Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / usb / storage / transport.h

diff --git a/kernel/drivers/usb/storage/transport.h b/kernel/drivers/usb/storage/transport.h
new file mode 100644 (file)
index 0000000..9369d75
--- /dev/null
+++ b/kernel/drivers/usb/storage/transport.h
@@ -0,0 +1,103 @@
+/* Driver for USB Mass Storage compliant devices
+ * Transport Functions Header File
+ *
+ * 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.
+ */
+
+#ifndef _TRANSPORT_H_
+#define _TRANSPORT_H_
+
+#include <linux/blkdev.h>
+
+/*
+ * usb_stor_bulk_transfer_xxx() return codes, in order of severity
+ */
+
+#define USB_STOR_XFER_GOOD     0       /* good transfer                 */
+#define USB_STOR_XFER_SHORT    1       /* transferred less than expected */
+#define USB_STOR_XFER_STALLED  2       /* endpoint stalled              */
+#define USB_STOR_XFER_LONG     3       /* device tried to send too much */
+#define USB_STOR_XFER_ERROR    4       /* transfer died in the middle   */
+
+/*
+ * Transport return codes
+ */
+
+#define USB_STOR_TRANSPORT_GOOD           0   /* Transport good, command good     */
+#define USB_STOR_TRANSPORT_FAILED  1   /* Transport good, command failed   */
+#define USB_STOR_TRANSPORT_NO_SENSE 2  /* Command failed, no auto-sense    */
+#define USB_STOR_TRANSPORT_ERROR   3   /* Transport bad (i.e. device dead) */
+
+/*
+ * We used to have USB_STOR_XFER_ABORTED and USB_STOR_TRANSPORT_ABORTED
+ * return codes.  But now the transport and low-level transfer routines
+ * treat an abort as just another error (-ENOENT for a cancelled URB).
+ * It is up to the invoke_transport() function to test for aborts and
+ * distinguish them from genuine communication errors.
+ */
+
+/*
+ * CBI accept device specific command
+ */
+
+#define US_CBI_ADSC            0
+
+extern int usb_stor_CB_transport(struct scsi_cmnd *, struct us_data*);
+extern int usb_stor_CB_reset(struct us_data*);
+
+extern int usb_stor_Bulk_transport(struct scsi_cmnd *, struct us_data*);
+extern int usb_stor_Bulk_max_lun(struct us_data*);
+extern int usb_stor_Bulk_reset(struct us_data*);
+
+extern void usb_stor_invoke_transport(struct scsi_cmnd *, struct us_data*);
+extern void usb_stor_stop_transport(struct us_data*);
+
+extern int usb_stor_control_msg(struct us_data *us, unsigned int pipe,
+               u8 request, u8 requesttype, u16 value, u16 index,
+               void *data, u16 size, int timeout);
+extern int usb_stor_clear_halt(struct us_data *us, unsigned int pipe);
+
+extern int usb_stor_ctrl_transfer(struct us_data *us, unsigned int pipe,
+               u8 request, u8 requesttype, u16 value, u16 index,
+               void *data, u16 size);
+extern int usb_stor_bulk_transfer_buf(struct us_data *us, unsigned int pipe,
+               void *buf, unsigned int length, unsigned int *act_len);
+extern int usb_stor_bulk_transfer_sg(struct us_data *us, unsigned int pipe,
+               void *buf, unsigned int length, int use_sg, int *residual);
+extern int usb_stor_bulk_srb(struct us_data* us, unsigned int pipe,
+               struct scsi_cmnd* srb);
+
+extern int usb_stor_port_reset(struct us_data *us);
+#endif