[src/trunk]: src/sys/arch/i386/conf i386/LEGACY: Enable ATA_DOWNGRADE_MODE.

[riastradh <riastradh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/ab58bb724ce3
branches:  trunk
changeset: 377569:ab58bb724ce3
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Mon Jul 17 21:12:29 2023 +0000

description:
i386/LEGACY: Enable ATA_DOWNGRADE_MODE.

PR kern/57362

diffstat:

 sys/arch/i386/conf/LEGACY |  5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diffs (18 lines):

diff -r 02eb0e586434 -r ab58bb724ce3 sys/arch/i386/conf/LEGACY
--- a/sys/arch/i386/conf/LEGACY Mon Jul 17 21:12:19 2023 +0000
+++ b/sys/arch/i386/conf/LEGACY Mon Jul 17 21:12:29 2023 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: LEGACY,v 1.1 2015/03/07 07:28:37 mrg Exp $
+#      $NetBSD: LEGACY,v 1.2 2023/07/17 21:12:29 riastradh Exp $
 
 # LEGACY kernel -- includes vga@isa and pcdisplay@isa for pre-PCI
 # systems, due to significant pain making them fail to attach when
@@ -10,5 +10,8 @@ vga0          at isa?
 pcdisplay0     at isa?                 # CGA, MDA, EGA, HGA
 wsdisplay*     at pcdisplay? console ?
 
+# Enable DMA -> PIO downgrade after a certain number of DMA errors.
+options        ATA_DOWNGRADE_MODE
+
 # XXX we could turn off all sorts of other modern features in this
 # configuration, but that is left for future work.