text: /* 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;
  
  	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;
  	unsigned int partial;
  	static char init_string[] = "\xec\x0a\x06\x00$PCCHIPS";
  
  	usb_stor_dbg(us, "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;
  
  	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;
  }
  