Commit | Line | Data |
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1da177e4 | 1 | /* Special Initializers for certain USB Mass Storage devices |
1da177e4 LT |
2 | * |
3 | * Current development and maintenance by: | |
4 | * (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net) | |
5 | * | |
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. | |
11 | * | |
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. | |
16 | * | |
17 | * Also, for certain devices, the interrupt endpoint is used to convey | |
18 | * status of a command. | |
19 | * | |
20 | * Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more | |
21 | * information about this driver. | |
22 | * | |
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 | |
26 | * later version. | |
27 | * | |
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. | |
32 | * | |
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. | |
36 | */ | |
37 | ||
1da177e4 LT |
38 | #include <linux/errno.h> |
39 | ||
40 | #include "usb.h" | |
41 | #include "initializers.h" | |
42 | #include "debug.h" | |
43 | #include "transport.h" | |
44 | ||
45 | /* This places the Shuttle/SCM USB<->SCSI bridge devices in multi-target | |
46 | * mode */ | |
47 | int usb_stor_euscsi_init(struct us_data *us) | |
48 | { | |
49 | int result; | |
50 | ||
51 | US_DEBUGP("Attempting to init eUSCSI bridge...\n"); | |
52 | us->iobuf[0] = 0x1; | |
53 | result = usb_stor_control_msg(us, us->send_ctrl_pipe, | |
54 | 0x0C, USB_RECIP_INTERFACE | USB_TYPE_VENDOR, | |
55 | 0x01, 0x0, us->iobuf, 0x1, 5*HZ); | |
56 | US_DEBUGP("-- result is %d\n", result); | |
57 | ||
58 | return 0; | |
59 | } | |
60 | ||
61 | /* This function is required to activate all four slots on the UCR-61S2B | |
62 | * flash reader */ | |
63 | int usb_stor_ucr61s2b_init(struct us_data *us) | |
64 | { | |
65 | struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap*) us->iobuf; | |
66 | struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap*) us->iobuf; | |
0354c1ac MS |
67 | int res; |
68 | unsigned int partial; | |
1da177e4 LT |
69 | static char init_string[] = "\xec\x0a\x06\x00$PCCHIPS"; |
70 | ||
71 | US_DEBUGP("Sending UCR-61S2B initialization packet...\n"); | |
72 | ||
73 | bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN); | |
74 | bcb->Tag = 0; | |
75 | bcb->DataTransferLength = cpu_to_le32(0); | |
76 | bcb->Flags = bcb->Lun = 0; | |
77 | bcb->Length = sizeof(init_string) - 1; | |
78 | memset(bcb->CDB, 0, sizeof(bcb->CDB)); | |
79 | memcpy(bcb->CDB, init_string, sizeof(init_string) - 1); | |
80 | ||
81 | res = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, bcb, | |
82 | US_BULK_CB_WRAP_LEN, &partial); | |
83 | if(res) | |
84 | return res; | |
85 | ||
86 | US_DEBUGP("Getting status packet...\n"); | |
87 | res = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, bcs, | |
88 | US_BULK_CS_WRAP_LEN, &partial); | |
89 | ||
90 | return (res ? -1 : 0); | |
91 | } | |
d853d872 JW |
92 | |
93 | /* This places the HUAWEI E220 devices in multi-port mode */ | |
94 | int usb_stor_huawei_e220_init(struct us_data *us) | |
95 | { | |
96 | int result; | |
97 | ||
98 | us->iobuf[0] = 0x1; | |
99 | result = usb_stor_control_msg(us, us->send_ctrl_pipe, | |
100 | USB_REQ_SET_FEATURE, | |
101 | USB_TYPE_STANDARD | USB_RECIP_DEVICE, | |
102 | 0x01, 0x0, us->iobuf, 0x1, 1000); | |
103 | US_DEBUGP("usb_control_msg performing result is %d\n", result); | |
104 | return (result ? 0 : -1); | |
105 | } |