[PATCH 1/2] Support sysfs in ofpath
Milan Kupcevic
milan at physics.harvard.edu
Fri Aug 5 06:11:14 EST 2011
Get scsi, sata, and firewire drive info from sysfs as legacy /proc/scsi
interface does not exist anymore.
Signed-off-by: Milan Kupcevic <milan at physics.harvard.edu>
---
ybin/ofpath | 261 ++++++++++++++++++++++++++---------------------------------
1 files changed, 116 insertions(+), 145 deletions(-)
diff --git a/ybin/ofpath b/ybin/ofpath
index aff5583..7557484 100755
--- a/ybin/ofpath
+++ b/ybin/ofpath
@@ -3,6 +3,9 @@
###############################################################################
##
## ofpath: determine OpenFirmware path from unix device node
+##
+## Copyright (C) 2010, 2011 Milan Kupcevic
+##
## Copyright (C) 2000, 2001, 2002, 2003 Ethan Benson
##
## Portions based on show_of_path.sh:
@@ -27,7 +30,7 @@
PATH="/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin"
PRG="${0##*/}"
-VERSION=1.0.7
+VERSION=1.0.7+debian2
DEBUG=0
export LC_COLLATE=C
@@ -36,9 +39,10 @@ version()
{
echo \
"$PRG $VERSION
-Written by Ethan Benson
+Written by Ethan Benson, portions rewritten by Milan Kupcevic
Portions based on show_of_path.sh written by Olaf Hering
+Copyright (C) 2010, 2011 Milan Kupcevic
Copyright (C) 2000, 2001, 2002, 2003 Ethan Benson
Portions Copyright (C) 2000 Olaf Hering
This is free software; see the source for copying conditions. There is NO
@@ -181,158 +185,125 @@ printhost()
return 0
}
+# read OpenFirmware device path from its corresponding devspec
+find_of_path()
+{
+ [ -z "$1" ] && return
+ [ -f "$1/devspec" ] && {
+ OF_PATH="`cat $1/devspec`"
+ SYS_PATH="$1"
+ return
+ }
+ find_of_path "${1%/*}"
+}
+
## this finds information we need on both newworld and oldworld macs.
## mainly what scsi host a disk is attached to.
scsiinfo()
{
- ## see if system has scsi at all
- if [ ! -f /proc/scsi/scsi ] ; then
- local kver="$(uname -r)"
- case "$kver" in
- 2.5.*|2.6.*)
- if [ -d /sys/bus/scsi/devices -a \
- -n "$(ls /sys/bus/scsi/devices 2>/dev/null)" ] ; then
- echo 1>&2 "$PRG: /proc/scsi/scsi does not exist"
- echo 1>&2 "$PRG: Make sure you compiled your kernel with CONFIG_SCSI_PROC_FS=y"
- return 1
- fi
- ;;
- esac
- echo 1>&2 "$PRG: /dev/$DEVNODE: Device not configured"
- return 1
- fi
-
- ## first we have to figure out the SCSI ID, have to do that
- ## anyway [to] find the attached scsi disks = "Direct-Access" and
- ## stop at sda=1 sdb=2 or whatever count in 3 lines steps
-
- ## get last letter of device node, ie sda -> a
- SUBNODE=${DEVNODE##*sd}
-
- ## turn SUBNODE above into a number starting at 1, ie a -> 1
- SUBDEV="$(smalltr $SUBNODE)"
- [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: SUBNODE=$SUBNODE SUBDEV=$SUBDEV"
-
- DEVCOUNT=0
-
- ## copy scsi file into a variable removing "Attached Devices"
- ## which is the first line. this avoids a lot of
- ## [incmopatible] crap later, and improves readability.
-
- ## find number of lines once and recycle that number, to save
- ## some time (linecount is a bit slow). subtract one line
- ## to scrap Attached Devices:
-
- SCSILINES="$(($(linecount /proc/scsi/scsi) - 1))"
-
- if [ "$SUBDEV" -gt "$(cat /proc/scsi/scsi | grep Direct-Access | linecount)" ] ; then
- echo 1>&2 "$PRG: /dev/$DEVNODE: Device not configured"
- return 1
- fi
-
- PROCSCSI="$(cat /proc/scsi/scsi | tail -n $SCSILINES)"
-
- for i in $(smallseq $(($SCSILINES / 3))) ; do
-
- ## put every scsi device into one single line
- DEVINFO="$(echo "$PROCSCSI" | head -n $(($i * 3)) | tail -n 3)"
- [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVINFO=$DEVINFO"
-
- ## cut the type field, expect "Direct-Access" later.
- DEVTYPE="$(v=$(echo ${DEVINFO##*Type: }) ; echo ${v%% *})"
- [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVTYPE=$DEVTYPE"
-
- ## get the device id.
- DEVID="$(v=$(echo ${DEVINFO##*Id: }) ; n=$(echo ${v%% *}) ; echo ${n#*0})"
- [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVID=$DEVID"
-
- ## get the scsi host id.
- DEVHOST="$(v=$(echo ${DEVINFO##*Host: scsi}) ; echo ${v%% *})"
- [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVHOST=$DEVHOST"
-
- if [ "$DEVTYPE" = "Direct-Access" ] || [ "$DEVTYPE" = "Direct-Access-RBC" ] ; then
- DEVCOUNT="$(($DEVCOUNT + 1))"
- [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVCOUNT=$DEVCOUNT"
- if [ "$SUBDEV" = "$DEVCOUNT" ] ; then
- DEVICE_HOST=$DEVHOST
- DEVICE_ID=$DEVID
- [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVICE_HOST=$DEVICE_HOST"
- break
- fi
- fi
- done
-
- ## figure out what the scsi driver is, it is /proc/scsi/dirname.
- [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: DEVICE_HOST=$DEVICE_HOST"
- SCSI_DRIVER="$(x=`ls /proc/scsi/*/$DEVICE_HOST 2>/dev/null | cat` ; y=`echo ${x##*proc/scsi/}` ; echo ${y%%/*})"
- [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: SCSI_DRIVER=$SCSI_DRIVER"
-
- ## figure out which host we found.
- SCSI_HOSTNUMBER="$(v=`ls /proc/scsi/$SCSI_DRIVER/* 2>/dev/null | cat | grep -n "$DEVICE_HOST\>"` ; echo ${v%%:*})"
- [ "$DEBUG" = 1 ] && echo 1>&2 "$PRG: DEBUG: SCSI_HOSTNUMBER=$SCSI_HOSTNUMBER"
-
+ SYS_DEVICE="`readlink -f /sys/block/$DEVNODE/device`"
+
+ [ -e "$SYS_DEVICE" ] && {
+
+ SCSI_DEVICE=${SYS_DEVICE##*/}
+ HOST_ID=${SCSI_DEVICE%%:*}
+ BUS_ID=`T=${SCSI_DEVICE#*:}; echo ${T%%:*}`
+ DEVICE_ID=`T=${SCSI_DEVICE#*:*:}; echo ${T%%:*}`
+ LUN_ID=${SCSI_DEVICE##*:}
+
+ OF_PATH=;find_of_path "$SYS_DEVICE"
+
+ SCSI_DRIVER=`cat /sys/class/scsi_host/host$HOST_ID/proc_name 2>/dev/null`
+
+ SCSI_NAME=`cat /proc/device-tree$OF_PATH/name 2>/dev/null`
+
+ IEEE1394_ID=`cat /sys/block/$DEVNODE/device/ieee1394_id 2>/dev/null`
+ IEEE1394_ID=${IEEE1394_ID%%:*}
+
+ PLUG_ID=$(ls -dv $SYS_PATH/host* 2>/dev/null | grep -n "/host$HOST_ID$")
+ PLUG_ID=$((${PLUG_ID%%:*}-1))
+
+ PART=${PARTITION:+:$PARTITION}
+
+ [ "$LUN_ID" != "0" ] && LUNX=`printf ",%x" $LUN_ID`
+
+ [ "$DEBUG" = "1" ] && {
+ echo SYS_DEVICE=$SYS_DEVICE
+ echo SCSI_DEVICE=$SCSI_DEVICE
+ echo HOST_ID=$HOST_ID
+ echo BUS_ID=$BUS_ID
+ echo DEVICE_ID=$DEVICE_ID
+ echo LUN_ID=$LUN_ID
+ echo PLUG_ID=$PLUG_ID
+ echo IEEE1394_ID=$IEEE1394_ID
+ echo SCSI_NAME=$SCSI_NAME
+ echo SCSI_DRIVER=$SCSI_DRIVER
+ echo SYS_PATH=$SYS_PATH
+ echo OF_PATH=$OF_PATH
+ echo PART=$PART
+ echo LUNX=$LUNX
+ }
+
+ SCSI_DRIVER=${SCSI_DRIVER:?}
+
+ [ -z "$OF_PATH" ] && {
+ echo 1>&2 "Cannot find $DEVNODE among OpenFirmware registered devices"
+
+ exit 1
+ }
+
return 0
+ }
+
+ echo 1>&2 "Link /sys/block/$DEVNODE/device does not exist"
+
+ exit 1
}
-## generic function that can find OF device paths for scsi devices,
+## add OF device node to the host OF path,
## must be run after scsiinfo().
scsi_ofpath()
{
- case "$SCSI_DRIVER" in
- aic7xxx)
- HOST_LIST="$(for i in `find /proc/device-tree -name compatible` ; do
- lgrep "$i" "^ADPT" "^pci900[45]" "^pciclass,01000" ; done)"
- DEVICE_PATH="$(printhost $SCSI_HOSTNUMBER $HOST_LIST)"
- echo "${DEVICE_PATH##*device-tree}/@$DEVICE_ID:$PARTITION"
- ;;
- sym53c8xx)
- HOST_LIST="$(for i in `find /proc/device-tree -name compatible` ; do
- lgrep "$i" "^Symbios" "^pci1000" "^pciclass,01000" ; done)"
- DEVICE_PATH="$(printhost $SCSI_HOSTNUMBER $HOST_LIST)"
- echo "${DEVICE_PATH##*device-tree}/@$DEVICE_ID:$PARTITION"
- ;;
- mesh)
- HOST_LIST="$(for i in `find /proc/device-tree -name compatible` ; do
- lgrep "$i" "mesh" ; done)"
- DEVICE_PATH="$(printhost $SCSI_HOSTNUMBER $HOST_LIST)"
- echo "${DEVICE_PATH##*device-tree}/@$DEVICE_ID:$PARTITION"
- ;;
- ata_k2|sata_svw)
- #Not all G5 device trees have a compatible "k2-sata" node
- #per channel use parent
- HOST_LIST="$(for i in `find /proc/device-tree -name compatible ` ; do
- lgrep "$i" "k2-s-ata" ; done | sort)"
- DEVICE_PATH="$(printhost $SCSI_HOSTNUMBER $HOST_LIST)"
- K2_DEVICE_ID=0
- while [ "$DEVICE_PATH" = "" ] ; do
- SCSI_HOSTNUMBER=`expr $SCSI_HOSTNUMBER - 1`
- let "K2_DEVICE_ID += 1"
- DEVICE_PATH="$(printhost $SCSI_HOSTNUMBER $HOST_LIST)"
- done
- echo "${DEVICE_PATH##*device-tree}/k2-sata@$K2_DEVICE_ID/disk at 0:$PARTITION"
- ;;
- usb-storage)
- HOST_LIST="$(for i in `find /proc/device-tree -name name | grep usb` ; do
- lgrep "$i" "disk" ; done)"
- DEVICE_PATH="$(printhost $SCSI_HOSTNUMBER $HOST_LIST)"
- echo "${DEVICE_PATH##*device-tree}:$PARTITION"
- ;;
- sbp2|"")
- # sbp-2 driver may not have a dir in /proc/scsi
- HOST_LIST="$(for i in `find /proc/device-tree -name name` ; do
- lgrep "$i" "sbp-2" ; done)"
- if [ "$SCSI_HOSTNUMBER" = "" ] ; then
- SCSI_HOSTNUMBER=1
- fi
- DEVICE_PATH="$(printhost $SCSI_HOSTNUMBER $HOST_LIST)"
- echo "${DEVICE_PATH##*device-tree}/disk at 0:$PARTITION"
- ;;
- *)
- echo 1>&2 "$PRG: Driver: $SCSI_DRIVER is not supported"
- return 1
- ;;
+ if [ -d "/proc/device-tree$OF_PATH/sas" ] ; then
+
+ SAS_ID=$(( ($BUS_ID << 16) | ($DEVICE_ID << 8) | $LUN_ID))
+ printf "%s/sas/disk@%x%s\n" $OF_PATH $SAS_ID $LUNX$PART
+
+ elif [ -d "/proc/device-tree$OF_PATH/scsi@`printf %x $BUS_ID`" ] ; then
+
+ printf "%s/scsi@%x/@%x%s\n" $OF_PATH $BUS_ID $DEVICE_ID $LUNX$PART
+
+ else
+
+ case "$SCSI_DRIVER-$SCSI_NAME" in
+ aic7xxx-*|sym53c8xx-*|mesh-*|*-scsi)
+ printf "%s/@%x%s\n" $OF_PATH $DEVICE_ID $LUNX$PART
+ ;;
+ sata_sil-*|sata_vsc-*)
+ printf "%s/@%x%s\n" $OF_PATH $(($PLUG_ID * 2)) $PART
+ ;;
+ sata_svw-*|*-pci-ata)
+ printf "%s/@%x/@%x%s\n" $OF_PATH $PLUG_ID $DEVICE_ID $PART
+ ;;
+ pata_macio-*)
+ printf "%s/@%x%s\n" $OF_PATH $DEVICE_ID $PART
+ ;;
+ sbp2-*)
+ IEEE1394_ID=${IEEE1394_ID:?}
+ printf "%s/node@%s/sbp-2/@%x%s\n" $OF_PATH $IEEE1394_ID $DEVICE_ID $PART
+ ;;
+ ipr-obsidian)
+ printf "%s/@%x,%x%s\n" $OF_PATH $BUS_ID $DEVICE_ID $LUNX$PART
+ ;;
+ *)
+ echo 1>&2 "${PRG}: ${SCSI_NAME} (${SCSI_DRIVER}) is not supported"
+ return 1
+ ;;
esac
- return 0
+
+ fi
+
+ return 0
}
ide_ofpath()
@@ -432,11 +403,11 @@ ide_ofpath()
case "$DEVNODE" in
hda|hdc|hde|hdg|hdi|hdk|hdm|hdo)
- echo "${DEVSPEC}${MASTER}:$PARTITION"
+ echo "${DEVSPEC}${MASTER}${PARTITION:+:${PARTITION}}"
return 0
;;
hdb|hdd|hdf|hdh|hdj|hdl|hdn|hdp)
- echo "${DEVSPEC}${SLAVE}:$PARTITION"
+ echo "${DEVSPEC}${SLAVE}${PARTITION:+:${PARTITION}}"
return 0
;;
*)
--
1.7.2.5
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