Add tests for dma using DSA

Make use of DSA and module dmatest to do DMA tests.
User have to build module dmatest as a module, and enable idxd device.

Signed-off-by: Yi Sun <[email protected]>

BM/dma/dma_test.sh

@@ -0,0 +1,91 @@
+#!/bin/bash
+
+############################# Global variables ################################
+DMA_SYSFS_DIR="/sys/class/dma"
+DMA_MODULE="dmatest"
+lasttime=$(dmesg | tail -1 | cut -d']' -f1 | sed 's/.*\[\|\s//g')
+
+############################# Functions #######################################
+
+usage()
+{
+  cat <<-EOF >&2
+    usage: ./${0##*/}  [-l TEST_LOOP] [-t TESTCASE_ID] [-p THREADS] [-i ITERATIONS] [-b BUFF_SIZE] [-c DMA_CH]
+    -l TEST_LOOP  test loop
+    -t TESTCASE_ID test case id, which case to be run
+    -p THREADS how many threads use dma
+    -i ITERATIONS transfer for how many times
+    -b BUFF_SIZE DMA buffer size
+    -c DMA_CH which channel to be test
+    -h Help   print this usage
+EOF
+  exit 0
+}
+
+init_device()
+{
+  echo dsa0 > /sys/bus/dsa/drivers/idxd/unbind || true
+  modprobe -r idxd || true
+  modprobe idxd
+  echo 0 > /sys/bus/dsa/devices/dsa0/wq0.0/group_id
+  echo dedicated > /sys/bus/dsa/devices/dsa0/wq0.0/mode
+  echo 10 > /sys/bus/dsa/devices/dsa0/wq0.0/priority
+  echo 16 > /sys/bus/dsa/devices/dsa0/wq0.0/size
+  echo "kernel" > /sys/bus/dsa/devices/dsa0/wq0.0/type
+  echo "dma2chan0" > /sys/bus/dsa/devices/dsa0/wq0.0/name
+  echo "dmaengine" > /sys/bus/dsa/devices/dsa0/wq0.0/driver_name
+  echo 0 > /sys/bus/dsa/devices/dsa0/engine0.0/group_id
+  echo dsa0 > /sys/bus/dsa/drivers/idxd/bind
+  echo wq0.0 > /sys/bus/dsa/drivers/dmaengine/bind
+}
+
+############################### CLI Params ###################################
+while getopts :l:t:p:i:b:c:h arg; do
+  case $arg in
+    l)  TEST_LOOP="$OPTARG";;
+    p)  THREAD="$OPTARG";;
+    i)  ITERATION="$OPTARG";;
+    b)  BUFF_SIZE="$OPTARG";;
+    c)  DMA_CH="$OPTARG";;
+    h)  usage;;
+    :)  echo "$0: Must supply an argument to -$OPTARG."
+        exit 1
+    ;;
+    \?) echo "Invalid Option -$OPTARG ignored."
+        usage
+        exit 1
+    ;;
+  esac
+done
+
+########################### DYNAMICALLY-DEFINED Params ########################
+: ${TEST_LOOP:='1'}
+: ${THREAD:='1'}
+: ${ITERATION:='10000'}
+: ${BUFF_SIZE:='4096'}
+
+init_device
+
+i=0
+while [ $i -lt $TEST_LOOP ]; do
+  modprobe -r dmatest || true
+  modprobe dmatest run=$THREAD iterations=$ITERATION wait=1 test_buf_size=$BUFF_SIZE channel="" timeout=2000 || {
+    echo "Failed to modprobe $DMA_MODULE"
+    exit 1
+  }
+
+  result=$(dmesg | sed "1,/$lasttime/d" | grep dmatest | grep -w "0 failures")
+
+  i=$((i+1))
+done
+
+modprobe -r dmatest
+echo dsa0 > /sys/bus/dsa/drivers/idxd/unbind
+
+[ -z "$result" ] && {
+  echo "DMA mem2mem copy failed, dmesg is:$(dmesg | sed "1,/$lasttime/d")"
+  exit 1
+}
+
+exit 0
+

BM/dma/tests

@@ -0,0 +1,9 @@
+# @name DMATEST
+# @desc DMATEST uses dmatest.ko module to runs tests on all available dma channels
+# @requires dmatest
+
+dma_test.sh -l 1 -p 1 -i 100 -b 32 -c ""
+dma_test.sh -l 1 -p 1 -i 100 -b 4096 -c ""
+dma_test.sh -l 10 -p 1 -i 1000 -b 32 -c ""
+dma_test.sh -l 10 -p 1 -i 1000 -b 4096 -c ""
+dma_test.sh -l 1 -p 1 -i 1000 -b 409600 -c ""