1 /* Special Initializers for certain USB Mass Storage devices
3 * $Id: initializers.c,v 1.2 2000/09/06 22:35:57 mdharm Exp $
5 * Current development and maintenance by:
6 * (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
8 * This driver is based on the 'USB Mass Storage Class' document. This
9 * describes in detail the protocol used to communicate with such
10 * devices. Clearly, the designers had SCSI and ATAPI commands in
11 * mind when they created this document. The commands are all very
12 * similar to commands in the SCSI-II and ATAPI specifications.
14 * It is important to note that in a number of cases this class
15 * exhibits class-specific exemptions from the USB specification.
16 * Notably the usage of NAK, STALL and ACK differs from the norm, in
17 * that they are used to communicate wait, failed and OK on commands.
19 * Also, for certain devices, the interrupt endpoint is used to convey
20 * status of a command.
22 * Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more
23 * information about this driver.
25 * This program is free software; you can redistribute it and/or modify it
26 * under the terms of the GNU General Public License as published by the
27 * Free Software Foundation; either version 2, or (at your option) any
30 * This program is distributed in the hope that it will be useful, but
31 * WITHOUT ANY WARRANTY; without even the implied warranty of
32 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
33 * General Public License for more details.
35 * You should have received a copy of the GNU General Public License along
36 * with this program; if not, write to the Free Software Foundation, Inc.,
37 * 675 Mass Ave, Cambridge, MA 02139, USA.
40 #include <linux/errno.h>
43 #include "initializers.h"
45 #include "transport.h"
47 /* This places the Shuttle/SCM USB<->SCSI bridge devices in multi-target
49 int usb_stor_euscsi_init(struct us_data
*us
)
53 US_DEBUGP("Attempting to init eUSCSI bridge...\n");
55 result
= usb_stor_control_msg(us
, us
->send_ctrl_pipe
,
56 0x0C, USB_RECIP_INTERFACE
| USB_TYPE_VENDOR
,
57 0x01, 0x0, us
->iobuf
, 0x1, 5000);
58 US_DEBUGP("-- result is %d\n", result
);
63 /* This function is required to activate all four slots on the UCR-61S2B
65 int usb_stor_ucr61s2b_init(struct us_data
*us
)
67 struct bulk_cb_wrap
*bcb
= (struct bulk_cb_wrap
*) us
->iobuf
;
68 struct bulk_cs_wrap
*bcs
= (struct bulk_cs_wrap
*) us
->iobuf
;
70 static char init_string
[] = "\xec\x0a\x06\x00$PCCHIPS";
72 US_DEBUGP("Sending UCR-61S2B initialization packet...\n");
74 bcb
->Signature
= cpu_to_le32(US_BULK_CB_SIGN
);
76 bcb
->DataTransferLength
= cpu_to_le32(0);
77 bcb
->Flags
= bcb
->Lun
= 0;
78 bcb
->Length
= sizeof(init_string
) - 1;
79 memset(bcb
->CDB
, 0, sizeof(bcb
->CDB
));
80 memcpy(bcb
->CDB
, init_string
, sizeof(init_string
) - 1);
82 res
= usb_stor_bulk_transfer_buf(us
, us
->send_bulk_pipe
, bcb
,
83 US_BULK_CB_WRAP_LEN
, &partial
);
87 US_DEBUGP("Getting status packet...\n");
88 res
= usb_stor_bulk_transfer_buf(us
, us
->recv_bulk_pipe
, bcs
,
89 US_BULK_CS_WRAP_LEN
, &partial
);
96 /* This places the HUAWEI usb dongles in multi-port mode */
97 static int usb_stor_huawei_feature_init(struct us_data
*us
)
101 result
= usb_stor_control_msg(us
, us
->send_ctrl_pipe
,
103 USB_TYPE_STANDARD
| USB_RECIP_DEVICE
,
104 0x01, 0x0, NULL
, 0x0, 1000);
105 US_DEBUGP("Huawei mode set result is %d\n", result
);
110 * It will send a scsi switch command called rewind' to huawei dongle.
111 * When the dongle receives this command at the first time,
112 * it will reboot immediately. After rebooted, it will ignore this command.
113 * So it is unnecessary to read its response.
115 static int usb_stor_huawei_scsi_init(struct us_data
*us
)
119 struct bulk_cb_wrap
*bcbw
= (struct bulk_cb_wrap
*) us
->iobuf
;
120 char rewind_cmd
[] = {0x11, 0x06, 0x20, 0x00, 0x00, 0x01, 0x01, 0x00,
121 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
123 bcbw
->Signature
= cpu_to_le32(US_BULK_CB_SIGN
);
125 bcbw
->DataTransferLength
= 0;
126 bcbw
->Flags
= bcbw
->Lun
= 0;
127 bcbw
->Length
= sizeof(rewind_cmd
);
128 memset(bcbw
->CDB
, 0, sizeof(bcbw
->CDB
));
129 memcpy(bcbw
->CDB
, rewind_cmd
, sizeof(rewind_cmd
));
131 result
= usb_stor_bulk_transfer_buf(us
, us
->send_bulk_pipe
, bcbw
,
132 US_BULK_CB_WRAP_LEN
, &act_len
);
133 US_DEBUGP("transfer actual length=%d, result=%d\n", act_len
, result
);
138 * It tries to find the supported Huawei USB dongles.
139 * In Huawei, they assign the following product IDs
140 * for all of their mobile broadband dongles,
141 * including the new dongles in the future.
142 * So if the product ID is not included in this list,
143 * it means it is not Huawei's mobile broadband dongles.
145 static int usb_stor_huawei_dongles_pid(struct us_data
*us
)
147 struct usb_interface_descriptor
*idesc
;
150 idesc
= &us
->pusb_intf
->cur_altsetting
->desc
;
151 idProduct
= le16_to_cpu(us
->pusb_dev
->descriptor
.idProduct
);
152 /* The first port is CDROM,
153 * means the dongle in the single port mode,
154 * and a switch command is required to be sent. */
155 if (idesc
&& idesc
->bInterfaceNumber
== 0) {
156 if ((idProduct
== 0x1001)
157 || (idProduct
== 0x1003)
158 || (idProduct
== 0x1004)
159 || (idProduct
>= 0x1401 && idProduct
<= 0x1500)
160 || (idProduct
>= 0x1505 && idProduct
<= 0x1600)
161 || (idProduct
>= 0x1c02 && idProduct
<= 0x2202)) {
168 int usb_stor_huawei_init(struct us_data
*us
)
172 if (usb_stor_huawei_dongles_pid(us
)) {
173 if (le16_to_cpu(us
->pusb_dev
->descriptor
.idProduct
) >= 0x1446)
174 result
= usb_stor_huawei_scsi_init(us
);
176 result
= usb_stor_huawei_feature_init(us
);