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Commit | Line | Data |
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96f60e37 RK |
1 | /* |
2 | * Copyright (C) 2012 Russell King | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | #include <linux/dma-buf.h> | |
9 | #include <linux/dma-mapping.h> | |
10 | #include <linux/shmem_fs.h> | |
96f60e37 RK |
11 | #include "armada_drm.h" |
12 | #include "armada_gem.h" | |
13 | #include <drm/armada_drm.h> | |
14 | #include "armada_ioctlP.h" | |
15 | ||
7794ec77 | 16 | static vm_fault_t armada_gem_vm_fault(struct vm_fault *vmf) |
96f60e37 | 17 | { |
11bac800 DJ |
18 | struct drm_gem_object *gobj = vmf->vma->vm_private_data; |
19 | struct armada_gem_object *obj = drm_to_armada_gem(gobj); | |
96f60e37 | 20 | unsigned long pfn = obj->phys_addr >> PAGE_SHIFT; |
96f60e37 | 21 | |
11bac800 | 22 | pfn += (vmf->address - vmf->vma->vm_start) >> PAGE_SHIFT; |
7794ec77 | 23 | return vmf_insert_pfn(vmf->vma, vmf->address, pfn); |
96f60e37 RK |
24 | } |
25 | ||
26 | const struct vm_operations_struct armada_gem_vm_ops = { | |
27 | .fault = armada_gem_vm_fault, | |
28 | .open = drm_gem_vm_open, | |
29 | .close = drm_gem_vm_close, | |
30 | }; | |
31 | ||
32 | static size_t roundup_gem_size(size_t size) | |
33 | { | |
34 | return roundup(size, PAGE_SIZE); | |
35 | } | |
36 | ||
96f60e37 RK |
37 | void armada_gem_free_object(struct drm_gem_object *obj) |
38 | { | |
39 | struct armada_gem_object *dobj = drm_to_armada_gem(obj); | |
0b8ebeac | 40 | struct armada_private *priv = obj->dev->dev_private; |
96f60e37 RK |
41 | |
42 | DRM_DEBUG_DRIVER("release obj %p\n", dobj); | |
43 | ||
44 | drm_gem_free_mmap_offset(&dobj->obj); | |
45 | ||
0b8ebeac DV |
46 | might_lock(&priv->linear_lock); |
47 | ||
96f60e37 RK |
48 | if (dobj->page) { |
49 | /* page backed memory */ | |
50 | unsigned int order = get_order(dobj->obj.size); | |
51 | __free_pages(dobj->page, order); | |
52 | } else if (dobj->linear) { | |
53 | /* linear backed memory */ | |
0b8ebeac | 54 | mutex_lock(&priv->linear_lock); |
96f60e37 | 55 | drm_mm_remove_node(dobj->linear); |
0b8ebeac | 56 | mutex_unlock(&priv->linear_lock); |
96f60e37 RK |
57 | kfree(dobj->linear); |
58 | if (dobj->addr) | |
59 | iounmap(dobj->addr); | |
60 | } | |
61 | ||
62 | if (dobj->obj.import_attach) { | |
63 | /* We only ever display imported data */ | |
0481c8c4 RK |
64 | if (dobj->sgt) |
65 | dma_buf_unmap_attachment(dobj->obj.import_attach, | |
66 | dobj->sgt, DMA_TO_DEVICE); | |
96f60e37 RK |
67 | drm_prime_gem_destroy(&dobj->obj, NULL); |
68 | } | |
69 | ||
70 | drm_gem_object_release(&dobj->obj); | |
71 | ||
72 | kfree(dobj); | |
73 | } | |
74 | ||
75 | int | |
76 | armada_gem_linear_back(struct drm_device *dev, struct armada_gem_object *obj) | |
77 | { | |
78 | struct armada_private *priv = dev->dev_private; | |
79 | size_t size = obj->obj.size; | |
80 | ||
81 | if (obj->page || obj->linear) | |
82 | return 0; | |
83 | ||
84 | /* | |
85 | * If it is a small allocation (typically cursor, which will | |
86 | * be 32x64 or 64x32 ARGB pixels) try to get it from the system. | |
87 | * Framebuffers will never be this small (our minimum size for | |
88 | * framebuffers is larger than this anyway.) Such objects are | |
89 | * only accessed by the CPU so we don't need any special handing | |
90 | * here. | |
91 | */ | |
92 | if (size <= 8192) { | |
93 | unsigned int order = get_order(size); | |
94 | struct page *p = alloc_pages(GFP_KERNEL, order); | |
95 | ||
96 | if (p) { | |
97 | obj->addr = page_address(p); | |
98 | obj->phys_addr = page_to_phys(p); | |
99 | obj->page = p; | |
100 | ||
101 | memset(obj->addr, 0, PAGE_ALIGN(size)); | |
102 | } | |
103 | } | |
104 | ||
105 | /* | |
106 | * We could grab something from CMA if it's enabled, but that | |
107 | * involves building in a problem: | |
108 | * | |
109 | * CMA's interface uses dma_alloc_coherent(), which provides us | |
110 | * with an CPU virtual address and a device address. | |
111 | * | |
112 | * The CPU virtual address may be either an address in the kernel | |
113 | * direct mapped region (for example, as it would be on x86) or | |
114 | * it may be remapped into another part of kernel memory space | |
115 | * (eg, as it would be on ARM.) This means virt_to_phys() on the | |
116 | * returned virtual address is invalid depending on the architecture | |
117 | * implementation. | |
118 | * | |
119 | * The device address may also not be a physical address; it may | |
120 | * be that there is some kind of remapping between the device and | |
121 | * system RAM, which makes the use of the device address also | |
122 | * unsafe to re-use as a physical address. | |
123 | * | |
124 | * This makes DRM usage of dma_alloc_coherent() in a generic way | |
125 | * at best very questionable and unsafe. | |
126 | */ | |
127 | ||
128 | /* Otherwise, grab it from our linear allocation */ | |
129 | if (!obj->page) { | |
130 | struct drm_mm_node *node; | |
131 | unsigned align = min_t(unsigned, size, SZ_2M); | |
132 | void __iomem *ptr; | |
133 | int ret; | |
134 | ||
135 | node = kzalloc(sizeof(*node), GFP_KERNEL); | |
136 | if (!node) | |
137 | return -ENOSPC; | |
138 | ||
0b8ebeac | 139 | mutex_lock(&priv->linear_lock); |
4e64e553 CW |
140 | ret = drm_mm_insert_node_generic(&priv->linear, node, |
141 | size, align, 0, 0); | |
0b8ebeac | 142 | mutex_unlock(&priv->linear_lock); |
96f60e37 RK |
143 | if (ret) { |
144 | kfree(node); | |
145 | return ret; | |
146 | } | |
147 | ||
148 | obj->linear = node; | |
149 | ||
150 | /* Ensure that the memory we're returning is cleared. */ | |
151 | ptr = ioremap_wc(obj->linear->start, size); | |
152 | if (!ptr) { | |
0b8ebeac | 153 | mutex_lock(&priv->linear_lock); |
96f60e37 | 154 | drm_mm_remove_node(obj->linear); |
0b8ebeac | 155 | mutex_unlock(&priv->linear_lock); |
96f60e37 RK |
156 | kfree(obj->linear); |
157 | obj->linear = NULL; | |
158 | return -ENOMEM; | |
159 | } | |
160 | ||
161 | memset_io(ptr, 0, size); | |
162 | iounmap(ptr); | |
163 | ||
164 | obj->phys_addr = obj->linear->start; | |
165 | obj->dev_addr = obj->linear->start; | |
b4005857 | 166 | obj->mapped = true; |
96f60e37 RK |
167 | } |
168 | ||
7513e095 RK |
169 | DRM_DEBUG_DRIVER("obj %p phys %#llx dev %#llx\n", obj, |
170 | (unsigned long long)obj->phys_addr, | |
171 | (unsigned long long)obj->dev_addr); | |
96f60e37 RK |
172 | |
173 | return 0; | |
174 | } | |
175 | ||
176 | void * | |
177 | armada_gem_map_object(struct drm_device *dev, struct armada_gem_object *dobj) | |
178 | { | |
179 | /* only linear objects need to be ioremap'd */ | |
180 | if (!dobj->addr && dobj->linear) | |
181 | dobj->addr = ioremap_wc(dobj->phys_addr, dobj->obj.size); | |
182 | return dobj->addr; | |
183 | } | |
184 | ||
185 | struct armada_gem_object * | |
186 | armada_gem_alloc_private_object(struct drm_device *dev, size_t size) | |
187 | { | |
188 | struct armada_gem_object *obj; | |
189 | ||
190 | size = roundup_gem_size(size); | |
191 | ||
192 | obj = kzalloc(sizeof(*obj), GFP_KERNEL); | |
193 | if (!obj) | |
194 | return NULL; | |
195 | ||
196 | drm_gem_private_object_init(dev, &obj->obj, size); | |
96f60e37 RK |
197 | |
198 | DRM_DEBUG_DRIVER("alloc private obj %p size %zu\n", obj, size); | |
199 | ||
200 | return obj; | |
201 | } | |
202 | ||
42b45459 | 203 | static struct armada_gem_object *armada_gem_alloc_object(struct drm_device *dev, |
96f60e37 RK |
204 | size_t size) |
205 | { | |
206 | struct armada_gem_object *obj; | |
207 | struct address_space *mapping; | |
208 | ||
209 | size = roundup_gem_size(size); | |
210 | ||
211 | obj = kzalloc(sizeof(*obj), GFP_KERNEL); | |
212 | if (!obj) | |
213 | return NULL; | |
214 | ||
215 | if (drm_gem_object_init(dev, &obj->obj, size)) { | |
216 | kfree(obj); | |
217 | return NULL; | |
218 | } | |
219 | ||
93c76a3d | 220 | mapping = obj->obj.filp->f_mapping; |
96f60e37 RK |
221 | mapping_set_gfp_mask(mapping, GFP_HIGHUSER | __GFP_RECLAIMABLE); |
222 | ||
223 | DRM_DEBUG_DRIVER("alloc obj %p size %zu\n", obj, size); | |
224 | ||
225 | return obj; | |
226 | } | |
227 | ||
228 | /* Dumb alloc support */ | |
229 | int armada_gem_dumb_create(struct drm_file *file, struct drm_device *dev, | |
230 | struct drm_mode_create_dumb *args) | |
231 | { | |
232 | struct armada_gem_object *dobj; | |
233 | u32 handle; | |
234 | size_t size; | |
235 | int ret; | |
236 | ||
237 | args->pitch = armada_pitch(args->width, args->bpp); | |
238 | args->size = size = args->pitch * args->height; | |
239 | ||
240 | dobj = armada_gem_alloc_private_object(dev, size); | |
241 | if (dobj == NULL) | |
242 | return -ENOMEM; | |
243 | ||
244 | ret = armada_gem_linear_back(dev, dobj); | |
245 | if (ret) | |
246 | goto err; | |
247 | ||
248 | ret = drm_gem_handle_create(file, &dobj->obj, &handle); | |
249 | if (ret) | |
250 | goto err; | |
251 | ||
252 | args->handle = handle; | |
253 | ||
254 | /* drop reference from allocate - handle holds it now */ | |
255 | DRM_DEBUG_DRIVER("obj %p size %zu handle %#x\n", dobj, size, handle); | |
256 | err: | |
4c3cf375 | 257 | drm_gem_object_put_unlocked(&dobj->obj); |
96f60e37 RK |
258 | return ret; |
259 | } | |
260 | ||
96f60e37 RK |
261 | /* Private driver gem ioctls */ |
262 | int armada_gem_create_ioctl(struct drm_device *dev, void *data, | |
263 | struct drm_file *file) | |
264 | { | |
265 | struct drm_armada_gem_create *args = data; | |
266 | struct armada_gem_object *dobj; | |
267 | size_t size; | |
268 | u32 handle; | |
269 | int ret; | |
270 | ||
271 | if (args->size == 0) | |
272 | return -ENOMEM; | |
273 | ||
274 | size = args->size; | |
275 | ||
276 | dobj = armada_gem_alloc_object(dev, size); | |
277 | if (dobj == NULL) | |
278 | return -ENOMEM; | |
279 | ||
280 | ret = drm_gem_handle_create(file, &dobj->obj, &handle); | |
281 | if (ret) | |
282 | goto err; | |
283 | ||
284 | args->handle = handle; | |
285 | ||
286 | /* drop reference from allocate - handle holds it now */ | |
287 | DRM_DEBUG_DRIVER("obj %p size %zu handle %#x\n", dobj, size, handle); | |
288 | err: | |
4c3cf375 | 289 | drm_gem_object_put_unlocked(&dobj->obj); |
96f60e37 RK |
290 | return ret; |
291 | } | |
292 | ||
293 | /* Map a shmem-backed object into process memory space */ | |
294 | int armada_gem_mmap_ioctl(struct drm_device *dev, void *data, | |
295 | struct drm_file *file) | |
296 | { | |
297 | struct drm_armada_gem_mmap *args = data; | |
298 | struct armada_gem_object *dobj; | |
299 | unsigned long addr; | |
300 | ||
a8ad0bd8 | 301 | dobj = armada_gem_object_lookup(file, args->handle); |
96f60e37 RK |
302 | if (dobj == NULL) |
303 | return -ENOENT; | |
304 | ||
305 | if (!dobj->obj.filp) { | |
4c3cf375 | 306 | drm_gem_object_put_unlocked(&dobj->obj); |
96f60e37 RK |
307 | return -EINVAL; |
308 | } | |
309 | ||
310 | addr = vm_mmap(dobj->obj.filp, 0, args->size, PROT_READ | PROT_WRITE, | |
311 | MAP_SHARED, args->offset); | |
4c3cf375 | 312 | drm_gem_object_put_unlocked(&dobj->obj); |
96f60e37 RK |
313 | if (IS_ERR_VALUE(addr)) |
314 | return addr; | |
315 | ||
316 | args->addr = addr; | |
317 | ||
318 | return 0; | |
319 | } | |
320 | ||
321 | int armada_gem_pwrite_ioctl(struct drm_device *dev, void *data, | |
322 | struct drm_file *file) | |
323 | { | |
324 | struct drm_armada_gem_pwrite *args = data; | |
325 | struct armada_gem_object *dobj; | |
326 | char __user *ptr; | |
327 | int ret; | |
328 | ||
329 | DRM_DEBUG_DRIVER("handle %u off %u size %u ptr 0x%llx\n", | |
330 | args->handle, args->offset, args->size, args->ptr); | |
331 | ||
332 | if (args->size == 0) | |
333 | return 0; | |
334 | ||
335 | ptr = (char __user *)(uintptr_t)args->ptr; | |
336 | ||
96d4f267 | 337 | if (!access_ok(ptr, args->size)) |
96f60e37 RK |
338 | return -EFAULT; |
339 | ||
4bce9f6e | 340 | ret = fault_in_pages_readable(ptr, args->size); |
96f60e37 RK |
341 | if (ret) |
342 | return ret; | |
343 | ||
a8ad0bd8 | 344 | dobj = armada_gem_object_lookup(file, args->handle); |
96f60e37 RK |
345 | if (dobj == NULL) |
346 | return -ENOENT; | |
347 | ||
348 | /* Must be a kernel-mapped object */ | |
349 | if (!dobj->addr) | |
350 | return -EINVAL; | |
351 | ||
352 | if (args->offset > dobj->obj.size || | |
353 | args->size > dobj->obj.size - args->offset) { | |
354 | DRM_ERROR("invalid size: object size %u\n", dobj->obj.size); | |
355 | ret = -EINVAL; | |
356 | goto unref; | |
357 | } | |
358 | ||
359 | if (copy_from_user(dobj->addr + args->offset, ptr, args->size)) { | |
360 | ret = -EFAULT; | |
361 | } else if (dobj->update) { | |
362 | dobj->update(dobj->update_data); | |
363 | ret = 0; | |
364 | } | |
365 | ||
366 | unref: | |
4c3cf375 | 367 | drm_gem_object_put_unlocked(&dobj->obj); |
96f60e37 RK |
368 | return ret; |
369 | } | |
370 | ||
371 | /* Prime support */ | |
42b45459 | 372 | static struct sg_table * |
96f60e37 RK |
373 | armada_gem_prime_map_dma_buf(struct dma_buf_attachment *attach, |
374 | enum dma_data_direction dir) | |
375 | { | |
376 | struct drm_gem_object *obj = attach->dmabuf->priv; | |
377 | struct armada_gem_object *dobj = drm_to_armada_gem(obj); | |
378 | struct scatterlist *sg; | |
379 | struct sg_table *sgt; | |
380 | int i, num; | |
381 | ||
382 | sgt = kmalloc(sizeof(*sgt), GFP_KERNEL); | |
383 | if (!sgt) | |
384 | return NULL; | |
385 | ||
386 | if (dobj->obj.filp) { | |
387 | struct address_space *mapping; | |
96f60e37 RK |
388 | int count; |
389 | ||
390 | count = dobj->obj.size / PAGE_SIZE; | |
391 | if (sg_alloc_table(sgt, count, GFP_KERNEL)) | |
392 | goto free_sgt; | |
393 | ||
93c76a3d | 394 | mapping = dobj->obj.filp->f_mapping; |
96f60e37 RK |
395 | |
396 | for_each_sg(sgt->sgl, sg, count, i) { | |
397 | struct page *page; | |
398 | ||
2524fc7f | 399 | page = shmem_read_mapping_page(mapping, i); |
96f60e37 RK |
400 | if (IS_ERR(page)) { |
401 | num = i; | |
402 | goto release; | |
403 | } | |
404 | ||
405 | sg_set_page(sg, page, PAGE_SIZE, 0); | |
406 | } | |
407 | ||
408 | if (dma_map_sg(attach->dev, sgt->sgl, sgt->nents, dir) == 0) { | |
409 | num = sgt->nents; | |
410 | goto release; | |
411 | } | |
412 | } else if (dobj->page) { | |
413 | /* Single contiguous page */ | |
414 | if (sg_alloc_table(sgt, 1, GFP_KERNEL)) | |
415 | goto free_sgt; | |
416 | ||
417 | sg_set_page(sgt->sgl, dobj->page, dobj->obj.size, 0); | |
418 | ||
419 | if (dma_map_sg(attach->dev, sgt->sgl, sgt->nents, dir) == 0) | |
420 | goto free_table; | |
421 | } else if (dobj->linear) { | |
422 | /* Single contiguous physical region - no struct page */ | |
423 | if (sg_alloc_table(sgt, 1, GFP_KERNEL)) | |
424 | goto free_sgt; | |
425 | sg_dma_address(sgt->sgl) = dobj->dev_addr; | |
426 | sg_dma_len(sgt->sgl) = dobj->obj.size; | |
427 | } else { | |
428 | goto free_sgt; | |
429 | } | |
430 | return sgt; | |
431 | ||
432 | release: | |
433 | for_each_sg(sgt->sgl, sg, num, i) | |
09cbfeaf | 434 | put_page(sg_page(sg)); |
96f60e37 RK |
435 | free_table: |
436 | sg_free_table(sgt); | |
437 | free_sgt: | |
438 | kfree(sgt); | |
439 | return NULL; | |
440 | } | |
441 | ||
442 | static void armada_gem_prime_unmap_dma_buf(struct dma_buf_attachment *attach, | |
443 | struct sg_table *sgt, enum dma_data_direction dir) | |
444 | { | |
445 | struct drm_gem_object *obj = attach->dmabuf->priv; | |
446 | struct armada_gem_object *dobj = drm_to_armada_gem(obj); | |
447 | int i; | |
448 | ||
449 | if (!dobj->linear) | |
450 | dma_unmap_sg(attach->dev, sgt->sgl, sgt->nents, dir); | |
451 | ||
452 | if (dobj->obj.filp) { | |
453 | struct scatterlist *sg; | |
454 | for_each_sg(sgt->sgl, sg, sgt->nents, i) | |
09cbfeaf | 455 | put_page(sg_page(sg)); |
96f60e37 RK |
456 | } |
457 | ||
458 | sg_free_table(sgt); | |
459 | kfree(sgt); | |
460 | } | |
461 | ||
462 | static void *armada_gem_dmabuf_no_kmap(struct dma_buf *buf, unsigned long n) | |
463 | { | |
464 | return NULL; | |
465 | } | |
466 | ||
467 | static void | |
468 | armada_gem_dmabuf_no_kunmap(struct dma_buf *buf, unsigned long n, void *addr) | |
469 | { | |
470 | } | |
471 | ||
472 | static int | |
473 | armada_gem_dmabuf_mmap(struct dma_buf *buf, struct vm_area_struct *vma) | |
474 | { | |
475 | return -EINVAL; | |
476 | } | |
477 | ||
478 | static const struct dma_buf_ops armada_gem_prime_dmabuf_ops = { | |
479 | .map_dma_buf = armada_gem_prime_map_dma_buf, | |
480 | .unmap_dma_buf = armada_gem_prime_unmap_dma_buf, | |
481 | .release = drm_gem_dmabuf_release, | |
f9b67f00 LG |
482 | .map = armada_gem_dmabuf_no_kmap, |
483 | .unmap = armada_gem_dmabuf_no_kunmap, | |
96f60e37 RK |
484 | .mmap = armada_gem_dmabuf_mmap, |
485 | }; | |
486 | ||
487 | struct dma_buf * | |
e4fa8457 | 488 | armada_gem_prime_export(struct drm_gem_object *obj, int flags) |
96f60e37 | 489 | { |
d8fbe341 SS |
490 | DEFINE_DMA_BUF_EXPORT_INFO(exp_info); |
491 | ||
492 | exp_info.ops = &armada_gem_prime_dmabuf_ops; | |
493 | exp_info.size = obj->size; | |
494 | exp_info.flags = O_RDWR; | |
495 | exp_info.priv = obj; | |
496 | ||
e4fa8457 | 497 | return drm_gem_dmabuf_export(obj->dev, &exp_info); |
96f60e37 RK |
498 | } |
499 | ||
500 | struct drm_gem_object * | |
501 | armada_gem_prime_import(struct drm_device *dev, struct dma_buf *buf) | |
502 | { | |
503 | struct dma_buf_attachment *attach; | |
504 | struct armada_gem_object *dobj; | |
505 | ||
506 | if (buf->ops == &armada_gem_prime_dmabuf_ops) { | |
507 | struct drm_gem_object *obj = buf->priv; | |
508 | if (obj->dev == dev) { | |
509 | /* | |
510 | * Importing our own dmabuf(s) increases the | |
511 | * refcount on the gem object itself. | |
512 | */ | |
4c3cf375 | 513 | drm_gem_object_get(obj); |
96f60e37 RK |
514 | return obj; |
515 | } | |
516 | } | |
517 | ||
518 | attach = dma_buf_attach(buf, dev->dev); | |
519 | if (IS_ERR(attach)) | |
520 | return ERR_CAST(attach); | |
521 | ||
522 | dobj = armada_gem_alloc_private_object(dev, buf->size); | |
523 | if (!dobj) { | |
524 | dma_buf_detach(buf, attach); | |
525 | return ERR_PTR(-ENOMEM); | |
526 | } | |
527 | ||
528 | dobj->obj.import_attach = attach; | |
5cd52688 | 529 | get_dma_buf(buf); |
96f60e37 RK |
530 | |
531 | /* | |
532 | * Don't call dma_buf_map_attachment() here - it maps the | |
533 | * scatterlist immediately for DMA, and this is not always | |
534 | * an appropriate thing to do. | |
535 | */ | |
536 | return &dobj->obj; | |
537 | } | |
538 | ||
539 | int armada_gem_map_import(struct armada_gem_object *dobj) | |
540 | { | |
541 | int ret; | |
542 | ||
543 | dobj->sgt = dma_buf_map_attachment(dobj->obj.import_attach, | |
244a2419 | 544 | DMA_TO_DEVICE); |
96f60e37 RK |
545 | if (IS_ERR(dobj->sgt)) { |
546 | ret = PTR_ERR(dobj->sgt); | |
547 | dobj->sgt = NULL; | |
548 | DRM_ERROR("dma_buf_map_attachment() error: %d\n", ret); | |
549 | return ret; | |
550 | } | |
551 | if (dobj->sgt->nents > 1) { | |
552 | DRM_ERROR("dma_buf_map_attachment() returned an (unsupported) scattered list\n"); | |
553 | return -EINVAL; | |
554 | } | |
555 | if (sg_dma_len(dobj->sgt->sgl) < dobj->obj.size) { | |
556 | DRM_ERROR("dma_buf_map_attachment() returned a small buffer\n"); | |
557 | return -EINVAL; | |
558 | } | |
559 | dobj->dev_addr = sg_dma_address(dobj->sgt->sgl); | |
b4005857 | 560 | dobj->mapped = true; |
96f60e37 RK |
561 | return 0; |
562 | } |