86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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#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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/* 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; /* length 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; /* contains '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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