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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> | |
5a0e3ad6 | 36 | #include <linux/slab.h> |
ba4e7d97 | 37 | #include <linux/vmalloc.h> |
ba4e7d97 TH |
38 | #include <linux/module.h> |
39 | ||
40 | void ttm_bo_free_old_node(struct ttm_buffer_object *bo) | |
41 | { | |
42 | struct ttm_mem_reg *old_mem = &bo->mem; | |
43 | ||
44 | if (old_mem->mm_node) { | |
a987fcaa | 45 | spin_lock(&bo->glob->lru_lock); |
ba4e7d97 | 46 | drm_mm_put_block(old_mem->mm_node); |
a987fcaa | 47 | spin_unlock(&bo->glob->lru_lock); |
ba4e7d97 TH |
48 | } |
49 | old_mem->mm_node = NULL; | |
50 | } | |
51 | ||
52 | int ttm_bo_move_ttm(struct ttm_buffer_object *bo, | |
9d87fa21 JG |
53 | bool evict, bool no_wait_reserve, |
54 | bool no_wait_gpu, struct ttm_mem_reg *new_mem) | |
ba4e7d97 TH |
55 | { |
56 | struct ttm_tt *ttm = bo->ttm; | |
57 | struct ttm_mem_reg *old_mem = &bo->mem; | |
ba4e7d97 TH |
58 | int ret; |
59 | ||
60 | if (old_mem->mem_type != TTM_PL_SYSTEM) { | |
61 | ttm_tt_unbind(ttm); | |
62 | ttm_bo_free_old_node(bo); | |
63 | ttm_flag_masked(&old_mem->placement, TTM_PL_FLAG_SYSTEM, | |
64 | TTM_PL_MASK_MEM); | |
65 | old_mem->mem_type = TTM_PL_SYSTEM; | |
ba4e7d97 TH |
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; | |
110b20c3 | 80 | |
ba4e7d97 TH |
81 | return 0; |
82 | } | |
83 | EXPORT_SYMBOL(ttm_bo_move_ttm); | |
84 | ||
82c5da6b JG |
85 | int ttm_mem_io_reserve(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) |
86 | { | |
82c5da6b JG |
87 | int ret; |
88 | ||
0c321c79 JG |
89 | if (!mem->bus.io_reserved) { |
90 | mem->bus.io_reserved = true; | |
91 | ret = bdev->driver->io_mem_reserve(bdev, mem); | |
82c5da6b JG |
92 | if (unlikely(ret != 0)) |
93 | return ret; | |
82c5da6b JG |
94 | } |
95 | return 0; | |
96 | } | |
97 | ||
98 | void ttm_mem_io_free(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem) | |
99 | { | |
100 | if (bdev->driver->io_mem_reserve) { | |
101 | if (mem->bus.io_reserved) { | |
102 | mem->bus.io_reserved = false; | |
103 | bdev->driver->io_mem_free(bdev, mem); | |
104 | } | |
105 | } | |
106 | } | |
107 | ||
ba4e7d97 TH |
108 | int ttm_mem_reg_ioremap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem, |
109 | void **virtual) | |
110 | { | |
ba4e7d97 TH |
111 | int ret; |
112 | void *addr; | |
113 | ||
114 | *virtual = NULL; | |
82c5da6b | 115 | ret = ttm_mem_io_reserve(bdev, mem); |
9e51159c | 116 | if (ret || !mem->bus.is_iomem) |
ba4e7d97 TH |
117 | return ret; |
118 | ||
82c5da6b JG |
119 | if (mem->bus.addr) { |
120 | addr = mem->bus.addr; | |
121 | } else { | |
ba4e7d97 | 122 | if (mem->placement & TTM_PL_FLAG_WC) |
82c5da6b | 123 | addr = ioremap_wc(mem->bus.base + mem->bus.offset, mem->bus.size); |
ba4e7d97 | 124 | else |
82c5da6b JG |
125 | addr = ioremap_nocache(mem->bus.base + mem->bus.offset, mem->bus.size); |
126 | if (!addr) { | |
127 | ttm_mem_io_free(bdev, mem); | |
ba4e7d97 | 128 | return -ENOMEM; |
82c5da6b | 129 | } |
ba4e7d97 TH |
130 | } |
131 | *virtual = addr; | |
132 | return 0; | |
133 | } | |
134 | ||
135 | void ttm_mem_reg_iounmap(struct ttm_bo_device *bdev, struct ttm_mem_reg *mem, | |
136 | void *virtual) | |
137 | { | |
138 | struct ttm_mem_type_manager *man; | |
139 | ||
140 | man = &bdev->man[mem->mem_type]; | |
141 | ||
0c321c79 | 142 | if (virtual && mem->bus.addr == NULL) |
ba4e7d97 | 143 | iounmap(virtual); |
82c5da6b | 144 | ttm_mem_io_free(bdev, mem); |
ba4e7d97 TH |
145 | } |
146 | ||
147 | static int ttm_copy_io_page(void *dst, void *src, unsigned long page) | |
148 | { | |
149 | uint32_t *dstP = | |
150 | (uint32_t *) ((unsigned long)dst + (page << PAGE_SHIFT)); | |
151 | uint32_t *srcP = | |
152 | (uint32_t *) ((unsigned long)src + (page << PAGE_SHIFT)); | |
153 | ||
154 | int i; | |
155 | for (i = 0; i < PAGE_SIZE / sizeof(uint32_t); ++i) | |
156 | iowrite32(ioread32(srcP++), dstP++); | |
157 | return 0; | |
158 | } | |
159 | ||
160 | static int ttm_copy_io_ttm_page(struct ttm_tt *ttm, void *src, | |
542c6f6d TH |
161 | unsigned long page, |
162 | pgprot_t prot) | |
ba4e7d97 TH |
163 | { |
164 | struct page *d = ttm_tt_get_page(ttm, page); | |
165 | void *dst; | |
166 | ||
167 | if (!d) | |
168 | return -ENOMEM; | |
169 | ||
170 | src = (void *)((unsigned long)src + (page << PAGE_SHIFT)); | |
542c6f6d TH |
171 | |
172 | #ifdef CONFIG_X86 | |
173 | dst = kmap_atomic_prot(d, KM_USER0, prot); | |
174 | #else | |
6d0897ba | 175 | if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) |
542c6f6d TH |
176 | dst = vmap(&d, 1, 0, prot); |
177 | else | |
178 | dst = kmap(d); | |
179 | #endif | |
ba4e7d97 TH |
180 | if (!dst) |
181 | return -ENOMEM; | |
182 | ||
183 | memcpy_fromio(dst, src, PAGE_SIZE); | |
542c6f6d TH |
184 | |
185 | #ifdef CONFIG_X86 | |
186 | kunmap_atomic(dst, KM_USER0); | |
187 | #else | |
6d0897ba | 188 | if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) |
542c6f6d TH |
189 | vunmap(dst); |
190 | else | |
191 | kunmap(d); | |
192 | #endif | |
193 | ||
ba4e7d97 TH |
194 | return 0; |
195 | } | |
196 | ||
197 | static int ttm_copy_ttm_io_page(struct ttm_tt *ttm, void *dst, | |
542c6f6d TH |
198 | unsigned long page, |
199 | pgprot_t prot) | |
ba4e7d97 TH |
200 | { |
201 | struct page *s = ttm_tt_get_page(ttm, page); | |
202 | void *src; | |
203 | ||
204 | if (!s) | |
205 | return -ENOMEM; | |
206 | ||
207 | dst = (void *)((unsigned long)dst + (page << PAGE_SHIFT)); | |
542c6f6d TH |
208 | #ifdef CONFIG_X86 |
209 | src = kmap_atomic_prot(s, KM_USER0, prot); | |
210 | #else | |
6d0897ba | 211 | if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) |
542c6f6d TH |
212 | src = vmap(&s, 1, 0, prot); |
213 | else | |
214 | src = kmap(s); | |
215 | #endif | |
ba4e7d97 TH |
216 | if (!src) |
217 | return -ENOMEM; | |
218 | ||
219 | memcpy_toio(dst, src, PAGE_SIZE); | |
542c6f6d TH |
220 | |
221 | #ifdef CONFIG_X86 | |
222 | kunmap_atomic(src, KM_USER0); | |
223 | #else | |
6d0897ba | 224 | if (pgprot_val(prot) != pgprot_val(PAGE_KERNEL)) |
542c6f6d TH |
225 | vunmap(src); |
226 | else | |
227 | kunmap(s); | |
228 | #endif | |
229 | ||
ba4e7d97 TH |
230 | return 0; |
231 | } | |
232 | ||
233 | int ttm_bo_move_memcpy(struct ttm_buffer_object *bo, | |
9d87fa21 JG |
234 | bool evict, bool no_wait_reserve, bool no_wait_gpu, |
235 | struct ttm_mem_reg *new_mem) | |
ba4e7d97 TH |
236 | { |
237 | struct ttm_bo_device *bdev = bo->bdev; | |
238 | struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type]; | |
239 | struct ttm_tt *ttm = bo->ttm; | |
240 | struct ttm_mem_reg *old_mem = &bo->mem; | |
241 | struct ttm_mem_reg old_copy = *old_mem; | |
242 | void *old_iomap; | |
243 | void *new_iomap; | |
244 | int ret; | |
ba4e7d97 TH |
245 | unsigned long i; |
246 | unsigned long page; | |
247 | unsigned long add = 0; | |
248 | int dir; | |
249 | ||
250 | ret = ttm_mem_reg_ioremap(bdev, old_mem, &old_iomap); | |
251 | if (ret) | |
252 | return ret; | |
253 | ret = ttm_mem_reg_ioremap(bdev, new_mem, &new_iomap); | |
254 | if (ret) | |
255 | goto out; | |
256 | ||
257 | if (old_iomap == NULL && new_iomap == NULL) | |
258 | goto out2; | |
259 | if (old_iomap == NULL && ttm == NULL) | |
260 | goto out2; | |
261 | ||
262 | add = 0; | |
263 | dir = 1; | |
264 | ||
265 | if ((old_mem->mem_type == new_mem->mem_type) && | |
266 | (new_mem->mm_node->start < | |
267 | old_mem->mm_node->start + old_mem->mm_node->size)) { | |
268 | dir = -1; | |
269 | add = new_mem->num_pages - 1; | |
270 | } | |
271 | ||
272 | for (i = 0; i < new_mem->num_pages; ++i) { | |
273 | page = i * dir + add; | |
542c6f6d TH |
274 | if (old_iomap == NULL) { |
275 | pgprot_t prot = ttm_io_prot(old_mem->placement, | |
276 | PAGE_KERNEL); | |
277 | ret = ttm_copy_ttm_io_page(ttm, new_iomap, page, | |
278 | prot); | |
279 | } else if (new_iomap == NULL) { | |
280 | pgprot_t prot = ttm_io_prot(new_mem->placement, | |
281 | PAGE_KERNEL); | |
282 | ret = ttm_copy_io_ttm_page(ttm, old_iomap, page, | |
283 | prot); | |
284 | } else | |
ba4e7d97 TH |
285 | ret = ttm_copy_io_page(new_iomap, old_iomap, page); |
286 | if (ret) | |
287 | goto out1; | |
288 | } | |
289 | mb(); | |
290 | out2: | |
291 | ttm_bo_free_old_node(bo); | |
292 | ||
293 | *old_mem = *new_mem; | |
294 | new_mem->mm_node = NULL; | |
ba4e7d97 TH |
295 | |
296 | if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && (ttm != NULL)) { | |
297 | ttm_tt_unbind(ttm); | |
298 | ttm_tt_destroy(ttm); | |
299 | bo->ttm = NULL; | |
300 | } | |
301 | ||
302 | out1: | |
303 | ttm_mem_reg_iounmap(bdev, new_mem, new_iomap); | |
304 | out: | |
305 | ttm_mem_reg_iounmap(bdev, &old_copy, old_iomap); | |
306 | return ret; | |
307 | } | |
308 | EXPORT_SYMBOL(ttm_bo_move_memcpy); | |
309 | ||
310 | static void ttm_transfered_destroy(struct ttm_buffer_object *bo) | |
311 | { | |
312 | kfree(bo); | |
313 | } | |
314 | ||
315 | /** | |
316 | * ttm_buffer_object_transfer | |
317 | * | |
318 | * @bo: A pointer to a struct ttm_buffer_object. | |
319 | * @new_obj: A pointer to a pointer to a newly created ttm_buffer_object, | |
320 | * holding the data of @bo with the old placement. | |
321 | * | |
322 | * This is a utility function that may be called after an accelerated move | |
323 | * has been scheduled. A new buffer object is created as a placeholder for | |
324 | * the old data while it's being copied. When that buffer object is idle, | |
325 | * it can be destroyed, releasing the space of the old placement. | |
326 | * Returns: | |
327 | * !0: Failure. | |
328 | */ | |
329 | ||
330 | static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo, | |
331 | struct ttm_buffer_object **new_obj) | |
332 | { | |
333 | struct ttm_buffer_object *fbo; | |
334 | struct ttm_bo_device *bdev = bo->bdev; | |
335 | struct ttm_bo_driver *driver = bdev->driver; | |
336 | ||
337 | fbo = kzalloc(sizeof(*fbo), GFP_KERNEL); | |
338 | if (!fbo) | |
339 | return -ENOMEM; | |
340 | ||
341 | *fbo = *bo; | |
342 | ||
343 | /** | |
344 | * Fix up members that we shouldn't copy directly: | |
345 | * TODO: Explicit member copy would probably be better here. | |
346 | */ | |
347 | ||
348 | spin_lock_init(&fbo->lock); | |
349 | init_waitqueue_head(&fbo->event_queue); | |
350 | INIT_LIST_HEAD(&fbo->ddestroy); | |
351 | INIT_LIST_HEAD(&fbo->lru); | |
352 | INIT_LIST_HEAD(&fbo->swap); | |
353 | fbo->vm_node = NULL; | |
0fbecd40 | 354 | atomic_set(&fbo->cpu_writers, 0); |
ba4e7d97 TH |
355 | |
356 | fbo->sync_obj = driver->sync_obj_ref(bo->sync_obj); | |
ba4e7d97 TH |
357 | kref_init(&fbo->list_kref); |
358 | kref_init(&fbo->kref); | |
359 | fbo->destroy = &ttm_transfered_destroy; | |
360 | ||
361 | *new_obj = fbo; | |
362 | return 0; | |
363 | } | |
364 | ||
365 | pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp) | |
366 | { | |
367 | #if defined(__i386__) || defined(__x86_64__) | |
368 | if (caching_flags & TTM_PL_FLAG_WC) | |
369 | tmp = pgprot_writecombine(tmp); | |
370 | else if (boot_cpu_data.x86 > 3) | |
371 | tmp = pgprot_noncached(tmp); | |
372 | ||
373 | #elif defined(__powerpc__) | |
374 | if (!(caching_flags & TTM_PL_FLAG_CACHED)) { | |
375 | pgprot_val(tmp) |= _PAGE_NO_CACHE; | |
376 | if (caching_flags & TTM_PL_FLAG_UNCACHED) | |
377 | pgprot_val(tmp) |= _PAGE_GUARDED; | |
378 | } | |
379 | #endif | |
380 | #if defined(__ia64__) | |
381 | if (caching_flags & TTM_PL_FLAG_WC) | |
382 | tmp = pgprot_writecombine(tmp); | |
383 | else | |
384 | tmp = pgprot_noncached(tmp); | |
385 | #endif | |
386 | #if defined(__sparc__) | |
387 | if (!(caching_flags & TTM_PL_FLAG_CACHED)) | |
388 | tmp = pgprot_noncached(tmp); | |
389 | #endif | |
390 | return tmp; | |
391 | } | |
4bfd75cb | 392 | EXPORT_SYMBOL(ttm_io_prot); |
ba4e7d97 TH |
393 | |
394 | static int ttm_bo_ioremap(struct ttm_buffer_object *bo, | |
82c5da6b JG |
395 | unsigned long offset, |
396 | unsigned long size, | |
ba4e7d97 TH |
397 | struct ttm_bo_kmap_obj *map) |
398 | { | |
ba4e7d97 | 399 | struct ttm_mem_reg *mem = &bo->mem; |
ba4e7d97 | 400 | |
82c5da6b | 401 | if (bo->mem.bus.addr) { |
ba4e7d97 | 402 | map->bo_kmap_type = ttm_bo_map_premapped; |
82c5da6b | 403 | map->virtual = (void *)(((u8 *)bo->mem.bus.addr) + offset); |
ba4e7d97 TH |
404 | } else { |
405 | map->bo_kmap_type = ttm_bo_map_iomap; | |
406 | if (mem->placement & TTM_PL_FLAG_WC) | |
82c5da6b JG |
407 | map->virtual = ioremap_wc(bo->mem.bus.base + bo->mem.bus.offset + offset, |
408 | size); | |
ba4e7d97 | 409 | else |
82c5da6b JG |
410 | map->virtual = ioremap_nocache(bo->mem.bus.base + bo->mem.bus.offset + offset, |
411 | size); | |
ba4e7d97 TH |
412 | } |
413 | return (!map->virtual) ? -ENOMEM : 0; | |
414 | } | |
415 | ||
416 | static int ttm_bo_kmap_ttm(struct ttm_buffer_object *bo, | |
417 | unsigned long start_page, | |
418 | unsigned long num_pages, | |
419 | struct ttm_bo_kmap_obj *map) | |
420 | { | |
421 | struct ttm_mem_reg *mem = &bo->mem; pgprot_t prot; | |
422 | struct ttm_tt *ttm = bo->ttm; | |
423 | struct page *d; | |
424 | int i; | |
425 | ||
426 | BUG_ON(!ttm); | |
427 | if (num_pages == 1 && (mem->placement & TTM_PL_FLAG_CACHED)) { | |
428 | /* | |
429 | * We're mapping a single page, and the desired | |
430 | * page protection is consistent with the bo. | |
431 | */ | |
432 | ||
433 | map->bo_kmap_type = ttm_bo_map_kmap; | |
434 | map->page = ttm_tt_get_page(ttm, start_page); | |
435 | map->virtual = kmap(map->page); | |
436 | } else { | |
437 | /* | |
438 | * Populate the part we're mapping; | |
439 | */ | |
440 | for (i = start_page; i < start_page + num_pages; ++i) { | |
441 | d = ttm_tt_get_page(ttm, i); | |
442 | if (!d) | |
443 | return -ENOMEM; | |
444 | } | |
445 | ||
446 | /* | |
447 | * We need to use vmap to get the desired page protection | |
af901ca1 | 448 | * or to make the buffer object look contiguous. |
ba4e7d97 TH |
449 | */ |
450 | prot = (mem->placement & TTM_PL_FLAG_CACHED) ? | |
451 | PAGE_KERNEL : | |
452 | ttm_io_prot(mem->placement, PAGE_KERNEL); | |
453 | map->bo_kmap_type = ttm_bo_map_vmap; | |
454 | map->virtual = vmap(ttm->pages + start_page, num_pages, | |
455 | 0, prot); | |
456 | } | |
457 | return (!map->virtual) ? -ENOMEM : 0; | |
458 | } | |
459 | ||
460 | int ttm_bo_kmap(struct ttm_buffer_object *bo, | |
461 | unsigned long start_page, unsigned long num_pages, | |
462 | struct ttm_bo_kmap_obj *map) | |
463 | { | |
82c5da6b | 464 | unsigned long offset, size; |
ba4e7d97 | 465 | int ret; |
ba4e7d97 TH |
466 | |
467 | BUG_ON(!list_empty(&bo->swap)); | |
468 | map->virtual = NULL; | |
82c5da6b | 469 | map->bo = bo; |
ba4e7d97 TH |
470 | if (num_pages > bo->num_pages) |
471 | return -EINVAL; | |
472 | if (start_page > bo->num_pages) | |
473 | return -EINVAL; | |
474 | #if 0 | |
475 | if (num_pages > 1 && !DRM_SUSER(DRM_CURPROC)) | |
476 | return -EPERM; | |
477 | #endif | |
82c5da6b | 478 | ret = ttm_mem_io_reserve(bo->bdev, &bo->mem); |
ba4e7d97 TH |
479 | if (ret) |
480 | return ret; | |
82c5da6b | 481 | if (!bo->mem.bus.is_iomem) { |
ba4e7d97 TH |
482 | return ttm_bo_kmap_ttm(bo, start_page, num_pages, map); |
483 | } else { | |
82c5da6b JG |
484 | offset = start_page << PAGE_SHIFT; |
485 | size = num_pages << PAGE_SHIFT; | |
486 | return ttm_bo_ioremap(bo, offset, size, map); | |
ba4e7d97 TH |
487 | } |
488 | } | |
489 | EXPORT_SYMBOL(ttm_bo_kmap); | |
490 | ||
491 | void ttm_bo_kunmap(struct ttm_bo_kmap_obj *map) | |
492 | { | |
493 | if (!map->virtual) | |
494 | return; | |
495 | switch (map->bo_kmap_type) { | |
496 | case ttm_bo_map_iomap: | |
497 | iounmap(map->virtual); | |
82c5da6b | 498 | ttm_mem_io_free(map->bo->bdev, &map->bo->mem); |
ba4e7d97 TH |
499 | break; |
500 | case ttm_bo_map_vmap: | |
501 | vunmap(map->virtual); | |
502 | break; | |
503 | case ttm_bo_map_kmap: | |
504 | kunmap(map->page); | |
505 | break; | |
506 | case ttm_bo_map_premapped: | |
507 | break; | |
508 | default: | |
509 | BUG(); | |
510 | } | |
511 | map->virtual = NULL; | |
512 | map->page = NULL; | |
513 | } | |
514 | EXPORT_SYMBOL(ttm_bo_kunmap); | |
515 | ||
ba4e7d97 TH |
516 | int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo, |
517 | void *sync_obj, | |
518 | void *sync_obj_arg, | |
9d87fa21 JG |
519 | bool evict, bool no_wait_reserve, |
520 | bool no_wait_gpu, | |
ba4e7d97 TH |
521 | struct ttm_mem_reg *new_mem) |
522 | { | |
523 | struct ttm_bo_device *bdev = bo->bdev; | |
524 | struct ttm_bo_driver *driver = bdev->driver; | |
525 | struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type]; | |
526 | struct ttm_mem_reg *old_mem = &bo->mem; | |
527 | int ret; | |
ba4e7d97 TH |
528 | struct ttm_buffer_object *ghost_obj; |
529 | void *tmp_obj = NULL; | |
530 | ||
531 | spin_lock(&bo->lock); | |
532 | if (bo->sync_obj) { | |
533 | tmp_obj = bo->sync_obj; | |
534 | bo->sync_obj = NULL; | |
535 | } | |
536 | bo->sync_obj = driver->sync_obj_ref(sync_obj); | |
537 | bo->sync_obj_arg = sync_obj_arg; | |
538 | if (evict) { | |
539 | ret = ttm_bo_wait(bo, false, false, false); | |
540 | spin_unlock(&bo->lock); | |
4677f15c TH |
541 | if (tmp_obj) |
542 | driver->sync_obj_unref(&tmp_obj); | |
ba4e7d97 TH |
543 | if (ret) |
544 | return ret; | |
545 | ||
546 | ttm_bo_free_old_node(bo); | |
547 | if ((man->flags & TTM_MEMTYPE_FLAG_FIXED) && | |
548 | (bo->ttm != NULL)) { | |
549 | ttm_tt_unbind(bo->ttm); | |
550 | ttm_tt_destroy(bo->ttm); | |
551 | bo->ttm = NULL; | |
552 | } | |
553 | } else { | |
554 | /** | |
555 | * This should help pipeline ordinary buffer moves. | |
556 | * | |
557 | * Hang old buffer memory on a new buffer object, | |
558 | * and leave it to be released when the GPU | |
559 | * operation has completed. | |
560 | */ | |
561 | ||
562 | set_bit(TTM_BO_PRIV_FLAG_MOVING, &bo->priv_flags); | |
563 | spin_unlock(&bo->lock); | |
4677f15c TH |
564 | if (tmp_obj) |
565 | driver->sync_obj_unref(&tmp_obj); | |
ba4e7d97 TH |
566 | |
567 | ret = ttm_buffer_object_transfer(bo, &ghost_obj); | |
568 | if (ret) | |
569 | return ret; | |
570 | ||
571 | /** | |
572 | * If we're not moving to fixed memory, the TTM object | |
573 | * needs to stay alive. Otherwhise hang it on the ghost | |
574 | * bo to be unbound and destroyed. | |
575 | */ | |
576 | ||
577 | if (!(man->flags & TTM_MEMTYPE_FLAG_FIXED)) | |
578 | ghost_obj->ttm = NULL; | |
579 | else | |
580 | bo->ttm = NULL; | |
581 | ||
582 | ttm_bo_unreserve(ghost_obj); | |
583 | ttm_bo_unref(&ghost_obj); | |
584 | } | |
585 | ||
586 | *old_mem = *new_mem; | |
587 | new_mem->mm_node = NULL; | |
110b20c3 | 588 | |
ba4e7d97 TH |
589 | return 0; |
590 | } | |
591 | EXPORT_SYMBOL(ttm_bo_move_accel_cleanup); |