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07e0ca29b5
freebsd-nq/sys
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Warner Losh 07e0ca29b5 Fix the so called "static bug" in polling mode. Some desktop cards 
have bad grounding characteristics which allow small static discharges
(or sunspots, we're not 100% sure which) to reach the bridge chip.
This causes the bridge chip to wedge/reset itself.  There's no known
cure short of rebooting.

The bug manifests itself by the STAT_CHG return 0xff when read.  This
is impossible because the upper bits are reserved (and therefore
zero).  In addition, some of the lower bits are one only for memory
cards, which OLDCARD doesn't support, so if they are set, something
seriously foobar'd is going on.

So far we've seen this in exactly one brand of pcmcia <-> isa bridge
which plug and play identifies only as "VIA PCMCIA CARD".  This card
just has buffers on the isa card and the actual bridge chip on the
remote slot, which is connected by long ribbon cables.  We think this
long cable run, coupled with the lack of coupling capacitors is a
major reason why it is so static sensitive while its bretheren aren't.

Work Supported by: Timing Solutions, Inc.

MFC After: 3 days
2001-05-14 21:08:20 +00:00
..
alpha Implement a few more floppy ioctl commands and IO options, namely: 2001-05-14 20:20:11 +00:00
amd64 Convert DEVFS from an "opt-in" to an "opt-out" option. 2001-05-13 20:52:40 +00:00
arm/include Correct disordering which is corresponding to bde's fix to 2001-02-17 14:51:11 +00:00
boot FICL 2.05 has a flawed definition of BASE. Fix it. 2001-05-10 05:13:09 +00:00
cam Exploit recent improvements in the disk minilayer to simplify error 2001-05-08 08:30:48 +00:00
coda Implement vop_std{get|put}pages() and add them to the default vop[]. 2001-05-01 08:34:45 +00:00
compat Avoid overflow when converting ticks to jiffies. 2001-05-09 11:41:54 +00:00
compile
conf Convert DEVFS from an "opt-in" to an "opt-out" option. 2001-05-13 20:52:40 +00:00
contrib/dev Actually biofinish(struct bio *, struct devstat *, int error) is more general 2001-05-06 20:00:03 +00:00
crypto Kernel crypto need binary key material, not symbolic ascii. 2001-03-10 13:02:58 +00:00
ddb Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
dev Implement a few more floppy ioctl commands and IO options, namely: 2001-05-14 20:20:11 +00:00
fs After a successfull poll of the cloning functions, match on the 2001-05-14 08:20:46 +00:00
geom Polish error handling with biofinish(). 2001-05-08 09:10:27 +00:00
gnu When running with soft updates, track the number of blocks and files 2001-05-08 07:42:20 +00:00
i4b pseudo-device -> device in kernel config. 2001-05-01 11:26:14 +00:00
i386 Implement a few more floppy ioctl commands and IO options, namely: 2001-05-14 20:20:11 +00:00
ia64 Convert DEVFS from an "opt-in" to an "opt-out" option. 2001-05-13 20:52:40 +00:00
isa Implement a few more floppy ioctl commands and IO options, namely: 2001-05-14 20:20:11 +00:00
isofs/cd9660 Implement vop_std{get|put}pages() and add them to the default vop[]. 2001-05-01 08:34:45 +00:00
kern When calling poll() on a fd associated with a filesystem, let POLLIN/POLLOUT 2001-05-14 14:37:25 +00:00
libkern Add function prototypes and base module for kernel side iconv library. 2001-04-09 09:39:29 +00:00
miscfs GC prototype for procfs_bmap() missed during a previous commit. 2001-05-11 23:37:37 +00:00
modules Update makefile to reflect vlan support. 2001-05-13 00:04:02 +00:00
msdosfs Implement vop_std{get|put}pages() and add them to the default vop[]. 2001-05-01 08:34:45 +00:00
net Get IP multicast working on VLAN devices: 2001-05-02 16:12:58 +00:00
netatalk Mechanical change to use <sys/queue.h> macro API instead of 2001-02-04 13:13:25 +00:00
netatm Silence some warnings 2001-03-20 10:42:49 +00:00
netgraph Don't reference a node after we dropped a reference to it 2001-04-11 22:04:47 +00:00
netinet In in_ifadown(), differentiate between whether the interface goes 2001-05-11 14:37:34 +00:00
netinet6 Fix typo in previous commit. 2001-04-20 08:43:20 +00:00
netipx Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
netkey Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
netnatm Change a couple of M_WAITOKs used in M_PREPEND() to M_TRYWAITs, which 2001-04-05 04:20:48 +00:00
netncp - Convert msleep(9) in select(2) and poll(2) to cv_*wait*(9). 2001-05-14 05:26:48 +00:00
netns
netsmb - Convert msleep(9) in select(2) and poll(2) to cv_*wait*(9). 2001-05-14 05:26:48 +00:00
nfs Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
nfsclient Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
nfsserver Undo part of the tangle of having sys/lock.h and sys/mutex.h included in 2001-05-01 08:13:21 +00:00
ntfs Implement vop_std{get|put}pages() and add them to the default vop[]. 2001-05-01 08:34:45 +00:00
nwfs Implement vop_std{get|put}pages() and add them to the default vop[]. 2001-05-01 08:34:45 +00:00
pc98 Convert DEVFS from an "opt-in" to an "opt-out" option. 2001-05-13 20:52:40 +00:00
pccard Fix the so called "static bug" in polling mode. Some desktop cards 2001-05-14 21:08:20 +00:00
pci Close PR 22208: bring chip out of suspend mode, because Windows might 2001-05-14 19:13:02 +00:00
posix4 o First step in cleaning up authorization code for the posix4 2001-05-06 16:15:42 +00:00
powerpc Trim lots of stuff that is now in MI code along with MD alpha code. 2001-05-10 17:58:35 +00:00
rpc Bring in a hybrid of SunSoft's transport-independent RPC (TI-RPC) and 2001-03-19 12:50:13 +00:00
svr4
sys Implement a few more floppy ioctl commands and IO options, namely: 2001-05-14 20:20:11 +00:00
tools replace calls to non-existant bail() subroutine with calls to 2001-03-23 11:48:50 +00:00
ufs Further fixes for deadlock in the presence of multiple snapshots. 2001-05-14 17:16:49 +00:00
vm Actually biofinish(struct bio *, struct devstat *, int error) is more general 2001-05-06 20:00:03 +00:00
Makefile