'\" t
.\"     Title: nand_read_page_hwecc_oob_first
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: July 2017
.\"    Manual: Internal Functions Provided
.\"    Source: Kernel Hackers Manual 4.12.2
.\"  Language: English
.\"
.TH "NAND_READ_PAGE_HWECC" "9" "July 2017" "Kernel Hackers Manual 4\&.12\&" "Internal Functions Provided"
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.SH "NAME"
nand_read_page_hwecc_oob_first \- [REPLACEABLE] hw ecc, read oob first
.SH "SYNOPSIS"
.HP \w'int\ nand_read_page_hwecc_oob_first('u
.BI "int nand_read_page_hwecc_oob_first(struct\ mtd_info\ *\ " "mtd" ", struct\ nand_chip\ *\ " "chip" ", uint8_t\ *\ " "buf" ", int\ " "oob_required" ", int\ " "page" ");"
.SH "ARGUMENTS"
.PP
\fIstruct mtd_info * mtd\fR
.RS 4
mtd info structure
.RE
.PP
\fIstruct nand_chip * chip\fR
.RS 4
nand chip info structure
.RE
.PP
\fIuint8_t * buf\fR
.RS 4
buffer to store read data
.RE
.PP
\fIint oob_required\fR
.RS 4
caller requires OOB data read to chip\->oob_poi
.RE
.PP
\fIint page\fR
.RS 4
page number to read
.RE
.SH "DESCRIPTION"
.PP
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
\(lqinfix ECC\(rq
scheme and reads/writes ECC from the data area, by overwriting the NAND manufacturer bad block markings\&.
.SH "AUTHOR"
.PP
\fBThomas Gleixner\fR <\&tglx@linutronix.de\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br