'\" t
.\"     Title: sata_link_hardreset
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: September 2017
.\"    Manual: libata Library
.\"    Source: Kernel Hackers Manual 4.12.13
.\"  Language: English
.\"
.TH "SATA_LINK_HARDRESET" "9" "September 2017" "Kernel Hackers Manual 4\&.12\&" "libata Library"
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.SH "NAME"
sata_link_hardreset \- reset link via SATA phy reset
.SH "SYNOPSIS"
.HP \w'int\ sata_link_hardreset('u
.BI "int sata_link_hardreset(struct\ ata_link\ *\ " "link" ", const\ unsigned\ long\ *\ " "timing" ", unsigned\ long\ " "deadline" ", bool\ *\ " "online" ", int\ (*" "check_ready" ")\ (struct\ ata_link\ *));"
.SH "ARGUMENTS"
.PP
\fIstruct ata_link * link\fR
.RS 4
link to reset
.RE
.PP
\fIconst unsigned long * timing\fR
.RS 4
timing parameters { interval, duration, timeout } in msec
.RE
.PP
\fIunsigned long deadline\fR
.RS 4
deadline jiffies for the operation
.RE
.PP
\fIbool * online\fR
.RS 4
optional out parameter indicating link onlineness
.RE
.PP
\fIint (*)(struct ata_link *) check_ready\fR
.RS 4
optional callback to check link readiness
.RE
.SH "DESCRIPTION"
.PP
SATA phy\-reset
\fIlink\fR
using DET bits of SControl register\&. After hardreset, link readiness is waited upon using
\fBata_wait_ready\fR
if
\fIcheck_ready\fR
is specified\&. LLDs are allowed to not specify
\fIcheck_ready\fR
and wait itself after this function returns\&. Device classification is LLD\*(Aqs responsibility\&.
.PP
*\fIonline\fR
is set to one iff reset succeeded and
\fIlink\fR
is online after reset\&.
.PP
LOCKING: Kernel thread context (may sleep)
.SH "RETURN"
.PP
0 on success, \-errno otherwise\&.
.SH "AUTHOR"
.PP
\fBJeff Garzik\fR
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br