'\" t
.\"     Title: ata_exec_internal_sg
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: libata Core Internals
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "ATA_EXEC_INTERNAL_SG" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "libata Core Internals"
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.SH "NAME"
ata_exec_internal_sg \- execute libata internal command
.SH "SYNOPSIS"
.HP \w'unsigned\ ata_exec_internal_sg('u
.BI "unsigned ata_exec_internal_sg(struct\ ata_device\ *\ " "dev" ", struct\ ata_taskfile\ *\ " "tf" ", const\ u8\ *\ " "cdb" ", int\ " "dma_dir" ", struct\ scatterlist\ *\ " "sgl" ", unsigned\ int\ " "n_elem" ", unsigned\ long\ " "timeout" ");"
.SH "ARGUMENTS"
.PP
\fIdev\fR
.RS 4
Device to which the command is sent
.RE
.PP
\fItf\fR
.RS 4
Taskfile registers for the command and the result
.RE
.PP
\fIcdb\fR
.RS 4
CDB for packet command
.RE
.PP
\fIdma_dir\fR
.RS 4
Data transfer direction of the command
.RE
.PP
\fIsgl\fR
.RS 4
sg list for the data buffer of the command
.RE
.PP
\fIn_elem\fR
.RS 4
Number of sg entries
.RE
.PP
\fItimeout\fR
.RS 4
Timeout in msecs (0 for default)
.RE
.SH "DESCRIPTION"
.PP
Executes libata internal command with timeout\&.
\fItf\fR
contains command on entry and result on return\&. Timeout and error conditions are reported via return value\&. No recovery action is taken after a command times out\&. It\*(Aqs caller\*(Aqs duty to clean up after timeout\&.
.PP
LOCKING: None\&. Should be called with kernel context, might sleep\&.
.SH "RETURN"
.PP
Zero on success, AC_ERR_* mask on failure
.SH "AUTHOR"
.PP
\fBJeff Garzik\fR
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br