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Commit | Line | Data |
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673a394b EA |
1 | /* |
2 | * Copyright © 2008 Intel Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * Eric Anholt <eric@anholt.net> | |
25 | * | |
26 | */ | |
27 | ||
28 | #include "drmP.h" | |
29 | #include "drm.h" | |
30 | #include "i915_drm.h" | |
31 | #include "i915_drv.h" | |
1c5d22f7 | 32 | #include "i915_trace.h" |
652c393a | 33 | #include "intel_drv.h" |
5a0e3ad6 | 34 | #include <linux/slab.h> |
673a394b | 35 | #include <linux/swap.h> |
79e53945 | 36 | #include <linux/pci.h> |
f8f235e5 | 37 | #include <linux/intel-gtt.h> |
673a394b | 38 | |
0108a3ed | 39 | static uint32_t i915_gem_get_gtt_alignment(struct drm_gem_object *obj); |
2dafb1e0 | 40 | static int i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj); |
e47c68e9 EA |
41 | static void i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj); |
42 | static void i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj); | |
e47c68e9 EA |
43 | static int i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, |
44 | int write); | |
45 | static int i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj, | |
46 | uint64_t offset, | |
47 | uint64_t size); | |
48 | static void i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj); | |
673a394b | 49 | static int i915_gem_object_wait_rendering(struct drm_gem_object *obj); |
de151cf6 JB |
50 | static int i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, |
51 | unsigned alignment); | |
de151cf6 | 52 | static void i915_gem_clear_fence_reg(struct drm_gem_object *obj); |
71acb5eb DA |
53 | static int i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj, |
54 | struct drm_i915_gem_pwrite *args, | |
55 | struct drm_file *file_priv); | |
be72615b | 56 | static void i915_gem_free_object_tail(struct drm_gem_object *obj); |
673a394b | 57 | |
31169714 CW |
58 | static LIST_HEAD(shrink_list); |
59 | static DEFINE_SPINLOCK(shrink_list_lock); | |
60 | ||
7d1c4804 CW |
61 | static inline bool |
62 | i915_gem_object_is_inactive(struct drm_i915_gem_object *obj_priv) | |
63 | { | |
64 | return obj_priv->gtt_space && | |
65 | !obj_priv->active && | |
66 | obj_priv->pin_count == 0; | |
67 | } | |
68 | ||
79e53945 JB |
69 | int i915_gem_do_init(struct drm_device *dev, unsigned long start, |
70 | unsigned long end) | |
673a394b EA |
71 | { |
72 | drm_i915_private_t *dev_priv = dev->dev_private; | |
673a394b | 73 | |
79e53945 JB |
74 | if (start >= end || |
75 | (start & (PAGE_SIZE - 1)) != 0 || | |
76 | (end & (PAGE_SIZE - 1)) != 0) { | |
673a394b EA |
77 | return -EINVAL; |
78 | } | |
79 | ||
79e53945 JB |
80 | drm_mm_init(&dev_priv->mm.gtt_space, start, |
81 | end - start); | |
673a394b | 82 | |
79e53945 JB |
83 | dev->gtt_total = (uint32_t) (end - start); |
84 | ||
85 | return 0; | |
86 | } | |
673a394b | 87 | |
79e53945 JB |
88 | int |
89 | i915_gem_init_ioctl(struct drm_device *dev, void *data, | |
90 | struct drm_file *file_priv) | |
91 | { | |
92 | struct drm_i915_gem_init *args = data; | |
93 | int ret; | |
94 | ||
95 | mutex_lock(&dev->struct_mutex); | |
96 | ret = i915_gem_do_init(dev, args->gtt_start, args->gtt_end); | |
673a394b EA |
97 | mutex_unlock(&dev->struct_mutex); |
98 | ||
79e53945 | 99 | return ret; |
673a394b EA |
100 | } |
101 | ||
5a125c3c EA |
102 | int |
103 | i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data, | |
104 | struct drm_file *file_priv) | |
105 | { | |
5a125c3c | 106 | struct drm_i915_gem_get_aperture *args = data; |
5a125c3c EA |
107 | |
108 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
109 | return -ENODEV; | |
110 | ||
111 | args->aper_size = dev->gtt_total; | |
2678d9d6 KP |
112 | args->aper_available_size = (args->aper_size - |
113 | atomic_read(&dev->pin_memory)); | |
5a125c3c EA |
114 | |
115 | return 0; | |
116 | } | |
117 | ||
673a394b EA |
118 | |
119 | /** | |
120 | * Creates a new mm object and returns a handle to it. | |
121 | */ | |
122 | int | |
123 | i915_gem_create_ioctl(struct drm_device *dev, void *data, | |
124 | struct drm_file *file_priv) | |
125 | { | |
126 | struct drm_i915_gem_create *args = data; | |
127 | struct drm_gem_object *obj; | |
a1a2d1d3 PP |
128 | int ret; |
129 | u32 handle; | |
673a394b EA |
130 | |
131 | args->size = roundup(args->size, PAGE_SIZE); | |
132 | ||
133 | /* Allocate the new object */ | |
ac52bc56 | 134 | obj = i915_gem_alloc_object(dev, args->size); |
673a394b EA |
135 | if (obj == NULL) |
136 | return -ENOMEM; | |
137 | ||
138 | ret = drm_gem_handle_create(file_priv, obj, &handle); | |
1dfd9754 CW |
139 | if (ret) { |
140 | drm_gem_object_unreference_unlocked(obj); | |
673a394b | 141 | return ret; |
1dfd9754 | 142 | } |
673a394b | 143 | |
1dfd9754 CW |
144 | /* Sink the floating reference from kref_init(handlecount) */ |
145 | drm_gem_object_handle_unreference_unlocked(obj); | |
673a394b | 146 | |
1dfd9754 | 147 | args->handle = handle; |
673a394b EA |
148 | return 0; |
149 | } | |
150 | ||
eb01459f EA |
151 | static inline int |
152 | fast_shmem_read(struct page **pages, | |
153 | loff_t page_base, int page_offset, | |
154 | char __user *data, | |
155 | int length) | |
156 | { | |
157 | char __iomem *vaddr; | |
2bc43b5c | 158 | int unwritten; |
eb01459f EA |
159 | |
160 | vaddr = kmap_atomic(pages[page_base >> PAGE_SHIFT], KM_USER0); | |
161 | if (vaddr == NULL) | |
162 | return -ENOMEM; | |
2bc43b5c | 163 | unwritten = __copy_to_user_inatomic(data, vaddr + page_offset, length); |
eb01459f EA |
164 | kunmap_atomic(vaddr, KM_USER0); |
165 | ||
2bc43b5c FM |
166 | if (unwritten) |
167 | return -EFAULT; | |
168 | ||
169 | return 0; | |
eb01459f EA |
170 | } |
171 | ||
280b713b EA |
172 | static int i915_gem_object_needs_bit17_swizzle(struct drm_gem_object *obj) |
173 | { | |
174 | drm_i915_private_t *dev_priv = obj->dev->dev_private; | |
23010e43 | 175 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
280b713b EA |
176 | |
177 | return dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_9_10_17 && | |
178 | obj_priv->tiling_mode != I915_TILING_NONE; | |
179 | } | |
180 | ||
99a03df5 | 181 | static inline void |
40123c1f EA |
182 | slow_shmem_copy(struct page *dst_page, |
183 | int dst_offset, | |
184 | struct page *src_page, | |
185 | int src_offset, | |
186 | int length) | |
187 | { | |
188 | char *dst_vaddr, *src_vaddr; | |
189 | ||
99a03df5 CW |
190 | dst_vaddr = kmap(dst_page); |
191 | src_vaddr = kmap(src_page); | |
40123c1f EA |
192 | |
193 | memcpy(dst_vaddr + dst_offset, src_vaddr + src_offset, length); | |
194 | ||
99a03df5 CW |
195 | kunmap(src_page); |
196 | kunmap(dst_page); | |
40123c1f EA |
197 | } |
198 | ||
99a03df5 | 199 | static inline void |
280b713b EA |
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 | ||
99a03df5 CW |
219 | gpu_vaddr = kmap(gpu_page); |
220 | cpu_vaddr = kmap(cpu_page); | |
280b713b EA |
221 | |
222 | /* Copy the data, XORing A6 with A17 (1). The user already knows he's | |
223 | * XORing with the other bits (A9 for Y, A9 and A10 for X) | |
224 | */ | |
225 | while (length > 0) { | |
226 | int cacheline_end = ALIGN(gpu_offset + 1, 64); | |
227 | int this_length = min(cacheline_end - gpu_offset, length); | |
228 | int swizzled_gpu_offset = gpu_offset ^ 64; | |
229 | ||
230 | if (is_read) { | |
231 | memcpy(cpu_vaddr + cpu_offset, | |
232 | gpu_vaddr + swizzled_gpu_offset, | |
233 | this_length); | |
234 | } else { | |
235 | memcpy(gpu_vaddr + swizzled_gpu_offset, | |
236 | cpu_vaddr + cpu_offset, | |
237 | this_length); | |
238 | } | |
239 | cpu_offset += this_length; | |
240 | gpu_offset += this_length; | |
241 | length -= this_length; | |
242 | } | |
243 | ||
99a03df5 CW |
244 | kunmap(cpu_page); |
245 | kunmap(gpu_page); | |
280b713b EA |
246 | } |
247 | ||
eb01459f EA |
248 | /** |
249 | * This is the fast shmem pread path, which attempts to copy_from_user directly | |
250 | * from the backing pages of the object to the user's address space. On a | |
251 | * fault, it fails so we can fall back to i915_gem_shmem_pwrite_slow(). | |
252 | */ | |
253 | static int | |
254 | i915_gem_shmem_pread_fast(struct drm_device *dev, struct drm_gem_object *obj, | |
255 | struct drm_i915_gem_pread *args, | |
256 | struct drm_file *file_priv) | |
257 | { | |
23010e43 | 258 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
eb01459f EA |
259 | ssize_t remain; |
260 | loff_t offset, page_base; | |
261 | char __user *user_data; | |
262 | int page_offset, page_length; | |
263 | int ret; | |
264 | ||
265 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
266 | remain = args->size; | |
267 | ||
268 | mutex_lock(&dev->struct_mutex); | |
269 | ||
4bdadb97 | 270 | ret = i915_gem_object_get_pages(obj, 0); |
eb01459f EA |
271 | if (ret != 0) |
272 | goto fail_unlock; | |
273 | ||
274 | ret = i915_gem_object_set_cpu_read_domain_range(obj, args->offset, | |
275 | args->size); | |
276 | if (ret != 0) | |
277 | goto fail_put_pages; | |
278 | ||
23010e43 | 279 | obj_priv = to_intel_bo(obj); |
eb01459f EA |
280 | offset = args->offset; |
281 | ||
282 | while (remain > 0) { | |
283 | /* Operation in this page | |
284 | * | |
285 | * page_base = page offset within aperture | |
286 | * page_offset = offset within page | |
287 | * page_length = bytes to copy for this page | |
288 | */ | |
289 | page_base = (offset & ~(PAGE_SIZE-1)); | |
290 | page_offset = offset & (PAGE_SIZE-1); | |
291 | page_length = remain; | |
292 | if ((page_offset + remain) > PAGE_SIZE) | |
293 | page_length = PAGE_SIZE - page_offset; | |
294 | ||
295 | ret = fast_shmem_read(obj_priv->pages, | |
296 | page_base, page_offset, | |
297 | user_data, page_length); | |
298 | if (ret) | |
299 | goto fail_put_pages; | |
300 | ||
301 | remain -= page_length; | |
302 | user_data += page_length; | |
303 | offset += page_length; | |
304 | } | |
305 | ||
306 | fail_put_pages: | |
307 | i915_gem_object_put_pages(obj); | |
308 | fail_unlock: | |
309 | mutex_unlock(&dev->struct_mutex); | |
310 | ||
311 | return ret; | |
312 | } | |
313 | ||
07f73f69 CW |
314 | static int |
315 | i915_gem_object_get_pages_or_evict(struct drm_gem_object *obj) | |
316 | { | |
317 | int ret; | |
318 | ||
4bdadb97 | 319 | ret = i915_gem_object_get_pages(obj, __GFP_NORETRY | __GFP_NOWARN); |
07f73f69 CW |
320 | |
321 | /* If we've insufficient memory to map in the pages, attempt | |
322 | * to make some space by throwing out some old buffers. | |
323 | */ | |
324 | if (ret == -ENOMEM) { | |
325 | struct drm_device *dev = obj->dev; | |
07f73f69 | 326 | |
0108a3ed DV |
327 | ret = i915_gem_evict_something(dev, obj->size, |
328 | i915_gem_get_gtt_alignment(obj)); | |
07f73f69 CW |
329 | if (ret) |
330 | return ret; | |
331 | ||
4bdadb97 | 332 | ret = i915_gem_object_get_pages(obj, 0); |
07f73f69 CW |
333 | } |
334 | ||
335 | return ret; | |
336 | } | |
337 | ||
eb01459f EA |
338 | /** |
339 | * This is the fallback shmem pread path, which allocates temporary storage | |
340 | * in kernel space to copy_to_user into outside of the struct_mutex, so we | |
341 | * can copy out of the object's backing pages while holding the struct mutex | |
342 | * and not take page faults. | |
343 | */ | |
344 | static int | |
345 | i915_gem_shmem_pread_slow(struct drm_device *dev, struct drm_gem_object *obj, | |
346 | struct drm_i915_gem_pread *args, | |
347 | struct drm_file *file_priv) | |
348 | { | |
23010e43 | 349 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
eb01459f EA |
350 | struct mm_struct *mm = current->mm; |
351 | struct page **user_pages; | |
352 | ssize_t remain; | |
353 | loff_t offset, pinned_pages, i; | |
354 | loff_t first_data_page, last_data_page, num_pages; | |
355 | int shmem_page_index, shmem_page_offset; | |
356 | int data_page_index, data_page_offset; | |
357 | int page_length; | |
358 | int ret; | |
359 | uint64_t data_ptr = args->data_ptr; | |
280b713b | 360 | int do_bit17_swizzling; |
eb01459f EA |
361 | |
362 | remain = args->size; | |
363 | ||
364 | /* Pin the user pages containing the data. We can't fault while | |
365 | * holding the struct mutex, yet we want to hold it while | |
366 | * dereferencing the user data. | |
367 | */ | |
368 | first_data_page = data_ptr / PAGE_SIZE; | |
369 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; | |
370 | num_pages = last_data_page - first_data_page + 1; | |
371 | ||
8e7d2b2c | 372 | user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); |
eb01459f EA |
373 | if (user_pages == NULL) |
374 | return -ENOMEM; | |
375 | ||
376 | down_read(&mm->mmap_sem); | |
377 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, | |
e5e9ecde | 378 | num_pages, 1, 0, user_pages, NULL); |
eb01459f EA |
379 | up_read(&mm->mmap_sem); |
380 | if (pinned_pages < num_pages) { | |
381 | ret = -EFAULT; | |
382 | goto fail_put_user_pages; | |
383 | } | |
384 | ||
280b713b EA |
385 | do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
386 | ||
eb01459f EA |
387 | mutex_lock(&dev->struct_mutex); |
388 | ||
07f73f69 CW |
389 | ret = i915_gem_object_get_pages_or_evict(obj); |
390 | if (ret) | |
eb01459f EA |
391 | goto fail_unlock; |
392 | ||
393 | ret = i915_gem_object_set_cpu_read_domain_range(obj, args->offset, | |
394 | args->size); | |
395 | if (ret != 0) | |
396 | goto fail_put_pages; | |
397 | ||
23010e43 | 398 | obj_priv = to_intel_bo(obj); |
eb01459f EA |
399 | offset = args->offset; |
400 | ||
401 | while (remain > 0) { | |
402 | /* Operation in this page | |
403 | * | |
404 | * shmem_page_index = page number within shmem file | |
405 | * shmem_page_offset = offset within page in shmem file | |
406 | * data_page_index = page number in get_user_pages return | |
407 | * data_page_offset = offset with data_page_index page. | |
408 | * page_length = bytes to copy for this page | |
409 | */ | |
410 | shmem_page_index = offset / PAGE_SIZE; | |
411 | shmem_page_offset = offset & ~PAGE_MASK; | |
412 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; | |
413 | data_page_offset = data_ptr & ~PAGE_MASK; | |
414 | ||
415 | page_length = remain; | |
416 | if ((shmem_page_offset + page_length) > PAGE_SIZE) | |
417 | page_length = PAGE_SIZE - shmem_page_offset; | |
418 | if ((data_page_offset + page_length) > PAGE_SIZE) | |
419 | page_length = PAGE_SIZE - data_page_offset; | |
420 | ||
280b713b | 421 | if (do_bit17_swizzling) { |
99a03df5 | 422 | slow_shmem_bit17_copy(obj_priv->pages[shmem_page_index], |
280b713b | 423 | shmem_page_offset, |
99a03df5 CW |
424 | user_pages[data_page_index], |
425 | data_page_offset, | |
426 | page_length, | |
427 | 1); | |
428 | } else { | |
429 | slow_shmem_copy(user_pages[data_page_index], | |
430 | data_page_offset, | |
431 | obj_priv->pages[shmem_page_index], | |
432 | shmem_page_offset, | |
433 | page_length); | |
280b713b | 434 | } |
eb01459f EA |
435 | |
436 | remain -= page_length; | |
437 | data_ptr += page_length; | |
438 | offset += page_length; | |
439 | } | |
440 | ||
441 | fail_put_pages: | |
442 | i915_gem_object_put_pages(obj); | |
443 | fail_unlock: | |
444 | mutex_unlock(&dev->struct_mutex); | |
445 | fail_put_user_pages: | |
446 | for (i = 0; i < pinned_pages; i++) { | |
447 | SetPageDirty(user_pages[i]); | |
448 | page_cache_release(user_pages[i]); | |
449 | } | |
8e7d2b2c | 450 | drm_free_large(user_pages); |
eb01459f EA |
451 | |
452 | return ret; | |
453 | } | |
454 | ||
673a394b EA |
455 | /** |
456 | * Reads data from the object referenced by handle. | |
457 | * | |
458 | * On error, the contents of *data are undefined. | |
459 | */ | |
460 | int | |
461 | i915_gem_pread_ioctl(struct drm_device *dev, void *data, | |
462 | struct drm_file *file_priv) | |
463 | { | |
464 | struct drm_i915_gem_pread *args = data; | |
465 | struct drm_gem_object *obj; | |
466 | struct drm_i915_gem_object *obj_priv; | |
673a394b EA |
467 | int ret; |
468 | ||
469 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
470 | if (obj == NULL) | |
bf79cb91 | 471 | return -ENOENT; |
23010e43 | 472 | obj_priv = to_intel_bo(obj); |
673a394b EA |
473 | |
474 | /* Bounds check source. | |
475 | * | |
476 | * XXX: This could use review for overflow issues... | |
477 | */ | |
478 | if (args->offset > obj->size || args->size > obj->size || | |
479 | args->offset + args->size > obj->size) { | |
bc9025bd | 480 | drm_gem_object_unreference_unlocked(obj); |
673a394b EA |
481 | return -EINVAL; |
482 | } | |
483 | ||
280b713b | 484 | if (i915_gem_object_needs_bit17_swizzle(obj)) { |
eb01459f | 485 | ret = i915_gem_shmem_pread_slow(dev, obj, args, file_priv); |
280b713b EA |
486 | } else { |
487 | ret = i915_gem_shmem_pread_fast(dev, obj, args, file_priv); | |
488 | if (ret != 0) | |
489 | ret = i915_gem_shmem_pread_slow(dev, obj, args, | |
490 | file_priv); | |
491 | } | |
673a394b | 492 | |
bc9025bd | 493 | drm_gem_object_unreference_unlocked(obj); |
673a394b | 494 | |
eb01459f | 495 | return ret; |
673a394b EA |
496 | } |
497 | ||
0839ccb8 KP |
498 | /* This is the fast write path which cannot handle |
499 | * page faults in the source data | |
9b7530cc | 500 | */ |
0839ccb8 KP |
501 | |
502 | static inline int | |
503 | fast_user_write(struct io_mapping *mapping, | |
504 | loff_t page_base, int page_offset, | |
505 | char __user *user_data, | |
506 | int length) | |
9b7530cc | 507 | { |
9b7530cc | 508 | char *vaddr_atomic; |
0839ccb8 | 509 | unsigned long unwritten; |
9b7530cc | 510 | |
fca3ec01 | 511 | vaddr_atomic = io_mapping_map_atomic_wc(mapping, page_base, KM_USER0); |
0839ccb8 KP |
512 | unwritten = __copy_from_user_inatomic_nocache(vaddr_atomic + page_offset, |
513 | user_data, length); | |
fca3ec01 | 514 | io_mapping_unmap_atomic(vaddr_atomic, KM_USER0); |
0839ccb8 KP |
515 | if (unwritten) |
516 | return -EFAULT; | |
517 | return 0; | |
518 | } | |
519 | ||
520 | /* Here's the write path which can sleep for | |
521 | * page faults | |
522 | */ | |
523 | ||
ab34c226 | 524 | static inline void |
3de09aa3 EA |
525 | slow_kernel_write(struct io_mapping *mapping, |
526 | loff_t gtt_base, int gtt_offset, | |
527 | struct page *user_page, int user_offset, | |
528 | int length) | |
0839ccb8 | 529 | { |
ab34c226 CW |
530 | char __iomem *dst_vaddr; |
531 | char *src_vaddr; | |
0839ccb8 | 532 | |
ab34c226 CW |
533 | dst_vaddr = io_mapping_map_wc(mapping, gtt_base); |
534 | src_vaddr = kmap(user_page); | |
535 | ||
536 | memcpy_toio(dst_vaddr + gtt_offset, | |
537 | src_vaddr + user_offset, | |
538 | length); | |
539 | ||
540 | kunmap(user_page); | |
541 | io_mapping_unmap(dst_vaddr); | |
9b7530cc LT |
542 | } |
543 | ||
40123c1f EA |
544 | static inline int |
545 | fast_shmem_write(struct page **pages, | |
546 | loff_t page_base, int page_offset, | |
547 | char __user *data, | |
548 | int length) | |
549 | { | |
550 | char __iomem *vaddr; | |
d0088775 | 551 | unsigned long unwritten; |
40123c1f EA |
552 | |
553 | vaddr = kmap_atomic(pages[page_base >> PAGE_SHIFT], KM_USER0); | |
554 | if (vaddr == NULL) | |
555 | return -ENOMEM; | |
d0088775 | 556 | unwritten = __copy_from_user_inatomic(vaddr + page_offset, data, length); |
40123c1f EA |
557 | kunmap_atomic(vaddr, KM_USER0); |
558 | ||
d0088775 DA |
559 | if (unwritten) |
560 | return -EFAULT; | |
40123c1f EA |
561 | return 0; |
562 | } | |
563 | ||
3de09aa3 EA |
564 | /** |
565 | * This is the fast pwrite path, where we copy the data directly from the | |
566 | * user into the GTT, uncached. | |
567 | */ | |
673a394b | 568 | static int |
3de09aa3 EA |
569 | i915_gem_gtt_pwrite_fast(struct drm_device *dev, struct drm_gem_object *obj, |
570 | struct drm_i915_gem_pwrite *args, | |
571 | struct drm_file *file_priv) | |
673a394b | 572 | { |
23010e43 | 573 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
0839ccb8 | 574 | drm_i915_private_t *dev_priv = dev->dev_private; |
673a394b | 575 | ssize_t remain; |
0839ccb8 | 576 | loff_t offset, page_base; |
673a394b | 577 | char __user *user_data; |
0839ccb8 KP |
578 | int page_offset, page_length; |
579 | int ret; | |
673a394b EA |
580 | |
581 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
582 | remain = args->size; | |
583 | if (!access_ok(VERIFY_READ, user_data, remain)) | |
584 | return -EFAULT; | |
585 | ||
586 | ||
587 | mutex_lock(&dev->struct_mutex); | |
588 | ret = i915_gem_object_pin(obj, 0); | |
589 | if (ret) { | |
590 | mutex_unlock(&dev->struct_mutex); | |
591 | return ret; | |
592 | } | |
2ef7eeaa | 593 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); |
673a394b EA |
594 | if (ret) |
595 | goto fail; | |
596 | ||
23010e43 | 597 | obj_priv = to_intel_bo(obj); |
673a394b | 598 | offset = obj_priv->gtt_offset + args->offset; |
673a394b EA |
599 | |
600 | while (remain > 0) { | |
601 | /* Operation in this page | |
602 | * | |
0839ccb8 KP |
603 | * page_base = page offset within aperture |
604 | * page_offset = offset within page | |
605 | * page_length = bytes to copy for this page | |
673a394b | 606 | */ |
0839ccb8 KP |
607 | page_base = (offset & ~(PAGE_SIZE-1)); |
608 | page_offset = offset & (PAGE_SIZE-1); | |
609 | page_length = remain; | |
610 | if ((page_offset + remain) > PAGE_SIZE) | |
611 | page_length = PAGE_SIZE - page_offset; | |
612 | ||
613 | ret = fast_user_write (dev_priv->mm.gtt_mapping, page_base, | |
614 | page_offset, user_data, page_length); | |
615 | ||
616 | /* If we get a fault while copying data, then (presumably) our | |
3de09aa3 EA |
617 | * source page isn't available. Return the error and we'll |
618 | * retry in the slow path. | |
0839ccb8 | 619 | */ |
3de09aa3 EA |
620 | if (ret) |
621 | goto fail; | |
673a394b | 622 | |
0839ccb8 KP |
623 | remain -= page_length; |
624 | user_data += page_length; | |
625 | offset += page_length; | |
673a394b | 626 | } |
673a394b EA |
627 | |
628 | fail: | |
629 | i915_gem_object_unpin(obj); | |
630 | mutex_unlock(&dev->struct_mutex); | |
631 | ||
632 | return ret; | |
633 | } | |
634 | ||
3de09aa3 EA |
635 | /** |
636 | * This is the fallback GTT pwrite path, which uses get_user_pages to pin | |
637 | * the memory and maps it using kmap_atomic for copying. | |
638 | * | |
639 | * This code resulted in x11perf -rgb10text consuming about 10% more CPU | |
640 | * than using i915_gem_gtt_pwrite_fast on a G45 (32-bit). | |
641 | */ | |
3043c60c | 642 | static int |
3de09aa3 EA |
643 | i915_gem_gtt_pwrite_slow(struct drm_device *dev, struct drm_gem_object *obj, |
644 | struct drm_i915_gem_pwrite *args, | |
645 | struct drm_file *file_priv) | |
673a394b | 646 | { |
23010e43 | 647 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
3de09aa3 EA |
648 | drm_i915_private_t *dev_priv = dev->dev_private; |
649 | ssize_t remain; | |
650 | loff_t gtt_page_base, offset; | |
651 | loff_t first_data_page, last_data_page, num_pages; | |
652 | loff_t pinned_pages, i; | |
653 | struct page **user_pages; | |
654 | struct mm_struct *mm = current->mm; | |
655 | int gtt_page_offset, data_page_offset, data_page_index, page_length; | |
673a394b | 656 | int ret; |
3de09aa3 EA |
657 | uint64_t data_ptr = args->data_ptr; |
658 | ||
659 | remain = args->size; | |
660 | ||
661 | /* Pin the user pages containing the data. We can't fault while | |
662 | * holding the struct mutex, and all of the pwrite implementations | |
663 | * want to hold it while dereferencing the user data. | |
664 | */ | |
665 | first_data_page = data_ptr / PAGE_SIZE; | |
666 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; | |
667 | num_pages = last_data_page - first_data_page + 1; | |
668 | ||
8e7d2b2c | 669 | user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); |
3de09aa3 EA |
670 | if (user_pages == NULL) |
671 | return -ENOMEM; | |
672 | ||
673 | down_read(&mm->mmap_sem); | |
674 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, | |
675 | num_pages, 0, 0, user_pages, NULL); | |
676 | up_read(&mm->mmap_sem); | |
677 | if (pinned_pages < num_pages) { | |
678 | ret = -EFAULT; | |
679 | goto out_unpin_pages; | |
680 | } | |
673a394b EA |
681 | |
682 | mutex_lock(&dev->struct_mutex); | |
3de09aa3 EA |
683 | ret = i915_gem_object_pin(obj, 0); |
684 | if (ret) | |
685 | goto out_unlock; | |
686 | ||
687 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); | |
688 | if (ret) | |
689 | goto out_unpin_object; | |
690 | ||
23010e43 | 691 | obj_priv = to_intel_bo(obj); |
3de09aa3 EA |
692 | offset = obj_priv->gtt_offset + args->offset; |
693 | ||
694 | while (remain > 0) { | |
695 | /* Operation in this page | |
696 | * | |
697 | * gtt_page_base = page offset within aperture | |
698 | * gtt_page_offset = offset within page in aperture | |
699 | * data_page_index = page number in get_user_pages return | |
700 | * data_page_offset = offset with data_page_index page. | |
701 | * page_length = bytes to copy for this page | |
702 | */ | |
703 | gtt_page_base = offset & PAGE_MASK; | |
704 | gtt_page_offset = offset & ~PAGE_MASK; | |
705 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; | |
706 | data_page_offset = data_ptr & ~PAGE_MASK; | |
707 | ||
708 | page_length = remain; | |
709 | if ((gtt_page_offset + page_length) > PAGE_SIZE) | |
710 | page_length = PAGE_SIZE - gtt_page_offset; | |
711 | if ((data_page_offset + page_length) > PAGE_SIZE) | |
712 | page_length = PAGE_SIZE - data_page_offset; | |
713 | ||
ab34c226 CW |
714 | slow_kernel_write(dev_priv->mm.gtt_mapping, |
715 | gtt_page_base, gtt_page_offset, | |
716 | user_pages[data_page_index], | |
717 | data_page_offset, | |
718 | page_length); | |
3de09aa3 EA |
719 | |
720 | remain -= page_length; | |
721 | offset += page_length; | |
722 | data_ptr += page_length; | |
723 | } | |
724 | ||
725 | out_unpin_object: | |
726 | i915_gem_object_unpin(obj); | |
727 | out_unlock: | |
728 | mutex_unlock(&dev->struct_mutex); | |
729 | out_unpin_pages: | |
730 | for (i = 0; i < pinned_pages; i++) | |
731 | page_cache_release(user_pages[i]); | |
8e7d2b2c | 732 | drm_free_large(user_pages); |
3de09aa3 EA |
733 | |
734 | return ret; | |
735 | } | |
736 | ||
40123c1f EA |
737 | /** |
738 | * This is the fast shmem pwrite path, which attempts to directly | |
739 | * copy_from_user into the kmapped pages backing the object. | |
740 | */ | |
3043c60c | 741 | static int |
40123c1f EA |
742 | i915_gem_shmem_pwrite_fast(struct drm_device *dev, struct drm_gem_object *obj, |
743 | struct drm_i915_gem_pwrite *args, | |
744 | struct drm_file *file_priv) | |
673a394b | 745 | { |
23010e43 | 746 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
40123c1f EA |
747 | ssize_t remain; |
748 | loff_t offset, page_base; | |
749 | char __user *user_data; | |
750 | int page_offset, page_length; | |
673a394b | 751 | int ret; |
40123c1f EA |
752 | |
753 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
754 | remain = args->size; | |
673a394b EA |
755 | |
756 | mutex_lock(&dev->struct_mutex); | |
757 | ||
4bdadb97 | 758 | ret = i915_gem_object_get_pages(obj, 0); |
40123c1f EA |
759 | if (ret != 0) |
760 | goto fail_unlock; | |
673a394b | 761 | |
e47c68e9 | 762 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
40123c1f EA |
763 | if (ret != 0) |
764 | goto fail_put_pages; | |
765 | ||
23010e43 | 766 | obj_priv = to_intel_bo(obj); |
40123c1f EA |
767 | offset = args->offset; |
768 | obj_priv->dirty = 1; | |
769 | ||
770 | while (remain > 0) { | |
771 | /* Operation in this page | |
772 | * | |
773 | * page_base = page offset within aperture | |
774 | * page_offset = offset within page | |
775 | * page_length = bytes to copy for this page | |
776 | */ | |
777 | page_base = (offset & ~(PAGE_SIZE-1)); | |
778 | page_offset = offset & (PAGE_SIZE-1); | |
779 | page_length = remain; | |
780 | if ((page_offset + remain) > PAGE_SIZE) | |
781 | page_length = PAGE_SIZE - page_offset; | |
782 | ||
783 | ret = fast_shmem_write(obj_priv->pages, | |
784 | page_base, page_offset, | |
785 | user_data, page_length); | |
786 | if (ret) | |
787 | goto fail_put_pages; | |
788 | ||
789 | remain -= page_length; | |
790 | user_data += page_length; | |
791 | offset += page_length; | |
792 | } | |
793 | ||
794 | fail_put_pages: | |
795 | i915_gem_object_put_pages(obj); | |
796 | fail_unlock: | |
797 | mutex_unlock(&dev->struct_mutex); | |
798 | ||
799 | return ret; | |
800 | } | |
801 | ||
802 | /** | |
803 | * This is the fallback shmem pwrite path, which uses get_user_pages to pin | |
804 | * the memory and maps it using kmap_atomic for copying. | |
805 | * | |
806 | * This avoids taking mmap_sem for faulting on the user's address while the | |
807 | * struct_mutex is held. | |
808 | */ | |
809 | static int | |
810 | i915_gem_shmem_pwrite_slow(struct drm_device *dev, struct drm_gem_object *obj, | |
811 | struct drm_i915_gem_pwrite *args, | |
812 | struct drm_file *file_priv) | |
813 | { | |
23010e43 | 814 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
40123c1f EA |
815 | struct mm_struct *mm = current->mm; |
816 | struct page **user_pages; | |
817 | ssize_t remain; | |
818 | loff_t offset, pinned_pages, i; | |
819 | loff_t first_data_page, last_data_page, num_pages; | |
820 | int shmem_page_index, shmem_page_offset; | |
821 | int data_page_index, data_page_offset; | |
822 | int page_length; | |
823 | int ret; | |
824 | uint64_t data_ptr = args->data_ptr; | |
280b713b | 825 | int do_bit17_swizzling; |
40123c1f EA |
826 | |
827 | remain = args->size; | |
828 | ||
829 | /* Pin the user pages containing the data. We can't fault while | |
830 | * holding the struct mutex, and all of the pwrite implementations | |
831 | * want to hold it while dereferencing the user data. | |
832 | */ | |
833 | first_data_page = data_ptr / PAGE_SIZE; | |
834 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; | |
835 | num_pages = last_data_page - first_data_page + 1; | |
836 | ||
8e7d2b2c | 837 | user_pages = drm_calloc_large(num_pages, sizeof(struct page *)); |
40123c1f EA |
838 | if (user_pages == NULL) |
839 | return -ENOMEM; | |
840 | ||
841 | down_read(&mm->mmap_sem); | |
842 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, | |
843 | num_pages, 0, 0, user_pages, NULL); | |
844 | up_read(&mm->mmap_sem); | |
845 | if (pinned_pages < num_pages) { | |
846 | ret = -EFAULT; | |
847 | goto fail_put_user_pages; | |
673a394b EA |
848 | } |
849 | ||
280b713b EA |
850 | do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
851 | ||
40123c1f EA |
852 | mutex_lock(&dev->struct_mutex); |
853 | ||
07f73f69 CW |
854 | ret = i915_gem_object_get_pages_or_evict(obj); |
855 | if (ret) | |
40123c1f EA |
856 | goto fail_unlock; |
857 | ||
858 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); | |
859 | if (ret != 0) | |
860 | goto fail_put_pages; | |
861 | ||
23010e43 | 862 | obj_priv = to_intel_bo(obj); |
673a394b | 863 | offset = args->offset; |
40123c1f | 864 | obj_priv->dirty = 1; |
673a394b | 865 | |
40123c1f EA |
866 | while (remain > 0) { |
867 | /* Operation in this page | |
868 | * | |
869 | * shmem_page_index = page number within shmem file | |
870 | * shmem_page_offset = offset within page in shmem file | |
871 | * data_page_index = page number in get_user_pages return | |
872 | * data_page_offset = offset with data_page_index page. | |
873 | * page_length = bytes to copy for this page | |
874 | */ | |
875 | shmem_page_index = offset / PAGE_SIZE; | |
876 | shmem_page_offset = offset & ~PAGE_MASK; | |
877 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; | |
878 | data_page_offset = data_ptr & ~PAGE_MASK; | |
879 | ||
880 | page_length = remain; | |
881 | if ((shmem_page_offset + page_length) > PAGE_SIZE) | |
882 | page_length = PAGE_SIZE - shmem_page_offset; | |
883 | if ((data_page_offset + page_length) > PAGE_SIZE) | |
884 | page_length = PAGE_SIZE - data_page_offset; | |
885 | ||
280b713b | 886 | if (do_bit17_swizzling) { |
99a03df5 | 887 | slow_shmem_bit17_copy(obj_priv->pages[shmem_page_index], |
280b713b EA |
888 | shmem_page_offset, |
889 | user_pages[data_page_index], | |
890 | data_page_offset, | |
99a03df5 CW |
891 | page_length, |
892 | 0); | |
893 | } else { | |
894 | slow_shmem_copy(obj_priv->pages[shmem_page_index], | |
895 | shmem_page_offset, | |
896 | user_pages[data_page_index], | |
897 | data_page_offset, | |
898 | page_length); | |
280b713b | 899 | } |
40123c1f EA |
900 | |
901 | remain -= page_length; | |
902 | data_ptr += page_length; | |
903 | offset += page_length; | |
673a394b EA |
904 | } |
905 | ||
40123c1f EA |
906 | fail_put_pages: |
907 | i915_gem_object_put_pages(obj); | |
908 | fail_unlock: | |
673a394b | 909 | mutex_unlock(&dev->struct_mutex); |
40123c1f EA |
910 | fail_put_user_pages: |
911 | for (i = 0; i < pinned_pages; i++) | |
912 | page_cache_release(user_pages[i]); | |
8e7d2b2c | 913 | drm_free_large(user_pages); |
673a394b | 914 | |
40123c1f | 915 | return ret; |
673a394b EA |
916 | } |
917 | ||
918 | /** | |
919 | * Writes data to the object referenced by handle. | |
920 | * | |
921 | * On error, the contents of the buffer that were to be modified are undefined. | |
922 | */ | |
923 | int | |
924 | i915_gem_pwrite_ioctl(struct drm_device *dev, void *data, | |
925 | struct drm_file *file_priv) | |
926 | { | |
927 | struct drm_i915_gem_pwrite *args = data; | |
928 | struct drm_gem_object *obj; | |
929 | struct drm_i915_gem_object *obj_priv; | |
930 | int ret = 0; | |
931 | ||
932 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
933 | if (obj == NULL) | |
bf79cb91 | 934 | return -ENOENT; |
23010e43 | 935 | obj_priv = to_intel_bo(obj); |
673a394b EA |
936 | |
937 | /* Bounds check destination. | |
938 | * | |
939 | * XXX: This could use review for overflow issues... | |
940 | */ | |
941 | if (args->offset > obj->size || args->size > obj->size || | |
942 | args->offset + args->size > obj->size) { | |
bc9025bd | 943 | drm_gem_object_unreference_unlocked(obj); |
673a394b EA |
944 | return -EINVAL; |
945 | } | |
946 | ||
947 | /* We can only do the GTT pwrite on untiled buffers, as otherwise | |
948 | * it would end up going through the fenced access, and we'll get | |
949 | * different detiling behavior between reading and writing. | |
950 | * pread/pwrite currently are reading and writing from the CPU | |
951 | * perspective, requiring manual detiling by the client. | |
952 | */ | |
71acb5eb DA |
953 | if (obj_priv->phys_obj) |
954 | ret = i915_gem_phys_pwrite(dev, obj, args, file_priv); | |
955 | else if (obj_priv->tiling_mode == I915_TILING_NONE && | |
9b8c4a0b CW |
956 | dev->gtt_total != 0 && |
957 | obj->write_domain != I915_GEM_DOMAIN_CPU) { | |
3de09aa3 EA |
958 | ret = i915_gem_gtt_pwrite_fast(dev, obj, args, file_priv); |
959 | if (ret == -EFAULT) { | |
960 | ret = i915_gem_gtt_pwrite_slow(dev, obj, args, | |
961 | file_priv); | |
962 | } | |
280b713b EA |
963 | } else if (i915_gem_object_needs_bit17_swizzle(obj)) { |
964 | ret = i915_gem_shmem_pwrite_slow(dev, obj, args, file_priv); | |
40123c1f EA |
965 | } else { |
966 | ret = i915_gem_shmem_pwrite_fast(dev, obj, args, file_priv); | |
967 | if (ret == -EFAULT) { | |
968 | ret = i915_gem_shmem_pwrite_slow(dev, obj, args, | |
969 | file_priv); | |
970 | } | |
971 | } | |
673a394b EA |
972 | |
973 | #if WATCH_PWRITE | |
974 | if (ret) | |
975 | DRM_INFO("pwrite failed %d\n", ret); | |
976 | #endif | |
977 | ||
bc9025bd | 978 | drm_gem_object_unreference_unlocked(obj); |
673a394b EA |
979 | |
980 | return ret; | |
981 | } | |
982 | ||
983 | /** | |
2ef7eeaa EA |
984 | * Called when user space prepares to use an object with the CPU, either |
985 | * through the mmap ioctl's mapping or a GTT mapping. | |
673a394b EA |
986 | */ |
987 | int | |
988 | i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, | |
989 | struct drm_file *file_priv) | |
990 | { | |
a09ba7fa | 991 | struct drm_i915_private *dev_priv = dev->dev_private; |
673a394b EA |
992 | struct drm_i915_gem_set_domain *args = data; |
993 | struct drm_gem_object *obj; | |
652c393a | 994 | struct drm_i915_gem_object *obj_priv; |
2ef7eeaa EA |
995 | uint32_t read_domains = args->read_domains; |
996 | uint32_t write_domain = args->write_domain; | |
673a394b EA |
997 | int ret; |
998 | ||
999 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1000 | return -ENODEV; | |
1001 | ||
2ef7eeaa | 1002 | /* Only handle setting domains to types used by the CPU. */ |
21d509e3 | 1003 | if (write_domain & I915_GEM_GPU_DOMAINS) |
2ef7eeaa EA |
1004 | return -EINVAL; |
1005 | ||
21d509e3 | 1006 | if (read_domains & I915_GEM_GPU_DOMAINS) |
2ef7eeaa EA |
1007 | return -EINVAL; |
1008 | ||
1009 | /* Having something in the write domain implies it's in the read | |
1010 | * domain, and only that read domain. Enforce that in the request. | |
1011 | */ | |
1012 | if (write_domain != 0 && read_domains != write_domain) | |
1013 | return -EINVAL; | |
1014 | ||
673a394b EA |
1015 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
1016 | if (obj == NULL) | |
bf79cb91 | 1017 | return -ENOENT; |
23010e43 | 1018 | obj_priv = to_intel_bo(obj); |
673a394b EA |
1019 | |
1020 | mutex_lock(&dev->struct_mutex); | |
652c393a JB |
1021 | |
1022 | intel_mark_busy(dev, obj); | |
1023 | ||
673a394b | 1024 | #if WATCH_BUF |
cfd43c02 | 1025 | DRM_INFO("set_domain_ioctl %p(%zd), %08x %08x\n", |
2ef7eeaa | 1026 | obj, obj->size, read_domains, write_domain); |
673a394b | 1027 | #endif |
2ef7eeaa EA |
1028 | if (read_domains & I915_GEM_DOMAIN_GTT) { |
1029 | ret = i915_gem_object_set_to_gtt_domain(obj, write_domain != 0); | |
02354392 | 1030 | |
a09ba7fa EA |
1031 | /* Update the LRU on the fence for the CPU access that's |
1032 | * about to occur. | |
1033 | */ | |
1034 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) { | |
007cc8ac DV |
1035 | struct drm_i915_fence_reg *reg = |
1036 | &dev_priv->fence_regs[obj_priv->fence_reg]; | |
1037 | list_move_tail(®->lru_list, | |
a09ba7fa EA |
1038 | &dev_priv->mm.fence_list); |
1039 | } | |
1040 | ||
02354392 EA |
1041 | /* Silently promote "you're not bound, there was nothing to do" |
1042 | * to success, since the client was just asking us to | |
1043 | * make sure everything was done. | |
1044 | */ | |
1045 | if (ret == -EINVAL) | |
1046 | ret = 0; | |
2ef7eeaa | 1047 | } else { |
e47c68e9 | 1048 | ret = i915_gem_object_set_to_cpu_domain(obj, write_domain != 0); |
2ef7eeaa EA |
1049 | } |
1050 | ||
7d1c4804 CW |
1051 | |
1052 | /* Maintain LRU order of "inactive" objects */ | |
1053 | if (ret == 0 && i915_gem_object_is_inactive(obj_priv)) | |
1054 | list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list); | |
1055 | ||
673a394b EA |
1056 | drm_gem_object_unreference(obj); |
1057 | mutex_unlock(&dev->struct_mutex); | |
1058 | return ret; | |
1059 | } | |
1060 | ||
1061 | /** | |
1062 | * Called when user space has done writes to this buffer | |
1063 | */ | |
1064 | int | |
1065 | i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data, | |
1066 | struct drm_file *file_priv) | |
1067 | { | |
1068 | struct drm_i915_gem_sw_finish *args = data; | |
1069 | struct drm_gem_object *obj; | |
1070 | struct drm_i915_gem_object *obj_priv; | |
1071 | int ret = 0; | |
1072 | ||
1073 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1074 | return -ENODEV; | |
1075 | ||
1076 | mutex_lock(&dev->struct_mutex); | |
1077 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
1078 | if (obj == NULL) { | |
1079 | mutex_unlock(&dev->struct_mutex); | |
bf79cb91 | 1080 | return -ENOENT; |
673a394b EA |
1081 | } |
1082 | ||
1083 | #if WATCH_BUF | |
cfd43c02 | 1084 | DRM_INFO("%s: sw_finish %d (%p %zd)\n", |
673a394b EA |
1085 | __func__, args->handle, obj, obj->size); |
1086 | #endif | |
23010e43 | 1087 | obj_priv = to_intel_bo(obj); |
673a394b EA |
1088 | |
1089 | /* Pinned buffers may be scanout, so flush the cache */ | |
e47c68e9 EA |
1090 | if (obj_priv->pin_count) |
1091 | i915_gem_object_flush_cpu_write_domain(obj); | |
1092 | ||
673a394b EA |
1093 | drm_gem_object_unreference(obj); |
1094 | mutex_unlock(&dev->struct_mutex); | |
1095 | return ret; | |
1096 | } | |
1097 | ||
1098 | /** | |
1099 | * Maps the contents of an object, returning the address it is mapped | |
1100 | * into. | |
1101 | * | |
1102 | * While the mapping holds a reference on the contents of the object, it doesn't | |
1103 | * imply a ref on the object itself. | |
1104 | */ | |
1105 | int | |
1106 | i915_gem_mmap_ioctl(struct drm_device *dev, void *data, | |
1107 | struct drm_file *file_priv) | |
1108 | { | |
1109 | struct drm_i915_gem_mmap *args = data; | |
1110 | struct drm_gem_object *obj; | |
1111 | loff_t offset; | |
1112 | unsigned long addr; | |
1113 | ||
1114 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1115 | return -ENODEV; | |
1116 | ||
1117 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
1118 | if (obj == NULL) | |
bf79cb91 | 1119 | return -ENOENT; |
673a394b EA |
1120 | |
1121 | offset = args->offset; | |
1122 | ||
1123 | down_write(¤t->mm->mmap_sem); | |
1124 | addr = do_mmap(obj->filp, 0, args->size, | |
1125 | PROT_READ | PROT_WRITE, MAP_SHARED, | |
1126 | args->offset); | |
1127 | up_write(¤t->mm->mmap_sem); | |
bc9025bd | 1128 | drm_gem_object_unreference_unlocked(obj); |
673a394b EA |
1129 | if (IS_ERR((void *)addr)) |
1130 | return addr; | |
1131 | ||
1132 | args->addr_ptr = (uint64_t) addr; | |
1133 | ||
1134 | return 0; | |
1135 | } | |
1136 | ||
de151cf6 JB |
1137 | /** |
1138 | * i915_gem_fault - fault a page into the GTT | |
1139 | * vma: VMA in question | |
1140 | * vmf: fault info | |
1141 | * | |
1142 | * The fault handler is set up by drm_gem_mmap() when a object is GTT mapped | |
1143 | * from userspace. The fault handler takes care of binding the object to | |
1144 | * the GTT (if needed), allocating and programming a fence register (again, | |
1145 | * only if needed based on whether the old reg is still valid or the object | |
1146 | * is tiled) and inserting a new PTE into the faulting process. | |
1147 | * | |
1148 | * Note that the faulting process may involve evicting existing objects | |
1149 | * from the GTT and/or fence registers to make room. So performance may | |
1150 | * suffer if the GTT working set is large or there are few fence registers | |
1151 | * left. | |
1152 | */ | |
1153 | int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
1154 | { | |
1155 | struct drm_gem_object *obj = vma->vm_private_data; | |
1156 | struct drm_device *dev = obj->dev; | |
7d1c4804 | 1157 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 1158 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
1159 | pgoff_t page_offset; |
1160 | unsigned long pfn; | |
1161 | int ret = 0; | |
0f973f27 | 1162 | bool write = !!(vmf->flags & FAULT_FLAG_WRITE); |
de151cf6 JB |
1163 | |
1164 | /* We don't use vmf->pgoff since that has the fake offset */ | |
1165 | page_offset = ((unsigned long)vmf->virtual_address - vma->vm_start) >> | |
1166 | PAGE_SHIFT; | |
1167 | ||
1168 | /* Now bind it into the GTT if needed */ | |
1169 | mutex_lock(&dev->struct_mutex); | |
1170 | if (!obj_priv->gtt_space) { | |
e67b8ce1 | 1171 | ret = i915_gem_object_bind_to_gtt(obj, 0); |
c715089f CW |
1172 | if (ret) |
1173 | goto unlock; | |
07f4f3e8 | 1174 | |
07f4f3e8 | 1175 | ret = i915_gem_object_set_to_gtt_domain(obj, write); |
c715089f CW |
1176 | if (ret) |
1177 | goto unlock; | |
de151cf6 JB |
1178 | } |
1179 | ||
1180 | /* Need a new fence register? */ | |
a09ba7fa | 1181 | if (obj_priv->tiling_mode != I915_TILING_NONE) { |
8c4b8c3f | 1182 | ret = i915_gem_object_get_fence_reg(obj); |
c715089f CW |
1183 | if (ret) |
1184 | goto unlock; | |
d9ddcb96 | 1185 | } |
de151cf6 | 1186 | |
7d1c4804 CW |
1187 | if (i915_gem_object_is_inactive(obj_priv)) |
1188 | list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list); | |
1189 | ||
de151cf6 JB |
1190 | pfn = ((dev->agp->base + obj_priv->gtt_offset) >> PAGE_SHIFT) + |
1191 | page_offset; | |
1192 | ||
1193 | /* Finally, remap it using the new GTT offset */ | |
1194 | ret = vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, pfn); | |
c715089f | 1195 | unlock: |
de151cf6 JB |
1196 | mutex_unlock(&dev->struct_mutex); |
1197 | ||
1198 | switch (ret) { | |
c715089f CW |
1199 | case 0: |
1200 | case -ERESTARTSYS: | |
1201 | return VM_FAULT_NOPAGE; | |
de151cf6 JB |
1202 | case -ENOMEM: |
1203 | case -EAGAIN: | |
1204 | return VM_FAULT_OOM; | |
de151cf6 | 1205 | default: |
c715089f | 1206 | return VM_FAULT_SIGBUS; |
de151cf6 JB |
1207 | } |
1208 | } | |
1209 | ||
1210 | /** | |
1211 | * i915_gem_create_mmap_offset - create a fake mmap offset for an object | |
1212 | * @obj: obj in question | |
1213 | * | |
1214 | * GEM memory mapping works by handing back to userspace a fake mmap offset | |
1215 | * it can use in a subsequent mmap(2) call. The DRM core code then looks | |
1216 | * up the object based on the offset and sets up the various memory mapping | |
1217 | * structures. | |
1218 | * | |
1219 | * This routine allocates and attaches a fake offset for @obj. | |
1220 | */ | |
1221 | static int | |
1222 | i915_gem_create_mmap_offset(struct drm_gem_object *obj) | |
1223 | { | |
1224 | struct drm_device *dev = obj->dev; | |
1225 | struct drm_gem_mm *mm = dev->mm_private; | |
23010e43 | 1226 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 | 1227 | struct drm_map_list *list; |
f77d390c | 1228 | struct drm_local_map *map; |
de151cf6 JB |
1229 | int ret = 0; |
1230 | ||
1231 | /* Set the object up for mmap'ing */ | |
1232 | list = &obj->map_list; | |
9a298b2a | 1233 | list->map = kzalloc(sizeof(struct drm_map_list), GFP_KERNEL); |
de151cf6 JB |
1234 | if (!list->map) |
1235 | return -ENOMEM; | |
1236 | ||
1237 | map = list->map; | |
1238 | map->type = _DRM_GEM; | |
1239 | map->size = obj->size; | |
1240 | map->handle = obj; | |
1241 | ||
1242 | /* Get a DRM GEM mmap offset allocated... */ | |
1243 | list->file_offset_node = drm_mm_search_free(&mm->offset_manager, | |
1244 | obj->size / PAGE_SIZE, 0, 0); | |
1245 | if (!list->file_offset_node) { | |
1246 | DRM_ERROR("failed to allocate offset for bo %d\n", obj->name); | |
1247 | ret = -ENOMEM; | |
1248 | goto out_free_list; | |
1249 | } | |
1250 | ||
1251 | list->file_offset_node = drm_mm_get_block(list->file_offset_node, | |
1252 | obj->size / PAGE_SIZE, 0); | |
1253 | if (!list->file_offset_node) { | |
1254 | ret = -ENOMEM; | |
1255 | goto out_free_list; | |
1256 | } | |
1257 | ||
1258 | list->hash.key = list->file_offset_node->start; | |
1259 | if (drm_ht_insert_item(&mm->offset_hash, &list->hash)) { | |
1260 | DRM_ERROR("failed to add to map hash\n"); | |
5618ca6a | 1261 | ret = -ENOMEM; |
de151cf6 JB |
1262 | goto out_free_mm; |
1263 | } | |
1264 | ||
1265 | /* By now we should be all set, any drm_mmap request on the offset | |
1266 | * below will get to our mmap & fault handler */ | |
1267 | obj_priv->mmap_offset = ((uint64_t) list->hash.key) << PAGE_SHIFT; | |
1268 | ||
1269 | return 0; | |
1270 | ||
1271 | out_free_mm: | |
1272 | drm_mm_put_block(list->file_offset_node); | |
1273 | out_free_list: | |
9a298b2a | 1274 | kfree(list->map); |
de151cf6 JB |
1275 | |
1276 | return ret; | |
1277 | } | |
1278 | ||
901782b2 CW |
1279 | /** |
1280 | * i915_gem_release_mmap - remove physical page mappings | |
1281 | * @obj: obj in question | |
1282 | * | |
af901ca1 | 1283 | * Preserve the reservation of the mmapping with the DRM core code, but |
901782b2 CW |
1284 | * relinquish ownership of the pages back to the system. |
1285 | * | |
1286 | * It is vital that we remove the page mapping if we have mapped a tiled | |
1287 | * object through the GTT and then lose the fence register due to | |
1288 | * resource pressure. Similarly if the object has been moved out of the | |
1289 | * aperture, than pages mapped into userspace must be revoked. Removing the | |
1290 | * mapping will then trigger a page fault on the next user access, allowing | |
1291 | * fixup by i915_gem_fault(). | |
1292 | */ | |
d05ca301 | 1293 | void |
901782b2 CW |
1294 | i915_gem_release_mmap(struct drm_gem_object *obj) |
1295 | { | |
1296 | struct drm_device *dev = obj->dev; | |
23010e43 | 1297 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
901782b2 CW |
1298 | |
1299 | if (dev->dev_mapping) | |
1300 | unmap_mapping_range(dev->dev_mapping, | |
1301 | obj_priv->mmap_offset, obj->size, 1); | |
1302 | } | |
1303 | ||
ab00b3e5 JB |
1304 | static void |
1305 | i915_gem_free_mmap_offset(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); |
ab00b3e5 JB |
1309 | struct drm_gem_mm *mm = dev->mm_private; |
1310 | struct drm_map_list *list; | |
1311 | ||
1312 | list = &obj->map_list; | |
1313 | drm_ht_remove_item(&mm->offset_hash, &list->hash); | |
1314 | ||
1315 | if (list->file_offset_node) { | |
1316 | drm_mm_put_block(list->file_offset_node); | |
1317 | list->file_offset_node = NULL; | |
1318 | } | |
1319 | ||
1320 | if (list->map) { | |
9a298b2a | 1321 | kfree(list->map); |
ab00b3e5 JB |
1322 | list->map = NULL; |
1323 | } | |
1324 | ||
1325 | obj_priv->mmap_offset = 0; | |
1326 | } | |
1327 | ||
de151cf6 JB |
1328 | /** |
1329 | * i915_gem_get_gtt_alignment - return required GTT alignment for an object | |
1330 | * @obj: object to check | |
1331 | * | |
1332 | * Return the required GTT alignment for an object, taking into account | |
1333 | * potential fence register mapping if needed. | |
1334 | */ | |
1335 | static uint32_t | |
1336 | i915_gem_get_gtt_alignment(struct drm_gem_object *obj) | |
1337 | { | |
1338 | struct drm_device *dev = obj->dev; | |
23010e43 | 1339 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
1340 | int start, i; |
1341 | ||
1342 | /* | |
1343 | * Minimum alignment is 4k (GTT page size), but might be greater | |
1344 | * if a fence register is needed for the object. | |
1345 | */ | |
1346 | if (IS_I965G(dev) || obj_priv->tiling_mode == I915_TILING_NONE) | |
1347 | return 4096; | |
1348 | ||
1349 | /* | |
1350 | * Previous chips need to be aligned to the size of the smallest | |
1351 | * fence register that can contain the object. | |
1352 | */ | |
1353 | if (IS_I9XX(dev)) | |
1354 | start = 1024*1024; | |
1355 | else | |
1356 | start = 512*1024; | |
1357 | ||
1358 | for (i = start; i < obj->size; i <<= 1) | |
1359 | ; | |
1360 | ||
1361 | return i; | |
1362 | } | |
1363 | ||
1364 | /** | |
1365 | * i915_gem_mmap_gtt_ioctl - prepare an object for GTT mmap'ing | |
1366 | * @dev: DRM device | |
1367 | * @data: GTT mapping ioctl data | |
1368 | * @file_priv: GEM object info | |
1369 | * | |
1370 | * Simply returns the fake offset to userspace so it can mmap it. | |
1371 | * The mmap call will end up in drm_gem_mmap(), which will set things | |
1372 | * up so we can get faults in the handler above. | |
1373 | * | |
1374 | * The fault handler will take care of binding the object into the GTT | |
1375 | * (since it may have been evicted to make room for something), allocating | |
1376 | * a fence register, and mapping the appropriate aperture address into | |
1377 | * userspace. | |
1378 | */ | |
1379 | int | |
1380 | i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data, | |
1381 | struct drm_file *file_priv) | |
1382 | { | |
1383 | struct drm_i915_gem_mmap_gtt *args = data; | |
de151cf6 JB |
1384 | struct drm_gem_object *obj; |
1385 | struct drm_i915_gem_object *obj_priv; | |
1386 | int ret; | |
1387 | ||
1388 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1389 | return -ENODEV; | |
1390 | ||
1391 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
1392 | if (obj == NULL) | |
bf79cb91 | 1393 | return -ENOENT; |
de151cf6 JB |
1394 | |
1395 | mutex_lock(&dev->struct_mutex); | |
1396 | ||
23010e43 | 1397 | obj_priv = to_intel_bo(obj); |
de151cf6 | 1398 | |
ab18282d CW |
1399 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
1400 | DRM_ERROR("Attempting to mmap a purgeable buffer\n"); | |
1401 | drm_gem_object_unreference(obj); | |
1402 | mutex_unlock(&dev->struct_mutex); | |
1403 | return -EINVAL; | |
1404 | } | |
1405 | ||
1406 | ||
de151cf6 JB |
1407 | if (!obj_priv->mmap_offset) { |
1408 | ret = i915_gem_create_mmap_offset(obj); | |
13af1062 CW |
1409 | if (ret) { |
1410 | drm_gem_object_unreference(obj); | |
1411 | mutex_unlock(&dev->struct_mutex); | |
de151cf6 | 1412 | return ret; |
13af1062 | 1413 | } |
de151cf6 JB |
1414 | } |
1415 | ||
1416 | args->offset = obj_priv->mmap_offset; | |
1417 | ||
de151cf6 JB |
1418 | /* |
1419 | * Pull it into the GTT so that we have a page list (makes the | |
1420 | * initial fault faster and any subsequent flushing possible). | |
1421 | */ | |
1422 | if (!obj_priv->agp_mem) { | |
e67b8ce1 | 1423 | ret = i915_gem_object_bind_to_gtt(obj, 0); |
de151cf6 JB |
1424 | if (ret) { |
1425 | drm_gem_object_unreference(obj); | |
1426 | mutex_unlock(&dev->struct_mutex); | |
1427 | return ret; | |
1428 | } | |
de151cf6 JB |
1429 | } |
1430 | ||
1431 | drm_gem_object_unreference(obj); | |
1432 | mutex_unlock(&dev->struct_mutex); | |
1433 | ||
1434 | return 0; | |
1435 | } | |
1436 | ||
6911a9b8 | 1437 | void |
856fa198 | 1438 | i915_gem_object_put_pages(struct drm_gem_object *obj) |
673a394b | 1439 | { |
23010e43 | 1440 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
1441 | int page_count = obj->size / PAGE_SIZE; |
1442 | int i; | |
1443 | ||
856fa198 | 1444 | BUG_ON(obj_priv->pages_refcount == 0); |
bb6baf76 | 1445 | BUG_ON(obj_priv->madv == __I915_MADV_PURGED); |
673a394b | 1446 | |
856fa198 EA |
1447 | if (--obj_priv->pages_refcount != 0) |
1448 | return; | |
673a394b | 1449 | |
280b713b EA |
1450 | if (obj_priv->tiling_mode != I915_TILING_NONE) |
1451 | i915_gem_object_save_bit_17_swizzle(obj); | |
1452 | ||
3ef94daa | 1453 | if (obj_priv->madv == I915_MADV_DONTNEED) |
13a05fd9 | 1454 | obj_priv->dirty = 0; |
3ef94daa CW |
1455 | |
1456 | for (i = 0; i < page_count; i++) { | |
3ef94daa CW |
1457 | if (obj_priv->dirty) |
1458 | set_page_dirty(obj_priv->pages[i]); | |
1459 | ||
1460 | if (obj_priv->madv == I915_MADV_WILLNEED) | |
856fa198 | 1461 | mark_page_accessed(obj_priv->pages[i]); |
3ef94daa CW |
1462 | |
1463 | page_cache_release(obj_priv->pages[i]); | |
1464 | } | |
673a394b EA |
1465 | obj_priv->dirty = 0; |
1466 | ||
8e7d2b2c | 1467 | drm_free_large(obj_priv->pages); |
856fa198 | 1468 | obj_priv->pages = NULL; |
673a394b EA |
1469 | } |
1470 | ||
1471 | static void | |
852835f3 ZN |
1472 | i915_gem_object_move_to_active(struct drm_gem_object *obj, uint32_t seqno, |
1473 | struct intel_ring_buffer *ring) | |
673a394b EA |
1474 | { |
1475 | struct drm_device *dev = obj->dev; | |
1476 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 1477 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
852835f3 ZN |
1478 | BUG_ON(ring == NULL); |
1479 | obj_priv->ring = ring; | |
673a394b EA |
1480 | |
1481 | /* Add a reference if we're newly entering the active list. */ | |
1482 | if (!obj_priv->active) { | |
1483 | drm_gem_object_reference(obj); | |
1484 | obj_priv->active = 1; | |
1485 | } | |
1486 | /* Move from whatever list we were on to the tail of execution. */ | |
5e118f41 | 1487 | spin_lock(&dev_priv->mm.active_list_lock); |
852835f3 | 1488 | list_move_tail(&obj_priv->list, &ring->active_list); |
5e118f41 | 1489 | spin_unlock(&dev_priv->mm.active_list_lock); |
ce44b0ea | 1490 | obj_priv->last_rendering_seqno = seqno; |
673a394b EA |
1491 | } |
1492 | ||
ce44b0ea EA |
1493 | static void |
1494 | i915_gem_object_move_to_flushing(struct drm_gem_object *obj) | |
1495 | { | |
1496 | struct drm_device *dev = obj->dev; | |
1497 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 1498 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
ce44b0ea EA |
1499 | |
1500 | BUG_ON(!obj_priv->active); | |
1501 | list_move_tail(&obj_priv->list, &dev_priv->mm.flushing_list); | |
1502 | obj_priv->last_rendering_seqno = 0; | |
1503 | } | |
673a394b | 1504 | |
963b4836 CW |
1505 | /* Immediately discard the backing storage */ |
1506 | static void | |
1507 | i915_gem_object_truncate(struct drm_gem_object *obj) | |
1508 | { | |
23010e43 | 1509 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
bb6baf76 | 1510 | struct inode *inode; |
963b4836 | 1511 | |
ae9fed6b CW |
1512 | /* Our goal here is to return as much of the memory as |
1513 | * is possible back to the system as we are called from OOM. | |
1514 | * To do this we must instruct the shmfs to drop all of its | |
1515 | * backing pages, *now*. Here we mirror the actions taken | |
1516 | * when by shmem_delete_inode() to release the backing store. | |
1517 | */ | |
bb6baf76 | 1518 | inode = obj->filp->f_path.dentry->d_inode; |
ae9fed6b CW |
1519 | truncate_inode_pages(inode->i_mapping, 0); |
1520 | if (inode->i_op->truncate_range) | |
1521 | inode->i_op->truncate_range(inode, 0, (loff_t)-1); | |
bb6baf76 CW |
1522 | |
1523 | obj_priv->madv = __I915_MADV_PURGED; | |
963b4836 CW |
1524 | } |
1525 | ||
1526 | static inline int | |
1527 | i915_gem_object_is_purgeable(struct drm_i915_gem_object *obj_priv) | |
1528 | { | |
1529 | return obj_priv->madv == I915_MADV_DONTNEED; | |
1530 | } | |
1531 | ||
673a394b EA |
1532 | static void |
1533 | i915_gem_object_move_to_inactive(struct drm_gem_object *obj) | |
1534 | { | |
1535 | struct drm_device *dev = obj->dev; | |
1536 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 1537 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
1538 | |
1539 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
1540 | if (obj_priv->pin_count != 0) | |
1541 | list_del_init(&obj_priv->list); | |
1542 | else | |
1543 | list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list); | |
1544 | ||
99fcb766 DV |
1545 | BUG_ON(!list_empty(&obj_priv->gpu_write_list)); |
1546 | ||
ce44b0ea | 1547 | obj_priv->last_rendering_seqno = 0; |
852835f3 | 1548 | obj_priv->ring = NULL; |
673a394b EA |
1549 | if (obj_priv->active) { |
1550 | obj_priv->active = 0; | |
1551 | drm_gem_object_unreference(obj); | |
1552 | } | |
1553 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
1554 | } | |
1555 | ||
63560396 DV |
1556 | static void |
1557 | i915_gem_process_flushing_list(struct drm_device *dev, | |
852835f3 ZN |
1558 | uint32_t flush_domains, uint32_t seqno, |
1559 | struct intel_ring_buffer *ring) | |
63560396 DV |
1560 | { |
1561 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1562 | struct drm_i915_gem_object *obj_priv, *next; | |
1563 | ||
1564 | list_for_each_entry_safe(obj_priv, next, | |
1565 | &dev_priv->mm.gpu_write_list, | |
1566 | gpu_write_list) { | |
a8089e84 | 1567 | struct drm_gem_object *obj = &obj_priv->base; |
63560396 DV |
1568 | |
1569 | if ((obj->write_domain & flush_domains) == | |
852835f3 ZN |
1570 | obj->write_domain && |
1571 | obj_priv->ring->ring_flag == ring->ring_flag) { | |
63560396 DV |
1572 | uint32_t old_write_domain = obj->write_domain; |
1573 | ||
1574 | obj->write_domain = 0; | |
1575 | list_del_init(&obj_priv->gpu_write_list); | |
852835f3 | 1576 | i915_gem_object_move_to_active(obj, seqno, ring); |
63560396 DV |
1577 | |
1578 | /* update the fence lru list */ | |
007cc8ac DV |
1579 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) { |
1580 | struct drm_i915_fence_reg *reg = | |
1581 | &dev_priv->fence_regs[obj_priv->fence_reg]; | |
1582 | list_move_tail(®->lru_list, | |
63560396 | 1583 | &dev_priv->mm.fence_list); |
007cc8ac | 1584 | } |
63560396 DV |
1585 | |
1586 | trace_i915_gem_object_change_domain(obj, | |
1587 | obj->read_domains, | |
1588 | old_write_domain); | |
1589 | } | |
1590 | } | |
1591 | } | |
8187a2b7 | 1592 | |
5a5a0c64 | 1593 | uint32_t |
b962442e | 1594 | i915_add_request(struct drm_device *dev, struct drm_file *file_priv, |
852835f3 | 1595 | uint32_t flush_domains, struct intel_ring_buffer *ring) |
673a394b EA |
1596 | { |
1597 | drm_i915_private_t *dev_priv = dev->dev_private; | |
b962442e | 1598 | struct drm_i915_file_private *i915_file_priv = NULL; |
673a394b EA |
1599 | struct drm_i915_gem_request *request; |
1600 | uint32_t seqno; | |
1601 | int was_empty; | |
673a394b | 1602 | |
b962442e EA |
1603 | if (file_priv != NULL) |
1604 | i915_file_priv = file_priv->driver_priv; | |
1605 | ||
9a298b2a | 1606 | request = kzalloc(sizeof(*request), GFP_KERNEL); |
673a394b EA |
1607 | if (request == NULL) |
1608 | return 0; | |
1609 | ||
852835f3 | 1610 | seqno = ring->add_request(dev, ring, file_priv, flush_domains); |
673a394b EA |
1611 | |
1612 | request->seqno = seqno; | |
852835f3 | 1613 | request->ring = ring; |
673a394b | 1614 | request->emitted_jiffies = jiffies; |
852835f3 ZN |
1615 | was_empty = list_empty(&ring->request_list); |
1616 | list_add_tail(&request->list, &ring->request_list); | |
1617 | ||
b962442e EA |
1618 | if (i915_file_priv) { |
1619 | list_add_tail(&request->client_list, | |
1620 | &i915_file_priv->mm.request_list); | |
1621 | } else { | |
1622 | INIT_LIST_HEAD(&request->client_list); | |
1623 | } | |
673a394b | 1624 | |
ce44b0ea EA |
1625 | /* Associate any objects on the flushing list matching the write |
1626 | * domain we're flushing with our flush. | |
1627 | */ | |
63560396 | 1628 | if (flush_domains != 0) |
852835f3 | 1629 | i915_gem_process_flushing_list(dev, flush_domains, seqno, ring); |
ce44b0ea | 1630 | |
f65d9421 BG |
1631 | if (!dev_priv->mm.suspended) { |
1632 | mod_timer(&dev_priv->hangcheck_timer, jiffies + DRM_I915_HANGCHECK_PERIOD); | |
1633 | if (was_empty) | |
1634 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, HZ); | |
1635 | } | |
673a394b EA |
1636 | return seqno; |
1637 | } | |
1638 | ||
1639 | /** | |
1640 | * Command execution barrier | |
1641 | * | |
1642 | * Ensures that all commands in the ring are finished | |
1643 | * before signalling the CPU | |
1644 | */ | |
3043c60c | 1645 | static uint32_t |
852835f3 | 1646 | i915_retire_commands(struct drm_device *dev, struct intel_ring_buffer *ring) |
673a394b | 1647 | { |
673a394b | 1648 | uint32_t flush_domains = 0; |
673a394b EA |
1649 | |
1650 | /* The sampler always gets flushed on i965 (sigh) */ | |
1651 | if (IS_I965G(dev)) | |
1652 | flush_domains |= I915_GEM_DOMAIN_SAMPLER; | |
852835f3 ZN |
1653 | |
1654 | ring->flush(dev, ring, | |
1655 | I915_GEM_DOMAIN_COMMAND, flush_domains); | |
673a394b EA |
1656 | return flush_domains; |
1657 | } | |
1658 | ||
1659 | /** | |
1660 | * Moves buffers associated only with the given active seqno from the active | |
1661 | * to inactive list, potentially freeing them. | |
1662 | */ | |
1663 | static void | |
1664 | i915_gem_retire_request(struct drm_device *dev, | |
1665 | struct drm_i915_gem_request *request) | |
1666 | { | |
1667 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1668 | ||
1c5d22f7 CW |
1669 | trace_i915_gem_request_retire(dev, request->seqno); |
1670 | ||
673a394b EA |
1671 | /* Move any buffers on the active list that are no longer referenced |
1672 | * by the ringbuffer to the flushing/inactive lists as appropriate. | |
1673 | */ | |
5e118f41 | 1674 | spin_lock(&dev_priv->mm.active_list_lock); |
852835f3 | 1675 | while (!list_empty(&request->ring->active_list)) { |
673a394b EA |
1676 | struct drm_gem_object *obj; |
1677 | struct drm_i915_gem_object *obj_priv; | |
1678 | ||
852835f3 | 1679 | obj_priv = list_first_entry(&request->ring->active_list, |
673a394b EA |
1680 | struct drm_i915_gem_object, |
1681 | list); | |
a8089e84 | 1682 | obj = &obj_priv->base; |
673a394b EA |
1683 | |
1684 | /* If the seqno being retired doesn't match the oldest in the | |
1685 | * list, then the oldest in the list must still be newer than | |
1686 | * this seqno. | |
1687 | */ | |
1688 | if (obj_priv->last_rendering_seqno != request->seqno) | |
5e118f41 | 1689 | goto out; |
de151cf6 | 1690 | |
673a394b EA |
1691 | #if WATCH_LRU |
1692 | DRM_INFO("%s: retire %d moves to inactive list %p\n", | |
1693 | __func__, request->seqno, obj); | |
1694 | #endif | |
1695 | ||
ce44b0ea EA |
1696 | if (obj->write_domain != 0) |
1697 | i915_gem_object_move_to_flushing(obj); | |
68c84342 SL |
1698 | else { |
1699 | /* Take a reference on the object so it won't be | |
1700 | * freed while the spinlock is held. The list | |
1701 | * protection for this spinlock is safe when breaking | |
1702 | * the lock like this since the next thing we do | |
1703 | * is just get the head of the list again. | |
1704 | */ | |
1705 | drm_gem_object_reference(obj); | |
673a394b | 1706 | i915_gem_object_move_to_inactive(obj); |
68c84342 SL |
1707 | spin_unlock(&dev_priv->mm.active_list_lock); |
1708 | drm_gem_object_unreference(obj); | |
1709 | spin_lock(&dev_priv->mm.active_list_lock); | |
1710 | } | |
673a394b | 1711 | } |
5e118f41 CW |
1712 | out: |
1713 | spin_unlock(&dev_priv->mm.active_list_lock); | |
673a394b EA |
1714 | } |
1715 | ||
1716 | /** | |
1717 | * Returns true if seq1 is later than seq2. | |
1718 | */ | |
22be1724 | 1719 | bool |
673a394b EA |
1720 | i915_seqno_passed(uint32_t seq1, uint32_t seq2) |
1721 | { | |
1722 | return (int32_t)(seq1 - seq2) >= 0; | |
1723 | } | |
1724 | ||
1725 | uint32_t | |
852835f3 | 1726 | i915_get_gem_seqno(struct drm_device *dev, |
d1b851fc | 1727 | struct intel_ring_buffer *ring) |
673a394b | 1728 | { |
852835f3 | 1729 | return ring->get_gem_seqno(dev, ring); |
673a394b EA |
1730 | } |
1731 | ||
1732 | /** | |
1733 | * This function clears the request list as sequence numbers are passed. | |
1734 | */ | |
b09a1fec CW |
1735 | static void |
1736 | i915_gem_retire_requests_ring(struct drm_device *dev, | |
1737 | struct intel_ring_buffer *ring) | |
673a394b EA |
1738 | { |
1739 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1740 | uint32_t seqno; | |
1741 | ||
8187a2b7 | 1742 | if (!ring->status_page.page_addr |
852835f3 | 1743 | || list_empty(&ring->request_list)) |
6c0594a3 KW |
1744 | return; |
1745 | ||
852835f3 | 1746 | seqno = i915_get_gem_seqno(dev, ring); |
673a394b | 1747 | |
852835f3 | 1748 | while (!list_empty(&ring->request_list)) { |
673a394b EA |
1749 | struct drm_i915_gem_request *request; |
1750 | uint32_t retiring_seqno; | |
1751 | ||
852835f3 | 1752 | request = list_first_entry(&ring->request_list, |
673a394b EA |
1753 | struct drm_i915_gem_request, |
1754 | list); | |
1755 | retiring_seqno = request->seqno; | |
1756 | ||
1757 | if (i915_seqno_passed(seqno, retiring_seqno) || | |
ba1234d1 | 1758 | atomic_read(&dev_priv->mm.wedged)) { |
673a394b EA |
1759 | i915_gem_retire_request(dev, request); |
1760 | ||
1761 | list_del(&request->list); | |
b962442e | 1762 | list_del(&request->client_list); |
9a298b2a | 1763 | kfree(request); |
673a394b EA |
1764 | } else |
1765 | break; | |
1766 | } | |
9d34e5db CW |
1767 | |
1768 | if (unlikely (dev_priv->trace_irq_seqno && | |
1769 | i915_seqno_passed(dev_priv->trace_irq_seqno, seqno))) { | |
8187a2b7 ZN |
1770 | |
1771 | ring->user_irq_put(dev, ring); | |
9d34e5db CW |
1772 | dev_priv->trace_irq_seqno = 0; |
1773 | } | |
673a394b EA |
1774 | } |
1775 | ||
b09a1fec CW |
1776 | void |
1777 | i915_gem_retire_requests(struct drm_device *dev) | |
1778 | { | |
1779 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1780 | ||
be72615b CW |
1781 | if (!list_empty(&dev_priv->mm.deferred_free_list)) { |
1782 | struct drm_i915_gem_object *obj_priv, *tmp; | |
1783 | ||
1784 | /* We must be careful that during unbind() we do not | |
1785 | * accidentally infinitely recurse into retire requests. | |
1786 | * Currently: | |
1787 | * retire -> free -> unbind -> wait -> retire_ring | |
1788 | */ | |
1789 | list_for_each_entry_safe(obj_priv, tmp, | |
1790 | &dev_priv->mm.deferred_free_list, | |
1791 | list) | |
1792 | i915_gem_free_object_tail(&obj_priv->base); | |
1793 | } | |
1794 | ||
b09a1fec CW |
1795 | i915_gem_retire_requests_ring(dev, &dev_priv->render_ring); |
1796 | if (HAS_BSD(dev)) | |
1797 | i915_gem_retire_requests_ring(dev, &dev_priv->bsd_ring); | |
1798 | } | |
1799 | ||
673a394b EA |
1800 | void |
1801 | i915_gem_retire_work_handler(struct work_struct *work) | |
1802 | { | |
1803 | drm_i915_private_t *dev_priv; | |
1804 | struct drm_device *dev; | |
1805 | ||
1806 | dev_priv = container_of(work, drm_i915_private_t, | |
1807 | mm.retire_work.work); | |
1808 | dev = dev_priv->dev; | |
1809 | ||
1810 | mutex_lock(&dev->struct_mutex); | |
b09a1fec | 1811 | i915_gem_retire_requests(dev); |
d1b851fc | 1812 | |
6dbe2772 | 1813 | if (!dev_priv->mm.suspended && |
d1b851fc ZN |
1814 | (!list_empty(&dev_priv->render_ring.request_list) || |
1815 | (HAS_BSD(dev) && | |
1816 | !list_empty(&dev_priv->bsd_ring.request_list)))) | |
9c9fe1f8 | 1817 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, HZ); |
673a394b EA |
1818 | mutex_unlock(&dev->struct_mutex); |
1819 | } | |
1820 | ||
5a5a0c64 | 1821 | int |
852835f3 ZN |
1822 | i915_do_wait_request(struct drm_device *dev, uint32_t seqno, |
1823 | int interruptible, struct intel_ring_buffer *ring) | |
673a394b EA |
1824 | { |
1825 | drm_i915_private_t *dev_priv = dev->dev_private; | |
802c7eb6 | 1826 | u32 ier; |
673a394b EA |
1827 | int ret = 0; |
1828 | ||
1829 | BUG_ON(seqno == 0); | |
1830 | ||
ba1234d1 | 1831 | if (atomic_read(&dev_priv->mm.wedged)) |
ffed1d09 BG |
1832 | return -EIO; |
1833 | ||
852835f3 | 1834 | if (!i915_seqno_passed(ring->get_gem_seqno(dev, ring), seqno)) { |
bad720ff | 1835 | if (HAS_PCH_SPLIT(dev)) |
036a4a7d ZW |
1836 | ier = I915_READ(DEIER) | I915_READ(GTIER); |
1837 | else | |
1838 | ier = I915_READ(IER); | |
802c7eb6 JB |
1839 | if (!ier) { |
1840 | DRM_ERROR("something (likely vbetool) disabled " | |
1841 | "interrupts, re-enabling\n"); | |
1842 | i915_driver_irq_preinstall(dev); | |
1843 | i915_driver_irq_postinstall(dev); | |
1844 | } | |
1845 | ||
1c5d22f7 CW |
1846 | trace_i915_gem_request_wait_begin(dev, seqno); |
1847 | ||
852835f3 | 1848 | ring->waiting_gem_seqno = seqno; |
8187a2b7 | 1849 | ring->user_irq_get(dev, ring); |
48764bf4 | 1850 | if (interruptible) |
852835f3 ZN |
1851 | ret = wait_event_interruptible(ring->irq_queue, |
1852 | i915_seqno_passed( | |
1853 | ring->get_gem_seqno(dev, ring), seqno) | |
1854 | || atomic_read(&dev_priv->mm.wedged)); | |
48764bf4 | 1855 | else |
852835f3 ZN |
1856 | wait_event(ring->irq_queue, |
1857 | i915_seqno_passed( | |
1858 | ring->get_gem_seqno(dev, ring), seqno) | |
1859 | || atomic_read(&dev_priv->mm.wedged)); | |
48764bf4 | 1860 | |
8187a2b7 | 1861 | ring->user_irq_put(dev, ring); |
852835f3 | 1862 | ring->waiting_gem_seqno = 0; |
1c5d22f7 CW |
1863 | |
1864 | trace_i915_gem_request_wait_end(dev, seqno); | |
673a394b | 1865 | } |
ba1234d1 | 1866 | if (atomic_read(&dev_priv->mm.wedged)) |
673a394b EA |
1867 | ret = -EIO; |
1868 | ||
1869 | if (ret && ret != -ERESTARTSYS) | |
1870 | DRM_ERROR("%s returns %d (awaiting %d at %d)\n", | |
852835f3 | 1871 | __func__, ret, seqno, ring->get_gem_seqno(dev, ring)); |
673a394b EA |
1872 | |
1873 | /* Directly dispatch request retiring. While we have the work queue | |
1874 | * to handle this, the waiter on a request often wants an associated | |
1875 | * buffer to have made it to the inactive list, and we would need | |
1876 | * a separate wait queue to handle that. | |
1877 | */ | |
1878 | if (ret == 0) | |
b09a1fec | 1879 | i915_gem_retire_requests_ring(dev, ring); |
673a394b EA |
1880 | |
1881 | return ret; | |
1882 | } | |
1883 | ||
48764bf4 DV |
1884 | /** |
1885 | * Waits for a sequence number to be signaled, and cleans up the | |
1886 | * request and object lists appropriately for that event. | |
1887 | */ | |
1888 | static int | |
852835f3 ZN |
1889 | i915_wait_request(struct drm_device *dev, uint32_t seqno, |
1890 | struct intel_ring_buffer *ring) | |
48764bf4 | 1891 | { |
852835f3 | 1892 | return i915_do_wait_request(dev, seqno, 1, ring); |
48764bf4 DV |
1893 | } |
1894 | ||
8187a2b7 ZN |
1895 | static void |
1896 | i915_gem_flush(struct drm_device *dev, | |
1897 | uint32_t invalidate_domains, | |
1898 | uint32_t flush_domains) | |
1899 | { | |
1900 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1901 | if (flush_domains & I915_GEM_DOMAIN_CPU) | |
1902 | drm_agp_chipset_flush(dev); | |
1903 | dev_priv->render_ring.flush(dev, &dev_priv->render_ring, | |
1904 | invalidate_domains, | |
1905 | flush_domains); | |
d1b851fc ZN |
1906 | |
1907 | if (HAS_BSD(dev)) | |
1908 | dev_priv->bsd_ring.flush(dev, &dev_priv->bsd_ring, | |
1909 | invalidate_domains, | |
1910 | flush_domains); | |
8187a2b7 ZN |
1911 | } |
1912 | ||
673a394b EA |
1913 | /** |
1914 | * Ensures that all rendering to the object has completed and the object is | |
1915 | * safe to unbind from the GTT or access from the CPU. | |
1916 | */ | |
1917 | static int | |
1918 | i915_gem_object_wait_rendering(struct drm_gem_object *obj) | |
1919 | { | |
1920 | struct drm_device *dev = obj->dev; | |
23010e43 | 1921 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
1922 | int ret; |
1923 | ||
e47c68e9 EA |
1924 | /* This function only exists to support waiting for existing rendering, |
1925 | * not for emitting required flushes. | |
673a394b | 1926 | */ |
e47c68e9 | 1927 | BUG_ON((obj->write_domain & I915_GEM_GPU_DOMAINS) != 0); |
673a394b EA |
1928 | |
1929 | /* If there is rendering queued on the buffer being evicted, wait for | |
1930 | * it. | |
1931 | */ | |
1932 | if (obj_priv->active) { | |
1933 | #if WATCH_BUF | |
1934 | DRM_INFO("%s: object %p wait for seqno %08x\n", | |
1935 | __func__, obj, obj_priv->last_rendering_seqno); | |
1936 | #endif | |
852835f3 ZN |
1937 | ret = i915_wait_request(dev, |
1938 | obj_priv->last_rendering_seqno, obj_priv->ring); | |
673a394b EA |
1939 | if (ret != 0) |
1940 | return ret; | |
1941 | } | |
1942 | ||
1943 | return 0; | |
1944 | } | |
1945 | ||
1946 | /** | |
1947 | * Unbinds an object from the GTT aperture. | |
1948 | */ | |
0f973f27 | 1949 | int |
673a394b EA |
1950 | i915_gem_object_unbind(struct drm_gem_object *obj) |
1951 | { | |
1952 | struct drm_device *dev = obj->dev; | |
4a87b8ca | 1953 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 1954 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
1955 | int ret = 0; |
1956 | ||
1957 | #if WATCH_BUF | |
1958 | DRM_INFO("%s:%d %p\n", __func__, __LINE__, obj); | |
1959 | DRM_INFO("gtt_space %p\n", obj_priv->gtt_space); | |
1960 | #endif | |
1961 | if (obj_priv->gtt_space == NULL) | |
1962 | return 0; | |
1963 | ||
1964 | if (obj_priv->pin_count != 0) { | |
1965 | DRM_ERROR("Attempting to unbind pinned buffer\n"); | |
1966 | return -EINVAL; | |
1967 | } | |
1968 | ||
5323fd04 EA |
1969 | /* blow away mappings if mapped through GTT */ |
1970 | i915_gem_release_mmap(obj); | |
1971 | ||
673a394b EA |
1972 | /* Move the object to the CPU domain to ensure that |
1973 | * any possible CPU writes while it's not in the GTT | |
1974 | * are flushed when we go to remap it. This will | |
1975 | * also ensure that all pending GPU writes are finished | |
1976 | * before we unbind. | |
1977 | */ | |
e47c68e9 | 1978 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
8dc1775d | 1979 | if (ret == -ERESTARTSYS) |
673a394b | 1980 | return ret; |
8dc1775d CW |
1981 | /* Continue on if we fail due to EIO, the GPU is hung so we |
1982 | * should be safe and we need to cleanup or else we might | |
1983 | * cause memory corruption through use-after-free. | |
1984 | */ | |
673a394b | 1985 | |
96b47b65 DV |
1986 | /* release the fence reg _after_ flushing */ |
1987 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) | |
1988 | i915_gem_clear_fence_reg(obj); | |
1989 | ||
673a394b EA |
1990 | if (obj_priv->agp_mem != NULL) { |
1991 | drm_unbind_agp(obj_priv->agp_mem); | |
1992 | drm_free_agp(obj_priv->agp_mem, obj->size / PAGE_SIZE); | |
1993 | obj_priv->agp_mem = NULL; | |
1994 | } | |
1995 | ||
856fa198 | 1996 | i915_gem_object_put_pages(obj); |
a32808c0 | 1997 | BUG_ON(obj_priv->pages_refcount); |
673a394b EA |
1998 | |
1999 | if (obj_priv->gtt_space) { | |
2000 | atomic_dec(&dev->gtt_count); | |
2001 | atomic_sub(obj->size, &dev->gtt_memory); | |
2002 | ||
2003 | drm_mm_put_block(obj_priv->gtt_space); | |
2004 | obj_priv->gtt_space = NULL; | |
2005 | } | |
2006 | ||
2007 | /* Remove ourselves from the LRU list if present. */ | |
4a87b8ca | 2008 | spin_lock(&dev_priv->mm.active_list_lock); |
673a394b EA |
2009 | if (!list_empty(&obj_priv->list)) |
2010 | list_del_init(&obj_priv->list); | |
4a87b8ca | 2011 | spin_unlock(&dev_priv->mm.active_list_lock); |
673a394b | 2012 | |
963b4836 CW |
2013 | if (i915_gem_object_is_purgeable(obj_priv)) |
2014 | i915_gem_object_truncate(obj); | |
2015 | ||
1c5d22f7 CW |
2016 | trace_i915_gem_object_unbind(obj); |
2017 | ||
8dc1775d | 2018 | return ret; |
673a394b EA |
2019 | } |
2020 | ||
b47eb4a2 | 2021 | int |
4df2faf4 DV |
2022 | i915_gpu_idle(struct drm_device *dev) |
2023 | { | |
2024 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2025 | bool lists_empty; | |
d1b851fc | 2026 | uint32_t seqno1, seqno2; |
852835f3 | 2027 | int ret; |
4df2faf4 DV |
2028 | |
2029 | spin_lock(&dev_priv->mm.active_list_lock); | |
d1b851fc ZN |
2030 | lists_empty = (list_empty(&dev_priv->mm.flushing_list) && |
2031 | list_empty(&dev_priv->render_ring.active_list) && | |
2032 | (!HAS_BSD(dev) || | |
2033 | list_empty(&dev_priv->bsd_ring.active_list))); | |
4df2faf4 DV |
2034 | spin_unlock(&dev_priv->mm.active_list_lock); |
2035 | ||
2036 | if (lists_empty) | |
2037 | return 0; | |
2038 | ||
2039 | /* Flush everything onto the inactive list. */ | |
2040 | i915_gem_flush(dev, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); | |
d1b851fc | 2041 | seqno1 = i915_add_request(dev, NULL, I915_GEM_GPU_DOMAINS, |
852835f3 | 2042 | &dev_priv->render_ring); |
d1b851fc | 2043 | if (seqno1 == 0) |
4df2faf4 | 2044 | return -ENOMEM; |
d1b851fc ZN |
2045 | ret = i915_wait_request(dev, seqno1, &dev_priv->render_ring); |
2046 | ||
2047 | if (HAS_BSD(dev)) { | |
2048 | seqno2 = i915_add_request(dev, NULL, I915_GEM_GPU_DOMAINS, | |
2049 | &dev_priv->bsd_ring); | |
2050 | if (seqno2 == 0) | |
2051 | return -ENOMEM; | |
2052 | ||
2053 | ret = i915_wait_request(dev, seqno2, &dev_priv->bsd_ring); | |
2054 | if (ret) | |
2055 | return ret; | |
2056 | } | |
2057 | ||
4df2faf4 | 2058 | |
852835f3 | 2059 | return ret; |
4df2faf4 DV |
2060 | } |
2061 | ||
6911a9b8 | 2062 | int |
4bdadb97 CW |
2063 | i915_gem_object_get_pages(struct drm_gem_object *obj, |
2064 | gfp_t gfpmask) | |
673a394b | 2065 | { |
23010e43 | 2066 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
2067 | int page_count, i; |
2068 | struct address_space *mapping; | |
2069 | struct inode *inode; | |
2070 | struct page *page; | |
673a394b | 2071 | |
778c3544 DV |
2072 | BUG_ON(obj_priv->pages_refcount |
2073 | == DRM_I915_GEM_OBJECT_MAX_PAGES_REFCOUNT); | |
2074 | ||
856fa198 | 2075 | if (obj_priv->pages_refcount++ != 0) |
673a394b EA |
2076 | return 0; |
2077 | ||
2078 | /* Get the list of pages out of our struct file. They'll be pinned | |
2079 | * at this point until we release them. | |
2080 | */ | |
2081 | page_count = obj->size / PAGE_SIZE; | |
856fa198 | 2082 | BUG_ON(obj_priv->pages != NULL); |
8e7d2b2c | 2083 | obj_priv->pages = drm_calloc_large(page_count, sizeof(struct page *)); |
856fa198 | 2084 | if (obj_priv->pages == NULL) { |
856fa198 | 2085 | obj_priv->pages_refcount--; |
673a394b EA |
2086 | return -ENOMEM; |
2087 | } | |
2088 | ||
2089 | inode = obj->filp->f_path.dentry->d_inode; | |
2090 | mapping = inode->i_mapping; | |
2091 | for (i = 0; i < page_count; i++) { | |
4bdadb97 | 2092 | page = read_cache_page_gfp(mapping, i, |
985b823b | 2093 | GFP_HIGHUSER | |
4bdadb97 | 2094 | __GFP_COLD | |
cd9f040d | 2095 | __GFP_RECLAIMABLE | |
4bdadb97 | 2096 | gfpmask); |
1f2b1013 CW |
2097 | if (IS_ERR(page)) |
2098 | goto err_pages; | |
2099 | ||
856fa198 | 2100 | obj_priv->pages[i] = page; |
673a394b | 2101 | } |
280b713b EA |
2102 | |
2103 | if (obj_priv->tiling_mode != I915_TILING_NONE) | |
2104 | i915_gem_object_do_bit_17_swizzle(obj); | |
2105 | ||
673a394b | 2106 | return 0; |
1f2b1013 CW |
2107 | |
2108 | err_pages: | |
2109 | while (i--) | |
2110 | page_cache_release(obj_priv->pages[i]); | |
2111 | ||
2112 | drm_free_large(obj_priv->pages); | |
2113 | obj_priv->pages = NULL; | |
2114 | obj_priv->pages_refcount--; | |
2115 | return PTR_ERR(page); | |
673a394b EA |
2116 | } |
2117 | ||
4e901fdc EA |
2118 | static void sandybridge_write_fence_reg(struct drm_i915_fence_reg *reg) |
2119 | { | |
2120 | struct drm_gem_object *obj = reg->obj; | |
2121 | struct drm_device *dev = obj->dev; | |
2122 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2123 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
4e901fdc EA |
2124 | int regnum = obj_priv->fence_reg; |
2125 | uint64_t val; | |
2126 | ||
2127 | val = (uint64_t)((obj_priv->gtt_offset + obj->size - 4096) & | |
2128 | 0xfffff000) << 32; | |
2129 | val |= obj_priv->gtt_offset & 0xfffff000; | |
2130 | val |= (uint64_t)((obj_priv->stride / 128) - 1) << | |
2131 | SANDYBRIDGE_FENCE_PITCH_SHIFT; | |
2132 | ||
2133 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2134 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; | |
2135 | val |= I965_FENCE_REG_VALID; | |
2136 | ||
2137 | I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + (regnum * 8), val); | |
2138 | } | |
2139 | ||
de151cf6 JB |
2140 | static void i965_write_fence_reg(struct drm_i915_fence_reg *reg) |
2141 | { | |
2142 | struct drm_gem_object *obj = reg->obj; | |
2143 | struct drm_device *dev = obj->dev; | |
2144 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2145 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
2146 | int regnum = obj_priv->fence_reg; |
2147 | uint64_t val; | |
2148 | ||
2149 | val = (uint64_t)((obj_priv->gtt_offset + obj->size - 4096) & | |
2150 | 0xfffff000) << 32; | |
2151 | val |= obj_priv->gtt_offset & 0xfffff000; | |
2152 | val |= ((obj_priv->stride / 128) - 1) << I965_FENCE_PITCH_SHIFT; | |
2153 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2154 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; | |
2155 | val |= I965_FENCE_REG_VALID; | |
2156 | ||
2157 | I915_WRITE64(FENCE_REG_965_0 + (regnum * 8), val); | |
2158 | } | |
2159 | ||
2160 | static void i915_write_fence_reg(struct drm_i915_fence_reg *reg) | |
2161 | { | |
2162 | struct drm_gem_object *obj = reg->obj; | |
2163 | struct drm_device *dev = obj->dev; | |
2164 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2165 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 | 2166 | int regnum = obj_priv->fence_reg; |
0f973f27 | 2167 | int tile_width; |
dc529a4f | 2168 | uint32_t fence_reg, val; |
de151cf6 JB |
2169 | uint32_t pitch_val; |
2170 | ||
2171 | if ((obj_priv->gtt_offset & ~I915_FENCE_START_MASK) || | |
2172 | (obj_priv->gtt_offset & (obj->size - 1))) { | |
f06da264 | 2173 | WARN(1, "%s: object 0x%08x not 1M or size (0x%zx) aligned\n", |
0f973f27 | 2174 | __func__, obj_priv->gtt_offset, obj->size); |
de151cf6 JB |
2175 | return; |
2176 | } | |
2177 | ||
0f973f27 JB |
2178 | if (obj_priv->tiling_mode == I915_TILING_Y && |
2179 | HAS_128_BYTE_Y_TILING(dev)) | |
2180 | tile_width = 128; | |
de151cf6 | 2181 | else |
0f973f27 JB |
2182 | tile_width = 512; |
2183 | ||
2184 | /* Note: pitch better be a power of two tile widths */ | |
2185 | pitch_val = obj_priv->stride / tile_width; | |
2186 | pitch_val = ffs(pitch_val) - 1; | |
de151cf6 | 2187 | |
c36a2a6d DV |
2188 | if (obj_priv->tiling_mode == I915_TILING_Y && |
2189 | HAS_128_BYTE_Y_TILING(dev)) | |
2190 | WARN_ON(pitch_val > I830_FENCE_MAX_PITCH_VAL); | |
2191 | else | |
2192 | WARN_ON(pitch_val > I915_FENCE_MAX_PITCH_VAL); | |
2193 | ||
de151cf6 JB |
2194 | val = obj_priv->gtt_offset; |
2195 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2196 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; | |
2197 | val |= I915_FENCE_SIZE_BITS(obj->size); | |
2198 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; | |
2199 | val |= I830_FENCE_REG_VALID; | |
2200 | ||
dc529a4f EA |
2201 | if (regnum < 8) |
2202 | fence_reg = FENCE_REG_830_0 + (regnum * 4); | |
2203 | else | |
2204 | fence_reg = FENCE_REG_945_8 + ((regnum - 8) * 4); | |
2205 | I915_WRITE(fence_reg, val); | |
de151cf6 JB |
2206 | } |
2207 | ||
2208 | static void i830_write_fence_reg(struct drm_i915_fence_reg *reg) | |
2209 | { | |
2210 | struct drm_gem_object *obj = reg->obj; | |
2211 | struct drm_device *dev = obj->dev; | |
2212 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2213 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
2214 | int regnum = obj_priv->fence_reg; |
2215 | uint32_t val; | |
2216 | uint32_t pitch_val; | |
8d7773a3 | 2217 | uint32_t fence_size_bits; |
de151cf6 | 2218 | |
8d7773a3 | 2219 | if ((obj_priv->gtt_offset & ~I830_FENCE_START_MASK) || |
de151cf6 | 2220 | (obj_priv->gtt_offset & (obj->size - 1))) { |
8d7773a3 | 2221 | WARN(1, "%s: object 0x%08x not 512K or size aligned\n", |
0f973f27 | 2222 | __func__, obj_priv->gtt_offset); |
de151cf6 JB |
2223 | return; |
2224 | } | |
2225 | ||
e76a16de EA |
2226 | pitch_val = obj_priv->stride / 128; |
2227 | pitch_val = ffs(pitch_val) - 1; | |
2228 | WARN_ON(pitch_val > I830_FENCE_MAX_PITCH_VAL); | |
2229 | ||
de151cf6 JB |
2230 | val = obj_priv->gtt_offset; |
2231 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2232 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; | |
8d7773a3 DV |
2233 | fence_size_bits = I830_FENCE_SIZE_BITS(obj->size); |
2234 | WARN_ON(fence_size_bits & ~0x00000f00); | |
2235 | val |= fence_size_bits; | |
de151cf6 JB |
2236 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; |
2237 | val |= I830_FENCE_REG_VALID; | |
2238 | ||
2239 | I915_WRITE(FENCE_REG_830_0 + (regnum * 4), val); | |
de151cf6 JB |
2240 | } |
2241 | ||
ae3db24a DV |
2242 | static int i915_find_fence_reg(struct drm_device *dev) |
2243 | { | |
2244 | struct drm_i915_fence_reg *reg = NULL; | |
2245 | struct drm_i915_gem_object *obj_priv = NULL; | |
2246 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2247 | struct drm_gem_object *obj = NULL; | |
2248 | int i, avail, ret; | |
2249 | ||
2250 | /* First try to find a free reg */ | |
2251 | avail = 0; | |
2252 | for (i = dev_priv->fence_reg_start; i < dev_priv->num_fence_regs; i++) { | |
2253 | reg = &dev_priv->fence_regs[i]; | |
2254 | if (!reg->obj) | |
2255 | return i; | |
2256 | ||
23010e43 | 2257 | obj_priv = to_intel_bo(reg->obj); |
ae3db24a DV |
2258 | if (!obj_priv->pin_count) |
2259 | avail++; | |
2260 | } | |
2261 | ||
2262 | if (avail == 0) | |
2263 | return -ENOSPC; | |
2264 | ||
2265 | /* None available, try to steal one or wait for a user to finish */ | |
2266 | i = I915_FENCE_REG_NONE; | |
007cc8ac DV |
2267 | list_for_each_entry(reg, &dev_priv->mm.fence_list, |
2268 | lru_list) { | |
2269 | obj = reg->obj; | |
2270 | obj_priv = to_intel_bo(obj); | |
ae3db24a DV |
2271 | |
2272 | if (obj_priv->pin_count) | |
2273 | continue; | |
2274 | ||
2275 | /* found one! */ | |
2276 | i = obj_priv->fence_reg; | |
2277 | break; | |
2278 | } | |
2279 | ||
2280 | BUG_ON(i == I915_FENCE_REG_NONE); | |
2281 | ||
2282 | /* We only have a reference on obj from the active list. put_fence_reg | |
2283 | * might drop that one, causing a use-after-free in it. So hold a | |
2284 | * private reference to obj like the other callers of put_fence_reg | |
2285 | * (set_tiling ioctl) do. */ | |
2286 | drm_gem_object_reference(obj); | |
2287 | ret = i915_gem_object_put_fence_reg(obj); | |
2288 | drm_gem_object_unreference(obj); | |
2289 | if (ret != 0) | |
2290 | return ret; | |
2291 | ||
2292 | return i; | |
2293 | } | |
2294 | ||
de151cf6 JB |
2295 | /** |
2296 | * i915_gem_object_get_fence_reg - set up a fence reg for an object | |
2297 | * @obj: object to map through a fence reg | |
2298 | * | |
2299 | * When mapping objects through the GTT, userspace wants to be able to write | |
2300 | * to them without having to worry about swizzling if the object is tiled. | |
2301 | * | |
2302 | * This function walks the fence regs looking for a free one for @obj, | |
2303 | * stealing one if it can't find any. | |
2304 | * | |
2305 | * It then sets up the reg based on the object's properties: address, pitch | |
2306 | * and tiling format. | |
2307 | */ | |
8c4b8c3f CW |
2308 | int |
2309 | i915_gem_object_get_fence_reg(struct drm_gem_object *obj) | |
de151cf6 JB |
2310 | { |
2311 | struct drm_device *dev = obj->dev; | |
79e53945 | 2312 | struct drm_i915_private *dev_priv = dev->dev_private; |
23010e43 | 2313 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 | 2314 | struct drm_i915_fence_reg *reg = NULL; |
ae3db24a | 2315 | int ret; |
de151cf6 | 2316 | |
a09ba7fa EA |
2317 | /* Just update our place in the LRU if our fence is getting used. */ |
2318 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) { | |
007cc8ac DV |
2319 | reg = &dev_priv->fence_regs[obj_priv->fence_reg]; |
2320 | list_move_tail(®->lru_list, &dev_priv->mm.fence_list); | |
a09ba7fa EA |
2321 | return 0; |
2322 | } | |
2323 | ||
de151cf6 JB |
2324 | switch (obj_priv->tiling_mode) { |
2325 | case I915_TILING_NONE: | |
2326 | WARN(1, "allocating a fence for non-tiled object?\n"); | |
2327 | break; | |
2328 | case I915_TILING_X: | |
0f973f27 JB |
2329 | if (!obj_priv->stride) |
2330 | return -EINVAL; | |
2331 | WARN((obj_priv->stride & (512 - 1)), | |
2332 | "object 0x%08x is X tiled but has non-512B pitch\n", | |
2333 | obj_priv->gtt_offset); | |
de151cf6 JB |
2334 | break; |
2335 | case I915_TILING_Y: | |
0f973f27 JB |
2336 | if (!obj_priv->stride) |
2337 | return -EINVAL; | |
2338 | WARN((obj_priv->stride & (128 - 1)), | |
2339 | "object 0x%08x is Y tiled but has non-128B pitch\n", | |
2340 | obj_priv->gtt_offset); | |
de151cf6 JB |
2341 | break; |
2342 | } | |
2343 | ||
ae3db24a DV |
2344 | ret = i915_find_fence_reg(dev); |
2345 | if (ret < 0) | |
2346 | return ret; | |
de151cf6 | 2347 | |
ae3db24a DV |
2348 | obj_priv->fence_reg = ret; |
2349 | reg = &dev_priv->fence_regs[obj_priv->fence_reg]; | |
007cc8ac | 2350 | list_add_tail(®->lru_list, &dev_priv->mm.fence_list); |
a09ba7fa | 2351 | |
de151cf6 JB |
2352 | reg->obj = obj; |
2353 | ||
e259befd CW |
2354 | switch (INTEL_INFO(dev)->gen) { |
2355 | case 6: | |
4e901fdc | 2356 | sandybridge_write_fence_reg(reg); |
e259befd CW |
2357 | break; |
2358 | case 5: | |
2359 | case 4: | |
de151cf6 | 2360 | i965_write_fence_reg(reg); |
e259befd CW |
2361 | break; |
2362 | case 3: | |
de151cf6 | 2363 | i915_write_fence_reg(reg); |
e259befd CW |
2364 | break; |
2365 | case 2: | |
de151cf6 | 2366 | i830_write_fence_reg(reg); |
e259befd CW |
2367 | break; |
2368 | } | |
d9ddcb96 | 2369 | |
ae3db24a DV |
2370 | trace_i915_gem_object_get_fence(obj, obj_priv->fence_reg, |
2371 | obj_priv->tiling_mode); | |
1c5d22f7 | 2372 | |
d9ddcb96 | 2373 | return 0; |
de151cf6 JB |
2374 | } |
2375 | ||
2376 | /** | |
2377 | * i915_gem_clear_fence_reg - clear out fence register info | |
2378 | * @obj: object to clear | |
2379 | * | |
2380 | * Zeroes out the fence register itself and clears out the associated | |
2381 | * data structures in dev_priv and obj_priv. | |
2382 | */ | |
2383 | static void | |
2384 | i915_gem_clear_fence_reg(struct drm_gem_object *obj) | |
2385 | { | |
2386 | struct drm_device *dev = obj->dev; | |
79e53945 | 2387 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 2388 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
007cc8ac DV |
2389 | struct drm_i915_fence_reg *reg = |
2390 | &dev_priv->fence_regs[obj_priv->fence_reg]; | |
e259befd | 2391 | uint32_t fence_reg; |
de151cf6 | 2392 | |
e259befd CW |
2393 | switch (INTEL_INFO(dev)->gen) { |
2394 | case 6: | |
4e901fdc EA |
2395 | I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + |
2396 | (obj_priv->fence_reg * 8), 0); | |
e259befd CW |
2397 | break; |
2398 | case 5: | |
2399 | case 4: | |
de151cf6 | 2400 | I915_WRITE64(FENCE_REG_965_0 + (obj_priv->fence_reg * 8), 0); |
e259befd CW |
2401 | break; |
2402 | case 3: | |
2403 | if (obj_priv->fence_reg > 8) | |
2404 | fence_reg = FENCE_REG_945_8 + (obj_priv->fence_reg - 8) * 4; | |
dc529a4f | 2405 | else |
e259befd CW |
2406 | case 2: |
2407 | fence_reg = FENCE_REG_830_0 + obj_priv->fence_reg * 4; | |
dc529a4f EA |
2408 | |
2409 | I915_WRITE(fence_reg, 0); | |
e259befd | 2410 | break; |
dc529a4f | 2411 | } |
de151cf6 | 2412 | |
007cc8ac | 2413 | reg->obj = NULL; |
de151cf6 | 2414 | obj_priv->fence_reg = I915_FENCE_REG_NONE; |
007cc8ac | 2415 | list_del_init(®->lru_list); |
de151cf6 JB |
2416 | } |
2417 | ||
52dc7d32 CW |
2418 | /** |
2419 | * i915_gem_object_put_fence_reg - waits on outstanding fenced access | |
2420 | * to the buffer to finish, and then resets the fence register. | |
2421 | * @obj: tiled object holding a fence register. | |
2422 | * | |
2423 | * Zeroes out the fence register itself and clears out the associated | |
2424 | * data structures in dev_priv and obj_priv. | |
2425 | */ | |
2426 | int | |
2427 | i915_gem_object_put_fence_reg(struct drm_gem_object *obj) | |
2428 | { | |
2429 | struct drm_device *dev = obj->dev; | |
23010e43 | 2430 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
52dc7d32 CW |
2431 | |
2432 | if (obj_priv->fence_reg == I915_FENCE_REG_NONE) | |
2433 | return 0; | |
2434 | ||
10ae9bd2 DV |
2435 | /* If we've changed tiling, GTT-mappings of the object |
2436 | * need to re-fault to ensure that the correct fence register | |
2437 | * setup is in place. | |
2438 | */ | |
2439 | i915_gem_release_mmap(obj); | |
2440 | ||
52dc7d32 CW |
2441 | /* On the i915, GPU access to tiled buffers is via a fence, |
2442 | * therefore we must wait for any outstanding access to complete | |
2443 | * before clearing the fence. | |
2444 | */ | |
2445 | if (!IS_I965G(dev)) { | |
2446 | int ret; | |
2447 | ||
2dafb1e0 CW |
2448 | ret = i915_gem_object_flush_gpu_write_domain(obj); |
2449 | if (ret != 0) | |
2450 | return ret; | |
2451 | ||
52dc7d32 CW |
2452 | ret = i915_gem_object_wait_rendering(obj); |
2453 | if (ret != 0) | |
2454 | return ret; | |
2455 | } | |
2456 | ||
4a726612 | 2457 | i915_gem_object_flush_gtt_write_domain(obj); |
52dc7d32 CW |
2458 | i915_gem_clear_fence_reg (obj); |
2459 | ||
2460 | return 0; | |
2461 | } | |
2462 | ||
673a394b EA |
2463 | /** |
2464 | * Finds free space in the GTT aperture and binds the object there. | |
2465 | */ | |
2466 | static int | |
2467 | i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment) | |
2468 | { | |
2469 | struct drm_device *dev = obj->dev; | |
2470 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2471 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b | 2472 | struct drm_mm_node *free_space; |
4bdadb97 | 2473 | gfp_t gfpmask = __GFP_NORETRY | __GFP_NOWARN; |
07f73f69 | 2474 | int ret; |
673a394b | 2475 | |
bb6baf76 | 2476 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
3ef94daa CW |
2477 | DRM_ERROR("Attempting to bind a purgeable object\n"); |
2478 | return -EINVAL; | |
2479 | } | |
2480 | ||
673a394b | 2481 | if (alignment == 0) |
0f973f27 | 2482 | alignment = i915_gem_get_gtt_alignment(obj); |
8d7773a3 | 2483 | if (alignment & (i915_gem_get_gtt_alignment(obj) - 1)) { |
673a394b EA |
2484 | DRM_ERROR("Invalid object alignment requested %u\n", alignment); |
2485 | return -EINVAL; | |
2486 | } | |
2487 | ||
654fc607 CW |
2488 | /* If the object is bigger than the entire aperture, reject it early |
2489 | * before evicting everything in a vain attempt to find space. | |
2490 | */ | |
2491 | if (obj->size > dev->gtt_total) { | |
2492 | DRM_ERROR("Attempting to bind an object larger than the aperture\n"); | |
2493 | return -E2BIG; | |
2494 | } | |
2495 | ||
673a394b EA |
2496 | search_free: |
2497 | free_space = drm_mm_search_free(&dev_priv->mm.gtt_space, | |
2498 | obj->size, alignment, 0); | |
2499 | if (free_space != NULL) { | |
2500 | obj_priv->gtt_space = drm_mm_get_block(free_space, obj->size, | |
2501 | alignment); | |
db3307a9 | 2502 | if (obj_priv->gtt_space != NULL) |
673a394b | 2503 | obj_priv->gtt_offset = obj_priv->gtt_space->start; |
673a394b EA |
2504 | } |
2505 | if (obj_priv->gtt_space == NULL) { | |
2506 | /* If the gtt is empty and we're still having trouble | |
2507 | * fitting our object in, we're out of memory. | |
2508 | */ | |
2509 | #if WATCH_LRU | |
2510 | DRM_INFO("%s: GTT full, evicting something\n", __func__); | |
2511 | #endif | |
0108a3ed | 2512 | ret = i915_gem_evict_something(dev, obj->size, alignment); |
9731129c | 2513 | if (ret) |
673a394b | 2514 | return ret; |
9731129c | 2515 | |
673a394b EA |
2516 | goto search_free; |
2517 | } | |
2518 | ||
2519 | #if WATCH_BUF | |
cfd43c02 | 2520 | DRM_INFO("Binding object of size %zd at 0x%08x\n", |
673a394b EA |
2521 | obj->size, obj_priv->gtt_offset); |
2522 | #endif | |
4bdadb97 | 2523 | ret = i915_gem_object_get_pages(obj, gfpmask); |
673a394b EA |
2524 | if (ret) { |
2525 | drm_mm_put_block(obj_priv->gtt_space); | |
2526 | obj_priv->gtt_space = NULL; | |
07f73f69 CW |
2527 | |
2528 | if (ret == -ENOMEM) { | |
2529 | /* first try to clear up some space from the GTT */ | |
0108a3ed DV |
2530 | ret = i915_gem_evict_something(dev, obj->size, |
2531 | alignment); | |
07f73f69 | 2532 | if (ret) { |
07f73f69 | 2533 | /* now try to shrink everyone else */ |
4bdadb97 CW |
2534 | if (gfpmask) { |
2535 | gfpmask = 0; | |
2536 | goto search_free; | |
07f73f69 CW |
2537 | } |
2538 | ||
2539 | return ret; | |
2540 | } | |
2541 | ||
2542 | goto search_free; | |
2543 | } | |
2544 | ||
673a394b EA |
2545 | return ret; |
2546 | } | |
2547 | ||
673a394b EA |
2548 | /* Create an AGP memory structure pointing at our pages, and bind it |
2549 | * into the GTT. | |
2550 | */ | |
2551 | obj_priv->agp_mem = drm_agp_bind_pages(dev, | |
856fa198 | 2552 | obj_priv->pages, |
07f73f69 | 2553 | obj->size >> PAGE_SHIFT, |
ba1eb1d8 KP |
2554 | obj_priv->gtt_offset, |
2555 | obj_priv->agp_type); | |
673a394b | 2556 | if (obj_priv->agp_mem == NULL) { |
856fa198 | 2557 | i915_gem_object_put_pages(obj); |
673a394b EA |
2558 | drm_mm_put_block(obj_priv->gtt_space); |
2559 | obj_priv->gtt_space = NULL; | |
07f73f69 | 2560 | |
0108a3ed | 2561 | ret = i915_gem_evict_something(dev, obj->size, alignment); |
9731129c | 2562 | if (ret) |
07f73f69 | 2563 | return ret; |
07f73f69 CW |
2564 | |
2565 | goto search_free; | |
673a394b EA |
2566 | } |
2567 | atomic_inc(&dev->gtt_count); | |
2568 | atomic_add(obj->size, &dev->gtt_memory); | |
2569 | ||
bf1a1092 CW |
2570 | /* keep track of bounds object by adding it to the inactive list */ |
2571 | list_add_tail(&obj_priv->list, &dev_priv->mm.inactive_list); | |
2572 | ||
673a394b EA |
2573 | /* Assert that the object is not currently in any GPU domain. As it |
2574 | * wasn't in the GTT, there shouldn't be any way it could have been in | |
2575 | * a GPU cache | |
2576 | */ | |
21d509e3 CW |
2577 | BUG_ON(obj->read_domains & I915_GEM_GPU_DOMAINS); |
2578 | BUG_ON(obj->write_domain & I915_GEM_GPU_DOMAINS); | |
673a394b | 2579 | |
1c5d22f7 CW |
2580 | trace_i915_gem_object_bind(obj, obj_priv->gtt_offset); |
2581 | ||
673a394b EA |
2582 | return 0; |
2583 | } | |
2584 | ||
2585 | void | |
2586 | i915_gem_clflush_object(struct drm_gem_object *obj) | |
2587 | { | |
23010e43 | 2588 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
2589 | |
2590 | /* If we don't have a page list set up, then we're not pinned | |
2591 | * to GPU, and we can ignore the cache flush because it'll happen | |
2592 | * again at bind time. | |
2593 | */ | |
856fa198 | 2594 | if (obj_priv->pages == NULL) |
673a394b EA |
2595 | return; |
2596 | ||
1c5d22f7 | 2597 | trace_i915_gem_object_clflush(obj); |
cfa16a0d | 2598 | |
856fa198 | 2599 | drm_clflush_pages(obj_priv->pages, obj->size / PAGE_SIZE); |
673a394b EA |
2600 | } |
2601 | ||
e47c68e9 | 2602 | /** Flushes any GPU write domain for the object if it's dirty. */ |
2dafb1e0 | 2603 | static int |
e47c68e9 EA |
2604 | i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj) |
2605 | { | |
2606 | struct drm_device *dev = obj->dev; | |
1c5d22f7 | 2607 | uint32_t old_write_domain; |
852835f3 | 2608 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
e47c68e9 EA |
2609 | |
2610 | if ((obj->write_domain & I915_GEM_GPU_DOMAINS) == 0) | |
2dafb1e0 | 2611 | return 0; |
e47c68e9 EA |
2612 | |
2613 | /* Queue the GPU write cache flushing we need. */ | |
1c5d22f7 | 2614 | old_write_domain = obj->write_domain; |
e47c68e9 | 2615 | i915_gem_flush(dev, 0, obj->write_domain); |
2dafb1e0 CW |
2616 | if (i915_add_request(dev, NULL, obj->write_domain, obj_priv->ring) == 0) |
2617 | return -ENOMEM; | |
1c5d22f7 CW |
2618 | |
2619 | trace_i915_gem_object_change_domain(obj, | |
2620 | obj->read_domains, | |
2621 | old_write_domain); | |
2dafb1e0 | 2622 | return 0; |
e47c68e9 EA |
2623 | } |
2624 | ||
2625 | /** Flushes the GTT write domain for the object if it's dirty. */ | |
2626 | static void | |
2627 | i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj) | |
2628 | { | |
1c5d22f7 CW |
2629 | uint32_t old_write_domain; |
2630 | ||
e47c68e9 EA |
2631 | if (obj->write_domain != I915_GEM_DOMAIN_GTT) |
2632 | return; | |
2633 | ||
2634 | /* No actual flushing is required for the GTT write domain. Writes | |
2635 | * to it immediately go to main memory as far as we know, so there's | |
2636 | * no chipset flush. It also doesn't land in render cache. | |
2637 | */ | |
1c5d22f7 | 2638 | old_write_domain = obj->write_domain; |
e47c68e9 | 2639 | obj->write_domain = 0; |
1c5d22f7 CW |
2640 | |
2641 | trace_i915_gem_object_change_domain(obj, | |
2642 | obj->read_domains, | |
2643 | old_write_domain); | |
e47c68e9 EA |
2644 | } |
2645 | ||
2646 | /** Flushes the CPU write domain for the object if it's dirty. */ | |
2647 | static void | |
2648 | i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj) | |
2649 | { | |
2650 | struct drm_device *dev = obj->dev; | |
1c5d22f7 | 2651 | uint32_t old_write_domain; |
e47c68e9 EA |
2652 | |
2653 | if (obj->write_domain != I915_GEM_DOMAIN_CPU) | |
2654 | return; | |
2655 | ||
2656 | i915_gem_clflush_object(obj); | |
2657 | drm_agp_chipset_flush(dev); | |
1c5d22f7 | 2658 | old_write_domain = obj->write_domain; |
e47c68e9 | 2659 | obj->write_domain = 0; |
1c5d22f7 CW |
2660 | |
2661 | trace_i915_gem_object_change_domain(obj, | |
2662 | obj->read_domains, | |
2663 | old_write_domain); | |
e47c68e9 EA |
2664 | } |
2665 | ||
2dafb1e0 | 2666 | int |
6b95a207 KH |
2667 | i915_gem_object_flush_write_domain(struct drm_gem_object *obj) |
2668 | { | |
2dafb1e0 CW |
2669 | int ret = 0; |
2670 | ||
6b95a207 KH |
2671 | switch (obj->write_domain) { |
2672 | case I915_GEM_DOMAIN_GTT: | |
2673 | i915_gem_object_flush_gtt_write_domain(obj); | |
2674 | break; | |
2675 | case I915_GEM_DOMAIN_CPU: | |
2676 | i915_gem_object_flush_cpu_write_domain(obj); | |
2677 | break; | |
2678 | default: | |
2dafb1e0 | 2679 | ret = i915_gem_object_flush_gpu_write_domain(obj); |
6b95a207 KH |
2680 | break; |
2681 | } | |
2dafb1e0 CW |
2682 | |
2683 | return ret; | |
6b95a207 KH |
2684 | } |
2685 | ||
2ef7eeaa EA |
2686 | /** |
2687 | * Moves a single object to the GTT read, and possibly write domain. | |
2688 | * | |
2689 | * This function returns when the move is complete, including waiting on | |
2690 | * flushes to occur. | |
2691 | */ | |
79e53945 | 2692 | int |
2ef7eeaa EA |
2693 | i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj, int write) |
2694 | { | |
23010e43 | 2695 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
1c5d22f7 | 2696 | uint32_t old_write_domain, old_read_domains; |
e47c68e9 | 2697 | int ret; |
2ef7eeaa | 2698 | |
02354392 EA |
2699 | /* Not valid to be called on unbound objects. */ |
2700 | if (obj_priv->gtt_space == NULL) | |
2701 | return -EINVAL; | |
2702 | ||
2dafb1e0 CW |
2703 | ret = i915_gem_object_flush_gpu_write_domain(obj); |
2704 | if (ret != 0) | |
2705 | return ret; | |
2706 | ||
e47c68e9 EA |
2707 | /* Wait on any GPU rendering and flushing to occur. */ |
2708 | ret = i915_gem_object_wait_rendering(obj); | |
2709 | if (ret != 0) | |
2710 | return ret; | |
2711 | ||
1c5d22f7 CW |
2712 | old_write_domain = obj->write_domain; |
2713 | old_read_domains = obj->read_domains; | |
2714 | ||
e47c68e9 EA |
2715 | /* If we're writing through the GTT domain, then CPU and GPU caches |
2716 | * will need to be invalidated at next use. | |
2ef7eeaa | 2717 | */ |
e47c68e9 EA |
2718 | if (write) |
2719 | obj->read_domains &= I915_GEM_DOMAIN_GTT; | |
2ef7eeaa | 2720 | |
e47c68e9 | 2721 | i915_gem_object_flush_cpu_write_domain(obj); |
2ef7eeaa | 2722 | |
e47c68e9 EA |
2723 | /* It should now be out of any other write domains, and we can update |
2724 | * the domain values for our changes. | |
2725 | */ | |
2726 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_GTT) != 0); | |
2727 | obj->read_domains |= I915_GEM_DOMAIN_GTT; | |
2728 | if (write) { | |
2729 | obj->write_domain = I915_GEM_DOMAIN_GTT; | |
2730 | obj_priv->dirty = 1; | |
2ef7eeaa EA |
2731 | } |
2732 | ||
1c5d22f7 CW |
2733 | trace_i915_gem_object_change_domain(obj, |
2734 | old_read_domains, | |
2735 | old_write_domain); | |
2736 | ||
e47c68e9 EA |
2737 | return 0; |
2738 | } | |
2739 | ||
b9241ea3 ZW |
2740 | /* |
2741 | * Prepare buffer for display plane. Use uninterruptible for possible flush | |
2742 | * wait, as in modesetting process we're not supposed to be interrupted. | |
2743 | */ | |
2744 | int | |
2745 | i915_gem_object_set_to_display_plane(struct drm_gem_object *obj) | |
2746 | { | |
2747 | struct drm_device *dev = obj->dev; | |
23010e43 | 2748 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
b9241ea3 ZW |
2749 | uint32_t old_write_domain, old_read_domains; |
2750 | int ret; | |
2751 | ||
2752 | /* Not valid to be called on unbound objects. */ | |
2753 | if (obj_priv->gtt_space == NULL) | |
2754 | return -EINVAL; | |
2755 | ||
2dafb1e0 CW |
2756 | ret = i915_gem_object_flush_gpu_write_domain(obj); |
2757 | if (ret) | |
2758 | return ret; | |
b9241ea3 ZW |
2759 | |
2760 | /* Wait on any GPU rendering and flushing to occur. */ | |
2761 | if (obj_priv->active) { | |
2762 | #if WATCH_BUF | |
2763 | DRM_INFO("%s: object %p wait for seqno %08x\n", | |
2764 | __func__, obj, obj_priv->last_rendering_seqno); | |
2765 | #endif | |
852835f3 ZN |
2766 | ret = i915_do_wait_request(dev, |
2767 | obj_priv->last_rendering_seqno, | |
2768 | 0, | |
2769 | obj_priv->ring); | |
b9241ea3 ZW |
2770 | if (ret != 0) |
2771 | return ret; | |
2772 | } | |
2773 | ||
b118c1e3 CW |
2774 | i915_gem_object_flush_cpu_write_domain(obj); |
2775 | ||
b9241ea3 ZW |
2776 | old_write_domain = obj->write_domain; |
2777 | old_read_domains = obj->read_domains; | |
2778 | ||
b9241ea3 ZW |
2779 | /* It should now be out of any other write domains, and we can update |
2780 | * the domain values for our changes. | |
2781 | */ | |
2782 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_GTT) != 0); | |
b118c1e3 | 2783 | obj->read_domains = I915_GEM_DOMAIN_GTT; |
b9241ea3 ZW |
2784 | obj->write_domain = I915_GEM_DOMAIN_GTT; |
2785 | obj_priv->dirty = 1; | |
2786 | ||
2787 | trace_i915_gem_object_change_domain(obj, | |
2788 | old_read_domains, | |
2789 | old_write_domain); | |
2790 | ||
2791 | return 0; | |
2792 | } | |
2793 | ||
e47c68e9 EA |
2794 | /** |
2795 | * Moves a single object to the CPU read, and possibly write domain. | |
2796 | * | |
2797 | * This function returns when the move is complete, including waiting on | |
2798 | * flushes to occur. | |
2799 | */ | |
2800 | static int | |
2801 | i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, int write) | |
2802 | { | |
1c5d22f7 | 2803 | uint32_t old_write_domain, old_read_domains; |
e47c68e9 EA |
2804 | int ret; |
2805 | ||
2dafb1e0 CW |
2806 | ret = i915_gem_object_flush_gpu_write_domain(obj); |
2807 | if (ret) | |
2808 | return ret; | |
2809 | ||
2ef7eeaa | 2810 | /* Wait on any GPU rendering and flushing to occur. */ |
e47c68e9 EA |
2811 | ret = i915_gem_object_wait_rendering(obj); |
2812 | if (ret != 0) | |
2813 | return ret; | |
2ef7eeaa | 2814 | |
e47c68e9 | 2815 | i915_gem_object_flush_gtt_write_domain(obj); |
2ef7eeaa | 2816 | |
e47c68e9 EA |
2817 | /* If we have a partially-valid cache of the object in the CPU, |
2818 | * finish invalidating it and free the per-page flags. | |
2ef7eeaa | 2819 | */ |
e47c68e9 | 2820 | i915_gem_object_set_to_full_cpu_read_domain(obj); |
2ef7eeaa | 2821 | |
1c5d22f7 CW |
2822 | old_write_domain = obj->write_domain; |
2823 | old_read_domains = obj->read_domains; | |
2824 | ||
e47c68e9 EA |
2825 | /* Flush the CPU cache if it's still invalid. */ |
2826 | if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) { | |
2ef7eeaa | 2827 | i915_gem_clflush_object(obj); |
2ef7eeaa | 2828 | |
e47c68e9 | 2829 | obj->read_domains |= I915_GEM_DOMAIN_CPU; |
2ef7eeaa EA |
2830 | } |
2831 | ||
2832 | /* It should now be out of any other write domains, and we can update | |
2833 | * the domain values for our changes. | |
2834 | */ | |
e47c68e9 EA |
2835 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0); |
2836 | ||
2837 | /* If we're writing through the CPU, then the GPU read domains will | |
2838 | * need to be invalidated at next use. | |
2839 | */ | |
2840 | if (write) { | |
2841 | obj->read_domains &= I915_GEM_DOMAIN_CPU; | |
2842 | obj->write_domain = I915_GEM_DOMAIN_CPU; | |
2843 | } | |
2ef7eeaa | 2844 | |
1c5d22f7 CW |
2845 | trace_i915_gem_object_change_domain(obj, |
2846 | old_read_domains, | |
2847 | old_write_domain); | |
2848 | ||
2ef7eeaa EA |
2849 | return 0; |
2850 | } | |
2851 | ||
673a394b EA |
2852 | /* |
2853 | * Set the next domain for the specified object. This | |
2854 | * may not actually perform the necessary flushing/invaliding though, | |
2855 | * as that may want to be batched with other set_domain operations | |
2856 | * | |
2857 | * This is (we hope) the only really tricky part of gem. The goal | |
2858 | * is fairly simple -- track which caches hold bits of the object | |
2859 | * and make sure they remain coherent. A few concrete examples may | |
2860 | * help to explain how it works. For shorthand, we use the notation | |
2861 | * (read_domains, write_domain), e.g. (CPU, CPU) to indicate the | |
2862 | * a pair of read and write domain masks. | |
2863 | * | |
2864 | * Case 1: the batch buffer | |
2865 | * | |
2866 | * 1. Allocated | |
2867 | * 2. Written by CPU | |
2868 | * 3. Mapped to GTT | |
2869 | * 4. Read by GPU | |
2870 | * 5. Unmapped from GTT | |
2871 | * 6. Freed | |
2872 | * | |
2873 | * Let's take these a step at a time | |
2874 | * | |
2875 | * 1. Allocated | |
2876 | * Pages allocated from the kernel may still have | |
2877 | * cache contents, so we set them to (CPU, CPU) always. | |
2878 | * 2. Written by CPU (using pwrite) | |
2879 | * The pwrite function calls set_domain (CPU, CPU) and | |
2880 | * this function does nothing (as nothing changes) | |
2881 | * 3. Mapped by GTT | |
2882 | * This function asserts that the object is not | |
2883 | * currently in any GPU-based read or write domains | |
2884 | * 4. Read by GPU | |
2885 | * i915_gem_execbuffer calls set_domain (COMMAND, 0). | |
2886 | * As write_domain is zero, this function adds in the | |
2887 | * current read domains (CPU+COMMAND, 0). | |
2888 | * flush_domains is set to CPU. | |
2889 | * invalidate_domains is set to COMMAND | |
2890 | * clflush is run to get data out of the CPU caches | |
2891 | * then i915_dev_set_domain calls i915_gem_flush to | |
2892 | * emit an MI_FLUSH and drm_agp_chipset_flush | |
2893 | * 5. Unmapped from GTT | |
2894 | * i915_gem_object_unbind calls set_domain (CPU, CPU) | |
2895 | * flush_domains and invalidate_domains end up both zero | |
2896 | * so no flushing/invalidating happens | |
2897 | * 6. Freed | |
2898 | * yay, done | |
2899 | * | |
2900 | * Case 2: The shared render buffer | |
2901 | * | |
2902 | * 1. Allocated | |
2903 | * 2. Mapped to GTT | |
2904 | * 3. Read/written by GPU | |
2905 | * 4. set_domain to (CPU,CPU) | |
2906 | * 5. Read/written by CPU | |
2907 | * 6. Read/written by GPU | |
2908 | * | |
2909 | * 1. Allocated | |
2910 | * Same as last example, (CPU, CPU) | |
2911 | * 2. Mapped to GTT | |
2912 | * Nothing changes (assertions find that it is not in the GPU) | |
2913 | * 3. Read/written by GPU | |
2914 | * execbuffer calls set_domain (RENDER, RENDER) | |
2915 | * flush_domains gets CPU | |
2916 | * invalidate_domains gets GPU | |
2917 | * clflush (obj) | |
2918 | * MI_FLUSH and drm_agp_chipset_flush | |
2919 | * 4. set_domain (CPU, CPU) | |
2920 | * flush_domains gets GPU | |
2921 | * invalidate_domains gets CPU | |
2922 | * wait_rendering (obj) to make sure all drawing is complete. | |
2923 | * This will include an MI_FLUSH to get the data from GPU | |
2924 | * to memory | |
2925 | * clflush (obj) to invalidate the CPU cache | |
2926 | * Another MI_FLUSH in i915_gem_flush (eliminate this somehow?) | |
2927 | * 5. Read/written by CPU | |
2928 | * cache lines are loaded and dirtied | |
2929 | * 6. Read written by GPU | |
2930 | * Same as last GPU access | |
2931 | * | |
2932 | * Case 3: The constant buffer | |
2933 | * | |
2934 | * 1. Allocated | |
2935 | * 2. Written by CPU | |
2936 | * 3. Read by GPU | |
2937 | * 4. Updated (written) by CPU again | |
2938 | * 5. Read by GPU | |
2939 | * | |
2940 | * 1. Allocated | |
2941 | * (CPU, CPU) | |
2942 | * 2. Written by CPU | |
2943 | * (CPU, CPU) | |
2944 | * 3. Read by GPU | |
2945 | * (CPU+RENDER, 0) | |
2946 | * flush_domains = CPU | |
2947 | * invalidate_domains = RENDER | |
2948 | * clflush (obj) | |
2949 | * MI_FLUSH | |
2950 | * drm_agp_chipset_flush | |
2951 | * 4. Updated (written) by CPU again | |
2952 | * (CPU, CPU) | |
2953 | * flush_domains = 0 (no previous write domain) | |
2954 | * invalidate_domains = 0 (no new read domains) | |
2955 | * 5. Read by GPU | |
2956 | * (CPU+RENDER, 0) | |
2957 | * flush_domains = CPU | |
2958 | * invalidate_domains = RENDER | |
2959 | * clflush (obj) | |
2960 | * MI_FLUSH | |
2961 | * drm_agp_chipset_flush | |
2962 | */ | |
c0d90829 | 2963 | static void |
8b0e378a | 2964 | i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj) |
673a394b EA |
2965 | { |
2966 | struct drm_device *dev = obj->dev; | |
88f356b7 | 2967 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 2968 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
2969 | uint32_t invalidate_domains = 0; |
2970 | uint32_t flush_domains = 0; | |
1c5d22f7 | 2971 | uint32_t old_read_domains; |
e47c68e9 | 2972 | |
8b0e378a EA |
2973 | BUG_ON(obj->pending_read_domains & I915_GEM_DOMAIN_CPU); |
2974 | BUG_ON(obj->pending_write_domain == I915_GEM_DOMAIN_CPU); | |
673a394b | 2975 | |
652c393a JB |
2976 | intel_mark_busy(dev, obj); |
2977 | ||
673a394b EA |
2978 | #if WATCH_BUF |
2979 | DRM_INFO("%s: object %p read %08x -> %08x write %08x -> %08x\n", | |
2980 | __func__, obj, | |
8b0e378a EA |
2981 | obj->read_domains, obj->pending_read_domains, |
2982 | obj->write_domain, obj->pending_write_domain); | |
673a394b EA |
2983 | #endif |
2984 | /* | |
2985 | * If the object isn't moving to a new write domain, | |
2986 | * let the object stay in multiple read domains | |
2987 | */ | |
8b0e378a EA |
2988 | if (obj->pending_write_domain == 0) |
2989 | obj->pending_read_domains |= obj->read_domains; | |
673a394b EA |
2990 | else |
2991 | obj_priv->dirty = 1; | |
2992 | ||
2993 | /* | |
2994 | * Flush the current write domain if | |
2995 | * the new read domains don't match. Invalidate | |
2996 | * any read domains which differ from the old | |
2997 | * write domain | |
2998 | */ | |
8b0e378a EA |
2999 | if (obj->write_domain && |
3000 | obj->write_domain != obj->pending_read_domains) { | |
673a394b | 3001 | flush_domains |= obj->write_domain; |
8b0e378a EA |
3002 | invalidate_domains |= |
3003 | obj->pending_read_domains & ~obj->write_domain; | |
673a394b EA |
3004 | } |
3005 | /* | |
3006 | * Invalidate any read caches which may have | |
3007 | * stale data. That is, any new read domains. | |
3008 | */ | |
8b0e378a | 3009 | invalidate_domains |= obj->pending_read_domains & ~obj->read_domains; |
673a394b EA |
3010 | if ((flush_domains | invalidate_domains) & I915_GEM_DOMAIN_CPU) { |
3011 | #if WATCH_BUF | |
3012 | DRM_INFO("%s: CPU domain flush %08x invalidate %08x\n", | |
3013 | __func__, flush_domains, invalidate_domains); | |
3014 | #endif | |
673a394b EA |
3015 | i915_gem_clflush_object(obj); |
3016 | } | |
3017 | ||
1c5d22f7 CW |
3018 | old_read_domains = obj->read_domains; |
3019 | ||
efbeed96 EA |
3020 | /* The actual obj->write_domain will be updated with |
3021 | * pending_write_domain after we emit the accumulated flush for all | |
3022 | * of our domain changes in execbuffers (which clears objects' | |
3023 | * write_domains). So if we have a current write domain that we | |
3024 | * aren't changing, set pending_write_domain to that. | |
3025 | */ | |
3026 | if (flush_domains == 0 && obj->pending_write_domain == 0) | |
3027 | obj->pending_write_domain = obj->write_domain; | |
8b0e378a | 3028 | obj->read_domains = obj->pending_read_domains; |
673a394b | 3029 | |
88f356b7 CW |
3030 | if (flush_domains & I915_GEM_GPU_DOMAINS) { |
3031 | if (obj_priv->ring == &dev_priv->render_ring) | |
3032 | dev_priv->flush_rings |= FLUSH_RENDER_RING; | |
3033 | else if (obj_priv->ring == &dev_priv->bsd_ring) | |
3034 | dev_priv->flush_rings |= FLUSH_BSD_RING; | |
3035 | } | |
3036 | ||
673a394b EA |
3037 | dev->invalidate_domains |= invalidate_domains; |
3038 | dev->flush_domains |= flush_domains; | |
3039 | #if WATCH_BUF | |
3040 | DRM_INFO("%s: read %08x write %08x invalidate %08x flush %08x\n", | |
3041 | __func__, | |
3042 | obj->read_domains, obj->write_domain, | |
3043 | dev->invalidate_domains, dev->flush_domains); | |
3044 | #endif | |
1c5d22f7 CW |
3045 | |
3046 | trace_i915_gem_object_change_domain(obj, | |
3047 | old_read_domains, | |
3048 | obj->write_domain); | |
673a394b EA |
3049 | } |
3050 | ||
3051 | /** | |
e47c68e9 | 3052 | * Moves the object from a partially CPU read to a full one. |
673a394b | 3053 | * |
e47c68e9 EA |
3054 | * Note that this only resolves i915_gem_object_set_cpu_read_domain_range(), |
3055 | * and doesn't handle transitioning from !(read_domains & I915_GEM_DOMAIN_CPU). | |
673a394b | 3056 | */ |
e47c68e9 EA |
3057 | static void |
3058 | i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj) | |
673a394b | 3059 | { |
23010e43 | 3060 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b | 3061 | |
e47c68e9 EA |
3062 | if (!obj_priv->page_cpu_valid) |
3063 | return; | |
3064 | ||
3065 | /* If we're partially in the CPU read domain, finish moving it in. | |
3066 | */ | |
3067 | if (obj->read_domains & I915_GEM_DOMAIN_CPU) { | |
3068 | int i; | |
3069 | ||
3070 | for (i = 0; i <= (obj->size - 1) / PAGE_SIZE; i++) { | |
3071 | if (obj_priv->page_cpu_valid[i]) | |
3072 | continue; | |
856fa198 | 3073 | drm_clflush_pages(obj_priv->pages + i, 1); |
e47c68e9 | 3074 | } |
e47c68e9 EA |
3075 | } |
3076 | ||
3077 | /* Free the page_cpu_valid mappings which are now stale, whether | |
3078 | * or not we've got I915_GEM_DOMAIN_CPU. | |
3079 | */ | |
9a298b2a | 3080 | kfree(obj_priv->page_cpu_valid); |
e47c68e9 EA |
3081 | obj_priv->page_cpu_valid = NULL; |
3082 | } | |
3083 | ||
3084 | /** | |
3085 | * Set the CPU read domain on a range of the object. | |
3086 | * | |
3087 | * The object ends up with I915_GEM_DOMAIN_CPU in its read flags although it's | |
3088 | * not entirely valid. The page_cpu_valid member of the object flags which | |
3089 | * pages have been flushed, and will be respected by | |
3090 | * i915_gem_object_set_to_cpu_domain() if it's called on to get a valid mapping | |
3091 | * of the whole object. | |
3092 | * | |
3093 | * This function returns when the move is complete, including waiting on | |
3094 | * flushes to occur. | |
3095 | */ | |
3096 | static int | |
3097 | i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj, | |
3098 | uint64_t offset, uint64_t size) | |
3099 | { | |
23010e43 | 3100 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
1c5d22f7 | 3101 | uint32_t old_read_domains; |
e47c68e9 | 3102 | int i, ret; |
673a394b | 3103 | |
e47c68e9 EA |
3104 | if (offset == 0 && size == obj->size) |
3105 | return i915_gem_object_set_to_cpu_domain(obj, 0); | |
673a394b | 3106 | |
2dafb1e0 CW |
3107 | ret = i915_gem_object_flush_gpu_write_domain(obj); |
3108 | if (ret) | |
3109 | return ret; | |
3110 | ||
e47c68e9 | 3111 | /* Wait on any GPU rendering and flushing to occur. */ |
6a47baa6 | 3112 | ret = i915_gem_object_wait_rendering(obj); |
e47c68e9 | 3113 | if (ret != 0) |
6a47baa6 | 3114 | return ret; |
e47c68e9 EA |
3115 | i915_gem_object_flush_gtt_write_domain(obj); |
3116 | ||
3117 | /* If we're already fully in the CPU read domain, we're done. */ | |
3118 | if (obj_priv->page_cpu_valid == NULL && | |
3119 | (obj->read_domains & I915_GEM_DOMAIN_CPU) != 0) | |
3120 | return 0; | |
673a394b | 3121 | |
e47c68e9 EA |
3122 | /* Otherwise, create/clear the per-page CPU read domain flag if we're |
3123 | * newly adding I915_GEM_DOMAIN_CPU | |
3124 | */ | |
673a394b | 3125 | if (obj_priv->page_cpu_valid == NULL) { |
9a298b2a EA |
3126 | obj_priv->page_cpu_valid = kzalloc(obj->size / PAGE_SIZE, |
3127 | GFP_KERNEL); | |
e47c68e9 EA |
3128 | if (obj_priv->page_cpu_valid == NULL) |
3129 | return -ENOMEM; | |
3130 | } else if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) | |
3131 | memset(obj_priv->page_cpu_valid, 0, obj->size / PAGE_SIZE); | |
673a394b EA |
3132 | |
3133 | /* Flush the cache on any pages that are still invalid from the CPU's | |
3134 | * perspective. | |
3135 | */ | |
e47c68e9 EA |
3136 | for (i = offset / PAGE_SIZE; i <= (offset + size - 1) / PAGE_SIZE; |
3137 | i++) { | |
673a394b EA |
3138 | if (obj_priv->page_cpu_valid[i]) |
3139 | continue; | |
3140 | ||
856fa198 | 3141 | drm_clflush_pages(obj_priv->pages + i, 1); |
673a394b EA |
3142 | |
3143 | obj_priv->page_cpu_valid[i] = 1; | |
3144 | } | |
3145 | ||
e47c68e9 EA |
3146 | /* It should now be out of any other write domains, and we can update |
3147 | * the domain values for our changes. | |
3148 | */ | |
3149 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0); | |
3150 | ||
1c5d22f7 | 3151 | old_read_domains = obj->read_domains; |
e47c68e9 EA |
3152 | obj->read_domains |= I915_GEM_DOMAIN_CPU; |
3153 | ||
1c5d22f7 CW |
3154 | trace_i915_gem_object_change_domain(obj, |
3155 | old_read_domains, | |
3156 | obj->write_domain); | |
3157 | ||
673a394b EA |
3158 | return 0; |
3159 | } | |
3160 | ||
673a394b EA |
3161 | /** |
3162 | * Pin an object to the GTT and evaluate the relocations landing in it. | |
3163 | */ | |
3164 | static int | |
3165 | i915_gem_object_pin_and_relocate(struct drm_gem_object *obj, | |
3166 | struct drm_file *file_priv, | |
76446cac | 3167 | struct drm_i915_gem_exec_object2 *entry, |
40a5f0de | 3168 | struct drm_i915_gem_relocation_entry *relocs) |
673a394b EA |
3169 | { |
3170 | struct drm_device *dev = obj->dev; | |
0839ccb8 | 3171 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 3172 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b | 3173 | int i, ret; |
0839ccb8 | 3174 | void __iomem *reloc_page; |
76446cac JB |
3175 | bool need_fence; |
3176 | ||
3177 | need_fence = entry->flags & EXEC_OBJECT_NEEDS_FENCE && | |
3178 | obj_priv->tiling_mode != I915_TILING_NONE; | |
3179 | ||
3180 | /* Check fence reg constraints and rebind if necessary */ | |
808b24d6 CW |
3181 | if (need_fence && |
3182 | !i915_gem_object_fence_offset_ok(obj, | |
3183 | obj_priv->tiling_mode)) { | |
3184 | ret = i915_gem_object_unbind(obj); | |
3185 | if (ret) | |
3186 | return ret; | |
3187 | } | |
673a394b EA |
3188 | |
3189 | /* Choose the GTT offset for our buffer and put it there. */ | |
3190 | ret = i915_gem_object_pin(obj, (uint32_t) entry->alignment); | |
3191 | if (ret) | |
3192 | return ret; | |
3193 | ||
76446cac JB |
3194 | /* |
3195 | * Pre-965 chips need a fence register set up in order to | |
3196 | * properly handle blits to/from tiled surfaces. | |
3197 | */ | |
3198 | if (need_fence) { | |
3199 | ret = i915_gem_object_get_fence_reg(obj); | |
3200 | if (ret != 0) { | |
76446cac JB |
3201 | i915_gem_object_unpin(obj); |
3202 | return ret; | |
3203 | } | |
3204 | } | |
3205 | ||
673a394b EA |
3206 | entry->offset = obj_priv->gtt_offset; |
3207 | ||
673a394b EA |
3208 | /* Apply the relocations, using the GTT aperture to avoid cache |
3209 | * flushing requirements. | |
3210 | */ | |
3211 | for (i = 0; i < entry->relocation_count; i++) { | |
40a5f0de | 3212 | struct drm_i915_gem_relocation_entry *reloc= &relocs[i]; |
673a394b EA |
3213 | struct drm_gem_object *target_obj; |
3214 | struct drm_i915_gem_object *target_obj_priv; | |
3043c60c EA |
3215 | uint32_t reloc_val, reloc_offset; |
3216 | uint32_t __iomem *reloc_entry; | |
673a394b | 3217 | |
673a394b | 3218 | target_obj = drm_gem_object_lookup(obj->dev, file_priv, |
40a5f0de | 3219 | reloc->target_handle); |
673a394b EA |
3220 | if (target_obj == NULL) { |
3221 | i915_gem_object_unpin(obj); | |
bf79cb91 | 3222 | return -ENOENT; |
673a394b | 3223 | } |
23010e43 | 3224 | target_obj_priv = to_intel_bo(target_obj); |
673a394b | 3225 | |
8542a0bb CW |
3226 | #if WATCH_RELOC |
3227 | DRM_INFO("%s: obj %p offset %08x target %d " | |
3228 | "read %08x write %08x gtt %08x " | |
3229 | "presumed %08x delta %08x\n", | |
3230 | __func__, | |
3231 | obj, | |
3232 | (int) reloc->offset, | |
3233 | (int) reloc->target_handle, | |
3234 | (int) reloc->read_domains, | |
3235 | (int) reloc->write_domain, | |
3236 | (int) target_obj_priv->gtt_offset, | |
3237 | (int) reloc->presumed_offset, | |
3238 | reloc->delta); | |
3239 | #endif | |
3240 | ||
673a394b EA |
3241 | /* The target buffer should have appeared before us in the |
3242 | * exec_object list, so it should have a GTT space bound by now. | |
3243 | */ | |
3244 | if (target_obj_priv->gtt_space == NULL) { | |
3245 | DRM_ERROR("No GTT space found for object %d\n", | |
40a5f0de | 3246 | reloc->target_handle); |
673a394b EA |
3247 | drm_gem_object_unreference(target_obj); |
3248 | i915_gem_object_unpin(obj); | |
3249 | return -EINVAL; | |
3250 | } | |
3251 | ||
8542a0bb | 3252 | /* Validate that the target is in a valid r/w GPU domain */ |
16edd550 DV |
3253 | if (reloc->write_domain & (reloc->write_domain - 1)) { |
3254 | DRM_ERROR("reloc with multiple write domains: " | |
3255 | "obj %p target %d offset %d " | |
3256 | "read %08x write %08x", | |
3257 | obj, reloc->target_handle, | |
3258 | (int) reloc->offset, | |
3259 | reloc->read_domains, | |
3260 | reloc->write_domain); | |
3261 | return -EINVAL; | |
3262 | } | |
40a5f0de EA |
3263 | if (reloc->write_domain & I915_GEM_DOMAIN_CPU || |
3264 | reloc->read_domains & I915_GEM_DOMAIN_CPU) { | |
e47c68e9 EA |
3265 | DRM_ERROR("reloc with read/write CPU domains: " |
3266 | "obj %p target %d offset %d " | |
3267 | "read %08x write %08x", | |
40a5f0de EA |
3268 | obj, reloc->target_handle, |
3269 | (int) reloc->offset, | |
3270 | reloc->read_domains, | |
3271 | reloc->write_domain); | |
491152b8 CW |
3272 | drm_gem_object_unreference(target_obj); |
3273 | i915_gem_object_unpin(obj); | |
e47c68e9 EA |
3274 | return -EINVAL; |
3275 | } | |
40a5f0de EA |
3276 | if (reloc->write_domain && target_obj->pending_write_domain && |
3277 | reloc->write_domain != target_obj->pending_write_domain) { | |
673a394b EA |
3278 | DRM_ERROR("Write domain conflict: " |
3279 | "obj %p target %d offset %d " | |
3280 | "new %08x old %08x\n", | |
40a5f0de EA |
3281 | obj, reloc->target_handle, |
3282 | (int) reloc->offset, | |
3283 | reloc->write_domain, | |
673a394b EA |
3284 | target_obj->pending_write_domain); |
3285 | drm_gem_object_unreference(target_obj); | |
3286 | i915_gem_object_unpin(obj); | |
3287 | return -EINVAL; | |
3288 | } | |
3289 | ||
40a5f0de EA |
3290 | target_obj->pending_read_domains |= reloc->read_domains; |
3291 | target_obj->pending_write_domain |= reloc->write_domain; | |
673a394b EA |
3292 | |
3293 | /* If the relocation already has the right value in it, no | |
3294 | * more work needs to be done. | |
3295 | */ | |
40a5f0de | 3296 | if (target_obj_priv->gtt_offset == reloc->presumed_offset) { |
673a394b EA |
3297 | drm_gem_object_unreference(target_obj); |
3298 | continue; | |
3299 | } | |
3300 | ||
8542a0bb CW |
3301 | /* Check that the relocation address is valid... */ |
3302 | if (reloc->offset > obj->size - 4) { | |
3303 | DRM_ERROR("Relocation beyond object bounds: " | |
3304 | "obj %p target %d offset %d size %d.\n", | |
3305 | obj, reloc->target_handle, | |
3306 | (int) reloc->offset, (int) obj->size); | |
3307 | drm_gem_object_unreference(target_obj); | |
3308 | i915_gem_object_unpin(obj); | |
3309 | return -EINVAL; | |
3310 | } | |
3311 | if (reloc->offset & 3) { | |
3312 | DRM_ERROR("Relocation not 4-byte aligned: " | |
3313 | "obj %p target %d offset %d.\n", | |
3314 | obj, reloc->target_handle, | |
3315 | (int) reloc->offset); | |
3316 | drm_gem_object_unreference(target_obj); | |
3317 | i915_gem_object_unpin(obj); | |
3318 | return -EINVAL; | |
3319 | } | |
3320 | ||
3321 | /* and points to somewhere within the target object. */ | |
3322 | if (reloc->delta >= target_obj->size) { | |
3323 | DRM_ERROR("Relocation beyond target object bounds: " | |
3324 | "obj %p target %d delta %d size %d.\n", | |
3325 | obj, reloc->target_handle, | |
3326 | (int) reloc->delta, (int) target_obj->size); | |
3327 | drm_gem_object_unreference(target_obj); | |
3328 | i915_gem_object_unpin(obj); | |
3329 | return -EINVAL; | |
3330 | } | |
3331 | ||
2ef7eeaa EA |
3332 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); |
3333 | if (ret != 0) { | |
3334 | drm_gem_object_unreference(target_obj); | |
3335 | i915_gem_object_unpin(obj); | |
3336 | return -EINVAL; | |
673a394b EA |
3337 | } |
3338 | ||
3339 | /* Map the page containing the relocation we're going to | |
3340 | * perform. | |
3341 | */ | |
40a5f0de | 3342 | reloc_offset = obj_priv->gtt_offset + reloc->offset; |
0839ccb8 KP |
3343 | reloc_page = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping, |
3344 | (reloc_offset & | |
fca3ec01 CW |
3345 | ~(PAGE_SIZE - 1)), |
3346 | KM_USER0); | |
3043c60c | 3347 | reloc_entry = (uint32_t __iomem *)(reloc_page + |
0839ccb8 | 3348 | (reloc_offset & (PAGE_SIZE - 1))); |
40a5f0de | 3349 | reloc_val = target_obj_priv->gtt_offset + reloc->delta; |
673a394b EA |
3350 | |
3351 | #if WATCH_BUF | |
3352 | DRM_INFO("Applied relocation: %p@0x%08x %08x -> %08x\n", | |
40a5f0de | 3353 | obj, (unsigned int) reloc->offset, |
673a394b EA |
3354 | readl(reloc_entry), reloc_val); |
3355 | #endif | |
3356 | writel(reloc_val, reloc_entry); | |
fca3ec01 | 3357 | io_mapping_unmap_atomic(reloc_page, KM_USER0); |
673a394b | 3358 | |
40a5f0de EA |
3359 | /* The updated presumed offset for this entry will be |
3360 | * copied back out to the user. | |
673a394b | 3361 | */ |
40a5f0de | 3362 | reloc->presumed_offset = target_obj_priv->gtt_offset; |
673a394b EA |
3363 | |
3364 | drm_gem_object_unreference(target_obj); | |
3365 | } | |
3366 | ||
673a394b EA |
3367 | #if WATCH_BUF |
3368 | if (0) | |
3369 | i915_gem_dump_object(obj, 128, __func__, ~0); | |
3370 | #endif | |
3371 | return 0; | |
3372 | } | |
3373 | ||
673a394b EA |
3374 | /* Throttle our rendering by waiting until the ring has completed our requests |
3375 | * emitted over 20 msec ago. | |
3376 | * | |
b962442e EA |
3377 | * Note that if we were to use the current jiffies each time around the loop, |
3378 | * we wouldn't escape the function with any frames outstanding if the time to | |
3379 | * render a frame was over 20ms. | |
3380 | * | |
673a394b EA |
3381 | * This should get us reasonable parallelism between CPU and GPU but also |
3382 | * relatively low latency when blocking on a particular request to finish. | |
3383 | */ | |
3384 | static int | |
3385 | i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file_priv) | |
3386 | { | |
3387 | struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; | |
3388 | int ret = 0; | |
b962442e | 3389 | unsigned long recent_enough = jiffies - msecs_to_jiffies(20); |
673a394b EA |
3390 | |
3391 | mutex_lock(&dev->struct_mutex); | |
b962442e EA |
3392 | while (!list_empty(&i915_file_priv->mm.request_list)) { |
3393 | struct drm_i915_gem_request *request; | |
3394 | ||
3395 | request = list_first_entry(&i915_file_priv->mm.request_list, | |
3396 | struct drm_i915_gem_request, | |
3397 | client_list); | |
3398 | ||
3399 | if (time_after_eq(request->emitted_jiffies, recent_enough)) | |
3400 | break; | |
3401 | ||
852835f3 | 3402 | ret = i915_wait_request(dev, request->seqno, request->ring); |
b962442e EA |
3403 | if (ret != 0) |
3404 | break; | |
3405 | } | |
673a394b | 3406 | mutex_unlock(&dev->struct_mutex); |
b962442e | 3407 | |
673a394b EA |
3408 | return ret; |
3409 | } | |
3410 | ||
40a5f0de | 3411 | static int |
76446cac | 3412 | i915_gem_get_relocs_from_user(struct drm_i915_gem_exec_object2 *exec_list, |
40a5f0de EA |
3413 | uint32_t buffer_count, |
3414 | struct drm_i915_gem_relocation_entry **relocs) | |
3415 | { | |
3416 | uint32_t reloc_count = 0, reloc_index = 0, i; | |
3417 | int ret; | |
3418 | ||
3419 | *relocs = NULL; | |
3420 | for (i = 0; i < buffer_count; i++) { | |
3421 | if (reloc_count + exec_list[i].relocation_count < reloc_count) | |
3422 | return -EINVAL; | |
3423 | reloc_count += exec_list[i].relocation_count; | |
3424 | } | |
3425 | ||
8e7d2b2c | 3426 | *relocs = drm_calloc_large(reloc_count, sizeof(**relocs)); |
76446cac JB |
3427 | if (*relocs == NULL) { |
3428 | DRM_ERROR("failed to alloc relocs, count %d\n", reloc_count); | |
40a5f0de | 3429 | return -ENOMEM; |
76446cac | 3430 | } |
40a5f0de EA |
3431 | |
3432 | for (i = 0; i < buffer_count; i++) { | |
3433 | struct drm_i915_gem_relocation_entry __user *user_relocs; | |
3434 | ||
3435 | user_relocs = (void __user *)(uintptr_t)exec_list[i].relocs_ptr; | |
3436 | ||
3437 | ret = copy_from_user(&(*relocs)[reloc_index], | |
3438 | user_relocs, | |
3439 | exec_list[i].relocation_count * | |
3440 | sizeof(**relocs)); | |
3441 | if (ret != 0) { | |
8e7d2b2c | 3442 | drm_free_large(*relocs); |
40a5f0de | 3443 | *relocs = NULL; |
2bc43b5c | 3444 | return -EFAULT; |
40a5f0de EA |
3445 | } |
3446 | ||
3447 | reloc_index += exec_list[i].relocation_count; | |
3448 | } | |
3449 | ||
2bc43b5c | 3450 | return 0; |
40a5f0de EA |
3451 | } |
3452 | ||
3453 | static int | |
76446cac | 3454 | i915_gem_put_relocs_to_user(struct drm_i915_gem_exec_object2 *exec_list, |
40a5f0de EA |
3455 | uint32_t buffer_count, |
3456 | struct drm_i915_gem_relocation_entry *relocs) | |
3457 | { | |
3458 | uint32_t reloc_count = 0, i; | |
2bc43b5c | 3459 | int ret = 0; |
40a5f0de | 3460 | |
93533c29 CW |
3461 | if (relocs == NULL) |
3462 | return 0; | |
3463 | ||
40a5f0de EA |
3464 | for (i = 0; i < buffer_count; i++) { |
3465 | struct drm_i915_gem_relocation_entry __user *user_relocs; | |
2bc43b5c | 3466 | int unwritten; |
40a5f0de EA |
3467 | |
3468 | user_relocs = (void __user *)(uintptr_t)exec_list[i].relocs_ptr; | |
3469 | ||
2bc43b5c FM |
3470 | unwritten = copy_to_user(user_relocs, |
3471 | &relocs[reloc_count], | |
3472 | exec_list[i].relocation_count * | |
3473 | sizeof(*relocs)); | |
3474 | ||
3475 | if (unwritten) { | |
3476 | ret = -EFAULT; | |
3477 | goto err; | |
40a5f0de EA |
3478 | } |
3479 | ||
3480 | reloc_count += exec_list[i].relocation_count; | |
3481 | } | |
3482 | ||
2bc43b5c | 3483 | err: |
8e7d2b2c | 3484 | drm_free_large(relocs); |
40a5f0de EA |
3485 | |
3486 | return ret; | |
3487 | } | |
3488 | ||
83d60795 | 3489 | static int |
76446cac | 3490 | i915_gem_check_execbuffer (struct drm_i915_gem_execbuffer2 *exec, |
83d60795 CW |
3491 | uint64_t exec_offset) |
3492 | { | |
3493 | uint32_t exec_start, exec_len; | |
3494 | ||
3495 | exec_start = (uint32_t) exec_offset + exec->batch_start_offset; | |
3496 | exec_len = (uint32_t) exec->batch_len; | |
3497 | ||
3498 | if ((exec_start | exec_len) & 0x7) | |
3499 | return -EINVAL; | |
3500 | ||
3501 | if (!exec_start) | |
3502 | return -EINVAL; | |
3503 | ||
3504 | return 0; | |
3505 | } | |
3506 | ||
6b95a207 KH |
3507 | static int |
3508 | i915_gem_wait_for_pending_flip(struct drm_device *dev, | |
3509 | struct drm_gem_object **object_list, | |
3510 | int count) | |
3511 | { | |
3512 | drm_i915_private_t *dev_priv = dev->dev_private; | |
3513 | struct drm_i915_gem_object *obj_priv; | |
3514 | DEFINE_WAIT(wait); | |
3515 | int i, ret = 0; | |
3516 | ||
3517 | for (;;) { | |
3518 | prepare_to_wait(&dev_priv->pending_flip_queue, | |
3519 | &wait, TASK_INTERRUPTIBLE); | |
3520 | for (i = 0; i < count; i++) { | |
23010e43 | 3521 | obj_priv = to_intel_bo(object_list[i]); |
6b95a207 KH |
3522 | if (atomic_read(&obj_priv->pending_flip) > 0) |
3523 | break; | |
3524 | } | |
3525 | if (i == count) | |
3526 | break; | |
3527 | ||
3528 | if (!signal_pending(current)) { | |
3529 | mutex_unlock(&dev->struct_mutex); | |
3530 | schedule(); | |
3531 | mutex_lock(&dev->struct_mutex); | |
3532 | continue; | |
3533 | } | |
3534 | ret = -ERESTARTSYS; | |
3535 | break; | |
3536 | } | |
3537 | finish_wait(&dev_priv->pending_flip_queue, &wait); | |
3538 | ||
3539 | return ret; | |
3540 | } | |
3541 | ||
43b27f40 | 3542 | |
673a394b | 3543 | int |
76446cac JB |
3544 | i915_gem_do_execbuffer(struct drm_device *dev, void *data, |
3545 | struct drm_file *file_priv, | |
3546 | struct drm_i915_gem_execbuffer2 *args, | |
3547 | struct drm_i915_gem_exec_object2 *exec_list) | |
673a394b EA |
3548 | { |
3549 | drm_i915_private_t *dev_priv = dev->dev_private; | |
673a394b EA |
3550 | struct drm_gem_object **object_list = NULL; |
3551 | struct drm_gem_object *batch_obj; | |
b70d11da | 3552 | struct drm_i915_gem_object *obj_priv; |
201361a5 | 3553 | struct drm_clip_rect *cliprects = NULL; |
93533c29 | 3554 | struct drm_i915_gem_relocation_entry *relocs = NULL; |
76446cac | 3555 | int ret = 0, ret2, i, pinned = 0; |
673a394b | 3556 | uint64_t exec_offset; |
40a5f0de | 3557 | uint32_t seqno, flush_domains, reloc_index; |
6b95a207 | 3558 | int pin_tries, flips; |
673a394b | 3559 | |
852835f3 ZN |
3560 | struct intel_ring_buffer *ring = NULL; |
3561 | ||
673a394b EA |
3562 | #if WATCH_EXEC |
3563 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", | |
3564 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); | |
3565 | #endif | |
d1b851fc ZN |
3566 | if (args->flags & I915_EXEC_BSD) { |
3567 | if (!HAS_BSD(dev)) { | |
3568 | DRM_ERROR("execbuf with wrong flag\n"); | |
3569 | return -EINVAL; | |
3570 | } | |
3571 | ring = &dev_priv->bsd_ring; | |
3572 | } else { | |
3573 | ring = &dev_priv->render_ring; | |
3574 | } | |
3575 | ||
4f481ed2 EA |
3576 | if (args->buffer_count < 1) { |
3577 | DRM_ERROR("execbuf with %d buffers\n", args->buffer_count); | |
3578 | return -EINVAL; | |
3579 | } | |
c8e0f93a | 3580 | object_list = drm_malloc_ab(sizeof(*object_list), args->buffer_count); |
76446cac JB |
3581 | if (object_list == NULL) { |
3582 | DRM_ERROR("Failed to allocate object list for %d buffers\n", | |
673a394b EA |
3583 | args->buffer_count); |
3584 | ret = -ENOMEM; | |
3585 | goto pre_mutex_err; | |
3586 | } | |
673a394b | 3587 | |
201361a5 | 3588 | if (args->num_cliprects != 0) { |
9a298b2a EA |
3589 | cliprects = kcalloc(args->num_cliprects, sizeof(*cliprects), |
3590 | GFP_KERNEL); | |
a40e8d31 OA |
3591 | if (cliprects == NULL) { |
3592 | ret = -ENOMEM; | |
201361a5 | 3593 | goto pre_mutex_err; |
a40e8d31 | 3594 | } |
201361a5 EA |
3595 | |
3596 | ret = copy_from_user(cliprects, | |
3597 | (struct drm_clip_rect __user *) | |
3598 | (uintptr_t) args->cliprects_ptr, | |
3599 | sizeof(*cliprects) * args->num_cliprects); | |
3600 | if (ret != 0) { | |
3601 | DRM_ERROR("copy %d cliprects failed: %d\n", | |
3602 | args->num_cliprects, ret); | |
c877cdce | 3603 | ret = -EFAULT; |
201361a5 EA |
3604 | goto pre_mutex_err; |
3605 | } | |
3606 | } | |
3607 | ||
40a5f0de EA |
3608 | ret = i915_gem_get_relocs_from_user(exec_list, args->buffer_count, |
3609 | &relocs); | |
3610 | if (ret != 0) | |
3611 | goto pre_mutex_err; | |
3612 | ||
673a394b EA |
3613 | mutex_lock(&dev->struct_mutex); |
3614 | ||
3615 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
3616 | ||
ba1234d1 | 3617 | if (atomic_read(&dev_priv->mm.wedged)) { |
673a394b | 3618 | mutex_unlock(&dev->struct_mutex); |
a198bc80 CW |
3619 | ret = -EIO; |
3620 | goto pre_mutex_err; | |
673a394b EA |
3621 | } |
3622 | ||
3623 | if (dev_priv->mm.suspended) { | |
673a394b | 3624 | mutex_unlock(&dev->struct_mutex); |
a198bc80 CW |
3625 | ret = -EBUSY; |
3626 | goto pre_mutex_err; | |
673a394b EA |
3627 | } |
3628 | ||
ac94a962 | 3629 | /* Look up object handles */ |
6b95a207 | 3630 | flips = 0; |
673a394b EA |
3631 | for (i = 0; i < args->buffer_count; i++) { |
3632 | object_list[i] = drm_gem_object_lookup(dev, file_priv, | |
3633 | exec_list[i].handle); | |
3634 | if (object_list[i] == NULL) { | |
3635 | DRM_ERROR("Invalid object handle %d at index %d\n", | |
3636 | exec_list[i].handle, i); | |
0ce907f8 CW |
3637 | /* prevent error path from reading uninitialized data */ |
3638 | args->buffer_count = i + 1; | |
bf79cb91 | 3639 | ret = -ENOENT; |
673a394b EA |
3640 | goto err; |
3641 | } | |
b70d11da | 3642 | |
23010e43 | 3643 | obj_priv = to_intel_bo(object_list[i]); |
b70d11da KH |
3644 | if (obj_priv->in_execbuffer) { |
3645 | DRM_ERROR("Object %p appears more than once in object list\n", | |
3646 | object_list[i]); | |
0ce907f8 CW |
3647 | /* prevent error path from reading uninitialized data */ |
3648 | args->buffer_count = i + 1; | |
bf79cb91 | 3649 | ret = -EINVAL; |
b70d11da KH |
3650 | goto err; |
3651 | } | |
3652 | obj_priv->in_execbuffer = true; | |
6b95a207 KH |
3653 | flips += atomic_read(&obj_priv->pending_flip); |
3654 | } | |
3655 | ||
3656 | if (flips > 0) { | |
3657 | ret = i915_gem_wait_for_pending_flip(dev, object_list, | |
3658 | args->buffer_count); | |
3659 | if (ret) | |
3660 | goto err; | |
ac94a962 | 3661 | } |
673a394b | 3662 | |
ac94a962 KP |
3663 | /* Pin and relocate */ |
3664 | for (pin_tries = 0; ; pin_tries++) { | |
3665 | ret = 0; | |
40a5f0de EA |
3666 | reloc_index = 0; |
3667 | ||
ac94a962 KP |
3668 | for (i = 0; i < args->buffer_count; i++) { |
3669 | object_list[i]->pending_read_domains = 0; | |
3670 | object_list[i]->pending_write_domain = 0; | |
3671 | ret = i915_gem_object_pin_and_relocate(object_list[i], | |
3672 | file_priv, | |
40a5f0de EA |
3673 | &exec_list[i], |
3674 | &relocs[reloc_index]); | |
ac94a962 KP |
3675 | if (ret) |
3676 | break; | |
3677 | pinned = i + 1; | |
40a5f0de | 3678 | reloc_index += exec_list[i].relocation_count; |
ac94a962 KP |
3679 | } |
3680 | /* success */ | |
3681 | if (ret == 0) | |
3682 | break; | |
3683 | ||
3684 | /* error other than GTT full, or we've already tried again */ | |
2939e1f5 | 3685 | if (ret != -ENOSPC || pin_tries >= 1) { |
07f73f69 CW |
3686 | if (ret != -ERESTARTSYS) { |
3687 | unsigned long long total_size = 0; | |
3d1cc470 CW |
3688 | int num_fences = 0; |
3689 | for (i = 0; i < args->buffer_count; i++) { | |
43b27f40 | 3690 | obj_priv = to_intel_bo(object_list[i]); |
3d1cc470 | 3691 | |
07f73f69 | 3692 | total_size += object_list[i]->size; |
3d1cc470 CW |
3693 | num_fences += |
3694 | exec_list[i].flags & EXEC_OBJECT_NEEDS_FENCE && | |
3695 | obj_priv->tiling_mode != I915_TILING_NONE; | |
3696 | } | |
3697 | DRM_ERROR("Failed to pin buffer %d of %d, total %llu bytes, %d fences: %d\n", | |
07f73f69 | 3698 | pinned+1, args->buffer_count, |
3d1cc470 CW |
3699 | total_size, num_fences, |
3700 | ret); | |
07f73f69 CW |
3701 | DRM_ERROR("%d objects [%d pinned], " |
3702 | "%d object bytes [%d pinned], " | |
3703 | "%d/%d gtt bytes\n", | |
3704 | atomic_read(&dev->object_count), | |
3705 | atomic_read(&dev->pin_count), | |
3706 | atomic_read(&dev->object_memory), | |
3707 | atomic_read(&dev->pin_memory), | |
3708 | atomic_read(&dev->gtt_memory), | |
3709 | dev->gtt_total); | |
3710 | } | |
673a394b EA |
3711 | goto err; |
3712 | } | |
ac94a962 KP |
3713 | |
3714 | /* unpin all of our buffers */ | |
3715 | for (i = 0; i < pinned; i++) | |
3716 | i915_gem_object_unpin(object_list[i]); | |
b1177636 | 3717 | pinned = 0; |
ac94a962 KP |
3718 | |
3719 | /* evict everyone we can from the aperture */ | |
3720 | ret = i915_gem_evict_everything(dev); | |
07f73f69 | 3721 | if (ret && ret != -ENOSPC) |
ac94a962 | 3722 | goto err; |
673a394b EA |
3723 | } |
3724 | ||
3725 | /* Set the pending read domains for the batch buffer to COMMAND */ | |
3726 | batch_obj = object_list[args->buffer_count-1]; | |
5f26a2c7 CW |
3727 | if (batch_obj->pending_write_domain) { |
3728 | DRM_ERROR("Attempting to use self-modifying batch buffer\n"); | |
3729 | ret = -EINVAL; | |
3730 | goto err; | |
3731 | } | |
3732 | batch_obj->pending_read_domains |= I915_GEM_DOMAIN_COMMAND; | |
673a394b | 3733 | |
83d60795 CW |
3734 | /* Sanity check the batch buffer, prior to moving objects */ |
3735 | exec_offset = exec_list[args->buffer_count - 1].offset; | |
3736 | ret = i915_gem_check_execbuffer (args, exec_offset); | |
3737 | if (ret != 0) { | |
3738 | DRM_ERROR("execbuf with invalid offset/length\n"); | |
3739 | goto err; | |
3740 | } | |
3741 | ||
673a394b EA |
3742 | i915_verify_inactive(dev, __FILE__, __LINE__); |
3743 | ||
646f0f6e KP |
3744 | /* Zero the global flush/invalidate flags. These |
3745 | * will be modified as new domains are computed | |
3746 | * for each object | |
3747 | */ | |
3748 | dev->invalidate_domains = 0; | |
3749 | dev->flush_domains = 0; | |
88f356b7 | 3750 | dev_priv->flush_rings = 0; |
646f0f6e | 3751 | |
673a394b EA |
3752 | for (i = 0; i < args->buffer_count; i++) { |
3753 | struct drm_gem_object *obj = object_list[i]; | |
673a394b | 3754 | |
646f0f6e | 3755 | /* Compute new gpu domains and update invalidate/flush */ |
8b0e378a | 3756 | i915_gem_object_set_to_gpu_domain(obj); |
673a394b EA |
3757 | } |
3758 | ||
3759 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
3760 | ||
646f0f6e KP |
3761 | if (dev->invalidate_domains | dev->flush_domains) { |
3762 | #if WATCH_EXEC | |
3763 | DRM_INFO("%s: invalidate_domains %08x flush_domains %08x\n", | |
3764 | __func__, | |
3765 | dev->invalidate_domains, | |
3766 | dev->flush_domains); | |
3767 | #endif | |
3768 | i915_gem_flush(dev, | |
3769 | dev->invalidate_domains, | |
3770 | dev->flush_domains); | |
88f356b7 | 3771 | if (dev_priv->flush_rings & FLUSH_RENDER_RING) |
b962442e | 3772 | (void)i915_add_request(dev, file_priv, |
88f356b7 CW |
3773 | dev->flush_domains, |
3774 | &dev_priv->render_ring); | |
3775 | if (dev_priv->flush_rings & FLUSH_BSD_RING) | |
3776 | (void)i915_add_request(dev, file_priv, | |
3777 | dev->flush_domains, | |
3778 | &dev_priv->bsd_ring); | |
646f0f6e | 3779 | } |
673a394b | 3780 | |
efbeed96 EA |
3781 | for (i = 0; i < args->buffer_count; i++) { |
3782 | struct drm_gem_object *obj = object_list[i]; | |
23010e43 | 3783 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
1c5d22f7 | 3784 | uint32_t old_write_domain = obj->write_domain; |
efbeed96 EA |
3785 | |
3786 | obj->write_domain = obj->pending_write_domain; | |
99fcb766 DV |
3787 | if (obj->write_domain) |
3788 | list_move_tail(&obj_priv->gpu_write_list, | |
3789 | &dev_priv->mm.gpu_write_list); | |
3790 | else | |
3791 | list_del_init(&obj_priv->gpu_write_list); | |
3792 | ||
1c5d22f7 CW |
3793 | trace_i915_gem_object_change_domain(obj, |
3794 | obj->read_domains, | |
3795 | old_write_domain); | |
efbeed96 EA |
3796 | } |
3797 | ||
673a394b EA |
3798 | i915_verify_inactive(dev, __FILE__, __LINE__); |
3799 | ||
3800 | #if WATCH_COHERENCY | |
3801 | for (i = 0; i < args->buffer_count; i++) { | |
3802 | i915_gem_object_check_coherency(object_list[i], | |
3803 | exec_list[i].handle); | |
3804 | } | |
3805 | #endif | |
3806 | ||
673a394b | 3807 | #if WATCH_EXEC |
6911a9b8 | 3808 | i915_gem_dump_object(batch_obj, |
673a394b EA |
3809 | args->batch_len, |
3810 | __func__, | |
3811 | ~0); | |
3812 | #endif | |
3813 | ||
673a394b | 3814 | /* Exec the batchbuffer */ |
852835f3 ZN |
3815 | ret = ring->dispatch_gem_execbuffer(dev, ring, args, |
3816 | cliprects, exec_offset); | |
673a394b EA |
3817 | if (ret) { |
3818 | DRM_ERROR("dispatch failed %d\n", ret); | |
3819 | goto err; | |
3820 | } | |
3821 | ||
3822 | /* | |
3823 | * Ensure that the commands in the batch buffer are | |
3824 | * finished before the interrupt fires | |
3825 | */ | |
852835f3 | 3826 | flush_domains = i915_retire_commands(dev, ring); |
673a394b EA |
3827 | |
3828 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
3829 | ||
3830 | /* | |
3831 | * Get a seqno representing the execution of the current buffer, | |
3832 | * which we can wait on. We would like to mitigate these interrupts, | |
3833 | * likely by only creating seqnos occasionally (so that we have | |
3834 | * *some* interrupts representing completion of buffers that we can | |
3835 | * wait on when trying to clear up gtt space). | |
3836 | */ | |
852835f3 | 3837 | seqno = i915_add_request(dev, file_priv, flush_domains, ring); |
673a394b | 3838 | BUG_ON(seqno == 0); |
673a394b EA |
3839 | for (i = 0; i < args->buffer_count; i++) { |
3840 | struct drm_gem_object *obj = object_list[i]; | |
852835f3 | 3841 | obj_priv = to_intel_bo(obj); |
673a394b | 3842 | |
852835f3 | 3843 | i915_gem_object_move_to_active(obj, seqno, ring); |
673a394b EA |
3844 | #if WATCH_LRU |
3845 | DRM_INFO("%s: move to exec list %p\n", __func__, obj); | |
3846 | #endif | |
3847 | } | |
3848 | #if WATCH_LRU | |
3849 | i915_dump_lru(dev, __func__); | |
3850 | #endif | |
3851 | ||
3852 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
3853 | ||
673a394b | 3854 | err: |
aad87dff JL |
3855 | for (i = 0; i < pinned; i++) |
3856 | i915_gem_object_unpin(object_list[i]); | |
3857 | ||
b70d11da KH |
3858 | for (i = 0; i < args->buffer_count; i++) { |
3859 | if (object_list[i]) { | |
23010e43 | 3860 | obj_priv = to_intel_bo(object_list[i]); |
b70d11da KH |
3861 | obj_priv->in_execbuffer = false; |
3862 | } | |
aad87dff | 3863 | drm_gem_object_unreference(object_list[i]); |
b70d11da | 3864 | } |
673a394b | 3865 | |
673a394b EA |
3866 | mutex_unlock(&dev->struct_mutex); |
3867 | ||
93533c29 | 3868 | pre_mutex_err: |
40a5f0de EA |
3869 | /* Copy the updated relocations out regardless of current error |
3870 | * state. Failure to update the relocs would mean that the next | |
3871 | * time userland calls execbuf, it would do so with presumed offset | |
3872 | * state that didn't match the actual object state. | |
3873 | */ | |
3874 | ret2 = i915_gem_put_relocs_to_user(exec_list, args->buffer_count, | |
3875 | relocs); | |
3876 | if (ret2 != 0) { | |
3877 | DRM_ERROR("Failed to copy relocations back out: %d\n", ret2); | |
3878 | ||
3879 | if (ret == 0) | |
3880 | ret = ret2; | |
3881 | } | |
3882 | ||
8e7d2b2c | 3883 | drm_free_large(object_list); |
9a298b2a | 3884 | kfree(cliprects); |
673a394b EA |
3885 | |
3886 | return ret; | |
3887 | } | |
3888 | ||
76446cac JB |
3889 | /* |
3890 | * Legacy execbuffer just creates an exec2 list from the original exec object | |
3891 | * list array and passes it to the real function. | |
3892 | */ | |
3893 | int | |
3894 | i915_gem_execbuffer(struct drm_device *dev, void *data, | |
3895 | struct drm_file *file_priv) | |
3896 | { | |
3897 | struct drm_i915_gem_execbuffer *args = data; | |
3898 | struct drm_i915_gem_execbuffer2 exec2; | |
3899 | struct drm_i915_gem_exec_object *exec_list = NULL; | |
3900 | struct drm_i915_gem_exec_object2 *exec2_list = NULL; | |
3901 | int ret, i; | |
3902 | ||
3903 | #if WATCH_EXEC | |
3904 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", | |
3905 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); | |
3906 | #endif | |
3907 | ||
3908 | if (args->buffer_count < 1) { | |
3909 | DRM_ERROR("execbuf with %d buffers\n", args->buffer_count); | |
3910 | return -EINVAL; | |
3911 | } | |
3912 | ||
3913 | /* Copy in the exec list from userland */ | |
3914 | exec_list = drm_malloc_ab(sizeof(*exec_list), args->buffer_count); | |
3915 | exec2_list = drm_malloc_ab(sizeof(*exec2_list), args->buffer_count); | |
3916 | if (exec_list == NULL || exec2_list == NULL) { | |
3917 | DRM_ERROR("Failed to allocate exec list for %d buffers\n", | |
3918 | args->buffer_count); | |
3919 | drm_free_large(exec_list); | |
3920 | drm_free_large(exec2_list); | |
3921 | return -ENOMEM; | |
3922 | } | |
3923 | ret = copy_from_user(exec_list, | |
3924 | (struct drm_i915_relocation_entry __user *) | |
3925 | (uintptr_t) args->buffers_ptr, | |
3926 | sizeof(*exec_list) * args->buffer_count); | |
3927 | if (ret != 0) { | |
3928 | DRM_ERROR("copy %d exec entries failed %d\n", | |
3929 | args->buffer_count, ret); | |
3930 | drm_free_large(exec_list); | |
3931 | drm_free_large(exec2_list); | |
3932 | return -EFAULT; | |
3933 | } | |
3934 | ||
3935 | for (i = 0; i < args->buffer_count; i++) { | |
3936 | exec2_list[i].handle = exec_list[i].handle; | |
3937 | exec2_list[i].relocation_count = exec_list[i].relocation_count; | |
3938 | exec2_list[i].relocs_ptr = exec_list[i].relocs_ptr; | |
3939 | exec2_list[i].alignment = exec_list[i].alignment; | |
3940 | exec2_list[i].offset = exec_list[i].offset; | |
3941 | if (!IS_I965G(dev)) | |
3942 | exec2_list[i].flags = EXEC_OBJECT_NEEDS_FENCE; | |
3943 | else | |
3944 | exec2_list[i].flags = 0; | |
3945 | } | |
3946 | ||
3947 | exec2.buffers_ptr = args->buffers_ptr; | |
3948 | exec2.buffer_count = args->buffer_count; | |
3949 | exec2.batch_start_offset = args->batch_start_offset; | |
3950 | exec2.batch_len = args->batch_len; | |
3951 | exec2.DR1 = args->DR1; | |
3952 | exec2.DR4 = args->DR4; | |
3953 | exec2.num_cliprects = args->num_cliprects; | |
3954 | exec2.cliprects_ptr = args->cliprects_ptr; | |
852835f3 | 3955 | exec2.flags = I915_EXEC_RENDER; |
76446cac JB |
3956 | |
3957 | ret = i915_gem_do_execbuffer(dev, data, file_priv, &exec2, exec2_list); | |
3958 | if (!ret) { | |
3959 | /* Copy the new buffer offsets back to the user's exec list. */ | |
3960 | for (i = 0; i < args->buffer_count; i++) | |
3961 | exec_list[i].offset = exec2_list[i].offset; | |
3962 | /* ... and back out to userspace */ | |
3963 | ret = copy_to_user((struct drm_i915_relocation_entry __user *) | |
3964 | (uintptr_t) args->buffers_ptr, | |
3965 | exec_list, | |
3966 | sizeof(*exec_list) * args->buffer_count); | |
3967 | if (ret) { | |
3968 | ret = -EFAULT; | |
3969 | DRM_ERROR("failed to copy %d exec entries " | |
3970 | "back to user (%d)\n", | |
3971 | args->buffer_count, ret); | |
3972 | } | |
76446cac JB |
3973 | } |
3974 | ||
3975 | drm_free_large(exec_list); | |
3976 | drm_free_large(exec2_list); | |
3977 | return ret; | |
3978 | } | |
3979 | ||
3980 | int | |
3981 | i915_gem_execbuffer2(struct drm_device *dev, void *data, | |
3982 | struct drm_file *file_priv) | |
3983 | { | |
3984 | struct drm_i915_gem_execbuffer2 *args = data; | |
3985 | struct drm_i915_gem_exec_object2 *exec2_list = NULL; | |
3986 | int ret; | |
3987 | ||
3988 | #if WATCH_EXEC | |
3989 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", | |
3990 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); | |
3991 | #endif | |
3992 | ||
3993 | if (args->buffer_count < 1) { | |
3994 | DRM_ERROR("execbuf2 with %d buffers\n", args->buffer_count); | |
3995 | return -EINVAL; | |
3996 | } | |
3997 | ||
3998 | exec2_list = drm_malloc_ab(sizeof(*exec2_list), args->buffer_count); | |
3999 | if (exec2_list == NULL) { | |
4000 | DRM_ERROR("Failed to allocate exec list for %d buffers\n", | |
4001 | args->buffer_count); | |
4002 | return -ENOMEM; | |
4003 | } | |
4004 | ret = copy_from_user(exec2_list, | |
4005 | (struct drm_i915_relocation_entry __user *) | |
4006 | (uintptr_t) args->buffers_ptr, | |
4007 | sizeof(*exec2_list) * args->buffer_count); | |
4008 | if (ret != 0) { | |
4009 | DRM_ERROR("copy %d exec entries failed %d\n", | |
4010 | args->buffer_count, ret); | |
4011 | drm_free_large(exec2_list); | |
4012 | return -EFAULT; | |
4013 | } | |
4014 | ||
4015 | ret = i915_gem_do_execbuffer(dev, data, file_priv, args, exec2_list); | |
4016 | if (!ret) { | |
4017 | /* Copy the new buffer offsets back to the user's exec list. */ | |
4018 | ret = copy_to_user((struct drm_i915_relocation_entry __user *) | |
4019 | (uintptr_t) args->buffers_ptr, | |
4020 | exec2_list, | |
4021 | sizeof(*exec2_list) * args->buffer_count); | |
4022 | if (ret) { | |
4023 | ret = -EFAULT; | |
4024 | DRM_ERROR("failed to copy %d exec entries " | |
4025 | "back to user (%d)\n", | |
4026 | args->buffer_count, ret); | |
4027 | } | |
4028 | } | |
4029 | ||
4030 | drm_free_large(exec2_list); | |
4031 | return ret; | |
4032 | } | |
4033 | ||
673a394b EA |
4034 | int |
4035 | i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment) | |
4036 | { | |
4037 | struct drm_device *dev = obj->dev; | |
23010e43 | 4038 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
4039 | int ret; |
4040 | ||
778c3544 DV |
4041 | BUG_ON(obj_priv->pin_count == DRM_I915_GEM_OBJECT_MAX_PIN_COUNT); |
4042 | ||
673a394b | 4043 | i915_verify_inactive(dev, __FILE__, __LINE__); |
ac0c6b5a CW |
4044 | |
4045 | if (obj_priv->gtt_space != NULL) { | |
4046 | if (alignment == 0) | |
4047 | alignment = i915_gem_get_gtt_alignment(obj); | |
4048 | if (obj_priv->gtt_offset & (alignment - 1)) { | |
ae7d49d8 CW |
4049 | WARN(obj_priv->pin_count, |
4050 | "bo is already pinned with incorrect alignment:" | |
4051 | " offset=%x, req.alignment=%x\n", | |
4052 | obj_priv->gtt_offset, alignment); | |
ac0c6b5a CW |
4053 | ret = i915_gem_object_unbind(obj); |
4054 | if (ret) | |
4055 | return ret; | |
4056 | } | |
4057 | } | |
4058 | ||
673a394b EA |
4059 | if (obj_priv->gtt_space == NULL) { |
4060 | ret = i915_gem_object_bind_to_gtt(obj, alignment); | |
9731129c | 4061 | if (ret) |
673a394b | 4062 | return ret; |
22c344e9 | 4063 | } |
76446cac | 4064 | |
673a394b EA |
4065 | obj_priv->pin_count++; |
4066 | ||
4067 | /* If the object is not active and not pending a flush, | |
4068 | * remove it from the inactive list | |
4069 | */ | |
4070 | if (obj_priv->pin_count == 1) { | |
4071 | atomic_inc(&dev->pin_count); | |
4072 | atomic_add(obj->size, &dev->pin_memory); | |
4073 | if (!obj_priv->active && | |
bf1a1092 | 4074 | (obj->write_domain & I915_GEM_GPU_DOMAINS) == 0) |
673a394b EA |
4075 | list_del_init(&obj_priv->list); |
4076 | } | |
4077 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
4078 | ||
4079 | return 0; | |
4080 | } | |
4081 | ||
4082 | void | |
4083 | i915_gem_object_unpin(struct drm_gem_object *obj) | |
4084 | { | |
4085 | struct drm_device *dev = obj->dev; | |
4086 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 4087 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
4088 | |
4089 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
4090 | obj_priv->pin_count--; | |
4091 | BUG_ON(obj_priv->pin_count < 0); | |
4092 | BUG_ON(obj_priv->gtt_space == NULL); | |
4093 | ||
4094 | /* If the object is no longer pinned, and is | |
4095 | * neither active nor being flushed, then stick it on | |
4096 | * the inactive list | |
4097 | */ | |
4098 | if (obj_priv->pin_count == 0) { | |
4099 | if (!obj_priv->active && | |
21d509e3 | 4100 | (obj->write_domain & I915_GEM_GPU_DOMAINS) == 0) |
673a394b EA |
4101 | list_move_tail(&obj_priv->list, |
4102 | &dev_priv->mm.inactive_list); | |
4103 | atomic_dec(&dev->pin_count); | |
4104 | atomic_sub(obj->size, &dev->pin_memory); | |
4105 | } | |
4106 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
4107 | } | |
4108 | ||
4109 | int | |
4110 | i915_gem_pin_ioctl(struct drm_device *dev, void *data, | |
4111 | struct drm_file *file_priv) | |
4112 | { | |
4113 | struct drm_i915_gem_pin *args = data; | |
4114 | struct drm_gem_object *obj; | |
4115 | struct drm_i915_gem_object *obj_priv; | |
4116 | int ret; | |
4117 | ||
4118 | mutex_lock(&dev->struct_mutex); | |
4119 | ||
4120 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
4121 | if (obj == NULL) { | |
4122 | DRM_ERROR("Bad handle in i915_gem_pin_ioctl(): %d\n", | |
4123 | args->handle); | |
4124 | mutex_unlock(&dev->struct_mutex); | |
bf79cb91 | 4125 | return -ENOENT; |
673a394b | 4126 | } |
23010e43 | 4127 | obj_priv = to_intel_bo(obj); |
673a394b | 4128 | |
bb6baf76 CW |
4129 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
4130 | DRM_ERROR("Attempting to pin a purgeable buffer\n"); | |
3ef94daa CW |
4131 | drm_gem_object_unreference(obj); |
4132 | mutex_unlock(&dev->struct_mutex); | |
4133 | return -EINVAL; | |
4134 | } | |
4135 | ||
79e53945 JB |
4136 | if (obj_priv->pin_filp != NULL && obj_priv->pin_filp != file_priv) { |
4137 | DRM_ERROR("Already pinned in i915_gem_pin_ioctl(): %d\n", | |
4138 | args->handle); | |
96dec61d | 4139 | drm_gem_object_unreference(obj); |
673a394b | 4140 | mutex_unlock(&dev->struct_mutex); |
79e53945 JB |
4141 | return -EINVAL; |
4142 | } | |
4143 | ||
4144 | obj_priv->user_pin_count++; | |
4145 | obj_priv->pin_filp = file_priv; | |
4146 | if (obj_priv->user_pin_count == 1) { | |
4147 | ret = i915_gem_object_pin(obj, args->alignment); | |
4148 | if (ret != 0) { | |
4149 | drm_gem_object_unreference(obj); | |
4150 | mutex_unlock(&dev->struct_mutex); | |
4151 | return ret; | |
4152 | } | |
673a394b EA |
4153 | } |
4154 | ||
4155 | /* XXX - flush the CPU caches for pinned objects | |
4156 | * as the X server doesn't manage domains yet | |
4157 | */ | |
e47c68e9 | 4158 | i915_gem_object_flush_cpu_write_domain(obj); |
673a394b EA |
4159 | args->offset = obj_priv->gtt_offset; |
4160 | drm_gem_object_unreference(obj); | |
4161 | mutex_unlock(&dev->struct_mutex); | |
4162 | ||
4163 | return 0; | |
4164 | } | |
4165 | ||
4166 | int | |
4167 | i915_gem_unpin_ioctl(struct drm_device *dev, void *data, | |
4168 | struct drm_file *file_priv) | |
4169 | { | |
4170 | struct drm_i915_gem_pin *args = data; | |
4171 | struct drm_gem_object *obj; | |
79e53945 | 4172 | struct drm_i915_gem_object *obj_priv; |
673a394b EA |
4173 | |
4174 | mutex_lock(&dev->struct_mutex); | |
4175 | ||
4176 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
4177 | if (obj == NULL) { | |
4178 | DRM_ERROR("Bad handle in i915_gem_unpin_ioctl(): %d\n", | |
4179 | args->handle); | |
4180 | mutex_unlock(&dev->struct_mutex); | |
bf79cb91 | 4181 | return -ENOENT; |
673a394b EA |
4182 | } |
4183 | ||
23010e43 | 4184 | obj_priv = to_intel_bo(obj); |
79e53945 JB |
4185 | if (obj_priv->pin_filp != file_priv) { |
4186 | DRM_ERROR("Not pinned by caller in i915_gem_pin_ioctl(): %d\n", | |
4187 | args->handle); | |
4188 | drm_gem_object_unreference(obj); | |
4189 | mutex_unlock(&dev->struct_mutex); | |
4190 | return -EINVAL; | |
4191 | } | |
4192 | obj_priv->user_pin_count--; | |
4193 | if (obj_priv->user_pin_count == 0) { | |
4194 | obj_priv->pin_filp = NULL; | |
4195 | i915_gem_object_unpin(obj); | |
4196 | } | |
673a394b EA |
4197 | |
4198 | drm_gem_object_unreference(obj); | |
4199 | mutex_unlock(&dev->struct_mutex); | |
4200 | return 0; | |
4201 | } | |
4202 | ||
4203 | int | |
4204 | i915_gem_busy_ioctl(struct drm_device *dev, void *data, | |
4205 | struct drm_file *file_priv) | |
4206 | { | |
4207 | struct drm_i915_gem_busy *args = data; | |
4208 | struct drm_gem_object *obj; | |
4209 | struct drm_i915_gem_object *obj_priv; | |
4210 | ||
673a394b EA |
4211 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
4212 | if (obj == NULL) { | |
4213 | DRM_ERROR("Bad handle in i915_gem_busy_ioctl(): %d\n", | |
4214 | args->handle); | |
bf79cb91 | 4215 | return -ENOENT; |
673a394b EA |
4216 | } |
4217 | ||
b1ce786c | 4218 | mutex_lock(&dev->struct_mutex); |
d1b851fc | 4219 | |
0be555b6 CW |
4220 | /* Count all active objects as busy, even if they are currently not used |
4221 | * by the gpu. Users of this interface expect objects to eventually | |
4222 | * become non-busy without any further actions, therefore emit any | |
4223 | * necessary flushes here. | |
c4de0a5d | 4224 | */ |
0be555b6 CW |
4225 | obj_priv = to_intel_bo(obj); |
4226 | args->busy = obj_priv->active; | |
4227 | if (args->busy) { | |
4228 | /* Unconditionally flush objects, even when the gpu still uses this | |
4229 | * object. Userspace calling this function indicates that it wants to | |
4230 | * use this buffer rather sooner than later, so issuing the required | |
4231 | * flush earlier is beneficial. | |
4232 | */ | |
4233 | if (obj->write_domain) { | |
4234 | i915_gem_flush(dev, 0, obj->write_domain); | |
4235 | (void)i915_add_request(dev, file_priv, obj->write_domain, obj_priv->ring); | |
4236 | } | |
4237 | ||
4238 | /* Update the active list for the hardware's current position. | |
4239 | * Otherwise this only updates on a delayed timer or when irqs | |
4240 | * are actually unmasked, and our working set ends up being | |
4241 | * larger than required. | |
4242 | */ | |
4243 | i915_gem_retire_requests_ring(dev, obj_priv->ring); | |
4244 | ||
4245 | args->busy = obj_priv->active; | |
4246 | } | |
673a394b EA |
4247 | |
4248 | drm_gem_object_unreference(obj); | |
4249 | mutex_unlock(&dev->struct_mutex); | |
4250 | return 0; | |
4251 | } | |
4252 | ||
4253 | int | |
4254 | i915_gem_throttle_ioctl(struct drm_device *dev, void *data, | |
4255 | struct drm_file *file_priv) | |
4256 | { | |
4257 | return i915_gem_ring_throttle(dev, file_priv); | |
4258 | } | |
4259 | ||
3ef94daa CW |
4260 | int |
4261 | i915_gem_madvise_ioctl(struct drm_device *dev, void *data, | |
4262 | struct drm_file *file_priv) | |
4263 | { | |
4264 | struct drm_i915_gem_madvise *args = data; | |
4265 | struct drm_gem_object *obj; | |
4266 | struct drm_i915_gem_object *obj_priv; | |
4267 | ||
4268 | switch (args->madv) { | |
4269 | case I915_MADV_DONTNEED: | |
4270 | case I915_MADV_WILLNEED: | |
4271 | break; | |
4272 | default: | |
4273 | return -EINVAL; | |
4274 | } | |
4275 | ||
4276 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
4277 | if (obj == NULL) { | |
4278 | DRM_ERROR("Bad handle in i915_gem_madvise_ioctl(): %d\n", | |
4279 | args->handle); | |
bf79cb91 | 4280 | return -ENOENT; |
3ef94daa CW |
4281 | } |
4282 | ||
4283 | mutex_lock(&dev->struct_mutex); | |
23010e43 | 4284 | obj_priv = to_intel_bo(obj); |
3ef94daa CW |
4285 | |
4286 | if (obj_priv->pin_count) { | |
4287 | drm_gem_object_unreference(obj); | |
4288 | mutex_unlock(&dev->struct_mutex); | |
4289 | ||
4290 | DRM_ERROR("Attempted i915_gem_madvise_ioctl() on a pinned object\n"); | |
4291 | return -EINVAL; | |
4292 | } | |
4293 | ||
bb6baf76 CW |
4294 | if (obj_priv->madv != __I915_MADV_PURGED) |
4295 | obj_priv->madv = args->madv; | |
3ef94daa | 4296 | |
2d7ef395 CW |
4297 | /* if the object is no longer bound, discard its backing storage */ |
4298 | if (i915_gem_object_is_purgeable(obj_priv) && | |
4299 | obj_priv->gtt_space == NULL) | |
4300 | i915_gem_object_truncate(obj); | |
4301 | ||
bb6baf76 CW |
4302 | args->retained = obj_priv->madv != __I915_MADV_PURGED; |
4303 | ||
3ef94daa CW |
4304 | drm_gem_object_unreference(obj); |
4305 | mutex_unlock(&dev->struct_mutex); | |
4306 | ||
4307 | return 0; | |
4308 | } | |
4309 | ||
ac52bc56 DV |
4310 | struct drm_gem_object * i915_gem_alloc_object(struct drm_device *dev, |
4311 | size_t size) | |
4312 | { | |
c397b908 | 4313 | struct drm_i915_gem_object *obj; |
ac52bc56 | 4314 | |
c397b908 DV |
4315 | obj = kzalloc(sizeof(*obj), GFP_KERNEL); |
4316 | if (obj == NULL) | |
4317 | return NULL; | |
673a394b | 4318 | |
c397b908 DV |
4319 | if (drm_gem_object_init(dev, &obj->base, size) != 0) { |
4320 | kfree(obj); | |
4321 | return NULL; | |
4322 | } | |
673a394b | 4323 | |
c397b908 DV |
4324 | obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
4325 | obj->base.read_domains = I915_GEM_DOMAIN_CPU; | |
673a394b | 4326 | |
c397b908 | 4327 | obj->agp_type = AGP_USER_MEMORY; |
62b8b215 | 4328 | obj->base.driver_private = NULL; |
c397b908 DV |
4329 | obj->fence_reg = I915_FENCE_REG_NONE; |
4330 | INIT_LIST_HEAD(&obj->list); | |
4331 | INIT_LIST_HEAD(&obj->gpu_write_list); | |
c397b908 | 4332 | obj->madv = I915_MADV_WILLNEED; |
de151cf6 | 4333 | |
c397b908 DV |
4334 | trace_i915_gem_object_create(&obj->base); |
4335 | ||
4336 | return &obj->base; | |
4337 | } | |
4338 | ||
4339 | int i915_gem_init_object(struct drm_gem_object *obj) | |
4340 | { | |
4341 | BUG(); | |
de151cf6 | 4342 | |
673a394b EA |
4343 | return 0; |
4344 | } | |
4345 | ||
be72615b | 4346 | static void i915_gem_free_object_tail(struct drm_gem_object *obj) |
673a394b | 4347 | { |
de151cf6 | 4348 | struct drm_device *dev = obj->dev; |
be72615b | 4349 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 4350 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
be72615b | 4351 | int ret; |
673a394b | 4352 | |
be72615b CW |
4353 | ret = i915_gem_object_unbind(obj); |
4354 | if (ret == -ERESTARTSYS) { | |
4355 | list_move(&obj_priv->list, | |
4356 | &dev_priv->mm.deferred_free_list); | |
4357 | return; | |
4358 | } | |
673a394b | 4359 | |
7e616158 CW |
4360 | if (obj_priv->mmap_offset) |
4361 | i915_gem_free_mmap_offset(obj); | |
de151cf6 | 4362 | |
c397b908 DV |
4363 | drm_gem_object_release(obj); |
4364 | ||
9a298b2a | 4365 | kfree(obj_priv->page_cpu_valid); |
280b713b | 4366 | kfree(obj_priv->bit_17); |
c397b908 | 4367 | kfree(obj_priv); |
673a394b EA |
4368 | } |
4369 | ||
be72615b CW |
4370 | void i915_gem_free_object(struct drm_gem_object *obj) |
4371 | { | |
4372 | struct drm_device *dev = obj->dev; | |
4373 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); | |
4374 | ||
4375 | trace_i915_gem_object_destroy(obj); | |
4376 | ||
4377 | while (obj_priv->pin_count > 0) | |
4378 | i915_gem_object_unpin(obj); | |
4379 | ||
4380 | if (obj_priv->phys_obj) | |
4381 | i915_gem_detach_phys_object(dev, obj); | |
4382 | ||
4383 | i915_gem_free_object_tail(obj); | |
4384 | } | |
4385 | ||
29105ccc CW |
4386 | int |
4387 | i915_gem_idle(struct drm_device *dev) | |
4388 | { | |
4389 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4390 | int ret; | |
28dfe52a | 4391 | |
29105ccc | 4392 | mutex_lock(&dev->struct_mutex); |
1c5d22f7 | 4393 | |
8187a2b7 | 4394 | if (dev_priv->mm.suspended || |
d1b851fc ZN |
4395 | (dev_priv->render_ring.gem_object == NULL) || |
4396 | (HAS_BSD(dev) && | |
4397 | dev_priv->bsd_ring.gem_object == NULL)) { | |
29105ccc CW |
4398 | mutex_unlock(&dev->struct_mutex); |
4399 | return 0; | |
28dfe52a EA |
4400 | } |
4401 | ||
29105ccc | 4402 | ret = i915_gpu_idle(dev); |
6dbe2772 KP |
4403 | if (ret) { |
4404 | mutex_unlock(&dev->struct_mutex); | |
673a394b | 4405 | return ret; |
6dbe2772 | 4406 | } |
673a394b | 4407 | |
29105ccc CW |
4408 | /* Under UMS, be paranoid and evict. */ |
4409 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) { | |
b47eb4a2 | 4410 | ret = i915_gem_evict_inactive(dev); |
29105ccc CW |
4411 | if (ret) { |
4412 | mutex_unlock(&dev->struct_mutex); | |
4413 | return ret; | |
4414 | } | |
4415 | } | |
4416 | ||
4417 | /* Hack! Don't let anybody do execbuf while we don't control the chip. | |
4418 | * We need to replace this with a semaphore, or something. | |
4419 | * And not confound mm.suspended! | |
4420 | */ | |
4421 | dev_priv->mm.suspended = 1; | |
4422 | del_timer(&dev_priv->hangcheck_timer); | |
4423 | ||
4424 | i915_kernel_lost_context(dev); | |
6dbe2772 | 4425 | i915_gem_cleanup_ringbuffer(dev); |
29105ccc | 4426 | |
6dbe2772 KP |
4427 | mutex_unlock(&dev->struct_mutex); |
4428 | ||
29105ccc CW |
4429 | /* Cancel the retire work handler, which should be idle now. */ |
4430 | cancel_delayed_work_sync(&dev_priv->mm.retire_work); | |
4431 | ||
673a394b EA |
4432 | return 0; |
4433 | } | |
4434 | ||
e552eb70 JB |
4435 | /* |
4436 | * 965+ support PIPE_CONTROL commands, which provide finer grained control | |
4437 | * over cache flushing. | |
4438 | */ | |
8187a2b7 | 4439 | static int |
e552eb70 JB |
4440 | i915_gem_init_pipe_control(struct drm_device *dev) |
4441 | { | |
4442 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4443 | struct drm_gem_object *obj; | |
4444 | struct drm_i915_gem_object *obj_priv; | |
4445 | int ret; | |
4446 | ||
34dc4d44 | 4447 | obj = i915_gem_alloc_object(dev, 4096); |
e552eb70 JB |
4448 | if (obj == NULL) { |
4449 | DRM_ERROR("Failed to allocate seqno page\n"); | |
4450 | ret = -ENOMEM; | |
4451 | goto err; | |
4452 | } | |
4453 | obj_priv = to_intel_bo(obj); | |
4454 | obj_priv->agp_type = AGP_USER_CACHED_MEMORY; | |
4455 | ||
4456 | ret = i915_gem_object_pin(obj, 4096); | |
4457 | if (ret) | |
4458 | goto err_unref; | |
4459 | ||
4460 | dev_priv->seqno_gfx_addr = obj_priv->gtt_offset; | |
4461 | dev_priv->seqno_page = kmap(obj_priv->pages[0]); | |
4462 | if (dev_priv->seqno_page == NULL) | |
4463 | goto err_unpin; | |
4464 | ||
4465 | dev_priv->seqno_obj = obj; | |
4466 | memset(dev_priv->seqno_page, 0, PAGE_SIZE); | |
4467 | ||
4468 | return 0; | |
4469 | ||
4470 | err_unpin: | |
4471 | i915_gem_object_unpin(obj); | |
4472 | err_unref: | |
4473 | drm_gem_object_unreference(obj); | |
4474 | err: | |
4475 | return ret; | |
4476 | } | |
4477 | ||
8187a2b7 ZN |
4478 | |
4479 | static void | |
e552eb70 JB |
4480 | i915_gem_cleanup_pipe_control(struct drm_device *dev) |
4481 | { | |
4482 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4483 | struct drm_gem_object *obj; | |
4484 | struct drm_i915_gem_object *obj_priv; | |
4485 | ||
4486 | obj = dev_priv->seqno_obj; | |
4487 | obj_priv = to_intel_bo(obj); | |
4488 | kunmap(obj_priv->pages[0]); | |
4489 | i915_gem_object_unpin(obj); | |
4490 | drm_gem_object_unreference(obj); | |
4491 | dev_priv->seqno_obj = NULL; | |
4492 | ||
4493 | dev_priv->seqno_page = NULL; | |
673a394b EA |
4494 | } |
4495 | ||
8187a2b7 ZN |
4496 | int |
4497 | i915_gem_init_ringbuffer(struct drm_device *dev) | |
4498 | { | |
4499 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4500 | int ret; | |
68f95ba9 | 4501 | |
8187a2b7 | 4502 | dev_priv->render_ring = render_ring; |
68f95ba9 | 4503 | |
8187a2b7 ZN |
4504 | if (!I915_NEED_GFX_HWS(dev)) { |
4505 | dev_priv->render_ring.status_page.page_addr | |
4506 | = dev_priv->status_page_dmah->vaddr; | |
4507 | memset(dev_priv->render_ring.status_page.page_addr, | |
4508 | 0, PAGE_SIZE); | |
4509 | } | |
68f95ba9 | 4510 | |
8187a2b7 ZN |
4511 | if (HAS_PIPE_CONTROL(dev)) { |
4512 | ret = i915_gem_init_pipe_control(dev); | |
4513 | if (ret) | |
4514 | return ret; | |
4515 | } | |
68f95ba9 | 4516 | |
8187a2b7 | 4517 | ret = intel_init_ring_buffer(dev, &dev_priv->render_ring); |
68f95ba9 CW |
4518 | if (ret) |
4519 | goto cleanup_pipe_control; | |
4520 | ||
4521 | if (HAS_BSD(dev)) { | |
d1b851fc ZN |
4522 | dev_priv->bsd_ring = bsd_ring; |
4523 | ret = intel_init_ring_buffer(dev, &dev_priv->bsd_ring); | |
68f95ba9 CW |
4524 | if (ret) |
4525 | goto cleanup_render_ring; | |
d1b851fc | 4526 | } |
68f95ba9 | 4527 | |
6f392d54 CW |
4528 | dev_priv->next_seqno = 1; |
4529 | ||
68f95ba9 CW |
4530 | return 0; |
4531 | ||
4532 | cleanup_render_ring: | |
4533 | intel_cleanup_ring_buffer(dev, &dev_priv->render_ring); | |
4534 | cleanup_pipe_control: | |
4535 | if (HAS_PIPE_CONTROL(dev)) | |
4536 | i915_gem_cleanup_pipe_control(dev); | |
8187a2b7 ZN |
4537 | return ret; |
4538 | } | |
4539 | ||
4540 | void | |
4541 | i915_gem_cleanup_ringbuffer(struct drm_device *dev) | |
4542 | { | |
4543 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4544 | ||
4545 | intel_cleanup_ring_buffer(dev, &dev_priv->render_ring); | |
d1b851fc ZN |
4546 | if (HAS_BSD(dev)) |
4547 | intel_cleanup_ring_buffer(dev, &dev_priv->bsd_ring); | |
8187a2b7 ZN |
4548 | if (HAS_PIPE_CONTROL(dev)) |
4549 | i915_gem_cleanup_pipe_control(dev); | |
4550 | } | |
4551 | ||
673a394b EA |
4552 | int |
4553 | i915_gem_entervt_ioctl(struct drm_device *dev, void *data, | |
4554 | struct drm_file *file_priv) | |
4555 | { | |
4556 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4557 | int ret; | |
4558 | ||
79e53945 JB |
4559 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
4560 | return 0; | |
4561 | ||
ba1234d1 | 4562 | if (atomic_read(&dev_priv->mm.wedged)) { |
673a394b | 4563 | DRM_ERROR("Reenabling wedged hardware, good luck\n"); |
ba1234d1 | 4564 | atomic_set(&dev_priv->mm.wedged, 0); |
673a394b EA |
4565 | } |
4566 | ||
673a394b | 4567 | mutex_lock(&dev->struct_mutex); |
9bb2d6f9 EA |
4568 | dev_priv->mm.suspended = 0; |
4569 | ||
4570 | ret = i915_gem_init_ringbuffer(dev); | |
d816f6ac WF |
4571 | if (ret != 0) { |
4572 | mutex_unlock(&dev->struct_mutex); | |
9bb2d6f9 | 4573 | return ret; |
d816f6ac | 4574 | } |
9bb2d6f9 | 4575 | |
5e118f41 | 4576 | spin_lock(&dev_priv->mm.active_list_lock); |
852835f3 | 4577 | BUG_ON(!list_empty(&dev_priv->render_ring.active_list)); |
d1b851fc | 4578 | BUG_ON(HAS_BSD(dev) && !list_empty(&dev_priv->bsd_ring.active_list)); |
5e118f41 CW |
4579 | spin_unlock(&dev_priv->mm.active_list_lock); |
4580 | ||
673a394b EA |
4581 | BUG_ON(!list_empty(&dev_priv->mm.flushing_list)); |
4582 | BUG_ON(!list_empty(&dev_priv->mm.inactive_list)); | |
852835f3 | 4583 | BUG_ON(!list_empty(&dev_priv->render_ring.request_list)); |
d1b851fc | 4584 | BUG_ON(HAS_BSD(dev) && !list_empty(&dev_priv->bsd_ring.request_list)); |
673a394b | 4585 | mutex_unlock(&dev->struct_mutex); |
dbb19d30 | 4586 | |
5f35308b CW |
4587 | ret = drm_irq_install(dev); |
4588 | if (ret) | |
4589 | goto cleanup_ringbuffer; | |
dbb19d30 | 4590 | |
673a394b | 4591 | return 0; |
5f35308b CW |
4592 | |
4593 | cleanup_ringbuffer: | |
4594 | mutex_lock(&dev->struct_mutex); | |
4595 | i915_gem_cleanup_ringbuffer(dev); | |
4596 | dev_priv->mm.suspended = 1; | |
4597 | mutex_unlock(&dev->struct_mutex); | |
4598 | ||
4599 | return ret; | |
673a394b EA |
4600 | } |
4601 | ||
4602 | int | |
4603 | i915_gem_leavevt_ioctl(struct drm_device *dev, void *data, | |
4604 | struct drm_file *file_priv) | |
4605 | { | |
79e53945 JB |
4606 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
4607 | return 0; | |
4608 | ||
dbb19d30 | 4609 | drm_irq_uninstall(dev); |
e6890f6f | 4610 | return i915_gem_idle(dev); |
673a394b EA |
4611 | } |
4612 | ||
4613 | void | |
4614 | i915_gem_lastclose(struct drm_device *dev) | |
4615 | { | |
4616 | int ret; | |
673a394b | 4617 | |
e806b495 EA |
4618 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
4619 | return; | |
4620 | ||
6dbe2772 KP |
4621 | ret = i915_gem_idle(dev); |
4622 | if (ret) | |
4623 | DRM_ERROR("failed to idle hardware: %d\n", ret); | |
673a394b EA |
4624 | } |
4625 | ||
4626 | void | |
4627 | i915_gem_load(struct drm_device *dev) | |
4628 | { | |
b5aa8a0f | 4629 | int i; |
673a394b EA |
4630 | drm_i915_private_t *dev_priv = dev->dev_private; |
4631 | ||
5e118f41 | 4632 | spin_lock_init(&dev_priv->mm.active_list_lock); |
673a394b | 4633 | INIT_LIST_HEAD(&dev_priv->mm.flushing_list); |
99fcb766 | 4634 | INIT_LIST_HEAD(&dev_priv->mm.gpu_write_list); |
673a394b | 4635 | INIT_LIST_HEAD(&dev_priv->mm.inactive_list); |
a09ba7fa | 4636 | INIT_LIST_HEAD(&dev_priv->mm.fence_list); |
be72615b | 4637 | INIT_LIST_HEAD(&dev_priv->mm.deferred_free_list); |
852835f3 ZN |
4638 | INIT_LIST_HEAD(&dev_priv->render_ring.active_list); |
4639 | INIT_LIST_HEAD(&dev_priv->render_ring.request_list); | |
d1b851fc ZN |
4640 | if (HAS_BSD(dev)) { |
4641 | INIT_LIST_HEAD(&dev_priv->bsd_ring.active_list); | |
4642 | INIT_LIST_HEAD(&dev_priv->bsd_ring.request_list); | |
4643 | } | |
007cc8ac DV |
4644 | for (i = 0; i < 16; i++) |
4645 | INIT_LIST_HEAD(&dev_priv->fence_regs[i].lru_list); | |
673a394b EA |
4646 | INIT_DELAYED_WORK(&dev_priv->mm.retire_work, |
4647 | i915_gem_retire_work_handler); | |
31169714 CW |
4648 | spin_lock(&shrink_list_lock); |
4649 | list_add(&dev_priv->mm.shrink_list, &shrink_list); | |
4650 | spin_unlock(&shrink_list_lock); | |
4651 | ||
94400120 DA |
4652 | /* On GEN3 we really need to make sure the ARB C3 LP bit is set */ |
4653 | if (IS_GEN3(dev)) { | |
4654 | u32 tmp = I915_READ(MI_ARB_STATE); | |
4655 | if (!(tmp & MI_ARB_C3_LP_WRITE_ENABLE)) { | |
4656 | /* arb state is a masked write, so set bit + bit in mask */ | |
4657 | tmp = MI_ARB_C3_LP_WRITE_ENABLE | (MI_ARB_C3_LP_WRITE_ENABLE << MI_ARB_MASK_SHIFT); | |
4658 | I915_WRITE(MI_ARB_STATE, tmp); | |
4659 | } | |
4660 | } | |
4661 | ||
de151cf6 | 4662 | /* Old X drivers will take 0-2 for front, back, depth buffers */ |
b397c836 EA |
4663 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
4664 | dev_priv->fence_reg_start = 3; | |
de151cf6 | 4665 | |
0f973f27 | 4666 | if (IS_I965G(dev) || IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) |
de151cf6 JB |
4667 | dev_priv->num_fence_regs = 16; |
4668 | else | |
4669 | dev_priv->num_fence_regs = 8; | |
4670 | ||
b5aa8a0f GH |
4671 | /* Initialize fence registers to zero */ |
4672 | if (IS_I965G(dev)) { | |
4673 | for (i = 0; i < 16; i++) | |
4674 | I915_WRITE64(FENCE_REG_965_0 + (i * 8), 0); | |
4675 | } else { | |
4676 | for (i = 0; i < 8; i++) | |
4677 | I915_WRITE(FENCE_REG_830_0 + (i * 4), 0); | |
4678 | if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) | |
4679 | for (i = 0; i < 8; i++) | |
4680 | I915_WRITE(FENCE_REG_945_8 + (i * 4), 0); | |
4681 | } | |
673a394b | 4682 | i915_gem_detect_bit_6_swizzle(dev); |
6b95a207 | 4683 | init_waitqueue_head(&dev_priv->pending_flip_queue); |
673a394b | 4684 | } |
71acb5eb DA |
4685 | |
4686 | /* | |
4687 | * Create a physically contiguous memory object for this object | |
4688 | * e.g. for cursor + overlay regs | |
4689 | */ | |
4690 | int i915_gem_init_phys_object(struct drm_device *dev, | |
6eeefaf3 | 4691 | int id, int size, int align) |
71acb5eb DA |
4692 | { |
4693 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4694 | struct drm_i915_gem_phys_object *phys_obj; | |
4695 | int ret; | |
4696 | ||
4697 | if (dev_priv->mm.phys_objs[id - 1] || !size) | |
4698 | return 0; | |
4699 | ||
9a298b2a | 4700 | phys_obj = kzalloc(sizeof(struct drm_i915_gem_phys_object), GFP_KERNEL); |
71acb5eb DA |
4701 | if (!phys_obj) |
4702 | return -ENOMEM; | |
4703 | ||
4704 | phys_obj->id = id; | |
4705 | ||
6eeefaf3 | 4706 | phys_obj->handle = drm_pci_alloc(dev, size, align); |
71acb5eb DA |
4707 | if (!phys_obj->handle) { |
4708 | ret = -ENOMEM; | |
4709 | goto kfree_obj; | |
4710 | } | |
4711 | #ifdef CONFIG_X86 | |
4712 | set_memory_wc((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); | |
4713 | #endif | |
4714 | ||
4715 | dev_priv->mm.phys_objs[id - 1] = phys_obj; | |
4716 | ||
4717 | return 0; | |
4718 | kfree_obj: | |
9a298b2a | 4719 | kfree(phys_obj); |
71acb5eb DA |
4720 | return ret; |
4721 | } | |
4722 | ||
4723 | void i915_gem_free_phys_object(struct drm_device *dev, int id) | |
4724 | { | |
4725 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4726 | struct drm_i915_gem_phys_object *phys_obj; | |
4727 | ||
4728 | if (!dev_priv->mm.phys_objs[id - 1]) | |
4729 | return; | |
4730 | ||
4731 | phys_obj = dev_priv->mm.phys_objs[id - 1]; | |
4732 | if (phys_obj->cur_obj) { | |
4733 | i915_gem_detach_phys_object(dev, phys_obj->cur_obj); | |
4734 | } | |
4735 | ||
4736 | #ifdef CONFIG_X86 | |
4737 | set_memory_wb((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); | |
4738 | #endif | |
4739 | drm_pci_free(dev, phys_obj->handle); | |
4740 | kfree(phys_obj); | |
4741 | dev_priv->mm.phys_objs[id - 1] = NULL; | |
4742 | } | |
4743 | ||
4744 | void i915_gem_free_all_phys_object(struct drm_device *dev) | |
4745 | { | |
4746 | int i; | |
4747 | ||
260883c8 | 4748 | for (i = I915_GEM_PHYS_CURSOR_0; i <= I915_MAX_PHYS_OBJECT; i++) |
71acb5eb DA |
4749 | i915_gem_free_phys_object(dev, i); |
4750 | } | |
4751 | ||
4752 | void i915_gem_detach_phys_object(struct drm_device *dev, | |
4753 | struct drm_gem_object *obj) | |
4754 | { | |
4755 | struct drm_i915_gem_object *obj_priv; | |
4756 | int i; | |
4757 | int ret; | |
4758 | int page_count; | |
4759 | ||
23010e43 | 4760 | obj_priv = to_intel_bo(obj); |
71acb5eb DA |
4761 | if (!obj_priv->phys_obj) |
4762 | return; | |
4763 | ||
4bdadb97 | 4764 | ret = i915_gem_object_get_pages(obj, 0); |
71acb5eb DA |
4765 | if (ret) |
4766 | goto out; | |
4767 | ||
4768 | page_count = obj->size / PAGE_SIZE; | |
4769 | ||
4770 | for (i = 0; i < page_count; i++) { | |
856fa198 | 4771 | char *dst = kmap_atomic(obj_priv->pages[i], KM_USER0); |
71acb5eb DA |
4772 | char *src = obj_priv->phys_obj->handle->vaddr + (i * PAGE_SIZE); |
4773 | ||
4774 | memcpy(dst, src, PAGE_SIZE); | |
4775 | kunmap_atomic(dst, KM_USER0); | |
4776 | } | |
856fa198 | 4777 | drm_clflush_pages(obj_priv->pages, page_count); |
71acb5eb | 4778 | drm_agp_chipset_flush(dev); |
d78b47b9 CW |
4779 | |
4780 | i915_gem_object_put_pages(obj); | |
71acb5eb DA |
4781 | out: |
4782 | obj_priv->phys_obj->cur_obj = NULL; | |
4783 | obj_priv->phys_obj = NULL; | |
4784 | } | |
4785 | ||
4786 | int | |
4787 | i915_gem_attach_phys_object(struct drm_device *dev, | |
6eeefaf3 CW |
4788 | struct drm_gem_object *obj, |
4789 | int id, | |
4790 | int align) | |
71acb5eb DA |
4791 | { |
4792 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4793 | struct drm_i915_gem_object *obj_priv; | |
4794 | int ret = 0; | |
4795 | int page_count; | |
4796 | int i; | |
4797 | ||
4798 | if (id > I915_MAX_PHYS_OBJECT) | |
4799 | return -EINVAL; | |
4800 | ||
23010e43 | 4801 | obj_priv = to_intel_bo(obj); |
71acb5eb DA |
4802 | |
4803 | if (obj_priv->phys_obj) { | |
4804 | if (obj_priv->phys_obj->id == id) | |
4805 | return 0; | |
4806 | i915_gem_detach_phys_object(dev, obj); | |
4807 | } | |
4808 | ||
71acb5eb DA |
4809 | /* create a new object */ |
4810 | if (!dev_priv->mm.phys_objs[id - 1]) { | |
4811 | ret = i915_gem_init_phys_object(dev, id, | |
6eeefaf3 | 4812 | obj->size, align); |
71acb5eb | 4813 | if (ret) { |
aeb565df | 4814 | DRM_ERROR("failed to init phys object %d size: %zu\n", id, obj->size); |
71acb5eb DA |
4815 | goto out; |
4816 | } | |
4817 | } | |
4818 | ||
4819 | /* bind to the object */ | |
4820 | obj_priv->phys_obj = dev_priv->mm.phys_objs[id - 1]; | |
4821 | obj_priv->phys_obj->cur_obj = obj; | |
4822 | ||
4bdadb97 | 4823 | ret = i915_gem_object_get_pages(obj, 0); |
71acb5eb DA |
4824 | if (ret) { |
4825 | DRM_ERROR("failed to get page list\n"); | |
4826 | goto out; | |
4827 | } | |
4828 | ||
4829 | page_count = obj->size / PAGE_SIZE; | |
4830 | ||
4831 | for (i = 0; i < page_count; i++) { | |
856fa198 | 4832 | char *src = kmap_atomic(obj_priv->pages[i], KM_USER0); |
71acb5eb DA |
4833 | char *dst = obj_priv->phys_obj->handle->vaddr + (i * PAGE_SIZE); |
4834 | ||
4835 | memcpy(dst, src, PAGE_SIZE); | |
4836 | kunmap_atomic(src, KM_USER0); | |
4837 | } | |
4838 | ||
d78b47b9 CW |
4839 | i915_gem_object_put_pages(obj); |
4840 | ||
71acb5eb DA |
4841 | return 0; |
4842 | out: | |
4843 | return ret; | |
4844 | } | |
4845 | ||
4846 | static int | |
4847 | i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj, | |
4848 | struct drm_i915_gem_pwrite *args, | |
4849 | struct drm_file *file_priv) | |
4850 | { | |
23010e43 | 4851 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
71acb5eb DA |
4852 | void *obj_addr; |
4853 | int ret; | |
4854 | char __user *user_data; | |
4855 | ||
4856 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
4857 | obj_addr = obj_priv->phys_obj->handle->vaddr + args->offset; | |
4858 | ||
44d98a61 | 4859 | DRM_DEBUG_DRIVER("obj_addr %p, %lld\n", obj_addr, args->size); |
71acb5eb DA |
4860 | ret = copy_from_user(obj_addr, user_data, args->size); |
4861 | if (ret) | |
4862 | return -EFAULT; | |
4863 | ||
4864 | drm_agp_chipset_flush(dev); | |
4865 | return 0; | |
4866 | } | |
b962442e EA |
4867 | |
4868 | void i915_gem_release(struct drm_device * dev, struct drm_file *file_priv) | |
4869 | { | |
4870 | struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; | |
4871 | ||
4872 | /* Clean up our request list when the client is going away, so that | |
4873 | * later retire_requests won't dereference our soon-to-be-gone | |
4874 | * file_priv. | |
4875 | */ | |
4876 | mutex_lock(&dev->struct_mutex); | |
4877 | while (!list_empty(&i915_file_priv->mm.request_list)) | |
4878 | list_del_init(i915_file_priv->mm.request_list.next); | |
4879 | mutex_unlock(&dev->struct_mutex); | |
4880 | } | |
31169714 | 4881 | |
1637ef41 CW |
4882 | static int |
4883 | i915_gpu_is_active(struct drm_device *dev) | |
4884 | { | |
4885 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4886 | int lists_empty; | |
4887 | ||
4888 | spin_lock(&dev_priv->mm.active_list_lock); | |
4889 | lists_empty = list_empty(&dev_priv->mm.flushing_list) && | |
852835f3 | 4890 | list_empty(&dev_priv->render_ring.active_list); |
d1b851fc ZN |
4891 | if (HAS_BSD(dev)) |
4892 | lists_empty &= list_empty(&dev_priv->bsd_ring.active_list); | |
1637ef41 CW |
4893 | spin_unlock(&dev_priv->mm.active_list_lock); |
4894 | ||
4895 | return !lists_empty; | |
4896 | } | |
4897 | ||
31169714 | 4898 | static int |
7f8275d0 | 4899 | i915_gem_shrink(struct shrinker *shrink, int nr_to_scan, gfp_t gfp_mask) |
31169714 CW |
4900 | { |
4901 | drm_i915_private_t *dev_priv, *next_dev; | |
4902 | struct drm_i915_gem_object *obj_priv, *next_obj; | |
4903 | int cnt = 0; | |
4904 | int would_deadlock = 1; | |
4905 | ||
4906 | /* "fast-path" to count number of available objects */ | |
4907 | if (nr_to_scan == 0) { | |
4908 | spin_lock(&shrink_list_lock); | |
4909 | list_for_each_entry(dev_priv, &shrink_list, mm.shrink_list) { | |
4910 | struct drm_device *dev = dev_priv->dev; | |
4911 | ||
4912 | if (mutex_trylock(&dev->struct_mutex)) { | |
4913 | list_for_each_entry(obj_priv, | |
4914 | &dev_priv->mm.inactive_list, | |
4915 | list) | |
4916 | cnt++; | |
4917 | mutex_unlock(&dev->struct_mutex); | |
4918 | } | |
4919 | } | |
4920 | spin_unlock(&shrink_list_lock); | |
4921 | ||
4922 | return (cnt / 100) * sysctl_vfs_cache_pressure; | |
4923 | } | |
4924 | ||
4925 | spin_lock(&shrink_list_lock); | |
4926 | ||
1637ef41 | 4927 | rescan: |
31169714 CW |
4928 | /* first scan for clean buffers */ |
4929 | list_for_each_entry_safe(dev_priv, next_dev, | |
4930 | &shrink_list, mm.shrink_list) { | |
4931 | struct drm_device *dev = dev_priv->dev; | |
4932 | ||
4933 | if (! mutex_trylock(&dev->struct_mutex)) | |
4934 | continue; | |
4935 | ||
4936 | spin_unlock(&shrink_list_lock); | |
b09a1fec | 4937 | i915_gem_retire_requests(dev); |
31169714 CW |
4938 | |
4939 | list_for_each_entry_safe(obj_priv, next_obj, | |
4940 | &dev_priv->mm.inactive_list, | |
4941 | list) { | |
4942 | if (i915_gem_object_is_purgeable(obj_priv)) { | |
a8089e84 | 4943 | i915_gem_object_unbind(&obj_priv->base); |
31169714 CW |
4944 | if (--nr_to_scan <= 0) |
4945 | break; | |
4946 | } | |
4947 | } | |
4948 | ||
4949 | spin_lock(&shrink_list_lock); | |
4950 | mutex_unlock(&dev->struct_mutex); | |
4951 | ||
963b4836 CW |
4952 | would_deadlock = 0; |
4953 | ||
31169714 CW |
4954 | if (nr_to_scan <= 0) |
4955 | break; | |
4956 | } | |
4957 | ||
4958 | /* second pass, evict/count anything still on the inactive list */ | |
4959 | list_for_each_entry_safe(dev_priv, next_dev, | |
4960 | &shrink_list, mm.shrink_list) { | |
4961 | struct drm_device *dev = dev_priv->dev; | |
4962 | ||
4963 | if (! mutex_trylock(&dev->struct_mutex)) | |
4964 | continue; | |
4965 | ||
4966 | spin_unlock(&shrink_list_lock); | |
4967 | ||
4968 | list_for_each_entry_safe(obj_priv, next_obj, | |
4969 | &dev_priv->mm.inactive_list, | |
4970 | list) { | |
4971 | if (nr_to_scan > 0) { | |
a8089e84 | 4972 | i915_gem_object_unbind(&obj_priv->base); |
31169714 CW |
4973 | nr_to_scan--; |
4974 | } else | |
4975 | cnt++; | |
4976 | } | |
4977 | ||
4978 | spin_lock(&shrink_list_lock); | |
4979 | mutex_unlock(&dev->struct_mutex); | |
4980 | ||
4981 | would_deadlock = 0; | |
4982 | } | |
4983 | ||
1637ef41 CW |
4984 | if (nr_to_scan) { |
4985 | int active = 0; | |
4986 | ||
4987 | /* | |
4988 | * We are desperate for pages, so as a last resort, wait | |
4989 | * for the GPU to finish and discard whatever we can. | |
4990 | * This has a dramatic impact to reduce the number of | |
4991 | * OOM-killer events whilst running the GPU aggressively. | |
4992 | */ | |
4993 | list_for_each_entry(dev_priv, &shrink_list, mm.shrink_list) { | |
4994 | struct drm_device *dev = dev_priv->dev; | |
4995 | ||
4996 | if (!mutex_trylock(&dev->struct_mutex)) | |
4997 | continue; | |
4998 | ||
4999 | spin_unlock(&shrink_list_lock); | |
5000 | ||
5001 | if (i915_gpu_is_active(dev)) { | |
5002 | i915_gpu_idle(dev); | |
5003 | active++; | |
5004 | } | |
5005 | ||
5006 | spin_lock(&shrink_list_lock); | |
5007 | mutex_unlock(&dev->struct_mutex); | |
5008 | } | |
5009 | ||
5010 | if (active) | |
5011 | goto rescan; | |
5012 | } | |
5013 | ||
31169714 CW |
5014 | spin_unlock(&shrink_list_lock); |
5015 | ||
5016 | if (would_deadlock) | |
5017 | return -1; | |
5018 | else if (cnt > 0) | |
5019 | return (cnt / 100) * sysctl_vfs_cache_pressure; | |
5020 | else | |
5021 | return 0; | |
5022 | } | |
5023 | ||
5024 | static struct shrinker shrinker = { | |
5025 | .shrink = i915_gem_shrink, | |
5026 | .seeks = DEFAULT_SEEKS, | |
5027 | }; | |
5028 | ||
5029 | __init void | |
5030 | i915_gem_shrinker_init(void) | |
5031 | { | |
5032 | register_shrinker(&shrinker); | |
5033 | } | |
5034 | ||
5035 | __exit void | |
5036 | i915_gem_shrinker_exit(void) | |
5037 | { | |
5038 | unregister_shrinker(&shrinker); | |
5039 | } |