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1 /* Special Initializers for certain USB Mass Storage devices
3 * Current development and maintenance by:
4 * (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
6 * This driver is based on the 'USB Mass Storage Class' document. This
7 * describes in detail the protocol used to communicate with such
8 * devices. Clearly, the designers had SCSI and ATAPI commands in
9 * mind when they created this document. The commands are all very
10 * similar to commands in the SCSI-II and ATAPI specifications.
12 * It is important to note that in a number of cases this class
13 * exhibits class-specific exemptions from the USB specification.
14 * Notably the usage of NAK, STALL and ACK differs from the norm, in
15 * that they are used to communicate wait, failed and OK on commands.
17 * Also, for certain devices, the interrupt endpoint is used to convey
18 * status of a command.
20 * Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more
21 * information about this driver.
23 * This program is free software; you can redistribute it and/or modify it
24 * under the terms of the GNU General Public License as published by the
25 * Free Software Foundation; either version 2, or (at your option) any
28 * This program is distributed in the hope that it will be useful, but
29 * WITHOUT ANY WARRANTY; without even the implied warranty of
30 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
31 * General Public License for more details.
33 * You should have received a copy of the GNU General Public License along
34 * with this program; if not, write to the Free Software Foundation, Inc.,
35 * 675 Mass Ave, Cambridge, MA 02139, USA.
38 #include <linux/errno.h>
41 #include "initializers.h"
43 #include "transport.h"
45 /* This places the Shuttle/SCM USB<->SCSI bridge devices in multi-target
47 int usb_stor_euscsi_init(struct us_data
*us
)
51 usb_stor_dbg(us
, "Attempting to init eUSCSI bridge...\n");
52 result
= usb_stor_control_msg(us
, us
->send_ctrl_pipe
,
53 0x0C, USB_RECIP_INTERFACE
| USB_TYPE_VENDOR
,
54 0x01, 0x0, NULL
, 0x0, 5 * HZ
);
55 usb_stor_dbg(us
, "-- result is %d\n", result
);
60 /* This function is required to activate all four slots on the UCR-61S2B
62 int usb_stor_ucr61s2b_init(struct us_data
*us
)
64 struct bulk_cb_wrap
*bcb
= (struct bulk_cb_wrap
*) us
->iobuf
;
65 struct bulk_cs_wrap
*bcs
= (struct bulk_cs_wrap
*) us
->iobuf
;
68 static char init_string
[] = "\xec\x0a\x06\x00$PCCHIPS";
70 usb_stor_dbg(us
, "Sending UCR-61S2B initialization packet...\n");
72 bcb
->Signature
= cpu_to_le32(US_BULK_CB_SIGN
);
74 bcb
->DataTransferLength
= cpu_to_le32(0);
75 bcb
->Flags
= bcb
->Lun
= 0;
76 bcb
->Length
= sizeof(init_string
) - 1;
77 memset(bcb
->CDB
, 0, sizeof(bcb
->CDB
));
78 memcpy(bcb
->CDB
, init_string
, sizeof(init_string
) - 1);
80 res
= usb_stor_bulk_transfer_buf(us
, us
->send_bulk_pipe
, bcb
,
81 US_BULK_CB_WRAP_LEN
, &partial
);
85 usb_stor_dbg(us
, "Getting status packet...\n");
86 res
= usb_stor_bulk_transfer_buf(us
, us
->recv_bulk_pipe
, bcs
,
87 US_BULK_CS_WRAP_LEN
, &partial
);
94 /* This places the HUAWEI E220 devices in multi-port mode */
95 int usb_stor_huawei_e220_init(struct us_data
*us
)
99 result
= usb_stor_control_msg(us
, us
->send_ctrl_pipe
,
101 USB_TYPE_STANDARD
| USB_RECIP_DEVICE
,
102 0x01, 0x0, NULL
, 0x0, 1 * HZ
);
103 usb_stor_dbg(us
, "Huawei mode set result is %d\n", result
);