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1 | /************************************************************************** |
2 | * | |
3 | * Copyright (c) 2007-2009 VMware, Inc., Palo Alto, CA., USA | |
4 | * All Rights Reserved. | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the | |
8 | * "Software"), to deal in the Software without restriction, including | |
9 | * without limitation the rights to use, copy, modify, merge, publish, | |
10 | * distribute, sub license, and/or sell copies of the Software, and to | |
11 | * permit persons to whom the Software is furnished to do so, subject to | |
12 | * the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice (including the | |
15 | * next paragraph) shall be included in all copies or substantial portions | |
16 | * of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, | |
22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. | |
25 | * | |
26 | **************************************************************************/ | |
27 | /* | |
28 | * Authors: Thomas Hellstrom <thellstrom-at-vmware-dot-com> | |
29 | */ | |
30 | ||
31 | #include "ttm/ttm_bo_driver.h" | |
32 | #include "ttm/ttm_placement.h" | |
33 | #include <linux/io.h> | |
34 | #include <linux/highmem.h> | |
35 | #include <linux/wait.h> | |
36 | #include <linux/vmalloc.h> | |
ba4e7d97 TH |
37 | #include <linux/module.h> |
38 | ||
39 | void ttm_bo_free_old_node(struct ttm_buffer_object *bo) | |
40 | { | |
41 | struct ttm_mem_reg *old_mem = &bo->mem; | |
42 | ||
43 | if (old_mem->mm_node) { | |
a987fcaa | 44 | spin_lock(&bo->glob->lru_lock); |
ba4e7d97 | 45 | drm_mm_put_block(old_mem->mm_node); |
a987fcaa | 46 | spin_unlock(&bo->glob->lru_lock); |
ba4e7d97 TH |
47 | } |
48 | old_mem->mm_node = NULL; | |
49 | } | |
50 | ||
51 | int ttm_bo_move_ttm(struct ttm_buffer_object *bo, | |
52 | bool evict, bool no_wait, struct ttm_mem_reg *new_mem) | |
53 | { | |
54 | struct ttm_tt *ttm = bo->ttm; | |
55 | struct ttm_mem_reg *old_mem = &bo->mem; | |
56 | uint32_t save_flags = old_mem->placement; | |
57 | int ret; | |
58 | ||
59 | if (old_mem->mem_type != TTM_PL_SYSTEM) { | |
60 | ttm_tt_unbind(ttm); | |
61 | ttm_bo_free_old_node(bo); | |
62 | ttm_flag_masked(&old_mem->placement, TTM_PL_FLAG_SYSTEM, | |
63 | TTM_PL_MASK_MEM); | |
64 | old_mem->mem_type = TTM_PL_SYSTEM; | |
65 | save_flags = old_mem->placement; | |
66 | } | |
67 | ||
68 | ret = ttm_tt_set_placement_caching(ttm, new_mem->placement); | |
69 | if (unlikely(ret != 0)) | |
70 | return ret; | |
71 | ||
72 | if (new_mem->mem_type != TTM_PL_SYSTEM) { | |
73 | ret = ttm_tt_bind(ttm, new_mem); | |
74 | if (unlikely(ret != 0)) | |
75 | return ret; | |
76 | } | |
77 | ||
78 | *old_mem = *new_mem; | |
79 | new_mem->mm_node = NULL; | |
80 | ttm_flag_masked(&save_flags, new_mem->placement, TTM_PL_MASK_MEMTYPE); | |
81 | return 0; | |
82 | } | |
83 | EXPORT_SYMBOL(ttm_bo_move_ttm); | |
84 | ||
85 | int ttm_mem_reg_ioremap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem, | |
86 | void **virtual) | |
87 | { | |
88 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
89 | unsigned long bus_offset; | |
90 | unsigned long bus_size; | |
91 | unsigned long bus_base; | |
92 | int ret; | |
93 | void *addr; | |
94 | ||
95 | *virtual = NULL; | |
96 | ret = ttm_bo_pci_offset(bdev, mem, &bus_base, &bus_offset, &bus_size); | |
97 | if (ret || bus_size == 0) | |
98 | return ret; | |
99 | ||
100 | if (!(man->flags & TTM_MEMTYPE_FLAG_NEEDS_IOREMAP)) | |
101 | addr = (void *)(((u8 *) man->io_addr) + bus_offset); | |
102 | else { | |
103 | if (mem->placement & TTM_PL_FLAG_WC) | |
104 | addr = ioremap_wc(bus_base + bus_offset, bus_size); | |
105 | else | |
106 | addr = ioremap_nocache(bus_base + bus_offset, bus_size); | |
107 | if (!addr) | |
108 | return -ENOMEM; | |
109 | } | |
110 | *virtual = addr; | |
111 | return 0; | |
112 | } | |
113 | ||
114 | void ttm_mem_reg_iounmap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem, | |
115 | void *virtual) | |
116 | { | |
117 | struct ttm_mem_type_manager *man; | |
118 | ||
119 | man = &bdev->man[mem->mem_type]; | |
120 | ||
121 | if (virtual && (man->flags & TTM_MEMTYPE_FLAG_NEEDS_IOREMAP)) | |
122 | iounmap(virtual); | |
123 | } | |
124 | ||
125 | static int ttm_copy_io_page(void *dst, void *src, unsigned long page) | |
126 | { | |
127 | uint32_t *dstP = | |
128 | (uint32_t *) ((unsigned long)dst + (page << PAGE_SHIFT)); | |
129 | uint32_t *srcP = | |
130 | (uint32_t *) ((unsigned long)src + (page << PAGE_SHIFT)); | |
131 | ||
132 | int i; | |
133 | for (i = 0; i < PAGE_SIZE / sizeof(uint32_t); ++i) | |
134 | iowrite32(ioread32(srcP++), dstP++); | |
135 | return 0; | |
136 | } | |
137 | ||
138 | static int ttm_copy_io_ttm_page(struct ttm_tt *ttm, void *src, | |
542c6f6d TH |
139 | unsigned long page, |
140 | pgprot_t prot) | |
ba4e7d97 TH |
141 | { |
142 | struct page *d = ttm_tt_get_page(ttm, page); | |
143 | void *dst; | |
144 | ||
145 | if (!d) | |
146 | return -ENOMEM; | |
147 | ||
148 | src = (void *)((unsigned long)src + (page << PAGE_SHIFT)); | |
542c6f6d TH |
149 | |
150 | #ifdef CONFIG_X86 | |
151 | dst = kmap_atomic_prot(d, KM_USER0, prot); | |
152 | #else | |
6d0897ba | 153 | if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) |
542c6f6d TH |
154 | dst = vmap(&d, 1, 0, prot); |
155 | else | |
156 | dst = kmap(d); | |
157 | #endif | |
ba4e7d97 TH |
158 | if (!dst) |
159 | return -ENOMEM; | |
160 | ||
161 | memcpy_fromio(dst, src, PAGE_SIZE); | |
542c6f6d TH |
162 | |
163 | #ifdef CONFIG_X86 | |
164 | kunmap_atomic(dst, KM_USER0); | |
165 | #else | |
6d0897ba | 166 | if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) |
542c6f6d TH |
167 | vunmap(dst); |
168 | else | |
169 | kunmap(d); | |
170 | #endif | |
171 | ||
ba4e7d97 TH |
172 | return 0; |
173 | } | |
174 | ||
175 | static int ttm_copy_ttm_io_page(struct ttm_tt *ttm, void *dst, | |
542c6f6d TH |
176 | unsigned long page, |
177 | pgprot_t prot) | |
ba4e7d97 TH |
178 | { |
179 | struct page *s = ttm_tt_get_page(ttm, page); | |
180 | void *src; | |
181 | ||
182 | if (!s) | |
183 | return -ENOMEM; | |
184 | ||
185 | dst = (void *)((unsigned long)dst + (page << PAGE_SHIFT)); | |
542c6f6d TH |
186 | #ifdef CONFIG_X86 |
187 | src = kmap_atomic_prot(s, KM_USER0, prot); | |
188 | #else | |
6d0897ba | 189 | if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) |
542c6f6d TH |
190 | src = vmap(&s, 1, 0, prot); |
191 | else | |
192 | src = kmap(s); | |
193 | #endif | |
ba4e7d97 TH |
194 | if (!src) |
195 | return -ENOMEM; | |
196 | ||
197 | memcpy_toio(dst, src, PAGE_SIZE); | |
542c6f6d TH |
198 | |
199 | #ifdef CONFIG_X86 | |
200 | kunmap_atomic(src, KM_USER0); | |
201 | #else | |
6d0897ba | 202 | if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) |
542c6f6d TH |
203 | vunmap(src); |
204 | else | |
205 | kunmap(s); | |
206 | #endif | |
207 | ||
ba4e7d97 TH |
208 | return 0; |
209 | } | |
210 | ||
211 | int ttm_bo_move_memcpy(struct ttm_buffer_object *bo, | |
212 | bool evict, bool no_wait, struct ttm_mem_reg *new_mem) | |
213 | { | |
214 | struct ttm_bo_device *bdev = bo->bdev; | |
215 | struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type]; | |
216 | struct ttm_tt *ttm = bo->ttm; | |
217 | struct ttm_mem_reg *old_mem = &bo->mem; | |
218 | struct ttm_mem_reg old_copy = *old_mem; | |
219 | void *old_iomap; | |
220 | void *new_iomap; | |
221 | int ret; | |
222 | uint32_t save_flags = old_mem->placement; | |
223 | unsigned long i; | |
224 | unsigned long page; | |
225 | unsigned long add = 0; | |
226 | int dir; | |
227 | ||
228 | ret = ttm_mem_reg_ioremap(bdev, old_mem, &old_iomap); | |
229 | if (ret) | |
230 | return ret; | |
231 | ret = ttm_mem_reg_ioremap(bdev, new_mem, &new_iomap); | |
232 | if (ret) | |
233 | goto out; | |
234 | ||
235 | if (old_iomap == NULL && new_iomap == NULL) | |
236 | goto out2; | |
237 | if (old_iomap == NULL && ttm == NULL) | |
238 | goto out2; | |
239 | ||
240 | add = 0; | |
241 | dir = 1; | |
242 | ||
243 | if ((old_mem->mem_type == new_mem->mem_type) && | |
244 | (new_mem->mm_node->start < | |
245 | old_mem->mm_node->start + old_mem->mm_node->size)) { | |
246 | dir = -1; | |
247 | add = new_mem->num_pages - 1; | |
248 | } | |
249 | ||
250 | for (i = 0; i < new_mem->num_pages; ++i) { | |
251 | page = i * dir + add; | |
542c6f6d TH |
252 | if (old_iomap == NULL) { |
253 | pgprot_t prot = ttm_io_prot(old_mem->placement, | |
254 | PAGE_KERNEL); | |
255 | ret = ttm_copy_ttm_io_page(ttm, new_iomap, page, | |
256 | prot); | |
257 | } else if (new_iomap == NULL) { | |
258 | pgprot_t prot = ttm_io_prot(new_mem->placement, | |
259 | PAGE_KERNEL); | |
260 | ret = ttm_copy_io_ttm_page(ttm, old_iomap, page, | |
261 | prot); | |
262 | } else | |
ba4e7d97 TH |
263 | ret = ttm_copy_io_page(new_iomap, old_iomap, page); |
264 | if (ret) | |
265 | goto out1; | |
266 | } | |
267 | mb(); | |
268 | out2: | |
269 | ttm_bo_free_old_node(bo); | |
270 | ||
271 | *old_mem = *new_mem; | |
272 | new_mem->mm_node = NULL; | |
273 | ttm_flag_masked(&save_flags, new_mem->placement, TTM_PL_MASK_MEMTYPE); | |
274 | ||
275 | if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && (ttm != NULL)) { | |
276 | ttm_tt_unbind(ttm); | |
277 | ttm_tt_destroy(ttm); | |
278 | bo->ttm = NULL; | |
279 | } | |
280 | ||
281 | out1: | |
282 | ttm_mem_reg_iounmap(bdev, new_mem, new_iomap); | |
283 | out: | |
284 | ttm_mem_reg_iounmap(bdev, &old_copy, old_iomap); | |
285 | return ret; | |
286 | } | |
287 | EXPORT_SYMBOL(ttm_bo_move_memcpy); | |
288 | ||
289 | static void ttm_transfered_destroy(struct ttm_buffer_object *bo) | |
290 | { | |
291 | kfree(bo); | |
292 | } | |
293 | ||
294 | /** | |
295 | * ttm_buffer_object_transfer | |
296 | * | |
297 | * @bo: A pointer to a struct ttm_buffer_object. | |
298 | * @new_obj: A pointer to a pointer to a newly created ttm_buffer_object, | |
299 | * holding the data of @bo with the old placement. | |
300 | * | |
301 | * This is a utility function that may be called after an accelerated move | |
302 | * has been scheduled. A new buffer object is created as a placeholder for | |
303 | * the old data while it's being copied. When that buffer object is idle, | |
304 | * it can be destroyed, releasing the space of the old placement. | |
305 | * Returns: | |
306 | * !0: Failure. | |
307 | */ | |
308 | ||
309 | static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo, | |
310 | struct ttm_buffer_object **new_obj) | |
311 | { | |
312 | struct ttm_buffer_object *fbo; | |
313 | struct ttm_bo_device *bdev = bo->bdev; | |
314 | struct ttm_bo_driver *driver = bdev->driver; | |
315 | ||
316 | fbo = kzalloc(sizeof(*fbo), GFP_KERNEL); | |
317 | if (!fbo) | |
318 | return -ENOMEM; | |
319 | ||
320 | *fbo = *bo; | |
321 | ||
322 | /** | |
323 | * Fix up members that we shouldn't copy directly: | |
324 | * TODO: Explicit member copy would probably be better here. | |
325 | */ | |
326 | ||
327 | spin_lock_init(&fbo->lock); | |
328 | init_waitqueue_head(&fbo->event_queue); | |
329 | INIT_LIST_HEAD(&fbo->ddestroy); | |
330 | INIT_LIST_HEAD(&fbo->lru); | |
331 | INIT_LIST_HEAD(&fbo->swap); | |
332 | fbo->vm_node = NULL; | |
333 | ||
334 | fbo->sync_obj = driver->sync_obj_ref(bo->sync_obj); | |
335 | if (fbo->mem.mm_node) | |
336 | fbo->mem.mm_node->private = (void *)fbo; | |
337 | kref_init(&fbo->list_kref); | |
338 | kref_init(&fbo->kref); | |
339 | fbo->destroy = &ttm_transfered_destroy; | |
340 | ||
341 | *new_obj = fbo; | |
342 | return 0; | |
343 | } | |
344 | ||
345 | pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp) | |
346 | { | |
347 | #if defined(__i386__) || defined(__x86_64__) | |
348 | if (caching_flags & TTM_PL_FLAG_WC) | |
349 | tmp = pgprot_writecombine(tmp); | |
350 | else if (boot_cpu_data.x86 > 3) | |
351 | tmp = pgprot_noncached(tmp); | |
352 | ||
353 | #elif defined(__powerpc__) | |
354 | if (!(caching_flags & TTM_PL_FLAG_CACHED)) { | |
355 | pgprot_val(tmp) |= _PAGE_NO_CACHE; | |
356 | if (caching_flags & TTM_PL_FLAG_UNCACHED) | |
357 | pgprot_val(tmp) |= _PAGE_GUARDED; | |
358 | } | |
359 | #endif | |
360 | #if defined(__ia64__) | |
361 | if (caching_flags & TTM_PL_FLAG_WC) | |
362 | tmp = pgprot_writecombine(tmp); | |
363 | else | |
364 | tmp = pgprot_noncached(tmp); | |
365 | #endif | |
366 | #if defined(__sparc__) | |
367 | if (!(caching_flags & TTM_PL_FLAG_CACHED)) | |
368 | tmp = pgprot_noncached(tmp); | |
369 | #endif | |
370 | return tmp; | |
371 | } | |
372 | ||
373 | static int ttm_bo_ioremap(struct ttm_buffer_object *bo, | |
374 | unsigned long bus_base, | |
375 | unsigned long bus_offset, | |
376 | unsigned long bus_size, | |
377 | struct ttm_bo_kmap_obj *map) | |
378 | { | |
379 | struct ttm_bo_device *bdev = bo->bdev; | |
380 | struct ttm_mem_reg *mem = &bo->mem; | |
381 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
382 | ||
383 | if (!(man->flags & TTM_MEMTYPE_FLAG_NEEDS_IOREMAP)) { | |
384 | map->bo_kmap_type = ttm_bo_map_premapped; | |
385 | map->virtual = (void *)(((u8 *) man->io_addr) + bus_offset); | |
386 | } else { | |
387 | map->bo_kmap_type = ttm_bo_map_iomap; | |
388 | if (mem->placement & TTM_PL_FLAG_WC) | |
389 | map->virtual = ioremap_wc(bus_base + bus_offset, | |
390 | bus_size); | |
391 | else | |
392 | map->virtual = ioremap_nocache(bus_base + bus_offset, | |
393 | bus_size); | |
394 | } | |
395 | return (!map->virtual) ? -ENOMEM : 0; | |
396 | } | |
397 | ||
398 | static int ttm_bo_kmap_ttm(struct ttm_buffer_object *bo, | |
399 | unsigned long start_page, | |
400 | unsigned long num_pages, | |
401 | struct ttm_bo_kmap_obj *map) | |
402 | { | |
403 | struct ttm_mem_reg *mem = &bo->mem; pgprot_t prot; | |
404 | struct ttm_tt *ttm = bo->ttm; | |
405 | struct page *d; | |
406 | int i; | |
407 | ||
408 | BUG_ON(!ttm); | |
409 | if (num_pages == 1 && (mem->placement & TTM_PL_FLAG_CACHED)) { | |
410 | /* | |
411 | * We're mapping a single page, and the desired | |
412 | * page protection is consistent with the bo. | |
413 | */ | |
414 | ||
415 | map->bo_kmap_type = ttm_bo_map_kmap; | |
416 | map->page = ttm_tt_get_page(ttm, start_page); | |
417 | map->virtual = kmap(map->page); | |
418 | } else { | |
419 | /* | |
420 | * Populate the part we're mapping; | |
421 | */ | |
422 | for (i = start_page; i < start_page + num_pages; ++i) { | |
423 | d = ttm_tt_get_page(ttm, i); | |
424 | if (!d) | |
425 | return -ENOMEM; | |
426 | } | |
427 | ||
428 | /* | |
429 | * We need to use vmap to get the desired page protection | |
af901ca1 | 430 | * or to make the buffer object look contiguous. |
ba4e7d97 TH |
431 | */ |
432 | prot = (mem->placement & TTM_PL_FLAG_CACHED) ? | |
433 | PAGE_KERNEL : | |
434 | ttm_io_prot(mem->placement, PAGE_KERNEL); | |
435 | map->bo_kmap_type = ttm_bo_map_vmap; | |
436 | map->virtual = vmap(ttm->pages + start_page, num_pages, | |
437 | 0, prot); | |
438 | } | |
439 | return (!map->virtual) ? -ENOMEM : 0; | |
440 | } | |
441 | ||
442 | int ttm_bo_kmap(struct ttm_buffer_object *bo, | |
443 | unsigned long start_page, unsigned long num_pages, | |
444 | struct ttm_bo_kmap_obj *map) | |
445 | { | |
446 | int ret; | |
447 | unsigned long bus_base; | |
448 | unsigned long bus_offset; | |
449 | unsigned long bus_size; | |
450 | ||
451 | BUG_ON(!list_empty(&bo->swap)); | |
452 | map->virtual = NULL; | |
453 | if (num_pages > bo->num_pages) | |
454 | return -EINVAL; | |
455 | if (start_page > bo->num_pages) | |
456 | return -EINVAL; | |
457 | #if 0 | |
458 | if (num_pages > 1 && !DRM_SUSER(DRM_CURPROC)) | |
459 | return -EPERM; | |
460 | #endif | |
461 | ret = ttm_bo_pci_offset(bo->bdev, &bo->mem, &bus_base, | |
462 | &bus_offset, &bus_size); | |
463 | if (ret) | |
464 | return ret; | |
465 | if (bus_size == 0) { | |
466 | return ttm_bo_kmap_ttm(bo, start_page, num_pages, map); | |
467 | } else { | |
468 | bus_offset += start_page << PAGE_SHIFT; | |
469 | bus_size = num_pages << PAGE_SHIFT; | |
470 | return ttm_bo_ioremap(bo, bus_base, bus_offset, bus_size, map); | |
471 | } | |
472 | } | |
473 | EXPORT_SYMBOL(ttm_bo_kmap); | |
474 | ||
475 | void ttm_bo_kunmap(struct ttm_bo_kmap_obj *map) | |
476 | { | |
477 | if (!map->virtual) | |
478 | return; | |
479 | switch (map->bo_kmap_type) { | |
480 | case ttm_bo_map_iomap: | |
481 | iounmap(map->virtual); | |
482 | break; | |
483 | case ttm_bo_map_vmap: | |
484 | vunmap(map->virtual); | |
485 | break; | |
486 | case ttm_bo_map_kmap: | |
487 | kunmap(map->page); | |
488 | break; | |
489 | case ttm_bo_map_premapped: | |
490 | break; | |
491 | default: | |
492 | BUG(); | |
493 | } | |
494 | map->virtual = NULL; | |
495 | map->page = NULL; | |
496 | } | |
497 | EXPORT_SYMBOL(ttm_bo_kunmap); | |
498 | ||
499 | int ttm_bo_pfn_prot(struct ttm_buffer_object *bo, | |
500 | unsigned long dst_offset, | |
501 | unsigned long *pfn, pgprot_t *prot) | |
502 | { | |
503 | struct ttm_mem_reg *mem = &bo->mem; | |
504 | struct ttm_bo_device *bdev = bo->bdev; | |
505 | unsigned long bus_offset; | |
506 | unsigned long bus_size; | |
507 | unsigned long bus_base; | |
508 | int ret; | |
509 | ret = ttm_bo_pci_offset(bdev, mem, &bus_base, &bus_offset, | |
510 | &bus_size); | |
511 | if (ret) | |
512 | return -EINVAL; | |
513 | if (bus_size != 0) | |
514 | *pfn = (bus_base + bus_offset + dst_offset) >> PAGE_SHIFT; | |
515 | else | |
516 | if (!bo->ttm) | |
517 | return -EINVAL; | |
518 | else | |
519 | *pfn = page_to_pfn(ttm_tt_get_page(bo->ttm, | |
520 | dst_offset >> | |
521 | PAGE_SHIFT)); | |
522 | *prot = (mem->placement & TTM_PL_FLAG_CACHED) ? | |
523 | PAGE_KERNEL : ttm_io_prot(mem->placement, PAGE_KERNEL); | |
524 | ||
525 | return 0; | |
526 | } | |
527 | ||
528 | int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo, | |
529 | void *sync_obj, | |
530 | void *sync_obj_arg, | |
531 | bool evict, bool no_wait, | |
532 | struct ttm_mem_reg *new_mem) | |
533 | { | |
534 | struct ttm_bo_device *bdev = bo->bdev; | |
535 | struct ttm_bo_driver *driver = bdev->driver; | |
536 | struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type]; | |
537 | struct ttm_mem_reg *old_mem = &bo->mem; | |
538 | int ret; | |
539 | uint32_t save_flags = old_mem->placement; | |
540 | struct ttm_buffer_object *ghost_obj; | |
541 | void *tmp_obj = NULL; | |
542 | ||
543 | spin_lock(&bo->lock); | |
544 | if (bo->sync_obj) { | |
545 | tmp_obj = bo->sync_obj; | |
546 | bo->sync_obj = NULL; | |
547 | } | |
548 | bo->sync_obj = driver->sync_obj_ref(sync_obj); | |
549 | bo->sync_obj_arg = sync_obj_arg; | |
550 | if (evict) { | |
551 | ret = ttm_bo_wait(bo, false, false, false); | |
552 | spin_unlock(&bo->lock); | |
4677f15c TH |
553 | if (tmp_obj) |
554 | driver->sync_obj_unref(&tmp_obj); | |
ba4e7d97 TH |
555 | if (ret) |
556 | return ret; | |
557 | ||
558 | ttm_bo_free_old_node(bo); | |
559 | if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && | |
560 | (bo->ttm != NULL)) { | |
561 | ttm_tt_unbind(bo->ttm); | |
562 | ttm_tt_destroy(bo->ttm); | |
563 | bo->ttm = NULL; | |
564 | } | |
565 | } else { | |
566 | /** | |
567 | * This should help pipeline ordinary buffer moves. | |
568 | * | |
569 | * Hang old buffer memory on a new buffer object, | |
570 | * and leave it to be released when the GPU | |
571 | * operation has completed. | |
572 | */ | |
573 | ||
574 | set_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); | |
575 | spin_unlock(&bo->lock); | |
4677f15c TH |
576 | if (tmp_obj) |
577 | driver->sync_obj_unref(&tmp_obj); | |
ba4e7d97 TH |
578 | |
579 | ret = ttm_buffer_object_transfer(bo, &ghost_obj); | |
580 | if (ret) | |
581 | return ret; | |
582 | ||
583 | /** | |
584 | * If we're not moving to fixed memory, the TTM object | |
585 | * needs to stay alive. Otherwhise hang it on the ghost | |
586 | * bo to be unbound and destroyed. | |
587 | */ | |
588 | ||
589 | if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) | |
590 | ghost_obj->ttm = NULL; | |
591 | else | |
592 | bo->ttm = NULL; | |
593 | ||
594 | ttm_bo_unreserve(ghost_obj); | |
595 | ttm_bo_unref(&ghost_obj); | |
596 | } | |
597 | ||
598 | *old_mem = *new_mem; | |
599 | new_mem->mm_node = NULL; | |
600 | ttm_flag_masked(&save_flags, new_mem->placement, TTM_PL_MASK_MEMTYPE); | |
601 | return 0; | |
602 | } | |
603 | EXPORT_SYMBOL(ttm_bo_move_accel_cleanup); |