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/* Driver for USB mass storage - include file
*
* (c) 1999 Michael Gee (michael@linuxspecific.com)
* (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
*
*/
#include <linux/config.h>
#define USB_STORAGE "usb-storage.c: "
#define USB_STOR_STRING_LEN 32
#ifdef CONFIG_USB_STORAGE_DEBUG
void us_show_command(Scsi_Cmnd *srb);
#define US_DEBUGP(x...) printk( KERN_DEBUG USB_STORAGE ## x )
#define US_DEBUGPX(x...) printk( ## x )
#define US_DEBUG(x) x
#else
#define US_DEBUGP(x...)
#define US_DEBUGPX(x...)
#define US_DEBUG(x)
#endif
/* bit set if input */
extern unsigned char us_direction[256/8];
#define US_DIRECTION(x) ((us_direction[x>>3] >> (x & 7)) & 1)
/* Sub Classes */
#define US_SC_RBC 0x01 /* Typically, flash devices */
#define US_SC_8020 0x02 /* CD-ROM */
#define US_SC_QIC 0x03 /* QIC-157 Tapes */
#define US_SC_UFI 0x04 /* Floppy */
#define US_SC_8070 0x05 /* Removable media */
#define US_SC_SCSI 0x06 /* Transparent */
#define US_SC_MIN US_SC_RBC
#define US_SC_MAX US_SC_SCSI
/* Protocols */
#define US_PR_CBI 0x00 /* Control/Bulk/Interrupt */
#define US_PR_CB 0x01 /* Control/Bulk w/o interrupt */
#define US_PR_BULK 0x50 /* bulk only */
/*
* Bulk only data structures
*/
/* command block wrapper */
struct bulk_cb_wrap {
__u32 Signature; /* contains 'USBC' */
__u32 Tag; /* unique per command id */
__u32 DataTransferLength; /* size of data */
__u8 Flags; /* direction in bit 0 */
__u8 Lun; /* LUN normally 0 */
__u8 Length; /* of of the CDB */
__u8 CDB[16]; /* max command */
};
#define US_BULK_CB_WRAP_LEN 31
#define US_BULK_CB_SIGN 0x43425355 /*spells out USBC */
#define US_BULK_FLAG_IN 1
#define US_BULK_FLAG_OUT 0
/* command status wrapper */
struct bulk_cs_wrap {
__u32 Signature; /* should = 'USBS' */
__u32 Tag; /* same as original command */
__u32 Residue; /* amount not transferred */
__u8 Status; /* see below */
__u8 Filler[18];
};
#define US_BULK_CS_WRAP_LEN 13
#define US_BULK_CS_SIGN 0x53425355 /* spells out 'USBS' */
#define US_BULK_STAT_OK 0
#define US_BULK_STAT_FAIL 1
#define US_BULK_STAT_PHASE 2
/* bulk-only class specific requests */
#define US_BULK_RESET_REQUEST 0xff
#define US_BULK_GET_MAX_LUN 0xfe
/*
* us_bulk_transfer() return codes
*/
#define US_BULK_TRANSFER_GOOD 0 /* good transfer */
#define US_BULK_TRANSFER_SHORT 1 /* transfered less than expected */
#define US_BULK_TRANSFER_FAILED 2 /* transfer died in the middle */
#define US_BULK_TRANSFER_ABORTED 3 /* transfer canceled */
/*
* Transport return codes
*/
#define USB_STOR_TRANSPORT_GOOD 0 /* Transport good, command good */
#define USB_STOR_TRANSPORT_FAILED 1 /* Transport good, command failed */
#define USB_STOR_TRANSPORT_ERROR 2 /* Transport bad (i.e. device dead) */
#define USB_STOR_TRANSPORT_ABORTED 3 /* Transport aborted */
/*
* CBI accept device specific command
*/
#define US_CBI_ADSC 0
/*
* GUID definitions
*/
#define GUID(x) __u32 x[3]
#define GUID_EQUAL(x, y) (x[0] == y[0] && x[1] == y[1] && x[2] == y[2])
#define GUID_CLEAR(x) x[0] = x[1] = x[2] = 0;
#define GUID_NONE(x) (!x[0] && !x[1] && !x[2])
#define GUID_FORMAT "%08x%08x%08x"
#define GUID_ARGS(x) x[0], x[1], x[2]
static inline void make_guid( __u32 *pg, __u16 vendor, __u16 product, char *serial)
{
pg[0] = (vendor << 16) | product;
pg[1] = pg[2] = 0;
while (*serial) {
pg[1] <<= 4;
pg[1] |= pg[2] >> 28;
pg[2] <<= 4;
if (*serial >= 'a')
*serial -= 'a' - 'A';
pg[2] |= (*serial <= '9' && *serial >= '0') ? *serial - '0'
: *serial - 'A' + 10;
serial++;
}
}
/*
* Unusual device list definitions
*/
struct us_unusual_dev {
/* we search the list based on these parameters */
__u16 idVendor;
__u16 idProduct;
__u16 bcdDevice;
/* the list specifies these parameters */
const char* name;
__u8 useProtocol;
__u8 useTransport;
unsigned int flags;
};
/* Flag definitions */
#define US_FL_SINGLE_LUN 0x00000001 /* allow access to only LUN 0 */
#define US_FL_MODE_XLATE 0x00000002 /* translate _6 to _10 comands for
Win/MacOS compatibility */
#define US_FL_START_STOP 0x00000004 /* ignore START_STOP commands */
#define US_FL_ALT_LENGTH 0x00000008 /* use the alternate algorithm for
us_transfer_length() */
#define US_FL_IGNORE_SER 0x00000010 /* Ignore the serial number given */
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