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Add two new aic7xxx driver options:

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AHC_FORCE_PIO - This forces the driver to use PIO even on systems that
	say they have memory mapped the controller's registers.  This
	seems to fix Ken Lam's problems.  I've also placed this option
	in the GENERIC kernel file so that we are guaranteed to install
	even on these flakey machines.

AHC_SHARE_SCBS - This option attempts to share the external SCB SRAM on
	the 398X controllers allowing a totoll of 255 non-paged SCBs.
	This doesn't work quite yet, so this option is mostly here to
	help 398X owners to experiment and give me feedback until this
	works properly.
This commit is contained in:
Justin T. Gibbs 1996-10-28 06:05:58 +00:00
parent 85772b6529
commit 1affda38c1
4 changed files with 14 additions and 4 deletions
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5
sys/amd64/conf/GENERIC
View File

@ -11,7 +11,7 @@
# device lines is present in the ./LINT configuration file. If you are
# in doubt as to the purpose or necessity of a line, check first in LINT.
#
# $Id: GENERIC,v 1.75 1996/08/27 16:25:53 wosch Exp $
# $Id: GENERIC,v 1.76 1996/09/11 19:53:28 phk Exp $
machine "i386"
cpu "I386_CPU"
@ -64,6 +64,9 @@ device wcd0 #IDE CD-ROM
controller ncr0
controller ahb0
controller ahc0
options "AHC_FORCE_PIO" # Some motherboards choke on MemI/O,
# so use PIO in the ahc driver in the
# generic kernel.
controller bt0 at isa? port "IO_BT0" bio irq ? vector bt_isa_intr
controller uha0 at isa? port "IO_UHA0" bio irq ? drq 5 vector uhaintr

4
sys/conf/options.i386
View File

@ -1,4 +1,4 @@
# $Id: options.i386,v 1.24 1996/10/17 19:31:47 bde Exp $
# $Id: options.i386,v 1.25 1996/10/23 07:29:35 pst Exp $
BOUNCEPAGES opt_bounce.h
USER_LDT
MATH_EMULATE opt_math_emulate.h
@ -29,6 +29,8 @@ XSERVER opt_pcvt.h
AHC_TAGENABLE opt_aic7xxx.h
AHC_SCBPAGING_ENABLE opt_aic7xxx.h
AHC_FORCE_PIO opt_aic7xxx.h
AHC_SHARE_SCBS opt_aic7xxx.h
CLK_CALIBRATION_LOOP opt_clock.h
CLK_USE_I8254_CALIBRATION opt_clock.h

5
sys/i386/conf/GENERIC
View File

@ -11,7 +11,7 @@
# device lines is present in the ./LINT configuration file. If you are
# in doubt as to the purpose or necessity of a line, check first in LINT.
#
# $Id: GENERIC,v 1.75 1996/08/27 16:25:53 wosch Exp $
# $Id: GENERIC,v 1.76 1996/09/11 19:53:28 phk Exp $
machine "i386"
cpu "I386_CPU"
@ -64,6 +64,9 @@ device wcd0 #IDE CD-ROM
controller ncr0
controller ahb0
controller ahc0
options "AHC_FORCE_PIO" # Some motherboards choke on MemI/O,
# so use PIO in the ahc driver in the
# generic kernel.
controller bt0 at isa? port "IO_BT0" bio irq ? vector bt_isa_intr
controller uha0 at isa? port "IO_UHA0" bio irq ? drq 5 vector uhaintr

4
sys/i386/conf/options.i386
View File

@ -1,4 +1,4 @@
# $Id: options.i386,v 1.24 1996/10/17 19:31:47 bde Exp $
# $Id: options.i386,v 1.25 1996/10/23 07:29:35 pst Exp $
BOUNCEPAGES opt_bounce.h
USER_LDT
MATH_EMULATE opt_math_emulate.h
@ -29,6 +29,8 @@ XSERVER opt_pcvt.h
AHC_TAGENABLE opt_aic7xxx.h
AHC_SCBPAGING_ENABLE opt_aic7xxx.h
AHC_FORCE_PIO opt_aic7xxx.h
AHC_SHARE_SCBS opt_aic7xxx.h
CLK_CALIBRATION_LOOP opt_clock.h
CLK_USE_I8254_CALIBRATION opt_clock.h