XDMA: add mm sanity test

XDMA/linux-kernel/readme.txt

@@ -80,6 +80,35 @@ Directory and file description:
 		If a AXI-ST design is independent of H2C and C2H, performance
 		number can be generated. 
 
+	- scripts_mm/
+		This directory contains a set of scripts to check basic driver
+		loading/unloading and perform dma operations in memory-mapped
+		mode.
+		Compare with dma_memory_mapped_test.sh, the test is more
+		extensive with more dma size and it also utilizes fio tool in
+		addition to dma_from/to_device tools.
+
+		- xdma_mm.sh
+			top level script.
+
+		- io_sweep.sh, io.sh, unaligned
+			dma test via dma_from/to_device
+
+		- fio_test.sh fio_parse_result.sh
+			dma test via fio tool
+
+	- scripts_mm/ dependency
+		Some test in script_mm/ requires fio tool and python extension
+
+		Install fio:
+		- Centos/RHEL: yum install fio
+		- Ubuntu: apt install fio
+
+		Install python extension openpyxl, xlrd(version 1.2.0)
+			python --version
+			pip2 install openpyxl
+			pip2 install xlrd=1.2.0
+
 Usage:
   - Change directory to the driver directory.
         cd xdma
@@ -96,6 +125,12 @@ Usage:
         	./load_driver.sh
   - Run the provided test script to generate basic DMA traffic.
         ./run_test.sh
+ 	
+	For more extensive memory mapped test:
+	assume the XDMA FGPA is at pci slot 0000:01:00.0
+		cd scripts_mm
+		./xdma_mm.sh 0000:01:00.0
+
   - Check driver Version number
         modinfo xdma (or)
         modinfo ../xdma/xdma.ko    

XDMA/linux-kernel/tests/dma_memory_mapped_test.sh

 #!/bin/bash
+display_help() {
+	echo "$0 <xdma id> <io size> <io count> <h2c #> <c2h #>"
+	echo -e "xdma id:\txdma[N] "
+	echo -e "io size:\tdma transfer size in byte"
+	echo -e "io count:\tdma transfer count"
+       	echo -e "h2c #:\tnumber of h2c channels"
+	echo -e "c2h #:\tnumber of c2h channels"
+       	echo
        
-transferSize=$1
-transferCount=$2
-h2cChannels=$3
-c2hChannels=$4
+	exit 1
+}
+
+if [ $# -eq 0 ]; then
+	display_help
+fi
+
+xid=$1
+transferSz=$2
+transferCount=$3
+h2cChannels=$4
+c2hChannels=$5
 
 tool_path=../tools
 
 testError=0
 # Run the PCIe DMA memory mapped write read test
 echo "Info: Running PCIe DMA memory mapped write read test"
-echo "      transfer size:  $transferSize"
-echo "      transfer count: $transferCount"
+echo -e "\ttransfer size:  $transferSz, count: $transferCount"
 
 # Write to all enabled h2cChannels in parallel
 if [ $h2cChannels -gt 0 ]; then
-  # Loop over four blocks of size $transferSize and write to them (in parallel where possible)
-  for ((i=0; i<=3; i++))
-  do
-    addrOffset=$(($transferSize * $i))
+	# Loop over four blocks of size $transferSz and write to them
+	for ((i=0; i<=3; i++)); do
+		addrOffset=$(($transferSz * $i))
 		curChannel=$(($i % $h2cChannels))
-    echo "Info: Writing to h2c channel $curChannel at address offset $addrOffset."
-    $tool_path/dma_to_device -d /dev/xdma0_h2c_${curChannel} -f data/datafile${i}_4K.bin -s $transferSize -a $addrOffset -c $transferCount &
-    # If all channels have active transactions we must wait for them to complete
+	       	echo "Info: Writing to h2c channel $curChannel at address" \
+		       "offset $addrOffset."
+		$tool_path/dma_to_device -d /dev/${xid}_h2c_${curChannel} \
+		       	-f data/datafile${i}_4K.bin -s $transferSz \
+			-a $addrOffset -c $transferCount &
+		# If all channels have active transactions we must wait for
+	        # them to complete
 		if [ $(($curChannel+1)) -eq $h2cChannels ]; then
 			echo "Info: Wait for current transactions to complete."
 			wait
@@ -35,17 +53,21 @@ wait
 
 # Read from all enabled c2hChannels in parallel
 if [ $c2hChannels -gt 0 ]; then
-  # Loop over four blocks of size $transferSize and read from them (in parallel where possible)
-  for ((i=0; i<=3; i++))
-  do
-    addrOffset=$(($transferSize * $i))
+	# Loop over four blocks of size $transferSz and read from them
+	for ((i=0; i<=3; i++)); do
+		addrOffset=$(($transferSz * $i))
 		curChannel=$(($i % $c2hChannels))
+
 		rm -f data/output_datafile${i}_4K.bin
-    echo "Info: Reading from c2h channel $curChannel at address offset $addrOffset."
-    $tool_path/dma_from_device -d /dev/xdma0_c2h_${curChannel} -f data/output_datafile${i}_4K.bin -s $transferSize -a $addrOffset -c $transferCount &
-    # If all channels have active transactions we must wait for them to complete
+		echo "Info: Reading from c2h channel $curChannel at " \
+			"address offset $addrOffset."
+		$tool_path/dma_from_device -d /dev/${xid}_c2h_${curChannel} \
+		       	-f data/output_datafile${i}_4K.bin -s $transferSz \
+		       	-a $addrOffset -c $transferCount &
+		# If all channels have active transactions we must wait for
+	        # them to complete
 		if [ $(($curChannel+1)) -eq $c2hChannels ]; then
-      echo "Info: Wait for the current transactions to complete."
+			echo "Info: Wait for current transactions to complete."
 			wait
 		fi
 	done
@@ -56,23 +78,28 @@ wait
 
 # Verify that the written data matches the read data if possible.
 if [ $h2cChannels -eq 0 ]; then
-  echo "Info: No data verification was performed because no h2c channels are enabled."
+	echo "Info: No data verification was performed because no h2c " \
+		"channels are enabled."
 elif [ $c2hChannels -eq 0 ]; then
-  echo "Info: No data verification was performed because no c2h channels are enabled."
+	echo "Info: No data verification was performed because no c2h " \
+		"channels are enabled."
 else
 	echo "Info: Checking data integrity."
-  for ((i=0; i<=3; i++))
-  do
-    cmp data/output_datafile${i}_4K.bin data/datafile${i}_4K.bin -n $transferSize
+	for ((i=0; i<=3; i++)); do
+		cmp data/output_datafile${i}_4K.bin data/datafile${i}_4K.bin \
+			-n $transferSz
 		returnVal=$?
 	       	if [ ! $returnVal == 0 ]; then
-      echo "Error: The data written did not match the data that was read."
-      echo "       address range:   $(($i*$transferSize)) - $((($i+1)*$transferSize))"
-      echo "       write data file: data/datafile${i}_4K.bin"
-      echo "       read data file:  data/output_datafile${i}_4K.bin"
+			echo "Error: The data written did not match the data" \
+			       " that was read."
+			echo -e "\taddress range: " \
+				"$(($i*$transferSz)) - $((($i+1)*$transferSz))"
+			echo -e "\twrite data file: data/datafile${i}_4K.bin"
+			echo -e "\tread data file:  data/output_datafile${i}_4K.bin"
 			testError=1
 		else
-      echo "Info: Data check passed for address range $(($i*$transferSize)) - $((($i+1)*$transferSize))."
+			echo "Info: Data check passed for address range " \
+				"$(($i*$transferSz)) - $((($i+1)*$transferSz))"
 		fi
 	done
 fi

XDMA/linux-kernel/tests/load_driver.sh

 #!/bin/bash
+# set -x
+
+display_help() {
+        echo "$0 [interrupt mode]"
+        echo "interrupt mode: optional"
+        echo "0: auto"
+        echo "1: MSI"
+        echo "2: Legacy"
+        echo "3: MSIx"
+        echo "4: do not use interrupt, poll mode only"
+        exit;
+}
+
+if [ "$1" == "help" ]; then
+        display_help
+fi;
+
+interrupt_selection=$1
+echo "interrupt_selection $interrupt_selection."
+device_id=903f
 
 # Make sure only root can run our script
 if [[ $EUID -ne 0 ]]; then
@@ -10,20 +30,55 @@ fi
 lsmod | grep xdma
 if [ $? -eq 0 ]; then
 	rmmod xdma
+	if [ $? -ne 0 ]; then
+		echo "rmmod xdma failed: $?"
+		exit 1
+	fi
 fi
-echo -n "Loading xdma driver..."
+
 # Use the following command to Load the driver in the default 
 # or interrupt drive mode. This will allow the driver to use 
 # interrupts to signal when DMA transfers are completed.
-insmod ../xdma/xdma.ko
-# Use the following command to Load the driver in Polling
-# mode rather than than interrupt mode. This will allow the
-# driver to use polling to determ when DMA transfers are 
-# completed.
-#insmod ../xdma/xdma.ko poll_mode=1
-
-if [ ! $? == 0 ]; then
-  echo "Error: Kernel module did not load properly."
+echo -n "Loading driver..."
+case $interrupt_selection in
+	"0")
+		echo "insmod xdma.ko interrupt_mode=1 ..."
+		ret=`insmod ../xdma/xdma.ko interrupt_mode=0`
+		;;
+	"1")
+		echo "insmod xdma.ko interrupt_mode=2 ..."
+		ret=`insmod ../xdma/xdma.ko interrupt_mode=1`
+		;;
+	"2")
+		echo "insmod xdma.ko interrupt_mode=3 ..."
+		ret=`insmod ../xdma/xdma.ko interrupt_mode=2`
+		;;
+	"3")
+		echo "insmod xdma.ko interrupt_mode=4 ..."
+		ret=`insmod ../xdma/xdma.ko interrupt_mode=3`
+		;;
+	"4")
+		echo "insmod xdma.ko poll_mode=1 ..."
+		ret=`insmod ../xdma/xdma.ko poll_mode=1`
+		;;
+	*)
+		intp=`sudo lspci -d :${device_id} -v | grep -o -E "MSI-X"`
+		intp1=`sudo lspci -d :${device_id} -v | grep -o -E "MSI:"`
+	       	if [[ ( -n $intp ) && ( $intp == "MSI-X" ) ]]; then
+			echo "insmod xdma.ko interrupt_mode=0 ..."
+			ret=`insmod ../xdma/xdma.ko interrupt_mode=0`
+	       	elif [[ ( -n $intp1 ) && ( $intp1 == "MSI:" ) ]]; then
+			echo "insmod xdma.ko interrupt_mode=1 ..."
+			ret=`insmod ../xdma/xdma.ko interrupt_mode=1`
+		else
+			echo "insmod xdma.ko interrupt_mode=2 ..."
+			ret=`insmod ../xdma/xdma.ko interrupt_mode=2`
+		fi
+		;;
+esac
+
+if [ ! $ret == 0 ]; then
+	echo "Error: xdma driver did not load properly"
 	echo " FAILED"
 	exit 1
 fi
@@ -42,4 +97,4 @@ else
 	exit 1
 fi
 
-echo " DONE"
+echo "DONE"

XDMA/linux-kernel/tests/run_test.sh

@@ -20,11 +20,18 @@ transferCount=1
 # Determine if the core is Memory Mapped or Streaming
 isStreaming=0
 h2cChannels=0
-for ((i=0; i<=3; i++))
-do
+for ((i=0; i<=3; i++)); do
+	v=`$tool_path/reg_rw /dev/xdma0_control 0x0${i}00 w`
+	returnVal=$?
+	if [ $returnVal -ne 0 ]; then
+		break;
+	fi
+
+	#v=`echo $v | grep -o  '): 0x[0-9a-f]*'`
 	statusRegVal=`$tool_path/reg_rw /dev/xdma0_control 0x0${i}00 w | grep "Read.*:" | sed 's/Read.*: 0x\([a-z0-9]*\)/\1/'`
 	channelId=${statusRegVal:0:3}
 	streamEnable=${statusRegVal:4:1}
+
 	if [ $channelId == "1fc" ]; then
 		h2cChannels=$((h2cChannels + 1))
 		if [ $streamEnable == "8" ]; then
@@ -33,20 +40,28 @@ do
 	fi
 done
 echo "Info: Number of enabled h2c channels = $h2cChannels"
+
 # Find enabled c2hChannels
 c2hChannels=0
-for ((i=0; i<=3; i++))
-do
-  $tool_path/reg_rw /dev/xdma0_control 0x1${i}00 w | grep "Read.*: 0x1fc" > /dev/null
+for ((i=0; i<=3; i++)); do
+	v=`$tool_path/reg_rw /dev/xdma0_control 0x1${i}00 w`
 	returnVal=$?
-  if [ $returnVal -eq 0 ]; then
-    c2hChannels=$((c2hChannels + 1))
-    if [ $streamEnable == "8" ]; then
-      isStreaming=1
+	if [ $returnVal -ne 0 ]; then
+		break;
 	fi
+
+	$tool_path/reg_rw /dev/xdma0_control 0x1${i}00 w | grep "Read.*: 0x1fc" > /dev/null
+	statusRegVal=`$tool_path/reg_rw /dev/xdma0_control 0x1${i}00 w | grep "Read.*:" | sed 's/Read.*: 0x\([a-z0-9]*\)/\1/'`
+	channelId=${statusRegVal:0:3}
+
+	# there will NOT be a mix of MM & ST channels, so no need to check
+	# for streaming enabled
+	if [ $channelId == "1fc" ]; then
+		c2hChannels=$((c2hChannels + 1))
 	fi
 done
 echo "Info: Number of enabled c2h channels = $c2hChannels"
+
 # Report if the PCIe DMA core is memory mapped or streaming
 if [ $isStreaming -eq 0 ]; then
 	echo "Info: The PCIe DMA core is memory mapped."
@@ -65,7 +80,7 @@ testError=0
 if [ $isStreaming -eq 0 ]; then
 
 	# Run the PCIe DMA memory mapped write read test
-  ./dma_memory_mapped_test.sh $transferSize $transferCount $h2cChannels $c2hChannels
+	./dma_memory_mapped_test.sh xdma0 $transferSize $transferCount $h2cChannels $c2hChannels
 	returnVal=$?
 	 if [ $returnVal -eq 1 ]; then
 		testError=1

XDMA/linux-kernel/tests/scripts_mm/fio_parse_result.sh

+#!/bin/bash
+
+##############################################################
+#
+# parse the fio result directory generated by the fio_test.sh
+#
+##############################################################
+function parse_iops() {
+	eval str="$1"
+
+	value=$(echo $str | awk -F  "," '{print $1}' | awk -F "=" '{print $2}')
+	unit=$(echo $value |  awk -F '[0-9,.]*' '{print $2}')
+	value=$(echo $value | sed 's/[^0-9,.]*//g')
+#	echo -n " iops: ${value}${unit}"
+
+	if [ -z "$unit" ];then
+		value=$(echo "scale=4; $value/1000" | bc -l)
+	elif [[ "$unit" == "k" ]];then
+		value=$(echo "scale=4; $value" | bc -l)
+	elif [[ "$unit" == "m" ]];then
+		value=$(echo "scale=4; $value*1000" | bc -l)
+	else
+		echo "iops: $value$unit, unknown unit $unit."
+	fi
+}
+
+function parse_bw() {
+	eval str="$1"
+
+	value=$(echo $str | awk -F  "," '{print $2}')
+	value=$(echo $value | awk -F "[(,)]" '{print $2}')
+	unit=$(echo $value |  awk -F '[0-9,.]*' '{print $2}')
+	value=$(echo $value | sed 's/[^0-9,.]*//g')
+#	echo -n " bw: ${value}${unit}"
+
+	if [[ "$unit" == "kB/s" ]];then
+		value=$(echo "scale=4; $value" | bc -l)
+	elif [[ "$unit" == "MB/s" ]];then
+		value=$(echo "scale=4; $value*1024" | bc -l)
+	elif [[ "$unit" == "gB/s" ]];then
+		value=$(echo "scale=4; $value*1024*1024" | bc -l)
+	else
+		echo "bw: $value$unit, unknown unit $unit."
+	fi
+}
+
+function parse_latency() {
+	eval str="$1"
+
+	value=$(echo $str | awk -F  "," '{print $3}' | awk -F "=" '{print $2}')
+	unit=$(echo $str |  awk -F "[(,)]" '{print $2}')
+#	echo -n " latency: ${value}${unit}"
+
+	if [[ "$unit" == "usec" ]];then
+		value=$(echo "scale=4; $value" | bc -l)
+	elif [[ "$unit" == "sec" ]];then
+		value=$(echo "scale=6; $value*1000000" | bc -l)
+	elif [[ "$unit" == "msec" ]];then
+		value=$(echo "scale=6; $value*1000" | bc -l)
+	elif [[ "$unit" == "nsec" ]];then
+		value=$(echo "scale=4; $value/1000" | bc -l)
+	else
+		echo "latency: $value$unit, unknown unit $unit."
+        fi
+}
+
+##############
+# Main body
+##############
+
+if [ $# -lt 1 ];then
+	echo "$0 <result directory>"
+	exit 1
+fi
+dir=$1
+
+if  [[ ! -d $dir ]];then
+	echo "$dir does NOT exist."
+	exit 1
+fi
+
+declare -a lat_array
+resfname=result.csv
+
+rm -f $dir/$resfname
+channel_list=`ls $dir`
+for channels in $channel_list; do
+	cd $dir/$channels
+	rm -f $dir/$channels/$resfname
+
+	iodir_list=`ls`
+	for iodir in $iodir_list; do
+		cd $dir/$channels/$iodir
+
+		rm -f $resfname
+		echo > $resfname
+
+		fio_list=`ls fio*.log`
+		for fname in $fio_list; do
+			# fio result file format fio_<io size>_t<# threads>.log
+			sz=$(echo $fname | cut -d. -f1 | cut -d_ -f2)
+			thread=$(echo $fname | cut -d. -f1 | cut -d_ -f3)
+			thread=$(echo $thread | sed 's/[^0-9]*//')
+
+			#echo "$dir/$channels/$iodir/$fname:"
+
+			value=0;
+			unit=0
+			if [ "$iodir" == "h2c" ]; then
+				#echo -n "$channels h2c:io $sz thread $thread "
+
+				ln=$(grep "write:" $fname)
+				parse_iops "\${ln}"
+				echo -n $sz,$thread,$value, >> $resfname
+				parse_bw "\${ln}"
+				echo -n $value, >> $resfname
+				ln=$(grep clat $fname | grep avg)
+				parse_latency "\${ln}"
+				echo "$value,,,," >> $resfname
+
+			elif [ "$iodir" == "c2h" ]; then
+				#echo -n "$channels c2h:io $sz thread $thread "
+
+				ln=$(grep "read:" $fname)
+				parse_iops "\${ln}"
+				echo -n $sz,$thread,,,,$value, >> $resfname
+				parse_bw "\${ln}"
+				echo -n $value, >> $resfname
+				ln=$(grep clat $fname | grep avg)
+				parse_latency "\${ln}"
+				echo "$value," >> $resfname
+
+			elif [ "$iodir" == "bi" ]; then
+				#echo -n "$channels bidir:io $sz thread $thread "
+
+				readarray lat_array < <(grep clat $fname | \
+							grep avg)
+
+				# h2c
+				#echo -n "h2c "
+
+				ln=$(grep "write:" $fname)
+				parse_iops "\${ln}"
+				echo -n $sz,$thread,$value, >> $resfname
+				parse_bw "\${ln}"
+				echo -n $value, >> $resfname
+				parse_latency "\${lat_array[1]}"
+				echo -n $value, >> $resfname
+
+				#c2h
+				#echo -n " c2h "
+
+				ln=$(grep "read:" $fname)
+				parse_iops "\${ln}"
+				echo -n $value, >> $resfname
+				parse_bw "\${ln}"
+				echo -n $value, >> $resfname
+				parse_latency "\${lat_array[0]}"
+				echo $value >> $resfname
+
+			fi
+		done
+	done
+done
+
+echo
+cd $dir
+for channels in $channel_list; do
+	cd $dir/$channels
+
+	echo -n "iosize(B)","Thread #", > $resfname
+	echo -n "H2C IOPS(K)","H2C BW(KB/s)","H2C Latency(usec)," >> $resfname
+	echo "C2H IOPS(K)","C2H BW(KB/s)","C2H Latency(usec)," >> $resfname
+
+	for iodir in $iodir_list; do
+		cat $iodir/$resfname | sort -t, -k1,1n >> $resfname
+	done
+
+	echo "$channels channel results: $dir/$channels/$resfname"
+done

XDMA/linux-kernel/tests/scripts_mm/fio_test.sh

+#!/bin/bash
+
+display_help() {
+	echo -n "$0 <xdma id> <# ch> <io sz> < runtime> <iodir> <thread #> "
+	echo "<logdir>"
+	echo -e "\t<xdma id>: xdmaN"
+	echo -e "\t<dir>: io direction <h2c|c2h|bi>"
+	echo -e "\t<# ch>: fio --num_ch"
+       	echo -e "\t<io sz>: fio --io_size"
+	echo -e "\t<runtime>: fio --runtime"
+	echo -e "\t<thread #>: fio --threads"
+       	echo -e "\t<logdir>: log directory"
+        exit;
+}
+
+####################
+#
+# main body
+#
+####################
+
+if [ $# -ne 7 ]; then
+	display_help
+fi
+
+xid=$1
+iodir=$2
+num_ch=$3
+io_size=$4
+runtime=$5
+threads=$6
+logdir=$7
+
+outfile="${logdir}/fio_${io_size}_t${threads}.log"
+
+exec_cmd=
+op_cmd=
+engine=sync
+cmd_common="fio --allow_file_create=0 --ioengine=${engine} --zero_buffers"
+cmd_common="$cmd_common --mem=mmap  --runtime=${runtime} --time_based"
+for ((i = 0; i < num_ch; i++)); do
+	if [ ${iodir} == bi ]; then
+		op_cmd="${op_cmd} --name=write${i} --bs=${io_size}"
+		op_cmd="${op_cmd} --size=${io_size} --offset=0 --rw=write"
+		op_cmd="${op_cmd} --filename=/dev/xdma0_h2c_${i}"
+		op_cmd="${op_cmd} --numjobs=${threads} --group_reporting"
+		op_cmd="${op_cmd} --name=read${i} --bs=${io_size}"
+		op_cmd="${op_cmd} --size=${io_size} --offset=0 --rw=read "
+		op_cmd="${op_cmd} --filename=/dev/xdma0_c2h_${i}"
+		op_cmd="${op_cmd} --numjobs=${threads} --group_reporting"
+	elif [ ${iodir} == h2c ]; then
+		op_cmd="${op_cmd} --name=write${i} --bs=${io_size}"
+		op_cmd="${op_cmd} --size=${io_size} --offset=0 --rw=write"
+		op_cmd="${op_cmd} --filename=/dev/xdma0_${iodir}_${i}"
+		op_cmd="${op_cmd} --numjobs=${threads} --group_reporting"
+	else
+		op_cmd="${op_cmd} --name=read${i} --bs=${io_size}"
+		op_cmd="${op_cmd} --size=${io_size} --offset=0 --rw=read"
+		op_cmd="${op_cmd} --filename=/dev/xdma0_${iodir}_${i}"
+		op_cmd="${op_cmd} --numjobs=${threads} --group_reporting"
+	fi 
+done
+
+
+exec_cmd="${cmd_common}${op_cmd}"
+echo -e "${exec_cmd}\n\n" > ${outfile}
+
+${exec_cmd} >> ${outfile} &
+pid=$!
+wait $pid

XDMA/linux-kernel/tests/scripts_mm/io.sh

+#!/bin/sh
+
+tool_path=../tools
+logdir=/tmp
+
+if [ $# -lt 9 ]; then
+	echo -ne "$0 <dmesg log 0|1> <data check 0|1> <sz> <address> <offset> "
+	echo "<xid> <h2c channel> <c2h channel> <log dir> [data file]"
+	echo -e "\t<dmesg log>: log test into dmesg"
+	echo -e "\t<data check 0|1>: read data back and compare"
+	echo -e "\t<sz>: dma transfer size"
+	echo -e "\t<address>: "
+	echo -e "\t<offset>: "
+	echo -e "\t<xdma id>: xdma<N>"
+	echo -e "\t<h2c channel>: dma h2c channel #, 0-based"
+	echo -e "\t\tif >= 4, no traffic will be ran"
+	echo -e "\t<c2h channel>: dma c2h channel #, 0-based"
+	echo -e "\t               if channel # >= 4 NO dma will be performed"
+	echo -e "\t\tif >= 4, no traffic will be ran"
+	echo -e "\t<log dir>: temp. log directory"
+	echo -e "\t[data file]: data file, size >= io size, "
+	echo -e "\t             optional if <data check>=0"
+	exit
+fi
+
+dmesg=$1
+data_check=$2
+sz=$3
+address=$4
+offset=$5
+xid=$6
+h2cno=$7
+c2hno=$8
+logdir=$9
+if [ $# -gt 9 ]; then
+	datafile=${10}
+fi
+
+if [ ! -d "$logdir" ]; then
+	mkdir -p $logdir
+fi
+
+echo -en "\n===>$0 $xid, channel $h2cno:$c2hno, io $sz, addr $address, "
+echo "off $offset, data: $datafile, integrity $data_check, dmesg $dmesg."
+
+if [ "$h2cno" -ge 4 ] && [ "$c2hno" -ge 4 ]; then
+	echo "$0: NO valid dma channel $h2cno:$c2hno"
+	exit 1
+fi
+
+h2c_cmd="$tool_path/dma_to_device -d /dev/${xid}_h2c_${h2cno}"
+c2h_cmd="$tool_path/dma_from_device -d /dev/${xid}_c2h_${c2hno}"
+if [ "$address" -ne "0" ]; then
+	h2c_cmd="$h2c_cmd -a $address"
+	c2h_cmd="$c2h_cmd -a $address"
+fi
+
+if [ "$offset" -ne "0" ]; then
+	h2c_cmd="$h2c_cmd -o $offset"
+	c2h_cmd="$c2h_cmd -o $offset"
+fi
+
+if [ "$data_check" -ne 0 ]; then
+	if [ -z "$datafile" ]; then
+		echo "no datafile specified"
+		exit 2
+	fi
+	if [ ! -s "$datafile" ]; then
+		echo "missing datafile: $datafile ..."
+		exit 3
+	fi
+
+	h2c_fname="$logdir/$xid-h2c${h2cno}-io$sz-o$offset-a$address.bin" 
+	rm -f $h2c_fname
+	h2c_cmd="$h2c_cmd -f $datafile -w $h2c_fname"
+
+	c2h_fname="$logdir/$xid-c2h${c2hno}-io$sz-o$offset-a$address.bin"
+	rm -f $c2h_fname
+	c2h_cmd="$c2h_cmd -f $c2h_fname"
+fi
+
+if [ "$h2cno" -lt 4 ]; then
+	if [ "$dmesg" -ne "0" ]; then
+		echo "$h2c_cmd -s $sz -c 1" > /dev/kmsg
+	fi
+
+	echo "$h2c_cmd -s $sz -c 1 ..." > \
+			${logdir}/h2c-io${sz}-o${offset}-a${address}.log
+	out=`$h2c_cmd -s $sz -c 1`
+
+	echo $out >> ${logdir}/h2c-io${sz}-o${offset}-a${address}.log
+	if [ "$?" -ne "0" ]; then
+		echo -e "\tH2C${h2cno}: io $sz, ERROR $?."
+		exit 4
+	fi
+fi	
+
+if [ "$c2hno" -lt 4 ]; then
+	if [ "$dmesg" -ne "0" ]; then
+		echo "$c2h_cmd -s $sz -c 1 ..." > /dev/kmsg
+	fi
+
+	echo "$c2h_cmd -s $sz -c 1 ..." > \
+       		${logdir}/c2h-io${sz}-o${offset}-a${address}.log
+	out=`./$c2h_cmd -s $sz -c 1`
+
+	echo $out >> ${logdir}/c2h-io${sz}-o${offset}-a${address}.log
+	if [ "$?" -ne "0" ]; then
+		echo -e "\tC2H$channel: io $sz, ERROR $?."
+		exit 5
+	fi
+fi	
+
+if [ "$data_check" -eq 0 ]; then
+	# no data integrity check needs to be done
+	exit 0
+fi
+
+#md5sum $c2h_fname
+#md5sum $h2c_fname
+diff -q $c2h_fname $h2c_fname > /dev/null
+if [ "$?" -eq "1" ]; then
+	echo -e "\t$xid $h2cno:$c2hno: io $sz, addr $address, off $offset," \
+		"data integrity FAILED!."
+	exit 6
+fi
+echo -e "\t$xid $h2cno:$c2hno: io $sz, addr $address, off $offset, data match."
+rm -f $c2h_fname $h2c_fname
+
+exit 0

XDMA/linux-kernel/tests/scripts_mm/io_sweep.sh

+#!/bin/sh
+
+delay=5
+
+if [ $# -lt 9 ]; then
+	echo -ne "$0: <xid> <h2c channel> <c2h channel> <address> <offset> "
+	echo "<io min> <io max> <data check> <dmesg log> [log dir]"
+	echo -e "\t<xdma id>: xdma<N>"
+	echo -e "\th2c channel: H2C channel #, 0-based"
+	echo -e "\tc2h channel: C2H channel #, 0-based"
+	echo -e "\t<address>: "
+	echo -e "\t<offset>: "
+	echo -e "\t<io min>,<io max>: dma size in byte, io size start from"
+	echo -e "\t\tio_min, double each time until reaches io_max"
+	echo -e "\t<data check>: read back the data and compare, 0|1"
+	echo -e "\t<dmesg log>: log test info. into dmesg, 0|1"
+	exit 1
+fi
+
+xid=$1
+h2cno=$2
+c2hno=$3
+addr=$4
+off=$5
+io_min=$6
+io_max=$7
+data_check=$8
+dmesg=$9
+
+tmpdir="/tmp/${xid}_h2c${h2cno}c2h${c2hno}"
+
+echo "====>$0 $xid $h2cno:$c2hno, $io_min~$io_max @$addr $off, $data_check, $tmpdir" 
+if [ "$dmesg" -ne 0 ]; then
+	echo "$0 $xid $h2cno:$c2hno, $io_min~$io_max @$addr $off, $tmpdir..." \
+		>> /dev/kmsg
+fi
+
+if [ ! -d "$tmpdir" ]; then
+	mkdir -p $tmpdir
+fi
+
+if [ "$data_check" -ne 0 ]; then
+	cnt=$(($io_max / 1024))
+	if [ "$cnt" -eq 0 ]; then
+		cnt=1
+	fi
+	datafile="$tmpdir/datafile-$cnt-K"
+	cnt=$(($cnt / 65536))
+	if [ "$cnt" -eq "0" ]; then
+	       	cnt=1
+	fi
+	if [ ! -f "$datafile" ]; then
+		echo "creating datafile: $datafile ..."
+		let cnt=cnt+1
+		dd if=/dev/urandom of=$datafile bs=64M count=$cnt \
+			iflag=fullblock
+	fi
+fi
+
+date
+
+sz=$io_min
+while [ "$sz" -le "$io_max" ]; do
+	./io.sh $dmesg $data_check $sz $addr $off $xid $h2cno $c2hno $tmpdir \
+	       	$datafile
+	if [ "$?" -ne "0" ]; then
+		#echo -e "\t$xid $h2cno:$c2hno, $sz FAILED" 
+		exit 2
+	fi
+
+	if [ "$sz" -eq "$io_max" ]; then
+		break
+	fi
+
+	sz=$(($sz * 2))
+	if [ "$sz" -gt "$io_max" ]; then
+		sz=$io_max
+	fi
+
+	if [ "$delay" -ne "0" ]; then
+		sleep $delay
+	fi
+done
+
+echo "====>$0 $xid $h2cno:$c2hno, $io_min~$io_max @$addr $off COMPLETED!" 
+exit 0

XDMA/linux-kernel/tests/scripts_mm/libtest.sh

+tool_path=../tools
+ERR=255
+CHANNEL_NOOP=4
+
+############################
+#
+# utility functions
+#
+############################
+
+# Make sure only root can run the script
+function check_if_root() {
+	if [[ $EUID -ne 0 ]]; then
+		echo "This script must be run as root" 1>&2
+		exit $ERR
+	fi
+}
+
+function check_cmd_exist() {
+	which $1 > /dev/null 2>&1
+	if [[ $? -ne 0 ]]; then
+		echo "$1 NOT found on the system"
+		return $ERR
+	fi
+	return 0
+}
+
+# check_rc <error code> <string> <exit if error 0|1>
+function check_rc() {
+        local rc=$1
+
+        if [ $rc -ne 0 ]; then
+                echo "ERR! $2 failed $rc."
+		if [ $3 -gt 0 ]; then
+			exit $rc
+		fi
+        fi
+}
+
+# check_dma_dir <h2c|c2h|bi>
+function check_dma_dir() {
+	if [ "$1" != h2c ] && [ "$1" != c2h ] && [ "$1" != bi ]; then
+		echo "bad dma direction: $1."
+		exit $ERR
+	fi
+}
+
+# check_driver_loaded <bdf>
+function check_driver_loaded() {
+	local bdf=$1
+	lspci -s $bdf -v | grep driver | grep xdma | wc -l
+}
+
+# bdf_to_xdmaid <bdf>
+function bdf_to_xdmaid() {
+	cd /sys/bus/pci/devices/$1/
+	if [ -d "xdma" ]; then
+		cd xdma/
+		ls | grep control | cut -d'_' -f1
+	fi
+}
+
+# cfg_reg_read <xid> <reg addr>
+function cfg_reg_read() {
+	local v=`$tool_path/reg_rw /dev/$1_control $2 w | grep "Read.*:" | sed 's/Read.*: 0x\([a-z0-9]*\)/\1/'`
+	if [ -z "$v" ]; then
+		return $ERR
+	else
+		echo $v
+		return 0
+	fi
+}
+
+# cfg_reg_write <xid> <reg addr> <reg value>
+function cfg_reg_write() {
+	local v=`$tool_path/reg_rw /dev/$1_control $2 w $3`
+	return $? 
+}
+
+# get_streaming_enabled <xid>
+function get_streaming_enabled() {
+	local v=`cfg_reg_read $1 0`
+	local rc=$?
+	if [ $rc -ne 0 ]; then
+		return $rc
+	fi
+
+	local id=${v:0:3}
+	local stream=${v:4:1}
+
+	local st=0
+	if [ "$id" == "1fc" ]; then
+		if [ "$stream" == "8" ]; then
+			st=1
+		fi
+	else
+		echo "$1 reg 0, $v, bad id $id, $stream."
+		return $ERR
+	fi
+	echo $st
+	return 0
+}
+
+# get_h2c_channel_count <xid>
+function get_h2c_channel_count() {
+	local cnt=0
+
+	for ((i=0; i<=3; i++)); do
+		local regval=`cfg_reg_read $1 0x0${i}00`
+		if [ $? -ne 0 ]; then
+			break
+		fi
+
+		local id=${regval:0:3}
+		if [ "$id" == "1fc" ]; then
+			cnt=$((cnt + 1))
+		fi
+	done
+	echo $cnt
+	return 0
+}
+
+# get_c2h_channel_count <xid>
+function get_c2h_channel_count() {
+	local cnt=0
+
+	for ((i=0; i<=3; i++)); do
+		local regval=`cfg_reg_read $1 0x1${i}00`
+		if [ $? -ne 0 ]; then
+			break
+		fi
+
+		local id=${regval:0:3}
+		if [ "$id" == "1fc" ]; then
+			cnt=$((cnt + 1))
+		fi
+	done
+	echo $cnt
+	return 0
+}
+
+#############################################################################
+#
+# test cases
+#
+#############################################################################
+
+# xdma config bar access
+# TC_cfg_reg_rw <xid>
+function TC_cfg_reg_rw() {
+	local reg=0x301c
+	local val=0
+
+	cfg_reg_write $reg $val
+	local v=$(cfg_reg_read $reg)
+	let "v = $v + 0"
+
+	if [ $v -eq $val ]; then
+ 		echo "ERR ${FUNCNAME[0]} reg value mismatch $v, exp $val"
+		exit $ERR
+	fi
+
+	cfg_reg_write $reg 1
+}
+
+# TC_dma_chrdev_open_close <xid> <h2c count> <c2h count>
+function TC_dma_chrdev_open_close() {
+	local xid=$1
+	local h2c_count=$2
+	local c2h_count=$3
+	local err=0
+
+	for ((i=0; i<$h2c_count; i++)); do
+		$tool_path/test_chrdev /dev/${xid}_h2c_$i > /dev/null 2>&1
+		if [ $? -ne 0 ];then
+ 			echo "${FUNCNAME[0]} ${xid}_h2c_$i FAILED"
+			exit 1
+             	fi
+	done
+
+	for ((i=0; i<$c2h_count; i++)); do
+		$tool_path/test_chrdev /dev/${xid}_c2h_$i > /dev/null 2>&1
+		if [ $? -ne 0 ];then
+ 			echo "${FUNCNAME[0]} ${xid}_c2h_$i FAILED"
+			exit 2
+             	fi
+	done
+}

XDMA/linux-kernel/tests/scripts_mm/unaligned.sh

+#!/bin/sh
+
+##########################
+#
+# preset test parameters:
+#
+##########################
+# dma io size
+io_list="1 10 127 128 1021 1022 1023 1024 4095 4096 4097 4098 4099 8189 8190 8191 8192"
+io_max=8192
+
+# offset
+offset_list="1 2 3 4 20?45 2046 2047 2048 2049 4091 4092 4093 4094 4095"
+
+# starting address
+address=0
+
+# delay(sleep) before moving on to the next channel, if applicable
+delay=2
+
+##########################
+#
+# main
+#
+##########################
+if [ $# -lt 5 ]; then
+	echo "$0: <xid> <h2c channel> <c2h channel> <data check> <dmesg log>"
+	echo -e "\t<xid>: xdma<N>"
+	echo -e "\t<h2c channel>: H2C channel #, 0-based"
+	echo -e "\t<c2h channel>: C2H channel #, 0-based"
+	echo -e "\t<data check>: read back the data and compare, 0|1"
+        echo -e "\t<dmesg log>: log test info. into dmesg, 0|1"
+	exit
+fi
+
+xid=$1
+h2cno=$2
+c2hno=$3
+data_check=$4
+dmesg=$5
+
+tmpdir="/tmp/${xid}_h2c${h2cno}_c2h${c2hno}_unaligned"
+
+echo "====>$0 $xid $h2cno:$c2hno, $data_check,$dmesg, $tmpdir"
+if [ "$dmesg" -ne 0 ]; then
+	echo "$0 $xid $h2cno:$c2hno, $tmpdir..." >> /dev/kmsg
+fi
+
+if [ ! -d "$tmpdir" ]; then
+	mkdir -p $tmpdir
+fi
+
+# generate data file, minimum 64MB
+cnt=$(($io_max / 1024))
+if [ "$cnt" -eq "0" ]; then
+	cnt=1
+fi
+datafile="$tmpdir/datafile-$cnt-K"
+cnt=$(($cnt / 65536))
+if [ "$cnt" -eq "0" ]; then
+	cnt=1
+fi
+if [ ! -f "$datafile" ]; then
+	echo "creating datafile: $datafile ..."
+	let cnt=cnt+1
+	dd if=/dev/urandom of=$datafile bs=64M count=$cnt iflag=fullblock
+fi
+
+echo
+date
+
+echo "====>$0: $xid $h2cno:$c2hno, addr $address ..." > /dev/kmsg
+echo "$0: $xid $h2cno:$c2hno, addr $address ..." > /dev/kmsg
+
+for io in $io_list; do
+	for offset in $offset_list; do
+		./io.sh $dmesg $data_check $io $address $offset $xid \
+			$h2cno $c2hno $tmpdir $datafile
+		if [ "$?" -ne "0" ]; then
+			echo -e "\t$xid $h2cno:$c2hno, $io, off $offset FAILED!"
+			exit 2
+		fi
+	done
+
+	if [ "$delay" -ne "0" ]; then
+		sleep $delay
+	fi
+done
+
+date
+echo "====>$0: $xid $h2cno:$c2hno, addr $address COMPLETED!"
+exit 0

XDMA/linux-kernel/tests/scripts_mm/xdma_mm.sh

+#!/bin/bash
+
+####################
+#
+# test settings
+#
+####################
+outdir="/tmp"
+driver_modes="0 4"		;# driver mode
+address=0
+offset=0
+io_min=64
+io_max=$((1 << 30))		;# 1GB
+delay=5				;# delay between each test
+
+fio_time=30
+fio_thread_list="4 8"
+fio_iodir_list="h2c c2h bi"
+
+####################
+#
+# main body
+#
+####################
+
+display_help() {
+	echo "$0 <xdma BDF> [log dir]"
+	echo -e "xdma BDF:\tfpga pci device specified in the format of "
+	echo -e "\t\t\t<domain>:<bus>:<device>.<func>"
+	echo -e "log dir:\toptional, default to /tmp"
+	echo
+	exit;
+}
+
+if [ $# -eq 0 ]; then
+	display_help
+fi
+
+bdf=$1
+if [ $# -gt 1 ]; then
+	outdir=$2
+fi
+
+echo "xdma bdf:$bdf, outdir: $outdir"
+
+source ./libtest.sh
+
+check_if_root
+
+curdir=$PWD
+
+for dm in $driver_modes; do
+
+	echo -e "\n\n====> xdma mode $dm ...\n"
+
+	cd ../tests
+
+	./load_driver.sh $dm
+	if [ $? -ne 0 ]; then
+                echo "load_driver.sh failed: $?"
+                exit 1
+        fi
+
+	cd $curdir
+	xid=$(bdf_to_xdmaid $bdf)
+	if [ ! -n "$xid" ]; then
+        	echo "$bdf, no correponding xdma found, driver mode $dm."
+        	exit 1
+	fi
+	echo "xdma id: $xid."
+
+	h2c_channels=$(get_h2c_channel_count $xid)
+	check_rc $? get_h2c_channel_count 1
+
+	c2h_channels=$(get_c2h_channel_count $xid)
+	check_rc $? get_c2h_channel_count 1
+
+	channel_pairs=$(($h2c_channels < $c2h_channels ? \
+			$h2c_channels : $c2h_channels))
+	echo "channels: $h2c_channels,$c2h_channels, pair $channel_pairs"
+
+	if [ "$channel_pairs" -eq 0 ]; then
+		echo "Error: 0 DMA channel pair: $h2c_channels,$c2h_channels."
+		exit 1
+	fi
+
+	# test cdev
+	TC_dma_chrdev_open_close $xid $h2c_channels $c2h_channels
+
+	#
+	# run 1 channel at a time
+	#
+
+	for i in {1..80}; do echo -n =; done
+	echo -e "\nSingle H2C Channel $h2c_channels io test ...\n"
+	for ((i=0; i<$h2c_channels; i++)); do
+		# aligned: no data integrity check
+		./io_sweep.sh $xid $i 4 $address $offset \
+			$io_min $io_max 0 1
+		check_rc $? "h2c-$i" 1
+		./unaligned.sh $xid $i 4 0 1 
+		check_rc $? "h2c-$i-unaligned" 1
+	done
+
+	for i in {1..80}; do echo -n =; done
+	echo -e "\nSingle C2H Channel $c2h_channels io test ...\n"
+	for ((i=0; i<$c2h_channels; i++)); do
+		./io_sweep.sh $xid 4 $i $address $offset \
+			$io_min $io_max 0 1
+		check_rc $? "c2h-$i" 1
+		./unaligned.sh $xid 4 $i 0 1 
+		check_rc $? "c2h-$i-unaligned" 1
+	done
+
+	for i in {1..80}; do echo -n =; done
+	echo -e "\nh2c/c2h pair $channel_pairs io test with data check ...\n"
+	for ((i=0; i<$channel_pairs; i++)); do
+		./io_sweep.sh $xid $i $i $address $offset $io_min $io_max 1 1
+		check_rc $? "pair-$i" 1
+		./unaligned.sh $xid $i $i 1 1 
+		check_rc $? "pair-$i-unaligned" 1
+	done
+
+	#
+	# fio test
+	#
+
+	check_cmd_exist fio
+	if [ "$?" -ne 0 ]; then
+		echo "fio test skipped"
+		continue
+	fi
+
+	for i in {1..80}; do echo -n =; done
+	echo -e "\nfio test  ...\n"
+	
+	#
+	# result directory structure:
+	# - <outdir/fio>
+	#       - <number of channels>
+	#               - <direction: h2c c2h bi>
+	#
+	for ((i=1; i<=$channel_pairs; i++)); do
+		for iodir in $fio_iodir_list; do
+			out=${outdir}/fio/${i}/${iodir}
+			mkdir -p ${out}
+			rm -rf ${out}/*
+
+			for (( sz=$io_min; sz<=$io_max; sz=$(($sz*2)) )); do
+				for thread in $fio_thread_list; do
+                                	name=${sz}_t${thread}
+                                	echo "$iodir $i: $name ..."
+					./fio_test.sh $xid $iodir $i ${sz} \
+						${fio_time} ${thread} ${out}
+				done
+			done
+	       	done
+       	done
+	./fio_parse_result.sh ${outdir}/fio
+
+	echo -e "\n\n====> xdma mode $dm COMPLETED.\n"
+done
+
+echo "$0: COMPLETED."

XDMA/linux-kernel/tools/Makefile

 CC ?= gcc
 
-all: reg_rw dma_to_device dma_from_device performance
+all: reg_rw dma_to_device dma_from_device performance test_chrdev
 
 dma_to_device: dma_to_device.o
 	$(CC) -lrt -o $@ $< -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -D_LARGE_FILE_SOURCE
@@ -14,9 +14,11 @@ performance: performance.o
 reg_rw: reg_rw.o
 	$(CC) -o $@ $<
 
+test_chrdev: test_chrdev.o
+	$(CC) -o $@ $<
+
 %.o: %.c
 	$(CC) -c -std=c99 -o $@ $< -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -D_LARGE_FILE_SOURCE
 
 clean:
-	rm -rf reg_rw *.o *.bin dma_to_device dma_from_device performance
-
+	rm -rf reg_rw *.o *.bin dma_to_device dma_from_device performance test_chrdev

XDMA/linux-kernel/tools/dma_from_device.c

@@ -8,9 +8,6 @@
  * LICENSE file in the root directory of this source tree)
  */
 
-#define _BSD_SOURCE
-#define _XOPEN_SOURCE 500
-#include <assert.h>
 #include <fcntl.h>
 #include <getopt.h>
 #include <stdint.h>

XDMA/linux-kernel/tools/dma_to_device.c

@@ -8,9 +8,6 @@
  * LICENSE file in the root directory of this source tree)
  */
 
-#define _BSD_SOURCE
-#define _XOPEN_SOURCE 500
-#include <assert.h>
 #include <fcntl.h>
 #include <getopt.h>
 #include <stdint.h>

XDMA/linux-kernel/tools/performance.c

@@ -24,7 +24,6 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 
-/* @TODO During kernel upstreaming, the IOCTL must move into the public user API of the kernel */
 #include "../xdma/cdev_sgdma.h"
 
 struct xdma_performance_ioctl perf;

XDMA/linux-kernel/tools/reg_rw.c

@@ -15,16 +15,14 @@
 #include <byteswap.h>
 #include <string.h>
 #include <errno.h>
-#include <signal.h>
 #include <fcntl.h>
 #include <ctype.h>
-#include <termios.h>
 
 #include <sys/types.h>
 #include <sys/mman.h>
 
-/* ltoh: little to host */
-/* htol: little to host */
+/* ltoh: little endian to host */
+/* htol: host to little endian */
 #if __BYTE_ORDER == __LITTLE_ENDIAN
 #define ltohl(x)       (x)
 #define ltohs(x)       (x)
@@ -37,14 +35,14 @@
 #define htols(x)     __bswap_16(x)
 #endif
 
-#define FATAL do { fprintf(stderr, "Error at line %d, file %s (%d) [%s]\n", __LINE__, __FILE__, errno, strerror(errno)); exit(1); } while(0)
-
 int main(int argc, char **argv)
 {
 	int fd;
+	int err = 0;
 	void *map;
 	uint32_t read_result, writeval;
 	off_t target;
+	off_t pgsz, target_aligned, offset;
 	/* access width */
 	char access_width = 'w';
 	char *device;
@@ -63,8 +61,14 @@ int main(int argc, char **argv)
 
 	device = strdup(argv[1]);
 	target = strtoul(argv[2], 0, 0);
-	printf("device: %s, address: 0x%08x, access %s.\n",
-		device, (unsigned int)target, argc >= 4 ? "write" : "read");
+	/* check for target page alignment */
+	pgsz = sysconf(_SC_PAGESIZE);
+	offset = target & (pgsz - 1);
+	target_aligned = target & (~(pgsz - 1));
+
+	printf("device: %s, address: 0x%lx (0x%lx+0x%lx), access %s.\n",
+		device, target, target_aligned, offset,
+			argc >= 4 ? "write" : "read");
 
 	/* data given? */
 	if (argc >= 4)
@@ -81,105 +85,95 @@ int main(int argc, char **argv)
 		access_width = 'w';
 	}
 
-	if ((fd = open(argv[1], O_RDWR | O_SYNC)) == -1)
-		FATAL;
+	if ((fd = open(argv[1], O_RDWR | O_SYNC)) == -1) {
+		printf("character device %s opened failed: %s.\n",
+			argv[1], strerror(errno));
+		return -errno;
+	}
 	printf("character device %s opened.\n", argv[1]);
-	fflush(stdout);
 
-	map = mmap(0, 4, PROT_READ | PROT_WRITE, MAP_SHARED, fd, target);
-	if (map == (void *)-1)
-		FATAL;
-	printf("Memory 0x%lx mapped at address %p.\n", target, map);
-	fflush(stdout);
+	map = mmap(NULL, offset + 4, PROT_READ | PROT_WRITE, MAP_SHARED, fd,
+		       	target_aligned);
+	if (map == (void *)-1) {
+		printf("Memory 0x%lx mapped failed: %s.\n",
+			target, strerror(errno));
+		err = 1;
+		goto close;
+	}
+	printf("Memory 0x%lx mapped at address %p.\n", target_aligned, map);
 
+	map += offset;
 	/* read only */
 	if (argc <= 4) {
 		switch (access_width) {
 		case 'b':
 			read_result = *((uint8_t *) map);
 			printf
-			    ("Read 8-bits value at address 0x%08x (%p): 0x%02x\n",
-			     (unsigned int)target, map,
-			     (unsigned int)read_result);
+			    ("Read 8-bits value at address 0x%lx (%p): 0x%02x\n",
+			     target, map, (unsigned int)read_result);
 			break;
 		case 'h':
 			read_result = *((uint16_t *) map);
 			/* swap 16-bit endianess if host is not little-endian */
 			read_result = ltohs(read_result);
 			printf
-			    ("Read 16-bit value at address 0x%08x (%p): 0x%04x\n",
-			     (unsigned int)target, map,
-			     (unsigned int)read_result);
+			    ("Read 16-bit value at address 0x%lx (%p): 0x%04x\n",
+			     target, map, (unsigned int)read_result);
 			break;
 		case 'w':
 			read_result = *((uint32_t *) map);
 			/* swap 32-bit endianess if host is not little-endian */
 			read_result = ltohl(read_result);
 			printf
-			    ("Read 32-bit value at address 0x%08x (%p): 0x%08x\n",
-			     (unsigned int)target, map,
-			     (unsigned int)read_result);
-			return (int)read_result;
+			    ("Read 32-bit value at address 0x%lx (%p): 0x%08x\n",
+			     target, map, (unsigned int)read_result);
 			break;
 		default:
 			fprintf(stderr, "Illegal data type '%c'.\n",
 				access_width);
-			exit(2);
+			err = 1;
+			goto unmap;
 		}
-		fflush(stdout);
 	}
+
 	/* data value given, i.e. writing? */
 	if (argc >= 5) {
 		writeval = strtoul(argv[4], 0, 0);
 		switch (access_width) {
 		case 'b':
-			printf("Write 8-bits value 0x%02x to 0x%08x (0x%p)\n",
-			       (unsigned int)writeval, (unsigned int)target,
-			       map);
+			printf("Write 8-bits value 0x%02x to 0x%lx (0x%p)\n",
+			       (unsigned int)writeval, target, map);
 			*((uint8_t *) map) = writeval;
-#if 0
-			if (argc > 4) {
-				read_result = *((uint8_t *) map);
-				printf("Written 0x%02x; readback 0x%02x\n",
-				       writeval, read_result);
-			}
-#endif
 			break;
 		case 'h':
-			printf("Write 16-bits value 0x%04x to 0x%08x (0x%p)\n",
-			       (unsigned int)writeval, (unsigned int)target,
-			       map);
+			printf("Write 16-bits value 0x%04x to 0x%lx (0x%p)\n",
+			       (unsigned int)writeval, target, map);
 			/* swap 16-bit endianess if host is not little-endian */
 			writeval = htols(writeval);
 			*((uint16_t *) map) = writeval;
-#if 0
-			if (argc > 4) {
-				read_result = *((uint16_t *) map);
-				printf("Written 0x%04x; readback 0x%04x\n",
-				       writeval, read_result);
-			}
-#endif
 			break;
 		case 'w':
-			printf("Write 32-bits value 0x%08x to 0x%08x (0x%p)\n",
-			       (unsigned int)writeval, (unsigned int)target,
-			       map);
+			printf("Write 32-bits value 0x%08x to 0x%lx (0x%p)\n",
+			       (unsigned int)writeval, target, map);
 			/* swap 32-bit endianess if host is not little-endian */
 			writeval = htoll(writeval);
 			*((uint32_t *) map) = writeval;
-#if 0
-			if (argc > 4) {
-				read_result = *((uint32_t *) map);
-				printf("Written 0x%08x; readback 0x%08x\n",
-				       writeval, read_result);
-			}
-#endif
 			break;
+		default:
+			fprintf(stderr, "Illegal data type '%c'.\n",
+				access_width);
+			err = 1;
+			goto unmap;
 		}
-		fflush(stdout);
 	}
-	if (munmap(map, 4) == -1)
-		FATAL;
+unmap:
+	map -= offset;
+	if (munmap(map, offset + 4) == -1) {
+		printf("Memory 0x%lx mapped failed: %s.\n",
+			target, strerror(errno));
+	}
+close:
 	close(fd);
-	return 0;
+
+	return err;
 }

XDMA/linux-kernel/tools/test_chrdev.c

+/*
+ * This file is part of the Xilinx DMA IP Core driver tools for Linux
+ *
+ * Copyright (c) 2016-present,  Xilinx, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under BSD-style license (found in the
+ * LICENSE file in the root directory of this source tree)
+ */
+
+#include <stdio.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+int main(int argc, char *argv[])
+{
+
+	int fd;
+	char *filename;
+
+	if ( (argc < 2) || (argc >= 3))
+	{
+		printf("usage %s <device file>\n",argv[0]);
+		return -1;
+	}
+	filename = argv[1];
+	fd = open(filename,O_RDWR);
+	if (fd < 0)
+	{
+		perror("Device open Failed");
+		return fd;
+	}
+	printf("%s Device open successfull\n",argv[1]);
+
+	if ( close(fd) )
+	{
+		perror("Device Close Failed");
+		return -1;
+	}
+	printf("%s Device close successfull\n",argv[1]);
+
+	return 0;
+}