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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); |
ba3d8d74 DV |
40 | |
41 | static int i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj, | |
42 | bool pipelined); | |
e47c68e9 EA |
43 | static void i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj); |
44 | static void i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj); | |
e47c68e9 EA |
45 | static int i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, |
46 | int write); | |
47 | static int i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj, | |
48 | uint64_t offset, | |
49 | uint64_t size); | |
50 | static void i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj); | |
2cf34d7b CW |
51 | static int i915_gem_object_wait_rendering(struct drm_gem_object *obj, |
52 | bool interruptible); | |
de151cf6 JB |
53 | static int i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, |
54 | unsigned alignment); | |
de151cf6 | 55 | static void i915_gem_clear_fence_reg(struct drm_gem_object *obj); |
71acb5eb DA |
56 | static int i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj, |
57 | struct drm_i915_gem_pwrite *args, | |
58 | struct drm_file *file_priv); | |
be72615b | 59 | static void i915_gem_free_object_tail(struct drm_gem_object *obj); |
673a394b | 60 | |
5cdf5881 CW |
61 | static int |
62 | i915_gem_object_get_pages(struct drm_gem_object *obj, | |
63 | gfp_t gfpmask); | |
64 | ||
65 | static void | |
66 | i915_gem_object_put_pages(struct drm_gem_object *obj); | |
67 | ||
31169714 CW |
68 | static LIST_HEAD(shrink_list); |
69 | static DEFINE_SPINLOCK(shrink_list_lock); | |
70 | ||
73aa808f CW |
71 | /* some bookkeeping */ |
72 | static void i915_gem_info_add_obj(struct drm_i915_private *dev_priv, | |
73 | size_t size) | |
74 | { | |
75 | dev_priv->mm.object_count++; | |
76 | dev_priv->mm.object_memory += size; | |
77 | } | |
78 | ||
79 | static void i915_gem_info_remove_obj(struct drm_i915_private *dev_priv, | |
80 | size_t size) | |
81 | { | |
82 | dev_priv->mm.object_count--; | |
83 | dev_priv->mm.object_memory -= size; | |
84 | } | |
85 | ||
86 | static void i915_gem_info_add_gtt(struct drm_i915_private *dev_priv, | |
87 | size_t size) | |
88 | { | |
89 | dev_priv->mm.gtt_count++; | |
90 | dev_priv->mm.gtt_memory += size; | |
91 | } | |
92 | ||
93 | static void i915_gem_info_remove_gtt(struct drm_i915_private *dev_priv, | |
94 | size_t size) | |
95 | { | |
96 | dev_priv->mm.gtt_count--; | |
97 | dev_priv->mm.gtt_memory -= size; | |
98 | } | |
99 | ||
100 | static void i915_gem_info_add_pin(struct drm_i915_private *dev_priv, | |
101 | size_t size) | |
102 | { | |
103 | dev_priv->mm.pin_count++; | |
104 | dev_priv->mm.pin_memory += size; | |
105 | } | |
106 | ||
107 | static void i915_gem_info_remove_pin(struct drm_i915_private *dev_priv, | |
108 | size_t size) | |
109 | { | |
110 | dev_priv->mm.pin_count--; | |
111 | dev_priv->mm.pin_memory -= size; | |
112 | } | |
113 | ||
30dbf0c0 CW |
114 | int |
115 | i915_gem_check_is_wedged(struct drm_device *dev) | |
116 | { | |
117 | struct drm_i915_private *dev_priv = dev->dev_private; | |
118 | struct completion *x = &dev_priv->error_completion; | |
119 | unsigned long flags; | |
120 | int ret; | |
121 | ||
122 | if (!atomic_read(&dev_priv->mm.wedged)) | |
123 | return 0; | |
124 | ||
125 | ret = wait_for_completion_interruptible(x); | |
126 | if (ret) | |
127 | return ret; | |
128 | ||
129 | /* Success, we reset the GPU! */ | |
130 | if (!atomic_read(&dev_priv->mm.wedged)) | |
131 | return 0; | |
132 | ||
133 | /* GPU is hung, bump the completion count to account for | |
134 | * the token we just consumed so that we never hit zero and | |
135 | * end up waiting upon a subsequent completion event that | |
136 | * will never happen. | |
137 | */ | |
138 | spin_lock_irqsave(&x->wait.lock, flags); | |
139 | x->done++; | |
140 | spin_unlock_irqrestore(&x->wait.lock, flags); | |
141 | return -EIO; | |
142 | } | |
143 | ||
76c1dec1 CW |
144 | static int i915_mutex_lock_interruptible(struct drm_device *dev) |
145 | { | |
146 | struct drm_i915_private *dev_priv = dev->dev_private; | |
147 | int ret; | |
148 | ||
149 | ret = i915_gem_check_is_wedged(dev); | |
150 | if (ret) | |
151 | return ret; | |
152 | ||
153 | ret = mutex_lock_interruptible(&dev->struct_mutex); | |
154 | if (ret) | |
155 | return ret; | |
156 | ||
157 | if (atomic_read(&dev_priv->mm.wedged)) { | |
158 | mutex_unlock(&dev->struct_mutex); | |
159 | return -EAGAIN; | |
160 | } | |
161 | ||
23bc5982 | 162 | WARN_ON(i915_verify_lists(dev)); |
76c1dec1 CW |
163 | return 0; |
164 | } | |
30dbf0c0 | 165 | |
7d1c4804 CW |
166 | static inline bool |
167 | i915_gem_object_is_inactive(struct drm_i915_gem_object *obj_priv) | |
168 | { | |
169 | return obj_priv->gtt_space && | |
170 | !obj_priv->active && | |
171 | obj_priv->pin_count == 0; | |
172 | } | |
173 | ||
73aa808f CW |
174 | int i915_gem_do_init(struct drm_device *dev, |
175 | unsigned long start, | |
79e53945 | 176 | unsigned long end) |
673a394b EA |
177 | { |
178 | drm_i915_private_t *dev_priv = dev->dev_private; | |
673a394b | 179 | |
79e53945 JB |
180 | if (start >= end || |
181 | (start & (PAGE_SIZE - 1)) != 0 || | |
182 | (end & (PAGE_SIZE - 1)) != 0) { | |
673a394b EA |
183 | return -EINVAL; |
184 | } | |
185 | ||
79e53945 JB |
186 | drm_mm_init(&dev_priv->mm.gtt_space, start, |
187 | end - start); | |
673a394b | 188 | |
73aa808f | 189 | dev_priv->mm.gtt_total = end - start; |
a6e0aa42 | 190 | dev_priv->mm.gtt_mappable_end = end; |
79e53945 JB |
191 | |
192 | return 0; | |
193 | } | |
673a394b | 194 | |
79e53945 JB |
195 | int |
196 | i915_gem_init_ioctl(struct drm_device *dev, void *data, | |
197 | struct drm_file *file_priv) | |
198 | { | |
199 | struct drm_i915_gem_init *args = data; | |
200 | int ret; | |
201 | ||
202 | mutex_lock(&dev->struct_mutex); | |
203 | ret = i915_gem_do_init(dev, args->gtt_start, args->gtt_end); | |
673a394b EA |
204 | mutex_unlock(&dev->struct_mutex); |
205 | ||
79e53945 | 206 | return ret; |
673a394b EA |
207 | } |
208 | ||
5a125c3c EA |
209 | int |
210 | i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data, | |
211 | struct drm_file *file_priv) | |
212 | { | |
73aa808f | 213 | struct drm_i915_private *dev_priv = dev->dev_private; |
5a125c3c | 214 | struct drm_i915_gem_get_aperture *args = data; |
5a125c3c EA |
215 | |
216 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
217 | return -ENODEV; | |
218 | ||
73aa808f CW |
219 | mutex_lock(&dev->struct_mutex); |
220 | args->aper_size = dev_priv->mm.gtt_total; | |
221 | args->aper_available_size = args->aper_size - dev_priv->mm.pin_memory; | |
222 | mutex_unlock(&dev->struct_mutex); | |
5a125c3c EA |
223 | |
224 | return 0; | |
225 | } | |
226 | ||
673a394b EA |
227 | |
228 | /** | |
229 | * Creates a new mm object and returns a handle to it. | |
230 | */ | |
231 | int | |
232 | i915_gem_create_ioctl(struct drm_device *dev, void *data, | |
233 | struct drm_file *file_priv) | |
234 | { | |
235 | struct drm_i915_gem_create *args = data; | |
236 | struct drm_gem_object *obj; | |
a1a2d1d3 PP |
237 | int ret; |
238 | u32 handle; | |
673a394b EA |
239 | |
240 | args->size = roundup(args->size, PAGE_SIZE); | |
241 | ||
242 | /* Allocate the new object */ | |
ac52bc56 | 243 | obj = i915_gem_alloc_object(dev, args->size); |
673a394b EA |
244 | if (obj == NULL) |
245 | return -ENOMEM; | |
246 | ||
247 | ret = drm_gem_handle_create(file_priv, obj, &handle); | |
1dfd9754 | 248 | if (ret) { |
202f2fef CW |
249 | drm_gem_object_release(obj); |
250 | i915_gem_info_remove_obj(dev->dev_private, obj->size); | |
251 | kfree(obj); | |
673a394b | 252 | return ret; |
1dfd9754 | 253 | } |
673a394b | 254 | |
202f2fef CW |
255 | /* drop reference from allocate - handle holds it now */ |
256 | drm_gem_object_unreference(obj); | |
257 | trace_i915_gem_object_create(obj); | |
258 | ||
1dfd9754 | 259 | args->handle = handle; |
673a394b EA |
260 | return 0; |
261 | } | |
262 | ||
eb01459f EA |
263 | static inline int |
264 | fast_shmem_read(struct page **pages, | |
265 | loff_t page_base, int page_offset, | |
266 | char __user *data, | |
267 | int length) | |
268 | { | |
b5e4feb6 | 269 | char *vaddr; |
4f27b75d | 270 | int ret; |
eb01459f | 271 | |
3e4d3af5 | 272 | vaddr = kmap_atomic(pages[page_base >> PAGE_SHIFT]); |
4f27b75d | 273 | ret = __copy_to_user_inatomic(data, vaddr + page_offset, length); |
3e4d3af5 | 274 | kunmap_atomic(vaddr); |
eb01459f | 275 | |
4f27b75d | 276 | return ret; |
eb01459f EA |
277 | } |
278 | ||
280b713b EA |
279 | static int i915_gem_object_needs_bit17_swizzle(struct drm_gem_object *obj) |
280 | { | |
281 | drm_i915_private_t *dev_priv = obj->dev->dev_private; | |
23010e43 | 282 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
280b713b EA |
283 | |
284 | return dev_priv->mm.bit_6_swizzle_x == I915_BIT_6_SWIZZLE_9_10_17 && | |
285 | obj_priv->tiling_mode != I915_TILING_NONE; | |
286 | } | |
287 | ||
99a03df5 | 288 | static inline void |
40123c1f EA |
289 | slow_shmem_copy(struct page *dst_page, |
290 | int dst_offset, | |
291 | struct page *src_page, | |
292 | int src_offset, | |
293 | int length) | |
294 | { | |
295 | char *dst_vaddr, *src_vaddr; | |
296 | ||
99a03df5 CW |
297 | dst_vaddr = kmap(dst_page); |
298 | src_vaddr = kmap(src_page); | |
40123c1f EA |
299 | |
300 | memcpy(dst_vaddr + dst_offset, src_vaddr + src_offset, length); | |
301 | ||
99a03df5 CW |
302 | kunmap(src_page); |
303 | kunmap(dst_page); | |
40123c1f EA |
304 | } |
305 | ||
99a03df5 | 306 | static inline void |
280b713b EA |
307 | slow_shmem_bit17_copy(struct page *gpu_page, |
308 | int gpu_offset, | |
309 | struct page *cpu_page, | |
310 | int cpu_offset, | |
311 | int length, | |
312 | int is_read) | |
313 | { | |
314 | char *gpu_vaddr, *cpu_vaddr; | |
315 | ||
316 | /* Use the unswizzled path if this page isn't affected. */ | |
317 | if ((page_to_phys(gpu_page) & (1 << 17)) == 0) { | |
318 | if (is_read) | |
319 | return slow_shmem_copy(cpu_page, cpu_offset, | |
320 | gpu_page, gpu_offset, length); | |
321 | else | |
322 | return slow_shmem_copy(gpu_page, gpu_offset, | |
323 | cpu_page, cpu_offset, length); | |
324 | } | |
325 | ||
99a03df5 CW |
326 | gpu_vaddr = kmap(gpu_page); |
327 | cpu_vaddr = kmap(cpu_page); | |
280b713b EA |
328 | |
329 | /* Copy the data, XORing A6 with A17 (1). The user already knows he's | |
330 | * XORing with the other bits (A9 for Y, A9 and A10 for X) | |
331 | */ | |
332 | while (length > 0) { | |
333 | int cacheline_end = ALIGN(gpu_offset + 1, 64); | |
334 | int this_length = min(cacheline_end - gpu_offset, length); | |
335 | int swizzled_gpu_offset = gpu_offset ^ 64; | |
336 | ||
337 | if (is_read) { | |
338 | memcpy(cpu_vaddr + cpu_offset, | |
339 | gpu_vaddr + swizzled_gpu_offset, | |
340 | this_length); | |
341 | } else { | |
342 | memcpy(gpu_vaddr + swizzled_gpu_offset, | |
343 | cpu_vaddr + cpu_offset, | |
344 | this_length); | |
345 | } | |
346 | cpu_offset += this_length; | |
347 | gpu_offset += this_length; | |
348 | length -= this_length; | |
349 | } | |
350 | ||
99a03df5 CW |
351 | kunmap(cpu_page); |
352 | kunmap(gpu_page); | |
280b713b EA |
353 | } |
354 | ||
eb01459f EA |
355 | /** |
356 | * This is the fast shmem pread path, which attempts to copy_from_user directly | |
357 | * from the backing pages of the object to the user's address space. On a | |
358 | * fault, it fails so we can fall back to i915_gem_shmem_pwrite_slow(). | |
359 | */ | |
360 | static int | |
361 | i915_gem_shmem_pread_fast(struct drm_device *dev, struct drm_gem_object *obj, | |
362 | struct drm_i915_gem_pread *args, | |
363 | struct drm_file *file_priv) | |
364 | { | |
23010e43 | 365 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
eb01459f EA |
366 | ssize_t remain; |
367 | loff_t offset, page_base; | |
368 | char __user *user_data; | |
369 | int page_offset, page_length; | |
eb01459f EA |
370 | |
371 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
372 | remain = args->size; | |
373 | ||
23010e43 | 374 | obj_priv = to_intel_bo(obj); |
eb01459f EA |
375 | offset = args->offset; |
376 | ||
377 | while (remain > 0) { | |
378 | /* Operation in this page | |
379 | * | |
380 | * page_base = page offset within aperture | |
381 | * page_offset = offset within page | |
382 | * page_length = bytes to copy for this page | |
383 | */ | |
384 | page_base = (offset & ~(PAGE_SIZE-1)); | |
385 | page_offset = offset & (PAGE_SIZE-1); | |
386 | page_length = remain; | |
387 | if ((page_offset + remain) > PAGE_SIZE) | |
388 | page_length = PAGE_SIZE - page_offset; | |
389 | ||
4f27b75d CW |
390 | if (fast_shmem_read(obj_priv->pages, |
391 | page_base, page_offset, | |
392 | user_data, page_length)) | |
393 | return -EFAULT; | |
eb01459f EA |
394 | |
395 | remain -= page_length; | |
396 | user_data += page_length; | |
397 | offset += page_length; | |
398 | } | |
399 | ||
4f27b75d | 400 | return 0; |
eb01459f EA |
401 | } |
402 | ||
07f73f69 CW |
403 | static int |
404 | i915_gem_object_get_pages_or_evict(struct drm_gem_object *obj) | |
405 | { | |
406 | int ret; | |
407 | ||
4bdadb97 | 408 | ret = i915_gem_object_get_pages(obj, __GFP_NORETRY | __GFP_NOWARN); |
07f73f69 CW |
409 | |
410 | /* If we've insufficient memory to map in the pages, attempt | |
411 | * to make some space by throwing out some old buffers. | |
412 | */ | |
413 | if (ret == -ENOMEM) { | |
414 | struct drm_device *dev = obj->dev; | |
07f73f69 | 415 | |
0108a3ed | 416 | ret = i915_gem_evict_something(dev, obj->size, |
a6e0aa42 DV |
417 | i915_gem_get_gtt_alignment(obj), |
418 | false); | |
07f73f69 CW |
419 | if (ret) |
420 | return ret; | |
421 | ||
4bdadb97 | 422 | ret = i915_gem_object_get_pages(obj, 0); |
07f73f69 CW |
423 | } |
424 | ||
425 | return ret; | |
426 | } | |
427 | ||
eb01459f EA |
428 | /** |
429 | * This is the fallback shmem pread path, which allocates temporary storage | |
430 | * in kernel space to copy_to_user into outside of the struct_mutex, so we | |
431 | * can copy out of the object's backing pages while holding the struct mutex | |
432 | * and not take page faults. | |
433 | */ | |
434 | static int | |
435 | i915_gem_shmem_pread_slow(struct drm_device *dev, struct drm_gem_object *obj, | |
436 | struct drm_i915_gem_pread *args, | |
437 | struct drm_file *file_priv) | |
438 | { | |
23010e43 | 439 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
eb01459f EA |
440 | struct mm_struct *mm = current->mm; |
441 | struct page **user_pages; | |
442 | ssize_t remain; | |
443 | loff_t offset, pinned_pages, i; | |
444 | loff_t first_data_page, last_data_page, num_pages; | |
445 | int shmem_page_index, shmem_page_offset; | |
446 | int data_page_index, data_page_offset; | |
447 | int page_length; | |
448 | int ret; | |
449 | uint64_t data_ptr = args->data_ptr; | |
280b713b | 450 | int do_bit17_swizzling; |
eb01459f EA |
451 | |
452 | remain = args->size; | |
453 | ||
454 | /* Pin the user pages containing the data. We can't fault while | |
455 | * holding the struct mutex, yet we want to hold it while | |
456 | * dereferencing the user data. | |
457 | */ | |
458 | first_data_page = data_ptr / PAGE_SIZE; | |
459 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; | |
460 | num_pages = last_data_page - first_data_page + 1; | |
461 | ||
4f27b75d | 462 | user_pages = drm_malloc_ab(num_pages, sizeof(struct page *)); |
eb01459f EA |
463 | if (user_pages == NULL) |
464 | return -ENOMEM; | |
465 | ||
4f27b75d | 466 | mutex_unlock(&dev->struct_mutex); |
eb01459f EA |
467 | down_read(&mm->mmap_sem); |
468 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, | |
e5e9ecde | 469 | num_pages, 1, 0, user_pages, NULL); |
eb01459f | 470 | up_read(&mm->mmap_sem); |
4f27b75d | 471 | mutex_lock(&dev->struct_mutex); |
eb01459f EA |
472 | if (pinned_pages < num_pages) { |
473 | ret = -EFAULT; | |
4f27b75d | 474 | goto out; |
eb01459f EA |
475 | } |
476 | ||
4f27b75d CW |
477 | ret = i915_gem_object_set_cpu_read_domain_range(obj, |
478 | args->offset, | |
479 | args->size); | |
07f73f69 | 480 | if (ret) |
4f27b75d | 481 | goto out; |
eb01459f | 482 | |
4f27b75d | 483 | do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
eb01459f | 484 | |
23010e43 | 485 | obj_priv = to_intel_bo(obj); |
eb01459f EA |
486 | offset = args->offset; |
487 | ||
488 | while (remain > 0) { | |
489 | /* Operation in this page | |
490 | * | |
491 | * shmem_page_index = page number within shmem file | |
492 | * shmem_page_offset = offset within page in shmem file | |
493 | * data_page_index = page number in get_user_pages return | |
494 | * data_page_offset = offset with data_page_index page. | |
495 | * page_length = bytes to copy for this page | |
496 | */ | |
497 | shmem_page_index = offset / PAGE_SIZE; | |
498 | shmem_page_offset = offset & ~PAGE_MASK; | |
499 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; | |
500 | data_page_offset = data_ptr & ~PAGE_MASK; | |
501 | ||
502 | page_length = remain; | |
503 | if ((shmem_page_offset + page_length) > PAGE_SIZE) | |
504 | page_length = PAGE_SIZE - shmem_page_offset; | |
505 | if ((data_page_offset + page_length) > PAGE_SIZE) | |
506 | page_length = PAGE_SIZE - data_page_offset; | |
507 | ||
280b713b | 508 | if (do_bit17_swizzling) { |
99a03df5 | 509 | slow_shmem_bit17_copy(obj_priv->pages[shmem_page_index], |
280b713b | 510 | shmem_page_offset, |
99a03df5 CW |
511 | user_pages[data_page_index], |
512 | data_page_offset, | |
513 | page_length, | |
514 | 1); | |
515 | } else { | |
516 | slow_shmem_copy(user_pages[data_page_index], | |
517 | data_page_offset, | |
518 | obj_priv->pages[shmem_page_index], | |
519 | shmem_page_offset, | |
520 | page_length); | |
280b713b | 521 | } |
eb01459f EA |
522 | |
523 | remain -= page_length; | |
524 | data_ptr += page_length; | |
525 | offset += page_length; | |
526 | } | |
527 | ||
4f27b75d | 528 | out: |
eb01459f EA |
529 | for (i = 0; i < pinned_pages; i++) { |
530 | SetPageDirty(user_pages[i]); | |
531 | page_cache_release(user_pages[i]); | |
532 | } | |
8e7d2b2c | 533 | drm_free_large(user_pages); |
eb01459f EA |
534 | |
535 | return ret; | |
536 | } | |
537 | ||
673a394b EA |
538 | /** |
539 | * Reads data from the object referenced by handle. | |
540 | * | |
541 | * On error, the contents of *data are undefined. | |
542 | */ | |
543 | int | |
544 | i915_gem_pread_ioctl(struct drm_device *dev, void *data, | |
545 | struct drm_file *file_priv) | |
546 | { | |
547 | struct drm_i915_gem_pread *args = data; | |
548 | struct drm_gem_object *obj; | |
549 | struct drm_i915_gem_object *obj_priv; | |
35b62a89 | 550 | int ret = 0; |
673a394b | 551 | |
4f27b75d | 552 | ret = i915_mutex_lock_interruptible(dev); |
1d7cfea1 | 553 | if (ret) |
4f27b75d | 554 | return ret; |
673a394b EA |
555 | |
556 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
1d7cfea1 CW |
557 | if (obj == NULL) { |
558 | ret = -ENOENT; | |
559 | goto unlock; | |
4f27b75d | 560 | } |
23010e43 | 561 | obj_priv = to_intel_bo(obj); |
673a394b | 562 | |
7dcd2499 CW |
563 | /* Bounds check source. */ |
564 | if (args->offset > obj->size || args->size > obj->size - args->offset) { | |
ce9d419d | 565 | ret = -EINVAL; |
35b62a89 | 566 | goto out; |
ce9d419d CW |
567 | } |
568 | ||
35b62a89 CW |
569 | if (args->size == 0) |
570 | goto out; | |
571 | ||
ce9d419d CW |
572 | if (!access_ok(VERIFY_WRITE, |
573 | (char __user *)(uintptr_t)args->data_ptr, | |
574 | args->size)) { | |
575 | ret = -EFAULT; | |
35b62a89 | 576 | goto out; |
673a394b EA |
577 | } |
578 | ||
b5e4feb6 CW |
579 | ret = fault_in_pages_writeable((char __user *)(uintptr_t)args->data_ptr, |
580 | args->size); | |
581 | if (ret) { | |
582 | ret = -EFAULT; | |
583 | goto out; | |
280b713b | 584 | } |
673a394b | 585 | |
4f27b75d CW |
586 | ret = i915_gem_object_get_pages_or_evict(obj); |
587 | if (ret) | |
588 | goto out; | |
589 | ||
590 | ret = i915_gem_object_set_cpu_read_domain_range(obj, | |
591 | args->offset, | |
592 | args->size); | |
593 | if (ret) | |
594 | goto out_put; | |
595 | ||
596 | ret = -EFAULT; | |
597 | if (!i915_gem_object_needs_bit17_swizzle(obj)) | |
280b713b | 598 | ret = i915_gem_shmem_pread_fast(dev, obj, args, file_priv); |
4f27b75d CW |
599 | if (ret == -EFAULT) |
600 | ret = i915_gem_shmem_pread_slow(dev, obj, args, file_priv); | |
673a394b | 601 | |
4f27b75d CW |
602 | out_put: |
603 | i915_gem_object_put_pages(obj); | |
35b62a89 | 604 | out: |
4f27b75d | 605 | drm_gem_object_unreference(obj); |
1d7cfea1 | 606 | unlock: |
4f27b75d | 607 | mutex_unlock(&dev->struct_mutex); |
eb01459f | 608 | return ret; |
673a394b EA |
609 | } |
610 | ||
0839ccb8 KP |
611 | /* This is the fast write path which cannot handle |
612 | * page faults in the source data | |
9b7530cc | 613 | */ |
0839ccb8 KP |
614 | |
615 | static inline int | |
616 | fast_user_write(struct io_mapping *mapping, | |
617 | loff_t page_base, int page_offset, | |
618 | char __user *user_data, | |
619 | int length) | |
9b7530cc | 620 | { |
9b7530cc | 621 | char *vaddr_atomic; |
0839ccb8 | 622 | unsigned long unwritten; |
9b7530cc | 623 | |
3e4d3af5 | 624 | vaddr_atomic = io_mapping_map_atomic_wc(mapping, page_base); |
0839ccb8 KP |
625 | unwritten = __copy_from_user_inatomic_nocache(vaddr_atomic + page_offset, |
626 | user_data, length); | |
3e4d3af5 | 627 | io_mapping_unmap_atomic(vaddr_atomic); |
fbd5a26d | 628 | return unwritten; |
0839ccb8 KP |
629 | } |
630 | ||
631 | /* Here's the write path which can sleep for | |
632 | * page faults | |
633 | */ | |
634 | ||
ab34c226 | 635 | static inline void |
3de09aa3 EA |
636 | slow_kernel_write(struct io_mapping *mapping, |
637 | loff_t gtt_base, int gtt_offset, | |
638 | struct page *user_page, int user_offset, | |
639 | int length) | |
0839ccb8 | 640 | { |
ab34c226 CW |
641 | char __iomem *dst_vaddr; |
642 | char *src_vaddr; | |
0839ccb8 | 643 | |
ab34c226 CW |
644 | dst_vaddr = io_mapping_map_wc(mapping, gtt_base); |
645 | src_vaddr = kmap(user_page); | |
646 | ||
647 | memcpy_toio(dst_vaddr + gtt_offset, | |
648 | src_vaddr + user_offset, | |
649 | length); | |
650 | ||
651 | kunmap(user_page); | |
652 | io_mapping_unmap(dst_vaddr); | |
9b7530cc LT |
653 | } |
654 | ||
40123c1f EA |
655 | static inline int |
656 | fast_shmem_write(struct page **pages, | |
657 | loff_t page_base, int page_offset, | |
658 | char __user *data, | |
659 | int length) | |
660 | { | |
b5e4feb6 | 661 | char *vaddr; |
fbd5a26d | 662 | int ret; |
40123c1f | 663 | |
3e4d3af5 | 664 | vaddr = kmap_atomic(pages[page_base >> PAGE_SHIFT]); |
fbd5a26d | 665 | ret = __copy_from_user_inatomic(vaddr + page_offset, data, length); |
3e4d3af5 | 666 | kunmap_atomic(vaddr); |
40123c1f | 667 | |
fbd5a26d | 668 | return ret; |
40123c1f EA |
669 | } |
670 | ||
3de09aa3 EA |
671 | /** |
672 | * This is the fast pwrite path, where we copy the data directly from the | |
673 | * user into the GTT, uncached. | |
674 | */ | |
673a394b | 675 | static int |
3de09aa3 EA |
676 | i915_gem_gtt_pwrite_fast(struct drm_device *dev, struct drm_gem_object *obj, |
677 | struct drm_i915_gem_pwrite *args, | |
678 | struct drm_file *file_priv) | |
673a394b | 679 | { |
23010e43 | 680 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
0839ccb8 | 681 | drm_i915_private_t *dev_priv = dev->dev_private; |
673a394b | 682 | ssize_t remain; |
0839ccb8 | 683 | loff_t offset, page_base; |
673a394b | 684 | char __user *user_data; |
0839ccb8 | 685 | int page_offset, page_length; |
673a394b EA |
686 | |
687 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
688 | remain = args->size; | |
673a394b | 689 | |
23010e43 | 690 | obj_priv = to_intel_bo(obj); |
673a394b | 691 | offset = obj_priv->gtt_offset + args->offset; |
673a394b EA |
692 | |
693 | while (remain > 0) { | |
694 | /* Operation in this page | |
695 | * | |
0839ccb8 KP |
696 | * page_base = page offset within aperture |
697 | * page_offset = offset within page | |
698 | * page_length = bytes to copy for this page | |
673a394b | 699 | */ |
0839ccb8 KP |
700 | page_base = (offset & ~(PAGE_SIZE-1)); |
701 | page_offset = offset & (PAGE_SIZE-1); | |
702 | page_length = remain; | |
703 | if ((page_offset + remain) > PAGE_SIZE) | |
704 | page_length = PAGE_SIZE - page_offset; | |
705 | ||
0839ccb8 | 706 | /* If we get a fault while copying data, then (presumably) our |
3de09aa3 EA |
707 | * source page isn't available. Return the error and we'll |
708 | * retry in the slow path. | |
0839ccb8 | 709 | */ |
fbd5a26d CW |
710 | if (fast_user_write(dev_priv->mm.gtt_mapping, page_base, |
711 | page_offset, user_data, page_length)) | |
712 | ||
713 | return -EFAULT; | |
673a394b | 714 | |
0839ccb8 KP |
715 | remain -= page_length; |
716 | user_data += page_length; | |
717 | offset += page_length; | |
673a394b | 718 | } |
673a394b | 719 | |
fbd5a26d | 720 | return 0; |
673a394b EA |
721 | } |
722 | ||
3de09aa3 EA |
723 | /** |
724 | * This is the fallback GTT pwrite path, which uses get_user_pages to pin | |
725 | * the memory and maps it using kmap_atomic for copying. | |
726 | * | |
727 | * This code resulted in x11perf -rgb10text consuming about 10% more CPU | |
728 | * than using i915_gem_gtt_pwrite_fast on a G45 (32-bit). | |
729 | */ | |
3043c60c | 730 | static int |
3de09aa3 EA |
731 | i915_gem_gtt_pwrite_slow(struct drm_device *dev, struct drm_gem_object *obj, |
732 | struct drm_i915_gem_pwrite *args, | |
733 | struct drm_file *file_priv) | |
673a394b | 734 | { |
23010e43 | 735 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
3de09aa3 EA |
736 | drm_i915_private_t *dev_priv = dev->dev_private; |
737 | ssize_t remain; | |
738 | loff_t gtt_page_base, offset; | |
739 | loff_t first_data_page, last_data_page, num_pages; | |
740 | loff_t pinned_pages, i; | |
741 | struct page **user_pages; | |
742 | struct mm_struct *mm = current->mm; | |
743 | int gtt_page_offset, data_page_offset, data_page_index, page_length; | |
673a394b | 744 | int ret; |
3de09aa3 EA |
745 | uint64_t data_ptr = args->data_ptr; |
746 | ||
747 | remain = args->size; | |
748 | ||
749 | /* Pin the user pages containing the data. We can't fault while | |
750 | * holding the struct mutex, and all of the pwrite implementations | |
751 | * want to hold it while dereferencing the user data. | |
752 | */ | |
753 | first_data_page = data_ptr / PAGE_SIZE; | |
754 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; | |
755 | num_pages = last_data_page - first_data_page + 1; | |
756 | ||
fbd5a26d | 757 | user_pages = drm_malloc_ab(num_pages, sizeof(struct page *)); |
3de09aa3 EA |
758 | if (user_pages == NULL) |
759 | return -ENOMEM; | |
760 | ||
fbd5a26d | 761 | mutex_unlock(&dev->struct_mutex); |
3de09aa3 EA |
762 | down_read(&mm->mmap_sem); |
763 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, | |
764 | num_pages, 0, 0, user_pages, NULL); | |
765 | up_read(&mm->mmap_sem); | |
fbd5a26d | 766 | mutex_lock(&dev->struct_mutex); |
3de09aa3 EA |
767 | if (pinned_pages < num_pages) { |
768 | ret = -EFAULT; | |
769 | goto out_unpin_pages; | |
770 | } | |
673a394b | 771 | |
3de09aa3 EA |
772 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); |
773 | if (ret) | |
fbd5a26d | 774 | goto out_unpin_pages; |
3de09aa3 | 775 | |
23010e43 | 776 | obj_priv = to_intel_bo(obj); |
3de09aa3 EA |
777 | offset = obj_priv->gtt_offset + args->offset; |
778 | ||
779 | while (remain > 0) { | |
780 | /* Operation in this page | |
781 | * | |
782 | * gtt_page_base = page offset within aperture | |
783 | * gtt_page_offset = offset within page in aperture | |
784 | * data_page_index = page number in get_user_pages return | |
785 | * data_page_offset = offset with data_page_index page. | |
786 | * page_length = bytes to copy for this page | |
787 | */ | |
788 | gtt_page_base = offset & PAGE_MASK; | |
789 | gtt_page_offset = offset & ~PAGE_MASK; | |
790 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; | |
791 | data_page_offset = data_ptr & ~PAGE_MASK; | |
792 | ||
793 | page_length = remain; | |
794 | if ((gtt_page_offset + page_length) > PAGE_SIZE) | |
795 | page_length = PAGE_SIZE - gtt_page_offset; | |
796 | if ((data_page_offset + page_length) > PAGE_SIZE) | |
797 | page_length = PAGE_SIZE - data_page_offset; | |
798 | ||
ab34c226 CW |
799 | slow_kernel_write(dev_priv->mm.gtt_mapping, |
800 | gtt_page_base, gtt_page_offset, | |
801 | user_pages[data_page_index], | |
802 | data_page_offset, | |
803 | page_length); | |
3de09aa3 EA |
804 | |
805 | remain -= page_length; | |
806 | offset += page_length; | |
807 | data_ptr += page_length; | |
808 | } | |
809 | ||
3de09aa3 EA |
810 | out_unpin_pages: |
811 | for (i = 0; i < pinned_pages; i++) | |
812 | page_cache_release(user_pages[i]); | |
8e7d2b2c | 813 | drm_free_large(user_pages); |
3de09aa3 EA |
814 | |
815 | return ret; | |
816 | } | |
817 | ||
40123c1f EA |
818 | /** |
819 | * This is the fast shmem pwrite path, which attempts to directly | |
820 | * copy_from_user into the kmapped pages backing the object. | |
821 | */ | |
3043c60c | 822 | static int |
40123c1f EA |
823 | i915_gem_shmem_pwrite_fast(struct drm_device *dev, struct drm_gem_object *obj, |
824 | struct drm_i915_gem_pwrite *args, | |
825 | struct drm_file *file_priv) | |
673a394b | 826 | { |
23010e43 | 827 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
40123c1f EA |
828 | ssize_t remain; |
829 | loff_t offset, page_base; | |
830 | char __user *user_data; | |
831 | int page_offset, page_length; | |
40123c1f EA |
832 | |
833 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
834 | remain = args->size; | |
673a394b | 835 | |
23010e43 | 836 | obj_priv = to_intel_bo(obj); |
40123c1f EA |
837 | offset = args->offset; |
838 | obj_priv->dirty = 1; | |
839 | ||
840 | while (remain > 0) { | |
841 | /* Operation in this page | |
842 | * | |
843 | * page_base = page offset within aperture | |
844 | * page_offset = offset within page | |
845 | * page_length = bytes to copy for this page | |
846 | */ | |
847 | page_base = (offset & ~(PAGE_SIZE-1)); | |
848 | page_offset = offset & (PAGE_SIZE-1); | |
849 | page_length = remain; | |
850 | if ((page_offset + remain) > PAGE_SIZE) | |
851 | page_length = PAGE_SIZE - page_offset; | |
852 | ||
fbd5a26d | 853 | if (fast_shmem_write(obj_priv->pages, |
40123c1f | 854 | page_base, page_offset, |
fbd5a26d CW |
855 | user_data, page_length)) |
856 | return -EFAULT; | |
40123c1f EA |
857 | |
858 | remain -= page_length; | |
859 | user_data += page_length; | |
860 | offset += page_length; | |
861 | } | |
862 | ||
fbd5a26d | 863 | return 0; |
40123c1f EA |
864 | } |
865 | ||
866 | /** | |
867 | * This is the fallback shmem pwrite path, which uses get_user_pages to pin | |
868 | * the memory and maps it using kmap_atomic for copying. | |
869 | * | |
870 | * This avoids taking mmap_sem for faulting on the user's address while the | |
871 | * struct_mutex is held. | |
872 | */ | |
873 | static int | |
874 | i915_gem_shmem_pwrite_slow(struct drm_device *dev, struct drm_gem_object *obj, | |
875 | struct drm_i915_gem_pwrite *args, | |
876 | struct drm_file *file_priv) | |
877 | { | |
23010e43 | 878 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
40123c1f EA |
879 | struct mm_struct *mm = current->mm; |
880 | struct page **user_pages; | |
881 | ssize_t remain; | |
882 | loff_t offset, pinned_pages, i; | |
883 | loff_t first_data_page, last_data_page, num_pages; | |
884 | int shmem_page_index, shmem_page_offset; | |
885 | int data_page_index, data_page_offset; | |
886 | int page_length; | |
887 | int ret; | |
888 | uint64_t data_ptr = args->data_ptr; | |
280b713b | 889 | int do_bit17_swizzling; |
40123c1f EA |
890 | |
891 | remain = args->size; | |
892 | ||
893 | /* Pin the user pages containing the data. We can't fault while | |
894 | * holding the struct mutex, and all of the pwrite implementations | |
895 | * want to hold it while dereferencing the user data. | |
896 | */ | |
897 | first_data_page = data_ptr / PAGE_SIZE; | |
898 | last_data_page = (data_ptr + args->size - 1) / PAGE_SIZE; | |
899 | num_pages = last_data_page - first_data_page + 1; | |
900 | ||
4f27b75d | 901 | user_pages = drm_malloc_ab(num_pages, sizeof(struct page *)); |
40123c1f EA |
902 | if (user_pages == NULL) |
903 | return -ENOMEM; | |
904 | ||
fbd5a26d | 905 | mutex_unlock(&dev->struct_mutex); |
40123c1f EA |
906 | down_read(&mm->mmap_sem); |
907 | pinned_pages = get_user_pages(current, mm, (uintptr_t)args->data_ptr, | |
908 | num_pages, 0, 0, user_pages, NULL); | |
909 | up_read(&mm->mmap_sem); | |
fbd5a26d | 910 | mutex_lock(&dev->struct_mutex); |
40123c1f EA |
911 | if (pinned_pages < num_pages) { |
912 | ret = -EFAULT; | |
fbd5a26d | 913 | goto out; |
673a394b EA |
914 | } |
915 | ||
fbd5a26d | 916 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
07f73f69 | 917 | if (ret) |
fbd5a26d | 918 | goto out; |
40123c1f | 919 | |
fbd5a26d | 920 | do_bit17_swizzling = i915_gem_object_needs_bit17_swizzle(obj); |
40123c1f | 921 | |
23010e43 | 922 | obj_priv = to_intel_bo(obj); |
673a394b | 923 | offset = args->offset; |
40123c1f | 924 | obj_priv->dirty = 1; |
673a394b | 925 | |
40123c1f EA |
926 | while (remain > 0) { |
927 | /* Operation in this page | |
928 | * | |
929 | * shmem_page_index = page number within shmem file | |
930 | * shmem_page_offset = offset within page in shmem file | |
931 | * data_page_index = page number in get_user_pages return | |
932 | * data_page_offset = offset with data_page_index page. | |
933 | * page_length = bytes to copy for this page | |
934 | */ | |
935 | shmem_page_index = offset / PAGE_SIZE; | |
936 | shmem_page_offset = offset & ~PAGE_MASK; | |
937 | data_page_index = data_ptr / PAGE_SIZE - first_data_page; | |
938 | data_page_offset = data_ptr & ~PAGE_MASK; | |
939 | ||
940 | page_length = remain; | |
941 | if ((shmem_page_offset + page_length) > PAGE_SIZE) | |
942 | page_length = PAGE_SIZE - shmem_page_offset; | |
943 | if ((data_page_offset + page_length) > PAGE_SIZE) | |
944 | page_length = PAGE_SIZE - data_page_offset; | |
945 | ||
280b713b | 946 | if (do_bit17_swizzling) { |
99a03df5 | 947 | slow_shmem_bit17_copy(obj_priv->pages[shmem_page_index], |
280b713b EA |
948 | shmem_page_offset, |
949 | user_pages[data_page_index], | |
950 | data_page_offset, | |
99a03df5 CW |
951 | page_length, |
952 | 0); | |
953 | } else { | |
954 | slow_shmem_copy(obj_priv->pages[shmem_page_index], | |
955 | shmem_page_offset, | |
956 | user_pages[data_page_index], | |
957 | data_page_offset, | |
958 | page_length); | |
280b713b | 959 | } |
40123c1f EA |
960 | |
961 | remain -= page_length; | |
962 | data_ptr += page_length; | |
963 | offset += page_length; | |
673a394b EA |
964 | } |
965 | ||
fbd5a26d | 966 | out: |
40123c1f EA |
967 | for (i = 0; i < pinned_pages; i++) |
968 | page_cache_release(user_pages[i]); | |
8e7d2b2c | 969 | drm_free_large(user_pages); |
673a394b | 970 | |
40123c1f | 971 | return ret; |
673a394b EA |
972 | } |
973 | ||
974 | /** | |
975 | * Writes data to the object referenced by handle. | |
976 | * | |
977 | * On error, the contents of the buffer that were to be modified are undefined. | |
978 | */ | |
979 | int | |
980 | i915_gem_pwrite_ioctl(struct drm_device *dev, void *data, | |
fbd5a26d | 981 | struct drm_file *file) |
673a394b EA |
982 | { |
983 | struct drm_i915_gem_pwrite *args = data; | |
984 | struct drm_gem_object *obj; | |
985 | struct drm_i915_gem_object *obj_priv; | |
986 | int ret = 0; | |
987 | ||
fbd5a26d | 988 | ret = i915_mutex_lock_interruptible(dev); |
1d7cfea1 | 989 | if (ret) |
fbd5a26d | 990 | return ret; |
1d7cfea1 CW |
991 | |
992 | obj = drm_gem_object_lookup(dev, file, args->handle); | |
993 | if (obj == NULL) { | |
994 | ret = -ENOENT; | |
995 | goto unlock; | |
fbd5a26d | 996 | } |
23010e43 | 997 | obj_priv = to_intel_bo(obj); |
673a394b | 998 | |
fbd5a26d | 999 | |
7dcd2499 CW |
1000 | /* Bounds check destination. */ |
1001 | if (args->offset > obj->size || args->size > obj->size - args->offset) { | |
ce9d419d | 1002 | ret = -EINVAL; |
35b62a89 | 1003 | goto out; |
ce9d419d CW |
1004 | } |
1005 | ||
35b62a89 CW |
1006 | if (args->size == 0) |
1007 | goto out; | |
1008 | ||
ce9d419d CW |
1009 | if (!access_ok(VERIFY_READ, |
1010 | (char __user *)(uintptr_t)args->data_ptr, | |
1011 | args->size)) { | |
1012 | ret = -EFAULT; | |
35b62a89 | 1013 | goto out; |
673a394b EA |
1014 | } |
1015 | ||
b5e4feb6 CW |
1016 | ret = fault_in_pages_readable((char __user *)(uintptr_t)args->data_ptr, |
1017 | args->size); | |
1018 | if (ret) { | |
1019 | ret = -EFAULT; | |
1020 | goto out; | |
673a394b EA |
1021 | } |
1022 | ||
1023 | /* We can only do the GTT pwrite on untiled buffers, as otherwise | |
1024 | * it would end up going through the fenced access, and we'll get | |
1025 | * different detiling behavior between reading and writing. | |
1026 | * pread/pwrite currently are reading and writing from the CPU | |
1027 | * perspective, requiring manual detiling by the client. | |
1028 | */ | |
71acb5eb | 1029 | if (obj_priv->phys_obj) |
fbd5a26d | 1030 | ret = i915_gem_phys_pwrite(dev, obj, args, file); |
71acb5eb | 1031 | else if (obj_priv->tiling_mode == I915_TILING_NONE && |
5cdf5881 | 1032 | obj_priv->gtt_space && |
9b8c4a0b | 1033 | obj->write_domain != I915_GEM_DOMAIN_CPU) { |
fbd5a26d CW |
1034 | ret = i915_gem_object_pin(obj, 0); |
1035 | if (ret) | |
1036 | goto out; | |
1037 | ||
1038 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); | |
1039 | if (ret) | |
1040 | goto out_unpin; | |
1041 | ||
1042 | ret = i915_gem_gtt_pwrite_fast(dev, obj, args, file); | |
1043 | if (ret == -EFAULT) | |
1044 | ret = i915_gem_gtt_pwrite_slow(dev, obj, args, file); | |
1045 | ||
1046 | out_unpin: | |
1047 | i915_gem_object_unpin(obj); | |
40123c1f | 1048 | } else { |
fbd5a26d CW |
1049 | ret = i915_gem_object_get_pages_or_evict(obj); |
1050 | if (ret) | |
1051 | goto out; | |
673a394b | 1052 | |
fbd5a26d CW |
1053 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
1054 | if (ret) | |
1055 | goto out_put; | |
673a394b | 1056 | |
fbd5a26d CW |
1057 | ret = -EFAULT; |
1058 | if (!i915_gem_object_needs_bit17_swizzle(obj)) | |
1059 | ret = i915_gem_shmem_pwrite_fast(dev, obj, args, file); | |
1060 | if (ret == -EFAULT) | |
1061 | ret = i915_gem_shmem_pwrite_slow(dev, obj, args, file); | |
1062 | ||
1063 | out_put: | |
1064 | i915_gem_object_put_pages(obj); | |
1065 | } | |
673a394b | 1066 | |
35b62a89 | 1067 | out: |
fbd5a26d | 1068 | drm_gem_object_unreference(obj); |
1d7cfea1 | 1069 | unlock: |
fbd5a26d | 1070 | mutex_unlock(&dev->struct_mutex); |
673a394b EA |
1071 | return ret; |
1072 | } | |
1073 | ||
1074 | /** | |
2ef7eeaa EA |
1075 | * Called when user space prepares to use an object with the CPU, either |
1076 | * through the mmap ioctl's mapping or a GTT mapping. | |
673a394b EA |
1077 | */ |
1078 | int | |
1079 | i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, | |
1080 | struct drm_file *file_priv) | |
1081 | { | |
a09ba7fa | 1082 | struct drm_i915_private *dev_priv = dev->dev_private; |
673a394b EA |
1083 | struct drm_i915_gem_set_domain *args = data; |
1084 | struct drm_gem_object *obj; | |
652c393a | 1085 | struct drm_i915_gem_object *obj_priv; |
2ef7eeaa EA |
1086 | uint32_t read_domains = args->read_domains; |
1087 | uint32_t write_domain = args->write_domain; | |
673a394b EA |
1088 | int ret; |
1089 | ||
1090 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1091 | return -ENODEV; | |
1092 | ||
2ef7eeaa | 1093 | /* Only handle setting domains to types used by the CPU. */ |
21d509e3 | 1094 | if (write_domain & I915_GEM_GPU_DOMAINS) |
2ef7eeaa EA |
1095 | return -EINVAL; |
1096 | ||
21d509e3 | 1097 | if (read_domains & I915_GEM_GPU_DOMAINS) |
2ef7eeaa EA |
1098 | return -EINVAL; |
1099 | ||
1100 | /* Having something in the write domain implies it's in the read | |
1101 | * domain, and only that read domain. Enforce that in the request. | |
1102 | */ | |
1103 | if (write_domain != 0 && read_domains != write_domain) | |
1104 | return -EINVAL; | |
1105 | ||
76c1dec1 | 1106 | ret = i915_mutex_lock_interruptible(dev); |
1d7cfea1 | 1107 | if (ret) |
76c1dec1 | 1108 | return ret; |
1d7cfea1 | 1109 | |
673a394b | 1110 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
1d7cfea1 CW |
1111 | if (obj == NULL) { |
1112 | ret = -ENOENT; | |
1113 | goto unlock; | |
76c1dec1 | 1114 | } |
23010e43 | 1115 | obj_priv = to_intel_bo(obj); |
673a394b | 1116 | |
652c393a JB |
1117 | intel_mark_busy(dev, obj); |
1118 | ||
2ef7eeaa EA |
1119 | if (read_domains & I915_GEM_DOMAIN_GTT) { |
1120 | ret = i915_gem_object_set_to_gtt_domain(obj, write_domain != 0); | |
02354392 | 1121 | |
a09ba7fa EA |
1122 | /* Update the LRU on the fence for the CPU access that's |
1123 | * about to occur. | |
1124 | */ | |
1125 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) { | |
007cc8ac DV |
1126 | struct drm_i915_fence_reg *reg = |
1127 | &dev_priv->fence_regs[obj_priv->fence_reg]; | |
1128 | list_move_tail(®->lru_list, | |
a09ba7fa EA |
1129 | &dev_priv->mm.fence_list); |
1130 | } | |
1131 | ||
02354392 EA |
1132 | /* Silently promote "you're not bound, there was nothing to do" |
1133 | * to success, since the client was just asking us to | |
1134 | * make sure everything was done. | |
1135 | */ | |
1136 | if (ret == -EINVAL) | |
1137 | ret = 0; | |
2ef7eeaa | 1138 | } else { |
e47c68e9 | 1139 | ret = i915_gem_object_set_to_cpu_domain(obj, write_domain != 0); |
2ef7eeaa EA |
1140 | } |
1141 | ||
7d1c4804 CW |
1142 | /* Maintain LRU order of "inactive" objects */ |
1143 | if (ret == 0 && i915_gem_object_is_inactive(obj_priv)) | |
69dc4987 | 1144 | list_move_tail(&obj_priv->mm_list, &dev_priv->mm.inactive_list); |
7d1c4804 | 1145 | |
673a394b | 1146 | drm_gem_object_unreference(obj); |
1d7cfea1 | 1147 | unlock: |
673a394b EA |
1148 | mutex_unlock(&dev->struct_mutex); |
1149 | return ret; | |
1150 | } | |
1151 | ||
1152 | /** | |
1153 | * Called when user space has done writes to this buffer | |
1154 | */ | |
1155 | int | |
1156 | i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data, | |
1157 | struct drm_file *file_priv) | |
1158 | { | |
1159 | struct drm_i915_gem_sw_finish *args = data; | |
1160 | struct drm_gem_object *obj; | |
673a394b EA |
1161 | int ret = 0; |
1162 | ||
1163 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1164 | return -ENODEV; | |
1165 | ||
76c1dec1 | 1166 | ret = i915_mutex_lock_interruptible(dev); |
1d7cfea1 | 1167 | if (ret) |
76c1dec1 | 1168 | return ret; |
1d7cfea1 | 1169 | |
673a394b EA |
1170 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
1171 | if (obj == NULL) { | |
1d7cfea1 CW |
1172 | ret = -ENOENT; |
1173 | goto unlock; | |
673a394b EA |
1174 | } |
1175 | ||
673a394b | 1176 | /* Pinned buffers may be scanout, so flush the cache */ |
3d2a812a | 1177 | if (to_intel_bo(obj)->pin_count) |
e47c68e9 EA |
1178 | i915_gem_object_flush_cpu_write_domain(obj); |
1179 | ||
673a394b | 1180 | drm_gem_object_unreference(obj); |
1d7cfea1 | 1181 | unlock: |
673a394b EA |
1182 | mutex_unlock(&dev->struct_mutex); |
1183 | return ret; | |
1184 | } | |
1185 | ||
1186 | /** | |
1187 | * Maps the contents of an object, returning the address it is mapped | |
1188 | * into. | |
1189 | * | |
1190 | * While the mapping holds a reference on the contents of the object, it doesn't | |
1191 | * imply a ref on the object itself. | |
1192 | */ | |
1193 | int | |
1194 | i915_gem_mmap_ioctl(struct drm_device *dev, void *data, | |
1195 | struct drm_file *file_priv) | |
1196 | { | |
1197 | struct drm_i915_gem_mmap *args = data; | |
1198 | struct drm_gem_object *obj; | |
1199 | loff_t offset; | |
1200 | unsigned long addr; | |
1201 | ||
1202 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1203 | return -ENODEV; | |
1204 | ||
1205 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
1206 | if (obj == NULL) | |
bf79cb91 | 1207 | return -ENOENT; |
673a394b EA |
1208 | |
1209 | offset = args->offset; | |
1210 | ||
1211 | down_write(¤t->mm->mmap_sem); | |
1212 | addr = do_mmap(obj->filp, 0, args->size, | |
1213 | PROT_READ | PROT_WRITE, MAP_SHARED, | |
1214 | args->offset); | |
1215 | up_write(¤t->mm->mmap_sem); | |
bc9025bd | 1216 | drm_gem_object_unreference_unlocked(obj); |
673a394b EA |
1217 | if (IS_ERR((void *)addr)) |
1218 | return addr; | |
1219 | ||
1220 | args->addr_ptr = (uint64_t) addr; | |
1221 | ||
1222 | return 0; | |
1223 | } | |
1224 | ||
de151cf6 JB |
1225 | /** |
1226 | * i915_gem_fault - fault a page into the GTT | |
1227 | * vma: VMA in question | |
1228 | * vmf: fault info | |
1229 | * | |
1230 | * The fault handler is set up by drm_gem_mmap() when a object is GTT mapped | |
1231 | * from userspace. The fault handler takes care of binding the object to | |
1232 | * the GTT (if needed), allocating and programming a fence register (again, | |
1233 | * only if needed based on whether the old reg is still valid or the object | |
1234 | * is tiled) and inserting a new PTE into the faulting process. | |
1235 | * | |
1236 | * Note that the faulting process may involve evicting existing objects | |
1237 | * from the GTT and/or fence registers to make room. So performance may | |
1238 | * suffer if the GTT working set is large or there are few fence registers | |
1239 | * left. | |
1240 | */ | |
1241 | int i915_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) | |
1242 | { | |
1243 | struct drm_gem_object *obj = vma->vm_private_data; | |
1244 | struct drm_device *dev = obj->dev; | |
7d1c4804 | 1245 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 1246 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
1247 | pgoff_t page_offset; |
1248 | unsigned long pfn; | |
1249 | int ret = 0; | |
0f973f27 | 1250 | bool write = !!(vmf->flags & FAULT_FLAG_WRITE); |
de151cf6 JB |
1251 | |
1252 | /* We don't use vmf->pgoff since that has the fake offset */ | |
1253 | page_offset = ((unsigned long)vmf->virtual_address - vma->vm_start) >> | |
1254 | PAGE_SHIFT; | |
1255 | ||
1256 | /* Now bind it into the GTT if needed */ | |
1257 | mutex_lock(&dev->struct_mutex); | |
1258 | if (!obj_priv->gtt_space) { | |
e67b8ce1 | 1259 | ret = i915_gem_object_bind_to_gtt(obj, 0); |
c715089f CW |
1260 | if (ret) |
1261 | goto unlock; | |
07f4f3e8 | 1262 | |
07f4f3e8 | 1263 | ret = i915_gem_object_set_to_gtt_domain(obj, write); |
c715089f CW |
1264 | if (ret) |
1265 | goto unlock; | |
de151cf6 JB |
1266 | } |
1267 | ||
1268 | /* Need a new fence register? */ | |
a09ba7fa | 1269 | if (obj_priv->tiling_mode != I915_TILING_NONE) { |
2cf34d7b | 1270 | ret = i915_gem_object_get_fence_reg(obj, true); |
c715089f CW |
1271 | if (ret) |
1272 | goto unlock; | |
d9ddcb96 | 1273 | } |
de151cf6 | 1274 | |
7d1c4804 | 1275 | if (i915_gem_object_is_inactive(obj_priv)) |
69dc4987 | 1276 | list_move_tail(&obj_priv->mm_list, &dev_priv->mm.inactive_list); |
7d1c4804 | 1277 | |
de151cf6 JB |
1278 | pfn = ((dev->agp->base + obj_priv->gtt_offset) >> PAGE_SHIFT) + |
1279 | page_offset; | |
1280 | ||
1281 | /* Finally, remap it using the new GTT offset */ | |
1282 | ret = vm_insert_pfn(vma, (unsigned long)vmf->virtual_address, pfn); | |
c715089f | 1283 | unlock: |
de151cf6 JB |
1284 | mutex_unlock(&dev->struct_mutex); |
1285 | ||
1286 | switch (ret) { | |
c715089f CW |
1287 | case 0: |
1288 | case -ERESTARTSYS: | |
1289 | return VM_FAULT_NOPAGE; | |
de151cf6 JB |
1290 | case -ENOMEM: |
1291 | case -EAGAIN: | |
1292 | return VM_FAULT_OOM; | |
de151cf6 | 1293 | default: |
c715089f | 1294 | return VM_FAULT_SIGBUS; |
de151cf6 JB |
1295 | } |
1296 | } | |
1297 | ||
1298 | /** | |
1299 | * i915_gem_create_mmap_offset - create a fake mmap offset for an object | |
1300 | * @obj: obj in question | |
1301 | * | |
1302 | * GEM memory mapping works by handing back to userspace a fake mmap offset | |
1303 | * it can use in a subsequent mmap(2) call. The DRM core code then looks | |
1304 | * up the object based on the offset and sets up the various memory mapping | |
1305 | * structures. | |
1306 | * | |
1307 | * This routine allocates and attaches a fake offset for @obj. | |
1308 | */ | |
1309 | static int | |
1310 | i915_gem_create_mmap_offset(struct drm_gem_object *obj) | |
1311 | { | |
1312 | struct drm_device *dev = obj->dev; | |
1313 | struct drm_gem_mm *mm = dev->mm_private; | |
23010e43 | 1314 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 | 1315 | struct drm_map_list *list; |
f77d390c | 1316 | struct drm_local_map *map; |
de151cf6 JB |
1317 | int ret = 0; |
1318 | ||
1319 | /* Set the object up for mmap'ing */ | |
1320 | list = &obj->map_list; | |
9a298b2a | 1321 | list->map = kzalloc(sizeof(struct drm_map_list), GFP_KERNEL); |
de151cf6 JB |
1322 | if (!list->map) |
1323 | return -ENOMEM; | |
1324 | ||
1325 | map = list->map; | |
1326 | map->type = _DRM_GEM; | |
1327 | map->size = obj->size; | |
1328 | map->handle = obj; | |
1329 | ||
1330 | /* Get a DRM GEM mmap offset allocated... */ | |
1331 | list->file_offset_node = drm_mm_search_free(&mm->offset_manager, | |
1332 | obj->size / PAGE_SIZE, 0, 0); | |
1333 | if (!list->file_offset_node) { | |
1334 | DRM_ERROR("failed to allocate offset for bo %d\n", obj->name); | |
9e0ae534 | 1335 | ret = -ENOSPC; |
de151cf6 JB |
1336 | goto out_free_list; |
1337 | } | |
1338 | ||
1339 | list->file_offset_node = drm_mm_get_block(list->file_offset_node, | |
1340 | obj->size / PAGE_SIZE, 0); | |
1341 | if (!list->file_offset_node) { | |
1342 | ret = -ENOMEM; | |
1343 | goto out_free_list; | |
1344 | } | |
1345 | ||
1346 | list->hash.key = list->file_offset_node->start; | |
9e0ae534 CW |
1347 | ret = drm_ht_insert_item(&mm->offset_hash, &list->hash); |
1348 | if (ret) { | |
de151cf6 JB |
1349 | DRM_ERROR("failed to add to map hash\n"); |
1350 | goto out_free_mm; | |
1351 | } | |
1352 | ||
1353 | /* By now we should be all set, any drm_mmap request on the offset | |
1354 | * below will get to our mmap & fault handler */ | |
1355 | obj_priv->mmap_offset = ((uint64_t) list->hash.key) << PAGE_SHIFT; | |
1356 | ||
1357 | return 0; | |
1358 | ||
1359 | out_free_mm: | |
1360 | drm_mm_put_block(list->file_offset_node); | |
1361 | out_free_list: | |
9a298b2a | 1362 | kfree(list->map); |
de151cf6 JB |
1363 | |
1364 | return ret; | |
1365 | } | |
1366 | ||
901782b2 CW |
1367 | /** |
1368 | * i915_gem_release_mmap - remove physical page mappings | |
1369 | * @obj: obj in question | |
1370 | * | |
af901ca1 | 1371 | * Preserve the reservation of the mmapping with the DRM core code, but |
901782b2 CW |
1372 | * relinquish ownership of the pages back to the system. |
1373 | * | |
1374 | * It is vital that we remove the page mapping if we have mapped a tiled | |
1375 | * object through the GTT and then lose the fence register due to | |
1376 | * resource pressure. Similarly if the object has been moved out of the | |
1377 | * aperture, than pages mapped into userspace must be revoked. Removing the | |
1378 | * mapping will then trigger a page fault on the next user access, allowing | |
1379 | * fixup by i915_gem_fault(). | |
1380 | */ | |
d05ca301 | 1381 | void |
901782b2 CW |
1382 | i915_gem_release_mmap(struct drm_gem_object *obj) |
1383 | { | |
1384 | struct drm_device *dev = obj->dev; | |
23010e43 | 1385 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
901782b2 CW |
1386 | |
1387 | if (dev->dev_mapping) | |
1388 | unmap_mapping_range(dev->dev_mapping, | |
1389 | obj_priv->mmap_offset, obj->size, 1); | |
1390 | } | |
1391 | ||
ab00b3e5 JB |
1392 | static void |
1393 | i915_gem_free_mmap_offset(struct drm_gem_object *obj) | |
1394 | { | |
1395 | struct drm_device *dev = obj->dev; | |
23010e43 | 1396 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
ab00b3e5 JB |
1397 | struct drm_gem_mm *mm = dev->mm_private; |
1398 | struct drm_map_list *list; | |
1399 | ||
1400 | list = &obj->map_list; | |
1401 | drm_ht_remove_item(&mm->offset_hash, &list->hash); | |
1402 | ||
1403 | if (list->file_offset_node) { | |
1404 | drm_mm_put_block(list->file_offset_node); | |
1405 | list->file_offset_node = NULL; | |
1406 | } | |
1407 | ||
1408 | if (list->map) { | |
9a298b2a | 1409 | kfree(list->map); |
ab00b3e5 JB |
1410 | list->map = NULL; |
1411 | } | |
1412 | ||
1413 | obj_priv->mmap_offset = 0; | |
1414 | } | |
1415 | ||
de151cf6 JB |
1416 | /** |
1417 | * i915_gem_get_gtt_alignment - return required GTT alignment for an object | |
1418 | * @obj: object to check | |
1419 | * | |
1420 | * Return the required GTT alignment for an object, taking into account | |
1421 | * potential fence register mapping if needed. | |
1422 | */ | |
1423 | static uint32_t | |
1424 | i915_gem_get_gtt_alignment(struct drm_gem_object *obj) | |
1425 | { | |
1426 | struct drm_device *dev = obj->dev; | |
23010e43 | 1427 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
1428 | int start, i; |
1429 | ||
1430 | /* | |
1431 | * Minimum alignment is 4k (GTT page size), but might be greater | |
1432 | * if a fence register is needed for the object. | |
1433 | */ | |
a6c45cf0 | 1434 | if (INTEL_INFO(dev)->gen >= 4 || obj_priv->tiling_mode == I915_TILING_NONE) |
de151cf6 JB |
1435 | return 4096; |
1436 | ||
1437 | /* | |
1438 | * Previous chips need to be aligned to the size of the smallest | |
1439 | * fence register that can contain the object. | |
1440 | */ | |
a6c45cf0 | 1441 | if (INTEL_INFO(dev)->gen == 3) |
de151cf6 JB |
1442 | start = 1024*1024; |
1443 | else | |
1444 | start = 512*1024; | |
1445 | ||
1446 | for (i = start; i < obj->size; i <<= 1) | |
1447 | ; | |
1448 | ||
1449 | return i; | |
1450 | } | |
1451 | ||
1452 | /** | |
1453 | * i915_gem_mmap_gtt_ioctl - prepare an object for GTT mmap'ing | |
1454 | * @dev: DRM device | |
1455 | * @data: GTT mapping ioctl data | |
1456 | * @file_priv: GEM object info | |
1457 | * | |
1458 | * Simply returns the fake offset to userspace so it can mmap it. | |
1459 | * The mmap call will end up in drm_gem_mmap(), which will set things | |
1460 | * up so we can get faults in the handler above. | |
1461 | * | |
1462 | * The fault handler will take care of binding the object into the GTT | |
1463 | * (since it may have been evicted to make room for something), allocating | |
1464 | * a fence register, and mapping the appropriate aperture address into | |
1465 | * userspace. | |
1466 | */ | |
1467 | int | |
1468 | i915_gem_mmap_gtt_ioctl(struct drm_device *dev, void *data, | |
1469 | struct drm_file *file_priv) | |
1470 | { | |
1471 | struct drm_i915_gem_mmap_gtt *args = data; | |
de151cf6 JB |
1472 | struct drm_gem_object *obj; |
1473 | struct drm_i915_gem_object *obj_priv; | |
1474 | int ret; | |
1475 | ||
1476 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
1477 | return -ENODEV; | |
1478 | ||
76c1dec1 | 1479 | ret = i915_mutex_lock_interruptible(dev); |
1d7cfea1 | 1480 | if (ret) |
76c1dec1 | 1481 | return ret; |
de151cf6 | 1482 | |
1d7cfea1 CW |
1483 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
1484 | if (obj == NULL) { | |
1485 | ret = -ENOENT; | |
1486 | goto unlock; | |
1487 | } | |
23010e43 | 1488 | obj_priv = to_intel_bo(obj); |
de151cf6 | 1489 | |
ab18282d CW |
1490 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
1491 | DRM_ERROR("Attempting to mmap a purgeable buffer\n"); | |
1d7cfea1 CW |
1492 | ret = -EINVAL; |
1493 | goto out; | |
ab18282d CW |
1494 | } |
1495 | ||
de151cf6 JB |
1496 | if (!obj_priv->mmap_offset) { |
1497 | ret = i915_gem_create_mmap_offset(obj); | |
1d7cfea1 CW |
1498 | if (ret) |
1499 | goto out; | |
de151cf6 JB |
1500 | } |
1501 | ||
1502 | args->offset = obj_priv->mmap_offset; | |
1503 | ||
de151cf6 JB |
1504 | /* |
1505 | * Pull it into the GTT so that we have a page list (makes the | |
1506 | * initial fault faster and any subsequent flushing possible). | |
1507 | */ | |
1508 | if (!obj_priv->agp_mem) { | |
e67b8ce1 | 1509 | ret = i915_gem_object_bind_to_gtt(obj, 0); |
1d7cfea1 CW |
1510 | if (ret) |
1511 | goto out; | |
de151cf6 JB |
1512 | } |
1513 | ||
1d7cfea1 | 1514 | out: |
de151cf6 | 1515 | drm_gem_object_unreference(obj); |
1d7cfea1 | 1516 | unlock: |
de151cf6 | 1517 | mutex_unlock(&dev->struct_mutex); |
1d7cfea1 | 1518 | return ret; |
de151cf6 JB |
1519 | } |
1520 | ||
5cdf5881 | 1521 | static void |
856fa198 | 1522 | i915_gem_object_put_pages(struct drm_gem_object *obj) |
673a394b | 1523 | { |
23010e43 | 1524 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
1525 | int page_count = obj->size / PAGE_SIZE; |
1526 | int i; | |
1527 | ||
856fa198 | 1528 | BUG_ON(obj_priv->pages_refcount == 0); |
bb6baf76 | 1529 | BUG_ON(obj_priv->madv == __I915_MADV_PURGED); |
673a394b | 1530 | |
856fa198 EA |
1531 | if (--obj_priv->pages_refcount != 0) |
1532 | return; | |
673a394b | 1533 | |
280b713b EA |
1534 | if (obj_priv->tiling_mode != I915_TILING_NONE) |
1535 | i915_gem_object_save_bit_17_swizzle(obj); | |
1536 | ||
3ef94daa | 1537 | if (obj_priv->madv == I915_MADV_DONTNEED) |
13a05fd9 | 1538 | obj_priv->dirty = 0; |
3ef94daa CW |
1539 | |
1540 | for (i = 0; i < page_count; i++) { | |
3ef94daa CW |
1541 | if (obj_priv->dirty) |
1542 | set_page_dirty(obj_priv->pages[i]); | |
1543 | ||
1544 | if (obj_priv->madv == I915_MADV_WILLNEED) | |
856fa198 | 1545 | mark_page_accessed(obj_priv->pages[i]); |
3ef94daa CW |
1546 | |
1547 | page_cache_release(obj_priv->pages[i]); | |
1548 | } | |
673a394b EA |
1549 | obj_priv->dirty = 0; |
1550 | ||
8e7d2b2c | 1551 | drm_free_large(obj_priv->pages); |
856fa198 | 1552 | obj_priv->pages = NULL; |
673a394b EA |
1553 | } |
1554 | ||
a56ba56c CW |
1555 | static uint32_t |
1556 | i915_gem_next_request_seqno(struct drm_device *dev, | |
1557 | struct intel_ring_buffer *ring) | |
1558 | { | |
1559 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1560 | ||
1561 | ring->outstanding_lazy_request = true; | |
1562 | return dev_priv->next_seqno; | |
1563 | } | |
1564 | ||
673a394b | 1565 | static void |
617dbe27 | 1566 | i915_gem_object_move_to_active(struct drm_gem_object *obj, |
852835f3 | 1567 | struct intel_ring_buffer *ring) |
673a394b EA |
1568 | { |
1569 | struct drm_device *dev = obj->dev; | |
69dc4987 | 1570 | struct drm_i915_private *dev_priv = dev->dev_private; |
23010e43 | 1571 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
a56ba56c | 1572 | uint32_t seqno = i915_gem_next_request_seqno(dev, ring); |
617dbe27 | 1573 | |
852835f3 ZN |
1574 | BUG_ON(ring == NULL); |
1575 | obj_priv->ring = ring; | |
673a394b EA |
1576 | |
1577 | /* Add a reference if we're newly entering the active list. */ | |
1578 | if (!obj_priv->active) { | |
1579 | drm_gem_object_reference(obj); | |
1580 | obj_priv->active = 1; | |
1581 | } | |
e35a41de | 1582 | |
673a394b | 1583 | /* Move from whatever list we were on to the tail of execution. */ |
69dc4987 CW |
1584 | list_move_tail(&obj_priv->mm_list, &dev_priv->mm.active_list); |
1585 | list_move_tail(&obj_priv->ring_list, &ring->active_list); | |
ce44b0ea | 1586 | obj_priv->last_rendering_seqno = seqno; |
673a394b EA |
1587 | } |
1588 | ||
ce44b0ea EA |
1589 | static void |
1590 | i915_gem_object_move_to_flushing(struct drm_gem_object *obj) | |
1591 | { | |
1592 | struct drm_device *dev = obj->dev; | |
1593 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 1594 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
ce44b0ea EA |
1595 | |
1596 | BUG_ON(!obj_priv->active); | |
69dc4987 CW |
1597 | list_move_tail(&obj_priv->mm_list, &dev_priv->mm.flushing_list); |
1598 | list_del_init(&obj_priv->ring_list); | |
ce44b0ea EA |
1599 | obj_priv->last_rendering_seqno = 0; |
1600 | } | |
673a394b | 1601 | |
963b4836 CW |
1602 | /* Immediately discard the backing storage */ |
1603 | static void | |
1604 | i915_gem_object_truncate(struct drm_gem_object *obj) | |
1605 | { | |
23010e43 | 1606 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
bb6baf76 | 1607 | struct inode *inode; |
963b4836 | 1608 | |
ae9fed6b CW |
1609 | /* Our goal here is to return as much of the memory as |
1610 | * is possible back to the system as we are called from OOM. | |
1611 | * To do this we must instruct the shmfs to drop all of its | |
1612 | * backing pages, *now*. Here we mirror the actions taken | |
1613 | * when by shmem_delete_inode() to release the backing store. | |
1614 | */ | |
bb6baf76 | 1615 | inode = obj->filp->f_path.dentry->d_inode; |
ae9fed6b CW |
1616 | truncate_inode_pages(inode->i_mapping, 0); |
1617 | if (inode->i_op->truncate_range) | |
1618 | inode->i_op->truncate_range(inode, 0, (loff_t)-1); | |
bb6baf76 CW |
1619 | |
1620 | obj_priv->madv = __I915_MADV_PURGED; | |
963b4836 CW |
1621 | } |
1622 | ||
1623 | static inline int | |
1624 | i915_gem_object_is_purgeable(struct drm_i915_gem_object *obj_priv) | |
1625 | { | |
1626 | return obj_priv->madv == I915_MADV_DONTNEED; | |
1627 | } | |
1628 | ||
673a394b EA |
1629 | static void |
1630 | i915_gem_object_move_to_inactive(struct drm_gem_object *obj) | |
1631 | { | |
1632 | struct drm_device *dev = obj->dev; | |
1633 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 1634 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b | 1635 | |
673a394b | 1636 | if (obj_priv->pin_count != 0) |
69dc4987 | 1637 | list_move_tail(&obj_priv->mm_list, &dev_priv->mm.pinned_list); |
673a394b | 1638 | else |
69dc4987 CW |
1639 | list_move_tail(&obj_priv->mm_list, &dev_priv->mm.inactive_list); |
1640 | list_del_init(&obj_priv->ring_list); | |
673a394b | 1641 | |
99fcb766 DV |
1642 | BUG_ON(!list_empty(&obj_priv->gpu_write_list)); |
1643 | ||
ce44b0ea | 1644 | obj_priv->last_rendering_seqno = 0; |
852835f3 | 1645 | obj_priv->ring = NULL; |
673a394b EA |
1646 | if (obj_priv->active) { |
1647 | obj_priv->active = 0; | |
1648 | drm_gem_object_unreference(obj); | |
1649 | } | |
23bc5982 | 1650 | WARN_ON(i915_verify_lists(dev)); |
673a394b EA |
1651 | } |
1652 | ||
63560396 DV |
1653 | static void |
1654 | i915_gem_process_flushing_list(struct drm_device *dev, | |
8a1a49f9 | 1655 | uint32_t flush_domains, |
852835f3 | 1656 | struct intel_ring_buffer *ring) |
63560396 DV |
1657 | { |
1658 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1659 | struct drm_i915_gem_object *obj_priv, *next; | |
1660 | ||
1661 | list_for_each_entry_safe(obj_priv, next, | |
64193406 | 1662 | &ring->gpu_write_list, |
63560396 | 1663 | gpu_write_list) { |
a8089e84 | 1664 | struct drm_gem_object *obj = &obj_priv->base; |
63560396 | 1665 | |
64193406 | 1666 | if (obj->write_domain & flush_domains) { |
63560396 DV |
1667 | uint32_t old_write_domain = obj->write_domain; |
1668 | ||
1669 | obj->write_domain = 0; | |
1670 | list_del_init(&obj_priv->gpu_write_list); | |
617dbe27 | 1671 | i915_gem_object_move_to_active(obj, ring); |
63560396 DV |
1672 | |
1673 | /* update the fence lru list */ | |
007cc8ac DV |
1674 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) { |
1675 | struct drm_i915_fence_reg *reg = | |
1676 | &dev_priv->fence_regs[obj_priv->fence_reg]; | |
1677 | list_move_tail(®->lru_list, | |
63560396 | 1678 | &dev_priv->mm.fence_list); |
007cc8ac | 1679 | } |
63560396 DV |
1680 | |
1681 | trace_i915_gem_object_change_domain(obj, | |
1682 | obj->read_domains, | |
1683 | old_write_domain); | |
1684 | } | |
1685 | } | |
1686 | } | |
8187a2b7 | 1687 | |
3cce469c | 1688 | int |
8a1a49f9 | 1689 | i915_add_request(struct drm_device *dev, |
f787a5f5 | 1690 | struct drm_file *file, |
8dc5d147 | 1691 | struct drm_i915_gem_request *request, |
8a1a49f9 | 1692 | struct intel_ring_buffer *ring) |
673a394b EA |
1693 | { |
1694 | drm_i915_private_t *dev_priv = dev->dev_private; | |
f787a5f5 | 1695 | struct drm_i915_file_private *file_priv = NULL; |
673a394b EA |
1696 | uint32_t seqno; |
1697 | int was_empty; | |
3cce469c CW |
1698 | int ret; |
1699 | ||
1700 | BUG_ON(request == NULL); | |
673a394b | 1701 | |
f787a5f5 CW |
1702 | if (file != NULL) |
1703 | file_priv = file->driver_priv; | |
b962442e | 1704 | |
3cce469c CW |
1705 | ret = ring->add_request(ring, &seqno); |
1706 | if (ret) | |
1707 | return ret; | |
673a394b | 1708 | |
a56ba56c | 1709 | ring->outstanding_lazy_request = false; |
673a394b EA |
1710 | |
1711 | request->seqno = seqno; | |
852835f3 | 1712 | request->ring = ring; |
673a394b | 1713 | request->emitted_jiffies = jiffies; |
852835f3 ZN |
1714 | was_empty = list_empty(&ring->request_list); |
1715 | list_add_tail(&request->list, &ring->request_list); | |
1716 | ||
f787a5f5 | 1717 | if (file_priv) { |
1c25595f | 1718 | spin_lock(&file_priv->mm.lock); |
f787a5f5 | 1719 | request->file_priv = file_priv; |
b962442e | 1720 | list_add_tail(&request->client_list, |
f787a5f5 | 1721 | &file_priv->mm.request_list); |
1c25595f | 1722 | spin_unlock(&file_priv->mm.lock); |
b962442e | 1723 | } |
673a394b | 1724 | |
f65d9421 | 1725 | if (!dev_priv->mm.suspended) { |
b3b079db CW |
1726 | mod_timer(&dev_priv->hangcheck_timer, |
1727 | jiffies + msecs_to_jiffies(DRM_I915_HANGCHECK_PERIOD)); | |
f65d9421 | 1728 | if (was_empty) |
b3b079db CW |
1729 | queue_delayed_work(dev_priv->wq, |
1730 | &dev_priv->mm.retire_work, HZ); | |
f65d9421 | 1731 | } |
3cce469c | 1732 | return 0; |
673a394b EA |
1733 | } |
1734 | ||
1735 | /** | |
1736 | * Command execution barrier | |
1737 | * | |
1738 | * Ensures that all commands in the ring are finished | |
1739 | * before signalling the CPU | |
1740 | */ | |
8a1a49f9 | 1741 | static void |
852835f3 | 1742 | i915_retire_commands(struct drm_device *dev, struct intel_ring_buffer *ring) |
673a394b | 1743 | { |
673a394b | 1744 | uint32_t flush_domains = 0; |
673a394b EA |
1745 | |
1746 | /* The sampler always gets flushed on i965 (sigh) */ | |
a6c45cf0 | 1747 | if (INTEL_INFO(dev)->gen >= 4) |
673a394b | 1748 | flush_domains |= I915_GEM_DOMAIN_SAMPLER; |
852835f3 | 1749 | |
78501eac | 1750 | ring->flush(ring, I915_GEM_DOMAIN_COMMAND, flush_domains); |
673a394b EA |
1751 | } |
1752 | ||
f787a5f5 CW |
1753 | static inline void |
1754 | i915_gem_request_remove_from_client(struct drm_i915_gem_request *request) | |
673a394b | 1755 | { |
1c25595f | 1756 | struct drm_i915_file_private *file_priv = request->file_priv; |
673a394b | 1757 | |
1c25595f CW |
1758 | if (!file_priv) |
1759 | return; | |
1c5d22f7 | 1760 | |
1c25595f CW |
1761 | spin_lock(&file_priv->mm.lock); |
1762 | list_del(&request->client_list); | |
1763 | request->file_priv = NULL; | |
1764 | spin_unlock(&file_priv->mm.lock); | |
673a394b | 1765 | } |
673a394b | 1766 | |
dfaae392 CW |
1767 | static void i915_gem_reset_ring_lists(struct drm_i915_private *dev_priv, |
1768 | struct intel_ring_buffer *ring) | |
9375e446 | 1769 | { |
dfaae392 CW |
1770 | while (!list_empty(&ring->request_list)) { |
1771 | struct drm_i915_gem_request *request; | |
673a394b | 1772 | |
dfaae392 CW |
1773 | request = list_first_entry(&ring->request_list, |
1774 | struct drm_i915_gem_request, | |
1775 | list); | |
de151cf6 | 1776 | |
dfaae392 | 1777 | list_del(&request->list); |
f787a5f5 | 1778 | i915_gem_request_remove_from_client(request); |
dfaae392 CW |
1779 | kfree(request); |
1780 | } | |
673a394b | 1781 | |
dfaae392 | 1782 | while (!list_empty(&ring->active_list)) { |
9375e446 CW |
1783 | struct drm_i915_gem_object *obj_priv; |
1784 | ||
dfaae392 | 1785 | obj_priv = list_first_entry(&ring->active_list, |
9375e446 | 1786 | struct drm_i915_gem_object, |
69dc4987 | 1787 | ring_list); |
9375e446 CW |
1788 | |
1789 | obj_priv->base.write_domain = 0; | |
dfaae392 | 1790 | list_del_init(&obj_priv->gpu_write_list); |
9375e446 | 1791 | i915_gem_object_move_to_inactive(&obj_priv->base); |
673a394b EA |
1792 | } |
1793 | } | |
1794 | ||
069efc1d | 1795 | void i915_gem_reset(struct drm_device *dev) |
673a394b | 1796 | { |
77f01230 CW |
1797 | struct drm_i915_private *dev_priv = dev->dev_private; |
1798 | struct drm_i915_gem_object *obj_priv; | |
069efc1d | 1799 | int i; |
673a394b | 1800 | |
dfaae392 | 1801 | i915_gem_reset_ring_lists(dev_priv, &dev_priv->render_ring); |
87acb0a5 | 1802 | i915_gem_reset_ring_lists(dev_priv, &dev_priv->bsd_ring); |
549f7365 | 1803 | i915_gem_reset_ring_lists(dev_priv, &dev_priv->blt_ring); |
dfaae392 CW |
1804 | |
1805 | /* Remove anything from the flushing lists. The GPU cache is likely | |
1806 | * to be lost on reset along with the data, so simply move the | |
1807 | * lost bo to the inactive list. | |
1808 | */ | |
1809 | while (!list_empty(&dev_priv->mm.flushing_list)) { | |
1810 | obj_priv = list_first_entry(&dev_priv->mm.flushing_list, | |
1811 | struct drm_i915_gem_object, | |
69dc4987 | 1812 | mm_list); |
dfaae392 CW |
1813 | |
1814 | obj_priv->base.write_domain = 0; | |
1815 | list_del_init(&obj_priv->gpu_write_list); | |
1816 | i915_gem_object_move_to_inactive(&obj_priv->base); | |
1817 | } | |
1818 | ||
1819 | /* Move everything out of the GPU domains to ensure we do any | |
1820 | * necessary invalidation upon reuse. | |
1821 | */ | |
77f01230 CW |
1822 | list_for_each_entry(obj_priv, |
1823 | &dev_priv->mm.inactive_list, | |
69dc4987 | 1824 | mm_list) |
77f01230 CW |
1825 | { |
1826 | obj_priv->base.read_domains &= ~I915_GEM_GPU_DOMAINS; | |
1827 | } | |
069efc1d CW |
1828 | |
1829 | /* The fence registers are invalidated so clear them out */ | |
1830 | for (i = 0; i < 16; i++) { | |
1831 | struct drm_i915_fence_reg *reg; | |
1832 | ||
1833 | reg = &dev_priv->fence_regs[i]; | |
1834 | if (!reg->obj) | |
1835 | continue; | |
1836 | ||
1837 | i915_gem_clear_fence_reg(reg->obj); | |
1838 | } | |
673a394b EA |
1839 | } |
1840 | ||
1841 | /** | |
1842 | * This function clears the request list as sequence numbers are passed. | |
1843 | */ | |
b09a1fec CW |
1844 | static void |
1845 | i915_gem_retire_requests_ring(struct drm_device *dev, | |
1846 | struct intel_ring_buffer *ring) | |
673a394b EA |
1847 | { |
1848 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1849 | uint32_t seqno; | |
1850 | ||
b84d5f0c CW |
1851 | if (!ring->status_page.page_addr || |
1852 | list_empty(&ring->request_list)) | |
6c0594a3 KW |
1853 | return; |
1854 | ||
23bc5982 | 1855 | WARN_ON(i915_verify_lists(dev)); |
673a394b | 1856 | |
78501eac | 1857 | seqno = ring->get_seqno(ring); |
852835f3 | 1858 | while (!list_empty(&ring->request_list)) { |
673a394b | 1859 | struct drm_i915_gem_request *request; |
673a394b | 1860 | |
852835f3 | 1861 | request = list_first_entry(&ring->request_list, |
673a394b EA |
1862 | struct drm_i915_gem_request, |
1863 | list); | |
673a394b | 1864 | |
dfaae392 | 1865 | if (!i915_seqno_passed(seqno, request->seqno)) |
b84d5f0c CW |
1866 | break; |
1867 | ||
1868 | trace_i915_gem_request_retire(dev, request->seqno); | |
1869 | ||
1870 | list_del(&request->list); | |
f787a5f5 | 1871 | i915_gem_request_remove_from_client(request); |
b84d5f0c CW |
1872 | kfree(request); |
1873 | } | |
673a394b | 1874 | |
b84d5f0c CW |
1875 | /* Move any buffers on the active list that are no longer referenced |
1876 | * by the ringbuffer to the flushing/inactive lists as appropriate. | |
1877 | */ | |
1878 | while (!list_empty(&ring->active_list)) { | |
1879 | struct drm_gem_object *obj; | |
1880 | struct drm_i915_gem_object *obj_priv; | |
1881 | ||
1882 | obj_priv = list_first_entry(&ring->active_list, | |
1883 | struct drm_i915_gem_object, | |
69dc4987 | 1884 | ring_list); |
673a394b | 1885 | |
dfaae392 | 1886 | if (!i915_seqno_passed(seqno, obj_priv->last_rendering_seqno)) |
673a394b | 1887 | break; |
b84d5f0c CW |
1888 | |
1889 | obj = &obj_priv->base; | |
b84d5f0c CW |
1890 | if (obj->write_domain != 0) |
1891 | i915_gem_object_move_to_flushing(obj); | |
1892 | else | |
1893 | i915_gem_object_move_to_inactive(obj); | |
673a394b | 1894 | } |
9d34e5db CW |
1895 | |
1896 | if (unlikely (dev_priv->trace_irq_seqno && | |
1897 | i915_seqno_passed(dev_priv->trace_irq_seqno, seqno))) { | |
78501eac | 1898 | ring->user_irq_put(ring); |
9d34e5db CW |
1899 | dev_priv->trace_irq_seqno = 0; |
1900 | } | |
23bc5982 CW |
1901 | |
1902 | WARN_ON(i915_verify_lists(dev)); | |
673a394b EA |
1903 | } |
1904 | ||
b09a1fec CW |
1905 | void |
1906 | i915_gem_retire_requests(struct drm_device *dev) | |
1907 | { | |
1908 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1909 | ||
be72615b CW |
1910 | if (!list_empty(&dev_priv->mm.deferred_free_list)) { |
1911 | struct drm_i915_gem_object *obj_priv, *tmp; | |
1912 | ||
1913 | /* We must be careful that during unbind() we do not | |
1914 | * accidentally infinitely recurse into retire requests. | |
1915 | * Currently: | |
1916 | * retire -> free -> unbind -> wait -> retire_ring | |
1917 | */ | |
1918 | list_for_each_entry_safe(obj_priv, tmp, | |
1919 | &dev_priv->mm.deferred_free_list, | |
69dc4987 | 1920 | mm_list) |
be72615b CW |
1921 | i915_gem_free_object_tail(&obj_priv->base); |
1922 | } | |
1923 | ||
b09a1fec | 1924 | i915_gem_retire_requests_ring(dev, &dev_priv->render_ring); |
87acb0a5 | 1925 | i915_gem_retire_requests_ring(dev, &dev_priv->bsd_ring); |
549f7365 | 1926 | i915_gem_retire_requests_ring(dev, &dev_priv->blt_ring); |
b09a1fec CW |
1927 | } |
1928 | ||
75ef9da2 | 1929 | static void |
673a394b EA |
1930 | i915_gem_retire_work_handler(struct work_struct *work) |
1931 | { | |
1932 | drm_i915_private_t *dev_priv; | |
1933 | struct drm_device *dev; | |
1934 | ||
1935 | dev_priv = container_of(work, drm_i915_private_t, | |
1936 | mm.retire_work.work); | |
1937 | dev = dev_priv->dev; | |
1938 | ||
891b48cf CW |
1939 | /* Come back later if the device is busy... */ |
1940 | if (!mutex_trylock(&dev->struct_mutex)) { | |
1941 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, HZ); | |
1942 | return; | |
1943 | } | |
1944 | ||
b09a1fec | 1945 | i915_gem_retire_requests(dev); |
d1b851fc | 1946 | |
6dbe2772 | 1947 | if (!dev_priv->mm.suspended && |
d1b851fc | 1948 | (!list_empty(&dev_priv->render_ring.request_list) || |
549f7365 CW |
1949 | !list_empty(&dev_priv->bsd_ring.request_list) || |
1950 | !list_empty(&dev_priv->blt_ring.request_list))) | |
9c9fe1f8 | 1951 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, HZ); |
673a394b EA |
1952 | mutex_unlock(&dev->struct_mutex); |
1953 | } | |
1954 | ||
5a5a0c64 | 1955 | int |
852835f3 | 1956 | i915_do_wait_request(struct drm_device *dev, uint32_t seqno, |
8a1a49f9 | 1957 | bool interruptible, struct intel_ring_buffer *ring) |
673a394b EA |
1958 | { |
1959 | drm_i915_private_t *dev_priv = dev->dev_private; | |
802c7eb6 | 1960 | u32 ier; |
673a394b EA |
1961 | int ret = 0; |
1962 | ||
1963 | BUG_ON(seqno == 0); | |
1964 | ||
ba1234d1 | 1965 | if (atomic_read(&dev_priv->mm.wedged)) |
30dbf0c0 CW |
1966 | return -EAGAIN; |
1967 | ||
a56ba56c | 1968 | if (ring->outstanding_lazy_request) { |
3cce469c CW |
1969 | struct drm_i915_gem_request *request; |
1970 | ||
1971 | request = kzalloc(sizeof(*request), GFP_KERNEL); | |
1972 | if (request == NULL) | |
e35a41de | 1973 | return -ENOMEM; |
3cce469c CW |
1974 | |
1975 | ret = i915_add_request(dev, NULL, request, ring); | |
1976 | if (ret) { | |
1977 | kfree(request); | |
1978 | return ret; | |
1979 | } | |
1980 | ||
1981 | seqno = request->seqno; | |
e35a41de | 1982 | } |
a56ba56c | 1983 | BUG_ON(seqno == dev_priv->next_seqno); |
ffed1d09 | 1984 | |
78501eac | 1985 | if (!i915_seqno_passed(ring->get_seqno(ring), seqno)) { |
bad720ff | 1986 | if (HAS_PCH_SPLIT(dev)) |
036a4a7d ZW |
1987 | ier = I915_READ(DEIER) | I915_READ(GTIER); |
1988 | else | |
1989 | ier = I915_READ(IER); | |
802c7eb6 JB |
1990 | if (!ier) { |
1991 | DRM_ERROR("something (likely vbetool) disabled " | |
1992 | "interrupts, re-enabling\n"); | |
1993 | i915_driver_irq_preinstall(dev); | |
1994 | i915_driver_irq_postinstall(dev); | |
1995 | } | |
1996 | ||
1c5d22f7 CW |
1997 | trace_i915_gem_request_wait_begin(dev, seqno); |
1998 | ||
b2223497 | 1999 | ring->waiting_seqno = seqno; |
78501eac | 2000 | ring->user_irq_get(ring); |
48764bf4 | 2001 | if (interruptible) |
852835f3 | 2002 | ret = wait_event_interruptible(ring->irq_queue, |
78501eac | 2003 | i915_seqno_passed(ring->get_seqno(ring), seqno) |
852835f3 | 2004 | || atomic_read(&dev_priv->mm.wedged)); |
48764bf4 | 2005 | else |
852835f3 | 2006 | wait_event(ring->irq_queue, |
78501eac | 2007 | i915_seqno_passed(ring->get_seqno(ring), seqno) |
852835f3 | 2008 | || atomic_read(&dev_priv->mm.wedged)); |
48764bf4 | 2009 | |
78501eac | 2010 | ring->user_irq_put(ring); |
b2223497 | 2011 | ring->waiting_seqno = 0; |
1c5d22f7 CW |
2012 | |
2013 | trace_i915_gem_request_wait_end(dev, seqno); | |
673a394b | 2014 | } |
ba1234d1 | 2015 | if (atomic_read(&dev_priv->mm.wedged)) |
30dbf0c0 | 2016 | ret = -EAGAIN; |
673a394b EA |
2017 | |
2018 | if (ret && ret != -ERESTARTSYS) | |
8bff917c | 2019 | DRM_ERROR("%s returns %d (awaiting %d at %d, next %d)\n", |
78501eac | 2020 | __func__, ret, seqno, ring->get_seqno(ring), |
8bff917c | 2021 | dev_priv->next_seqno); |
673a394b EA |
2022 | |
2023 | /* Directly dispatch request retiring. While we have the work queue | |
2024 | * to handle this, the waiter on a request often wants an associated | |
2025 | * buffer to have made it to the inactive list, and we would need | |
2026 | * a separate wait queue to handle that. | |
2027 | */ | |
2028 | if (ret == 0) | |
b09a1fec | 2029 | i915_gem_retire_requests_ring(dev, ring); |
673a394b EA |
2030 | |
2031 | return ret; | |
2032 | } | |
2033 | ||
48764bf4 DV |
2034 | /** |
2035 | * Waits for a sequence number to be signaled, and cleans up the | |
2036 | * request and object lists appropriately for that event. | |
2037 | */ | |
2038 | static int | |
852835f3 | 2039 | i915_wait_request(struct drm_device *dev, uint32_t seqno, |
a56ba56c | 2040 | struct intel_ring_buffer *ring) |
48764bf4 | 2041 | { |
852835f3 | 2042 | return i915_do_wait_request(dev, seqno, 1, ring); |
48764bf4 DV |
2043 | } |
2044 | ||
20f0cd55 | 2045 | static void |
9220434a | 2046 | i915_gem_flush_ring(struct drm_device *dev, |
c78ec30b | 2047 | struct drm_file *file_priv, |
9220434a CW |
2048 | struct intel_ring_buffer *ring, |
2049 | uint32_t invalidate_domains, | |
2050 | uint32_t flush_domains) | |
2051 | { | |
78501eac | 2052 | ring->flush(ring, invalidate_domains, flush_domains); |
9220434a CW |
2053 | i915_gem_process_flushing_list(dev, flush_domains, ring); |
2054 | } | |
2055 | ||
8187a2b7 ZN |
2056 | static void |
2057 | i915_gem_flush(struct drm_device *dev, | |
c78ec30b | 2058 | struct drm_file *file_priv, |
8187a2b7 | 2059 | uint32_t invalidate_domains, |
9220434a CW |
2060 | uint32_t flush_domains, |
2061 | uint32_t flush_rings) | |
8187a2b7 ZN |
2062 | { |
2063 | drm_i915_private_t *dev_priv = dev->dev_private; | |
8bff917c | 2064 | |
8187a2b7 ZN |
2065 | if (flush_domains & I915_GEM_DOMAIN_CPU) |
2066 | drm_agp_chipset_flush(dev); | |
8bff917c | 2067 | |
9220434a CW |
2068 | if ((flush_domains | invalidate_domains) & I915_GEM_GPU_DOMAINS) { |
2069 | if (flush_rings & RING_RENDER) | |
c78ec30b | 2070 | i915_gem_flush_ring(dev, file_priv, |
9220434a CW |
2071 | &dev_priv->render_ring, |
2072 | invalidate_domains, flush_domains); | |
2073 | if (flush_rings & RING_BSD) | |
c78ec30b | 2074 | i915_gem_flush_ring(dev, file_priv, |
9220434a CW |
2075 | &dev_priv->bsd_ring, |
2076 | invalidate_domains, flush_domains); | |
549f7365 CW |
2077 | if (flush_rings & RING_BLT) |
2078 | i915_gem_flush_ring(dev, file_priv, | |
2079 | &dev_priv->blt_ring, | |
2080 | invalidate_domains, flush_domains); | |
9220434a | 2081 | } |
8187a2b7 ZN |
2082 | } |
2083 | ||
673a394b EA |
2084 | /** |
2085 | * Ensures that all rendering to the object has completed and the object is | |
2086 | * safe to unbind from the GTT or access from the CPU. | |
2087 | */ | |
2088 | static int | |
2cf34d7b CW |
2089 | i915_gem_object_wait_rendering(struct drm_gem_object *obj, |
2090 | bool interruptible) | |
673a394b EA |
2091 | { |
2092 | struct drm_device *dev = obj->dev; | |
23010e43 | 2093 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
2094 | int ret; |
2095 | ||
e47c68e9 EA |
2096 | /* This function only exists to support waiting for existing rendering, |
2097 | * not for emitting required flushes. | |
673a394b | 2098 | */ |
e47c68e9 | 2099 | BUG_ON((obj->write_domain & I915_GEM_GPU_DOMAINS) != 0); |
673a394b EA |
2100 | |
2101 | /* If there is rendering queued on the buffer being evicted, wait for | |
2102 | * it. | |
2103 | */ | |
2104 | if (obj_priv->active) { | |
2cf34d7b CW |
2105 | ret = i915_do_wait_request(dev, |
2106 | obj_priv->last_rendering_seqno, | |
2107 | interruptible, | |
2108 | obj_priv->ring); | |
2109 | if (ret) | |
673a394b EA |
2110 | return ret; |
2111 | } | |
2112 | ||
2113 | return 0; | |
2114 | } | |
2115 | ||
2116 | /** | |
2117 | * Unbinds an object from the GTT aperture. | |
2118 | */ | |
0f973f27 | 2119 | int |
673a394b EA |
2120 | i915_gem_object_unbind(struct drm_gem_object *obj) |
2121 | { | |
2122 | struct drm_device *dev = obj->dev; | |
73aa808f | 2123 | struct drm_i915_private *dev_priv = dev->dev_private; |
23010e43 | 2124 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
2125 | int ret = 0; |
2126 | ||
673a394b EA |
2127 | if (obj_priv->gtt_space == NULL) |
2128 | return 0; | |
2129 | ||
2130 | if (obj_priv->pin_count != 0) { | |
2131 | DRM_ERROR("Attempting to unbind pinned buffer\n"); | |
2132 | return -EINVAL; | |
2133 | } | |
2134 | ||
5323fd04 EA |
2135 | /* blow away mappings if mapped through GTT */ |
2136 | i915_gem_release_mmap(obj); | |
2137 | ||
673a394b EA |
2138 | /* Move the object to the CPU domain to ensure that |
2139 | * any possible CPU writes while it's not in the GTT | |
2140 | * are flushed when we go to remap it. This will | |
2141 | * also ensure that all pending GPU writes are finished | |
2142 | * before we unbind. | |
2143 | */ | |
e47c68e9 | 2144 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
8dc1775d | 2145 | if (ret == -ERESTARTSYS) |
673a394b | 2146 | return ret; |
8dc1775d CW |
2147 | /* Continue on if we fail due to EIO, the GPU is hung so we |
2148 | * should be safe and we need to cleanup or else we might | |
2149 | * cause memory corruption through use-after-free. | |
2150 | */ | |
812ed492 CW |
2151 | if (ret) { |
2152 | i915_gem_clflush_object(obj); | |
2153 | obj->read_domains = obj->write_domain = I915_GEM_DOMAIN_CPU; | |
2154 | } | |
673a394b | 2155 | |
96b47b65 DV |
2156 | /* release the fence reg _after_ flushing */ |
2157 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) | |
2158 | i915_gem_clear_fence_reg(obj); | |
2159 | ||
73aa808f CW |
2160 | drm_unbind_agp(obj_priv->agp_mem); |
2161 | drm_free_agp(obj_priv->agp_mem, obj->size / PAGE_SIZE); | |
673a394b | 2162 | |
856fa198 | 2163 | i915_gem_object_put_pages(obj); |
a32808c0 | 2164 | BUG_ON(obj_priv->pages_refcount); |
673a394b | 2165 | |
73aa808f | 2166 | i915_gem_info_remove_gtt(dev_priv, obj->size); |
69dc4987 | 2167 | list_del_init(&obj_priv->mm_list); |
673a394b | 2168 | |
73aa808f CW |
2169 | drm_mm_put_block(obj_priv->gtt_space); |
2170 | obj_priv->gtt_space = NULL; | |
9af90d19 | 2171 | obj_priv->gtt_offset = 0; |
673a394b | 2172 | |
963b4836 CW |
2173 | if (i915_gem_object_is_purgeable(obj_priv)) |
2174 | i915_gem_object_truncate(obj); | |
2175 | ||
1c5d22f7 CW |
2176 | trace_i915_gem_object_unbind(obj); |
2177 | ||
8dc1775d | 2178 | return ret; |
673a394b EA |
2179 | } |
2180 | ||
a56ba56c CW |
2181 | static int i915_ring_idle(struct drm_device *dev, |
2182 | struct intel_ring_buffer *ring) | |
2183 | { | |
64193406 CW |
2184 | if (list_empty(&ring->gpu_write_list)) |
2185 | return 0; | |
2186 | ||
a56ba56c CW |
2187 | i915_gem_flush_ring(dev, NULL, ring, |
2188 | I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); | |
2189 | return i915_wait_request(dev, | |
2190 | i915_gem_next_request_seqno(dev, ring), | |
2191 | ring); | |
2192 | } | |
2193 | ||
b47eb4a2 | 2194 | int |
4df2faf4 DV |
2195 | i915_gpu_idle(struct drm_device *dev) |
2196 | { | |
2197 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2198 | bool lists_empty; | |
852835f3 | 2199 | int ret; |
4df2faf4 | 2200 | |
d1b851fc ZN |
2201 | lists_empty = (list_empty(&dev_priv->mm.flushing_list) && |
2202 | list_empty(&dev_priv->render_ring.active_list) && | |
549f7365 CW |
2203 | list_empty(&dev_priv->bsd_ring.active_list) && |
2204 | list_empty(&dev_priv->blt_ring.active_list)); | |
4df2faf4 DV |
2205 | if (lists_empty) |
2206 | return 0; | |
2207 | ||
2208 | /* Flush everything onto the inactive list. */ | |
a56ba56c | 2209 | ret = i915_ring_idle(dev, &dev_priv->render_ring); |
8a1a49f9 DV |
2210 | if (ret) |
2211 | return ret; | |
d1b851fc | 2212 | |
87acb0a5 CW |
2213 | ret = i915_ring_idle(dev, &dev_priv->bsd_ring); |
2214 | if (ret) | |
2215 | return ret; | |
d1b851fc | 2216 | |
549f7365 CW |
2217 | ret = i915_ring_idle(dev, &dev_priv->blt_ring); |
2218 | if (ret) | |
2219 | return ret; | |
4df2faf4 | 2220 | |
8a1a49f9 | 2221 | return 0; |
4df2faf4 DV |
2222 | } |
2223 | ||
5cdf5881 | 2224 | static int |
4bdadb97 CW |
2225 | i915_gem_object_get_pages(struct drm_gem_object *obj, |
2226 | gfp_t gfpmask) | |
673a394b | 2227 | { |
23010e43 | 2228 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
2229 | int page_count, i; |
2230 | struct address_space *mapping; | |
2231 | struct inode *inode; | |
2232 | struct page *page; | |
673a394b | 2233 | |
778c3544 DV |
2234 | BUG_ON(obj_priv->pages_refcount |
2235 | == DRM_I915_GEM_OBJECT_MAX_PAGES_REFCOUNT); | |
2236 | ||
856fa198 | 2237 | if (obj_priv->pages_refcount++ != 0) |
673a394b EA |
2238 | return 0; |
2239 | ||
2240 | /* Get the list of pages out of our struct file. They'll be pinned | |
2241 | * at this point until we release them. | |
2242 | */ | |
2243 | page_count = obj->size / PAGE_SIZE; | |
856fa198 | 2244 | BUG_ON(obj_priv->pages != NULL); |
8e7d2b2c | 2245 | obj_priv->pages = drm_calloc_large(page_count, sizeof(struct page *)); |
856fa198 | 2246 | if (obj_priv->pages == NULL) { |
856fa198 | 2247 | obj_priv->pages_refcount--; |
673a394b EA |
2248 | return -ENOMEM; |
2249 | } | |
2250 | ||
2251 | inode = obj->filp->f_path.dentry->d_inode; | |
2252 | mapping = inode->i_mapping; | |
2253 | for (i = 0; i < page_count; i++) { | |
4bdadb97 | 2254 | page = read_cache_page_gfp(mapping, i, |
985b823b | 2255 | GFP_HIGHUSER | |
4bdadb97 | 2256 | __GFP_COLD | |
cd9f040d | 2257 | __GFP_RECLAIMABLE | |
4bdadb97 | 2258 | gfpmask); |
1f2b1013 CW |
2259 | if (IS_ERR(page)) |
2260 | goto err_pages; | |
2261 | ||
856fa198 | 2262 | obj_priv->pages[i] = page; |
673a394b | 2263 | } |
280b713b EA |
2264 | |
2265 | if (obj_priv->tiling_mode != I915_TILING_NONE) | |
2266 | i915_gem_object_do_bit_17_swizzle(obj); | |
2267 | ||
673a394b | 2268 | return 0; |
1f2b1013 CW |
2269 | |
2270 | err_pages: | |
2271 | while (i--) | |
2272 | page_cache_release(obj_priv->pages[i]); | |
2273 | ||
2274 | drm_free_large(obj_priv->pages); | |
2275 | obj_priv->pages = NULL; | |
2276 | obj_priv->pages_refcount--; | |
2277 | return PTR_ERR(page); | |
673a394b EA |
2278 | } |
2279 | ||
4e901fdc EA |
2280 | static void sandybridge_write_fence_reg(struct drm_i915_fence_reg *reg) |
2281 | { | |
2282 | struct drm_gem_object *obj = reg->obj; | |
2283 | struct drm_device *dev = obj->dev; | |
2284 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2285 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
4e901fdc EA |
2286 | int regnum = obj_priv->fence_reg; |
2287 | uint64_t val; | |
2288 | ||
2289 | val = (uint64_t)((obj_priv->gtt_offset + obj->size - 4096) & | |
2290 | 0xfffff000) << 32; | |
2291 | val |= obj_priv->gtt_offset & 0xfffff000; | |
2292 | val |= (uint64_t)((obj_priv->stride / 128) - 1) << | |
2293 | SANDYBRIDGE_FENCE_PITCH_SHIFT; | |
2294 | ||
2295 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2296 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; | |
2297 | val |= I965_FENCE_REG_VALID; | |
2298 | ||
2299 | I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + (regnum * 8), val); | |
2300 | } | |
2301 | ||
de151cf6 JB |
2302 | static void i965_write_fence_reg(struct drm_i915_fence_reg *reg) |
2303 | { | |
2304 | struct drm_gem_object *obj = reg->obj; | |
2305 | struct drm_device *dev = obj->dev; | |
2306 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2307 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
2308 | int regnum = obj_priv->fence_reg; |
2309 | uint64_t val; | |
2310 | ||
2311 | val = (uint64_t)((obj_priv->gtt_offset + obj->size - 4096) & | |
2312 | 0xfffff000) << 32; | |
2313 | val |= obj_priv->gtt_offset & 0xfffff000; | |
2314 | val |= ((obj_priv->stride / 128) - 1) << I965_FENCE_PITCH_SHIFT; | |
2315 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2316 | val |= 1 << I965_FENCE_TILING_Y_SHIFT; | |
2317 | val |= I965_FENCE_REG_VALID; | |
2318 | ||
2319 | I915_WRITE64(FENCE_REG_965_0 + (regnum * 8), val); | |
2320 | } | |
2321 | ||
2322 | static void i915_write_fence_reg(struct drm_i915_fence_reg *reg) | |
2323 | { | |
2324 | struct drm_gem_object *obj = reg->obj; | |
2325 | struct drm_device *dev = obj->dev; | |
2326 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2327 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 | 2328 | int regnum = obj_priv->fence_reg; |
0f973f27 | 2329 | int tile_width; |
dc529a4f | 2330 | uint32_t fence_reg, val; |
de151cf6 JB |
2331 | uint32_t pitch_val; |
2332 | ||
2333 | if ((obj_priv->gtt_offset & ~I915_FENCE_START_MASK) || | |
2334 | (obj_priv->gtt_offset & (obj->size - 1))) { | |
f06da264 | 2335 | WARN(1, "%s: object 0x%08x not 1M or size (0x%zx) aligned\n", |
0f973f27 | 2336 | __func__, obj_priv->gtt_offset, obj->size); |
de151cf6 JB |
2337 | return; |
2338 | } | |
2339 | ||
0f973f27 JB |
2340 | if (obj_priv->tiling_mode == I915_TILING_Y && |
2341 | HAS_128_BYTE_Y_TILING(dev)) | |
2342 | tile_width = 128; | |
de151cf6 | 2343 | else |
0f973f27 JB |
2344 | tile_width = 512; |
2345 | ||
2346 | /* Note: pitch better be a power of two tile widths */ | |
2347 | pitch_val = obj_priv->stride / tile_width; | |
2348 | pitch_val = ffs(pitch_val) - 1; | |
de151cf6 | 2349 | |
c36a2a6d DV |
2350 | if (obj_priv->tiling_mode == I915_TILING_Y && |
2351 | HAS_128_BYTE_Y_TILING(dev)) | |
2352 | WARN_ON(pitch_val > I830_FENCE_MAX_PITCH_VAL); | |
2353 | else | |
2354 | WARN_ON(pitch_val > I915_FENCE_MAX_PITCH_VAL); | |
2355 | ||
de151cf6 JB |
2356 | val = obj_priv->gtt_offset; |
2357 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2358 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; | |
2359 | val |= I915_FENCE_SIZE_BITS(obj->size); | |
2360 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; | |
2361 | val |= I830_FENCE_REG_VALID; | |
2362 | ||
dc529a4f EA |
2363 | if (regnum < 8) |
2364 | fence_reg = FENCE_REG_830_0 + (regnum * 4); | |
2365 | else | |
2366 | fence_reg = FENCE_REG_945_8 + ((regnum - 8) * 4); | |
2367 | I915_WRITE(fence_reg, val); | |
de151cf6 JB |
2368 | } |
2369 | ||
2370 | static void i830_write_fence_reg(struct drm_i915_fence_reg *reg) | |
2371 | { | |
2372 | struct drm_gem_object *obj = reg->obj; | |
2373 | struct drm_device *dev = obj->dev; | |
2374 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2375 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 JB |
2376 | int regnum = obj_priv->fence_reg; |
2377 | uint32_t val; | |
2378 | uint32_t pitch_val; | |
8d7773a3 | 2379 | uint32_t fence_size_bits; |
de151cf6 | 2380 | |
8d7773a3 | 2381 | if ((obj_priv->gtt_offset & ~I830_FENCE_START_MASK) || |
de151cf6 | 2382 | (obj_priv->gtt_offset & (obj->size - 1))) { |
8d7773a3 | 2383 | WARN(1, "%s: object 0x%08x not 512K or size aligned\n", |
0f973f27 | 2384 | __func__, obj_priv->gtt_offset); |
de151cf6 JB |
2385 | return; |
2386 | } | |
2387 | ||
e76a16de EA |
2388 | pitch_val = obj_priv->stride / 128; |
2389 | pitch_val = ffs(pitch_val) - 1; | |
2390 | WARN_ON(pitch_val > I830_FENCE_MAX_PITCH_VAL); | |
2391 | ||
de151cf6 JB |
2392 | val = obj_priv->gtt_offset; |
2393 | if (obj_priv->tiling_mode == I915_TILING_Y) | |
2394 | val |= 1 << I830_FENCE_TILING_Y_SHIFT; | |
8d7773a3 DV |
2395 | fence_size_bits = I830_FENCE_SIZE_BITS(obj->size); |
2396 | WARN_ON(fence_size_bits & ~0x00000f00); | |
2397 | val |= fence_size_bits; | |
de151cf6 JB |
2398 | val |= pitch_val << I830_FENCE_PITCH_SHIFT; |
2399 | val |= I830_FENCE_REG_VALID; | |
2400 | ||
2401 | I915_WRITE(FENCE_REG_830_0 + (regnum * 4), val); | |
de151cf6 JB |
2402 | } |
2403 | ||
2cf34d7b CW |
2404 | static int i915_find_fence_reg(struct drm_device *dev, |
2405 | bool interruptible) | |
ae3db24a DV |
2406 | { |
2407 | struct drm_i915_fence_reg *reg = NULL; | |
2408 | struct drm_i915_gem_object *obj_priv = NULL; | |
2409 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2410 | struct drm_gem_object *obj = NULL; | |
2411 | int i, avail, ret; | |
2412 | ||
2413 | /* First try to find a free reg */ | |
2414 | avail = 0; | |
2415 | for (i = dev_priv->fence_reg_start; i < dev_priv->num_fence_regs; i++) { | |
2416 | reg = &dev_priv->fence_regs[i]; | |
2417 | if (!reg->obj) | |
2418 | return i; | |
2419 | ||
23010e43 | 2420 | obj_priv = to_intel_bo(reg->obj); |
ae3db24a DV |
2421 | if (!obj_priv->pin_count) |
2422 | avail++; | |
2423 | } | |
2424 | ||
2425 | if (avail == 0) | |
2426 | return -ENOSPC; | |
2427 | ||
2428 | /* None available, try to steal one or wait for a user to finish */ | |
2429 | i = I915_FENCE_REG_NONE; | |
007cc8ac DV |
2430 | list_for_each_entry(reg, &dev_priv->mm.fence_list, |
2431 | lru_list) { | |
2432 | obj = reg->obj; | |
2433 | obj_priv = to_intel_bo(obj); | |
ae3db24a DV |
2434 | |
2435 | if (obj_priv->pin_count) | |
2436 | continue; | |
2437 | ||
2438 | /* found one! */ | |
2439 | i = obj_priv->fence_reg; | |
2440 | break; | |
2441 | } | |
2442 | ||
2443 | BUG_ON(i == I915_FENCE_REG_NONE); | |
2444 | ||
2445 | /* We only have a reference on obj from the active list. put_fence_reg | |
2446 | * might drop that one, causing a use-after-free in it. So hold a | |
2447 | * private reference to obj like the other callers of put_fence_reg | |
2448 | * (set_tiling ioctl) do. */ | |
2449 | drm_gem_object_reference(obj); | |
2cf34d7b | 2450 | ret = i915_gem_object_put_fence_reg(obj, interruptible); |
ae3db24a DV |
2451 | drm_gem_object_unreference(obj); |
2452 | if (ret != 0) | |
2453 | return ret; | |
2454 | ||
2455 | return i; | |
2456 | } | |
2457 | ||
de151cf6 JB |
2458 | /** |
2459 | * i915_gem_object_get_fence_reg - set up a fence reg for an object | |
2460 | * @obj: object to map through a fence reg | |
2461 | * | |
2462 | * When mapping objects through the GTT, userspace wants to be able to write | |
2463 | * to them without having to worry about swizzling if the object is tiled. | |
2464 | * | |
2465 | * This function walks the fence regs looking for a free one for @obj, | |
2466 | * stealing one if it can't find any. | |
2467 | * | |
2468 | * It then sets up the reg based on the object's properties: address, pitch | |
2469 | * and tiling format. | |
2470 | */ | |
8c4b8c3f | 2471 | int |
2cf34d7b CW |
2472 | i915_gem_object_get_fence_reg(struct drm_gem_object *obj, |
2473 | bool interruptible) | |
de151cf6 JB |
2474 | { |
2475 | struct drm_device *dev = obj->dev; | |
79e53945 | 2476 | struct drm_i915_private *dev_priv = dev->dev_private; |
23010e43 | 2477 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
de151cf6 | 2478 | struct drm_i915_fence_reg *reg = NULL; |
ae3db24a | 2479 | int ret; |
de151cf6 | 2480 | |
a09ba7fa EA |
2481 | /* Just update our place in the LRU if our fence is getting used. */ |
2482 | if (obj_priv->fence_reg != I915_FENCE_REG_NONE) { | |
007cc8ac DV |
2483 | reg = &dev_priv->fence_regs[obj_priv->fence_reg]; |
2484 | list_move_tail(®->lru_list, &dev_priv->mm.fence_list); | |
a09ba7fa EA |
2485 | return 0; |
2486 | } | |
2487 | ||
de151cf6 JB |
2488 | switch (obj_priv->tiling_mode) { |
2489 | case I915_TILING_NONE: | |
2490 | WARN(1, "allocating a fence for non-tiled object?\n"); | |
2491 | break; | |
2492 | case I915_TILING_X: | |
0f973f27 JB |
2493 | if (!obj_priv->stride) |
2494 | return -EINVAL; | |
2495 | WARN((obj_priv->stride & (512 - 1)), | |
2496 | "object 0x%08x is X tiled but has non-512B pitch\n", | |
2497 | obj_priv->gtt_offset); | |
de151cf6 JB |
2498 | break; |
2499 | case I915_TILING_Y: | |
0f973f27 JB |
2500 | if (!obj_priv->stride) |
2501 | return -EINVAL; | |
2502 | WARN((obj_priv->stride & (128 - 1)), | |
2503 | "object 0x%08x is Y tiled but has non-128B pitch\n", | |
2504 | obj_priv->gtt_offset); | |
de151cf6 JB |
2505 | break; |
2506 | } | |
2507 | ||
2cf34d7b | 2508 | ret = i915_find_fence_reg(dev, interruptible); |
ae3db24a DV |
2509 | if (ret < 0) |
2510 | return ret; | |
de151cf6 | 2511 | |
ae3db24a DV |
2512 | obj_priv->fence_reg = ret; |
2513 | reg = &dev_priv->fence_regs[obj_priv->fence_reg]; | |
007cc8ac | 2514 | list_add_tail(®->lru_list, &dev_priv->mm.fence_list); |
a09ba7fa | 2515 | |
de151cf6 JB |
2516 | reg->obj = obj; |
2517 | ||
e259befd CW |
2518 | switch (INTEL_INFO(dev)->gen) { |
2519 | case 6: | |
4e901fdc | 2520 | sandybridge_write_fence_reg(reg); |
e259befd CW |
2521 | break; |
2522 | case 5: | |
2523 | case 4: | |
de151cf6 | 2524 | i965_write_fence_reg(reg); |
e259befd CW |
2525 | break; |
2526 | case 3: | |
de151cf6 | 2527 | i915_write_fence_reg(reg); |
e259befd CW |
2528 | break; |
2529 | case 2: | |
de151cf6 | 2530 | i830_write_fence_reg(reg); |
e259befd CW |
2531 | break; |
2532 | } | |
d9ddcb96 | 2533 | |
ae3db24a DV |
2534 | trace_i915_gem_object_get_fence(obj, obj_priv->fence_reg, |
2535 | obj_priv->tiling_mode); | |
1c5d22f7 | 2536 | |
d9ddcb96 | 2537 | return 0; |
de151cf6 JB |
2538 | } |
2539 | ||
2540 | /** | |
2541 | * i915_gem_clear_fence_reg - clear out fence register info | |
2542 | * @obj: object to clear | |
2543 | * | |
2544 | * Zeroes out the fence register itself and clears out the associated | |
2545 | * data structures in dev_priv and obj_priv. | |
2546 | */ | |
2547 | static void | |
2548 | i915_gem_clear_fence_reg(struct drm_gem_object *obj) | |
2549 | { | |
2550 | struct drm_device *dev = obj->dev; | |
79e53945 | 2551 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 2552 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
007cc8ac DV |
2553 | struct drm_i915_fence_reg *reg = |
2554 | &dev_priv->fence_regs[obj_priv->fence_reg]; | |
e259befd | 2555 | uint32_t fence_reg; |
de151cf6 | 2556 | |
e259befd CW |
2557 | switch (INTEL_INFO(dev)->gen) { |
2558 | case 6: | |
4e901fdc EA |
2559 | I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + |
2560 | (obj_priv->fence_reg * 8), 0); | |
e259befd CW |
2561 | break; |
2562 | case 5: | |
2563 | case 4: | |
de151cf6 | 2564 | I915_WRITE64(FENCE_REG_965_0 + (obj_priv->fence_reg * 8), 0); |
e259befd CW |
2565 | break; |
2566 | case 3: | |
9b74f734 | 2567 | if (obj_priv->fence_reg >= 8) |
e259befd | 2568 | fence_reg = FENCE_REG_945_8 + (obj_priv->fence_reg - 8) * 4; |
dc529a4f | 2569 | else |
e259befd CW |
2570 | case 2: |
2571 | fence_reg = FENCE_REG_830_0 + obj_priv->fence_reg * 4; | |
dc529a4f EA |
2572 | |
2573 | I915_WRITE(fence_reg, 0); | |
e259befd | 2574 | break; |
dc529a4f | 2575 | } |
de151cf6 | 2576 | |
007cc8ac | 2577 | reg->obj = NULL; |
de151cf6 | 2578 | obj_priv->fence_reg = I915_FENCE_REG_NONE; |
007cc8ac | 2579 | list_del_init(®->lru_list); |
de151cf6 JB |
2580 | } |
2581 | ||
52dc7d32 CW |
2582 | /** |
2583 | * i915_gem_object_put_fence_reg - waits on outstanding fenced access | |
2584 | * to the buffer to finish, and then resets the fence register. | |
2585 | * @obj: tiled object holding a fence register. | |
2cf34d7b | 2586 | * @bool: whether the wait upon the fence is interruptible |
52dc7d32 CW |
2587 | * |
2588 | * Zeroes out the fence register itself and clears out the associated | |
2589 | * data structures in dev_priv and obj_priv. | |
2590 | */ | |
2591 | int | |
2cf34d7b CW |
2592 | i915_gem_object_put_fence_reg(struct drm_gem_object *obj, |
2593 | bool interruptible) | |
52dc7d32 CW |
2594 | { |
2595 | struct drm_device *dev = obj->dev; | |
53640e1d | 2596 | struct drm_i915_private *dev_priv = dev->dev_private; |
23010e43 | 2597 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
53640e1d | 2598 | struct drm_i915_fence_reg *reg; |
52dc7d32 CW |
2599 | |
2600 | if (obj_priv->fence_reg == I915_FENCE_REG_NONE) | |
2601 | return 0; | |
2602 | ||
10ae9bd2 DV |
2603 | /* If we've changed tiling, GTT-mappings of the object |
2604 | * need to re-fault to ensure that the correct fence register | |
2605 | * setup is in place. | |
2606 | */ | |
2607 | i915_gem_release_mmap(obj); | |
2608 | ||
52dc7d32 CW |
2609 | /* On the i915, GPU access to tiled buffers is via a fence, |
2610 | * therefore we must wait for any outstanding access to complete | |
2611 | * before clearing the fence. | |
2612 | */ | |
53640e1d CW |
2613 | reg = &dev_priv->fence_regs[obj_priv->fence_reg]; |
2614 | if (reg->gpu) { | |
52dc7d32 CW |
2615 | int ret; |
2616 | ||
2cf34d7b | 2617 | ret = i915_gem_object_flush_gpu_write_domain(obj, true); |
0bc23aad | 2618 | if (ret) |
2dafb1e0 CW |
2619 | return ret; |
2620 | ||
2cf34d7b | 2621 | ret = i915_gem_object_wait_rendering(obj, interruptible); |
0bc23aad | 2622 | if (ret) |
52dc7d32 | 2623 | return ret; |
53640e1d CW |
2624 | |
2625 | reg->gpu = false; | |
52dc7d32 CW |
2626 | } |
2627 | ||
4a726612 | 2628 | i915_gem_object_flush_gtt_write_domain(obj); |
0bc23aad | 2629 | i915_gem_clear_fence_reg(obj); |
52dc7d32 CW |
2630 | |
2631 | return 0; | |
2632 | } | |
2633 | ||
673a394b EA |
2634 | /** |
2635 | * Finds free space in the GTT aperture and binds the object there. | |
2636 | */ | |
2637 | static int | |
2638 | i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment) | |
2639 | { | |
2640 | struct drm_device *dev = obj->dev; | |
2641 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 2642 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b | 2643 | struct drm_mm_node *free_space; |
4bdadb97 | 2644 | gfp_t gfpmask = __GFP_NORETRY | __GFP_NOWARN; |
07f73f69 | 2645 | int ret; |
673a394b | 2646 | |
bb6baf76 | 2647 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
3ef94daa CW |
2648 | DRM_ERROR("Attempting to bind a purgeable object\n"); |
2649 | return -EINVAL; | |
2650 | } | |
2651 | ||
673a394b | 2652 | if (alignment == 0) |
0f973f27 | 2653 | alignment = i915_gem_get_gtt_alignment(obj); |
8d7773a3 | 2654 | if (alignment & (i915_gem_get_gtt_alignment(obj) - 1)) { |
673a394b EA |
2655 | DRM_ERROR("Invalid object alignment requested %u\n", alignment); |
2656 | return -EINVAL; | |
2657 | } | |
2658 | ||
654fc607 CW |
2659 | /* If the object is bigger than the entire aperture, reject it early |
2660 | * before evicting everything in a vain attempt to find space. | |
2661 | */ | |
73aa808f | 2662 | if (obj->size > dev_priv->mm.gtt_total) { |
654fc607 CW |
2663 | DRM_ERROR("Attempting to bind an object larger than the aperture\n"); |
2664 | return -E2BIG; | |
2665 | } | |
2666 | ||
673a394b EA |
2667 | search_free: |
2668 | free_space = drm_mm_search_free(&dev_priv->mm.gtt_space, | |
2669 | obj->size, alignment, 0); | |
9af90d19 | 2670 | if (free_space != NULL) |
673a394b EA |
2671 | obj_priv->gtt_space = drm_mm_get_block(free_space, obj->size, |
2672 | alignment); | |
673a394b EA |
2673 | if (obj_priv->gtt_space == NULL) { |
2674 | /* If the gtt is empty and we're still having trouble | |
2675 | * fitting our object in, we're out of memory. | |
2676 | */ | |
a6e0aa42 | 2677 | ret = i915_gem_evict_something(dev, obj->size, alignment, true); |
9731129c | 2678 | if (ret) |
673a394b | 2679 | return ret; |
9731129c | 2680 | |
673a394b EA |
2681 | goto search_free; |
2682 | } | |
2683 | ||
4bdadb97 | 2684 | ret = i915_gem_object_get_pages(obj, gfpmask); |
673a394b EA |
2685 | if (ret) { |
2686 | drm_mm_put_block(obj_priv->gtt_space); | |
2687 | obj_priv->gtt_space = NULL; | |
07f73f69 CW |
2688 | |
2689 | if (ret == -ENOMEM) { | |
2690 | /* first try to clear up some space from the GTT */ | |
0108a3ed | 2691 | ret = i915_gem_evict_something(dev, obj->size, |
a6e0aa42 | 2692 | alignment, true); |
07f73f69 | 2693 | if (ret) { |
07f73f69 | 2694 | /* now try to shrink everyone else */ |
4bdadb97 CW |
2695 | if (gfpmask) { |
2696 | gfpmask = 0; | |
2697 | goto search_free; | |
07f73f69 CW |
2698 | } |
2699 | ||
2700 | return ret; | |
2701 | } | |
2702 | ||
2703 | goto search_free; | |
2704 | } | |
2705 | ||
673a394b EA |
2706 | return ret; |
2707 | } | |
2708 | ||
673a394b EA |
2709 | /* Create an AGP memory structure pointing at our pages, and bind it |
2710 | * into the GTT. | |
2711 | */ | |
2712 | obj_priv->agp_mem = drm_agp_bind_pages(dev, | |
856fa198 | 2713 | obj_priv->pages, |
07f73f69 | 2714 | obj->size >> PAGE_SHIFT, |
9af90d19 | 2715 | obj_priv->gtt_space->start, |
ba1eb1d8 | 2716 | obj_priv->agp_type); |
673a394b | 2717 | if (obj_priv->agp_mem == NULL) { |
856fa198 | 2718 | i915_gem_object_put_pages(obj); |
673a394b EA |
2719 | drm_mm_put_block(obj_priv->gtt_space); |
2720 | obj_priv->gtt_space = NULL; | |
07f73f69 | 2721 | |
a6e0aa42 | 2722 | ret = i915_gem_evict_something(dev, obj->size, alignment, true); |
9731129c | 2723 | if (ret) |
07f73f69 | 2724 | return ret; |
07f73f69 CW |
2725 | |
2726 | goto search_free; | |
673a394b | 2727 | } |
673a394b | 2728 | |
bf1a1092 | 2729 | /* keep track of bounds object by adding it to the inactive list */ |
69dc4987 | 2730 | list_add_tail(&obj_priv->mm_list, &dev_priv->mm.inactive_list); |
73aa808f | 2731 | i915_gem_info_add_gtt(dev_priv, obj->size); |
bf1a1092 | 2732 | |
673a394b EA |
2733 | /* Assert that the object is not currently in any GPU domain. As it |
2734 | * wasn't in the GTT, there shouldn't be any way it could have been in | |
2735 | * a GPU cache | |
2736 | */ | |
21d509e3 CW |
2737 | BUG_ON(obj->read_domains & I915_GEM_GPU_DOMAINS); |
2738 | BUG_ON(obj->write_domain & I915_GEM_GPU_DOMAINS); | |
673a394b | 2739 | |
9af90d19 | 2740 | obj_priv->gtt_offset = obj_priv->gtt_space->start; |
1c5d22f7 CW |
2741 | trace_i915_gem_object_bind(obj, obj_priv->gtt_offset); |
2742 | ||
673a394b EA |
2743 | return 0; |
2744 | } | |
2745 | ||
2746 | void | |
2747 | i915_gem_clflush_object(struct drm_gem_object *obj) | |
2748 | { | |
23010e43 | 2749 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
2750 | |
2751 | /* If we don't have a page list set up, then we're not pinned | |
2752 | * to GPU, and we can ignore the cache flush because it'll happen | |
2753 | * again at bind time. | |
2754 | */ | |
856fa198 | 2755 | if (obj_priv->pages == NULL) |
673a394b EA |
2756 | return; |
2757 | ||
1c5d22f7 | 2758 | trace_i915_gem_object_clflush(obj); |
cfa16a0d | 2759 | |
856fa198 | 2760 | drm_clflush_pages(obj_priv->pages, obj->size / PAGE_SIZE); |
673a394b EA |
2761 | } |
2762 | ||
e47c68e9 | 2763 | /** Flushes any GPU write domain for the object if it's dirty. */ |
2dafb1e0 | 2764 | static int |
ba3d8d74 DV |
2765 | i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj, |
2766 | bool pipelined) | |
e47c68e9 EA |
2767 | { |
2768 | struct drm_device *dev = obj->dev; | |
1c5d22f7 | 2769 | uint32_t old_write_domain; |
e47c68e9 EA |
2770 | |
2771 | if ((obj->write_domain & I915_GEM_GPU_DOMAINS) == 0) | |
2dafb1e0 | 2772 | return 0; |
e47c68e9 EA |
2773 | |
2774 | /* Queue the GPU write cache flushing we need. */ | |
1c5d22f7 | 2775 | old_write_domain = obj->write_domain; |
c78ec30b | 2776 | i915_gem_flush_ring(dev, NULL, |
9220434a CW |
2777 | to_intel_bo(obj)->ring, |
2778 | 0, obj->write_domain); | |
48b956c5 | 2779 | BUG_ON(obj->write_domain); |
1c5d22f7 CW |
2780 | |
2781 | trace_i915_gem_object_change_domain(obj, | |
2782 | obj->read_domains, | |
2783 | old_write_domain); | |
ba3d8d74 DV |
2784 | |
2785 | if (pipelined) | |
2786 | return 0; | |
2787 | ||
2cf34d7b | 2788 | return i915_gem_object_wait_rendering(obj, true); |
e47c68e9 EA |
2789 | } |
2790 | ||
2791 | /** Flushes the GTT write domain for the object if it's dirty. */ | |
2792 | static void | |
2793 | i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj) | |
2794 | { | |
1c5d22f7 CW |
2795 | uint32_t old_write_domain; |
2796 | ||
e47c68e9 EA |
2797 | if (obj->write_domain != I915_GEM_DOMAIN_GTT) |
2798 | return; | |
2799 | ||
2800 | /* No actual flushing is required for the GTT write domain. Writes | |
2801 | * to it immediately go to main memory as far as we know, so there's | |
2802 | * no chipset flush. It also doesn't land in render cache. | |
2803 | */ | |
1c5d22f7 | 2804 | old_write_domain = obj->write_domain; |
e47c68e9 | 2805 | obj->write_domain = 0; |
1c5d22f7 CW |
2806 | |
2807 | trace_i915_gem_object_change_domain(obj, | |
2808 | obj->read_domains, | |
2809 | old_write_domain); | |
e47c68e9 EA |
2810 | } |
2811 | ||
2812 | /** Flushes the CPU write domain for the object if it's dirty. */ | |
2813 | static void | |
2814 | i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj) | |
2815 | { | |
2816 | struct drm_device *dev = obj->dev; | |
1c5d22f7 | 2817 | uint32_t old_write_domain; |
e47c68e9 EA |
2818 | |
2819 | if (obj->write_domain != I915_GEM_DOMAIN_CPU) | |
2820 | return; | |
2821 | ||
2822 | i915_gem_clflush_object(obj); | |
2823 | drm_agp_chipset_flush(dev); | |
1c5d22f7 | 2824 | old_write_domain = obj->write_domain; |
e47c68e9 | 2825 | obj->write_domain = 0; |
1c5d22f7 CW |
2826 | |
2827 | trace_i915_gem_object_change_domain(obj, | |
2828 | obj->read_domains, | |
2829 | old_write_domain); | |
e47c68e9 EA |
2830 | } |
2831 | ||
2ef7eeaa EA |
2832 | /** |
2833 | * Moves a single object to the GTT read, and possibly write domain. | |
2834 | * | |
2835 | * This function returns when the move is complete, including waiting on | |
2836 | * flushes to occur. | |
2837 | */ | |
79e53945 | 2838 | int |
2ef7eeaa EA |
2839 | i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj, int write) |
2840 | { | |
23010e43 | 2841 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
1c5d22f7 | 2842 | uint32_t old_write_domain, old_read_domains; |
e47c68e9 | 2843 | int ret; |
2ef7eeaa | 2844 | |
02354392 EA |
2845 | /* Not valid to be called on unbound objects. */ |
2846 | if (obj_priv->gtt_space == NULL) | |
2847 | return -EINVAL; | |
2848 | ||
ba3d8d74 | 2849 | ret = i915_gem_object_flush_gpu_write_domain(obj, false); |
2dafb1e0 CW |
2850 | if (ret != 0) |
2851 | return ret; | |
2852 | ||
7213342d | 2853 | i915_gem_object_flush_cpu_write_domain(obj); |
1c5d22f7 | 2854 | |
ba3d8d74 | 2855 | if (write) { |
2cf34d7b | 2856 | ret = i915_gem_object_wait_rendering(obj, true); |
ba3d8d74 DV |
2857 | if (ret) |
2858 | return ret; | |
ba3d8d74 | 2859 | } |
e47c68e9 | 2860 | |
1c5d22f7 CW |
2861 | old_write_domain = obj->write_domain; |
2862 | old_read_domains = obj->read_domains; | |
2863 | ||
e47c68e9 EA |
2864 | /* It should now be out of any other write domains, and we can update |
2865 | * the domain values for our changes. | |
2866 | */ | |
2867 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_GTT) != 0); | |
2868 | obj->read_domains |= I915_GEM_DOMAIN_GTT; | |
2869 | if (write) { | |
7213342d | 2870 | obj->read_domains = I915_GEM_DOMAIN_GTT; |
e47c68e9 EA |
2871 | obj->write_domain = I915_GEM_DOMAIN_GTT; |
2872 | obj_priv->dirty = 1; | |
2ef7eeaa EA |
2873 | } |
2874 | ||
1c5d22f7 CW |
2875 | trace_i915_gem_object_change_domain(obj, |
2876 | old_read_domains, | |
2877 | old_write_domain); | |
2878 | ||
e47c68e9 EA |
2879 | return 0; |
2880 | } | |
2881 | ||
b9241ea3 ZW |
2882 | /* |
2883 | * Prepare buffer for display plane. Use uninterruptible for possible flush | |
2884 | * wait, as in modesetting process we're not supposed to be interrupted. | |
2885 | */ | |
2886 | int | |
48b956c5 CW |
2887 | i915_gem_object_set_to_display_plane(struct drm_gem_object *obj, |
2888 | bool pipelined) | |
b9241ea3 | 2889 | { |
23010e43 | 2890 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
ba3d8d74 | 2891 | uint32_t old_read_domains; |
b9241ea3 ZW |
2892 | int ret; |
2893 | ||
2894 | /* Not valid to be called on unbound objects. */ | |
2895 | if (obj_priv->gtt_space == NULL) | |
2896 | return -EINVAL; | |
2897 | ||
ced270fa | 2898 | ret = i915_gem_object_flush_gpu_write_domain(obj, true); |
2dafb1e0 CW |
2899 | if (ret) |
2900 | return ret; | |
b9241ea3 | 2901 | |
ced270fa CW |
2902 | /* Currently, we are always called from an non-interruptible context. */ |
2903 | if (!pipelined) { | |
2904 | ret = i915_gem_object_wait_rendering(obj, false); | |
2905 | if (ret) | |
b9241ea3 ZW |
2906 | return ret; |
2907 | } | |
2908 | ||
b118c1e3 CW |
2909 | i915_gem_object_flush_cpu_write_domain(obj); |
2910 | ||
b9241ea3 | 2911 | old_read_domains = obj->read_domains; |
c78ec30b | 2912 | obj->read_domains |= I915_GEM_DOMAIN_GTT; |
b9241ea3 ZW |
2913 | |
2914 | trace_i915_gem_object_change_domain(obj, | |
2915 | old_read_domains, | |
ba3d8d74 | 2916 | obj->write_domain); |
b9241ea3 ZW |
2917 | |
2918 | return 0; | |
2919 | } | |
2920 | ||
e47c68e9 EA |
2921 | /** |
2922 | * Moves a single object to the CPU read, and possibly write domain. | |
2923 | * | |
2924 | * This function returns when the move is complete, including waiting on | |
2925 | * flushes to occur. | |
2926 | */ | |
2927 | static int | |
2928 | i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, int write) | |
2929 | { | |
1c5d22f7 | 2930 | uint32_t old_write_domain, old_read_domains; |
e47c68e9 EA |
2931 | int ret; |
2932 | ||
ba3d8d74 | 2933 | ret = i915_gem_object_flush_gpu_write_domain(obj, false); |
e47c68e9 EA |
2934 | if (ret != 0) |
2935 | return ret; | |
2ef7eeaa | 2936 | |
e47c68e9 | 2937 | i915_gem_object_flush_gtt_write_domain(obj); |
2ef7eeaa | 2938 | |
e47c68e9 EA |
2939 | /* If we have a partially-valid cache of the object in the CPU, |
2940 | * finish invalidating it and free the per-page flags. | |
2ef7eeaa | 2941 | */ |
e47c68e9 | 2942 | i915_gem_object_set_to_full_cpu_read_domain(obj); |
2ef7eeaa | 2943 | |
7213342d | 2944 | if (write) { |
2cf34d7b | 2945 | ret = i915_gem_object_wait_rendering(obj, true); |
7213342d CW |
2946 | if (ret) |
2947 | return ret; | |
2948 | } | |
2949 | ||
1c5d22f7 CW |
2950 | old_write_domain = obj->write_domain; |
2951 | old_read_domains = obj->read_domains; | |
2952 | ||
e47c68e9 EA |
2953 | /* Flush the CPU cache if it's still invalid. */ |
2954 | if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) { | |
2ef7eeaa | 2955 | i915_gem_clflush_object(obj); |
2ef7eeaa | 2956 | |
e47c68e9 | 2957 | obj->read_domains |= I915_GEM_DOMAIN_CPU; |
2ef7eeaa EA |
2958 | } |
2959 | ||
2960 | /* It should now be out of any other write domains, and we can update | |
2961 | * the domain values for our changes. | |
2962 | */ | |
e47c68e9 EA |
2963 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0); |
2964 | ||
2965 | /* If we're writing through the CPU, then the GPU read domains will | |
2966 | * need to be invalidated at next use. | |
2967 | */ | |
2968 | if (write) { | |
c78ec30b | 2969 | obj->read_domains = I915_GEM_DOMAIN_CPU; |
e47c68e9 EA |
2970 | obj->write_domain = I915_GEM_DOMAIN_CPU; |
2971 | } | |
2ef7eeaa | 2972 | |
1c5d22f7 CW |
2973 | trace_i915_gem_object_change_domain(obj, |
2974 | old_read_domains, | |
2975 | old_write_domain); | |
2976 | ||
2ef7eeaa EA |
2977 | return 0; |
2978 | } | |
2979 | ||
673a394b EA |
2980 | /* |
2981 | * Set the next domain for the specified object. This | |
2982 | * may not actually perform the necessary flushing/invaliding though, | |
2983 | * as that may want to be batched with other set_domain operations | |
2984 | * | |
2985 | * This is (we hope) the only really tricky part of gem. The goal | |
2986 | * is fairly simple -- track which caches hold bits of the object | |
2987 | * and make sure they remain coherent. A few concrete examples may | |
2988 | * help to explain how it works. For shorthand, we use the notation | |
2989 | * (read_domains, write_domain), e.g. (CPU, CPU) to indicate the | |
2990 | * a pair of read and write domain masks. | |
2991 | * | |
2992 | * Case 1: the batch buffer | |
2993 | * | |
2994 | * 1. Allocated | |
2995 | * 2. Written by CPU | |
2996 | * 3. Mapped to GTT | |
2997 | * 4. Read by GPU | |
2998 | * 5. Unmapped from GTT | |
2999 | * 6. Freed | |
3000 | * | |
3001 | * Let's take these a step at a time | |
3002 | * | |
3003 | * 1. Allocated | |
3004 | * Pages allocated from the kernel may still have | |
3005 | * cache contents, so we set them to (CPU, CPU) always. | |
3006 | * 2. Written by CPU (using pwrite) | |
3007 | * The pwrite function calls set_domain (CPU, CPU) and | |
3008 | * this function does nothing (as nothing changes) | |
3009 | * 3. Mapped by GTT | |
3010 | * This function asserts that the object is not | |
3011 | * currently in any GPU-based read or write domains | |
3012 | * 4. Read by GPU | |
3013 | * i915_gem_execbuffer calls set_domain (COMMAND, 0). | |
3014 | * As write_domain is zero, this function adds in the | |
3015 | * current read domains (CPU+COMMAND, 0). | |
3016 | * flush_domains is set to CPU. | |
3017 | * invalidate_domains is set to COMMAND | |
3018 | * clflush is run to get data out of the CPU caches | |
3019 | * then i915_dev_set_domain calls i915_gem_flush to | |
3020 | * emit an MI_FLUSH and drm_agp_chipset_flush | |
3021 | * 5. Unmapped from GTT | |
3022 | * i915_gem_object_unbind calls set_domain (CPU, CPU) | |
3023 | * flush_domains and invalidate_domains end up both zero | |
3024 | * so no flushing/invalidating happens | |
3025 | * 6. Freed | |
3026 | * yay, done | |
3027 | * | |
3028 | * Case 2: The shared render buffer | |
3029 | * | |
3030 | * 1. Allocated | |
3031 | * 2. Mapped to GTT | |
3032 | * 3. Read/written by GPU | |
3033 | * 4. set_domain to (CPU,CPU) | |
3034 | * 5. Read/written by CPU | |
3035 | * 6. Read/written by GPU | |
3036 | * | |
3037 | * 1. Allocated | |
3038 | * Same as last example, (CPU, CPU) | |
3039 | * 2. Mapped to GTT | |
3040 | * Nothing changes (assertions find that it is not in the GPU) | |
3041 | * 3. Read/written by GPU | |
3042 | * execbuffer calls set_domain (RENDER, RENDER) | |
3043 | * flush_domains gets CPU | |
3044 | * invalidate_domains gets GPU | |
3045 | * clflush (obj) | |
3046 | * MI_FLUSH and drm_agp_chipset_flush | |
3047 | * 4. set_domain (CPU, CPU) | |
3048 | * flush_domains gets GPU | |
3049 | * invalidate_domains gets CPU | |
3050 | * wait_rendering (obj) to make sure all drawing is complete. | |
3051 | * This will include an MI_FLUSH to get the data from GPU | |
3052 | * to memory | |
3053 | * clflush (obj) to invalidate the CPU cache | |
3054 | * Another MI_FLUSH in i915_gem_flush (eliminate this somehow?) | |
3055 | * 5. Read/written by CPU | |
3056 | * cache lines are loaded and dirtied | |
3057 | * 6. Read written by GPU | |
3058 | * Same as last GPU access | |
3059 | * | |
3060 | * Case 3: The constant buffer | |
3061 | * | |
3062 | * 1. Allocated | |
3063 | * 2. Written by CPU | |
3064 | * 3. Read by GPU | |
3065 | * 4. Updated (written) by CPU again | |
3066 | * 5. Read by GPU | |
3067 | * | |
3068 | * 1. Allocated | |
3069 | * (CPU, CPU) | |
3070 | * 2. Written by CPU | |
3071 | * (CPU, CPU) | |
3072 | * 3. Read by GPU | |
3073 | * (CPU+RENDER, 0) | |
3074 | * flush_domains = CPU | |
3075 | * invalidate_domains = RENDER | |
3076 | * clflush (obj) | |
3077 | * MI_FLUSH | |
3078 | * drm_agp_chipset_flush | |
3079 | * 4. Updated (written) by CPU again | |
3080 | * (CPU, CPU) | |
3081 | * flush_domains = 0 (no previous write domain) | |
3082 | * invalidate_domains = 0 (no new read domains) | |
3083 | * 5. Read by GPU | |
3084 | * (CPU+RENDER, 0) | |
3085 | * flush_domains = CPU | |
3086 | * invalidate_domains = RENDER | |
3087 | * clflush (obj) | |
3088 | * MI_FLUSH | |
3089 | * drm_agp_chipset_flush | |
3090 | */ | |
c0d90829 | 3091 | static void |
b6651458 CW |
3092 | i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj, |
3093 | struct intel_ring_buffer *ring) | |
673a394b EA |
3094 | { |
3095 | struct drm_device *dev = obj->dev; | |
9220434a | 3096 | struct drm_i915_private *dev_priv = dev->dev_private; |
23010e43 | 3097 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
3098 | uint32_t invalidate_domains = 0; |
3099 | uint32_t flush_domains = 0; | |
652c393a | 3100 | |
673a394b EA |
3101 | /* |
3102 | * If the object isn't moving to a new write domain, | |
3103 | * let the object stay in multiple read domains | |
3104 | */ | |
8b0e378a EA |
3105 | if (obj->pending_write_domain == 0) |
3106 | obj->pending_read_domains |= obj->read_domains; | |
673a394b EA |
3107 | |
3108 | /* | |
3109 | * Flush the current write domain if | |
3110 | * the new read domains don't match. Invalidate | |
3111 | * any read domains which differ from the old | |
3112 | * write domain | |
3113 | */ | |
8b0e378a EA |
3114 | if (obj->write_domain && |
3115 | obj->write_domain != obj->pending_read_domains) { | |
673a394b | 3116 | flush_domains |= obj->write_domain; |
8b0e378a EA |
3117 | invalidate_domains |= |
3118 | obj->pending_read_domains & ~obj->write_domain; | |
673a394b EA |
3119 | } |
3120 | /* | |
3121 | * Invalidate any read caches which may have | |
3122 | * stale data. That is, any new read domains. | |
3123 | */ | |
8b0e378a | 3124 | invalidate_domains |= obj->pending_read_domains & ~obj->read_domains; |
3d2a812a | 3125 | if ((flush_domains | invalidate_domains) & I915_GEM_DOMAIN_CPU) |
673a394b | 3126 | i915_gem_clflush_object(obj); |
673a394b | 3127 | |
efbeed96 EA |
3128 | /* The actual obj->write_domain will be updated with |
3129 | * pending_write_domain after we emit the accumulated flush for all | |
3130 | * of our domain changes in execbuffers (which clears objects' | |
3131 | * write_domains). So if we have a current write domain that we | |
3132 | * aren't changing, set pending_write_domain to that. | |
3133 | */ | |
3134 | if (flush_domains == 0 && obj->pending_write_domain == 0) | |
3135 | obj->pending_write_domain = obj->write_domain; | |
673a394b EA |
3136 | |
3137 | dev->invalidate_domains |= invalidate_domains; | |
3138 | dev->flush_domains |= flush_domains; | |
b6651458 | 3139 | if (flush_domains & I915_GEM_GPU_DOMAINS) |
9220434a | 3140 | dev_priv->mm.flush_rings |= obj_priv->ring->id; |
b6651458 CW |
3141 | if (invalidate_domains & I915_GEM_GPU_DOMAINS) |
3142 | dev_priv->mm.flush_rings |= ring->id; | |
673a394b EA |
3143 | } |
3144 | ||
3145 | /** | |
e47c68e9 | 3146 | * Moves the object from a partially CPU read to a full one. |
673a394b | 3147 | * |
e47c68e9 EA |
3148 | * Note that this only resolves i915_gem_object_set_cpu_read_domain_range(), |
3149 | * and doesn't handle transitioning from !(read_domains & I915_GEM_DOMAIN_CPU). | |
673a394b | 3150 | */ |
e47c68e9 EA |
3151 | static void |
3152 | i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj) | |
673a394b | 3153 | { |
23010e43 | 3154 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b | 3155 | |
e47c68e9 EA |
3156 | if (!obj_priv->page_cpu_valid) |
3157 | return; | |
3158 | ||
3159 | /* If we're partially in the CPU read domain, finish moving it in. | |
3160 | */ | |
3161 | if (obj->read_domains & I915_GEM_DOMAIN_CPU) { | |
3162 | int i; | |
3163 | ||
3164 | for (i = 0; i <= (obj->size - 1) / PAGE_SIZE; i++) { | |
3165 | if (obj_priv->page_cpu_valid[i]) | |
3166 | continue; | |
856fa198 | 3167 | drm_clflush_pages(obj_priv->pages + i, 1); |
e47c68e9 | 3168 | } |
e47c68e9 EA |
3169 | } |
3170 | ||
3171 | /* Free the page_cpu_valid mappings which are now stale, whether | |
3172 | * or not we've got I915_GEM_DOMAIN_CPU. | |
3173 | */ | |
9a298b2a | 3174 | kfree(obj_priv->page_cpu_valid); |
e47c68e9 EA |
3175 | obj_priv->page_cpu_valid = NULL; |
3176 | } | |
3177 | ||
3178 | /** | |
3179 | * Set the CPU read domain on a range of the object. | |
3180 | * | |
3181 | * The object ends up with I915_GEM_DOMAIN_CPU in its read flags although it's | |
3182 | * not entirely valid. The page_cpu_valid member of the object flags which | |
3183 | * pages have been flushed, and will be respected by | |
3184 | * i915_gem_object_set_to_cpu_domain() if it's called on to get a valid mapping | |
3185 | * of the whole object. | |
3186 | * | |
3187 | * This function returns when the move is complete, including waiting on | |
3188 | * flushes to occur. | |
3189 | */ | |
3190 | static int | |
3191 | i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj, | |
3192 | uint64_t offset, uint64_t size) | |
3193 | { | |
23010e43 | 3194 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
1c5d22f7 | 3195 | uint32_t old_read_domains; |
e47c68e9 | 3196 | int i, ret; |
673a394b | 3197 | |
e47c68e9 EA |
3198 | if (offset == 0 && size == obj->size) |
3199 | return i915_gem_object_set_to_cpu_domain(obj, 0); | |
673a394b | 3200 | |
ba3d8d74 | 3201 | ret = i915_gem_object_flush_gpu_write_domain(obj, false); |
e47c68e9 | 3202 | if (ret != 0) |
6a47baa6 | 3203 | return ret; |
e47c68e9 EA |
3204 | i915_gem_object_flush_gtt_write_domain(obj); |
3205 | ||
3206 | /* If we're already fully in the CPU read domain, we're done. */ | |
3207 | if (obj_priv->page_cpu_valid == NULL && | |
3208 | (obj->read_domains & I915_GEM_DOMAIN_CPU) != 0) | |
3209 | return 0; | |
673a394b | 3210 | |
e47c68e9 EA |
3211 | /* Otherwise, create/clear the per-page CPU read domain flag if we're |
3212 | * newly adding I915_GEM_DOMAIN_CPU | |
3213 | */ | |
673a394b | 3214 | if (obj_priv->page_cpu_valid == NULL) { |
9a298b2a EA |
3215 | obj_priv->page_cpu_valid = kzalloc(obj->size / PAGE_SIZE, |
3216 | GFP_KERNEL); | |
e47c68e9 EA |
3217 | if (obj_priv->page_cpu_valid == NULL) |
3218 | return -ENOMEM; | |
3219 | } else if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) | |
3220 | memset(obj_priv->page_cpu_valid, 0, obj->size / PAGE_SIZE); | |
673a394b EA |
3221 | |
3222 | /* Flush the cache on any pages that are still invalid from the CPU's | |
3223 | * perspective. | |
3224 | */ | |
e47c68e9 EA |
3225 | for (i = offset / PAGE_SIZE; i <= (offset + size - 1) / PAGE_SIZE; |
3226 | i++) { | |
673a394b EA |
3227 | if (obj_priv->page_cpu_valid[i]) |
3228 | continue; | |
3229 | ||
856fa198 | 3230 | drm_clflush_pages(obj_priv->pages + i, 1); |
673a394b EA |
3231 | |
3232 | obj_priv->page_cpu_valid[i] = 1; | |
3233 | } | |
3234 | ||
e47c68e9 EA |
3235 | /* It should now be out of any other write domains, and we can update |
3236 | * the domain values for our changes. | |
3237 | */ | |
3238 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0); | |
3239 | ||
1c5d22f7 | 3240 | old_read_domains = obj->read_domains; |
e47c68e9 EA |
3241 | obj->read_domains |= I915_GEM_DOMAIN_CPU; |
3242 | ||
1c5d22f7 CW |
3243 | trace_i915_gem_object_change_domain(obj, |
3244 | old_read_domains, | |
3245 | obj->write_domain); | |
3246 | ||
673a394b EA |
3247 | return 0; |
3248 | } | |
3249 | ||
673a394b EA |
3250 | /** |
3251 | * Pin an object to the GTT and evaluate the relocations landing in it. | |
3252 | */ | |
3253 | static int | |
9af90d19 CW |
3254 | i915_gem_execbuffer_relocate(struct drm_i915_gem_object *obj, |
3255 | struct drm_file *file_priv, | |
3256 | struct drm_i915_gem_exec_object2 *entry) | |
673a394b | 3257 | { |
9af90d19 | 3258 | struct drm_device *dev = obj->base.dev; |
0839ccb8 | 3259 | drm_i915_private_t *dev_priv = dev->dev_private; |
2549d6c2 | 3260 | struct drm_i915_gem_relocation_entry __user *user_relocs; |
9af90d19 CW |
3261 | struct drm_gem_object *target_obj = NULL; |
3262 | uint32_t target_handle = 0; | |
3263 | int i, ret = 0; | |
673a394b | 3264 | |
2549d6c2 | 3265 | user_relocs = (void __user *)(uintptr_t)entry->relocs_ptr; |
673a394b | 3266 | for (i = 0; i < entry->relocation_count; i++) { |
2549d6c2 | 3267 | struct drm_i915_gem_relocation_entry reloc; |
9af90d19 | 3268 | uint32_t target_offset; |
673a394b | 3269 | |
9af90d19 CW |
3270 | if (__copy_from_user_inatomic(&reloc, |
3271 | user_relocs+i, | |
3272 | sizeof(reloc))) { | |
3273 | ret = -EFAULT; | |
3274 | break; | |
76446cac | 3275 | } |
76446cac | 3276 | |
9af90d19 CW |
3277 | if (reloc.target_handle != target_handle) { |
3278 | drm_gem_object_unreference(target_obj); | |
673a394b | 3279 | |
9af90d19 CW |
3280 | target_obj = drm_gem_object_lookup(dev, file_priv, |
3281 | reloc.target_handle); | |
3282 | if (target_obj == NULL) { | |
3283 | ret = -ENOENT; | |
3284 | break; | |
3285 | } | |
3286 | ||
3287 | target_handle = reloc.target_handle; | |
673a394b | 3288 | } |
9af90d19 | 3289 | target_offset = to_intel_bo(target_obj)->gtt_offset; |
673a394b | 3290 | |
8542a0bb CW |
3291 | #if WATCH_RELOC |
3292 | DRM_INFO("%s: obj %p offset %08x target %d " | |
3293 | "read %08x write %08x gtt %08x " | |
3294 | "presumed %08x delta %08x\n", | |
3295 | __func__, | |
3296 | obj, | |
2549d6c2 CW |
3297 | (int) reloc.offset, |
3298 | (int) reloc.target_handle, | |
3299 | (int) reloc.read_domains, | |
3300 | (int) reloc.write_domain, | |
9af90d19 | 3301 | (int) target_offset, |
2549d6c2 CW |
3302 | (int) reloc.presumed_offset, |
3303 | reloc.delta); | |
8542a0bb CW |
3304 | #endif |
3305 | ||
673a394b EA |
3306 | /* The target buffer should have appeared before us in the |
3307 | * exec_object list, so it should have a GTT space bound by now. | |
3308 | */ | |
9af90d19 | 3309 | if (target_offset == 0) { |
673a394b | 3310 | DRM_ERROR("No GTT space found for object %d\n", |
2549d6c2 | 3311 | reloc.target_handle); |
9af90d19 CW |
3312 | ret = -EINVAL; |
3313 | break; | |
673a394b EA |
3314 | } |
3315 | ||
8542a0bb | 3316 | /* Validate that the target is in a valid r/w GPU domain */ |
2549d6c2 | 3317 | if (reloc.write_domain & (reloc.write_domain - 1)) { |
16edd550 DV |
3318 | DRM_ERROR("reloc with multiple write domains: " |
3319 | "obj %p target %d offset %d " | |
3320 | "read %08x write %08x", | |
2549d6c2 CW |
3321 | obj, reloc.target_handle, |
3322 | (int) reloc.offset, | |
3323 | reloc.read_domains, | |
3324 | reloc.write_domain); | |
9af90d19 CW |
3325 | ret = -EINVAL; |
3326 | break; | |
16edd550 | 3327 | } |
2549d6c2 CW |
3328 | if (reloc.write_domain & I915_GEM_DOMAIN_CPU || |
3329 | reloc.read_domains & I915_GEM_DOMAIN_CPU) { | |
e47c68e9 EA |
3330 | DRM_ERROR("reloc with read/write CPU domains: " |
3331 | "obj %p target %d offset %d " | |
3332 | "read %08x write %08x", | |
2549d6c2 CW |
3333 | obj, reloc.target_handle, |
3334 | (int) reloc.offset, | |
3335 | reloc.read_domains, | |
3336 | reloc.write_domain); | |
9af90d19 CW |
3337 | ret = -EINVAL; |
3338 | break; | |
e47c68e9 | 3339 | } |
2549d6c2 CW |
3340 | if (reloc.write_domain && target_obj->pending_write_domain && |
3341 | reloc.write_domain != target_obj->pending_write_domain) { | |
673a394b EA |
3342 | DRM_ERROR("Write domain conflict: " |
3343 | "obj %p target %d offset %d " | |
3344 | "new %08x old %08x\n", | |
2549d6c2 CW |
3345 | obj, reloc.target_handle, |
3346 | (int) reloc.offset, | |
3347 | reloc.write_domain, | |
673a394b | 3348 | target_obj->pending_write_domain); |
9af90d19 CW |
3349 | ret = -EINVAL; |
3350 | break; | |
673a394b EA |
3351 | } |
3352 | ||
2549d6c2 | 3353 | target_obj->pending_read_domains |= reloc.read_domains; |
878a3c37 | 3354 | target_obj->pending_write_domain |= reloc.write_domain; |
673a394b EA |
3355 | |
3356 | /* If the relocation already has the right value in it, no | |
3357 | * more work needs to be done. | |
3358 | */ | |
9af90d19 | 3359 | if (target_offset == reloc.presumed_offset) |
673a394b | 3360 | continue; |
673a394b | 3361 | |
8542a0bb | 3362 | /* Check that the relocation address is valid... */ |
9af90d19 | 3363 | if (reloc.offset > obj->base.size - 4) { |
8542a0bb CW |
3364 | DRM_ERROR("Relocation beyond object bounds: " |
3365 | "obj %p target %d offset %d size %d.\n", | |
2549d6c2 | 3366 | obj, reloc.target_handle, |
9af90d19 CW |
3367 | (int) reloc.offset, (int) obj->base.size); |
3368 | ret = -EINVAL; | |
3369 | break; | |
8542a0bb | 3370 | } |
2549d6c2 | 3371 | if (reloc.offset & 3) { |
8542a0bb CW |
3372 | DRM_ERROR("Relocation not 4-byte aligned: " |
3373 | "obj %p target %d offset %d.\n", | |
2549d6c2 CW |
3374 | obj, reloc.target_handle, |
3375 | (int) reloc.offset); | |
9af90d19 CW |
3376 | ret = -EINVAL; |
3377 | break; | |
8542a0bb CW |
3378 | } |
3379 | ||
3380 | /* and points to somewhere within the target object. */ | |
2549d6c2 | 3381 | if (reloc.delta >= target_obj->size) { |
8542a0bb CW |
3382 | DRM_ERROR("Relocation beyond target object bounds: " |
3383 | "obj %p target %d delta %d size %d.\n", | |
2549d6c2 CW |
3384 | obj, reloc.target_handle, |
3385 | (int) reloc.delta, (int) target_obj->size); | |
9af90d19 CW |
3386 | ret = -EINVAL; |
3387 | break; | |
673a394b EA |
3388 | } |
3389 | ||
9af90d19 CW |
3390 | reloc.delta += target_offset; |
3391 | if (obj->base.write_domain == I915_GEM_DOMAIN_CPU) { | |
f0c43d9b CW |
3392 | uint32_t page_offset = reloc.offset & ~PAGE_MASK; |
3393 | char *vaddr; | |
673a394b | 3394 | |
c48c43e4 | 3395 | vaddr = kmap_atomic(obj->pages[reloc.offset >> PAGE_SHIFT]); |
f0c43d9b | 3396 | *(uint32_t *)(vaddr + page_offset) = reloc.delta; |
c48c43e4 | 3397 | kunmap_atomic(vaddr); |
f0c43d9b CW |
3398 | } else { |
3399 | uint32_t __iomem *reloc_entry; | |
3400 | void __iomem *reloc_page; | |
b962442e | 3401 | |
9af90d19 CW |
3402 | ret = i915_gem_object_set_to_gtt_domain(&obj->base, 1); |
3403 | if (ret) | |
3404 | break; | |
b962442e | 3405 | |
f0c43d9b | 3406 | /* Map the page containing the relocation we're going to perform. */ |
9af90d19 | 3407 | reloc.offset += obj->gtt_offset; |
f0c43d9b | 3408 | reloc_page = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping, |
c48c43e4 | 3409 | reloc.offset & PAGE_MASK); |
f0c43d9b CW |
3410 | reloc_entry = (uint32_t __iomem *) |
3411 | (reloc_page + (reloc.offset & ~PAGE_MASK)); | |
3412 | iowrite32(reloc.delta, reloc_entry); | |
c48c43e4 | 3413 | io_mapping_unmap_atomic(reloc_page); |
f0c43d9b | 3414 | } |
b962442e | 3415 | |
b5dc608c CW |
3416 | /* and update the user's relocation entry */ |
3417 | reloc.presumed_offset = target_offset; | |
3418 | if (__copy_to_user_inatomic(&user_relocs[i].presumed_offset, | |
3419 | &reloc.presumed_offset, | |
3420 | sizeof(reloc.presumed_offset))) { | |
3421 | ret = -EFAULT; | |
3422 | break; | |
3423 | } | |
b962442e | 3424 | } |
b962442e | 3425 | |
9af90d19 | 3426 | drm_gem_object_unreference(target_obj); |
673a394b EA |
3427 | return ret; |
3428 | } | |
3429 | ||
40a5f0de | 3430 | static int |
9af90d19 CW |
3431 | i915_gem_execbuffer_pin(struct drm_device *dev, |
3432 | struct drm_file *file, | |
3433 | struct drm_gem_object **object_list, | |
3434 | struct drm_i915_gem_exec_object2 *exec_list, | |
3435 | int count) | |
40a5f0de | 3436 | { |
9af90d19 CW |
3437 | struct drm_i915_private *dev_priv = dev->dev_private; |
3438 | int ret, i, retry; | |
40a5f0de | 3439 | |
9af90d19 CW |
3440 | /* attempt to pin all of the buffers into the GTT */ |
3441 | for (retry = 0; retry < 2; retry++) { | |
3442 | ret = 0; | |
3443 | for (i = 0; i < count; i++) { | |
3444 | struct drm_i915_gem_exec_object2 *entry = &exec_list[i]; | |
3445 | struct drm_i915_gem_object *obj= to_intel_bo(object_list[i]); | |
3446 | bool need_fence = | |
3447 | entry->flags & EXEC_OBJECT_NEEDS_FENCE && | |
3448 | obj->tiling_mode != I915_TILING_NONE; | |
3449 | ||
3450 | /* Check fence reg constraints and rebind if necessary */ | |
3451 | if (need_fence && | |
3452 | !i915_gem_object_fence_offset_ok(&obj->base, | |
3453 | obj->tiling_mode)) { | |
3454 | ret = i915_gem_object_unbind(&obj->base); | |
3455 | if (ret) | |
3456 | break; | |
3457 | } | |
40a5f0de | 3458 | |
9af90d19 CW |
3459 | ret = i915_gem_object_pin(&obj->base, entry->alignment); |
3460 | if (ret) | |
3461 | break; | |
40a5f0de | 3462 | |
9af90d19 CW |
3463 | /* |
3464 | * Pre-965 chips need a fence register set up in order | |
3465 | * to properly handle blits to/from tiled surfaces. | |
3466 | */ | |
3467 | if (need_fence) { | |
3468 | ret = i915_gem_object_get_fence_reg(&obj->base, true); | |
3469 | if (ret) { | |
3470 | i915_gem_object_unpin(&obj->base); | |
3471 | break; | |
3472 | } | |
40a5f0de | 3473 | |
9af90d19 CW |
3474 | dev_priv->fence_regs[obj->fence_reg].gpu = true; |
3475 | } | |
40a5f0de | 3476 | |
9af90d19 | 3477 | entry->offset = obj->gtt_offset; |
40a5f0de EA |
3478 | } |
3479 | ||
9af90d19 CW |
3480 | while (i--) |
3481 | i915_gem_object_unpin(object_list[i]); | |
3482 | ||
3483 | if (ret == 0) | |
3484 | break; | |
673a394b | 3485 | |
9af90d19 CW |
3486 | if (ret != -ENOSPC || retry) |
3487 | return ret; | |
3488 | ||
3489 | ret = i915_gem_evict_everything(dev); | |
3490 | if (ret) | |
3491 | return ret; | |
40a5f0de EA |
3492 | } |
3493 | ||
2bc43b5c | 3494 | return 0; |
40a5f0de EA |
3495 | } |
3496 | ||
673a394b EA |
3497 | /* Throttle our rendering by waiting until the ring has completed our requests |
3498 | * emitted over 20 msec ago. | |
3499 | * | |
b962442e EA |
3500 | * Note that if we were to use the current jiffies each time around the loop, |
3501 | * we wouldn't escape the function with any frames outstanding if the time to | |
3502 | * render a frame was over 20ms. | |
3503 | * | |
673a394b EA |
3504 | * This should get us reasonable parallelism between CPU and GPU but also |
3505 | * relatively low latency when blocking on a particular request to finish. | |
3506 | */ | |
40a5f0de | 3507 | static int |
f787a5f5 | 3508 | i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file) |
40a5f0de | 3509 | { |
f787a5f5 CW |
3510 | struct drm_i915_private *dev_priv = dev->dev_private; |
3511 | struct drm_i915_file_private *file_priv = file->driver_priv; | |
b962442e | 3512 | unsigned long recent_enough = jiffies - msecs_to_jiffies(20); |
f787a5f5 CW |
3513 | struct drm_i915_gem_request *request; |
3514 | struct intel_ring_buffer *ring = NULL; | |
3515 | u32 seqno = 0; | |
3516 | int ret; | |
93533c29 | 3517 | |
1c25595f | 3518 | spin_lock(&file_priv->mm.lock); |
f787a5f5 | 3519 | list_for_each_entry(request, &file_priv->mm.request_list, client_list) { |
b962442e EA |
3520 | if (time_after_eq(request->emitted_jiffies, recent_enough)) |
3521 | break; | |
40a5f0de | 3522 | |
f787a5f5 CW |
3523 | ring = request->ring; |
3524 | seqno = request->seqno; | |
b962442e | 3525 | } |
1c25595f | 3526 | spin_unlock(&file_priv->mm.lock); |
40a5f0de | 3527 | |
f787a5f5 CW |
3528 | if (seqno == 0) |
3529 | return 0; | |
2bc43b5c | 3530 | |
f787a5f5 | 3531 | ret = 0; |
78501eac | 3532 | if (!i915_seqno_passed(ring->get_seqno(ring), seqno)) { |
f787a5f5 CW |
3533 | /* And wait for the seqno passing without holding any locks and |
3534 | * causing extra latency for others. This is safe as the irq | |
3535 | * generation is designed to be run atomically and so is | |
3536 | * lockless. | |
3537 | */ | |
78501eac | 3538 | ring->user_irq_get(ring); |
f787a5f5 | 3539 | ret = wait_event_interruptible(ring->irq_queue, |
78501eac | 3540 | i915_seqno_passed(ring->get_seqno(ring), seqno) |
f787a5f5 | 3541 | || atomic_read(&dev_priv->mm.wedged)); |
78501eac | 3542 | ring->user_irq_put(ring); |
40a5f0de | 3543 | |
f787a5f5 CW |
3544 | if (ret == 0 && atomic_read(&dev_priv->mm.wedged)) |
3545 | ret = -EIO; | |
40a5f0de EA |
3546 | } |
3547 | ||
f787a5f5 CW |
3548 | if (ret == 0) |
3549 | queue_delayed_work(dev_priv->wq, &dev_priv->mm.retire_work, 0); | |
40a5f0de EA |
3550 | |
3551 | return ret; | |
3552 | } | |
3553 | ||
83d60795 | 3554 | static int |
2549d6c2 CW |
3555 | i915_gem_check_execbuffer(struct drm_i915_gem_execbuffer2 *exec, |
3556 | uint64_t exec_offset) | |
83d60795 CW |
3557 | { |
3558 | uint32_t exec_start, exec_len; | |
3559 | ||
3560 | exec_start = (uint32_t) exec_offset + exec->batch_start_offset; | |
3561 | exec_len = (uint32_t) exec->batch_len; | |
3562 | ||
3563 | if ((exec_start | exec_len) & 0x7) | |
3564 | return -EINVAL; | |
3565 | ||
3566 | if (!exec_start) | |
3567 | return -EINVAL; | |
3568 | ||
3569 | return 0; | |
3570 | } | |
3571 | ||
6b95a207 | 3572 | static int |
2549d6c2 CW |
3573 | validate_exec_list(struct drm_i915_gem_exec_object2 *exec, |
3574 | int count) | |
6b95a207 | 3575 | { |
2549d6c2 | 3576 | int i; |
6b95a207 | 3577 | |
2549d6c2 CW |
3578 | for (i = 0; i < count; i++) { |
3579 | char __user *ptr = (char __user *)(uintptr_t)exec[i].relocs_ptr; | |
3580 | size_t length = exec[i].relocation_count * sizeof(struct drm_i915_gem_relocation_entry); | |
6b95a207 | 3581 | |
2549d6c2 CW |
3582 | if (!access_ok(VERIFY_READ, ptr, length)) |
3583 | return -EFAULT; | |
40a5f0de | 3584 | |
b5dc608c CW |
3585 | /* we may also need to update the presumed offsets */ |
3586 | if (!access_ok(VERIFY_WRITE, ptr, length)) | |
3587 | return -EFAULT; | |
3588 | ||
2549d6c2 CW |
3589 | if (fault_in_pages_readable(ptr, length)) |
3590 | return -EFAULT; | |
6b95a207 | 3591 | } |
6b95a207 | 3592 | |
83d60795 | 3593 | return 0; |
6b95a207 KH |
3594 | } |
3595 | ||
8dc5d147 | 3596 | static int |
76446cac | 3597 | i915_gem_do_execbuffer(struct drm_device *dev, void *data, |
9af90d19 | 3598 | struct drm_file *file, |
76446cac JB |
3599 | struct drm_i915_gem_execbuffer2 *args, |
3600 | struct drm_i915_gem_exec_object2 *exec_list) | |
673a394b EA |
3601 | { |
3602 | drm_i915_private_t *dev_priv = dev->dev_private; | |
673a394b EA |
3603 | struct drm_gem_object **object_list = NULL; |
3604 | struct drm_gem_object *batch_obj; | |
201361a5 | 3605 | struct drm_clip_rect *cliprects = NULL; |
8dc5d147 | 3606 | struct drm_i915_gem_request *request = NULL; |
9af90d19 | 3607 | int ret, i, flips; |
673a394b | 3608 | uint64_t exec_offset; |
673a394b | 3609 | |
852835f3 ZN |
3610 | struct intel_ring_buffer *ring = NULL; |
3611 | ||
30dbf0c0 CW |
3612 | ret = i915_gem_check_is_wedged(dev); |
3613 | if (ret) | |
3614 | return ret; | |
3615 | ||
2549d6c2 CW |
3616 | ret = validate_exec_list(exec_list, args->buffer_count); |
3617 | if (ret) | |
3618 | return ret; | |
3619 | ||
673a394b EA |
3620 | #if WATCH_EXEC |
3621 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", | |
3622 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); | |
3623 | #endif | |
549f7365 CW |
3624 | switch (args->flags & I915_EXEC_RING_MASK) { |
3625 | case I915_EXEC_DEFAULT: | |
3626 | case I915_EXEC_RENDER: | |
3627 | ring = &dev_priv->render_ring; | |
3628 | break; | |
3629 | case I915_EXEC_BSD: | |
d1b851fc | 3630 | if (!HAS_BSD(dev)) { |
549f7365 | 3631 | DRM_ERROR("execbuf with invalid ring (BSD)\n"); |
d1b851fc ZN |
3632 | return -EINVAL; |
3633 | } | |
3634 | ring = &dev_priv->bsd_ring; | |
549f7365 CW |
3635 | break; |
3636 | case I915_EXEC_BLT: | |
3637 | if (!HAS_BLT(dev)) { | |
3638 | DRM_ERROR("execbuf with invalid ring (BLT)\n"); | |
3639 | return -EINVAL; | |
3640 | } | |
3641 | ring = &dev_priv->blt_ring; | |
3642 | break; | |
3643 | default: | |
3644 | DRM_ERROR("execbuf with unknown ring: %d\n", | |
3645 | (int)(args->flags & I915_EXEC_RING_MASK)); | |
3646 | return -EINVAL; | |
d1b851fc ZN |
3647 | } |
3648 | ||
4f481ed2 EA |
3649 | if (args->buffer_count < 1) { |
3650 | DRM_ERROR("execbuf with %d buffers\n", args->buffer_count); | |
3651 | return -EINVAL; | |
3652 | } | |
c8e0f93a | 3653 | object_list = drm_malloc_ab(sizeof(*object_list), args->buffer_count); |
76446cac JB |
3654 | if (object_list == NULL) { |
3655 | DRM_ERROR("Failed to allocate object list for %d buffers\n", | |
673a394b EA |
3656 | args->buffer_count); |
3657 | ret = -ENOMEM; | |
3658 | goto pre_mutex_err; | |
3659 | } | |
673a394b | 3660 | |
201361a5 | 3661 | if (args->num_cliprects != 0) { |
9a298b2a EA |
3662 | cliprects = kcalloc(args->num_cliprects, sizeof(*cliprects), |
3663 | GFP_KERNEL); | |
a40e8d31 OA |
3664 | if (cliprects == NULL) { |
3665 | ret = -ENOMEM; | |
201361a5 | 3666 | goto pre_mutex_err; |
a40e8d31 | 3667 | } |
201361a5 EA |
3668 | |
3669 | ret = copy_from_user(cliprects, | |
3670 | (struct drm_clip_rect __user *) | |
3671 | (uintptr_t) args->cliprects_ptr, | |
3672 | sizeof(*cliprects) * args->num_cliprects); | |
3673 | if (ret != 0) { | |
3674 | DRM_ERROR("copy %d cliprects failed: %d\n", | |
3675 | args->num_cliprects, ret); | |
c877cdce | 3676 | ret = -EFAULT; |
201361a5 EA |
3677 | goto pre_mutex_err; |
3678 | } | |
3679 | } | |
3680 | ||
8dc5d147 CW |
3681 | request = kzalloc(sizeof(*request), GFP_KERNEL); |
3682 | if (request == NULL) { | |
3683 | ret = -ENOMEM; | |
40a5f0de | 3684 | goto pre_mutex_err; |
8dc5d147 | 3685 | } |
40a5f0de | 3686 | |
76c1dec1 CW |
3687 | ret = i915_mutex_lock_interruptible(dev); |
3688 | if (ret) | |
a198bc80 | 3689 | goto pre_mutex_err; |
673a394b EA |
3690 | |
3691 | if (dev_priv->mm.suspended) { | |
673a394b | 3692 | mutex_unlock(&dev->struct_mutex); |
a198bc80 CW |
3693 | ret = -EBUSY; |
3694 | goto pre_mutex_err; | |
673a394b EA |
3695 | } |
3696 | ||
ac94a962 | 3697 | /* Look up object handles */ |
673a394b | 3698 | for (i = 0; i < args->buffer_count; i++) { |
7e318e18 CW |
3699 | struct drm_i915_gem_object *obj_priv; |
3700 | ||
9af90d19 | 3701 | object_list[i] = drm_gem_object_lookup(dev, file, |
673a394b EA |
3702 | exec_list[i].handle); |
3703 | if (object_list[i] == NULL) { | |
3704 | DRM_ERROR("Invalid object handle %d at index %d\n", | |
3705 | exec_list[i].handle, i); | |
0ce907f8 CW |
3706 | /* prevent error path from reading uninitialized data */ |
3707 | args->buffer_count = i + 1; | |
bf79cb91 | 3708 | ret = -ENOENT; |
673a394b EA |
3709 | goto err; |
3710 | } | |
b70d11da | 3711 | |
23010e43 | 3712 | obj_priv = to_intel_bo(object_list[i]); |
b70d11da KH |
3713 | if (obj_priv->in_execbuffer) { |
3714 | DRM_ERROR("Object %p appears more than once in object list\n", | |
3715 | object_list[i]); | |
0ce907f8 CW |
3716 | /* prevent error path from reading uninitialized data */ |
3717 | args->buffer_count = i + 1; | |
bf79cb91 | 3718 | ret = -EINVAL; |
b70d11da KH |
3719 | goto err; |
3720 | } | |
3721 | obj_priv->in_execbuffer = true; | |
ac94a962 | 3722 | } |
673a394b | 3723 | |
9af90d19 CW |
3724 | /* Move the objects en-masse into the GTT, evicting if necessary. */ |
3725 | ret = i915_gem_execbuffer_pin(dev, file, | |
3726 | object_list, exec_list, | |
3727 | args->buffer_count); | |
3728 | if (ret) | |
3729 | goto err; | |
ac94a962 | 3730 | |
9af90d19 CW |
3731 | /* The objects are in their final locations, apply the relocations. */ |
3732 | for (i = 0; i < args->buffer_count; i++) { | |
3733 | struct drm_i915_gem_object *obj = to_intel_bo(object_list[i]); | |
3734 | obj->base.pending_read_domains = 0; | |
3735 | obj->base.pending_write_domain = 0; | |
3736 | ret = i915_gem_execbuffer_relocate(obj, file, &exec_list[i]); | |
3737 | if (ret) | |
ac94a962 | 3738 | goto err; |
673a394b EA |
3739 | } |
3740 | ||
3741 | /* Set the pending read domains for the batch buffer to COMMAND */ | |
3742 | batch_obj = object_list[args->buffer_count-1]; | |
5f26a2c7 CW |
3743 | if (batch_obj->pending_write_domain) { |
3744 | DRM_ERROR("Attempting to use self-modifying batch buffer\n"); | |
3745 | ret = -EINVAL; | |
3746 | goto err; | |
3747 | } | |
3748 | batch_obj->pending_read_domains |= I915_GEM_DOMAIN_COMMAND; | |
673a394b | 3749 | |
9af90d19 CW |
3750 | /* Sanity check the batch buffer */ |
3751 | exec_offset = to_intel_bo(batch_obj)->gtt_offset; | |
3752 | ret = i915_gem_check_execbuffer(args, exec_offset); | |
83d60795 CW |
3753 | if (ret != 0) { |
3754 | DRM_ERROR("execbuf with invalid offset/length\n"); | |
3755 | goto err; | |
3756 | } | |
3757 | ||
646f0f6e KP |
3758 | /* Zero the global flush/invalidate flags. These |
3759 | * will be modified as new domains are computed | |
3760 | * for each object | |
3761 | */ | |
3762 | dev->invalidate_domains = 0; | |
3763 | dev->flush_domains = 0; | |
9220434a | 3764 | dev_priv->mm.flush_rings = 0; |
7e318e18 CW |
3765 | for (i = 0; i < args->buffer_count; i++) |
3766 | i915_gem_object_set_to_gpu_domain(object_list[i], ring); | |
673a394b | 3767 | |
646f0f6e KP |
3768 | if (dev->invalidate_domains | dev->flush_domains) { |
3769 | #if WATCH_EXEC | |
3770 | DRM_INFO("%s: invalidate_domains %08x flush_domains %08x\n", | |
3771 | __func__, | |
3772 | dev->invalidate_domains, | |
3773 | dev->flush_domains); | |
3774 | #endif | |
9af90d19 | 3775 | i915_gem_flush(dev, file, |
646f0f6e | 3776 | dev->invalidate_domains, |
9220434a CW |
3777 | dev->flush_domains, |
3778 | dev_priv->mm.flush_rings); | |
646f0f6e | 3779 | } |
673a394b | 3780 | |
673a394b EA |
3781 | #if WATCH_COHERENCY |
3782 | for (i = 0; i < args->buffer_count; i++) { | |
3783 | i915_gem_object_check_coherency(object_list[i], | |
3784 | exec_list[i].handle); | |
3785 | } | |
3786 | #endif | |
3787 | ||
673a394b | 3788 | #if WATCH_EXEC |
6911a9b8 | 3789 | i915_gem_dump_object(batch_obj, |
673a394b EA |
3790 | args->batch_len, |
3791 | __func__, | |
3792 | ~0); | |
3793 | #endif | |
3794 | ||
e59f2bac CW |
3795 | /* Check for any pending flips. As we only maintain a flip queue depth |
3796 | * of 1, we can simply insert a WAIT for the next display flip prior | |
3797 | * to executing the batch and avoid stalling the CPU. | |
3798 | */ | |
3799 | flips = 0; | |
3800 | for (i = 0; i < args->buffer_count; i++) { | |
3801 | if (object_list[i]->write_domain) | |
3802 | flips |= atomic_read(&to_intel_bo(object_list[i])->pending_flip); | |
3803 | } | |
3804 | if (flips) { | |
3805 | int plane, flip_mask; | |
3806 | ||
3807 | for (plane = 0; flips >> plane; plane++) { | |
3808 | if (((flips >> plane) & 1) == 0) | |
3809 | continue; | |
3810 | ||
3811 | if (plane) | |
3812 | flip_mask = MI_WAIT_FOR_PLANE_B_FLIP; | |
3813 | else | |
3814 | flip_mask = MI_WAIT_FOR_PLANE_A_FLIP; | |
3815 | ||
e1f99ce6 CW |
3816 | ret = intel_ring_begin(ring, 2); |
3817 | if (ret) | |
3818 | goto err; | |
3819 | ||
78501eac CW |
3820 | intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask); |
3821 | intel_ring_emit(ring, MI_NOOP); | |
3822 | intel_ring_advance(ring); | |
e59f2bac CW |
3823 | } |
3824 | } | |
3825 | ||
673a394b | 3826 | /* Exec the batchbuffer */ |
78501eac | 3827 | ret = ring->dispatch_execbuffer(ring, args, cliprects, exec_offset); |
673a394b EA |
3828 | if (ret) { |
3829 | DRM_ERROR("dispatch failed %d\n", ret); | |
3830 | goto err; | |
3831 | } | |
3832 | ||
673a394b EA |
3833 | for (i = 0; i < args->buffer_count; i++) { |
3834 | struct drm_gem_object *obj = object_list[i]; | |
673a394b | 3835 | |
7e318e18 CW |
3836 | obj->read_domains = obj->pending_read_domains; |
3837 | obj->write_domain = obj->pending_write_domain; | |
3838 | ||
617dbe27 | 3839 | i915_gem_object_move_to_active(obj, ring); |
7e318e18 CW |
3840 | if (obj->write_domain) { |
3841 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); | |
3842 | obj_priv->dirty = 1; | |
3843 | list_move_tail(&obj_priv->gpu_write_list, | |
64193406 | 3844 | &ring->gpu_write_list); |
7e318e18 CW |
3845 | intel_mark_busy(dev, obj); |
3846 | } | |
3847 | ||
3848 | trace_i915_gem_object_change_domain(obj, | |
3849 | obj->read_domains, | |
3850 | obj->write_domain); | |
673a394b | 3851 | } |
673a394b | 3852 | |
7e318e18 CW |
3853 | /* |
3854 | * Ensure that the commands in the batch buffer are | |
3855 | * finished before the interrupt fires | |
3856 | */ | |
3857 | i915_retire_commands(dev, ring); | |
3858 | ||
3cce469c CW |
3859 | if (i915_add_request(dev, file, request, ring)) |
3860 | ring->outstanding_lazy_request = true; | |
3861 | else | |
3862 | request = NULL; | |
673a394b | 3863 | |
673a394b | 3864 | err: |
b70d11da | 3865 | for (i = 0; i < args->buffer_count; i++) { |
7e318e18 CW |
3866 | if (object_list[i] == NULL) |
3867 | break; | |
3868 | ||
3869 | to_intel_bo(object_list[i])->in_execbuffer = false; | |
aad87dff | 3870 | drm_gem_object_unreference(object_list[i]); |
b70d11da | 3871 | } |
673a394b | 3872 | |
673a394b EA |
3873 | mutex_unlock(&dev->struct_mutex); |
3874 | ||
93533c29 | 3875 | pre_mutex_err: |
8e7d2b2c | 3876 | drm_free_large(object_list); |
9a298b2a | 3877 | kfree(cliprects); |
8dc5d147 | 3878 | kfree(request); |
673a394b EA |
3879 | |
3880 | return ret; | |
3881 | } | |
3882 | ||
76446cac JB |
3883 | /* |
3884 | * Legacy execbuffer just creates an exec2 list from the original exec object | |
3885 | * list array and passes it to the real function. | |
3886 | */ | |
3887 | int | |
3888 | i915_gem_execbuffer(struct drm_device *dev, void *data, | |
3889 | struct drm_file *file_priv) | |
3890 | { | |
3891 | struct drm_i915_gem_execbuffer *args = data; | |
3892 | struct drm_i915_gem_execbuffer2 exec2; | |
3893 | struct drm_i915_gem_exec_object *exec_list = NULL; | |
3894 | struct drm_i915_gem_exec_object2 *exec2_list = NULL; | |
3895 | int ret, i; | |
3896 | ||
3897 | #if WATCH_EXEC | |
3898 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", | |
3899 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); | |
3900 | #endif | |
3901 | ||
3902 | if (args->buffer_count < 1) { | |
3903 | DRM_ERROR("execbuf with %d buffers\n", args->buffer_count); | |
3904 | return -EINVAL; | |
3905 | } | |
3906 | ||
3907 | /* Copy in the exec list from userland */ | |
3908 | exec_list = drm_malloc_ab(sizeof(*exec_list), args->buffer_count); | |
3909 | exec2_list = drm_malloc_ab(sizeof(*exec2_list), args->buffer_count); | |
3910 | if (exec_list == NULL || exec2_list == NULL) { | |
3911 | DRM_ERROR("Failed to allocate exec list for %d buffers\n", | |
3912 | args->buffer_count); | |
3913 | drm_free_large(exec_list); | |
3914 | drm_free_large(exec2_list); | |
3915 | return -ENOMEM; | |
3916 | } | |
3917 | ret = copy_from_user(exec_list, | |
3918 | (struct drm_i915_relocation_entry __user *) | |
3919 | (uintptr_t) args->buffers_ptr, | |
3920 | sizeof(*exec_list) * args->buffer_count); | |
3921 | if (ret != 0) { | |
3922 | DRM_ERROR("copy %d exec entries failed %d\n", | |
3923 | args->buffer_count, ret); | |
3924 | drm_free_large(exec_list); | |
3925 | drm_free_large(exec2_list); | |
3926 | return -EFAULT; | |
3927 | } | |
3928 | ||
3929 | for (i = 0; i < args->buffer_count; i++) { | |
3930 | exec2_list[i].handle = exec_list[i].handle; | |
3931 | exec2_list[i].relocation_count = exec_list[i].relocation_count; | |
3932 | exec2_list[i].relocs_ptr = exec_list[i].relocs_ptr; | |
3933 | exec2_list[i].alignment = exec_list[i].alignment; | |
3934 | exec2_list[i].offset = exec_list[i].offset; | |
a6c45cf0 | 3935 | if (INTEL_INFO(dev)->gen < 4) |
76446cac JB |
3936 | exec2_list[i].flags = EXEC_OBJECT_NEEDS_FENCE; |
3937 | else | |
3938 | exec2_list[i].flags = 0; | |
3939 | } | |
3940 | ||
3941 | exec2.buffers_ptr = args->buffers_ptr; | |
3942 | exec2.buffer_count = args->buffer_count; | |
3943 | exec2.batch_start_offset = args->batch_start_offset; | |
3944 | exec2.batch_len = args->batch_len; | |
3945 | exec2.DR1 = args->DR1; | |
3946 | exec2.DR4 = args->DR4; | |
3947 | exec2.num_cliprects = args->num_cliprects; | |
3948 | exec2.cliprects_ptr = args->cliprects_ptr; | |
852835f3 | 3949 | exec2.flags = I915_EXEC_RENDER; |
76446cac JB |
3950 | |
3951 | ret = i915_gem_do_execbuffer(dev, data, file_priv, &exec2, exec2_list); | |
3952 | if (!ret) { | |
3953 | /* Copy the new buffer offsets back to the user's exec list. */ | |
3954 | for (i = 0; i < args->buffer_count; i++) | |
3955 | exec_list[i].offset = exec2_list[i].offset; | |
3956 | /* ... and back out to userspace */ | |
3957 | ret = copy_to_user((struct drm_i915_relocation_entry __user *) | |
3958 | (uintptr_t) args->buffers_ptr, | |
3959 | exec_list, | |
3960 | sizeof(*exec_list) * args->buffer_count); | |
3961 | if (ret) { | |
3962 | ret = -EFAULT; | |
3963 | DRM_ERROR("failed to copy %d exec entries " | |
3964 | "back to user (%d)\n", | |
3965 | args->buffer_count, ret); | |
3966 | } | |
76446cac JB |
3967 | } |
3968 | ||
3969 | drm_free_large(exec_list); | |
3970 | drm_free_large(exec2_list); | |
3971 | return ret; | |
3972 | } | |
3973 | ||
3974 | int | |
3975 | i915_gem_execbuffer2(struct drm_device *dev, void *data, | |
3976 | struct drm_file *file_priv) | |
3977 | { | |
3978 | struct drm_i915_gem_execbuffer2 *args = data; | |
3979 | struct drm_i915_gem_exec_object2 *exec2_list = NULL; | |
3980 | int ret; | |
3981 | ||
3982 | #if WATCH_EXEC | |
3983 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", | |
3984 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); | |
3985 | #endif | |
3986 | ||
3987 | if (args->buffer_count < 1) { | |
3988 | DRM_ERROR("execbuf2 with %d buffers\n", args->buffer_count); | |
3989 | return -EINVAL; | |
3990 | } | |
3991 | ||
3992 | exec2_list = drm_malloc_ab(sizeof(*exec2_list), args->buffer_count); | |
3993 | if (exec2_list == NULL) { | |
3994 | DRM_ERROR("Failed to allocate exec list for %d buffers\n", | |
3995 | args->buffer_count); | |
3996 | return -ENOMEM; | |
3997 | } | |
3998 | ret = copy_from_user(exec2_list, | |
3999 | (struct drm_i915_relocation_entry __user *) | |
4000 | (uintptr_t) args->buffers_ptr, | |
4001 | sizeof(*exec2_list) * args->buffer_count); | |
4002 | if (ret != 0) { | |
4003 | DRM_ERROR("copy %d exec entries failed %d\n", | |
4004 | args->buffer_count, ret); | |
4005 | drm_free_large(exec2_list); | |
4006 | return -EFAULT; | |
4007 | } | |
4008 | ||
4009 | ret = i915_gem_do_execbuffer(dev, data, file_priv, args, exec2_list); | |
4010 | if (!ret) { | |
4011 | /* Copy the new buffer offsets back to the user's exec list. */ | |
4012 | ret = copy_to_user((struct drm_i915_relocation_entry __user *) | |
4013 | (uintptr_t) args->buffers_ptr, | |
4014 | exec2_list, | |
4015 | sizeof(*exec2_list) * args->buffer_count); | |
4016 | if (ret) { | |
4017 | ret = -EFAULT; | |
4018 | DRM_ERROR("failed to copy %d exec entries " | |
4019 | "back to user (%d)\n", | |
4020 | args->buffer_count, ret); | |
4021 | } | |
4022 | } | |
4023 | ||
4024 | drm_free_large(exec2_list); | |
4025 | return ret; | |
4026 | } | |
4027 | ||
673a394b EA |
4028 | int |
4029 | i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment) | |
4030 | { | |
4031 | struct drm_device *dev = obj->dev; | |
f13d3f73 | 4032 | struct drm_i915_private *dev_priv = dev->dev_private; |
23010e43 | 4033 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b EA |
4034 | int ret; |
4035 | ||
778c3544 | 4036 | BUG_ON(obj_priv->pin_count == DRM_I915_GEM_OBJECT_MAX_PIN_COUNT); |
23bc5982 | 4037 | WARN_ON(i915_verify_lists(dev)); |
ac0c6b5a CW |
4038 | |
4039 | if (obj_priv->gtt_space != NULL) { | |
4040 | if (alignment == 0) | |
4041 | alignment = i915_gem_get_gtt_alignment(obj); | |
4042 | if (obj_priv->gtt_offset & (alignment - 1)) { | |
ae7d49d8 CW |
4043 | WARN(obj_priv->pin_count, |
4044 | "bo is already pinned with incorrect alignment:" | |
4045 | " offset=%x, req.alignment=%x\n", | |
4046 | obj_priv->gtt_offset, alignment); | |
ac0c6b5a CW |
4047 | ret = i915_gem_object_unbind(obj); |
4048 | if (ret) | |
4049 | return ret; | |
4050 | } | |
4051 | } | |
4052 | ||
673a394b EA |
4053 | if (obj_priv->gtt_space == NULL) { |
4054 | ret = i915_gem_object_bind_to_gtt(obj, alignment); | |
9731129c | 4055 | if (ret) |
673a394b | 4056 | return ret; |
22c344e9 | 4057 | } |
76446cac | 4058 | |
673a394b EA |
4059 | obj_priv->pin_count++; |
4060 | ||
4061 | /* If the object is not active and not pending a flush, | |
4062 | * remove it from the inactive list | |
4063 | */ | |
4064 | if (obj_priv->pin_count == 1) { | |
73aa808f | 4065 | i915_gem_info_add_pin(dev_priv, obj->size); |
f13d3f73 | 4066 | if (!obj_priv->active) |
69dc4987 | 4067 | list_move_tail(&obj_priv->mm_list, |
f13d3f73 | 4068 | &dev_priv->mm.pinned_list); |
673a394b | 4069 | } |
673a394b | 4070 | |
23bc5982 | 4071 | WARN_ON(i915_verify_lists(dev)); |
673a394b EA |
4072 | return 0; |
4073 | } | |
4074 | ||
4075 | void | |
4076 | i915_gem_object_unpin(struct drm_gem_object *obj) | |
4077 | { | |
4078 | struct drm_device *dev = obj->dev; | |
4079 | drm_i915_private_t *dev_priv = dev->dev_private; | |
23010e43 | 4080 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
673a394b | 4081 | |
23bc5982 | 4082 | WARN_ON(i915_verify_lists(dev)); |
673a394b EA |
4083 | obj_priv->pin_count--; |
4084 | BUG_ON(obj_priv->pin_count < 0); | |
4085 | BUG_ON(obj_priv->gtt_space == NULL); | |
4086 | ||
4087 | /* If the object is no longer pinned, and is | |
4088 | * neither active nor being flushed, then stick it on | |
4089 | * the inactive list | |
4090 | */ | |
4091 | if (obj_priv->pin_count == 0) { | |
f13d3f73 | 4092 | if (!obj_priv->active) |
69dc4987 | 4093 | list_move_tail(&obj_priv->mm_list, |
673a394b | 4094 | &dev_priv->mm.inactive_list); |
73aa808f | 4095 | i915_gem_info_remove_pin(dev_priv, obj->size); |
673a394b | 4096 | } |
23bc5982 | 4097 | WARN_ON(i915_verify_lists(dev)); |
673a394b EA |
4098 | } |
4099 | ||
4100 | int | |
4101 | i915_gem_pin_ioctl(struct drm_device *dev, void *data, | |
4102 | struct drm_file *file_priv) | |
4103 | { | |
4104 | struct drm_i915_gem_pin *args = data; | |
4105 | struct drm_gem_object *obj; | |
4106 | struct drm_i915_gem_object *obj_priv; | |
4107 | int ret; | |
4108 | ||
1d7cfea1 CW |
4109 | ret = i915_mutex_lock_interruptible(dev); |
4110 | if (ret) | |
4111 | return ret; | |
673a394b EA |
4112 | |
4113 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
4114 | if (obj == NULL) { | |
1d7cfea1 CW |
4115 | ret = -ENOENT; |
4116 | goto unlock; | |
673a394b | 4117 | } |
23010e43 | 4118 | obj_priv = to_intel_bo(obj); |
673a394b | 4119 | |
bb6baf76 CW |
4120 | if (obj_priv->madv != I915_MADV_WILLNEED) { |
4121 | DRM_ERROR("Attempting to pin a purgeable buffer\n"); | |
1d7cfea1 CW |
4122 | ret = -EINVAL; |
4123 | goto out; | |
3ef94daa CW |
4124 | } |
4125 | ||
79e53945 JB |
4126 | if (obj_priv->pin_filp != NULL && obj_priv->pin_filp != file_priv) { |
4127 | DRM_ERROR("Already pinned in i915_gem_pin_ioctl(): %d\n", | |
4128 | args->handle); | |
1d7cfea1 CW |
4129 | ret = -EINVAL; |
4130 | goto out; | |
79e53945 JB |
4131 | } |
4132 | ||
4133 | obj_priv->user_pin_count++; | |
4134 | obj_priv->pin_filp = file_priv; | |
4135 | if (obj_priv->user_pin_count == 1) { | |
4136 | ret = i915_gem_object_pin(obj, args->alignment); | |
1d7cfea1 CW |
4137 | if (ret) |
4138 | goto out; | |
673a394b EA |
4139 | } |
4140 | ||
4141 | /* XXX - flush the CPU caches for pinned objects | |
4142 | * as the X server doesn't manage domains yet | |
4143 | */ | |
e47c68e9 | 4144 | i915_gem_object_flush_cpu_write_domain(obj); |
673a394b | 4145 | args->offset = obj_priv->gtt_offset; |
1d7cfea1 | 4146 | out: |
673a394b | 4147 | drm_gem_object_unreference(obj); |
1d7cfea1 | 4148 | unlock: |
673a394b | 4149 | mutex_unlock(&dev->struct_mutex); |
1d7cfea1 | 4150 | return ret; |
673a394b EA |
4151 | } |
4152 | ||
4153 | int | |
4154 | i915_gem_unpin_ioctl(struct drm_device *dev, void *data, | |
4155 | struct drm_file *file_priv) | |
4156 | { | |
4157 | struct drm_i915_gem_pin *args = data; | |
4158 | struct drm_gem_object *obj; | |
79e53945 | 4159 | struct drm_i915_gem_object *obj_priv; |
76c1dec1 | 4160 | int ret; |
673a394b | 4161 | |
1d7cfea1 CW |
4162 | ret = i915_mutex_lock_interruptible(dev); |
4163 | if (ret) | |
4164 | return ret; | |
673a394b EA |
4165 | |
4166 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
4167 | if (obj == NULL) { | |
1d7cfea1 CW |
4168 | ret = -ENOENT; |
4169 | goto unlock; | |
673a394b | 4170 | } |
23010e43 | 4171 | obj_priv = to_intel_bo(obj); |
76c1dec1 | 4172 | |
79e53945 JB |
4173 | if (obj_priv->pin_filp != file_priv) { |
4174 | DRM_ERROR("Not pinned by caller in i915_gem_pin_ioctl(): %d\n", | |
4175 | args->handle); | |
1d7cfea1 CW |
4176 | ret = -EINVAL; |
4177 | goto out; | |
79e53945 JB |
4178 | } |
4179 | obj_priv->user_pin_count--; | |
4180 | if (obj_priv->user_pin_count == 0) { | |
4181 | obj_priv->pin_filp = NULL; | |
4182 | i915_gem_object_unpin(obj); | |
4183 | } | |
673a394b | 4184 | |
1d7cfea1 | 4185 | out: |
673a394b | 4186 | drm_gem_object_unreference(obj); |
1d7cfea1 | 4187 | unlock: |
673a394b | 4188 | mutex_unlock(&dev->struct_mutex); |
1d7cfea1 | 4189 | return ret; |
673a394b EA |
4190 | } |
4191 | ||
4192 | int | |
4193 | i915_gem_busy_ioctl(struct drm_device *dev, void *data, | |
4194 | struct drm_file *file_priv) | |
4195 | { | |
4196 | struct drm_i915_gem_busy *args = data; | |
4197 | struct drm_gem_object *obj; | |
4198 | struct drm_i915_gem_object *obj_priv; | |
30dbf0c0 CW |
4199 | int ret; |
4200 | ||
76c1dec1 | 4201 | ret = i915_mutex_lock_interruptible(dev); |
1d7cfea1 | 4202 | if (ret) |
76c1dec1 | 4203 | return ret; |
673a394b | 4204 | |
673a394b EA |
4205 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
4206 | if (obj == NULL) { | |
1d7cfea1 CW |
4207 | ret = -ENOENT; |
4208 | goto unlock; | |
673a394b | 4209 | } |
1d7cfea1 | 4210 | obj_priv = to_intel_bo(obj); |
d1b851fc | 4211 | |
0be555b6 CW |
4212 | /* Count all active objects as busy, even if they are currently not used |
4213 | * by the gpu. Users of this interface expect objects to eventually | |
4214 | * become non-busy without any further actions, therefore emit any | |
4215 | * necessary flushes here. | |
c4de0a5d | 4216 | */ |
0be555b6 CW |
4217 | args->busy = obj_priv->active; |
4218 | if (args->busy) { | |
4219 | /* Unconditionally flush objects, even when the gpu still uses this | |
4220 | * object. Userspace calling this function indicates that it wants to | |
4221 | * use this buffer rather sooner than later, so issuing the required | |
4222 | * flush earlier is beneficial. | |
4223 | */ | |
c78ec30b CW |
4224 | if (obj->write_domain & I915_GEM_GPU_DOMAINS) |
4225 | i915_gem_flush_ring(dev, file_priv, | |
9220434a CW |
4226 | obj_priv->ring, |
4227 | 0, obj->write_domain); | |
0be555b6 CW |
4228 | |
4229 | /* Update the active list for the hardware's current position. | |
4230 | * Otherwise this only updates on a delayed timer or when irqs | |
4231 | * are actually unmasked, and our working set ends up being | |
4232 | * larger than required. | |
4233 | */ | |
4234 | i915_gem_retire_requests_ring(dev, obj_priv->ring); | |
4235 | ||
4236 | args->busy = obj_priv->active; | |
4237 | } | |
673a394b EA |
4238 | |
4239 | drm_gem_object_unreference(obj); | |
1d7cfea1 | 4240 | unlock: |
673a394b | 4241 | mutex_unlock(&dev->struct_mutex); |
1d7cfea1 | 4242 | return ret; |
673a394b EA |
4243 | } |
4244 | ||
4245 | int | |
4246 | i915_gem_throttle_ioctl(struct drm_device *dev, void *data, | |
4247 | struct drm_file *file_priv) | |
4248 | { | |
4249 | return i915_gem_ring_throttle(dev, file_priv); | |
4250 | } | |
4251 | ||
3ef94daa CW |
4252 | int |
4253 | i915_gem_madvise_ioctl(struct drm_device *dev, void *data, | |
4254 | struct drm_file *file_priv) | |
4255 | { | |
4256 | struct drm_i915_gem_madvise *args = data; | |
4257 | struct drm_gem_object *obj; | |
4258 | struct drm_i915_gem_object *obj_priv; | |
76c1dec1 | 4259 | int ret; |
3ef94daa CW |
4260 | |
4261 | switch (args->madv) { | |
4262 | case I915_MADV_DONTNEED: | |
4263 | case I915_MADV_WILLNEED: | |
4264 | break; | |
4265 | default: | |
4266 | return -EINVAL; | |
4267 | } | |
4268 | ||
1d7cfea1 CW |
4269 | ret = i915_mutex_lock_interruptible(dev); |
4270 | if (ret) | |
4271 | return ret; | |
4272 | ||
3ef94daa CW |
4273 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
4274 | if (obj == NULL) { | |
1d7cfea1 CW |
4275 | ret = -ENOENT; |
4276 | goto unlock; | |
3ef94daa | 4277 | } |
23010e43 | 4278 | obj_priv = to_intel_bo(obj); |
3ef94daa CW |
4279 | |
4280 | if (obj_priv->pin_count) { | |
1d7cfea1 CW |
4281 | ret = -EINVAL; |
4282 | goto out; | |
3ef94daa CW |
4283 | } |
4284 | ||
bb6baf76 CW |
4285 | if (obj_priv->madv != __I915_MADV_PURGED) |
4286 | obj_priv->madv = args->madv; | |
3ef94daa | 4287 | |
2d7ef395 CW |
4288 | /* if the object is no longer bound, discard its backing storage */ |
4289 | if (i915_gem_object_is_purgeable(obj_priv) && | |
4290 | obj_priv->gtt_space == NULL) | |
4291 | i915_gem_object_truncate(obj); | |
4292 | ||
bb6baf76 CW |
4293 | args->retained = obj_priv->madv != __I915_MADV_PURGED; |
4294 | ||
1d7cfea1 | 4295 | out: |
3ef94daa | 4296 | drm_gem_object_unreference(obj); |
1d7cfea1 | 4297 | unlock: |
3ef94daa | 4298 | mutex_unlock(&dev->struct_mutex); |
1d7cfea1 | 4299 | return ret; |
3ef94daa CW |
4300 | } |
4301 | ||
ac52bc56 DV |
4302 | struct drm_gem_object * i915_gem_alloc_object(struct drm_device *dev, |
4303 | size_t size) | |
4304 | { | |
73aa808f | 4305 | struct drm_i915_private *dev_priv = dev->dev_private; |
c397b908 | 4306 | struct drm_i915_gem_object *obj; |
ac52bc56 | 4307 | |
c397b908 DV |
4308 | obj = kzalloc(sizeof(*obj), GFP_KERNEL); |
4309 | if (obj == NULL) | |
4310 | return NULL; | |
673a394b | 4311 | |
c397b908 DV |
4312 | if (drm_gem_object_init(dev, &obj->base, size) != 0) { |
4313 | kfree(obj); | |
4314 | return NULL; | |
4315 | } | |
673a394b | 4316 | |
73aa808f CW |
4317 | i915_gem_info_add_obj(dev_priv, size); |
4318 | ||
c397b908 DV |
4319 | obj->base.write_domain = I915_GEM_DOMAIN_CPU; |
4320 | obj->base.read_domains = I915_GEM_DOMAIN_CPU; | |
673a394b | 4321 | |
c397b908 | 4322 | obj->agp_type = AGP_USER_MEMORY; |
62b8b215 | 4323 | obj->base.driver_private = NULL; |
c397b908 | 4324 | obj->fence_reg = I915_FENCE_REG_NONE; |
69dc4987 CW |
4325 | INIT_LIST_HEAD(&obj->mm_list); |
4326 | INIT_LIST_HEAD(&obj->ring_list); | |
c397b908 | 4327 | INIT_LIST_HEAD(&obj->gpu_write_list); |
c397b908 | 4328 | obj->madv = I915_MADV_WILLNEED; |
de151cf6 | 4329 | |
c397b908 DV |
4330 | return &obj->base; |
4331 | } | |
4332 | ||
4333 | int i915_gem_init_object(struct drm_gem_object *obj) | |
4334 | { | |
4335 | BUG(); | |
de151cf6 | 4336 | |
673a394b EA |
4337 | return 0; |
4338 | } | |
4339 | ||
be72615b | 4340 | static void i915_gem_free_object_tail(struct drm_gem_object *obj) |
673a394b | 4341 | { |
de151cf6 | 4342 | struct drm_device *dev = obj->dev; |
be72615b | 4343 | drm_i915_private_t *dev_priv = dev->dev_private; |
23010e43 | 4344 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
be72615b | 4345 | int ret; |
673a394b | 4346 | |
be72615b CW |
4347 | ret = i915_gem_object_unbind(obj); |
4348 | if (ret == -ERESTARTSYS) { | |
69dc4987 | 4349 | list_move(&obj_priv->mm_list, |
be72615b CW |
4350 | &dev_priv->mm.deferred_free_list); |
4351 | return; | |
4352 | } | |
673a394b | 4353 | |
7e616158 CW |
4354 | if (obj_priv->mmap_offset) |
4355 | i915_gem_free_mmap_offset(obj); | |
de151cf6 | 4356 | |
c397b908 | 4357 | drm_gem_object_release(obj); |
73aa808f | 4358 | i915_gem_info_remove_obj(dev_priv, obj->size); |
c397b908 | 4359 | |
9a298b2a | 4360 | kfree(obj_priv->page_cpu_valid); |
280b713b | 4361 | kfree(obj_priv->bit_17); |
c397b908 | 4362 | kfree(obj_priv); |
673a394b EA |
4363 | } |
4364 | ||
be72615b CW |
4365 | void i915_gem_free_object(struct drm_gem_object *obj) |
4366 | { | |
4367 | struct drm_device *dev = obj->dev; | |
4368 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); | |
4369 | ||
4370 | trace_i915_gem_object_destroy(obj); | |
4371 | ||
4372 | while (obj_priv->pin_count > 0) | |
4373 | i915_gem_object_unpin(obj); | |
4374 | ||
4375 | if (obj_priv->phys_obj) | |
4376 | i915_gem_detach_phys_object(dev, obj); | |
4377 | ||
4378 | i915_gem_free_object_tail(obj); | |
4379 | } | |
4380 | ||
29105ccc CW |
4381 | int |
4382 | i915_gem_idle(struct drm_device *dev) | |
4383 | { | |
4384 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4385 | int ret; | |
28dfe52a | 4386 | |
29105ccc | 4387 | mutex_lock(&dev->struct_mutex); |
1c5d22f7 | 4388 | |
87acb0a5 | 4389 | if (dev_priv->mm.suspended) { |
29105ccc CW |
4390 | mutex_unlock(&dev->struct_mutex); |
4391 | return 0; | |
28dfe52a EA |
4392 | } |
4393 | ||
29105ccc | 4394 | ret = i915_gpu_idle(dev); |
6dbe2772 KP |
4395 | if (ret) { |
4396 | mutex_unlock(&dev->struct_mutex); | |
673a394b | 4397 | return ret; |
6dbe2772 | 4398 | } |
673a394b | 4399 | |
29105ccc CW |
4400 | /* Under UMS, be paranoid and evict. */ |
4401 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) { | |
b47eb4a2 | 4402 | ret = i915_gem_evict_inactive(dev); |
29105ccc CW |
4403 | if (ret) { |
4404 | mutex_unlock(&dev->struct_mutex); | |
4405 | return ret; | |
4406 | } | |
4407 | } | |
4408 | ||
4409 | /* Hack! Don't let anybody do execbuf while we don't control the chip. | |
4410 | * We need to replace this with a semaphore, or something. | |
4411 | * And not confound mm.suspended! | |
4412 | */ | |
4413 | dev_priv->mm.suspended = 1; | |
bc0c7f14 | 4414 | del_timer_sync(&dev_priv->hangcheck_timer); |
29105ccc CW |
4415 | |
4416 | i915_kernel_lost_context(dev); | |
6dbe2772 | 4417 | i915_gem_cleanup_ringbuffer(dev); |
29105ccc | 4418 | |
6dbe2772 KP |
4419 | mutex_unlock(&dev->struct_mutex); |
4420 | ||
29105ccc CW |
4421 | /* Cancel the retire work handler, which should be idle now. */ |
4422 | cancel_delayed_work_sync(&dev_priv->mm.retire_work); | |
4423 | ||
673a394b EA |
4424 | return 0; |
4425 | } | |
4426 | ||
e552eb70 JB |
4427 | /* |
4428 | * 965+ support PIPE_CONTROL commands, which provide finer grained control | |
4429 | * over cache flushing. | |
4430 | */ | |
8187a2b7 | 4431 | static int |
e552eb70 JB |
4432 | i915_gem_init_pipe_control(struct drm_device *dev) |
4433 | { | |
4434 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4435 | struct drm_gem_object *obj; | |
4436 | struct drm_i915_gem_object *obj_priv; | |
4437 | int ret; | |
4438 | ||
34dc4d44 | 4439 | obj = i915_gem_alloc_object(dev, 4096); |
e552eb70 JB |
4440 | if (obj == NULL) { |
4441 | DRM_ERROR("Failed to allocate seqno page\n"); | |
4442 | ret = -ENOMEM; | |
4443 | goto err; | |
4444 | } | |
4445 | obj_priv = to_intel_bo(obj); | |
4446 | obj_priv->agp_type = AGP_USER_CACHED_MEMORY; | |
4447 | ||
4448 | ret = i915_gem_object_pin(obj, 4096); | |
4449 | if (ret) | |
4450 | goto err_unref; | |
4451 | ||
4452 | dev_priv->seqno_gfx_addr = obj_priv->gtt_offset; | |
4453 | dev_priv->seqno_page = kmap(obj_priv->pages[0]); | |
4454 | if (dev_priv->seqno_page == NULL) | |
4455 | goto err_unpin; | |
4456 | ||
4457 | dev_priv->seqno_obj = obj; | |
4458 | memset(dev_priv->seqno_page, 0, PAGE_SIZE); | |
4459 | ||
4460 | return 0; | |
4461 | ||
4462 | err_unpin: | |
4463 | i915_gem_object_unpin(obj); | |
4464 | err_unref: | |
4465 | drm_gem_object_unreference(obj); | |
4466 | err: | |
4467 | return ret; | |
4468 | } | |
4469 | ||
8187a2b7 ZN |
4470 | |
4471 | static void | |
e552eb70 JB |
4472 | i915_gem_cleanup_pipe_control(struct drm_device *dev) |
4473 | { | |
4474 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4475 | struct drm_gem_object *obj; | |
4476 | struct drm_i915_gem_object *obj_priv; | |
4477 | ||
4478 | obj = dev_priv->seqno_obj; | |
4479 | obj_priv = to_intel_bo(obj); | |
4480 | kunmap(obj_priv->pages[0]); | |
4481 | i915_gem_object_unpin(obj); | |
4482 | drm_gem_object_unreference(obj); | |
4483 | dev_priv->seqno_obj = NULL; | |
4484 | ||
4485 | dev_priv->seqno_page = NULL; | |
673a394b EA |
4486 | } |
4487 | ||
8187a2b7 ZN |
4488 | int |
4489 | i915_gem_init_ringbuffer(struct drm_device *dev) | |
4490 | { | |
4491 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4492 | int ret; | |
68f95ba9 | 4493 | |
8187a2b7 ZN |
4494 | if (HAS_PIPE_CONTROL(dev)) { |
4495 | ret = i915_gem_init_pipe_control(dev); | |
4496 | if (ret) | |
4497 | return ret; | |
4498 | } | |
68f95ba9 | 4499 | |
5c1143bb | 4500 | ret = intel_init_render_ring_buffer(dev); |
68f95ba9 CW |
4501 | if (ret) |
4502 | goto cleanup_pipe_control; | |
4503 | ||
4504 | if (HAS_BSD(dev)) { | |
5c1143bb | 4505 | ret = intel_init_bsd_ring_buffer(dev); |
68f95ba9 CW |
4506 | if (ret) |
4507 | goto cleanup_render_ring; | |
d1b851fc | 4508 | } |
68f95ba9 | 4509 | |
549f7365 CW |
4510 | if (HAS_BLT(dev)) { |
4511 | ret = intel_init_blt_ring_buffer(dev); | |
4512 | if (ret) | |
4513 | goto cleanup_bsd_ring; | |
4514 | } | |
4515 | ||
6f392d54 CW |
4516 | dev_priv->next_seqno = 1; |
4517 | ||
68f95ba9 CW |
4518 | return 0; |
4519 | ||
549f7365 | 4520 | cleanup_bsd_ring: |
78501eac | 4521 | intel_cleanup_ring_buffer(&dev_priv->bsd_ring); |
68f95ba9 | 4522 | cleanup_render_ring: |
78501eac | 4523 | intel_cleanup_ring_buffer(&dev_priv->render_ring); |
68f95ba9 CW |
4524 | cleanup_pipe_control: |
4525 | if (HAS_PIPE_CONTROL(dev)) | |
4526 | i915_gem_cleanup_pipe_control(dev); | |
8187a2b7 ZN |
4527 | return ret; |
4528 | } | |
4529 | ||
4530 | void | |
4531 | i915_gem_cleanup_ringbuffer(struct drm_device *dev) | |
4532 | { | |
4533 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4534 | ||
78501eac CW |
4535 | intel_cleanup_ring_buffer(&dev_priv->render_ring); |
4536 | intel_cleanup_ring_buffer(&dev_priv->bsd_ring); | |
4537 | intel_cleanup_ring_buffer(&dev_priv->blt_ring); | |
8187a2b7 ZN |
4538 | if (HAS_PIPE_CONTROL(dev)) |
4539 | i915_gem_cleanup_pipe_control(dev); | |
4540 | } | |
4541 | ||
673a394b EA |
4542 | int |
4543 | i915_gem_entervt_ioctl(struct drm_device *dev, void *data, | |
4544 | struct drm_file *file_priv) | |
4545 | { | |
4546 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4547 | int ret; | |
4548 | ||
79e53945 JB |
4549 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
4550 | return 0; | |
4551 | ||
ba1234d1 | 4552 | if (atomic_read(&dev_priv->mm.wedged)) { |
673a394b | 4553 | DRM_ERROR("Reenabling wedged hardware, good luck\n"); |
ba1234d1 | 4554 | atomic_set(&dev_priv->mm.wedged, 0); |
673a394b EA |
4555 | } |
4556 | ||
673a394b | 4557 | mutex_lock(&dev->struct_mutex); |
9bb2d6f9 EA |
4558 | dev_priv->mm.suspended = 0; |
4559 | ||
4560 | ret = i915_gem_init_ringbuffer(dev); | |
d816f6ac WF |
4561 | if (ret != 0) { |
4562 | mutex_unlock(&dev->struct_mutex); | |
9bb2d6f9 | 4563 | return ret; |
d816f6ac | 4564 | } |
9bb2d6f9 | 4565 | |
69dc4987 | 4566 | BUG_ON(!list_empty(&dev_priv->mm.active_list)); |
852835f3 | 4567 | BUG_ON(!list_empty(&dev_priv->render_ring.active_list)); |
87acb0a5 | 4568 | BUG_ON(!list_empty(&dev_priv->bsd_ring.active_list)); |
549f7365 | 4569 | BUG_ON(!list_empty(&dev_priv->blt_ring.active_list)); |
673a394b EA |
4570 | BUG_ON(!list_empty(&dev_priv->mm.flushing_list)); |
4571 | BUG_ON(!list_empty(&dev_priv->mm.inactive_list)); | |
852835f3 | 4572 | BUG_ON(!list_empty(&dev_priv->render_ring.request_list)); |
87acb0a5 | 4573 | BUG_ON(!list_empty(&dev_priv->bsd_ring.request_list)); |
549f7365 | 4574 | BUG_ON(!list_empty(&dev_priv->blt_ring.request_list)); |
673a394b | 4575 | mutex_unlock(&dev->struct_mutex); |
dbb19d30 | 4576 | |
5f35308b CW |
4577 | ret = drm_irq_install(dev); |
4578 | if (ret) | |
4579 | goto cleanup_ringbuffer; | |
dbb19d30 | 4580 | |
673a394b | 4581 | return 0; |
5f35308b CW |
4582 | |
4583 | cleanup_ringbuffer: | |
4584 | mutex_lock(&dev->struct_mutex); | |
4585 | i915_gem_cleanup_ringbuffer(dev); | |
4586 | dev_priv->mm.suspended = 1; | |
4587 | mutex_unlock(&dev->struct_mutex); | |
4588 | ||
4589 | return ret; | |
673a394b EA |
4590 | } |
4591 | ||
4592 | int | |
4593 | i915_gem_leavevt_ioctl(struct drm_device *dev, void *data, | |
4594 | struct drm_file *file_priv) | |
4595 | { | |
79e53945 JB |
4596 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
4597 | return 0; | |
4598 | ||
dbb19d30 | 4599 | drm_irq_uninstall(dev); |
e6890f6f | 4600 | return i915_gem_idle(dev); |
673a394b EA |
4601 | } |
4602 | ||
4603 | void | |
4604 | i915_gem_lastclose(struct drm_device *dev) | |
4605 | { | |
4606 | int ret; | |
673a394b | 4607 | |
e806b495 EA |
4608 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
4609 | return; | |
4610 | ||
6dbe2772 KP |
4611 | ret = i915_gem_idle(dev); |
4612 | if (ret) | |
4613 | DRM_ERROR("failed to idle hardware: %d\n", ret); | |
673a394b EA |
4614 | } |
4615 | ||
64193406 CW |
4616 | static void |
4617 | init_ring_lists(struct intel_ring_buffer *ring) | |
4618 | { | |
4619 | INIT_LIST_HEAD(&ring->active_list); | |
4620 | INIT_LIST_HEAD(&ring->request_list); | |
4621 | INIT_LIST_HEAD(&ring->gpu_write_list); | |
4622 | } | |
4623 | ||
673a394b EA |
4624 | void |
4625 | i915_gem_load(struct drm_device *dev) | |
4626 | { | |
b5aa8a0f | 4627 | int i; |
673a394b EA |
4628 | drm_i915_private_t *dev_priv = dev->dev_private; |
4629 | ||
69dc4987 | 4630 | INIT_LIST_HEAD(&dev_priv->mm.active_list); |
673a394b EA |
4631 | INIT_LIST_HEAD(&dev_priv->mm.flushing_list); |
4632 | INIT_LIST_HEAD(&dev_priv->mm.inactive_list); | |
f13d3f73 | 4633 | INIT_LIST_HEAD(&dev_priv->mm.pinned_list); |
a09ba7fa | 4634 | INIT_LIST_HEAD(&dev_priv->mm.fence_list); |
be72615b | 4635 | INIT_LIST_HEAD(&dev_priv->mm.deferred_free_list); |
64193406 CW |
4636 | init_ring_lists(&dev_priv->render_ring); |
4637 | init_ring_lists(&dev_priv->bsd_ring); | |
4638 | init_ring_lists(&dev_priv->blt_ring); | |
007cc8ac DV |
4639 | for (i = 0; i < 16; i++) |
4640 | INIT_LIST_HEAD(&dev_priv->fence_regs[i].lru_list); | |
673a394b EA |
4641 | INIT_DELAYED_WORK(&dev_priv->mm.retire_work, |
4642 | i915_gem_retire_work_handler); | |
30dbf0c0 | 4643 | init_completion(&dev_priv->error_completion); |
31169714 CW |
4644 | spin_lock(&shrink_list_lock); |
4645 | list_add(&dev_priv->mm.shrink_list, &shrink_list); | |
4646 | spin_unlock(&shrink_list_lock); | |
4647 | ||
94400120 DA |
4648 | /* On GEN3 we really need to make sure the ARB C3 LP bit is set */ |
4649 | if (IS_GEN3(dev)) { | |
4650 | u32 tmp = I915_READ(MI_ARB_STATE); | |
4651 | if (!(tmp & MI_ARB_C3_LP_WRITE_ENABLE)) { | |
4652 | /* arb state is a masked write, so set bit + bit in mask */ | |
4653 | tmp = MI_ARB_C3_LP_WRITE_ENABLE | (MI_ARB_C3_LP_WRITE_ENABLE << MI_ARB_MASK_SHIFT); | |
4654 | I915_WRITE(MI_ARB_STATE, tmp); | |
4655 | } | |
4656 | } | |
4657 | ||
de151cf6 | 4658 | /* Old X drivers will take 0-2 for front, back, depth buffers */ |
b397c836 EA |
4659 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
4660 | dev_priv->fence_reg_start = 3; | |
de151cf6 | 4661 | |
a6c45cf0 | 4662 | if (INTEL_INFO(dev)->gen >= 4 || IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) |
de151cf6 JB |
4663 | dev_priv->num_fence_regs = 16; |
4664 | else | |
4665 | dev_priv->num_fence_regs = 8; | |
4666 | ||
b5aa8a0f | 4667 | /* Initialize fence registers to zero */ |
a6c45cf0 CW |
4668 | switch (INTEL_INFO(dev)->gen) { |
4669 | case 6: | |
4670 | for (i = 0; i < 16; i++) | |
4671 | I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + (i * 8), 0); | |
4672 | break; | |
4673 | case 5: | |
4674 | case 4: | |
b5aa8a0f GH |
4675 | for (i = 0; i < 16; i++) |
4676 | I915_WRITE64(FENCE_REG_965_0 + (i * 8), 0); | |
a6c45cf0 CW |
4677 | break; |
4678 | case 3: | |
b5aa8a0f GH |
4679 | if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) |
4680 | for (i = 0; i < 8; i++) | |
4681 | I915_WRITE(FENCE_REG_945_8 + (i * 4), 0); | |
a6c45cf0 CW |
4682 | case 2: |
4683 | for (i = 0; i < 8; i++) | |
4684 | I915_WRITE(FENCE_REG_830_0 + (i * 4), 0); | |
4685 | break; | |
b5aa8a0f | 4686 | } |
673a394b | 4687 | i915_gem_detect_bit_6_swizzle(dev); |
6b95a207 | 4688 | init_waitqueue_head(&dev_priv->pending_flip_queue); |
673a394b | 4689 | } |
71acb5eb DA |
4690 | |
4691 | /* | |
4692 | * Create a physically contiguous memory object for this object | |
4693 | * e.g. for cursor + overlay regs | |
4694 | */ | |
995b6762 CW |
4695 | static int i915_gem_init_phys_object(struct drm_device *dev, |
4696 | int id, int size, int align) | |
71acb5eb DA |
4697 | { |
4698 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4699 | struct drm_i915_gem_phys_object *phys_obj; | |
4700 | int ret; | |
4701 | ||
4702 | if (dev_priv->mm.phys_objs[id - 1] || !size) | |
4703 | return 0; | |
4704 | ||
9a298b2a | 4705 | phys_obj = kzalloc(sizeof(struct drm_i915_gem_phys_object), GFP_KERNEL); |
71acb5eb DA |
4706 | if (!phys_obj) |
4707 | return -ENOMEM; | |
4708 | ||
4709 | phys_obj->id = id; | |
4710 | ||
6eeefaf3 | 4711 | phys_obj->handle = drm_pci_alloc(dev, size, align); |
71acb5eb DA |
4712 | if (!phys_obj->handle) { |
4713 | ret = -ENOMEM; | |
4714 | goto kfree_obj; | |
4715 | } | |
4716 | #ifdef CONFIG_X86 | |
4717 | set_memory_wc((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); | |
4718 | #endif | |
4719 | ||
4720 | dev_priv->mm.phys_objs[id - 1] = phys_obj; | |
4721 | ||
4722 | return 0; | |
4723 | kfree_obj: | |
9a298b2a | 4724 | kfree(phys_obj); |
71acb5eb DA |
4725 | return ret; |
4726 | } | |
4727 | ||
995b6762 | 4728 | static void i915_gem_free_phys_object(struct drm_device *dev, int id) |
71acb5eb DA |
4729 | { |
4730 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4731 | struct drm_i915_gem_phys_object *phys_obj; | |
4732 | ||
4733 | if (!dev_priv->mm.phys_objs[id - 1]) | |
4734 | return; | |
4735 | ||
4736 | phys_obj = dev_priv->mm.phys_objs[id - 1]; | |
4737 | if (phys_obj->cur_obj) { | |
4738 | i915_gem_detach_phys_object(dev, phys_obj->cur_obj); | |
4739 | } | |
4740 | ||
4741 | #ifdef CONFIG_X86 | |
4742 | set_memory_wb((unsigned long)phys_obj->handle->vaddr, phys_obj->handle->size / PAGE_SIZE); | |
4743 | #endif | |
4744 | drm_pci_free(dev, phys_obj->handle); | |
4745 | kfree(phys_obj); | |
4746 | dev_priv->mm.phys_objs[id - 1] = NULL; | |
4747 | } | |
4748 | ||
4749 | void i915_gem_free_all_phys_object(struct drm_device *dev) | |
4750 | { | |
4751 | int i; | |
4752 | ||
260883c8 | 4753 | for (i = I915_GEM_PHYS_CURSOR_0; i <= I915_MAX_PHYS_OBJECT; i++) |
71acb5eb DA |
4754 | i915_gem_free_phys_object(dev, i); |
4755 | } | |
4756 | ||
4757 | void i915_gem_detach_phys_object(struct drm_device *dev, | |
4758 | struct drm_gem_object *obj) | |
4759 | { | |
4760 | struct drm_i915_gem_object *obj_priv; | |
4761 | int i; | |
4762 | int ret; | |
4763 | int page_count; | |
4764 | ||
23010e43 | 4765 | obj_priv = to_intel_bo(obj); |
71acb5eb DA |
4766 | if (!obj_priv->phys_obj) |
4767 | return; | |
4768 | ||
4bdadb97 | 4769 | ret = i915_gem_object_get_pages(obj, 0); |
71acb5eb DA |
4770 | if (ret) |
4771 | goto out; | |
4772 | ||
4773 | page_count = obj->size / PAGE_SIZE; | |
4774 | ||
4775 | for (i = 0; i < page_count; i++) { | |
3e4d3af5 | 4776 | char *dst = kmap_atomic(obj_priv->pages[i]); |
71acb5eb DA |
4777 | char *src = obj_priv->phys_obj->handle->vaddr + (i * PAGE_SIZE); |
4778 | ||
4779 | memcpy(dst, src, PAGE_SIZE); | |
3e4d3af5 | 4780 | kunmap_atomic(dst); |
71acb5eb | 4781 | } |
856fa198 | 4782 | drm_clflush_pages(obj_priv->pages, page_count); |
71acb5eb | 4783 | drm_agp_chipset_flush(dev); |
d78b47b9 CW |
4784 | |
4785 | i915_gem_object_put_pages(obj); | |
71acb5eb DA |
4786 | out: |
4787 | obj_priv->phys_obj->cur_obj = NULL; | |
4788 | obj_priv->phys_obj = NULL; | |
4789 | } | |
4790 | ||
4791 | int | |
4792 | i915_gem_attach_phys_object(struct drm_device *dev, | |
6eeefaf3 CW |
4793 | struct drm_gem_object *obj, |
4794 | int id, | |
4795 | int align) | |
71acb5eb DA |
4796 | { |
4797 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4798 | struct drm_i915_gem_object *obj_priv; | |
4799 | int ret = 0; | |
4800 | int page_count; | |
4801 | int i; | |
4802 | ||
4803 | if (id > I915_MAX_PHYS_OBJECT) | |
4804 | return -EINVAL; | |
4805 | ||
23010e43 | 4806 | obj_priv = to_intel_bo(obj); |
71acb5eb DA |
4807 | |
4808 | if (obj_priv->phys_obj) { | |
4809 | if (obj_priv->phys_obj->id == id) | |
4810 | return 0; | |
4811 | i915_gem_detach_phys_object(dev, obj); | |
4812 | } | |
4813 | ||
71acb5eb DA |
4814 | /* create a new object */ |
4815 | if (!dev_priv->mm.phys_objs[id - 1]) { | |
4816 | ret = i915_gem_init_phys_object(dev, id, | |
6eeefaf3 | 4817 | obj->size, align); |
71acb5eb | 4818 | if (ret) { |
aeb565df | 4819 | DRM_ERROR("failed to init phys object %d size: %zu\n", id, obj->size); |
71acb5eb DA |
4820 | goto out; |
4821 | } | |
4822 | } | |
4823 | ||
4824 | /* bind to the object */ | |
4825 | obj_priv->phys_obj = dev_priv->mm.phys_objs[id - 1]; | |
4826 | obj_priv->phys_obj->cur_obj = obj; | |
4827 | ||
4bdadb97 | 4828 | ret = i915_gem_object_get_pages(obj, 0); |
71acb5eb DA |
4829 | if (ret) { |
4830 | DRM_ERROR("failed to get page list\n"); | |
4831 | goto out; | |
4832 | } | |
4833 | ||
4834 | page_count = obj->size / PAGE_SIZE; | |
4835 | ||
4836 | for (i = 0; i < page_count; i++) { | |
3e4d3af5 | 4837 | char *src = kmap_atomic(obj_priv->pages[i]); |
71acb5eb DA |
4838 | char *dst = obj_priv->phys_obj->handle->vaddr + (i * PAGE_SIZE); |
4839 | ||
4840 | memcpy(dst, src, PAGE_SIZE); | |
3e4d3af5 | 4841 | kunmap_atomic(src); |
71acb5eb DA |
4842 | } |
4843 | ||
d78b47b9 CW |
4844 | i915_gem_object_put_pages(obj); |
4845 | ||
71acb5eb DA |
4846 | return 0; |
4847 | out: | |
4848 | return ret; | |
4849 | } | |
4850 | ||
4851 | static int | |
4852 | i915_gem_phys_pwrite(struct drm_device *dev, struct drm_gem_object *obj, | |
4853 | struct drm_i915_gem_pwrite *args, | |
4854 | struct drm_file *file_priv) | |
4855 | { | |
23010e43 | 4856 | struct drm_i915_gem_object *obj_priv = to_intel_bo(obj); |
71acb5eb DA |
4857 | void *obj_addr; |
4858 | int ret; | |
4859 | char __user *user_data; | |
4860 | ||
4861 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
4862 | obj_addr = obj_priv->phys_obj->handle->vaddr + args->offset; | |
4863 | ||
44d98a61 | 4864 | DRM_DEBUG_DRIVER("obj_addr %p, %lld\n", obj_addr, args->size); |
71acb5eb DA |
4865 | ret = copy_from_user(obj_addr, user_data, args->size); |
4866 | if (ret) | |
4867 | return -EFAULT; | |
4868 | ||
4869 | drm_agp_chipset_flush(dev); | |
4870 | return 0; | |
4871 | } | |
b962442e | 4872 | |
f787a5f5 | 4873 | void i915_gem_release(struct drm_device *dev, struct drm_file *file) |
b962442e | 4874 | { |
f787a5f5 | 4875 | struct drm_i915_file_private *file_priv = file->driver_priv; |
b962442e EA |
4876 | |
4877 | /* Clean up our request list when the client is going away, so that | |
4878 | * later retire_requests won't dereference our soon-to-be-gone | |
4879 | * file_priv. | |
4880 | */ | |
1c25595f | 4881 | spin_lock(&file_priv->mm.lock); |
f787a5f5 CW |
4882 | while (!list_empty(&file_priv->mm.request_list)) { |
4883 | struct drm_i915_gem_request *request; | |
4884 | ||
4885 | request = list_first_entry(&file_priv->mm.request_list, | |
4886 | struct drm_i915_gem_request, | |
4887 | client_list); | |
4888 | list_del(&request->client_list); | |
4889 | request->file_priv = NULL; | |
4890 | } | |
1c25595f | 4891 | spin_unlock(&file_priv->mm.lock); |
b962442e | 4892 | } |
31169714 | 4893 | |
1637ef41 CW |
4894 | static int |
4895 | i915_gpu_is_active(struct drm_device *dev) | |
4896 | { | |
4897 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4898 | int lists_empty; | |
4899 | ||
1637ef41 | 4900 | lists_empty = list_empty(&dev_priv->mm.flushing_list) && |
87acb0a5 | 4901 | list_empty(&dev_priv->render_ring.active_list) && |
549f7365 CW |
4902 | list_empty(&dev_priv->bsd_ring.active_list) && |
4903 | list_empty(&dev_priv->blt_ring.active_list); | |
1637ef41 CW |
4904 | |
4905 | return !lists_empty; | |
4906 | } | |
4907 | ||
31169714 | 4908 | static int |
7f8275d0 | 4909 | i915_gem_shrink(struct shrinker *shrink, int nr_to_scan, gfp_t gfp_mask) |
31169714 CW |
4910 | { |
4911 | drm_i915_private_t *dev_priv, *next_dev; | |
4912 | struct drm_i915_gem_object *obj_priv, *next_obj; | |
4913 | int cnt = 0; | |
4914 | int would_deadlock = 1; | |
4915 | ||
4916 | /* "fast-path" to count number of available objects */ | |
4917 | if (nr_to_scan == 0) { | |
4918 | spin_lock(&shrink_list_lock); | |
4919 | list_for_each_entry(dev_priv, &shrink_list, mm.shrink_list) { | |
4920 | struct drm_device *dev = dev_priv->dev; | |
4921 | ||
4922 | if (mutex_trylock(&dev->struct_mutex)) { | |
4923 | list_for_each_entry(obj_priv, | |
4924 | &dev_priv->mm.inactive_list, | |
69dc4987 | 4925 | mm_list) |
31169714 CW |
4926 | cnt++; |
4927 | mutex_unlock(&dev->struct_mutex); | |
4928 | } | |
4929 | } | |
4930 | spin_unlock(&shrink_list_lock); | |
4931 | ||
4932 | return (cnt / 100) * sysctl_vfs_cache_pressure; | |
4933 | } | |
4934 | ||
4935 | spin_lock(&shrink_list_lock); | |
4936 | ||
1637ef41 | 4937 | rescan: |
31169714 CW |
4938 | /* first scan for clean buffers */ |
4939 | list_for_each_entry_safe(dev_priv, next_dev, | |
4940 | &shrink_list, mm.shrink_list) { | |
4941 | struct drm_device *dev = dev_priv->dev; | |
4942 | ||
4943 | if (! mutex_trylock(&dev->struct_mutex)) | |
4944 | continue; | |
4945 | ||
4946 | spin_unlock(&shrink_list_lock); | |
b09a1fec | 4947 | i915_gem_retire_requests(dev); |
31169714 CW |
4948 | |
4949 | list_for_each_entry_safe(obj_priv, next_obj, | |
4950 | &dev_priv->mm.inactive_list, | |
69dc4987 | 4951 | mm_list) { |
31169714 | 4952 | if (i915_gem_object_is_purgeable(obj_priv)) { |
a8089e84 | 4953 | i915_gem_object_unbind(&obj_priv->base); |
31169714 CW |
4954 | if (--nr_to_scan <= 0) |
4955 | break; | |
4956 | } | |
4957 | } | |
4958 | ||
4959 | spin_lock(&shrink_list_lock); | |
4960 | mutex_unlock(&dev->struct_mutex); | |
4961 | ||
963b4836 CW |
4962 | would_deadlock = 0; |
4963 | ||
31169714 CW |
4964 | if (nr_to_scan <= 0) |
4965 | break; | |
4966 | } | |
4967 | ||
4968 | /* second pass, evict/count anything still on the inactive list */ | |
4969 | list_for_each_entry_safe(dev_priv, next_dev, | |
4970 | &shrink_list, mm.shrink_list) { | |
4971 | struct drm_device *dev = dev_priv->dev; | |
4972 | ||
4973 | if (! mutex_trylock(&dev->struct_mutex)) | |
4974 | continue; | |
4975 | ||
4976 | spin_unlock(&shrink_list_lock); | |
4977 | ||
4978 | list_for_each_entry_safe(obj_priv, next_obj, | |
4979 | &dev_priv->mm.inactive_list, | |
69dc4987 | 4980 | mm_list) { |
31169714 | 4981 | if (nr_to_scan > 0) { |
a8089e84 | 4982 | i915_gem_object_unbind(&obj_priv->base); |
31169714 CW |
4983 | nr_to_scan--; |
4984 | } else | |
4985 | cnt++; | |
4986 | } | |
4987 | ||
4988 | spin_lock(&shrink_list_lock); | |
4989 | mutex_unlock(&dev->struct_mutex); | |
4990 | ||
4991 | would_deadlock = 0; | |
4992 | } | |
4993 | ||
1637ef41 CW |
4994 | if (nr_to_scan) { |
4995 | int active = 0; | |
4996 | ||
4997 | /* | |
4998 | * We are desperate for pages, so as a last resort, wait | |
4999 | * for the GPU to finish and discard whatever we can. | |
5000 | * This has a dramatic impact to reduce the number of | |
5001 | * OOM-killer events whilst running the GPU aggressively. | |
5002 | */ | |
5003 | list_for_each_entry(dev_priv, &shrink_list, mm.shrink_list) { | |
5004 | struct drm_device *dev = dev_priv->dev; | |
5005 | ||
5006 | if (!mutex_trylock(&dev->struct_mutex)) | |
5007 | continue; | |
5008 | ||
5009 | spin_unlock(&shrink_list_lock); | |
5010 | ||
5011 | if (i915_gpu_is_active(dev)) { | |
5012 | i915_gpu_idle(dev); | |
5013 | active++; | |
5014 | } | |
5015 | ||
5016 | spin_lock(&shrink_list_lock); | |
5017 | mutex_unlock(&dev->struct_mutex); | |
5018 | } | |
5019 | ||
5020 | if (active) | |
5021 | goto rescan; | |
5022 | } | |
5023 | ||
31169714 CW |
5024 | spin_unlock(&shrink_list_lock); |
5025 | ||
5026 | if (would_deadlock) | |
5027 | return -1; | |
5028 | else if (cnt > 0) | |
5029 | return (cnt / 100) * sysctl_vfs_cache_pressure; | |
5030 | else | |
5031 | return 0; | |
5032 | } | |
5033 | ||
5034 | static struct shrinker shrinker = { | |
5035 | .shrink = i915_gem_shrink, | |
5036 | .seeks = DEFAULT_SEEKS, | |
5037 | }; | |
5038 | ||
5039 | __init void | |
5040 | i915_gem_shrinker_init(void) | |
5041 | { | |
5042 | register_shrinker(&shrinker); | |
5043 | } | |
5044 | ||
5045 | __exit void | |
5046 | i915_gem_shrinker_exit(void) | |
5047 | { | |
5048 | unregister_shrinker(&shrinker); | |
5049 | } |