03892d5fef
As Alan Stern pointed out this member has nothing to do with the Command Status Wrapper (CSW) as specified by the Universal Serial Bus Mass Storage Class Bulk-Only Transport rev 1.0. It defines the structure without the additional 18 filler bytes and defines the total size of the struct to exactly 13 bytes. Larger responses should be dropped. All in-tree users use a defines instead of sizeof() of this struct as far I can tell. Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
#ifndef __LINUX_USB_STORAGE_H
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#define __LINUX_USB_STORAGE_H
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/*
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* linux/usb/storage.h
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*
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* Copyright Matthew Wilcox for Intel Corp, 2010
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*
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* This file contains definitions taken from the
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* USB Mass Storage Class Specification Overview
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*
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* Distributed under the terms of the GNU GPL, version two.
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*/
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/* Storage subclass codes */
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#define USB_SC_RBC 0x01 /* Typically, flash devices */
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#define USB_SC_8020 0x02 /* CD-ROM */
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#define USB_SC_QIC 0x03 /* QIC-157 Tapes */
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#define USB_SC_UFI 0x04 /* Floppy */
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#define USB_SC_8070 0x05 /* Removable media */
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#define USB_SC_SCSI 0x06 /* Transparent */
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#define USB_SC_LOCKABLE 0x07 /* Password-protected */
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#define USB_SC_ISD200 0xf0 /* ISD200 ATA */
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#define USB_SC_CYP_ATACB 0xf1 /* Cypress ATACB */
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#define USB_SC_DEVICE 0xff /* Use device's value */
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/* Storage protocol codes */
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#define USB_PR_CBI 0x00 /* Control/Bulk/Interrupt */
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#define USB_PR_CB 0x01 /* Control/Bulk w/o interrupt */
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#define USB_PR_BULK 0x50 /* bulk only */
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#define USB_PR_UAS 0x62 /* USB Attached SCSI */
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#define USB_PR_USBAT 0x80 /* SCM-ATAPI bridge */
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#define USB_PR_EUSB_SDDR09 0x81 /* SCM-SCSI bridge for SDDR-09 */
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#define USB_PR_SDDR55 0x82 /* SDDR-55 (made up) */
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#define USB_PR_DPCM_USB 0xf0 /* Combination CB/SDDR09 */
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#define USB_PR_FREECOM 0xf1 /* Freecom */
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#define USB_PR_DATAFAB 0xf2 /* Datafab chipsets */
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#define USB_PR_JUMPSHOT 0xf3 /* Lexar Jumpshot */
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#define USB_PR_ALAUDA 0xf4 /* Alauda chipsets */
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#define USB_PR_KARMA 0xf5 /* Rio Karma */
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#define USB_PR_DEVICE 0xff /* Use device's value */
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/*
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* Bulk only data structures
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*/
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/* command block wrapper */
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struct bulk_cb_wrap {
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__le32 Signature; /* contains 'USBC' */
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__u32 Tag; /* unique per command id */
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__le32 DataTransferLength; /* size of data */
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__u8 Flags; /* direction in bit 0 */
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__u8 Lun; /* LUN normally 0 */
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__u8 Length; /* of of the CDB */
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__u8 CDB[16]; /* max command */
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};
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#define US_BULK_CB_WRAP_LEN 31
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#define US_BULK_CB_SIGN 0x43425355 /*spells out USBC */
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#define US_BULK_FLAG_IN (1 << 7)
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#define US_BULK_FLAG_OUT 0
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/* command status wrapper */
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struct bulk_cs_wrap {
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__le32 Signature; /* should = 'USBS' */
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__u32 Tag; /* same as original command */
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__le32 Residue; /* amount not transferred */
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__u8 Status; /* see below */
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};
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#define US_BULK_CS_WRAP_LEN 13
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#define US_BULK_CS_SIGN 0x53425355 /* spells out 'USBS' */
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#define US_BULK_STAT_OK 0
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#define US_BULK_STAT_FAIL 1
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#define US_BULK_STAT_PHASE 2
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/* bulk-only class specific requests */
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#define US_BULK_RESET_REQUEST 0xff
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#define US_BULK_GET_MAX_LUN 0xfe
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#endif
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