From 05a60dc4992bc4698ceff8e6737192ed818e7e34 Mon Sep 17 00:00:00 2001

From: Dan Williams <dan.j.williams@intel.com>

Date: Fri, 5 Aug 2022 13:37:56 -0700

Subject: [PATCH 201/217] cxl/test: Validate endpoint interleave geometry

Check that endpoint interleave geometry settings are updated once the

endpoint decoders are associated with a region.

Link: https://lore.kernel.org/r/165973187660.1528532.13832323649814892720.stgit@dwillia2-xfh.jf.intel.com

Reported-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Signed-off-by: Dan Williams <dan.j.williams@intel.com>

Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>

---

 test/cxl-region-sysfs.sh | 20 ++++++++++++++++++--

 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/test/cxl-region-sysfs.sh b/test/cxl-region-sysfs.sh

index 2582edb..110e037 100644

--- a/test/cxl-region-sysfs.sh

+++ b/test/cxl-region-sysfs.sh

@@ -44,8 +44,8 @@ uuidgen > /sys/bus/cxl/devices/$region/uuid

 # setup interleave geometry

 nr_targets=${#endpoint[@]}

 echo $nr_targets > /sys/bus/cxl/devices/$region/interleave_ways

-g=$(cat /sys/bus/cxl/devices/$decoder/interleave_granularity)

-echo $g > /sys/bus/cxl/devices/$region/interleave_granularity

+r_ig=$(cat /sys/bus/cxl/devices/$decoder/interleave_granularity)

+echo $r_ig > /sys/bus/cxl/devices/$region/interleave_granularity

 echo $((nr_targets * (256<<20))) > /sys/bus/cxl/devices/$region/size

 # grab the list of memdevs grouped by host-bridge interleave position

@@ -96,6 +96,22 @@ do

 done

 echo "$region added ${#endpoint[@]} targets: ${endpoint[@]}"

+# validate all endpoint decoders have the correct setting

+region_size=$(cat /sys/bus/cxl/devices/$region/size)

+region_base=$(cat /sys/bus/cxl/devices/$region/resource)

+for i in ${endpoint[@]}

+do

+	iw=$(cat /sys/bus/cxl/devices/$i/interleave_ways)

+	ig=$(cat /sys/bus/cxl/devices/$i/interleave_granularity)

+	[ $iw -ne $nr_targets ] && err "$LINENO: decoder: $i iw: $iw targets: $nr_targets"

+	[ $ig -ne $r_ig] && err "$LINENO: decoder: $i ig: $ig root ig: $r_ig"

+

+	sz=$(cat /sys/bus/cxl/devices/$i/size)

+	res=$(cat /sys/bus/cxl/devices/$i/start)

+	[ $sz -ne $region_size ] && err "$LINENO: decoder: $i sz: $sz region_size: $region_size"

+	[ $res -ne $region_base ] && err "$LINENO: decoder: $i base: $res region_base: $region_base"

+done

+

 # walk up the topology and commit all decoders

 echo 1 > /sys/bus/cxl/devices/$region/commit

-- 

2.27.0