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authorDavid S. Miller <davem@davemloft.net>2005-11-28 14:02:10 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-28 14:35:36 -0800
commit5cd9194a1b0b0fa219c31421ac64dfd38670ed49 (patch)
tree4cd74902103751f10aec30d5a4b0b9af51f42561 /arch/sparc64/mm/generic.c
parent6aab341e0a28aff100a09831c5300a2994b8b986 (diff)
[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/mm/generic.c')
-rw-r--r--arch/sparc64/mm/generic.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/arch/sparc64/mm/generic.c b/arch/sparc64/mm/generic.c
index 8fd4cb1f050a..d9396c1721cd 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;