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| author | David S. Miller <davem@davemloft.net> | 2005-11-28 14:02:10 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-28 14:35:36 -0800 |
| commit | 5cd9194a1b0b0fa219c31421ac64dfd38670ed49 (patch) | |
| tree | 4cd74902103751f10aec30d5a4b0b9af51f42561 /arch/sparc64 | |
| parent | 6aab341e0a28aff100a09831c5300a2994b8b986 (diff) | |
| download | op-kernel-dev-5cd9194a1b0b0fa219c31421ac64dfd38670ed49.zip op-kernel-dev-5cd9194a1b0b0fa219c31421ac64dfd38670ed49.tar.gz | |
[PATCH] sparc: convert IO remapping to VM_PFNMAP
Here are the Sparc bits.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/sparc64')
| -rw-r--r-- | arch/sparc64/mm/generic.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/arch/sparc64/mm/generic.c b/arch/sparc64/mm/generic.c index 8fd4cb1..d9396c1 100644 --- a/arch/sparc64/mm/generic.c +++ b/arch/sparc64/mm/generic.c @@ -15,6 +15,15 @@ #include <asm/page.h> #include <asm/tlbflush.h> +static inline pte_t mk_pte_io(unsigned long page, pgprot_t prot, int space) +{ + pte_t pte; + pte_val(pte) = (((page) | pgprot_val(prot) | _PAGE_E) & + ~(unsigned long)_PAGE_CACHE); + pte_val(pte) |= (((unsigned long)space) << 32); + return pte; +} + /* Remap IO memory, the same way as remap_pfn_range(), but use * the obio memory space. * @@ -126,9 +135,13 @@ int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from, struct mm_struct *mm = vma->vm_mm; int space = GET_IOSPACE(pfn); unsigned long offset = GET_PFN(pfn) << PAGE_SHIFT; + unsigned long phys_base; + + phys_base = offset | (((unsigned long) space) << 32UL); /* See comment in mm/memory.c remap_pfn_range */ - vma->vm_flags |= VM_IO | VM_RESERVED | VM_UNPAGED; + vma->vm_flags |= VM_IO | VM_RESERVED | VM_PFNMAP; + vma->vm_pgoff = phys_base >> PAGE_SHIFT; prot = __pgprot(pg_iobits); offset -= from; |
