[src/trunk]: src/sys/arch/atari/vme Fix a long-standing "leprobe: cannot map ...

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

details:   https://anonhg.NetBSD.org/src/rev/9081b6f03de4
branches:  trunk
changeset: 368145:9081b6f03de4
user:      tsutsui <tsutsui%NetBSD.org@localhost>
date:      Sat Jun 25 22:31:09 2022 +0000

description:
Fix a long-standing "leprobe: cannot map memory-area" error during probe.

PAM and ROTHRON VME LANCE seem to have 64KB RAM, but the register
address region are overwrapped, so we cannot map both of them via
bus_space_map(9) that checks regions using extent(9).
To work around this, just use only 32KB RAM for buffers.
XXX: not sure if anyone tried these VME LANCE variants

diffstat:

 sys/arch/atari/vme/if_le_vme.c |  15 +++++++++------
 1 files changed, 9 insertions(+), 6 deletions(-)

diffs (44 lines):

diff -r 185d6a1f02d7 -r 9081b6f03de4 sys/arch/atari/vme/if_le_vme.c
--- a/sys/arch/atari/vme/if_le_vme.c    Sat Jun 25 18:05:09 2022 +0000
+++ b/sys/arch/atari/vme/if_le_vme.c    Sat Jun 25 22:31:09 2022 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_le_vme.c,v 1.31 2011/07/01 20:34:06 dyoung Exp $    */
+/*     $NetBSD: if_le_vme.c,v 1.32 2022/06/25 22:31:09 tsutsui Exp $   */
 
 /*-
  * Copyright (c) 1998 maximum entropy.  All rights reserved.
@@ -74,7 +74,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_le_vme.c,v 1.31 2011/07/01 20:34:06 dyoung Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_le_vme.c,v 1.32 2022/06/25 22:31:09 tsutsui Exp $");
 
 #include "opt_inet.h"
 
@@ -111,8 +111,11 @@
 #include <atari/vme/if_levar.h>
 
 /*
- * All cards except BVME410 have 64KB RAM. However.... On the Riebl cards the
- * area between the offsets 0xee70-0xeec0 is used to store config data.
+ * All cards except BVME410 have 64KB RAM. However,
+ *  - On the Riebl cards the area between the offsets 0xee70-0xeec0 is used
+ *    to store config data.
+ *  - On PAM and ROTHRON, mem_addr cannot be mapped if reg_addr is already
+ *    mapped because they are overwrapped. Just use 32KB as Linux does.
  */
 struct le_addresses {
        u_long  reg_addr;
@@ -124,9 +127,9 @@
 } lestd[] = {
        { 0xfe00fff0, 0xfe010000, IRQUNK, 16, 64*1024,
                                LE_OLD_RIEBL|LE_NEW_RIEBL }, /* Riebl   */
-       { 0xfecffff0, 0xfecf0000,      5, 16, 64*1024,
+       { 0xfecffff0, 0xfecf0000,      5, 16, 32*1024,
                                LE_PAM },                    /* PAM     */
-       { 0xfecffff0, 0xfecf0000,      5, 16, 64*1024,
+       { 0xfecffff0, 0xfecf0000,      5, 16, 32*1024,
                                LE_ROTHRON },                /* Rhotron */
        { 0xfeff4100, 0xfe000000,      4,  8, VMECF_MEMSIZ_DEFAULT,
                                LE_BVME410 }                 /* BVME410 */