266 lines
4.0 KiB
HTML
266 lines
4.0 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML
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><HEAD
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><TITLE
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>st driver</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
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REL="HOME"
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TITLE="The Linux 2.4 SCSI subsystem HOWTO"
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HREF="index.html"><LINK
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REL="UP"
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TITLE="Compile options and System calls including ioctls"
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HREF="compileopt.html"><LINK
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REL="PREVIOUS"
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TITLE="sr driver"
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HREF="cosr.html"><LINK
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REL="NEXT"
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TITLE="sg driver"
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HREF="cosg.html"></HEAD
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><BODY
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CLASS="sect1"
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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LINK="#0000FF"
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VLINK="#840084"
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ALINK="#0000FF"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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SUMMARY="Header navigation table"
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>The Linux 2.4 SCSI subsystem HOWTO</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="cosr.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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>Appendix E. Compile options and System calls including ioctls</TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="cosg.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="sect1"
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><H1
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CLASS="sect1"
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><A
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NAME="cost"
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></A
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>E.4. st driver</H1
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><P
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> </P
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><DIV
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CLASS="sect2"
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><H2
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CLASS="sect2"
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><A
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NAME="costco"
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></A
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>E.4.1. st compile options</H2
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><P
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> Most of the following compile options can be overridden with
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boot/module parameters and/or runtime configuration (i.e. ioctls).
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</P
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><P
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> The following parameters are defined in linux/drivers/scsi/st_options.h
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<TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="programlisting"
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> ST_NOWAIT {0}
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ST_IN_FILE_POS {0}
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ST_RECOVERED_WRITE_FATAL {0}
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ST_DEFAULT_BLOCK {0}
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ST_BUFFER_BLOCKS {32}
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ST_WRITE_THRESHOLD_BLOCKS {30}
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ST_MAX_BUFFERS {4}
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ST_MAX_SG {16}
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ST_FIRST_SG {8}
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ST_FIRST_ORDER {5}
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ST_TWO_FM {0}
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ST_BUFFER_WRITES {1}
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ST_ASYNC_WRITES {1}
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ST_READ_AHEAD {1}
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ST_AUTO_LOCK {0}
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ST_FAST_MTEOM {0}
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ST_SCSI2LOGICAL {0}
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ST_SYSV {0}
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</PRE
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></FONT
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></TD
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></TR
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></TABLE
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>
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</P
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><P
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> The following parameters are defined in linux/drivers/scsi/st.c
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<TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="programlisting"
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> ST_TIMEOUT {900*HZ}
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ST_LONG_TIMEOUT {14000*HZ}
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</PRE
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></FONT
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></TD
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></TR
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></TABLE
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>
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</P
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></DIV
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><DIV
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CLASS="sect2"
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><H2
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CLASS="sect2"
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><A
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NAME="costio"
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></A
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>E.4.2. st ioctls and user interface</H2
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><P
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> The Linux tape interface is defined in
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<TT
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CLASS="filename"
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>/usr/src/linux/include/linux/mtio.h </TT
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>.
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</P
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><P
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> The following ioctl()s are listed in alphabetical order with a brief
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explanation to the right. [See st documentation (especially
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<B
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CLASS="command"
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>man 4 st</B
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>) for more details.]
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<TABLE
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BORDER="0"
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><FONT
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COLOR="#000000"
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><PRE
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CLASS="programlisting"
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> MTIOCTOP [execute tape commands and set drive/driver options]
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MTIOCGET [get the status of the drive]
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MTIOCPOS [get the current tape location]
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open() O_RDONLY, O_RDWR
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close()
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read()
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write()
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ioctl()
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</PRE
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></FONT
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></TD
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></TR
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></TABLE
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>
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</P
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></DIV
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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SUMMARY="Footer navigation table"
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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><A
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HREF="cosr.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="index.html"
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ACCESSKEY="H"
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>Home</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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HREF="cosg.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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><TR
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><TD
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WIDTH="33%"
|
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ALIGN="left"
|
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VALIGN="top"
|
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>sr driver</TD
|
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><TD
|
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="compileopt.html"
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ACCESSKEY="U"
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>Up</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
|
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VALIGN="top"
|
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>sg driver</TD
|
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></TR
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></TABLE
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></DIV
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></BODY
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></HTML
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> |