[src/trunk]: src/sys/arch/mips/mips Clone vmapbuf() and vunmapbuf() from the ...

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

details:   https://anonhg.NetBSD.org/src/rev/58737c5a6eef
branches:  trunk
changeset: 473312:58737c5a6eef
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Fri May 28 22:59:40 1999 +0000

description:
Clone vmapbuf() and vunmapbuf() from the Alpha port.

diffstat:

 sys/arch/mips/mips/vm_machdep.c |  41 +++++++++++++++++------------------------
 1 files changed, 17 insertions(+), 24 deletions(-)

diffs (77 lines):

diff -r 72dc65b785c5 -r 58737c5a6eef sys/arch/mips/mips/vm_machdep.c
--- a/sys/arch/mips/mips/vm_machdep.c   Fri May 28 22:54:12 1999 +0000
+++ b/sys/arch/mips/mips/vm_machdep.c   Fri May 28 22:59:40 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vm_machdep.c,v 1.40 1999/05/27 01:56:34 nisimura Exp $ */
+/*     $NetBSD: vm_machdep.c,v 1.41 1999/05/28 22:59:40 thorpej Exp $  */
 
 /*
  * Copyright (c) 1988 University of Utah.
@@ -43,7 +43,7 @@
  */
 
 #include <sys/cdefs.h>                 /* RCS ID & Copyright macro defns */
-__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.40 1999/05/27 01:56:34 nisimura Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.41 1999/05/28 22:59:40 thorpej Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -308,34 +308,28 @@
        struct buf *bp;
        vsize_t len;
 {
-       vaddr_t faddr, taddr;
-       vsize_t off;
-       pt_entry_t *fpte, *tpte;
-       pt_entry_t *pmap_pte __P((pmap_t, vaddr_t));
-       u_int pt_mask;
+       vaddr_t faddr, taddr, off;
+       paddr_t pa;
+       struct proc *p;
 
        if ((bp->b_flags & B_PHYS) == 0)
                panic("vmapbuf");
+       p = bp->b_proc;
        faddr = trunc_page(bp->b_saveaddr = bp->b_data);
        off = (vaddr_t)bp->b_data - faddr;
        len = round_page(off + len);
        taddr = uvm_km_valloc_wait(phys_map, len);
        bp->b_data = (caddr_t)(taddr + off);
-       /*
-        * The region is locked, so we expect that pmap_pte() will return
-        * non-NULL.
-        */
-       fpte = pmap_pte(vm_map_pmap(&bp->b_proc->p_vmspace->vm_map), faddr);
-       tpte = pmap_pte(vm_map_pmap(phys_map), taddr);
-       pt_mask = (CPUISMIPS3) ? (MIPS3_PG_V|MIPS3_PG_G|MIPS3_PG_D) :
-                                (MIPS1_PG_V|MIPS1_PG_G|MIPS1_PG_D);
-       do {
-               /* XXX should mark them PG_WIRED? */
-               tpte->pt_entry = fpte->pt_entry | pt_mask;
-               MachTLBUpdate(taddr, tpte->pt_entry);
-               tpte++, fpte++, taddr += PAGE_SIZE;
-               len -= PAGE_SIZE;
-       } while (len);
+       len = atop(len);
+       while (len--) {
+               pa = pmap_extract(vm_map_pmap(&p->p_vmspace->vm_map), faddr);
+               if (pa == 0)
+                       panic("vmapbuf: null page frame");
+               pmap_enter(vm_map_pmap(phys_map), taddr, trunc_page(pa),
+                   VM_PROT_READ|VM_PROT_WRITE, TRUE, 0);
+               faddr += PAGE_SIZE;
+               taddr += PAGE_SIZE;
+       }
 }
 
 /*
@@ -346,8 +340,7 @@
        struct buf *bp;
        vsize_t len;
 {
-       vaddr_t addr;
-       vsize_t off;
+       vaddr_t addr, off;
 
        if ((bp->b_flags & B_PHYS) == 0)
                panic("vunmapbuf");