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5fd54ace | 1 | // SPDX-License-Identifier: GPL-2.0+ |
f0183a33 FB |
2 | /* |
3 | * Special Initializers for certain USB Mass Storage devices | |
1da177e4 LT |
4 | * |
5 | * Current development and maintenance by: | |
6 | * (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net) | |
7 | * | |
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. | |
13 | * | |
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. | |
18 | * | |
19 | * Also, for certain devices, the interrupt endpoint is used to convey | |
20 | * status of a command. | |
21 | * | |
22 | * Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more | |
23 | * information about this driver. | |
1da177e4 LT |
24 | */ |
25 | ||
1da177e4 LT |
26 | #include <linux/errno.h> |
27 | ||
28 | #include "usb.h" | |
29 | #include "initializers.h" | |
30 | #include "debug.h" | |
31 | #include "transport.h" | |
32 | ||
f0183a33 FB |
33 | /* |
34 | * This places the Shuttle/SCM USB<->SCSI bridge devices in multi-target | |
35 | * mode | |
36 | */ | |
1da177e4 LT |
37 | int usb_stor_euscsi_init(struct us_data *us) |
38 | { | |
39 | int result; | |
40 | ||
191648d0 | 41 | usb_stor_dbg(us, "Attempting to init eUSCSI bridge...\n"); |
1da177e4 LT |
42 | result = usb_stor_control_msg(us, us->send_ctrl_pipe, |
43 | 0x0C, USB_RECIP_INTERFACE | USB_TYPE_VENDOR, | |
eab77694 | 44 | 0x01, 0x0, NULL, 0x0, 5 * HZ); |
191648d0 | 45 | usb_stor_dbg(us, "-- result is %d\n", result); |
1da177e4 LT |
46 | |
47 | return 0; | |
48 | } | |
49 | ||
f0183a33 FB |
50 | /* |
51 | * This function is required to activate all four slots on the UCR-61S2B | |
52 | * flash reader | |
53 | */ | |
1da177e4 LT |
54 | int usb_stor_ucr61s2b_init(struct us_data *us) |
55 | { | |
56 | struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap*) us->iobuf; | |
57 | struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap*) us->iobuf; | |
0354c1ac MS |
58 | int res; |
59 | unsigned int partial; | |
1da177e4 LT |
60 | static char init_string[] = "\xec\x0a\x06\x00$PCCHIPS"; |
61 | ||
191648d0 | 62 | usb_stor_dbg(us, "Sending UCR-61S2B initialization packet...\n"); |
1da177e4 LT |
63 | |
64 | bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN); | |
65 | bcb->Tag = 0; | |
66 | bcb->DataTransferLength = cpu_to_le32(0); | |
67 | bcb->Flags = bcb->Lun = 0; | |
68 | bcb->Length = sizeof(init_string) - 1; | |
69 | memset(bcb->CDB, 0, sizeof(bcb->CDB)); | |
70 | memcpy(bcb->CDB, init_string, sizeof(init_string) - 1); | |
71 | ||
72 | res = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, bcb, | |
73 | US_BULK_CB_WRAP_LEN, &partial); | |
e05b8e6e PZ |
74 | if (res) |
75 | return -EIO; | |
1da177e4 | 76 | |
191648d0 | 77 | usb_stor_dbg(us, "Getting status packet...\n"); |
1da177e4 LT |
78 | res = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, bcs, |
79 | US_BULK_CS_WRAP_LEN, &partial); | |
e05b8e6e PZ |
80 | if (res) |
81 | return -EIO; | |
1da177e4 | 82 | |
e05b8e6e | 83 | return 0; |
1da177e4 | 84 | } |
d853d872 | 85 | |
ab4b7164 BM |
86 | /* This places the HUAWEI E220 devices in multi-port mode */ |
87 | int usb_stor_huawei_e220_init(struct us_data *us) | |
d853d872 JW |
88 | { |
89 | int result; | |
90 | ||
d853d872 JW |
91 | result = usb_stor_control_msg(us, us->send_ctrl_pipe, |
92 | USB_REQ_SET_FEATURE, | |
93 | USB_TYPE_STANDARD | USB_RECIP_DEVICE, | |
a88098bd | 94 | 0x01, 0x0, NULL, 0x0, 1 * HZ); |
191648d0 | 95 | usb_stor_dbg(us, "Huawei mode set result is %d\n", result); |
d0defb85 | 96 | return 0; |
d853d872 | 97 | } |