| /Linux-v6.1/drivers/net/ethernet/marvell/octeon_ep/ |
| D | octep_tx.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
13 #define IQ_SEND_FAILED -1
20 /* Hardware format for Scatter/Gather list */
26 /* Each Scatter/Gather entry sent to hardwar hold four pointers.
28 * is for main skb which also goes as a gather buffer to Octeon hardware.
41 u8 gather; member
88 /* Packets sent with an octet count of 1024-1518 */
123 /* Gather entries sent through this queue. */
172 /* Base pointer to Scatter/Gather lists for all ring descriptors. */
175 /* DMA mapped addr of Scatter Gather Lists */
[all …]
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| /Linux-v6.1/drivers/crypto/cavium/zip/ |
| D | zip_device.h | 2 * Copyright (c) 2003-2017 Cavium, Inc.
55 * pointer to the input gather list buffer when scatter_gather == 1
57 union zip_zptr_s *gather; member
61 * pointer to the output scatter list buffer when scatter_gather == 1
63 union zip_zptr_s *scatter; member
66 * Holds size of the output buffer pointed by scatter list
71 /* for gather data */
74 /* for scatter data */
77 /* Number of gather list pointers for gather data */
80 /* Number of scatter list pointers for scatter data */
[all …]
|
| /Linux-v6.1/drivers/net/ethernet/huawei/hinic/ |
| D | hinic_common.c | 1 // SPDX-License-Identifier: GPL-2.0-only
14 * hinic_cpu_to_be32 - convert data to big endian 32 bit format
32 * hinic_be32_to_cpu - convert data from big endian 32 bit format
50 * hinic_set_sge - set dma area in scatter gather entry
51 * @sge: scatter gather entry
57 sge->hi_addr = upper_32_bits(addr); in hinic_set_sge()
58 sge->lo_addr = lower_32_bits(addr); in hinic_set_sge()
59 sge->len = len; in hinic_set_sge()
63 * hinic_sge_to_dma - get dma address from scatter gather entry
64 * @sge: scatter gather entry
[all …]
|
| /Linux-v6.1/drivers/gpu/drm/ |
| D | drm_gem_dma_helper.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
12 #include <linux/dma-buf.h>
13 #include <linux/dma-mapping.h>
31 * for devices that do not support scatter-gather DMA (either directly or
35 * the buffer objects are allocated using a traditional page-based
58 * __drm_gem_dma_create - Create a GEM DMA object without allocating memory
67 * A struct drm_gem_dma_object * on success or an ERR_PTR()-encoded negative
77 if (drm->driver->gem_create_object) { in __drm_gem_dma_create()
78 gem_obj = drm->driver->gem_create_object(drm, size); in __drm_gem_dma_create()
85 return ERR_PTR(-ENOMEM); in __drm_gem_dma_create()
[all …]
|
| D | drm_gem_shmem_helper.c | 1 // SPDX-License-Identifier: GPL-2.0
6 #include <linux/dma-buf.h>
61 if (dev->driver->gem_create_object) { in __drm_gem_shmem_create()
62 obj = dev->driver->gem_create_object(dev, size); in __drm_gem_shmem_create()
69 return ERR_PTR(-ENOMEM); in __drm_gem_shmem_create()
70 obj = &shmem->base; in __drm_gem_shmem_create()
73 if (!obj->funcs) in __drm_gem_shmem_create()
74 obj->funcs = &drm_gem_shmem_funcs; in __drm_gem_shmem_create()
78 shmem->map_wc = false; /* dma-buf mappings use always writecombine */ in __drm_gem_shmem_create()
89 mutex_init(&shmem->pages_lock); in __drm_gem_shmem_create()
[all …]
|
| /Linux-v6.1/drivers/scsi/ |
| D | st_options.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
3 The compile-time configurable defaults for the Linux SCSI tape driver.
5 Copyright 1995-2003 Kai Makisara.
13 /* If TRY_DIRECT_IO is non-zero, the driver tries to transfer data directly
19 to the user program if ST_NOWAIT is non-zero. This helps if the SCSI
31 /* If ST_RECOVERED_WRITE_FATAL is non-zero, recovered errors while writing
40 Must be non-zero. */
43 /* Maximum number of scatter/gather segments */
46 /* The number of scatter/gather segments to allocate at first try (must be
50 /* The size of the first scatter/gather segments (determines the maximum block
[all …]
|
| /Linux-v6.1/drivers/scsi/megaraid/ |
| D | megaraid_mbox.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
6 * Copyright (c) 2003-2004 LSI Logic Corporation.
94 #define MBOX_MAX_SG_SIZE 32 // maximum scatter-gather list size
102 #define MBOX_SYNC_DELAY_200 200 // 200 micro-seconds
112 * mbox_ccb_t - command control block specific to mailbox based controllers
117 * @sgl64 : 64-bit scatter-gather list
118 * @sgl32 : 32-bit scatter-gather list
119 * @sgl_dma_h : dma handle for the scatter-gather list
145 * mraid_device_t - adapter soft state structure for mailbox controllers
146 * @una_mbox64 : 64-bit mbox - unaligned
[all …]
|
| /Linux-v6.1/include/scsi/ |
| D | sg.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
16 * Copyright (C) 1998 - 2014 Douglas Gilbert
27 * Also see: <kernel_source>/Documentation/scsi/scsi-generic.rst
34 { /* call. It defines one scatter-gather element. */
46 unsigned short iovec_count; /* [i] 0 implies no scatter gather */
49 or scatter gather list */
52 unsigned int timeout; /* [i] MAX_UINT->no timeout (unit: millisec) */
53 unsigned int flags; /* [i] 0 -> default, see SG_FLAG... */
54 int pack_id; /* [i->o] unused internally (normally) */
55 void __user * usr_ptr; /* [i->o] unused internally */
[all …]
|
| /Linux-v6.1/drivers/parisc/ |
| D | iommu-helpers.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
5 * iommu_fill_pdir - Insert coalesced scatter/gather chunks into the I/O Pdir.
7 * @startsg: The scatter/gather list of coalesced chunks.
8 * @nents: The number of entries in the scatter/gather list.
11 * This function inserts the coalesced scatter/gather list chunks into the
28 dma_sg--; in iommu_fill_pdir()
30 while (nents-- > 0) { in iommu_fill_pdir()
36 sg_virt(startsg), startsg->length in iommu_fill_pdir()
57 sg_dma_address(dma_sg) = pide | ioc->ibase; in iommu_fill_pdir()
64 pdirp = &(ioc->pdir_base[pide >> IOVP_SHIFT]); in iommu_fill_pdir()
[all …]
|
| /Linux-v6.1/include/media/ |
| D | videobuf-dma-sg.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * The functions expect the hardware being able to scatter gather
12 * Highly based on video-buf written originally by:
20 #include <media/videobuf-core.h>
22 /* --------------------------------------------------------------------- */
34 * see Documentation/core-api/dma-api-howto.rst, these functions to
57 /* for overlay buffers (pci-pci dma) */
75 * Scatter-gather DMA buffer API.
78 * scatter-gather list from a kernel, userspace of physical address and map the
82 * videobuf-dma-sg uses the same API internally.
|
| /Linux-v6.1/include/linux/mtd/ |
| D | ubi.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
14 #include <mtd/ubi-user.h>
17 #define UBI_ALL -1
20 * Maximum number of scatter gather list entries,
26 * enum ubi_open_mode - UBI volume open mode constants.
28 * UBI_READONLY: read-only mode
29 * UBI_READWRITE: read-write mode
31 * UBI_METAONLY: modify only the volume meta-data,
42 * struct ubi_volume_info - UBI volume description data structure.
50 * @corrupted: non-zero if the volume is corrupted (static volumes only)
[all …]
|
| /Linux-v6.1/drivers/net/ethernet/mellanox/mlx5/core/fpga/ |
| D | sdk.h | 14 * - Redistributions of source code must retain the above
18 * - Redistributions in binary form must reproduce the above
38 #include <linux/dma-direction.h>
42 * This header defines the in-kernel API for Innova FPGA client drivers.
48 * enum mlx5_fpga_access_type - Enumerated the different methods possible for
51 * @MLX5_FPGA_ACCESS_TYPE_I2C: Use the slow CX-FPGA I2C bus
63 * struct mlx5_fpga_dma_entry - A scatter-gather DMA entry
70 /** @dma_addr: Private member. Physical DMA-mapped address of the data */
75 * struct mlx5_fpga_dma_buf - A packet buffer
76 * May contain up to 2 scatter-gather data entries
[all …]
|
| /Linux-v6.1/Documentation/scsi/ |
| D | st.rst | 1 .. SPDX-License-Identifier: GPL-2.0
23 flexible method and applicable to single-user workstations. However,
32 drive performs auto-detection of the tape format well (like some
33 QIC-drives). The result is that any tape can be read, writing can be
37 does not perform auto-detection well enough and there is a single
40 or not :-).
57 between formats in multi-tape operations (the explicitly overridden
72 limits). Both the auto-rewind (minor equals device number) and
73 non-rewind devices (minor is 128 + device number) are implemented.
128 dev_upper non-rew mode dev-lower
[all …]
|
| /Linux-v6.1/drivers/scsi/fnic/ |
| D | fcpio.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */
127 tag->u.req_id = id; in fcpio_tag_id_enc()
133 *id = tag->u.req_id; in fcpio_tag_id_dec()
139 tag->u.ex_id.rx_id = rx_id; in fcpio_tag_exid_enc()
140 tag->u.ex_id.ox_id = ox_id; in fcpio_tag_exid_enc()
146 *rx_id = tag->u.ex_id.rx_id; in fcpio_tag_exid_dec()
147 *ox_id = tag->u.ex_id.ox_id; in fcpio_tag_exid_dec()
166 hdr->type = type; in fcpio_header_enc()
167 hdr->status = status; in fcpio_header_enc()
168 hdr->_resvd = 0; in fcpio_header_enc()
[all …]
|
| /Linux-v6.1/drivers/misc/bcm-vk/ |
| D | bcm_vk_sg.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright 2018-2020 Broadcom.
9 #include <linux/dma-mapping.h>
23 * [U32] addr_l[0] = lower 32-bits of address0
24 * [U32] addr_h[0] = higher 32-bits of address0
26 * [U32] size[N-1] = size of data in addressN-1
27 * [U32] addr_l[N-1] = lower 32-bits of addressN-1
28 * [U32] addr_h[N-1] = higher 32-bits of addressN-1
45 * Scatter-gather DMA buffer API.
48 * scatter-gather list from userspace address and map the memory
|
| /Linux-v6.1/kernel/dma/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
92 <Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt>
97 # Should be selected if we can mmap non-coherent mappings to userspace.
123 to allocate big physically-contiguous blocks of memory for use with
124 hardware components that do not support I/O map nor scatter-gather.
207 bool "Enable debugging of DMA-API usage"
212 drivers like double-freeing of DMA mappings or freeing mappings that
221 bool "Debug DMA scatter-gather usage"
231 preparing literal scatter-gather descriptors, where there is a risk of
233 is technically out-of-spec.
|
| /Linux-v6.1/Documentation/driver-api/fpga/ |
| D | fpga-mgr.rst | 5 --------
13 The FPGA image to be programmed can be in a scatter gather list, a single
15 memory for the buffer should be avoided, users are encouraged to use a scatter
16 gather list instead if possible.
20 FPGA image as well as image-specific particulars such as whether the image was
24 --------------------------------
38 struct device *dev = &pdev->dev;
45 return -ENOMEM;
95 whole buffer will be passed into .parse_header. If image is in scatter-gather
98 size into info->header_size and return -EAGAIN, then it will be called again
[all …]
|
| /Linux-v6.1/include/xen/interface/io/ |
| D | vscsiif.h | 1 /* SPDX-License-Identifier: MIT */
34 *------------------ Backend Device Identification (PRIVATE) ------------------
36 * p-devname
41 * p-dev
44 * A string specifying the backend device: either a 4-tuple "h:c:t:l"
48 * v-dev
51 * A string specifying the frontend device in form of a 4-tuple "h:c:t:l"
54 *--------------------------------- Features ---------------------------------
56 * feature-sg-grant
60 * Specifies the maximum number of scatter/gather elements in grant pages
[all …]
|
| /Linux-v6.1/net/9p/ |
| D | trans_virtio.c | 1 // SPDX-License-Identifier: GPL-2.0-only
47 * struct virtio_chan - per-instance transport information
56 * @sg: scatter gather list which is used to pack a request (protected?)
59 * We keep all per-channel information in a structure.
60 * This structure is allocated within the devices dev->mem space.
94 return PAGE_SIZE - offset_in_page(data); in rest_of_page()
98 * p9_virtio_close - reclaim resources of a channel
108 struct virtio_chan *chan = client->trans; in p9_virtio_close()
112 chan->inuse = false; in p9_virtio_close()
117 * req_done - callback which signals activity from the server
[all …]
|
| /Linux-v6.1/drivers/net/ethernet/cavium/liquidio/ |
| D | liquidio_common.h | 7 * Copyright (c) 2003-2016 Cavium, Inc.
14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
19 * \brief Common: Structures and macros used in PCI-NIC package by core and
50 /* pre-defined host->NIC tag values */
60 /* Subcodes are used by host driver/apps to identify the sub-operation
85 #define VF_DRV_REMOVED -1
101 #define CVM_DRV_APP_END (CVM_DRV_INVALID_APP - 1)
123 index = index + count - max; in incr_index()
149 /*--------------------------- SCATTER GATHER ENTRY -----------------------*/
151 /* The Scatter-Gather List Entry. The scatter or gather component used with
[all …]
|
| /Linux-v6.1/drivers/misc/genwqe/ |
| D | card_ddcb.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
11 * Author: Joerg-Stephan Vogt <jsvogt@de.ibm.com>
23 * struct ddcb - Device Driver Control Block DDCB
120 * Accessing HSI/SHI is done 32-bit wide
121 * Normally 16-bit access would work too, but on some platforms the
123 * switching to 32-bit such that those platforms will work too.
139 * Genwqe Scatter Gather list
151 * 0b0010 First entry of a descriptor list. Start from a Buffer-Empty
163 * struct sglist - Scatter gather list
169 * Depending on the command the GenWQE card can use a scatter gather
|
| /Linux-v6.1/drivers/firmware/efi/ |
| D | capsule.c | 1 // SPDX-License-Identifier: GPL-2.0
25 static int efi_reset_type = -1;
34 * efi_capsule_pending - has a capsule been passed to the firmware?
47 * A non-racy use is from platform reboot code because we use
74 * efi_capsule_supported - does the firmware support the capsule?
94 return -EINVAL; in efi_capsule_supported()
105 return -ENOSPC; in efi_capsule_supported()
112 * Every scatter gather list (block descriptor) page must end with a
116 #define SGLIST_PER_PAGE ((PAGE_SIZE / sizeof(efi_capsule_block_desc_t)) - 1)
119 * How many scatter gather list (block descriptor) pages do we need
[all …]
|
| /Linux-v6.1/drivers/message/fusion/ |
| D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
65 int "Maximum number of scatter gather entries (16 - 128)"
69 This option allows you to specify the maximum number of scatter-
70 gather entries per I/O. The driver default is 128, which matches
|
| /Linux-v6.1/drivers/crypto/amcc/ |
| D | crypto4xx_core.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
35 #define PPC4XX_LAST_PD (PPC4XX_NUM_PD - 1)
37 #define PPC4XX_LAST_GD (PPC4XX_NUM_GD - 1)
39 #define PPC4XX_LAST_SD (PPC4XX_NUM_SD - 1)
59 u32 first_gd; /* first gather discriptor
61 u32 num_gd; /* number of gather discriptor
63 u32 first_sd; /* first scatter discriptor
65 u32 num_sd; /* number of scatter discriptors
82 struct ce_gd *gdr; /* gather descriptor ring */
84 struct ce_sd *sdr; /* scatter descriptor ring */
[all …]
|
| /Linux-v6.1/Documentation/networking/ |
| D | driver.rst | 1 .. SPDX-License-Identifier: GPL-2.0
15 for a driver implementing scatter-gather this means::
25 if (TX_BUFFS_AVAIL(dp) <= (skb_shinfo(skb)->nr_frags + 1)) {
29 dev->name);
47 if (netif_queue_stopped(dp->dev) &&
49 netif_wake_queue(dp->dev);
51 For a non-scatter-gather supporting card, the three tests simply become::
62 if (netif_queue_stopped(dp->dev) &&
64 netif_wake_queue(dp->dev);
|
