<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML
><HEAD
><TITLE
>sd driver</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
REL="HOME"
TITLE="The Linux 2.4 SCSI subsystem HOWTO"
HREF="index.html"><LINK
REL="UP"
TITLE="Compile options and System calls including ioctls"
HREF="compileopt.html"><LINK
REL="PREVIOUS"
TITLE="Mid level"
HREF="coml.html"><LINK
REL="NEXT"
TITLE="sr driver"
HREF="cosr.html"></HEAD
><BODY
CLASS="sect1"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>The Linux 2.4 SCSI subsystem HOWTO</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="coml.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
>Appendix E. Compile options and System calls including ioctls</TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="cosr.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="sect1"
><H1
CLASS="sect1"
><A
NAME="cosd"
></A
>E.2. sd driver</H1
><P
> </P
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="cosdco"
></A
>E.2.1. sd compile options</H2
><P
> <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="programlisting"
> MAX_RETRIES {5}
SD_TIMEOUT {30 seconds}
SD_MOD_TIMEOUT {75 seconds}
</PRE
></FONT
></TD
></TR
></TABLE
>
</P
></DIV
><DIV
CLASS="sect2"
><H2
CLASS="sect2"
><A
NAME="cosdio"
></A
>E.2.2. sd ioctls and user interface</H2
><P
> The relevant files to see:
<TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="programlisting"
> include/linux/hdreg.h
include/linux/genhd.h
include/linux/fs.h
</PRE
></FONT
></TD
></TR
></TABLE
>
</P
><P
> A list of ioctl()s follow:
<TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><FONT
COLOR="#000000"
><PRE
CLASS="programlisting"
> HDIO_GETGEO_BIG
HDIO_GETGEO [retrieve disk geometry]
BLKGETSIZE [number of sectors in device]
BLKROSET [set read only flag]
BLKROGET [get read only flag]
BLKRASET [set read ahead value]
BLKRAGET [get read ahead value]
BLKFLSBUF [instructs SCSI subsystem to flush buffers]
BLKSSZGET [get device block size]
BLKPG [partition table manipulation]
BLKELVGET [get elevator parameters]
BLKELVSET [set elevator parameters]
BLKRRPART [reread the partition table]
open() (all flags ignored)
close()
ioctl() (see list above)
</PRE
></FONT
></TD
></TR
></TABLE
>
</P
></DIV
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="coml.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="cosr.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Mid level</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="compileopt.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>sr driver</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>
