| /linux/include/linux/ |
| H A D | scatterlist.h | 26 * 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.
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| /linux/tools/virtio/linux/ |
| H A D | scatterlist.h | 15 #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/Documentation/scsi/ |
| H A D | scsi-generic.rst | 4 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/drivers/clk/sprd/ |
| H A D | gate.c | 13 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/crypto/ |
| H A D | omap-crypto.c | 17 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/lib/ |
| H A D | scatterlist.c | 18 * @sg: The scatterlist
21 * Allows to know how many entries are in sg, taking into account
25 int sg_nents(struct scatterlist *sg) in sg_nents() argument
28 for (nents = 0; sg; sg = sg_next(sg)) in sg_nents()
37 * @sg: The scatterlist
41 * Determines the number of entries in sg that are required to meet
45 * the number of sg entries needed, negative error on failure
48 int sg_nents_for_len(struct scatterlist *sg, u64 len) in sg_nents_for_len() argument
56 for (nents = 0, total = 0; sg; sg = sg_next(sg)) { in sg_nents_for_len()
58 total += sg->length; in sg_nents_for_len()
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| /linux/include/crypto/ |
| H A D | scatterwalk.h | 28 struct scatterlist *sg; member
74 struct scatterlist *sg, int num) in scatterwalk_crypto_chain() argument
76 if (sg) in scatterwalk_crypto_chain()
77 sg_chain(head, num, sg); in scatterwalk_crypto_chain()
83 struct scatterlist *sg) in scatterwalk_start() argument
85 walk->sg = sg; in scatterwalk_start()
86 walk->offset = sg->offset; in scatterwalk_start()
90 * This is equivalent to scatterwalk_start(walk, sg) followed by
94 struct scatterlist *sg, in scatterwalk_start_at_pos() argument
97 while (pos > sg->length) { in scatterwalk_start_at_pos()
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| /linux/include/soc/fsl/ |
| H A D | dpaa2-fd.h | 284 * @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/arch/s390/mm/ |
| H A D | gmap.c | 279 struct gmap *sg, *next; in gmap_remove() local
285 list_for_each_entry_safe(sg, next, &gmap->children, list) { in gmap_remove()
286 list_del(&sg->list); in gmap_remove()
287 gmap_put(sg); in gmap_remove()
868 * Expected to be called with sg->mm->mmap_lock in read and
914 * Expected to be called with sg->mm->mmap_lock in read
954 * Context: Called with sg->mm->mmap_lock in read.
1037 * @sg: pointer to the shadow guest address space structure
1041 * Called with the sg->guest_table_lock
1043 static inline void gmap_insert_rmap(struct gmap *sg, unsigned long vmaddr, in gmap_insert_rmap() argument
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| /linux/drivers/dma/ |
| H A D | dma-axi-dmac.c | 139 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/net/mac80211/ |
| H A D | aead_api.c | 22 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 D | aes_gmac.c | 20 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/net/core/ |
| H A D | skmsg.c | 15 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/crypto/gemini/ |
| H A D | sl3516-ce-cipher.c | 32 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/arch/s390/kvm/ |
| H A D | gmap-vsie.c | 40 struct gmap *sg; in gmap_find_shadow() local
43 list_for_each_entry(sg, &parent->children, list) { in gmap_find_shadow()
44 if (!gmap_shadow_valid(sg, asce, edat_level)) in gmap_find_shadow()
46 if (!sg->initialized) in gmap_find_shadow()
48 refcount_inc(&sg->ref_count); in gmap_find_shadow()
49 return sg; in gmap_find_shadow()
71 struct gmap *sg, *new; in gmap_shadow() local
79 sg = gmap_find_shadow(parent, asce, edat_level); in gmap_shadow()
81 if (sg) in gmap_shadow()
82 return sg; in gmap_shadow()
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| /linux/drivers/net/ethernet/marvell/octeontx2/nic/ |
| H A D | otx2_txrx.c | 111 struct sg_list *sg; in otx2_xdp_snd_pkt_handler() local
113 sg = &sq->sg[snd_comp->sqe_id]; in otx2_xdp_snd_pkt_handler()
114 if (sg->flags & OTX2_AF_XDP_FRAME) { in otx2_xdp_snd_pkt_handler()
119 if (sg->flags & OTX2_XDP_REDIRECT) in otx2_xdp_snd_pkt_handler()
120 otx2_dma_unmap_page(pfvf, sg->dma_addr[0], sg->size[0], DMA_TO_DEVICE); in otx2_xdp_snd_pkt_handler()
121 xdp_return_frame((struct xdp_frame *)sg->skb); in otx2_xdp_snd_pkt_handler()
122 sg->skb = (u64)NULL; in otx2_xdp_snd_pkt_handler()
135 struct sg_list *sg; in otx2_snd_pkt_handler() local
143 sg = &sq->sg[snd_comp->sqe_id]; in otx2_snd_pkt_handler()
144 skb = (struct sk_buff *)sg->skb; in otx2_snd_pkt_handler()
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| /linux/drivers/target/iscsi/cxgbit/ |
| H A D | cxgbit_ddp.c | 13 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/net/ovpn/ |
| H A D | crypto_aead.c | 45 struct scatterlist *sg; in ovpn_aead_encrypt() local
74 /* sg may be required by async crypto */ in ovpn_aead_encrypt()
75 ovpn_skb_cb(skb)->sg = kmalloc(sizeof(*ovpn_skb_cb(skb)->sg) * in ovpn_aead_encrypt()
77 if (unlikely(!ovpn_skb_cb(skb)->sg)) in ovpn_aead_encrypt()
80 sg = ovpn_skb_cb(skb)->sg; in ovpn_aead_encrypt()
82 /* sg table: in ovpn_aead_encrypt()
87 sg_init_table(sg, nfrags + 2); in ovpn_aead_encrypt()
90 ret = skb_to_sgvec_nomark(skb, sg + 1, 0, skb->len); in ovpn_aead_encrypt()
93 "encrypt: cannot map skb to sg: %d\n", ret); in ovpn_aead_encrypt()
99 sg_set_buf(sg + ret + 1, skb->data, tag_size); in ovpn_aead_encrypt()
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| /linux/samples/kfifo/ |
| H A D | dma-example.c | 28 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/arch/powerpc/platforms/powernv/ |
| H A D | opal-sensor-groups.c | 27 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/tools/testing/selftests/bpf/progs/ |
| H A D | loop6.c | 35 #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()
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| /linux/arch/alpha/kernel/ |
| H A D | pci_iommu.c | 265 assume it doesn't support sg mapping, and, since we tried to in pci_map_single_1()
268 printk_once(KERN_WARNING "pci_map_single: no HW sg\n"); in pci_map_single_1()
295 DBGA2("pci_map_single: [%p,%zx] np %ld -> sg %llx from %ps\n", in pci_map_single_1()
401 DBGA2("pci_unmap_single: sg [%llx,%zx] np %ld from %ps\n", in alpha_pci_unmap_page()
427 with vmalloc and sg if we can't find contiguous memory. */ in alpha_pci_alloc_coherent()
476 #define SG_ENT_VIRT_ADDRESS(SG) (sg_virt((SG))) argument
477 #define SG_ENT_PHYS_ADDRESS(SG) __pa(SG_ENT_VIRT_ADDRESS(SG)) argument
480 sg_classify(struct device *dev, struct scatterlist *sg, struct scatterlist *end, in sg_classify() argument
488 leader = sg; in sg_classify()
493 /* we will not marge sg without device. */ in sg_classify()
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| /linux/drivers/crypto/qce/ |
| H A D | dma.c | 57 struct scatterlist *sg = sgt->sgl, *sg_last = NULL; in qce_sgtable_add() local
60 while (sg) { in qce_sgtable_add()
61 if (!sg_page(sg)) in qce_sgtable_add()
63 sg = sg_next(sg); in qce_sgtable_add()
66 if (!sg) in qce_sgtable_add()
69 while (new_sgl && sg && max_len) { in qce_sgtable_add()
71 sg_set_page(sg, sg_page(new_sgl), new_len, new_sgl->offset); in qce_sgtable_add()
72 sg_last = sg; in qce_sgtable_add()
73 sg = sg_next(sg); in qce_sgtable_add()
81 static int qce_dma_prep_sg(struct dma_chan *chan, struct scatterlist *sg, in qce_dma_prep_sg() argument
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| /linux/drivers/crypto/cavium/nitrox/ |
| H A D | nitrox_req.h | 453 * 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/drivers/gpu/drm/i915/gem/ |
| H A D | i915_gem_internal.c | 21 struct scatterlist *sg; in internal_free_pages() local
23 for (sg = st->sgl; sg; sg = __sg_next(sg)) { in internal_free_pages()
24 if (sg_page(sg)) in internal_free_pages()
25 __free_pages(sg_page(sg), get_order(sg->length)); in internal_free_pages()
36 struct scatterlist *sg; in i915_gem_object_get_pages_internal() local
66 sg = st->sgl; in i915_gem_object_get_pages_internal()
85 sg_set_page(sg, page, PAGE_SIZE << order, 0); in i915_gem_object_get_pages_internal()
90 sg_mark_end(sg); in i915_gem_object_get_pages_internal()
94 sg = __sg_next(sg); in i915_gem_object_get_pages_internal()
98 /* Failed to dma-map try again with single page sg segments */ in i915_gem_object_get_pages_internal()
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