Date: Mon, 7 Aug 2000 15:07:12 +0200 (CEST) From: pa@cdg.chalmers.se To: FreeBSD-gnats-submit@freebsd.org Subject: bin/20454: pccardd looses track of available I/O space Message-ID: <200008071307.PAA00340@bigblue.cdg.chalmers.se>
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>Number: 20454
>Category: bin
>Synopsis: pccardd looses track of available I/O space
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Aug 07 06:10:05 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator: Per Andersson
>Release: FreeBSD 4.1-STABLE i386
>Organization:
>Environment:
4.1-STABLE from about 2000-08-01
IBM Tp570E + 3Com 3C574
cardc.c:
"$FreeBSD: src/usr.sbin/pccard/pccardd/cardd.c,v 1.46.2.4 2000/07/18 04:59:39 imp Exp $";
>Description:
If pccardd fails to allocate I/O space when you insert a card it will
release the cards I/O space in the wrong place when you remove it.
>How-To-Repeat:
Make an pccard.conf with to little I/O space:
------------------------------------------------
# PCCARD configuration file
#
# Removing all IRQ conflicts from this file can't be done because of some
# IRQ-selfish PC-cards. So if you want to use some of these cards in
# your machine, you will be forced to modify their IRQ parameters from
# the following list.
#
# IRQ == 0 means "allocate free IRQ from IRQ pool"
# IRQ == 16 means "do not use IRQ (e.g. PIO mode)"
#
#
# Generally available IO ports
io 0x300-0x310
# Generally available IRQs (Built-in sound-card owners remove 5)
irq 3 5
# Available memory slots
memory 0xd4000 96k
#
debuglevel 9
# 3Com Megahertz 574B
card "3Com" "Megahertz 574B"
config 0x1 "ep0" ? 0x1
insert /etc/pccard_ether $device
remove /sbin/ifconfig $device delete
------------------------------------------------
Insert card:
Aug 7 14:27:59 bigblue pccardd[47]: Card "3Com"("Megahertz 574B") [B] [001] matched "3Com" ("Megahertz 574B") [(null)] [(null)]
Aug 7 14:27:59 bigblue pccardd[47]: Resource allocation failure for 3Com
Remove card:
Aug 7 14:28:08 bigblue /kernel: pccard: card removed, slot 1
Aug 7 14:28:08 bigblue pccardd[47]: ep0: 3Com (Megahertz 574B) removed.
Aug 7 14:28:08 bigblue pccardd[47]: Releasing I/O addr 0x0, size 32
(I have added the above log message)
Insert card again:
Aug 7 14:28:21 bigblue /kernel: pccard: card inserted, slot 1
Machine either crashes or hangs.
>Fix:
Works for me, but might not be the best solution:
*** cardd.c.orig Thu Aug 3 17:15:21 2000
--- cardd.c Mon Aug 7 14:59:14 2000
***************
*** 204,213 ****
sp->cis = 0;
sp->config = 0;
/* release io */
! bit_nset(io_avail, sp->io.addr, sp->io.addr + sp->io.size - 1);
/* release irq */
! if (sp->irq)
pool_irq[sp->irq] = 1;
}
/* CIS string comparison */
--- 204,218 ----
sp->cis = 0;
sp->config = 0;
/* release io */
! if(sp->io.addr) {
! logmsg("Releasing I/O addr 0x%x, size %d\n", sp->io.addr, sp->io.size);
! bit_nset(io_avail, sp->io.addr, sp->io.addr + sp->io.size - 1);
! }
/* release irq */
! if (sp->irq) {
! logmsg("Releasing IRQ %d\n", sp->irq);
pool_irq[sp->irq] = 1;
+ }
}
/* CIS string comparison */
>Release-Note:
>Audit-Trail:
>Unformatted:
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