Commit 9b3773db authored by Michal Berger's avatar Michal Berger Committed by Tomasz Zawadzki
Browse files

scripts/common: Cache pci modalias 



Additionally, include the first resolved alias of the module.

Signed-off-by: default avatarMichal Berger <michalx.berger@intel.com>
Change-Id: I71c7c15398ea36f3dea3340f5c98568ff6b6a68a
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7848


Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarJim Harris <james.r.harris@intel.com>
Reviewed-by: default avatarTomasz Zawadzki <tomasz.zawadzki@intel.com>
parent 5f61a0c9

scripts/common.sh

+25 −4
Original line number Diff line number Diff line
@@ -28,11 +28,23 @@ function pci_can_use() { 
	return 1

}



resolve_mod() {

	local mod=$1 aliases=()



	if aliases=($(modprobe -R "$mod")); then

		echo "${aliases[0]}"

	else

		echo "unknown"

	fi 2> /dev/null

}



cache_pci_init() {

	local -gA pci_bus_cache

	local -gA pci_ids_vendor

	local -gA pci_ids_device

	local -gA pci_bus_driver

	local -gA pci_mod_driver

	local -gA pci_mod_resolved



	[[ -z ${pci_bus_cache[*]} || $CMD == reset ]] || return 1
@@ -40,10 +52,12 @@ cache_pci_init() { 
	pci_bus_ids_vendor=()

	pci_bus_ids_device=()

	pci_bus_driver=()

	pci_mod_driver=()

	pci_mod_resolved=()

}



cache_pci() {

	local pci=$1 class=$2 vendor=$3 device=$4 driver=$5

	local pci=$1 class=$2 vendor=$3 device=$4 driver=$5 mod=$6



	if [[ -n $class ]]; then

		class=0x${class/0x/}
@@ -59,6 +73,10 @@ cache_pci() { 
	if [[ -n $driver ]]; then

		pci_bus_driver["$pci"]=$driver

	fi

	if [[ -n $mod ]]; then

		pci_mod_driver["$pci"]=$mod

		pci_mod_resolved["$pci"]=$(resolve_mod "$mod")

	fi

}



cache_pci_bus_sysfs() {
@@ -67,17 +85,20 @@ cache_pci_bus_sysfs() { 
	cache_pci_init || return 0



	local pci

	local class vendor device driver

	local class vendor device driver mod



	for pci in /sys/bus/pci/devices/*; do

		class=$(< "$pci/class") vendor=$(< "$pci/vendor") device=$(< "$pci/device") driver=""

		class=$(< "$pci/class") vendor=$(< "$pci/vendor") device=$(< "$pci/device") driver="" mod=""

		if [[ -e $pci/driver ]]; then

			driver=$(readlink -f "$pci/driver")

			driver=${driver##*/}

		else

			driver=unbound

		fi

		cache_pci "${pci##*/}" "$class" "$vendor" "$device" "$driver"

		if [[ -e $pci/modalias ]]; then

			mod=$(< "$pci/modalias")

		fi

		cache_pci "${pci##*/}" "$class" "$vendor" "$device" "$driver" "$mod"

	done

}