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authorCorey Minyard <minyard@acm.org>2005-11-07 01:00:02 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-07 07:53:44 -0800
commitc3e7e7916ec61cf58c88af12f4db17f28cffd83a (patch)
tree4d5be7158f79a9a2b1572e60af5c3645afa333c2 /drivers/char/ipmi/ipmi_si_sm.h
parent21dcd300b15f87ce10df8773d029708f27499aa7 (diff)
downloadvexpress-lsk-c3e7e7916ec61cf58c88af12f4db17f28cffd83a.tar.gz
[PATCH] ipmi: kcs error0 delay
BMCs can get into ERROR0 state while flashing new firmware, particularly while the BMC is erasing the next flash block, which may take a just under 2 seconds on a Dell PowerEdge 2800 (1.75 seconds typical), during which time the single-threaded firmware may not be able to process new commands. In particular, clearing OBF may not take effect immediately. We want it to delay in ERROR0 after clearing OBF a bit waiting for OBF to actually be clear before proceeding. This introduces a new return value from the LLDD's event loop, SI_SM_CALL_WITH_TICK_DELAY. This means the calling thread/timer should schedule_timeout() at least 1 tick, rather than busy-wait. This is a longer delay than SI_SM_CALL_WITH_DELAY, which is typically a 250us busy-wait. Signed-off-by: Matt Domsch <Matt_Domsch@dell.com> Signed-off-by: Corey Minyard <minyard@acm.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char/ipmi/ipmi_si_sm.h')
-rw-r--r--drivers/char/ipmi/ipmi_si_sm.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/char/ipmi/ipmi_si_sm.h b/drivers/char/ipmi/ipmi_si_sm.h
index 62791dd4298..bf3d4962d6a 100644
--- a/drivers/char/ipmi/ipmi_si_sm.h
+++ b/drivers/char/ipmi/ipmi_si_sm.h
@@ -62,6 +62,7 @@ enum si_sm_result
{
SI_SM_CALL_WITHOUT_DELAY, /* Call the driver again immediately */
SI_SM_CALL_WITH_DELAY, /* Delay some before calling again. */
+ SI_SM_CALL_WITH_TICK_DELAY, /* Delay at least 1 tick before calling again. */
SI_SM_TRANSACTION_COMPLETE, /* A transaction is finished. */
SI_SM_IDLE, /* The SM is in idle state. */
SI_SM_HOSED, /* The hardware violated the state machine. */