[src/trunk]: src/sys/arch/mac68k/mac68k Make mac68k_set_io_offsets() a little...

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

details:   https://anonhg.NetBSD.org/src/rev/4dac89bb1eaa
branches:  trunk
changeset: 982840:4dac89bb1eaa
user:      rin <rin%NetBSD.org@localhost>
date:      Wed Apr 28 02:00:58 2021 +0000

description:
Make mac68k_set_io_offsets() a little bit cleaner:

- Via1Base is always ``base'' for all supported models.
- Set sccA and SCSIBase for each model of MACH_CLASSQ class.
- Some style fixes.

No functional changes intended.

diffstat:

 sys/arch/mac68k/mac68k/machdep.c |  28 +++++++++++-----------------
 1 files changed, 11 insertions(+), 17 deletions(-)

diffs (98 lines):

diff -r 67139bc8ca37 -r 4dac89bb1eaa sys/arch/mac68k/mac68k/machdep.c
--- a/sys/arch/mac68k/mac68k/machdep.c  Wed Apr 28 00:49:22 2021 +0000
+++ b/sys/arch/mac68k/mac68k/machdep.c  Wed Apr 28 02:00:58 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: machdep.c,v 1.360 2021/02/26 10:54:12 rin Exp $        */
+/*     $NetBSD: machdep.c,v 1.361 2021/04/28 02:00:58 rin Exp $        */
 
 /*
  * Copyright (c) 1988 University of Utah.
@@ -74,7 +74,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.360 2021/02/26 10:54:12 rin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.361 2021/04/28 02:00:58 rin Exp $");
 
 #include "opt_adb.h"
 #include "opt_compat_netbsd.h"
@@ -2110,24 +2110,24 @@
 mac68k_set_io_offsets(vaddr_t base)
 {
 
+       Via1Base = (volatile u_char *)base;
+       Via2Base = Via1Base + 0x2000 * VIA2;
        switch (current_mac_model->class) {
        case MACH_CLASSQ:
-               Via1Base = (volatile u_char *)base;
-
-               /* The following two may be overridden. */
-               sccA = (volatile u_char *)base + 0xc000;
-               SCSIBase = base + 0xf000;
-
                switch (current_mac_model->machineid) {
                case MACH_MACQ900:
                case MACH_MACQ950:
+                       sccA = (volatile u_char *)base + 0xc020;
+                       SCSIBase = base + 0xf000;
                        mac68k_machine.scsi96_2 = 1;
-                       sccA = (volatile u_char *)base + 0xc020;
                        iop_init(0);    /* For console */
                        break;
                case MACH_MACQ700:
+                       sccA = (volatile u_char *)base + 0xc000;
+                       SCSIBase = base + 0xf000;
                        break;
                default:
+                       sccA = (volatile u_char *)base + 0xc000;
                        SCSIBase = base + 0x10000;
                        break;
                }
@@ -2138,7 +2138,6 @@
                 * machines.  This seems to be common on many of the
                 * Quadra-type machines.
                 */
-               Via1Base = (volatile u_char *)base;
                sccA = (volatile u_char *)base + 0xc020;
                SCSIBase = base + 0x10000;
                break;
@@ -2147,12 +2146,10 @@
                 * Here's a queer bird... it seems to be a cross between
                 * the two different Quadra classes.
                 */
-               Via1Base = (volatile u_char *) base;
-               sccA = (volatile u_char *) base + 0xc020;
+               sccA = (volatile u_char *)base + 0xc020;
                SCSIBase = base;
                break;
        case MACH_CLASSAV:
-               Via1Base = (volatile u_char *)base;
                sccA = (volatile u_char *)base + 0x4000;
                SCSIBase = base + 0x18000;
                PSCBase = (volatile u_char *)base + 0x31000;
@@ -2164,8 +2161,7 @@
        case MACH_CLASSIIsi:
        case MACH_CLASSIIvx:
        case MACH_CLASSLC:
-               Via1Base = (volatile u_char *)base;
-               sccA = (volatile u_char *) base + 0x4000;
+               sccA = (volatile u_char *)base + 0x4000;
                SCSIBase = base;
                break;
        case MACH_CLASSIIfx:
@@ -2174,7 +2170,6 @@
                 * the serial port in `compatible' mode (set in
                 * the Serial Switch control panel before booting).
                 */
-               Via1Base = (volatile u_char *)base;
                sccA = (volatile u_char *)base + 0x4020;
                SCSIBase = base;
                iop_init(0);    /* For console */
@@ -2185,7 +2180,6 @@
                    current_mac_model->class);
                break;
        }
-       Via2Base = Via1Base + 0x2000 * VIA2;
 }
 
 #if GRAYBARS