On Sun, Nov 06, 2022 at 03:48:07PM -0800, Dan Williams wrote: > A recent extension of cxl_test adds 2 memory devices attached through a > switch to a single ported host-bridge to reproduce a bug report. > > Reported-by: Jonathan Cameron <[email protected]> > Link: http://lore.kernel.org/r/[email protected] > Signed-off-by: Dan Williams <[email protected]>
Tested-by: Alison Schofield <[email protected]> > --- > test/cxl-topology.sh | 48 +++++++++++++++++++++++++++++------------------- > 1 file changed, 29 insertions(+), 19 deletions(-) > > diff --git a/test/cxl-topology.sh b/test/cxl-topology.sh > index 1f15d29f0600..f1e0a2b01e98 100644 > --- a/test/cxl-topology.sh > +++ b/test/cxl-topology.sh > @@ -29,27 +29,30 @@ count=$(jq "length" <<< $json) > root=$(jq -r ".[] | .bus" <<< $json) > > > -# validate 2 host bridges under a root port > +# validate 2 or 3 host bridges under a root port > port_sort="sort_by(.port | .[4:] | tonumber)" > json=$($CXL list -b cxl_test -BP) > count=$(jq ".[] | .[\"ports:$root\"] | length" <<< $json) > -((count == 2)) || err "$LINENO" > +((count == 2)) || ((count == 3)) || err "$LINENO" > +bridges=$count > > bridge[0]=$(jq -r ".[] | .[\"ports:$root\"] | $port_sort | .[0].port" <<< > $json) > bridge[1]=$(jq -r ".[] | .[\"ports:$root\"] | $port_sort | .[1].port" <<< > $json) > +((bridges > 2)) && bridge[2]=$(jq -r ".[] | .[\"ports:$root\"] | $port_sort > | .[2].port" <<< $json) > > +# validate root ports per host bridge > +check_host_bridge() > +{ > + json=$($CXL list -b cxl_test -T -p $1) > + count=$(jq ".[] | .dports | length" <<< $json) > + ((count == $2)) || err "$3" > +} > > -# validate 2 root ports per host bridge > -json=$($CXL list -b cxl_test -T -p ${bridge[0]}) > -count=$(jq ".[] | .dports | length" <<< $json) > -((count == 2)) || err "$LINENO" > - > -json=$($CXL list -b cxl_test -T -p ${bridge[1]}) > -count=$(jq ".[] | .dports | length" <<< $json) > -((count == 2)) || err "$LINENO" > +check_host_bridge ${bridge[0]} 2 $LINENO > +check_host_bridge ${bridge[1]} 2 $LINENO > +((bridges > 2)) && check_host_bridge ${bridge[2]} 1 $LINENO > > - > -# validate 2 switches per-root port > +# validate 2 switches per root-port > json=$($CXL list -b cxl_test -P -p ${bridge[0]}) > count=$(jq ".[] | .[\"ports:${bridge[0]}\"] | length" <<< $json) > ((count == 2)) || err "$LINENO" > @@ -65,9 +68,9 @@ switch[2]=$(jq -r ".[] | .[\"ports:${bridge[1]}\"] | > $port_sort | .[0].host" <<< > switch[3]=$(jq -r ".[] | .[\"ports:${bridge[1]}\"] | $port_sort | .[1].host" > <<< $json) > > > -# validate the expected properties of the 4 root decoders > -# use the size of the first decoder to determine the cxl_test version / > -# properties > +# validate the expected properties of the 4 or 5 root decoders > +# use the size of the first decoder to determine the > +# cxl_test version / properties > json=$($CXL list -b cxl_test -D -d root) > port_id=${root:4} > port_id_len=${#port_id} > @@ -103,12 +106,19 @@ count=$(jq "[ $decoder_sort | .[3] | > select(.nr_targets == 2) ] | length" <<< $json) > ((count == 1)) || err "$LINENO" > > +if [ $bridges -eq 3 ]; then > + count=$(jq "[ $decoder_sort | .[4] | > + select(.pmem_capable == true) | > + select(.size == $decoder_base_size) | > + select(.nr_targets == 1) ] | length" <<< $json) > + ((count == 1)) || err "$LINENO" > +fi > > -# check that all 8 cxl_test memdevs are enabled by default and have a > +# check that all 8 or 10 cxl_test memdevs are enabled by default and have a > # pmem size of 256M, or 1G > json=$($CXL list -b cxl_test -M) > count=$(jq "map(select(.pmem_size == $pmem_size)) | length" <<< $json) > -((count == 8)) || err "$LINENO" > +((bridges == 2 && count == 8 || bridges == 3 && count == 10)) || err > "$LINENO" > > > # check that switch ports disappear after all of their memdevs have been > @@ -151,8 +161,8 @@ do > done > > > -# validate host bridge tear down > -for b in ${bridge[@]} > +# validate host bridge tear down for the first 2 bridges > +for b in ${bridge[0]} ${bridge[1]} > do > $CXL disable-port $b -f > json=$($CXL list -M -i -p $b) >
