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Date: Tue, 11 Feb 1997 09:10:40 -0800 (PST)
From: "Justin T. Gibbs" <gibbs>
Message-Id: <199702111710.JAA05009@freefall.freebsd.org>
To: CVS-committers, cvs-all, cvs-sys
Subject: cvs commit:  src/sys/dev/aic7xxx aic7xxx.seq src/sys/i386/scsi aic7xxx.c aic7xxx.h
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gibbs       97/02/11 09:10:39

  Modified:    sys/dev/aic7xxx  aic7xxx.seq
  Log:
  Clear the DFCNTRL register after every busfree.
  
  When setting the HCNT registers, do so in ascending order.
  
  When performing tagged queueing in non-paging mode, also check the
  disconnected bit in the SCB as extra sanity during a reconection.
  
  Make the labels in the DMA routine more sane.
  
  When doing a DMA, if we see the DMADONE condition come true, we can
  simply turn of the DMA enable bits in DFCNTRL without testing the FIFO
  state as HDONE is true when DMADONE is true and this emplies the FIFO is
  empty.
  
  These changes clear up the data overrun error messages and seem to prevent
  the "timed out in data-in phase" problems.
  
  Revision  Changes    Path
  1.59      +26 -23    src/sys/dev/aic7xxx/aic7xxx.seq

  Modified:    sys/i386/scsi  aic7xxx.c aic7xxx.h
  Log:
  Fix a bug in the reporting of residuals.  The code was relying on the SG_COUNT
  filed in the hardware SCB not changing during the course of a transaction.
  Since the sequencer now DMAs the hardware SCB back up to the host when it
  detects a residual, this is no longer the case.  I added a field to the
  "software" scb to mirror this information and it is now used for doing the
  residual calculation.
  
  Revision  Changes    Path
  1.97      +21 -5     src/sys/i386/scsi/aic7xxx.c
  1.37      +1 -0      src/sys/i386/scsi/aic7xxx.h