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> |
673a394b | 37 | |
28dfe52a EA |
38 | #define I915_GEM_GPU_DOMAINS (~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT)) |
39 | ||
e47c68e9 EA |
40 | static void i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj); |
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); |
07f73f69 | 53 | static int i915_gem_evict_something(struct drm_device *dev, int min_size); |
ab5ee576 | 54 | static int i915_gem_evict_from_inactive_list(struct drm_device *dev); |
71acb5eb DA |
55 | static int i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj, |
56 | struct drm_i915_gem_pwrite *args, | |
57 | struct drm_file *file_priv); | |
673a394b | 58 | |
31169714 CW |
59 | static LIST_HEAD(shrink_list); |
60 | static DEFINE_SPINLOCK(shrink_list_lock); | |
61 | ||
79e53945 JB |
62 | int i915_gem_do_init(struct drm_device *dev, unsigned long start, |
63 | unsigned long end) | |
673a394b EA |
64 | { |
65 | drm_i915_private_t *dev_priv = dev->dev_private; | |
673a394b | 66 | |
79e53945 JB |
67 | if (start >= end || |
68 | (start & (PAGE_SIZE - 1)) != 0 || | |
69 | (end & (PAGE_SIZE - 1)) != 0) { | |
673a394b EA |
70 | return -EINVAL; |
71 | } | |
72 | ||
79e53945 JB |
73 | drm_mm_init(&dev_priv->mm.gtt_space, start, |
74 | end - start); | |
673a394b | 75 | |
79e53945 JB |
76 | dev->gtt_total = (uint32_t) (end - start); |
77 | ||
78 | return 0; | |
79 | } | |
673a394b | 80 | |
79e53945 JB |
81 | int |
82 | i915_gem_init_ioctl(struct drm_device *dev, void *data, | |
83 | struct drm_file *file_priv) | |
84 | { | |
85 | struct drm_i915_gem_init *args = data; | |
86 | int ret; | |
87 | ||
88 | mutex_lock(&dev->struct_mutex); | |
89 | ret = i915_gem_do_init(dev, args->gtt_start, args->gtt_end); | |
673a394b EA |
90 | mutex_unlock(&dev->struct_mutex); |
91 | ||
79e53945 | 92 | return ret; |
673a394b EA |
93 | } |
94 | ||
5a125c3c EA |
95 | int |
96 | i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data, | |
97 | struct drm_file *file_priv) | |
98 | { | |
5a125c3c | 99 | struct drm_i915_gem_get_aperture *args = data; |
5a125c3c EA |
100 | |
101 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
102 | return -ENODEV; | |
103 | ||
104 | args->aper_size = dev->gtt_total; | |
2678d9d6 KP |
105 | args->aper_available_size = (args->aper_size - |
106 | atomic_read(&dev->pin_memory)); | |
5a125c3c EA |
107 | |
108 | return 0; | |
109 | } | |
110 | ||
673a394b EA |
111 | |
112 | /** | |
113 | * Creates a new mm object and returns a handle to it. | |
114 | */ | |
115 | int | |
116 | i915_gem_create_ioctl(struct drm_device *dev, void *data, | |
117 | struct drm_file *file_priv) | |
118 | { | |
119 | struct drm_i915_gem_create *args = data; | |
120 | struct drm_gem_object *obj; | |
a1a2d1d3 PP |
121 | int ret; |
122 | u32 handle; | |
673a394b EA |
123 | |
124 | args->size = roundup(args->size, PAGE_SIZE); | |
125 | ||
126 | /* Allocate the new object */ | |
127 | obj = drm_gem_object_alloc(dev, args->size); | |
128 | if (obj == NULL) | |
129 | return -ENOMEM; | |
130 | ||
131 | ret = drm_gem_handle_create(file_priv, obj, &handle); | |
bc9025bd | 132 | drm_gem_object_handle_unreference_unlocked(obj); |
673a394b EA |
133 | |
134 | if (ret) | |
135 | return ret; | |
136 | ||
137 | args->handle = handle; | |
138 | ||
139 | return 0; | |
140 | } | |
141 | ||
eb01459f EA |
142 | static inline int |
143 | fast_shmem_read(struct page **pages, | |
144 | loff_t page_base, int page_offset, | |
145 | char __user *data, | |
146 | int length) | |
147 | { | |
148 | char __iomem *vaddr; | |
2bc43b5c | 149 | int unwritten; |
eb01459f EA |
150 | |
151 | vaddr = kmap_atomic(pages[page_base >> PAGE_SHIFT], KM_USER0); | |
152 | if (vaddr == NULL) | |
153 | return -ENOMEM; | |
2bc43b5c | 154 | unwritten = __copy_to_user_inatomic(data, vaddr + page_offset, length); |
eb01459f EA |
155 | kunmap_atomic(vaddr, KM_USER0); |
156 | ||
2bc43b5c FM |
157 | if (unwritten) |
158 | return -EFAULT; | |
159 | ||
160 | return 0; | |
eb01459f EA |
161 | } |
162 | ||
280b713b EA |
163 | static int i915_gem_object_needs_bit17_swizzle(struct drm_gem_object *obj) |
164 | { | |
165 | drm_i915_private_t *dev_priv = obj->dev->dev_private; | |
23010e43 | 166 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
280b713b EA |
167 | |
168 | return dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_9_10_17 && | |
169 | obj_priv->tiling_mode != I915_TILING_NONE; | |
170 | } | |
171 | ||
40123c1f EA |
172 | static inline int |
173 | slow_shmem_copy(struct page *dst_page, | |
174 | int dst_offset, | |
175 | struct page *src_page, | |
176 | int src_offset, | |
177 | int length) | |
178 | { | |
179 | char *dst_vaddr, *src_vaddr; | |
180 | ||
181 | dst_vaddr = kmap_atomic(dst_page, KM_USER0); | |
182 | if (dst_vaddr == NULL) | |
183 | return -ENOMEM; | |
184 | ||
185 | src_vaddr = kmap_atomic(src_page, KM_USER1); | |
186 | if (src_vaddr == NULL) { | |
187 | kunmap_atomic(dst_vaddr, KM_USER0); | |
188 | return -ENOMEM; | |
189 | } | |
190 | ||
191 | memcpy(dst_vaddr + dst_offset, src_vaddr + src_offset, length); | |
192 | ||
193 | kunmap_atomic(src_vaddr, KM_USER1); | |
194 | kunmap_atomic(dst_vaddr, KM_USER0); | |
195 | ||
196 | return 0; | |
197 | } | |
198 | ||
280b713b EA |
199 | static inline int |
200 | slow_shmem_bit17_copy(struct page *gpu_page, | |
201 | int gpu_offset, | |
202 | struct page *cpu_page, | |
203 | int cpu_offset, | |
204 | int length, | |
205 | int is_read) | |
206 | { | |
207 | char *gpu_vaddr, *cpu_vaddr; | |
208 | ||
209 | /* Use the unswizzled path if this page isn't affected. */ | |
210 | if ((page_to_phys(gpu_page) & (1 << 17)) == 0) { | |
211 | if (is_read) | |
212 | return slow_shmem_copy(cpu_page, cpu_offset, | |
213 | gpu_page, gpu_offset, length); | |
214 | else | |
215 | return slow_shmem_copy(gpu_page, gpu_offset, | |
216 | cpu_page, cpu_offset, length); | |
217 | } | |
218 | ||
219 | gpu_vaddr = kmap_atomic(gpu_page, KM_USER0); | |
220 | if (gpu_vaddr == NULL) | |
221 | return -ENOMEM; | |
222 | ||
223 | cpu_vaddr = kmap_atomic(cpu_page, KM_USER1); | |
224 | if (cpu_vaddr == NULL) { | |
225 | kunmap_atomic(gpu_vaddr, KM_USER0); | |
226 | return -ENOMEM; | |
227 | } | |
228 | ||
229 | /* Copy the data, XORing A6 with A17 (1). The user already knows he's | |
230 | * XORing with the other bits (A9 for Y, A9 and A10 for X) | |
231 | */ | |
232 | while (length > 0) { | |
233 | int cacheline_end = ALIGN(gpu_offset + 1, 64); | |
234 | int this_length = min(cacheline_end - gpu_offset, length); | |
235 | int swizzled_gpu_offset = gpu_offset ^ 64; | |
236 | ||
237 | if (is_read) { | |
238 | memcpy(cpu_vaddr + cpu_offset, | |
239 | gpu_vaddr + swizzled_gpu_offset, | |
240 | this_length); | |
241 | } else { | |
242 | memcpy(gpu_vaddr + swizzled_gpu_offset, | |
243 | cpu_vaddr + cpu_offset, | |
244 | this_length); | |
245 | } | |
246 | cpu_offset += this_length; | |
247 | gpu_offset += this_length; | |
248 | length -= this_length; | |
249 | } | |
250 | ||
251 | kunmap_atomic(cpu_vaddr, KM_USER1); | |
252 | kunmap_atomic(gpu_vaddr, KM_USER0); | |
253 | ||
254 | return 0; | |
255 | } | |
256 | ||
eb01459f EA |
257 | /** |
258 | * This is the fast shmem pread path, which attempts to copy_from_user directly | |
259 | * from the backing pages of the object to the user's address space. On a | |
260 | * fault, it fails so we can fall back to i915_gem_shmem_pwrite_slow(). | |
261 | */ | |
262 | static int | |
263 | i915_gem_shmem_pread_fast(struct drm_device *dev, struct drm_gem_object *obj, | |
264 | struct drm_i915_gem_pread *args, | |
265 | struct drm_file *file_priv) | |
266 | { | |
23010e43 | 267 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
eb01459f EA |
268 | ssize_t remain; |
269 | loff_t offset, page_base; | |
270 | char __user *user_data; | |
271 | int page_offset, page_length; | |
272 | int ret; | |
273 | ||
274 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
275 | remain = args->size; | |
276 | ||
277 | mutex_lock(&dev->struct_mutex); | |
278 | ||
4bdadb97 | 279 | ret = i915_gem_object_get_pages(obj, 0); |
eb01459f EA |
280 | if (ret != 0) |
281 | goto fail_unlock; | |
282 | ||
283 | ret = i915_gem_object_set_cpu_read_domain_range(obj, args->offset, | |
284 | args->size); | |
285 | if (ret != 0) | |
286 | goto fail_put_pages; | |
287 | ||
23010e43 | 288 | obj_priv = to_intel_bo(obj); |
eb01459f EA |
289 | offset = args->offset; |
290 | ||
291 | while (remain > 0) { | |
292 | /* Operation in this page | |
293 | * | |
294 | * page_base = page offset within aperture | |
295 | * page_offset = offset within page | |
296 | * page_length = bytes to copy for this page | |
297 | */ | |
298 | page_base = (offset & ~(PAGE_SIZE-1)); | |
299 | page_offset = offset & (PAGE_SIZE-1); | |
300 | page_length = remain; | |
301 | if ((page_offset + remain) > PAGE_SIZE) | |
302 | page_length = PAGE_SIZE - page_offset; | |
303 | ||
304 | ret = fast_shmem_read(obj_priv->pages, | |
305 | page_base, page_offset, | |
306 | user_data, page_length); | |
307 | if (ret) | |
308 | goto fail_put_pages; | |
309 | ||
310 | remain -= page_length; | |
311 | user_data += page_length; | |
312 | offset += page_length; | |
313 | } | |
314 | ||
315 | fail_put_pages: | |
316 | i915_gem_object_put_pages(obj); | |
317 | fail_unlock: | |
318 | mutex_unlock(&dev->struct_mutex); | |
319 | ||
320 | return ret; | |
321 | } | |
322 | ||
07f73f69 CW |
323 | static int |
324 | i915_gem_object_get_pages_or_evict(struct drm_gem_object *obj) | |
325 | { | |
326 | int ret; | |
327 | ||
4bdadb97 | 328 | ret = i915_gem_object_get_pages(obj, __GFP_NORETRY | __GFP_NOWARN); |
07f73f69 CW |
329 | |
330 | /* If we've insufficient memory to map in the pages, attempt | |
331 | * to make some space by throwing out some old buffers. | |
332 | */ | |
333 | if (ret == -ENOMEM) { | |
334 | struct drm_device *dev = obj->dev; | |
07f73f69 CW |
335 | |
336 | ret = i915_gem_evict_something(dev, obj->size); | |
337 | if (ret) | |
338 | return ret; | |
339 | ||
4bdadb97 | 340 | ret = i915_gem_object_get_pages(obj, 0); |
07f73f69 CW |
341 | } |
342 | ||
343 | return ret; | |
344 | } | |
345 | ||
eb01459f EA |
346 | /** |
347 | * This is the fallback shmem pread path, which allocates temporary storage | |
348 | * in kernel space to copy_to_user into outside of the struct_mutex, so we | |
349 | * can copy out of the object's backing pages while holding the struct mutex | |
350 | * and not take page faults. | |
351 | */ | |
352 | static int | |
353 | i915_gem_shmem_pread_slow(struct drm_device *dev, struct drm_gem_object *obj, | |
354 | struct drm_i915_gem_pread *args, | |
355 | struct drm_file *file_priv) | |
356 | { | |
23010e43 | 357 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
eb01459f EA |
358 | struct mm_struct *mm = current->mm; |
359 | struct page **user_pages; | |
360 | ssize_t remain; | |
361 | loff_t offset, pinned_pages, i; | |
362 | loff_t first_data_page, last_data_page, num_pages; | |
363 | int shmem_page_index, shmem_page_offset; | |
364 | int data_page_index, data_page_offset; | |
365 | int page_length; | |
366 | int ret; | |
367 | uint64_t data_ptr = args->data_ptr; | |
280b713b | 368 | int do_bit17_swizzling; |
eb01459f EA |
369 | |
370 | remain = args->size; | |
371 | ||
372 | /* Pin the user pages containing the data. We can't fault while | |
373 | * holding the struct mutex, yet we want to hold it while | |
374 | * dereferencing the user data. | |
375 | */ | |
376 | first_data_page = data_ptr / PAGE_SIZE; | |
377 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; | |
378 | num_pages = last_data_page - first_data_page + 1; | |
379 | ||
8e7d2b2c | 380 | user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); |
eb01459f EA |
381 | if (user_pages == NULL) |
382 | return -ENOMEM; | |
383 | ||
384 | down_read(&mm->mmap_sem); | |
385 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, | |
e5e9ecde | 386 | num_pages, 1, 0, user_pages, NULL); |
eb01459f EA |
387 | up_read(&mm->mmap_sem); |
388 | if (pinned_pages < num_pages) { | |
389 | ret = -EFAULT; | |
390 | goto fail_put_user_pages; | |
391 | } | |
392 | ||
280b713b EA |
393 | do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
394 | ||
eb01459f EA |
395 | mutex_lock(&dev->struct_mutex); |
396 | ||
07f73f69 CW |
397 | ret = i915_gem_object_get_pages_or_evict(obj); |
398 | if (ret) | |
eb01459f EA |
399 | goto fail_unlock; |
400 | ||
401 | ret = i915_gem_object_set_cpu_read_domain_range(obj, args->offset, | |
402 | args->size); | |
403 | if (ret != 0) | |
404 | goto fail_put_pages; | |
405 | ||
23010e43 | 406 | obj_priv = to_intel_bo(obj); |
eb01459f EA |
407 | offset = args->offset; |
408 | ||
409 | while (remain > 0) { | |
410 | /* Operation in this page | |
411 | * | |
412 | * shmem_page_index = page number within shmem file | |
413 | * shmem_page_offset = offset within page in shmem file | |
414 | * data_page_index = page number in get_user_pages return | |
415 | * data_page_offset = offset with data_page_index page. | |
416 | * page_length = bytes to copy for this page | |
417 | */ | |
418 | shmem_page_index = offset / PAGE_SIZE; | |
419 | shmem_page_offset = offset & ~PAGE_MASK; | |
420 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; | |
421 | data_page_offset = data_ptr & ~PAGE_MASK; | |
422 | ||
423 | page_length = remain; | |
424 | if ((shmem_page_offset + page_length) > PAGE_SIZE) | |
425 | page_length = PAGE_SIZE - shmem_page_offset; | |
426 | if ((data_page_offset + page_length) > PAGE_SIZE) | |
427 | page_length = PAGE_SIZE - data_page_offset; | |
428 | ||
280b713b EA |
429 | if (do_bit17_swizzling) { |
430 | ret = slow_shmem_bit17_copy(obj_priv->pages[shmem_page_index], | |
431 | shmem_page_offset, | |
432 | user_pages[data_page_index], | |
433 | data_page_offset, | |
434 | page_length, | |
435 | 1); | |
436 | } else { | |
437 | ret = slow_shmem_copy(user_pages[data_page_index], | |
438 | data_page_offset, | |
439 | obj_priv->pages[shmem_page_index], | |
440 | shmem_page_offset, | |
441 | page_length); | |
442 | } | |
eb01459f EA |
443 | if (ret) |
444 | goto fail_put_pages; | |
445 | ||
446 | remain -= page_length; | |
447 | data_ptr += page_length; | |
448 | offset += page_length; | |
449 | } | |
450 | ||
451 | fail_put_pages: | |
452 | i915_gem_object_put_pages(obj); | |
453 | fail_unlock: | |
454 | mutex_unlock(&dev->struct_mutex); | |
455 | fail_put_user_pages: | |
456 | for (i = 0; i < pinned_pages; i++) { | |
457 | SetPageDirty(user_pages[i]); | |
458 | page_cache_release(user_pages[i]); | |
459 | } | |
8e7d2b2c | 460 | drm_free_large(user_pages); |
eb01459f EA |
461 | |
462 | return ret; | |
463 | } | |
464 | ||
673a394b EA |
465 | /** |
466 | * Reads data from the object referenced by handle. | |
467 | * | |
468 | * On error, the contents of *data are undefined. | |
469 | */ | |
470 | int | |
471 | i915_gem_pread_ioctl(struct drm_device *dev, void *data, | |
472 | struct drm_file *file_priv) | |
473 | { | |
474 | struct drm_i915_gem_pread *args = data; | |
475 | struct drm_gem_object *obj; | |
476 | struct drm_i915_gem_object *obj_priv; | |
673a394b EA |
477 | int ret; |
478 | ||
479 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
480 | if (obj == NULL) | |
481 | return -EBADF; | |
23010e43 | 482 | obj_priv = to_intel_bo(obj); |
673a394b EA |
483 | |
484 | /* Bounds check source. | |
485 | * | |
486 | * XXX: This could use review for overflow issues... | |
487 | */ | |
488 | if (args->offset > obj->size || args->size > obj->size || | |
489 | args->offset + args->size > obj->size) { | |
bc9025bd | 490 | drm_gem_object_unreference_unlocked(obj); |
673a394b EA |
491 | return -EINVAL; |
492 | } | |
493 | ||
280b713b | 494 | if (i915_gem_object_needs_bit17_swizzle(obj)) { |
eb01459f | 495 | ret = i915_gem_shmem_pread_slow(dev, obj, args, file_priv); |
280b713b EA |
496 | } else { |
497 | ret = i915_gem_shmem_pread_fast(dev, obj, args, file_priv); | |
498 | if (ret != 0) | |
499 | ret = i915_gem_shmem_pread_slow(dev, obj, args, | |
500 | file_priv); | |
501 | } | |
673a394b | 502 | |
bc9025bd | 503 | drm_gem_object_unreference_unlocked(obj); |
673a394b | 504 | |
eb01459f | 505 | return ret; |
673a394b EA |
506 | } |
507 | ||
0839ccb8 KP |
508 | /* This is the fast write path which cannot handle |
509 | * page faults in the source data | |
9b7530cc | 510 | */ |
0839ccb8 KP |
511 | |
512 | static inline int | |
513 | fast_user_write(struct io_mapping *mapping, | |
514 | loff_t page_base, int page_offset, | |
515 | char __user *user_data, | |
516 | int length) | |
9b7530cc | 517 | { |
9b7530cc | 518 | char *vaddr_atomic; |
0839ccb8 | 519 | unsigned long unwritten; |
9b7530cc | 520 | |
0839ccb8 KP |
521 | vaddr_atomic = io_mapping_map_atomic_wc(mapping, page_base); |
522 | unwritten = __copy_from_user_inatomic_nocache(vaddr_atomic + page_offset, | |
523 | user_data, length); | |
524 | io_mapping_unmap_atomic(vaddr_atomic); | |
525 | if (unwritten) | |
526 | return -EFAULT; | |
527 | return 0; | |
528 | } | |
529 | ||
530 | /* Here's the write path which can sleep for | |
531 | * page faults | |
532 | */ | |
533 | ||
534 | static inline int | |
3de09aa3 EA |
535 | slow_kernel_write(struct io_mapping *mapping, |
536 | loff_t gtt_base, int gtt_offset, | |
537 | struct page *user_page, int user_offset, | |
538 | int length) | |
0839ccb8 | 539 | { |
3de09aa3 | 540 | char *src_vaddr, *dst_vaddr; |
0839ccb8 KP |
541 | unsigned long unwritten; |
542 | ||
3de09aa3 EA |
543 | dst_vaddr = io_mapping_map_atomic_wc(mapping, gtt_base); |
544 | src_vaddr = kmap_atomic(user_page, KM_USER1); | |
545 | unwritten = __copy_from_user_inatomic_nocache(dst_vaddr + gtt_offset, | |
546 | src_vaddr + user_offset, | |
547 | length); | |
548 | kunmap_atomic(src_vaddr, KM_USER1); | |
549 | io_mapping_unmap_atomic(dst_vaddr); | |
0839ccb8 KP |
550 | if (unwritten) |
551 | return -EFAULT; | |
9b7530cc | 552 | return 0; |
9b7530cc LT |
553 | } |
554 | ||
40123c1f EA |
555 | static inline int |
556 | fast_shmem_write(struct page **pages, | |
557 | loff_t page_base, int page_offset, | |
558 | char __user *data, | |
559 | int length) | |
560 | { | |
561 | char __iomem *vaddr; | |
d0088775 | 562 | unsigned long unwritten; |
40123c1f EA |
563 | |
564 | vaddr = kmap_atomic(pages[page_base >> PAGE_SHIFT], KM_USER0); | |
565 | if (vaddr == NULL) | |
566 | return -ENOMEM; | |
d0088775 | 567 | unwritten = __copy_from_user_inatomic(vaddr + page_offset, data, length); |
40123c1f EA |
568 | kunmap_atomic(vaddr, KM_USER0); |
569 | ||
d0088775 DA |
570 | if (unwritten) |
571 | return -EFAULT; | |
40123c1f EA |
572 | return 0; |
573 | } | |
574 | ||
3de09aa3 EA |
575 | /** |
576 | * This is the fast pwrite path, where we copy the data directly from the | |
577 | * user into the GTT, uncached. | |
578 | */ | |
673a394b | 579 | static int |
3de09aa3 EA |
580 | i915_gem_gtt_pwrite_fast(struct drm_device *dev, struct drm_gem_object *obj, |
581 | struct drm_i915_gem_pwrite *args, | |
582 | struct drm_file *file_priv) | |
673a394b | 583 | { |
23010e43 | 584 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
0839ccb8 | 585 | drm_i915_private_t *dev_priv = dev->dev_private; |
673a394b | 586 | ssize_t remain; |
0839ccb8 | 587 | loff_t offset, page_base; |
673a394b | 588 | char __user *user_data; |
0839ccb8 KP |
589 | int page_offset, page_length; |
590 | int ret; | |
673a394b EA |
591 | |
592 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
593 | remain = args->size; | |
594 | if (!access_ok(VERIFY_READ, user_data, remain)) | |
595 | return -EFAULT; | |
596 | ||
597 | ||
598 | mutex_lock(&dev->struct_mutex); | |
599 | ret = i915_gem_object_pin(obj, 0); | |
600 | if (ret) { | |
601 | mutex_unlock(&dev->struct_mutex); | |
602 | return ret; | |
603 | } | |
2ef7eeaa | 604 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); |
673a394b EA |
605 | if (ret) |
606 | goto fail; | |
607 | ||
23010e43 | 608 | obj_priv = to_intel_bo(obj); |
673a394b | 609 | offset = obj_priv->gtt_offset + args->offset; |
673a394b EA |
610 | |
611 | while (remain > 0) { | |
612 | /* Operation in this page | |
613 | * | |
0839ccb8 KP |
614 | * page_base = page offset within aperture |
615 | * page_offset = offset within page | |
616 | * page_length = bytes to copy for this page | |
673a394b | 617 | */ |
0839ccb8 KP |
618 | page_base = (offset & ~(PAGE_SIZE-1)); |
619 | page_offset = offset & (PAGE_SIZE-1); | |
620 | page_length = remain; | |
621 | if ((page_offset + remain) > PAGE_SIZE) | |
622 | page_length = PAGE_SIZE - page_offset; | |
623 | ||
624 | ret = fast_user_write (dev_priv->mm.gtt_mapping, page_base, | |
625 | page_offset, user_data, page_length); | |
626 | ||
627 | /* If we get a fault while copying data, then (presumably) our | |
3de09aa3 EA |
628 | * source page isn't available. Return the error and we'll |
629 | * retry in the slow path. | |
0839ccb8 | 630 | */ |
3de09aa3 EA |
631 | if (ret) |
632 | goto fail; | |
673a394b | 633 | |
0839ccb8 KP |
634 | remain -= page_length; |
635 | user_data += page_length; | |
636 | offset += page_length; | |
673a394b | 637 | } |
673a394b EA |
638 | |
639 | fail: | |
640 | i915_gem_object_unpin(obj); | |
641 | mutex_unlock(&dev->struct_mutex); | |
642 | ||
643 | return ret; | |
644 | } | |
645 | ||
3de09aa3 EA |
646 | /** |
647 | * This is the fallback GTT pwrite path, which uses get_user_pages to pin | |
648 | * the memory and maps it using kmap_atomic for copying. | |
649 | * | |
650 | * This code resulted in x11perf -rgb10text consuming about 10% more CPU | |
651 | * than using i915_gem_gtt_pwrite_fast on a G45 (32-bit). | |
652 | */ | |
3043c60c | 653 | static int |
3de09aa3 EA |
654 | i915_gem_gtt_pwrite_slow(struct drm_device *dev, struct drm_gem_object *obj, |
655 | struct drm_i915_gem_pwrite *args, | |
656 | struct drm_file *file_priv) | |
673a394b | 657 | { |
23010e43 | 658 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
3de09aa3 EA |
659 | drm_i915_private_t *dev_priv = dev->dev_private; |
660 | ssize_t remain; | |
661 | loff_t gtt_page_base, offset; | |
662 | loff_t first_data_page, last_data_page, num_pages; | |
663 | loff_t pinned_pages, i; | |
664 | struct page **user_pages; | |
665 | struct mm_struct *mm = current->mm; | |
666 | int gtt_page_offset, data_page_offset, data_page_index, page_length; | |
673a394b | 667 | int ret; |
3de09aa3 EA |
668 | uint64_t data_ptr = args->data_ptr; |
669 | ||
670 | remain = args->size; | |
671 | ||
672 | /* Pin the user pages containing the data. We can't fault while | |
673 | * holding the struct mutex, and all of the pwrite implementations | |
674 | * want to hold it while dereferencing the user data. | |
675 | */ | |
676 | first_data_page = data_ptr / PAGE_SIZE; | |
677 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; | |
678 | num_pages = last_data_page - first_data_page + 1; | |
679 | ||
8e7d2b2c | 680 | user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); |
3de09aa3 EA |
681 | if (user_pages == NULL) |
682 | return -ENOMEM; | |
683 | ||
684 | down_read(&mm->mmap_sem); | |
685 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, | |
686 | num_pages, 0, 0, user_pages, NULL); | |
687 | up_read(&mm->mmap_sem); | |
688 | if (pinned_pages < num_pages) { | |
689 | ret = -EFAULT; | |
690 | goto out_unpin_pages; | |
691 | } | |
673a394b EA |
692 | |
693 | mutex_lock(&dev->struct_mutex); | |
3de09aa3 EA |
694 | ret = i915_gem_object_pin(obj, 0); |
695 | if (ret) | |
696 | goto out_unlock; | |
697 | ||
698 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); | |
699 | if (ret) | |
700 | goto out_unpin_object; | |
701 | ||
23010e43 | 702 | obj_priv = to_intel_bo(obj); |
3de09aa3 EA |
703 | offset = obj_priv->gtt_offset + args->offset; |
704 | ||
705 | while (remain > 0) { | |
706 | /* Operation in this page | |
707 | * | |
708 | * gtt_page_base = page offset within aperture | |
709 | * gtt_page_offset = offset within page in aperture | |
710 | * data_page_index = page number in get_user_pages return | |
711 | * data_page_offset = offset with data_page_index page. | |
712 | * page_length = bytes to copy for this page | |
713 | */ | |
714 | gtt_page_base = offset & PAGE_MASK; | |
715 | gtt_page_offset = offset & ~PAGE_MASK; | |
716 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; | |
717 | data_page_offset = data_ptr & ~PAGE_MASK; | |
718 | ||
719 | page_length = remain; | |
720 | if ((gtt_page_offset + page_length) > PAGE_SIZE) | |
721 | page_length = PAGE_SIZE - gtt_page_offset; | |
722 | if ((data_page_offset + page_length) > PAGE_SIZE) | |
723 | page_length = PAGE_SIZE - data_page_offset; | |
724 | ||
725 | ret = slow_kernel_write(dev_priv->mm.gtt_mapping, | |
726 | gtt_page_base, gtt_page_offset, | |
727 | user_pages[data_page_index], | |
728 | data_page_offset, | |
729 | page_length); | |
730 | ||
731 | /* If we get a fault while copying data, then (presumably) our | |
732 | * source page isn't available. Return the error and we'll | |
733 | * retry in the slow path. | |
734 | */ | |
735 | if (ret) | |
736 | goto out_unpin_object; | |
737 | ||
738 | remain -= page_length; | |
739 | offset += page_length; | |
740 | data_ptr += page_length; | |
741 | } | |
742 | ||
743 | out_unpin_object: | |
744 | i915_gem_object_unpin(obj); | |
745 | out_unlock: | |
746 | mutex_unlock(&dev->struct_mutex); | |
747 | out_unpin_pages: | |
748 | for (i = 0; i < pinned_pages; i++) | |
749 | page_cache_release(user_pages[i]); | |
8e7d2b2c | 750 | drm_free_large(user_pages); |
3de09aa3 EA |
751 | |
752 | return ret; | |
753 | } | |
754 | ||
40123c1f EA |
755 | /** |
756 | * This is the fast shmem pwrite path, which attempts to directly | |
757 | * copy_from_user into the kmapped pages backing the object. | |
758 | */ | |
3043c60c | 759 | static int |
40123c1f EA |
760 | i915_gem_shmem_pwrite_fast(struct drm_device *dev, struct drm_gem_object *obj, |
761 | struct drm_i915_gem_pwrite *args, | |
762 | struct drm_file *file_priv) | |
673a394b | 763 | { |
23010e43 | 764 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
40123c1f EA |
765 | ssize_t remain; |
766 | loff_t offset, page_base; | |
767 | char __user *user_data; | |
768 | int page_offset, page_length; | |
673a394b | 769 | int ret; |
40123c1f EA |
770 | |
771 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
772 | remain = args->size; | |
673a394b EA |
773 | |
774 | mutex_lock(&dev->struct_mutex); | |
775 | ||
4bdadb97 | 776 | ret = i915_gem_object_get_pages(obj, 0); |
40123c1f EA |
777 | if (ret != 0) |
778 | goto fail_unlock; | |
673a394b | 779 | |
e47c68e9 | 780 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
40123c1f EA |
781 | if (ret != 0) |
782 | goto fail_put_pages; | |
783 | ||
23010e43 | 784 | obj_priv = to_intel_bo(obj); |
40123c1f EA |
785 | offset = args->offset; |
786 | obj_priv->dirty = 1; | |
787 | ||
788 | while (remain > 0) { | |
789 | /* Operation in this page | |
790 | * | |
791 | * page_base = page offset within aperture | |
792 | * page_offset = offset within page | |
793 | * page_length = bytes to copy for this page | |
794 | */ | |
795 | page_base = (offset & ~(PAGE_SIZE-1)); | |
796 | page_offset = offset & (PAGE_SIZE-1); | |
797 | page_length = remain; | |
798 | if ((page_offset + remain) > PAGE_SIZE) | |
799 | page_length = PAGE_SIZE - page_offset; | |
800 | ||
801 | ret = fast_shmem_write(obj_priv->pages, | |
802 | page_base, page_offset, | |
803 | user_data, page_length); | |
804 | if (ret) | |
805 | goto fail_put_pages; | |
806 | ||
807 | remain -= page_length; | |
808 | user_data += page_length; | |
809 | offset += page_length; | |
810 | } | |
811 | ||
812 | fail_put_pages: | |
813 | i915_gem_object_put_pages(obj); | |
814 | fail_unlock: | |
815 | mutex_unlock(&dev->struct_mutex); | |
816 | ||
817 | return ret; | |
818 | } | |
819 | ||
820 | /** | |
821 | * This is the fallback shmem pwrite path, which uses get_user_pages to pin | |
822 | * the memory and maps it using kmap_atomic for copying. | |
823 | * | |
824 | * This avoids taking mmap_sem for faulting on the user's address while the | |
825 | * struct_mutex is held. | |
826 | */ | |
827 | static int | |
828 | i915_gem_shmem_pwrite_slow(struct drm_device *dev, struct drm_gem_object *obj, | |
829 | struct drm_i915_gem_pwrite *args, | |
830 | struct drm_file *file_priv) | |
831 | { | |
23010e43 | 832 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
40123c1f EA |
833 | struct mm_struct *mm = current->mm; |
834 | struct page **user_pages; | |
835 | ssize_t remain; | |
836 | loff_t offset, pinned_pages, i; | |
837 | loff_t first_data_page, last_data_page, num_pages; | |
838 | int shmem_page_index, shmem_page_offset; | |
839 | int data_page_index, data_page_offset; | |
840 | int page_length; | |
841 | int ret; | |
842 | uint64_t data_ptr = args->data_ptr; | |
280b713b | 843 | int do_bit17_swizzling; |
40123c1f EA |
844 | |
845 | remain = args->size; | |
846 | ||
847 | /* Pin the user pages containing the data. We can't fault while | |
848 | * holding the struct mutex, and all of the pwrite implementations | |
849 | * want to hold it while dereferencing the user data. | |
850 | */ | |
851 | first_data_page = data_ptr / PAGE_SIZE; | |
852 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; | |
853 | num_pages = last_data_page - first_data_page + 1; | |
854 | ||
8e7d2b2c | 855 | user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); |
40123c1f EA |
856 | if (user_pages == NULL) |
857 | return -ENOMEM; | |
858 | ||
859 | down_read(&mm->mmap_sem); | |
860 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, | |
861 | num_pages, 0, 0, user_pages, NULL); | |
862 | up_read(&mm->mmap_sem); | |
863 | if (pinned_pages < num_pages) { | |
864 | ret = -EFAULT; | |
865 | goto fail_put_user_pages; | |
673a394b EA |
866 | } |
867 | ||
280b713b EA |
868 | do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
869 | ||
40123c1f EA |
870 | mutex_lock(&dev->struct_mutex); |
871 | ||
07f73f69 CW |
872 | ret = i915_gem_object_get_pages_or_evict(obj); |
873 | if (ret) | |
40123c1f EA |
874 | goto fail_unlock; |
875 | ||
876 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); | |
877 | if (ret != 0) | |
878 | goto fail_put_pages; | |
879 | ||
23010e43 | 880 | obj_priv = to_intel_bo(obj); |
673a394b | 881 | offset = args->offset; |
40123c1f | 882 | obj_priv->dirty = 1; |
673a394b | 883 | |
40123c1f EA |
884 | while (remain > 0) { |
885 | /* Operation in this page | |
886 | * | |
887 | * shmem_page_index = page number within shmem file | |
888 | * shmem_page_offset = offset within page in shmem file | |
889 | * data_page_index = page number in get_user_pages return | |
890 | * data_page_offset = offset with data_page_index page. | |
891 | * page_length = bytes to copy for this page | |
892 | */ | |
893 | shmem_page_index = offset / PAGE_SIZE; | |
894 | shmem_page_offset = offset & ~PAGE_MASK; | |
895 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; | |
896 | data_page_offset = data_ptr & ~PAGE_MASK; | |
897 | ||
898 | page_length = remain; | |
899 | if ((shmem_page_offset + page_length) > PAGE_SIZE) | |
900 | page_length = PAGE_SIZE - shmem_page_offset; | |
901 | if ((data_page_offset + page_length) > PAGE_SIZE) | |
902 | page_length = PAGE_SIZE - data_page_offset; | |
903 | ||
280b713b EA |
904 | if (do_bit17_swizzling) { |
905 | ret = slow_shmem_bit17_copy(obj_priv->pages[shmem_page_index], | |
906 | shmem_page_offset, | |
907 | user_pages[data_page_index], | |
908 | data_page_offset, | |
909 | page_length, | |
910 | 0); | |
911 | } else { | |
912 | ret = slow_shmem_copy(obj_priv->pages[shmem_page_index], | |
913 | shmem_page_offset, | |
914 | user_pages[data_page_index], | |
915 | data_page_offset, | |
916 | page_length); | |
917 | } | |
40123c1f EA |
918 | if (ret) |
919 | goto fail_put_pages; | |
920 | ||
921 | remain -= page_length; | |
922 | data_ptr += page_length; | |
923 | offset += page_length; | |
673a394b EA |
924 | } |
925 | ||
40123c1f EA |
926 | fail_put_pages: |
927 | i915_gem_object_put_pages(obj); | |
928 | fail_unlock: | |
673a394b | 929 | mutex_unlock(&dev->struct_mutex); |
40123c1f EA |
930 | fail_put_user_pages: |
931 | for (i = 0; i < pinned_pages; i++) | |
932 | page_cache_release(user_pages[i]); | |
8e7d2b2c | 933 | drm_free_large(user_pages); |
673a394b | 934 | |
40123c1f | 935 | return ret; |
673a394b EA |
936 | } |
937 | ||
938 | /** | |
939 | * Writes data to the object referenced by handle. | |
940 | * | |
941 | * On error, the contents of the buffer that were to be modified are undefined. | |
942 | */ | |
943 | int | |
944 | i915_gem_pwrite_ioctl(struct drm_device *dev, void *data, | |
945 | struct drm_file *file_priv) | |
946 | { | |
947 | struct drm_i915_gem_pwrite *args = data; | |
948 | struct drm_gem_object *obj; | |
949 | struct drm_i915_gem_object *obj_priv; | |
950 | int ret = 0; | |
951 | ||
952 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
953 | if (obj == NULL) | |
954 | return -EBADF; | |
23010e43 | 955 | obj_priv = to_intel_bo(obj); |
673a394b EA |
956 | |
957 | /* Bounds check destination. | |
958 | * | |
959 | * XXX: This could use review for overflow issues... | |
960 | */ | |
961 | if (args->offset > obj->size || args->size > obj->size || | |
962 | args->offset + args->size > obj->size) { | |
bc9025bd | 963 | drm_gem_object_unreference_unlocked(obj); |
673a394b EA |
964 | return -EINVAL; |
965 | } | |
966 | ||
967 | /* We can only do the GTT pwrite on untiled buffers, as otherwise | |
968 | * it would end up going through the fenced access, and we'll get | |
969 | * different detiling behavior between reading and writing. | |
970 | * pread/pwrite currently are reading and writing from the CPU | |
971 | * perspective, requiring manual detiling by the client. | |
972 | */ | |
71acb5eb DA |
973 | if (obj_priv->phys_obj) |
974 | ret = i915_gem_phys_pwrite(dev, obj, args, file_priv); | |
975 | else if (obj_priv->tiling_mode == I915_TILING_NONE && | |
3de09aa3 EA |
976 | dev->gtt_total != 0) { |
977 | ret = i915_gem_gtt_pwrite_fast(dev, obj, args, file_priv); | |
978 | if (ret == -EFAULT) { | |
979 | ret = i915_gem_gtt_pwrite_slow(dev, obj, args, | |
980 | file_priv); | |
981 | } | |
280b713b EA |
982 | } else if (i915_gem_object_needs_bit17_swizzle(obj)) { |
983 | ret = i915_gem_shmem_pwrite_slow(dev, obj, args, file_priv); | |
40123c1f EA |
984 | } else { |
985 | ret = i915_gem_shmem_pwrite_fast(dev, obj, args, file_priv); | |
986 | if (ret == -EFAULT) { | |
987 | ret = i915_gem_shmem_pwrite_slow(dev, obj, args, | |
988 | file_priv); | |
989 | } | |
990 | } | |
673a394b EA |
991 | |
992 | #if WATCH_PWRITE | |
993 | if (ret) | |
994 | DRM_INFO("pwrite failed %d\n", ret); | |
995 | #endif | |
996 | ||
bc9025bd | 997 | drm_gem_object_unreference_unlocked(obj); |
673a394b EA |
998 | |
999 | return ret; | |
1000 | } | |
1001 | ||
1002 | /** | |
2ef7eeaa EA |
1003 | * Called when user space prepares to use an object with the CPU, either |
1004 | * through the mmap ioctl's mapping or a GTT mapping. | |
673a394b EA |
1005 | */ |
1006 | int | |
1007 | i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, | |
1008 | struct drm_file *file_priv) | |
1009 | { | |
a09ba7fa | 1010 | struct drm_i915_private *dev_priv = dev->dev_private; |
673a394b EA |
1011 | struct drm_i915_gem_set_domain *args = data; |
1012 | struct drm_gem_object *obj; | |
652c393a | 1013 | struct drm_i915_gem_object *obj_priv; |
2ef7eeaa EA |
1014 | uint32_t read_domains = args->read_domains; |
1015 | uint32_t write_domain = args->write_domain; | |
673a394b EA |
1016 | int ret; |
1017 | ||
1018 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1019 | return -ENODEV; | |
1020 | ||
2ef7eeaa | 1021 | /* Only handle setting domains to types used by the CPU. */ |
21d509e3 | 1022 | if (write_domain & I915_GEM_GPU_DOMAINS) |
2ef7eeaa EA |
1023 | return -EINVAL; |
1024 | ||
21d509e3 | 1025 | if (read_domains & I915_GEM_GPU_DOMAINS) |
2ef7eeaa EA |
1026 | return -EINVAL; |
1027 | ||
1028 | /* Having something in the write domain implies it's in the read | |
1029 | * domain, and only that read domain. Enforce that in the request. | |
1030 | */ | |
1031 | if (write_domain != 0 && read_domains != write_domain) | |
1032 | return -EINVAL; | |
1033 | ||
673a394b EA |
1034 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
1035 | if (obj == NULL) | |
1036 | return -EBADF; | |
23010e43 | 1037 | obj_priv = to_intel_bo(obj); |
673a394b EA |
1038 | |
1039 | mutex_lock(&dev->struct_mutex); | |
652c393a JB |
1040 | |
1041 | intel_mark_busy(dev, obj); | |
1042 | ||
673a394b | 1043 | #if WATCH_BUF |
cfd43c02 | 1044 | DRM_INFO("set_domain_ioctl %p(%zd), %08x %08x\n", |
2ef7eeaa | 1045 | obj, obj->size, read_domains, write_domain); |
673a394b | 1046 | #endif |
2ef7eeaa EA |
1047 | if (read_domains & I915_GEM_DOMAIN_GTT) { |
1048 | ret = i915_gem_object_set_to_gtt_domain(obj, write_domain != 0); | |
02354392 | 1049 | |
a09ba7fa EA |
1050 | /* Update the LRU on the fence for the CPU access that's |
1051 | * about to occur. | |
1052 | */ | |
1053 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) { | |
1054 | list_move_tail(&obj_priv->fence_list, | |
1055 | &dev_priv->mm.fence_list); | |
1056 | } | |
1057 | ||
02354392 EA |
1058 | /* Silently promote "you're not bound, there was nothing to do" |
1059 | * to success, since the client was just asking us to | |
1060 | * make sure everything was done. | |
1061 | */ | |
1062 | if (ret == -EINVAL) | |
1063 | ret = 0; | |
2ef7eeaa | 1064 | } else { |
e47c68e9 | 1065 | ret = i915_gem_object_set_to_cpu_domain(obj, write_domain != 0); |
2ef7eeaa EA |
1066 | } |
1067 | ||
673a394b EA |
1068 | drm_gem_object_unreference(obj); |
1069 | mutex_unlock(&dev->struct_mutex); | |
1070 | return ret; | |
1071 | } | |
1072 | ||
1073 | /** | |
1074 | * Called when user space has done writes to this buffer | |
1075 | */ | |
1076 | int | |
1077 | i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data, | |
1078 | struct drm_file *file_priv) | |
1079 | { | |
1080 | struct drm_i915_gem_sw_finish *args = data; | |
1081 | struct drm_gem_object *obj; | |
1082 | struct drm_i915_gem_object *obj_priv; | |
1083 | int ret = 0; | |
1084 | ||
1085 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1086 | return -ENODEV; | |
1087 | ||
1088 | mutex_lock(&dev->struct_mutex); | |
1089 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
1090 | if (obj == NULL) { | |
1091 | mutex_unlock(&dev->struct_mutex); | |
1092 | return -EBADF; | |
1093 | } | |
1094 | ||
1095 | #if WATCH_BUF | |
cfd43c02 | 1096 | DRM_INFO("%s: sw_finish %d (%p %zd)\n", |
673a394b EA |
1097 | __func__, args->handle, obj, obj->size); |
1098 | #endif | |
23010e43 | 1099 | obj_priv = to_intel_bo(obj); |
673a394b EA |
1100 | |
1101 | /* Pinned buffers may be scanout, so flush the cache */ | |
e47c68e9 EA |
1102 | if (obj_priv->pin_count) |
1103 | i915_gem_object_flush_cpu_write_domain(obj); | |
1104 | ||
673a394b EA |
1105 | drm_gem_object_unreference(obj); |
1106 | mutex_unlock(&dev->struct_mutex); | |
1107 | return ret; | |
1108 | } | |
1109 | ||
1110 | /** | |
1111 | * Maps the contents of an object, returning the address it is mapped | |
1112 | * into. | |
1113 | * | |
1114 | * While the mapping holds a reference on the contents of the object, it doesn't | |
1115 | * imply a ref on the object itself. | |
1116 | */ | |
1117 | int | |
1118 | i915_gem_mmap_ioctl(struct drm_device *dev, void *data, | |
1119 | struct drm_file *file_priv) | |
1120 | { | |
1121 | struct drm_i915_gem_mmap *args = data; | |
1122 | struct drm_gem_object *obj; | |
1123 | loff_t offset; | |
1124 | unsigned long addr; | |
1125 | ||
1126 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1127 | return -ENODEV; | |
1128 | ||
1129 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
1130 | if (obj == NULL) | |
1131 | return -EBADF; | |
1132 | ||
1133 | offset = args->offset; | |
1134 | ||
1135 | down_write(¤t->mm->mmap_sem); | |
1136 | addr = do_mmap(obj->filp, 0, args->size, | |
1137 | PROT_READ | PROT_WRITE, MAP_SHARED, | |
1138 | args->offset); | |
1139 | up_write(¤t->mm->mmap_sem); | |
bc9025bd | 1140 | drm_gem_object_unreference_unlocked(obj); |
673a394b EA |
1141 | if (IS_ERR((void *)addr)) |
1142 | return addr; | |
1143 | ||
1144 | args->addr_ptr = (uint64_t) addr; | |
1145 | ||
1146 | return 0; | |
1147 | } | |
1148 | ||
de151cf6 JB |
1149 | /** |
1150 | * i915_gem_fault - fault a page into the GTT | |
1151 | * vma: VMA in question | |
1152 | * vmf: fault info | |
1153 | * | |
1154 | * The fault handler is set up by drm_gem_mmap() when a object is GTT mapped | |
1155 | * from userspace. The fault handler takes care of binding the object to | |
1156 | * the GTT (if needed), allocating and programming a fence register (again, | |
1157 | * only if needed based on whether the old reg is still valid or the object | |
1158 | * is tiled) and inserting a new PTE into the faulting process. | |
1159 | * | |
1160 | * Note that the faulting process may involve evicting existing objects | |
1161 | * from the GTT and/or fence registers to make room. So performance may | |
1162 | * suffer if the GTT working set is large or there are few fence registers | |
1163 | * left. | |
1164 | */ | |
1165 | int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
1166 | { | |
1167 | struct drm_gem_object *obj = vma->vm_private_data; | |
1168 | struct drm_device *dev = obj->dev; | |
1169 | struct drm_i915_private *dev_priv = dev->dev_private; | |
23010e43 | 1170 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
1171 | pgoff_t page_offset; |
1172 | unsigned long pfn; | |
1173 | int ret = 0; | |
0f973f27 | 1174 | bool write = !!(vmf->flags & FAULT_FLAG_WRITE); |
de151cf6 JB |
1175 | |
1176 | /* We don't use vmf->pgoff since that has the fake offset */ | |
1177 | page_offset = ((unsigned long)vmf->virtual_address - vma->vm_start) >> | |
1178 | PAGE_SHIFT; | |
1179 | ||
1180 | /* Now bind it into the GTT if needed */ | |
1181 | mutex_lock(&dev->struct_mutex); | |
1182 | if (!obj_priv->gtt_space) { | |
e67b8ce1 | 1183 | ret = i915_gem_object_bind_to_gtt(obj, 0); |
c715089f CW |
1184 | if (ret) |
1185 | goto unlock; | |
07f4f3e8 | 1186 | |
14b60391 | 1187 | list_add_tail(&obj_priv->list, &dev_priv->mm.inactive_list); |
07f4f3e8 KH |
1188 | |
1189 | ret = i915_gem_object_set_to_gtt_domain(obj, write); | |
c715089f CW |
1190 | if (ret) |
1191 | goto unlock; | |
de151cf6 JB |
1192 | } |
1193 | ||
1194 | /* Need a new fence register? */ | |
a09ba7fa | 1195 | if (obj_priv->tiling_mode != I915_TILING_NONE) { |
8c4b8c3f | 1196 | ret = i915_gem_object_get_fence_reg(obj); |
c715089f CW |
1197 | if (ret) |
1198 | goto unlock; | |
d9ddcb96 | 1199 | } |
de151cf6 JB |
1200 | |
1201 | pfn = ((dev->agp->base + obj_priv->gtt_offset) >> PAGE_SHIFT) + | |
1202 | page_offset; | |
1203 | ||
1204 | /* Finally, remap it using the new GTT offset */ | |
1205 | ret = vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, pfn); | |
c715089f | 1206 | unlock: |
de151cf6 JB |
1207 | mutex_unlock(&dev->struct_mutex); |
1208 | ||
1209 | switch (ret) { | |
c715089f CW |
1210 | case 0: |
1211 | case -ERESTARTSYS: | |
1212 | return VM_FAULT_NOPAGE; | |
de151cf6 JB |
1213 | case -ENOMEM: |
1214 | case -EAGAIN: | |
1215 | return VM_FAULT_OOM; | |
de151cf6 | 1216 | default: |
c715089f | 1217 | return VM_FAULT_SIGBUS; |
de151cf6 JB |
1218 | } |
1219 | } | |
1220 | ||
1221 | /** | |
1222 | * i915_gem_create_mmap_offset - create a fake mmap offset for an object | |
1223 | * @obj: obj in question | |
1224 | * | |
1225 | * GEM memory mapping works by handing back to userspace a fake mmap offset | |
1226 | * it can use in a subsequent mmap(2) call. The DRM core code then looks | |
1227 | * up the object based on the offset and sets up the various memory mapping | |
1228 | * structures. | |
1229 | * | |
1230 | * This routine allocates and attaches a fake offset for @obj. | |
1231 | */ | |
1232 | static int | |
1233 | i915_gem_create_mmap_offset(struct drm_gem_object *obj) | |
1234 | { | |
1235 | struct drm_device *dev = obj->dev; | |
1236 | struct drm_gem_mm *mm = dev->mm_private; | |
23010e43 | 1237 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 | 1238 | struct drm_map_list *list; |
f77d390c | 1239 | struct drm_local_map *map; |
de151cf6 JB |
1240 | int ret = 0; |
1241 | ||
1242 | /* Set the object up for mmap'ing */ | |
1243 | list = &obj->map_list; | |
9a298b2a | 1244 | list->map = kzalloc(sizeof(struct drm_map_list), GFP_KERNEL); |
de151cf6 JB |
1245 | if (!list->map) |
1246 | return -ENOMEM; | |
1247 | ||
1248 | map = list->map; | |
1249 | map->type = _DRM_GEM; | |
1250 | map->size = obj->size; | |
1251 | map->handle = obj; | |
1252 | ||
1253 | /* Get a DRM GEM mmap offset allocated... */ | |
1254 | list->file_offset_node = drm_mm_search_free(&mm->offset_manager, | |
1255 | obj->size / PAGE_SIZE, 0, 0); | |
1256 | if (!list->file_offset_node) { | |
1257 | DRM_ERROR("failed to allocate offset for bo %d\n", obj->name); | |
1258 | ret = -ENOMEM; | |
1259 | goto out_free_list; | |
1260 | } | |
1261 | ||
1262 | list->file_offset_node = drm_mm_get_block(list->file_offset_node, | |
1263 | obj->size / PAGE_SIZE, 0); | |
1264 | if (!list->file_offset_node) { | |
1265 | ret = -ENOMEM; | |
1266 | goto out_free_list; | |
1267 | } | |
1268 | ||
1269 | list->hash.key = list->file_offset_node->start; | |
1270 | if (drm_ht_insert_item(&mm->offset_hash, &list->hash)) { | |
1271 | DRM_ERROR("failed to add to map hash\n"); | |
5618ca6a | 1272 | ret = -ENOMEM; |
de151cf6 JB |
1273 | goto out_free_mm; |
1274 | } | |
1275 | ||
1276 | /* By now we should be all set, any drm_mmap request on the offset | |
1277 | * below will get to our mmap & fault handler */ | |
1278 | obj_priv->mmap_offset = ((uint64_t) list->hash.key) << PAGE_SHIFT; | |
1279 | ||
1280 | return 0; | |
1281 | ||
1282 | out_free_mm: | |
1283 | drm_mm_put_block(list->file_offset_node); | |
1284 | out_free_list: | |
9a298b2a | 1285 | kfree(list->map); |
de151cf6 JB |
1286 | |
1287 | return ret; | |
1288 | } | |
1289 | ||
901782b2 CW |
1290 | /** |
1291 | * i915_gem_release_mmap - remove physical page mappings | |
1292 | * @obj: obj in question | |
1293 | * | |
af901ca1 | 1294 | * Preserve the reservation of the mmapping with the DRM core code, but |
901782b2 CW |
1295 | * relinquish ownership of the pages back to the system. |
1296 | * | |
1297 | * It is vital that we remove the page mapping if we have mapped a tiled | |
1298 | * object through the GTT and then lose the fence register due to | |
1299 | * resource pressure. Similarly if the object has been moved out of the | |
1300 | * aperture, than pages mapped into userspace must be revoked. Removing the | |
1301 | * mapping will then trigger a page fault on the next user access, allowing | |
1302 | * fixup by i915_gem_fault(). | |
1303 | */ | |
d05ca301 | 1304 | void |
901782b2 CW |
1305 | i915_gem_release_mmap(struct drm_gem_object *obj) |
1306 | { | |
1307 | struct drm_device *dev = obj->dev; | |
23010e43 | 1308 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
901782b2 CW |
1309 | |
1310 | if (dev->dev_mapping) | |
1311 | unmap_mapping_range(dev->dev_mapping, | |
1312 | obj_priv->mmap_offset, obj->size, 1); | |
1313 | } | |
1314 | ||
ab00b3e5 JB |
1315 | static void |
1316 | i915_gem_free_mmap_offset(struct drm_gem_object *obj) | |
1317 | { | |
1318 | struct drm_device *dev = obj->dev; | |
23010e43 | 1319 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
ab00b3e5 JB |
1320 | struct drm_gem_mm *mm = dev->mm_private; |
1321 | struct drm_map_list *list; | |
1322 | ||
1323 | list = &obj->map_list; | |
1324 | drm_ht_remove_item(&mm->offset_hash, &list->hash); | |
1325 | ||
1326 | if (list->file_offset_node) { | |
1327 | drm_mm_put_block(list->file_offset_node); | |
1328 | list->file_offset_node = NULL; | |
1329 | } | |
1330 | ||
1331 | if (list->map) { | |
9a298b2a | 1332 | kfree(list->map); |
ab00b3e5 JB |
1333 | list->map = NULL; |
1334 | } | |
1335 | ||
1336 | obj_priv->mmap_offset = 0; | |
1337 | } | |
1338 | ||
de151cf6 JB |
1339 | /** |
1340 | * i915_gem_get_gtt_alignment - return required GTT alignment for an object | |
1341 | * @obj: object to check | |
1342 | * | |
1343 | * Return the required GTT alignment for an object, taking into account | |
1344 | * potential fence register mapping if needed. | |
1345 | */ | |
1346 | static uint32_t | |
1347 | i915_gem_get_gtt_alignment(struct drm_gem_object *obj) | |
1348 | { | |
1349 | struct drm_device *dev = obj->dev; | |
23010e43 | 1350 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
1351 | int start, i; |
1352 | ||
1353 | /* | |
1354 | * Minimum alignment is 4k (GTT page size), but might be greater | |
1355 | * if a fence register is needed for the object. | |
1356 | */ | |
1357 | if (IS_I965G(dev) || obj_priv->tiling_mode == I915_TILING_NONE) | |
1358 | return 4096; | |
1359 | ||
1360 | /* | |
1361 | * Previous chips need to be aligned to the size of the smallest | |
1362 | * fence register that can contain the object. | |
1363 | */ | |
1364 | if (IS_I9XX(dev)) | |
1365 | start = 1024*1024; | |
1366 | else | |
1367 | start = 512*1024; | |
1368 | ||
1369 | for (i = start; i < obj->size; i <<= 1) | |
1370 | ; | |
1371 | ||
1372 | return i; | |
1373 | } | |
1374 | ||
1375 | /** | |
1376 | * i915_gem_mmap_gtt_ioctl - prepare an object for GTT mmap'ing | |
1377 | * @dev: DRM device | |
1378 | * @data: GTT mapping ioctl data | |
1379 | * @file_priv: GEM object info | |
1380 | * | |
1381 | * Simply returns the fake offset to userspace so it can mmap it. | |
1382 | * The mmap call will end up in drm_gem_mmap(), which will set things | |
1383 | * up so we can get faults in the handler above. | |
1384 | * | |
1385 | * The fault handler will take care of binding the object into the GTT | |
1386 | * (since it may have been evicted to make room for something), allocating | |
1387 | * a fence register, and mapping the appropriate aperture address into | |
1388 | * userspace. | |
1389 | */ | |
1390 | int | |
1391 | i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data, | |
1392 | struct drm_file *file_priv) | |
1393 | { | |
1394 | struct drm_i915_gem_mmap_gtt *args = data; | |
1395 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1396 | struct drm_gem_object *obj; | |
1397 | struct drm_i915_gem_object *obj_priv; | |
1398 | int ret; | |
1399 | ||
1400 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1401 | return -ENODEV; | |
1402 | ||
1403 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
1404 | if (obj == NULL) | |
1405 | return -EBADF; | |
1406 | ||
1407 | mutex_lock(&dev->struct_mutex); | |
1408 | ||
23010e43 | 1409 | obj_priv = to_intel_bo(obj); |
de151cf6 | 1410 | |
ab18282d CW |
1411 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
1412 | DRM_ERROR("Attempting to mmap a purgeable buffer\n"); | |
1413 | drm_gem_object_unreference(obj); | |
1414 | mutex_unlock(&dev->struct_mutex); | |
1415 | return -EINVAL; | |
1416 | } | |
1417 | ||
1418 | ||
de151cf6 JB |
1419 | if (!obj_priv->mmap_offset) { |
1420 | ret = i915_gem_create_mmap_offset(obj); | |
13af1062 CW |
1421 | if (ret) { |
1422 | drm_gem_object_unreference(obj); | |
1423 | mutex_unlock(&dev->struct_mutex); | |
de151cf6 | 1424 | return ret; |
13af1062 | 1425 | } |
de151cf6 JB |
1426 | } |
1427 | ||
1428 | args->offset = obj_priv->mmap_offset; | |
1429 | ||
de151cf6 JB |
1430 | /* |
1431 | * Pull it into the GTT so that we have a page list (makes the | |
1432 | * initial fault faster and any subsequent flushing possible). | |
1433 | */ | |
1434 | if (!obj_priv->agp_mem) { | |
e67b8ce1 | 1435 | ret = i915_gem_object_bind_to_gtt(obj, 0); |
de151cf6 JB |
1436 | if (ret) { |
1437 | drm_gem_object_unreference(obj); | |
1438 | mutex_unlock(&dev->struct_mutex); | |
1439 | return ret; | |
1440 | } | |
14b60391 | 1441 | list_add_tail(&obj_priv->list, &dev_priv->mm.inactive_list); |
de151cf6 JB |
1442 | } |
1443 | ||
1444 | drm_gem_object_unreference(obj); | |
1445 | mutex_unlock(&dev->struct_mutex); | |
1446 | ||
1447 | return 0; | |
1448 | } | |
1449 | ||
6911a9b8 | 1450 | void |
856fa198 | 1451 | i915_gem_object_put_pages(struct drm_gem_object *obj) |
673a394b | 1452 | { |
23010e43 | 1453 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
1454 | int page_count = obj->size / PAGE_SIZE; |
1455 | int i; | |
1456 | ||
856fa198 | 1457 | BUG_ON(obj_priv->pages_refcount == 0); |
bb6baf76 | 1458 | BUG_ON(obj_priv->madv == __I915_MADV_PURGED); |
673a394b | 1459 | |
856fa198 EA |
1460 | if (--obj_priv->pages_refcount != 0) |
1461 | return; | |
673a394b | 1462 | |
280b713b EA |
1463 | if (obj_priv->tiling_mode != I915_TILING_NONE) |
1464 | i915_gem_object_save_bit_17_swizzle(obj); | |
1465 | ||
3ef94daa | 1466 | if (obj_priv->madv == I915_MADV_DONTNEED) |
13a05fd9 | 1467 | obj_priv->dirty = 0; |
3ef94daa CW |
1468 | |
1469 | for (i = 0; i < page_count; i++) { | |
3ef94daa CW |
1470 | if (obj_priv->dirty) |
1471 | set_page_dirty(obj_priv->pages[i]); | |
1472 | ||
1473 | if (obj_priv->madv == I915_MADV_WILLNEED) | |
856fa198 | 1474 | mark_page_accessed(obj_priv->pages[i]); |
3ef94daa CW |
1475 | |
1476 | page_cache_release(obj_priv->pages[i]); | |
1477 | } | |
673a394b EA |
1478 | obj_priv->dirty = 0; |
1479 | ||
8e7d2b2c | 1480 | drm_free_large(obj_priv->pages); |
856fa198 | 1481 | obj_priv->pages = NULL; |
673a394b EA |
1482 | } |
1483 | ||
1484 | static void | |
ce44b0ea | 1485 | i915_gem_object_move_to_active(struct drm_gem_object *obj, uint32_t seqno) |
673a394b EA |
1486 | { |
1487 | struct drm_device *dev = obj->dev; | |
1488 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 1489 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
1490 | |
1491 | /* Add a reference if we're newly entering the active list. */ | |
1492 | if (!obj_priv->active) { | |
1493 | drm_gem_object_reference(obj); | |
1494 | obj_priv->active = 1; | |
1495 | } | |
1496 | /* Move from whatever list we were on to the tail of execution. */ | |
5e118f41 | 1497 | spin_lock(&dev_priv->mm.active_list_lock); |
673a394b EA |
1498 | list_move_tail(&obj_priv->list, |
1499 | &dev_priv->mm.active_list); | |
5e118f41 | 1500 | spin_unlock(&dev_priv->mm.active_list_lock); |
ce44b0ea | 1501 | obj_priv->last_rendering_seqno = seqno; |
673a394b EA |
1502 | } |
1503 | ||
ce44b0ea EA |
1504 | static void |
1505 | i915_gem_object_move_to_flushing(struct drm_gem_object *obj) | |
1506 | { | |
1507 | struct drm_device *dev = obj->dev; | |
1508 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 1509 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
ce44b0ea EA |
1510 | |
1511 | BUG_ON(!obj_priv->active); | |
1512 | list_move_tail(&obj_priv->list, &dev_priv->mm.flushing_list); | |
1513 | obj_priv->last_rendering_seqno = 0; | |
1514 | } | |
673a394b | 1515 | |
963b4836 CW |
1516 | /* Immediately discard the backing storage */ |
1517 | static void | |
1518 | i915_gem_object_truncate(struct drm_gem_object *obj) | |
1519 | { | |
23010e43 | 1520 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
bb6baf76 | 1521 | struct inode *inode; |
963b4836 | 1522 | |
bb6baf76 CW |
1523 | inode = obj->filp->f_path.dentry->d_inode; |
1524 | if (inode->i_op->truncate) | |
1525 | inode->i_op->truncate (inode); | |
1526 | ||
1527 | obj_priv->madv = __I915_MADV_PURGED; | |
963b4836 CW |
1528 | } |
1529 | ||
1530 | static inline int | |
1531 | i915_gem_object_is_purgeable(struct drm_i915_gem_object *obj_priv) | |
1532 | { | |
1533 | return obj_priv->madv == I915_MADV_DONTNEED; | |
1534 | } | |
1535 | ||
673a394b EA |
1536 | static void |
1537 | i915_gem_object_move_to_inactive(struct drm_gem_object *obj) | |
1538 | { | |
1539 | struct drm_device *dev = obj->dev; | |
1540 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 1541 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
1542 | |
1543 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
1544 | if (obj_priv->pin_count != 0) | |
1545 | list_del_init(&obj_priv->list); | |
1546 | else | |
1547 | list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list); | |
1548 | ||
99fcb766 DV |
1549 | BUG_ON(!list_empty(&obj_priv->gpu_write_list)); |
1550 | ||
ce44b0ea | 1551 | obj_priv->last_rendering_seqno = 0; |
673a394b EA |
1552 | if (obj_priv->active) { |
1553 | obj_priv->active = 0; | |
1554 | drm_gem_object_unreference(obj); | |
1555 | } | |
1556 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
1557 | } | |
1558 | ||
63560396 DV |
1559 | static void |
1560 | i915_gem_process_flushing_list(struct drm_device *dev, | |
1561 | uint32_t flush_domains, uint32_t seqno) | |
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) { | |
1569 | struct drm_gem_object *obj = obj_priv->obj; | |
1570 | ||
1571 | if ((obj->write_domain & flush_domains) == | |
1572 | obj->write_domain) { | |
1573 | uint32_t old_write_domain = obj->write_domain; | |
1574 | ||
1575 | obj->write_domain = 0; | |
1576 | list_del_init(&obj_priv->gpu_write_list); | |
1577 | i915_gem_object_move_to_active(obj, seqno); | |
1578 | ||
1579 | /* update the fence lru list */ | |
1580 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) | |
1581 | list_move_tail(&obj_priv->fence_list, | |
1582 | &dev_priv->mm.fence_list); | |
1583 | ||
1584 | trace_i915_gem_object_change_domain(obj, | |
1585 | obj->read_domains, | |
1586 | old_write_domain); | |
1587 | } | |
1588 | } | |
1589 | } | |
1590 | ||
673a394b EA |
1591 | /** |
1592 | * Creates a new sequence number, emitting a write of it to the status page | |
1593 | * plus an interrupt, which will trigger i915_user_interrupt_handler. | |
1594 | * | |
1595 | * Must be called with struct_lock held. | |
1596 | * | |
1597 | * Returned sequence numbers are nonzero on success. | |
1598 | */ | |
5a5a0c64 | 1599 | uint32_t |
b962442e EA |
1600 | i915_add_request(struct drm_device *dev, struct drm_file *file_priv, |
1601 | uint32_t flush_domains) | |
673a394b EA |
1602 | { |
1603 | drm_i915_private_t *dev_priv = dev->dev_private; | |
b962442e | 1604 | struct drm_i915_file_private *i915_file_priv = NULL; |
673a394b EA |
1605 | struct drm_i915_gem_request *request; |
1606 | uint32_t seqno; | |
1607 | int was_empty; | |
1608 | RING_LOCALS; | |
1609 | ||
b962442e EA |
1610 | if (file_priv != NULL) |
1611 | i915_file_priv = file_priv->driver_priv; | |
1612 | ||
9a298b2a | 1613 | request = kzalloc(sizeof(*request), GFP_KERNEL); |
673a394b EA |
1614 | if (request == NULL) |
1615 | return 0; | |
1616 | ||
1617 | /* Grab the seqno we're going to make this request be, and bump the | |
1618 | * next (skipping 0 so it can be the reserved no-seqno value). | |
1619 | */ | |
1620 | seqno = dev_priv->mm.next_gem_seqno; | |
1621 | dev_priv->mm.next_gem_seqno++; | |
1622 | if (dev_priv->mm.next_gem_seqno == 0) | |
1623 | dev_priv->mm.next_gem_seqno++; | |
1624 | ||
1625 | BEGIN_LP_RING(4); | |
1626 | OUT_RING(MI_STORE_DWORD_INDEX); | |
1627 | OUT_RING(I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT); | |
1628 | OUT_RING(seqno); | |
1629 | ||
1630 | OUT_RING(MI_USER_INTERRUPT); | |
1631 | ADVANCE_LP_RING(); | |
1632 | ||
44d98a61 | 1633 | DRM_DEBUG_DRIVER("%d\n", seqno); |
673a394b EA |
1634 | |
1635 | request->seqno = seqno; | |
1636 | request->emitted_jiffies = jiffies; | |
673a394b EA |
1637 | was_empty = list_empty(&dev_priv->mm.request_list); |
1638 | list_add_tail(&request->list, &dev_priv->mm.request_list); | |
b962442e EA |
1639 | if (i915_file_priv) { |
1640 | list_add_tail(&request->client_list, | |
1641 | &i915_file_priv->mm.request_list); | |
1642 | } else { | |
1643 | INIT_LIST_HEAD(&request->client_list); | |
1644 | } | |
673a394b | 1645 | |
ce44b0ea EA |
1646 | /* Associate any objects on the flushing list matching the write |
1647 | * domain we're flushing with our flush. | |
1648 | */ | |
63560396 DV |
1649 | if (flush_domains != 0) |
1650 | i915_gem_process_flushing_list(dev, flush_domains, seqno); | |
ce44b0ea | 1651 | |
f65d9421 BG |
1652 | if (!dev_priv->mm.suspended) { |
1653 | mod_timer(&dev_priv->hangcheck_timer, jiffies + DRM_I915_HANGCHECK_PERIOD); | |
1654 | if (was_empty) | |
1655 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, HZ); | |
1656 | } | |
673a394b EA |
1657 | return seqno; |
1658 | } | |
1659 | ||
1660 | /** | |
1661 | * Command execution barrier | |
1662 | * | |
1663 | * Ensures that all commands in the ring are finished | |
1664 | * before signalling the CPU | |
1665 | */ | |
3043c60c | 1666 | static uint32_t |
673a394b EA |
1667 | i915_retire_commands(struct drm_device *dev) |
1668 | { | |
1669 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1670 | uint32_t cmd = MI_FLUSH | MI_NO_WRITE_FLUSH; | |
1671 | uint32_t flush_domains = 0; | |
1672 | RING_LOCALS; | |
1673 | ||
1674 | /* The sampler always gets flushed on i965 (sigh) */ | |
1675 | if (IS_I965G(dev)) | |
1676 | flush_domains |= I915_GEM_DOMAIN_SAMPLER; | |
1677 | BEGIN_LP_RING(2); | |
1678 | OUT_RING(cmd); | |
1679 | OUT_RING(0); /* noop */ | |
1680 | ADVANCE_LP_RING(); | |
1681 | return flush_domains; | |
1682 | } | |
1683 | ||
1684 | /** | |
1685 | * Moves buffers associated only with the given active seqno from the active | |
1686 | * to inactive list, potentially freeing them. | |
1687 | */ | |
1688 | static void | |
1689 | i915_gem_retire_request(struct drm_device *dev, | |
1690 | struct drm_i915_gem_request *request) | |
1691 | { | |
1692 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1693 | ||
1c5d22f7 CW |
1694 | trace_i915_gem_request_retire(dev, request->seqno); |
1695 | ||
673a394b EA |
1696 | /* Move any buffers on the active list that are no longer referenced |
1697 | * by the ringbuffer to the flushing/inactive lists as appropriate. | |
1698 | */ | |
5e118f41 | 1699 | spin_lock(&dev_priv->mm.active_list_lock); |
673a394b EA |
1700 | while (!list_empty(&dev_priv->mm.active_list)) { |
1701 | struct drm_gem_object *obj; | |
1702 | struct drm_i915_gem_object *obj_priv; | |
1703 | ||
1704 | obj_priv = list_first_entry(&dev_priv->mm.active_list, | |
1705 | struct drm_i915_gem_object, | |
1706 | list); | |
1707 | obj = obj_priv->obj; | |
1708 | ||
1709 | /* If the seqno being retired doesn't match the oldest in the | |
1710 | * list, then the oldest in the list must still be newer than | |
1711 | * this seqno. | |
1712 | */ | |
1713 | if (obj_priv->last_rendering_seqno != request->seqno) | |
5e118f41 | 1714 | goto out; |
de151cf6 | 1715 | |
673a394b EA |
1716 | #if WATCH_LRU |
1717 | DRM_INFO("%s: retire %d moves to inactive list %p\n", | |
1718 | __func__, request->seqno, obj); | |
1719 | #endif | |
1720 | ||
ce44b0ea EA |
1721 | if (obj->write_domain != 0) |
1722 | i915_gem_object_move_to_flushing(obj); | |
68c84342 SL |
1723 | else { |
1724 | /* Take a reference on the object so it won't be | |
1725 | * freed while the spinlock is held. The list | |
1726 | * protection for this spinlock is safe when breaking | |
1727 | * the lock like this since the next thing we do | |
1728 | * is just get the head of the list again. | |
1729 | */ | |
1730 | drm_gem_object_reference(obj); | |
673a394b | 1731 | i915_gem_object_move_to_inactive(obj); |
68c84342 SL |
1732 | spin_unlock(&dev_priv->mm.active_list_lock); |
1733 | drm_gem_object_unreference(obj); | |
1734 | spin_lock(&dev_priv->mm.active_list_lock); | |
1735 | } | |
673a394b | 1736 | } |
5e118f41 CW |
1737 | out: |
1738 | spin_unlock(&dev_priv->mm.active_list_lock); | |
673a394b EA |
1739 | } |
1740 | ||
1741 | /** | |
1742 | * Returns true if seq1 is later than seq2. | |
1743 | */ | |
22be1724 | 1744 | bool |
673a394b EA |
1745 | i915_seqno_passed(uint32_t seq1, uint32_t seq2) |
1746 | { | |
1747 | return (int32_t)(seq1 - seq2) >= 0; | |
1748 | } | |
1749 | ||
1750 | uint32_t | |
1751 | i915_get_gem_seqno(struct drm_device *dev) | |
1752 | { | |
1753 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1754 | ||
1755 | return READ_HWSP(dev_priv, I915_GEM_HWS_INDEX); | |
1756 | } | |
1757 | ||
1758 | /** | |
1759 | * This function clears the request list as sequence numbers are passed. | |
1760 | */ | |
1761 | void | |
1762 | i915_gem_retire_requests(struct drm_device *dev) | |
1763 | { | |
1764 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1765 | uint32_t seqno; | |
1766 | ||
9d34e5db | 1767 | if (!dev_priv->hw_status_page || list_empty(&dev_priv->mm.request_list)) |
6c0594a3 KW |
1768 | return; |
1769 | ||
673a394b EA |
1770 | seqno = i915_get_gem_seqno(dev); |
1771 | ||
1772 | while (!list_empty(&dev_priv->mm.request_list)) { | |
1773 | struct drm_i915_gem_request *request; | |
1774 | uint32_t retiring_seqno; | |
1775 | ||
1776 | request = list_first_entry(&dev_priv->mm.request_list, | |
1777 | struct drm_i915_gem_request, | |
1778 | list); | |
1779 | retiring_seqno = request->seqno; | |
1780 | ||
1781 | if (i915_seqno_passed(seqno, retiring_seqno) || | |
ba1234d1 | 1782 | atomic_read(&dev_priv->mm.wedged)) { |
673a394b EA |
1783 | i915_gem_retire_request(dev, request); |
1784 | ||
1785 | list_del(&request->list); | |
b962442e | 1786 | list_del(&request->client_list); |
9a298b2a | 1787 | kfree(request); |
673a394b EA |
1788 | } else |
1789 | break; | |
1790 | } | |
9d34e5db CW |
1791 | |
1792 | if (unlikely (dev_priv->trace_irq_seqno && | |
1793 | i915_seqno_passed(dev_priv->trace_irq_seqno, seqno))) { | |
1794 | i915_user_irq_put(dev); | |
1795 | dev_priv->trace_irq_seqno = 0; | |
1796 | } | |
673a394b EA |
1797 | } |
1798 | ||
1799 | void | |
1800 | i915_gem_retire_work_handler(struct work_struct *work) | |
1801 | { | |
1802 | drm_i915_private_t *dev_priv; | |
1803 | struct drm_device *dev; | |
1804 | ||
1805 | dev_priv = container_of(work, drm_i915_private_t, | |
1806 | mm.retire_work.work); | |
1807 | dev = dev_priv->dev; | |
1808 | ||
1809 | mutex_lock(&dev->struct_mutex); | |
1810 | i915_gem_retire_requests(dev); | |
6dbe2772 KP |
1811 | if (!dev_priv->mm.suspended && |
1812 | !list_empty(&dev_priv->mm.request_list)) | |
9c9fe1f8 | 1813 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, HZ); |
673a394b EA |
1814 | mutex_unlock(&dev->struct_mutex); |
1815 | } | |
1816 | ||
5a5a0c64 | 1817 | int |
48764bf4 | 1818 | i915_do_wait_request(struct drm_device *dev, uint32_t seqno, int interruptible) |
673a394b EA |
1819 | { |
1820 | drm_i915_private_t *dev_priv = dev->dev_private; | |
802c7eb6 | 1821 | u32 ier; |
673a394b EA |
1822 | int ret = 0; |
1823 | ||
1824 | BUG_ON(seqno == 0); | |
1825 | ||
ba1234d1 | 1826 | if (atomic_read(&dev_priv->mm.wedged)) |
ffed1d09 BG |
1827 | return -EIO; |
1828 | ||
673a394b | 1829 | if (!i915_seqno_passed(i915_get_gem_seqno(dev), seqno)) { |
bad720ff | 1830 | if (HAS_PCH_SPLIT(dev)) |
036a4a7d ZW |
1831 | ier = I915_READ(DEIER) | I915_READ(GTIER); |
1832 | else | |
1833 | ier = I915_READ(IER); | |
802c7eb6 JB |
1834 | if (!ier) { |
1835 | DRM_ERROR("something (likely vbetool) disabled " | |
1836 | "interrupts, re-enabling\n"); | |
1837 | i915_driver_irq_preinstall(dev); | |
1838 | i915_driver_irq_postinstall(dev); | |
1839 | } | |
1840 | ||
1c5d22f7 CW |
1841 | trace_i915_gem_request_wait_begin(dev, seqno); |
1842 | ||
673a394b EA |
1843 | dev_priv->mm.waiting_gem_seqno = seqno; |
1844 | i915_user_irq_get(dev); | |
48764bf4 DV |
1845 | if (interruptible) |
1846 | ret = wait_event_interruptible(dev_priv->irq_queue, | |
1847 | i915_seqno_passed(i915_get_gem_seqno(dev), seqno) || | |
1848 | atomic_read(&dev_priv->mm.wedged)); | |
1849 | else | |
1850 | wait_event(dev_priv->irq_queue, | |
1851 | i915_seqno_passed(i915_get_gem_seqno(dev), seqno) || | |
1852 | atomic_read(&dev_priv->mm.wedged)); | |
1853 | ||
673a394b EA |
1854 | i915_user_irq_put(dev); |
1855 | dev_priv->mm.waiting_gem_seqno = 0; | |
1c5d22f7 CW |
1856 | |
1857 | trace_i915_gem_request_wait_end(dev, seqno); | |
673a394b | 1858 | } |
ba1234d1 | 1859 | if (atomic_read(&dev_priv->mm.wedged)) |
673a394b EA |
1860 | ret = -EIO; |
1861 | ||
1862 | if (ret && ret != -ERESTARTSYS) | |
1863 | DRM_ERROR("%s returns %d (awaiting %d at %d)\n", | |
1864 | __func__, ret, seqno, i915_get_gem_seqno(dev)); | |
1865 | ||
1866 | /* Directly dispatch request retiring. While we have the work queue | |
1867 | * to handle this, the waiter on a request often wants an associated | |
1868 | * buffer to have made it to the inactive list, and we would need | |
1869 | * a separate wait queue to handle that. | |
1870 | */ | |
1871 | if (ret == 0) | |
1872 | i915_gem_retire_requests(dev); | |
1873 | ||
1874 | return ret; | |
1875 | } | |
1876 | ||
48764bf4 DV |
1877 | /** |
1878 | * Waits for a sequence number to be signaled, and cleans up the | |
1879 | * request and object lists appropriately for that event. | |
1880 | */ | |
1881 | static int | |
1882 | i915_wait_request(struct drm_device *dev, uint32_t seqno) | |
1883 | { | |
1884 | return i915_do_wait_request(dev, seqno, 1); | |
1885 | } | |
1886 | ||
673a394b EA |
1887 | static void |
1888 | i915_gem_flush(struct drm_device *dev, | |
1889 | uint32_t invalidate_domains, | |
1890 | uint32_t flush_domains) | |
1891 | { | |
1892 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1893 | uint32_t cmd; | |
1894 | RING_LOCALS; | |
1895 | ||
1896 | #if WATCH_EXEC | |
1897 | DRM_INFO("%s: invalidate %08x flush %08x\n", __func__, | |
1898 | invalidate_domains, flush_domains); | |
1899 | #endif | |
1c5d22f7 CW |
1900 | trace_i915_gem_request_flush(dev, dev_priv->mm.next_gem_seqno, |
1901 | invalidate_domains, flush_domains); | |
673a394b EA |
1902 | |
1903 | if (flush_domains & I915_GEM_DOMAIN_CPU) | |
1904 | drm_agp_chipset_flush(dev); | |
1905 | ||
21d509e3 | 1906 | if ((invalidate_domains | flush_domains) & I915_GEM_GPU_DOMAINS) { |
673a394b EA |
1907 | /* |
1908 | * read/write caches: | |
1909 | * | |
1910 | * I915_GEM_DOMAIN_RENDER is always invalidated, but is | |
1911 | * only flushed if MI_NO_WRITE_FLUSH is unset. On 965, it is | |
1912 | * also flushed at 2d versus 3d pipeline switches. | |
1913 | * | |
1914 | * read-only caches: | |
1915 | * | |
1916 | * I915_GEM_DOMAIN_SAMPLER is flushed on pre-965 if | |
1917 | * MI_READ_FLUSH is set, and is always flushed on 965. | |
1918 | * | |
1919 | * I915_GEM_DOMAIN_COMMAND may not exist? | |
1920 | * | |
1921 | * I915_GEM_DOMAIN_INSTRUCTION, which exists on 965, is | |
1922 | * invalidated when MI_EXE_FLUSH is set. | |
1923 | * | |
1924 | * I915_GEM_DOMAIN_VERTEX, which exists on 965, is | |
1925 | * invalidated with every MI_FLUSH. | |
1926 | * | |
1927 | * TLBs: | |
1928 | * | |
1929 | * On 965, TLBs associated with I915_GEM_DOMAIN_COMMAND | |
1930 | * and I915_GEM_DOMAIN_CPU in are invalidated at PTE write and | |
1931 | * I915_GEM_DOMAIN_RENDER and I915_GEM_DOMAIN_SAMPLER | |
1932 | * are flushed at any MI_FLUSH. | |
1933 | */ | |
1934 | ||
1935 | cmd = MI_FLUSH | MI_NO_WRITE_FLUSH; | |
1936 | if ((invalidate_domains|flush_domains) & | |
1937 | I915_GEM_DOMAIN_RENDER) | |
1938 | cmd &= ~MI_NO_WRITE_FLUSH; | |
1939 | if (!IS_I965G(dev)) { | |
1940 | /* | |
1941 | * On the 965, the sampler cache always gets flushed | |
1942 | * and this bit is reserved. | |
1943 | */ | |
1944 | if (invalidate_domains & I915_GEM_DOMAIN_SAMPLER) | |
1945 | cmd |= MI_READ_FLUSH; | |
1946 | } | |
1947 | if (invalidate_domains & I915_GEM_DOMAIN_INSTRUCTION) | |
1948 | cmd |= MI_EXE_FLUSH; | |
1949 | ||
1950 | #if WATCH_EXEC | |
1951 | DRM_INFO("%s: queue flush %08x to ring\n", __func__, cmd); | |
1952 | #endif | |
1953 | BEGIN_LP_RING(2); | |
1954 | OUT_RING(cmd); | |
48764bf4 | 1955 | OUT_RING(MI_NOOP); |
673a394b EA |
1956 | ADVANCE_LP_RING(); |
1957 | } | |
1958 | } | |
1959 | ||
1960 | /** | |
1961 | * Ensures that all rendering to the object has completed and the object is | |
1962 | * safe to unbind from the GTT or access from the CPU. | |
1963 | */ | |
1964 | static int | |
1965 | i915_gem_object_wait_rendering(struct drm_gem_object *obj) | |
1966 | { | |
1967 | struct drm_device *dev = obj->dev; | |
23010e43 | 1968 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
1969 | int ret; |
1970 | ||
e47c68e9 EA |
1971 | /* This function only exists to support waiting for existing rendering, |
1972 | * not for emitting required flushes. | |
673a394b | 1973 | */ |
e47c68e9 | 1974 | BUG_ON((obj->write_domain & I915_GEM_GPU_DOMAINS) != 0); |
673a394b EA |
1975 | |
1976 | /* If there is rendering queued on the buffer being evicted, wait for | |
1977 | * it. | |
1978 | */ | |
1979 | if (obj_priv->active) { | |
1980 | #if WATCH_BUF | |
1981 | DRM_INFO("%s: object %p wait for seqno %08x\n", | |
1982 | __func__, obj, obj_priv->last_rendering_seqno); | |
1983 | #endif | |
1984 | ret = i915_wait_request(dev, obj_priv->last_rendering_seqno); | |
1985 | if (ret != 0) | |
1986 | return ret; | |
1987 | } | |
1988 | ||
1989 | return 0; | |
1990 | } | |
1991 | ||
1992 | /** | |
1993 | * Unbinds an object from the GTT aperture. | |
1994 | */ | |
0f973f27 | 1995 | int |
673a394b EA |
1996 | i915_gem_object_unbind(struct drm_gem_object *obj) |
1997 | { | |
1998 | struct drm_device *dev = obj->dev; | |
4a87b8ca | 1999 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 2000 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
2001 | int ret = 0; |
2002 | ||
2003 | #if WATCH_BUF | |
2004 | DRM_INFO("%s:%d %p\n", __func__, __LINE__, obj); | |
2005 | DRM_INFO("gtt_space %p\n", obj_priv->gtt_space); | |
2006 | #endif | |
2007 | if (obj_priv->gtt_space == NULL) | |
2008 | return 0; | |
2009 | ||
2010 | if (obj_priv->pin_count != 0) { | |
2011 | DRM_ERROR("Attempting to unbind pinned buffer\n"); | |
2012 | return -EINVAL; | |
2013 | } | |
2014 | ||
5323fd04 EA |
2015 | /* blow away mappings if mapped through GTT */ |
2016 | i915_gem_release_mmap(obj); | |
2017 | ||
673a394b EA |
2018 | /* Move the object to the CPU domain to ensure that |
2019 | * any possible CPU writes while it's not in the GTT | |
2020 | * are flushed when we go to remap it. This will | |
2021 | * also ensure that all pending GPU writes are finished | |
2022 | * before we unbind. | |
2023 | */ | |
e47c68e9 | 2024 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
673a394b | 2025 | if (ret) { |
e47c68e9 EA |
2026 | if (ret != -ERESTARTSYS) |
2027 | DRM_ERROR("set_domain failed: %d\n", ret); | |
673a394b EA |
2028 | return ret; |
2029 | } | |
2030 | ||
5323fd04 EA |
2031 | BUG_ON(obj_priv->active); |
2032 | ||
96b47b65 DV |
2033 | /* release the fence reg _after_ flushing */ |
2034 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) | |
2035 | i915_gem_clear_fence_reg(obj); | |
2036 | ||
673a394b EA |
2037 | if (obj_priv->agp_mem != NULL) { |
2038 | drm_unbind_agp(obj_priv->agp_mem); | |
2039 | drm_free_agp(obj_priv->agp_mem, obj->size / PAGE_SIZE); | |
2040 | obj_priv->agp_mem = NULL; | |
2041 | } | |
2042 | ||
856fa198 | 2043 | i915_gem_object_put_pages(obj); |
a32808c0 | 2044 | BUG_ON(obj_priv->pages_refcount); |
673a394b EA |
2045 | |
2046 | if (obj_priv->gtt_space) { | |
2047 | atomic_dec(&dev->gtt_count); | |
2048 | atomic_sub(obj->size, &dev->gtt_memory); | |
2049 | ||
2050 | drm_mm_put_block(obj_priv->gtt_space); | |
2051 | obj_priv->gtt_space = NULL; | |
2052 | } | |
2053 | ||
2054 | /* Remove ourselves from the LRU list if present. */ | |
4a87b8ca | 2055 | spin_lock(&dev_priv->mm.active_list_lock); |
673a394b EA |
2056 | if (!list_empty(&obj_priv->list)) |
2057 | list_del_init(&obj_priv->list); | |
4a87b8ca | 2058 | spin_unlock(&dev_priv->mm.active_list_lock); |
673a394b | 2059 | |
963b4836 CW |
2060 | if (i915_gem_object_is_purgeable(obj_priv)) |
2061 | i915_gem_object_truncate(obj); | |
2062 | ||
1c5d22f7 CW |
2063 | trace_i915_gem_object_unbind(obj); |
2064 | ||
673a394b EA |
2065 | return 0; |
2066 | } | |
2067 | ||
07f73f69 CW |
2068 | static struct drm_gem_object * |
2069 | i915_gem_find_inactive_object(struct drm_device *dev, int min_size) | |
2070 | { | |
2071 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2072 | struct drm_i915_gem_object *obj_priv; | |
2073 | struct drm_gem_object *best = NULL; | |
2074 | struct drm_gem_object *first = NULL; | |
2075 | ||
2076 | /* Try to find the smallest clean object */ | |
2077 | list_for_each_entry(obj_priv, &dev_priv->mm.inactive_list, list) { | |
2078 | struct drm_gem_object *obj = obj_priv->obj; | |
2079 | if (obj->size >= min_size) { | |
963b4836 CW |
2080 | if ((!obj_priv->dirty || |
2081 | i915_gem_object_is_purgeable(obj_priv)) && | |
07f73f69 CW |
2082 | (!best || obj->size < best->size)) { |
2083 | best = obj; | |
2084 | if (best->size == min_size) | |
2085 | return best; | |
2086 | } | |
2087 | if (!first) | |
2088 | first = obj; | |
2089 | } | |
2090 | } | |
2091 | ||
2092 | return best ? best : first; | |
2093 | } | |
2094 | ||
4df2faf4 DV |
2095 | static int |
2096 | i915_gpu_idle(struct drm_device *dev) | |
2097 | { | |
2098 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2099 | bool lists_empty; | |
2100 | uint32_t seqno; | |
2101 | ||
2102 | spin_lock(&dev_priv->mm.active_list_lock); | |
2103 | lists_empty = list_empty(&dev_priv->mm.flushing_list) && | |
2104 | list_empty(&dev_priv->mm.active_list); | |
2105 | spin_unlock(&dev_priv->mm.active_list_lock); | |
2106 | ||
2107 | if (lists_empty) | |
2108 | return 0; | |
2109 | ||
2110 | /* Flush everything onto the inactive list. */ | |
2111 | i915_gem_flush(dev, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); | |
2112 | seqno = i915_add_request(dev, NULL, I915_GEM_GPU_DOMAINS); | |
2113 | if (seqno == 0) | |
2114 | return -ENOMEM; | |
2115 | ||
2116 | return i915_wait_request(dev, seqno); | |
2117 | } | |
2118 | ||
673a394b | 2119 | static int |
07f73f69 CW |
2120 | i915_gem_evict_everything(struct drm_device *dev) |
2121 | { | |
2122 | drm_i915_private_t *dev_priv = dev->dev_private; | |
07f73f69 CW |
2123 | int ret; |
2124 | bool lists_empty; | |
2125 | ||
07f73f69 CW |
2126 | spin_lock(&dev_priv->mm.active_list_lock); |
2127 | lists_empty = (list_empty(&dev_priv->mm.inactive_list) && | |
2128 | list_empty(&dev_priv->mm.flushing_list) && | |
2129 | list_empty(&dev_priv->mm.active_list)); | |
2130 | spin_unlock(&dev_priv->mm.active_list_lock); | |
2131 | ||
9731129c | 2132 | if (lists_empty) |
07f73f69 | 2133 | return -ENOSPC; |
07f73f69 CW |
2134 | |
2135 | /* Flush everything (on to the inactive lists) and evict */ | |
4df2faf4 | 2136 | ret = i915_gpu_idle(dev); |
07f73f69 CW |
2137 | if (ret) |
2138 | return ret; | |
2139 | ||
99fcb766 DV |
2140 | BUG_ON(!list_empty(&dev_priv->mm.flushing_list)); |
2141 | ||
ab5ee576 | 2142 | ret = i915_gem_evict_from_inactive_list(dev); |
07f73f69 CW |
2143 | if (ret) |
2144 | return ret; | |
2145 | ||
2146 | spin_lock(&dev_priv->mm.active_list_lock); | |
2147 | lists_empty = (list_empty(&dev_priv->mm.inactive_list) && | |
2148 | list_empty(&dev_priv->mm.flushing_list) && | |
2149 | list_empty(&dev_priv->mm.active_list)); | |
2150 | spin_unlock(&dev_priv->mm.active_list_lock); | |
2151 | BUG_ON(!lists_empty); | |
2152 | ||
2153 | return 0; | |
2154 | } | |
2155 | ||
673a394b | 2156 | static int |
07f73f69 | 2157 | i915_gem_evict_something(struct drm_device *dev, int min_size) |
673a394b EA |
2158 | { |
2159 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2160 | struct drm_gem_object *obj; | |
07f73f69 | 2161 | int ret; |
673a394b EA |
2162 | |
2163 | for (;;) { | |
07f73f69 CW |
2164 | i915_gem_retire_requests(dev); |
2165 | ||
673a394b EA |
2166 | /* If there's an inactive buffer available now, grab it |
2167 | * and be done. | |
2168 | */ | |
07f73f69 CW |
2169 | obj = i915_gem_find_inactive_object(dev, min_size); |
2170 | if (obj) { | |
2171 | struct drm_i915_gem_object *obj_priv; | |
2172 | ||
673a394b EA |
2173 | #if WATCH_LRU |
2174 | DRM_INFO("%s: evicting %p\n", __func__, obj); | |
2175 | #endif | |
23010e43 | 2176 | obj_priv = to_intel_bo(obj); |
07f73f69 | 2177 | BUG_ON(obj_priv->pin_count != 0); |
673a394b EA |
2178 | BUG_ON(obj_priv->active); |
2179 | ||
2180 | /* Wait on the rendering and unbind the buffer. */ | |
07f73f69 | 2181 | return i915_gem_object_unbind(obj); |
673a394b EA |
2182 | } |
2183 | ||
2184 | /* If we didn't get anything, but the ring is still processing | |
07f73f69 CW |
2185 | * things, wait for the next to finish and hopefully leave us |
2186 | * a buffer to evict. | |
673a394b EA |
2187 | */ |
2188 | if (!list_empty(&dev_priv->mm.request_list)) { | |
2189 | struct drm_i915_gem_request *request; | |
2190 | ||
2191 | request = list_first_entry(&dev_priv->mm.request_list, | |
2192 | struct drm_i915_gem_request, | |
2193 | list); | |
2194 | ||
2195 | ret = i915_wait_request(dev, request->seqno); | |
2196 | if (ret) | |
07f73f69 | 2197 | return ret; |
673a394b | 2198 | |
07f73f69 | 2199 | continue; |
673a394b EA |
2200 | } |
2201 | ||
2202 | /* If we didn't have anything on the request list but there | |
2203 | * are buffers awaiting a flush, emit one and try again. | |
2204 | * When we wait on it, those buffers waiting for that flush | |
2205 | * will get moved to inactive. | |
2206 | */ | |
2207 | if (!list_empty(&dev_priv->mm.flushing_list)) { | |
07f73f69 | 2208 | struct drm_i915_gem_object *obj_priv; |
673a394b | 2209 | |
9a1e2582 CW |
2210 | /* Find an object that we can immediately reuse */ |
2211 | list_for_each_entry(obj_priv, &dev_priv->mm.flushing_list, list) { | |
2212 | obj = obj_priv->obj; | |
2213 | if (obj->size >= min_size) | |
2214 | break; | |
673a394b | 2215 | |
9a1e2582 CW |
2216 | obj = NULL; |
2217 | } | |
673a394b | 2218 | |
9a1e2582 CW |
2219 | if (obj != NULL) { |
2220 | uint32_t seqno; | |
673a394b | 2221 | |
9a1e2582 CW |
2222 | i915_gem_flush(dev, |
2223 | obj->write_domain, | |
2224 | obj->write_domain); | |
2225 | seqno = i915_add_request(dev, NULL, obj->write_domain); | |
2226 | if (seqno == 0) | |
2227 | return -ENOMEM; | |
9a1e2582 CW |
2228 | continue; |
2229 | } | |
673a394b EA |
2230 | } |
2231 | ||
07f73f69 CW |
2232 | /* If we didn't do any of the above, there's no single buffer |
2233 | * large enough to swap out for the new one, so just evict | |
2234 | * everything and start again. (This should be rare.) | |
673a394b | 2235 | */ |
9731129c | 2236 | if (!list_empty (&dev_priv->mm.inactive_list)) |
ab5ee576 | 2237 | return i915_gem_evict_from_inactive_list(dev); |
9731129c | 2238 | else |
07f73f69 | 2239 | return i915_gem_evict_everything(dev); |
ac94a962 | 2240 | } |
ac94a962 KP |
2241 | } |
2242 | ||
6911a9b8 | 2243 | int |
4bdadb97 CW |
2244 | i915_gem_object_get_pages(struct drm_gem_object *obj, |
2245 | gfp_t gfpmask) | |
673a394b | 2246 | { |
23010e43 | 2247 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
2248 | int page_count, i; |
2249 | struct address_space *mapping; | |
2250 | struct inode *inode; | |
2251 | struct page *page; | |
673a394b | 2252 | |
856fa198 | 2253 | if (obj_priv->pages_refcount++ != 0) |
673a394b EA |
2254 | return 0; |
2255 | ||
2256 | /* Get the list of pages out of our struct file. They'll be pinned | |
2257 | * at this point until we release them. | |
2258 | */ | |
2259 | page_count = obj->size / PAGE_SIZE; | |
856fa198 | 2260 | BUG_ON(obj_priv->pages != NULL); |
8e7d2b2c | 2261 | obj_priv->pages = drm_calloc_large(page_count, sizeof(struct page *)); |
856fa198 | 2262 | if (obj_priv->pages == NULL) { |
856fa198 | 2263 | obj_priv->pages_refcount--; |
673a394b EA |
2264 | return -ENOMEM; |
2265 | } | |
2266 | ||
2267 | inode = obj->filp->f_path.dentry->d_inode; | |
2268 | mapping = inode->i_mapping; | |
2269 | for (i = 0; i < page_count; i++) { | |
4bdadb97 CW |
2270 | page = read_cache_page_gfp(mapping, i, |
2271 | mapping_gfp_mask (mapping) | | |
2272 | __GFP_COLD | | |
2273 | gfpmask); | |
1f2b1013 CW |
2274 | if (IS_ERR(page)) |
2275 | goto err_pages; | |
2276 | ||
856fa198 | 2277 | obj_priv->pages[i] = page; |
673a394b | 2278 | } |
280b713b EA |
2279 | |
2280 | if (obj_priv->tiling_mode != I915_TILING_NONE) | |
2281 | i915_gem_object_do_bit_17_swizzle(obj); | |
2282 | ||
673a394b | 2283 | return 0; |
1f2b1013 CW |
2284 | |
2285 | err_pages: | |
2286 | while (i--) | |
2287 | page_cache_release(obj_priv->pages[i]); | |
2288 | ||
2289 | drm_free_large(obj_priv->pages); | |
2290 | obj_priv->pages = NULL; | |
2291 | obj_priv->pages_refcount--; | |
2292 | return PTR_ERR(page); | |
673a394b EA |
2293 | } |
2294 | ||
4e901fdc EA |
2295 | static void sandybridge_write_fence_reg(struct drm_i915_fence_reg *reg) |
2296 | { | |
2297 | struct drm_gem_object *obj = reg->obj; | |
2298 | struct drm_device *dev = obj->dev; | |
2299 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2300 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
4e901fdc EA |
2301 | int regnum = obj_priv->fence_reg; |
2302 | uint64_t val; | |
2303 | ||
2304 | val = (uint64_t)((obj_priv->gtt_offset + obj->size - 4096) & | |
2305 | 0xfffff000) << 32; | |
2306 | val |= obj_priv->gtt_offset & 0xfffff000; | |
2307 | val |= (uint64_t)((obj_priv->stride / 128) - 1) << | |
2308 | SANDYBRIDGE_FENCE_PITCH_SHIFT; | |
2309 | ||
2310 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2311 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; | |
2312 | val |= I965_FENCE_REG_VALID; | |
2313 | ||
2314 | I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + (regnum * 8), val); | |
2315 | } | |
2316 | ||
de151cf6 JB |
2317 | static void i965_write_fence_reg(struct drm_i915_fence_reg *reg) |
2318 | { | |
2319 | struct drm_gem_object *obj = reg->obj; | |
2320 | struct drm_device *dev = obj->dev; | |
2321 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2322 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
2323 | int regnum = obj_priv->fence_reg; |
2324 | uint64_t val; | |
2325 | ||
2326 | val = (uint64_t)((obj_priv->gtt_offset + obj->size - 4096) & | |
2327 | 0xfffff000) << 32; | |
2328 | val |= obj_priv->gtt_offset & 0xfffff000; | |
2329 | val |= ((obj_priv->stride / 128) - 1) << I965_FENCE_PITCH_SHIFT; | |
2330 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2331 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; | |
2332 | val |= I965_FENCE_REG_VALID; | |
2333 | ||
2334 | I915_WRITE64(FENCE_REG_965_0 + (regnum * 8), val); | |
2335 | } | |
2336 | ||
2337 | static void i915_write_fence_reg(struct drm_i915_fence_reg *reg) | |
2338 | { | |
2339 | struct drm_gem_object *obj = reg->obj; | |
2340 | struct drm_device *dev = obj->dev; | |
2341 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2342 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 | 2343 | int regnum = obj_priv->fence_reg; |
0f973f27 | 2344 | int tile_width; |
dc529a4f | 2345 | uint32_t fence_reg, val; |
de151cf6 JB |
2346 | uint32_t pitch_val; |
2347 | ||
2348 | if ((obj_priv->gtt_offset & ~I915_FENCE_START_MASK) || | |
2349 | (obj_priv->gtt_offset & (obj->size - 1))) { | |
f06da264 | 2350 | WARN(1, "%s: object 0x%08x not 1M or size (0x%zx) aligned\n", |
0f973f27 | 2351 | __func__, obj_priv->gtt_offset, obj->size); |
de151cf6 JB |
2352 | return; |
2353 | } | |
2354 | ||
0f973f27 JB |
2355 | if (obj_priv->tiling_mode == I915_TILING_Y && |
2356 | HAS_128_BYTE_Y_TILING(dev)) | |
2357 | tile_width = 128; | |
de151cf6 | 2358 | else |
0f973f27 JB |
2359 | tile_width = 512; |
2360 | ||
2361 | /* Note: pitch better be a power of two tile widths */ | |
2362 | pitch_val = obj_priv->stride / tile_width; | |
2363 | pitch_val = ffs(pitch_val) - 1; | |
de151cf6 JB |
2364 | |
2365 | val = obj_priv->gtt_offset; | |
2366 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2367 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; | |
2368 | val |= I915_FENCE_SIZE_BITS(obj->size); | |
2369 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; | |
2370 | val |= I830_FENCE_REG_VALID; | |
2371 | ||
dc529a4f EA |
2372 | if (regnum < 8) |
2373 | fence_reg = FENCE_REG_830_0 + (regnum * 4); | |
2374 | else | |
2375 | fence_reg = FENCE_REG_945_8 + ((regnum - 8) * 4); | |
2376 | I915_WRITE(fence_reg, val); | |
de151cf6 JB |
2377 | } |
2378 | ||
2379 | static void i830_write_fence_reg(struct drm_i915_fence_reg *reg) | |
2380 | { | |
2381 | struct drm_gem_object *obj = reg->obj; | |
2382 | struct drm_device *dev = obj->dev; | |
2383 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2384 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
2385 | int regnum = obj_priv->fence_reg; |
2386 | uint32_t val; | |
2387 | uint32_t pitch_val; | |
8d7773a3 | 2388 | uint32_t fence_size_bits; |
de151cf6 | 2389 | |
8d7773a3 | 2390 | if ((obj_priv->gtt_offset & ~I830_FENCE_START_MASK) || |
de151cf6 | 2391 | (obj_priv->gtt_offset & (obj->size - 1))) { |
8d7773a3 | 2392 | WARN(1, "%s: object 0x%08x not 512K or size aligned\n", |
0f973f27 | 2393 | __func__, obj_priv->gtt_offset); |
de151cf6 JB |
2394 | return; |
2395 | } | |
2396 | ||
e76a16de EA |
2397 | pitch_val = obj_priv->stride / 128; |
2398 | pitch_val = ffs(pitch_val) - 1; | |
2399 | WARN_ON(pitch_val > I830_FENCE_MAX_PITCH_VAL); | |
2400 | ||
de151cf6 JB |
2401 | val = obj_priv->gtt_offset; |
2402 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2403 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; | |
8d7773a3 DV |
2404 | fence_size_bits = I830_FENCE_SIZE_BITS(obj->size); |
2405 | WARN_ON(fence_size_bits & ~0x00000f00); | |
2406 | val |= fence_size_bits; | |
de151cf6 JB |
2407 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; |
2408 | val |= I830_FENCE_REG_VALID; | |
2409 | ||
2410 | I915_WRITE(FENCE_REG_830_0 + (regnum * 4), val); | |
de151cf6 JB |
2411 | } |
2412 | ||
ae3db24a DV |
2413 | static int i915_find_fence_reg(struct drm_device *dev) |
2414 | { | |
2415 | struct drm_i915_fence_reg *reg = NULL; | |
2416 | struct drm_i915_gem_object *obj_priv = NULL; | |
2417 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2418 | struct drm_gem_object *obj = NULL; | |
2419 | int i, avail, ret; | |
2420 | ||
2421 | /* First try to find a free reg */ | |
2422 | avail = 0; | |
2423 | for (i = dev_priv->fence_reg_start; i < dev_priv->num_fence_regs; i++) { | |
2424 | reg = &dev_priv->fence_regs[i]; | |
2425 | if (!reg->obj) | |
2426 | return i; | |
2427 | ||
23010e43 | 2428 | obj_priv = to_intel_bo(reg->obj); |
ae3db24a DV |
2429 | if (!obj_priv->pin_count) |
2430 | avail++; | |
2431 | } | |
2432 | ||
2433 | if (avail == 0) | |
2434 | return -ENOSPC; | |
2435 | ||
2436 | /* None available, try to steal one or wait for a user to finish */ | |
2437 | i = I915_FENCE_REG_NONE; | |
2438 | list_for_each_entry(obj_priv, &dev_priv->mm.fence_list, | |
2439 | fence_list) { | |
2440 | obj = obj_priv->obj; | |
2441 | ||
2442 | if (obj_priv->pin_count) | |
2443 | continue; | |
2444 | ||
2445 | /* found one! */ | |
2446 | i = obj_priv->fence_reg; | |
2447 | break; | |
2448 | } | |
2449 | ||
2450 | BUG_ON(i == I915_FENCE_REG_NONE); | |
2451 | ||
2452 | /* We only have a reference on obj from the active list. put_fence_reg | |
2453 | * might drop that one, causing a use-after-free in it. So hold a | |
2454 | * private reference to obj like the other callers of put_fence_reg | |
2455 | * (set_tiling ioctl) do. */ | |
2456 | drm_gem_object_reference(obj); | |
2457 | ret = i915_gem_object_put_fence_reg(obj); | |
2458 | drm_gem_object_unreference(obj); | |
2459 | if (ret != 0) | |
2460 | return ret; | |
2461 | ||
2462 | return i; | |
2463 | } | |
2464 | ||
de151cf6 JB |
2465 | /** |
2466 | * i915_gem_object_get_fence_reg - set up a fence reg for an object | |
2467 | * @obj: object to map through a fence reg | |
2468 | * | |
2469 | * When mapping objects through the GTT, userspace wants to be able to write | |
2470 | * to them without having to worry about swizzling if the object is tiled. | |
2471 | * | |
2472 | * This function walks the fence regs looking for a free one for @obj, | |
2473 | * stealing one if it can't find any. | |
2474 | * | |
2475 | * It then sets up the reg based on the object's properties: address, pitch | |
2476 | * and tiling format. | |
2477 | */ | |
8c4b8c3f CW |
2478 | int |
2479 | i915_gem_object_get_fence_reg(struct drm_gem_object *obj) | |
de151cf6 JB |
2480 | { |
2481 | struct drm_device *dev = obj->dev; | |
79e53945 | 2482 | struct drm_i915_private *dev_priv = dev->dev_private; |
23010e43 | 2483 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 | 2484 | struct drm_i915_fence_reg *reg = NULL; |
ae3db24a | 2485 | int ret; |
de151cf6 | 2486 | |
a09ba7fa EA |
2487 | /* Just update our place in the LRU if our fence is getting used. */ |
2488 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) { | |
2489 | list_move_tail(&obj_priv->fence_list, &dev_priv->mm.fence_list); | |
2490 | return 0; | |
2491 | } | |
2492 | ||
de151cf6 JB |
2493 | switch (obj_priv->tiling_mode) { |
2494 | case I915_TILING_NONE: | |
2495 | WARN(1, "allocating a fence for non-tiled object?\n"); | |
2496 | break; | |
2497 | case I915_TILING_X: | |
0f973f27 JB |
2498 | if (!obj_priv->stride) |
2499 | return -EINVAL; | |
2500 | WARN((obj_priv->stride & (512 - 1)), | |
2501 | "object 0x%08x is X tiled but has non-512B pitch\n", | |
2502 | obj_priv->gtt_offset); | |
de151cf6 JB |
2503 | break; |
2504 | case I915_TILING_Y: | |
0f973f27 JB |
2505 | if (!obj_priv->stride) |
2506 | return -EINVAL; | |
2507 | WARN((obj_priv->stride & (128 - 1)), | |
2508 | "object 0x%08x is Y tiled but has non-128B pitch\n", | |
2509 | obj_priv->gtt_offset); | |
de151cf6 JB |
2510 | break; |
2511 | } | |
2512 | ||
ae3db24a DV |
2513 | ret = i915_find_fence_reg(dev); |
2514 | if (ret < 0) | |
2515 | return ret; | |
de151cf6 | 2516 | |
ae3db24a DV |
2517 | obj_priv->fence_reg = ret; |
2518 | reg = &dev_priv->fence_regs[obj_priv->fence_reg]; | |
a09ba7fa EA |
2519 | list_add_tail(&obj_priv->fence_list, &dev_priv->mm.fence_list); |
2520 | ||
de151cf6 JB |
2521 | reg->obj = obj; |
2522 | ||
4e901fdc EA |
2523 | if (IS_GEN6(dev)) |
2524 | sandybridge_write_fence_reg(reg); | |
2525 | else if (IS_I965G(dev)) | |
de151cf6 JB |
2526 | i965_write_fence_reg(reg); |
2527 | else if (IS_I9XX(dev)) | |
2528 | i915_write_fence_reg(reg); | |
2529 | else | |
2530 | i830_write_fence_reg(reg); | |
d9ddcb96 | 2531 | |
ae3db24a DV |
2532 | trace_i915_gem_object_get_fence(obj, obj_priv->fence_reg, |
2533 | obj_priv->tiling_mode); | |
1c5d22f7 | 2534 | |
d9ddcb96 | 2535 | return 0; |
de151cf6 JB |
2536 | } |
2537 | ||
2538 | /** | |
2539 | * i915_gem_clear_fence_reg - clear out fence register info | |
2540 | * @obj: object to clear | |
2541 | * | |
2542 | * Zeroes out the fence register itself and clears out the associated | |
2543 | * data structures in dev_priv and obj_priv. | |
2544 | */ | |
2545 | static void | |
2546 | i915_gem_clear_fence_reg(struct drm_gem_object *obj) | |
2547 | { | |
2548 | struct drm_device *dev = obj->dev; | |
79e53945 | 2549 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 2550 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 | 2551 | |
4e901fdc EA |
2552 | if (IS_GEN6(dev)) { |
2553 | I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + | |
2554 | (obj_priv->fence_reg * 8), 0); | |
2555 | } else if (IS_I965G(dev)) { | |
de151cf6 | 2556 | I915_WRITE64(FENCE_REG_965_0 + (obj_priv->fence_reg * 8), 0); |
4e901fdc | 2557 | } else { |
dc529a4f EA |
2558 | uint32_t fence_reg; |
2559 | ||
2560 | if (obj_priv->fence_reg < 8) | |
2561 | fence_reg = FENCE_REG_830_0 + obj_priv->fence_reg * 4; | |
2562 | else | |
2563 | fence_reg = FENCE_REG_945_8 + (obj_priv->fence_reg - | |
2564 | 8) * 4; | |
2565 | ||
2566 | I915_WRITE(fence_reg, 0); | |
2567 | } | |
de151cf6 JB |
2568 | |
2569 | dev_priv->fence_regs[obj_priv->fence_reg].obj = NULL; | |
2570 | obj_priv->fence_reg = I915_FENCE_REG_NONE; | |
a09ba7fa | 2571 | list_del_init(&obj_priv->fence_list); |
de151cf6 JB |
2572 | } |
2573 | ||
52dc7d32 CW |
2574 | /** |
2575 | * i915_gem_object_put_fence_reg - waits on outstanding fenced access | |
2576 | * to the buffer to finish, and then resets the fence register. | |
2577 | * @obj: tiled object holding a fence register. | |
2578 | * | |
2579 | * Zeroes out the fence register itself and clears out the associated | |
2580 | * data structures in dev_priv and obj_priv. | |
2581 | */ | |
2582 | int | |
2583 | i915_gem_object_put_fence_reg(struct drm_gem_object *obj) | |
2584 | { | |
2585 | struct drm_device *dev = obj->dev; | |
23010e43 | 2586 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
52dc7d32 CW |
2587 | |
2588 | if (obj_priv->fence_reg == I915_FENCE_REG_NONE) | |
2589 | return 0; | |
2590 | ||
10ae9bd2 DV |
2591 | /* If we've changed tiling, GTT-mappings of the object |
2592 | * need to re-fault to ensure that the correct fence register | |
2593 | * setup is in place. | |
2594 | */ | |
2595 | i915_gem_release_mmap(obj); | |
2596 | ||
52dc7d32 CW |
2597 | /* On the i915, GPU access to tiled buffers is via a fence, |
2598 | * therefore we must wait for any outstanding access to complete | |
2599 | * before clearing the fence. | |
2600 | */ | |
2601 | if (!IS_I965G(dev)) { | |
2602 | int ret; | |
2603 | ||
2604 | i915_gem_object_flush_gpu_write_domain(obj); | |
52dc7d32 CW |
2605 | ret = i915_gem_object_wait_rendering(obj); |
2606 | if (ret != 0) | |
2607 | return ret; | |
2608 | } | |
2609 | ||
4a726612 | 2610 | i915_gem_object_flush_gtt_write_domain(obj); |
52dc7d32 CW |
2611 | i915_gem_clear_fence_reg (obj); |
2612 | ||
2613 | return 0; | |
2614 | } | |
2615 | ||
673a394b EA |
2616 | /** |
2617 | * Finds free space in the GTT aperture and binds the object there. | |
2618 | */ | |
2619 | static int | |
2620 | i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment) | |
2621 | { | |
2622 | struct drm_device *dev = obj->dev; | |
2623 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2624 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b | 2625 | struct drm_mm_node *free_space; |
4bdadb97 | 2626 | gfp_t gfpmask = __GFP_NORETRY | __GFP_NOWARN; |
07f73f69 | 2627 | int ret; |
673a394b | 2628 | |
bb6baf76 | 2629 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
3ef94daa CW |
2630 | DRM_ERROR("Attempting to bind a purgeable object\n"); |
2631 | return -EINVAL; | |
2632 | } | |
2633 | ||
673a394b | 2634 | if (alignment == 0) |
0f973f27 | 2635 | alignment = i915_gem_get_gtt_alignment(obj); |
8d7773a3 | 2636 | if (alignment & (i915_gem_get_gtt_alignment(obj) - 1)) { |
673a394b EA |
2637 | DRM_ERROR("Invalid object alignment requested %u\n", alignment); |
2638 | return -EINVAL; | |
2639 | } | |
2640 | ||
2641 | search_free: | |
2642 | free_space = drm_mm_search_free(&dev_priv->mm.gtt_space, | |
2643 | obj->size, alignment, 0); | |
2644 | if (free_space != NULL) { | |
2645 | obj_priv->gtt_space = drm_mm_get_block(free_space, obj->size, | |
2646 | alignment); | |
2647 | if (obj_priv->gtt_space != NULL) { | |
2648 | obj_priv->gtt_space->private = obj; | |
2649 | obj_priv->gtt_offset = obj_priv->gtt_space->start; | |
2650 | } | |
2651 | } | |
2652 | if (obj_priv->gtt_space == NULL) { | |
2653 | /* If the gtt is empty and we're still having trouble | |
2654 | * fitting our object in, we're out of memory. | |
2655 | */ | |
2656 | #if WATCH_LRU | |
2657 | DRM_INFO("%s: GTT full, evicting something\n", __func__); | |
2658 | #endif | |
07f73f69 | 2659 | ret = i915_gem_evict_something(dev, obj->size); |
9731129c | 2660 | if (ret) |
673a394b | 2661 | return ret; |
9731129c | 2662 | |
673a394b EA |
2663 | goto search_free; |
2664 | } | |
2665 | ||
2666 | #if WATCH_BUF | |
cfd43c02 | 2667 | DRM_INFO("Binding object of size %zd at 0x%08x\n", |
673a394b EA |
2668 | obj->size, obj_priv->gtt_offset); |
2669 | #endif | |
4bdadb97 | 2670 | ret = i915_gem_object_get_pages(obj, gfpmask); |
673a394b EA |
2671 | if (ret) { |
2672 | drm_mm_put_block(obj_priv->gtt_space); | |
2673 | obj_priv->gtt_space = NULL; | |
07f73f69 CW |
2674 | |
2675 | if (ret == -ENOMEM) { | |
2676 | /* first try to clear up some space from the GTT */ | |
2677 | ret = i915_gem_evict_something(dev, obj->size); | |
2678 | if (ret) { | |
07f73f69 | 2679 | /* now try to shrink everyone else */ |
4bdadb97 CW |
2680 | if (gfpmask) { |
2681 | gfpmask = 0; | |
2682 | goto search_free; | |
07f73f69 CW |
2683 | } |
2684 | ||
2685 | return ret; | |
2686 | } | |
2687 | ||
2688 | goto search_free; | |
2689 | } | |
2690 | ||
673a394b EA |
2691 | return ret; |
2692 | } | |
2693 | ||
673a394b EA |
2694 | /* Create an AGP memory structure pointing at our pages, and bind it |
2695 | * into the GTT. | |
2696 | */ | |
2697 | obj_priv->agp_mem = drm_agp_bind_pages(dev, | |
856fa198 | 2698 | obj_priv->pages, |
07f73f69 | 2699 | obj->size >> PAGE_SHIFT, |
ba1eb1d8 KP |
2700 | obj_priv->gtt_offset, |
2701 | obj_priv->agp_type); | |
673a394b | 2702 | if (obj_priv->agp_mem == NULL) { |
856fa198 | 2703 | i915_gem_object_put_pages(obj); |
673a394b EA |
2704 | drm_mm_put_block(obj_priv->gtt_space); |
2705 | obj_priv->gtt_space = NULL; | |
07f73f69 CW |
2706 | |
2707 | ret = i915_gem_evict_something(dev, obj->size); | |
9731129c | 2708 | if (ret) |
07f73f69 | 2709 | return ret; |
07f73f69 CW |
2710 | |
2711 | goto search_free; | |
673a394b EA |
2712 | } |
2713 | atomic_inc(&dev->gtt_count); | |
2714 | atomic_add(obj->size, &dev->gtt_memory); | |
2715 | ||
2716 | /* Assert that the object is not currently in any GPU domain. As it | |
2717 | * wasn't in the GTT, there shouldn't be any way it could have been in | |
2718 | * a GPU cache | |
2719 | */ | |
21d509e3 CW |
2720 | BUG_ON(obj->read_domains & I915_GEM_GPU_DOMAINS); |
2721 | BUG_ON(obj->write_domain & I915_GEM_GPU_DOMAINS); | |
673a394b | 2722 | |
1c5d22f7 CW |
2723 | trace_i915_gem_object_bind(obj, obj_priv->gtt_offset); |
2724 | ||
673a394b EA |
2725 | return 0; |
2726 | } | |
2727 | ||
2728 | void | |
2729 | i915_gem_clflush_object(struct drm_gem_object *obj) | |
2730 | { | |
23010e43 | 2731 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
2732 | |
2733 | /* If we don't have a page list set up, then we're not pinned | |
2734 | * to GPU, and we can ignore the cache flush because it'll happen | |
2735 | * again at bind time. | |
2736 | */ | |
856fa198 | 2737 | if (obj_priv->pages == NULL) |
673a394b EA |
2738 | return; |
2739 | ||
1c5d22f7 | 2740 | trace_i915_gem_object_clflush(obj); |
cfa16a0d | 2741 | |
856fa198 | 2742 | drm_clflush_pages(obj_priv->pages, obj->size / PAGE_SIZE); |
673a394b EA |
2743 | } |
2744 | ||
e47c68e9 EA |
2745 | /** Flushes any GPU write domain for the object if it's dirty. */ |
2746 | static void | |
2747 | i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj) | |
2748 | { | |
2749 | struct drm_device *dev = obj->dev; | |
1c5d22f7 | 2750 | uint32_t old_write_domain; |
e47c68e9 EA |
2751 | |
2752 | if ((obj->write_domain & I915_GEM_GPU_DOMAINS) == 0) | |
2753 | return; | |
2754 | ||
2755 | /* Queue the GPU write cache flushing we need. */ | |
1c5d22f7 | 2756 | old_write_domain = obj->write_domain; |
e47c68e9 | 2757 | i915_gem_flush(dev, 0, obj->write_domain); |
922a2efc | 2758 | (void) i915_add_request(dev, NULL, obj->write_domain); |
99fcb766 | 2759 | BUG_ON(obj->write_domain); |
1c5d22f7 CW |
2760 | |
2761 | trace_i915_gem_object_change_domain(obj, | |
2762 | obj->read_domains, | |
2763 | old_write_domain); | |
e47c68e9 EA |
2764 | } |
2765 | ||
2766 | /** Flushes the GTT write domain for the object if it's dirty. */ | |
2767 | static void | |
2768 | i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj) | |
2769 | { | |
1c5d22f7 CW |
2770 | uint32_t old_write_domain; |
2771 | ||
e47c68e9 EA |
2772 | if (obj->write_domain != I915_GEM_DOMAIN_GTT) |
2773 | return; | |
2774 | ||
2775 | /* No actual flushing is required for the GTT write domain. Writes | |
2776 | * to it immediately go to main memory as far as we know, so there's | |
2777 | * no chipset flush. It also doesn't land in render cache. | |
2778 | */ | |
1c5d22f7 | 2779 | old_write_domain = obj->write_domain; |
e47c68e9 | 2780 | obj->write_domain = 0; |
1c5d22f7 CW |
2781 | |
2782 | trace_i915_gem_object_change_domain(obj, | |
2783 | obj->read_domains, | |
2784 | old_write_domain); | |
e47c68e9 EA |
2785 | } |
2786 | ||
2787 | /** Flushes the CPU write domain for the object if it's dirty. */ | |
2788 | static void | |
2789 | i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj) | |
2790 | { | |
2791 | struct drm_device *dev = obj->dev; | |
1c5d22f7 | 2792 | uint32_t old_write_domain; |
e47c68e9 EA |
2793 | |
2794 | if (obj->write_domain != I915_GEM_DOMAIN_CPU) | |
2795 | return; | |
2796 | ||
2797 | i915_gem_clflush_object(obj); | |
2798 | drm_agp_chipset_flush(dev); | |
1c5d22f7 | 2799 | old_write_domain = obj->write_domain; |
e47c68e9 | 2800 | obj->write_domain = 0; |
1c5d22f7 CW |
2801 | |
2802 | trace_i915_gem_object_change_domain(obj, | |
2803 | obj->read_domains, | |
2804 | old_write_domain); | |
e47c68e9 EA |
2805 | } |
2806 | ||
6b95a207 KH |
2807 | void |
2808 | i915_gem_object_flush_write_domain(struct drm_gem_object *obj) | |
2809 | { | |
2810 | switch (obj->write_domain) { | |
2811 | case I915_GEM_DOMAIN_GTT: | |
2812 | i915_gem_object_flush_gtt_write_domain(obj); | |
2813 | break; | |
2814 | case I915_GEM_DOMAIN_CPU: | |
2815 | i915_gem_object_flush_cpu_write_domain(obj); | |
2816 | break; | |
2817 | default: | |
2818 | i915_gem_object_flush_gpu_write_domain(obj); | |
2819 | break; | |
2820 | } | |
2821 | } | |
2822 | ||
2ef7eeaa EA |
2823 | /** |
2824 | * Moves a single object to the GTT read, and possibly write domain. | |
2825 | * | |
2826 | * This function returns when the move is complete, including waiting on | |
2827 | * flushes to occur. | |
2828 | */ | |
79e53945 | 2829 | int |
2ef7eeaa EA |
2830 | i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj, int write) |
2831 | { | |
23010e43 | 2832 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
1c5d22f7 | 2833 | uint32_t old_write_domain, old_read_domains; |
e47c68e9 | 2834 | int ret; |
2ef7eeaa | 2835 | |
02354392 EA |
2836 | /* Not valid to be called on unbound objects. */ |
2837 | if (obj_priv->gtt_space == NULL) | |
2838 | return -EINVAL; | |
2839 | ||
e47c68e9 EA |
2840 | i915_gem_object_flush_gpu_write_domain(obj); |
2841 | /* Wait on any GPU rendering and flushing to occur. */ | |
2842 | ret = i915_gem_object_wait_rendering(obj); | |
2843 | if (ret != 0) | |
2844 | return ret; | |
2845 | ||
1c5d22f7 CW |
2846 | old_write_domain = obj->write_domain; |
2847 | old_read_domains = obj->read_domains; | |
2848 | ||
e47c68e9 EA |
2849 | /* If we're writing through the GTT domain, then CPU and GPU caches |
2850 | * will need to be invalidated at next use. | |
2ef7eeaa | 2851 | */ |
e47c68e9 EA |
2852 | if (write) |
2853 | obj->read_domains &= I915_GEM_DOMAIN_GTT; | |
2ef7eeaa | 2854 | |
e47c68e9 | 2855 | i915_gem_object_flush_cpu_write_domain(obj); |
2ef7eeaa | 2856 | |
e47c68e9 EA |
2857 | /* It should now be out of any other write domains, and we can update |
2858 | * the domain values for our changes. | |
2859 | */ | |
2860 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_GTT) != 0); | |
2861 | obj->read_domains |= I915_GEM_DOMAIN_GTT; | |
2862 | if (write) { | |
2863 | obj->write_domain = I915_GEM_DOMAIN_GTT; | |
2864 | obj_priv->dirty = 1; | |
2ef7eeaa EA |
2865 | } |
2866 | ||
1c5d22f7 CW |
2867 | trace_i915_gem_object_change_domain(obj, |
2868 | old_read_domains, | |
2869 | old_write_domain); | |
2870 | ||
e47c68e9 EA |
2871 | return 0; |
2872 | } | |
2873 | ||
b9241ea3 ZW |
2874 | /* |
2875 | * Prepare buffer for display plane. Use uninterruptible for possible flush | |
2876 | * wait, as in modesetting process we're not supposed to be interrupted. | |
2877 | */ | |
2878 | int | |
2879 | i915_gem_object_set_to_display_plane(struct drm_gem_object *obj) | |
2880 | { | |
2881 | struct drm_device *dev = obj->dev; | |
23010e43 | 2882 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
b9241ea3 ZW |
2883 | uint32_t old_write_domain, old_read_domains; |
2884 | int ret; | |
2885 | ||
2886 | /* Not valid to be called on unbound objects. */ | |
2887 | if (obj_priv->gtt_space == NULL) | |
2888 | return -EINVAL; | |
2889 | ||
2890 | i915_gem_object_flush_gpu_write_domain(obj); | |
2891 | ||
2892 | /* Wait on any GPU rendering and flushing to occur. */ | |
2893 | if (obj_priv->active) { | |
2894 | #if WATCH_BUF | |
2895 | DRM_INFO("%s: object %p wait for seqno %08x\n", | |
2896 | __func__, obj, obj_priv->last_rendering_seqno); | |
2897 | #endif | |
2898 | ret = i915_do_wait_request(dev, obj_priv->last_rendering_seqno, 0); | |
2899 | if (ret != 0) | |
2900 | return ret; | |
2901 | } | |
2902 | ||
2903 | old_write_domain = obj->write_domain; | |
2904 | old_read_domains = obj->read_domains; | |
2905 | ||
2906 | obj->read_domains &= I915_GEM_DOMAIN_GTT; | |
2907 | ||
2908 | i915_gem_object_flush_cpu_write_domain(obj); | |
2909 | ||
2910 | /* It should now be out of any other write domains, and we can update | |
2911 | * the domain values for our changes. | |
2912 | */ | |
2913 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_GTT) != 0); | |
2914 | obj->read_domains |= I915_GEM_DOMAIN_GTT; | |
2915 | obj->write_domain = I915_GEM_DOMAIN_GTT; | |
2916 | obj_priv->dirty = 1; | |
2917 | ||
2918 | trace_i915_gem_object_change_domain(obj, | |
2919 | old_read_domains, | |
2920 | old_write_domain); | |
2921 | ||
2922 | return 0; | |
2923 | } | |
2924 | ||
e47c68e9 EA |
2925 | /** |
2926 | * Moves a single object to the CPU read, and possibly write domain. | |
2927 | * | |
2928 | * This function returns when the move is complete, including waiting on | |
2929 | * flushes to occur. | |
2930 | */ | |
2931 | static int | |
2932 | i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, int write) | |
2933 | { | |
1c5d22f7 | 2934 | uint32_t old_write_domain, old_read_domains; |
e47c68e9 EA |
2935 | int ret; |
2936 | ||
2937 | i915_gem_object_flush_gpu_write_domain(obj); | |
2ef7eeaa | 2938 | /* Wait on any GPU rendering and flushing to occur. */ |
e47c68e9 EA |
2939 | ret = i915_gem_object_wait_rendering(obj); |
2940 | if (ret != 0) | |
2941 | return ret; | |
2ef7eeaa | 2942 | |
e47c68e9 | 2943 | i915_gem_object_flush_gtt_write_domain(obj); |
2ef7eeaa | 2944 | |
e47c68e9 EA |
2945 | /* If we have a partially-valid cache of the object in the CPU, |
2946 | * finish invalidating it and free the per-page flags. | |
2ef7eeaa | 2947 | */ |
e47c68e9 | 2948 | i915_gem_object_set_to_full_cpu_read_domain(obj); |
2ef7eeaa | 2949 | |
1c5d22f7 CW |
2950 | old_write_domain = obj->write_domain; |
2951 | old_read_domains = obj->read_domains; | |
2952 | ||
e47c68e9 EA |
2953 | /* Flush the CPU cache if it's still invalid. */ |
2954 | if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) { | |
2ef7eeaa | 2955 | i915_gem_clflush_object(obj); |
2ef7eeaa | 2956 | |
e47c68e9 | 2957 | obj->read_domains |= I915_GEM_DOMAIN_CPU; |
2ef7eeaa EA |
2958 | } |
2959 | ||
2960 | /* It should now be out of any other write domains, and we can update | |
2961 | * the domain values for our changes. | |
2962 | */ | |
e47c68e9 EA |
2963 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0); |
2964 | ||
2965 | /* If we're writing through the CPU, then the GPU read domains will | |
2966 | * need to be invalidated at next use. | |
2967 | */ | |
2968 | if (write) { | |
2969 | obj->read_domains &= I915_GEM_DOMAIN_CPU; | |
2970 | obj->write_domain = I915_GEM_DOMAIN_CPU; | |
2971 | } | |
2ef7eeaa | 2972 | |
1c5d22f7 CW |
2973 | trace_i915_gem_object_change_domain(obj, |
2974 | old_read_domains, | |
2975 | old_write_domain); | |
2976 | ||
2ef7eeaa EA |
2977 | return 0; |
2978 | } | |
2979 | ||
673a394b EA |
2980 | /* |
2981 | * Set the next domain for the specified object. This | |
2982 | * may not actually perform the necessary flushing/invaliding though, | |
2983 | * as that may want to be batched with other set_domain operations | |
2984 | * | |
2985 | * This is (we hope) the only really tricky part of gem. The goal | |
2986 | * is fairly simple -- track which caches hold bits of the object | |
2987 | * and make sure they remain coherent. A few concrete examples may | |
2988 | * help to explain how it works. For shorthand, we use the notation | |
2989 | * (read_domains, write_domain), e.g. (CPU, CPU) to indicate the | |
2990 | * a pair of read and write domain masks. | |
2991 | * | |
2992 | * Case 1: the batch buffer | |
2993 | * | |
2994 | * 1. Allocated | |
2995 | * 2. Written by CPU | |
2996 | * 3. Mapped to GTT | |
2997 | * 4. Read by GPU | |
2998 | * 5. Unmapped from GTT | |
2999 | * 6. Freed | |
3000 | * | |
3001 | * Let's take these a step at a time | |
3002 | * | |
3003 | * 1. Allocated | |
3004 | * Pages allocated from the kernel may still have | |
3005 | * cache contents, so we set them to (CPU, CPU) always. | |
3006 | * 2. Written by CPU (using pwrite) | |
3007 | * The pwrite function calls set_domain (CPU, CPU) and | |
3008 | * this function does nothing (as nothing changes) | |
3009 | * 3. Mapped by GTT | |
3010 | * This function asserts that the object is not | |
3011 | * currently in any GPU-based read or write domains | |
3012 | * 4. Read by GPU | |
3013 | * i915_gem_execbuffer calls set_domain (COMMAND, 0). | |
3014 | * As write_domain is zero, this function adds in the | |
3015 | * current read domains (CPU+COMMAND, 0). | |
3016 | * flush_domains is set to CPU. | |
3017 | * invalidate_domains is set to COMMAND | |
3018 | * clflush is run to get data out of the CPU caches | |
3019 | * then i915_dev_set_domain calls i915_gem_flush to | |
3020 | * emit an MI_FLUSH and drm_agp_chipset_flush | |
3021 | * 5. Unmapped from GTT | |
3022 | * i915_gem_object_unbind calls set_domain (CPU, CPU) | |
3023 | * flush_domains and invalidate_domains end up both zero | |
3024 | * so no flushing/invalidating happens | |
3025 | * 6. Freed | |
3026 | * yay, done | |
3027 | * | |
3028 | * Case 2: The shared render buffer | |
3029 | * | |
3030 | * 1. Allocated | |
3031 | * 2. Mapped to GTT | |
3032 | * 3. Read/written by GPU | |
3033 | * 4. set_domain to (CPU,CPU) | |
3034 | * 5. Read/written by CPU | |
3035 | * 6. Read/written by GPU | |
3036 | * | |
3037 | * 1. Allocated | |
3038 | * Same as last example, (CPU, CPU) | |
3039 | * 2. Mapped to GTT | |
3040 | * Nothing changes (assertions find that it is not in the GPU) | |
3041 | * 3. Read/written by GPU | |
3042 | * execbuffer calls set_domain (RENDER, RENDER) | |
3043 | * flush_domains gets CPU | |
3044 | * invalidate_domains gets GPU | |
3045 | * clflush (obj) | |
3046 | * MI_FLUSH and drm_agp_chipset_flush | |
3047 | * 4. set_domain (CPU, CPU) | |
3048 | * flush_domains gets GPU | |
3049 | * invalidate_domains gets CPU | |
3050 | * wait_rendering (obj) to make sure all drawing is complete. | |
3051 | * This will include an MI_FLUSH to get the data from GPU | |
3052 | * to memory | |
3053 | * clflush (obj) to invalidate the CPU cache | |
3054 | * Another MI_FLUSH in i915_gem_flush (eliminate this somehow?) | |
3055 | * 5. Read/written by CPU | |
3056 | * cache lines are loaded and dirtied | |
3057 | * 6. Read written by GPU | |
3058 | * Same as last GPU access | |
3059 | * | |
3060 | * Case 3: The constant buffer | |
3061 | * | |
3062 | * 1. Allocated | |
3063 | * 2. Written by CPU | |
3064 | * 3. Read by GPU | |
3065 | * 4. Updated (written) by CPU again | |
3066 | * 5. Read by GPU | |
3067 | * | |
3068 | * 1. Allocated | |
3069 | * (CPU, CPU) | |
3070 | * 2. Written by CPU | |
3071 | * (CPU, CPU) | |
3072 | * 3. Read by GPU | |
3073 | * (CPU+RENDER, 0) | |
3074 | * flush_domains = CPU | |
3075 | * invalidate_domains = RENDER | |
3076 | * clflush (obj) | |
3077 | * MI_FLUSH | |
3078 | * drm_agp_chipset_flush | |
3079 | * 4. Updated (written) by CPU again | |
3080 | * (CPU, CPU) | |
3081 | * flush_domains = 0 (no previous write domain) | |
3082 | * invalidate_domains = 0 (no new read domains) | |
3083 | * 5. Read by GPU | |
3084 | * (CPU+RENDER, 0) | |
3085 | * flush_domains = CPU | |
3086 | * invalidate_domains = RENDER | |
3087 | * clflush (obj) | |
3088 | * MI_FLUSH | |
3089 | * drm_agp_chipset_flush | |
3090 | */ | |
c0d90829 | 3091 | static void |
8b0e378a | 3092 | i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj) |
673a394b EA |
3093 | { |
3094 | struct drm_device *dev = obj->dev; | |
23010e43 | 3095 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
3096 | uint32_t invalidate_domains = 0; |
3097 | uint32_t flush_domains = 0; | |
1c5d22f7 | 3098 | uint32_t old_read_domains; |
e47c68e9 | 3099 | |
8b0e378a EA |
3100 | BUG_ON(obj->pending_read_domains & I915_GEM_DOMAIN_CPU); |
3101 | BUG_ON(obj->pending_write_domain == I915_GEM_DOMAIN_CPU); | |
673a394b | 3102 | |
652c393a JB |
3103 | intel_mark_busy(dev, obj); |
3104 | ||
673a394b EA |
3105 | #if WATCH_BUF |
3106 | DRM_INFO("%s: object %p read %08x -> %08x write %08x -> %08x\n", | |
3107 | __func__, obj, | |
8b0e378a EA |
3108 | obj->read_domains, obj->pending_read_domains, |
3109 | obj->write_domain, obj->pending_write_domain); | |
673a394b EA |
3110 | #endif |
3111 | /* | |
3112 | * If the object isn't moving to a new write domain, | |
3113 | * let the object stay in multiple read domains | |
3114 | */ | |
8b0e378a EA |
3115 | if (obj->pending_write_domain == 0) |
3116 | obj->pending_read_domains |= obj->read_domains; | |
673a394b EA |
3117 | else |
3118 | obj_priv->dirty = 1; | |
3119 | ||
3120 | /* | |
3121 | * Flush the current write domain if | |
3122 | * the new read domains don't match. Invalidate | |
3123 | * any read domains which differ from the old | |
3124 | * write domain | |
3125 | */ | |
8b0e378a EA |
3126 | if (obj->write_domain && |
3127 | obj->write_domain != obj->pending_read_domains) { | |
673a394b | 3128 | flush_domains |= obj->write_domain; |
8b0e378a EA |
3129 | invalidate_domains |= |
3130 | obj->pending_read_domains & ~obj->write_domain; | |
673a394b EA |
3131 | } |
3132 | /* | |
3133 | * Invalidate any read caches which may have | |
3134 | * stale data. That is, any new read domains. | |
3135 | */ | |
8b0e378a | 3136 | invalidate_domains |= obj->pending_read_domains & ~obj->read_domains; |
673a394b EA |
3137 | if ((flush_domains | invalidate_domains) & I915_GEM_DOMAIN_CPU) { |
3138 | #if WATCH_BUF | |
3139 | DRM_INFO("%s: CPU domain flush %08x invalidate %08x\n", | |
3140 | __func__, flush_domains, invalidate_domains); | |
3141 | #endif | |
673a394b EA |
3142 | i915_gem_clflush_object(obj); |
3143 | } | |
3144 | ||
1c5d22f7 CW |
3145 | old_read_domains = obj->read_domains; |
3146 | ||
efbeed96 EA |
3147 | /* The actual obj->write_domain will be updated with |
3148 | * pending_write_domain after we emit the accumulated flush for all | |
3149 | * of our domain changes in execbuffers (which clears objects' | |
3150 | * write_domains). So if we have a current write domain that we | |
3151 | * aren't changing, set pending_write_domain to that. | |
3152 | */ | |
3153 | if (flush_domains == 0 && obj->pending_write_domain == 0) | |
3154 | obj->pending_write_domain = obj->write_domain; | |
8b0e378a | 3155 | obj->read_domains = obj->pending_read_domains; |
673a394b EA |
3156 | |
3157 | dev->invalidate_domains |= invalidate_domains; | |
3158 | dev->flush_domains |= flush_domains; | |
3159 | #if WATCH_BUF | |
3160 | DRM_INFO("%s: read %08x write %08x invalidate %08x flush %08x\n", | |
3161 | __func__, | |
3162 | obj->read_domains, obj->write_domain, | |
3163 | dev->invalidate_domains, dev->flush_domains); | |
3164 | #endif | |
1c5d22f7 CW |
3165 | |
3166 | trace_i915_gem_object_change_domain(obj, | |
3167 | old_read_domains, | |
3168 | obj->write_domain); | |
673a394b EA |
3169 | } |
3170 | ||
3171 | /** | |
e47c68e9 | 3172 | * Moves the object from a partially CPU read to a full one. |
673a394b | 3173 | * |
e47c68e9 EA |
3174 | * Note that this only resolves i915_gem_object_set_cpu_read_domain_range(), |
3175 | * and doesn't handle transitioning from !(read_domains & I915_GEM_DOMAIN_CPU). | |
673a394b | 3176 | */ |
e47c68e9 EA |
3177 | static void |
3178 | i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj) | |
673a394b | 3179 | { |
23010e43 | 3180 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b | 3181 | |
e47c68e9 EA |
3182 | if (!obj_priv->page_cpu_valid) |
3183 | return; | |
3184 | ||
3185 | /* If we're partially in the CPU read domain, finish moving it in. | |
3186 | */ | |
3187 | if (obj->read_domains & I915_GEM_DOMAIN_CPU) { | |
3188 | int i; | |
3189 | ||
3190 | for (i = 0; i <= (obj->size - 1) / PAGE_SIZE; i++) { | |
3191 | if (obj_priv->page_cpu_valid[i]) | |
3192 | continue; | |
856fa198 | 3193 | drm_clflush_pages(obj_priv->pages + i, 1); |
e47c68e9 | 3194 | } |
e47c68e9 EA |
3195 | } |
3196 | ||
3197 | /* Free the page_cpu_valid mappings which are now stale, whether | |
3198 | * or not we've got I915_GEM_DOMAIN_CPU. | |
3199 | */ | |
9a298b2a | 3200 | kfree(obj_priv->page_cpu_valid); |
e47c68e9 EA |
3201 | obj_priv->page_cpu_valid = NULL; |
3202 | } | |
3203 | ||
3204 | /** | |
3205 | * Set the CPU read domain on a range of the object. | |
3206 | * | |
3207 | * The object ends up with I915_GEM_DOMAIN_CPU in its read flags although it's | |
3208 | * not entirely valid. The page_cpu_valid member of the object flags which | |
3209 | * pages have been flushed, and will be respected by | |
3210 | * i915_gem_object_set_to_cpu_domain() if it's called on to get a valid mapping | |
3211 | * of the whole object. | |
3212 | * | |
3213 | * This function returns when the move is complete, including waiting on | |
3214 | * flushes to occur. | |
3215 | */ | |
3216 | static int | |
3217 | i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj, | |
3218 | uint64_t offset, uint64_t size) | |
3219 | { | |
23010e43 | 3220 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
1c5d22f7 | 3221 | uint32_t old_read_domains; |
e47c68e9 | 3222 | int i, ret; |
673a394b | 3223 | |
e47c68e9 EA |
3224 | if (offset == 0 && size == obj->size) |
3225 | return i915_gem_object_set_to_cpu_domain(obj, 0); | |
673a394b | 3226 | |
e47c68e9 EA |
3227 | i915_gem_object_flush_gpu_write_domain(obj); |
3228 | /* Wait on any GPU rendering and flushing to occur. */ | |
6a47baa6 | 3229 | ret = i915_gem_object_wait_rendering(obj); |
e47c68e9 | 3230 | if (ret != 0) |
6a47baa6 | 3231 | return ret; |
e47c68e9 EA |
3232 | i915_gem_object_flush_gtt_write_domain(obj); |
3233 | ||
3234 | /* If we're already fully in the CPU read domain, we're done. */ | |
3235 | if (obj_priv->page_cpu_valid == NULL && | |
3236 | (obj->read_domains & I915_GEM_DOMAIN_CPU) != 0) | |
3237 | return 0; | |
673a394b | 3238 | |
e47c68e9 EA |
3239 | /* Otherwise, create/clear the per-page CPU read domain flag if we're |
3240 | * newly adding I915_GEM_DOMAIN_CPU | |
3241 | */ | |
673a394b | 3242 | if (obj_priv->page_cpu_valid == NULL) { |
9a298b2a EA |
3243 | obj_priv->page_cpu_valid = kzalloc(obj->size / PAGE_SIZE, |
3244 | GFP_KERNEL); | |
e47c68e9 EA |
3245 | if (obj_priv->page_cpu_valid == NULL) |
3246 | return -ENOMEM; | |
3247 | } else if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) | |
3248 | memset(obj_priv->page_cpu_valid, 0, obj->size / PAGE_SIZE); | |
673a394b EA |
3249 | |
3250 | /* Flush the cache on any pages that are still invalid from the CPU's | |
3251 | * perspective. | |
3252 | */ | |
e47c68e9 EA |
3253 | for (i = offset / PAGE_SIZE; i <= (offset + size - 1) / PAGE_SIZE; |
3254 | i++) { | |
673a394b EA |
3255 | if (obj_priv->page_cpu_valid[i]) |
3256 | continue; | |
3257 | ||
856fa198 | 3258 | drm_clflush_pages(obj_priv->pages + i, 1); |
673a394b EA |
3259 | |
3260 | obj_priv->page_cpu_valid[i] = 1; | |
3261 | } | |
3262 | ||
e47c68e9 EA |
3263 | /* It should now be out of any other write domains, and we can update |
3264 | * the domain values for our changes. | |
3265 | */ | |
3266 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0); | |
3267 | ||
1c5d22f7 | 3268 | old_read_domains = obj->read_domains; |
e47c68e9 EA |
3269 | obj->read_domains |= I915_GEM_DOMAIN_CPU; |
3270 | ||
1c5d22f7 CW |
3271 | trace_i915_gem_object_change_domain(obj, |
3272 | old_read_domains, | |
3273 | obj->write_domain); | |
3274 | ||
673a394b EA |
3275 | return 0; |
3276 | } | |
3277 | ||
673a394b EA |
3278 | /** |
3279 | * Pin an object to the GTT and evaluate the relocations landing in it. | |
3280 | */ | |
3281 | static int | |
3282 | i915_gem_object_pin_and_relocate(struct drm_gem_object *obj, | |
3283 | struct drm_file *file_priv, | |
76446cac | 3284 | struct drm_i915_gem_exec_object2 *entry, |
40a5f0de | 3285 | struct drm_i915_gem_relocation_entry *relocs) |
673a394b EA |
3286 | { |
3287 | struct drm_device *dev = obj->dev; | |
0839ccb8 | 3288 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 3289 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b | 3290 | int i, ret; |
0839ccb8 | 3291 | void __iomem *reloc_page; |
76446cac JB |
3292 | bool need_fence; |
3293 | ||
3294 | need_fence = entry->flags & EXEC_OBJECT_NEEDS_FENCE && | |
3295 | obj_priv->tiling_mode != I915_TILING_NONE; | |
3296 | ||
3297 | /* Check fence reg constraints and rebind if necessary */ | |
f590d279 OA |
3298 | if (need_fence && !i915_gem_object_fence_offset_ok(obj, |
3299 | obj_priv->tiling_mode)) | |
76446cac | 3300 | i915_gem_object_unbind(obj); |
673a394b EA |
3301 | |
3302 | /* Choose the GTT offset for our buffer and put it there. */ | |
3303 | ret = i915_gem_object_pin(obj, (uint32_t) entry->alignment); | |
3304 | if (ret) | |
3305 | return ret; | |
3306 | ||
76446cac JB |
3307 | /* |
3308 | * Pre-965 chips need a fence register set up in order to | |
3309 | * properly handle blits to/from tiled surfaces. | |
3310 | */ | |
3311 | if (need_fence) { | |
3312 | ret = i915_gem_object_get_fence_reg(obj); | |
3313 | if (ret != 0) { | |
3314 | if (ret != -EBUSY && ret != -ERESTARTSYS) | |
3315 | DRM_ERROR("Failure to install fence: %d\n", | |
3316 | ret); | |
3317 | i915_gem_object_unpin(obj); | |
3318 | return ret; | |
3319 | } | |
3320 | } | |
3321 | ||
673a394b EA |
3322 | entry->offset = obj_priv->gtt_offset; |
3323 | ||
673a394b EA |
3324 | /* Apply the relocations, using the GTT aperture to avoid cache |
3325 | * flushing requirements. | |
3326 | */ | |
3327 | for (i = 0; i < entry->relocation_count; i++) { | |
40a5f0de | 3328 | struct drm_i915_gem_relocation_entry *reloc= &relocs[i]; |
673a394b EA |
3329 | struct drm_gem_object *target_obj; |
3330 | struct drm_i915_gem_object *target_obj_priv; | |
3043c60c EA |
3331 | uint32_t reloc_val, reloc_offset; |
3332 | uint32_t __iomem *reloc_entry; | |
673a394b | 3333 | |
673a394b | 3334 | target_obj = drm_gem_object_lookup(obj->dev, file_priv, |
40a5f0de | 3335 | reloc->target_handle); |
673a394b EA |
3336 | if (target_obj == NULL) { |
3337 | i915_gem_object_unpin(obj); | |
3338 | return -EBADF; | |
3339 | } | |
23010e43 | 3340 | target_obj_priv = to_intel_bo(target_obj); |
673a394b | 3341 | |
8542a0bb CW |
3342 | #if WATCH_RELOC |
3343 | DRM_INFO("%s: obj %p offset %08x target %d " | |
3344 | "read %08x write %08x gtt %08x " | |
3345 | "presumed %08x delta %08x\n", | |
3346 | __func__, | |
3347 | obj, | |
3348 | (int) reloc->offset, | |
3349 | (int) reloc->target_handle, | |
3350 | (int) reloc->read_domains, | |
3351 | (int) reloc->write_domain, | |
3352 | (int) target_obj_priv->gtt_offset, | |
3353 | (int) reloc->presumed_offset, | |
3354 | reloc->delta); | |
3355 | #endif | |
3356 | ||
673a394b EA |
3357 | /* The target buffer should have appeared before us in the |
3358 | * exec_object list, so it should have a GTT space bound by now. | |
3359 | */ | |
3360 | if (target_obj_priv->gtt_space == NULL) { | |
3361 | DRM_ERROR("No GTT space found for object %d\n", | |
40a5f0de | 3362 | reloc->target_handle); |
673a394b EA |
3363 | drm_gem_object_unreference(target_obj); |
3364 | i915_gem_object_unpin(obj); | |
3365 | return -EINVAL; | |
3366 | } | |
3367 | ||
8542a0bb | 3368 | /* Validate that the target is in a valid r/w GPU domain */ |
16edd550 DV |
3369 | if (reloc->write_domain & (reloc->write_domain - 1)) { |
3370 | DRM_ERROR("reloc with multiple write domains: " | |
3371 | "obj %p target %d offset %d " | |
3372 | "read %08x write %08x", | |
3373 | obj, reloc->target_handle, | |
3374 | (int) reloc->offset, | |
3375 | reloc->read_domains, | |
3376 | reloc->write_domain); | |
3377 | return -EINVAL; | |
3378 | } | |
40a5f0de EA |
3379 | if (reloc->write_domain & I915_GEM_DOMAIN_CPU || |
3380 | reloc->read_domains & I915_GEM_DOMAIN_CPU) { | |
e47c68e9 EA |
3381 | DRM_ERROR("reloc with read/write CPU domains: " |
3382 | "obj %p target %d offset %d " | |
3383 | "read %08x write %08x", | |
40a5f0de EA |
3384 | obj, reloc->target_handle, |
3385 | (int) reloc->offset, | |
3386 | reloc->read_domains, | |
3387 | reloc->write_domain); | |
491152b8 CW |
3388 | drm_gem_object_unreference(target_obj); |
3389 | i915_gem_object_unpin(obj); | |
e47c68e9 EA |
3390 | return -EINVAL; |
3391 | } | |
40a5f0de EA |
3392 | if (reloc->write_domain && target_obj->pending_write_domain && |
3393 | reloc->write_domain != target_obj->pending_write_domain) { | |
673a394b EA |
3394 | DRM_ERROR("Write domain conflict: " |
3395 | "obj %p target %d offset %d " | |
3396 | "new %08x old %08x\n", | |
40a5f0de EA |
3397 | obj, reloc->target_handle, |
3398 | (int) reloc->offset, | |
3399 | reloc->write_domain, | |
673a394b EA |
3400 | target_obj->pending_write_domain); |
3401 | drm_gem_object_unreference(target_obj); | |
3402 | i915_gem_object_unpin(obj); | |
3403 | return -EINVAL; | |
3404 | } | |
3405 | ||
40a5f0de EA |
3406 | target_obj->pending_read_domains |= reloc->read_domains; |
3407 | target_obj->pending_write_domain |= reloc->write_domain; | |
673a394b EA |
3408 | |
3409 | /* If the relocation already has the right value in it, no | |
3410 | * more work needs to be done. | |
3411 | */ | |
40a5f0de | 3412 | if (target_obj_priv->gtt_offset == reloc->presumed_offset) { |
673a394b EA |
3413 | drm_gem_object_unreference(target_obj); |
3414 | continue; | |
3415 | } | |
3416 | ||
8542a0bb CW |
3417 | /* Check that the relocation address is valid... */ |
3418 | if (reloc->offset > obj->size - 4) { | |
3419 | DRM_ERROR("Relocation beyond object bounds: " | |
3420 | "obj %p target %d offset %d size %d.\n", | |
3421 | obj, reloc->target_handle, | |
3422 | (int) reloc->offset, (int) obj->size); | |
3423 | drm_gem_object_unreference(target_obj); | |
3424 | i915_gem_object_unpin(obj); | |
3425 | return -EINVAL; | |
3426 | } | |
3427 | if (reloc->offset & 3) { | |
3428 | DRM_ERROR("Relocation not 4-byte aligned: " | |
3429 | "obj %p target %d offset %d.\n", | |
3430 | obj, reloc->target_handle, | |
3431 | (int) reloc->offset); | |
3432 | drm_gem_object_unreference(target_obj); | |
3433 | i915_gem_object_unpin(obj); | |
3434 | return -EINVAL; | |
3435 | } | |
3436 | ||
3437 | /* and points to somewhere within the target object. */ | |
3438 | if (reloc->delta >= target_obj->size) { | |
3439 | DRM_ERROR("Relocation beyond target object bounds: " | |
3440 | "obj %p target %d delta %d size %d.\n", | |
3441 | obj, reloc->target_handle, | |
3442 | (int) reloc->delta, (int) target_obj->size); | |
3443 | drm_gem_object_unreference(target_obj); | |
3444 | i915_gem_object_unpin(obj); | |
3445 | return -EINVAL; | |
3446 | } | |
3447 | ||
2ef7eeaa EA |
3448 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); |
3449 | if (ret != 0) { | |
3450 | drm_gem_object_unreference(target_obj); | |
3451 | i915_gem_object_unpin(obj); | |
3452 | return -EINVAL; | |
673a394b EA |
3453 | } |
3454 | ||
3455 | /* Map the page containing the relocation we're going to | |
3456 | * perform. | |
3457 | */ | |
40a5f0de | 3458 | reloc_offset = obj_priv->gtt_offset + reloc->offset; |
0839ccb8 KP |
3459 | reloc_page = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping, |
3460 | (reloc_offset & | |
3461 | ~(PAGE_SIZE - 1))); | |
3043c60c | 3462 | reloc_entry = (uint32_t __iomem *)(reloc_page + |
0839ccb8 | 3463 | (reloc_offset & (PAGE_SIZE - 1))); |
40a5f0de | 3464 | reloc_val = target_obj_priv->gtt_offset + reloc->delta; |
673a394b EA |
3465 | |
3466 | #if WATCH_BUF | |
3467 | DRM_INFO("Applied relocation: %p@0x%08x %08x -> %08x\n", | |
40a5f0de | 3468 | obj, (unsigned int) reloc->offset, |
673a394b EA |
3469 | readl(reloc_entry), reloc_val); |
3470 | #endif | |
3471 | writel(reloc_val, reloc_entry); | |
0839ccb8 | 3472 | io_mapping_unmap_atomic(reloc_page); |
673a394b | 3473 | |
40a5f0de EA |
3474 | /* The updated presumed offset for this entry will be |
3475 | * copied back out to the user. | |
673a394b | 3476 | */ |
40a5f0de | 3477 | reloc->presumed_offset = target_obj_priv->gtt_offset; |
673a394b EA |
3478 | |
3479 | drm_gem_object_unreference(target_obj); | |
3480 | } | |
3481 | ||
673a394b EA |
3482 | #if WATCH_BUF |
3483 | if (0) | |
3484 | i915_gem_dump_object(obj, 128, __func__, ~0); | |
3485 | #endif | |
3486 | return 0; | |
3487 | } | |
3488 | ||
3489 | /** Dispatch a batchbuffer to the ring | |
3490 | */ | |
3491 | static int | |
3492 | i915_dispatch_gem_execbuffer(struct drm_device *dev, | |
76446cac | 3493 | struct drm_i915_gem_execbuffer2 *exec, |
201361a5 | 3494 | struct drm_clip_rect *cliprects, |
673a394b EA |
3495 | uint64_t exec_offset) |
3496 | { | |
3497 | drm_i915_private_t *dev_priv = dev->dev_private; | |
673a394b EA |
3498 | int nbox = exec->num_cliprects; |
3499 | int i = 0, count; | |
83d60795 | 3500 | uint32_t exec_start, exec_len; |
673a394b EA |
3501 | RING_LOCALS; |
3502 | ||
3503 | exec_start = (uint32_t) exec_offset + exec->batch_start_offset; | |
3504 | exec_len = (uint32_t) exec->batch_len; | |
3505 | ||
8f0dc5bf | 3506 | trace_i915_gem_request_submit(dev, dev_priv->mm.next_gem_seqno + 1); |
1c5d22f7 | 3507 | |
673a394b EA |
3508 | count = nbox ? nbox : 1; |
3509 | ||
3510 | for (i = 0; i < count; i++) { | |
3511 | if (i < nbox) { | |
201361a5 | 3512 | int ret = i915_emit_box(dev, cliprects, i, |
673a394b EA |
3513 | exec->DR1, exec->DR4); |
3514 | if (ret) | |
3515 | return ret; | |
3516 | } | |
3517 | ||
3518 | if (IS_I830(dev) || IS_845G(dev)) { | |
3519 | BEGIN_LP_RING(4); | |
3520 | OUT_RING(MI_BATCH_BUFFER); | |
3521 | OUT_RING(exec_start | MI_BATCH_NON_SECURE); | |
3522 | OUT_RING(exec_start + exec_len - 4); | |
3523 | OUT_RING(0); | |
3524 | ADVANCE_LP_RING(); | |
3525 | } else { | |
3526 | BEGIN_LP_RING(2); | |
3527 | if (IS_I965G(dev)) { | |
3528 | OUT_RING(MI_BATCH_BUFFER_START | | |
3529 | (2 << 6) | | |
3530 | MI_BATCH_NON_SECURE_I965); | |
3531 | OUT_RING(exec_start); | |
3532 | } else { | |
3533 | OUT_RING(MI_BATCH_BUFFER_START | | |
3534 | (2 << 6)); | |
3535 | OUT_RING(exec_start | MI_BATCH_NON_SECURE); | |
3536 | } | |
3537 | ADVANCE_LP_RING(); | |
3538 | } | |
3539 | } | |
3540 | ||
3541 | /* XXX breadcrumb */ | |
3542 | return 0; | |
3543 | } | |
3544 | ||
3545 | /* Throttle our rendering by waiting until the ring has completed our requests | |
3546 | * emitted over 20 msec ago. | |
3547 | * | |
b962442e EA |
3548 | * Note that if we were to use the current jiffies each time around the loop, |
3549 | * we wouldn't escape the function with any frames outstanding if the time to | |
3550 | * render a frame was over 20ms. | |
3551 | * | |
673a394b EA |
3552 | * This should get us reasonable parallelism between CPU and GPU but also |
3553 | * relatively low latency when blocking on a particular request to finish. | |
3554 | */ | |
3555 | static int | |
3556 | i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file_priv) | |
3557 | { | |
3558 | struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; | |
3559 | int ret = 0; | |
b962442e | 3560 | unsigned long recent_enough = jiffies - msecs_to_jiffies(20); |
673a394b EA |
3561 | |
3562 | mutex_lock(&dev->struct_mutex); | |
b962442e EA |
3563 | while (!list_empty(&i915_file_priv->mm.request_list)) { |
3564 | struct drm_i915_gem_request *request; | |
3565 | ||
3566 | request = list_first_entry(&i915_file_priv->mm.request_list, | |
3567 | struct drm_i915_gem_request, | |
3568 | client_list); | |
3569 | ||
3570 | if (time_after_eq(request->emitted_jiffies, recent_enough)) | |
3571 | break; | |
3572 | ||
3573 | ret = i915_wait_request(dev, request->seqno); | |
3574 | if (ret != 0) | |
3575 | break; | |
3576 | } | |
673a394b | 3577 | mutex_unlock(&dev->struct_mutex); |
b962442e | 3578 | |
673a394b EA |
3579 | return ret; |
3580 | } | |
3581 | ||
40a5f0de | 3582 | static int |
76446cac | 3583 | i915_gem_get_relocs_from_user(struct drm_i915_gem_exec_object2 *exec_list, |
40a5f0de EA |
3584 | uint32_t buffer_count, |
3585 | struct drm_i915_gem_relocation_entry **relocs) | |
3586 | { | |
3587 | uint32_t reloc_count = 0, reloc_index = 0, i; | |
3588 | int ret; | |
3589 | ||
3590 | *relocs = NULL; | |
3591 | for (i = 0; i < buffer_count; i++) { | |
3592 | if (reloc_count + exec_list[i].relocation_count < reloc_count) | |
3593 | return -EINVAL; | |
3594 | reloc_count += exec_list[i].relocation_count; | |
3595 | } | |
3596 | ||
8e7d2b2c | 3597 | *relocs = drm_calloc_large(reloc_count, sizeof(**relocs)); |
76446cac JB |
3598 | if (*relocs == NULL) { |
3599 | DRM_ERROR("failed to alloc relocs, count %d\n", reloc_count); | |
40a5f0de | 3600 | return -ENOMEM; |
76446cac | 3601 | } |
40a5f0de EA |
3602 | |
3603 | for (i = 0; i < buffer_count; i++) { | |
3604 | struct drm_i915_gem_relocation_entry __user *user_relocs; | |
3605 | ||
3606 | user_relocs = (void __user *)(uintptr_t)exec_list[i].relocs_ptr; | |
3607 | ||
3608 | ret = copy_from_user(&(*relocs)[reloc_index], | |
3609 | user_relocs, | |
3610 | exec_list[i].relocation_count * | |
3611 | sizeof(**relocs)); | |
3612 | if (ret != 0) { | |
8e7d2b2c | 3613 | drm_free_large(*relocs); |
40a5f0de | 3614 | *relocs = NULL; |
2bc43b5c | 3615 | return -EFAULT; |
40a5f0de EA |
3616 | } |
3617 | ||
3618 | reloc_index += exec_list[i].relocation_count; | |
3619 | } | |
3620 | ||
2bc43b5c | 3621 | return 0; |
40a5f0de EA |
3622 | } |
3623 | ||
3624 | static int | |
76446cac | 3625 | i915_gem_put_relocs_to_user(struct drm_i915_gem_exec_object2 *exec_list, |
40a5f0de EA |
3626 | uint32_t buffer_count, |
3627 | struct drm_i915_gem_relocation_entry *relocs) | |
3628 | { | |
3629 | uint32_t reloc_count = 0, i; | |
2bc43b5c | 3630 | int ret = 0; |
40a5f0de | 3631 | |
93533c29 CW |
3632 | if (relocs == NULL) |
3633 | return 0; | |
3634 | ||
40a5f0de EA |
3635 | for (i = 0; i < buffer_count; i++) { |
3636 | struct drm_i915_gem_relocation_entry __user *user_relocs; | |
2bc43b5c | 3637 | int unwritten; |
40a5f0de EA |
3638 | |
3639 | user_relocs = (void __user *)(uintptr_t)exec_list[i].relocs_ptr; | |
3640 | ||
2bc43b5c FM |
3641 | unwritten = copy_to_user(user_relocs, |
3642 | &relocs[reloc_count], | |
3643 | exec_list[i].relocation_count * | |
3644 | sizeof(*relocs)); | |
3645 | ||
3646 | if (unwritten) { | |
3647 | ret = -EFAULT; | |
3648 | goto err; | |
40a5f0de EA |
3649 | } |
3650 | ||
3651 | reloc_count += exec_list[i].relocation_count; | |
3652 | } | |
3653 | ||
2bc43b5c | 3654 | err: |
8e7d2b2c | 3655 | drm_free_large(relocs); |
40a5f0de EA |
3656 | |
3657 | return ret; | |
3658 | } | |
3659 | ||
83d60795 | 3660 | static int |
76446cac | 3661 | i915_gem_check_execbuffer (struct drm_i915_gem_execbuffer2 *exec, |
83d60795 CW |
3662 | uint64_t exec_offset) |
3663 | { | |
3664 | uint32_t exec_start, exec_len; | |
3665 | ||
3666 | exec_start = (uint32_t) exec_offset + exec->batch_start_offset; | |
3667 | exec_len = (uint32_t) exec->batch_len; | |
3668 | ||
3669 | if ((exec_start | exec_len) & 0x7) | |
3670 | return -EINVAL; | |
3671 | ||
3672 | if (!exec_start) | |
3673 | return -EINVAL; | |
3674 | ||
3675 | return 0; | |
3676 | } | |
3677 | ||
6b95a207 KH |
3678 | static int |
3679 | i915_gem_wait_for_pending_flip(struct drm_device *dev, | |
3680 | struct drm_gem_object **object_list, | |
3681 | int count) | |
3682 | { | |
3683 | drm_i915_private_t *dev_priv = dev->dev_private; | |
3684 | struct drm_i915_gem_object *obj_priv; | |
3685 | DEFINE_WAIT(wait); | |
3686 | int i, ret = 0; | |
3687 | ||
3688 | for (;;) { | |
3689 | prepare_to_wait(&dev_priv->pending_flip_queue, | |
3690 | &wait, TASK_INTERRUPTIBLE); | |
3691 | for (i = 0; i < count; i++) { | |
23010e43 | 3692 | obj_priv = to_intel_bo(object_list[i]); |
6b95a207 KH |
3693 | if (atomic_read(&obj_priv->pending_flip) > 0) |
3694 | break; | |
3695 | } | |
3696 | if (i == count) | |
3697 | break; | |
3698 | ||
3699 | if (!signal_pending(current)) { | |
3700 | mutex_unlock(&dev->struct_mutex); | |
3701 | schedule(); | |
3702 | mutex_lock(&dev->struct_mutex); | |
3703 | continue; | |
3704 | } | |
3705 | ret = -ERESTARTSYS; | |
3706 | break; | |
3707 | } | |
3708 | finish_wait(&dev_priv->pending_flip_queue, &wait); | |
3709 | ||
3710 | return ret; | |
3711 | } | |
3712 | ||
673a394b | 3713 | int |
76446cac JB |
3714 | i915_gem_do_execbuffer(struct drm_device *dev, void *data, |
3715 | struct drm_file *file_priv, | |
3716 | struct drm_i915_gem_execbuffer2 *args, | |
3717 | struct drm_i915_gem_exec_object2 *exec_list) | |
673a394b EA |
3718 | { |
3719 | drm_i915_private_t *dev_priv = dev->dev_private; | |
673a394b EA |
3720 | struct drm_gem_object **object_list = NULL; |
3721 | struct drm_gem_object *batch_obj; | |
b70d11da | 3722 | struct drm_i915_gem_object *obj_priv; |
201361a5 | 3723 | struct drm_clip_rect *cliprects = NULL; |
93533c29 | 3724 | struct drm_i915_gem_relocation_entry *relocs = NULL; |
76446cac | 3725 | int ret = 0, ret2, i, pinned = 0; |
673a394b | 3726 | uint64_t exec_offset; |
40a5f0de | 3727 | uint32_t seqno, flush_domains, reloc_index; |
6b95a207 | 3728 | int pin_tries, flips; |
673a394b EA |
3729 | |
3730 | #if WATCH_EXEC | |
3731 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", | |
3732 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); | |
3733 | #endif | |
3734 | ||
4f481ed2 EA |
3735 | if (args->buffer_count < 1) { |
3736 | DRM_ERROR("execbuf with %d buffers\n", args->buffer_count); | |
3737 | return -EINVAL; | |
3738 | } | |
c8e0f93a | 3739 | object_list = drm_malloc_ab(sizeof(*object_list), args->buffer_count); |
76446cac JB |
3740 | if (object_list == NULL) { |
3741 | DRM_ERROR("Failed to allocate object list for %d buffers\n", | |
673a394b EA |
3742 | args->buffer_count); |
3743 | ret = -ENOMEM; | |
3744 | goto pre_mutex_err; | |
3745 | } | |
673a394b | 3746 | |
201361a5 | 3747 | if (args->num_cliprects != 0) { |
9a298b2a EA |
3748 | cliprects = kcalloc(args->num_cliprects, sizeof(*cliprects), |
3749 | GFP_KERNEL); | |
a40e8d31 OA |
3750 | if (cliprects == NULL) { |
3751 | ret = -ENOMEM; | |
201361a5 | 3752 | goto pre_mutex_err; |
a40e8d31 | 3753 | } |
201361a5 EA |
3754 | |
3755 | ret = copy_from_user(cliprects, | |
3756 | (struct drm_clip_rect __user *) | |
3757 | (uintptr_t) args->cliprects_ptr, | |
3758 | sizeof(*cliprects) * args->num_cliprects); | |
3759 | if (ret != 0) { | |
3760 | DRM_ERROR("copy %d cliprects failed: %d\n", | |
3761 | args->num_cliprects, ret); | |
3762 | goto pre_mutex_err; | |
3763 | } | |
3764 | } | |
3765 | ||
40a5f0de EA |
3766 | ret = i915_gem_get_relocs_from_user(exec_list, args->buffer_count, |
3767 | &relocs); | |
3768 | if (ret != 0) | |
3769 | goto pre_mutex_err; | |
3770 | ||
673a394b EA |
3771 | mutex_lock(&dev->struct_mutex); |
3772 | ||
3773 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
3774 | ||
ba1234d1 | 3775 | if (atomic_read(&dev_priv->mm.wedged)) { |
673a394b | 3776 | mutex_unlock(&dev->struct_mutex); |
a198bc80 CW |
3777 | ret = -EIO; |
3778 | goto pre_mutex_err; | |
673a394b EA |
3779 | } |
3780 | ||
3781 | if (dev_priv->mm.suspended) { | |
673a394b | 3782 | mutex_unlock(&dev->struct_mutex); |
a198bc80 CW |
3783 | ret = -EBUSY; |
3784 | goto pre_mutex_err; | |
673a394b EA |
3785 | } |
3786 | ||
ac94a962 | 3787 | /* Look up object handles */ |
6b95a207 | 3788 | flips = 0; |
673a394b EA |
3789 | for (i = 0; i < args->buffer_count; i++) { |
3790 | object_list[i] = drm_gem_object_lookup(dev, file_priv, | |
3791 | exec_list[i].handle); | |
3792 | if (object_list[i] == NULL) { | |
3793 | DRM_ERROR("Invalid object handle %d at index %d\n", | |
3794 | exec_list[i].handle, i); | |
0ce907f8 CW |
3795 | /* prevent error path from reading uninitialized data */ |
3796 | args->buffer_count = i + 1; | |
673a394b EA |
3797 | ret = -EBADF; |
3798 | goto err; | |
3799 | } | |
b70d11da | 3800 | |
23010e43 | 3801 | obj_priv = to_intel_bo(object_list[i]); |
b70d11da KH |
3802 | if (obj_priv->in_execbuffer) { |
3803 | DRM_ERROR("Object %p appears more than once in object list\n", | |
3804 | object_list[i]); | |
0ce907f8 CW |
3805 | /* prevent error path from reading uninitialized data */ |
3806 | args->buffer_count = i + 1; | |
b70d11da KH |
3807 | ret = -EBADF; |
3808 | goto err; | |
3809 | } | |
3810 | obj_priv->in_execbuffer = true; | |
6b95a207 KH |
3811 | flips += atomic_read(&obj_priv->pending_flip); |
3812 | } | |
3813 | ||
3814 | if (flips > 0) { | |
3815 | ret = i915_gem_wait_for_pending_flip(dev, object_list, | |
3816 | args->buffer_count); | |
3817 | if (ret) | |
3818 | goto err; | |
ac94a962 | 3819 | } |
673a394b | 3820 | |
ac94a962 KP |
3821 | /* Pin and relocate */ |
3822 | for (pin_tries = 0; ; pin_tries++) { | |
3823 | ret = 0; | |
40a5f0de EA |
3824 | reloc_index = 0; |
3825 | ||
ac94a962 KP |
3826 | for (i = 0; i < args->buffer_count; i++) { |
3827 | object_list[i]->pending_read_domains = 0; | |
3828 | object_list[i]->pending_write_domain = 0; | |
3829 | ret = i915_gem_object_pin_and_relocate(object_list[i], | |
3830 | file_priv, | |
40a5f0de EA |
3831 | &exec_list[i], |
3832 | &relocs[reloc_index]); | |
ac94a962 KP |
3833 | if (ret) |
3834 | break; | |
3835 | pinned = i + 1; | |
40a5f0de | 3836 | reloc_index += exec_list[i].relocation_count; |
ac94a962 KP |
3837 | } |
3838 | /* success */ | |
3839 | if (ret == 0) | |
3840 | break; | |
3841 | ||
3842 | /* error other than GTT full, or we've already tried again */ | |
2939e1f5 | 3843 | if (ret != -ENOSPC || pin_tries >= 1) { |
07f73f69 CW |
3844 | if (ret != -ERESTARTSYS) { |
3845 | unsigned long long total_size = 0; | |
3846 | for (i = 0; i < args->buffer_count; i++) | |
3847 | total_size += object_list[i]->size; | |
3848 | DRM_ERROR("Failed to pin buffer %d of %d, total %llu bytes: %d\n", | |
3849 | pinned+1, args->buffer_count, | |
3850 | total_size, ret); | |
3851 | DRM_ERROR("%d objects [%d pinned], " | |
3852 | "%d object bytes [%d pinned], " | |
3853 | "%d/%d gtt bytes\n", | |
3854 | atomic_read(&dev->object_count), | |
3855 | atomic_read(&dev->pin_count), | |
3856 | atomic_read(&dev->object_memory), | |
3857 | atomic_read(&dev->pin_memory), | |
3858 | atomic_read(&dev->gtt_memory), | |
3859 | dev->gtt_total); | |
3860 | } | |
673a394b EA |
3861 | goto err; |
3862 | } | |
ac94a962 KP |
3863 | |
3864 | /* unpin all of our buffers */ | |
3865 | for (i = 0; i < pinned; i++) | |
3866 | i915_gem_object_unpin(object_list[i]); | |
b1177636 | 3867 | pinned = 0; |
ac94a962 KP |
3868 | |
3869 | /* evict everyone we can from the aperture */ | |
3870 | ret = i915_gem_evict_everything(dev); | |
07f73f69 | 3871 | if (ret && ret != -ENOSPC) |
ac94a962 | 3872 | goto err; |
673a394b EA |
3873 | } |
3874 | ||
3875 | /* Set the pending read domains for the batch buffer to COMMAND */ | |
3876 | batch_obj = object_list[args->buffer_count-1]; | |
5f26a2c7 CW |
3877 | if (batch_obj->pending_write_domain) { |
3878 | DRM_ERROR("Attempting to use self-modifying batch buffer\n"); | |
3879 | ret = -EINVAL; | |
3880 | goto err; | |
3881 | } | |
3882 | batch_obj->pending_read_domains |= I915_GEM_DOMAIN_COMMAND; | |
673a394b | 3883 | |
83d60795 CW |
3884 | /* Sanity check the batch buffer, prior to moving objects */ |
3885 | exec_offset = exec_list[args->buffer_count - 1].offset; | |
3886 | ret = i915_gem_check_execbuffer (args, exec_offset); | |
3887 | if (ret != 0) { | |
3888 | DRM_ERROR("execbuf with invalid offset/length\n"); | |
3889 | goto err; | |
3890 | } | |
3891 | ||
673a394b EA |
3892 | i915_verify_inactive(dev, __FILE__, __LINE__); |
3893 | ||
646f0f6e KP |
3894 | /* Zero the global flush/invalidate flags. These |
3895 | * will be modified as new domains are computed | |
3896 | * for each object | |
3897 | */ | |
3898 | dev->invalidate_domains = 0; | |
3899 | dev->flush_domains = 0; | |
3900 | ||
673a394b EA |
3901 | for (i = 0; i < args->buffer_count; i++) { |
3902 | struct drm_gem_object *obj = object_list[i]; | |
673a394b | 3903 | |
646f0f6e | 3904 | /* Compute new gpu domains and update invalidate/flush */ |
8b0e378a | 3905 | i915_gem_object_set_to_gpu_domain(obj); |
673a394b EA |
3906 | } |
3907 | ||
3908 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
3909 | ||
646f0f6e KP |
3910 | if (dev->invalidate_domains | dev->flush_domains) { |
3911 | #if WATCH_EXEC | |
3912 | DRM_INFO("%s: invalidate_domains %08x flush_domains %08x\n", | |
3913 | __func__, | |
3914 | dev->invalidate_domains, | |
3915 | dev->flush_domains); | |
3916 | #endif | |
3917 | i915_gem_flush(dev, | |
3918 | dev->invalidate_domains, | |
3919 | dev->flush_domains); | |
99fcb766 | 3920 | if (dev->flush_domains & I915_GEM_GPU_DOMAINS) |
b962442e EA |
3921 | (void)i915_add_request(dev, file_priv, |
3922 | dev->flush_domains); | |
646f0f6e | 3923 | } |
673a394b | 3924 | |
efbeed96 EA |
3925 | for (i = 0; i < args->buffer_count; i++) { |
3926 | struct drm_gem_object *obj = object_list[i]; | |
23010e43 | 3927 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
1c5d22f7 | 3928 | uint32_t old_write_domain = obj->write_domain; |
efbeed96 EA |
3929 | |
3930 | obj->write_domain = obj->pending_write_domain; | |
99fcb766 DV |
3931 | if (obj->write_domain) |
3932 | list_move_tail(&obj_priv->gpu_write_list, | |
3933 | &dev_priv->mm.gpu_write_list); | |
3934 | else | |
3935 | list_del_init(&obj_priv->gpu_write_list); | |
3936 | ||
1c5d22f7 CW |
3937 | trace_i915_gem_object_change_domain(obj, |
3938 | obj->read_domains, | |
3939 | old_write_domain); | |
efbeed96 EA |
3940 | } |
3941 | ||
673a394b EA |
3942 | i915_verify_inactive(dev, __FILE__, __LINE__); |
3943 | ||
3944 | #if WATCH_COHERENCY | |
3945 | for (i = 0; i < args->buffer_count; i++) { | |
3946 | i915_gem_object_check_coherency(object_list[i], | |
3947 | exec_list[i].handle); | |
3948 | } | |
3949 | #endif | |
3950 | ||
673a394b | 3951 | #if WATCH_EXEC |
6911a9b8 | 3952 | i915_gem_dump_object(batch_obj, |
673a394b EA |
3953 | args->batch_len, |
3954 | __func__, | |
3955 | ~0); | |
3956 | #endif | |
3957 | ||
673a394b | 3958 | /* Exec the batchbuffer */ |
201361a5 | 3959 | ret = i915_dispatch_gem_execbuffer(dev, args, cliprects, exec_offset); |
673a394b EA |
3960 | if (ret) { |
3961 | DRM_ERROR("dispatch failed %d\n", ret); | |
3962 | goto err; | |
3963 | } | |
3964 | ||
3965 | /* | |
3966 | * Ensure that the commands in the batch buffer are | |
3967 | * finished before the interrupt fires | |
3968 | */ | |
3969 | flush_domains = i915_retire_commands(dev); | |
3970 | ||
3971 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
3972 | ||
3973 | /* | |
3974 | * Get a seqno representing the execution of the current buffer, | |
3975 | * which we can wait on. We would like to mitigate these interrupts, | |
3976 | * likely by only creating seqnos occasionally (so that we have | |
3977 | * *some* interrupts representing completion of buffers that we can | |
3978 | * wait on when trying to clear up gtt space). | |
3979 | */ | |
b962442e | 3980 | seqno = i915_add_request(dev, file_priv, flush_domains); |
673a394b | 3981 | BUG_ON(seqno == 0); |
673a394b EA |
3982 | for (i = 0; i < args->buffer_count; i++) { |
3983 | struct drm_gem_object *obj = object_list[i]; | |
673a394b | 3984 | |
ce44b0ea | 3985 | i915_gem_object_move_to_active(obj, seqno); |
673a394b EA |
3986 | #if WATCH_LRU |
3987 | DRM_INFO("%s: move to exec list %p\n", __func__, obj); | |
3988 | #endif | |
3989 | } | |
3990 | #if WATCH_LRU | |
3991 | i915_dump_lru(dev, __func__); | |
3992 | #endif | |
3993 | ||
3994 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
3995 | ||
673a394b | 3996 | err: |
aad87dff JL |
3997 | for (i = 0; i < pinned; i++) |
3998 | i915_gem_object_unpin(object_list[i]); | |
3999 | ||
b70d11da KH |
4000 | for (i = 0; i < args->buffer_count; i++) { |
4001 | if (object_list[i]) { | |
23010e43 | 4002 | obj_priv = to_intel_bo(object_list[i]); |
b70d11da KH |
4003 | obj_priv->in_execbuffer = false; |
4004 | } | |
aad87dff | 4005 | drm_gem_object_unreference(object_list[i]); |
b70d11da | 4006 | } |
673a394b | 4007 | |
673a394b EA |
4008 | mutex_unlock(&dev->struct_mutex); |
4009 | ||
93533c29 | 4010 | pre_mutex_err: |
40a5f0de EA |
4011 | /* Copy the updated relocations out regardless of current error |
4012 | * state. Failure to update the relocs would mean that the next | |
4013 | * time userland calls execbuf, it would do so with presumed offset | |
4014 | * state that didn't match the actual object state. | |
4015 | */ | |
4016 | ret2 = i915_gem_put_relocs_to_user(exec_list, args->buffer_count, | |
4017 | relocs); | |
4018 | if (ret2 != 0) { | |
4019 | DRM_ERROR("Failed to copy relocations back out: %d\n", ret2); | |
4020 | ||
4021 | if (ret == 0) | |
4022 | ret = ret2; | |
4023 | } | |
4024 | ||
8e7d2b2c | 4025 | drm_free_large(object_list); |
9a298b2a | 4026 | kfree(cliprects); |
673a394b EA |
4027 | |
4028 | return ret; | |
4029 | } | |
4030 | ||
76446cac JB |
4031 | /* |
4032 | * Legacy execbuffer just creates an exec2 list from the original exec object | |
4033 | * list array and passes it to the real function. | |
4034 | */ | |
4035 | int | |
4036 | i915_gem_execbuffer(struct drm_device *dev, void *data, | |
4037 | struct drm_file *file_priv) | |
4038 | { | |
4039 | struct drm_i915_gem_execbuffer *args = data; | |
4040 | struct drm_i915_gem_execbuffer2 exec2; | |
4041 | struct drm_i915_gem_exec_object *exec_list = NULL; | |
4042 | struct drm_i915_gem_exec_object2 *exec2_list = NULL; | |
4043 | int ret, i; | |
4044 | ||
4045 | #if WATCH_EXEC | |
4046 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", | |
4047 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); | |
4048 | #endif | |
4049 | ||
4050 | if (args->buffer_count < 1) { | |
4051 | DRM_ERROR("execbuf with %d buffers\n", args->buffer_count); | |
4052 | return -EINVAL; | |
4053 | } | |
4054 | ||
4055 | /* Copy in the exec list from userland */ | |
4056 | exec_list = drm_malloc_ab(sizeof(*exec_list), args->buffer_count); | |
4057 | exec2_list = drm_malloc_ab(sizeof(*exec2_list), args->buffer_count); | |
4058 | if (exec_list == NULL || exec2_list == NULL) { | |
4059 | DRM_ERROR("Failed to allocate exec list for %d buffers\n", | |
4060 | args->buffer_count); | |
4061 | drm_free_large(exec_list); | |
4062 | drm_free_large(exec2_list); | |
4063 | return -ENOMEM; | |
4064 | } | |
4065 | ret = copy_from_user(exec_list, | |
4066 | (struct drm_i915_relocation_entry __user *) | |
4067 | (uintptr_t) args->buffers_ptr, | |
4068 | sizeof(*exec_list) * args->buffer_count); | |
4069 | if (ret != 0) { | |
4070 | DRM_ERROR("copy %d exec entries failed %d\n", | |
4071 | args->buffer_count, ret); | |
4072 | drm_free_large(exec_list); | |
4073 | drm_free_large(exec2_list); | |
4074 | return -EFAULT; | |
4075 | } | |
4076 | ||
4077 | for (i = 0; i < args->buffer_count; i++) { | |
4078 | exec2_list[i].handle = exec_list[i].handle; | |
4079 | exec2_list[i].relocation_count = exec_list[i].relocation_count; | |
4080 | exec2_list[i].relocs_ptr = exec_list[i].relocs_ptr; | |
4081 | exec2_list[i].alignment = exec_list[i].alignment; | |
4082 | exec2_list[i].offset = exec_list[i].offset; | |
4083 | if (!IS_I965G(dev)) | |
4084 | exec2_list[i].flags = EXEC_OBJECT_NEEDS_FENCE; | |
4085 | else | |
4086 | exec2_list[i].flags = 0; | |
4087 | } | |
4088 | ||
4089 | exec2.buffers_ptr = args->buffers_ptr; | |
4090 | exec2.buffer_count = args->buffer_count; | |
4091 | exec2.batch_start_offset = args->batch_start_offset; | |
4092 | exec2.batch_len = args->batch_len; | |
4093 | exec2.DR1 = args->DR1; | |
4094 | exec2.DR4 = args->DR4; | |
4095 | exec2.num_cliprects = args->num_cliprects; | |
4096 | exec2.cliprects_ptr = args->cliprects_ptr; | |
4097 | exec2.flags = 0; | |
4098 | ||
4099 | ret = i915_gem_do_execbuffer(dev, data, file_priv, &exec2, exec2_list); | |
4100 | if (!ret) { | |
4101 | /* Copy the new buffer offsets back to the user's exec list. */ | |
4102 | for (i = 0; i < args->buffer_count; i++) | |
4103 | exec_list[i].offset = exec2_list[i].offset; | |
4104 | /* ... and back out to userspace */ | |
4105 | ret = copy_to_user((struct drm_i915_relocation_entry __user *) | |
4106 | (uintptr_t) args->buffers_ptr, | |
4107 | exec_list, | |
4108 | sizeof(*exec_list) * args->buffer_count); | |
4109 | if (ret) { | |
4110 | ret = -EFAULT; | |
4111 | DRM_ERROR("failed to copy %d exec entries " | |
4112 | "back to user (%d)\n", | |
4113 | args->buffer_count, ret); | |
4114 | } | |
76446cac JB |
4115 | } |
4116 | ||
4117 | drm_free_large(exec_list); | |
4118 | drm_free_large(exec2_list); | |
4119 | return ret; | |
4120 | } | |
4121 | ||
4122 | int | |
4123 | i915_gem_execbuffer2(struct drm_device *dev, void *data, | |
4124 | struct drm_file *file_priv) | |
4125 | { | |
4126 | struct drm_i915_gem_execbuffer2 *args = data; | |
4127 | struct drm_i915_gem_exec_object2 *exec2_list = NULL; | |
4128 | int ret; | |
4129 | ||
4130 | #if WATCH_EXEC | |
4131 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", | |
4132 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); | |
4133 | #endif | |
4134 | ||
4135 | if (args->buffer_count < 1) { | |
4136 | DRM_ERROR("execbuf2 with %d buffers\n", args->buffer_count); | |
4137 | return -EINVAL; | |
4138 | } | |
4139 | ||
4140 | exec2_list = drm_malloc_ab(sizeof(*exec2_list), args->buffer_count); | |
4141 | if (exec2_list == NULL) { | |
4142 | DRM_ERROR("Failed to allocate exec list for %d buffers\n", | |
4143 | args->buffer_count); | |
4144 | return -ENOMEM; | |
4145 | } | |
4146 | ret = copy_from_user(exec2_list, | |
4147 | (struct drm_i915_relocation_entry __user *) | |
4148 | (uintptr_t) args->buffers_ptr, | |
4149 | sizeof(*exec2_list) * args->buffer_count); | |
4150 | if (ret != 0) { | |
4151 | DRM_ERROR("copy %d exec entries failed %d\n", | |
4152 | args->buffer_count, ret); | |
4153 | drm_free_large(exec2_list); | |
4154 | return -EFAULT; | |
4155 | } | |
4156 | ||
4157 | ret = i915_gem_do_execbuffer(dev, data, file_priv, args, exec2_list); | |
4158 | if (!ret) { | |
4159 | /* Copy the new buffer offsets back to the user's exec list. */ | |
4160 | ret = copy_to_user((struct drm_i915_relocation_entry __user *) | |
4161 | (uintptr_t) args->buffers_ptr, | |
4162 | exec2_list, | |
4163 | sizeof(*exec2_list) * args->buffer_count); | |
4164 | if (ret) { | |
4165 | ret = -EFAULT; | |
4166 | DRM_ERROR("failed to copy %d exec entries " | |
4167 | "back to user (%d)\n", | |
4168 | args->buffer_count, ret); | |
4169 | } | |
4170 | } | |
4171 | ||
4172 | drm_free_large(exec2_list); | |
4173 | return ret; | |
4174 | } | |
4175 | ||
673a394b EA |
4176 | int |
4177 | i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment) | |
4178 | { | |
4179 | struct drm_device *dev = obj->dev; | |
23010e43 | 4180 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
4181 | int ret; |
4182 | ||
4183 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
4184 | if (obj_priv->gtt_space == NULL) { | |
4185 | ret = i915_gem_object_bind_to_gtt(obj, alignment); | |
9731129c | 4186 | if (ret) |
673a394b | 4187 | return ret; |
22c344e9 | 4188 | } |
76446cac | 4189 | |
673a394b EA |
4190 | obj_priv->pin_count++; |
4191 | ||
4192 | /* If the object is not active and not pending a flush, | |
4193 | * remove it from the inactive list | |
4194 | */ | |
4195 | if (obj_priv->pin_count == 1) { | |
4196 | atomic_inc(&dev->pin_count); | |
4197 | atomic_add(obj->size, &dev->pin_memory); | |
4198 | if (!obj_priv->active && | |
21d509e3 | 4199 | (obj->write_domain & I915_GEM_GPU_DOMAINS) == 0 && |
673a394b EA |
4200 | !list_empty(&obj_priv->list)) |
4201 | list_del_init(&obj_priv->list); | |
4202 | } | |
4203 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
4204 | ||
4205 | return 0; | |
4206 | } | |
4207 | ||
4208 | void | |
4209 | i915_gem_object_unpin(struct drm_gem_object *obj) | |
4210 | { | |
4211 | struct drm_device *dev = obj->dev; | |
4212 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 4213 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
4214 | |
4215 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
4216 | obj_priv->pin_count--; | |
4217 | BUG_ON(obj_priv->pin_count < 0); | |
4218 | BUG_ON(obj_priv->gtt_space == NULL); | |
4219 | ||
4220 | /* If the object is no longer pinned, and is | |
4221 | * neither active nor being flushed, then stick it on | |
4222 | * the inactive list | |
4223 | */ | |
4224 | if (obj_priv->pin_count == 0) { | |
4225 | if (!obj_priv->active && | |
21d509e3 | 4226 | (obj->write_domain & I915_GEM_GPU_DOMAINS) == 0) |
673a394b EA |
4227 | list_move_tail(&obj_priv->list, |
4228 | &dev_priv->mm.inactive_list); | |
4229 | atomic_dec(&dev->pin_count); | |
4230 | atomic_sub(obj->size, &dev->pin_memory); | |
4231 | } | |
4232 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
4233 | } | |
4234 | ||
4235 | int | |
4236 | i915_gem_pin_ioctl(struct drm_device *dev, void *data, | |
4237 | struct drm_file *file_priv) | |
4238 | { | |
4239 | struct drm_i915_gem_pin *args = data; | |
4240 | struct drm_gem_object *obj; | |
4241 | struct drm_i915_gem_object *obj_priv; | |
4242 | int ret; | |
4243 | ||
4244 | mutex_lock(&dev->struct_mutex); | |
4245 | ||
4246 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
4247 | if (obj == NULL) { | |
4248 | DRM_ERROR("Bad handle in i915_gem_pin_ioctl(): %d\n", | |
4249 | args->handle); | |
4250 | mutex_unlock(&dev->struct_mutex); | |
4251 | return -EBADF; | |
4252 | } | |
23010e43 | 4253 | obj_priv = to_intel_bo(obj); |
673a394b | 4254 | |
bb6baf76 CW |
4255 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
4256 | DRM_ERROR("Attempting to pin a purgeable buffer\n"); | |
3ef94daa CW |
4257 | drm_gem_object_unreference(obj); |
4258 | mutex_unlock(&dev->struct_mutex); | |
4259 | return -EINVAL; | |
4260 | } | |
4261 | ||
79e53945 JB |
4262 | if (obj_priv->pin_filp != NULL && obj_priv->pin_filp != file_priv) { |
4263 | DRM_ERROR("Already pinned in i915_gem_pin_ioctl(): %d\n", | |
4264 | args->handle); | |
96dec61d | 4265 | drm_gem_object_unreference(obj); |
673a394b | 4266 | mutex_unlock(&dev->struct_mutex); |
79e53945 JB |
4267 | return -EINVAL; |
4268 | } | |
4269 | ||
4270 | obj_priv->user_pin_count++; | |
4271 | obj_priv->pin_filp = file_priv; | |
4272 | if (obj_priv->user_pin_count == 1) { | |
4273 | ret = i915_gem_object_pin(obj, args->alignment); | |
4274 | if (ret != 0) { | |
4275 | drm_gem_object_unreference(obj); | |
4276 | mutex_unlock(&dev->struct_mutex); | |
4277 | return ret; | |
4278 | } | |
673a394b EA |
4279 | } |
4280 | ||
4281 | /* XXX - flush the CPU caches for pinned objects | |
4282 | * as the X server doesn't manage domains yet | |
4283 | */ | |
e47c68e9 | 4284 | i915_gem_object_flush_cpu_write_domain(obj); |
673a394b EA |
4285 | args->offset = obj_priv->gtt_offset; |
4286 | drm_gem_object_unreference(obj); | |
4287 | mutex_unlock(&dev->struct_mutex); | |
4288 | ||
4289 | return 0; | |
4290 | } | |
4291 | ||
4292 | int | |
4293 | i915_gem_unpin_ioctl(struct drm_device *dev, void *data, | |
4294 | struct drm_file *file_priv) | |
4295 | { | |
4296 | struct drm_i915_gem_pin *args = data; | |
4297 | struct drm_gem_object *obj; | |
79e53945 | 4298 | struct drm_i915_gem_object *obj_priv; |
673a394b EA |
4299 | |
4300 | mutex_lock(&dev->struct_mutex); | |
4301 | ||
4302 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
4303 | if (obj == NULL) { | |
4304 | DRM_ERROR("Bad handle in i915_gem_unpin_ioctl(): %d\n", | |
4305 | args->handle); | |
4306 | mutex_unlock(&dev->struct_mutex); | |
4307 | return -EBADF; | |
4308 | } | |
4309 | ||
23010e43 | 4310 | obj_priv = to_intel_bo(obj); |
79e53945 JB |
4311 | if (obj_priv->pin_filp != file_priv) { |
4312 | DRM_ERROR("Not pinned by caller in i915_gem_pin_ioctl(): %d\n", | |
4313 | args->handle); | |
4314 | drm_gem_object_unreference(obj); | |
4315 | mutex_unlock(&dev->struct_mutex); | |
4316 | return -EINVAL; | |
4317 | } | |
4318 | obj_priv->user_pin_count--; | |
4319 | if (obj_priv->user_pin_count == 0) { | |
4320 | obj_priv->pin_filp = NULL; | |
4321 | i915_gem_object_unpin(obj); | |
4322 | } | |
673a394b EA |
4323 | |
4324 | drm_gem_object_unreference(obj); | |
4325 | mutex_unlock(&dev->struct_mutex); | |
4326 | return 0; | |
4327 | } | |
4328 | ||
4329 | int | |
4330 | i915_gem_busy_ioctl(struct drm_device *dev, void *data, | |
4331 | struct drm_file *file_priv) | |
4332 | { | |
4333 | struct drm_i915_gem_busy *args = data; | |
4334 | struct drm_gem_object *obj; | |
4335 | struct drm_i915_gem_object *obj_priv; | |
4336 | ||
673a394b EA |
4337 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
4338 | if (obj == NULL) { | |
4339 | DRM_ERROR("Bad handle in i915_gem_busy_ioctl(): %d\n", | |
4340 | args->handle); | |
673a394b EA |
4341 | return -EBADF; |
4342 | } | |
4343 | ||
b1ce786c | 4344 | mutex_lock(&dev->struct_mutex); |
f21289b3 EA |
4345 | /* Update the active list for the hardware's current position. |
4346 | * Otherwise this only updates on a delayed timer or when irqs are | |
4347 | * actually unmasked, and our working set ends up being larger than | |
4348 | * required. | |
4349 | */ | |
4350 | i915_gem_retire_requests(dev); | |
4351 | ||
23010e43 | 4352 | obj_priv = to_intel_bo(obj); |
c4de0a5d EA |
4353 | /* Don't count being on the flushing list against the object being |
4354 | * done. Otherwise, a buffer left on the flushing list but not getting | |
4355 | * flushed (because nobody's flushing that domain) won't ever return | |
4356 | * unbusy and get reused by libdrm's bo cache. The other expected | |
4357 | * consumer of this interface, OpenGL's occlusion queries, also specs | |
4358 | * that the objects get unbusy "eventually" without any interference. | |
4359 | */ | |
4360 | args->busy = obj_priv->active && obj_priv->last_rendering_seqno != 0; | |
673a394b EA |
4361 | |
4362 | drm_gem_object_unreference(obj); | |
4363 | mutex_unlock(&dev->struct_mutex); | |
4364 | return 0; | |
4365 | } | |
4366 | ||
4367 | int | |
4368 | i915_gem_throttle_ioctl(struct drm_device *dev, void *data, | |
4369 | struct drm_file *file_priv) | |
4370 | { | |
4371 | return i915_gem_ring_throttle(dev, file_priv); | |
4372 | } | |
4373 | ||
3ef94daa CW |
4374 | int |
4375 | i915_gem_madvise_ioctl(struct drm_device *dev, void *data, | |
4376 | struct drm_file *file_priv) | |
4377 | { | |
4378 | struct drm_i915_gem_madvise *args = data; | |
4379 | struct drm_gem_object *obj; | |
4380 | struct drm_i915_gem_object *obj_priv; | |
4381 | ||
4382 | switch (args->madv) { | |
4383 | case I915_MADV_DONTNEED: | |
4384 | case I915_MADV_WILLNEED: | |
4385 | break; | |
4386 | default: | |
4387 | return -EINVAL; | |
4388 | } | |
4389 | ||
4390 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
4391 | if (obj == NULL) { | |
4392 | DRM_ERROR("Bad handle in i915_gem_madvise_ioctl(): %d\n", | |
4393 | args->handle); | |
4394 | return -EBADF; | |
4395 | } | |
4396 | ||
4397 | mutex_lock(&dev->struct_mutex); | |
23010e43 | 4398 | obj_priv = to_intel_bo(obj); |
3ef94daa CW |
4399 | |
4400 | if (obj_priv->pin_count) { | |
4401 | drm_gem_object_unreference(obj); | |
4402 | mutex_unlock(&dev->struct_mutex); | |
4403 | ||
4404 | DRM_ERROR("Attempted i915_gem_madvise_ioctl() on a pinned object\n"); | |
4405 | return -EINVAL; | |
4406 | } | |
4407 | ||
bb6baf76 CW |
4408 | if (obj_priv->madv != __I915_MADV_PURGED) |
4409 | obj_priv->madv = args->madv; | |
3ef94daa | 4410 | |
2d7ef395 CW |
4411 | /* if the object is no longer bound, discard its backing storage */ |
4412 | if (i915_gem_object_is_purgeable(obj_priv) && | |
4413 | obj_priv->gtt_space == NULL) | |
4414 | i915_gem_object_truncate(obj); | |
4415 | ||
bb6baf76 CW |
4416 | args->retained = obj_priv->madv != __I915_MADV_PURGED; |
4417 | ||
3ef94daa CW |
4418 | drm_gem_object_unreference(obj); |
4419 | mutex_unlock(&dev->struct_mutex); | |
4420 | ||
4421 | return 0; | |
4422 | } | |
4423 | ||
673a394b EA |
4424 | int i915_gem_init_object(struct drm_gem_object *obj) |
4425 | { | |
4426 | struct drm_i915_gem_object *obj_priv; | |
4427 | ||
9a298b2a | 4428 | obj_priv = kzalloc(sizeof(*obj_priv), GFP_KERNEL); |
673a394b EA |
4429 | if (obj_priv == NULL) |
4430 | return -ENOMEM; | |
4431 | ||
4432 | /* | |
4433 | * We've just allocated pages from the kernel, | |
4434 | * so they've just been written by the CPU with | |
4435 | * zeros. They'll need to be clflushed before we | |
4436 | * use them with the GPU. | |
4437 | */ | |
4438 | obj->write_domain = I915_GEM_DOMAIN_CPU; | |
4439 | obj->read_domains = I915_GEM_DOMAIN_CPU; | |
4440 | ||
ba1eb1d8 KP |
4441 | obj_priv->agp_type = AGP_USER_MEMORY; |
4442 | ||
673a394b EA |
4443 | obj->driver_private = obj_priv; |
4444 | obj_priv->obj = obj; | |
de151cf6 | 4445 | obj_priv->fence_reg = I915_FENCE_REG_NONE; |
673a394b | 4446 | INIT_LIST_HEAD(&obj_priv->list); |
99fcb766 | 4447 | INIT_LIST_HEAD(&obj_priv->gpu_write_list); |
a09ba7fa | 4448 | INIT_LIST_HEAD(&obj_priv->fence_list); |
3ef94daa | 4449 | obj_priv->madv = I915_MADV_WILLNEED; |
de151cf6 | 4450 | |
1c5d22f7 | 4451 | trace_i915_gem_object_create(obj); |
de151cf6 | 4452 | |
673a394b EA |
4453 | return 0; |
4454 | } | |
4455 | ||
4456 | void i915_gem_free_object(struct drm_gem_object *obj) | |
4457 | { | |
de151cf6 | 4458 | struct drm_device *dev = obj->dev; |
23010e43 | 4459 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b | 4460 | |
1c5d22f7 CW |
4461 | trace_i915_gem_object_destroy(obj); |
4462 | ||
673a394b EA |
4463 | while (obj_priv->pin_count > 0) |
4464 | i915_gem_object_unpin(obj); | |
4465 | ||
71acb5eb DA |
4466 | if (obj_priv->phys_obj) |
4467 | i915_gem_detach_phys_object(dev, obj); | |
4468 | ||
673a394b EA |
4469 | i915_gem_object_unbind(obj); |
4470 | ||
7e616158 CW |
4471 | if (obj_priv->mmap_offset) |
4472 | i915_gem_free_mmap_offset(obj); | |
de151cf6 | 4473 | |
9a298b2a | 4474 | kfree(obj_priv->page_cpu_valid); |
280b713b | 4475 | kfree(obj_priv->bit_17); |
9a298b2a | 4476 | kfree(obj->driver_private); |
fd632aa3 DV |
4477 | |
4478 | drm_gem_object_release(obj); | |
4479 | kfree(obj); | |
673a394b EA |
4480 | } |
4481 | ||
ab5ee576 | 4482 | /** Unbinds all inactive objects. */ |
673a394b | 4483 | static int |
ab5ee576 | 4484 | i915_gem_evict_from_inactive_list(struct drm_device *dev) |
673a394b | 4485 | { |
ab5ee576 | 4486 | drm_i915_private_t *dev_priv = dev->dev_private; |
673a394b | 4487 | |
ab5ee576 CW |
4488 | while (!list_empty(&dev_priv->mm.inactive_list)) { |
4489 | struct drm_gem_object *obj; | |
4490 | int ret; | |
673a394b | 4491 | |
ab5ee576 CW |
4492 | obj = list_first_entry(&dev_priv->mm.inactive_list, |
4493 | struct drm_i915_gem_object, | |
4494 | list)->obj; | |
673a394b EA |
4495 | |
4496 | ret = i915_gem_object_unbind(obj); | |
4497 | if (ret != 0) { | |
ab5ee576 | 4498 | DRM_ERROR("Error unbinding object: %d\n", ret); |
673a394b EA |
4499 | return ret; |
4500 | } | |
4501 | } | |
4502 | ||
673a394b EA |
4503 | return 0; |
4504 | } | |
4505 | ||
29105ccc CW |
4506 | int |
4507 | i915_gem_idle(struct drm_device *dev) | |
4508 | { | |
4509 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4510 | int ret; | |
28dfe52a | 4511 | |
29105ccc | 4512 | mutex_lock(&dev->struct_mutex); |
1c5d22f7 | 4513 | |
29105ccc CW |
4514 | if (dev_priv->mm.suspended || dev_priv->ring.ring_obj == NULL) { |
4515 | mutex_unlock(&dev->struct_mutex); | |
4516 | return 0; | |
28dfe52a EA |
4517 | } |
4518 | ||
29105ccc | 4519 | ret = i915_gpu_idle(dev); |
6dbe2772 KP |
4520 | if (ret) { |
4521 | mutex_unlock(&dev->struct_mutex); | |
673a394b | 4522 | return ret; |
6dbe2772 | 4523 | } |
673a394b | 4524 | |
29105ccc CW |
4525 | /* Under UMS, be paranoid and evict. */ |
4526 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) { | |
4527 | ret = i915_gem_evict_from_inactive_list(dev); | |
4528 | if (ret) { | |
4529 | mutex_unlock(&dev->struct_mutex); | |
4530 | return ret; | |
4531 | } | |
4532 | } | |
4533 | ||
4534 | /* Hack! Don't let anybody do execbuf while we don't control the chip. | |
4535 | * We need to replace this with a semaphore, or something. | |
4536 | * And not confound mm.suspended! | |
4537 | */ | |
4538 | dev_priv->mm.suspended = 1; | |
4539 | del_timer(&dev_priv->hangcheck_timer); | |
4540 | ||
4541 | i915_kernel_lost_context(dev); | |
6dbe2772 | 4542 | i915_gem_cleanup_ringbuffer(dev); |
29105ccc | 4543 | |
6dbe2772 KP |
4544 | mutex_unlock(&dev->struct_mutex); |
4545 | ||
29105ccc CW |
4546 | /* Cancel the retire work handler, which should be idle now. */ |
4547 | cancel_delayed_work_sync(&dev_priv->mm.retire_work); | |
4548 | ||
673a394b EA |
4549 | return 0; |
4550 | } | |
4551 | ||
4552 | static int | |
4553 | i915_gem_init_hws(struct drm_device *dev) | |
4554 | { | |
4555 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4556 | struct drm_gem_object *obj; | |
4557 | struct drm_i915_gem_object *obj_priv; | |
4558 | int ret; | |
4559 | ||
4560 | /* If we need a physical address for the status page, it's already | |
4561 | * initialized at driver load time. | |
4562 | */ | |
4563 | if (!I915_NEED_GFX_HWS(dev)) | |
4564 | return 0; | |
4565 | ||
4566 | obj = drm_gem_object_alloc(dev, 4096); | |
4567 | if (obj == NULL) { | |
4568 | DRM_ERROR("Failed to allocate status page\n"); | |
4569 | return -ENOMEM; | |
4570 | } | |
23010e43 | 4571 | obj_priv = to_intel_bo(obj); |
ba1eb1d8 | 4572 | obj_priv->agp_type = AGP_USER_CACHED_MEMORY; |
673a394b EA |
4573 | |
4574 | ret = i915_gem_object_pin(obj, 4096); | |
4575 | if (ret != 0) { | |
4576 | drm_gem_object_unreference(obj); | |
4577 | return ret; | |
4578 | } | |
4579 | ||
4580 | dev_priv->status_gfx_addr = obj_priv->gtt_offset; | |
673a394b | 4581 | |
856fa198 | 4582 | dev_priv->hw_status_page = kmap(obj_priv->pages[0]); |
ba1eb1d8 | 4583 | if (dev_priv->hw_status_page == NULL) { |
673a394b EA |
4584 | DRM_ERROR("Failed to map status page.\n"); |
4585 | memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map)); | |
3eb2ee77 | 4586 | i915_gem_object_unpin(obj); |
673a394b EA |
4587 | drm_gem_object_unreference(obj); |
4588 | return -EINVAL; | |
4589 | } | |
4590 | dev_priv->hws_obj = obj; | |
673a394b | 4591 | memset(dev_priv->hw_status_page, 0, PAGE_SIZE); |
f6e450a6 EA |
4592 | if (IS_GEN6(dev)) { |
4593 | I915_WRITE(HWS_PGA_GEN6, dev_priv->status_gfx_addr); | |
4594 | I915_READ(HWS_PGA_GEN6); /* posting read */ | |
4595 | } else { | |
4596 | I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr); | |
4597 | I915_READ(HWS_PGA); /* posting read */ | |
4598 | } | |
44d98a61 | 4599 | DRM_DEBUG_DRIVER("hws offset: 0x%08x\n", dev_priv->status_gfx_addr); |
673a394b EA |
4600 | |
4601 | return 0; | |
4602 | } | |
4603 | ||
85a7bb98 CW |
4604 | static void |
4605 | i915_gem_cleanup_hws(struct drm_device *dev) | |
4606 | { | |
4607 | drm_i915_private_t *dev_priv = dev->dev_private; | |
bab2d1f6 CW |
4608 | struct drm_gem_object *obj; |
4609 | struct drm_i915_gem_object *obj_priv; | |
85a7bb98 CW |
4610 | |
4611 | if (dev_priv->hws_obj == NULL) | |
4612 | return; | |
4613 | ||
bab2d1f6 | 4614 | obj = dev_priv->hws_obj; |
23010e43 | 4615 | obj_priv = to_intel_bo(obj); |
bab2d1f6 | 4616 | |
856fa198 | 4617 | kunmap(obj_priv->pages[0]); |
85a7bb98 CW |
4618 | i915_gem_object_unpin(obj); |
4619 | drm_gem_object_unreference(obj); | |
4620 | dev_priv->hws_obj = NULL; | |
bab2d1f6 | 4621 | |
85a7bb98 CW |
4622 | memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map)); |
4623 | dev_priv->hw_status_page = NULL; | |
4624 | ||
4625 | /* Write high address into HWS_PGA when disabling. */ | |
4626 | I915_WRITE(HWS_PGA, 0x1ffff000); | |
4627 | } | |
4628 | ||
79e53945 | 4629 | int |
673a394b EA |
4630 | i915_gem_init_ringbuffer(struct drm_device *dev) |
4631 | { | |
4632 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4633 | struct drm_gem_object *obj; | |
4634 | struct drm_i915_gem_object *obj_priv; | |
79e53945 | 4635 | drm_i915_ring_buffer_t *ring = &dev_priv->ring; |
673a394b | 4636 | int ret; |
50aa253d | 4637 | u32 head; |
673a394b EA |
4638 | |
4639 | ret = i915_gem_init_hws(dev); | |
4640 | if (ret != 0) | |
4641 | return ret; | |
4642 | ||
4643 | obj = drm_gem_object_alloc(dev, 128 * 1024); | |
4644 | if (obj == NULL) { | |
4645 | DRM_ERROR("Failed to allocate ringbuffer\n"); | |
85a7bb98 | 4646 | i915_gem_cleanup_hws(dev); |
673a394b EA |
4647 | return -ENOMEM; |
4648 | } | |
23010e43 | 4649 | obj_priv = to_intel_bo(obj); |
673a394b EA |
4650 | |
4651 | ret = i915_gem_object_pin(obj, 4096); | |
4652 | if (ret != 0) { | |
4653 | drm_gem_object_unreference(obj); | |
85a7bb98 | 4654 | i915_gem_cleanup_hws(dev); |
673a394b EA |
4655 | return ret; |
4656 | } | |
4657 | ||
4658 | /* Set up the kernel mapping for the ring. */ | |
79e53945 | 4659 | ring->Size = obj->size; |
673a394b | 4660 | |
79e53945 JB |
4661 | ring->map.offset = dev->agp->base + obj_priv->gtt_offset; |
4662 | ring->map.size = obj->size; | |
4663 | ring->map.type = 0; | |
4664 | ring->map.flags = 0; | |
4665 | ring->map.mtrr = 0; | |
673a394b | 4666 | |
79e53945 JB |
4667 | drm_core_ioremap_wc(&ring->map, dev); |
4668 | if (ring->map.handle == NULL) { | |
673a394b EA |
4669 | DRM_ERROR("Failed to map ringbuffer.\n"); |
4670 | memset(&dev_priv->ring, 0, sizeof(dev_priv->ring)); | |
47ed185a | 4671 | i915_gem_object_unpin(obj); |
673a394b | 4672 | drm_gem_object_unreference(obj); |
85a7bb98 | 4673 | i915_gem_cleanup_hws(dev); |
673a394b EA |
4674 | return -EINVAL; |
4675 | } | |
79e53945 JB |
4676 | ring->ring_obj = obj; |
4677 | ring->virtual_start = ring->map.handle; | |
673a394b EA |
4678 | |
4679 | /* Stop the ring if it's running. */ | |
4680 | I915_WRITE(PRB0_CTL, 0); | |
673a394b | 4681 | I915_WRITE(PRB0_TAIL, 0); |
50aa253d | 4682 | I915_WRITE(PRB0_HEAD, 0); |
673a394b EA |
4683 | |
4684 | /* Initialize the ring. */ | |
4685 | I915_WRITE(PRB0_START, obj_priv->gtt_offset); | |
50aa253d KP |
4686 | head = I915_READ(PRB0_HEAD) & HEAD_ADDR; |
4687 | ||
4688 | /* G45 ring initialization fails to reset head to zero */ | |
4689 | if (head != 0) { | |
4690 | DRM_ERROR("Ring head not reset to zero " | |
4691 | "ctl %08x head %08x tail %08x start %08x\n", | |
4692 | I915_READ(PRB0_CTL), | |
4693 | I915_READ(PRB0_HEAD), | |
4694 | I915_READ(PRB0_TAIL), | |
4695 | I915_READ(PRB0_START)); | |
4696 | I915_WRITE(PRB0_HEAD, 0); | |
4697 | ||
4698 | DRM_ERROR("Ring head forced to zero " | |
4699 | "ctl %08x head %08x tail %08x start %08x\n", | |
4700 | I915_READ(PRB0_CTL), | |
4701 | I915_READ(PRB0_HEAD), | |
4702 | I915_READ(PRB0_TAIL), | |
4703 | I915_READ(PRB0_START)); | |
4704 | } | |
4705 | ||
673a394b EA |
4706 | I915_WRITE(PRB0_CTL, |
4707 | ((obj->size - 4096) & RING_NR_PAGES) | | |
4708 | RING_NO_REPORT | | |
4709 | RING_VALID); | |
4710 | ||
50aa253d KP |
4711 | head = I915_READ(PRB0_HEAD) & HEAD_ADDR; |
4712 | ||
4713 | /* If the head is still not zero, the ring is dead */ | |
4714 | if (head != 0) { | |
4715 | DRM_ERROR("Ring initialization failed " | |
4716 | "ctl %08x head %08x tail %08x start %08x\n", | |
4717 | I915_READ(PRB0_CTL), | |
4718 | I915_READ(PRB0_HEAD), | |
4719 | I915_READ(PRB0_TAIL), | |
4720 | I915_READ(PRB0_START)); | |
4721 | return -EIO; | |
4722 | } | |
4723 | ||
673a394b | 4724 | /* Update our cache of the ring state */ |
79e53945 JB |
4725 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
4726 | i915_kernel_lost_context(dev); | |
4727 | else { | |
4728 | ring->head = I915_READ(PRB0_HEAD) & HEAD_ADDR; | |
4729 | ring->tail = I915_READ(PRB0_TAIL) & TAIL_ADDR; | |
4730 | ring->space = ring->head - (ring->tail + 8); | |
4731 | if (ring->space < 0) | |
4732 | ring->space += ring->Size; | |
4733 | } | |
673a394b | 4734 | |
71cf39b1 EA |
4735 | if (IS_I9XX(dev) && !IS_GEN3(dev)) { |
4736 | I915_WRITE(MI_MODE, | |
4737 | (VS_TIMER_DISPATCH) << 16 | VS_TIMER_DISPATCH); | |
4738 | } | |
4739 | ||
673a394b EA |
4740 | return 0; |
4741 | } | |
4742 | ||
79e53945 | 4743 | void |
673a394b EA |
4744 | i915_gem_cleanup_ringbuffer(struct drm_device *dev) |
4745 | { | |
4746 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4747 | ||
4748 | if (dev_priv->ring.ring_obj == NULL) | |
4749 | return; | |
4750 | ||
4751 | drm_core_ioremapfree(&dev_priv->ring.map, dev); | |
4752 | ||
4753 | i915_gem_object_unpin(dev_priv->ring.ring_obj); | |
4754 | drm_gem_object_unreference(dev_priv->ring.ring_obj); | |
4755 | dev_priv->ring.ring_obj = NULL; | |
4756 | memset(&dev_priv->ring, 0, sizeof(dev_priv->ring)); | |
4757 | ||
85a7bb98 | 4758 | i915_gem_cleanup_hws(dev); |
673a394b EA |
4759 | } |
4760 | ||
4761 | int | |
4762 | i915_gem_entervt_ioctl(struct drm_device *dev, void *data, | |
4763 | struct drm_file *file_priv) | |
4764 | { | |
4765 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4766 | int ret; | |
4767 | ||
79e53945 JB |
4768 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
4769 | return 0; | |
4770 | ||
ba1234d1 | 4771 | if (atomic_read(&dev_priv->mm.wedged)) { |
673a394b | 4772 | DRM_ERROR("Reenabling wedged hardware, good luck\n"); |
ba1234d1 | 4773 | atomic_set(&dev_priv->mm.wedged, 0); |
673a394b EA |
4774 | } |
4775 | ||
673a394b | 4776 | mutex_lock(&dev->struct_mutex); |
9bb2d6f9 EA |
4777 | dev_priv->mm.suspended = 0; |
4778 | ||
4779 | ret = i915_gem_init_ringbuffer(dev); | |
d816f6ac WF |
4780 | if (ret != 0) { |
4781 | mutex_unlock(&dev->struct_mutex); | |
9bb2d6f9 | 4782 | return ret; |
d816f6ac | 4783 | } |
9bb2d6f9 | 4784 | |
5e118f41 | 4785 | spin_lock(&dev_priv->mm.active_list_lock); |
673a394b | 4786 | BUG_ON(!list_empty(&dev_priv->mm.active_list)); |
5e118f41 CW |
4787 | spin_unlock(&dev_priv->mm.active_list_lock); |
4788 | ||
673a394b EA |
4789 | BUG_ON(!list_empty(&dev_priv->mm.flushing_list)); |
4790 | BUG_ON(!list_empty(&dev_priv->mm.inactive_list)); | |
4791 | BUG_ON(!list_empty(&dev_priv->mm.request_list)); | |
673a394b | 4792 | mutex_unlock(&dev->struct_mutex); |
dbb19d30 KH |
4793 | |
4794 | drm_irq_install(dev); | |
4795 | ||
673a394b EA |
4796 | return 0; |
4797 | } | |
4798 | ||
4799 | int | |
4800 | i915_gem_leavevt_ioctl(struct drm_device *dev, void *data, | |
4801 | struct drm_file *file_priv) | |
4802 | { | |
79e53945 JB |
4803 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
4804 | return 0; | |
4805 | ||
dbb19d30 | 4806 | drm_irq_uninstall(dev); |
e6890f6f | 4807 | return i915_gem_idle(dev); |
673a394b EA |
4808 | } |
4809 | ||
4810 | void | |
4811 | i915_gem_lastclose(struct drm_device *dev) | |
4812 | { | |
4813 | int ret; | |
673a394b | 4814 | |
e806b495 EA |
4815 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
4816 | return; | |
4817 | ||
6dbe2772 KP |
4818 | ret = i915_gem_idle(dev); |
4819 | if (ret) | |
4820 | DRM_ERROR("failed to idle hardware: %d\n", ret); | |
673a394b EA |
4821 | } |
4822 | ||
4823 | void | |
4824 | i915_gem_load(struct drm_device *dev) | |
4825 | { | |
b5aa8a0f | 4826 | int i; |
673a394b EA |
4827 | drm_i915_private_t *dev_priv = dev->dev_private; |
4828 | ||
5e118f41 | 4829 | spin_lock_init(&dev_priv->mm.active_list_lock); |
673a394b EA |
4830 | INIT_LIST_HEAD(&dev_priv->mm.active_list); |
4831 | INIT_LIST_HEAD(&dev_priv->mm.flushing_list); | |
99fcb766 | 4832 | INIT_LIST_HEAD(&dev_priv->mm.gpu_write_list); |
673a394b EA |
4833 | INIT_LIST_HEAD(&dev_priv->mm.inactive_list); |
4834 | INIT_LIST_HEAD(&dev_priv->mm.request_list); | |
a09ba7fa | 4835 | INIT_LIST_HEAD(&dev_priv->mm.fence_list); |
673a394b EA |
4836 | INIT_DELAYED_WORK(&dev_priv->mm.retire_work, |
4837 | i915_gem_retire_work_handler); | |
4838 | dev_priv->mm.next_gem_seqno = 1; | |
4839 | ||
31169714 CW |
4840 | spin_lock(&shrink_list_lock); |
4841 | list_add(&dev_priv->mm.shrink_list, &shrink_list); | |
4842 | spin_unlock(&shrink_list_lock); | |
4843 | ||
de151cf6 | 4844 | /* Old X drivers will take 0-2 for front, back, depth buffers */ |
b397c836 EA |
4845 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
4846 | dev_priv->fence_reg_start = 3; | |
de151cf6 | 4847 | |
0f973f27 | 4848 | if (IS_I965G(dev) || IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) |
de151cf6 JB |
4849 | dev_priv->num_fence_regs = 16; |
4850 | else | |
4851 | dev_priv->num_fence_regs = 8; | |
4852 | ||
b5aa8a0f GH |
4853 | /* Initialize fence registers to zero */ |
4854 | if (IS_I965G(dev)) { | |
4855 | for (i = 0; i < 16; i++) | |
4856 | I915_WRITE64(FENCE_REG_965_0 + (i * 8), 0); | |
4857 | } else { | |
4858 | for (i = 0; i < 8; i++) | |
4859 | I915_WRITE(FENCE_REG_830_0 + (i * 4), 0); | |
4860 | if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) | |
4861 | for (i = 0; i < 8; i++) | |
4862 | I915_WRITE(FENCE_REG_945_8 + (i * 4), 0); | |
4863 | } | |
673a394b | 4864 | i915_gem_detect_bit_6_swizzle(dev); |
6b95a207 | 4865 | init_waitqueue_head(&dev_priv->pending_flip_queue); |
673a394b | 4866 | } |
71acb5eb DA |
4867 | |
4868 | /* | |
4869 | * Create a physically contiguous memory object for this object | |
4870 | * e.g. for cursor + overlay regs | |
4871 | */ | |
4872 | int i915_gem_init_phys_object(struct drm_device *dev, | |
4873 | int id, int size) | |
4874 | { | |
4875 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4876 | struct drm_i915_gem_phys_object *phys_obj; | |
4877 | int ret; | |
4878 | ||
4879 | if (dev_priv->mm.phys_objs[id - 1] || !size) | |
4880 | return 0; | |
4881 | ||
9a298b2a | 4882 | phys_obj = kzalloc(sizeof(struct drm_i915_gem_phys_object), GFP_KERNEL); |
71acb5eb DA |
4883 | if (!phys_obj) |
4884 | return -ENOMEM; | |
4885 | ||
4886 | phys_obj->id = id; | |
4887 | ||
e6be8d9d | 4888 | phys_obj->handle = drm_pci_alloc(dev, size, 0); |
71acb5eb DA |
4889 | if (!phys_obj->handle) { |
4890 | ret = -ENOMEM; | |
4891 | goto kfree_obj; | |
4892 | } | |
4893 | #ifdef CONFIG_X86 | |
4894 | set_memory_wc((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); | |
4895 | #endif | |
4896 | ||
4897 | dev_priv->mm.phys_objs[id - 1] = phys_obj; | |
4898 | ||
4899 | return 0; | |
4900 | kfree_obj: | |
9a298b2a | 4901 | kfree(phys_obj); |
71acb5eb DA |
4902 | return ret; |
4903 | } | |
4904 | ||
4905 | void i915_gem_free_phys_object(struct drm_device *dev, int id) | |
4906 | { | |
4907 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4908 | struct drm_i915_gem_phys_object *phys_obj; | |
4909 | ||
4910 | if (!dev_priv->mm.phys_objs[id - 1]) | |
4911 | return; | |
4912 | ||
4913 | phys_obj = dev_priv->mm.phys_objs[id - 1]; | |
4914 | if (phys_obj->cur_obj) { | |
4915 | i915_gem_detach_phys_object(dev, phys_obj->cur_obj); | |
4916 | } | |
4917 | ||
4918 | #ifdef CONFIG_X86 | |
4919 | set_memory_wb((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); | |
4920 | #endif | |
4921 | drm_pci_free(dev, phys_obj->handle); | |
4922 | kfree(phys_obj); | |
4923 | dev_priv->mm.phys_objs[id - 1] = NULL; | |
4924 | } | |
4925 | ||
4926 | void i915_gem_free_all_phys_object(struct drm_device *dev) | |
4927 | { | |
4928 | int i; | |
4929 | ||
260883c8 | 4930 | for (i = I915_GEM_PHYS_CURSOR_0; i <= I915_MAX_PHYS_OBJECT; i++) |
71acb5eb DA |
4931 | i915_gem_free_phys_object(dev, i); |
4932 | } | |
4933 | ||
4934 | void i915_gem_detach_phys_object(struct drm_device *dev, | |
4935 | struct drm_gem_object *obj) | |
4936 | { | |
4937 | struct drm_i915_gem_object *obj_priv; | |
4938 | int i; | |
4939 | int ret; | |
4940 | int page_count; | |
4941 | ||
23010e43 | 4942 | obj_priv = to_intel_bo(obj); |
71acb5eb DA |
4943 | if (!obj_priv->phys_obj) |
4944 | return; | |
4945 | ||
4bdadb97 | 4946 | ret = i915_gem_object_get_pages(obj, 0); |
71acb5eb DA |
4947 | if (ret) |
4948 | goto out; | |
4949 | ||
4950 | page_count = obj->size / PAGE_SIZE; | |
4951 | ||
4952 | for (i = 0; i < page_count; i++) { | |
856fa198 | 4953 | char *dst = kmap_atomic(obj_priv->pages[i], KM_USER0); |
71acb5eb DA |
4954 | char *src = obj_priv->phys_obj->handle->vaddr + (i * PAGE_SIZE); |
4955 | ||
4956 | memcpy(dst, src, PAGE_SIZE); | |
4957 | kunmap_atomic(dst, KM_USER0); | |
4958 | } | |
856fa198 | 4959 | drm_clflush_pages(obj_priv->pages, page_count); |
71acb5eb | 4960 | drm_agp_chipset_flush(dev); |
d78b47b9 CW |
4961 | |
4962 | i915_gem_object_put_pages(obj); | |
71acb5eb DA |
4963 | out: |
4964 | obj_priv->phys_obj->cur_obj = NULL; | |
4965 | obj_priv->phys_obj = NULL; | |
4966 | } | |
4967 | ||
4968 | int | |
4969 | i915_gem_attach_phys_object(struct drm_device *dev, | |
4970 | struct drm_gem_object *obj, int id) | |
4971 | { | |
4972 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4973 | struct drm_i915_gem_object *obj_priv; | |
4974 | int ret = 0; | |
4975 | int page_count; | |
4976 | int i; | |
4977 | ||
4978 | if (id > I915_MAX_PHYS_OBJECT) | |
4979 | return -EINVAL; | |
4980 | ||
23010e43 | 4981 | obj_priv = to_intel_bo(obj); |
71acb5eb DA |
4982 | |
4983 | if (obj_priv->phys_obj) { | |
4984 | if (obj_priv->phys_obj->id == id) | |
4985 | return 0; | |
4986 | i915_gem_detach_phys_object(dev, obj); | |
4987 | } | |
4988 | ||
4989 | ||
4990 | /* create a new object */ | |
4991 | if (!dev_priv->mm.phys_objs[id - 1]) { | |
4992 | ret = i915_gem_init_phys_object(dev, id, | |
4993 | obj->size); | |
4994 | if (ret) { | |
aeb565df | 4995 | DRM_ERROR("failed to init phys object %d size: %zu\n", id, obj->size); |
71acb5eb DA |
4996 | goto out; |
4997 | } | |
4998 | } | |
4999 | ||
5000 | /* bind to the object */ | |
5001 | obj_priv->phys_obj = dev_priv->mm.phys_objs[id - 1]; | |
5002 | obj_priv->phys_obj->cur_obj = obj; | |
5003 | ||
4bdadb97 | 5004 | ret = i915_gem_object_get_pages(obj, 0); |
71acb5eb DA |
5005 | if (ret) { |
5006 | DRM_ERROR("failed to get page list\n"); | |
5007 | goto out; | |
5008 | } | |
5009 | ||
5010 | page_count = obj->size / PAGE_SIZE; | |
5011 | ||
5012 | for (i = 0; i < page_count; i++) { | |
856fa198 | 5013 | char *src = kmap_atomic(obj_priv->pages[i], KM_USER0); |
71acb5eb DA |
5014 | char *dst = obj_priv->phys_obj->handle->vaddr + (i * PAGE_SIZE); |
5015 | ||
5016 | memcpy(dst, src, PAGE_SIZE); | |
5017 | kunmap_atomic(src, KM_USER0); | |
5018 | } | |
5019 | ||
d78b47b9 CW |
5020 | i915_gem_object_put_pages(obj); |
5021 | ||
71acb5eb DA |
5022 | return 0; |
5023 | out: | |
5024 | return ret; | |
5025 | } | |
5026 | ||
5027 | static int | |
5028 | i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj, | |
5029 | struct drm_i915_gem_pwrite *args, | |
5030 | struct drm_file *file_priv) | |
5031 | { | |
23010e43 | 5032 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
71acb5eb DA |
5033 | void *obj_addr; |
5034 | int ret; | |
5035 | char __user *user_data; | |
5036 | ||
5037 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
5038 | obj_addr = obj_priv->phys_obj->handle->vaddr + args->offset; | |
5039 | ||
44d98a61 | 5040 | DRM_DEBUG_DRIVER("obj_addr %p, %lld\n", obj_addr, args->size); |
71acb5eb DA |
5041 | ret = copy_from_user(obj_addr, user_data, args->size); |
5042 | if (ret) | |
5043 | return -EFAULT; | |
5044 | ||
5045 | drm_agp_chipset_flush(dev); | |
5046 | return 0; | |
5047 | } | |
b962442e EA |
5048 | |
5049 | void i915_gem_release(struct drm_device * dev, struct drm_file *file_priv) | |
5050 | { | |
5051 | struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; | |
5052 | ||
5053 | /* Clean up our request list when the client is going away, so that | |
5054 | * later retire_requests won't dereference our soon-to-be-gone | |
5055 | * file_priv. | |
5056 | */ | |
5057 | mutex_lock(&dev->struct_mutex); | |
5058 | while (!list_empty(&i915_file_priv->mm.request_list)) | |
5059 | list_del_init(i915_file_priv->mm.request_list.next); | |
5060 | mutex_unlock(&dev->struct_mutex); | |
5061 | } | |
31169714 | 5062 | |
31169714 CW |
5063 | static int |
5064 | i915_gem_shrink(int nr_to_scan, gfp_t gfp_mask) | |
5065 | { | |
5066 | drm_i915_private_t *dev_priv, *next_dev; | |
5067 | struct drm_i915_gem_object *obj_priv, *next_obj; | |
5068 | int cnt = 0; | |
5069 | int would_deadlock = 1; | |
5070 | ||
5071 | /* "fast-path" to count number of available objects */ | |
5072 | if (nr_to_scan == 0) { | |
5073 | spin_lock(&shrink_list_lock); | |
5074 | list_for_each_entry(dev_priv, &shrink_list, mm.shrink_list) { | |
5075 | struct drm_device *dev = dev_priv->dev; | |
5076 | ||
5077 | if (mutex_trylock(&dev->struct_mutex)) { | |
5078 | list_for_each_entry(obj_priv, | |
5079 | &dev_priv->mm.inactive_list, | |
5080 | list) | |
5081 | cnt++; | |
5082 | mutex_unlock(&dev->struct_mutex); | |
5083 | } | |
5084 | } | |
5085 | spin_unlock(&shrink_list_lock); | |
5086 | ||
5087 | return (cnt / 100) * sysctl_vfs_cache_pressure; | |
5088 | } | |
5089 | ||
5090 | spin_lock(&shrink_list_lock); | |
5091 | ||
5092 | /* first scan for clean buffers */ | |
5093 | list_for_each_entry_safe(dev_priv, next_dev, | |
5094 | &shrink_list, mm.shrink_list) { | |
5095 | struct drm_device *dev = dev_priv->dev; | |
5096 | ||
5097 | if (! mutex_trylock(&dev->struct_mutex)) | |
5098 | continue; | |
5099 | ||
5100 | spin_unlock(&shrink_list_lock); | |
5101 | ||
5102 | i915_gem_retire_requests(dev); | |
5103 | ||
5104 | list_for_each_entry_safe(obj_priv, next_obj, | |
5105 | &dev_priv->mm.inactive_list, | |
5106 | list) { | |
5107 | if (i915_gem_object_is_purgeable(obj_priv)) { | |
963b4836 | 5108 | i915_gem_object_unbind(obj_priv->obj); |
31169714 CW |
5109 | if (--nr_to_scan <= 0) |
5110 | break; | |
5111 | } | |
5112 | } | |
5113 | ||
5114 | spin_lock(&shrink_list_lock); | |
5115 | mutex_unlock(&dev->struct_mutex); | |
5116 | ||
963b4836 CW |
5117 | would_deadlock = 0; |
5118 | ||
31169714 CW |
5119 | if (nr_to_scan <= 0) |
5120 | break; | |
5121 | } | |
5122 | ||
5123 | /* second pass, evict/count anything still on the inactive list */ | |
5124 | list_for_each_entry_safe(dev_priv, next_dev, | |
5125 | &shrink_list, mm.shrink_list) { | |
5126 | struct drm_device *dev = dev_priv->dev; | |
5127 | ||
5128 | if (! mutex_trylock(&dev->struct_mutex)) | |
5129 | continue; | |
5130 | ||
5131 | spin_unlock(&shrink_list_lock); | |
5132 | ||
5133 | list_for_each_entry_safe(obj_priv, next_obj, | |
5134 | &dev_priv->mm.inactive_list, | |
5135 | list) { | |
5136 | if (nr_to_scan > 0) { | |
963b4836 | 5137 | i915_gem_object_unbind(obj_priv->obj); |
31169714 CW |
5138 | nr_to_scan--; |
5139 | } else | |
5140 | cnt++; | |
5141 | } | |
5142 | ||
5143 | spin_lock(&shrink_list_lock); | |
5144 | mutex_unlock(&dev->struct_mutex); | |
5145 | ||
5146 | would_deadlock = 0; | |
5147 | } | |
5148 | ||
5149 | spin_unlock(&shrink_list_lock); | |
5150 | ||
5151 | if (would_deadlock) | |
5152 | return -1; | |
5153 | else if (cnt > 0) | |
5154 | return (cnt / 100) * sysctl_vfs_cache_pressure; | |
5155 | else | |
5156 | return 0; | |
5157 | } | |
5158 | ||
5159 | static struct shrinker shrinker = { | |
5160 | .shrink = i915_gem_shrink, | |
5161 | .seeks = DEFAULT_SEEKS, | |
5162 | }; | |
5163 | ||
5164 | __init void | |
5165 | i915_gem_shrinker_init(void) | |
5166 | { | |
5167 | register_shrinker(&shrinker); | |
5168 | } | |
5169 | ||
5170 | __exit void | |
5171 | i915_gem_shrinker_exit(void) | |
5172 | { | |
5173 | unregister_shrinker(&shrinker); | |
5174 | } |