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authordfr <dfr@FreeBSD.org>2000-05-14 13:47:57 +0000
committerdfr <dfr@FreeBSD.org>2000-05-14 13:47:57 +0000
commit503e2bb45ec708ded388e6d0515415adea9c2a1e (patch)
tree03d0d17068c3220d01e03b0d2893c70b07a8ecd3 /sys/isa/isareg.h
parent1a749c1007b2262af1843c6417d514e940e6387e (diff)
downloadFreeBSD-src-503e2bb45ec708ded388e6d0515415adea9c2a1e.zip
FreeBSD-src-503e2bb45ec708ded388e6d0515415adea9c2a1e.tar.gz
Port ppc driver to alpha.
Submitted by: Andrew M. Miklic <miklic@ibm.net>
Diffstat (limited to 'sys/isa/isareg.h')
-rw-r--r--sys/isa/isareg.h10
1 files changed, 9 insertions, 1 deletions
diff --git a/sys/isa/isareg.h b/sys/isa/isareg.h
index a2162cd..532da43 100644
--- a/sys/isa/isareg.h
+++ b/sys/isa/isareg.h
@@ -157,7 +157,15 @@
#define IO_GSCSIZE 8 /* GeniScan GS-4500G hand scanner */
#define IO_ICUSIZE 16 /* 8259A interrupt controllers */
#define IO_KBDSIZE 16 /* 8042 Keyboard controllers */
-#define IO_LPTSIZE 8 /* LPT controllers, some use only 4 */
+
+/* The following line was changed to support more architectures (simpler
+ chipsets (like those for Alpha) only use 4, but more complex controllers
+ (usually modern i386's) can use an additional 4; the probe to see if
+ the additional 4 can be used by the specific chipset is now done in the ppc
+ code by ppc_probe()... */
+
+#define IO_LPTSIZE 4 /* LPT controllers, Alpha only uses 4 */
+
#define IO_MDASIZE 12 /* Monochrome display controllers */
#define IO_NPXSIZE 16 /* 80387/80487 NPX registers */
#define IO_PMPSIZE 2 /* 82347 power management peripheral */
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