<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"> <HTML ><HEAD ><TITLE >MCA Architecture</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="The Linux Kernel API" HREF="book1.html"><LINK REL="UP" TITLE="Hardware Interfaces" HREF="c7962.html"><LINK REL="PREVIOUS" TITLE="pci_write_config_dword_nodev" HREF="r9658.html"><LINK REL="NEXT" TITLE="The Device File System" HREF="c10385.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 Kernel API</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="r9658.html" ACCESSKEY="P" ><<< Previous</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Hardware Interfaces</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="c10385.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="AEN9720" ></A >MCA Architecture</H1 ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN9722" ></A >MCA Device Functions</H2 ><DIV CLASS="TOC" ><DL ><DT ><B >Table of Contents</B ></DT ><DT ><A HREF="r9724.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_find_adapter</SPAN ></SPAN ></A > -- scan for adapters </DT ><DT ><A HREF="r9759.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_find_unused_adapter</SPAN ></SPAN ></A > -- scan for unused adapters </DT ><DT ><A HREF="r9794.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_read_stored_pos</SPAN ></SPAN ></A > -- read POS register from boot data </DT ><DT ><A HREF="r9827.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_read_pos</SPAN ></SPAN ></A > -- read POS register from card </DT ><DT ><A HREF="r9860.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_write_pos</SPAN ></SPAN ></A > -- read POS register from card </DT ><DT ><A HREF="r9903.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_set_adapter_name</SPAN ></SPAN ></A > -- Set the description of the card </DT ><DT ><A HREF="r9936.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_set_adapter_procfn</SPAN ></SPAN ></A > -- Set the /proc callback </DT ><DT ><A HREF="r9979.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_is_adapter_used</SPAN ></SPAN ></A > -- check if claimed by driver </DT ><DT ><A HREF="r10005.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_mark_as_used</SPAN ></SPAN ></A > -- claim an MCA device </DT ><DT ><A HREF="r10032.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_mark_as_unused</SPAN ></SPAN ></A > -- release an MCA device </DT ><DT ><A HREF="r10058.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_get_adapter_name</SPAN ></SPAN ></A > -- get the adapter description </DT ><DT ><A HREF="r10084.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_isadapter</SPAN ></SPAN ></A > -- check if the slot holds an adapter </DT ><DT ><A HREF="r10110.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_isenabled</SPAN ></SPAN ></A > -- check if the slot holds an adapter </DT ></DL ></DIV ></DIV ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN10136" ></A >MCA Bus DMA</H2 ><DIV CLASS="TOC" ><DL ><DT ><B >Table of Contents</B ></DT ><DT ><A HREF="r10138.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_enable_dma</SPAN ></SPAN ></A > -- channel to enable DMA on </DT ><DT ><A HREF="r10164.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_disable_dma</SPAN ></SPAN ></A > -- channel to disable DMA on </DT ><DT ><A HREF="r10190.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_set_dma_addr</SPAN ></SPAN ></A > -- load a 24bit DMA address </DT ><DT ><A HREF="r10223.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_get_dma_addr</SPAN ></SPAN ></A > -- load a 24bit DMA address </DT ><DT ><A HREF="r10249.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_set_dma_count</SPAN ></SPAN ></A > -- load a 16bit transfer count </DT ><DT ><A HREF="r10282.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_get_dma_residue</SPAN ></SPAN ></A > -- get the remaining bytes to transfer </DT ><DT ><A HREF="r10308.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_set_dma_io</SPAN ></SPAN ></A > -- set the port for an I/O transfer </DT ><DT ><A HREF="r10341.html" ><SPAN CLASS="phrase" ><SPAN CLASS="PHRASE" >mca_set_dma_mode</SPAN ></SPAN ></A > -- set the DMA mode </DT ></DL ></DIV ></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="r9658.html" ACCESSKEY="P" ><<< Previous</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="book1.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A 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