NAME
ata_do_simple_cmd - Set port up for dma.
SYNOPSIS
int ata_do_simple_cmd (struct ata_port * ap, struct ata_device * dev,
u8 cmd);
ARGUMENTS
ap Port to initialize
dev -- undescribed --
cmd -- undescribed --
DESCRIPTION
Called just after data structures for each port are initialized.
Allocates space for PRD table.
May be used as the port_start entry in ata_port_operations.
LOCKING
Inherited from caller.
AUTHOR
Jeff Garzik.