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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" | |
32 | #include <linux/swap.h> | |
33 | ||
28dfe52a EA |
34 | #define I915_GEM_GPU_DOMAINS (~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT)) |
35 | ||
c0d90829 KP |
36 | static void |
37 | i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj, | |
38 | uint32_t read_domains, | |
39 | uint32_t write_domain); | |
e47c68e9 EA |
40 | static void i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj); |
41 | static void i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj); | |
42 | static void i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj); | |
2ef7eeaa EA |
43 | static int i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj, |
44 | int write); | |
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); | |
673a394b EA |
51 | static int i915_gem_object_get_page_list(struct drm_gem_object *obj); |
52 | static void i915_gem_object_free_page_list(struct drm_gem_object *obj); | |
53 | static int i915_gem_object_wait_rendering(struct drm_gem_object *obj); | |
54 | ||
6dbe2772 KP |
55 | static void |
56 | i915_gem_cleanup_ringbuffer(struct drm_device *dev); | |
57 | ||
673a394b EA |
58 | int |
59 | i915_gem_init_ioctl(struct drm_device *dev, void *data, | |
60 | struct drm_file *file_priv) | |
61 | { | |
62 | drm_i915_private_t *dev_priv = dev->dev_private; | |
63 | struct drm_i915_gem_init *args = data; | |
64 | ||
65 | mutex_lock(&dev->struct_mutex); | |
66 | ||
67 | if (args->gtt_start >= args->gtt_end || | |
68 | (args->gtt_start & (PAGE_SIZE - 1)) != 0 || | |
69 | (args->gtt_end & (PAGE_SIZE - 1)) != 0) { | |
70 | mutex_unlock(&dev->struct_mutex); | |
71 | return -EINVAL; | |
72 | } | |
73 | ||
74 | drm_mm_init(&dev_priv->mm.gtt_space, args->gtt_start, | |
75 | args->gtt_end - args->gtt_start); | |
76 | ||
77 | dev->gtt_total = (uint32_t) (args->gtt_end - args->gtt_start); | |
78 | ||
79 | mutex_unlock(&dev->struct_mutex); | |
80 | ||
81 | return 0; | |
82 | } | |
83 | ||
5a125c3c EA |
84 | int |
85 | i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data, | |
86 | struct drm_file *file_priv) | |
87 | { | |
5a125c3c | 88 | struct drm_i915_gem_get_aperture *args = data; |
5a125c3c EA |
89 | |
90 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
91 | return -ENODEV; | |
92 | ||
93 | args->aper_size = dev->gtt_total; | |
2678d9d6 KP |
94 | args->aper_available_size = (args->aper_size - |
95 | atomic_read(&dev->pin_memory)); | |
5a125c3c EA |
96 | |
97 | return 0; | |
98 | } | |
99 | ||
673a394b EA |
100 | |
101 | /** | |
102 | * Creates a new mm object and returns a handle to it. | |
103 | */ | |
104 | int | |
105 | i915_gem_create_ioctl(struct drm_device *dev, void *data, | |
106 | struct drm_file *file_priv) | |
107 | { | |
108 | struct drm_i915_gem_create *args = data; | |
109 | struct drm_gem_object *obj; | |
110 | int handle, ret; | |
111 | ||
112 | args->size = roundup(args->size, PAGE_SIZE); | |
113 | ||
114 | /* Allocate the new object */ | |
115 | obj = drm_gem_object_alloc(dev, args->size); | |
116 | if (obj == NULL) | |
117 | return -ENOMEM; | |
118 | ||
119 | ret = drm_gem_handle_create(file_priv, obj, &handle); | |
120 | mutex_lock(&dev->struct_mutex); | |
121 | drm_gem_object_handle_unreference(obj); | |
122 | mutex_unlock(&dev->struct_mutex); | |
123 | ||
124 | if (ret) | |
125 | return ret; | |
126 | ||
127 | args->handle = handle; | |
128 | ||
129 | return 0; | |
130 | } | |
131 | ||
132 | /** | |
133 | * Reads data from the object referenced by handle. | |
134 | * | |
135 | * On error, the contents of *data are undefined. | |
136 | */ | |
137 | int | |
138 | i915_gem_pread_ioctl(struct drm_device *dev, void *data, | |
139 | struct drm_file *file_priv) | |
140 | { | |
141 | struct drm_i915_gem_pread *args = data; | |
142 | struct drm_gem_object *obj; | |
143 | struct drm_i915_gem_object *obj_priv; | |
144 | ssize_t read; | |
145 | loff_t offset; | |
146 | int ret; | |
147 | ||
148 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
149 | if (obj == NULL) | |
150 | return -EBADF; | |
151 | obj_priv = obj->driver_private; | |
152 | ||
153 | /* Bounds check source. | |
154 | * | |
155 | * XXX: This could use review for overflow issues... | |
156 | */ | |
157 | if (args->offset > obj->size || args->size > obj->size || | |
158 | args->offset + args->size > obj->size) { | |
159 | drm_gem_object_unreference(obj); | |
160 | return -EINVAL; | |
161 | } | |
162 | ||
163 | mutex_lock(&dev->struct_mutex); | |
164 | ||
e47c68e9 EA |
165 | ret = i915_gem_object_set_cpu_read_domain_range(obj, args->offset, |
166 | args->size); | |
673a394b EA |
167 | if (ret != 0) { |
168 | drm_gem_object_unreference(obj); | |
169 | mutex_unlock(&dev->struct_mutex); | |
e7d22bc3 | 170 | return ret; |
673a394b EA |
171 | } |
172 | ||
173 | offset = args->offset; | |
174 | ||
175 | read = vfs_read(obj->filp, (char __user *)(uintptr_t)args->data_ptr, | |
176 | args->size, &offset); | |
177 | if (read != args->size) { | |
178 | drm_gem_object_unreference(obj); | |
179 | mutex_unlock(&dev->struct_mutex); | |
180 | if (read < 0) | |
181 | return read; | |
182 | else | |
183 | return -EINVAL; | |
184 | } | |
185 | ||
186 | drm_gem_object_unreference(obj); | |
187 | mutex_unlock(&dev->struct_mutex); | |
188 | ||
189 | return 0; | |
190 | } | |
191 | ||
0839ccb8 KP |
192 | /* This is the fast write path which cannot handle |
193 | * page faults in the source data | |
9b7530cc | 194 | */ |
0839ccb8 KP |
195 | |
196 | static inline int | |
197 | fast_user_write(struct io_mapping *mapping, | |
198 | loff_t page_base, int page_offset, | |
199 | char __user *user_data, | |
200 | int length) | |
9b7530cc | 201 | { |
9b7530cc | 202 | char *vaddr_atomic; |
0839ccb8 | 203 | unsigned long unwritten; |
9b7530cc | 204 | |
0839ccb8 KP |
205 | vaddr_atomic = io_mapping_map_atomic_wc(mapping, page_base); |
206 | unwritten = __copy_from_user_inatomic_nocache(vaddr_atomic + page_offset, | |
207 | user_data, length); | |
208 | io_mapping_unmap_atomic(vaddr_atomic); | |
209 | if (unwritten) | |
210 | return -EFAULT; | |
211 | return 0; | |
212 | } | |
213 | ||
214 | /* Here's the write path which can sleep for | |
215 | * page faults | |
216 | */ | |
217 | ||
218 | static inline int | |
219 | slow_user_write(struct io_mapping *mapping, | |
220 | loff_t page_base, int page_offset, | |
221 | char __user *user_data, | |
222 | int length) | |
223 | { | |
224 | char __iomem *vaddr; | |
225 | unsigned long unwritten; | |
226 | ||
227 | vaddr = io_mapping_map_wc(mapping, page_base); | |
228 | if (vaddr == NULL) | |
229 | return -EFAULT; | |
230 | unwritten = __copy_from_user(vaddr + page_offset, | |
231 | user_data, length); | |
232 | io_mapping_unmap(vaddr); | |
233 | if (unwritten) | |
234 | return -EFAULT; | |
9b7530cc | 235 | return 0; |
9b7530cc LT |
236 | } |
237 | ||
673a394b EA |
238 | static int |
239 | i915_gem_gtt_pwrite(struct drm_device *dev, struct drm_gem_object *obj, | |
240 | struct drm_i915_gem_pwrite *args, | |
241 | struct drm_file *file_priv) | |
242 | { | |
243 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
0839ccb8 | 244 | drm_i915_private_t *dev_priv = dev->dev_private; |
673a394b | 245 | ssize_t remain; |
0839ccb8 | 246 | loff_t offset, page_base; |
673a394b | 247 | char __user *user_data; |
0839ccb8 KP |
248 | int page_offset, page_length; |
249 | int ret; | |
673a394b EA |
250 | |
251 | user_data = (char __user *) (uintptr_t) args->data_ptr; | |
252 | remain = args->size; | |
253 | if (!access_ok(VERIFY_READ, user_data, remain)) | |
254 | return -EFAULT; | |
255 | ||
256 | ||
257 | mutex_lock(&dev->struct_mutex); | |
258 | ret = i915_gem_object_pin(obj, 0); | |
259 | if (ret) { | |
260 | mutex_unlock(&dev->struct_mutex); | |
261 | return ret; | |
262 | } | |
2ef7eeaa | 263 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); |
673a394b EA |
264 | if (ret) |
265 | goto fail; | |
266 | ||
267 | obj_priv = obj->driver_private; | |
268 | offset = obj_priv->gtt_offset + args->offset; | |
269 | obj_priv->dirty = 1; | |
270 | ||
271 | while (remain > 0) { | |
272 | /* Operation in this page | |
273 | * | |
0839ccb8 KP |
274 | * page_base = page offset within aperture |
275 | * page_offset = offset within page | |
276 | * page_length = bytes to copy for this page | |
673a394b | 277 | */ |
0839ccb8 KP |
278 | page_base = (offset & ~(PAGE_SIZE-1)); |
279 | page_offset = offset & (PAGE_SIZE-1); | |
280 | page_length = remain; | |
281 | if ((page_offset + remain) > PAGE_SIZE) | |
282 | page_length = PAGE_SIZE - page_offset; | |
283 | ||
284 | ret = fast_user_write (dev_priv->mm.gtt_mapping, page_base, | |
285 | page_offset, user_data, page_length); | |
286 | ||
287 | /* If we get a fault while copying data, then (presumably) our | |
288 | * source page isn't available. In this case, use the | |
289 | * non-atomic function | |
290 | */ | |
291 | if (ret) { | |
292 | ret = slow_user_write (dev_priv->mm.gtt_mapping, | |
293 | page_base, page_offset, | |
294 | user_data, page_length); | |
295 | if (ret) | |
673a394b | 296 | goto fail; |
673a394b EA |
297 | } |
298 | ||
0839ccb8 KP |
299 | remain -= page_length; |
300 | user_data += page_length; | |
301 | offset += page_length; | |
673a394b | 302 | } |
673a394b EA |
303 | |
304 | fail: | |
305 | i915_gem_object_unpin(obj); | |
306 | mutex_unlock(&dev->struct_mutex); | |
307 | ||
308 | return ret; | |
309 | } | |
310 | ||
3043c60c | 311 | static int |
673a394b EA |
312 | i915_gem_shmem_pwrite(struct drm_device *dev, struct drm_gem_object *obj, |
313 | struct drm_i915_gem_pwrite *args, | |
314 | struct drm_file *file_priv) | |
315 | { | |
316 | int ret; | |
317 | loff_t offset; | |
318 | ssize_t written; | |
319 | ||
320 | mutex_lock(&dev->struct_mutex); | |
321 | ||
e47c68e9 | 322 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
673a394b EA |
323 | if (ret) { |
324 | mutex_unlock(&dev->struct_mutex); | |
325 | return ret; | |
326 | } | |
327 | ||
328 | offset = args->offset; | |
329 | ||
330 | written = vfs_write(obj->filp, | |
331 | (char __user *)(uintptr_t) args->data_ptr, | |
332 | args->size, &offset); | |
333 | if (written != args->size) { | |
334 | mutex_unlock(&dev->struct_mutex); | |
335 | if (written < 0) | |
336 | return written; | |
337 | else | |
338 | return -EINVAL; | |
339 | } | |
340 | ||
341 | mutex_unlock(&dev->struct_mutex); | |
342 | ||
343 | return 0; | |
344 | } | |
345 | ||
346 | /** | |
347 | * Writes data to the object referenced by handle. | |
348 | * | |
349 | * On error, the contents of the buffer that were to be modified are undefined. | |
350 | */ | |
351 | int | |
352 | i915_gem_pwrite_ioctl(struct drm_device *dev, void *data, | |
353 | struct drm_file *file_priv) | |
354 | { | |
355 | struct drm_i915_gem_pwrite *args = data; | |
356 | struct drm_gem_object *obj; | |
357 | struct drm_i915_gem_object *obj_priv; | |
358 | int ret = 0; | |
359 | ||
360 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
361 | if (obj == NULL) | |
362 | return -EBADF; | |
363 | obj_priv = obj->driver_private; | |
364 | ||
365 | /* Bounds check destination. | |
366 | * | |
367 | * XXX: This could use review for overflow issues... | |
368 | */ | |
369 | if (args->offset > obj->size || args->size > obj->size || | |
370 | args->offset + args->size > obj->size) { | |
371 | drm_gem_object_unreference(obj); | |
372 | return -EINVAL; | |
373 | } | |
374 | ||
375 | /* We can only do the GTT pwrite on untiled buffers, as otherwise | |
376 | * it would end up going through the fenced access, and we'll get | |
377 | * different detiling behavior between reading and writing. | |
378 | * pread/pwrite currently are reading and writing from the CPU | |
379 | * perspective, requiring manual detiling by the client. | |
380 | */ | |
381 | if (obj_priv->tiling_mode == I915_TILING_NONE && | |
382 | dev->gtt_total != 0) | |
383 | ret = i915_gem_gtt_pwrite(dev, obj, args, file_priv); | |
384 | else | |
385 | ret = i915_gem_shmem_pwrite(dev, obj, args, file_priv); | |
386 | ||
387 | #if WATCH_PWRITE | |
388 | if (ret) | |
389 | DRM_INFO("pwrite failed %d\n", ret); | |
390 | #endif | |
391 | ||
392 | drm_gem_object_unreference(obj); | |
393 | ||
394 | return ret; | |
395 | } | |
396 | ||
397 | /** | |
2ef7eeaa EA |
398 | * Called when user space prepares to use an object with the CPU, either |
399 | * through the mmap ioctl's mapping or a GTT mapping. | |
673a394b EA |
400 | */ |
401 | int | |
402 | i915_gem_set_domain_ioctl(struct drm_device *dev, void *data, | |
403 | struct drm_file *file_priv) | |
404 | { | |
405 | struct drm_i915_gem_set_domain *args = data; | |
406 | struct drm_gem_object *obj; | |
2ef7eeaa EA |
407 | uint32_t read_domains = args->read_domains; |
408 | uint32_t write_domain = args->write_domain; | |
673a394b EA |
409 | int ret; |
410 | ||
411 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
412 | return -ENODEV; | |
413 | ||
2ef7eeaa EA |
414 | /* Only handle setting domains to types used by the CPU. */ |
415 | if (write_domain & ~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT)) | |
416 | return -EINVAL; | |
417 | ||
418 | if (read_domains & ~(I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT)) | |
419 | return -EINVAL; | |
420 | ||
421 | /* Having something in the write domain implies it's in the read | |
422 | * domain, and only that read domain. Enforce that in the request. | |
423 | */ | |
424 | if (write_domain != 0 && read_domains != write_domain) | |
425 | return -EINVAL; | |
426 | ||
673a394b EA |
427 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); |
428 | if (obj == NULL) | |
429 | return -EBADF; | |
430 | ||
431 | mutex_lock(&dev->struct_mutex); | |
432 | #if WATCH_BUF | |
433 | DRM_INFO("set_domain_ioctl %p(%d), %08x %08x\n", | |
2ef7eeaa | 434 | obj, obj->size, read_domains, write_domain); |
673a394b | 435 | #endif |
2ef7eeaa EA |
436 | if (read_domains & I915_GEM_DOMAIN_GTT) { |
437 | ret = i915_gem_object_set_to_gtt_domain(obj, write_domain != 0); | |
02354392 EA |
438 | |
439 | /* Silently promote "you're not bound, there was nothing to do" | |
440 | * to success, since the client was just asking us to | |
441 | * make sure everything was done. | |
442 | */ | |
443 | if (ret == -EINVAL) | |
444 | ret = 0; | |
2ef7eeaa | 445 | } else { |
e47c68e9 | 446 | ret = i915_gem_object_set_to_cpu_domain(obj, write_domain != 0); |
2ef7eeaa EA |
447 | } |
448 | ||
673a394b EA |
449 | drm_gem_object_unreference(obj); |
450 | mutex_unlock(&dev->struct_mutex); | |
451 | return ret; | |
452 | } | |
453 | ||
454 | /** | |
455 | * Called when user space has done writes to this buffer | |
456 | */ | |
457 | int | |
458 | i915_gem_sw_finish_ioctl(struct drm_device *dev, void *data, | |
459 | struct drm_file *file_priv) | |
460 | { | |
461 | struct drm_i915_gem_sw_finish *args = data; | |
462 | struct drm_gem_object *obj; | |
463 | struct drm_i915_gem_object *obj_priv; | |
464 | int ret = 0; | |
465 | ||
466 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
467 | return -ENODEV; | |
468 | ||
469 | mutex_lock(&dev->struct_mutex); | |
470 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
471 | if (obj == NULL) { | |
472 | mutex_unlock(&dev->struct_mutex); | |
473 | return -EBADF; | |
474 | } | |
475 | ||
476 | #if WATCH_BUF | |
477 | DRM_INFO("%s: sw_finish %d (%p %d)\n", | |
478 | __func__, args->handle, obj, obj->size); | |
479 | #endif | |
480 | obj_priv = obj->driver_private; | |
481 | ||
482 | /* Pinned buffers may be scanout, so flush the cache */ | |
e47c68e9 EA |
483 | if (obj_priv->pin_count) |
484 | i915_gem_object_flush_cpu_write_domain(obj); | |
485 | ||
673a394b EA |
486 | drm_gem_object_unreference(obj); |
487 | mutex_unlock(&dev->struct_mutex); | |
488 | return ret; | |
489 | } | |
490 | ||
491 | /** | |
492 | * Maps the contents of an object, returning the address it is mapped | |
493 | * into. | |
494 | * | |
495 | * While the mapping holds a reference on the contents of the object, it doesn't | |
496 | * imply a ref on the object itself. | |
497 | */ | |
498 | int | |
499 | i915_gem_mmap_ioctl(struct drm_device *dev, void *data, | |
500 | struct drm_file *file_priv) | |
501 | { | |
502 | struct drm_i915_gem_mmap *args = data; | |
503 | struct drm_gem_object *obj; | |
504 | loff_t offset; | |
505 | unsigned long addr; | |
506 | ||
507 | if (!(dev->driver->driver_features & DRIVER_GEM)) | |
508 | return -ENODEV; | |
509 | ||
510 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
511 | if (obj == NULL) | |
512 | return -EBADF; | |
513 | ||
514 | offset = args->offset; | |
515 | ||
516 | down_write(¤t->mm->mmap_sem); | |
517 | addr = do_mmap(obj->filp, 0, args->size, | |
518 | PROT_READ | PROT_WRITE, MAP_SHARED, | |
519 | args->offset); | |
520 | up_write(¤t->mm->mmap_sem); | |
521 | mutex_lock(&dev->struct_mutex); | |
522 | drm_gem_object_unreference(obj); | |
523 | mutex_unlock(&dev->struct_mutex); | |
524 | if (IS_ERR((void *)addr)) | |
525 | return addr; | |
526 | ||
527 | args->addr_ptr = (uint64_t) addr; | |
528 | ||
529 | return 0; | |
530 | } | |
531 | ||
532 | static void | |
533 | i915_gem_object_free_page_list(struct drm_gem_object *obj) | |
534 | { | |
535 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
536 | int page_count = obj->size / PAGE_SIZE; | |
537 | int i; | |
538 | ||
539 | if (obj_priv->page_list == NULL) | |
540 | return; | |
541 | ||
542 | ||
543 | for (i = 0; i < page_count; i++) | |
544 | if (obj_priv->page_list[i] != NULL) { | |
545 | if (obj_priv->dirty) | |
546 | set_page_dirty(obj_priv->page_list[i]); | |
547 | mark_page_accessed(obj_priv->page_list[i]); | |
548 | page_cache_release(obj_priv->page_list[i]); | |
549 | } | |
550 | obj_priv->dirty = 0; | |
551 | ||
552 | drm_free(obj_priv->page_list, | |
553 | page_count * sizeof(struct page *), | |
554 | DRM_MEM_DRIVER); | |
555 | obj_priv->page_list = NULL; | |
556 | } | |
557 | ||
558 | static void | |
ce44b0ea | 559 | i915_gem_object_move_to_active(struct drm_gem_object *obj, uint32_t seqno) |
673a394b EA |
560 | { |
561 | struct drm_device *dev = obj->dev; | |
562 | drm_i915_private_t *dev_priv = dev->dev_private; | |
563 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
564 | ||
565 | /* Add a reference if we're newly entering the active list. */ | |
566 | if (!obj_priv->active) { | |
567 | drm_gem_object_reference(obj); | |
568 | obj_priv->active = 1; | |
569 | } | |
570 | /* Move from whatever list we were on to the tail of execution. */ | |
571 | list_move_tail(&obj_priv->list, | |
572 | &dev_priv->mm.active_list); | |
ce44b0ea | 573 | obj_priv->last_rendering_seqno = seqno; |
673a394b EA |
574 | } |
575 | ||
ce44b0ea EA |
576 | static void |
577 | i915_gem_object_move_to_flushing(struct drm_gem_object *obj) | |
578 | { | |
579 | struct drm_device *dev = obj->dev; | |
580 | drm_i915_private_t *dev_priv = dev->dev_private; | |
581 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
582 | ||
583 | BUG_ON(!obj_priv->active); | |
584 | list_move_tail(&obj_priv->list, &dev_priv->mm.flushing_list); | |
585 | obj_priv->last_rendering_seqno = 0; | |
586 | } | |
673a394b EA |
587 | |
588 | static void | |
589 | i915_gem_object_move_to_inactive(struct drm_gem_object *obj) | |
590 | { | |
591 | struct drm_device *dev = obj->dev; | |
592 | drm_i915_private_t *dev_priv = dev->dev_private; | |
593 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
594 | ||
595 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
596 | if (obj_priv->pin_count != 0) | |
597 | list_del_init(&obj_priv->list); | |
598 | else | |
599 | list_move_tail(&obj_priv->list, &dev_priv->mm.inactive_list); | |
600 | ||
ce44b0ea | 601 | obj_priv->last_rendering_seqno = 0; |
673a394b EA |
602 | if (obj_priv->active) { |
603 | obj_priv->active = 0; | |
604 | drm_gem_object_unreference(obj); | |
605 | } | |
606 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
607 | } | |
608 | ||
609 | /** | |
610 | * Creates a new sequence number, emitting a write of it to the status page | |
611 | * plus an interrupt, which will trigger i915_user_interrupt_handler. | |
612 | * | |
613 | * Must be called with struct_lock held. | |
614 | * | |
615 | * Returned sequence numbers are nonzero on success. | |
616 | */ | |
617 | static uint32_t | |
618 | i915_add_request(struct drm_device *dev, uint32_t flush_domains) | |
619 | { | |
620 | drm_i915_private_t *dev_priv = dev->dev_private; | |
621 | struct drm_i915_gem_request *request; | |
622 | uint32_t seqno; | |
623 | int was_empty; | |
624 | RING_LOCALS; | |
625 | ||
626 | request = drm_calloc(1, sizeof(*request), DRM_MEM_DRIVER); | |
627 | if (request == NULL) | |
628 | return 0; | |
629 | ||
630 | /* Grab the seqno we're going to make this request be, and bump the | |
631 | * next (skipping 0 so it can be the reserved no-seqno value). | |
632 | */ | |
633 | seqno = dev_priv->mm.next_gem_seqno; | |
634 | dev_priv->mm.next_gem_seqno++; | |
635 | if (dev_priv->mm.next_gem_seqno == 0) | |
636 | dev_priv->mm.next_gem_seqno++; | |
637 | ||
638 | BEGIN_LP_RING(4); | |
639 | OUT_RING(MI_STORE_DWORD_INDEX); | |
640 | OUT_RING(I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT); | |
641 | OUT_RING(seqno); | |
642 | ||
643 | OUT_RING(MI_USER_INTERRUPT); | |
644 | ADVANCE_LP_RING(); | |
645 | ||
646 | DRM_DEBUG("%d\n", seqno); | |
647 | ||
648 | request->seqno = seqno; | |
649 | request->emitted_jiffies = jiffies; | |
673a394b EA |
650 | was_empty = list_empty(&dev_priv->mm.request_list); |
651 | list_add_tail(&request->list, &dev_priv->mm.request_list); | |
652 | ||
ce44b0ea EA |
653 | /* Associate any objects on the flushing list matching the write |
654 | * domain we're flushing with our flush. | |
655 | */ | |
656 | if (flush_domains != 0) { | |
657 | struct drm_i915_gem_object *obj_priv, *next; | |
658 | ||
659 | list_for_each_entry_safe(obj_priv, next, | |
660 | &dev_priv->mm.flushing_list, list) { | |
661 | struct drm_gem_object *obj = obj_priv->obj; | |
662 | ||
663 | if ((obj->write_domain & flush_domains) == | |
664 | obj->write_domain) { | |
665 | obj->write_domain = 0; | |
666 | i915_gem_object_move_to_active(obj, seqno); | |
667 | } | |
668 | } | |
669 | ||
670 | } | |
671 | ||
6dbe2772 | 672 | if (was_empty && !dev_priv->mm.suspended) |
673a394b EA |
673 | schedule_delayed_work(&dev_priv->mm.retire_work, HZ); |
674 | return seqno; | |
675 | } | |
676 | ||
677 | /** | |
678 | * Command execution barrier | |
679 | * | |
680 | * Ensures that all commands in the ring are finished | |
681 | * before signalling the CPU | |
682 | */ | |
3043c60c | 683 | static uint32_t |
673a394b EA |
684 | i915_retire_commands(struct drm_device *dev) |
685 | { | |
686 | drm_i915_private_t *dev_priv = dev->dev_private; | |
687 | uint32_t cmd = MI_FLUSH | MI_NO_WRITE_FLUSH; | |
688 | uint32_t flush_domains = 0; | |
689 | RING_LOCALS; | |
690 | ||
691 | /* The sampler always gets flushed on i965 (sigh) */ | |
692 | if (IS_I965G(dev)) | |
693 | flush_domains |= I915_GEM_DOMAIN_SAMPLER; | |
694 | BEGIN_LP_RING(2); | |
695 | OUT_RING(cmd); | |
696 | OUT_RING(0); /* noop */ | |
697 | ADVANCE_LP_RING(); | |
698 | return flush_domains; | |
699 | } | |
700 | ||
701 | /** | |
702 | * Moves buffers associated only with the given active seqno from the active | |
703 | * to inactive list, potentially freeing them. | |
704 | */ | |
705 | static void | |
706 | i915_gem_retire_request(struct drm_device *dev, | |
707 | struct drm_i915_gem_request *request) | |
708 | { | |
709 | drm_i915_private_t *dev_priv = dev->dev_private; | |
710 | ||
711 | /* Move any buffers on the active list that are no longer referenced | |
712 | * by the ringbuffer to the flushing/inactive lists as appropriate. | |
713 | */ | |
714 | while (!list_empty(&dev_priv->mm.active_list)) { | |
715 | struct drm_gem_object *obj; | |
716 | struct drm_i915_gem_object *obj_priv; | |
717 | ||
718 | obj_priv = list_first_entry(&dev_priv->mm.active_list, | |
719 | struct drm_i915_gem_object, | |
720 | list); | |
721 | obj = obj_priv->obj; | |
722 | ||
723 | /* If the seqno being retired doesn't match the oldest in the | |
724 | * list, then the oldest in the list must still be newer than | |
725 | * this seqno. | |
726 | */ | |
727 | if (obj_priv->last_rendering_seqno != request->seqno) | |
728 | return; | |
729 | #if WATCH_LRU | |
730 | DRM_INFO("%s: retire %d moves to inactive list %p\n", | |
731 | __func__, request->seqno, obj); | |
732 | #endif | |
733 | ||
ce44b0ea EA |
734 | if (obj->write_domain != 0) |
735 | i915_gem_object_move_to_flushing(obj); | |
736 | else | |
673a394b | 737 | i915_gem_object_move_to_inactive(obj); |
673a394b EA |
738 | } |
739 | } | |
740 | ||
741 | /** | |
742 | * Returns true if seq1 is later than seq2. | |
743 | */ | |
744 | static int | |
745 | i915_seqno_passed(uint32_t seq1, uint32_t seq2) | |
746 | { | |
747 | return (int32_t)(seq1 - seq2) >= 0; | |
748 | } | |
749 | ||
750 | uint32_t | |
751 | i915_get_gem_seqno(struct drm_device *dev) | |
752 | { | |
753 | drm_i915_private_t *dev_priv = dev->dev_private; | |
754 | ||
755 | return READ_HWSP(dev_priv, I915_GEM_HWS_INDEX); | |
756 | } | |
757 | ||
758 | /** | |
759 | * This function clears the request list as sequence numbers are passed. | |
760 | */ | |
761 | void | |
762 | i915_gem_retire_requests(struct drm_device *dev) | |
763 | { | |
764 | drm_i915_private_t *dev_priv = dev->dev_private; | |
765 | uint32_t seqno; | |
766 | ||
767 | seqno = i915_get_gem_seqno(dev); | |
768 | ||
769 | while (!list_empty(&dev_priv->mm.request_list)) { | |
770 | struct drm_i915_gem_request *request; | |
771 | uint32_t retiring_seqno; | |
772 | ||
773 | request = list_first_entry(&dev_priv->mm.request_list, | |
774 | struct drm_i915_gem_request, | |
775 | list); | |
776 | retiring_seqno = request->seqno; | |
777 | ||
778 | if (i915_seqno_passed(seqno, retiring_seqno) || | |
779 | dev_priv->mm.wedged) { | |
780 | i915_gem_retire_request(dev, request); | |
781 | ||
782 | list_del(&request->list); | |
783 | drm_free(request, sizeof(*request), DRM_MEM_DRIVER); | |
784 | } else | |
785 | break; | |
786 | } | |
787 | } | |
788 | ||
789 | void | |
790 | i915_gem_retire_work_handler(struct work_struct *work) | |
791 | { | |
792 | drm_i915_private_t *dev_priv; | |
793 | struct drm_device *dev; | |
794 | ||
795 | dev_priv = container_of(work, drm_i915_private_t, | |
796 | mm.retire_work.work); | |
797 | dev = dev_priv->dev; | |
798 | ||
799 | mutex_lock(&dev->struct_mutex); | |
800 | i915_gem_retire_requests(dev); | |
6dbe2772 KP |
801 | if (!dev_priv->mm.suspended && |
802 | !list_empty(&dev_priv->mm.request_list)) | |
673a394b EA |
803 | schedule_delayed_work(&dev_priv->mm.retire_work, HZ); |
804 | mutex_unlock(&dev->struct_mutex); | |
805 | } | |
806 | ||
807 | /** | |
808 | * Waits for a sequence number to be signaled, and cleans up the | |
809 | * request and object lists appropriately for that event. | |
810 | */ | |
3043c60c | 811 | static int |
673a394b EA |
812 | i915_wait_request(struct drm_device *dev, uint32_t seqno) |
813 | { | |
814 | drm_i915_private_t *dev_priv = dev->dev_private; | |
815 | int ret = 0; | |
816 | ||
817 | BUG_ON(seqno == 0); | |
818 | ||
819 | if (!i915_seqno_passed(i915_get_gem_seqno(dev), seqno)) { | |
820 | dev_priv->mm.waiting_gem_seqno = seqno; | |
821 | i915_user_irq_get(dev); | |
822 | ret = wait_event_interruptible(dev_priv->irq_queue, | |
823 | i915_seqno_passed(i915_get_gem_seqno(dev), | |
824 | seqno) || | |
825 | dev_priv->mm.wedged); | |
826 | i915_user_irq_put(dev); | |
827 | dev_priv->mm.waiting_gem_seqno = 0; | |
828 | } | |
829 | if (dev_priv->mm.wedged) | |
830 | ret = -EIO; | |
831 | ||
832 | if (ret && ret != -ERESTARTSYS) | |
833 | DRM_ERROR("%s returns %d (awaiting %d at %d)\n", | |
834 | __func__, ret, seqno, i915_get_gem_seqno(dev)); | |
835 | ||
836 | /* Directly dispatch request retiring. While we have the work queue | |
837 | * to handle this, the waiter on a request often wants an associated | |
838 | * buffer to have made it to the inactive list, and we would need | |
839 | * a separate wait queue to handle that. | |
840 | */ | |
841 | if (ret == 0) | |
842 | i915_gem_retire_requests(dev); | |
843 | ||
844 | return ret; | |
845 | } | |
846 | ||
847 | static void | |
848 | i915_gem_flush(struct drm_device *dev, | |
849 | uint32_t invalidate_domains, | |
850 | uint32_t flush_domains) | |
851 | { | |
852 | drm_i915_private_t *dev_priv = dev->dev_private; | |
853 | uint32_t cmd; | |
854 | RING_LOCALS; | |
855 | ||
856 | #if WATCH_EXEC | |
857 | DRM_INFO("%s: invalidate %08x flush %08x\n", __func__, | |
858 | invalidate_domains, flush_domains); | |
859 | #endif | |
860 | ||
861 | if (flush_domains & I915_GEM_DOMAIN_CPU) | |
862 | drm_agp_chipset_flush(dev); | |
863 | ||
864 | if ((invalidate_domains | flush_domains) & ~(I915_GEM_DOMAIN_CPU | | |
865 | I915_GEM_DOMAIN_GTT)) { | |
866 | /* | |
867 | * read/write caches: | |
868 | * | |
869 | * I915_GEM_DOMAIN_RENDER is always invalidated, but is | |
870 | * only flushed if MI_NO_WRITE_FLUSH is unset. On 965, it is | |
871 | * also flushed at 2d versus 3d pipeline switches. | |
872 | * | |
873 | * read-only caches: | |
874 | * | |
875 | * I915_GEM_DOMAIN_SAMPLER is flushed on pre-965 if | |
876 | * MI_READ_FLUSH is set, and is always flushed on 965. | |
877 | * | |
878 | * I915_GEM_DOMAIN_COMMAND may not exist? | |
879 | * | |
880 | * I915_GEM_DOMAIN_INSTRUCTION, which exists on 965, is | |
881 | * invalidated when MI_EXE_FLUSH is set. | |
882 | * | |
883 | * I915_GEM_DOMAIN_VERTEX, which exists on 965, is | |
884 | * invalidated with every MI_FLUSH. | |
885 | * | |
886 | * TLBs: | |
887 | * | |
888 | * On 965, TLBs associated with I915_GEM_DOMAIN_COMMAND | |
889 | * and I915_GEM_DOMAIN_CPU in are invalidated at PTE write and | |
890 | * I915_GEM_DOMAIN_RENDER and I915_GEM_DOMAIN_SAMPLER | |
891 | * are flushed at any MI_FLUSH. | |
892 | */ | |
893 | ||
894 | cmd = MI_FLUSH | MI_NO_WRITE_FLUSH; | |
895 | if ((invalidate_domains|flush_domains) & | |
896 | I915_GEM_DOMAIN_RENDER) | |
897 | cmd &= ~MI_NO_WRITE_FLUSH; | |
898 | if (!IS_I965G(dev)) { | |
899 | /* | |
900 | * On the 965, the sampler cache always gets flushed | |
901 | * and this bit is reserved. | |
902 | */ | |
903 | if (invalidate_domains & I915_GEM_DOMAIN_SAMPLER) | |
904 | cmd |= MI_READ_FLUSH; | |
905 | } | |
906 | if (invalidate_domains & I915_GEM_DOMAIN_INSTRUCTION) | |
907 | cmd |= MI_EXE_FLUSH; | |
908 | ||
909 | #if WATCH_EXEC | |
910 | DRM_INFO("%s: queue flush %08x to ring\n", __func__, cmd); | |
911 | #endif | |
912 | BEGIN_LP_RING(2); | |
913 | OUT_RING(cmd); | |
914 | OUT_RING(0); /* noop */ | |
915 | ADVANCE_LP_RING(); | |
916 | } | |
917 | } | |
918 | ||
919 | /** | |
920 | * Ensures that all rendering to the object has completed and the object is | |
921 | * safe to unbind from the GTT or access from the CPU. | |
922 | */ | |
923 | static int | |
924 | i915_gem_object_wait_rendering(struct drm_gem_object *obj) | |
925 | { | |
926 | struct drm_device *dev = obj->dev; | |
927 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
928 | int ret; | |
929 | ||
e47c68e9 EA |
930 | /* This function only exists to support waiting for existing rendering, |
931 | * not for emitting required flushes. | |
673a394b | 932 | */ |
e47c68e9 | 933 | BUG_ON((obj->write_domain & I915_GEM_GPU_DOMAINS) != 0); |
673a394b EA |
934 | |
935 | /* If there is rendering queued on the buffer being evicted, wait for | |
936 | * it. | |
937 | */ | |
938 | if (obj_priv->active) { | |
939 | #if WATCH_BUF | |
940 | DRM_INFO("%s: object %p wait for seqno %08x\n", | |
941 | __func__, obj, obj_priv->last_rendering_seqno); | |
942 | #endif | |
943 | ret = i915_wait_request(dev, obj_priv->last_rendering_seqno); | |
944 | if (ret != 0) | |
945 | return ret; | |
946 | } | |
947 | ||
948 | return 0; | |
949 | } | |
950 | ||
951 | /** | |
952 | * Unbinds an object from the GTT aperture. | |
953 | */ | |
954 | static int | |
955 | i915_gem_object_unbind(struct drm_gem_object *obj) | |
956 | { | |
957 | struct drm_device *dev = obj->dev; | |
958 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
959 | int ret = 0; | |
960 | ||
961 | #if WATCH_BUF | |
962 | DRM_INFO("%s:%d %p\n", __func__, __LINE__, obj); | |
963 | DRM_INFO("gtt_space %p\n", obj_priv->gtt_space); | |
964 | #endif | |
965 | if (obj_priv->gtt_space == NULL) | |
966 | return 0; | |
967 | ||
968 | if (obj_priv->pin_count != 0) { | |
969 | DRM_ERROR("Attempting to unbind pinned buffer\n"); | |
970 | return -EINVAL; | |
971 | } | |
972 | ||
673a394b EA |
973 | /* Move the object to the CPU domain to ensure that |
974 | * any possible CPU writes while it's not in the GTT | |
975 | * are flushed when we go to remap it. This will | |
976 | * also ensure that all pending GPU writes are finished | |
977 | * before we unbind. | |
978 | */ | |
e47c68e9 | 979 | ret = i915_gem_object_set_to_cpu_domain(obj, 1); |
673a394b | 980 | if (ret) { |
e47c68e9 EA |
981 | if (ret != -ERESTARTSYS) |
982 | DRM_ERROR("set_domain failed: %d\n", ret); | |
673a394b EA |
983 | return ret; |
984 | } | |
985 | ||
986 | if (obj_priv->agp_mem != NULL) { | |
987 | drm_unbind_agp(obj_priv->agp_mem); | |
988 | drm_free_agp(obj_priv->agp_mem, obj->size / PAGE_SIZE); | |
989 | obj_priv->agp_mem = NULL; | |
990 | } | |
991 | ||
992 | BUG_ON(obj_priv->active); | |
993 | ||
994 | i915_gem_object_free_page_list(obj); | |
995 | ||
996 | if (obj_priv->gtt_space) { | |
997 | atomic_dec(&dev->gtt_count); | |
998 | atomic_sub(obj->size, &dev->gtt_memory); | |
999 | ||
1000 | drm_mm_put_block(obj_priv->gtt_space); | |
1001 | obj_priv->gtt_space = NULL; | |
1002 | } | |
1003 | ||
1004 | /* Remove ourselves from the LRU list if present. */ | |
1005 | if (!list_empty(&obj_priv->list)) | |
1006 | list_del_init(&obj_priv->list); | |
1007 | ||
1008 | return 0; | |
1009 | } | |
1010 | ||
1011 | static int | |
1012 | i915_gem_evict_something(struct drm_device *dev) | |
1013 | { | |
1014 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1015 | struct drm_gem_object *obj; | |
1016 | struct drm_i915_gem_object *obj_priv; | |
1017 | int ret = 0; | |
1018 | ||
1019 | for (;;) { | |
1020 | /* If there's an inactive buffer available now, grab it | |
1021 | * and be done. | |
1022 | */ | |
1023 | if (!list_empty(&dev_priv->mm.inactive_list)) { | |
1024 | obj_priv = list_first_entry(&dev_priv->mm.inactive_list, | |
1025 | struct drm_i915_gem_object, | |
1026 | list); | |
1027 | obj = obj_priv->obj; | |
1028 | BUG_ON(obj_priv->pin_count != 0); | |
1029 | #if WATCH_LRU | |
1030 | DRM_INFO("%s: evicting %p\n", __func__, obj); | |
1031 | #endif | |
1032 | BUG_ON(obj_priv->active); | |
1033 | ||
1034 | /* Wait on the rendering and unbind the buffer. */ | |
1035 | ret = i915_gem_object_unbind(obj); | |
1036 | break; | |
1037 | } | |
1038 | ||
1039 | /* If we didn't get anything, but the ring is still processing | |
1040 | * things, wait for one of those things to finish and hopefully | |
1041 | * leave us a buffer to evict. | |
1042 | */ | |
1043 | if (!list_empty(&dev_priv->mm.request_list)) { | |
1044 | struct drm_i915_gem_request *request; | |
1045 | ||
1046 | request = list_first_entry(&dev_priv->mm.request_list, | |
1047 | struct drm_i915_gem_request, | |
1048 | list); | |
1049 | ||
1050 | ret = i915_wait_request(dev, request->seqno); | |
1051 | if (ret) | |
1052 | break; | |
1053 | ||
1054 | /* if waiting caused an object to become inactive, | |
1055 | * then loop around and wait for it. Otherwise, we | |
1056 | * assume that waiting freed and unbound something, | |
1057 | * so there should now be some space in the GTT | |
1058 | */ | |
1059 | if (!list_empty(&dev_priv->mm.inactive_list)) | |
1060 | continue; | |
1061 | break; | |
1062 | } | |
1063 | ||
1064 | /* If we didn't have anything on the request list but there | |
1065 | * are buffers awaiting a flush, emit one and try again. | |
1066 | * When we wait on it, those buffers waiting for that flush | |
1067 | * will get moved to inactive. | |
1068 | */ | |
1069 | if (!list_empty(&dev_priv->mm.flushing_list)) { | |
1070 | obj_priv = list_first_entry(&dev_priv->mm.flushing_list, | |
1071 | struct drm_i915_gem_object, | |
1072 | list); | |
1073 | obj = obj_priv->obj; | |
1074 | ||
1075 | i915_gem_flush(dev, | |
1076 | obj->write_domain, | |
1077 | obj->write_domain); | |
1078 | i915_add_request(dev, obj->write_domain); | |
1079 | ||
1080 | obj = NULL; | |
1081 | continue; | |
1082 | } | |
1083 | ||
1084 | DRM_ERROR("inactive empty %d request empty %d " | |
1085 | "flushing empty %d\n", | |
1086 | list_empty(&dev_priv->mm.inactive_list), | |
1087 | list_empty(&dev_priv->mm.request_list), | |
1088 | list_empty(&dev_priv->mm.flushing_list)); | |
1089 | /* If we didn't do any of the above, there's nothing to be done | |
1090 | * and we just can't fit it in. | |
1091 | */ | |
1092 | return -ENOMEM; | |
1093 | } | |
1094 | return ret; | |
1095 | } | |
1096 | ||
ac94a962 KP |
1097 | static int |
1098 | i915_gem_evict_everything(struct drm_device *dev) | |
1099 | { | |
1100 | int ret; | |
1101 | ||
1102 | for (;;) { | |
1103 | ret = i915_gem_evict_something(dev); | |
1104 | if (ret != 0) | |
1105 | break; | |
1106 | } | |
1107 | return ret; | |
1108 | } | |
1109 | ||
673a394b EA |
1110 | static int |
1111 | i915_gem_object_get_page_list(struct drm_gem_object *obj) | |
1112 | { | |
1113 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
1114 | int page_count, i; | |
1115 | struct address_space *mapping; | |
1116 | struct inode *inode; | |
1117 | struct page *page; | |
1118 | int ret; | |
1119 | ||
1120 | if (obj_priv->page_list) | |
1121 | return 0; | |
1122 | ||
1123 | /* Get the list of pages out of our struct file. They'll be pinned | |
1124 | * at this point until we release them. | |
1125 | */ | |
1126 | page_count = obj->size / PAGE_SIZE; | |
1127 | BUG_ON(obj_priv->page_list != NULL); | |
1128 | obj_priv->page_list = drm_calloc(page_count, sizeof(struct page *), | |
1129 | DRM_MEM_DRIVER); | |
1130 | if (obj_priv->page_list == NULL) { | |
1131 | DRM_ERROR("Faled to allocate page list\n"); | |
1132 | return -ENOMEM; | |
1133 | } | |
1134 | ||
1135 | inode = obj->filp->f_path.dentry->d_inode; | |
1136 | mapping = inode->i_mapping; | |
1137 | for (i = 0; i < page_count; i++) { | |
1138 | page = read_mapping_page(mapping, i, NULL); | |
1139 | if (IS_ERR(page)) { | |
1140 | ret = PTR_ERR(page); | |
1141 | DRM_ERROR("read_mapping_page failed: %d\n", ret); | |
1142 | i915_gem_object_free_page_list(obj); | |
1143 | return ret; | |
1144 | } | |
1145 | obj_priv->page_list[i] = page; | |
1146 | } | |
1147 | return 0; | |
1148 | } | |
1149 | ||
1150 | /** | |
1151 | * Finds free space in the GTT aperture and binds the object there. | |
1152 | */ | |
1153 | static int | |
1154 | i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment) | |
1155 | { | |
1156 | struct drm_device *dev = obj->dev; | |
1157 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1158 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
1159 | struct drm_mm_node *free_space; | |
1160 | int page_count, ret; | |
1161 | ||
1162 | if (alignment == 0) | |
1163 | alignment = PAGE_SIZE; | |
1164 | if (alignment & (PAGE_SIZE - 1)) { | |
1165 | DRM_ERROR("Invalid object alignment requested %u\n", alignment); | |
1166 | return -EINVAL; | |
1167 | } | |
1168 | ||
1169 | search_free: | |
1170 | free_space = drm_mm_search_free(&dev_priv->mm.gtt_space, | |
1171 | obj->size, alignment, 0); | |
1172 | if (free_space != NULL) { | |
1173 | obj_priv->gtt_space = drm_mm_get_block(free_space, obj->size, | |
1174 | alignment); | |
1175 | if (obj_priv->gtt_space != NULL) { | |
1176 | obj_priv->gtt_space->private = obj; | |
1177 | obj_priv->gtt_offset = obj_priv->gtt_space->start; | |
1178 | } | |
1179 | } | |
1180 | if (obj_priv->gtt_space == NULL) { | |
1181 | /* If the gtt is empty and we're still having trouble | |
1182 | * fitting our object in, we're out of memory. | |
1183 | */ | |
1184 | #if WATCH_LRU | |
1185 | DRM_INFO("%s: GTT full, evicting something\n", __func__); | |
1186 | #endif | |
1187 | if (list_empty(&dev_priv->mm.inactive_list) && | |
1188 | list_empty(&dev_priv->mm.flushing_list) && | |
1189 | list_empty(&dev_priv->mm.active_list)) { | |
1190 | DRM_ERROR("GTT full, but LRU list empty\n"); | |
1191 | return -ENOMEM; | |
1192 | } | |
1193 | ||
1194 | ret = i915_gem_evict_something(dev); | |
1195 | if (ret != 0) { | |
ac94a962 KP |
1196 | if (ret != -ERESTARTSYS) |
1197 | DRM_ERROR("Failed to evict a buffer %d\n", ret); | |
673a394b EA |
1198 | return ret; |
1199 | } | |
1200 | goto search_free; | |
1201 | } | |
1202 | ||
1203 | #if WATCH_BUF | |
1204 | DRM_INFO("Binding object of size %d at 0x%08x\n", | |
1205 | obj->size, obj_priv->gtt_offset); | |
1206 | #endif | |
1207 | ret = i915_gem_object_get_page_list(obj); | |
1208 | if (ret) { | |
1209 | drm_mm_put_block(obj_priv->gtt_space); | |
1210 | obj_priv->gtt_space = NULL; | |
1211 | return ret; | |
1212 | } | |
1213 | ||
1214 | page_count = obj->size / PAGE_SIZE; | |
1215 | /* Create an AGP memory structure pointing at our pages, and bind it | |
1216 | * into the GTT. | |
1217 | */ | |
1218 | obj_priv->agp_mem = drm_agp_bind_pages(dev, | |
1219 | obj_priv->page_list, | |
1220 | page_count, | |
ba1eb1d8 KP |
1221 | obj_priv->gtt_offset, |
1222 | obj_priv->agp_type); | |
673a394b EA |
1223 | if (obj_priv->agp_mem == NULL) { |
1224 | i915_gem_object_free_page_list(obj); | |
1225 | drm_mm_put_block(obj_priv->gtt_space); | |
1226 | obj_priv->gtt_space = NULL; | |
1227 | return -ENOMEM; | |
1228 | } | |
1229 | atomic_inc(&dev->gtt_count); | |
1230 | atomic_add(obj->size, &dev->gtt_memory); | |
1231 | ||
1232 | /* Assert that the object is not currently in any GPU domain. As it | |
1233 | * wasn't in the GTT, there shouldn't be any way it could have been in | |
1234 | * a GPU cache | |
1235 | */ | |
1236 | BUG_ON(obj->read_domains & ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT)); | |
1237 | BUG_ON(obj->write_domain & ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT)); | |
1238 | ||
1239 | return 0; | |
1240 | } | |
1241 | ||
1242 | void | |
1243 | i915_gem_clflush_object(struct drm_gem_object *obj) | |
1244 | { | |
1245 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
1246 | ||
1247 | /* If we don't have a page list set up, then we're not pinned | |
1248 | * to GPU, and we can ignore the cache flush because it'll happen | |
1249 | * again at bind time. | |
1250 | */ | |
1251 | if (obj_priv->page_list == NULL) | |
1252 | return; | |
1253 | ||
1254 | drm_clflush_pages(obj_priv->page_list, obj->size / PAGE_SIZE); | |
1255 | } | |
1256 | ||
e47c68e9 EA |
1257 | /** Flushes any GPU write domain for the object if it's dirty. */ |
1258 | static void | |
1259 | i915_gem_object_flush_gpu_write_domain(struct drm_gem_object *obj) | |
1260 | { | |
1261 | struct drm_device *dev = obj->dev; | |
1262 | uint32_t seqno; | |
1263 | ||
1264 | if ((obj->write_domain & I915_GEM_GPU_DOMAINS) == 0) | |
1265 | return; | |
1266 | ||
1267 | /* Queue the GPU write cache flushing we need. */ | |
1268 | i915_gem_flush(dev, 0, obj->write_domain); | |
1269 | seqno = i915_add_request(dev, obj->write_domain); | |
1270 | obj->write_domain = 0; | |
1271 | i915_gem_object_move_to_active(obj, seqno); | |
1272 | } | |
1273 | ||
1274 | /** Flushes the GTT write domain for the object if it's dirty. */ | |
1275 | static void | |
1276 | i915_gem_object_flush_gtt_write_domain(struct drm_gem_object *obj) | |
1277 | { | |
1278 | if (obj->write_domain != I915_GEM_DOMAIN_GTT) | |
1279 | return; | |
1280 | ||
1281 | /* No actual flushing is required for the GTT write domain. Writes | |
1282 | * to it immediately go to main memory as far as we know, so there's | |
1283 | * no chipset flush. It also doesn't land in render cache. | |
1284 | */ | |
1285 | obj->write_domain = 0; | |
1286 | } | |
1287 | ||
1288 | /** Flushes the CPU write domain for the object if it's dirty. */ | |
1289 | static void | |
1290 | i915_gem_object_flush_cpu_write_domain(struct drm_gem_object *obj) | |
1291 | { | |
1292 | struct drm_device *dev = obj->dev; | |
1293 | ||
1294 | if (obj->write_domain != I915_GEM_DOMAIN_CPU) | |
1295 | return; | |
1296 | ||
1297 | i915_gem_clflush_object(obj); | |
1298 | drm_agp_chipset_flush(dev); | |
1299 | obj->write_domain = 0; | |
1300 | } | |
1301 | ||
2ef7eeaa EA |
1302 | /** |
1303 | * Moves a single object to the GTT read, and possibly write domain. | |
1304 | * | |
1305 | * This function returns when the move is complete, including waiting on | |
1306 | * flushes to occur. | |
1307 | */ | |
1308 | static int | |
1309 | i915_gem_object_set_to_gtt_domain(struct drm_gem_object *obj, int write) | |
1310 | { | |
2ef7eeaa | 1311 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
e47c68e9 | 1312 | int ret; |
2ef7eeaa | 1313 | |
02354392 EA |
1314 | /* Not valid to be called on unbound objects. */ |
1315 | if (obj_priv->gtt_space == NULL) | |
1316 | return -EINVAL; | |
1317 | ||
e47c68e9 EA |
1318 | i915_gem_object_flush_gpu_write_domain(obj); |
1319 | /* Wait on any GPU rendering and flushing to occur. */ | |
1320 | ret = i915_gem_object_wait_rendering(obj); | |
1321 | if (ret != 0) | |
1322 | return ret; | |
1323 | ||
1324 | /* If we're writing through the GTT domain, then CPU and GPU caches | |
1325 | * will need to be invalidated at next use. | |
2ef7eeaa | 1326 | */ |
e47c68e9 EA |
1327 | if (write) |
1328 | obj->read_domains &= I915_GEM_DOMAIN_GTT; | |
2ef7eeaa | 1329 | |
e47c68e9 | 1330 | i915_gem_object_flush_cpu_write_domain(obj); |
2ef7eeaa | 1331 | |
e47c68e9 EA |
1332 | /* It should now be out of any other write domains, and we can update |
1333 | * the domain values for our changes. | |
1334 | */ | |
1335 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_GTT) != 0); | |
1336 | obj->read_domains |= I915_GEM_DOMAIN_GTT; | |
1337 | if (write) { | |
1338 | obj->write_domain = I915_GEM_DOMAIN_GTT; | |
1339 | obj_priv->dirty = 1; | |
2ef7eeaa EA |
1340 | } |
1341 | ||
e47c68e9 EA |
1342 | return 0; |
1343 | } | |
1344 | ||
1345 | /** | |
1346 | * Moves a single object to the CPU read, and possibly write domain. | |
1347 | * | |
1348 | * This function returns when the move is complete, including waiting on | |
1349 | * flushes to occur. | |
1350 | */ | |
1351 | static int | |
1352 | i915_gem_object_set_to_cpu_domain(struct drm_gem_object *obj, int write) | |
1353 | { | |
1354 | struct drm_device *dev = obj->dev; | |
1355 | int ret; | |
1356 | ||
1357 | i915_gem_object_flush_gpu_write_domain(obj); | |
2ef7eeaa | 1358 | /* Wait on any GPU rendering and flushing to occur. */ |
e47c68e9 EA |
1359 | ret = i915_gem_object_wait_rendering(obj); |
1360 | if (ret != 0) | |
1361 | return ret; | |
2ef7eeaa | 1362 | |
e47c68e9 | 1363 | i915_gem_object_flush_gtt_write_domain(obj); |
2ef7eeaa | 1364 | |
e47c68e9 EA |
1365 | /* If we have a partially-valid cache of the object in the CPU, |
1366 | * finish invalidating it and free the per-page flags. | |
2ef7eeaa | 1367 | */ |
e47c68e9 | 1368 | i915_gem_object_set_to_full_cpu_read_domain(obj); |
2ef7eeaa | 1369 | |
e47c68e9 EA |
1370 | /* Flush the CPU cache if it's still invalid. */ |
1371 | if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) { | |
2ef7eeaa EA |
1372 | i915_gem_clflush_object(obj); |
1373 | drm_agp_chipset_flush(dev); | |
1374 | ||
e47c68e9 | 1375 | obj->read_domains |= I915_GEM_DOMAIN_CPU; |
2ef7eeaa EA |
1376 | } |
1377 | ||
1378 | /* It should now be out of any other write domains, and we can update | |
1379 | * the domain values for our changes. | |
1380 | */ | |
e47c68e9 EA |
1381 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0); |
1382 | ||
1383 | /* If we're writing through the CPU, then the GPU read domains will | |
1384 | * need to be invalidated at next use. | |
1385 | */ | |
1386 | if (write) { | |
1387 | obj->read_domains &= I915_GEM_DOMAIN_CPU; | |
1388 | obj->write_domain = I915_GEM_DOMAIN_CPU; | |
1389 | } | |
2ef7eeaa EA |
1390 | |
1391 | return 0; | |
1392 | } | |
1393 | ||
673a394b EA |
1394 | /* |
1395 | * Set the next domain for the specified object. This | |
1396 | * may not actually perform the necessary flushing/invaliding though, | |
1397 | * as that may want to be batched with other set_domain operations | |
1398 | * | |
1399 | * This is (we hope) the only really tricky part of gem. The goal | |
1400 | * is fairly simple -- track which caches hold bits of the object | |
1401 | * and make sure they remain coherent. A few concrete examples may | |
1402 | * help to explain how it works. For shorthand, we use the notation | |
1403 | * (read_domains, write_domain), e.g. (CPU, CPU) to indicate the | |
1404 | * a pair of read and write domain masks. | |
1405 | * | |
1406 | * Case 1: the batch buffer | |
1407 | * | |
1408 | * 1. Allocated | |
1409 | * 2. Written by CPU | |
1410 | * 3. Mapped to GTT | |
1411 | * 4. Read by GPU | |
1412 | * 5. Unmapped from GTT | |
1413 | * 6. Freed | |
1414 | * | |
1415 | * Let's take these a step at a time | |
1416 | * | |
1417 | * 1. Allocated | |
1418 | * Pages allocated from the kernel may still have | |
1419 | * cache contents, so we set them to (CPU, CPU) always. | |
1420 | * 2. Written by CPU (using pwrite) | |
1421 | * The pwrite function calls set_domain (CPU, CPU) and | |
1422 | * this function does nothing (as nothing changes) | |
1423 | * 3. Mapped by GTT | |
1424 | * This function asserts that the object is not | |
1425 | * currently in any GPU-based read or write domains | |
1426 | * 4. Read by GPU | |
1427 | * i915_gem_execbuffer calls set_domain (COMMAND, 0). | |
1428 | * As write_domain is zero, this function adds in the | |
1429 | * current read domains (CPU+COMMAND, 0). | |
1430 | * flush_domains is set to CPU. | |
1431 | * invalidate_domains is set to COMMAND | |
1432 | * clflush is run to get data out of the CPU caches | |
1433 | * then i915_dev_set_domain calls i915_gem_flush to | |
1434 | * emit an MI_FLUSH and drm_agp_chipset_flush | |
1435 | * 5. Unmapped from GTT | |
1436 | * i915_gem_object_unbind calls set_domain (CPU, CPU) | |
1437 | * flush_domains and invalidate_domains end up both zero | |
1438 | * so no flushing/invalidating happens | |
1439 | * 6. Freed | |
1440 | * yay, done | |
1441 | * | |
1442 | * Case 2: The shared render buffer | |
1443 | * | |
1444 | * 1. Allocated | |
1445 | * 2. Mapped to GTT | |
1446 | * 3. Read/written by GPU | |
1447 | * 4. set_domain to (CPU,CPU) | |
1448 | * 5. Read/written by CPU | |
1449 | * 6. Read/written by GPU | |
1450 | * | |
1451 | * 1. Allocated | |
1452 | * Same as last example, (CPU, CPU) | |
1453 | * 2. Mapped to GTT | |
1454 | * Nothing changes (assertions find that it is not in the GPU) | |
1455 | * 3. Read/written by GPU | |
1456 | * execbuffer calls set_domain (RENDER, RENDER) | |
1457 | * flush_domains gets CPU | |
1458 | * invalidate_domains gets GPU | |
1459 | * clflush (obj) | |
1460 | * MI_FLUSH and drm_agp_chipset_flush | |
1461 | * 4. set_domain (CPU, CPU) | |
1462 | * flush_domains gets GPU | |
1463 | * invalidate_domains gets CPU | |
1464 | * wait_rendering (obj) to make sure all drawing is complete. | |
1465 | * This will include an MI_FLUSH to get the data from GPU | |
1466 | * to memory | |
1467 | * clflush (obj) to invalidate the CPU cache | |
1468 | * Another MI_FLUSH in i915_gem_flush (eliminate this somehow?) | |
1469 | * 5. Read/written by CPU | |
1470 | * cache lines are loaded and dirtied | |
1471 | * 6. Read written by GPU | |
1472 | * Same as last GPU access | |
1473 | * | |
1474 | * Case 3: The constant buffer | |
1475 | * | |
1476 | * 1. Allocated | |
1477 | * 2. Written by CPU | |
1478 | * 3. Read by GPU | |
1479 | * 4. Updated (written) by CPU again | |
1480 | * 5. Read by GPU | |
1481 | * | |
1482 | * 1. Allocated | |
1483 | * (CPU, CPU) | |
1484 | * 2. Written by CPU | |
1485 | * (CPU, CPU) | |
1486 | * 3. Read by GPU | |
1487 | * (CPU+RENDER, 0) | |
1488 | * flush_domains = CPU | |
1489 | * invalidate_domains = RENDER | |
1490 | * clflush (obj) | |
1491 | * MI_FLUSH | |
1492 | * drm_agp_chipset_flush | |
1493 | * 4. Updated (written) by CPU again | |
1494 | * (CPU, CPU) | |
1495 | * flush_domains = 0 (no previous write domain) | |
1496 | * invalidate_domains = 0 (no new read domains) | |
1497 | * 5. Read by GPU | |
1498 | * (CPU+RENDER, 0) | |
1499 | * flush_domains = CPU | |
1500 | * invalidate_domains = RENDER | |
1501 | * clflush (obj) | |
1502 | * MI_FLUSH | |
1503 | * drm_agp_chipset_flush | |
1504 | */ | |
c0d90829 KP |
1505 | static void |
1506 | i915_gem_object_set_to_gpu_domain(struct drm_gem_object *obj, | |
1507 | uint32_t read_domains, | |
1508 | uint32_t write_domain) | |
673a394b EA |
1509 | { |
1510 | struct drm_device *dev = obj->dev; | |
1511 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
1512 | uint32_t invalidate_domains = 0; | |
1513 | uint32_t flush_domains = 0; | |
e47c68e9 EA |
1514 | |
1515 | BUG_ON(read_domains & I915_GEM_DOMAIN_CPU); | |
1516 | BUG_ON(write_domain == I915_GEM_DOMAIN_CPU); | |
673a394b EA |
1517 | |
1518 | #if WATCH_BUF | |
1519 | DRM_INFO("%s: object %p read %08x -> %08x write %08x -> %08x\n", | |
1520 | __func__, obj, | |
1521 | obj->read_domains, read_domains, | |
1522 | obj->write_domain, write_domain); | |
1523 | #endif | |
1524 | /* | |
1525 | * If the object isn't moving to a new write domain, | |
1526 | * let the object stay in multiple read domains | |
1527 | */ | |
1528 | if (write_domain == 0) | |
1529 | read_domains |= obj->read_domains; | |
1530 | else | |
1531 | obj_priv->dirty = 1; | |
1532 | ||
1533 | /* | |
1534 | * Flush the current write domain if | |
1535 | * the new read domains don't match. Invalidate | |
1536 | * any read domains which differ from the old | |
1537 | * write domain | |
1538 | */ | |
1539 | if (obj->write_domain && obj->write_domain != read_domains) { | |
1540 | flush_domains |= obj->write_domain; | |
1541 | invalidate_domains |= read_domains & ~obj->write_domain; | |
1542 | } | |
1543 | /* | |
1544 | * Invalidate any read caches which may have | |
1545 | * stale data. That is, any new read domains. | |
1546 | */ | |
1547 | invalidate_domains |= read_domains & ~obj->read_domains; | |
1548 | if ((flush_domains | invalidate_domains) & I915_GEM_DOMAIN_CPU) { | |
1549 | #if WATCH_BUF | |
1550 | DRM_INFO("%s: CPU domain flush %08x invalidate %08x\n", | |
1551 | __func__, flush_domains, invalidate_domains); | |
1552 | #endif | |
673a394b EA |
1553 | i915_gem_clflush_object(obj); |
1554 | } | |
1555 | ||
1556 | if ((write_domain | flush_domains) != 0) | |
1557 | obj->write_domain = write_domain; | |
673a394b EA |
1558 | obj->read_domains = read_domains; |
1559 | ||
1560 | dev->invalidate_domains |= invalidate_domains; | |
1561 | dev->flush_domains |= flush_domains; | |
1562 | #if WATCH_BUF | |
1563 | DRM_INFO("%s: read %08x write %08x invalidate %08x flush %08x\n", | |
1564 | __func__, | |
1565 | obj->read_domains, obj->write_domain, | |
1566 | dev->invalidate_domains, dev->flush_domains); | |
1567 | #endif | |
673a394b EA |
1568 | } |
1569 | ||
1570 | /** | |
e47c68e9 | 1571 | * Moves the object from a partially CPU read to a full one. |
673a394b | 1572 | * |
e47c68e9 EA |
1573 | * Note that this only resolves i915_gem_object_set_cpu_read_domain_range(), |
1574 | * and doesn't handle transitioning from !(read_domains & I915_GEM_DOMAIN_CPU). | |
673a394b | 1575 | */ |
e47c68e9 EA |
1576 | static void |
1577 | i915_gem_object_set_to_full_cpu_read_domain(struct drm_gem_object *obj) | |
673a394b | 1578 | { |
e47c68e9 | 1579 | struct drm_device *dev = obj->dev; |
673a394b | 1580 | struct drm_i915_gem_object *obj_priv = obj->driver_private; |
673a394b | 1581 | |
e47c68e9 EA |
1582 | if (!obj_priv->page_cpu_valid) |
1583 | return; | |
1584 | ||
1585 | /* If we're partially in the CPU read domain, finish moving it in. | |
1586 | */ | |
1587 | if (obj->read_domains & I915_GEM_DOMAIN_CPU) { | |
1588 | int i; | |
1589 | ||
1590 | for (i = 0; i <= (obj->size - 1) / PAGE_SIZE; i++) { | |
1591 | if (obj_priv->page_cpu_valid[i]) | |
1592 | continue; | |
1593 | drm_clflush_pages(obj_priv->page_list + i, 1); | |
1594 | } | |
1595 | drm_agp_chipset_flush(dev); | |
1596 | } | |
1597 | ||
1598 | /* Free the page_cpu_valid mappings which are now stale, whether | |
1599 | * or not we've got I915_GEM_DOMAIN_CPU. | |
1600 | */ | |
1601 | drm_free(obj_priv->page_cpu_valid, obj->size / PAGE_SIZE, | |
1602 | DRM_MEM_DRIVER); | |
1603 | obj_priv->page_cpu_valid = NULL; | |
1604 | } | |
1605 | ||
1606 | /** | |
1607 | * Set the CPU read domain on a range of the object. | |
1608 | * | |
1609 | * The object ends up with I915_GEM_DOMAIN_CPU in its read flags although it's | |
1610 | * not entirely valid. The page_cpu_valid member of the object flags which | |
1611 | * pages have been flushed, and will be respected by | |
1612 | * i915_gem_object_set_to_cpu_domain() if it's called on to get a valid mapping | |
1613 | * of the whole object. | |
1614 | * | |
1615 | * This function returns when the move is complete, including waiting on | |
1616 | * flushes to occur. | |
1617 | */ | |
1618 | static int | |
1619 | i915_gem_object_set_cpu_read_domain_range(struct drm_gem_object *obj, | |
1620 | uint64_t offset, uint64_t size) | |
1621 | { | |
1622 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
1623 | int i, ret; | |
673a394b | 1624 | |
e47c68e9 EA |
1625 | if (offset == 0 && size == obj->size) |
1626 | return i915_gem_object_set_to_cpu_domain(obj, 0); | |
673a394b | 1627 | |
e47c68e9 EA |
1628 | i915_gem_object_flush_gpu_write_domain(obj); |
1629 | /* Wait on any GPU rendering and flushing to occur. */ | |
6a47baa6 | 1630 | ret = i915_gem_object_wait_rendering(obj); |
e47c68e9 | 1631 | if (ret != 0) |
6a47baa6 | 1632 | return ret; |
e47c68e9 EA |
1633 | i915_gem_object_flush_gtt_write_domain(obj); |
1634 | ||
1635 | /* If we're already fully in the CPU read domain, we're done. */ | |
1636 | if (obj_priv->page_cpu_valid == NULL && | |
1637 | (obj->read_domains & I915_GEM_DOMAIN_CPU) != 0) | |
1638 | return 0; | |
673a394b | 1639 | |
e47c68e9 EA |
1640 | /* Otherwise, create/clear the per-page CPU read domain flag if we're |
1641 | * newly adding I915_GEM_DOMAIN_CPU | |
1642 | */ | |
673a394b EA |
1643 | if (obj_priv->page_cpu_valid == NULL) { |
1644 | obj_priv->page_cpu_valid = drm_calloc(1, obj->size / PAGE_SIZE, | |
1645 | DRM_MEM_DRIVER); | |
e47c68e9 EA |
1646 | if (obj_priv->page_cpu_valid == NULL) |
1647 | return -ENOMEM; | |
1648 | } else if ((obj->read_domains & I915_GEM_DOMAIN_CPU) == 0) | |
1649 | memset(obj_priv->page_cpu_valid, 0, obj->size / PAGE_SIZE); | |
673a394b EA |
1650 | |
1651 | /* Flush the cache on any pages that are still invalid from the CPU's | |
1652 | * perspective. | |
1653 | */ | |
e47c68e9 EA |
1654 | for (i = offset / PAGE_SIZE; i <= (offset + size - 1) / PAGE_SIZE; |
1655 | i++) { | |
673a394b EA |
1656 | if (obj_priv->page_cpu_valid[i]) |
1657 | continue; | |
1658 | ||
1659 | drm_clflush_pages(obj_priv->page_list + i, 1); | |
1660 | ||
1661 | obj_priv->page_cpu_valid[i] = 1; | |
1662 | } | |
1663 | ||
e47c68e9 EA |
1664 | /* It should now be out of any other write domains, and we can update |
1665 | * the domain values for our changes. | |
1666 | */ | |
1667 | BUG_ON((obj->write_domain & ~I915_GEM_DOMAIN_CPU) != 0); | |
1668 | ||
1669 | obj->read_domains |= I915_GEM_DOMAIN_CPU; | |
1670 | ||
673a394b EA |
1671 | return 0; |
1672 | } | |
1673 | ||
673a394b EA |
1674 | /** |
1675 | * Pin an object to the GTT and evaluate the relocations landing in it. | |
1676 | */ | |
1677 | static int | |
1678 | i915_gem_object_pin_and_relocate(struct drm_gem_object *obj, | |
1679 | struct drm_file *file_priv, | |
1680 | struct drm_i915_gem_exec_object *entry) | |
1681 | { | |
1682 | struct drm_device *dev = obj->dev; | |
0839ccb8 | 1683 | drm_i915_private_t *dev_priv = dev->dev_private; |
673a394b EA |
1684 | struct drm_i915_gem_relocation_entry reloc; |
1685 | struct drm_i915_gem_relocation_entry __user *relocs; | |
1686 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
1687 | int i, ret; | |
0839ccb8 | 1688 | void __iomem *reloc_page; |
673a394b EA |
1689 | |
1690 | /* Choose the GTT offset for our buffer and put it there. */ | |
1691 | ret = i915_gem_object_pin(obj, (uint32_t) entry->alignment); | |
1692 | if (ret) | |
1693 | return ret; | |
1694 | ||
1695 | entry->offset = obj_priv->gtt_offset; | |
1696 | ||
1697 | relocs = (struct drm_i915_gem_relocation_entry __user *) | |
1698 | (uintptr_t) entry->relocs_ptr; | |
1699 | /* Apply the relocations, using the GTT aperture to avoid cache | |
1700 | * flushing requirements. | |
1701 | */ | |
1702 | for (i = 0; i < entry->relocation_count; i++) { | |
1703 | struct drm_gem_object *target_obj; | |
1704 | struct drm_i915_gem_object *target_obj_priv; | |
3043c60c EA |
1705 | uint32_t reloc_val, reloc_offset; |
1706 | uint32_t __iomem *reloc_entry; | |
673a394b EA |
1707 | |
1708 | ret = copy_from_user(&reloc, relocs + i, sizeof(reloc)); | |
1709 | if (ret != 0) { | |
1710 | i915_gem_object_unpin(obj); | |
1711 | return ret; | |
1712 | } | |
1713 | ||
1714 | target_obj = drm_gem_object_lookup(obj->dev, file_priv, | |
1715 | reloc.target_handle); | |
1716 | if (target_obj == NULL) { | |
1717 | i915_gem_object_unpin(obj); | |
1718 | return -EBADF; | |
1719 | } | |
1720 | target_obj_priv = target_obj->driver_private; | |
1721 | ||
1722 | /* The target buffer should have appeared before us in the | |
1723 | * exec_object list, so it should have a GTT space bound by now. | |
1724 | */ | |
1725 | if (target_obj_priv->gtt_space == NULL) { | |
1726 | DRM_ERROR("No GTT space found for object %d\n", | |
1727 | reloc.target_handle); | |
1728 | drm_gem_object_unreference(target_obj); | |
1729 | i915_gem_object_unpin(obj); | |
1730 | return -EINVAL; | |
1731 | } | |
1732 | ||
1733 | if (reloc.offset > obj->size - 4) { | |
1734 | DRM_ERROR("Relocation beyond object bounds: " | |
1735 | "obj %p target %d offset %d size %d.\n", | |
1736 | obj, reloc.target_handle, | |
1737 | (int) reloc.offset, (int) obj->size); | |
1738 | drm_gem_object_unreference(target_obj); | |
1739 | i915_gem_object_unpin(obj); | |
1740 | return -EINVAL; | |
1741 | } | |
1742 | if (reloc.offset & 3) { | |
1743 | DRM_ERROR("Relocation not 4-byte aligned: " | |
1744 | "obj %p target %d offset %d.\n", | |
1745 | obj, reloc.target_handle, | |
1746 | (int) reloc.offset); | |
1747 | drm_gem_object_unreference(target_obj); | |
1748 | i915_gem_object_unpin(obj); | |
1749 | return -EINVAL; | |
1750 | } | |
1751 | ||
e47c68e9 EA |
1752 | if (reloc.write_domain & I915_GEM_DOMAIN_CPU || |
1753 | reloc.read_domains & I915_GEM_DOMAIN_CPU) { | |
1754 | DRM_ERROR("reloc with read/write CPU domains: " | |
1755 | "obj %p target %d offset %d " | |
1756 | "read %08x write %08x", | |
1757 | obj, reloc.target_handle, | |
1758 | (int) reloc.offset, | |
1759 | reloc.read_domains, | |
1760 | reloc.write_domain); | |
1761 | return -EINVAL; | |
1762 | } | |
1763 | ||
673a394b EA |
1764 | if (reloc.write_domain && target_obj->pending_write_domain && |
1765 | reloc.write_domain != target_obj->pending_write_domain) { | |
1766 | DRM_ERROR("Write domain conflict: " | |
1767 | "obj %p target %d offset %d " | |
1768 | "new %08x old %08x\n", | |
1769 | obj, reloc.target_handle, | |
1770 | (int) reloc.offset, | |
1771 | reloc.write_domain, | |
1772 | target_obj->pending_write_domain); | |
1773 | drm_gem_object_unreference(target_obj); | |
1774 | i915_gem_object_unpin(obj); | |
1775 | return -EINVAL; | |
1776 | } | |
1777 | ||
1778 | #if WATCH_RELOC | |
1779 | DRM_INFO("%s: obj %p offset %08x target %d " | |
1780 | "read %08x write %08x gtt %08x " | |
1781 | "presumed %08x delta %08x\n", | |
1782 | __func__, | |
1783 | obj, | |
1784 | (int) reloc.offset, | |
1785 | (int) reloc.target_handle, | |
1786 | (int) reloc.read_domains, | |
1787 | (int) reloc.write_domain, | |
1788 | (int) target_obj_priv->gtt_offset, | |
1789 | (int) reloc.presumed_offset, | |
1790 | reloc.delta); | |
1791 | #endif | |
1792 | ||
1793 | target_obj->pending_read_domains |= reloc.read_domains; | |
1794 | target_obj->pending_write_domain |= reloc.write_domain; | |
1795 | ||
1796 | /* If the relocation already has the right value in it, no | |
1797 | * more work needs to be done. | |
1798 | */ | |
1799 | if (target_obj_priv->gtt_offset == reloc.presumed_offset) { | |
1800 | drm_gem_object_unreference(target_obj); | |
1801 | continue; | |
1802 | } | |
1803 | ||
2ef7eeaa EA |
1804 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); |
1805 | if (ret != 0) { | |
1806 | drm_gem_object_unreference(target_obj); | |
1807 | i915_gem_object_unpin(obj); | |
1808 | return -EINVAL; | |
673a394b EA |
1809 | } |
1810 | ||
1811 | /* Map the page containing the relocation we're going to | |
1812 | * perform. | |
1813 | */ | |
1814 | reloc_offset = obj_priv->gtt_offset + reloc.offset; | |
0839ccb8 KP |
1815 | reloc_page = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping, |
1816 | (reloc_offset & | |
1817 | ~(PAGE_SIZE - 1))); | |
3043c60c | 1818 | reloc_entry = (uint32_t __iomem *)(reloc_page + |
0839ccb8 | 1819 | (reloc_offset & (PAGE_SIZE - 1))); |
673a394b EA |
1820 | reloc_val = target_obj_priv->gtt_offset + reloc.delta; |
1821 | ||
1822 | #if WATCH_BUF | |
1823 | DRM_INFO("Applied relocation: %p@0x%08x %08x -> %08x\n", | |
1824 | obj, (unsigned int) reloc.offset, | |
1825 | readl(reloc_entry), reloc_val); | |
1826 | #endif | |
1827 | writel(reloc_val, reloc_entry); | |
0839ccb8 | 1828 | io_mapping_unmap_atomic(reloc_page); |
673a394b EA |
1829 | |
1830 | /* Write the updated presumed offset for this entry back out | |
1831 | * to the user. | |
1832 | */ | |
1833 | reloc.presumed_offset = target_obj_priv->gtt_offset; | |
1834 | ret = copy_to_user(relocs + i, &reloc, sizeof(reloc)); | |
1835 | if (ret != 0) { | |
1836 | drm_gem_object_unreference(target_obj); | |
1837 | i915_gem_object_unpin(obj); | |
1838 | return ret; | |
1839 | } | |
1840 | ||
1841 | drm_gem_object_unreference(target_obj); | |
1842 | } | |
1843 | ||
673a394b EA |
1844 | #if WATCH_BUF |
1845 | if (0) | |
1846 | i915_gem_dump_object(obj, 128, __func__, ~0); | |
1847 | #endif | |
1848 | return 0; | |
1849 | } | |
1850 | ||
1851 | /** Dispatch a batchbuffer to the ring | |
1852 | */ | |
1853 | static int | |
1854 | i915_dispatch_gem_execbuffer(struct drm_device *dev, | |
1855 | struct drm_i915_gem_execbuffer *exec, | |
1856 | uint64_t exec_offset) | |
1857 | { | |
1858 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1859 | struct drm_clip_rect __user *boxes = (struct drm_clip_rect __user *) | |
1860 | (uintptr_t) exec->cliprects_ptr; | |
1861 | int nbox = exec->num_cliprects; | |
1862 | int i = 0, count; | |
1863 | uint32_t exec_start, exec_len; | |
1864 | RING_LOCALS; | |
1865 | ||
1866 | exec_start = (uint32_t) exec_offset + exec->batch_start_offset; | |
1867 | exec_len = (uint32_t) exec->batch_len; | |
1868 | ||
1869 | if ((exec_start | exec_len) & 0x7) { | |
1870 | DRM_ERROR("alignment\n"); | |
1871 | return -EINVAL; | |
1872 | } | |
1873 | ||
1874 | if (!exec_start) | |
1875 | return -EINVAL; | |
1876 | ||
1877 | count = nbox ? nbox : 1; | |
1878 | ||
1879 | for (i = 0; i < count; i++) { | |
1880 | if (i < nbox) { | |
1881 | int ret = i915_emit_box(dev, boxes, i, | |
1882 | exec->DR1, exec->DR4); | |
1883 | if (ret) | |
1884 | return ret; | |
1885 | } | |
1886 | ||
1887 | if (IS_I830(dev) || IS_845G(dev)) { | |
1888 | BEGIN_LP_RING(4); | |
1889 | OUT_RING(MI_BATCH_BUFFER); | |
1890 | OUT_RING(exec_start | MI_BATCH_NON_SECURE); | |
1891 | OUT_RING(exec_start + exec_len - 4); | |
1892 | OUT_RING(0); | |
1893 | ADVANCE_LP_RING(); | |
1894 | } else { | |
1895 | BEGIN_LP_RING(2); | |
1896 | if (IS_I965G(dev)) { | |
1897 | OUT_RING(MI_BATCH_BUFFER_START | | |
1898 | (2 << 6) | | |
1899 | MI_BATCH_NON_SECURE_I965); | |
1900 | OUT_RING(exec_start); | |
1901 | } else { | |
1902 | OUT_RING(MI_BATCH_BUFFER_START | | |
1903 | (2 << 6)); | |
1904 | OUT_RING(exec_start | MI_BATCH_NON_SECURE); | |
1905 | } | |
1906 | ADVANCE_LP_RING(); | |
1907 | } | |
1908 | } | |
1909 | ||
1910 | /* XXX breadcrumb */ | |
1911 | return 0; | |
1912 | } | |
1913 | ||
1914 | /* Throttle our rendering by waiting until the ring has completed our requests | |
1915 | * emitted over 20 msec ago. | |
1916 | * | |
1917 | * This should get us reasonable parallelism between CPU and GPU but also | |
1918 | * relatively low latency when blocking on a particular request to finish. | |
1919 | */ | |
1920 | static int | |
1921 | i915_gem_ring_throttle(struct drm_device *dev, struct drm_file *file_priv) | |
1922 | { | |
1923 | struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; | |
1924 | int ret = 0; | |
1925 | uint32_t seqno; | |
1926 | ||
1927 | mutex_lock(&dev->struct_mutex); | |
1928 | seqno = i915_file_priv->mm.last_gem_throttle_seqno; | |
1929 | i915_file_priv->mm.last_gem_throttle_seqno = | |
1930 | i915_file_priv->mm.last_gem_seqno; | |
1931 | if (seqno) | |
1932 | ret = i915_wait_request(dev, seqno); | |
1933 | mutex_unlock(&dev->struct_mutex); | |
1934 | return ret; | |
1935 | } | |
1936 | ||
1937 | int | |
1938 | i915_gem_execbuffer(struct drm_device *dev, void *data, | |
1939 | struct drm_file *file_priv) | |
1940 | { | |
1941 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1942 | struct drm_i915_file_private *i915_file_priv = file_priv->driver_priv; | |
1943 | struct drm_i915_gem_execbuffer *args = data; | |
1944 | struct drm_i915_gem_exec_object *exec_list = NULL; | |
1945 | struct drm_gem_object **object_list = NULL; | |
1946 | struct drm_gem_object *batch_obj; | |
1947 | int ret, i, pinned = 0; | |
1948 | uint64_t exec_offset; | |
1949 | uint32_t seqno, flush_domains; | |
ac94a962 | 1950 | int pin_tries; |
673a394b EA |
1951 | |
1952 | #if WATCH_EXEC | |
1953 | DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n", | |
1954 | (int) args->buffers_ptr, args->buffer_count, args->batch_len); | |
1955 | #endif | |
1956 | ||
4f481ed2 EA |
1957 | if (args->buffer_count < 1) { |
1958 | DRM_ERROR("execbuf with %d buffers\n", args->buffer_count); | |
1959 | return -EINVAL; | |
1960 | } | |
673a394b EA |
1961 | /* Copy in the exec list from userland */ |
1962 | exec_list = drm_calloc(sizeof(*exec_list), args->buffer_count, | |
1963 | DRM_MEM_DRIVER); | |
1964 | object_list = drm_calloc(sizeof(*object_list), args->buffer_count, | |
1965 | DRM_MEM_DRIVER); | |
1966 | if (exec_list == NULL || object_list == NULL) { | |
1967 | DRM_ERROR("Failed to allocate exec or object list " | |
1968 | "for %d buffers\n", | |
1969 | args->buffer_count); | |
1970 | ret = -ENOMEM; | |
1971 | goto pre_mutex_err; | |
1972 | } | |
1973 | ret = copy_from_user(exec_list, | |
1974 | (struct drm_i915_relocation_entry __user *) | |
1975 | (uintptr_t) args->buffers_ptr, | |
1976 | sizeof(*exec_list) * args->buffer_count); | |
1977 | if (ret != 0) { | |
1978 | DRM_ERROR("copy %d exec entries failed %d\n", | |
1979 | args->buffer_count, ret); | |
1980 | goto pre_mutex_err; | |
1981 | } | |
1982 | ||
1983 | mutex_lock(&dev->struct_mutex); | |
1984 | ||
1985 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
1986 | ||
1987 | if (dev_priv->mm.wedged) { | |
1988 | DRM_ERROR("Execbuf while wedged\n"); | |
1989 | mutex_unlock(&dev->struct_mutex); | |
1990 | return -EIO; | |
1991 | } | |
1992 | ||
1993 | if (dev_priv->mm.suspended) { | |
1994 | DRM_ERROR("Execbuf while VT-switched.\n"); | |
1995 | mutex_unlock(&dev->struct_mutex); | |
1996 | return -EBUSY; | |
1997 | } | |
1998 | ||
ac94a962 | 1999 | /* Look up object handles */ |
673a394b EA |
2000 | for (i = 0; i < args->buffer_count; i++) { |
2001 | object_list[i] = drm_gem_object_lookup(dev, file_priv, | |
2002 | exec_list[i].handle); | |
2003 | if (object_list[i] == NULL) { | |
2004 | DRM_ERROR("Invalid object handle %d at index %d\n", | |
2005 | exec_list[i].handle, i); | |
2006 | ret = -EBADF; | |
2007 | goto err; | |
2008 | } | |
ac94a962 | 2009 | } |
673a394b | 2010 | |
ac94a962 KP |
2011 | /* Pin and relocate */ |
2012 | for (pin_tries = 0; ; pin_tries++) { | |
2013 | ret = 0; | |
2014 | for (i = 0; i < args->buffer_count; i++) { | |
2015 | object_list[i]->pending_read_domains = 0; | |
2016 | object_list[i]->pending_write_domain = 0; | |
2017 | ret = i915_gem_object_pin_and_relocate(object_list[i], | |
2018 | file_priv, | |
2019 | &exec_list[i]); | |
2020 | if (ret) | |
2021 | break; | |
2022 | pinned = i + 1; | |
2023 | } | |
2024 | /* success */ | |
2025 | if (ret == 0) | |
2026 | break; | |
2027 | ||
2028 | /* error other than GTT full, or we've already tried again */ | |
2029 | if (ret != -ENOMEM || pin_tries >= 1) { | |
2030 | DRM_ERROR("Failed to pin buffers %d\n", ret); | |
673a394b EA |
2031 | goto err; |
2032 | } | |
ac94a962 KP |
2033 | |
2034 | /* unpin all of our buffers */ | |
2035 | for (i = 0; i < pinned; i++) | |
2036 | i915_gem_object_unpin(object_list[i]); | |
2037 | ||
2038 | /* evict everyone we can from the aperture */ | |
2039 | ret = i915_gem_evict_everything(dev); | |
2040 | if (ret) | |
2041 | goto err; | |
673a394b EA |
2042 | } |
2043 | ||
2044 | /* Set the pending read domains for the batch buffer to COMMAND */ | |
2045 | batch_obj = object_list[args->buffer_count-1]; | |
2046 | batch_obj->pending_read_domains = I915_GEM_DOMAIN_COMMAND; | |
2047 | batch_obj->pending_write_domain = 0; | |
2048 | ||
2049 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
2050 | ||
646f0f6e KP |
2051 | /* Zero the global flush/invalidate flags. These |
2052 | * will be modified as new domains are computed | |
2053 | * for each object | |
2054 | */ | |
2055 | dev->invalidate_domains = 0; | |
2056 | dev->flush_domains = 0; | |
2057 | ||
673a394b EA |
2058 | for (i = 0; i < args->buffer_count; i++) { |
2059 | struct drm_gem_object *obj = object_list[i]; | |
673a394b | 2060 | |
646f0f6e | 2061 | /* Compute new gpu domains and update invalidate/flush */ |
c0d90829 KP |
2062 | i915_gem_object_set_to_gpu_domain(obj, |
2063 | obj->pending_read_domains, | |
2064 | obj->pending_write_domain); | |
673a394b EA |
2065 | } |
2066 | ||
2067 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
2068 | ||
646f0f6e KP |
2069 | if (dev->invalidate_domains | dev->flush_domains) { |
2070 | #if WATCH_EXEC | |
2071 | DRM_INFO("%s: invalidate_domains %08x flush_domains %08x\n", | |
2072 | __func__, | |
2073 | dev->invalidate_domains, | |
2074 | dev->flush_domains); | |
2075 | #endif | |
2076 | i915_gem_flush(dev, | |
2077 | dev->invalidate_domains, | |
2078 | dev->flush_domains); | |
2079 | if (dev->flush_domains) | |
2080 | (void)i915_add_request(dev, dev->flush_domains); | |
2081 | } | |
673a394b EA |
2082 | |
2083 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
2084 | ||
2085 | #if WATCH_COHERENCY | |
2086 | for (i = 0; i < args->buffer_count; i++) { | |
2087 | i915_gem_object_check_coherency(object_list[i], | |
2088 | exec_list[i].handle); | |
2089 | } | |
2090 | #endif | |
2091 | ||
2092 | exec_offset = exec_list[args->buffer_count - 1].offset; | |
2093 | ||
2094 | #if WATCH_EXEC | |
2095 | i915_gem_dump_object(object_list[args->buffer_count - 1], | |
2096 | args->batch_len, | |
2097 | __func__, | |
2098 | ~0); | |
2099 | #endif | |
2100 | ||
673a394b EA |
2101 | /* Exec the batchbuffer */ |
2102 | ret = i915_dispatch_gem_execbuffer(dev, args, exec_offset); | |
2103 | if (ret) { | |
2104 | DRM_ERROR("dispatch failed %d\n", ret); | |
2105 | goto err; | |
2106 | } | |
2107 | ||
2108 | /* | |
2109 | * Ensure that the commands in the batch buffer are | |
2110 | * finished before the interrupt fires | |
2111 | */ | |
2112 | flush_domains = i915_retire_commands(dev); | |
2113 | ||
2114 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
2115 | ||
2116 | /* | |
2117 | * Get a seqno representing the execution of the current buffer, | |
2118 | * which we can wait on. We would like to mitigate these interrupts, | |
2119 | * likely by only creating seqnos occasionally (so that we have | |
2120 | * *some* interrupts representing completion of buffers that we can | |
2121 | * wait on when trying to clear up gtt space). | |
2122 | */ | |
2123 | seqno = i915_add_request(dev, flush_domains); | |
2124 | BUG_ON(seqno == 0); | |
2125 | i915_file_priv->mm.last_gem_seqno = seqno; | |
2126 | for (i = 0; i < args->buffer_count; i++) { | |
2127 | struct drm_gem_object *obj = object_list[i]; | |
673a394b | 2128 | |
ce44b0ea | 2129 | i915_gem_object_move_to_active(obj, seqno); |
673a394b EA |
2130 | #if WATCH_LRU |
2131 | DRM_INFO("%s: move to exec list %p\n", __func__, obj); | |
2132 | #endif | |
2133 | } | |
2134 | #if WATCH_LRU | |
2135 | i915_dump_lru(dev, __func__); | |
2136 | #endif | |
2137 | ||
2138 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
2139 | ||
2140 | /* Copy the new buffer offsets back to the user's exec list. */ | |
2141 | ret = copy_to_user((struct drm_i915_relocation_entry __user *) | |
2142 | (uintptr_t) args->buffers_ptr, | |
2143 | exec_list, | |
2144 | sizeof(*exec_list) * args->buffer_count); | |
2145 | if (ret) | |
2146 | DRM_ERROR("failed to copy %d exec entries " | |
2147 | "back to user (%d)\n", | |
2148 | args->buffer_count, ret); | |
2149 | err: | |
2150 | if (object_list != NULL) { | |
2151 | for (i = 0; i < pinned; i++) | |
2152 | i915_gem_object_unpin(object_list[i]); | |
2153 | ||
2154 | for (i = 0; i < args->buffer_count; i++) | |
2155 | drm_gem_object_unreference(object_list[i]); | |
2156 | } | |
2157 | mutex_unlock(&dev->struct_mutex); | |
2158 | ||
2159 | pre_mutex_err: | |
2160 | drm_free(object_list, sizeof(*object_list) * args->buffer_count, | |
2161 | DRM_MEM_DRIVER); | |
2162 | drm_free(exec_list, sizeof(*exec_list) * args->buffer_count, | |
2163 | DRM_MEM_DRIVER); | |
2164 | ||
2165 | return ret; | |
2166 | } | |
2167 | ||
2168 | int | |
2169 | i915_gem_object_pin(struct drm_gem_object *obj, uint32_t alignment) | |
2170 | { | |
2171 | struct drm_device *dev = obj->dev; | |
2172 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
2173 | int ret; | |
2174 | ||
2175 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
2176 | if (obj_priv->gtt_space == NULL) { | |
2177 | ret = i915_gem_object_bind_to_gtt(obj, alignment); | |
2178 | if (ret != 0) { | |
2179 | DRM_ERROR("Failure to bind: %d", ret); | |
2180 | return ret; | |
2181 | } | |
2182 | } | |
2183 | obj_priv->pin_count++; | |
2184 | ||
2185 | /* If the object is not active and not pending a flush, | |
2186 | * remove it from the inactive list | |
2187 | */ | |
2188 | if (obj_priv->pin_count == 1) { | |
2189 | atomic_inc(&dev->pin_count); | |
2190 | atomic_add(obj->size, &dev->pin_memory); | |
2191 | if (!obj_priv->active && | |
2192 | (obj->write_domain & ~(I915_GEM_DOMAIN_CPU | | |
2193 | I915_GEM_DOMAIN_GTT)) == 0 && | |
2194 | !list_empty(&obj_priv->list)) | |
2195 | list_del_init(&obj_priv->list); | |
2196 | } | |
2197 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
2198 | ||
2199 | return 0; | |
2200 | } | |
2201 | ||
2202 | void | |
2203 | i915_gem_object_unpin(struct drm_gem_object *obj) | |
2204 | { | |
2205 | struct drm_device *dev = obj->dev; | |
2206 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2207 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
2208 | ||
2209 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
2210 | obj_priv->pin_count--; | |
2211 | BUG_ON(obj_priv->pin_count < 0); | |
2212 | BUG_ON(obj_priv->gtt_space == NULL); | |
2213 | ||
2214 | /* If the object is no longer pinned, and is | |
2215 | * neither active nor being flushed, then stick it on | |
2216 | * the inactive list | |
2217 | */ | |
2218 | if (obj_priv->pin_count == 0) { | |
2219 | if (!obj_priv->active && | |
2220 | (obj->write_domain & ~(I915_GEM_DOMAIN_CPU | | |
2221 | I915_GEM_DOMAIN_GTT)) == 0) | |
2222 | list_move_tail(&obj_priv->list, | |
2223 | &dev_priv->mm.inactive_list); | |
2224 | atomic_dec(&dev->pin_count); | |
2225 | atomic_sub(obj->size, &dev->pin_memory); | |
2226 | } | |
2227 | i915_verify_inactive(dev, __FILE__, __LINE__); | |
2228 | } | |
2229 | ||
2230 | int | |
2231 | i915_gem_pin_ioctl(struct drm_device *dev, void *data, | |
2232 | struct drm_file *file_priv) | |
2233 | { | |
2234 | struct drm_i915_gem_pin *args = data; | |
2235 | struct drm_gem_object *obj; | |
2236 | struct drm_i915_gem_object *obj_priv; | |
2237 | int ret; | |
2238 | ||
2239 | mutex_lock(&dev->struct_mutex); | |
2240 | ||
2241 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
2242 | if (obj == NULL) { | |
2243 | DRM_ERROR("Bad handle in i915_gem_pin_ioctl(): %d\n", | |
2244 | args->handle); | |
2245 | mutex_unlock(&dev->struct_mutex); | |
2246 | return -EBADF; | |
2247 | } | |
2248 | obj_priv = obj->driver_private; | |
2249 | ||
2250 | ret = i915_gem_object_pin(obj, args->alignment); | |
2251 | if (ret != 0) { | |
2252 | drm_gem_object_unreference(obj); | |
2253 | mutex_unlock(&dev->struct_mutex); | |
2254 | return ret; | |
2255 | } | |
2256 | ||
2257 | /* XXX - flush the CPU caches for pinned objects | |
2258 | * as the X server doesn't manage domains yet | |
2259 | */ | |
e47c68e9 | 2260 | i915_gem_object_flush_cpu_write_domain(obj); |
673a394b EA |
2261 | args->offset = obj_priv->gtt_offset; |
2262 | drm_gem_object_unreference(obj); | |
2263 | mutex_unlock(&dev->struct_mutex); | |
2264 | ||
2265 | return 0; | |
2266 | } | |
2267 | ||
2268 | int | |
2269 | i915_gem_unpin_ioctl(struct drm_device *dev, void *data, | |
2270 | struct drm_file *file_priv) | |
2271 | { | |
2272 | struct drm_i915_gem_pin *args = data; | |
2273 | struct drm_gem_object *obj; | |
2274 | ||
2275 | mutex_lock(&dev->struct_mutex); | |
2276 | ||
2277 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
2278 | if (obj == NULL) { | |
2279 | DRM_ERROR("Bad handle in i915_gem_unpin_ioctl(): %d\n", | |
2280 | args->handle); | |
2281 | mutex_unlock(&dev->struct_mutex); | |
2282 | return -EBADF; | |
2283 | } | |
2284 | ||
2285 | i915_gem_object_unpin(obj); | |
2286 | ||
2287 | drm_gem_object_unreference(obj); | |
2288 | mutex_unlock(&dev->struct_mutex); | |
2289 | return 0; | |
2290 | } | |
2291 | ||
2292 | int | |
2293 | i915_gem_busy_ioctl(struct drm_device *dev, void *data, | |
2294 | struct drm_file *file_priv) | |
2295 | { | |
2296 | struct drm_i915_gem_busy *args = data; | |
2297 | struct drm_gem_object *obj; | |
2298 | struct drm_i915_gem_object *obj_priv; | |
2299 | ||
2300 | mutex_lock(&dev->struct_mutex); | |
2301 | obj = drm_gem_object_lookup(dev, file_priv, args->handle); | |
2302 | if (obj == NULL) { | |
2303 | DRM_ERROR("Bad handle in i915_gem_busy_ioctl(): %d\n", | |
2304 | args->handle); | |
2305 | mutex_unlock(&dev->struct_mutex); | |
2306 | return -EBADF; | |
2307 | } | |
2308 | ||
2309 | obj_priv = obj->driver_private; | |
2310 | args->busy = obj_priv->active; | |
2311 | ||
2312 | drm_gem_object_unreference(obj); | |
2313 | mutex_unlock(&dev->struct_mutex); | |
2314 | return 0; | |
2315 | } | |
2316 | ||
2317 | int | |
2318 | i915_gem_throttle_ioctl(struct drm_device *dev, void *data, | |
2319 | struct drm_file *file_priv) | |
2320 | { | |
2321 | return i915_gem_ring_throttle(dev, file_priv); | |
2322 | } | |
2323 | ||
2324 | int i915_gem_init_object(struct drm_gem_object *obj) | |
2325 | { | |
2326 | struct drm_i915_gem_object *obj_priv; | |
2327 | ||
2328 | obj_priv = drm_calloc(1, sizeof(*obj_priv), DRM_MEM_DRIVER); | |
2329 | if (obj_priv == NULL) | |
2330 | return -ENOMEM; | |
2331 | ||
2332 | /* | |
2333 | * We've just allocated pages from the kernel, | |
2334 | * so they've just been written by the CPU with | |
2335 | * zeros. They'll need to be clflushed before we | |
2336 | * use them with the GPU. | |
2337 | */ | |
2338 | obj->write_domain = I915_GEM_DOMAIN_CPU; | |
2339 | obj->read_domains = I915_GEM_DOMAIN_CPU; | |
2340 | ||
ba1eb1d8 KP |
2341 | obj_priv->agp_type = AGP_USER_MEMORY; |
2342 | ||
673a394b EA |
2343 | obj->driver_private = obj_priv; |
2344 | obj_priv->obj = obj; | |
2345 | INIT_LIST_HEAD(&obj_priv->list); | |
2346 | return 0; | |
2347 | } | |
2348 | ||
2349 | void i915_gem_free_object(struct drm_gem_object *obj) | |
2350 | { | |
2351 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
2352 | ||
2353 | while (obj_priv->pin_count > 0) | |
2354 | i915_gem_object_unpin(obj); | |
2355 | ||
2356 | i915_gem_object_unbind(obj); | |
2357 | ||
2358 | drm_free(obj_priv->page_cpu_valid, 1, DRM_MEM_DRIVER); | |
2359 | drm_free(obj->driver_private, 1, DRM_MEM_DRIVER); | |
2360 | } | |
2361 | ||
673a394b EA |
2362 | /** Unbinds all objects that are on the given buffer list. */ |
2363 | static int | |
2364 | i915_gem_evict_from_list(struct drm_device *dev, struct list_head *head) | |
2365 | { | |
2366 | struct drm_gem_object *obj; | |
2367 | struct drm_i915_gem_object *obj_priv; | |
2368 | int ret; | |
2369 | ||
2370 | while (!list_empty(head)) { | |
2371 | obj_priv = list_first_entry(head, | |
2372 | struct drm_i915_gem_object, | |
2373 | list); | |
2374 | obj = obj_priv->obj; | |
2375 | ||
2376 | if (obj_priv->pin_count != 0) { | |
2377 | DRM_ERROR("Pinned object in unbind list\n"); | |
2378 | mutex_unlock(&dev->struct_mutex); | |
2379 | return -EINVAL; | |
2380 | } | |
2381 | ||
2382 | ret = i915_gem_object_unbind(obj); | |
2383 | if (ret != 0) { | |
2384 | DRM_ERROR("Error unbinding object in LeaveVT: %d\n", | |
2385 | ret); | |
2386 | mutex_unlock(&dev->struct_mutex); | |
2387 | return ret; | |
2388 | } | |
2389 | } | |
2390 | ||
2391 | ||
2392 | return 0; | |
2393 | } | |
2394 | ||
2395 | static int | |
2396 | i915_gem_idle(struct drm_device *dev) | |
2397 | { | |
2398 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2399 | uint32_t seqno, cur_seqno, last_seqno; | |
2400 | int stuck, ret; | |
2401 | ||
6dbe2772 KP |
2402 | mutex_lock(&dev->struct_mutex); |
2403 | ||
2404 | if (dev_priv->mm.suspended || dev_priv->ring.ring_obj == NULL) { | |
2405 | mutex_unlock(&dev->struct_mutex); | |
673a394b | 2406 | return 0; |
6dbe2772 | 2407 | } |
673a394b EA |
2408 | |
2409 | /* Hack! Don't let anybody do execbuf while we don't control the chip. | |
2410 | * We need to replace this with a semaphore, or something. | |
2411 | */ | |
2412 | dev_priv->mm.suspended = 1; | |
2413 | ||
6dbe2772 KP |
2414 | /* Cancel the retire work handler, wait for it to finish if running |
2415 | */ | |
2416 | mutex_unlock(&dev->struct_mutex); | |
2417 | cancel_delayed_work_sync(&dev_priv->mm.retire_work); | |
2418 | mutex_lock(&dev->struct_mutex); | |
2419 | ||
673a394b EA |
2420 | i915_kernel_lost_context(dev); |
2421 | ||
2422 | /* Flush the GPU along with all non-CPU write domains | |
2423 | */ | |
2424 | i915_gem_flush(dev, ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT), | |
2425 | ~(I915_GEM_DOMAIN_CPU|I915_GEM_DOMAIN_GTT)); | |
2426 | seqno = i915_add_request(dev, ~(I915_GEM_DOMAIN_CPU | | |
2427 | I915_GEM_DOMAIN_GTT)); | |
2428 | ||
2429 | if (seqno == 0) { | |
2430 | mutex_unlock(&dev->struct_mutex); | |
2431 | return -ENOMEM; | |
2432 | } | |
2433 | ||
2434 | dev_priv->mm.waiting_gem_seqno = seqno; | |
2435 | last_seqno = 0; | |
2436 | stuck = 0; | |
2437 | for (;;) { | |
2438 | cur_seqno = i915_get_gem_seqno(dev); | |
2439 | if (i915_seqno_passed(cur_seqno, seqno)) | |
2440 | break; | |
2441 | if (last_seqno == cur_seqno) { | |
2442 | if (stuck++ > 100) { | |
2443 | DRM_ERROR("hardware wedged\n"); | |
2444 | dev_priv->mm.wedged = 1; | |
2445 | DRM_WAKEUP(&dev_priv->irq_queue); | |
2446 | break; | |
2447 | } | |
2448 | } | |
2449 | msleep(10); | |
2450 | last_seqno = cur_seqno; | |
2451 | } | |
2452 | dev_priv->mm.waiting_gem_seqno = 0; | |
2453 | ||
2454 | i915_gem_retire_requests(dev); | |
2455 | ||
28dfe52a EA |
2456 | if (!dev_priv->mm.wedged) { |
2457 | /* Active and flushing should now be empty as we've | |
2458 | * waited for a sequence higher than any pending execbuffer | |
2459 | */ | |
2460 | WARN_ON(!list_empty(&dev_priv->mm.active_list)); | |
2461 | WARN_ON(!list_empty(&dev_priv->mm.flushing_list)); | |
2462 | /* Request should now be empty as we've also waited | |
2463 | * for the last request in the list | |
2464 | */ | |
2465 | WARN_ON(!list_empty(&dev_priv->mm.request_list)); | |
2466 | } | |
673a394b | 2467 | |
28dfe52a EA |
2468 | /* Empty the active and flushing lists to inactive. If there's |
2469 | * anything left at this point, it means that we're wedged and | |
2470 | * nothing good's going to happen by leaving them there. So strip | |
2471 | * the GPU domains and just stuff them onto inactive. | |
673a394b | 2472 | */ |
28dfe52a EA |
2473 | while (!list_empty(&dev_priv->mm.active_list)) { |
2474 | struct drm_i915_gem_object *obj_priv; | |
673a394b | 2475 | |
28dfe52a EA |
2476 | obj_priv = list_first_entry(&dev_priv->mm.active_list, |
2477 | struct drm_i915_gem_object, | |
2478 | list); | |
2479 | obj_priv->obj->write_domain &= ~I915_GEM_GPU_DOMAINS; | |
2480 | i915_gem_object_move_to_inactive(obj_priv->obj); | |
2481 | } | |
2482 | ||
2483 | while (!list_empty(&dev_priv->mm.flushing_list)) { | |
2484 | struct drm_i915_gem_object *obj_priv; | |
2485 | ||
151903d5 | 2486 | obj_priv = list_first_entry(&dev_priv->mm.flushing_list, |
28dfe52a EA |
2487 | struct drm_i915_gem_object, |
2488 | list); | |
2489 | obj_priv->obj->write_domain &= ~I915_GEM_GPU_DOMAINS; | |
2490 | i915_gem_object_move_to_inactive(obj_priv->obj); | |
2491 | } | |
2492 | ||
2493 | ||
2494 | /* Move all inactive buffers out of the GTT. */ | |
673a394b | 2495 | ret = i915_gem_evict_from_list(dev, &dev_priv->mm.inactive_list); |
28dfe52a | 2496 | WARN_ON(!list_empty(&dev_priv->mm.inactive_list)); |
6dbe2772 KP |
2497 | if (ret) { |
2498 | mutex_unlock(&dev->struct_mutex); | |
673a394b | 2499 | return ret; |
6dbe2772 | 2500 | } |
673a394b | 2501 | |
6dbe2772 KP |
2502 | i915_gem_cleanup_ringbuffer(dev); |
2503 | mutex_unlock(&dev->struct_mutex); | |
2504 | ||
673a394b EA |
2505 | return 0; |
2506 | } | |
2507 | ||
2508 | static int | |
2509 | i915_gem_init_hws(struct drm_device *dev) | |
2510 | { | |
2511 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2512 | struct drm_gem_object *obj; | |
2513 | struct drm_i915_gem_object *obj_priv; | |
2514 | int ret; | |
2515 | ||
2516 | /* If we need a physical address for the status page, it's already | |
2517 | * initialized at driver load time. | |
2518 | */ | |
2519 | if (!I915_NEED_GFX_HWS(dev)) | |
2520 | return 0; | |
2521 | ||
2522 | obj = drm_gem_object_alloc(dev, 4096); | |
2523 | if (obj == NULL) { | |
2524 | DRM_ERROR("Failed to allocate status page\n"); | |
2525 | return -ENOMEM; | |
2526 | } | |
2527 | obj_priv = obj->driver_private; | |
ba1eb1d8 | 2528 | obj_priv->agp_type = AGP_USER_CACHED_MEMORY; |
673a394b EA |
2529 | |
2530 | ret = i915_gem_object_pin(obj, 4096); | |
2531 | if (ret != 0) { | |
2532 | drm_gem_object_unreference(obj); | |
2533 | return ret; | |
2534 | } | |
2535 | ||
2536 | dev_priv->status_gfx_addr = obj_priv->gtt_offset; | |
673a394b | 2537 | |
ba1eb1d8 KP |
2538 | dev_priv->hw_status_page = kmap(obj_priv->page_list[0]); |
2539 | if (dev_priv->hw_status_page == NULL) { | |
673a394b EA |
2540 | DRM_ERROR("Failed to map status page.\n"); |
2541 | memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map)); | |
2542 | drm_gem_object_unreference(obj); | |
2543 | return -EINVAL; | |
2544 | } | |
2545 | dev_priv->hws_obj = obj; | |
673a394b EA |
2546 | memset(dev_priv->hw_status_page, 0, PAGE_SIZE); |
2547 | I915_WRITE(HWS_PGA, dev_priv->status_gfx_addr); | |
ba1eb1d8 | 2548 | I915_READ(HWS_PGA); /* posting read */ |
673a394b EA |
2549 | DRM_DEBUG("hws offset: 0x%08x\n", dev_priv->status_gfx_addr); |
2550 | ||
2551 | return 0; | |
2552 | } | |
2553 | ||
2554 | static int | |
2555 | i915_gem_init_ringbuffer(struct drm_device *dev) | |
2556 | { | |
2557 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2558 | struct drm_gem_object *obj; | |
2559 | struct drm_i915_gem_object *obj_priv; | |
2560 | int ret; | |
50aa253d | 2561 | u32 head; |
673a394b EA |
2562 | |
2563 | ret = i915_gem_init_hws(dev); | |
2564 | if (ret != 0) | |
2565 | return ret; | |
2566 | ||
2567 | obj = drm_gem_object_alloc(dev, 128 * 1024); | |
2568 | if (obj == NULL) { | |
2569 | DRM_ERROR("Failed to allocate ringbuffer\n"); | |
2570 | return -ENOMEM; | |
2571 | } | |
2572 | obj_priv = obj->driver_private; | |
2573 | ||
2574 | ret = i915_gem_object_pin(obj, 4096); | |
2575 | if (ret != 0) { | |
2576 | drm_gem_object_unreference(obj); | |
2577 | return ret; | |
2578 | } | |
2579 | ||
2580 | /* Set up the kernel mapping for the ring. */ | |
2581 | dev_priv->ring.Size = obj->size; | |
2582 | dev_priv->ring.tail_mask = obj->size - 1; | |
2583 | ||
2584 | dev_priv->ring.map.offset = dev->agp->base + obj_priv->gtt_offset; | |
2585 | dev_priv->ring.map.size = obj->size; | |
2586 | dev_priv->ring.map.type = 0; | |
2587 | dev_priv->ring.map.flags = 0; | |
2588 | dev_priv->ring.map.mtrr = 0; | |
2589 | ||
bd88ee4c | 2590 | drm_core_ioremap_wc(&dev_priv->ring.map, dev); |
673a394b EA |
2591 | if (dev_priv->ring.map.handle == NULL) { |
2592 | DRM_ERROR("Failed to map ringbuffer.\n"); | |
2593 | memset(&dev_priv->ring, 0, sizeof(dev_priv->ring)); | |
2594 | drm_gem_object_unreference(obj); | |
2595 | return -EINVAL; | |
2596 | } | |
2597 | dev_priv->ring.ring_obj = obj; | |
2598 | dev_priv->ring.virtual_start = dev_priv->ring.map.handle; | |
2599 | ||
2600 | /* Stop the ring if it's running. */ | |
2601 | I915_WRITE(PRB0_CTL, 0); | |
673a394b | 2602 | I915_WRITE(PRB0_TAIL, 0); |
50aa253d | 2603 | I915_WRITE(PRB0_HEAD, 0); |
673a394b EA |
2604 | |
2605 | /* Initialize the ring. */ | |
2606 | I915_WRITE(PRB0_START, obj_priv->gtt_offset); | |
50aa253d KP |
2607 | head = I915_READ(PRB0_HEAD) & HEAD_ADDR; |
2608 | ||
2609 | /* G45 ring initialization fails to reset head to zero */ | |
2610 | if (head != 0) { | |
2611 | DRM_ERROR("Ring head not reset to zero " | |
2612 | "ctl %08x head %08x tail %08x start %08x\n", | |
2613 | I915_READ(PRB0_CTL), | |
2614 | I915_READ(PRB0_HEAD), | |
2615 | I915_READ(PRB0_TAIL), | |
2616 | I915_READ(PRB0_START)); | |
2617 | I915_WRITE(PRB0_HEAD, 0); | |
2618 | ||
2619 | DRM_ERROR("Ring head forced to zero " | |
2620 | "ctl %08x head %08x tail %08x start %08x\n", | |
2621 | I915_READ(PRB0_CTL), | |
2622 | I915_READ(PRB0_HEAD), | |
2623 | I915_READ(PRB0_TAIL), | |
2624 | I915_READ(PRB0_START)); | |
2625 | } | |
2626 | ||
673a394b EA |
2627 | I915_WRITE(PRB0_CTL, |
2628 | ((obj->size - 4096) & RING_NR_PAGES) | | |
2629 | RING_NO_REPORT | | |
2630 | RING_VALID); | |
2631 | ||
50aa253d KP |
2632 | head = I915_READ(PRB0_HEAD) & HEAD_ADDR; |
2633 | ||
2634 | /* If the head is still not zero, the ring is dead */ | |
2635 | if (head != 0) { | |
2636 | DRM_ERROR("Ring initialization failed " | |
2637 | "ctl %08x head %08x tail %08x start %08x\n", | |
2638 | I915_READ(PRB0_CTL), | |
2639 | I915_READ(PRB0_HEAD), | |
2640 | I915_READ(PRB0_TAIL), | |
2641 | I915_READ(PRB0_START)); | |
2642 | return -EIO; | |
2643 | } | |
2644 | ||
673a394b EA |
2645 | /* Update our cache of the ring state */ |
2646 | i915_kernel_lost_context(dev); | |
2647 | ||
2648 | return 0; | |
2649 | } | |
2650 | ||
2651 | static void | |
2652 | i915_gem_cleanup_ringbuffer(struct drm_device *dev) | |
2653 | { | |
2654 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2655 | ||
2656 | if (dev_priv->ring.ring_obj == NULL) | |
2657 | return; | |
2658 | ||
2659 | drm_core_ioremapfree(&dev_priv->ring.map, dev); | |
2660 | ||
2661 | i915_gem_object_unpin(dev_priv->ring.ring_obj); | |
2662 | drm_gem_object_unreference(dev_priv->ring.ring_obj); | |
2663 | dev_priv->ring.ring_obj = NULL; | |
2664 | memset(&dev_priv->ring, 0, sizeof(dev_priv->ring)); | |
2665 | ||
2666 | if (dev_priv->hws_obj != NULL) { | |
ba1eb1d8 KP |
2667 | struct drm_gem_object *obj = dev_priv->hws_obj; |
2668 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
2669 | ||
2670 | kunmap(obj_priv->page_list[0]); | |
2671 | i915_gem_object_unpin(obj); | |
2672 | drm_gem_object_unreference(obj); | |
673a394b EA |
2673 | dev_priv->hws_obj = NULL; |
2674 | memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map)); | |
ba1eb1d8 | 2675 | dev_priv->hw_status_page = NULL; |
673a394b EA |
2676 | |
2677 | /* Write high address into HWS_PGA when disabling. */ | |
2678 | I915_WRITE(HWS_PGA, 0x1ffff000); | |
2679 | } | |
2680 | } | |
2681 | ||
2682 | int | |
2683 | i915_gem_entervt_ioctl(struct drm_device *dev, void *data, | |
2684 | struct drm_file *file_priv) | |
2685 | { | |
2686 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2687 | int ret; | |
2688 | ||
2689 | if (dev_priv->mm.wedged) { | |
2690 | DRM_ERROR("Reenabling wedged hardware, good luck\n"); | |
2691 | dev_priv->mm.wedged = 0; | |
2692 | } | |
2693 | ||
2694 | ret = i915_gem_init_ringbuffer(dev); | |
2695 | if (ret != 0) | |
2696 | return ret; | |
2697 | ||
0839ccb8 KP |
2698 | dev_priv->mm.gtt_mapping = io_mapping_create_wc(dev->agp->base, |
2699 | dev->agp->agp_info.aper_size | |
2700 | * 1024 * 1024); | |
2701 | ||
673a394b EA |
2702 | mutex_lock(&dev->struct_mutex); |
2703 | BUG_ON(!list_empty(&dev_priv->mm.active_list)); | |
2704 | BUG_ON(!list_empty(&dev_priv->mm.flushing_list)); | |
2705 | BUG_ON(!list_empty(&dev_priv->mm.inactive_list)); | |
2706 | BUG_ON(!list_empty(&dev_priv->mm.request_list)); | |
2707 | dev_priv->mm.suspended = 0; | |
2708 | mutex_unlock(&dev->struct_mutex); | |
dbb19d30 KH |
2709 | |
2710 | drm_irq_install(dev); | |
2711 | ||
673a394b EA |
2712 | return 0; |
2713 | } | |
2714 | ||
2715 | int | |
2716 | i915_gem_leavevt_ioctl(struct drm_device *dev, void *data, | |
2717 | struct drm_file *file_priv) | |
2718 | { | |
0839ccb8 | 2719 | drm_i915_private_t *dev_priv = dev->dev_private; |
673a394b EA |
2720 | int ret; |
2721 | ||
673a394b | 2722 | ret = i915_gem_idle(dev); |
dbb19d30 KH |
2723 | drm_irq_uninstall(dev); |
2724 | ||
0839ccb8 | 2725 | io_mapping_free(dev_priv->mm.gtt_mapping); |
6dbe2772 | 2726 | return ret; |
673a394b EA |
2727 | } |
2728 | ||
2729 | void | |
2730 | i915_gem_lastclose(struct drm_device *dev) | |
2731 | { | |
2732 | int ret; | |
673a394b | 2733 | |
6dbe2772 KP |
2734 | ret = i915_gem_idle(dev); |
2735 | if (ret) | |
2736 | DRM_ERROR("failed to idle hardware: %d\n", ret); | |
673a394b EA |
2737 | } |
2738 | ||
2739 | void | |
2740 | i915_gem_load(struct drm_device *dev) | |
2741 | { | |
2742 | drm_i915_private_t *dev_priv = dev->dev_private; | |
2743 | ||
2744 | INIT_LIST_HEAD(&dev_priv->mm.active_list); | |
2745 | INIT_LIST_HEAD(&dev_priv->mm.flushing_list); | |
2746 | INIT_LIST_HEAD(&dev_priv->mm.inactive_list); | |
2747 | INIT_LIST_HEAD(&dev_priv->mm.request_list); | |
2748 | INIT_DELAYED_WORK(&dev_priv->mm.retire_work, | |
2749 | i915_gem_retire_work_handler); | |
2750 | dev_priv->mm.next_gem_seqno = 1; | |
2751 | ||
2752 | i915_gem_detect_bit_6_swizzle(dev); | |
2753 | } |