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Pause the sequencer when message only requests complete. This allows the

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kernel driver to know the exact state of the sequencer after a BUS DEVICE
RESET or ABORT completes so it can properly clean up the request.
This commit is contained in:
Justin T. Gibbs 1995-07-31 08:21:59 +00:00
parent 75f2898f9a
commit 4dc2fc9088
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=9810
1 changed files with 8 additions and 2 deletions
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10
sys/dev/aic7xxx/aic7xxx.seq
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@ -41,7 +41,7 @@
#
##-M#########################################################################
VERSION AIC7XXX_SEQ_VER "$Id: aic7xxx.seq,v 1.16 1995/05/17 07:05:49 davidg Exp $"
VERSION AIC7XXX_SEQ_VER "$Id: aic7xxx.seq,v 1.17 1995/07/04 20:58:57 gibbs Exp $"
SCBMASK = 0x1f
@ -160,6 +160,7 @@ AWAITING_MSG = 0xa1 # Kernel requested to specify
# (command was null), so tell
# it that it can fill the
# message buffer.
IMMEDDONE = 0xb1
# The host adapter card (at least the BIOS) uses 20-2f for SCSI
@ -700,10 +701,15 @@ status_ok:
clear_a:
xor ACTIVE_A,A
test SCBARRAY+11,0xff jnz complete # Immediate message complete
# Pause the sequencer until the driver gets around to handling the command
# complete. This is so that any action that might require carefull timing
# with the completion of this command can occur.
mvi INTSTAT,IMMEDDONE
jmp start
complete:
mov QOUTFIFO,SCBPTR
mvi INTSTAT,CMDCMPLT
test SCBARRAY+11,0xff jz start # Immediate message complete
jmp p_mesgin_done
# If we have a residual count, interrupt and tell the host. Other