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Searched refs:nents (Results 1 – 25 of 170) sorted by relevance

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/linux/lib/
H A Dsg_pool.c40 static inline unsigned int sg_pool_index(unsigned short nents) in sg_pool_index() argument
44 BUG_ON(nents > SG_CHUNK_SIZE); in sg_pool_index()
46 if (nents <= 8) in sg_pool_index()
49 index = get_count_order(nents) - 3; in sg_pool_index()
54 static void sg_pool_free(struct scatterlist *sgl, unsigned int nents) in sg_pool_free() argument
58 sgp = sg_pools + sg_pool_index(nents); in sg_pool_free()
62 static struct scatterlist *sg_pool_alloc(unsigned int nents, gfp_t gfp_mask) in sg_pool_alloc() argument
66 sgp = sg_pools + sg_pool_index(nents); in sg_pool_alloc()
112 int sg_alloc_table_chained(struct sg_table *table, int nents, in sg_alloc_table_chained() argument
117 BUG_ON(!nents); in sg_alloc_table_chained()
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H A Dscatterlist.c27 int nents; in sg_nents() local
28 for (nents = 0; sg; sg = sg_next(sg)) in sg_nents()
29 nents++; in sg_nents()
30 return nents; in sg_nents()
50 int nents; in sg_nents_for_len() local
56 for (nents = 0, total = 0; sg; sg = sg_next(sg)) { in sg_nents_for_len()
57 nents++; in sg_nents_for_len()
60 return nents; in sg_nents_for_len()
81 struct scatterlist *sg_last(struct scatterlist *sgl, unsigned int nents) in sg_last() argument
86 for_each_sg(sgl, sg, nents, i) in sg_last()
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H A Dsg_split.c13 int nents; member
20 static int sg_calculate_split(struct scatterlist *in, int nents, int nb_splits, in sg_calculate_split() argument
32 splitters[i].nents = 0; in sg_calculate_split()
35 for_each_sg(in, sg, nents, i) { in sg_calculate_split()
48 curr->nents++; in sg_calculate_split()
59 curr->nents = 1; in sg_calculate_split()
86 for (j = 0; j < split->nents; j++, out_sg++) { in sg_split_phys()
110 for (j = 0; j < split->nents; j++, out_sg++) { in sg_split_mapped()
166 splitters[i].out_sg = kmalloc_array(splitters[i].nents, in sg_split()
188 out_mapped_nents[i] = splitters[i].nents; in sg_split()
H A Dkfifo.c310 unsigned int data_offset, int nents, in setup_sgl_buf()
315 if (!nents || !len) in setup_sgl_buf()
329 int nents, unsigned int len, unsigned int off, dma_addr_t dma) in setup_sgl_buf()
344 n = setup_sgl_buf(fifo, sgl, off, nents, len_to_end, dma); in setup_sgl()
345 n += setup_sgl_buf(fifo, sgl + n, 0, nents - n, len - len_to_end, dma); in setup_sgl()
351 struct scatterlist *sgl, int nents, unsigned int len, in setup_sgl()
360 return setup_sgl(fifo, sgl, nents, len, fifo->in, dma); in __kfifo_dma_in_prepare()
365 struct scatterlist *sgl, int nents, unsigned int len, in __kfifo_dma_in_prepare()
374 return setup_sgl(fifo, sgl, nents, len, fifo->out, dma); in __kfifo_dma_out_prepare()
558 struct scatterlist *sgl, int nents, unsigne in __kfifo_dma_in_prepare_r()
296 setup_sgl_buf(struct scatterlist * sgl,void * buf,int nents,unsigned int len) setup_sgl_buf() argument
335 setup_sgl(struct __kfifo * fifo,struct scatterlist * sgl,int nents,unsigned int len,unsigned int off) setup_sgl() argument
357 __kfifo_dma_in_prepare(struct __kfifo * fifo,struct scatterlist * sgl,int nents,unsigned int len) __kfifo_dma_in_prepare() argument
370 __kfifo_dma_out_prepare(struct __kfifo * fifo,struct scatterlist * sgl,int nents,unsigned int len) __kfifo_dma_out_prepare() argument
549 __kfifo_dma_in_prepare_r(struct __kfifo * fifo,struct scatterlist * sgl,int nents,unsigned int len,size_t recsize) __kfifo_dma_in_prepare_r() argument
572 __kfifo_dma_out_prepare_r(struct __kfifo * fifo,struct scatterlist * sgl,int nents,unsigned int len,size_t recsize) __kfifo_dma_out_prepare_r() argument
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/linux/drivers/gpu/drm/virtio/
H A Dvirtgpu_gem.c161 objs->nents = 0; in virtio_gpu_panic_array_alloc()
166 struct virtio_gpu_object_array *virtio_gpu_array_alloc(u32 nents) in virtio_gpu_array_alloc() argument
170 objs = kmalloc(struct_size(objs, objs, nents), GFP_KERNEL); in virtio_gpu_array_alloc()
174 objs->nents = 0; in virtio_gpu_array_alloc()
175 objs->total = nents; in virtio_gpu_array_alloc()
185 virtio_gpu_array_from_handles(struct drm_file *drm_file, u32 *handles, u32 nents) in virtio_gpu_array_from_handles() argument
190 objs = virtio_gpu_array_alloc(nents); in virtio_gpu_array_from_handles()
194 for (i = 0; i < nents; i++) { in virtio_gpu_array_from_handles()
197 objs->nents = i; in virtio_gpu_array_from_handles()
202 objs->nents = i; in virtio_gpu_array_from_handles()
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H A Dvirtgpu_prime.c147 unsigned int *nents, in virtgpu_dma_buf_import_sgt() argument
167 *ents = kvmalloc_array(sgt->nents, in virtgpu_dma_buf_import_sgt()
175 *nents = sgt->nents; in virtgpu_dma_buf_import_sgt()
236 unsigned int nents; in virtgpu_dma_buf_init_obj() local
251 ret = virtgpu_dma_buf_import_sgt(&ents, &nents, bo, attach); in virtgpu_dma_buf_init_obj()
261 ents, nents); in virtgpu_dma_buf_init_obj()
/linux/samples/kfifo/
H A Ddma-example.c27 unsigned int nents; in example_init() local
65 nents = kfifo_dma_in_prepare(&fifo, sg, ARRAY_SIZE(sg), FIFO_SIZE); in example_init()
66 printk(KERN_INFO "DMA sgl entries: %d\n", nents); in example_init()
67 if (!nents) { in example_init()
75 for (i = 0; i < nents; i++) { in example_init()
95 nents = kfifo_dma_out_prepare(&fifo, sg, ARRAY_SIZE(sg), 8); in example_init()
96 printk(KERN_INFO "DMA sgl entries: %d\n", nents); in example_init()
97 if (!nents) { in example_init()
104 for (i = 0; i < nents; i++) { in example_init()
/linux/include/linux/
H A Dscatterlist.h41 unsigned int nents; /* number of mapped entries */ member
233 for_each_sg((sgt)->sgl, sg, (sgt)->nents, i)
437 unsigned int nents) in sg_init_marker() argument
439 sg_mark_end(&sgl[nents - 1]); in sg_init_marker()
509 void sgl_free_n_order(struct scatterlist *sgl, int nents, int order);
514 size_t sg_copy_buffer(struct scatterlist *sgl, unsigned int nents, void *buf,
517 size_t sg_copy_from_buffer(struct scatterlist *sgl, unsigned int nents,
519 size_t sg_copy_to_buffer(struct scatterlist *sgl, unsigned int nents,
522 size_t sg_pcopy_from_buffer(struct scatterlist *sgl, unsigned int nents,
524 size_t sg_pcopy_to_buffer(struct scatterlist *sgl, unsigned int nents,
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/linux/drivers/dma-buf/
H A Ddma-buf-mapping.c12 unsigned int len, nents; in fill_sg_entry() local
15 nents = DIV_ROUND_UP(length, UINT_MAX); in fill_sg_entry()
16 for (i = 0; i < nents; i++) { in fill_sg_entry()
39 unsigned int nents = 0; in calc_sg_nents() local
44 nents += DIV_ROUND_UP(phys_vec[i].len, UINT_MAX); in calc_sg_nents()
51 nents = DIV_ROUND_UP(size, UINT_MAX); in calc_sg_nents()
54 return nents; in calc_sg_nents()
98 unsigned int nents, mapped_len = 0; in dma_buf_phys_vec_to_sgt() local
135 nents = calc_sg_nents(dma->state, phys_vec, nr_ranges, size); in dma_buf_phys_vec_to_sgt()
136 ret = sg_alloc_table(&dma->sgt, nents, GFP_KERNEL | __GFP_ZERO); in dma_buf_phys_vec_to_sgt()
/linux/include/trace/events/
H A Ddma.h279 TP_PROTO(struct device *dev, struct scatterlist *sgl, int nents,
281 TP_ARGS(dev, sgl, nents, ents, dir, attrs),
285 __dynamic_array(u64, phys_addrs, nents)
297 for_each_sg(sgl, sg, nents, i)
325 TP_PROTO(struct device *dev, struct scatterlist *sgl, int nents,
327 TP_ARGS(dev, sgl, nents, err, dir, attrs),
331 __dynamic_array(u64, phys_addrs, nents)
342 for_each_sg(sgl, sg, nents, i)
360 TP_PROTO(struct device *dev, struct scatterlist *sgl, int nents,
362 TP_ARGS(dev, sgl, nents, dir, attrs),
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/linux/drivers/gpu/drm/i915/
H A Di915_scatterlist.c21 if (orig_st->nents == orig_st->orig_nents) in i915_sg_trim()
24 if (sg_alloc_table(&new_st, orig_st->nents, GFP_KERNEL | __GFP_NOWARN)) in i915_sg_trim()
28 for_each_sg(orig_st->sgl, sg, orig_st->nents, i) { in i915_sg_trim()
113 st->nents = 0; in i915_rsgt_from_mm_node()
122 if (st->nents) in i915_rsgt_from_mm_node()
130 st->nents++; in i915_rsgt_from_mm_node()
199 st->nents = 0; in i915_rsgt_from_buddy_resource()
212 if (st->nents) in i915_rsgt_from_buddy_resource()
220 st->nents++; in i915_rsgt_from_buddy_resource()
/linux/drivers/hwtracing/intel_th/
H A Dmsu-sink.c54 unsigned int nents; in msu_sink_alloc_window() local
62 nents = DIV_ROUND_UP(size, PAGE_SIZE); in msu_sink_alloc_window()
64 ret = sg_alloc_table(*sgt, nents, GFP_KERNEL); in msu_sink_alloc_window()
70 for_each_sg((*sgt)->sgl, sg_ptr, nents, i) { in msu_sink_alloc_window()
80 return nents; in msu_sink_alloc_window()
90 for_each_sg(sgt->sgl, sg_ptr, sgt->nents, i) { in msu_sink_free_window()
/linux/drivers/crypto/ccree/
H A Dcc_buffer_mgr.c25 int nents[MAX_NUM_OF_BUFFERS_IN_MLLI]; member
77 unsigned int nents = 0; in cc_get_sgl_nents() local
82 nents++; in cc_get_sgl_nents()
90 dev_dbg(dev, "nents %d last bytes %d\n", nents, *lbytes); in cc_get_sgl_nents()
91 return nents; in cc_get_sgl_nents()
109 u32 nents; in cc_copy_sg_portion() local
111 nents = sg_nents_for_len(sg, end); in cc_copy_sg_portion()
112 sg_copy_buffer(sg, nents, dest, (end - to_skip + 1), to_skip, in cc_copy_sg_portion()
236 unsigned int nents, struct scatterlist *sgl, in cc_add_sg_entry() argument
243 index, nents, sgl, data_len, is_last_table); in cc_add_sg_entry()
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/linux/drivers/parisc/
H A Diommu-helpers.h15 iommu_fill_pdir(struct ioc *ioc, struct scatterlist *startsg, int nents, in iommu_fill_pdir() argument
30 while (nents-- > 0) { in iommu_fill_pdir()
34 DBG_RUN_SG(" %d : %08lx %p/%05x\n", nents, in iommu_fill_pdir()
102 struct scatterlist *startsg, int nents, in iommu_coalesce_chunks() argument
114 while (nents > 0) { in iommu_coalesce_chunks()
131 while(--nents > 0) { in iommu_coalesce_chunks()
/linux/kernel/dma/
H A Dmapping.c231 int nents, enum dma_data_direction dir, unsigned long attrs) in __dma_map_sg_attrs() argument
242 arch_dma_map_sg_direct(dev, sg, nents)) in __dma_map_sg_attrs()
243 ents = dma_direct_map_sg(dev, sg, nents, dir, attrs); in __dma_map_sg_attrs()
245 ents = iommu_dma_map_sg(dev, sg, nents, dir, attrs); in __dma_map_sg_attrs()
247 ents = ops->map_sg(dev, sg, nents, dir, attrs); in __dma_map_sg_attrs()
250 kmsan_handle_dma_sg(sg, nents, dir); in __dma_map_sg_attrs()
251 trace_dma_map_sg(dev, sg, nents, ents, dir, attrs); in __dma_map_sg_attrs()
252 debug_dma_map_sg(dev, sg, nents, ents, dir, attrs); in __dma_map_sg_attrs()
255 trace_dma_map_sg_err(dev, sg, nents, ents, dir, attrs); in __dma_map_sg_attrs()
280 int nents, enum dma_data_direction dir, unsigned long attrs) in dma_map_sg_attrs() argument
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/linux/drivers/target/iscsi/cxgbit/
H A Dcxgbit_ddp.c153 unsigned int nents) in cxgbit_ddp_sgl_check() argument
155 unsigned int last_sgidx = nents - 1; in cxgbit_ddp_sgl_check()
158 for (i = 0; i < nents; i++, sg = sg_next(sg)) { in cxgbit_ddp_sgl_check()
177 unsigned int sgcnt = ttinfo->nents; in cxgbit_ddp_reserve()
184 xferlen, ttinfo->nents); in cxgbit_ddp_reserve()
246 ttinfo->nents = cmd->se_cmd.t_data_nents; in cxgbit_get_r2t_ttt()
251 csk, cmd, cmd->se_cmd.data_length, ttinfo->nents); in cxgbit_get_r2t_ttt()
254 ttinfo->nents = 0; in cxgbit_get_r2t_ttt()
286 ttinfo->nents, DMA_FROM_DEVICE); in cxgbit_unmap_cmd()
287 ttinfo->nents = 0; in cxgbit_unmap_cmd()
/linux/rust/kernel/
H A Dscatterlist.rs158 let nents = unsafe { (*self.as_raw()).nents }; in iter() localVariable
160 let pos = if nents > 0 { in iter()
170 SGTableIter { pos, nents } in iter()
470 nents: c_uint, field
478 self.nents = self.nents.saturating_sub(1); in next()
483 self.pos = (!next.is_null() && self.nents > 0).then(|| { in next()
/linux/drivers/crypto/cavium/nitrox/
H A Dnitrox_req.h555 static inline void *alloc_req_buf(int nents, int extralen, gfp_t gfp) in alloc_req_buf() argument
559 size = sizeof(struct scatterlist) * nents; in alloc_req_buf()
621 int nents, int ivsize) in alloc_src_req_buf() argument
625 nkreq->src = alloc_req_buf(nents, ivsize, creq->gfp); in alloc_src_req_buf()
643 int nents, int ivsize, in nitrox_creq_set_src_sg() argument
652 sg_init_table(sg, nents); in nitrox_creq_set_src_sg()
667 int nents) in alloc_dst_req_buf() argument
672 nkreq->dst = alloc_req_buf(nents, extralen, creq->gfp); in alloc_dst_req_buf()
701 int nents, int ivsize, in nitrox_creq_set_dst_sg() argument
710 sg_init_table(sg, nents); in nitrox_creq_set_dst_sg()
H A Dnitrox_aead.c97 int nents = sg_nents_for_len(src, buflen); in alloc_src_sglist() local
100 if (nents < 0) in alloc_src_sglist()
101 return nents; in alloc_src_sglist()
104 nents += 1; in alloc_src_sglist()
106 ret = alloc_src_req_buf(nkreq, nents, ivsize); in alloc_src_sglist()
111 nitrox_creq_set_src_sg(nkreq, nents, ivsize, src, buflen); in alloc_src_sglist()
119 int nents = sg_nents_for_len(dst, buflen); in alloc_dst_sglist() local
122 if (nents < 0) in alloc_dst_sglist()
123 return nents; in alloc_dst_sglist()
126 nents += 3; in alloc_dst_sglist()
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/linux/drivers/mmc/core/
H A Dsdio_ops.c122 unsigned int nents, left_size, i; in mmc_io_rw_extended() local
152 nents = DIV_ROUND_UP(left_size, seg_size); in mmc_io_rw_extended()
153 if (nents > 1) { in mmc_io_rw_extended()
154 if (sg_alloc_table(&sgtable, nents, GFP_KERNEL)) in mmc_io_rw_extended()
158 data.sg_len = nents; in mmc_io_rw_extended()
196 if (nents > 1) in mmc_io_rw_extended()
/linux/drivers/spi/
H A Dspi-ep93xx.c281 int i, ret, nents; in ep93xx_spi_dma_prepare() local
321 nents = DIV_ROUND_UP(len, PAGE_SIZE); in ep93xx_spi_dma_prepare()
322 if (nents != sgt->nents) { in ep93xx_spi_dma_prepare()
325 ret = sg_alloc_table(sgt, nents, GFP_KERNEL); in ep93xx_spi_dma_prepare()
331 for_each_sg(sgt->sgl, sg, sgt->nents, i) { in ep93xx_spi_dma_prepare()
351 nents = dma_map_sg(chan->device->dev, sgt->sgl, sgt->nents, dir); in ep93xx_spi_dma_prepare()
352 if (!nents) in ep93xx_spi_dma_prepare()
355 txd = dmaengine_prep_slave_sg(chan, sgt->sgl, nents, conf.direction, in ep93xx_spi_dma_prepare()
358 dma_unmap_sg(chan->device->dev, sgt->sgl, sgt->nents, dir); in ep93xx_spi_dma_prepare()
387 dma_unmap_sg(chan->device->dev, sgt->sgl, sgt->nents, dir); in ep93xx_spi_dma_finish()
/linux/arch/mips/jazz/
H A Djazzdma.c550 int nents, enum dma_data_direction dir, unsigned long attrs) in jazz_dma_map_sg() argument
555 for_each_sg(sglist, sg, nents, i) { in jazz_dma_map_sg()
565 return nents; in jazz_dma_map_sg()
569 int nents, enum dma_data_direction dir, unsigned long attrs) in jazz_dma_unmap_sg() argument
574 for_each_sg(sglist, sg, nents, i) { in jazz_dma_unmap_sg()
594 struct scatterlist *sgl, int nents, enum dma_data_direction dir) in jazz_dma_sync_sg_for_device() argument
599 for_each_sg(sgl, sg, nents, i) in jazz_dma_sync_sg_for_device()
604 struct scatterlist *sgl, int nents, enum dma_data_direction dir) in jazz_dma_sync_sg_for_cpu() argument
609 for_each_sg(sgl, sg, nents, i) in jazz_dma_sync_sg_for_cpu()
/linux/arch/sparc/mm/
H A Diommu.c252 int nents, enum dma_data_direction dir, unsigned long attrs, in __sbus_iommu_map_sg() argument
258 for_each_sg(sgl, sg, nents, j) { in __sbus_iommu_map_sg()
266 return nents; in __sbus_iommu_map_sg()
270 int nents, enum dma_data_direction dir, unsigned long attrs) in sbus_iommu_map_sg_gflush() argument
273 return __sbus_iommu_map_sg(dev, sgl, nents, dir, attrs, false); in sbus_iommu_map_sg_gflush()
277 int nents, enum dma_data_direction dir, unsigned long attrs) in sbus_iommu_map_sg_pflush() argument
279 return __sbus_iommu_map_sg(dev, sgl, nents, dir, attrs, true); in sbus_iommu_map_sg_pflush()
302 int nents, enum dma_data_direction dir, unsigned long attrs) in sbus_iommu_unmap_sg() argument
307 for_each_sg(sgl, sg, nents, i) { in sbus_iommu_unmap_sg()
/linux/drivers/iio/buffer/
H A Dindustrialio-buffer-dmaengine.c74 int nents; in iio_dmaengine_buffer_submit_block() local
86 nents = sg_nents_for_len(sgl, block->bytes_used); in iio_dmaengine_buffer_submit_block()
87 if (nents < 0) in iio_dmaengine_buffer_submit_block()
88 return nents; in iio_dmaengine_buffer_submit_block()
90 vecs = kmalloc_array(nents, sizeof(*vecs), GFP_ATOMIC); in iio_dmaengine_buffer_submit_block()
96 for (i = 0; i < nents; i++) { in iio_dmaengine_buffer_submit_block()
105 vecs, nents, dma_dir, in iio_dmaengine_buffer_submit_block()
/linux/arch/x86/kernel/
H A Damd_gart_64.c277 static void gart_unmap_sg(struct device *dev, struct scatterlist *sg, int nents, in gart_unmap_sg() argument
283 for_each_sg(sg, s, nents, i) { in gart_unmap_sg()
292 int nents, int dir) in dma_map_sg_nonforce() argument
301 for_each_sg(sg, s, nents, i) { in dma_map_sg_nonforce()
309 nents = 0; in dma_map_sg_nonforce()
319 return nents; in dma_map_sg_nonforce()
378 static int gart_map_sg(struct device *dev, struct scatterlist *sg, int nents, in gart_map_sg() argument
387 if (nents == 0) in gart_map_sg()
398 for_each_sg(sg, s, nents, i) { in gart_map_sg()
440 if (out < nents) { in gart_map_sg()
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