1 // SPDX-License-Identifier: GPL-2.0 2 #ifndef __LINUX_USB_STORAGE_H 3 #define __LINUX_USB_STORAGE_H 4 5 /* 6 * linux/usb/storage.h 7 * 8 * Copyright Matthew Wilcox for Intel Corp, 2010 9 * 10 * This file contains definitions taken from the 11 * USB Mass Storage Class Specification Overview 12 * 13 * Distributed under the terms of the GNU GPL, version two. 14 */ 15 16 /* Storage subclass codes */ 17 18 #define USB_SC_RBC 0x01 /* Typically, flash devices */ 19 #define USB_SC_8020 0x02 /* CD-ROM */ 20 #define USB_SC_QIC 0x03 /* QIC-157 Tapes */ 21 #define USB_SC_UFI 0x04 /* Floppy */ 22 #define USB_SC_8070 0x05 /* Removable media */ 23 #define USB_SC_SCSI 0x06 /* Transparent */ 24 #define USB_SC_LOCKABLE 0x07 /* Password-protected */ 25 26 #define USB_SC_ISD200 0xf0 /* ISD200 ATA */ 27 #define USB_SC_CYP_ATACB 0xf1 /* Cypress ATACB */ 28 #define USB_SC_DEVICE 0xff /* Use device's value */ 29 30 /* Storage protocol codes */ 31 32 #define USB_PR_CBI 0x00 /* Control/Bulk/Interrupt */ 33 #define USB_PR_CB 0x01 /* Control/Bulk w/o interrupt */ 34 #define USB_PR_BULK 0x50 /* bulk only */ 35 #define USB_PR_UAS 0x62 /* USB Attached SCSI */ 36 37 #define USB_PR_USBAT 0x80 /* SCM-ATAPI bridge */ 38 #define USB_PR_EUSB_SDDR09 0x81 /* SCM-SCSI bridge for SDDR-09 */ 39 #define USB_PR_SDDR55 0x82 /* SDDR-55 (made up) */ 40 #define USB_PR_DPCM_USB 0xf0 /* Combination CB/SDDR09 */ 41 #define USB_PR_FREECOM 0xf1 /* Freecom */ 42 #define USB_PR_DATAFAB 0xf2 /* Datafab chipsets */ 43 #define USB_PR_JUMPSHOT 0xf3 /* Lexar Jumpshot */ 44 #define USB_PR_ALAUDA 0xf4 /* Alauda chipsets */ 45 #define USB_PR_KARMA 0xf5 /* Rio Karma */ 46 47 #define USB_PR_DEVICE 0xff /* Use device's value */ 48 49 /* 50 * Bulk only data structures 51 */ 52 53 /* command block wrapper */ 54 struct bulk_cb_wrap { 55 __le32 Signature; /* contains 'USBC' */ 56 __u32 Tag; /* unique per command id */ 57 __le32 DataTransferLength; /* size of data */ 58 __u8 Flags; /* direction in bit 0 */ 59 __u8 Lun; /* LUN normally 0 */ 60 __u8 Length; /* length of the CDB */ 61 __u8 CDB[16]; /* max command */ 62 }; 63 64 #define US_BULK_CB_WRAP_LEN 31 65 #define US_BULK_CB_SIGN 0x43425355 /* spells out 'USBC' */ 66 #define US_BULK_FLAG_IN (1 << 7) 67 #define US_BULK_FLAG_OUT 0 68 69 /* command status wrapper */ 70 struct bulk_cs_wrap { 71 __le32 Signature; /* contains 'USBS' */ 72 __u32 Tag; /* same as original command */ 73 __le32 Residue; /* amount not transferred */ 74 __u8 Status; /* see below */ 75 }; 76 77 #define US_BULK_CS_WRAP_LEN 13 78 #define US_BULK_CS_SIGN 0x53425355 /* spells out 'USBS' */ 79 #define US_BULK_STAT_OK 0 80 #define US_BULK_STAT_FAIL 1 81 #define US_BULK_STAT_PHASE 2 82 83 /* bulk-only class specific requests */ 84 #define US_BULK_RESET_REQUEST 0xff 85 #define US_BULK_GET_MAX_LUN 0xfe 86 87 #endif 88