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scripts/common: Cache pci modalias

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Additionally, include the first resolved alias of the module.

Signed-off-by: Michal Berger <michalx.berger@intel.com>
Change-Id: I71c7c15398ea36f3dea3340f5c98568ff6b6a68a
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/7848
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
This commit is contained in:
Michal Berger 2021-05-11 12:07:09 +02:00 committed by Tomasz Zawadzki
parent 5f61a0c919
commit 9b3773db68
1 changed files with 25 additions and 4 deletions
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29
scripts/common.sh
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@ -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
}