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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1"><title>Procyon AVRlib: ata.c Source File</title><link href="dox.css" rel="stylesheet" type="text/css"></head><body><!-- Generated by Doxygen 1.4.2 --><div class="qindex"><a class="qindex" href="main.html">Main Page</a> | <a class="qindex" href="modules.html">Modules</a> | <a class="qindex" href="annotated.html">Data Structures</a> | <a class="qindex" href="dirs.html">Directories</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="functions.html">Data Fields</a> | <a class="qindex" href="globals.html">Globals</a> | <a class="qindex" href="pages.html">Related Pages</a></div><h1>ata.c</h1><a href="ata_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment">00001 <span class="comment">/*! \file ata.c \brief IDE-ATA hard disk interface driver. */</span>00002 <span class="comment">//*****************************************************************************</span>00003 <span class="comment">//</span>00004 <span class="comment">// File Name : 'ata.c'</span>00005 <span class="comment">// Title : IDE-ATA interface driver for hard disks</span>00006 <span class="comment">// Author : Pascal Stang</span>00007 <span class="comment">// Date : 11/22/2000</span>00008 <span class="comment">// Revised : 4/19/2003</span>00009 <span class="comment">// Version : 0.3</span>00010 <span class="comment">// Target MCU : Atmel AVR Series</span>00011 <span class="comment">// Editor Tabs : 4</span>00012 <span class="comment">//</span>00013 <span class="comment">// NOTE: This code is currently below version 1.0, and therefore is considered</span>00014 <span class="comment">// to be lacking in some functionality or documentation, or may not be fully</span>00015 <span class="comment">// tested. Nonetheless, you can expect most functions to work.</span>00016 <span class="comment">//</span>00017 <span class="comment">// This code is distributed under the GNU Public License</span>00018 <span class="comment">// which can be found at http://www.gnu.org/licenses/gpl.txt</span>00019 <span class="comment">//</span>00020 <span class="comment">//*****************************************************************************</span>00021 00022 <span class="preprocessor">#ifndef WIN32</span>00023 <span class="preprocessor"></span><span class="preprocessor"> #include <avr/io.h></span>00024 <span class="preprocessor"> #include <avr/interrupt.h></span>00025 <span class="preprocessor"> #include <avr/pgmspace.h></span>00026 <span class="comment">// #include <stdio.h></span>00027 <span class="preprocessor">#endif</span>00028 <span class="preprocessor"></span><span class="preprocessor">#include "<a class="code" href="global_8h.html">global.h</a>"</span>00029 <span class="preprocessor">#include "<a class="code" href="timer_8h.html">timer.h</a>"</span>00030 <span class="preprocessor">#include "<a class="code" href="rprintf_8h.html">rprintf.h</a>"</span>00031 00032 <span class="preprocessor">#include "<a class="code" href="ata_8h.html">ata.h</a>"</span>00033 00034 <span class="comment">//#define DEBUG_ATA 1</span>00035 00036 <span class="comment">// global variables</span>00037 00038 <span class="comment">// drive information</span>00039 typeDriveInfo ataDriveInfo;00040 00041 00042 <span class="keywordtype">void</span> ataInit(<span class="keywordtype">void</span>)00043 {00044 00045 }00046 00047 <span class="keywordtype">void</span> ataDriveInit(<span class="keywordtype">void</span>)00048 {00049 u08 i;00050 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>* buffer = (<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*) SECTOR_BUFFER_ADDR;00051 00052 <span class="comment">// read drive identity</span>00053 <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"\r\nScanning IDE interface...\r\n"</span>);00054 <span class="comment">// Wait for drive to be ready</span>00055 ataStatusWait(ATA_SR_BSY, ATA_SR_BSY);00056 <span class="comment">// issue identify command</span>00057 ataWriteByte(ATA_REG_CMDSTATUS1, 0xEC);00058 <span class="comment">// wait for drive to request data transfer</span>00059 ataStatusWait(ATA_SR_DRQ, ATA_SR_DRQ);00060 <a class="code" href="group__timer.html#ga10">timerPause</a>(200);00061 <span class="comment">// read in the data</span>00062 ataReadDataBuffer(buffer, 512);00063 00064 <span class="comment">// set local drive info parameters</span>00065 ataDriveInfo.cylinders = *( ((<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>*) buffer) + ATA_IDENT_CYLINDERS );00066 ataDriveInfo.heads = *( ((<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>*) buffer) + ATA_IDENT_HEADS );00067 ataDriveInfo.sectors = *( ((<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>*) buffer) + ATA_IDENT_SECTORS );00068 ataDriveInfo.LBAsupport = *( ((<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>*) buffer) + ATA_IDENT_FIELDVALID );00069 ataDriveInfo.sizeinsectors = *( (<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>*) (buffer + ATA_IDENT_LBASECTORS*2) );00070 <span class="comment">// copy model string</span>00071 <span class="keywordflow">for</span>(i=0; i<40; i+=2)00072 {00073 <span class="comment">// correct for byte order</span>00074 ataDriveInfo.model[i ] = buffer[(ATA_IDENT_MODEL*2) + i + 1];00075 ataDriveInfo.model[i+1] = buffer[(ATA_IDENT_MODEL*2) + i ];00076 }00077 <span class="comment">// terminate string</span>00078 ataDriveInfo.model[40] = 0;00079 00080 <span class="comment">// process and print info</span>00081 <span class="keywordflow">if</span>(ataDriveInfo.LBAsupport)00082 {00083 <span class="comment">// LBA support</span>00084 rprintf(<span class="stringliteral">"Drive 0: %dMB "</span>, ataDriveInfo.sizeinsectors/(1000000/512) );00085 rprintf(<span class="stringliteral">"LBA mode -- MODEL: "</span>);00086 }00087 <span class="keywordflow">else</span>00088 {00089 <span class="comment">// CHS, no LBA support</span>00090 <span class="comment">// calculate drive size</span>00091 ataDriveInfo.sizeinsectors = (<span class="keywordtype">unsigned</span> long) ataDriveInfo.cylinders*00092 ataDriveInfo.heads*ataDriveInfo.sectors;00093 rprintf(<span class="stringliteral">"Drive 0: %dMB "</span>, ataDriveInfo.sizeinsectors/(1000000/512) );00094 rprintf(<span class="stringliteral">"CHS mode C=%d H=%d S=%d -- MODEL: "</span>, ataDriveInfo.cylinders, ataDriveInfo.heads, ataDriveInfo.sectors );00095 }00096 <span class="comment">// print model information </span>00097 <a class="code" href="group__rprintf.html#ga2">rprintfStr</a>(ataDriveInfo.model); <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>();00098 00099 <span class="comment">// initialize local disk parameters</span>00100 <span class="comment">//ataDriveInfo.cylinders = ATA_DISKPARM_CLYS;</span>00101 <span class="comment">//ataDriveInfo.heads = ATA_DISKPARM_HEADS;</span>00102 <span class="comment">//ataDriveInfo.sectors = ATA_DISKPARM_SECTORS;</span>00103 00104 }00105 00106 <span class="keywordtype">void</span> ataDiskErr(<span class="keywordtype">void</span>)00107 {00108 <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> b;00109 00110 b = ataReadByte(ATA_REG_ERROR); 00111 <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">"ATA Error: "</span>); 00112 <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(b); 00113 <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>();00114 }00115 00116 <span class="keywordtype">void</span> ataSetDrivePowerMode(u08 DriveNo, u08 mode, u08 timeout)00117 {00118 <span class="comment">// select drive</span>00119 ataDriveSelect(DriveNo);00120 <span class="comment">// Wait for drive to be ready</span>00121 ataStatusWait(ATA_SR_BSY, ATA_SR_BSY);00122 00123 <span class="comment">// set mode</span>00124 <span class="keywordflow">switch</span>(mode)00125 {00126 <span class="keywordflow">case</span> ATA_DISKMODE_SPINDOWN: ataWriteByte(ATA_REG_CMDSTATUS1, ATA_CMD_SPINDOWN); <span class="keywordflow">break</span>;00127 <span class="keywordflow">case</span> ATA_DISKMODE_SPINUP: ataWriteByte(ATA_REG_CMDSTATUS1, ATA_CMD_SPINUP); <span class="keywordflow">break</span>;00128 <span class="keywordflow">case</span> ATA_DISKMODE_SETTIMEOUT:00129 ataWriteByte(ATA_REG_SECCOUNT, timeout);00130 ataWriteByte(ATA_REG_CMDSTATUS1, ATA_CMD_IDLE_5SU);00131 <span class="keywordflow">break</span>;00132 <span class="keywordflow">case</span> ATA_DISKMODE_SLEEP: ataWriteByte(ATA_REG_CMDSTATUS1, ATA_CMD_SLEEP); <span class="keywordflow">break</span>;00133 <span class="keywordflow">default</span>:00134 <span class="keywordflow">break</span>;00135 }00136 }00137 00138 <span class="keywordtype">void</span> ataPrintSector( u08 *Buffer)00139 {00140 u08 i;00141 u16 j;00142 u08 *buf;00143 u08 s;00144 00145 buf = Buffer;00146 00147 <span class="comment">// print the low order address indicies</span>00148 <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">" 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 0123456789ABCDEF\r\n"</span>);00149 <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">" ----------------------------------------------- ---- ASCII -----\r\n"</span>);00150 00151 <span class="comment">// print the data</span>00152 <span class="keywordflow">for</span>(j=0; j<0x20; j++)00153 {00154 <span class="comment">// print the high order address index for this line</span>00155 <a class="code" href="group__rprintf.html#ga8">rprintfu16</a>(j<<4);00156 <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">" "</span>);00157 00158 <span class="comment">// print the hex data</span>00159 <span class="keywordflow">for</span>(i=0; i<0x10; i++)00160 {00161 <a class="code" href="group__rprintf.html#ga7">rprintfu08</a>(buf[(j<<4)+i]);00162 <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">" "</span>);00163 }00164 00165 <span class="comment">// leave some space</span>00166 <a class="code" href="group__rprintf.html#ga15">rprintfProgStrM</a>(<span class="stringliteral">" "</span>);00167 00168 <span class="comment">// print the ascii data</span>00169 <span class="keywordflow">for</span>(i=0; i<0x10; i++)00170 {00171 s = buf[(j<<4)+i]; 00172 <span class="comment">// make sure character is printable</span>00173 <span class="keywordflow">if</span>(s >= 0x20)00174 {00175 <a class="code" href="group__rprintf.html#ga1">rprintfChar</a>(s);00176 }00177 <span class="keywordflow">else</span>00178 {00179 <a class="code" href="group__rprintf.html#ga1">rprintfChar</a>(0x20);00180 }00181 00182 }00183 <a class="code" href="group__rprintf.html#ga5">rprintfCRLF</a>();00184 }00185 }00186 00187 <span class="keywordtype">void</span> ataReadDataBuffer(u08 *Buffer, u16 numBytes)00188 {00189 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i;00190 00191 <span class="comment">//sbi(MCUCR, SRW); // enable RAM waitstate</span>00192 00193 <span class="comment">// read data from drive</span>00194 <span class="keywordflow">for</span> (i=0; i<(numBytes/16); i++)00195 {00196 <span class="comment">// optimize by reading 16 bytes in-line before looping</span>00197 *Buffer++ = *((<span class="keyword">volatile</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*) ATA_REG_BASE + ATA_REG_DATAL);00198 *Buffer++ = *((<span class="keyword">volatile</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*) ATA_REG_BASE + ATA_REG_DATAH);00199 *Buffer++ = *((<span class="keyword">volatile</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>*) ATA_REG_BASE + ATA_REG_DATAL);⌨️ 快捷键说明
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