Date: Sat, 13 Oct 2001 03:28:03 -0700 (PDT) From: Kazutaka YOKOTA <yokota@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/isa psm.c Message-ID: <200110131028.f9DAS3x82894@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
yokota 2001/10/13 03:28:03 PDT
Modified files:
sys/isa psm.c
Log:
Hack for the "out-of-sync" error.
- Count the number of this error.
- When the error is detected for the first time, the psm driver will
throw few data bytes (up to entire packet size) and see if it can
get back to sync.
- If the error still persists, the psm driver disable/enable the mouse
and see if it works.
- If the error still persists and the count goes up to 20,
the psm driver reset and reinitialize the mouse. The counter
is reset to zero.
- It also discards an incomplete data packet when the interval
between two consequtive bytes are longer than pre-defined timeout
(2 seconds). The last byte which arrived late will be regarded as
the first byte of a new packet. This is louie's idea.
You may see the following error logs during the above operations:
"psmintr: delay too long; resetting byte count"
"psmintr: out of sync (%04x != %04x)"
"psmintr: discard a byte (%d)"
"psmintr: re-enable the mouse"
"psmintr: reset the mouse"
MFC after: 1 month
Revision Changes Path
1.42 +153 -110 src/sys/isa/psm.c
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe cvs-all" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200110131028.f9DAS3x82894>