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Date: Thu, 26 Oct 1995 16:59:01 -0700
From: "Justin T. Gibbs" <gibbs>
Message-Id: <199510262359.QAA07328@freefall.freebsd.org>
To: CVS-commiters, cvs-sys
Subject: cvs commit: src/sys/pci aic7870.c
Sender: owner-cvs-sys@FreeBSD.org
Precedence: bulk

gibbs       95/10/26 16:59:00

  Modified:    sys/dev/aic7xxx  aic7xxx.seq
  Log:
  Set SCSIGO generically before we determine the phase instead of doing it
  in each phase routine.  Saves a few instructions.
  
  Be more careful in how we deal with SXFRCTL0.  Or in the control bits of
  interest instead of using mvi.  The kernel driver will set the ULTRAEN
  bit of SXFRCTL0 if we are using Ultra (20MHz) mode and we don't want to
  clobber it.
  
  In sdtr_to_rate divide by two if we are in ultra mode to get the correct
  setting since its a 20MHz instead of 10MHz scale.

  Modified:    sys/i386/scsi  aic7xxx.c aic7xxx.h
  Log:
  Properly deal with the Ultra series of adapters.  We should now understand
  the new seeprom format and negotiate up to 20MHz sync if set in SCSI-Select.
  
  Reduce the complexity of the timeout code by running it at splhigh().  Fix
  a bug that caused rescheduled timeouts at 0 clock ticks in the future causing
  an infinite loop.
  
  Obtained from: Timeout bug noticed by David Greenman and wcarchive.

  Modified:    sys/pci   aic7870.c
  Log:
  Recognize the aic7880 and 3940 Ultra.
  
  If RAMENB is set in devconfig, walk the external SCBs.  Some Intel Xpress
  motherboards set this bit.
  
  For external SCBs for the 3940.  It doesn't set RAMPS or RAMENB, but does
  have the ram.