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       1                 :            : /* Special Initializers for certain USB Mass Storage devices
       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                 :            : 
      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                 :          0 : int usb_stor_euscsi_init(struct us_data *us)
      48                 :            : {
      49                 :            :         int result;
      50                 :            : 
      51                 :            :         usb_stor_dbg(us, "Attempting to init eUSCSI bridge...\n");
      52                 :          0 :         us->iobuf[0] = 0x1;
      53                 :          0 :         result = usb_stor_control_msg(us, us->send_ctrl_pipe,
      54                 :            :                         0x0C, USB_RECIP_INTERFACE | USB_TYPE_VENDOR,
      55                 :          0 :                         0x01, 0x0, us->iobuf, 0x1, 5000);
      56                 :            :         usb_stor_dbg(us, "-- result is %d\n", result);
      57                 :            : 
      58                 :          0 :         return 0;
      59                 :            : }
      60                 :            : 
      61                 :            : /* This function is required to activate all four slots on the UCR-61S2B
      62                 :            :  * flash reader */
      63                 :          0 : int usb_stor_ucr61s2b_init(struct us_data *us)
      64                 :            : {
      65                 :          0 :         struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap*) us->iobuf;
      66                 :            :         struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap*) us->iobuf;
      67                 :            :         int res;
      68                 :            :         unsigned int partial;
      69                 :            :         static char init_string[] = "\xec\x0a\x06\x00$PCCHIPS";
      70                 :            : 
      71                 :            :         usb_stor_dbg(us, "Sending UCR-61S2B initialization packet...\n");
      72                 :            : 
      73                 :          0 :         bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
      74                 :          0 :         bcb->Tag = 0;
      75                 :          0 :         bcb->DataTransferLength = cpu_to_le32(0);
      76                 :          0 :         bcb->Flags = bcb->Lun = 0;
      77                 :          0 :         bcb->Length = sizeof(init_string) - 1;
      78                 :          0 :         memset(bcb->CDB, 0, sizeof(bcb->CDB));
      79                 :          0 :         memcpy(bcb->CDB, init_string, sizeof(init_string) - 1);
      80                 :            : 
      81                 :          0 :         res = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, bcb,
      82                 :            :                         US_BULK_CB_WRAP_LEN, &partial);
      83         [ #  # ]:          0 :         if (res)
      84                 :            :                 return -EIO;
      85                 :            : 
      86                 :            :         usb_stor_dbg(us, "Getting status packet...\n");
      87                 :          0 :         res = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, bcs,
      88                 :            :                         US_BULK_CS_WRAP_LEN, &partial);
      89         [ #  # ]:          0 :         if (res)
      90                 :            :                 return -EIO;
      91                 :            : 
      92                 :          0 :         return 0;
      93                 :            : }
      94                 :            : 
      95                 :            : /* This places the HUAWEI E220 devices in multi-port mode */
      96                 :          0 : int usb_stor_huawei_e220_init(struct us_data *us)
      97                 :            : {
      98                 :            :         int result;
      99                 :            : 
     100                 :          0 :         result = usb_stor_control_msg(us, us->send_ctrl_pipe,
     101                 :            :                                       USB_REQ_SET_FEATURE,
     102                 :            :                                       USB_TYPE_STANDARD | USB_RECIP_DEVICE,
     103                 :            :                                       0x01, 0x0, NULL, 0x0, 1000);
     104                 :            :         usb_stor_dbg(us, "Huawei mode set result is %d\n", result);
     105                 :          0 :         return 0;
     106                 :            : }