- pcimap not used when lspci invoked with -n

[projects/geninitrd.git] / mod-sata.sh

#!/bin/sh
#
# geninitrd mod: sata

# private until only mod-sata uses the function
find_modules_by_class() {
	local class=$1

	local pcimap="/lib/modules/$kernel/modules.pcimap"
	# no pcimap, nothing to lookup from
	if [ ! -f "$pcimap" ]; then
		return
	fi

	if [ ! -x /sbin/lspci ]; then
		warn "Failed to execute /sbin/lspci. Is pciutils package installed?"
		return
	fi

	set -- $(/sbin/lspci -n | awk -vclass=$class '$2 == class":" {split($3, p, ":"); printf("0x0000%s 0x0000%s\n", p[1], p[2])}')
	awk -vvendor=$1 -vdevice=$2 '$2 == vendor && $3 == device {print $1}' $pcimap
}

find_modules_sata() {
	debug "Finding SATA modules (class=0x0106)"

	# Classes (we want only 0106)
	# http://pci-ids.ucw.cz/read/PD/01
	# 0100 - SCSI
	# 0101 - IDE/PATA
	# 0106 - SATA/AHCI
	# 0107 - SAS
	local module
	module=$(find_modules_by_class 0106)

	if [ "$module" ]; then
		# FIXME: how to handle if multiple modules returned?
		# i.e two modules can do same id
		find_module "$module"
	fi
}