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/linux/include/linux/
H A Dscatterlist.h26 * to get bus addresses of each of the SG entries and their lengths.
27 * You should only work with the number of sg entries dma_map_sg
28 * returns, or alternatively stop on the first sg_dma_len(sg) which
31 #define sg_dma_address(sg) ((sg)->dma_address) argument
34 #define sg_dma_len(sg) ((sg)->dma_length) argument
36 #define sg_dma_len(sg) ((sg)->length) argument
52 * Notes on SG table design.
55 * the page pointer AND encode information about the sg table as well. The two
58 * If bit 0 is set, then the page_link contains a pointer to the next sg
59 * table list. Otherwise the next entry is at sg + 1.
[all …]
/linux/tools/virtio/linux/
H A Dscatterlist.h15 #define sg_is_chain(sg) ((sg)->page_link & 0x01) argument
16 #define sg_is_last(sg) ((sg)->page_link & 0x02) argument
17 #define sg_chain_ptr(sg) \ argument
18 ((struct scatterlist *) ((sg)->page_link & ~0x03))
21 * sg_assign_page - Assign a given page to an SG entry
22 * @sg: SG entry
26 * Assign page to sg entry. Also see sg_set_page(), the most commonly used
30 static inline void sg_assign_page(struct scatterlist *sg, struct page *page) in sg_assign_page() argument
32 unsigned long page_link = sg->page_link & 0x3; in sg_assign_page()
40 BUG_ON(sg_is_chain(sg)); in sg_assign_page()
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/linux/drivers/ata/
H A Dsata_gemini.c125 bool gemini_sata_bridge_enabled(struct sata_gemini *sg, bool is_ata1) in gemini_sata_bridge_enabled() argument
127 if (!sg->sata_bridge) in gemini_sata_bridge_enabled()
133 if ((sg->muxmode == GEMINI_MUXMODE_2) && in gemini_sata_bridge_enabled()
136 if ((sg->muxmode == GEMINI_MUXMODE_3) && in gemini_sata_bridge_enabled()
144 enum gemini_muxmode gemini_sata_get_muxmode(struct sata_gemini *sg) in gemini_sata_get_muxmode() argument
146 return sg->muxmode; in gemini_sata_get_muxmode()
150 static int gemini_sata_setup_bridge(struct sata_gemini *sg, in gemini_sata_setup_bridge() argument
160 if (sg->muxmode == GEMINI_MUXMODE_2) in gemini_sata_setup_bridge()
162 writel(val, sg->base + GEMINI_SATA0_CTRL); in gemini_sata_setup_bridge()
166 if (sg->muxmode == GEMINI_MUXMODE_3) in gemini_sata_setup_bridge()
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/linux/Documentation/scsi/
H A Dscsi-generic.rst4 SCSI Generic (sg) driver
11 The SCSI Generic driver (sg) is one of the four "high level" SCSI device
12 drivers along with sd, st and sr (disk, tape and CD-ROM respectively). Sg
15 Thus sg is used for scanners, CD writers and reading audio CDs digitally
23 Major versions of the sg driver
25 There are three major versions of sg found in the Linux kernel (lk):
26 - sg version 1 (original) from 1992 to early 1999 (lk 2.2.5) .
28 - sg version 2 from lk 2.2.6 in the 2.2 series. It is based on
30 - sg version 3 found in the lk 2.4 series (and the lk 2.5 series).
34 Sg driver documentation
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/linux/lib/
H A Dscatterlist.c18 * @sg: The current sg entry
21 * Usually the next entry will be @sg@ + 1, but if this sg element is part
26 struct scatterlist *sg_next(struct scatterlist *sg) in sg_next() argument
28 if (sg_is_last(sg)) in sg_next()
31 sg++; in sg_next()
32 if (unlikely(sg_is_chain(sg))) in sg_next()
33 sg = sg_chain_ptr(sg); in sg_next()
35 return sg; in sg_next()
41 * @sg: The scatterlist
44 * Allows to know how many entries are in sg, taking into account
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/linux/drivers/clk/sprd/
H A Dgate.c13 static void clk_gate_toggle(const struct sprd_gate *sg, bool en) in clk_gate_toggle() argument
15 const struct sprd_clk_common *common = &sg->common; in clk_gate_toggle()
17 bool set = sg->flags & CLK_GATE_SET_TO_DISABLE ? true : false; in clk_gate_toggle()
24 reg |= sg->enable_mask; in clk_gate_toggle()
26 reg &= ~sg->enable_mask; in clk_gate_toggle()
31 static void clk_sc_gate_toggle(const struct sprd_gate *sg, bool en) in clk_sc_gate_toggle() argument
33 const struct sprd_clk_common *common = &sg->common; in clk_sc_gate_toggle()
34 bool set = sg->flags & CLK_GATE_SET_TO_DISABLE ? 1 : 0; in clk_sc_gate_toggle()
45 offset = set ? sg->sc_offset : sg->sc_offset * 2; in clk_sc_gate_toggle()
48 sg->enable_mask); in clk_sc_gate_toggle()
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/linux/drivers/gpu/drm/i915/
H A Di915_scatterlist.c18 struct scatterlist *sg, *new_sg; in i915_sg_trim() local
28 for_each_sg(orig_st->sgl, sg, orig_st->nents, i) { in i915_sg_trim()
29 sg_set_page(new_sg, sg_page(sg), sg->length, 0); in i915_sg_trim()
30 sg_dma_address(new_sg) = sg_dma_address(sg); in i915_sg_trim()
31 sg_dma_len(new_sg) = sg_dma_len(sg); in i915_sg_trim()
70 * @region_start: An offset to add to the dma addresses of the sg list.
71 * @page_alignment: Required page alignment for each sg entry. Power of two.
89 struct scatterlist *sg; in i915_rsgt_from_mm_node() local
112 sg = st->sgl; in i915_rsgt_from_mm_node()
121 if (offset != prev_end || sg->length >= max_segment) { in i915_rsgt_from_mm_node()
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H A Di915_scatterlist.h50 static inline int __sg_page_count(const struct scatterlist *sg) in __sg_page_count() argument
52 return sg->length >> PAGE_SHIFT; in __sg_page_count()
55 static inline int __sg_dma_page_count(const struct scatterlist *sg) in __sg_dma_page_count() argument
57 return sg_dma_len(sg) >> PAGE_SHIFT; in __sg_dma_page_count()
60 static inline struct scatterlist *____sg_next(struct scatterlist *sg) in ____sg_next() argument
62 ++sg; in ____sg_next()
63 if (unlikely(sg_is_chain(sg))) in ____sg_next()
64 sg = sg_chain_ptr(sg); in ____sg_next()
65 return sg; in ____sg_next()
70 * @sg: The current sg entry
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/linux/drivers/crypto/
H A Domap-crypto.c17 struct scatterlist **sg, in omap_crypto_copy_sg_lists() argument
20 int n = sg_nents(*sg); in omap_crypto_copy_sg_lists()
24 new_sg = kmalloc_array(n, sizeof(*sg), GFP_KERNEL); in omap_crypto_copy_sg_lists()
33 while (*sg && total) { in omap_crypto_copy_sg_lists()
34 int len = (*sg)->length; in omap_crypto_copy_sg_lists()
41 sg_set_page(tmp, sg_page(*sg), len, (*sg)->offset); in omap_crypto_copy_sg_lists()
47 *sg = sg_next(*sg); in omap_crypto_copy_sg_lists()
50 *sg = new_sg; in omap_crypto_copy_sg_lists()
55 static int omap_crypto_copy_sgs(int total, int bs, struct scatterlist **sg, in omap_crypto_copy_sgs() argument
73 scatterwalk_map_and_copy(buf, *sg, 0, total, 0); in omap_crypto_copy_sgs()
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/linux/include/soc/fsl/
H A Ddpaa2-fd.h284 * @addr: address of the sg entry
285 * @len: length in this sg entry
302 /* Accessors for SG entry fields */
305 * dpaa2_sg_get_addr() - Get the address from SG entry
306 * @sg: the given scatter-gathering object
310 static inline dma_addr_t dpaa2_sg_get_addr(const struct dpaa2_sg_entry *sg) in dpaa2_sg_get_addr() argument
312 return (dma_addr_t)le64_to_cpu(sg->addr); in dpaa2_sg_get_addr()
316 * dpaa2_sg_set_addr() - Set the address in SG entry
317 * @sg: the given scatter-gathering object
320 static inline void dpaa2_sg_set_addr(struct dpaa2_sg_entry *sg, dma_addr_t addr) in dpaa2_sg_set_addr() argument
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/linux/net/core/
H A Dskmsg.c15 if (msg->sg.end > msg->sg.start && in sk_msg_try_coalesce_ok()
16 elem_first_coalesce < msg->sg.end) in sk_msg_try_coalesce_ok()
19 if (msg->sg.end < msg->sg.start && in sk_msg_try_coalesce_ok()
20 (elem_first_coalesce > msg->sg.start || in sk_msg_try_coalesce_ok()
21 elem_first_coalesce < msg->sg.end)) in sk_msg_try_coalesce_ok()
31 u32 osize = msg->sg.size; in sk_msg_alloc()
34 len -= msg->sg.size; in sk_msg_alloc()
52 i = msg->sg.end; in sk_msg_alloc()
54 sge = &msg->sg.data[i]; in sk_msg_alloc()
66 sge = &msg->sg.data[msg->sg.end]; in sk_msg_alloc()
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/linux/drivers/net/ethernet/marvell/octeontx2/nic/
H A Dotx2_txrx.c104 static void otx2_dma_unmap_skb_frags(struct otx2_nic *pfvf, struct sg_list *sg) in otx2_dma_unmap_skb_frags() argument
108 for (seg = 0; seg < sg->num_segs; seg++) { in otx2_dma_unmap_skb_frags()
109 otx2_dma_unmap_page(pfvf, sg->dma_addr[seg], in otx2_dma_unmap_skb_frags()
110 sg->size[seg], DMA_TO_DEVICE); in otx2_dma_unmap_skb_frags()
112 sg->num_segs = 0; in otx2_dma_unmap_skb_frags()
120 struct sg_list *sg; in otx2_xdp_snd_pkt_handler() local
124 sg = &sq->sg[snd_comp->sqe_id]; in otx2_xdp_snd_pkt_handler()
126 pa = otx2_iova_to_phys(pfvf->iommu_domain, sg->dma_addr[0]); in otx2_xdp_snd_pkt_handler()
127 otx2_dma_unmap_page(pfvf, sg->dma_addr[0], in otx2_xdp_snd_pkt_handler()
128 sg->size[0], DMA_TO_DEVICE); in otx2_xdp_snd_pkt_handler()
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/linux/drivers/dma/
H A Ddma-axi-dmac.c139 struct axi_dmac_sg sg[] __counted_by(num_sgs);
232 struct axi_dmac_sg *sg; in axi_dmac_start_transfer() local
251 sg = &desc->sg[desc->num_submitted]; in axi_dmac_start_transfer()
254 if (sg->hw->id != AXI_DMAC_SG_UNUSED) { in axi_dmac_start_transfer()
255 sg->schedule_when_free = true; in axi_dmac_start_transfer()
272 sg->hw->id = axi_dmac_read(dmac, AXI_DMAC_REG_TRANSFER_ID); in axi_dmac_start_transfer()
276 axi_dmac_write(dmac, AXI_DMAC_REG_DEST_ADDRESS, sg->hw->dest_addr); in axi_dmac_start_transfer()
277 axi_dmac_write(dmac, AXI_DMAC_REG_DEST_STRIDE, sg->hw->dst_stride); in axi_dmac_start_transfer()
281 axi_dmac_write(dmac, AXI_DMAC_REG_SRC_ADDRESS, sg->hw->src_addr); in axi_dmac_start_transfer()
282 axi_dmac_write(dmac, AXI_DMAC_REG_SRC_STRIDE, sg->hw->src_stride); in axi_dmac_start_transfer()
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/linux/include/crypto/
H A Dscatterwalk.h21 struct scatterlist *sg, int num) in scatterwalk_crypto_chain() argument
23 if (sg) in scatterwalk_crypto_chain()
24 sg_chain(head, num, sg); in scatterwalk_crypto_chain()
31 unsigned int len = walk->sg->offset + walk->sg->length - walk->offset; in scatterwalk_pagelen()
51 return sg_page(walk->sg) + (walk->offset >> PAGE_SHIFT); in scatterwalk_page()
60 struct scatterlist *sg) in scatterwalk_start() argument
62 walk->sg = sg; in scatterwalk_start()
63 walk->offset = sg->offset; in scatterwalk_start()
78 page = sg_page(walk->sg) + ((walk->offset - 1) >> PAGE_SHIFT); in scatterwalk_pagedone()
82 if (more && walk->offset >= walk->sg->offset + walk->sg->length) in scatterwalk_pagedone()
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/linux/drivers/crypto/gemini/
H A Dsl3516-ce-cipher.c32 struct scatterlist *sg; in sl3516_ce_need_fallback() local
41 * Note: TX need one control desc for each SG in sl3516_ce_need_fallback()
53 sg = areq->src; in sl3516_ce_need_fallback()
54 while (sg) { in sl3516_ce_need_fallback()
55 if ((sg->length % 16) != 0) { in sl3516_ce_need_fallback()
59 if ((sg_dma_len(sg) % 16) != 0) { in sl3516_ce_need_fallback()
63 if (!IS_ALIGNED(sg->offset, 16)) { in sl3516_ce_need_fallback()
67 sg = sg_next(sg); in sl3516_ce_need_fallback()
69 sg = areq->dst; in sl3516_ce_need_fallback()
70 while (sg) { in sl3516_ce_need_fallback()
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/linux/drivers/crypto/allwinner/sun8i-ss/
H A Dsun8i-ss-cipher.c30 struct scatterlist *sg; in sun8i_ss_need_fallback() local
45 sg = areq->src; in sun8i_ss_need_fallback()
46 while (sg) { in sun8i_ss_need_fallback()
47 todo = min(len, sg->length); in sun8i_ss_need_fallback()
52 if (!IS_ALIGNED(sg->offset, 16)) { in sun8i_ss_need_fallback()
57 sg = sg_next(sg); in sun8i_ss_need_fallback()
60 sg = areq->dst; in sun8i_ss_need_fallback()
61 while (sg) { in sun8i_ss_need_fallback()
62 todo = min(len, sg->length); in sun8i_ss_need_fallback()
67 if (!IS_ALIGNED(sg->offset, 16)) { in sun8i_ss_need_fallback()
[all …]
/linux/net/mac80211/
H A Daead_api.c22 struct scatterlist sg[3]; in aead_encrypt() local
35 sg_init_table(sg, 3); in aead_encrypt()
36 sg_set_buf(&sg[0], __aad, aad_len); in aead_encrypt()
37 sg_set_buf(&sg[1], data, data_len); in aead_encrypt()
38 sg_set_buf(&sg[2], mic, mic_len); in aead_encrypt()
41 aead_request_set_crypt(aead_req, sg, sg, data_len, b_0); in aead_encrypt()
42 aead_request_set_ad(aead_req, sg[0].length); in aead_encrypt()
54 struct scatterlist sg[3]; in aead_decrypt() local
70 sg_init_table(sg, 3); in aead_decrypt()
71 sg_set_buf(&sg[0], __aad, aad_len); in aead_decrypt()
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H A Daes_gmac.c20 struct scatterlist sg[5]; in ieee80211_aes_gmac() local
41 sg_init_table(sg, 5); in ieee80211_aes_gmac()
42 sg_set_buf(&sg[0], __aad, GMAC_AAD_LEN); in ieee80211_aes_gmac()
43 sg_set_buf(&sg[1], zero, 8); in ieee80211_aes_gmac()
44 sg_set_buf(&sg[2], data + 8, data_len - 8 - GMAC_MIC_LEN); in ieee80211_aes_gmac()
45 sg_set_buf(&sg[3], zero, GMAC_MIC_LEN); in ieee80211_aes_gmac()
46 sg_set_buf(&sg[4], mic, GMAC_MIC_LEN); in ieee80211_aes_gmac()
48 sg_init_table(sg, 4); in ieee80211_aes_gmac()
49 sg_set_buf(&sg[0], __aad, GMAC_AAD_LEN); in ieee80211_aes_gmac()
50 sg_set_buf(&sg[1], data, data_len - GMAC_MIC_LEN); in ieee80211_aes_gmac()
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/linux/drivers/target/iscsi/cxgbit/
H A Dcxgbit_ddp.c13 struct scatterlist *sg = sg_pp ? *sg_pp : NULL; in cxgbit_set_one_ppod() local
21 if (sg) { in cxgbit_set_one_ppod()
22 addr = sg_dma_address(sg); in cxgbit_set_one_ppod()
23 len = sg_dma_len(sg); in cxgbit_set_one_ppod()
27 if (sg) { in cxgbit_set_one_ppod()
30 if (offset == (len + sg->offset)) { in cxgbit_set_one_ppod()
32 sg = sg_next(sg); in cxgbit_set_one_ppod()
33 if (sg) { in cxgbit_set_one_ppod()
34 addr = sg_dma_address(sg); in cxgbit_set_one_ppod()
35 len = sg_dma_len(sg); in cxgbit_set_one_ppod()
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/linux/drivers/infiniband/hw/mlx5/
H A Dumr.c523 struct ib_sge *sg) in mlx5r_umr_unmap_free_xlt() argument
527 dma_unmap_single(ddev, sg->addr, sg->length, DMA_TO_DEVICE); in mlx5r_umr_unmap_free_xlt()
528 mlx5r_umr_free_xlt(xlt, sg->length); in mlx5r_umr_unmap_free_xlt()
534 static void *mlx5r_umr_create_xlt(struct mlx5_ib_dev *dev, struct ib_sge *sg, in mlx5r_umr_create_xlt() argument
545 sg->length = nents * ent_size; in mlx5r_umr_create_xlt()
546 dma = dma_map_single(ddev, xlt, sg->length, DMA_TO_DEVICE); in mlx5r_umr_create_xlt()
549 mlx5r_umr_free_xlt(xlt, sg->length); in mlx5r_umr_create_xlt()
552 sg->addr = dma; in mlx5r_umr_create_xlt()
553 sg->lkey = dev->umrc.pd->local_dma_lkey; in mlx5r_umr_create_xlt()
560 unsigned int flags, struct ib_sge *sg) in mlx5r_umr_set_update_xlt_ctrl_seg() argument
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/linux/arch/powerpc/platforms/powernv/
H A Dopal-sensor-groups.c27 struct attribute_group sg; member
129 static int __init add_attr_group(const __be32 *ops, int len, struct sensor_group *sg, in add_attr_group() argument
138 add_attr(handle, &sg->sgattrs[count], j); in add_attr_group()
139 sg->sg.attrs[count] = in add_attr_group()
140 &sg->sgattrs[count].attr.attr; in add_attr_group()
144 return sysfs_create_group(sg_kobj, &sg->sg); in add_attr_group()
162 struct device_node *sg, *node; in opal_sensor_groups_init() local
165 sg = of_find_compatible_node(NULL, NULL, "ibm,opal-sensor-group"); in opal_sensor_groups_init()
166 if (!sg) { in opal_sensor_groups_init()
171 sgs = kcalloc(of_get_child_count(sg), sizeof(*sgs), GFP_KERNEL); in opal_sensor_groups_init()
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/linux/samples/kfifo/
H A Ddma-example.c28 struct scatterlist sg[10]; in example_init() local
60 * We need two different SG entries: one for the free space area at the in example_init()
64 sg_init_table(sg, ARRAY_SIZE(sg)); in example_init()
65 nents = kfifo_dma_in_prepare(&fifo, sg, ARRAY_SIZE(sg), FIFO_SIZE); in example_init()
77 "sg[%d] -> " in example_init()
79 i, sg_page(&sg[i]), sg[i].offset, sg[i].length); in example_init()
81 if (sg_is_last(&sg[i])) in example_init()
95 nents = kfifo_dma_out_prepare(&fifo, sg, ARRAY_SIZE(sg), 8); in example_init()
106 "sg[%d] -> " in example_init()
108 i, sg_page(&sg[i]), sg[i].offset, sg[i].length); in example_init()
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/linux/drivers/crypto/cavium/nitrox/
H A Dnitrox_req.h453 * struct sglist_component - SG list component format
469 * strutct nitrox_sgtable - SG list information
474 * @sg: crypto request buffer.
482 struct scatterlist *sg; member
506 * @in: SG table for input
507 * @out SG table for output
566 * create_single_sg - Point SG entry to the data
567 * @sg: Destination SG list
571 * Returns next free entry in the destination SG list
573 static inline struct scatterlist *create_single_sg(struct scatterlist *sg, in create_single_sg() argument
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/linux/tools/testing/selftests/bpf/progs/
H A Dloop6.c35 #define sg_is_chain(sg) ((sg)->page_link & SG_CHAIN) argument
36 #define sg_is_last(sg) ((sg)->page_link & SG_END) argument
37 #define sg_chain_ptr(sg) \ argument
38 ((struct scatterlist *) ((sg)->page_link & ~(SG_CHAIN | SG_END)))
42 struct scatterlist sg; in __sg_next() local
44 bpf_probe_read_kernel(&sg, sizeof(sg), sgp); in __sg_next()
45 if (sg_is_last(&sg)) in __sg_next()
50 bpf_probe_read_kernel(&sg, sizeof(sg), sgp); in __sg_next()
51 if (sg_is_chain(&sg)) in __sg_next()
52 sgp = sg_chain_ptr(&sg); in __sg_next()
/linux/drivers/crypto/qce/
H A Ddma.c53 struct scatterlist *sg = sgt->sgl, *sg_last = NULL; in qce_sgtable_add() local
56 while (sg) { in qce_sgtable_add()
57 if (!sg_page(sg)) in qce_sgtable_add()
59 sg = sg_next(sg); in qce_sgtable_add()
62 if (!sg) in qce_sgtable_add()
65 while (new_sgl && sg && max_len) { in qce_sgtable_add()
67 sg_set_page(sg, sg_page(new_sgl), new_len, new_sgl->offset); in qce_sgtable_add()
68 sg_last = sg; in qce_sgtable_add()
69 sg = sg_next(sg); in qce_sgtable_add()
77 static int qce_dma_prep_sg(struct dma_chan *chan, struct scatterlist *sg, in qce_dma_prep_sg() argument
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