forked from Minki/linux
7cb2d993c4
Now that the SPDX tag is in all USB files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Oliver Neukum <oneukum@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
98 lines
2.9 KiB
C
98 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Special Initializers for certain USB Mass Storage devices
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*
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* Current development and maintenance by:
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* (c) 1999, 2000 Matthew Dharm (mdharm-usb@one-eyed-alien.net)
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*
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* This driver is based on the 'USB Mass Storage Class' document. This
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* describes in detail the protocol used to communicate with such
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* devices. Clearly, the designers had SCSI and ATAPI commands in
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* mind when they created this document. The commands are all very
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* similar to commands in the SCSI-II and ATAPI specifications.
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*
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* It is important to note that in a number of cases this class
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* exhibits class-specific exemptions from the USB specification.
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* Notably the usage of NAK, STALL and ACK differs from the norm, in
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* that they are used to communicate wait, failed and OK on commands.
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*
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* Also, for certain devices, the interrupt endpoint is used to convey
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* status of a command.
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*
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* Please see http://www.one-eyed-alien.net/~mdharm/linux-usb for more
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* information about this driver.
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*/
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#include <linux/errno.h>
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#include "usb.h"
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#include "initializers.h"
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#include "debug.h"
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#include "transport.h"
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/*
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* This places the Shuttle/SCM USB<->SCSI bridge devices in multi-target
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* mode
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*/
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int usb_stor_euscsi_init(struct us_data *us)
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{
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int result;
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usb_stor_dbg(us, "Attempting to init eUSCSI bridge...\n");
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result = usb_stor_control_msg(us, us->send_ctrl_pipe,
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0x0C, USB_RECIP_INTERFACE | USB_TYPE_VENDOR,
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0x01, 0x0, NULL, 0x0, 5 * HZ);
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usb_stor_dbg(us, "-- result is %d\n", result);
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return 0;
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}
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/*
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* This function is required to activate all four slots on the UCR-61S2B
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* flash reader
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*/
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int usb_stor_ucr61s2b_init(struct us_data *us)
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{
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struct bulk_cb_wrap *bcb = (struct bulk_cb_wrap*) us->iobuf;
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struct bulk_cs_wrap *bcs = (struct bulk_cs_wrap*) us->iobuf;
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int res;
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unsigned int partial;
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static char init_string[] = "\xec\x0a\x06\x00$PCCHIPS";
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usb_stor_dbg(us, "Sending UCR-61S2B initialization packet...\n");
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bcb->Signature = cpu_to_le32(US_BULK_CB_SIGN);
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bcb->Tag = 0;
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bcb->DataTransferLength = cpu_to_le32(0);
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bcb->Flags = bcb->Lun = 0;
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bcb->Length = sizeof(init_string) - 1;
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memset(bcb->CDB, 0, sizeof(bcb->CDB));
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memcpy(bcb->CDB, init_string, sizeof(init_string) - 1);
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res = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, bcb,
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US_BULK_CB_WRAP_LEN, &partial);
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if (res)
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return -EIO;
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usb_stor_dbg(us, "Getting status packet...\n");
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res = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, bcs,
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US_BULK_CS_WRAP_LEN, &partial);
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if (res)
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return -EIO;
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return 0;
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}
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/* This places the HUAWEI E220 devices in multi-port mode */
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int usb_stor_huawei_e220_init(struct us_data *us)
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{
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int result;
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result = usb_stor_control_msg(us, us->send_ctrl_pipe,
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USB_REQ_SET_FEATURE,
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USB_TYPE_STANDARD | USB_RECIP_DEVICE,
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0x01, 0x0, NULL, 0x0, 1 * HZ);
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usb_stor_dbg(us, "Huawei mode set result is %d\n", result);
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return 0;
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}
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