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From bcc9897b38be91df38f81fb3105d2351f7941377 Mon Sep 17 00:00:00 2001
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From: Dan Williams <dan.j.williams@intel.com>
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Date: Fri, 5 Aug 2022 13:38:26 -0700
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Subject: [PATCH 206/217] cxl/test: Validate switch port settings in
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cxl-region-sysfs.sh
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A recent kernel fix to add the missing update of endpoint decoder HPA range
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settings regressed switch decoder HPA range settings. Add validation for
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switch port settings to avoid regressions like that going forward.
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Link: https://lore.kernel.org/r/165973190625.1528532.12244196912617964754.stgit@dwillia2-xfh.jf.intel.com
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Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
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---
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test/cxl-region-sysfs.sh | 32 ++++++++++++++++++++++++++++++++
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1 file changed, 32 insertions(+)
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diff --git a/test/cxl-region-sysfs.sh b/test/cxl-region-sysfs.sh
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index 110e037..ae0f556 100644
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--- a/test/cxl-region-sysfs.sh
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+++ b/test/cxl-region-sysfs.sh
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@@ -112,6 +112,38 @@ do
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[ $res -ne $region_base ] && err "$LINENO: decoder: $i base: $res region_base: $region_base"
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done
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+# validate all switch decoders have the correct settings
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+nr_switches=$((nr_targets/2))
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+nr_host_bridges=$((nr_switches/2))
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+nr_switch_decoders=$((nr_switches + nr_host_bridges))
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+
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+json=$($CXL list -D -r $region -d switch)
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+readarray -t switch_decoders < <(echo $json | jq -r ".[].decoder")
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+
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+[ ${#switch_decoders[@]} -ne $nr_switch_decoders ] && err \
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+"$LINENO: expected $nr_switch_decoders got ${#switch_decoders[@]} switch decoders"
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+
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+for i in ${switch_decoders[@]}
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+do
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+ decoder=$(echo $json | jq -r ".[] | select(.decoder == \"$i\")")
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+ id=${i#decoder}
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+ port_id=${id%.*}
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+ depth=$($CXL list -p $port_id -S | jq -r ".[].depth")
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+ iw=$(echo $decoder | jq -r ".interleave_ways")
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+ ig=$(echo $decoder | jq -r ".interleave_granularity")
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+
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+ [ $iw -ne 2 ] && err "$LINENO: decoder: $i iw: $iw targets: 2"
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+ [ $ig -ne $((r_ig << depth)) ] && err \
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+ "$LINENO: decoder: $i ig: $ig switch_ig: $((r_ig << depth))"
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+
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+ res=$(echo $decoder | jq -r ".resource")
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+ sz=$(echo $decoder | jq -r ".size")
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+ [ $sz -ne $region_size ] && err \
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+ "$LINENO: decoder: $i sz: $sz region_size: $region_size"
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+ [ $res -ne $region_base ] && err \
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+ "$LINENO: decoder: $i base: $res region_base: $region_base"
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+done
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+
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# walk up the topology and commit all decoders
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echo 1 > /sys/bus/cxl/devices/$region/commit
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--
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2.27.0
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