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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>nand_read_page_hwecc_oob_first</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="MTD NAND Driver Programming Interface" /><link rel="up" href="ch11.html" title="Chapter 11. Internal Functions Provided" /><link rel="prev" href="re43.html" title="nand_read_page_hwecc" /><link rel="next" href="re45.html" title="nand_read_page_syndrome" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>nand_read_page_hwecc_oob_first</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re43.html">Prev</a> </td><th width="60%" align="center">Chapter 11. Internal Functions Provided</th><td width="20%" align="right"> <a accesskey="n" href="re45.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="nand_read_page_hwecc_oob_first"><a id="API-nand-read-page-hwecc-oob-first"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>nand_read_page_hwecc_oob_first —
[REPLACABLE] hw ecc, read oob first
</p></div><div class="refsynopsisdiv" title="Synopsis"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" class="funcprototype-table"><tr><td><code class="funcdef">int <b class="fsfunc">nand_read_page_hwecc_oob_first </b>(</code></td><td>struct mtd_info * <var class="pdparam">mtd</var>, </td></tr><tr><td> </td><td>struct nand_chip * <var class="pdparam">chip</var>, </td></tr><tr><td> </td><td>uint8_t * <var class="pdparam">buf</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">page</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2720446"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>mtd</code></em></span></dt><dd><p>
mtd info structure
</p></dd><dt><span class="term"><em class="parameter"><code>chip</code></em></span></dt><dd><p>
nand chip info structure
</p></dd><dt><span class="term"><em class="parameter"><code>buf</code></em></span></dt><dd><p>
buffer to store read data
</p></dd><dt><span class="term"><em class="parameter"><code>page</code></em></span></dt><dd><p>
page number to read
</p></dd></dl></div></div><div class="refsect1" title="Description"><a id="id2720522"></a><h2>Description</h2><p>
Hardware ECC for large page chips, require OOB to be read first.
For this ECC mode, the write_page method is re-used from ECC_HW.
These methods read/write ECC from the OOB area, unlike the
ECC_HW_SYNDROME support with multiple ECC steps, follows the
<span class="quote">“<span class="quote">infix ECC</span>”</span> scheme and reads/writes ECC from the data area, by
overwriting the NAND manufacturer bad block markings.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re43.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch11.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re45.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>nand_read_page_hwecc</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>nand_read_page_syndrome</span></td></tr></table></div></body></html>
