oops, 24-bit addressing gets 15Mb, not 8

SCCS-vsn: sys/tahoe/vba/vbavar.h 7.3

diff --git a/usr/src/sys/tahoe/vba/vbavar.h b/usr/src/sys/tahoe/vba/vbavar.h
index 4d30568..22170c4 100644 (file)
--- a/usr/src/sys/tahoe/vba/vbavar.h
+++ b/usr/src/sys/tahoe/vba/vbavar.h
@@ -14,7 +14,7 @@
  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *
  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *

- *     @(#)vbavar.h    7.2 (Berkeley) %G%
+ *     @(#)vbavar.h    7.3 (Berkeley) %G%

  */
 
 /*
  */
 
 /*


@@ -143,10 +143,11 @@ struct vb_buf {
 #define        VB_SCATTER      0x04            /* device does scatter-gather */
 
 /*
 #define        VB_SCATTER      0x04            /* device does scatter-gather */
 
 /*

- * hardware addressing limits
+ * hardware memory-addressing limits: highest physical address
+ * that each address length can use for main memory access.

  */
 #define        VB_MAXADDR20    0x000fffff      /* highest addr for 20-bit */
  */
 #define        VB_MAXADDR20    0x000fffff      /* highest addr for 20-bit */

-#define        VB_MAXADDR24    0x007fffff      /* highest addr for 23/24-bit */
+#define        VB_MAXADDR24    0x00efffff      /* highest addr for 23/24-bit */

 #define        VB_MAXADDR32    0x3effffff      /* highest addr for 32-bit */
 
 /*
 #define        VB_MAXADDR32    0x3effffff      /* highest addr for 32-bit */
 
 /*