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