[src/trunk]: src/sys/arch/powerpc Retire tlbpid_t (u_short):

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

details:   https://anonhg.NetBSD.org/src/rev/3778dd308460
branches:  trunk
changeset: 745548:3778dd308460
user:      rin <rin%NetBSD.org@localhost>
date:      Thu Mar 05 02:14:52 2020 +0000

description:
Retire tlbpid_t (u_short):

- PID (ctx, ASID) is 8-bit length, not half word.
- For struct pmap, no need to use integer types smaller than word as
  pm_ctx because of alignment.
- For ppc4xx_tlb_enter(), we need word-length storage for pid (and msr).

XXX
Better to rewrite pmap module with more suggestive integer types rather
than char, int, long, and so on.

diffstat:

 sys/arch/powerpc/ibm4xx/pmap.c         |  7 +++----
 sys/arch/powerpc/include/ibm4xx/pmap.h |  4 ++--
 sys/arch/powerpc/include/ibm4xx/tlb.h  |  3 +--
 3 files changed, 6 insertions(+), 8 deletions(-)

diffs (63 lines):

diff -r 41c77dd06677 -r 3778dd308460 sys/arch/powerpc/ibm4xx/pmap.c
--- a/sys/arch/powerpc/ibm4xx/pmap.c    Thu Mar 05 02:02:08 2020 +0000
+++ b/sys/arch/powerpc/ibm4xx/pmap.c    Thu Mar 05 02:14:52 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pmap.c,v 1.83 2020/03/05 01:35:00 rin Exp $    */
+/*     $NetBSD: pmap.c,v 1.84 2020/03/05 02:14:52 rin Exp $    */
 
 /*
  * Copyright 2001 Wasabi Systems, Inc.
@@ -67,7 +67,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.83 2020/03/05 01:35:00 rin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.84 2020/03/05 02:14:52 rin Exp $");
 
 #include <sys/param.h>
 #include <sys/cpu.h>
@@ -1293,8 +1293,7 @@
 ppc4xx_tlb_enter(int ctx, vaddr_t va, u_int pte)
 {
        u_long th, tl, idx;
-       tlbpid_t pid;
-       u_short msr;
+       int msr, pid;
        paddr_t pa;
        int sz;
 
diff -r 41c77dd06677 -r 3778dd308460 sys/arch/powerpc/include/ibm4xx/pmap.h
--- a/sys/arch/powerpc/include/ibm4xx/pmap.h    Thu Mar 05 02:02:08 2020 +0000
+++ b/sys/arch/powerpc/include/ibm4xx/pmap.h    Thu Mar 05 02:14:52 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pmap.h,v 1.19 2019/07/17 08:39:03 skrll Exp $  */
+/*     $NetBSD: pmap.h,v 1.20 2020/03/05 02:14:53 rin Exp $    */
 
 /*
  * Copyright 2001 Wasabi Systems, Inc.
@@ -143,7 +143,7 @@
  * Pmap stuff
  */
 struct pmap {
-       volatile tlbpid_t pm_ctx;       /* PID to identify PMAP's entries in TLB */
+       volatile int pm_ctx;    /* PID to identify PMAP's entries in TLB */
        int pm_refs;                    /* ref count */
        struct pmap_statistics pm_stats; /* pmap statistics */
        volatile u_int *pm_ptbl[STSZ];  /* Array of 64 pointers to page tables. */
diff -r 41c77dd06677 -r 3778dd308460 sys/arch/powerpc/include/ibm4xx/tlb.h
--- a/sys/arch/powerpc/include/ibm4xx/tlb.h     Thu Mar 05 02:02:08 2020 +0000
+++ b/sys/arch/powerpc/include/ibm4xx/tlb.h     Thu Mar 05 02:14:52 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: tlb.h,v 1.5 2018/04/19 21:50:07 christos Exp $ */
+/*     $NetBSD: tlb.h,v 1.6 2020/03/05 02:14:53 rin Exp $      */
 
 /*
  * Copyright 2001 Wasabi Systems, Inc.
@@ -89,7 +89,6 @@
 
 #ifndef _LOCORE
 
-typedef u_short tlbpid_t;
 typedef struct tlb_s {
        u_int tlb_hi;
        u_int tlb_lo;