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ba4e7d97 TH |
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, | |
9d87fa21 JG |
52 | bool evict, bool no_wait_reserve, |
53 | bool no_wait_gpu, struct ttm_mem_reg *new_mem) | |
ba4e7d97 TH |
54 | { |
55 | struct ttm_tt *ttm = bo->ttm; | |
56 | struct ttm_mem_reg *old_mem = &bo->mem; | |
ba4e7d97 TH |
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; | |
ba4e7d97 TH |
65 | } |
66 | ||
67 | ret = ttm_tt_set_placement_caching(ttm, new_mem->placement); | |
68 | if (unlikely(ret != 0)) | |
69 | return ret; | |
70 | ||
71 | if (new_mem->mem_type != TTM_PL_SYSTEM) { | |
72 | ret = ttm_tt_bind(ttm, new_mem); | |
73 | if (unlikely(ret != 0)) | |
74 | return ret; | |
75 | } | |
76 | ||
77 | *old_mem = *new_mem; | |
78 | new_mem->mm_node = NULL; | |
110b20c3 | 79 | |
ba4e7d97 TH |
80 | return 0; |
81 | } | |
82 | EXPORT_SYMBOL(ttm_bo_move_ttm); | |
83 | ||
84 | int ttm_mem_reg_ioremap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem, | |
85 | void **virtual) | |
86 | { | |
87 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
88 | unsigned long bus_offset; | |
89 | unsigned long bus_size; | |
90 | unsigned long bus_base; | |
91 | int ret; | |
92 | void *addr; | |
93 | ||
94 | *virtual = NULL; | |
95 | ret = ttm_bo_pci_offset(bdev, mem, &bus_base, &bus_offset, &bus_size); | |
96 | if (ret || bus_size == 0) | |
97 | return ret; | |
98 | ||
99 | if (!(man->flags & TTM_MEMTYPE_FLAG_NEEDS_IOREMAP)) | |
100 | addr = (void *)(((u8 *) man->io_addr) + bus_offset); | |
101 | else { | |
102 | if (mem->placement & TTM_PL_FLAG_WC) | |
103 | addr = ioremap_wc(bus_base + bus_offset, bus_size); | |
104 | else | |
105 | addr = ioremap_nocache(bus_base + bus_offset, bus_size); | |
106 | if (!addr) | |
107 | return -ENOMEM; | |
108 | } | |
109 | *virtual = addr; | |
110 | return 0; | |
111 | } | |
112 | ||
113 | void ttm_mem_reg_iounmap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem, | |
114 | void *virtual) | |
115 | { | |
116 | struct ttm_mem_type_manager *man; | |
117 | ||
118 | man = &bdev->man[mem->mem_type]; | |
119 | ||
120 | if (virtual && (man->flags & TTM_MEMTYPE_FLAG_NEEDS_IOREMAP)) | |
121 | iounmap(virtual); | |
122 | } | |
123 | ||
124 | static int ttm_copy_io_page(void *dst, void *src, unsigned long page) | |
125 | { | |
126 | uint32_t *dstP = | |
127 | (uint32_t *) ((unsigned long)dst + (page << PAGE_SHIFT)); | |
128 | uint32_t *srcP = | |
129 | (uint32_t *) ((unsigned long)src + (page << PAGE_SHIFT)); | |
130 | ||
131 | int i; | |
132 | for (i = 0; i < PAGE_SIZE / sizeof(uint32_t); ++i) | |
133 | iowrite32(ioread32(srcP++), dstP++); | |
134 | return 0; | |
135 | } | |
136 | ||
137 | static int ttm_copy_io_ttm_page(struct ttm_tt *ttm, void *src, | |
542c6f6d TH |
138 | unsigned long page, |
139 | pgprot_t prot) | |
ba4e7d97 TH |
140 | { |
141 | struct page *d = ttm_tt_get_page(ttm, page); | |
142 | void *dst; | |
143 | ||
144 | if (!d) | |
145 | return -ENOMEM; | |
146 | ||
147 | src = (void *)((unsigned long)src + (page << PAGE_SHIFT)); | |
542c6f6d TH |
148 | |
149 | #ifdef CONFIG_X86 | |
150 | dst = kmap_atomic_prot(d, KM_USER0, prot); | |
151 | #else | |
6d0897ba | 152 | if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) |
542c6f6d TH |
153 | dst = vmap(&d, 1, 0, prot); |
154 | else | |
155 | dst = kmap(d); | |
156 | #endif | |
ba4e7d97 TH |
157 | if (!dst) |
158 | return -ENOMEM; | |
159 | ||
160 | memcpy_fromio(dst, src, PAGE_SIZE); | |
542c6f6d TH |
161 | |
162 | #ifdef CONFIG_X86 | |
163 | kunmap_atomic(dst, KM_USER0); | |
164 | #else | |
6d0897ba | 165 | if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) |
542c6f6d TH |
166 | vunmap(dst); |
167 | else | |
168 | kunmap(d); | |
169 | #endif | |
170 | ||
ba4e7d97 TH |
171 | return 0; |
172 | } | |
173 | ||
174 | static int ttm_copy_ttm_io_page(struct ttm_tt *ttm, void *dst, | |
542c6f6d TH |
175 | unsigned long page, |
176 | pgprot_t prot) | |
ba4e7d97 TH |
177 | { |
178 | struct page *s = ttm_tt_get_page(ttm, page); | |
179 | void *src; | |
180 | ||
181 | if (!s) | |
182 | return -ENOMEM; | |
183 | ||
184 | dst = (void *)((unsigned long)dst + (page << PAGE_SHIFT)); | |
542c6f6d TH |
185 | #ifdef CONFIG_X86 |
186 | src = kmap_atomic_prot(s, KM_USER0, prot); | |
187 | #else | |
6d0897ba | 188 | if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) |
542c6f6d TH |
189 | src = vmap(&s, 1, 0, prot); |
190 | else | |
191 | src = kmap(s); | |
192 | #endif | |
ba4e7d97 TH |
193 | if (!src) |
194 | return -ENOMEM; | |
195 | ||
196 | memcpy_toio(dst, src, PAGE_SIZE); | |
542c6f6d TH |
197 | |
198 | #ifdef CONFIG_X86 | |
199 | kunmap_atomic(src, KM_USER0); | |
200 | #else | |
6d0897ba | 201 | if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) |
542c6f6d TH |
202 | vunmap(src); |
203 | else | |
204 | kunmap(s); | |
205 | #endif | |
206 | ||
ba4e7d97 TH |
207 | return 0; |
208 | } | |
209 | ||
210 | int ttm_bo_move_memcpy(struct ttm_buffer_object *bo, | |
9d87fa21 JG |
211 | bool evict, bool no_wait_reserve, bool no_wait_gpu, |
212 | struct ttm_mem_reg *new_mem) | |
ba4e7d97 TH |
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; | |
ba4e7d97 TH |
222 | unsigned long i; |
223 | unsigned long page; | |
224 | unsigned long add = 0; | |
225 | int dir; | |
226 | ||
227 | ret = ttm_mem_reg_ioremap(bdev, old_mem, &old_iomap); | |
228 | if (ret) | |
229 | return ret; | |
230 | ret = ttm_mem_reg_ioremap(bdev, new_mem, &new_iomap); | |
231 | if (ret) | |
232 | goto out; | |
233 | ||
234 | if (old_iomap == NULL && new_iomap == NULL) | |
235 | goto out2; | |
236 | if (old_iomap == NULL && ttm == NULL) | |
237 | goto out2; | |
238 | ||
239 | add = 0; | |
240 | dir = 1; | |
241 | ||
242 | if ((old_mem->mem_type == new_mem->mem_type) && | |
243 | (new_mem->mm_node->start < | |
244 | old_mem->mm_node->start + old_mem->mm_node->size)) { | |
245 | dir = -1; | |
246 | add = new_mem->num_pages - 1; | |
247 | } | |
248 | ||
249 | for (i = 0; i < new_mem->num_pages; ++i) { | |
250 | page = i * dir + add; | |
542c6f6d TH |
251 | if (old_iomap == NULL) { |
252 | pgprot_t prot = ttm_io_prot(old_mem->placement, | |
253 | PAGE_KERNEL); | |
254 | ret = ttm_copy_ttm_io_page(ttm, new_iomap, page, | |
255 | prot); | |
256 | } else if (new_iomap == NULL) { | |
257 | pgprot_t prot = ttm_io_prot(new_mem->placement, | |
258 | PAGE_KERNEL); | |
259 | ret = ttm_copy_io_ttm_page(ttm, old_iomap, page, | |
260 | prot); | |
261 | } else | |
ba4e7d97 TH |
262 | ret = ttm_copy_io_page(new_iomap, old_iomap, page); |
263 | if (ret) | |
264 | goto out1; | |
265 | } | |
266 | mb(); | |
267 | out2: | |
268 | ttm_bo_free_old_node(bo); | |
269 | ||
270 | *old_mem = *new_mem; | |
271 | new_mem->mm_node = NULL; | |
ba4e7d97 TH |
272 | |
273 | if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && (ttm != NULL)) { | |
274 | ttm_tt_unbind(ttm); | |
275 | ttm_tt_destroy(ttm); | |
276 | bo->ttm = NULL; | |
277 | } | |
278 | ||
279 | out1: | |
280 | ttm_mem_reg_iounmap(bdev, new_mem, new_iomap); | |
281 | out: | |
282 | ttm_mem_reg_iounmap(bdev, &old_copy, old_iomap); | |
283 | return ret; | |
284 | } | |
285 | EXPORT_SYMBOL(ttm_bo_move_memcpy); | |
286 | ||
287 | static void ttm_transfered_destroy(struct ttm_buffer_object *bo) | |
288 | { | |
289 | kfree(bo); | |
290 | } | |
291 | ||
292 | /** | |
293 | * ttm_buffer_object_transfer | |
294 | * | |
295 | * @bo: A pointer to a struct ttm_buffer_object. | |
296 | * @new_obj: A pointer to a pointer to a newly created ttm_buffer_object, | |
297 | * holding the data of @bo with the old placement. | |
298 | * | |
299 | * This is a utility function that may be called after an accelerated move | |
300 | * has been scheduled. A new buffer object is created as a placeholder for | |
301 | * the old data while it's being copied. When that buffer object is idle, | |
302 | * it can be destroyed, releasing the space of the old placement. | |
303 | * Returns: | |
304 | * !0: Failure. | |
305 | */ | |
306 | ||
307 | static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo, | |
308 | struct ttm_buffer_object **new_obj) | |
309 | { | |
310 | struct ttm_buffer_object *fbo; | |
311 | struct ttm_bo_device *bdev = bo->bdev; | |
312 | struct ttm_bo_driver *driver = bdev->driver; | |
313 | ||
314 | fbo = kzalloc(sizeof(*fbo), GFP_KERNEL); | |
315 | if (!fbo) | |
316 | return -ENOMEM; | |
317 | ||
318 | *fbo = *bo; | |
319 | ||
320 | /** | |
321 | * Fix up members that we shouldn't copy directly: | |
322 | * TODO: Explicit member copy would probably be better here. | |
323 | */ | |
324 | ||
325 | spin_lock_init(&fbo->lock); | |
326 | init_waitqueue_head(&fbo->event_queue); | |
327 | INIT_LIST_HEAD(&fbo->ddestroy); | |
328 | INIT_LIST_HEAD(&fbo->lru); | |
329 | INIT_LIST_HEAD(&fbo->swap); | |
330 | fbo->vm_node = NULL; | |
331 | ||
332 | fbo->sync_obj = driver->sync_obj_ref(bo->sync_obj); | |
333 | if (fbo->mem.mm_node) | |
334 | fbo->mem.mm_node->private = (void *)fbo; | |
335 | kref_init(&fbo->list_kref); | |
336 | kref_init(&fbo->kref); | |
337 | fbo->destroy = &ttm_transfered_destroy; | |
338 | ||
339 | *new_obj = fbo; | |
340 | return 0; | |
341 | } | |
342 | ||
343 | pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp) | |
344 | { | |
345 | #if defined(__i386__) || defined(__x86_64__) | |
346 | if (caching_flags & TTM_PL_FLAG_WC) | |
347 | tmp = pgprot_writecombine(tmp); | |
348 | else if (boot_cpu_data.x86 > 3) | |
349 | tmp = pgprot_noncached(tmp); | |
350 | ||
351 | #elif defined(__powerpc__) | |
352 | if (!(caching_flags & TTM_PL_FLAG_CACHED)) { | |
353 | pgprot_val(tmp) |= _PAGE_NO_CACHE; | |
354 | if (caching_flags & TTM_PL_FLAG_UNCACHED) | |
355 | pgprot_val(tmp) |= _PAGE_GUARDED; | |
356 | } | |
357 | #endif | |
358 | #if defined(__ia64__) | |
359 | if (caching_flags & TTM_PL_FLAG_WC) | |
360 | tmp = pgprot_writecombine(tmp); | |
361 | else | |
362 | tmp = pgprot_noncached(tmp); | |
363 | #endif | |
364 | #if defined(__sparc__) | |
365 | if (!(caching_flags & TTM_PL_FLAG_CACHED)) | |
366 | tmp = pgprot_noncached(tmp); | |
367 | #endif | |
368 | return tmp; | |
369 | } | |
4bfd75cb | 370 | EXPORT_SYMBOL(ttm_io_prot); |
ba4e7d97 TH |
371 | |
372 | static int ttm_bo_ioremap(struct ttm_buffer_object *bo, | |
373 | unsigned long bus_base, | |
374 | unsigned long bus_offset, | |
375 | unsigned long bus_size, | |
376 | struct ttm_bo_kmap_obj *map) | |
377 | { | |
378 | struct ttm_bo_device *bdev = bo->bdev; | |
379 | struct ttm_mem_reg *mem = &bo->mem; | |
380 | struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type]; | |
381 | ||
382 | if (!(man->flags & TTM_MEMTYPE_FLAG_NEEDS_IOREMAP)) { | |
383 | map->bo_kmap_type = ttm_bo_map_premapped; | |
384 | map->virtual = (void *)(((u8 *) man->io_addr) + bus_offset); | |
385 | } else { | |
386 | map->bo_kmap_type = ttm_bo_map_iomap; | |
387 | if (mem->placement & TTM_PL_FLAG_WC) | |
388 | map->virtual = ioremap_wc(bus_base + bus_offset, | |
389 | bus_size); | |
390 | else | |
391 | map->virtual = ioremap_nocache(bus_base + bus_offset, | |
392 | bus_size); | |
393 | } | |
394 | return (!map->virtual) ? -ENOMEM : 0; | |
395 | } | |
396 | ||
397 | static int ttm_bo_kmap_ttm(struct ttm_buffer_object *bo, | |
398 | unsigned long start_page, | |
399 | unsigned long num_pages, | |
400 | struct ttm_bo_kmap_obj *map) | |
401 | { | |
402 | struct ttm_mem_reg *mem = &bo->mem; pgprot_t prot; | |
403 | struct ttm_tt *ttm = bo->ttm; | |
404 | struct page *d; | |
405 | int i; | |
406 | ||
407 | BUG_ON(!ttm); | |
408 | if (num_pages == 1 && (mem->placement & TTM_PL_FLAG_CACHED)) { | |
409 | /* | |
410 | * We're mapping a single page, and the desired | |
411 | * page protection is consistent with the bo. | |
412 | */ | |
413 | ||
414 | map->bo_kmap_type = ttm_bo_map_kmap; | |
415 | map->page = ttm_tt_get_page(ttm, start_page); | |
416 | map->virtual = kmap(map->page); | |
417 | } else { | |
418 | /* | |
419 | * Populate the part we're mapping; | |
420 | */ | |
421 | for (i = start_page; i < start_page + num_pages; ++i) { | |
422 | d = ttm_tt_get_page(ttm, i); | |
423 | if (!d) | |
424 | return -ENOMEM; | |
425 | } | |
426 | ||
427 | /* | |
428 | * We need to use vmap to get the desired page protection | |
af901ca1 | 429 | * or to make the buffer object look contiguous. |
ba4e7d97 TH |
430 | */ |
431 | prot = (mem->placement & TTM_PL_FLAG_CACHED) ? | |
432 | PAGE_KERNEL : | |
433 | ttm_io_prot(mem->placement, PAGE_KERNEL); | |
434 | map->bo_kmap_type = ttm_bo_map_vmap; | |
435 | map->virtual = vmap(ttm->pages + start_page, num_pages, | |
436 | 0, prot); | |
437 | } | |
438 | return (!map->virtual) ? -ENOMEM : 0; | |
439 | } | |
440 | ||
441 | int ttm_bo_kmap(struct ttm_buffer_object *bo, | |
442 | unsigned long start_page, unsigned long num_pages, | |
443 | struct ttm_bo_kmap_obj *map) | |
444 | { | |
445 | int ret; | |
446 | unsigned long bus_base; | |
447 | unsigned long bus_offset; | |
448 | unsigned long bus_size; | |
449 | ||
450 | BUG_ON(!list_empty(&bo->swap)); | |
451 | map->virtual = NULL; | |
452 | if (num_pages > bo->num_pages) | |
453 | return -EINVAL; | |
454 | if (start_page > bo->num_pages) | |
455 | return -EINVAL; | |
456 | #if 0 | |
457 | if (num_pages > 1 && !DRM_SUSER(DRM_CURPROC)) | |
458 | return -EPERM; | |
459 | #endif | |
460 | ret = ttm_bo_pci_offset(bo->bdev, &bo->mem, &bus_base, | |
461 | &bus_offset, &bus_size); | |
462 | if (ret) | |
463 | return ret; | |
464 | if (bus_size == 0) { | |
465 | return ttm_bo_kmap_ttm(bo, start_page, num_pages, map); | |
466 | } else { | |
467 | bus_offset += start_page << PAGE_SHIFT; | |
468 | bus_size = num_pages << PAGE_SHIFT; | |
469 | return ttm_bo_ioremap(bo, bus_base, bus_offset, bus_size, map); | |
470 | } | |
471 | } | |
472 | EXPORT_SYMBOL(ttm_bo_kmap); | |
473 | ||
474 | void ttm_bo_kunmap(struct ttm_bo_kmap_obj *map) | |
475 | { | |
476 | if (!map->virtual) | |
477 | return; | |
478 | switch (map->bo_kmap_type) { | |
479 | case ttm_bo_map_iomap: | |
480 | iounmap(map->virtual); | |
481 | break; | |
482 | case ttm_bo_map_vmap: | |
483 | vunmap(map->virtual); | |
484 | break; | |
485 | case ttm_bo_map_kmap: | |
486 | kunmap(map->page); | |
487 | break; | |
488 | case ttm_bo_map_premapped: | |
489 | break; | |
490 | default: | |
491 | BUG(); | |
492 | } | |
493 | map->virtual = NULL; | |
494 | map->page = NULL; | |
495 | } | |
496 | EXPORT_SYMBOL(ttm_bo_kunmap); | |
497 | ||
498 | int ttm_bo_pfn_prot(struct ttm_buffer_object *bo, | |
499 | unsigned long dst_offset, | |
500 | unsigned long *pfn, pgprot_t *prot) | |
501 | { | |
502 | struct ttm_mem_reg *mem = &bo->mem; | |
503 | struct ttm_bo_device *bdev = bo->bdev; | |
504 | unsigned long bus_offset; | |
505 | unsigned long bus_size; | |
506 | unsigned long bus_base; | |
507 | int ret; | |
508 | ret = ttm_bo_pci_offset(bdev, mem, &bus_base, &bus_offset, | |
509 | &bus_size); | |
510 | if (ret) | |
511 | return -EINVAL; | |
512 | if (bus_size != 0) | |
513 | *pfn = (bus_base + bus_offset + dst_offset) >> PAGE_SHIFT; | |
514 | else | |
515 | if (!bo->ttm) | |
516 | return -EINVAL; | |
517 | else | |
518 | *pfn = page_to_pfn(ttm_tt_get_page(bo->ttm, | |
519 | dst_offset >> | |
520 | PAGE_SHIFT)); | |
521 | *prot = (mem->placement & TTM_PL_FLAG_CACHED) ? | |
522 | PAGE_KERNEL : ttm_io_prot(mem->placement, PAGE_KERNEL); | |
523 | ||
524 | return 0; | |
525 | } | |
526 | ||
527 | int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo, | |
528 | void *sync_obj, | |
529 | void *sync_obj_arg, | |
9d87fa21 JG |
530 | bool evict, bool no_wait_reserve, |
531 | bool no_wait_gpu, | |
ba4e7d97 TH |
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; | |
ba4e7d97 TH |
539 | struct ttm_buffer_object *ghost_obj; |
540 | void *tmp_obj = NULL; | |
541 | ||
542 | spin_lock(&bo->lock); | |
543 | if (bo->sync_obj) { | |
544 | tmp_obj = bo->sync_obj; | |
545 | bo->sync_obj = NULL; | |
546 | } | |
547 | bo->sync_obj = driver->sync_obj_ref(sync_obj); | |
548 | bo->sync_obj_arg = sync_obj_arg; | |
549 | if (evict) { | |
550 | ret = ttm_bo_wait(bo, false, false, false); | |
551 | spin_unlock(&bo->lock); | |
4677f15c TH |
552 | if (tmp_obj) |
553 | driver->sync_obj_unref(&tmp_obj); | |
ba4e7d97 TH |
554 | if (ret) |
555 | return ret; | |
556 | ||
557 | ttm_bo_free_old_node(bo); | |
558 | if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && | |
559 | (bo->ttm != NULL)) { | |
560 | ttm_tt_unbind(bo->ttm); | |
561 | ttm_tt_destroy(bo->ttm); | |
562 | bo->ttm = NULL; | |
563 | } | |
564 | } else { | |
565 | /** | |
566 | * This should help pipeline ordinary buffer moves. | |
567 | * | |
568 | * Hang old buffer memory on a new buffer object, | |
569 | * and leave it to be released when the GPU | |
570 | * operation has completed. | |
571 | */ | |
572 | ||
573 | set_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); | |
574 | spin_unlock(&bo->lock); | |
4677f15c TH |
575 | if (tmp_obj) |
576 | driver->sync_obj_unref(&tmp_obj); | |
ba4e7d97 TH |
577 | |
578 | ret = ttm_buffer_object_transfer(bo, &ghost_obj); | |
579 | if (ret) | |
580 | return ret; | |
581 | ||
582 | /** | |
583 | * If we're not moving to fixed memory, the TTM object | |
584 | * needs to stay alive. Otherwhise hang it on the ghost | |
585 | * bo to be unbound and destroyed. | |
586 | */ | |
587 | ||
588 | if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) | |
589 | ghost_obj->ttm = NULL; | |
590 | else | |
591 | bo->ttm = NULL; | |
592 | ||
593 | ttm_bo_unreserve(ghost_obj); | |
594 | ttm_bo_unref(&ghost_obj); | |
595 | } | |
596 | ||
597 | *old_mem = *new_mem; | |
598 | new_mem->mm_node = NULL; | |
110b20c3 | 599 | |
ba4e7d97 TH |
600 | return 0; |
601 | } | |
602 | EXPORT_SYMBOL(ttm_bo_move_accel_cleanup); |