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17 May 2024, 11:00:25 UTC
Revision 7c5026aa9b81dd45df8d3f4e0be73e485976a8b6 authored by Matt Carlson on 02 May 2008, 23:49:29 UTC, committed by David S. Miller on 02 May 2008, 23:49:29 UTC 
tg3: Add link state reporting to UMP firmware
 
All variants of the 5714, 5715, and 5780 offer a feature called the
"Universal Management Port".  This feature is implemented in firmware
and is largely transparent to the driver, except...

It turns out that the UMP firmware needs to know the current status
of the link.  Because the firmware cannot touch the PHY registers while
the driver is in control of the device, it needs the driver to report
link status changes through an additional handshaking mechanism.
Without this handshake, it has been observed in the field that the UMP
firmware will not operate correctly.

This patch implements the new handshake with the UMP firmware.  Since
the handshake uses the same mechanism ASF heartbeats use, code was
added to detect and wait for completion of a pending previous event.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent 109115e
History
Tip revision: 7c5026aa9b81dd45df8d3f4e0be73e485976a8b6 authored by Matt Carlson on 02 May 2008, 23:49:29 UTC
tg3: Add link state reporting to UMP firmware
Tip revision: 7c5026a
File Mode Size
Documentation
arch
block
crypto
drivers
fs
include
init
ipc
kernel
lib
mm
net
samples
scripts
security
sound
usr
virt
.gitignore -rw-r--r-- 682 bytes
.mailmap -rw-r--r-- 3.6 KB
COPYING -rw-r--r-- 18.3 KB
CREDITS -rw-r--r-- 90.5 KB
Kbuild -rw-r--r-- 2.4 KB
MAINTAINERS -rw-r--r-- 96.8 KB
Makefile -rw-r--r-- 53.7 KB
README -rw-r--r-- 16.5 KB
REPORTING-BUGS -rw-r--r-- 3.1 KB

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