From 5f151392f0e43f1a9844ac1cccb27cb8035d3c32 Mon Sep 17 00:00:00 2001
From: Mitko Haralanov <mitko.haralanov@intel.com>
Date: Fri, 10 Jan 2014 11:41:30 -0500
Subject: [PATCH] truescale.cmds: Adjust QME724x TX tunings based on BP version

The Dell blade chassis got an updated backplane which
requires new transmitter tuning settings. With this
change the tuning script will query the driver for the
backplane version and set the TX settings according to
BP version and slot in the chassis.

Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
---
 ofed_scripts/truescale.cmds | 56 ++++++++++++++++++++++---------------
 1 file changed, 33 insertions(+), 23 deletions(-)

diff --git a/ofed_scripts/truescale.cmds b/ofed_scripts/truescale.cmds
index 934d6cd..693cb0b 100644
--- a/ofed_scripts/truescale.cmds
+++ b/ofed_scripts/truescale.cmds
@@ -164,7 +164,14 @@ setup_qmh()
 setup_qme()
 {
     local parm parmf sn pbase
-    local -i nunit=0 bay idx
+    local -i nunit=0 bay idx bpver=1
+    local -a bp0_idx bp1_idx set
+
+    # tx settings for Dell Backplane v1.0
+    bp0_idx=( 0 22 23 24 25 26 24 27 28 22 23 24 25 26 24 27 28 )
+    # tx settings for Dell Backplane v1.1
+    bp1_idx=( 0 29 29 30 31 32 33 30 29 29 29 30 31 32 33 30 29 )
+    
     for parm in parameters/${serdes_parm} ${serdes_parm}; do
 	if [ -e /sys/module/ib_qib/$parm ]; then
 		parmf=/sys/module/ib_qib/$parm
@@ -180,31 +187,34 @@ setup_qme()
     parm=( $(echo ${qb}*) )
     nunit=${#parm[*]}
 
+    if [ -e /sys/module/ib_qib/parameters/qme_bp ]; then
+	read bpver < /sys/module/ib_qib/parameters/qme_bp
+	if [ ${bpver} -ne 0 -a ${bpver} -ne 1 ]; then
+	    warn_and_log Invalid Dell backplane version (${bpver}). Defaulting to 1.
+	    bpver=1
+	fi
+    fi
+    eval 'set=( ${bp'${bpver}'_idx[@]} )'
+
     # we get two serial numbers normally, use 2nd if present, else first
     sn="$(dmidecode -t 2 | grep -i serial | tail -1)"
     case ${sn} in
-    *[sS]erial\ [nN]umber*)
-      bay="$(echo $sn | sed -e 's/\.$//' -e 's/.*\.0*//')"
-      case $bay in
-      1) idx=22 ;;
-      2|10|15) idx=20 ;;
-      3|7|11|12|13|14) idx=26 ;;
-      4) idx=25 ;;
-      5|6) idx=24 ;;
-      8) idx=21 ;;
-      9|16) idx=23 ;;
-      *) warn_and_log Unexpected QME7342 bay info: ${sn}, no Tx params
-	return;;
-      esac
-      # H1 is same for all QME bays, so no need to specify.
-      while [ $nunit -ne 0 ]; do
-	    (( nunit-- ))
-	    pbase="${pbase} ${nunit},1=${idx} ${nunit},2=${idx}"
-      done
-      echo -n ${pbase} > $parmf
-      ;;
-    *) warn_and_log No QME7342 bay information, no Tx params
-      return;;
+	*[sS]erial\ [nN]umber*)
+	    bay="$(echo $sn | sed -e 's/\.$//' -e 's/.*\.0*//')"
+	    if [ ${bay} -gt ${#set[@]} ]; then
+		warn_and_log Unexpected QME7342 bay info: ${sn}, no Tx params
+		return
+	    fi
+	    idx=${set[bay]}
+	    # H1 is same for all QME bays, so no need to specify.
+	    while [ $nunit -ne 0 ]; do
+		(( nunit-- ))
+		pbase="${pbase} ${nunit},1=${idx} ${nunit},2=${idx}"
+	    done
+	    echo -n ${pbase} > $parmf
+	    ;;
+	*) warn_and_log No QME7342 bay information, no Tx params
+	    return;;
     esac
 }
 
-- 
2.46.0