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.TH "ATA_TF_LOAD" "9" "09 October 2005" "" ""

.SH NAME
ata_tf_load \- send taskfile registers to host controller
.SH SYNOPSIS
"SYNOPSIS"
.sp
\fB
.sp
void ata_tf_load  (struct ata_port * \fIap\fB, struct ata_taskfile * \fItf\fB);
\fR
.SH "ARGUMENTS"
.TP
\fB\fIap\fB\fR
Port to which output is sent
.TP
\fB\fItf\fB\fR
ATA taskfile register set
.SH "DESCRIPTION"
.PP
Outputs ATA taskfile to standard ATA host controller using MMIO
or PIO as indicated by the ATA_FLAG_MMIO flag.
Writes the control, feature, nsect, lbal, lbam, and lbah registers.
Optionally (ATA_TFLAG_LBA48) writes hob_feature, hob_nsect,
hob_lbal, hob_lbam, and hob_lbah.
.PP
This function waits for idle (!BUSY and !DRQ) after writing
registers.  If the control register has a new value, this
function also waits for idle after writing control and before
writing the remaining registers.
.PP
May be used as the \fBtf_load\fR entry in ata_port_operations.
.SH "LOCKING"
.PP
Inherited from caller.