// SPDX-License-Identifier: GPL-2.0+ /* * Special Initializers for certain USB Mass Storage devices * * Current development and maintenance by: * (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net) * * This driver is based on the 'USB Mass Storage Class' document. This * describes in detail the protocol used to communicate with such * devices. Clearly, the designers had SCSI and ATAPI commands in * mind when they created this document. The commands are all very * similar to commands in the SCSI-II and ATAPI specifications. * * It is important to note that in a number of cases this class * exhibits class-specific exemptions from the USB specification. * Notably the usage of NAK, STALL and ACK differs from the norm, in * that they are used to communicate wait, failed and OK on commands. * * Also, for certain devices, the interrupt endpoint is used to convey * status of a command.
*/
/* * This places the Shuttle/SCM USB<->SCSI bridge devices in multi-target * mode
*/ int usb_stor_euscsi_init(struct us_data *us)
{ int result;
usb_stor_dbg(us, "Attempting to init eUSCSI bridge...\n");
result = usb_stor_control_msg(us, us->send_ctrl_pipe,
0x0C, USB_RECIP_INTERFACE | USB_TYPE_VENDOR,
0x01, 0x0, NULL, 0x0, 5 * HZ);
usb_stor_dbg(us, "-- result is %d\n", result);
return 0;
}
/* * This function is required to activate all four slots on the UCR-61S2B * flash reader
*/ int usb_stor_ucr61s2b_init(struct us_data *us)
{ struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap*) us->iobuf; struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap*) us->iobuf; int res; unsignedint partial; staticconstchar init_string[] = "\xec\x0a\x06\x00$PCCHIPS";
res = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, bcb,
US_BULK_CB_WRAP_LEN, &partial); if (res) return -EIO;
usb_stor_dbg(us, "Getting status packet...\n");
res = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, bcs,
US_BULK_CS_WRAP_LEN, &partial); if (res) return -EIO;
return 0;
}
/* This places the HUAWEI E220 devices in multi-port mode */ int usb_stor_huawei_e220_init(struct us_data *us)
{ int result;
result = usb_stor_control_msg(us, us->send_ctrl_pipe,
USB_REQ_SET_FEATURE,
USB_TYPE_STANDARD | USB_RECIP_DEVICE,
0x01, 0x0, NULL, 0x0, 1 * HZ);
usb_stor_dbg(us, "Huawei mode set result is %d\n", result); return 0;
}
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