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