->size; | |
673a394b EA |
584 | |
585 | ||
586 | mutex_lock(&dev->struct_mutex); | |
587 | ret = i915_gem_object_pin(obj, 0); | |
588 | if (ret) { | |
589 | mutex_unlock(&dev->struct_mutex); | |
590 | return ret; | |
591 | } | |
2ef7eeaa | 592 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); |
673a394b EA |
593 | if (ret) |
594 | goto fail; | |
595 | ||
23010e43 | 596 | obj_priv = to_intel_bo(obj); |
673a394b | 597 | offset = obj_priv->gtt_offset + args->offset; |
673a394b EA |
598 | |
599 | while (remain > 0) { | |
600 | /* Operation in this page | |
601 | * | |
0839ccb8 KP |
602 | * page_base = page offset within aperture |
603 | * page_offset = offset within page | |
604 | * page_length = bytes to copy for this page | |
673a394b | 605 | */ |
0839ccb8 KP |
606 | page_base = (offset & ~(PAGE_SIZE-1)); |
607 | page_offset = offset & (PAGE_SIZE-1); | |
608 | page_length = remain; | |
609 | if ((page_offset + remain) > PAGE_SIZE) | |
610 | page_length = PAGE_SIZE - page_offset; | |
611 | ||
612 | ret = fast_user_write (dev_priv->mm.gtt_mapping, page_base, | |
613 | page_offset, user_data, page_length); | |
614 | ||
615 | /* If we get a fault while copying data, then (presumably) our | |
3de09aa3 EA |
616 | * source page isn't available. Return the error and we'll |
617 | * retry in the slow path. | |
0839ccb8 | 618 | */ |
3de09aa3 EA |
619 | if (ret) |
620 | goto fail; | |
673a394b | 621 | |
0839ccb8 KP |
622 | remain -= page_length; |
623 | user_data += page_length; | |
624 | offset += page_length; | |
673a394b | 625 | } |
673a394b EA |
626 | |
627 | fail: | |
628 | i915_gem_object_unpin(obj); | |
629 | mutex_unlock(&dev->struct_mutex); | |
630 | ||
631 | return ret; | |
632 | } | |
633 | ||
3de09aa3 EA |
634 | /** |
635 | * This is the fallback GTT pwrite path, which uses get_user_pages to pin | |
636 | * the memory and maps it using kmap_atomic for copying. | |
637 | * | |
638 | * This code resulted in x11perf -rgb10text consuming about 10% more CPU | |
639 | * than using i915_gem_gtt_pwrite_fast on a G45 (32-bit). | |
640 | */ | |
3043c60c | 641 | static int |
3de09aa3 EA |
642 | i915_gem_gtt_pwrite_slow(struct drm_device *dev, struct drm_gem_object *obj, |
643 | struct drm_i915_gem_pwrite *args, | |
644 | struct drm_file *file_priv) | |
673a394b | 645 | { |
23010e43 | 646 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
3de09aa3 EA |
647 | drm_i915_private_t *dev_priv = dev->dev_private; |
648 | ssize_t remain; | |
649 | loff_t gtt_page_base, offset; | |
650 | loff_t first_data_page, last_data_page, num_pages; | |
651 | loff_t pinned_pages, i; | |
652 | struct page **user_pages; | |
653 | struct mm_struct *mm = current->mm; | |
654 | int gtt_page_offset, data_page_offset, data_page_index, page_length; | |
673a394b | 655 | int ret; |
3de09aa3 EA |
656 | uint64_t data_ptr = args->data_ptr; |
657 | ||
658 | remain = args->size; | |
659 | ||
660 | /* Pin the user pages containing the data. We can't fault while | |
661 | * holding the struct mutex, and all of the pwrite implementations | |
662 | * want to hold it while dereferencing the user data. | |
663 | */ | |
664 | first_data_page = data_ptr / PAGE_SIZE; | |
665 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; | |
666 | num_pages = last_data_page - first_data_page + 1; | |
667 | ||
8e7d2b2c | 668 | user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); |
3de09aa3 EA |
669 | if (user_pages == NULL) |
670 | return -ENOMEM; | |
671 | ||
672 | down_read(&mm->mmap_sem); | |
673 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, | |
674 | num_pages, 0, 0, user_pages, NULL); | |
675 | up_read(&mm->mmap_sem); | |
676 | if (pinned_pages < num_pages) { | |
677 | ret = -EFAULT; | |
678 | goto out_unpin_pages; | |
679 | } | |
673a394b EA |
680 | |
681 | mutex_lock(&dev->struct_mutex); | |
3de09aa3 EA |
682 | ret = i915_gem_object_pin(obj, 0); |
683 | if (ret) | |
684 | goto out_unlock; | |
685 | ||
686 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); | |
687 | if (ret) | |
688 | goto out_unpin_object; | |
689 | ||
23010e43 | 690 | obj_priv = to_intel_bo(obj); |
3de09aa3 EA |
691 | offset = obj_priv->gtt_offset + args->offset; |
692 | ||
693 | while (remain > 0) { | |
694 | /* Operation in this page | |
695 | * | |
696 | * gtt_page_base = page offset within aperture | |
697 | * gtt_page_offset = offset within page in aperture | |
698 | * data_page_index = page number in get_user_pages return | |
699 | * data_page_offset = offset with data_page_index page. | |
700 | * page_length = bytes to copy for this page | |
701 | */ | |
702 | gtt_page_base = offset & PAGE_MASK; | |
703 | gtt_page_offset = offset & ~PAGE_MASK; | |
704 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; | |
705 | data_page_offset = data_ptr & ~PAGE_MASK; | |
706 | ||
707 | page_length = remain; | |
708 | if ((gtt_page_offset + page_length) > PAGE_SIZE) | |
709 | page_length = PAGE_SIZE - gtt_page_offset; | |
710 | if ((data_page_offset + page_length) > PAGE_SIZE) | |
711 | page_length = PAGE_SIZE - data_page_offset; | |
712 | ||
ab34c226 CW |
713 | slow_kernel_write(dev_priv->mm.gtt_mapping, |
714 | gtt_page_base, gtt_page_offset, | |
715 | user_pages[data_page_index], | |
716 | data_page_offset, | |
717 | page_length); | |
3de09aa3 EA |
718 | |
719 | remain -= page_length; | |
720 | offset += page_length; | |
721 | data_ptr += page_length; | |
722 | } | |
723 | ||
724 | out_unpin_object: | |
725 | i915_gem_object_unpin(obj); | |
726 | out_unlock: | |
727 | mutex_unlock(&dev->struct_mutex); | |
728 | out_unpin_pages: | |
729 | for (i = 0; i < pinned_pages; i++) | |
730 | page_cache_release(user_pages[i]); | |
8e7d2b2c | 731 | drm_free_large(user_pages); |
3de09aa3 EA |
732 | |
733 | return ret; | |
734 | } | |
735 | ||
40123c1f EA |
736 | /** |
737 | * This is the fast shmem pwrite path, which attempts to directly | |
738 | * copy_from_user into the kmapped pages backing the object. | |
739 | */ | |
3043c60c | 740 | static int |
40123c1f EA |
741 | i915_gem_shmem_pwrite_fast(struct drm_device *dev, struct drm_gem_object *obj, |
742 | struct drm_i915_gem_pwrite *args, | |
743 | struct drm_file *file_priv) | |
673a394b | 744 | { |
23010e43 | 745 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
40123c1f EA |
746 | ssize_t remain; |
747 | loff_t offset, page_base; | |
748 | char __user *user_data; | |
749 | int page_offset, page_length; | |
673a394b | 750 | int ret; |
40123c1f EA |
751 | |
752 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
753 | remain = args->size; | |
673a394b EA |
754 | |
755 | mutex_lock(&dev->struct_mutex); | |
756 | ||
4bdadb97 | 757 | ret = i915_gem_object_get_pages(obj, 0); |
40123c1f EA |
758 | if (ret != 0) |
759 | goto fail_unlock; | |
673a394b | 760 | |
e47c68e9 | 761 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
40123c1f EA |
762 | if (ret != 0) |
763 | goto fail_put_pages; | |
764 | ||
23010e43 | 765 | obj_priv = to_intel_bo(obj); |
40123c1f EA |
766 | offset = args->offset; |
767 | obj_priv->dirty = 1; | |
768 | ||
769 | while (remain > 0) { | |
770 | /* Operation in this page | |
771 | * | |
772 | * page_base = page offset within aperture | |
773 | * page_offset = offset within page | |
774 | * page_length = bytes to copy for this page | |
775 | */ | |
776 | page_base = (offset & ~(PAGE_SIZE-1)); | |
777 | page_offset = offset & (PAGE_SIZE-1); | |
778 | page_length = remain; | |
779 | if ((page_offset + remain) > PAGE_SIZE) | |
780 | page_length = PAGE_SIZE - page_offset; | |
781 | ||
782 | ret = fast_shmem_write(obj_priv->pages, | |
783 | page_base, page_offset, | |
784 | user_data, page_length); | |
785 | if (ret) | |
786 | goto fail_put_pages; | |
787 | ||
788 | remain -= page_length; | |
789 | user_data += page_length; | |
790 | offset += page_length; | |
791 | } | |
792 | ||
793 | fail_put_pages: | |
794 | i915_gem_object_put_pages(obj); | |
795 | fail_unlock: | |
796 | mutex_unlock(&dev->struct_mutex); | |
797 | ||
798 | return ret; | |
799 | } | |
800 | ||
801 | /** | |
802 | * This is the fallback shmem pwrite path, which uses get_user_pages to pin | |
803 | * the memory and maps it using kmap_atomic for copying. | |
804 | * | |
805 | * This avoids taking mmap_sem for faulting on the user's address while the | |
806 | * struct_mutex is held. | |
807 | */ | |
808 | static int | |
809 | i915_gem_shmem_pwrite_slow(struct drm_device *dev, struct drm_gem_object *obj, | |
810 | struct drm_i915_gem_pwrite *args, | |
811 | struct drm_file *file_priv) | |
812 | { | |
23010e43 | 813 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
40123c1f EA |
814 | struct mm_struct *mm = current->mm; |
815 | struct page **user_pages; | |
816 | ssize_t remain; | |
817 | loff_t offset, pinned_pages, i; | |
818 | loff_t first_data_page, last_data_page, num_pages; | |
819 | int shmem_page_index, shmem_page_offset; | |
820 | int data_page_index, data_page_offset; | |
821 | int page_length; | |
822 | int ret; | |
823 | uint64_t data_ptr = args->data_ptr; | |
280b713b | 824 | int do_bit17_swizzling; |
40123c1f EA |
825 | |
826 | remain = args->size; | |
827 | ||
828 | /* Pin the user pages containing the data. We can't fault while | |
829 | * holding the struct mutex, and all of the pwrite implementations | |
830 | * want to hold it while dereferencing the user data. | |
831 | */ | |
832 | first_data_page = data_ptr / PAGE_SIZE; | |
833 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; | |
834 | num_pages = last_data_page - first_data_page + 1; | |
835 | ||
8e7d2b2c | 836 | user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); |
40123c1f EA |
837 | if (user_pages == NULL) |
838 | return -ENOMEM; | |
839 | ||
840 | down_read(&mm->mmap_sem); | |
841 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, | |
842 | num_pages, 0, 0, user_pages, NULL); | |
843 | up_read(&mm->mmap_sem); | |
844 | if (pinned_pages < num_pages) { | |
845 | ret = -EFAULT; | |
846 | goto fail_put_user_pages; | |
673a394b EA |
847 | } |
848 | ||
280b713b EA |
849 | do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
850 | ||
40123c1f EA |
851 | mutex_lock(&dev->struct_mutex); |
852 | ||
07f73f69 CW |
853 | ret = i915_gem_object_get_pages_or_evict(obj); |
854 | if (ret) | |
40123c1f EA |
855 | goto fail_unlock; |
856 | ||
857 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); | |
858 | if (ret != 0) | |
859 | goto fail_put_pages; | |
860 | ||
23010e43 | 861 | obj_priv = to_intel_bo(obj); |
673a394b | 862 | offset = args->offset; |
40123c1f | 863 | obj_priv->dirty = 1; |
673a394b | 864 | |
40123c1f EA |
865 | while (remain > 0) { |
866 | /* Operation in this page | |
867 | * | |
868 | * shmem_page_index = page number within shmem file | |
869 | * shmem_page_offset = offset within page in shmem file | |
870 | * data_page_index = page number in get_user_pages return | |
871 | * data_page_offset = offset with data_page_index page. | |
872 | * page_length = bytes to copy for this page | |
873 | */ | |
874 | shmem_page_index = offset / PAGE_SIZE; | |
875 | shmem_page_offset = offset & ~PAGE_MASK; | |
876 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; | |
877 | data_page_offset = data_ptr & ~PAGE_MASK; | |
878 | ||
879 | page_length = remain; | |
880 | if ((shmem_page_offset + page_length) > PAGE_SIZE) | |
881 | page_length = PAGE_SIZE - shmem_page_offset; | |
882 | if ((data_page_offset + page_length) > PAGE_SIZE) | |
883 | page_length = PAGE_SIZE - data_page_offset; | |
884 | ||
280b713b | 885 | if (do_bit17_swizzling) { |
99a03df5 | 886 | slow_shmem_bit17_copy(obj_priv->pages[shmem_page_index], |
280b713b EA |
887 | shmem_page_offset, |
888 | user_pages[data_page_index], | |
889 | data_page_offset, | |
99a03df5 CW |
890 | page_length, |
891 | 0); | |
892 | } else { | |
893 | slow_shmem_copy(obj_priv->pages[shmem_page_index], | |
894 | shmem_page_offset, | |
895 | user_pages[data_page_index], | |
896 | data_page_offset, | |
897 | page_length); | |
280b713b | 898 | } |
40123c1f EA |
899 | |
900 | remain -= page_length; | |
901 | data_ptr += page_length; | |
902 | offset += page_length; | |
673a394b EA |
903 | } |
904 | ||
40123c1f EA |
905 | fail_put_pages: |
906 | i915_gem_object_put_pages(obj); | |
907 | fail_unlock: | |
673a394b | 908 | mutex_unlock(&dev->struct_mutex); |
40123c1f EA |
909 | fail_put_user_pages: |
910 | for (i = 0; i < pinned_pages; i++) | |
911 | page_cache_release(user_pages[i]); | |
8e7d2b2c | 912 | drm_free_large(user_pages); |
673a394b | 913 | |
40123c1f | 914 | return ret; |
673a394b EA |
915 | } |
916 | ||
917 | /** | |
918 | * Writes data to the object referenced by handle. | |
919 | * | |
920 | * On error, the contents of the buffer that were to be modified are undefined. | |
921 | */ | |
922 | int | |
923 | i915_gem_pwrite_ioctl(struct drm_device *dev, void *data, | |
924 | struct drm_file *file_priv) | |
925 | { | |
926 | struct drm_i915_gem_pwrite *args = data; | |
927 | struct drm_gem_object *obj; | |
928 | struct drm_i915_gem_object *obj_priv; | |
929 | int ret = 0; | |
930 | ||
931 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
932 | if (obj == NULL) | |
bf79cb91 | 933 | return -ENOENT; |
23010e43 | 934 | obj_priv = to_intel_bo(obj); |
673a394b | 935 | |
7dcd2499 CW |
936 | /* Bounds check destination. */ |
937 | if (args->offset > obj->size || args->size > obj->size - args->offset) { | |
ce9d419d CW |
938 | ret = -EINVAL; |
939 | goto err; | |
940 | } | |
941 | ||
942 | if (!access_ok(VERIFY_READ, | |
943 | (char __user *)(uintptr_t)args->data_ptr, | |
944 | args->size)) { | |
945 | ret = -EFAULT; | |
946 | goto err; | |
673a394b EA |
947 | } |
948 | ||
949 | /* We can only do the GTT pwrite on untiled buffers, as otherwise | |
950 | * it would end up going through the fenced access, and we'll get | |
951 | * different detiling behavior between reading and writing. | |
952 | * pread/pwrite currently are reading and writing from the CPU | |
953 | * perspective, requiring manual detiling by the client. | |
954 | */ | |
71acb5eb DA |
955 | if (obj_priv->phys_obj) |
956 | ret = i915_gem_phys_pwrite(dev, obj, args, file_priv); | |
957 | else if (obj_priv->tiling_mode == I915_TILING_NONE && | |
9b8c4a0b CW |
958 | dev->gtt_total != 0 && |
959 | obj->write_domain != I915_GEM_DOMAIN_CPU) { | |
3de09aa3 EA |
960 | ret = i915_gem_gtt_pwrite_fast(dev, obj, args, file_priv); |
961 | if (ret == -EFAULT) { | |
962 | ret = i915_gem_gtt_pwrite_slow(dev, obj, args, | |
963 | file_priv); | |
964 | } | |
280b713b EA |
965 | } else if (i915_gem_object_needs_bit17_swizzle(obj)) { |
966 | ret = i915_gem_shmem_pwrite_slow(dev, obj, args, file_priv); | |
40123c1f EA |
967 | } else { |
968 | ret = i915_gem_shmem_pwrite_fast(dev, obj, args, file_priv); | |
969 | if (ret == -EFAULT) { | |
970 | ret = i915_gem_shmem_pwrite_slow(dev, obj, args, | |
971 | file_priv); | |
972 | } | |
973 | } | |
673a394b EA |
974 | |
975 | #if WATCH_PWRITE | |
976 | if (ret) | |
977 | DRM_INFO("pwrite failed %d\n", ret); | |
978 | #endif | |
979 | ||
ce9d419d | 980 | err: |
bc9025bd | 981 | drm_gem_object_unreference_unlocked(obj); |
673a394b EA |
982 | return ret; |
983 | } | |
984 | ||
985 | /** | |
2ef7eeaa EA |
986 | * Called when user space prepares to use an object with the CPU, either |
987 | * through the mmap ioctl's mapping or a GTT mapping. | |
673a394b EA |
988 | */ |
989 | int | |
990 | i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, | |
991 | struct drm_file *file_priv) | |
992 | { | |
a09ba7fa | 993 | struct drm_i915_private *dev_priv = dev->dev_private; |
673a394b EA |
994 | struct drm_i915_gem_set_domain *args = data; |
995 | struct drm_gem_object *obj; | |
652c393a | 996 | struct drm_i915_gem_object *obj_priv; |
2ef7eeaa EA |
997 | uint32_t read_domains = args->read_domains; |
998 | uint32_t write_domain = args->write_domain; | |
673a394b EA |
999 | int ret; |
1000 | ||
1001 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1002 | return -ENODEV; | |
1003 | ||
2ef7eeaa | 1004 | /* Only handle setting domains to types used by the CPU. */ |
21d509e3 | 1005 | if (write_domain & I915_GEM_GPU_DOMAINS) |
2ef7eeaa EA |
1006 | return -EINVAL; |
1007 | ||
21d509e3 | 1008 | if (read_domains & I915_GEM_GPU_DOMAINS) |
2ef7eeaa EA |
1009 | return -EINVAL; |
1010 | ||
1011 | /* Having something in the write domain implies it's in the read | |
1012 | * domain, and only that read domain. Enforce that in the request. | |
1013 | */ | |
1014 | if (write_domain != 0 && read_domains != write_domain) | |
1015 | return -EINVAL; | |
1016 | ||
673a394b EA |
1017 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
1018 | if (obj == NULL) | |
bf79cb91 | 1019 | return -ENOENT; |
23010e43 | 1020 | obj_priv = to_intel_bo(obj); |
673a394b EA |
1021 | |
1022 | mutex_lock(&dev->struct_mutex); | |
652c393a JB |
1023 | |
1024 | intel_mark_busy(dev, obj); | |
1025 | ||
673a394b | 1026 | #if WATCH_BUF |
cfd43c02 | 1027 | DRM_INFO("set_domain_ioctl %p(%zd), %08x %08x\n", |
2ef7eeaa | 1028 | obj, obj->size, read_domains, write_domain); |
673a394b | 1029 | #endif |
2ef7eeaa EA |
1030 | if (read_domains & I915_GEM_DOMAIN_GTT) { |
1031 | ret = i915_gem_object_set_to_gtt_domain(obj, write_domain != 0); | |
02354392 | 1032 | |
a09ba7fa EA |
1033 | /* Update the LRU on the fence for the CPU access that's |
1034 | * about to occur. | |
1035 | */ | |
1036 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) { | |
007cc8ac DV |
1037 | struct drm_i915_fence_reg *reg = |
1038 | &dev_priv->fence_regs[obj_priv->fence_reg]; | |
1039 | list_move_tail(®->lru_list, | |
a09ba7fa EA |
1040 | &dev_priv->mm.fence_list); |
1041 | } | |
1042 | ||
02354392 EA |
1043 | /* Silently promote "you're not bound, there was nothing to do" |
1044 | * to success, since the client was just asking us to | |
1045 | * make sure everything was done. | |
1046 | */ | |
1047 | if (ret == -EINVAL) | |
1048 | ret = 0; | |
2ef7eeaa | 1049 | } else { |
e47c68e9 | 1050 | ret = i915_gem_object_set_to_cpu_domain(obj, write_domain != 0); |
2ef7eeaa EA |
1051 | } |
1052 | ||
7d1c4804 CW |
1053 | |
1054 | /* Maintain LRU order of "inactive" objects */ | |
1055 | if (ret == 0 && i915_gem_object_is_inactive(obj_priv)) | |
1056 | list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list); | |
1057 | ||
673a394b EA |
1058 | drm_gem_object_unreference(obj); |
1059 | mutex_unlock(&dev->struct_mutex); | |
1060 | return ret; | |
1061 | } | |
1062 | ||
1063 | /** | |
1064 | * Called when user space has done writes to this buffer | |
1065 | */ | |
1066 | int | |
1067 | i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data, | |
1068 | struct drm_file *file_priv) | |
1069 | { | |
1070 | struct drm_i915_gem_sw_finish *args = data; | |
1071 | struct drm_gem_object *obj; | |
1072 | struct drm_i915_gem_object *obj_priv; | |
1073 | int ret = 0; | |
1074 | ||
1075 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1076 | return -ENODEV; | |
1077 | ||
1078 | mutex_lock(&dev->struct_mutex); | |
1079 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
1080 | if (obj == NULL) { | |
1081 | mutex_unlock(&dev->struct_mutex); | |
bf79cb91 | 1082 | return -ENOENT; |
673a394b EA |
1083 | } |
1084 | ||
1085 | #if WATCH_BUF | |
cfd43c02 | 1086 | DRM_INFO("%s: sw_finish %d (%p %zd)\n", |
673a394b EA |
1087 | __func__, args->handle, obj, obj->size); |
1088 | #endif | |
23010e43 | 1089 | obj_priv = to_intel_bo(obj); |
673a394b EA |
1090 | |
1091 | /* Pinned buffers may be scanout, so flush the cache */ | |
e47c68e9 EA |
1092 | if (obj_priv->pin_count) |
1093 | i915_gem_object_flush_cpu_write_domain(obj); | |
1094 | ||
673a394b EA |
1095 | drm_gem_object_unreference(obj); |
1096 | mutex_unlock(&dev->struct_mutex); | |
1097 | return ret; | |
1098 | } | |
1099 | ||
1100 | /** | |
1101 | * Maps the contents of an object, returning the address it is mapped | |
1102 | * into. | |
1103 | * | |
1104 | * While the mapping holds a reference on the contents of the object, it doesn't | |
1105 | * imply a ref on the object itself. | |
1106 | */ | |
1107 | int | |
1108 | i915_gem_mmap_ioctl(struct drm_device *dev, void *data, | |
1109 | struct drm_file *file_priv) | |
1110 | { | |
1111 | struct drm_i915_gem_mmap *args = data; | |
1112 | struct drm_gem_object *obj; | |
1113 | loff_t offset; | |
1114 | unsigned long addr; | |
1115 | ||
1116 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1117 | return -ENODEV; | |
1118 | ||
1119 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
1120 | if (obj == NULL) | |
bf79cb91 | 1121 | return -ENOENT; |
673a394b EA |
1122 | |
1123 | offset = args->offset; | |
1124 | ||
1125 | down_write(¤t->mm->mmap_sem); | |
1126 | addr = do_mmap(obj->filp, 0, args->size, | |
1127 | PROT_READ | PROT_WRITE, MAP_SHARED, | |
1128 | args->offset); | |
1129 | up_write(¤t->mm->mmap_sem); | |
bc9025bd | 1130 | drm_gem_object_unreference_unlocked(obj); |
673a394b EA |
1131 | if (IS_ERR((void *)addr)) |
1132 | return addr; | |
1133 | ||
1134 | args->addr_ptr = (uint64_t) addr; | |
1135 | ||
1136 | return 0; | |
1137 | } | |
1138 | ||
de151cf6 JB |
1139 | /** |
1140 | * i915_gem_fault - fault a page into the GTT | |
1141 | * vma: VMA in question | |
1142 | * vmf: fault info | |
1143 | * | |
1144 | * The fault handler is set up by drm_gem_mmap() when a object is GTT mapped | |
1145 | * from userspace. The fault handler takes care of binding the object to | |
1146 | * the GTT (if needed), allocating and programming a fence register (again, | |
1147 | * only if needed based on whether the old reg is still valid or the object | |
1148 | * is tiled) and inserting a new PTE into the faulting process. | |
1149 | * | |
1150 | * Note that the faulting process may involve evicting existing objects | |
1151 | * from the GTT and/or fence registers to make room. So performance may | |
1152 | * suffer if the GTT working set is large or there are few fence registers | |
1153 | * left. | |
1154 | */ | |
1155 | int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
1156 | { | |
1157 | struct drm_gem_object *obj = vma->vm_private_data; | |
1158 | struct drm_device *dev = obj->dev; | |
7d1c4804 | 1159 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 1160 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
1161 | pgoff_t page_offset; |
1162 | unsigned long pfn; | |
1163 | int ret = 0; | |
0f973f27 | 1164 | bool write = !!(vmf->flags & FAULT_FLAG_WRITE); |
de151cf6 JB |
1165 | |
1166 | /* We don't use vmf->pgoff since that has the fake offset */ | |
1167 | page_offset = ((unsigned long)vmf->virtual_address - vma->vm_start) >> | |
1168 | PAGE_SHIFT; | |
1169 | ||
1170 | /* Now bind it into the GTT if needed */ | |
1171 | mutex_lock(&dev->struct_mutex); | |
1172 | if (!obj_priv->gtt_space) { | |
e67b8ce1 | 1173 | ret = i915_gem_object_bind_to_gtt(obj, 0); |
c715089f CW |
1174 | if (ret) |
1175 | goto unlock; | |
07f4f3e8 | 1176 | |
07f4f3e8 | 1177 | ret = i915_gem_object_set_to_gtt_domain(obj, write); |
c715089f CW |
1178 | if (ret) |
1179 | goto unlock; | |
de151cf6 JB |
1180 | } |
1181 | ||
1182 | /* Need a new fence register? */ | |
a09ba7fa | 1183 | if (obj_priv->tiling_mode != I915_TILING_NONE) { |
8c4b8c3f | 1184 | ret = i915_gem_object_get_fence_reg(obj); |
c715089f CW |
1185 | if (ret) |
1186 | goto unlock; | |
d9ddcb96 | 1187 | } |
de151cf6 | 1188 | |
7d1c4804 CW |
1189 | if (i915_gem_object_is_inactive(obj_priv)) |
1190 | list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list); | |
1191 | ||
de151cf6 JB |
1192 | pfn = ((dev->agp->base + obj_priv->gtt_offset) >> PAGE_SHIFT) + |
1193 | page_offset; | |
1194 | ||
1195 | /* Finally, remap it using the new GTT offset */ | |
1196 | ret = vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, pfn); | |
c715089f | 1197 | unlock: |
de151cf6 JB |
1198 | mutex_unlock(&dev->struct_mutex); |
1199 | ||
1200 | switch (ret) { | |
c715089f CW |
1201 | case 0: |
1202 | case -ERESTARTSYS: | |
1203 | return VM_FAULT_NOPAGE; | |
de151cf6 JB |
1204 | case -ENOMEM: |
1205 | case -EAGAIN: | |
1206 | return VM_FAULT_OOM; | |
de151cf6 | 1207 | default: |
c715089f | 1208 | return VM_FAULT_SIGBUS; |
de151cf6 JB |
1209 | } |
1210 | } | |
1211 | ||
1212 | /** | |
1213 | * i915_gem_create_mmap_offset - create a fake mmap offset for an object | |
1214 | * @obj: obj in question | |
1215 | * | |
1216 | * GEM memory mapping works by handing back to userspace a fake mmap offset | |
1217 | * it can use in a subsequent mmap(2) call. The DRM core code then looks | |
1218 | * up the object based on the offset and sets up the various memory mapping | |
1219 | * structures. | |
1220 | * | |
1221 | * This routine allocates and attaches a fake offset for @obj. | |
1222 | */ | |
1223 | static int | |
1224 | i915_gem_create_mmap_offset(struct drm_gem_object *obj) | |
1225 | { | |
1226 | struct drm_device *dev = obj->dev; | |
1227 | struct drm_gem_mm *mm = dev->mm_private; | |
23010e43 | 1228 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 | 1229 | struct drm_map_list *list; |
f77d390c | 1230 | struct drm_local_map *map; |
de151cf6 JB |
1231 | int ret = 0; |
1232 | ||
1233 | /* Set the object up for mmap'ing */ | |
1234 | list = &obj->map_list; | |
9a298b2a | 1235 | list->map = kzalloc(sizeof(struct drm_map_list), GFP_KERNEL); |
de151cf6 JB |
1236 | if (!list->map) |
1237 | return -ENOMEM; | |
1238 | ||
1239 | map = list->map; | |
1240 | map->type = _DRM_GEM; | |
1241 | map->size = obj->size; | |
1242 | map->handle = obj; | |
1243 | ||
1244 | /* Get a DRM GEM mmap offset allocated... */ | |
1245 | list->file_offset_node = drm_mm_search_free(&mm->offset_manager, | |
1246 | obj->size / PAGE_SIZE, 0, 0); | |
1247 | if (!list->file_offset_node) { | |
1248 | DRM_ERROR("failed to allocate offset for bo %d\n", obj->name); | |
1249 | ret = -ENOMEM; | |
1250 | goto out_free_list; | |
1251 | } | |
1252 | ||
1253 | list->file_offset_node = drm_mm_get_block(list->file_offset_node, | |
1254 | obj->size / PAGE_SIZE, 0); | |
1255 | if (!list->file_offset_node) { | |
1256 | ret = -ENOMEM; | |
1257 | goto out_free_list; | |
1258 | } | |
1259 | ||
1260 | list->hash.key = list->file_offset_node->start; | |
1261 | if (drm_ht_insert_item(&mm->offset_hash, &list->hash)) { | |
1262 | DRM_ERROR("failed to add to map hash\n"); | |
5618ca6a | 1263 | ret = -ENOMEM; |
de151cf6 JB |
1264 | goto out_free_mm; |
1265 | } | |
1266 | ||
1267 | /* By now we should be all set, any drm_mmap request on the offset | |
1268 | * below will get to our mmap & fault handler */ | |
1269 | obj_priv->mmap_offset = ((uint64_t) list->hash.key) << PAGE_SHIFT; | |
1270 | ||
1271 | return 0; | |
1272 | ||
1273 | out_free_mm: | |
1274 | drm_mm_put_block(list->file_offset_node); | |
1275 | out_free_list: | |
9a298b2a | 1276 | kfree(list->map); |
de151cf6 JB |
1277 | |
1278 | return ret; | |
1279 | } | |
1280 | ||
901782b2 CW |
1281 | /** |
1282 | * i915_gem_release_mmap - remove physical page mappings | |
1283 | * @obj: obj in question | |
1284 | * | |
af901ca1 | 1285 | * Preserve the reservation of the mmapping with the DRM core code, but |
901782b2 CW |
1286 | * relinquish ownership of the pages back to the system. |
1287 | * | |
1288 | * It is vital that we remove the page mapping if we have mapped a tiled | |
1289 | * object through the GTT and then lose the fence register due to | |
1290 | * resource pressure. Similarly if the object has been moved out of the | |
1291 | * aperture, than pages mapped into userspace must be revoked. Removing the | |
1292 | * mapping will then trigger a page fault on the next user access, allowing | |
1293 | * fixup by i915_gem_fault(). | |
1294 | */ | |
d05ca301 | 1295 | void |
901782b2 CW |
1296 | i915_gem_release_mmap(struct drm_gem_object *obj) |
1297 | { | |
1298 | struct drm_device *dev = obj->dev; | |
23010e43 | 1299 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
901782b2 CW |
1300 | |
1301 | if (dev->dev_mapping) | |
1302 | unmap_mapping_range(dev->dev_mapping, | |
1303 | obj_priv->mmap_offset, obj->size, 1); | |
1304 | } | |
1305 | ||
ab00b3e5 JB |
1306 | static void |
1307 | i915_gem_free_mmap_offset(struct drm_gem_object *obj) | |
1308 | { | |
1309 | struct drm_device *dev = obj->dev; | |
23010e43 | 1310 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
ab00b3e5 JB |
1311 | struct drm_gem_mm *mm = dev->mm_private; |
1312 | struct drm_map_list *list; | |
1313 | ||
1314 | list = &obj->map_list; | |
1315 | drm_ht_remove_item(&mm->offset_hash, &list->hash); | |
1316 | ||
1317 | if (list->file_offset_node) { | |
1318 | drm_mm_put_block(list->file_offset_node); | |
1319 | list->file_offset_node = NULL; | |
1320 | } | |
1321 | ||
1322 | if (list->map) { | |
9a298b2a | 1323 | kfree(list->map); |
ab00b3e5 JB |
1324 | list->map = NULL; |
1325 | } | |
1326 | ||
1327 | obj_priv->mmap_offset = 0; | |
1328 | } | |
1329 | ||
de151cf6 JB |
1330 | /** |
1331 | * i915_gem_get_gtt_alignment - return required GTT alignment for an object | |
1332 | * @obj: object to check | |
1333 | * | |
1334 | * Return the required GTT alignment for an object, taking into account | |
1335 | * potential fence register mapping if needed. | |
1336 | */ | |
1337 | static uint32_t | |
1338 | i915_gem_get_gtt_alignment(struct drm_gem_object *obj) | |
1339 | { | |
1340 | struct drm_device *dev = obj->dev; | |
23010e43 | 1341 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
1342 | int start, i; |
1343 | ||
1344 | /* | |
1345 | * Minimum alignment is 4k (GTT page size), but might be greater | |
1346 | * if a fence register is needed for the object. | |
1347 | */ | |
1348 | if (IS_I965G(dev) || obj_priv->tiling_mode == I915_TILING_NONE) | |
1349 | return 4096; | |
1350 | ||
1351 | /* | |
1352 | * Previous chips need to be aligned to the size of the smallest | |
1353 | * fence register that can contain the object. | |
1354 | */ | |
1355 | if (IS_I9XX(dev)) | |
1356 | start = 1024*1024; | |
1357 | else | |
1358 | start = 512*1024; | |
1359 | ||
1360 | for (i = start; i < obj->size; i <<= 1) | |
1361 | ; | |
1362 | ||
1363 | return i; | |
1364 | } | |
1365 | ||
1366 | /** | |
1367 | * i915_gem_mmap_gtt_ioctl - prepare an object for GTT mmap'ing | |
1368 | * @dev: DRM device | |
1369 | * @data: GTT mapping ioctl data | |
1370 | * @file_priv: GEM object info | |
1371 | * | |
1372 | * Simply returns the fake offset to userspace so it can mmap it. | |
1373 | * The mmap call will end up in drm_gem_mmap(), which will set things | |
1374 | * up so we can get faults in the handler above. | |
1375 | * | |
1376 | * The fault handler will take care of binding the object into the GTT | |
1377 | * (since it may have been evicted to make room for something), allocating | |
1378 | * a fence register, and mapping the appropriate aperture address into | |
1379 | * userspace. | |
1380 | */ | |
1381 | int | |
1382 | i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data, | |
1383 | struct drm_file *file_priv) | |
1384 | { | |
1385 | struct drm_i915_gem_mmap_gtt *args = data; | |
de151cf6 JB |
1386 | struct drm_gem_object *obj; |
1387 | struct drm_i915_gem_object *obj_priv; | |
1388 | int ret; | |
1389 | ||
1390 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1391 | return -ENODEV; | |
1392 | ||
1393 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
1394 | if (obj == NULL) | |
bf79cb91 | 1395 | return -ENOENT; |
de151cf6 JB |
1396 | |
1397 | mutex_lock(&dev->struct_mutex); | |
1398 | ||
23010e43 | 1399 | obj_priv = to_intel_bo(obj); |
de151cf6 | 1400 | |
ab18282d CW |
1401 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
1402 | DRM_ERROR("Attempting to mmap a purgeable buffer\n"); | |
1403 | drm_gem_object_unreference(obj); | |
1404 | mutex_unlock(&dev->struct_mutex); | |
1405 | return -EINVAL; | |
1406 | } | |
1407 | ||
1408 | ||
de151cf6 JB |
1409 | if (!obj_priv->mmap_offset) { |
1410 | ret = i915_gem_create_mmap_offset(obj); | |
13af1062 CW |
1411 | if (ret) { |
1412 | drm_gem_object_unreference(obj); | |
1413 | mutex_unlock(&dev->struct_mutex); | |
de151cf6 | 1414 | return ret; |
13af1062 | 1415 | } |
de151cf6 JB |
1416 | } |
1417 | ||
1418 | args->offset = obj_priv->mmap_offset; | |
1419 | ||
de151cf6 JB |
1420 | /* |
1421 | * Pull it into the GTT so that we have a page list (makes the | |
1422 | * initial fault faster and any subsequent flushing possible). | |
1423 | */ | |
1424 | if (!obj_priv->agp_mem) { | |
e67b8ce1 | 1425 | ret = i915_gem_object_bind_to_gtt(obj, 0); |
de151cf6 JB |
1426 | if (ret) { |
1427 | drm_gem_object_unreference(obj); | |
1428 | mutex_unlock(&dev->struct_mutex); | |
1429 | return ret; | |
1430 | } | |
de151cf6 JB |
1431 | } |
1432 | ||
1433 | drm_gem_object_unreference(obj); | |
1434 | mutex_unlock(&dev->struct_mutex); | |
1435 | ||
1436 | return 0; | |
1437 | } | |
1438 | ||
6911a9b8 | 1439 | void |
856fa198 | 1440 | i915_gem_object_put_pages(struct drm_gem_object *obj) |
673a394b | 1441 | { |
23010e43 | 1442 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
1443 | int page_count = obj->size / PAGE_SIZE; |
1444 | int i; | |
1445 | ||
856fa198 | 1446 | BUG_ON(obj_priv->pages_refcount == 0); |
bb6baf76 | 1447 | BUG_ON(obj_priv->madv == __I915_MADV_PURGED); |
673a394b | 1448 | |
856fa198 EA |
1449 | if (--obj_priv->pages_refcount != 0) |
1450 | return; | |
673a394b | 1451 | |
280b713b EA |
1452 | if (obj_priv->tiling_mode != I915_TILING_NONE) |
1453 | i915_gem_object_save_bit_17_swizzle(obj); | |
1454 | ||
3ef94daa | 1455 | if (obj_priv->madv == I915_MADV_DONTNEED) |
13a05fd9 | 1456 | obj_priv->dirty = 0; |
3ef94daa CW |
1457 | |
1458 | for (i = 0; i < page_count; i++) { | |
3ef94daa CW |
1459 | if (obj_priv->dirty) |
1460 | set_page_dirty(obj_priv->pages[i]); | |
1461 | ||
1462 | if (obj_priv->madv == I915_MADV_WILLNEED) | |
856fa198 | 1463 | mark_page_accessed(obj_priv->pages[i]); |
3ef94daa CW |
1464 | |
1465 | page_cache_release(obj_priv->pages[i]); | |
1466 | } | |
673a394b EA |
1467 | obj_priv->dirty = 0; |
1468 | ||
8e7d2b2c | 1469 | drm_free_large(obj_priv->pages); |
856fa198 | 1470 | obj_priv->pages = NULL; |
673a394b EA |
1471 | } |
1472 | ||
1473 | static void | |
852835f3 ZN |
1474 | i915_gem_object_move_to_active(struct drm_gem_object *obj, uint32_t seqno, |
1475 | struct intel_ring_buffer *ring) | |
673a394b EA |
1476 | { |
1477 | struct drm_device *dev = obj->dev; | |
1478 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 1479 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
852835f3 ZN |
1480 | BUG_ON(ring == NULL); |
1481 | obj_priv->ring = ring; | |
673a394b EA |
1482 | |
1483 | /* Add a reference if we're newly entering the active list. */ | |
1484 | if (!obj_priv->active) { | |
1485 | drm_gem_object_reference(obj); | |
1486 | obj_priv->active = 1; | |
1487 | } | |
1488 | /* Move from whatever list we were on to the tail of execution. */ | |
5e118f41 | 1489 | spin_lock(&dev_priv->mm.active_list_lock); |
852835f3 | 1490 | list_move_tail(&obj_priv->list, &ring->active_list); |
5e118f41 | 1491 | spin_unlock(&dev_priv->mm.active_list_lock); |
ce44b0ea | 1492 | obj_priv->last_rendering_seqno = seqno; |
673a394b EA |
1493 | } |
1494 | ||
ce44b0ea EA |
1495 | static void |
1496 | i915_gem_object_move_to_flushing(struct drm_gem_object *obj) | |
1497 | { | |
1498 | struct drm_device *dev = obj->dev; | |
1499 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 1500 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
ce44b0ea EA |
1501 | |
1502 | BUG_ON(!obj_priv->active); | |
1503 | list_move_tail(&obj_priv->list, &dev_priv->mm.flushing_list); | |
1504 | obj_priv->last_rendering_seqno = 0; | |
1505 | } | |
673a394b | 1506 | |
963b4836 CW |
1507 | /* Immediately discard the backing storage */ |
1508 | static void | |
1509 | i915_gem_object_truncate(struct drm_gem_object *obj) | |
1510 | { | |
23010e43 | 1511 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
bb6baf76 | 1512 | struct inode *inode; |
963b4836 | 1513 | |
ae9fed6b CW |
1514 | /* Our goal here is to return as much of the memory as |
1515 | * is possible back to the system as we are called from OOM. | |
1516 | * To do this we must instruct the shmfs to drop all of its | |
1517 | * backing pages, *now*. Here we mirror the actions taken | |
1518 | * when by shmem_delete_inode() to release the backing store. | |
1519 | */ | |
bb6baf76 | 1520 | inode = obj->filp->f_path.dentry->d_inode; |
ae9fed6b CW |
1521 | truncate_inode_pages(inode->i_mapping, 0); |
1522 | if (inode->i_op->truncate_range) | |
1523 | inode->i_op->truncate_range(inode, 0, (loff_t)-1); | |
bb6baf76 CW |
1524 | |
1525 | obj_priv->madv = __I915_MADV_PURGED; | |
963b4836 CW |
1526 | } |
1527 | ||
1528 | static inline int | |
1529 | i915_gem_object_is_purgeable(struct drm_i915_gem_object *obj_priv) | |
1530 | { | |
1531 | return obj_priv->madv == I915_MADV_DONTNEED; | |
1532 | } | |
1533 | ||
673a394b EA |
1534 | static void |
1535 | i915_gem_object_move_to_inactive(struct drm_gem_object *obj) | |
1536 | { | |
1537 | struct drm_device *dev = obj->dev; | |
1538 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 1539 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
1540 | |
1541 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
1542 | if (obj_priv->pin_count != 0) | |
1543 | list_del_init(&obj_priv->list); | |
1544 | else | |
1545 | list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list); | |
1546 | ||
99fcb766 DV |
1547 | BUG_ON(!list_empty(&obj_priv->gpu_write_list)); |
1548 | ||
ce44b0ea | 1549 | obj_priv->last_rendering_seqno = 0; |
852835f3 | 1550 | obj_priv->ring = NULL; |
673a394b EA |
1551 | if (obj_priv->active) { |
1552 | obj_priv->active = 0; | |
1553 | drm_gem_object_unreference(obj); | |
1554 | } | |
1555 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
1556 | } | |
1557 | ||
63560396 DV |
1558 | static void |
1559 | i915_gem_process_flushing_list(struct drm_device *dev, | |
852835f3 ZN |
1560 | uint32_t flush_domains, uint32_t seqno, |
1561 | struct intel_ring_buffer *ring) | |
63560396 DV |
1562 | { |
1563 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1564 | struct drm_i915_gem_object *obj_priv, *next; | |
1565 | ||
1566 | list_for_each_entry_safe(obj_priv, next, | |
1567 | &dev_priv->mm.gpu_write_list, | |
1568 | gpu_write_list) { | |
a8089e84 | 1569 | struct drm_gem_object *obj = &obj_priv->base; |
63560396 DV |
1570 | |
1571 | if ((obj->write_domain & flush_domains) == | |
852835f3 ZN |
1572 | obj->write_domain && |
1573 | obj_priv->ring->ring_flag == ring->ring_flag) { | |
63560396 DV |
1574 | uint32_t old_write_domain = obj->write_domain; |
1575 | ||
1576 | obj->write_domain = 0; | |
1577 | list_del_init(&obj_priv->gpu_write_list); | |
852835f3 | 1578 | i915_gem_object_move_to_active(obj, seqno, ring); |
63560396 DV |
1579 | |
1580 | /* update the fence lru list */ | |
007cc8ac DV |
1581 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) { |
1582 | struct drm_i915_fence_reg *reg = | |
1583 | &dev_priv->fence_regs[obj_priv->fence_reg]; | |
1584 | list_move_tail(®->lru_list, | |
63560396 | 1585 | &dev_priv->mm.fence_list); |
007cc8ac | 1586 | } |
63560396 DV |
1587 | |
1588 | trace_i915_gem_object_change_domain(obj, | |
1589 | obj->read_domains, | |
1590 | old_write_domain); | |
1591 | } | |
1592 | } | |
1593 | } | |
8187a2b7 | 1594 | |
5a5a0c64 | 1595 | uint32_t |
b962442e | 1596 | i915_add_request(struct drm_device *dev, struct drm_file *file_priv, |
852835f3 | 1597 | uint32_t flush_domains, struct intel_ring_buffer *ring) |
673a394b EA |
1598 | { |
1599 | drm_i915_private_t *dev_priv = dev->dev_private; | |
b962442e | 1600 | struct drm_i915_file_private *i915_file_priv = NULL; |
673a394b EA |
1601 | struct drm_i915_gem_request *request; |
1602 | uint32_t seqno; | |
1603 | int was_empty; | |
673a394b | 1604 | |
b962442e EA |
1605 | if (file_priv != NULL) |
1606 | i915_file_priv = file_priv->driver_priv; | |
1607 | ||
9a298b2a | 1608 | request = kzalloc(sizeof(*request), GFP_KERNEL); |
673a394b EA |
1609 | if (request == NULL) |
1610 | return 0; | |
1611 | ||
852835f3 | 1612 | seqno = ring->add_request(dev, ring, file_priv, flush_domains); |
673a394b EA |
1613 | |
1614 | request->seqno = seqno; | |
852835f3 | 1615 | request->ring = ring; |
673a394b | 1616 | request->emitted_jiffies = jiffies; |
852835f3 ZN |
1617 | was_empty = list_empty(&ring->request_list); |
1618 | list_add_tail(&request->list, &ring->request_list); | |
1619 | ||
b962442e EA |
1620 | if (i915_file_priv) { |
1621 | list_add_tail(&request->client_list, | |
1622 | &i915_file_priv->mm.request_list); | |
1623 | } else { | |
1624 | INIT_LIST_HEAD(&request->client_list); | |
1625 | } | |
673a394b | 1626 | |
ce44b0ea EA |
1627 | /* Associate any objects on the flushing list matching the write |
1628 | * domain we're flushing with our flush. | |
1629 | */ | |
63560396 | 1630 | if (flush_domains != 0) |
852835f3 | 1631 | i915_gem_process_flushing_list(dev, flush_domains, seqno, ring); |
ce44b0ea | 1632 | |
f65d9421 BG |
1633 | if (!dev_priv->mm.suspended) { |
1634 | mod_timer(&dev_priv->hangcheck_timer, jiffies + DRM_I915_HANGCHECK_PERIOD); | |
1635 | if (was_empty) | |
1636 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, HZ); | |
1637 | } | |
673a394b EA |
1638 | return seqno; |
1639 | } | |
1640 | ||
1641 | /** | |
1642 | * Command execution barrier | |
1643 | * | |
1644 | * Ensures that all commands in the ring are finished | |
1645 | * before signalling the CPU | |
1646 | */ | |
3043c60c | 1647 | static uint32_t |
852835f3 | 1648 | i915_retire_commands(struct drm_device *dev, struct intel_ring_buffer *ring) |
673a394b | 1649 | { |
673a394b | 1650 | uint32_t flush_domains = 0; |
673a394b EA |
1651 | |
1652 | /* The sampler always gets flushed on i965 (sigh) */ | |
1653 | if (IS_I965G(dev)) | |
1654 | flush_domains |= I915_GEM_DOMAIN_SAMPLER; | |
852835f3 ZN |
1655 | |
1656 | ring->flush(dev, ring, | |
1657 | I915_GEM_DOMAIN_COMMAND, flush_domains); | |
673a394b EA |
1658 | return flush_domains; |
1659 | } | |
1660 | ||
1661 | /** | |
1662 | * Moves buffers associated only with the given active seqno from the active | |
1663 | * to inactive list, potentially freeing them. | |
1664 | */ | |
1665 | static void | |
1666 | i915_gem_retire_request(struct drm_device *dev, | |
1667 | struct drm_i915_gem_request *request) | |
1668 | { | |
1669 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1670 | ||
1c5d22f7 CW |
1671 | trace_i915_gem_request_retire(dev, request->seqno); |
1672 | ||
673a394b EA |
1673 | /* Move any buffers on the active list that are no longer referenced |
1674 | * by the ringbuffer to the flushing/inactive lists as appropriate. | |
1675 | */ | |
5e118f41 | 1676 | spin_lock(&dev_priv->mm.active_list_lock); |
852835f3 | 1677 | while (!list_empty(&request->ring->active_list)) { |
673a394b EA |
1678 | struct drm_gem_object *obj; |
1679 | struct drm_i915_gem_object *obj_priv; | |
1680 | ||
852835f3 | 1681 | obj_priv = list_first_entry(&request->ring->active_list, |
673a394b EA |
1682 | struct drm_i915_gem_object, |
1683 | list); | |
a8089e84 | 1684 | obj = &obj_priv->base; |
673a394b EA |
1685 | |
1686 | /* If the seqno being retired doesn't match the oldest in the | |
1687 | * list, then the oldest in the list must still be newer than | |
1688 | * this seqno. | |
1689 | */ | |
1690 | if (obj_priv->last_rendering_seqno != request->seqno) | |
5e118f41 | 1691 | goto out; |
de151cf6 | 1692 | |
673a394b EA |
1693 | #if WATCH_LRU |
1694 | DRM_INFO("%s: retire %d moves to inactive list %p\n", | |
1695 | __func__, request->seqno, obj); | |
1696 | #endif | |
1697 | ||
ce44b0ea EA |
1698 | if (obj->write_domain != 0) |
1699 | i915_gem_object_move_to_flushing(obj); | |
68c84342 SL |
1700 | else { |
1701 | /* Take a reference on the object so it won't be | |
1702 | * freed while the spinlock is held. The list | |
1703 | * protection for this spinlock is safe when breaking | |
1704 | * the lock like this since the next thing we do | |
1705 | * is just get the head of the list again. | |
1706 | */ | |
1707 | drm_gem_object_reference(obj); | |
673a394b | 1708 | i915_gem_object_move_to_inactive(obj); |
68c84342 SL |
1709 | spin_unlock(&dev_priv->mm.active_list_lock); |
1710 | drm_gem_object_unreference(obj); | |
1711 | spin_lock(&dev_priv->mm.active_list_lock); | |
1712 | } | |
673a394b | 1713 | } |
5e118f41 CW |
1714 | out: |
1715 | spin_unlock(&dev_priv->mm.active_list_lock); | |
673a394b EA |
1716 | } |
1717 | ||
1718 | /** | |
1719 | * Returns true if seq1 is later than seq2. | |
1720 | */ | |
22be1724 | 1721 | bool |
673a394b EA |
1722 | i915_seqno_passed(uint32_t seq1, uint32_t seq2) |
1723 | { | |
1724 | return (int32_t)(seq1 - seq2) >= 0; | |
1725 | } | |
1726 | ||
1727 | uint32_t | |
852835f3 | 1728 | i915_get_gem_seqno(struct drm_device *dev, |
d1b851fc | 1729 | struct intel_ring_buffer *ring) |
673a394b | 1730 | { |
852835f3 | 1731 | return ring->get_gem_seqno(dev, ring); |
673a394b EA |
1732 | } |
1733 | ||
1734 | /** | |
1735 | * This function clears the request list as sequence numbers are passed. | |
1736 | */ | |
b09a1fec CW |
1737 | static void |
1738 | i915_gem_retire_requests_ring(struct drm_device *dev, | |
1739 | struct intel_ring_buffer *ring) | |
673a394b EA |
1740 | { |
1741 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1742 | uint32_t seqno; | |
1743 | ||
8187a2b7 | 1744 | if (!ring->status_page.page_addr |
852835f3 | 1745 | || list_empty(&ring->request_list)) |
6c0594a3 KW |
1746 | return; |
1747 | ||
852835f3 | 1748 | seqno = i915_get_gem_seqno(dev, ring); |
673a394b | 1749 | |
852835f3 | 1750 | while (!list_empty(&ring->request_list)) { |
673a394b EA |
1751 | struct drm_i915_gem_request *request; |
1752 | uint32_t retiring_seqno; | |
1753 | ||
852835f3 | 1754 | request = list_first_entry(&ring->request_list, |
673a394b EA |
1755 | struct drm_i915_gem_request, |
1756 | list); | |
1757 | retiring_seqno = request->seqno; | |
1758 | ||
1759 | if (i915_seqno_passed(seqno, retiring_seqno) || | |
ba1234d1 | 1760 | atomic_read(&dev_priv->mm.wedged)) { |
673a394b EA |
1761 | i915_gem_retire_request(dev, request); |
1762 | ||
1763 | list_del(&request->list); | |
b962442e | 1764 | list_del(&request->client_list); |
9a298b2a | 1765 | kfree(request); |
673a394b EA |
1766 | } else |
1767 | break; | |
1768 | } | |
9d34e5db CW |
1769 | |
1770 | if (unlikely (dev_priv->trace_irq_seqno && | |
1771 | i915_seqno_passed(dev_priv->trace_irq_seqno, seqno))) { | |
8187a2b7 ZN |
1772 | |
1773 | ring->user_irq_put(dev, ring); | |
9d34e5db CW |
1774 | dev_priv->trace_irq_seqno = 0; |
1775 | } | |
673a394b EA |
1776 | } |
1777 | ||
b09a1fec CW |
1778 | void |
1779 | i915_gem_retire_requests(struct drm_device *dev) | |
1780 | { | |
1781 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1782 | ||
be72615b CW |
1783 | if (!list_empty(&dev_priv->mm.deferred_free_list)) { |
1784 | struct drm_i915_gem_object *obj_priv, *tmp; | |
1785 | ||
1786 | /* We must be careful that during unbind() we do not | |
1787 | * accidentally infinitely recurse into retire requests. | |
1788 | * Currently: | |
1789 | * retire -> free -> unbind -> wait -> retire_ring | |
1790 | */ | |
1791 | list_for_each_entry_safe(obj_priv, tmp, | |
1792 | &dev_priv->mm.deferred_free_list, | |
1793 | list) | |
1794 | i915_gem_free_object_tail(&obj_priv->base); | |
1795 | } | |
1796 | ||
b09a1fec CW |
1797 | i915_gem_retire_requests_ring(dev, &dev_priv->render_ring); |
1798 | if (HAS_BSD(dev)) | |
1799 | i915_gem_retire_requests_ring(dev, &dev_priv->bsd_ring); | |
1800 | } | |
1801 | ||
673a394b EA |
1802 | void |
1803 | i915_gem_retire_work_handler(struct work_struct *work) | |
1804 | { | |
1805 | drm_i915_private_t *dev_priv; | |
1806 | struct drm_device *dev; | |
1807 | ||
1808 | dev_priv = container_of(work, drm_i915_private_t, | |
1809 | mm.retire_work.work); | |
1810 | dev = dev_priv->dev; | |
1811 | ||
1812 | mutex_lock(&dev->struct_mutex); | |
b09a1fec | 1813 | i915_gem_retire_requests(dev); |
d1b851fc | 1814 | |
6dbe2772 | 1815 | if (!dev_priv->mm.suspended && |
d1b851fc ZN |
1816 | (!list_empty(&dev_priv->render_ring.request_list) || |
1817 | (HAS_BSD(dev) && | |
1818 | !list_empty(&dev_priv->bsd_ring.request_list)))) | |
9c9fe1f8 | 1819 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, HZ); |
673a394b EA |
1820 | mutex_unlock(&dev->struct_mutex); |
1821 | } | |
1822 | ||
5a5a0c64 | 1823 | int |
852835f3 ZN |
1824 | i915_do_wait_request(struct drm_device *dev, uint32_t seqno, |
1825 | int interruptible, struct intel_ring_buffer *ring) | |
673a394b EA |
1826 | { |
1827 | drm_i915_private_t *dev_priv = dev->dev_private; | |
802c7eb6 | 1828 | u32 ier; |
673a394b EA |
1829 | int ret = 0; |
1830 | ||
1831 | BUG_ON(seqno == 0); | |
1832 | ||
ba1234d1 | 1833 | if (atomic_read(&dev_priv->mm.wedged)) |
ffed1d09 BG |
1834 | return -EIO; |
1835 | ||
852835f3 | 1836 | if (!i915_seqno_passed(ring->get_gem_seqno(dev, ring), seqno)) { |
bad720ff | 1837 | if (HAS_PCH_SPLIT(dev)) |
036a4a7d ZW |
1838 | ier = I915_READ(DEIER) | I915_READ(GTIER); |
1839 | else | |
1840 | ier = I915_READ(IER); | |
802c7eb6 JB |
1841 | if (!ier) { |
1842 | DRM_ERROR("something (likely vbetool) disabled " | |
1843 | "interrupts, re-enabling\n"); | |
1844 | i915_driver_irq_preinstall(dev); | |
1845 | i915_driver_irq_postinstall(dev); | |
1846 | } | |
1847 | ||
1c5d22f7 CW |
1848 | trace_i915_gem_request_wait_begin(dev, seqno); |
1849 | ||
852835f3 | 1850 | ring->waiting_gem_seqno = seqno; |
8187a2b7 | 1851 | ring->user_irq_get(dev, ring); |
48764bf4 | 1852 | if (interruptible) |
852835f3 ZN |
1853 | ret = wait_event_interruptible(ring->irq_queue, |
1854 | i915_seqno_passed( | |
1855 | ring->get_gem_seqno(dev, ring), seqno) | |
1856 | || atomic_read(&dev_priv->mm.wedged)); | |
48764bf4 | 1857 | else |
852835f3 ZN |
1858 | wait_event(ring->irq_queue, |
1859 | i915_seqno_passed( | |
1860 | ring->get_gem_seqno(dev, ring), seqno) | |
1861 | || atomic_read(&dev_priv->mm.wedged)); | |
48764bf4 | 1862 | |
8187a2b7 | 1863 | ring->user_irq_put(dev, ring); |
852835f3 | 1864 | ring->waiting_gem_seqno = 0; |
1c5d22f7 CW |
1865 | |
1866 | trace_i915_gem_request_wait_end(dev, seqno); | |
673a394b | 1867 | } |
ba1234d1 | 1868 | if (atomic_read(&dev_priv->mm.wedged)) |
673a394b EA |
1869 | ret = -EIO; |
1870 | ||
1871 | if (ret && ret != -ERESTARTSYS) | |
1872 | DRM_ERROR("%s returns %d (awaiting %d at %d)\n", | |
852835f3 | 1873 | __func__, ret, seqno, ring->get_gem_seqno(dev, ring)); |
673a394b EA |
1874 | |
1875 | /* Directly dispatch request retiring. While we have the work queue | |
1876 | * to handle this, the waiter on a request often wants an associated | |
1877 | * buffer to have made it to the inactive list, and we would need | |
1878 | * a separate wait queue to handle that. | |
1879 | */ | |
1880 | if (ret == 0) | |
b09a1fec | 1881 | i915_gem_retire_requests_ring(dev, ring); |
673a394b EA |
1882 | |
1883 | return ret; | |
1884 | } | |
1885 | ||
48764bf4 DV |
1886 | /** |
1887 | * Waits for a sequence number to be signaled, and cleans up the | |
1888 | * request and object lists appropriately for that event. | |
1889 | */ | |
1890 | static int | |
852835f3 ZN |
1891 | i915_wait_request(struct drm_device *dev, uint32_t seqno, |
1892 | struct intel_ring_buffer *ring) | |
48764bf4 | 1893 | { |
852835f3 | 1894 | return i915_do_wait_request(dev, seqno, 1, ring); |
48764bf4 DV |
1895 | } |
1896 | ||
8187a2b7 ZN |
1897 | static void |
1898 | i915_gem_flush(struct drm_device *dev, | |
1899 | uint32_t invalidate_domains, | |
1900 | uint32_t flush_domains) | |
1901 | { | |
1902 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1903 | if (flush_domains & I915_GEM_DOMAIN_CPU) | |
1904 | drm_agp_chipset_flush(dev); | |
1905 | dev_priv->render_ring.flush(dev, &dev_priv->render_ring, | |
1906 | invalidate_domains, | |
1907 | flush_domains); | |
d1b851fc ZN |
1908 | |
1909 | if (HAS_BSD(dev)) | |
1910 | dev_priv->bsd_ring.flush(dev, &dev_priv->bsd_ring, | |
1911 | invalidate_domains, | |
1912 | flush_domains); | |
8187a2b7 ZN |
1913 | } |
1914 | ||
673a394b EA |
1915 | /** |
1916 | * Ensures that all rendering to the object has completed and the object is | |
1917 | * safe to unbind from the GTT or access from the CPU. | |
1918 | */ | |
1919 | static int | |
1920 | i915_gem_object_wait_rendering(struct drm_gem_object *obj) | |
1921 | { | |
1922 | struct drm_device *dev = obj->dev; | |
23010e43 | 1923 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
1924 | int ret; |
1925 | ||
e47c68e9 EA |
1926 | /* This function only exists to support waiting for existing rendering, |
1927 | * not for emitting required flushes. | |
673a394b | 1928 | */ |
e47c68e9 | 1929 | BUG_ON((obj->write_domain & I915_GEM_GPU_DOMAINS) != 0); |
673a394b EA |
1930 | |
1931 | /* If there is rendering queued on the buffer being evicted, wait for | |
1932 | * it. | |
1933 | */ | |
1934 | if (obj_priv->active) { | |
1935 | #if WATCH_BUF | |
1936 | DRM_INFO("%s: object %p wait for seqno %08x\n", | |
1937 | __func__, obj, obj_priv->last_rendering_seqno); | |
1938 | #endif | |
852835f3 ZN |
1939 | ret = i915_wait_request(dev, |
1940 | obj_priv->last_rendering_seqno, obj_priv->ring); | |
673a394b EA |
1941 | if (ret != 0) |
1942 | return ret; | |
1943 | } | |
1944 | ||
1945 | return 0; | |
1946 | } | |
1947 | ||
1948 | /** | |
1949 | * Unbinds an object from the GTT aperture. | |
1950 | */ | |
0f973f27 | 1951 | int |
673a394b EA |
1952 | i915_gem_object_unbind(struct drm_gem_object *obj) |
1953 | { | |
1954 | struct drm_device *dev = obj->dev; | |
4a87b8ca | 1955 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 1956 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
1957 | int ret = 0; |
1958 | ||
1959 | #if WATCH_BUF | |
1960 | DRM_INFO("%s:%d %p\n", __func__, __LINE__, obj); | |
1961 | DRM_INFO("gtt_space %p\n", obj_priv->gtt_space); | |
1962 | #endif | |
1963 | if (obj_priv->gtt_space == NULL) | |
1964 | return 0; | |
1965 | ||
1966 | if (obj_priv->pin_count != 0) { | |
1967 | DRM_ERROR("Attempting to unbind pinned buffer\n"); | |
1968 | return -EINVAL; | |
1969 | } | |
1970 | ||
5323fd04 EA |
1971 | /* blow away mappings if mapped through GTT */ |
1972 | i915_gem_release_mmap(obj); | |
1973 | ||
673a394b EA |
1974 | /* Move the object to the CPU domain to ensure that |
1975 | * any possible CPU writes while it's not in the GTT | |
1976 | * are flushed when we go to remap it. This will | |
1977 | * also ensure that all pending GPU writes are finished | |
1978 | * before we unbind. | |
1979 | */ | |
e47c68e9 | 1980 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
8dc1775d | 1981 | if (ret == -ERESTARTSYS) |
673a394b | 1982 | return ret; |
8dc1775d CW |
1983 | /* Continue on if we fail due to EIO, the GPU is hung so we |
1984 | * should be safe and we need to cleanup or else we might | |
1985 | * cause memory corruption through use-after-free. | |
1986 | */ | |
673a394b | 1987 | |
96b47b65 DV |
1988 | /* release the fence reg _after_ flushing */ |
1989 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) | |
1990 | i915_gem_clear_fence_reg(obj); | |
1991 | ||
673a394b EA |
1992 | if (obj_priv->agp_mem != NULL) { |
1993 | drm_unbind_agp(obj_priv->agp_mem); | |
1994 | drm_free_agp(obj_priv->agp_mem, obj->size / PAGE_SIZE); | |
1995 | obj_priv->agp_mem = NULL; | |
1996 | } | |
1997 | ||
856fa198 | 1998 | i915_gem_object_put_pages(obj); |
a32808c0 | 1999 | BUG_ON(obj_priv->pages_refcount); |
673a394b EA |
2000 | |
2001 | if (obj_priv->gtt_space) { | |
2002 | atomic_dec(&dev->gtt_count); | |
2003 | atomic_sub(obj->size, &dev->gtt_memory); | |
2004 | ||
2005 | drm_mm_put_block(obj_priv->gtt_space); | |
2006 | obj_priv->gtt_space = NULL; | |
2007 | } | |
2008 | ||
2009 | /* Remove ourselves from the LRU list if present. */ | |
4a87b8ca | 2010 | spin_lock(&dev_priv->mm.active_list_lock); |
673a394b EA |
2011 | if (!list_empty(&obj_priv->list)) |
2012 | list_del_init(&obj_priv->list); | |
4a87b8ca | 2013 | spin_unlock(&dev_priv->mm.active_list_lock); |
673a394b | 2014 | |
963b4836 CW |
2015 | if (i915_gem_object_is_purgeable(obj_priv)) |
2016 | i915_gem_object_truncate(obj); | |
2017 | ||
1c5d22f7 CW |
2018 | trace_i915_gem_object_unbind(obj); |
2019 | ||
8dc1775d | 2020 | return ret; |
673a394b EA |
2021 | } |
2022 | ||
b47eb4a2 | 2023 | int |
4df2faf4 DV |
2024 | i915_gpu_idle(struct drm_device *dev) |
2025 | { | |
2026 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2027 | bool lists_empty; | |
d1b851fc | 2028 | uint32_t seqno1, seqno2; |
852835f3 | 2029 | int ret; |
4df2faf4 DV |
2030 | |
2031 | spin_lock(&dev_priv->mm.active_list_lock); | |
d1b851fc ZN |
2032 | lists_empty = (list_empty(&dev_priv->mm.flushing_list) && |
2033 | list_empty(&dev_priv->render_ring.active_list) && | |
2034 | (!HAS_BSD(dev) || | |
2035 | list_empty(&dev_priv->bsd_ring.active_list))); | |
4df2faf4 DV |
2036 | spin_unlock(&dev_priv->mm.active_list_lock); |
2037 | ||
2038 | if (lists_empty) | |
2039 | return 0; | |
2040 | ||
2041 | /* Flush everything onto the inactive list. */ | |
2042 | i915_gem_flush(dev, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); | |
d1b851fc | 2043 | seqno1 = i915_add_request(dev, NULL, I915_GEM_GPU_DOMAINS, |
852835f3 | 2044 | &dev_priv->render_ring); |
d1b851fc | 2045 | if (seqno1 == 0) |
4df2faf4 | 2046 | return -ENOMEM; |
d1b851fc ZN |
2047 | ret = i915_wait_request(dev, seqno1, &dev_priv->render_ring); |
2048 | ||
2049 | if (HAS_BSD(dev)) { | |
2050 | seqno2 = i915_add_request(dev, NULL, I915_GEM_GPU_DOMAINS, | |
2051 | &dev_priv->bsd_ring); | |
2052 | if (seqno2 == 0) | |
2053 | return -ENOMEM; | |
2054 | ||
2055 | ret = i915_wait_request(dev, seqno2, &dev_priv->bsd_ring); | |
2056 | if (ret) | |
2057 | return ret; | |
2058 | } | |
2059 | ||
4df2faf4 | 2060 | |
852835f3 | 2061 | return ret; |
4df2faf4 DV |
2062 | } |
2063 | ||
6911a9b8 | 2064 | int |
4bdadb97 CW |
2065 | i915_gem_object_get_pages(struct drm_gem_object *obj, |
2066 | gfp_t gfpmask) | |
673a394b | 2067 | { |
23010e43 | 2068 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
2069 | int page_count, i; |
2070 | struct address_space *mapping; | |
2071 | struct inode *inode; | |
2072 | struct page *page; | |
673a394b | 2073 | |
778c3544 DV |
2074 | BUG_ON(obj_priv->pages_refcount |
2075 | == DRM_I915_GEM_OBJECT_MAX_PAGES_REFCOUNT); | |
2076 | ||
856fa198 | 2077 | if (obj_priv->pages_refcount++ != 0) |
673a394b EA |
2078 | return 0; |
2079 | ||
2080 | /* Get the list of pages out of our struct file. They'll be pinned | |
2081 | * at this point until we release them. | |
2082 | */ | |
2083 | page_count = obj->size / PAGE_SIZE; | |
856fa198 | 2084 | BUG_ON(obj_priv->pages != NULL); |
8e7d2b2c | 2085 | obj_priv->pages = drm_calloc_large(page_count, sizeof(struct page *)); |
856fa198 | 2086 | if (obj_priv->pages == NULL) { |
856fa198 | 2087 | obj_priv->pages_refcount--; |
673a394b EA |
2088 | return -ENOMEM; |
2089 | } | |
2090 | ||
2091 | inode = obj->filp->f_path.dentry->d_inode; | |
2092 | mapping = inode->i_mapping; | |
2093 | for (i = 0; i < page_count; i++) { | |
4bdadb97 | 2094 | page = read_cache_page_gfp(mapping, i, |
985b823b | 2095 | GFP_HIGHUSER | |
4bdadb97 | 2096 | __GFP_COLD | |
cd9f040d | 2097 | __GFP_RECLAIMABLE | |
4bdadb97 | 2098 | gfpmask); |
1f2b1013 CW |
2099 | if (IS_ERR(page)) |
2100 | goto err_pages; | |
2101 | ||
856fa198 | 2102 | obj_priv->pages[i] = page; |
673a394b | 2103 | } |
280b713b EA |
2104 | |
2105 | if (obj_priv->tiling_mode != I915_TILING_NONE) | |
2106 | i915_gem_object_do_bit_17_swizzle(obj); | |
2107 | ||
673a394b | 2108 | return 0; |
1f2b1013 CW |
2109 | |
2110 | err_pages: | |
2111 | while (i--) | |
2112 | page_cache_release(obj_priv->pages[i]); | |
2113 | ||
2114 | drm_free_large(obj_priv->pages); | |
2115 | obj_priv->pages = NULL; | |
2116 | obj_priv->pages_refcount--; | |
2117 | return PTR_ERR(page); | |
673a394b EA |
2118 | } |
2119 | ||
4e901fdc EA |
2120 | static void sandybridge_write_fence_reg(struct drm_i915_fence_reg *reg) |
2121 | { | |
2122 | struct drm_gem_object *obj = reg->obj; | |
2123 | struct drm_device *dev = obj->dev; | |
2124 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2125 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
4e901fdc EA |
2126 | int regnum = obj_priv->fence_reg; |
2127 | uint64_t val; | |
2128 | ||
2129 | val = (uint64_t)((obj_priv->gtt_offset + obj->size - 4096) & | |
2130 | 0xfffff000) << 32; | |
2131 | val |= obj_priv->gtt_offset & 0xfffff000; | |
2132 | val |= (uint64_t)((obj_priv->stride / 128) - 1) << | |
2133 | SANDYBRIDGE_FENCE_PITCH_SHIFT; | |
2134 | ||
2135 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2136 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; | |
2137 | val |= I965_FENCE_REG_VALID; | |
2138 | ||
2139 | I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + (regnum * 8), val); | |
2140 | } | |
2141 | ||
de151cf6 JB |
2142 | static void i965_write_fence_reg(struct drm_i915_fence_reg *reg) |
2143 | { | |
2144 | struct drm_gem_object *obj = reg->obj; | |
2145 | struct drm_device *dev = obj->dev; | |
2146 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2147 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
2148 | int regnum = obj_priv->fence_reg; |
2149 | uint64_t val; | |
2150 | ||
2151 | val = (uint64_t)((obj_priv->gtt_offset + obj->size - 4096) & | |
2152 | 0xfffff000) << 32; | |
2153 | val |= obj_priv->gtt_offset & 0xfffff000; | |
2154 | val |= ((obj_priv->stride / 128) - 1) << I965_FENCE_PITCH_SHIFT; | |
2155 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2156 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; | |
2157 | val |= I965_FENCE_REG_VALID; | |
2158 | ||
2159 | I915_WRITE64(FENCE_REG_965_0 + (regnum * 8), val); | |
2160 | } | |
2161 | ||
2162 | static void i915_write_fence_reg(struct drm_i915_fence_reg *reg) | |
2163 | { | |
2164 | struct drm_gem_object *obj = reg->obj; | |
2165 | struct drm_device *dev = obj->dev; | |
2166 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2167 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 | 2168 | int regnum = obj_priv->fence_reg; |
0f973f27 | 2169 | int tile_width; |
dc529a4f | 2170 | uint32_t fence_reg, val; |
de151cf6 JB |
2171 | uint32_t pitch_val; |
2172 | ||
2173 | if ((obj_priv->gtt_offset & ~I915_FENCE_START_MASK) || | |
2174 | (obj_priv->gtt_offset & (obj->size - 1))) { | |
f06da264 | 2175 | WARN(1, "%s: object 0x%08x not 1M or size (0x%zx) aligned\n", |
0f973f27 | 2176 | __func__, obj_priv->gtt_offset, obj->size); |
de151cf6 JB |
2177 | return; |
2178 | } | |
2179 | ||
0f973f27 JB |
2180 | if (obj_priv->tiling_mode == I915_TILING_Y && |
2181 | HAS_128_BYTE_Y_TILING(dev)) | |
2182 | tile_width = 128; | |
de151cf6 | 2183 | else |
0f973f27 JB |
2184 | tile_width = 512; |
2185 | ||
2186 | /* Note: pitch better be a power of two tile widths */ | |
2187 | pitch_val = obj_priv->stride / tile_width; | |
2188 | pitch_val = ffs(pitch_val) - 1; | |
de151cf6 | 2189 | |
c36a2a6d DV |
2190 | if (obj_priv->tiling_mode == I915_TILING_Y && |
2191 | HAS_128_BYTE_Y_TILING(dev)) | |
2192 | WARN_ON(pitch_val > I830_FENCE_MAX_PITCH_VAL); | |
2193 | else | |
2194 | WARN_ON(pitch_val > I915_FENCE_MAX_PITCH_VAL); | |
2195 | ||
de151cf6 JB |
2196 | val = obj_priv->gtt_offset; |
2197 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2198 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; | |
2199 | val |= I915_FENCE_SIZE_BITS(obj->size); | |
2200 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; | |
2201 | val |= I830_FENCE_REG_VALID; | |
2202 | ||
dc529a4f EA |
2203 | if (regnum < 8) |
2204 | fence_reg = FENCE_REG_830_0 + (regnum * 4); | |
2205 | else | |
2206 | fence_reg = FENCE_REG_945_8 + ((regnum - 8) * 4); | |
2207 | I915_WRITE(fence_reg, val); | |
de151cf6 JB |
2208 | } |
2209 | ||
2210 | static void i830_write_fence_reg(struct drm_i915_fence_reg *reg) | |
2211 | { | |
2212 | struct drm_gem_object *obj = reg->obj; | |
2213 | struct drm_device *dev = obj->dev; | |
2214 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2215 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
2216 | int regnum = obj_priv->fence_reg; |
2217 | uint32_t val; | |
2218 | uint32_t pitch_val; | |
8d7773a3 | 2219 | uint32_t fence_size_bits; |
de151cf6 | 2220 | |
8d7773a3 | 2221 | if ((obj_priv->gtt_offset & ~I830_FENCE_START_MASK) || |
de151cf6 | 2222 | (obj_priv->gtt_offset & (obj->size - 1))) { |
8d7773a3 | 2223 | WARN(1, "%s: object 0x%08x not 512K or size aligned\n", |
0f973f27 | 2224 | __func__, obj_priv->gtt_offset); |
de151cf6 JB |
2225 | return; |
2226 | } | |
2227 | ||
e76a16de EA |
2228 | pitch_val = obj_priv->stride / 128; |
2229 | pitch_val = ffs(pitch_val) - 1; | |
2230 | WARN_ON(pitch_val > I830_FENCE_MAX_PITCH_VAL); | |
2231 | ||
de151cf6 JB |
2232 | val = obj_priv->gtt_offset; |
2233 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2234 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; | |
8d7773a3 DV |
2235 | fence_size_bits = I830_FENCE_SIZE_BITS(obj->size); |
2236 | WARN_ON(fence_size_bits & ~0x00000f00); | |
2237 | val |= fence_size_bits; | |
de151cf6 JB |
2238 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; |
2239 | val |= I830_FENCE_REG_VALID; | |
2240 | ||
2241 | I915_WRITE(FENCE_REG_830_0 + (regnum * 4), val); | |
de151cf6 JB |
2242 | } |
2243 | ||
ae3db24a DV |
2244 | static int i915_find_fence_reg(struct drm_device *dev) |
2245 | { | |
2246 | struct drm_i915_fence_reg *reg = NULL; | |
2247 | struct drm_i915_gem_object *obj_priv = NULL; | |
2248 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2249 | struct drm_gem_object *obj = NULL; | |
2250 | int i, avail, ret; | |
2251 | ||
2252 | /* First try to find a free reg */ | |
2253 | avail = 0; | |
2254 | for (i = dev_priv->fence_reg_start; i < dev_priv->num_fence_regs; i++) { | |
2255 | reg = &dev_priv->fence_regs[i]; | |
2256 | if (!reg->obj) | |
2257 | return i; | |
2258 | ||
23010e43 | 2259 | obj_priv = to_intel_bo(reg->obj); |
ae3db24a DV |
2260 | if (!obj_priv->pin_count) |
2261 | avail++; | |
2262 | } | |
2263 | ||
2264 | if (avail == 0) | |
2265 | return -ENOSPC; | |
2266 | ||
2267 | /* None available, try to steal one or wait for a user to finish */ | |
2268 | i = I915_FENCE_REG_NONE; | |
007cc8ac DV |
2269 | list_for_each_entry(reg, &dev_priv->mm.fence_list, |
2270 | lru_list) { | |
2271 | obj = reg->obj; | |
2272 | obj_priv = to_intel_bo(obj); | |
ae3db24a DV |
2273 | |
2274 | if (obj_priv->pin_count) | |
2275 | continue; | |
2276 | ||
2277 | /* found one! */ | |
2278 | i = obj_priv->fence_reg; | |
2279 | break; | |
2280 | } | |
2281 | ||
2282 | BUG_ON(i == I915_FENCE_REG_NONE); | |
2283 | ||
2284 | /* We only have a reference on obj from the active list. put_fence_reg | |
2285 | * might drop that one, causing a use-after-free in it. So hold a | |
2286 | * private reference to obj like the other callers of put_fence_reg | |
2287 | * (set_tiling ioctl) do. */ | |
2288 | drm_gem_object_reference(obj); | |
2289 | ret = i915_gem_object_put_fence_reg(obj); | |
2290 | drm_gem_object_unreference(obj); | |
2291 | if (ret != 0) | |
2292 | return ret; | |
2293 | ||
2294 | return i; | |
2295 | } | |
2296 | ||
de151cf6 JB |
2297 | /** |
2298 | * i915_gem_object_get_fence_reg - set up a fence reg for an object | |
2299 | * @obj: object to map through a fence reg | |
2300 | * | |
2301 | * When mapping objects through the GTT, userspace wants to be able to write | |
2302 | * to them without having to worry about swizzling if the object is tiled. | |
2303 | * | |
2304 | * This function walks the fence regs looking for a free one for @obj, | |
2305 | * stealing one if it can't find any. | |
2306 | * | |
2307 | * It then sets up the reg based on the object's properties: address, pitch | |
2308 | * and tiling format. | |
2309 | */ | |
8c4b8c3f CW |
2310 | int |
2311 | i915_gem_object_get_fence_reg(struct drm_gem_object *obj) | |
de151cf6 JB |
2312 | { |
2313 | struct drm_device *dev = obj->dev; | |
79e53945 | 2314 | struct drm_i915_private *dev_priv = dev->dev_private; |
23010e43 | 2315 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 | 2316 | struct drm_i915_fence_reg *reg = NULL; |
ae3db24a | 2317 | int ret; |
de151cf6 | 2318 | |
a09ba7fa EA |
2319 | /* Just update our place in the LRU if our fence is getting used. */ |
2320 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) { | |
007cc8ac DV |
2321 | reg = &dev_priv->fence_regs[obj_priv->fence_reg]; |
2322 | list_move_tail(®->lru_list, &dev_priv->mm.fence_list); | |
a09ba7fa EA |
2323 | return 0; |
2324 | } | |
2325 | ||
de151cf6 JB |
2326 | switch (obj_priv->tiling_mode) { |
2327 | case I915_TILING_NONE: | |
2328 | WARN(1, "allocating a fence for non-tiled object?\n"); | |
2329 | break; | |
2330 | case I915_TILING_X: | |
0f973f27 JB |
2331 | if (!obj_priv->stride) |
2332 | return -EINVAL; | |
2333 | WARN((obj_priv->stride & (512 - 1)), | |
2334 | "object 0x%08x is X tiled but has non-512B pitch\n", | |
2335 | obj_priv->gtt_offset); | |
de151cf6 JB |
2336 | break; |
2337 | case I915_TILING_Y: | |
0f973f27 JB |
2338 | if (!obj_priv->stride) |
2339 | return -EINVAL; | |
2340 | WARN((obj_priv->stride & (128 - 1)), | |
2341 | "object 0x%08x is Y tiled but has non-128B pitch\n", | |
2342 | obj_priv->gtt_offset); | |
de151cf6 JB |
2343 | break; |
2344 | } | |
2345 | ||
ae3db24a DV |
2346 | ret = i915_find_fence_reg(dev); |
2347 | if (ret < 0) | |
2348 | return ret; | |
de151cf6 | 2349 | |
ae3db24a DV |
2350 | obj_priv->fence_reg = ret; |
2351 | reg = &dev_priv->fence_regs[obj_priv->fence_reg]; | |
007cc8ac | 2352 | list_add_tail(®->lru_list, &dev_priv->mm.fence_list); |
a09ba7fa | 2353 | |
de151cf6 JB |
2354 | reg->obj = obj; |
2355 | ||
e259befd CW |
2356 | switch (INTEL_INFO(dev)->gen) { |
2357 | case 6: | |
4e901fdc | 2358 | sandybridge_write_fence_reg(reg); |
e259befd CW |
2359 | break; |
2360 | case 5: | |
2361 | case 4: | |
de151cf6 | 2362 | i965_write_fence_reg(reg); |
e259befd CW |
2363 | break; |
2364 | case 3: | |
de151cf6 | 2365 | i915_write_fence_reg(reg); |
e259befd CW |
2366 | break; |
2367 | case 2: | |
de151cf6 | 2368 | i830_write_fence_reg(reg); |
e259befd CW |
2369 | break; |
2370 | } | |
d9ddcb96 | 2371 | |
ae3db24a DV |
2372 | trace_i915_gem_object_get_fence(obj, obj_priv->fence_reg, |
2373 | obj_priv->tiling_mode); | |
1c5d22f7 | 2374 | |
d9ddcb96 | 2375 | return 0; |
de151cf6 JB |
2376 | } |
2377 | ||
2378 | /** | |
2379 | * i915_gem_clear_fence_reg - clear out fence register info | |
2380 | * @obj: object to clear | |
2381 | * | |
2382 | * Zeroes out the fence register itself and clears out the associated | |
2383 | * data structures in dev_priv and obj_priv. | |
2384 | */ | |
2385 | static void | |
2386 | i915_gem_clear_fence_reg(struct drm_gem_object *obj) | |
2387 | { | |
2388 | struct drm_device *dev = obj->dev; | |
79e53945 | 2389 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 2390 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
007cc8ac DV |
2391 | struct drm_i915_fence_reg *reg = |
2392 | &dev_priv->fence_regs[obj_priv->fence_reg]; | |
e259befd | 2393 | uint32_t fence_reg; |
de151cf6 | 2394 | |
e259befd CW |
2395 | switch (INTEL_INFO(dev)->gen) { |
2396 | case 6: | |
4e901fdc EA |
2397 | I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + |
2398 | (obj_priv->fence_reg * 8), 0); | |
e259befd CW |
2399 | break; |
2400 | case 5: | |
2401 | case 4: | |
de151cf6 | 2402 | I915_WRITE64(FENCE_REG_965_0 + (obj_priv->fence_reg * 8), 0); |
e259befd CW |
2403 | break; |
2404 | case 3: | |
9b74f734 | 2405 | if (obj_priv->fence_reg >= 8) |
e259befd | 2406 | fence_reg = FENCE_REG_945_8 + (obj_priv->fence_reg - 8) * 4; |
dc529a4f | 2407 | else |
e259befd CW |
2408 | case 2: |
2409 | fence_reg = FENCE_REG_830_0 + obj_priv->fence_reg * 4; | |
dc529a4f EA |
2410 | |
2411 | I915_WRITE(fence_reg, 0); | |
e259befd | 2412 | break; |
dc529a4f | 2413 | } |
de151cf6 | 2414 | |
007cc8ac | 2415 | reg->obj = NULL; |
de151cf6 | 2416 | obj_priv->fence_reg = I915_FENCE_REG_NONE; |
007cc8ac | 2417 | list_del_init(®->lru_list); |
de151cf6 JB |
2418 | } |
2419 | ||
52dc7d32 CW |
2420 | /** |
2421 | * i915_gem_object_put_fence_reg - waits on outstanding fenced access | |
2422 | * to the buffer to finish, and then resets the fence register. | |
2423 | * @obj: tiled object holding a fence register. | |
2424 | * | |
2425 | * Zeroes out the fence register itself and clears out the associated | |
2426 | * data structures in dev_priv and obj_priv. | |
2427 | */ | |
2428 | int | |
2429 | i915_gem_object_put_fence_reg(struct drm_gem_object *obj) | |
2430 | { | |
2431 | struct drm_device *dev = obj->dev; | |
23010e43 | 2432 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
52dc7d32 CW |
2433 | |
2434 | if (obj_priv->fence_reg == I915_FENCE_REG_NONE) | |
2435 | return 0; | |
2436 | ||
10ae9bd2 DV |
2437 | /* If we've changed tiling, GTT-mappings of the object |
2438 | * need to re-fault to ensure that the correct fence register | |
2439 | * setup is in place. | |
2440 | */ | |
2441 | i915_gem_release_mmap(obj); | |
2442 | ||
52dc7d32 CW |
2443 | /* On the i915, GPU access to tiled buffers is via a fence, |
2444 | * therefore we must wait for any outstanding access to complete | |
2445 | * before clearing the fence. | |
2446 | */ | |
2447 | if (!IS_I965G(dev)) { | |
2448 | int ret; | |
2449 | ||
2dafb1e0 CW |
2450 | ret = i915_gem_object_flush_gpu_write_domain(obj); |
2451 | if (ret != 0) | |
2452 | return ret; | |
2453 | ||
52dc7d32 CW |
2454 | ret = i915_gem_object_wait_rendering(obj); |
2455 | if (ret != 0) | |
2456 | return ret; | |
2457 | } | |
2458 | ||
4a726612 | 2459 | i915_gem_object_flush_gtt_write_domain(obj); |
52dc7d32 CW |
2460 | i915_gem_clear_fence_reg (obj); |
2461 | ||
2462 | return 0; | |
2463 | } | |
2464 | ||
673a394b EA |
2465 | /** |
2466 | * Finds free space in the GTT aperture and binds the object there. | |
2467 | */ | |
2468 | static int | |
2469 | i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment) | |
2470 | { | |
2471 | struct drm_device *dev = obj->dev; | |
2472 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2473 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b | 2474 | struct drm_mm_node *free_space; |
4bdadb97 | 2475 | gfp_t gfpmask = __GFP_NORETRY | __GFP_NOWARN; |
07f73f69 | 2476 | int ret; |
673a394b | 2477 | |
bb6baf76 | 2478 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
3ef94daa CW |
2479 | DRM_ERROR("Attempting to bind a purgeable object\n"); |
2480 | return -EINVAL; | |
2481 | } | |
2482 | ||
673a394b | 2483 | if (alignment == 0) |
0f973f27 | 2484 | alignment = i915_gem_get_gtt_alignment(obj); |
8d7773a3 | 2485 | if (alignment & (i915_gem_get_gtt_alignment(obj) - 1)) { |
673a394b EA |
2486 | DRM_ERROR("Invalid object alignment requested %u\n", alignment); |
2487 | return -EINVAL; | |
2488 | } | |
2489 | ||
654fc607 CW |
2490 | /* If the object is bigger than the entire aperture, reject it early |
2491 | * before evicting everything in a vain attempt to find space. | |
2492 | */ | |
2493 | if (obj->size > dev->gtt_total) { | |
2494 | DRM_ERROR("Attempting to bind an object larger than the aperture\n"); | |
2495 | return -E2BIG; | |
2496 | } | |
2497 | ||
673a394b EA |
2498 | search_free: |
2499 | free_space = drm_mm_search_free(&dev_priv->mm.gtt_space, | |
2500 | obj->size, alignment, 0); | |
2501 | if (free_space != NULL) { | |
2502 | obj_priv->gtt_space = drm_mm_get_block(free_space, obj->size, | |
2503 | alignment); | |
db3307a9 | 2504 | if (obj_priv->gtt_space != NULL) |
673a394b | 2505 | obj_priv->gtt_offset = obj_priv->gtt_space->start; |
673a394b EA |
2506 | } |
2507 | if (obj_priv->gtt_space == NULL) { | |
2508 | /* If the gtt is empty and we're still having trouble | |
2509 | * fitting our object in, we're out of memory. | |
2510 | */ | |
2511 | #if WATCH_LRU | |
2512 | DRM_INFO("%s: GTT full, evicting something\n", __func__); | |
2513 | #endif | |
0108a3ed | 2514 | ret = i915_gem_evict_something(dev, obj->size, alignment); |
9731129c | 2515 | if (ret) |
673a394b | 2516 | return ret; |
9731129c | 2517 | |
673a394b EA |
2518 | goto search_free; |
2519 | } | |
2520 | ||
2521 | #if WATCH_BUF | |
cfd43c02 | 2522 | DRM_INFO("Binding object of size %zd at 0x%08x\n", |
673a394b EA |
2523 | obj->size, obj_priv->gtt_offset); |
2524 | #endif | |
4bdadb97 | 2525 | ret = i915_gem_object_get_pages(obj, gfpmask); |
673a394b EA |
2526 | if (ret) { |
2527 | drm_mm_put_block(obj_priv->gtt_space); | |
2528 | obj_priv->gtt_space = NULL; | |
07f73f69 CW |
2529 | |
2530 | if (ret == -ENOMEM) { | |
2531 | /* first try to clear up some space from the GTT */ | |
0108a3ed DV |
2532 | ret = i915_gem_evict_something(dev, obj->size, |
2533 | alignment); | |
07f73f69 | 2534 | if (ret) { |
07f73f69 | 2535 | /* now try to shrink everyone else */ |
4bdadb97 CW |
2536 | if (gfpmask) { |
2537 | gfpmask = 0; | |
2538 | goto search_free; | |
07f73f69 CW |
2539 | } |
2540 | ||
2541 | return ret; | |
2542 | } | |
2543 | ||
2544 | goto search_free; | |
2545 | } | |
2546 | ||
673a394b EA |
2547 | return ret; |
2548 | } | |
2549 | ||
673a394b EA |
2550 | /* Create an AGP memory structure pointing at our pages, and bind it |
2551 | * into the GTT. | |
2552 | */ | |
2553 | obj_priv->agp_mem = drm_agp_bind_pages(dev, | |
856fa198 | 2554 | obj_priv->pages, |
07f73f69 | 2555 | obj->size >> PAGE_SHIFT, |
ba1eb1d8 KP |
2556 | obj_priv->gtt_offset, |
2557 | obj_priv->agp_type); | |
673a394b | 2558 | if (obj_priv->agp_mem == NULL) { |
856fa198 | 2559 | i915_gem_object_put_pages(obj); |
673a394b EA |
2560 | drm_mm_put_block(obj_priv->gtt_space); |
2561 | obj_priv->gtt_space = NULL; | |
07f73f69 | 2562 | |
0108a3ed | 2563 | ret = i915_gem_evict_something(dev, obj->size, alignment); |
9731129c | 2564 | if (ret) |
07f73f69 | 2565 | return ret; |
07f73f69 CW |
2566 | |
2567 | goto search_free; | |
673a394b EA |
2568 | } |
2569 | atomic_inc(&dev->gtt_count); | |
2570 | atomic_add(obj->size, &dev->gtt_memory); | |
2571 | ||
bf1a1092 CW |
2572 | /* keep track of bounds object by adding it to the inactive list */ |
2573 | list_add_tail(&obj_priv->list, &dev_priv->mm.inactive_list); | |
2574 | ||
673a394b EA |
2575 | /* Assert that the object is not currently in any GPU domain. As it |
2576 | * wasn't in the GTT, there shouldn't be any way it could have been in | |
2577 | * a GPU cache | |
2578 | */ | |
21d509e3 CW |
2579 | BUG_ON(obj->read_domains & I915_GEM_GPU_DOMAINS); |
2580 | BUG_ON(obj->write_domain & I915_GEM_GPU_DOMAINS); | |
673a394b | 2581 | |
1c5d22f7 CW |
2582 | trace_i915_gem_object_bind(obj, obj_priv->gtt_offset); |
2583 | ||
673a394b EA |
2584 | return 0; |
2585 | } | |
2586 | ||
2587 | void | |
2588 | i915_gem_clflush_object(struct drm_gem_object *obj) | |
2589 | { | |
23010e43 | 2590 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
2591 | |
2592 | /* If we don't have a page list set up, then we're not pinned | |
2593 | * to GPU, and we can ignore the cache flush because it'll happen | |
2594 | * again at bind time. | |
2595 | */ | |
856fa198 | 2596 | if (obj_priv->pages == NULL) |
673a394b EA |
2597 | return; |
2598 | ||
1c5d22f7 | 2599 | trace_i915_gem_object_clflush(obj); |
cfa16a0d | 2600 | |
856fa198 | 2601 | drm_clflush_pages(obj_priv->pages, obj->size / PAGE_SIZE); |
673a394b EA |
2602 | } |
2603 | ||
e47c68e9 | 2604 | /** Flushes any GPU write domain for the object if it's dirty. */ |
2dafb1e0 | 2605 | static int |
e47c68e9 EA |
2606 | i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj) |
2607 | { | |
2608 | struct drm_device *dev = obj->dev; | |
1c5d22f7 | 2609 | uint32_t old_write_domain; |
852835f3 | 2610 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
e47c68e9 EA |
2611 | |
2612 | if ((obj->write_domain & I915_GEM_GPU_DOMAINS) == 0) | |
2dafb1e0 | 2613 | return 0; |
e47c68e9 EA |
2614 | |
2615 | /* Queue the GPU write cache flushing we need. */ | |
1c5d22f7 | 2616 | old_write_domain = obj->write_domain; |
e47c68e9 | 2617 | i915_gem_flush(dev, 0, obj->write_domain); |
2dafb1e0 CW |
2618 | if (i915_add_request(dev, NULL, obj->write_domain, obj_priv->ring) == 0) |
2619 | return -ENOMEM; | |
1c5d22f7 CW |
2620 | |
2621 | trace_i915_gem_object_change_domain(obj, | |
2622 | obj->read_domains, | |
2623 | old_write_domain); | |
2dafb1e0 | 2624 | return 0; |
e47c68e9 EA |
2625 | } |
2626 | ||
2627 | /** Flushes the GTT write domain for the object if it's dirty. */ | |
2628 | static void | |
2629 | i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj) | |
2630 | { | |
1c5d22f7 CW |
2631 | uint32_t old_write_domain; |
2632 | ||
e47c68e9 EA |
2633 | if (obj->write_domain != I915_GEM_DOMAIN_GTT) |
2634 | return; | |
2635 | ||
2636 | /* No actual flushing is required for the GTT write domain. Writes | |
2637 | * to it immediately go to main memory as far as we know, so there's | |
2638 | * no chipset flush. It also doesn't land in render cache. | |
2639 | */ | |
1c5d22f7 | 2640 | old_write_domain = obj->write_domain; |
e47c68e9 | 2641 | obj->write_domain = 0; |
1c5d22f7 CW |
2642 | |
2643 | trace_i915_gem_object_change_domain(obj, | |
2644 | obj->read_domains, | |
2645 | old_write_domain); | |
e47c68e9 EA |
2646 | } |
2647 | ||
2648 | /** Flushes the CPU write domain for the object if it's dirty. */ | |
2649 | static void | |
2650 | i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj) | |
2651 | { | |
2652 | struct drm_device *dev = obj->dev; | |
1c5d22f7 | 2653 | uint32_t old_write_domain; |
e47c68e9 EA |
2654 | |
2655 | if (obj->write_domain != I915_GEM_DOMAIN_CPU) | |
2656 | return; | |
2657 | ||
2658 | i915_gem_clflush_object(obj); | |
2659 | drm_agp_chipset_flush(dev); | |
1c5d22f7 | 2660 | old_write_domain = obj->write_domain; |
e47c68e9 | 2661 | obj->write_domain = 0; |
1c5d22f7 CW |
2662 | |
2663 | trace_i915_gem_object_change_domain(obj, | |
2664 | obj->read_domains, | |
2665 | old_write_domain); | |
e47c68e9 EA |
2666 | } |
2667 | ||
2dafb1e0 | 2668 | int |
6b95a207 KH |
2669 | i915_gem_object_flush_write_domain(struct drm_gem_object *obj) |
2670 | { | |
2dafb1e0 CW |
2671 | int ret = 0; |
2672 | ||
6b95a207 KH |
2673 | switch (obj->write_domain) { |
2674 | case I915_GEM_DOMAIN_GTT: | |
2675 | i915_gem_object_flush_gtt_write_domain(obj); | |
2676 | break; | |
2677 | case I915_GEM_DOMAIN_CPU: | |
2678 | i915_gem_object_flush_cpu_write_domain(obj); | |
2679 | break; | |
2680 | default: | |
2dafb1e0 | 2681 | ret = i915_gem_object_flush_gpu_write_domain(obj); |
6b95a207 KH |
2682 | break; |
2683 | } | |
2dafb1e0 CW |
2684 | |
2685 | return ret; | |
6b95a207 KH |
2686 | } |
2687 | ||
2ef7eeaa EA |
2688 | /** |
2689 | * Moves a single object to the GTT read, and possibly write domain. | |
2690 | * | |
2691 | * This function returns when the move is complete, including waiting on | |
2692 | * flushes to occur. | |
2693 | */ | |
79e53945 | 2694 | int |
2ef7eeaa EA |
2695 | i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj, int write) |
2696 | { | |
23010e43 | 2697 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
1c5d22f7 | 2698 | uint32_t old_write_domain, old_read_domains; |
e47c68e9 | 2699 | int ret; |
2ef7eeaa | 2700 | |
02354392 EA |
2701 | /* Not valid to be called on unbound objects. */ |
2702 | if (obj_priv->gtt_space == NULL) | |
2703 | return -EINVAL; | |
2704 | ||
2dafb1e0 CW |
2705 | ret = i915_gem_object_flush_gpu_write_domain(obj); |
2706 | if (ret != 0) | |
2707 | return ret; | |
2708 | ||
e47c68e9 EA |
2709 | /* Wait on any GPU rendering and flushing to occur. */ |
2710 | ret = i915_gem_object_wait_rendering(obj); | |
2711 | if (ret != 0) | |
2712 | return ret; | |
2713 | ||
1c5d22f7 CW |
2714 | old_write_domain = obj->write_domain; |
2715 | old_read_domains = obj->read_domains; | |
2716 | ||
e47c68e9 EA |
2717 | /* If we're writing through the GTT domain, then CPU and GPU caches |
2718 | * will need to be invalidated at next use. | |
2ef7eeaa | 2719 | */ |
e47c68e9 EA |
2720 | if (write) |
2721 | obj->read_domains &= I915_GEM_DOMAIN_GTT; | |
2ef7eeaa | 2722 | |
e47c68e9 | 2723 | i915_gem_object_flush_cpu_write_domain(obj); |
2ef7eeaa | 2724 | |
e47c68e9 EA |
2725 | /* It should now be out of any other write domains, and we can update |
2726 | * the domain values for our changes. | |
2727 | */ | |
2728 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_GTT) != 0); | |
2729 | obj->read_domains |= I915_GEM_DOMAIN_GTT; | |
2730 | if (write) { | |
2731 | obj->write_domain = I915_GEM_DOMAIN_GTT; | |
2732 | obj_priv->dirty = 1; | |
2ef7eeaa EA |
2733 | } |
2734 | ||
1c5d22f7 CW |
2735 | trace_i915_gem_object_change_domain(obj, |
2736 | old_read_domains, | |
2737 | old_write_domain); | |
2738 | ||
e47c68e9 EA |
2739 | return 0; |
2740 | } | |
2741 | ||
b9241ea3 ZW |
2742 | /* |
2743 | * Prepare buffer for display plane. Use uninterruptible for possible flush | |
2744 | * wait, as in modesetting process we're not supposed to be interrupted. | |
2745 | */ | |
2746 | int | |
2747 | i915_gem_object_set_to_display_plane(struct drm_gem_object *obj) | |
2748 | { | |
2749 | struct drm_device *dev = obj->dev; | |
23010e43 | 2750 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
b9241ea3 ZW |
2751 | uint32_t old_write_domain, old_read_domains; |
2752 | int ret; | |
2753 | ||
2754 | /* Not valid to be called on unbound objects. */ | |
2755 | if (obj_priv->gtt_space == NULL) | |
2756 | return -EINVAL; | |
2757 | ||
2dafb1e0 CW |
2758 | ret = i915_gem_object_flush_gpu_write_domain(obj); |
2759 | if (ret) | |
2760 | return ret; | |
b9241ea3 ZW |
2761 | |
2762 | /* Wait on any GPU rendering and flushing to occur. */ | |
2763 | if (obj_priv->active) { | |
2764 | #if WATCH_BUF | |
2765 | DRM_INFO("%s: object %p wait for seqno %08x\n", | |
2766 | __func__, obj, obj_priv->last_rendering_seqno); | |
2767 | #endif | |
852835f3 ZN |
2768 | ret = i915_do_wait_request(dev, |
2769 | obj_priv->last_rendering_seqno, | |
2770 | 0, | |
2771 | obj_priv->ring); | |
b9241ea3 ZW |
2772 | if (ret != 0) |
2773 | return ret; | |
2774 | } | |
2775 | ||
b118c1e3 CW |
2776 | i915_gem_object_flush_cpu_write_domain(obj); |
2777 | ||
b9241ea3 ZW |
2778 | old_write_domain = obj->write_domain; |
2779 | old_read_domains = obj->read_domains; | |
2780 | ||
b9241ea3 ZW |
2781 | /* It should now be out of any other write domains, and we can update |
2782 | * the domain values for our changes. | |
2783 | */ | |
2784 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_GTT) != 0); | |
b118c1e3 | 2785 | obj->read_domains = I915_GEM_DOMAIN_GTT; |
b9241ea3 ZW |
2786 | obj->write_domain = I915_GEM_DOMAIN_GTT; |
2787 | obj_priv->dirty = 1; | |
2788 | ||
2789 | trace_i915_gem_object_change_domain(obj, | |
2790 | old_read_domains, | |
2791 | old_write_domain); | |
2792 | ||
2793 | return 0; | |
2794 | } | |
2795 | ||
e47c68e9 EA |
2796 | /** |
2797 | * Moves a single object to the CPU read, and possibly write domain. | |
2798 | * | |
2799 | * This function returns when the move is complete, including waiting on | |
2800 | * flushes to occur. | |
2801 | */ | |
2802 | static int | |
2803 | i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, int write) | |
2804 | { | |
1c5d22f7 | 2805 | uint32_t old_write_domain, old_read_domains; |
e47c68e9 EA |
2806 | int ret; |
2807 | ||
2dafb1e0 CW |
2808 | ret = i915_gem_object_flush_gpu_write_domain(obj); |
2809 | if (ret) | |
2810 | return ret; | |
2811 | ||
2ef7eeaa | 2812 | /* Wait on any GPU rendering and flushing to occur. */ |
e47c68e9 EA |
2813 | ret = i915_gem_object_wait_rendering(obj); |
2814 | if (ret != 0) | |
2815 | return ret; | |
2ef7eeaa | 2816 | |
e47c68e9 | 2817 | i915_gem_object_flush_gtt_write_domain(obj); |
2ef7eeaa | 2818 | |
e47c68e9 EA |
2819 | /* If we have a partially-valid cache of the object in the CPU, |
2820 | * finish invalidating it and free the per-page flags. | |
2ef7eeaa | 2821 | */ |
e47c68e9 | 2822 | i915_gem_object_set_to_full_cpu_read_domain(obj); |
2ef7eeaa | 2823 | |
1c5d22f7 CW |
2824 | old_write_domain = obj->write_domain; |
2825 | old_read_domains = obj->read_domains; | |
2826 | ||
e47c68e9 EA |
2827 | /* Flush the CPU cache if it's still invalid. */ |
2828 | if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) { | |
2ef7eeaa | 2829 | i915_gem_clflush_object(obj); |
2ef7eeaa | 2830 | |
e47c68e9 | 2831 | obj->read_domains |= I915_GEM_DOMAIN_CPU; |
2ef7eeaa EA |
2832 | } |
2833 | ||
2834 | /* It should now be out of any other write domains, and we can update | |
2835 | * the domain values for our changes. | |
2836 | */ | |
e47c68e9 EA |
2837 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0); |
2838 | ||
2839 | /* If we're writing through the CPU, then the GPU read domains will | |
2840 | * need to be invalidated at next use. | |
2841 | */ | |
2842 | if (write) { | |
2843 | obj->read_domains &= I915_GEM_DOMAIN_CPU; | |
2844 | obj->write_domain = I915_GEM_DOMAIN_CPU; | |
2845 | } | |
2ef7eeaa | 2846 | |
1c5d22f7 CW |
2847 | trace_i915_gem_object_change_domain(obj, |
2848 | old_read_domains, | |
2849 | old_write_domain); | |
2850 | ||
2ef7eeaa EA |
2851 | return 0; |
2852 | } | |
2853 | ||
673a394b EA |
2854 | /* |
2855 | * Set the next domain for the specified object. This | |
2856 | * may not actually perform the necessary flushing/invaliding though, | |
2857 | * as that may want to be batched with other set_domain operations | |
2858 | * | |
2859 | * This is (we hope) the only really tricky part of gem. The goal | |
2860 | * is fairly simple -- track which caches hold bits of the object | |
2861 | * and make sure they remain coherent. A few concrete examples may | |
2862 | * help to explain how it works. For shorthand, we use the notation | |
2863 | * (read_domains, write_domain), e.g. (CPU, CPU) to indicate the | |
2864 | * a pair of read and write domain masks. | |
2865 | * | |
2866 | * Case 1: the batch buffer | |
2867 | * | |
2868 | * 1. Allocated | |
2869 | * 2. Written by CPU | |
2870 | * 3. Mapped to GTT | |
2871 | * 4. Read by GPU | |
2872 | * 5. Unmapped from GTT | |
2873 | * 6. Freed | |
2874 | * | |
2875 | * Let's take these a step at a time | |
2876 | * | |
2877 | * 1. Allocated | |
2878 | * Pages allocated from the kernel may still have | |
2879 | * cache contents, so we set them to (CPU, CPU) always. | |
2880 | * 2. Written by CPU (using pwrite) | |
2881 | * The pwrite function calls set_domain (CPU, CPU) and | |
2882 | * this function does nothing (as nothing changes) | |
2883 | * 3. Mapped by GTT | |
2884 | * This function asserts that the object is not | |
2885 | * currently in any GPU-based read or write domains | |
2886 | * 4. Read by GPU | |
2887 | * i915_gem_execbuffer calls set_domain (COMMAND, 0). | |
2888 | * As write_domain is zero, this function adds in the | |
2889 | * current read domains (CPU+COMMAND, 0). | |
2890 | * flush_domains is set to CPU. | |
2891 | * invalidate_domains is set to COMMAND | |
2892 | * clflush is run to get data out of the CPU caches | |
2893 | * then i915_dev_set_domain calls i915_gem_flush to | |
2894 | * emit an MI_FLUSH and drm_agp_chipset_flush | |
2895 | * 5. Unmapped from GTT | |
2896 | * i915_gem_object_unbind calls set_domain (CPU, CPU) | |
2897 | * flush_domains and invalidate_domains end up both zero | |
2898 | * so no flushing/invalidating happens | |
2899 | * 6. Freed | |
2900 | * yay, done | |
2901 | * | |
2902 | * Case 2: The shared render buffer | |
2903 | * | |
2904 | * 1. Allocated | |
2905 | * 2. Mapped to GTT | |
2906 | * 3. Read/written by GPU | |
2907 | * 4. set_domain to (CPU,CPU) | |
2908 | * 5. Read/written by CPU | |
2909 | * 6. Read/written by GPU | |
2910 | * | |
2911 | * 1. Allocated | |
2912 | * Same as last example, (CPU, CPU) | |
2913 | * 2. Mapped to GTT | |
2914 | * Nothing changes (assertions find that it is not in the GPU) | |
2915 | * 3. Read/written by GPU | |
2916 | * execbuffer calls set_domain (RENDER, RENDER) | |
2917 | * flush_domains gets CPU | |
2918 | * invalidate_domains gets GPU | |
2919 | * clflush (obj) | |
2920 | * MI_FLUSH and drm_agp_chipset_flush | |
2921 | * 4. set_domain (CPU, CPU) | |
2922 | * flush_domains gets GPU | |
2923 | * invalidate_domains gets CPU | |
2924 | * wait_rendering (obj) to make sure all drawing is complete. | |
2925 | * This will include an MI_FLUSH to get the data from GPU | |
2926 | * to memory | |
2927 | * clflush (obj) to invalidate the CPU cache | |
2928 | * Another MI_FLUSH in i915_gem_flush (eliminate this somehow?) | |
2929 | * 5. Read/written by CPU | |
2930 | * cache lines are loaded and dirtied | |
2931 | * 6. Read written by GPU | |
2932 | * Same as last GPU access | |
2933 | * | |
2934 | * Case 3: The constant buffer | |
2935 | * | |
2936 | * 1. Allocated | |
2937 | * 2. Written by CPU | |
2938 | * 3. Read by GPU | |
2939 | * 4. Updated (written) by CPU again | |
2940 | * 5. Read by GPU | |
2941 | * | |
2942 | * 1. Allocated | |
2943 | * (CPU, CPU) | |
2944 | * 2. Written by CPU | |
2945 | * (CPU, CPU) | |
2946 | * 3. Read by GPU | |
2947 | * (CPU+RENDER, 0) | |
2948 | * flush_domains = CPU | |
2949 | * invalidate_domains = RENDER | |
2950 | * clflush (obj) | |
2951 | * MI_FLUSH | |
2952 | * drm_agp_chipset_flush | |
2953 | * 4. Updated (written) by CPU again | |
2954 | * (CPU, CPU) | |
2955 | * flush_domains = 0 (no previous write domain) | |
2956 | * invalidate_domains = 0 (no new read domains) | |
2957 | * 5. Read by GPU | |
2958 | * (CPU+RENDER, 0) | |
2959 | * flush_domains = CPU | |
2960 | * invalidate_domains = RENDER | |
2961 | * clflush (obj) | |
2962 | * MI_FLUSH | |
2963 | * drm_agp_chipset_flush | |
2964 | */ | |
c0d90829 | 2965 | static void |
8b0e378a | 2966 | i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj) |
673a394b EA |
2967 | { |
2968 | struct drm_device *dev = obj->dev; | |
88f356b7 | 2969 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 2970 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
2971 | uint32_t invalidate_domains = 0; |
2972 | uint32_t flush_domains = 0; | |
1c5d22f7 | 2973 | uint32_t old_read_domains; |
e47c68e9 | 2974 | |
8b0e378a EA |
2975 | BUG_ON(obj->pending_read_domains & I915_GEM_DOMAIN_CPU); |
2976 | BUG_ON(obj->pending_write_domain == I915_GEM_DOMAIN_CPU); | |
673a394b | 2977 | |
652c393a JB |
2978 | intel_mark_busy(dev, obj); |
2979 | ||
673a394b EA |
2980 | #if WATCH_BUF |
2981 | DRM_INFO("%s: object %p read %08x -> %08x write %08x -> %08x\n", | |
2982 | __func__, obj, | |
8b0e378a EA |
2983 | obj->read_domains, obj->pending_read_domains, |
2984 | obj->write_domain, obj->pending_write_domain); | |
673a394b EA |
2985 | #endif |
2986 | /* | |
2987 | * If the object isn't moving to a new write domain, | |
2988 | * let the object stay in multiple read domains | |
2989 | */ | |
8b0e378a EA |
2990 | if (obj->pending_write_domain == 0) |
2991 | obj->pending_read_domains |= obj->read_domains; | |
673a394b EA |
2992 | else |
2993 | obj_priv->dirty = 1; | |
2994 | ||
2995 | /* | |
2996 | * Flush the current write domain if | |
2997 | * the new read domains don't match. Invalidate | |
2998 | * any read domains which differ from the old | |
2999 | * write domain | |
3000 | */ | |
8b0e378a EA |
3001 | if (obj->write_domain && |
3002 | obj->write_domain != obj->pending_read_domains) { | |
673a394b | 3003 | flush_domains |= obj->write_domain; |
8b0e378a EA |
3004 | invalidate_domains |= |
3005 | obj->pending_read_domains & ~obj->write_domain; | |
673a394b EA |
3006 | } |
3007 | /* | |
3008 | * Invalidate any read caches which may have | |
3009 | * stale data. That is, any new read domains. | |
3010 | */ | |
8b0e378a | 3011 | invalidate_domains |= obj->pending_read_domains & ~obj->read_domains; |
673a394b EA |
3012 | if ((flush_domains | invalidate_domains) & I915_GEM_DOMAIN_CPU) { |
3013 | #if WATCH_BUF | |
3014 | DRM_INFO("%s: CPU domain flush %08x invalidate %08x\n", | |
3015 | __func__, flush_domains, invalidate_domains); | |
3016 | #endif | |
673a394b EA |
3017 | i915_gem_clflush_object(obj); |
3018 | } | |
3019 | ||
1c5d22f7 CW |
3020 | old_read_domains = obj->read_domains; |
3021 | ||
efbeed96 EA |
3022 | /* The actual obj->write_domain will be updated with |
3023 | * pending_write_domain after we emit the accumulated flush for all | |
3024 | * of our domain changes in execbuffers (which clears objects' | |
3025 | * write_domains). So if we have a current write domain that we | |
3026 | * aren't changing, set pending_write_domain to that. | |
3027 | */ | |
3028 | if (flush_domains == 0 && obj->pending_write_domain == 0) | |
3029 | obj->pending_write_domain = obj->write_domain; | |
8b0e378a | 3030 | obj->read_domains = obj->pending_read_domains; |
673a394b | 3031 | |
88f356b7 CW |
3032 | if (flush_domains & I915_GEM_GPU_DOMAINS) { |
3033 | if (obj_priv->ring == &dev_priv->render_ring) | |
3034 | dev_priv->flush_rings |= FLUSH_RENDER_RING; | |
3035 | else if (obj_priv->ring == &dev_priv->bsd_ring) | |
3036 | dev_priv->flush_rings |= FLUSH_BSD_RING; | |
3037 | } | |
3038 | ||
673a394b EA |
3039 | dev->invalidate_domains |= invalidate_domains; |
3040 | dev->flush_domains |= flush_domains; | |
3041 | #if WATCH_BUF | |
3042 | DRM_INFO("%s: read %08x write %08x invalidate %08x flush %08x\n", | |
3043 | __func__, | |
3044 | obj->read_domains, obj->write_domain, | |
3045 | dev->invalidate_domains, dev->flush_domains); | |
3046 | #endif | |
1c5d22f7 CW |
3047 | |
3048 | trace_i915_gem_object_change_domain(obj, | |
3049 | old_read_domains, | |
3050 | obj->write_domain); | |
673a394b EA |
3051 | } |
3052 | ||
3053 | /** | |
e47c68e9 | 3054 | * Moves the object from a partially CPU read to a full one. |
673a394b | 3055 | * |
e47c68e9 EA |
3056 | * Note that this only resolves i915_gem_object_set_cpu_read_domain_range(), |
3057 | * and doesn't handle transitioning from !(read_domains & I915_GEM_DOMAIN_CPU). | |
673a394b | 3058 | */ |
e47c68e9 EA |
3059 | static void |
3060 | i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj) | |
673a394b | 3061 | { |
23010e43 | 3062 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b | 3063 | |
e47c68e9 EA |
3064 | if (!obj_priv->page_cpu_valid) |
3065 | return; | |
3066 | ||
3067 | /* If we're partially in the CPU read domain, finish moving it in. | |
3068 | */ | |
3069 | if (obj->read_domains & I915_GEM_DOMAIN_CPU) { | |
3070 | int i; | |
3071 | ||
3072 | for (i = 0; i <= (obj->size - 1) / PAGE_SIZE; i++) { | |
3073 | if (obj_priv->page_cpu_valid[i]) | |
3074 | continue; | |
856fa198 | 3075 | drm_clflush_pages(obj_priv->pages + i, 1); |
e47c68e9 | 3076 | } |
e47c68e9 EA |
3077 | } |
3078 | ||
3079 | /* Free the page_cpu_valid mappings which are now stale, whether | |
3080 | * or not we've got I915_GEM_DOMAIN_CPU. | |
3081 | */ | |
9a298b2a | 3082 | kfree(obj_priv->page_cpu_valid); |
e47c68e9 EA |
3083 | obj_priv->page_cpu_valid = NULL; |
3084 | } | |
3085 | ||
3086 | /** | |
3087 | * Set the CPU read domain on a range of the object. | |
3088 | * | |
3089 | * The object ends up with I915_GEM_DOMAIN_CPU in its read flags although it's | |
3090 | * not entirely valid. The page_cpu_valid member of the object flags which | |
3091 | * pages have been flushed, and will be respected by | |
3092 | * i915_gem_object_set_to_cpu_domain() if it's called on to get a valid mapping | |
3093 | * of the whole object. | |
3094 | * | |
3095 | * This function returns when the move is complete, including waiting on | |
3096 | * flushes to occur. | |
3097 | */ | |
3098 | static int | |
3099 | i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj, | |
3100 | uint64_t offset, uint64_t size) | |
3101 | { | |
23010e43 | 3102 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
1c5d22f7 | 3103 | uint32_t old_read_domains; |
e47c68e9 | 3104 | int i, ret; |
673a394b | 3105 | |
e47c68e9 EA |
3106 | if (offset == 0 && size == obj->size) |
3107 | return i915_gem_object_set_to_cpu_domain(obj, 0); | |
673a394b | 3108 | |
2dafb1e0 CW |
3109 | ret = i915_gem_object_flush_gpu_write_domain(obj); |
3110 | if (ret) | |
3111 | return ret; | |
3112 | ||
e47c68e9 | 3113 | /* Wait on any GPU rendering and flushing to occur. */ |
6a47baa6 | 3114 | ret = i915_gem_object_wait_rendering(obj); |
e47c68e9 | 3115 | if (ret != 0) |
6a47baa6 | 3116 | return ret; |
e47c68e9 EA |
3117 | i915_gem_object_flush_gtt_write_domain(obj); |
3118 | ||
3119 | /* If we're already fully in the CPU read domain, we're done. */ | |
3120 | if (obj_priv->page_cpu_valid == NULL && | |
3121 | (obj->read_domains & I915_GEM_DOMAIN_CPU) != 0) | |
3122 | return 0; | |
673a394b | 3123 | |
e47c68e9 EA |
3124 | /* Otherwise, create/clear the per-page CPU read domain flag if we're |
3125 | * newly adding I915_GEM_DOMAIN_CPU | |
3126 | */ | |
673a394b | 3127 | if (obj_priv->page_cpu_valid == NULL) { |
9a298b2a EA |
3128 | obj_priv->page_cpu_valid = kzalloc(obj->size / PAGE_SIZE, |
3129 | GFP_KERNEL); | |
e47c68e9 EA |
3130 | if (obj_priv->page_cpu_valid == NULL) |
3131 | return -ENOMEM; | |
3132 | } else if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) | |
3133 | memset(obj_priv->page_cpu_valid, 0, obj->size / PAGE_SIZE); | |
673a394b EA |
3134 | |
3135 | /* Flush the cache on any pages that are still invalid from the CPU's | |
3136 | * perspective. | |
3137 | */ | |
e47c68e9 EA |
3138 | for (i = offset / PAGE_SIZE; i <= (offset + size - 1) / PAGE_SIZE; |
3139 | i++) { | |
673a394b EA |
3140 | if (obj_priv->page_cpu_valid[i]) |
3141 | continue; | |
3142 | ||
856fa198 | 3143 | drm_clflush_pages(obj_priv->pages + i, 1); |
673a394b EA |
3144 | |
3145 | obj_priv->page_cpu_valid[i] = 1; | |
3146 | } | |
3147 | ||
e47c68e9 EA |
3148 | /* It should now be out of any other write domains, and we can update |
3149 | * the domain values for our changes. | |
3150 | */ | |
3151 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0); | |
3152 | ||
1c5d22f7 | 3153 | old_read_domains = obj->read_domains; |
e47c68e9 EA |
3154 | obj->read_domains |= I915_GEM_DOMAIN_CPU; |
3155 | ||
1c5d22f7 CW |
3156 | trace_i915_gem_object_change_domain(obj, |
3157 | old_read_domains, | |
3158 | obj->write_domain); | |
3159 | ||
673a394b EA |
3160 | return 0; |
3161 | } | |
3162 | ||
673a394b EA |
3163 | /** |
3164 | * Pin an object to the GTT and evaluate the relocations landing in it. | |
3165 | */ | |
3166 | static int | |
3167 | i915_gem_object_pin_and_relocate(struct drm_gem_object *obj, | |
3168 | struct drm_file *file_priv, | |
76446cac | 3169 | struct drm_i915_gem_exec_object2 *entry, |
40a5f0de | 3170 | struct drm_i915_gem_relocation_entry *relocs) |
673a394b EA |
3171 | { |
3172 | struct drm_device *dev = obj->dev; | |
0839ccb8 | 3173 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 3174 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b | 3175 | int i, ret; |
0839ccb8 | 3176 | void __iomem *reloc_page; |
76446cac JB |
3177 | bool need_fence; |
3178 | ||
3179 | need_fence = entry->flags & EXEC_OBJECT_NEEDS_FENCE && | |
3180 | obj_priv->tiling_mode != I915_TILING_NONE; | |
3181 | ||
3182 | /* Check fence reg constraints and rebind if necessary */ | |
808b24d6 CW |
3183 | if (need_fence && |
3184 | !i915_gem_object_fence_offset_ok(obj, | |
3185 | obj_priv->tiling_mode)) { | |
3186 | ret = i915_gem_object_unbind(obj); | |
3187 | if (ret) | |
3188 | return ret; | |
3189 | } | |
673a394b EA |
3190 | |
3191 | /* Choose the GTT offset for our buffer and put it there. */ | |
3192 | ret = i915_gem_object_pin(obj, (uint32_t) entry->alignment); | |
3193 | if (ret) | |
3194 | return ret; | |
3195 | ||
76446cac JB |
3196 | /* |
3197 | * Pre-965 chips need a fence register set up in order to | |
3198 | * properly handle blits to/from tiled surfaces. | |
3199 | */ | |
3200 | if (need_fence) { | |
3201 | ret = i915_gem_object_get_fence_reg(obj); | |
3202 | if (ret != 0) { | |
76446cac JB |
3203 | i915_gem_object_unpin(obj); |
3204 | return ret; | |
3205 | } | |
3206 | } | |
3207 | ||
673a394b EA |
3208 | entry->offset = obj_priv->gtt_offset; |
3209 | ||
673a394b EA |
3210 | /* Apply the relocations, using the GTT aperture to avoid cache |
3211 | * flushing requirements. | |
3212 | */ | |
3213 | for (i = 0; i < entry->relocation_count; i++) { | |
40a5f0de | 3214 | struct drm_i915_gem_relocation_entry *reloc= &relocs[i]; |
673a394b EA |
3215 | struct drm_gem_object *target_obj; |
3216 | struct drm_i915_gem_object *target_obj_priv; | |
3043c60c EA |
3217 | uint32_t reloc_val, reloc_offset; |
3218 | uint32_t __iomem *reloc_entry; | |
673a394b | 3219 | |
673a394b | 3220 | target_obj = drm_gem_object_lookup(obj->dev, file_priv, |
40a5f0de | 3221 | reloc->target_handle); |
673a394b EA |
3222 | if (target_obj == NULL) { |
3223 | i915_gem_object_unpin(obj); | |
bf79cb91 | 3224 | return -ENOENT; |
673a394b | 3225 | } |
23010e43 | 3226 | target_obj_priv = to_intel_bo(target_obj); |
673a394b | 3227 | |
8542a0bb CW |
3228 | #if WATCH_RELOC |
3229 | DRM_INFO("%s: obj %p offset %08x target %d " | |
3230 | "read %08x write %08x gtt %08x " | |
3231 | "presumed %08x delta %08x\n", | |
3232 | __func__, | |
3233 | obj, | |
3234 | (int) reloc->offset, | |
3235 | (int) reloc->target_handle, | |
3236 | (int) reloc->read_domains, | |
3237 | (int) reloc->write_domain, | |
3238 | (int) target_obj_priv->gtt_offset, | |
3239 | (int) reloc->presumed_offset, | |
3240 | reloc->delta); | |
3241 | #endif | |
3242 | ||
673a394b EA |
3243 | /* The target buffer should have appeared before us in the |
3244 | * exec_object list, so it should have a GTT space bound by now. | |
3245 | */ | |
3246 | if (target_obj_priv->gtt_space == NULL) { | |
3247 | DRM_ERROR("No GTT space found for object %d\n", | |
40a5f0de | 3248 | reloc->target_handle); |
673a394b EA |
3249 | drm_gem_object_unreference(target_obj); |
3250 | i915_gem_object_unpin(obj); | |
3251 | return -EINVAL; | |
3252 | } | |
3253 | ||
8542a0bb | 3254 | /* Validate that the target is in a valid r/w GPU domain */ |
16edd550 DV |
3255 | if (reloc->write_domain & (reloc->write_domain - 1)) { |
3256 | DRM_ERROR("reloc with multiple write domains: " | |
3257 | "obj %p target %d offset %d " | |
3258 | "read %08x write %08x", | |
3259 | obj, reloc->target_handle, | |
3260 | (int) reloc->offset, | |
3261 | reloc->read_domains, | |
3262 | reloc->write_domain); | |
929f49bf JL |
3263 | drm_gem_object_unreference(target_obj); |
3264 | i915_gem_object_unpin(obj); | |
16edd550 DV |
3265 | return -EINVAL; |
3266 | } | |
40a5f0de EA |
3267 | if (reloc->write_domain & I915_GEM_DOMAIN_CPU || |
3268 | reloc->read_domains & I915_GEM_DOMAIN_CPU) { | |
e47c68e9 EA |
3269 | DRM_ERROR("reloc with read/write CPU domains: " |
3270 | "obj %p target %d offset %d " | |
3271 | "read %08x write %08x", | |
40a5f0de EA |
3272 | obj, reloc->target_handle, |
3273 | (int) reloc->offset, | |
3274 | reloc->read_domains, | |
3275 | reloc->write_domain); | |
491152b8 CW |
3276 | drm_gem_object_unreference(target_obj); |
3277 | i915_gem_object_unpin(obj); | |
e47c68e9 EA |
3278 | return -EINVAL; |
3279 | } | |
40a5f0de EA |
3280 | if (reloc->write_domain && target_obj->pending_write_domain && |
3281 | reloc->write_domain != target_obj->pending_write_domain) { | |
673a394b EA |
3282 | DRM_ERROR("Write domain conflict: " |
3283 | "obj %p target %d offset %d " | |
3284 | "new %08x old %08x\n", | |
40a5f0de EA |
3285 | obj, reloc->target_handle, |
3286 | (int) reloc->offset, | |
3287 | reloc->write_domain, | |
673a394b EA |
3288 | target_obj->pending_write_domain); |
3289 | drm_gem_object_unreference(target_obj); | |
3290 | i915_gem_object_unpin(obj); | |
3291 | return -EINVAL; | |
3292 | } | |
3293 | ||
40a5f0de EA |
3294 | target_obj->pending_read_domains |= reloc->read_domains; |
3295 | target_obj->pending_write_domain |= reloc->write_domain; | |
673a394b EA |
3296 | |
3297 | /* If the relocation already has the right value in it, no | |
3298 | * more work needs to be done. | |
3299 | */ | |
40a5f0de | 3300 | if (target_obj_priv->gtt_offset == reloc->presumed_offset) { |
673a394b EA |
3301 | drm_gem_object_unreference(target_obj); |
3302 | continue; | |
3303 | } | |
3304 | ||
8542a0bb CW |
3305 | /* Check that the relocation address is valid... */ |
3306 | if (reloc->offset > obj->size - 4) { | |
3307 | DRM_ERROR("Relocation beyond object bounds: " | |
3308 | "obj %p target %d offset %d size %d.\n", | |
3309 | obj, reloc->target_handle, | |
3310 | (int) reloc->offset, (int) obj->size); | |
3311 | drm_gem_object_unreference(target_obj); | |
3312 | i915_gem_object_unpin(obj); | |
3313 | return -EINVAL; | |
3314 | } | |
3315 | if (reloc->offset & 3) { | |
3316 | DRM_ERROR("Relocation not 4-byte aligned: " | |
3317 | "obj %p target %d offset %d.\n", | |
3318 | obj, reloc->target_handle, | |
3319 | (int) reloc->offset); | |
3320 | drm_gem_object_unreference(target_obj); | |
3321 | i915_gem_object_unpin(obj); | |
3322 | return -EINVAL; | |
3323 | } | |
3324 | ||
3325 | /* and points to somewhere within the target object. */ | |
3326 | if (reloc->delta >= target_obj->size) { | |
3327 | DRM_ERROR("Relocation beyond target object bounds: " | |
3328 | "obj %p target %d delta %d size %d.\n", | |
3329 | obj, reloc->target_handle, | |
3330 | (int) reloc->delta, (int) target_obj->size); | |
3331 | drm_gem_object_unreference(target_obj); | |
3332 | i915_gem_object_unpin(obj); | |
3333 | return -EINVAL; | |
3334 | } | |
3335 | ||
2ef7eeaa EA |
3336 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); |
3337 | if (ret != 0) { | |
3338 | drm_gem_object_unreference(target_obj); | |
3339 | i915_gem_object_unpin(obj); | |
3340 | return -EINVAL; | |
673a394b EA |
3341 | } |
3342 | ||
3343 | /* Map the page containing the relocation we're going to | |
3344 | * perform. | |
3345 | */ | |
40a5f0de | 3346 | reloc_offset = obj_priv->gtt_offset + reloc->offset; |
0839ccb8 KP |
3347 | reloc_page = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping, |
3348 | (reloc_offset & | |
fca3ec01 CW |
3349 | ~(PAGE_SIZE - 1)), |
3350 | KM_USER0); | |
3043c60c | 3351 | reloc_entry = (uint32_t __iomem *)(reloc_page + |
0839ccb8 | 3352 | (reloc_offset & (PAGE_SIZE - 1))); |
40a5f0de | 3353 | reloc_val = target_obj_priv->gtt_offset + reloc->delta; |
673a394b EA |
3354 | |
3355 | #if WATCH_BUF | |
3356 | DRM_INFO("Applied relocation: %p@0x%08x %08x -> %08x\n", | |
40a5f0de | 3357 | obj, (unsigned int) reloc->offset, |
673a394b EA |
3358 | readl(reloc_entry), reloc_val); |
3359 | #endif | |
3360 | writel(reloc_val, reloc_entry); | |
fca3ec01 | 3361 | io_mapping_unmap_atomic(reloc_page, KM_USER0); |
673a394b | 3362 | |
40a5f0de EA |
3363 | /* The updated presumed offset for this entry will be |
3364 | * copied back out to the user. | |
673a394b | 3365 | */ |
40a5f0de | 3366 | reloc->presumed_offset = target_obj_priv->gtt_offset; |
673a394b EA |
3367 | |
3368 | drm_gem_object_unreference(target_obj); | |
3369 | } | |
3370 | ||
673a394b EA |
3371 | #if WATCH_BUF |
3372 | if (0) | |
3373 | i915_gem_dump_object(obj, 128, __func__, ~0); | |
3374 | #endif | |
3375 | return 0; | |
3376 | } | |
3377 | ||
673a394b EA |
3378 | /* Throttle our rendering by waiting until the ring has completed our requests |
3379 | * emitted over 20 msec ago. | |
3380 | * | |
b962442e EA |
3381 | * Note that if we were to use the current jiffies each time around the loop, |
3382 | * we wouldn't escape the function with any frames outstanding if the time to | |
3383 | * render a frame was over 20ms. | |
3384 | * | |
673a394b EA |
3385 | * This should get us reasonable parallelism between CPU and GPU but also |
3386 | * relatively low latency when blocking on a particular request to finish. | |
3387 | */ | |
3388 | static int | |
3389 | i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file_priv) | |
3390 | { | |
3391 | struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; | |
3392 | int ret = 0; | |
b962442e | 3393 | unsigned long recent_enough = jiffies - msecs_to_jiffies(20); |
673a394b EA |
3394 | |
3395 | mutex_lock(&dev->struct_mutex); | |
b962442e EA |
3396 | while (!list_empty(&i915_file_priv->mm.request_list)) { |
3397 | struct drm_i915_gem_request *request; | |
3398 | ||
3399 | request = list_first_entry(&i915_file_priv->mm.request_list, | |
3400 | struct drm_i915_gem_request, | |
3401 | client_list); | |
3402 | ||
3403 | if (time_after_eq(request->emitted_jiffies, recent_enough)) | |
3404 | break; | |
3405 | ||
852835f3 | 3406 | ret = i915_wait_request(dev, request->seqno, request->ring); |
b962442e EA |
3407 | if (ret != 0) |
3408 | break; | |
3409 | } | |
673a394b | 3410 | mutex_unlock(&dev->struct_mutex); |
b962442e | 3411 | |
673a394b EA |
3412 | return ret; |
3413 | } | |
3414 | ||
40a5f0de | 3415 | static int |
76446cac | 3416 | i915_gem_get_relocs_from_user(struct drm_i915_gem_exec_object2 *exec_list, |
40a5f0de EA |
3417 | uint32_t buffer_count, |
3418 | struct drm_i915_gem_relocation_entry **relocs) | |
3419 | { | |
3420 | uint32_t reloc_count = 0, reloc_index = 0, i; | |
3421 | int ret; | |
3422 | ||
3423 | *relocs = NULL; | |
3424 | for (i = 0; i < buffer_count; i++) { | |
3425 | if (reloc_count + exec_list[i].relocation_count < reloc_count) | |
3426 | return -EINVAL; | |
3427 | reloc_count += exec_list[i].relocation_count; | |
3428 | } | |
3429 | ||
8e7d2b2c | 3430 | *relocs = drm_calloc_large(reloc_count, sizeof(**relocs)); |
76446cac JB |
3431 | if (*relocs == NULL) { |
3432 | DRM_ERROR("failed to alloc relocs, count %d\n", reloc_count); | |
40a5f0de | 3433 | return -ENOMEM; |
76446cac | 3434 | } |
40a5f0de EA |
3435 | |
3436 | for (i = 0; i < buffer_count; i++) { | |
3437 | struct drm_i915_gem_relocation_entry __user *user_relocs; | |
3438 | ||
3439 | user_relocs = (void __user *)(uintptr_t)exec_list[i].relocs_ptr; | |
3440 | ||
3441 | ret = copy_from_user(&(*relocs)[reloc_index], | |
3442 | user_relocs, | |
3443 | exec_list[i].relocation_count * | |
3444 | sizeof(**relocs)); | |
3445 | if (ret != 0) { | |
8e7d2b2c | 3446 | drm_free_large(*relocs); |
40a5f0de | 3447 | *relocs = NULL; |
2bc43b5c | 3448 | return -EFAULT; |
40a5f0de EA |
3449 | } |
3450 | ||
3451 | reloc_index += exec_list[i].relocation_count; | |
3452 | } | |
3453 | ||
2bc43b5c | 3454 | return 0; |
40a5f0de EA |
3455 | } |
3456 | ||
3457 | static int | |
76446cac | 3458 | i915_gem_put_relocs_to_user(struct drm_i915_gem_exec_object2 *exec_list, |
40a5f0de EA |
3459 | uint32_t buffer_count, |
3460 | struct drm_i915_gem_relocation_entry *relocs) | |
3461 | { | |
3462 | uint32_t reloc_count = 0, i; | |
2bc43b5c | 3463 | int ret = 0; |
40a5f0de | 3464 | |
93533c29 CW |
3465 | if (relocs == NULL) |
3466 | return 0; | |
3467 | ||
40a5f0de EA |
3468 | for (i = 0; i < buffer_count; i++) { |
3469 | struct drm_i915_gem_relocation_entry __user *user_relocs; | |
2bc43b5c | 3470 | int unwritten; |
40a5f0de EA |
3471 | |
3472 | user_relocs = (void __user *)(uintptr_t)exec_list[i].relocs_ptr; | |
3473 | ||
2bc43b5c FM |
3474 | unwritten = copy_to_user(user_relocs, |
3475 | &relocs[reloc_count], | |
3476 | exec_list[i].relocation_count * | |
3477 | sizeof(*relocs)); | |
3478 | ||
3479 | if (unwritten) { | |
3480 | ret = -EFAULT; | |
3481 | goto err; | |
40a5f0de EA |
3482 | } |
3483 | ||
3484 | reloc_count += exec_list[i].relocation_count; | |
3485 | } | |
3486 | ||
2bc43b5c | 3487 | err: |
8e7d2b2c | 3488 | drm_free_large(relocs); |
40a5f0de EA |
3489 | |
3490 | return ret; | |
3491 | } | |
3492 | ||
83d60795 | 3493 | static int |
76446cac | 3494 | i915_gem_check_execbuffer (struct drm_i915_gem_execbuffer2 *exec, |
83d60795 CW |
3495 | uint64_t exec_offset) |
3496 | { | |
3497 | uint32_t exec_start, exec_len; | |
3498 | ||
3499 | exec_start = (uint32_t) exec_offset + exec->batch_start_offset; | |
3500 | exec_len = (uint32_t) exec->batch_len; | |
3501 | ||
3502 | if ((exec_start | exec_len) & 0x7) | |
3503 | return -EINVAL; | |
3504 | ||
3505 | if (!exec_start) | |
3506 | return -EINVAL; | |
3507 | ||
3508 | return 0; | |
3509 | } | |
3510 | ||
6b95a207 KH |
3511 | static int |
3512 | i915_gem_wait_for_pending_flip(struct drm_device *dev, | |
3513 | struct drm_gem_object **object_list, | |
3514 | int count) | |
3515 | { | |
3516 | drm_i915_private_t *dev_priv = dev->dev_private; | |
3517 | struct drm_i915_gem_object *obj_priv; | |
3518 | DEFINE_WAIT(wait); | |
3519 | int i, ret = 0; | |
3520 | ||
3521 | for (;;) { | |
3522 | prepare_to_wait(&dev_priv->pending_flip_queue, | |
3523 | &wait, TASK_INTERRUPTIBLE); | |
3524 | for (i = 0; i < count; i++) { | |
23010e43 | 3525 | obj_priv = to_intel_bo(object_list[i]); |
6b95a207 KH |
3526 | if (atomic_read(&obj_priv->pending_flip) > 0) |
3527 | break; | |
3528 | } | |
3529 | if (i == count) | |
3530 | break; | |
3531 | ||
3532 | if (!signal_pending(current)) { | |
3533 | mutex_unlock(&dev->struct_mutex); | |
3534 | schedule(); | |
3535 | mutex_lock(&dev->struct_mutex); | |
3536 | continue; | |
3537 | } | |
3538 | ret = -ERESTARTSYS; | |
3539 | break; | |
3540 | } | |
3541 | finish_wait(&dev_priv->pending_flip_queue, &wait); | |
3542 | ||
3543 | return ret; | |
3544 | } | |
3545 | ||
43b27f40 | 3546 | |
673a394b | 3547 | int |
76446cac JB |
3548 | i915_gem_do_execbuffer(struct drm_device *dev, void *data, |
3549 | struct drm_file *file_priv, | |
3550 | struct drm_i915_gem_execbuffer2 *args, | |
3551 | struct drm_i915_gem_exec_object2 *exec_list) | |
673a394b EA |
3552 | { |
3553 | drm_i915_private_t *dev_priv = dev->dev_private; | |
673a394b EA |
3554 | struct drm_gem_object **object_list = NULL; |
3555 | struct drm_gem_object *batch_obj; | |
b70d11da | 3556 | struct drm_i915_gem_object *obj_priv; |
201361a5 | 3557 | struct drm_clip_rect *cliprects = NULL; |
93533c29 | 3558 | struct drm_i915_gem_relocation_entry *relocs = NULL; |
76446cac | 3559 | int ret = 0, ret2, i, pinned = 0; |
673a394b | 3560 | uint64_t exec_offset; |
40a5f0de | 3561 | uint32_t seqno, flush_domains, reloc_index; |
6b95a207 | 3562 | int pin_tries, flips; |
673a394b | 3563 | |
852835f3 ZN |
3564 | struct intel_ring_buffer *ring = NULL; |
3565 | ||
673a394b EA |
3566 | #if WATCH_EXEC |
3567 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", | |
3568 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); | |
3569 | #endif | |
d1b851fc ZN |
3570 | if (args->flags & I915_EXEC_BSD) { |
3571 | if (!HAS_BSD(dev)) { | |
3572 | DRM_ERROR("execbuf with wrong flag\n"); | |
3573 | return -EINVAL; | |
3574 | } | |
3575 | ring = &dev_priv->bsd_ring; | |
3576 | } else { | |
3577 | ring = &dev_priv->render_ring; | |
3578 | } | |
3579 | ||
4f481ed2 EA |
3580 | if (args->buffer_count < 1) { |
3581 | DRM_ERROR("execbuf with %d buffers\n", args->buffer_count); | |
3582 | return -EINVAL; | |
3583 | } | |
c8e0f93a | 3584 | object_list = drm_malloc_ab(sizeof(*object_list), args->buffer_count); |
76446cac JB |
3585 | if (object_list == NULL) { |
3586 | DRM_ERROR("Failed to allocate object list for %d buffers\n", | |
673a394b EA |
3587 | args->buffer_count); |
3588 | ret = -ENOMEM; | |
3589 | goto pre_mutex_err; | |
3590 | } | |
673a394b | 3591 | |
201361a5 | 3592 | if (args->num_cliprects != 0) { |
9a298b2a EA |
3593 | cliprects = kcalloc(args->num_cliprects, sizeof(*cliprects), |
3594 | GFP_KERNEL); | |
a40e8d31 OA |
3595 | if (cliprects == NULL) { |
3596 | ret = -ENOMEM; | |
201361a5 | 3597 | goto pre_mutex_err; |
a40e8d31 | 3598 | } |
201361a5 EA |
3599 | |
3600 | ret = copy_from_user(cliprects, | |
3601 | (struct drm_clip_rect __user *) | |
3602 | (uintptr_t) args->cliprects_ptr, | |
3603 | sizeof(*cliprects) * args->num_cliprects); | |
3604 | if (ret != 0) { | |
3605 | DRM_ERROR("copy %d cliprects failed: %d\n", | |
3606 | args->num_cliprects, ret); | |
c877cdce | 3607 | ret = -EFAULT; |
201361a5 EA |
3608 | goto pre_mutex_err; |
3609 | } | |
3610 | } | |
3611 | ||
40a5f0de EA |
3612 | ret = i915_gem_get_relocs_from_user(exec_list, args->buffer_count, |
3613 | &relocs); | |
3614 | if (ret != 0) | |
3615 | goto pre_mutex_err; | |
3616 | ||
673a394b EA |
3617 | mutex_lock(&dev->struct_mutex); |
3618 | ||
3619 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
3620 | ||
ba1234d1 | 3621 | if (atomic_read(&dev_priv->mm.wedged)) { |
673a394b | 3622 | mutex_unlock(&dev->struct_mutex); |
a198bc80 CW |
3623 | ret = -EIO; |
3624 | goto pre_mutex_err; | |
673a394b EA |
3625 | } |
3626 | ||
3627 | if (dev_priv->mm.suspended) { | |
673a394b | 3628 | mutex_unlock(&dev->struct_mutex); |
a198bc80 CW |
3629 | ret = -EBUSY; |
3630 | goto pre_mutex_err; | |
673a394b EA |
3631 | } |
3632 | ||
ac94a962 | 3633 | /* Look up object handles */ |
6b95a207 | 3634 | flips = 0; |
673a394b EA |
3635 | for (i = 0; i < args->buffer_count; i++) { |
3636 | object_list[i] = drm_gem_object_lookup(dev, file_priv, | |
3637 | exec_list[i].handle); | |
3638 | if (object_list[i] == NULL) { | |
3639 | DRM_ERROR("Invalid object handle %d at index %d\n", | |
3640 | exec_list[i].handle, i); | |
0ce907f8 CW |
3641 | /* prevent error path from reading uninitialized data */ |
3642 | args->buffer_count = i + 1; | |
bf79cb91 | 3643 | ret = -ENOENT; |
673a394b EA |
3644 | goto err; |
3645 | } | |
b70d11da | 3646 | |
23010e43 | 3647 | obj_priv = to_intel_bo(object_list[i]); |
b70d11da KH |
3648 | if (obj_priv->in_execbuffer) { |
3649 | DRM_ERROR("Object %p appears more than once in object list\n", | |
3650 | object_list[i]); | |
0ce907f8 CW |
3651 | /* prevent error path from reading uninitialized data */ |
3652 | args->buffer_count = i + 1; | |
bf79cb91 | 3653 | ret = -EINVAL; |
b70d11da KH |
3654 | goto err; |
3655 | } | |
3656 | obj_priv->in_execbuffer = true; | |
6b95a207 KH |
3657 | flips += atomic_read(&obj_priv->pending_flip); |
3658 | } | |
3659 | ||
3660 | if (flips > 0) { | |
3661 | ret = i915_gem_wait_for_pending_flip(dev, object_list, | |
3662 | args->buffer_count); | |
3663 | if (ret) | |
3664 | goto err; | |
ac94a962 | 3665 | } |
673a394b | 3666 | |
ac94a962 KP |
3667 | /* Pin and relocate */ |
3668 | for (pin_tries = 0; ; pin_tries++) { | |
3669 | ret = 0; | |
40a5f0de EA |
3670 | reloc_index = 0; |
3671 | ||
ac94a962 KP |
3672 | for (i = 0; i < args->buffer_count; i++) { |
3673 | object_list[i]->pending_read_domains = 0; | |
3674 | object_list[i]->pending_write_domain = 0; | |
3675 | ret = i915_gem_object_pin_and_relocate(object_list[i], | |
3676 | file_priv, | |
40a5f0de EA |
3677 | &exec_list[i], |
3678 | &relocs[reloc_index]); | |
ac94a962 KP |
3679 | if (ret) |
3680 | break; | |
3681 | pinned = i + 1; | |
40a5f0de | 3682 | reloc_index += exec_list[i].relocation_count; |
ac94a962 KP |
3683 | } |
3684 | /* success */ | |
3685 | if (ret == 0) | |
3686 | break; | |
3687 | ||
3688 | /* error other than GTT full, or we've already tried again */ | |
2939e1f5 | 3689 | if (ret != -ENOSPC || pin_tries >= 1) { |
07f73f69 CW |
3690 | if (ret != -ERESTARTSYS) { |
3691 | unsigned long long total_size = 0; | |
3d1cc470 CW |
3692 | int num_fences = 0; |
3693 | for (i = 0; i < args->buffer_count; i++) { | |
43b27f40 | 3694 | obj_priv = to_intel_bo(object_list[i]); |
3d1cc470 | 3695 | |
07f73f69 | 3696 | total_size += object_list[i]->size; |
3d1cc470 CW |
3697 | num_fences += |
3698 | exec_list[i].flags & EXEC_OBJECT_NEEDS_FENCE && | |
3699 | obj_priv->tiling_mode != I915_TILING_NONE; | |
3700 | } | |
3701 | DRM_ERROR("Failed to pin buffer %d of %d, total %llu bytes, %d fences: %d\n", | |
07f73f69 | 3702 | pinned+1, args->buffer_count, |
3d1cc470 CW |
3703 | total_size, num_fences, |
3704 | ret); | |
07f73f69 CW |
3705 | DRM_ERROR("%d objects [%d pinned], " |
3706 | "%d object bytes [%d pinned], " | |
3707 | "%d/%d gtt bytes\n", | |
3708 | atomic_read(&dev->object_count), | |
3709 | atomic_read(&dev->pin_count), | |
3710 | atomic_read(&dev->object_memory), | |
3711 | atomic_read(&dev->pin_memory), | |
3712 | atomic_read(&dev->gtt_memory), | |
3713 | dev->gtt_total); | |
3714 | } | |
673a394b EA |
3715 | goto err; |
3716 | } | |
ac94a962 KP |
3717 | |
3718 | /* unpin all of our buffers */ | |
3719 | for (i = 0; i < pinned; i++) | |
3720 | i915_gem_object_unpin(object_list[i]); | |
b1177636 | 3721 | pinned = 0; |
ac94a962 KP |
3722 | |
3723 | /* evict everyone we can from the aperture */ | |
3724 | ret = i915_gem_evict_everything(dev); | |
07f73f69 | 3725 | if (ret && ret != -ENOSPC) |
ac94a962 | 3726 | goto err; |
673a394b EA |
3727 | } |
3728 | ||
3729 | /* Set the pending read domains for the batch buffer to COMMAND */ | |
3730 | batch_obj = object_list[args->buffer_count-1]; | |
5f26a2c7 CW |
3731 | if (batch_obj->pending_write_domain) { |
3732 | DRM_ERROR("Attempting to use self-modifying batch buffer\n"); | |
3733 | ret = -EINVAL; | |
3734 | goto err; | |
3735 | } | |
3736 | batch_obj->pending_read_domains |= I915_GEM_DOMAIN_COMMAND; | |
673a394b | 3737 | |
83d60795 CW |
3738 | /* Sanity check the batch buffer, prior to moving objects */ |
3739 | exec_offset = exec_list[args->buffer_count - 1].offset; | |
3740 | ret = i915_gem_check_execbuffer (args, exec_offset); | |
3741 | if (ret != 0) { | |
3742 | DRM_ERROR("execbuf with invalid offset/length\n"); | |
3743 | goto err; | |
3744 | } | |
3745 | ||
673a394b EA |
3746 | i915_verify_inactive(dev, __FILE__, __LINE__); |
3747 | ||
646f0f6e KP |
3748 | /* Zero the global flush/invalidate flags. These |
3749 | * will be modified as new domains are computed | |
3750 | * for each object | |
3751 | */ | |
3752 | dev->invalidate_domains = 0; | |
3753 | dev->flush_domains = 0; | |
88f356b7 | 3754 | dev_priv->flush_rings = 0; |
646f0f6e | 3755 | |
673a394b EA |
3756 | for (i = 0; i < args->buffer_count; i++) { |
3757 | struct drm_gem_object *obj = object_list[i]; | |
673a394b | 3758 | |
646f0f6e | 3759 | /* Compute new gpu domains and update invalidate/flush */ |
8b0e378a | 3760 | i915_gem_object_set_to_gpu_domain(obj); |
673a394b EA |
3761 | } |
3762 | ||
3763 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
3764 | ||
646f0f6e KP |
3765 | if (dev->invalidate_domains | dev->flush_domains) { |
3766 | #if WATCH_EXEC | |
3767 | DRM_INFO("%s: invalidate_domains %08x flush_domains %08x\n", | |
3768 | __func__, | |
3769 | dev->invalidate_domains, | |
3770 | dev->flush_domains); | |
3771 | #endif | |
3772 | i915_gem_flush(dev, | |
3773 | dev->invalidate_domains, | |
3774 | dev->flush_domains); | |
88f356b7 | 3775 | if (dev_priv->flush_rings & FLUSH_RENDER_RING) |
b962442e | 3776 | (void)i915_add_request(dev, file_priv, |
88f356b7 CW |
3777 | dev->flush_domains, |
3778 | &dev_priv->render_ring); | |
3779 | if (dev_priv->flush_rings & FLUSH_BSD_RING) | |
3780 | (void)i915_add_request(dev, file_priv, | |
3781 | dev->flush_domains, | |
3782 | &dev_priv->bsd_ring); | |
646f0f6e | 3783 | } |
673a394b | 3784 | |
efbeed96 EA |
3785 | for (i = 0; i < args->buffer_count; i++) { |
3786 | struct drm_gem_object *obj = object_list[i]; | |
23010e43 | 3787 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
1c5d22f7 | 3788 | uint32_t old_write_domain = obj->write_domain; |
efbeed96 EA |
3789 | |
3790 | obj->write_domain = obj->pending_write_domain; | |
99fcb766 DV |
3791 | if (obj->write_domain) |
3792 | list_move_tail(&obj_priv->gpu_write_list, | |
3793 | &dev_priv->mm.gpu_write_list); | |
3794 | else | |
3795 | list_del_init(&obj_priv->gpu_write_list); | |
3796 | ||
1c5d22f7 CW |
3797 | trace_i915_gem_object_change_domain(obj, |
3798 | obj->read_domains, | |
3799 | old_write_domain); | |
efbeed96 EA |
3800 | } |
3801 | ||
673a394b EA |
3802 | i915_verify_inactive(dev, __FILE__, __LINE__); |
3803 | ||
3804 | #if WATCH_COHERENCY | |
3805 | for (i = 0; i < args->buffer_count; i++) { | |
3806 | i915_gem_object_check_coherency(object_list[i], | |
3807 | exec_list[i].handle); | |
3808 | } | |
3809 | #endif | |
3810 | ||
673a394b | 3811 | #if WATCH_EXEC |
6911a9b8 | 3812 | i915_gem_dump_object(batch_obj, |
673a394b EA |
3813 | args->batch_len, |
3814 | __func__, | |
3815 | ~0); | |
3816 | #endif | |
3817 | ||
673a394b | 3818 | /* Exec the batchbuffer */ |
852835f3 ZN |
3819 | ret = ring->dispatch_gem_execbuffer(dev, ring, args, |
3820 | cliprects, exec_offset); | |
673a394b EA |
3821 | if (ret) { |
3822 | DRM_ERROR("dispatch failed %d\n", ret); | |
3823 | goto err; | |
3824 | } | |
3825 | ||
3826 | /* | |
3827 | * Ensure that the commands in the batch buffer are | |
3828 | * finished before the interrupt fires | |
3829 | */ | |
852835f3 | 3830 | flush_domains = i915_retire_commands(dev, ring); |
673a394b EA |
3831 | |
3832 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
3833 | ||
3834 | /* | |
3835 | * Get a seqno representing the execution of the current buffer, | |
3836 | * which we can wait on. We would like to mitigate these interrupts, | |
3837 | * likely by only creating seqnos occasionally (so that we have | |
3838 | * *some* interrupts representing completion of buffers that we can | |
3839 | * wait on when trying to clear up gtt space). | |
3840 | */ | |
852835f3 | 3841 | seqno = i915_add_request(dev, file_priv, flush_domains, ring); |
673a394b | 3842 | BUG_ON(seqno == 0); |
673a394b EA |
3843 | for (i = 0; i < args->buffer_count; i++) { |
3844 | struct drm_gem_object *obj = object_list[i]; | |
852835f3 | 3845 | obj_priv = to_intel_bo(obj); |
673a394b | 3846 | |
852835f3 | 3847 | i915_gem_object_move_to_active(obj, seqno, ring); |
673a394b EA |
3848 | #if WATCH_LRU |
3849 | DRM_INFO("%s: move to exec list %p\n", __func__, obj); | |
3850 | #endif | |
3851 | } | |
3852 | #if WATCH_LRU | |
3853 | i915_dump_lru(dev, __func__); | |
3854 | #endif | |
3855 | ||
3856 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
3857 | ||
673a394b | 3858 | err: |
aad87dff JL |
3859 | for (i = 0; i < pinned; i++) |
3860 | i915_gem_object_unpin(object_list[i]); | |
3861 | ||
b70d11da KH |
3862 | for (i = 0; i < args->buffer_count; i++) { |
3863 | if (object_list[i]) { | |
23010e43 | 3864 | obj_priv = to_intel_bo(object_list[i]); |
b70d11da KH |
3865 | obj_priv->in_execbuffer = false; |
3866 | } | |
aad87dff | 3867 | drm_gem_object_unreference(object_list[i]); |
b70d11da | 3868 | } |
673a394b | 3869 | |
673a394b EA |
3870 | mutex_unlock(&dev->struct_mutex); |
3871 | ||
93533c29 | 3872 | pre_mutex_err: |
40a5f0de EA |
3873 | /* Copy the updated relocations out regardless of current error |
3874 | * state. Failure to update the relocs would mean that the next | |
3875 | * time userland calls execbuf, it would do so with presumed offset | |
3876 | * state that didn't match the actual object state. | |
3877 | */ | |
3878 | ret2 = i915_gem_put_relocs_to_user(exec_list, args->buffer_count, | |
3879 | relocs); | |
3880 | if (ret2 != 0) { | |
3881 | DRM_ERROR("Failed to copy relocations back out: %d\n", ret2); | |
3882 | ||
3883 | if (ret == 0) | |
3884 | ret = ret2; | |
3885 | } | |
3886 | ||
8e7d2b2c | 3887 | drm_free_large(object_list); |
9a298b2a | 3888 | kfree(cliprects); |
673a394b EA |
3889 | |
3890 | return ret; | |
3891 | } | |
3892 | ||
76446cac JB |
3893 | /* |
3894 | * Legacy execbuffer just creates an exec2 list from the original exec object | |
3895 | * list array and passes it to the real function. | |
3896 | */ | |
3897 | int | |
3898 | i915_gem_execbuffer(struct drm_device *dev, void *data, | |
3899 | struct drm_file *file_priv) | |
3900 | { | |
3901 | struct drm_i915_gem_execbuffer *args = data; | |
3902 | struct drm_i915_gem_execbuffer2 exec2; | |
3903 | struct drm_i915_gem_exec_object *exec_list = NULL; | |
3904 | struct drm_i915_gem_exec_object2 *exec2_list = NULL; | |
3905 | int ret, i; | |
3906 | ||
3907 | #if WATCH_EXEC | |
3908 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", | |
3909 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); | |
3910 | #endif | |
3911 | ||
3912 | if (args->buffer_count < 1) { | |
3913 | DRM_ERROR("execbuf with %d buffers\n", args->buffer_count); | |
3914 | return -EINVAL; | |
3915 | } | |
3916 | ||
3917 | /* Copy in the exec list from userland */ | |
3918 | exec_list = drm_malloc_ab(sizeof(*exec_list), args->buffer_count); | |
3919 | exec2_list = drm_malloc_ab(sizeof(*exec2_list), args->buffer_count); | |
3920 | if (exec_list == NULL || exec2_list == NULL) { | |
3921 | DRM_ERROR("Failed to allocate exec list for %d buffers\n", | |
3922 | args->buffer_count); | |
3923 | drm_free_large(exec_list); | |
3924 | drm_free_large(exec2_list); | |
3925 | return -ENOMEM; | |
3926 | } | |
3927 | ret = copy_from_user(exec_list, | |
3928 | (struct drm_i915_relocation_entry __user *) | |
3929 | (uintptr_t) args->buffers_ptr, | |
3930 | sizeof(*exec_list) * args->buffer_count); | |
3931 | if (ret != 0) { | |
3932 | DRM_ERROR("copy %d exec entries failed %d\n", | |
3933 | args->buffer_count, ret); | |
3934 | drm_free_large(exec_list); | |
3935 | drm_free_large(exec2_list); | |
3936 | return -EFAULT; | |
3937 | } | |
3938 | ||
3939 | for (i = 0; i < args->buffer_count; i++) { | |
3940 | exec2_list[i].handle = exec_list[i].handle; | |
3941 | exec2_list[i].relocation_count = exec_list[i].relocation_count; | |
3942 | exec2_list[i].relocs_ptr = exec_list[i].relocs_ptr; | |
3943 | exec2_list[i].alignment = exec_list[i].alignment; | |
3944 | exec2_list[i].offset = exec_list[i].offset; | |
3945 | if (!IS_I965G(dev)) | |
3946 | exec2_list[i].flags = EXEC_OBJECT_NEEDS_FENCE; | |
3947 | else | |
3948 | exec2_list[i].flags = 0; | |
3949 | } | |
3950 | ||
3951 | exec2.buffers_ptr = args->buffers_ptr; | |
3952 | exec2.buffer_count = args->buffer_count; | |
3953 | exec2.batch_start_offset = args->batch_start_offset; | |
3954 | exec2.batch_len = args->batch_len; | |
3955 | exec2.DR1 = args->DR1; | |
3956 | exec2.DR4 = args->DR4; | |
3957 | exec2.num_cliprects = args->num_cliprects; | |
3958 | exec2.cliprects_ptr = args->cliprects_ptr; | |
852835f3 | 3959 | exec2.flags = I915_EXEC_RENDER; |
76446cac JB |
3960 | |
3961 | ret = i915_gem_do_execbuffer(dev, data, file_priv, &exec2, exec2_list); | |
3962 | if (!ret) { | |
3963 | /* Copy the new buffer offsets back to the user's exec list. */ | |
3964 | for (i = 0; i < args->buffer_count; i++) | |
3965 | exec_list[i].offset = exec2_list[i].offset; | |
3966 | /* ... and back out to userspace */ | |
3967 | ret = copy_to_user((struct drm_i915_relocation_entry __user *) | |
3968 | (uintptr_t) args->buffers_ptr, | |
3969 | exec_list, | |
3970 | sizeof(*exec_list) * args->buffer_count); | |
3971 | if (ret) { | |
3972 | ret = -EFAULT; | |
3973 | DRM_ERROR("failed to copy %d exec entries " | |
3974 | "back to user (%d)\n", | |
3975 | args->buffer_count, ret); | |
3976 | } | |
76446cac JB |
3977 | } |
3978 | ||
3979 | drm_free_large(exec_list); | |
3980 | drm_free_large(exec2_list); | |
3981 | return ret; | |
3982 | } | |
3983 | ||
3984 | int | |
3985 | i915_gem_execbuffer2(struct drm_device *dev, void *data, | |
3986 | struct drm_file *file_priv) | |
3987 | { | |
3988 | struct drm_i915_gem_execbuffer2 *args = data; | |
3989 | struct drm_i915_gem_exec_object2 *exec2_list = NULL; | |
3990 | int ret; | |
3991 | ||
3992 | #if WATCH_EXEC | |
3993 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", | |
3994 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); | |
3995 | #endif | |
3996 | ||
3997 | if (args->buffer_count < 1) { | |
3998 | DRM_ERROR("execbuf2 with %d buffers\n", args->buffer_count); | |
3999 | return -EINVAL; | |
4000 | } | |
4001 | ||
4002 | exec2_list = drm_malloc_ab(sizeof(*exec2_list), args->buffer_count); | |
4003 | if (exec2_list == NULL) { | |
4004 | DRM_ERROR("Failed to allocate exec list for %d buffers\n", | |
4005 | args->buffer_count); | |
4006 | return -ENOMEM; | |
4007 | } | |
4008 | ret = copy_from_user(exec2_list, | |
4009 | (struct drm_i915_relocation_entry __user *) | |
4010 | (uintptr_t) args->buffers_ptr, | |
4011 | sizeof(*exec2_list) * args->buffer_count); | |
4012 | if (ret != 0) { | |
4013 | DRM_ERROR("copy %d exec entries failed %d\n", | |
4014 | args->buffer_count, ret); | |
4015 | drm_free_large(exec2_list); | |
4016 | return -EFAULT; | |
4017 | } | |
4018 | ||
4019 | ret = i915_gem_do_execbuffer(dev, data, file_priv, args, exec2_list); | |
4020 | if (!ret) { | |
4021 | /* Copy the new buffer offsets back to the user's exec list. */ | |
4022 | ret = copy_to_user((struct drm_i915_relocation_entry __user *) | |
4023 | (uintptr_t) args->buffers_ptr, | |
4024 | exec2_list, | |
4025 | sizeof(*exec2_list) * args->buffer_count); | |
4026 | if (ret) { | |
4027 | ret = -EFAULT; | |
4028 | DRM_ERROR("failed to copy %d exec entries " | |
4029 | "back to user (%d)\n", | |
4030 | args->buffer_count, ret); | |
4031 | } | |
4032 | } | |
4033 | ||
4034 | drm_free_large(exec2_list); | |
4035 | return ret; | |
4036 | } | |
4037 | ||
673a394b EA |
4038 | int |
4039 | i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment) | |
4040 | { | |
4041 | struct drm_device *dev = obj->dev; | |
23010e43 | 4042 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
4043 | int ret; |
4044 | ||
778c3544 DV |
4045 | BUG_ON(obj_priv->pin_count == DRM_I915_GEM_OBJECT_MAX_PIN_COUNT); |
4046 | ||
673a394b | 4047 | i915_verify_inactive(dev, __FILE__, __LINE__); |
ac0c6b5a CW |
4048 | |
4049 | if (obj_priv->gtt_space != NULL) { | |
4050 | if (alignment == 0) | |
4051 | alignment = i915_gem_get_gtt_alignment(obj); | |
4052 | if (obj_priv->gtt_offset & (alignment - 1)) { | |
ae7d49d8 CW |
4053 | WARN(obj_priv->pin_count, |
4054 | "bo is already pinned with incorrect alignment:" | |
4055 | " offset=%x, req.alignment=%x\n", | |
4056 | obj_priv->gtt_offset, alignment); | |
ac0c6b5a CW |
4057 | ret = i915_gem_object_unbind(obj); |
4058 | if (ret) | |
4059 | return ret; | |
4060 | } | |
4061 | } | |
4062 | ||
673a394b EA |
4063 | if (obj_priv->gtt_space == NULL) { |
4064 | ret = i915_gem_object_bind_to_gtt(obj, alignment); | |
9731129c | 4065 | if (ret) |
673a394b | 4066 | return ret; |
22c344e9 | 4067 | } |
76446cac | 4068 | |
673a394b EA |
4069 | obj_priv->pin_count++; |
4070 | ||
4071 | /* If the object is not active and not pending a flush, | |
4072 | * remove it from the inactive list | |
4073 | */ | |
4074 | if (obj_priv->pin_count == 1) { | |
4075 | atomic_inc(&dev->pin_count); | |
4076 | atomic_add(obj->size, &dev->pin_memory); | |
4077 | if (!obj_priv->active && | |
bf1a1092 | 4078 | (obj->write_domain & I915_GEM_GPU_DOMAINS) == 0) |
673a394b EA |
4079 | list_del_init(&obj_priv->list); |
4080 | } | |
4081 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
4082 | ||
4083 | return 0; | |
4084 | } | |
4085 | ||
4086 | void | |
4087 | i915_gem_object_unpin(struct drm_gem_object *obj) | |
4088 | { | |
4089 | struct drm_device *dev = obj->dev; | |
4090 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 4091 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
4092 | |
4093 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
4094 | obj_priv->pin_count--; | |
4095 | BUG_ON(obj_priv->pin_count < 0); | |
4096 | BUG_ON(obj_priv->gtt_space == NULL); | |
4097 | ||
4098 | /* If the object is no longer pinned, and is | |
4099 | * neither active nor being flushed, then stick it on | |
4100 | * the inactive list | |
4101 | */ | |
4102 | if (obj_priv->pin_count == 0) { | |
4103 | if (!obj_priv->active && | |
21d509e3 | 4104 | (obj->write_domain & I915_GEM_GPU_DOMAINS) == 0) |
673a394b EA |
4105 | list_move_tail(&obj_priv->list, |
4106 | &dev_priv->mm.inactive_list); | |
4107 | atomic_dec(&dev->pin_count); | |
4108 | atomic_sub(obj->size, &dev->pin_memory); | |
4109 | } | |
4110 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
4111 | } | |
4112 | ||
4113 | int | |
4114 | i915_gem_pin_ioctl(struct drm_device *dev, void *data, | |
4115 | struct drm_file *file_priv) | |
4116 | { | |
4117 | struct drm_i915_gem_pin *args = data; | |
4118 | struct drm_gem_object *obj; | |
4119 | struct drm_i915_gem_object *obj_priv; | |
4120 | int ret; | |
4121 | ||
4122 | mutex_lock(&dev->struct_mutex); | |
4123 | ||
4124 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
4125 | if (obj == NULL) { | |
4126 | DRM_ERROR("Bad handle in i915_gem_pin_ioctl(): %d\n", | |
4127 | args->handle); | |
4128 | mutex_unlock(&dev->struct_mutex); | |
bf79cb91 | 4129 | return -ENOENT; |
673a394b | 4130 | } |
23010e43 | 4131 | obj_priv = to_intel_bo(obj); |
673a394b | 4132 | |
bb6baf76 CW |
4133 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
4134 | DRM_ERROR("Attempting to pin a purgeable buffer\n"); | |
3ef94daa CW |
4135 | drm_gem_object_unreference(obj); |
4136 | mutex_unlock(&dev->struct_mutex); | |
4137 | return -EINVAL; | |
4138 | } | |
4139 | ||
79e53945 JB |
4140 | if (obj_priv->pin_filp != NULL && obj_priv->pin_filp != file_priv) { |
4141 | DRM_ERROR("Already pinned in i915_gem_pin_ioctl(): %d\n", | |
4142 | args->handle); | |
96dec61d | 4143 | drm_gem_object_unreference(obj); |
673a394b | 4144 | mutex_unlock(&dev->struct_mutex); |
79e53945 JB |
4145 | return -EINVAL; |
4146 | } | |
4147 | ||
4148 | obj_priv->user_pin_count++; | |
4149 | obj_priv->pin_filp = file_priv; | |
4150 | if (obj_priv->user_pin_count == 1) { | |
4151 | ret = i915_gem_object_pin(obj, args->alignment); | |
4152 | if (ret != 0) { | |
4153 | drm_gem_object_unreference(obj); | |
4154 | mutex_unlock(&dev->struct_mutex); | |
4155 | return ret; | |
4156 | } | |
673a394b EA |
4157 | } |
4158 | ||
4159 | /* XXX - flush the CPU caches for pinned objects | |
4160 | * as the X server doesn't manage domains yet | |
4161 | */ | |
e47c68e9 | 4162 | i915_gem_object_flush_cpu_write_domain(obj); |
673a394b EA |
4163 | args->offset = obj_priv->gtt_offset; |
4164 | drm_gem_object_unreference(obj); | |
4165 | mutex_unlock(&dev->struct_mutex); | |
4166 | ||
4167 | return 0; | |
4168 | } | |
4169 | ||
4170 | int | |
4171 | i915_gem_unpin_ioctl(struct drm_device *dev, void *data, | |
4172 | struct drm_file *file_priv) | |
4173 | { | |
4174 | struct drm_i915_gem_pin *args = data; | |
4175 | struct drm_gem_object *obj; | |
79e53945 | 4176 | struct drm_i915_gem_object *obj_priv; |
673a394b EA |
4177 | |
4178 | mutex_lock(&dev->struct_mutex); | |
4179 | ||
4180 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
4181 | if (obj == NULL) { | |
4182 | DRM_ERROR("Bad handle in i915_gem_unpin_ioctl(): %d\n", | |
4183 | args->handle); | |
4184 | mutex_unlock(&dev->struct_mutex); | |
bf79cb91 | 4185 | return -ENOENT; |
673a394b EA |
4186 | } |
4187 | ||
23010e43 | 4188 | obj_priv = to_intel_bo(obj); |
79e53945 JB |
4189 | if (obj_priv->pin_filp != file_priv) { |
4190 | DRM_ERROR("Not pinned by caller in i915_gem_pin_ioctl(): %d\n", | |
4191 | args->handle); | |
4192 | drm_gem_object_unreference(obj); | |
4193 | mutex_unlock(&dev->struct_mutex); | |
4194 | return -EINVAL; | |
4195 | } | |
4196 | obj_priv->user_pin_count--; | |
4197 | if (obj_priv->user_pin_count == 0) { | |
4198 | obj_priv->pin_filp = NULL; | |
4199 | i915_gem_object_unpin(obj); | |
4200 | } | |
673a394b EA |
4201 | |
4202 | drm_gem_object_unreference(obj); | |
4203 | mutex_unlock(&dev->struct_mutex); | |
4204 | return 0; | |
4205 | } | |
4206 | ||
4207 | int | |
4208 | i915_gem_busy_ioctl(struct drm_device *dev, void *data, | |
4209 | struct drm_file *file_priv) | |
4210 | { | |
4211 | struct drm_i915_gem_busy *args = data; | |
4212 | struct drm_gem_object *obj; | |
4213 | struct drm_i915_gem_object *obj_priv; | |
4214 | ||
673a394b EA |
4215 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
4216 | if (obj == NULL) { | |
4217 | DRM_ERROR("Bad handle in i915_gem_busy_ioctl(): %d\n", | |
4218 | args->handle); | |
bf79cb91 | 4219 | return -ENOENT; |
673a394b EA |
4220 | } |
4221 | ||
b1ce786c | 4222 | mutex_lock(&dev->struct_mutex); |
d1b851fc | 4223 | |
0be555b6 CW |
4224 | /* Count all active objects as busy, even if they are currently not used |
4225 | * by the gpu. Users of this interface expect objects to eventually | |
4226 | * become non-busy without any further actions, therefore emit any | |
4227 | * necessary flushes here. | |
c4de0a5d | 4228 | */ |
0be555b6 CW |
4229 | obj_priv = to_intel_bo(obj); |
4230 | args->busy = obj_priv->active; | |
4231 | if (args->busy) { | |
4232 | /* Unconditionally flush objects, even when the gpu still uses this | |
4233 | * object. Userspace calling this function indicates that it wants to | |
4234 | * use this buffer rather sooner than later, so issuing the required | |
4235 | * flush earlier is beneficial. | |
4236 | */ | |
4237 | if (obj->write_domain) { | |
4238 | i915_gem_flush(dev, 0, obj->write_domain); | |
4239 | (void)i915_add_request(dev, file_priv, obj->write_domain, obj_priv->ring); | |
4240 | } | |
4241 | ||
4242 | /* Update the active list for the hardware's current position. | |
4243 | * Otherwise this only updates on a delayed timer or when irqs | |
4244 | * are actually unmasked, and our working set ends up being | |
4245 | * larger than required. | |
4246 | */ | |
4247 | i915_gem_retire_requests_ring(dev, obj_priv->ring); | |
4248 | ||
4249 | args->busy = obj_priv->active; | |
4250 | } | |
673a394b EA |
4251 | |
4252 | drm_gem_object_unreference(obj); | |
4253 | mutex_unlock(&dev->struct_mutex); | |
4254 | return 0; | |
4255 | } | |
4256 | ||
4257 | int | |
4258 | i915_gem_throttle_ioctl(struct drm_device *dev, void *data, | |
4259 | struct drm_file *file_priv) | |
4260 | { | |
4261 | return i915_gem_ring_throttle(dev, file_priv); | |
4262 | } | |
4263 | ||
3ef94daa CW |
4264 | int |
4265 | i915_gem_madvise_ioctl(struct drm_device *dev, void *data, | |
4266 | struct drm_file *file_priv) | |
4267 | { | |
4268 | struct drm_i915_gem_madvise *args = data; | |
4269 | struct drm_gem_object *obj; | |
4270 | struct drm_i915_gem_object *obj_priv; | |
4271 | ||
4272 | switch (args->madv) { | |
4273 | case I915_MADV_DONTNEED: | |
4274 | case I915_MADV_WILLNEED: | |
4275 | break; | |
4276 | default: | |
4277 | return -EINVAL; | |
4278 | } | |
4279 | ||
4280 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
4281 | if (obj == NULL) { | |
4282 | DRM_ERROR("Bad handle in i915_gem_madvise_ioctl(): %d\n", | |
4283 | args->handle); | |
bf79cb91 | 4284 | return -ENOENT; |
3ef94daa CW |
4285 | } |
4286 | ||
4287 | mutex_lock(&dev->struct_mutex); | |
23010e43 | 4288 | obj_priv = to_intel_bo(obj); |
3ef94daa CW |
4289 | |
4290 | if (obj_priv->pin_count) { | |
4291 | drm_gem_object_unreference(obj); | |
4292 | mutex_unlock(&dev->struct_mutex); | |
4293 | ||
4294 | DRM_ERROR("Attempted i915_gem_madvise_ioctl() on a pinned object\n"); | |
4295 | return -EINVAL; | |
4296 | } | |
4297 | ||
bb6baf76 CW |
4298 | if (obj_priv->madv != __I915_MADV_PURGED) |
4299 | obj_priv->madv = args->madv; | |
3ef94daa | 4300 | |
2d7ef395 CW |
4301 | /* if the object is no longer bound, discard its backing storage */ |
4302 | if (i915_gem_object_is_purgeable(obj_priv) && | |
4303 | obj_priv->gtt_space == NULL) | |
4304 | i915_gem_object_truncate(obj); | |
4305 | ||
bb6baf76 CW |
4306 | args->retained = obj_priv->madv != __I915_MADV_PURGED; |
4307 | ||
3ef94daa CW |
4308 | drm_gem_object_unreference(obj); |
4309 | mutex_unlock(&dev->struct_mutex); | |
4310 | ||
4311 | return 0; | |
4312 | } | |
4313 | ||
ac52bc56 DV |
4314 | struct drm_gem_object * i915_gem_alloc_object(struct drm_device *dev, |
4315 | size_t size) | |
4316 | { | |
c397b908 | 4317 | struct drm_i915_gem_object *obj; |
ac52bc56 | 4318 | |
c397b908 DV |
4319 | obj = kzalloc(sizeof(*obj), GFP_KERNEL); |
4320 | if (obj == NULL) | |
4321 | return NULL; | |
673a394b | 4322 | |
c397b908 DV |
4323 | if (drm_gem_object_init(dev, &obj->base, size) != 0) { |
4324 | kfree(obj); | |
4325 | return NULL; | |
4326 | } | |
673a394b | 4327 | |
c397b908 DV |
4328 | obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
4329 | obj->base.read_domains = I915_GEM_DOMAIN_CPU; | |
673a394b | 4330 | |
c397b908 | 4331 | obj->agp_type = AGP_USER_MEMORY; |
62b8b215 | 4332 | obj->base.driver_private = NULL; |
c397b908 DV |
4333 | obj->fence_reg = I915_FENCE_REG_NONE; |
4334 | INIT_LIST_HEAD(&obj->list); | |
4335 | INIT_LIST_HEAD(&obj->gpu_write_list); | |
c397b908 | 4336 | obj->madv = I915_MADV_WILLNEED; |
de151cf6 | 4337 | |
c397b908 DV |
4338 | trace_i915_gem_object_create(&obj->base); |
4339 | ||
4340 | return &obj->base; | |
4341 | } | |
4342 | ||
4343 | int i915_gem_init_object(struct drm_gem_object *obj) | |
4344 | { | |
4345 | BUG(); | |
de151cf6 | 4346 | |
673a394b EA |
4347 | return 0; |
4348 | } | |
4349 | ||
be72615b | 4350 | static void i915_gem_free_object_tail(struct drm_gem_object *obj) |
673a394b | 4351 | { |
de151cf6 | 4352 | struct drm_device *dev = obj->dev; |
be72615b | 4353 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 4354 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
be72615b | 4355 | int ret; |
673a394b | 4356 | |
be72615b CW |
4357 | ret = i915_gem_object_unbind(obj); |
4358 | if (ret == -ERESTARTSYS) { | |
4359 | list_move(&obj_priv->list, | |
4360 | &dev_priv->mm.deferred_free_list); | |
4361 | return; | |
4362 | } | |
673a394b | 4363 | |
7e616158 CW |
4364 | if (obj_priv->mmap_offset) |
4365 | i915_gem_free_mmap_offset(obj); | |
de151cf6 | 4366 | |
c397b908 DV |
4367 | drm_gem_object_release(obj); |
4368 | ||
9a298b2a | 4369 | kfree(obj_priv->page_cpu_valid); |
280b713b | 4370 | kfree(obj_priv->bit_17); |
c397b908 | 4371 | kfree(obj_priv); |
673a394b EA |
4372 | } |
4373 | ||
be72615b CW |
4374 | void i915_gem_free_object(struct drm_gem_object *obj) |
4375 | { | |
4376 | struct drm_device *dev = obj->dev; | |
4377 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); | |
4378 | ||
4379 | trace_i915_gem_object_destroy(obj); | |
4380 | ||
4381 | while (obj_priv->pin_count > 0) | |
4382 | i915_gem_object_unpin(obj); | |
4383 | ||
4384 | if (obj_priv->phys_obj) | |
4385 | i915_gem_detach_phys_object(dev, obj); | |
4386 | ||
4387 | i915_gem_free_object_tail(obj); | |
4388 | } | |
4389 | ||
29105ccc CW |
4390 | int |
4391 | i915_gem_idle(struct drm_device *dev) | |
4392 | { | |
4393 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4394 | int ret; | |
28dfe52a | 4395 | |
29105ccc | 4396 | mutex_lock(&dev->struct_mutex); |
1c5d22f7 | 4397 | |
8187a2b7 | 4398 | if (dev_priv->mm.suspended || |
d1b851fc ZN |
4399 | (dev_priv->render_ring.gem_object == NULL) || |
4400 | (HAS_BSD(dev) && | |
4401 | dev_priv->bsd_ring.gem_object == NULL)) { | |
29105ccc CW |
4402 | mutex_unlock(&dev->struct_mutex); |
4403 | return 0; | |
28dfe52a EA |
4404 | } |
4405 | ||
29105ccc | 4406 | ret = i915_gpu_idle(dev); |
6dbe2772 KP |
4407 | if (ret) { |
4408 | mutex_unlock(&dev->struct_mutex); | |
673a394b | 4409 | return ret; |
6dbe2772 | 4410 | } |
673a394b | 4411 | |
29105ccc CW |
4412 | /* Under UMS, be paranoid and evict. */ |
4413 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) { | |
b47eb4a2 | 4414 | ret = i915_gem_evict_inactive(dev); |
29105ccc CW |
4415 | if (ret) { |
4416 | mutex_unlock(&dev->struct_mutex); | |
4417 | return ret; | |
4418 | } | |
4419 | } | |
4420 | ||
4421 | /* Hack! Don't let anybody do execbuf while we don't control the chip. | |
4422 | * We need to replace this with a semaphore, or something. | |
4423 | * And not confound mm.suspended! | |
4424 | */ | |
4425 | dev_priv->mm.suspended = 1; | |
4426 | del_timer(&dev_priv->hangcheck_timer); | |
4427 | ||
4428 | i915_kernel_lost_context(dev); | |
6dbe2772 | 4429 | i915_gem_cleanup_ringbuffer(dev); |
29105ccc | 4430 | |
6dbe2772 KP |
4431 | mutex_unlock(&dev->struct_mutex); |
4432 | ||
29105ccc CW |
4433 | /* Cancel the retire work handler, which should be idle now. */ |
4434 | cancel_delayed_work_sync(&dev_priv->mm.retire_work); | |
4435 | ||
673a394b EA |
4436 | return 0; |
4437 | } | |
4438 | ||
e552eb70 JB |
4439 | /* |
4440 | * 965+ support PIPE_CONTROL commands, which provide finer grained control | |
4441 | * over cache flushing. | |
4442 | */ | |
8187a2b7 | 4443 | static int |
e552eb70 JB |
4444 | i915_gem_init_pipe_control(struct drm_device *dev) |
4445 | { | |
4446 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4447 | struct drm_gem_object *obj; | |
4448 | struct drm_i915_gem_object *obj_priv; | |
4449 | int ret; | |
4450 | ||
34dc4d44 | 4451 | obj = i915_gem_alloc_object(dev, 4096); |
e552eb70 JB |
4452 | if (obj == NULL) { |
4453 | DRM_ERROR("Failed to allocate seqno page\n"); | |
4454 | ret = -ENOMEM; | |
4455 | goto err; | |
4456 | } | |
4457 | obj_priv = to_intel_bo(obj); | |
4458 | obj_priv->agp_type = AGP_USER_CACHED_MEMORY; | |
4459 | ||
4460 | ret = i915_gem_object_pin(obj, 4096); | |
4461 | if (ret) | |
4462 | goto err_unref; | |
4463 | ||
4464 | dev_priv->seqno_gfx_addr = obj_priv->gtt_offset; | |
4465 | dev_priv->seqno_page = kmap(obj_priv->pages[0]); | |
4466 | if (dev_priv->seqno_page == NULL) | |
4467 | goto err_unpin; | |
4468 | ||
4469 | dev_priv->seqno_obj = obj; | |
4470 | memset(dev_priv->seqno_page, 0, PAGE_SIZE); | |
4471 | ||
4472 | return 0; | |
4473 | ||
4474 | err_unpin: | |
4475 | i915_gem_object_unpin(obj); | |
4476 | err_unref: | |
4477 | drm_gem_object_unreference(obj); | |
4478 | err: | |
4479 | return ret; | |
4480 | } | |
4481 | ||
8187a2b7 ZN |
4482 | |
4483 | static void | |
e552eb70 JB |
4484 | i915_gem_cleanup_pipe_control(struct drm_device *dev) |
4485 | { | |
4486 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4487 | struct drm_gem_object *obj; | |
4488 | struct drm_i915_gem_object *obj_priv; | |
4489 | ||
4490 | obj = dev_priv->seqno_obj; | |
4491 | obj_priv = to_intel_bo(obj); | |
4492 | kunmap(obj_priv->pages[0]); | |
4493 | i915_gem_object_unpin(obj); | |
4494 | drm_gem_object_unreference(obj); | |
4495 | dev_priv->seqno_obj = NULL; | |
4496 | ||
4497 | dev_priv->seqno_page = NULL; | |
673a394b EA |
4498 | } |
4499 | ||
8187a2b7 ZN |
4500 | int |
4501 | i915_gem_init_ringbuffer(struct drm_device *dev) | |
4502 | { | |
4503 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4504 | int ret; | |
68f95ba9 | 4505 | |
8187a2b7 | 4506 | dev_priv->render_ring = render_ring; |
68f95ba9 | 4507 | |
8187a2b7 ZN |
4508 | if (!I915_NEED_GFX_HWS(dev)) { |
4509 | dev_priv->render_ring.status_page.page_addr | |
4510 | = dev_priv->status_page_dmah->vaddr; | |
4511 | memset(dev_priv->render_ring.status_page.page_addr, | |
4512 | 0, PAGE_SIZE); | |
4513 | } | |
68f95ba9 | 4514 | |
8187a2b7 ZN |
4515 | if (HAS_PIPE_CONTROL(dev)) { |
4516 | ret = i915_gem_init_pipe_control(dev); | |
4517 | if (ret) | |
4518 | return ret; | |
4519 | } | |
68f95ba9 | 4520 | |
8187a2b7 | 4521 | ret = intel_init_ring_buffer(dev, &dev_priv->render_ring); |
68f95ba9 CW |
4522 | if (ret) |
4523 | goto cleanup_pipe_control; | |
4524 | ||
4525 | if (HAS_BSD(dev)) { | |
d1b851fc ZN |
4526 | dev_priv->bsd_ring = bsd_ring; |
4527 | ret = intel_init_ring_buffer(dev, &dev_priv->bsd_ring); | |
68f95ba9 CW |
4528 | if (ret) |
4529 | goto cleanup_render_ring; | |
d1b851fc | 4530 | } |
68f95ba9 | 4531 | |
6f392d54 CW |
4532 | dev_priv->next_seqno = 1; |
4533 | ||
68f95ba9 CW |
4534 | return 0; |
4535 | ||
4536 | cleanup_render_ring: | |
4537 | intel_cleanup_ring_buffer(dev, &dev_priv->render_ring); | |
4538 | cleanup_pipe_control: | |
4539 | if (HAS_PIPE_CONTROL(dev)) | |
4540 | i915_gem_cleanup_pipe_control(dev); | |
8187a2b7 ZN |
4541 | return ret; |
4542 | } | |
4543 | ||
4544 | void | |
4545 | i915_gem_cleanup_ringbuffer(struct drm_device *dev) | |
4546 | { | |
4547 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4548 | ||
4549 | intel_cleanup_ring_buffer(dev, &dev_priv->render_ring); | |
d1b851fc ZN |
4550 | if (HAS_BSD(dev)) |
4551 | intel_cleanup_ring_buffer(dev, &dev_priv->bsd_ring); | |
8187a2b7 ZN |
4552 | if (HAS_PIPE_CONTROL(dev)) |
4553 | i915_gem_cleanup_pipe_control(dev); | |
4554 | } | |
4555 | ||
673a394b EA |
4556 | int |
4557 | i915_gem_entervt_ioctl(struct drm_device *dev, void *data, | |
4558 | struct drm_file *file_priv) | |
4559 | { | |
4560 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4561 | int ret; | |
4562 | ||
79e53945 JB |
4563 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
4564 | return 0; | |
4565 | ||
ba1234d1 | 4566 | if (atomic_read(&dev_priv->mm.wedged)) { |
673a394b | 4567 | DRM_ERROR("Reenabling wedged hardware, good luck\n"); |
ba1234d1 | 4568 | atomic_set(&dev_priv->mm.wedged, 0); |
673a394b EA |
4569 | } |
4570 | ||
673a394b | 4571 | mutex_lock(&dev->struct_mutex); |
9bb2d6f9 EA |
4572 | dev_priv->mm.suspended = 0; |
4573 | ||
4574 | ret = i915_gem_init_ringbuffer(dev); | |
d816f6ac WF |
4575 | if (ret != 0) { |
4576 | mutex_unlock(&dev->struct_mutex); | |
9bb2d6f9 | 4577 | return ret; |
d816f6ac | 4578 | } |
9bb2d6f9 | 4579 | |
5e118f41 | 4580 | spin_lock(&dev_priv->mm.active_list_lock); |
852835f3 | 4581 | BUG_ON(!list_empty(&dev_priv->render_ring.active_list)); |
d1b851fc | 4582 | BUG_ON(HAS_BSD(dev) && !list_empty(&dev_priv->bsd_ring.active_list)); |
5e118f41 CW |
4583 | spin_unlock(&dev_priv->mm.active_list_lock); |
4584 | ||
673a394b EA |
4585 | BUG_ON(!list_empty(&dev_priv->mm.flushing_list)); |
4586 | BUG_ON(!list_empty(&dev_priv->mm.inactive_list)); | |
852835f3 | 4587 | BUG_ON(!list_empty(&dev_priv->render_ring.request_list)); |
d1b851fc | 4588 | BUG_ON(HAS_BSD(dev) && !list_empty(&dev_priv->bsd_ring.request_list)); |
673a394b | 4589 | mutex_unlock(&dev->struct_mutex); |
dbb19d30 | 4590 | |
5f35308b CW |
4591 | ret = drm_irq_install(dev); |
4592 | if (ret) | |
4593 | goto cleanup_ringbuffer; | |
dbb19d30 | 4594 | |
673a394b | 4595 | return 0; |
5f35308b CW |
4596 | |
4597 | cleanup_ringbuffer: | |
4598 | mutex_lock(&dev->struct_mutex); | |
4599 | i915_gem_cleanup_ringbuffer(dev); | |
4600 | dev_priv->mm.suspended = 1; | |
4601 | mutex_unlock(&dev->struct_mutex); | |
4602 | ||
4603 | return ret; | |
673a394b EA |
4604 | } |
4605 | ||
4606 | int | |
4607 | i915_gem_leavevt_ioctl(struct drm_device *dev, void *data, | |
4608 | struct drm_file *file_priv) | |
4609 | { | |
79e53945 JB |
4610 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
4611 | return 0; | |
4612 | ||
dbb19d30 | 4613 | drm_irq_uninstall(dev); |
e6890f6f | 4614 | return i915_gem_idle(dev); |
673a394b EA |
4615 | } |
4616 | ||
4617 | void | |
4618 | i915_gem_lastclose(struct drm_device *dev) | |
4619 | { | |
4620 | int ret; | |
673a394b | 4621 | |
e806b495 EA |
4622 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
4623 | return; | |
4624 | ||
6dbe2772 KP |
4625 | ret = i915_gem_idle(dev); |
4626 | if (ret) | |
4627 | DRM_ERROR("failed to idle hardware: %d\n", ret); | |
673a394b EA |
4628 | } |
4629 | ||
4630 | void | |
4631 | i915_gem_load(struct drm_device *dev) | |
4632 | { | |
b5aa8a0f | 4633 | int i; |
673a394b EA |
4634 | drm_i915_private_t *dev_priv = dev->dev_private; |
4635 | ||
5e118f41 | 4636 | spin_lock_init(&dev_priv->mm.active_list_lock); |
673a394b | 4637 | INIT_LIST_HEAD(&dev_priv->mm.flushing_list); |
99fcb766 | 4638 | INIT_LIST_HEAD(&dev_priv->mm.gpu_write_list); |
673a394b | 4639 | INIT_LIST_HEAD(&dev_priv->mm.inactive_list); |
a09ba7fa | 4640 | INIT_LIST_HEAD(&dev_priv->mm.fence_list); |
be72615b | 4641 | INIT_LIST_HEAD(&dev_priv->mm.deferred_free_list); |
852835f3 ZN |
4642 | INIT_LIST_HEAD(&dev_priv->render_ring.active_list); |
4643 | INIT_LIST_HEAD(&dev_priv->render_ring.request_list); | |
d1b851fc ZN |
4644 | if (HAS_BSD(dev)) { |
4645 | INIT_LIST_HEAD(&dev_priv->bsd_ring.active_list); | |
4646 | INIT_LIST_HEAD(&dev_priv->bsd_ring.request_list); | |
4647 | } | |
007cc8ac DV |
4648 | for (i = 0; i < 16; i++) |
4649 | INIT_LIST_HEAD(&dev_priv->fence_regs[i].lru_list); | |
673a394b EA |
4650 | INIT_DELAYED_WORK(&dev_priv->mm.retire_work, |
4651 | i915_gem_retire_work_handler); | |
31169714 CW |
4652 | spin_lock(&shrink_list_lock); |
4653 | list_add(&dev_priv->mm.shrink_list, &shrink_list); | |
4654 | spin_unlock(&shrink_list_lock); | |
4655 | ||
94400120 DA |
4656 | /* On GEN3 we really need to make sure the ARB C3 LP bit is set */ |
4657 | if (IS_GEN3(dev)) { | |
4658 | u32 tmp = I915_READ(MI_ARB_STATE); | |
4659 | if (!(tmp & MI_ARB_C3_LP_WRITE_ENABLE)) { | |
4660 | /* arb state is a masked write, so set bit + bit in mask */ | |
4661 | tmp = MI_ARB_C3_LP_WRITE_ENABLE | (MI_ARB_C3_LP_WRITE_ENABLE << MI_ARB_MASK_SHIFT); | |
4662 | I915_WRITE(MI_ARB_STATE, tmp); | |
4663 | } | |
4664 | } | |
4665 | ||
de151cf6 | 4666 | /* Old X drivers will take 0-2 for front, back, depth buffers */ |
b397c836 EA |
4667 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
4668 | dev_priv->fence_reg_start = 3; | |
de151cf6 | 4669 | |
0f973f27 | 4670 | if (IS_I965G(dev) || IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) |
de151cf6 JB |
4671 | dev_priv->num_fence_regs = 16; |
4672 | else | |
4673 | dev_priv->num_fence_regs = 8; | |
4674 | ||
b5aa8a0f GH |
4675 | /* Initialize fence registers to zero */ |
4676 | if (IS_I965G(dev)) { | |
4677 | for (i = 0; i < 16; i++) | |
4678 | I915_WRITE64(FENCE_REG_965_0 + (i * 8), 0); | |
4679 | } else { | |
4680 | for (i = 0; i < 8; i++) | |
4681 | I915_WRITE(FENCE_REG_830_0 + (i * 4), 0); | |
4682 | if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) | |
4683 | for (i = 0; i < 8; i++) | |
4684 | I915_WRITE(FENCE_REG_945_8 + (i * 4), 0); | |
4685 | } | |
673a394b | 4686 | i915_gem_detect_bit_6_swizzle(dev); |
6b95a207 | 4687 | init_waitqueue_head(&dev_priv->pending_flip_queue); |
673a394b | 4688 | } |
71acb5eb DA |
4689 | |
4690 | /* | |
4691 | * Create a physically contiguous memory object for this object | |
4692 | * e.g. for cursor + overlay regs | |
4693 | */ | |
4694 | int i915_gem_init_phys_object(struct drm_device *dev, | |
6eeefaf3 | 4695 | int id, int size, int align) |
71acb5eb DA |
4696 | { |
4697 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4698 | struct drm_i915_gem_phys_object *phys_obj; | |
4699 | int ret; | |
4700 | ||
4701 | if (dev_priv->mm.phys_objs[id - 1] || !size) | |
4702 | return 0; | |
4703 | ||
9a298b2a | 4704 | phys_obj = kzalloc(sizeof(struct drm_i915_gem_phys_object), GFP_KERNEL); |
71acb5eb DA |
4705 | if (!phys_obj) |
4706 | return -ENOMEM; | |
4707 | ||
4708 | phys_obj->id = id; | |
4709 | ||
6eeefaf3 | 4710 | phys_obj->handle = drm_pci_alloc(dev, size, align); |
71acb5eb DA |
4711 | if (!phys_obj->handle) { |
4712 | ret = -ENOMEM; | |
4713 | goto kfree_obj; | |
4714 | } | |
4715 | #ifdef CONFIG_X86 | |
4716 | set_memory_wc((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); | |
4717 | #endif | |
4718 | ||
4719 | dev_priv->mm.phys_objs[id - 1] = phys_obj; | |
4720 | ||
4721 | return 0; | |
4722 | kfree_obj: | |
9a298b2a | 4723 | kfree(phys_obj); |
71acb5eb DA |
4724 | return ret; |
4725 | } | |
4726 | ||
4727 | void i915_gem_free_phys_object(struct drm_device *dev, int id) | |
4728 | { | |
4729 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4730 | struct drm_i915_gem_phys_object *phys_obj; | |
4731 | ||
4732 | if (!dev_priv->mm.phys_objs[id - 1]) | |
4733 | return; | |
4734 | ||
4735 | phys_obj = dev_priv->mm.phys_objs[id - 1]; | |
4736 | if (phys_obj->cur_obj) { | |
4737 | i915_gem_detach_phys_object(dev, phys_obj->cur_obj); | |
4738 | } | |
4739 | ||
4740 | #ifdef CONFIG_X86 | |
4741 | set_memory_wb((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); | |
4742 | #endif | |
4743 | drm_pci_free(dev, phys_obj->handle); | |
4744 | kfree(phys_obj); | |
4745 | dev_priv->mm.phys_objs[id - 1] = NULL; | |
4746 | } | |
4747 | ||
4748 | void i915_gem_free_all_phys_object(struct drm_device *dev) | |
4749 | { | |
4750 | int i; | |
4751 | ||
260883c8 | 4752 | for (i = I915_GEM_PHYS_CURSOR_0; i <= I915_MAX_PHYS_OBJECT; i++) |
71acb5eb DA |
4753 | i915_gem_free_phys_object(dev, i); |
4754 | } | |
4755 | ||
4756 | void i915_gem_detach_phys_object(struct drm_device *dev, | |
4757 | struct drm_gem_object *obj) | |
4758 | { | |
4759 | struct drm_i915_gem_object *obj_priv; | |
4760 | int i; | |
4761 | int ret; | |
4762 | int page_count; | |
4763 | ||
23010e43 | 4764 | obj_priv = to_intel_bo(obj); |
71acb5eb DA |
4765 | if (!obj_priv->phys_obj) |
4766 | return; | |
4767 | ||
4bdadb97 | 4768 | ret = i915_gem_object_get_pages(obj, 0); |
71acb5eb DA |
4769 | if (ret) |
4770 | goto out; | |
4771 | ||
4772 | page_count = obj->size / PAGE_SIZE; | |
4773 | ||
4774 | for (i = 0; i < page_count; i++) { | |
856fa198 | 4775 | char *dst = kmap_atomic(obj_priv->pages[i], KM_USER0); |
71acb5eb DA |
4776 | char *src = obj_priv->phys_obj->handle->vaddr + (i * PAGE_SIZE); |
4777 | ||
4778 | memcpy(dst, src, PAGE_SIZE); | |
4779 | kunmap_atomic(dst, KM_USER0); | |
4780 | } | |
856fa198 | 4781 | drm_clflush_pages(obj_priv->pages, page_count); |
71acb5eb | 4782 | drm_agp_chipset_flush(dev); |
d78b47b9 CW |
4783 | |
4784 | i915_gem_object_put_pages(obj); | |
71acb5eb DA |
4785 | out: |
4786 | obj_priv->phys_obj->cur_obj = NULL; | |
4787 | obj_priv->phys_obj = NULL; | |
4788 | } | |
4789 | ||
4790 | int | |
4791 | i915_gem_attach_phys_object(struct drm_device *dev, | |
6eeefaf3 CW |
4792 | struct drm_gem_object *obj, |
4793 | int id, | |
4794 | int align) | |
71acb5eb DA |
4795 | { |
4796 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4797 | struct drm_i915_gem_object *obj_priv; | |
4798 | int ret = 0; | |
4799 | int page_count; | |
4800 | int i; | |
4801 | ||
4802 | if (id > I915_MAX_PHYS_OBJECT) | |
4803 | return -EINVAL; | |
4804 | ||
23010e43 | 4805 | obj_priv = to_intel_bo(obj); |
71acb5eb DA |
4806 | |
4807 | if (obj_priv->phys_obj) { | |
4808 | if (obj_priv->phys_obj->id == id) | |
4809 | return 0; | |
4810 | i915_gem_detach_phys_object(dev, obj); | |
4811 | } | |
4812 | ||
71acb5eb DA |
4813 | /* create a new object */ |
4814 | if (!dev_priv->mm.phys_objs[id - 1]) { | |
4815 | ret = i915_gem_init_phys_object(dev, id, | |
6eeefaf3 | 4816 | obj->size, align); |
71acb5eb | 4817 | if (ret) { |
aeb565df | 4818 | DRM_ERROR("failed to init phys object %d size: %zu\n", id, obj->size); |
71acb5eb DA |
4819 | goto out; |
4820 | } | |
4821 | } | |
4822 | ||
4823 | /* bind to the object */ | |
4824 | obj_priv->phys_obj = dev_priv->mm.phys_objs[id - 1]; | |
4825 | obj_priv->phys_obj->cur_obj = obj; | |
4826 | ||
4bdadb97 | 4827 | ret = i915_gem_object_get_pages(obj, 0); |
71acb5eb DA |
4828 | if (ret) { |
4829 | DRM_ERROR("failed to get page list\n"); | |
4830 | goto out; | |
4831 | } | |
4832 | ||
4833 | page_count = obj->size / PAGE_SIZE; | |
4834 | ||
4835 | for (i = 0; i < page_count; i++) { | |
856fa198 | 4836 | char *src = kmap_atomic(obj_priv->pages[i], KM_USER0); |
71acb5eb DA |
4837 | char *dst = obj_priv->phys_obj->handle->vaddr + (i * PAGE_SIZE); |
4838 | ||
4839 | memcpy(dst, src, PAGE_SIZE); | |
4840 | kunmap_atomic(src, KM_USER0); | |
4841 | } | |
4842 | ||
d78b47b9 CW |
4843 | i915_gem_object_put_pages(obj); |
4844 | ||
71acb5eb DA |
4845 | return 0; |
4846 | out: | |
4847 | return ret; | |
4848 | } | |
4849 | ||
4850 | static int | |
4851 | i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj, | |
4852 | struct drm_i915_gem_pwrite *args, | |
4853 | struct drm_file *file_priv) | |
4854 | { | |
23010e43 | 4855 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
71acb5eb DA |
4856 | void *obj_addr; |
4857 | int ret; | |
4858 | char __user *user_data; | |
4859 | ||
4860 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
4861 | obj_addr = obj_priv->phys_obj->handle->vaddr + args->offset; | |
4862 | ||
44d98a61 | 4863 | DRM_DEBUG_DRIVER("obj_addr %p, %lld\n", obj_addr, args->size); |
71acb5eb DA |
4864 | ret = copy_from_user(obj_addr, user_data, args->size); |
4865 | if (ret) | |
4866 | return -EFAULT; | |
4867 | ||
4868 | drm_agp_chipset_flush(dev); | |
4869 | return 0; | |
4870 | } | |
b962442e EA |
4871 | |
4872 | void i915_gem_release(struct drm_device * dev, struct drm_file *file_priv) | |
4873 | { | |
4874 | struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; | |
4875 | ||
4876 | /* Clean up our request list when the client is going away, so that | |
4877 | * later retire_requests won't dereference our soon-to-be-gone | |
4878 | * file_priv. | |
4879 | */ | |
4880 | mutex_lock(&dev->struct_mutex); | |
4881 | while (!list_empty(&i915_file_priv->mm.request_list)) | |
4882 | list_del_init(i915_file_priv->mm.request_list.next); | |
4883 | mutex_unlock(&dev->struct_mutex); | |
4884 | } | |
31169714 | 4885 | |
1637ef41 CW |
4886 | static int |
4887 | i915_gpu_is_active(struct drm_device *dev) | |
4888 | { | |
4889 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4890 | int lists_empty; | |
4891 | ||
4892 | spin_lock(&dev_priv->mm.active_list_lock); | |
4893 | lists_empty = list_empty(&dev_priv->mm.flushing_list) && | |
852835f3 | 4894 | list_empty(&dev_priv->render_ring.active_list); |
d1b851fc ZN |
4895 | if (HAS_BSD(dev)) |
4896 | lists_empty &= list_empty(&dev_priv->bsd_ring.active_list); | |
1637ef41 CW |
4897 | spin_unlock(&dev_priv->mm.active_list_lock); |
4898 | ||
4899 | return !lists_empty; | |
4900 | } | |
4901 | ||
31169714 | 4902 | static int |
7f8275d0 | 4903 | i915_gem_shrink(struct shrinker *shrink, int nr_to_scan, gfp_t gfp_mask) |
31169714 CW |
4904 | { |
4905 | drm_i915_private_t *dev_priv, *next_dev; | |
4906 | struct drm_i915_gem_object *obj_priv, *next_obj; | |
4907 | int cnt = 0; | |
4908 | int would_deadlock = 1; | |
4909 | ||
4910 | /* "fast-path" to count number of available objects */ | |
4911 | if (nr_to_scan == 0) { | |
4912 | spin_lock(&shrink_list_lock); | |
4913 | list_for_each_entry(dev_priv, &shrink_list, mm.shrink_list) { | |
4914 | struct drm_device *dev = dev_priv->dev; | |
4915 | ||
4916 | if (mutex_trylock(&dev->struct_mutex)) { | |
4917 | list_for_each_entry(obj_priv, | |
4918 | &dev_priv->mm.inactive_list, | |
4919 | list) | |
4920 | cnt++; | |
4921 | mutex_unlock(&dev->struct_mutex); | |
4922 | } | |
4923 | } | |
4924 | spin_unlock(&shrink_list_lock); | |
4925 | ||
4926 | return (cnt / 100) * sysctl_vfs_cache_pressure; | |
4927 | } | |
4928 | ||
4929 | spin_lock(&shrink_list_lock); | |
4930 | ||
1637ef41 | 4931 | rescan: |
31169714 CW |
4932 | /* first scan for clean buffers */ |
4933 | list_for_each_entry_safe(dev_priv, next_dev, | |
4934 | &shrink_list, mm.shrink_list) { | |
4935 | struct drm_device *dev = dev_priv->dev; | |
4936 | ||
4937 | if (! mutex_trylock(&dev->struct_mutex)) | |
4938 | continue; | |
4939 | ||
4940 | spin_unlock(&shrink_list_lock); | |
b09a1fec | 4941 | i915_gem_retire_requests(dev); |
31169714 CW |
4942 | |
4943 | list_for_each_entry_safe(obj_priv, next_obj, | |
4944 | &dev_priv->mm.inactive_list, | |
4945 | list) { | |
4946 | if (i915_gem_object_is_purgeable(obj_priv)) { | |
a8089e84 | 4947 | i915_gem_object_unbind(&obj_priv->base); |
31169714 CW |
4948 | if (--nr_to_scan <= 0) |
4949 | break; | |
4950 | } | |
4951 | } | |
4952 | ||
4953 | spin_lock(&shrink_list_lock); | |
4954 | mutex_unlock(&dev->struct_mutex); | |
4955 | ||
963b4836 CW |
4956 | would_deadlock = 0; |
4957 | ||
31169714 CW |
4958 | if (nr_to_scan <= 0) |
4959 | break; | |
4960 | } | |
4961 | ||
4962 | /* second pass, evict/count anything still on the inactive list */ | |
4963 | list_for_each_entry_safe(dev_priv, next_dev, | |
4964 | &shrink_list, mm.shrink_list) { | |
4965 | struct drm_device *dev = dev_priv->dev; | |
4966 | ||
4967 | if (! mutex_trylock(&dev->struct_mutex)) | |
4968 | continue; | |
4969 | ||
4970 | spin_unlock(&shrink_list_lock); | |
4971 | ||
4972 | list_for_each_entry_safe(obj_priv, next_obj, | |
4973 | &dev_priv->mm.inactive_list, | |
4974 | list) { | |
4975 | if (nr_to_scan > 0) { | |
a8089e84 | 4976 | i915_gem_object_unbind(&obj_priv->base); |
31169714 CW |
4977 | nr_to_scan--; |
4978 | } else | |
4979 | cnt++; | |
4980 | } | |
4981 | ||
4982 | spin_lock(&shrink_list_lock); | |
4983 | mutex_unlock(&dev->struct_mutex); | |
4984 | ||
4985 | would_deadlock = 0; | |
4986 | } | |
4987 | ||
1637ef41 CW |
4988 | if (nr_to_scan) { |
4989 | int active = 0; | |
4990 | ||
4991 | /* | |
4992 | * We are desperate for pages, so as a last resort, wait | |
4993 | * for the GPU to finish and discard whatever we can. | |
4994 | * This has a dramatic impact to reduce the number of | |
4995 | * OOM-killer events whilst running the GPU aggressively. | |
4996 | */ | |
4997 | list_for_each_entry(dev_priv, &shrink_list, mm.shrink_list) { | |
4998 | struct drm_device *dev = dev_priv->dev; | |
4999 | ||
5000 | if (!mutex_trylock(&dev->struct_mutex)) | |
5001 | continue; | |
5002 | ||
5003 | spin_unlock(&shrink_list_lock); | |
5004 | ||
5005 | if (i915_gpu_is_active(dev)) { | |
5006 | i915_gpu_idle(dev); | |
5007 | active++; | |
5008 | } | |
5009 | ||
5010 | spin_lock(&shrink_list_lock); | |
5011 | mutex_unlock(&dev->struct_mutex); | |
5012 | } | |
5013 | ||
5014 | if (active) | |
5015 | goto rescan; | |
5016 | } | |
5017 | ||
31169714 CW |
5018 | spin_unlock(&shrink_list_lock); |
5019 | ||
5020 | if (would_deadlock) | |
5021 | return -1; | |
5022 | else if (cnt > 0) | |
5023 | return (cnt / 100) * sysctl_vfs_cache_pressure; | |
5024 | else | |
5025 | return 0; | |
5026 | } | |
5027 | ||
5028 | static struct shrinker shrinker = { | |
5029 | .shrink = i915_gem_shrink, | |
5030 | .seeks = DEFAULT_SEEKS, | |
5031 | }; | |
5032 | ||
5033 | __init void | |
5034 | i915_gem_shrinker_init(void) | |
5035 | { | |
5036 | register_shrinker(&shrinker); | |
5037 | } | |
5038 | ||
5039 | __exit void | |
5040 | i915_gem_shrinker_exit(void) | |
5041 | { | |
5042 | unregister_shrinker(&shrinker); | |
5043 | } |