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Don't use rmaps; use extent maps instead.

This commit is contained in:
thorpej 2002-09-25 21:25:39 +00:00
parent 2997d64776
commit d3f6afbf48
1 changed files with 35 additions and 15 deletions
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50
sys/arch/vax/vax/machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.127 2002/09/12 18:22:23 ragge Exp $ */
/* $NetBSD: machdep.c,v 1.128 2002/09/25 21:25:39 thorpej Exp $ */
/*
* Copyright (c) 1994, 1998 Ludd, University of Lule}, Sweden.
@ -53,7 +53,7 @@
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/map.h>
#include <sys/extent.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/time.h>
@ -108,8 +108,15 @@ int *symtab_start;
int *symtab_end;
int symtab_nsyms;
#define IOMAPSZ 100
static struct map iomap[IOMAPSZ];
/*
* Extent map to manage I/O register space. We allocate storage for
* 32 regions in the map. iomap_ex_malloc_safe will indicate that it's
* safe to use malloc() to dynamically allocate region descriptors in
* case we run out.
*/
static long iomap_ex_storage[EXTENT_FIXED_STORAGE_SIZE(32) / sizeof(long)];
static struct extent *iomap_ex;
static int iomap_ex_malloc_safe;
struct vm_map *exec_map = NULL;
struct vm_map *mb_map = NULL;
@ -241,6 +248,8 @@ cpu_startup()
if (boothowto & RB_KDB)
Debugger();
#endif
iomap_ex_malloc_safe = 1;
}
u_int32_t dumpmag = 0x8fca0101;
@ -297,11 +306,20 @@ setstatclockrate(hzrate)
void
consinit()
{
extern vaddr_t iospace;
/*
* Init I/O memory resource map. Must be done before cninit()
* Init I/O memory extent map. Must be done before cninit()
* is called; we may want to use iospace in the console routines.
*
* NOTE: We need to reserve the first vax-page of iospace
* for the console routines.
*/
rminit(iomap, IOSPSZ, (long)1, "iomap", IOMAPSZ);
KASSERT(iospace != 0);
iomap_ex = extent_create("iomap", iospace + VAX_NBPG,
iospace + ((IOSPSZ * VAX_NBPG) - 1), M_DEVBUF,
(caddr_t) iomap_ex_storage, sizeof(iomap_ex_storage),
EX_NOCOALESCE|EX_NOWAIT);
#ifdef DEBUG
iospace_inited = 1;
#endif
@ -797,9 +815,8 @@ vax_map_physmem(phys, size)
paddr_t phys;
int size;
{
extern vaddr_t iospace;
vaddr_t addr;
int pageno;
int error;
static int warned = 0;
#ifdef DEBUG
@ -811,13 +828,14 @@ vax_map_physmem(phys, size)
if (addr == 0)
panic("vax_map_physmem: kernel map full");
} else {
pageno = rmalloc(iomap, size);
if (pageno == 0) {
error = extent_alloc(iomap_ex, size * VAX_NBPG, VAX_NBPG, 0,
EX_FAST | EX_NOWAIT |
(iomap_ex_malloc_safe ? EX_MALLOCOK : 0), &addr);
if (error) {
if (warned++ == 0) /* Warn only once */
printf("vax_map_physmem: iomap too small");
return 0;
}
addr = iospace + (pageno * VAX_NBPG);
}
ioaccess(addr, phys, size);
#ifdef PHYSMEMDEBUG
@ -835,17 +853,19 @@ vax_unmap_physmem(addr, size)
vaddr_t addr;
int size;
{
extern vaddr_t iospace;
int pageno = (addr - iospace) / VAX_NBPG;
#ifdef PHYSMEMDEBUG
printf("vax_unmap_physmem: unmapping %d pages at addr %lx\n",
size, addr);
#endif
addr &= ~VAX_PGOFSET;
iounaccess(addr, size);
if (size >= LTOHPN)
uvm_km_free(kernel_map, addr, size * VAX_NBPG);
else
rmfree(iomap, size, pageno);
else if (extent_free(iomap_ex, addr, size * VAX_NBPG,
EX_NOWAIT |
(iomap_ex_malloc_safe ? EX_MALLOCOK : 0)))
printf("vax_unmap_physmem: addr 0x%lx size %dvpg: "
"can't free region\n", addr, size);
}
void *