NAME
piix_sata_present_mask - determine present mask for SATA host controller
SYNOPSIS
unsigned int piix_sata_present_mask(struct ata_port * ap);
ARGUMENTS
ap
Target port
DESCRIPTION
Reads SATA PCI device's PCI config register Port Configuration and Status (PCS) to determine port and device availability.
LOCKING
None (inherited from caller).
RETURNS
determined present_mask
AUTHOR
Jeff Garzik
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Author.