Re: Little script for ISAPNP hotplug

[Simone Gotti <simone.gotti@email.it>]

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On Friday 09 April 2004 20:44, Simone Gotti wrote:

By the way, today I've did the C modules.isapnp parser program.

The program is called "strange but true" isapnpmodules.
it's very simple, as I've used like base the code of usbmodules.

The scripts are 2 and a patch for hotplug.functions:

isapnp.rc 
isapnp.agent
hotplug.functions.patch (the patch is against hotplug-20040401, the latest 
avaible on my gentoo system) 

I've noticed that for the 2.6 kernel is prefered the bash parsing and not the 
use of usbmodules and pcimodules. 
The problem with isapnp is that in a standard PC there are more then 10 isa 
devices so in this way modules.isapnp is parsed a lot of times and all is 
slow (at least 16 seconds). 
Using the isapnpmodules it take not more than 2 seconds. So I've prefered it 
to bash parsing in the 2.6 kernel too.

I don't know it I've do something wrong due to my low level of documentation 
on how isapnp works.

isapnp.rc:
It checks if isapnp exists, then it look for the presence of sysfs. If both 
exists then sysfs data is used. This because sysfs reports the id of the 
isapnpdevice in a "string" form, like PNP0501. And I'm not able to convert it 
in the Vendor and Function hex form with a bash script.

if they don't exists then "procfs" is used. The vendor and function hex value 
are retrieved from "/proc/bus/pnp/devices" and sent to the isapnp.agent

isapnp.agent:
This agent act like the pci agent.

I hope it'll be useful.

Bye!
-- 
Simone Gotti
<simone.gotti@email.it>

[-- Attachment #2: hotplug.functions.patch --]
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--- hotplug.functions	2004-04-10 18:53:02.000000000 +0200
+++ hotplug.functions.isapnp	2004-04-10 18:50:16.150626368 +0200
@@ -77,14 +77,20 @@
     FILENAME=$2
     DESCRIPTION=$3
 
+	case $TYPE in
+	isapnp)
+		LISTER=`which ${TYPE}modules 2> /dev/null` 
+		;;
+	*)
     # should we use usbmodules, pcimodules?  not on 2.5+, because sysfs
     # ought to expose the data we need to find all candidate drivers.
     # (on 2.5.48 it does for usb; but maybe not yet for pci.)
     case "$KERNEL" in
-    2.2*|2.3*|2.4*)	LISTER=`which ${TYPE}modules` ;;
+    2.2*|2.3*|2.4*)	LISTER=`which ${TYPE}modules 2> /dev/null` ;;
     *)			LISTER="" ;;
     esac
-
+	esac
+	
     if [ "$LISTER" != "" ]; then
 	# lister programs MIGHT be preferable to parsing from shell scripts:
 	# - usbmodules used for (a) multi-interface devices, (b) coldplug
@@ -105,12 +111,30 @@
 	    debug_mesg "pcimodules is scanning more than $PCI_SLOT ..."
 	    DRIVERS=`$LISTER`
 	    ;;
+	isapnp)
+		if [ "$ISAPNP_ID" != "" ]; then 
+		debug_mesg "isapnpmodules is scanning for the ISAPNP Id $ISAPNP_ID ..."
+	    DRIVERS=`$LISTER --id $ISAPNP_ID`
+		elif [ "$ISAPNP_STRING" != "" ]; then 
+		debug_mesg "isapnpmodules is scanning for the ISAPNP String $ISAPNP_STRING ..."
+	    DRIVERS=`$LISTER --string $ISAPNP_STRING`
+		fi
+	    ;;
 	esac
     fi
 
     # try parsing by shell scripts if no luck yet
     if [ "$DRIVERS" = "" ]; then
+	case $TYPE in
+	isapnp)
+		if [ "$LISTER" = "" ]; then
+		${TYPE}_map_modules < $FILENAME
+		fi
+		;;
+	*)
 	${TYPE}_map_modules < $FILENAME
+	;;
+	esac
     fi
 
     # FIXME remove dups and blacklisted modules from $DRIVERS here

[-- Attachment #3: isapnp.agent --]
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[-- Attachment #4: isapnp.rc --]
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[-- Attachment #5: isapnpmodules-0.1.tar.bz2 --]
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