1 /*-
2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice unmodified, this list of conditions, and the following
13 * disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29 #ifndef _LINUXKPI_LINUX_DMA_MAPPING_H_
30 #define _LINUXKPI_LINUX_DMA_MAPPING_H_
31
32 #include <linux/types.h>
33 #include <linux/device.h>
34 #include <linux/err.h>
35 #include <linux/scatterlist.h>
36 #include <linux/mm.h>
37 #include <linux/page.h>
38 #include <linux/sizes.h>
39
40 #include <sys/systm.h>
41 #include <sys/malloc.h>
42
43 #include <vm/vm.h>
44 #include <vm/vm_page.h>
45 #include <vm/uma_align_mask.h>
46 #include <vm/pmap.h>
47
48 #include <machine/bus.h>
49
50 #define DMA_ATTR_WRITE_BARRIER (1 << 0)
51 #define DMA_ATTR_WEAK_ORDERING (1 << 1)
52 #define DMA_ATTR_WRITE_COMBINE (1 << 2)
53 #define DMA_ATTR_NON_CONSISTENT (1 << 3)
54 #define DMA_ATTR_NO_KERNEL_MAPPING (1 << 4)
55 #define DMA_ATTR_SKIP_CPU_SYNC (1 << 5)
56 #define DMA_ATTR_FORCE_CONTIGUOUS (1 << 6)
57 #define DMA_ATTR_ALLOC_SINGLE_PAGES (1 << 7)
58 #define DMA_ATTR_NO_WARN (1 << 8)
59 #define DMA_ATTR_PRIVILEGED (1 << 9)
60
61 enum dma_data_direction {
62 DMA_BIDIRECTIONAL = 0,
63 DMA_TO_DEVICE = 1,
64 DMA_FROM_DEVICE = 2,
65 DMA_NONE = 3,
66 };
67
68 struct dma_map_ops {
69 void* (*alloc_coherent)(struct device *dev, size_t size,
70 dma_addr_t *dma_handle, gfp_t gfp);
71 void (*free_coherent)(struct device *dev, size_t size,
72 void *vaddr, dma_addr_t dma_handle);
73 dma_addr_t (*map_page)(struct device *dev, struct page *page,
74 unsigned long offset, size_t size, enum dma_data_direction dir,
75 unsigned long attrs);
76 void (*unmap_page)(struct device *dev, dma_addr_t dma_handle,
77 size_t size, enum dma_data_direction dir, unsigned long attrs);
78 int (*map_sg)(struct device *dev, struct scatterlist *sg,
79 int nents, enum dma_data_direction dir, unsigned long attrs);
80 void (*unmap_sg)(struct device *dev, struct scatterlist *sg, int nents,
81 enum dma_data_direction dir, unsigned long attrs);
82 void (*sync_single_for_cpu)(struct device *dev, dma_addr_t dma_handle,
83 size_t size, enum dma_data_direction dir);
84 void (*sync_single_for_device)(struct device *dev,
85 dma_addr_t dma_handle, size_t size, enum dma_data_direction dir);
86 void (*sync_single_range_for_cpu)(struct device *dev,
87 dma_addr_t dma_handle, unsigned long offset, size_t size,
88 enum dma_data_direction dir);
89 void (*sync_single_range_for_device)(struct device *dev,
90 dma_addr_t dma_handle, unsigned long offset, size_t size,
91 enum dma_data_direction dir);
92 void (*sync_sg_for_cpu)(struct device *dev, struct scatterlist *sg,
93 int nents, enum dma_data_direction dir);
94 void (*sync_sg_for_device)(struct device *dev, struct scatterlist *sg,
95 int nents, enum dma_data_direction dir);
96 int (*mapping_error)(struct device *dev, dma_addr_t dma_addr);
97 int (*dma_supported)(struct device *dev, u64 mask);
98 int is_phys;
99 };
100
101 #define DMA_BIT_MASK(n) ((2ULL << ((n) - 1)) - 1ULL)
102
103 int linux_dma_tag_init(struct device *, u64);
104 int linux_dma_tag_init_coherent(struct device *, u64);
105 void *linux_dma_alloc_coherent(struct device *dev, size_t size,
106 dma_addr_t *dma_handle, gfp_t flag);
107 void *linuxkpi_dmam_alloc_coherent(struct device *dev, size_t size,
108 dma_addr_t *dma_handle, gfp_t flag);
109 void linuxkpi_dmam_free_coherent(struct device *dev, size_t size,
110 void *addr, dma_addr_t dma_handle);
111 void *linuxkpi_dma_alloc_noncoherent(struct device *, size_t, dma_addr_t *,
112 enum dma_data_direction, gfp_t);
113 void linuxkpi_dma_free_noncoherent(struct device *, size_t, void *,
114 dma_addr_t, enum dma_data_direction);
115 void *linuxkpi_dma_alloc_attrs(struct device *, size_t, dma_addr_t *,
116 gfp_t, unsigned long);
117 void linuxkpi_dma_free_attrs(struct device *, size_t, void *,
118 dma_addr_t, unsigned long);
119 dma_addr_t linux_dma_map_phys(struct device *dev, vm_paddr_t phys, size_t len); /* backward compat */
120 dma_addr_t lkpi_dma_map_phys(struct device *, vm_paddr_t, size_t,
121 enum dma_data_direction, unsigned long);
122 void linux_dma_unmap(struct device *dev, dma_addr_t dma_addr, size_t size); /* backward compat */
123 void lkpi_dma_unmap(struct device *, dma_addr_t, size_t,
124 enum dma_data_direction, unsigned long);
125 int linux_dma_map_sg_attrs(struct device *dev, struct scatterlist *sgl,
126 int nents, enum dma_data_direction direction,
127 unsigned long attrs);
128 void linux_dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg,
129 int nents __unused, enum dma_data_direction direction,
130 unsigned long attrs);
131 void linuxkpi_dma_sync(struct device *, dma_addr_t, size_t, bus_dmasync_op_t);
132 void lkpi_dma_sync_sg(struct device *, struct scatterlist *, bus_dmasync_op_t);
133
134 static inline int
dma_supported(struct device * dev,u64 dma_mask)135 dma_supported(struct device *dev, u64 dma_mask)
136 {
137
138 /* XXX busdma takes care of this elsewhere. */
139 return (1);
140 }
141
142 static inline int
dma_set_mask(struct device * dev,u64 dma_mask)143 dma_set_mask(struct device *dev, u64 dma_mask)
144 {
145
146 if (!dev->dma_priv || !dma_supported(dev, dma_mask))
147 return -EIO;
148
149 return (linux_dma_tag_init(dev, dma_mask));
150 }
151
152 static inline int
dma_set_coherent_mask(struct device * dev,u64 dma_mask)153 dma_set_coherent_mask(struct device *dev, u64 dma_mask)
154 {
155
156 if (!dev->dma_priv || !dma_supported(dev, dma_mask))
157 return -EIO;
158
159 return (linux_dma_tag_init_coherent(dev, dma_mask));
160 }
161
162 static inline int
dma_set_mask_and_coherent(struct device * dev,u64 dma_mask)163 dma_set_mask_and_coherent(struct device *dev, u64 dma_mask)
164 {
165 int r;
166
167 r = dma_set_mask(dev, dma_mask);
168 if (r == 0)
169 dma_set_coherent_mask(dev, dma_mask);
170 return (r);
171 }
172
173 static inline void *
dma_alloc_coherent(struct device * dev,size_t size,dma_addr_t * dma_handle,gfp_t flag)174 dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
175 gfp_t flag)
176 {
177 return (linux_dma_alloc_coherent(dev, size, dma_handle, flag));
178 }
179
180 static inline void *
dma_zalloc_coherent(struct device * dev,size_t size,dma_addr_t * dma_handle,gfp_t flag)181 dma_zalloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
182 gfp_t flag)
183 {
184
185 return (dma_alloc_coherent(dev, size, dma_handle, flag | __GFP_ZERO));
186 }
187
188 static inline void *
dmam_alloc_coherent(struct device * dev,size_t size,dma_addr_t * dma_handle,gfp_t flag)189 dmam_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
190 gfp_t flag)
191 {
192
193 return (linuxkpi_dmam_alloc_coherent(dev, size, dma_handle, flag));
194 }
195
196 static inline void
dma_free_coherent(struct device * dev,size_t size,void * cpu_addr,dma_addr_t dma_addr)197 dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
198 dma_addr_t dma_addr)
199 {
200
201 lkpi_dma_unmap(dev, dma_addr, size, DMA_BIDIRECTIONAL, 0);
202 kmem_free(cpu_addr, size);
203 }
204
205 static inline void
dmam_free_coherent(struct device * dev,size_t size,void * addr,dma_addr_t dma_handle)206 dmam_free_coherent(struct device *dev, size_t size, void *addr,
207 dma_addr_t dma_handle)
208 {
209 linuxkpi_dmam_free_coherent(dev, size, addr, dma_handle);
210 }
211
212 static inline void *
dma_alloc_noncoherent(struct device * dev,size_t size,dma_addr_t * dma_handle,enum dma_data_direction direction,gfp_t gfp)213 dma_alloc_noncoherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
214 enum dma_data_direction direction, gfp_t gfp)
215 {
216 return (linuxkpi_dma_alloc_noncoherent(dev, size, dma_handle, direction, gfp));
217 }
218
219 static inline void
dma_free_noncoherent(struct device * dev,size_t size,void * vaddr,dma_addr_t dma_handle,enum dma_data_direction direction)220 dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
221 dma_addr_t dma_handle, enum dma_data_direction direction)
222 {
223 linuxkpi_dma_free_noncoherent(dev, size, vaddr, dma_handle, direction);
224 }
225
226 static inline void *
dma_alloc_attrs(struct device * dev,size_t size,dma_addr_t * dma_handle,gfp_t gfp,unsigned long attrs)227 dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle,
228 gfp_t gfp, unsigned long attrs)
229 {
230 return (linuxkpi_dma_alloc_attrs(dev, size, dma_handle, gfp, attrs));
231 }
232
233 static inline void
dma_free_attrs(struct device * dev,size_t size,void * vaddr,dma_addr_t dma_handle,unsigned long attrs)234 dma_free_attrs(struct device *dev, size_t size, void *vaddr,
235 dma_addr_t dma_handle, unsigned long attrs)
236 {
237 linuxkpi_dma_free_attrs(dev, size, vaddr, dma_handle, attrs);
238 }
239
240 static inline dma_addr_t
dma_map_page_attrs(struct device * dev,struct page * page,size_t offset,size_t size,enum dma_data_direction direction,unsigned long attrs)241 dma_map_page_attrs(struct device *dev, struct page *page, size_t offset,
242 size_t size, enum dma_data_direction direction, unsigned long attrs)
243 {
244
245 return (lkpi_dma_map_phys(dev, page_to_phys(page) + offset, size,
246 direction, attrs));
247 }
248
249 static inline void
dma_unmap_page_attrs(struct device * dev,dma_addr_t dma_address,size_t size,enum dma_data_direction direction,unsigned long attrs)250 dma_unmap_page_attrs(struct device *dev, dma_addr_t dma_address, size_t size,
251 enum dma_data_direction direction, unsigned long attrs)
252 {
253 lkpi_dma_unmap(dev, dma_address, size, direction, attrs);
254 }
255
256 /* linux_dma_(un)map_sg_attrs does not support attrs yet */
257 #define dma_map_sg_attrs(dev, sgl, nents, dir, attrs) \
258 linux_dma_map_sg_attrs(dev, sgl, nents, dir, attrs)
259
260 #define dma_unmap_sg_attrs(dev, sg, nents, dir, attrs) \
261 linux_dma_unmap_sg_attrs(dev, sg, nents, dir, attrs)
262
263 static inline dma_addr_t
dma_map_page(struct device * dev,struct page * page,unsigned long offset,size_t size,enum dma_data_direction direction)264 dma_map_page(struct device *dev, struct page *page,
265 unsigned long offset, size_t size, enum dma_data_direction direction)
266 {
267
268 return (lkpi_dma_map_phys(dev, page_to_phys(page) + offset, size,
269 direction, 0));
270 }
271
272 static inline void
dma_unmap_page(struct device * dev,dma_addr_t dma_address,size_t size,enum dma_data_direction direction)273 dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
274 enum dma_data_direction direction)
275 {
276
277 lkpi_dma_unmap(dev, dma_address, size, direction, 0);
278 }
279
280 static inline dma_addr_t
dma_map_resource(struct device * dev,phys_addr_t paddr,size_t size,enum dma_data_direction direction,unsigned long attrs)281 dma_map_resource(struct device *dev, phys_addr_t paddr, size_t size,
282 enum dma_data_direction direction, unsigned long attrs)
283 {
284 return (lkpi_dma_map_phys(dev, paddr, size, direction, attrs));
285 }
286
287 static inline void
dma_unmap_resource(struct device * dev,dma_addr_t dma,size_t size,enum dma_data_direction direction,unsigned long attrs)288 dma_unmap_resource(struct device *dev, dma_addr_t dma, size_t size,
289 enum dma_data_direction direction, unsigned long attrs)
290 {
291 lkpi_dma_unmap(dev, dma, size, direction, attrs);
292 }
293
294 static inline void
dma_sync_single_for_cpu(struct device * dev,dma_addr_t dma,size_t size,enum dma_data_direction direction)295 dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma, size_t size,
296 enum dma_data_direction direction)
297 {
298 bus_dmasync_op_t op;
299
300 switch (direction) {
301 case DMA_BIDIRECTIONAL:
302 op = BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE;
303 break;
304 case DMA_TO_DEVICE:
305 op = BUS_DMASYNC_POSTWRITE;
306 break;
307 case DMA_FROM_DEVICE:
308 op = BUS_DMASYNC_POSTREAD;
309 break;
310 default:
311 return;
312 }
313
314 linuxkpi_dma_sync(dev, dma, size, op);
315 }
316
317 static inline void
dma_sync_single(struct device * dev,dma_addr_t addr,size_t size,enum dma_data_direction dir)318 dma_sync_single(struct device *dev, dma_addr_t addr, size_t size,
319 enum dma_data_direction dir)
320 {
321 dma_sync_single_for_cpu(dev, addr, size, dir);
322 }
323
324 static inline void
dma_sync_single_for_device(struct device * dev,dma_addr_t dma,size_t size,enum dma_data_direction direction)325 dma_sync_single_for_device(struct device *dev, dma_addr_t dma,
326 size_t size, enum dma_data_direction direction)
327 {
328 bus_dmasync_op_t op;
329
330 switch (direction) {
331 case DMA_BIDIRECTIONAL:
332 op = BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD;
333 break;
334 case DMA_TO_DEVICE:
335 op = BUS_DMASYNC_PREWRITE;
336 break;
337 case DMA_FROM_DEVICE:
338 op = BUS_DMASYNC_PREREAD;
339 break;
340 default:
341 return;
342 }
343
344 linuxkpi_dma_sync(dev, dma, size, op);
345 }
346
347 static inline void
dma_sync_sg_for_cpu(struct device * dev,struct scatterlist * sg,int nelems,enum dma_data_direction direction)348 dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
349 enum dma_data_direction direction)
350 {
351 bus_dmasync_op_t op;
352
353 switch (direction) {
354 case DMA_BIDIRECTIONAL:
355 op = BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE;
356 break;
357 case DMA_TO_DEVICE:
358 op = BUS_DMASYNC_POSTWRITE;
359 break;
360 case DMA_FROM_DEVICE:
361 op = BUS_DMASYNC_POSTREAD;
362 break;
363 default:
364 return;
365 }
366
367 lkpi_dma_sync_sg(dev, sg, op);
368 }
369
dma_sync_sgtable_for_cpu(struct device * dev,struct sg_table * sgt,enum dma_data_direction dir)370 static inline void dma_sync_sgtable_for_cpu(struct device *dev,
371 struct sg_table *sgt, enum dma_data_direction dir)
372 {
373 dma_sync_sg_for_cpu(dev, sgt->sgl, sgt->orig_nents, dir);
374 }
375
376 static inline void
dma_sync_sg_for_device(struct device * dev,struct scatterlist * sg,int nelems,enum dma_data_direction direction)377 dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
378 enum dma_data_direction direction)
379 {
380 bus_dmasync_op_t op;
381
382 switch (direction) {
383 case DMA_BIDIRECTIONAL:
384 op = BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD;
385 break;
386 case DMA_TO_DEVICE:
387 op = BUS_DMASYNC_PREWRITE;
388 break;
389 case DMA_FROM_DEVICE:
390 op = BUS_DMASYNC_PREREAD;
391 break;
392 default:
393 return;
394 }
395
396 lkpi_dma_sync_sg(dev, sg, op);
397 }
398
dma_sync_sgtable_for_device(struct device * dev,struct sg_table * sgt,enum dma_data_direction dir)399 static inline void dma_sync_sgtable_for_device(struct device *dev,
400 struct sg_table *sgt, enum dma_data_direction dir)
401 {
402 dma_sync_sg_for_device(dev, sgt->sgl, sgt->orig_nents, dir);
403 }
404
405 /* (20250329) These two seem to be unused code. */
406 static inline void
dma_sync_single_range_for_cpu(struct device * dev,dma_addr_t dma_handle,unsigned long offset,size_t size,enum dma_data_direction direction)407 dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
408 unsigned long offset, size_t size, enum dma_data_direction direction)
409 {
410 pr_debug("%s:%d: TODO dir %d\n", __func__, __LINE__, direction);
411 }
412
413 static inline void
dma_sync_single_range_for_device(struct device * dev,dma_addr_t dma_handle,unsigned long offset,size_t size,enum dma_data_direction direction)414 dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
415 unsigned long offset, size_t size, enum dma_data_direction direction)
416 {
417 pr_debug("%s:%d: TODO dir %d\n", __func__, __LINE__, direction);
418 }
419
420 #define DMA_MAPPING_ERROR (~(dma_addr_t)0)
421
422 static inline int
dma_mapping_error(struct device * dev,dma_addr_t dma_addr)423 dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
424 {
425
426 if (dma_addr == 0 || dma_addr == DMA_MAPPING_ERROR)
427 return (-ENOMEM);
428 return (0);
429 }
430
dma_set_max_seg_size(struct device * dev,unsigned int size)431 static inline unsigned int dma_set_max_seg_size(struct device *dev,
432 unsigned int size)
433 {
434 return (0);
435 }
436
437 static inline dma_addr_t
_dma_map_single_attrs(struct device * dev,void * ptr,size_t size,enum dma_data_direction direction,unsigned long attrs)438 _dma_map_single_attrs(struct device *dev, void *ptr, size_t size,
439 enum dma_data_direction direction, unsigned long attrs)
440 {
441 return (lkpi_dma_map_phys(dev, vtophys(ptr), size,
442 direction, attrs));
443 }
444
445 static inline void
_dma_unmap_single_attrs(struct device * dev,dma_addr_t dma,size_t size,enum dma_data_direction direction,unsigned long attrs)446 _dma_unmap_single_attrs(struct device *dev, dma_addr_t dma, size_t size,
447 enum dma_data_direction direction, unsigned long attrs)
448 {
449 lkpi_dma_unmap(dev, dma, size, direction, attrs);
450 }
451
452 static inline size_t
dma_max_mapping_size(struct device * dev)453 dma_max_mapping_size(struct device *dev)
454 {
455
456 return (SCATTERLIST_MAX_SEGMENT);
457 }
458
459 #define dma_map_single_attrs(dev, ptr, size, dir, attrs) \
460 _dma_map_single_attrs(dev, ptr, size, dir, attrs)
461
462 #define dma_unmap_single_attrs(dev, dma_addr, size, dir, attrs) \
463 _dma_unmap_single_attrs(dev, dma_addr, size, dir, attrs)
464
465 #define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, 0)
466 #define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, 0)
467 #define dma_map_sg(d, s, n, r) dma_map_sg_attrs(d, s, n, r, 0)
468 #define dma_unmap_sg(d, s, n, r) dma_unmap_sg_attrs(d, s, n, r, 0)
469
470 #define DEFINE_DMA_UNMAP_ADDR(name) dma_addr_t name
471 #define DEFINE_DMA_UNMAP_LEN(name) __u32 name
472 #define dma_unmap_addr(p, name) ((p)->name)
473 #define dma_unmap_addr_set(p, name, v) (((p)->name) = (v))
474 #define dma_unmap_len(p, name) ((p)->name)
475 #define dma_unmap_len_set(p, name, v) (((p)->name) = (v))
476
477 #define dma_get_cache_alignment() (uma_get_cache_align_mask() + 1)
478
479
480 static inline int
dma_map_sgtable(struct device * dev,struct sg_table * sgt,enum dma_data_direction dir,unsigned long attrs)481 dma_map_sgtable(struct device *dev, struct sg_table *sgt,
482 enum dma_data_direction dir,
483 unsigned long attrs)
484 {
485 int nents;
486
487 nents = dma_map_sg_attrs(dev, sgt->sgl, sgt->orig_nents, dir, attrs);
488 if (nents < 0)
489 return (nents);
490 sgt->nents = nents;
491 return (0);
492 }
493
494 static inline void
dma_unmap_sgtable(struct device * dev,struct sg_table * sgt,enum dma_data_direction dir,unsigned long attrs)495 dma_unmap_sgtable(struct device *dev, struct sg_table *sgt,
496 enum dma_data_direction dir,
497 unsigned long attrs)
498 {
499
500 dma_unmap_sg_attrs(dev, sgt->sgl, sgt->orig_nents, dir, attrs);
501 }
502
503
504 #endif /* _LINUXKPI_LINUX_DMA_MAPPING_H_ */
505