/* 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. * * Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more * information about this driver. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2, or (at your option) any * later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/errno.h> #include "usb.h"#include "initializers.h"#include "debug.h"#include "transport.h" /* This places the Shuttle/SCM USB<->SCSI bridge devices in multi-target * mode */int usb_stor_euscsi_init(struct us_data *us){	int result; 	US_DEBUGP("Attempting to init eUSCSI bridge...\n");	us->iobuf[0] = 0x1;	result = usb_stor_control_msg(us, us->send_ctrl_pipe,			0x0C, USB_RECIP_INTERFACE | USB_TYPE_VENDOR,			0x01, 0x0, us->iobuf, 0x1, 5000);	US_DEBUGP("-- 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;	unsigned int partial;	static char init_string[] = "\xec\x0a\x06\x00$PCCHIPS"; 	US_DEBUGP("Sending UCR-61S2B initialization packet...\n"); 	bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);	bcb->Tag = 0;	bcb->DataTransferLength = cpu_to_le32(0);	bcb->Flags = bcb->Lun = 0;	bcb->Length = sizeof(init_string) - 1;	memset(bcb->CDB, 0, sizeof(bcb->CDB));	memcpy(bcb->CDB, init_string, sizeof(init_string) - 1); 	res = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, bcb,			US_BULK_CB_WRAP_LEN, &partial);	if (res)		return -EIO; 	US_DEBUGP("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 usb dongles in multi-port mode */static int usb_stor_huawei_feature_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, 1000);	US_DEBUGP("Huawei mode set result is %d\n", result);	return 0;} /* * It will send a scsi switch command called rewind' to huawei dongle. * When the dongle receives this command at the first time, * it will reboot immediately. After rebooted, it will ignore this command. * So it is  unnecessary to read its response. */static int usb_stor_huawei_scsi_init(struct us_data *us){	int result = 0;	int act_len = 0;	struct bulk_cb_wrap *bcbw = (struct bulk_cb_wrap *) us->iobuf;	char rewind_cmd[] = {0x11, 0x06, 0x20, 0x00, 0x00, 0x01, 0x01, 0x00,			0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; 	bcbw->Signature = cpu_to_le32(US_BULK_CB_SIGN);	bcbw->Tag = 0;	bcbw->DataTransferLength = 0;	bcbw->Flags = bcbw->Lun = 0;	bcbw->Length = sizeof(rewind_cmd);	memset(bcbw->CDB, 0, sizeof(bcbw->CDB));	memcpy(bcbw->CDB, rewind_cmd, sizeof(rewind_cmd)); 	result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, bcbw,					US_BULK_CB_WRAP_LEN, &act_len);	US_DEBUGP("transfer actual length=%d, result=%d\n", act_len, result);	return result;} /* * It tries to find the supported Huawei USB dongles. * In Huawei, they assign the following product IDs * for all of their mobile broadband dongles, * including the new dongles in the future. * So if the product ID is not included in this list, * it means it is not Huawei's mobile broadband dongles. */static int usb_stor_huawei_dongles_pid(struct us_data *us){	struct usb_interface_descriptor *idesc;	int idProduct; 	idesc = &us->pusb_intf->cur_altsetting->desc;	idProduct = us->pusb_dev->descriptor.idProduct;	/* The first port is CDROM,	 * means the dongle in the single port mode,	 * and a switch command is required to be sent. */	if (idesc && idesc->bInterfaceNumber == 0) {		if ((idProduct == 0x1001)			|| (idProduct == 0x1003)			|| (idProduct == 0x1004)			|| (idProduct >= 0x1401 && idProduct <= 0x1500)			|| (idProduct >= 0x1505 && idProduct <= 0x1600)			|| (idProduct >= 0x1c02 && idProduct <= 0x2202)) {			return 1;		}	}	return 0;} int usb_stor_huawei_init(struct us_data *us){	int result = 0; 	if (usb_stor_huawei_dongles_pid(us)) {		if (us->pusb_dev->descriptor.idProduct >= 0x1446)			result = usb_stor_huawei_scsi_init(us);		else			result = usb_stor_huawei_feature_init(us);	}	return result;}