tree ef68381a6e776a802038e39529e89a0d1390fae0
parent a4e2b347848bf626b822599329933887dc90e50f
author Michael Chan <mchan@broadcom.com> 1130366915 -0700
committer Jeff Garzik <jgarzik@pobox.com> 1130530050 -0400

[PATCH] tg3: fix ASF heartbeat

Change the ASF heart beat to 5 seconds for faster detection of system
crash. The driver sends the heartbeat every 2 seconds and the ASF
firmware will timeout and reset the device if no heartbeat is received
after 5 seconds. The old scheme of 2 minutes is ineffective.

tg3_write_mem_fast() is added to speed up the IO to send the heartbeat.
When no workaround is needed, it will use direct MMIO to memory space
to write to memory.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>