| #!/bin/sh |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (C) 2025 Bartosz Golaszewski <brgl@bgdev.pl> |
| # Copyright (C) 2025 Koichiro Den <koichiro.den@canonical.com> |
| |
| BASE_DIR=$(dirname "$0") |
| CONFIGFS_SIM_DIR="/sys/kernel/config/gpio-sim" |
| CONFIGFS_AGG_DIR="/sys/kernel/config/gpio-aggregator" |
| SYSFS_AGG_DIR="/sys/bus/platform/drivers/gpio-aggregator" |
| MODULE="gpio-aggregator" |
| |
| fail() { |
| echo "$*" >&2 |
| echo "GPIO $MODULE test FAIL" |
| exit 1 |
| } |
| |
| skip() { |
| echo "$*" >&2 |
| echo "GPIO $MODULE test SKIP" |
| exit 4 |
| } |
| |
| # gpio-sim |
| sim_enable_chip() { |
| local CHIP=$1 |
| |
| echo 1 > "$CONFIGFS_SIM_DIR/$CHIP/live" || fail "Unable to enable the chip" |
| } |
| |
| sim_disable_chip() { |
| local CHIP=$1 |
| |
| echo 0 > "$CONFIGFS_SIM_DIR/$CHIP/live" || fail "Unable to disable the chip" |
| } |
| |
| sim_configfs_cleanup() { |
| local NOCHECK=${1:-0} |
| |
| for CHIP_DIR in "$CONFIGFS_SIM_DIR"/*; do |
| [ -d "$CHIP_DIR" ] || continue |
| echo 0 > "$CHIP_DIR/live" |
| find "$CHIP_DIR" -depth -type d -exec rmdir {} \; |
| done |
| [ "$NOCHECK" -eq 1 ] && return; |
| remaining=$(find "$CONFIGFS_SIM_DIR" -mindepth 1 -type d 2> /dev/null) |
| if [ -n "$remaining" ]; then |
| fail "Directories remain in $CONFIGFS_SIM_DIR: $remaining" |
| fi |
| } |
| |
| sim_get_chip_label() { |
| local CHIP=$1 |
| local BANK=$2 |
| local CHIP_NAME=$(cat "$CONFIGFS_SIM_DIR/$CHIP/$BANK/chip_name" 2> /dev/null) || \ |
| fail "Unable to read the chip name from configfs" |
| |
| $BASE_DIR/gpio-chip-info "/dev/$CHIP_NAME" label || \ |
| fail "Unable to read the chip label from the character device" |
| } |
| |
| # gpio-aggregator |
| agg_create_chip() { |
| local CHIP=$1 |
| |
| mkdir "$CONFIGFS_AGG_DIR/$CHIP" |
| } |
| |
| agg_remove_chip() { |
| local CHIP=$1 |
| |
| find "$CONFIGFS_AGG_DIR/$CHIP/" -depth -type d -exec rmdir {} \; || \ |
| fail "Unable to remove $CONFIGFS_AGG_DIR/$CHIP" |
| } |
| |
| agg_create_line() { |
| local CHIP=$1 |
| local LINE=$2 |
| |
| mkdir "$CONFIGFS_AGG_DIR/$CHIP/$LINE" |
| } |
| |
| agg_remove_line() { |
| local CHIP=$1 |
| local LINE=$2 |
| |
| rmdir "$CONFIGFS_AGG_DIR/$CHIP/$LINE" |
| } |
| |
| agg_set_key() { |
| local CHIP=$1 |
| local LINE=$2 |
| local KEY=$3 |
| |
| echo "$KEY" > "$CONFIGFS_AGG_DIR/$CHIP/$LINE/key" || fail "Unable to set the lookup key" |
| } |
| |
| agg_set_offset() { |
| local CHIP=$1 |
| local LINE=$2 |
| local OFFSET=$3 |
| |
| echo "$OFFSET" > "$CONFIGFS_AGG_DIR/$CHIP/$LINE/offset" || \ |
| fail "Unable to set the lookup offset" |
| } |
| |
| agg_set_line_name() { |
| local CHIP=$1 |
| local LINE=$2 |
| local NAME=$3 |
| |
| echo "$NAME" > "$CONFIGFS_AGG_DIR/$CHIP/$LINE/name" || fail "Unable to set the line name" |
| } |
| |
| agg_enable_chip() { |
| local CHIP=$1 |
| |
| echo 1 > "$CONFIGFS_AGG_DIR/$CHIP/live" || fail "Unable to enable the chip" |
| } |
| |
| agg_disable_chip() { |
| local CHIP=$1 |
| |
| echo 0 > "$CONFIGFS_AGG_DIR/$CHIP/live" || fail "Unable to disable the chip" |
| } |
| |
| agg_configfs_cleanup() { |
| local NOCHECK=${1:-0} |
| |
| for CHIP_DIR in "$CONFIGFS_AGG_DIR"/*; do |
| [ -d "$CHIP_DIR" ] || continue |
| echo 0 > "$CHIP_DIR/live" 2> /dev/null |
| find "$CHIP_DIR" -depth -type d -exec rmdir {} \; |
| done |
| [ "$NOCHECK" -eq 1 ] && return; |
| remaining=$(find "$CONFIGFS_AGG_DIR" -mindepth 1 -type d 2> /dev/null) |
| if [ -n "$remaining" ]; then |
| fail "Directories remain in $CONFIGFS_AGG_DIR: $remaining" |
| fi |
| } |
| |
| agg_configfs_dev_name() { |
| local CHIP=$1 |
| |
| cat "$CONFIGFS_AGG_DIR/$CHIP/dev_name" 2> /dev/null || \ |
| fail "Unable to read the device name from configfs" |
| } |
| |
| agg_configfs_chip_name() { |
| local CHIP=$1 |
| local DEV_NAME=$(agg_configfs_dev_name "$CHIP") |
| local CHIP_LIST=$(find "/sys/devices/platform/$DEV_NAME" \ |
| -maxdepth 1 -type d -name "gpiochip[0-9]*" 2> /dev/null) |
| local CHIP_COUNT=$(echo "$CHIP_LIST" | wc -l) |
| |
| if [ -z "$CHIP_LIST" ]; then |
| fail "No gpiochip in /sys/devices/platform/$DEV_NAME/" |
| elif [ "$CHIP_COUNT" -ne 1 ]; then |
| fail "Multiple gpiochips unexpectedly found: $CHIP_LIST" |
| fi |
| basename "$CHIP_LIST" |
| } |
| |
| agg_get_chip_num_lines() { |
| local CHIP=$1 |
| local N_DIR=$(ls -d $CONFIGFS_AGG_DIR/$CHIP/line[0-9]* 2> /dev/null | wc -l) |
| local N_LINES |
| |
| if [ "$(cat $CONFIGFS_AGG_DIR/$CHIP/live)" = 0 ]; then |
| echo "$N_DIR" |
| else |
| N_LINES=$( |
| $BASE_DIR/gpio-chip-info \ |
| "/dev/$(agg_configfs_chip_name "$CHIP")" num-lines |
| ) || fail "Unable to read the number of lines from the character device" |
| if [ $N_DIR != $N_LINES ]; then |
| fail "Discrepancy between two sources for the number of lines" |
| fi |
| echo "$N_LINES" |
| fi |
| } |
| |
| agg_get_chip_label() { |
| local CHIP=$1 |
| |
| $BASE_DIR/gpio-chip-info "/dev/$(agg_configfs_chip_name "$CHIP")" label || \ |
| fail "Unable to read the chip label from the character device" |
| } |
| |
| agg_get_line_name() { |
| local CHIP=$1 |
| local OFFSET=$2 |
| local NAME_CONFIGFS=$(cat "$CONFIGFS_AGG_DIR/$CHIP/line${OFFSET}/name") |
| local NAME_CDEV |
| |
| if [ "$(cat "$CONFIGFS_AGG_DIR/$CHIP/live")" = 0 ]; then |
| echo "$NAME_CONFIGFS" |
| else |
| NAME_CDEV=$( |
| $BASE_DIR/gpio-line-name \ |
| "/dev/$(agg_configfs_chip_name "$CHIP")" "$OFFSET" |
| ) || fail "Unable to read the line name from the character device" |
| if [ "$NAME_CONFIGFS" != "$NAME_CDEV" ]; then |
| fail "Discrepancy between two sources for the name of line" |
| fi |
| echo "$NAME_CDEV" |
| fi |
| } |
| |
| |
| # Load the modules. This will pull in configfs if needed too. |
| modprobe gpio-sim || skip "unable to load the gpio-sim module" |
| modprobe gpio-aggregator || skip "unable to load the gpio-aggregator module" |
| |
| # Make sure configfs is mounted at /sys/kernel/config. Wait a bit if needed. |
| for IDX in $(seq 5); do |
| if [ "$IDX" -eq "5" ]; then |
| skip "configfs not mounted at /sys/kernel/config" |
| fi |
| |
| mountpoint -q /sys/kernel/config && break |
| sleep 0.1 |
| done |
| |
| # If the module was already loaded: remove all previous chips |
| agg_configfs_cleanup |
| sim_configfs_cleanup |
| |
| trap "exit 1" SIGTERM SIGINT |
| trap "agg_configfs_cleanup 1; sim_configfs_cleanup 1" EXIT |
| |
| # Use gpio-sim chips as the test backend |
| for CHIP in $(seq -f "chip%g" 0 1); do |
| mkdir $CONFIGFS_SIM_DIR/$CHIP |
| for BANK in $(seq -f "bank%g" 0 1); do |
| mkdir -p "$CONFIGFS_SIM_DIR/$CHIP/$BANK" |
| echo "${CHIP}_${BANK}" > "$CONFIGFS_SIM_DIR/$CHIP/$BANK/label" || \ |
| fail "unable to set the chip label" |
| echo 16 > "$CONFIGFS_SIM_DIR/$CHIP/$BANK/num_lines" || \ |
| fail "unable to set the number of lines" |
| for IDX in $(seq 0 15); do |
| LINE_NAME="${CHIP}${BANK}_${IDX}" |
| LINE_DIR="$CONFIGFS_SIM_DIR/$CHIP/$BANK/line$IDX" |
| mkdir -p $LINE_DIR |
| echo "$LINE_NAME" > "$LINE_DIR/name" || fail "unable to set the line name" |
| done |
| done |
| sim_enable_chip "$CHIP" |
| done |
| |
| echo "1. GPIO aggregator creation/deletion" |
| |
| echo "1.1. Creation/deletion via configfs" |
| |
| echo "1.1.1. Minimum creation/deletion" |
| agg_create_chip agg0 |
| agg_create_line agg0 line0 |
| agg_set_key agg0 line0 "$(sim_get_chip_label chip0 bank0)" |
| agg_set_offset agg0 line0 5 |
| agg_set_line_name agg0 line0 test0 |
| agg_enable_chip agg0 |
| test "$(cat "$CONFIGFS_AGG_DIR/agg0/live")" = 1 || fail "chip unexpectedly dead" |
| test "$(agg_get_chip_label agg0)" = "$(agg_configfs_dev_name agg0)" || \ |
| fail "label is inconsistent" |
| test "$(agg_get_chip_num_lines agg0)" = "1" || fail "number of lines is not 1" |
| test "$(agg_get_line_name agg0 0)" = "test0" || fail "line name is unset" |
| agg_disable_chip agg0 |
| agg_remove_line agg0 line0 |
| agg_remove_chip agg0 |
| |
| echo "1.1.2. Complex creation/deletion" |
| agg_create_chip agg0 |
| agg_create_line agg0 line0 |
| agg_create_line agg0 line1 |
| agg_create_line agg0 line2 |
| agg_create_line agg0 line3 |
| agg_set_key agg0 line0 "$(sim_get_chip_label chip0 bank0)" |
| agg_set_key agg0 line1 "$(sim_get_chip_label chip0 bank1)" |
| agg_set_key agg0 line2 "$(sim_get_chip_label chip1 bank0)" |
| agg_set_key agg0 line3 "$(sim_get_chip_label chip1 bank1)" |
| agg_set_offset agg0 line0 1 |
| agg_set_offset agg0 line1 3 |
| agg_set_offset agg0 line2 5 |
| agg_set_offset agg0 line3 7 |
| agg_set_line_name agg0 line0 test0 |
| agg_set_line_name agg0 line1 test1 |
| agg_set_line_name agg0 line2 test2 |
| agg_set_line_name agg0 line3 test3 |
| agg_enable_chip agg0 |
| test "$(cat "$CONFIGFS_AGG_DIR/agg0/live")" = 1 || fail "chip unexpectedly dead" |
| test "$(agg_get_chip_label agg0)" = "$(agg_configfs_dev_name agg0)" || \ |
| fail "label is inconsistent" |
| test "$(agg_get_chip_num_lines agg0)" = "4" || fail "number of lines is not 1" |
| test "$(agg_get_line_name agg0 0)" = "test0" || fail "line name is unset" |
| test "$(agg_get_line_name agg0 1)" = "test1" || fail "line name is unset" |
| test "$(agg_get_line_name agg0 2)" = "test2" || fail "line name is unset" |
| test "$(agg_get_line_name agg0 3)" = "test3" || fail "line name is unset" |
| agg_disable_chip agg0 |
| agg_remove_line agg0 line0 |
| agg_remove_line agg0 line1 |
| agg_remove_line agg0 line2 |
| agg_remove_line agg0 line3 |
| agg_remove_chip agg0 |
| |
| echo "1.1.3. Can't instantiate a chip without any line" |
| agg_create_chip agg0 |
| echo 1 > "$CONFIGFS_AGG_DIR/agg0/live" 2> /dev/null && fail "chip unexpectedly enabled" |
| test "$(cat "$CONFIGFS_AGG_DIR/agg0/live")" = 0 || fail "chip unexpectedly alive" |
| agg_remove_chip agg0 |
| |
| echo "1.1.4. Can't instantiate a chip with invalid configuration" |
| agg_create_chip agg0 |
| agg_create_line agg0 line0 |
| agg_set_key agg0 line0 "chipX_bankX" |
| agg_set_offset agg0 line0 99 |
| agg_set_line_name agg0 line0 test0 |
| echo 1 > "$CONFIGFS_AGG_DIR/agg0/live" 2> /dev/null && fail "chip unexpectedly enabled" |
| test "$(cat "$CONFIGFS_AGG_DIR/agg0/live")" = 0 || fail "chip unexpectedly alive" |
| agg_remove_line agg0 line0 |
| agg_remove_chip agg0 |
| |
| echo "1.1.5. Can't instantiate a chip asynchronously via deferred probe" |
| agg_create_chip agg0 |
| agg_create_line agg0 line0 |
| agg_set_key agg0 line0 "chip0_bank0" |
| agg_set_offset agg0 line0 5 |
| agg_set_line_name agg0 line0 test0 |
| sim_disable_chip chip0 |
| echo 1 > "$CONFIGFS_AGG_DIR/agg0/live" 2> /dev/null && fail "chip unexpectedly enabled" |
| test "$(cat "$CONFIGFS_AGG_DIR/agg0/live")" = 0 || fail "chip unexpectedly alive" |
| sim_enable_chip chip0 |
| sleep 1 |
| test "$(cat "$CONFIGFS_AGG_DIR/agg0/live")" = 0 || \ |
| fail "chip unexpectedly transitioned to 'live' state" |
| agg_remove_line agg0 line0 |
| agg_remove_chip agg0 |
| |
| echo "1.1.6. Can't instantiate a chip with _sysfs prefix" |
| mkdir "$CONFIGFS_AGG_DIR/_sysfs" 2> /dev/null && fail "chip _sysfs unexpectedly created" |
| mkdir "$CONFIGFS_AGG_DIR/_sysfs.foo" 2> /dev/null && fail "chip _sysfs.foo unexpectedly created" |
| |
| echo "1.2. Creation/deletion via sysfs" |
| |
| echo "1.2.1. Minimum creation/deletion" |
| echo "chip0_bank0 0" > "$SYSFS_AGG_DIR/new_device" |
| CHIPNAME=$(agg_configfs_chip_name _sysfs.0) |
| test "$(cat "$CONFIGFS_AGG_DIR/_sysfs.0/live")" = 1 || fail "chip unexpectedly dead" |
| test "$(agg_get_chip_label _sysfs.0)" = "$(agg_configfs_dev_name _sysfs.0)" || \ |
| fail "label is inconsistent" |
| test "$(agg_get_chip_num_lines _sysfs.0)" = "1" || fail "number of lines is not 1" |
| test "$(agg_get_line_name _sysfs.0 0)" = "" || fail "line name is unset" |
| echo "$(agg_configfs_dev_name _sysfs.0)" > "$SYSFS_AGG_DIR/delete_device" |
| test -d $CONFIGFS_AGG_DIR/_sysfs.0 && fail "_sysfs.0 unexpectedly remains" |
| test -d /dev/${CHIPNAME} && fail "/dev/${CHIPNAME} unexpectedly remains" |
| |
| echo "1.2.2. Complex creation/deletion" |
| echo "chip0bank0_0 chip1_bank1 10-11" > "$SYSFS_AGG_DIR/new_device" |
| CHIPNAME=$(agg_configfs_chip_name _sysfs.0) |
| test "$(cat "$CONFIGFS_AGG_DIR/_sysfs.0/live")" = 1 || fail "chip unexpectedly dead" |
| test "$(agg_get_chip_label _sysfs.0)" = "$(agg_configfs_dev_name _sysfs.0)" || \ |
| fail "label is inconsistent" |
| test "$(agg_get_chip_num_lines _sysfs.0)" = "3" || fail "number of lines is not 3" |
| test "$(agg_get_line_name _sysfs.0 0)" = "" || fail "line name is unset" |
| test "$(agg_get_line_name _sysfs.0 1)" = "" || fail "line name is unset" |
| test "$(agg_get_line_name _sysfs.0 2)" = "" || fail "line name is unset" |
| echo "$(agg_configfs_dev_name _sysfs.0)" > "$SYSFS_AGG_DIR/delete_device" |
| test -d $CONFIGFS_AGG_DIR/_sysfs.0 && fail "_sysfs.0 unexpectedly remains" |
| test -d /dev/${CHIPNAME} && fail "/dev/${CHIPNAME} unexpectedly remains" |
| |
| echo "1.2.3. Asynchronous creation with deferred probe" |
| sim_disable_chip chip0 |
| echo 'chip0_bank0 0' > $SYSFS_AGG_DIR/new_device |
| sleep 1 |
| test "$(cat "$CONFIGFS_AGG_DIR/_sysfs.0/live")" = 0 || fail "chip unexpectedly alive" |
| sim_enable_chip chip0 |
| sleep 1 |
| CHIPNAME=$(agg_configfs_chip_name _sysfs.0) |
| test "$(cat "$CONFIGFS_AGG_DIR/_sysfs.0/live")" = 1 || fail "chip unexpectedly remains dead" |
| test "$(agg_get_chip_label _sysfs.0)" = "$(agg_configfs_dev_name _sysfs.0)" || \ |
| fail "label is inconsistent" |
| test "$(agg_get_chip_num_lines _sysfs.0)" = "1" || fail "number of lines is not 1" |
| test "$(agg_get_line_name _sysfs.0 0)" = "" || fail "line name unexpectedly set" |
| echo "$(agg_configfs_dev_name _sysfs.0)" > "$SYSFS_AGG_DIR/delete_device" |
| test -d $CONFIGFS_AGG_DIR/_sysfs.0 && fail "_sysfs.0 unexpectedly remains" |
| test -d /dev/${CHIPNAME} && fail "/dev/${CHIPNAME} unexpectedly remains" |
| |
| echo "1.2.4. Can't instantiate a chip with invalid configuration" |
| echo "xyz 0" > "$SYSFS_AGG_DIR/new_device" |
| test "$(cat $CONFIGFS_AGG_DIR/_sysfs.0/live)" = 0 || fail "chip unexpectedly alive" |
| echo "$(agg_configfs_dev_name _sysfs.0)" > "$SYSFS_AGG_DIR/delete_device" |
| |
| echo "2. GPIO aggregator configuration" |
| |
| echo "2.1. Configuring aggregators instantiated via configfs" |
| setup_2_1() { |
| agg_create_chip agg0 |
| agg_create_line agg0 line0 |
| agg_create_line agg0 line1 |
| agg_set_key agg0 line0 "$(sim_get_chip_label chip0 bank0)" |
| agg_set_key agg0 line1 "$(sim_get_chip_label chip1 bank0)" |
| agg_set_offset agg0 line0 1 |
| agg_set_offset agg0 line1 3 |
| agg_set_line_name agg0 line0 test0 |
| agg_set_line_name agg0 line1 test1 |
| agg_enable_chip agg0 |
| } |
| teardown_2_1() { |
| agg_configfs_cleanup |
| } |
| |
| echo "2.1.1. While offline" |
| |
| echo "2.1.1.1. Line can be added/removed" |
| setup_2_1 |
| agg_disable_chip agg0 |
| agg_create_line agg0 line2 |
| agg_set_key agg0 line2 "$(sim_get_chip_label chip0 bank1)" |
| agg_set_offset agg0 line2 5 |
| agg_enable_chip agg0 |
| test "$(agg_get_chip_num_lines agg0)" = "3" || fail "number of lines is not 1" |
| teardown_2_1 |
| |
| echo "2.1.1.2. Line key can be modified" |
| setup_2_1 |
| agg_disable_chip agg0 |
| agg_set_key agg0 line0 "$(sim_get_chip_label chip0 bank1)" |
| agg_set_key agg0 line1 "$(sim_get_chip_label chip1 bank1)" |
| agg_enable_chip agg0 |
| teardown_2_1 |
| |
| echo "2.1.1.3. Line name can be modified" |
| setup_2_1 |
| agg_disable_chip agg0 |
| agg_set_line_name agg0 line0 new0 |
| agg_set_line_name agg0 line1 new1 |
| agg_enable_chip agg0 |
| test "$(agg_get_line_name agg0 0)" = "new0" || fail "line name is unset" |
| test "$(agg_get_line_name agg0 1)" = "new1" || fail "line name is unset" |
| teardown_2_1 |
| |
| echo "2.1.1.4. Line offset can be modified" |
| setup_2_1 |
| agg_disable_chip agg0 |
| agg_set_offset agg0 line0 5 |
| agg_set_offset agg0 line1 7 |
| agg_enable_chip agg0 |
| teardown_2_1 |
| |
| echo "2.1.1.5. Can re-enable a chip after valid reconfiguration" |
| setup_2_1 |
| agg_disable_chip agg0 |
| agg_set_key agg0 line0 "$(sim_get_chip_label chip1 bank1)" |
| agg_set_offset agg0 line0 15 |
| agg_set_key agg0 line1 "$(sim_get_chip_label chip0 bank1)" |
| agg_set_offset agg0 line0 14 |
| agg_create_line agg0 line2 |
| agg_set_key agg0 line2 "$(sim_get_chip_label chip0 bank1)" |
| agg_set_offset agg0 line2 13 |
| agg_enable_chip agg0 |
| test "$(agg_get_chip_num_lines agg0)" = "3" || fail "number of lines is not 1" |
| teardown_2_1 |
| |
| echo "2.1.1.7. Can't re-enable a chip with invalid reconfiguration" |
| setup_2_1 |
| agg_disable_chip agg0 |
| agg_set_key agg0 line0 invalidkey |
| echo 1 > "$CONFIGFS_AGG_DIR/agg0/live" 2> /dev/null && fail "chip unexpectedly enabled" |
| teardown_2_1 |
| setup_2_1 |
| agg_disable_chip agg0 |
| agg_set_offset agg0 line0 99 |
| echo 1 > "$CONFIGFS_AGG_DIR/agg0/live" 2> /dev/null && fail "chip unexpectedly enabled" |
| teardown_2_1 |
| |
| echo "2.1.2. While online" |
| |
| echo "2.1.2.1. Can't add/remove line" |
| setup_2_1 |
| mkdir "$CONFIGFS_AGG_DIR/agg0/line2" 2> /dev/null && fail "line unexpectedly added" |
| rmdir "$CONFIGFS_AGG_DIR/agg0/line1" 2> /dev/null && fail "line unexpectedly removed" |
| teardown_2_1 |
| |
| echo "2.1.2.2. Can't modify line key" |
| setup_2_1 |
| echo "chip1_bank1" > "$CONFIGFS_AGG_DIR/agg0/line0/key" 2> /dev/null && \ |
| fail "lookup key unexpectedly updated" |
| teardown_2_1 |
| |
| echo "2.1.2.3. Can't modify line name" |
| setup_2_1 |
| echo "new0" > "$CONFIGFS_AGG_DIR/agg0/line0/name" 2> /dev/null && \ |
| fail "name unexpectedly updated" |
| teardown_2_1 |
| |
| echo "2.1.2.4. Can't modify line offset" |
| setup_2_1 |
| echo "5" > "$CONFIGFS_AGG_DIR/agg0/line0/offset" 2> /dev/null && \ |
| fail "offset unexpectedly updated" |
| teardown_2_1 |
| |
| echo "2.2. Configuring aggregators instantiated via sysfs" |
| setup_2_2() { |
| echo "chip0_bank0 1 chip1_bank0 3" > "$SYSFS_AGG_DIR/new_device" |
| } |
| teardown_2_2() { |
| echo "$(agg_configfs_dev_name _sysfs.0)" > "$SYSFS_AGG_DIR/delete_device" |
| } |
| |
| echo "2.2.1. While online" |
| |
| echo "2.2.1.1. Can toggle live" |
| setup_2_2 |
| agg_disable_chip _sysfs.0 |
| agg_enable_chip _sysfs.0 |
| teardown_2_2 |
| |
| echo "2.2.1.2. Can't add/remove line" |
| setup_2_2 |
| mkdir "$CONFIGFS_AGG_DIR/_sysfs.0/line2" 2> /dev/null && fail "line unexpectedly added" |
| rmdir "$CONFIGFS_AGG_DIR/_sysfs.0/line1" 2> /dev/null && fail "line unexpectedly removed" |
| teardown_2_2 |
| |
| echo "2.2.1.3. Can't modify line key" |
| setup_2_2 |
| echo "chip1_bank1" > "$CONFIGFS_AGG_DIR/_sysfs.0/line0/key" 2> /dev/null && \ |
| fail "lookup key unexpectedly updated" |
| teardown_2_2 |
| |
| echo "2.2.1.4. Can't modify line name" |
| setup_2_2 |
| echo "new0" > "$CONFIGFS_AGG_DIR/_sysfs.0/line0/name" 2> /dev/null && \ |
| fail "name unexpectedly updated" |
| teardown_2_2 |
| |
| echo "2.2.1.5. Can't modify line offset" |
| setup_2_2 |
| echo "5" > "$CONFIGFS_AGG_DIR/_sysfs.0/line0/offset" 2> /dev/null && \ |
| fail "offset unexpectedly updated" |
| teardown_2_2 |
| |
| echo "2.2.2. While waiting for deferred probe" |
| |
| echo "2.2.2.1. Can't add/remove line despite live = 0" |
| sim_disable_chip chip0 |
| setup_2_2 |
| mkdir "$CONFIGFS_AGG_DIR/_sysfs.0/line2" 2> /dev/null && fail "line unexpectedly added" |
| rmdir "$CONFIGFS_AGG_DIR/_sysfs.0/line1" 2> /dev/null && fail "line unexpectedly removed" |
| teardown_2_2 |
| sim_enable_chip chip0 |
| |
| echo "2.2.2.2. Can't modify line key" |
| sim_disable_chip chip0 |
| setup_2_2 |
| echo "chip1_bank1" > "$CONFIGFS_AGG_DIR/_sysfs.0/line0/key" 2> /dev/null && \ |
| fail "lookup key unexpectedly updated" |
| teardown_2_2 |
| sim_enable_chip chip0 |
| |
| echo "2.2.2.3. Can't modify line name" |
| sim_disable_chip chip0 |
| setup_2_2 |
| echo "new0" > "$CONFIGFS_AGG_DIR/_sysfs.0/line0/name" 2> /dev/null && \ |
| fail "name unexpectedly updated" |
| teardown_2_2 |
| sim_enable_chip chip0 |
| |
| echo "2.2.2.4. Can't modify line offset" |
| sim_disable_chip chip0 |
| setup_2_2 |
| echo 5 > "$CONFIGFS_AGG_DIR/_sysfs.0/line0/offset" 2> /dev/null && \ |
| fail "offset unexpectedly updated" |
| teardown_2_2 |
| sim_enable_chip chip0 |
| |
| echo "2.2.2.5. Can't toggle live" |
| sim_disable_chip chip0 |
| setup_2_2 |
| test "$(cat "$CONFIGFS_AGG_DIR/_sysfs.0/live")" = 0 || fail "chip unexpectedly alive" |
| echo 1 > "$CONFIGFS_AGG_DIR/_sysfs.0/live" 2> /dev/null && fail "chip unexpectedly enabled" |
| teardown_2_2 |
| sim_enable_chip chip0 |
| |
| echo "2.2.3. While offline" |
| |
| echo "2.2.3.1. Can't add/remove line despite live = 0" |
| setup_2_2 |
| agg_disable_chip _sysfs.0 |
| mkdir "$CONFIGFS_AGG_DIR/_sysfs.0/line2" 2> /dev/null && fail "line unexpectedly added" |
| rmdir "$CONFIGFS_AGG_DIR/_sysfs.0/line1" 2> /dev/null && fail "line unexpectedly removed" |
| teardown_2_2 |
| |
| echo "2.2.3.2. Line key can be modified" |
| setup_2_2 |
| agg_disable_chip _sysfs.0 |
| agg_set_key _sysfs.0 line0 "$(sim_get_chip_label chip0 bank1)" |
| agg_set_key _sysfs.0 line1 "$(sim_get_chip_label chip1 bank1)" |
| agg_enable_chip _sysfs.0 |
| teardown_2_2 |
| |
| echo "2.2.3.3. Line name can be modified" |
| setup_2_2 |
| agg_disable_chip _sysfs.0 |
| agg_set_line_name _sysfs.0 line0 new0 |
| agg_set_line_name _sysfs.0 line1 new1 |
| agg_enable_chip _sysfs.0 |
| test "$(agg_get_line_name _sysfs.0 0)" = "new0" || fail "line name is unset" |
| test "$(agg_get_line_name _sysfs.0 1)" = "new1" || fail "line name is unset" |
| teardown_2_2 |
| |
| echo "2.2.3.4. Line offset can be modified" |
| setup_2_2 |
| agg_disable_chip _sysfs.0 |
| agg_set_offset _sysfs.0 line0 5 |
| agg_set_offset _sysfs.0 line1 7 |
| agg_enable_chip _sysfs.0 |
| teardown_2_2 |
| |
| echo "2.2.3.5. Can re-enable a chip with valid reconfiguration" |
| setup_2_2 |
| agg_disable_chip _sysfs.0 |
| agg_set_key _sysfs.0 line0 "$(sim_get_chip_label chip1 bank1)" |
| agg_set_offset _sysfs.0 line0 15 |
| agg_set_key _sysfs.0 line1 "$(sim_get_chip_label chip0 bank1)" |
| agg_set_offset _sysfs.0 line0 14 |
| agg_enable_chip _sysfs.0 |
| teardown_2_2 |
| |
| echo "2.2.3.6. Can't re-enable a chip with invalid reconfiguration" |
| setup_2_2 |
| agg_disable_chip _sysfs.0 |
| agg_set_key _sysfs.0 line0 invalidkey |
| echo 1 > "$CONFIGFS_AGG_DIR/_sysfs.0/live" 2> /dev/null && fail "chip unexpectedly enabled" |
| teardown_2_2 |
| setup_2_2 |
| agg_disable_chip _sysfs.0 |
| agg_set_offset _sysfs.0 line0 99 |
| echo 1 > "$CONFIGFS_AGG_DIR/_sysfs.0/live" 2> /dev/null && fail "chip unexpectedly enabled" |
| teardown_2_2 |
| |
| echo "3. Module unload" |
| |
| echo "3.1. Can't unload module if there is at least one device created via configfs" |
| agg_create_chip agg0 |
| modprobe -r gpio-aggregator 2> /dev/null |
| test -d /sys/module/gpio_aggregator || fail "module unexpectedly unloaded" |
| agg_remove_chip agg0 |
| |
| echo "3.2. Can unload module if there is no device created via configfs" |
| echo "chip0_bank0 1 chip1_bank0 3" > "$SYSFS_AGG_DIR/new_device" |
| modprobe -r gpio-aggregator 2> /dev/null |
| test -d /sys/module/gpio_aggregator && fail "module unexpectedly remains to be loaded" |
| modprobe gpio-aggregator 2> /dev/null |
| |
| echo "4. GPIO forwarder functional" |
| SETTINGS="chip0:bank0:2 chip0:bank1:4 chip1:bank0:6 chip1:bank1:8" |
| setup_4() { |
| local OFFSET=0 |
| agg_create_chip agg0 |
| for SETTING in $SETTINGS; do |
| CHIP=$(echo "$SETTING" | cut -d: -f1) |
| BANK=$(echo "$SETTING" | cut -d: -f2) |
| LINE=$(echo "$SETTING" | cut -d: -f3) |
| agg_create_line agg0 "line${OFFSET}" |
| agg_set_key agg0 "line${OFFSET}" "$(sim_get_chip_label "$CHIP" "$BANK")" |
| agg_set_offset agg0 "line${OFFSET}" "$LINE" |
| OFFSET=$(expr $OFFSET + 1) |
| done |
| agg_enable_chip agg0 |
| } |
| teardown_4() { |
| agg_configfs_cleanup |
| } |
| |
| echo "4.1. Forwarding set values" |
| setup_4 |
| OFFSET=0 |
| for SETTING in $SETTINGS; do |
| CHIP=$(echo "$SETTING" | cut -d: -f1) |
| BANK=$(echo "$SETTING" | cut -d: -f2) |
| LINE=$(echo "$SETTING" | cut -d: -f3) |
| DEVNAME=$(cat "$CONFIGFS_SIM_DIR/$CHIP/dev_name") |
| CHIPNAME=$(cat "$CONFIGFS_SIM_DIR/$CHIP/$BANK/chip_name") |
| VAL_PATH="/sys/devices/platform/$DEVNAME/$CHIPNAME/sim_gpio${LINE}/value" |
| test $(cat $VAL_PATH) = "0" || fail "incorrect value read from sysfs" |
| $BASE_DIR/gpio-mockup-cdev -s 1 "/dev/$(agg_configfs_chip_name agg0)" "$OFFSET" & |
| mock_pid=$! |
| sleep 0.1 # FIXME Any better way? |
| test "$(cat $VAL_PATH)" = "1" || fail "incorrect value read from sysfs" |
| kill "$mock_pid" |
| OFFSET=$(expr $OFFSET + 1) |
| done |
| teardown_4 |
| |
| echo "4.2. Forwarding set config" |
| setup_4 |
| OFFSET=0 |
| for SETTING in $SETTINGS; do |
| CHIP=$(echo "$SETTING" | cut -d: -f1) |
| BANK=$(echo "$SETTING" | cut -d: -f2) |
| LINE=$(echo "$SETTING" | cut -d: -f3) |
| DEVNAME=$(cat "$CONFIGFS_SIM_DIR/$CHIP/dev_name") |
| CHIPNAME=$(cat "$CONFIGFS_SIM_DIR/$CHIP/$BANK/chip_name") |
| VAL_PATH="/sys/devices/platform/$DEVNAME/$CHIPNAME/sim_gpio${LINE}/value" |
| $BASE_DIR/gpio-mockup-cdev -b pull-up "/dev/$(agg_configfs_chip_name agg0)" "$OFFSET" |
| test $(cat "$VAL_PATH") = "1" || fail "incorrect value read from sysfs" |
| OFFSET=$(expr $OFFSET + 1) |
| done |
| teardown_4 |
| |
| echo "5. Race condition verification" |
| |
| echo "5.1. Stress test of new_device/delete_device and module load/unload" |
| for _ in $(seq 1000); do |
| { |
| echo "dummy 0" > "$SYSFS_AGG_DIR/new_device" |
| cat "$CONFIGFS_AGG_DIR/_sysfs.0/dev_name" > "$SYSFS_AGG_DIR/delete_device" |
| } 2> /dev/null |
| done & |
| writer_pid=$! |
| while kill -0 "$writer_pid" 2> /dev/null; do |
| { |
| modprobe gpio-aggregator |
| modprobe -r gpio-aggregator |
| } 2> /dev/null |
| done |
| |
| echo "GPIO $MODULE test PASS" |
