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/linux/Documentation/devicetree/bindings/usb/
H A Dusb-drd.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/usb/usb-drd.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Greg Kroah-Hartman <gregkh@linuxfoundation.org>
13 otg-rev:
16 which the device and its descriptors are compliant, in binary-coded
18 features (HNP/SRP/ADP) is enabled. If ADP is required, otg-rev should be
25 Tells Dual-Role USB controllers that we want to work on a particular
32 hnp-disable:
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/linux/drivers/scsi/
H A Dsg.c1 // SPDX-License-Identifier: GPL-2.0-or-later
11 * Copyright (C) 1998 - 2014 Douglas Gilbert
19 * - scsi logging is available via SCSI_LOG_TIMEOUT macros. First
89 readable via /proc/sys/kernel/sg-big-buff if the sg driver is built into
91 static int def_reserved_size = -1; /* picks up init parameter */
112 unsigned short k_use_sg; /* Count of kernel scatter-gather pieces */
113 unsigned sglist_len; /* size of malloc'd scatter-gather list ++ */
117 char dio_in_use; /* 0->indirect IO (or mmap), 1->dio */
126 struct sg_fd *parentfp; /* NULL -> not in use */
130 char res_used; /* 1 -> using reserve buffer, 0 -> not ... */
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H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
29 If you want to use a SCSI hard disk, SCSI tape drive, SCSI CD-ROM or
79 comment "SCSI support type (disk, tape, CD-ROM)"
89 the IOMEGA ZIP drive, say Y and read the SCSI-HOWTO,
90 the Disk-HOWTO and the Multi-Disk-HOWTO, available from
92 CD-ROMs.
108 SCSI-HOWTO, available from
111 for SCSI CD-ROMs.
122 by SCSI, FireWire, USB or ATAPI, say Y and read the SCSI-HOWTO
123 and the CDROM-HOWTO at <http://www.tldp.org/docs.html#howto>.
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/linux/include/linux/usb/
H A Dotg-fsm.h1 // SPDX-License-Identifier: GPL-2.0+
18 * Table:6-4
23 * Table:6-5
49 * struct otg_fsm - OTG state machine according to the OTG spec
54 * @id: TRUE for B-device, FALSE for A-device.
56 * ADP measurement taken at n-2, differs by more than CADP_THR
58 * ADP measurement taken if ADP capable
60 * A-Device state inputs
61 * @a_srp_det: TRUE if the A-device detects SRP
63 * @b_conn: TRUE if the A-device detects connection from the B-device
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/linux/Documentation/driver-api/usb/
H A Dgadget.rst11 This document presents a Linux-USB "Gadget" kernel mode API, for use
17 - Supports USB 2.0, for high speed devices which can stream data at
20 - Handles devices with dozens of endpoints just as well as ones with
21 just two fixed-function ones. Gadget drivers can be written so
24 - Flexible enough to expose more complex USB device capabilities such
28 - USB "On-The-Go" (OTG) support, in conjunction with updates to the
29 Linux-USB host side.
31 - Sharing data structures and API models with the Linux-USB host side
32 API. This helps the OTG support, and looks forward to more-symmetric
36 - Minimalist, so it's easier to support new device controller hardware.
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/linux/drivers/usb/dwc2/
H A Dparams.c1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
3 * Copyright (C) 2004-2016 Synopsys, Inc.
20 struct dwc2_core_params *p = &hsotg->params; in dwc2_set_bcm_params()
22 p->host_rx_fifo_size = 774; in dwc2_set_bcm_params()
23 p->max_transfer_size = 65535; in dwc2_set_bcm_params()
24 p->max_packet_count = 511; in dwc2_set_bcm_params()
25 p->ahbcfg = 0x10; in dwc2_set_bcm_params()
30 struct dwc2_core_params *p = &hsotg->params; in dwc2_set_his_params()
32 p->otg_caps.hnp_support = false; in dwc2_set_his_params()
33 p->otg_caps.srp_support = false; in dwc2_set_his_params()
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/linux/Documentation/driver-api/
H A Dscsi.rst12 ---------------
23 The `SCSI protocol <https://www.t10.org/scsi-3.htm>`__ is a big-endian
24 peer-to-peer packet based protocol. SCSI commands are 6, 10, 12, or 16
35 ----------------------------------
46 In between is the SCSI mid-layer, analogous to a network routing layer
47 such as the IPv4 stack. The SCSI mid-layer routes a packet based data
56 The upper layer supports the user-kernel interface by providing device
60 --------------
64 sr (SCSI CD-ROM)
65 ----------------
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/linux/include/uapi/linux/usb/
H A Dch9.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
9 * - the master/host side Linux-USB kernel driver API;
10 * - the "usbfs" user space API; and
11 * - the Linux "gadget" slave/device/peripheral side driver API.
22 * [b] so that accessing bigger-than-a-bytes fields will never
27 * someone that the two other points are non-issues for that
37 /*-------------------------------------------------------------------------*/
136 * See USB 2.0 spec Table 9-7
150 * See USB 3.0 spec Table 9-7
159 * Suspend Options, Table 9-8 USB 3.0 spec
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/linux/drivers/usb/host/
H A Docteon-hcd.h1 /* SPDX-License-Identifier: GPL-2.0 */
11 * Copyright (c) 2003-2010 Cavium Networks (support@cavium.com). All rights
104 * This register can be used to configure the core after power-on or a change in
105 * mode of operation. This register mainly contains AHB system-related
126 * @nptxfemplvl: Non-Periodic TxFIFO Empty Level (NPTxFEmpLvl)
128 * Indicates when the Non-Periodic TxFIFO Empty Interrupt bit in
131 * * 1'b0: GINTSTS.NPTxFEmp interrupt indicates that the Non-
133 * * 1'b1: GINTSTS.NPTxFEmp interrupt indicates that the Non-
172 * This value is in terms of 32-bit words.
197 * * 1'b0: Not OTG capable
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/linux/drivers/usb/core/
H A Dhub.c1 // SPDX-License-Identifier: GPL-2.0
71 /* Protect struct usb_device->state and ->children members
72 * Note: Both are also protected by ->dev.sem, except that ->state can
80 /* synchronize hub-port add/remove and peering operations */
90 * 10 seconds to send reply for the initial 64-byte descriptor request.
92 /* define initial 64-byte descriptor request timeout in milliseconds */
96 "initial 64-byte descriptor request timeout in milliseconds "
97 "(default 5000 - 5.0 seconds)");
141 if (hub_is_superspeedplus(hub->hdev)) in portspeed()
143 if (hub_is_superspeed(hub->hdev)) in portspeed()
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