[PATCH] sparc: convert IO remapping to VM_PFNMAP
Here are the Sparc bits. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
parent
6aab341e0a
commit
5cd9194a1b
|
@ -32,9 +32,7 @@ static inline void io_remap_pte_range(struct mm_struct *mm, pte_t * pte, unsigne
|
|||
if (end > PMD_SIZE)
|
||||
end = PMD_SIZE;
|
||||
do {
|
||||
pte_t oldpage = *pte;
|
||||
pte_clear(mm, address, pte);
|
||||
set_pte(pte, mk_pte_io(offset, prot, space));
|
||||
set_pte_at(mm, address, pte, mk_pte_io(offset, prot, space));
|
||||
address += PAGE_SIZE;
|
||||
offset += PAGE_SIZE;
|
||||
pte++;
|
||||
|
@ -63,7 +61,7 @@ static inline int io_remap_pmd_range(struct mm_struct *mm, pmd_t * pmd, unsigned
|
|||
}
|
||||
|
||||
int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
|
||||
unsigned long pfn, unsigned long size, pgprot_t prot)
|
||||
unsigned long pfn, unsigned long size, pgprot_t prot)
|
||||
{
|
||||
int error = 0;
|
||||
pgd_t * dir;
|
||||
|
@ -74,7 +72,9 @@ int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
|
|||
unsigned long offset = GET_PFN(pfn) << PAGE_SHIFT;
|
||||
|
||||
/* 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 = (offset >> PAGE_SHIFT) |
|
||||
((unsigned long)space << 28UL);
|
||||
|
||||
prot = __pgprot(pg_iobits);
|
||||
offset -= from;
|
||||
|
|
|
@ -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;
|
||||
|
|
|
@ -348,16 +348,6 @@ extern unsigned long find_ecache_flush_span(unsigned long size);
|
|||
struct vm_area_struct;
|
||||
extern void update_mmu_cache(struct vm_area_struct *, unsigned long, pte_t);
|
||||
|
||||
/* Make a non-present pseudo-TTE. */
|
||||
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;
|
||||
}
|
||||
|
||||
/* Encode and de-code a swap entry */
|
||||
#define __swp_type(entry) (((entry).val >> PAGE_SHIFT) & 0xffUL)
|
||||
#define __swp_offset(entry) ((entry).val >> (PAGE_SHIFT + 8UL))
|
||||
|
|
Loading…
Reference in a new issue