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The return of dvma_malloc/dvma_free in a different shape.

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This commit is contained in:
pk 1995-12-11 12:32:56 +00:00
parent 528ea56588
commit 2b7034a493
1 changed files with 38 additions and 4 deletions
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42
sys/arch/sparc/sparc/vm_machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: vm_machdep.c,v 1.16 1995/12/07 22:18:54 pk Exp $ */
/* $NetBSD: vm_machdep.c,v 1.17 1995/12/11 12:32:56 pk Exp $ */
/*
* Copyright (c) 1992, 1993
@ -99,6 +99,40 @@ kdvma_mapin(va, len, canwait)
return ((caddr_t)dvma_mapin(kernel_map, (vm_offset_t)va, len, canwait));
}
caddr_t
dvma_malloc(len, kaddr, flags)
int len;
void *kaddr;
int flags;
{
vm_offset_t kva;
vm_offset_t dva;
kva = (vm_offset_t)malloc(len, M_DEVBUF, flags);
if (kva == NULL)
return (NULL);
*(vm_offset_t *)kaddr = kva;
dva = dvma_mapin(kernel_map, kva, len, (flags & M_NOWAIT) ? 0 : 1);
if (dva == NULL) {
free((void *)kva, M_DEVBUF);
return (NULL);
}
return (caddr_t)dva;
}
void
dvma_free(dva, len, kaddr)
caddr_t dva;
int len;
void *kaddr;
{
vm_offset_t kva = *(vm_offset_t *)kaddr;
dvma_mapout((vm_offset_t)dva, kva, len);
free((void *)kva, M_DEVBUF);
}
/*
* Map a range [va, va+len] of wired virtual addresses in the given map
* to a kernel address in DVMA space.
@ -145,9 +179,9 @@ dvma_mapin(map, va, len, canwait)
panic("dvma_mapin: null page frame");
pa = trunc_page(pa);
#ifdef SUN4M
#if defined(SUN4M)
if (cputyp == CPU_SUN4M) {
/* sun4m stuff goes here: iommu_enter(tva, pa);*/
iommu_enter(tva, pa);
} else
#endif
{
@ -186,7 +220,7 @@ dvma_mapout(kva, va, len)
kva -= off;
len = round_page(len + off);
#ifdef SUN4M
#if defined(SUN4M)
if (cputyp == CPU_SUN4M)
iommu_remove(kva, len);
else