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pmap_kremove can no longer be used to remove the magic device mappings

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installed with pmap_kenter_flags, since the physical addresses may not
have an associated vm_page.  Add a function to do this.

Tested by:	Tomi Vainio <Tomi.Vainio@Sun.COM>
This commit is contained in:
Jake Burkholder 2002-06-25 15:13:09 +00:00
parent 7afbc0985e
commit 218fd301cd
3 changed files with 16 additions and 1 deletions
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1
sys/sparc64/include/pmap.h
View File

@ -76,6 +76,7 @@ void pmap_bootstrap(vm_offset_t ekva);
void pmap_context_rollover(void);
vm_offset_t pmap_kextract(vm_offset_t va);
void pmap_kenter_flags(vm_offset_t va, vm_offset_t pa, u_long flags);
void pmap_kremove_flags(vm_offset_t va);
void pmap_qenter_flags(vm_offset_t va, vm_page_t *m, int count, u_long fl);
int pmap_cache_enter(vm_page_t m, vm_offset_t va);

2
sys/sparc64/sparc64/bus_machdep.c
View File

@ -580,7 +580,7 @@ sparc64_bus_mem_unmap(void *bh, bus_size_t size)
sva = trunc_page((vm_offset_t)bh);
endva = sva + round_page(size);
for (va = sva; va < endva; va += PAGE_SIZE)
pmap_kremove(va);
pmap_kremove_flags(va);
tlb_range_demap(kernel_pmap, sva, sva + size - 1);
kmem_free(kernel_map, sva, size);
return (0);

14
sys/sparc64/sparc64/pmap.c
View File

@ -717,6 +717,20 @@ pmap_kremove(vm_offset_t va)
TTE_ZERO(tp);
}
/*
* Inverse of pmap_kenter_flags, used by bus_space_unmap().
*/
void
pmap_kremove_flags(vm_offset_t va)
{
struct tte *tp;
tp = tsb_kvtotte(va);
CTR3(KTR_PMAP, "pmap_kremove: va=%#lx tp=%p data=%#lx", va, tp,
tp->tte_data);
TTE_ZERO(tp);
}
/*
* Map a range of physical addresses into kernel virtual address space.
*