X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fsparc64%2Fmm%2Fgeneric.c;h=8cb06205d265347e62f3517795cda2173d45632e;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=6b31f6117a950ac400d3c78c68f759754c434b54;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git

diff --git a/arch/sparc64/mm/generic.c b/arch/sparc64/mm/generic.c
index 6b31f6117..8cb06205d 100644
--- a/arch/sparc64/mm/generic.c
+++ b/arch/sparc64/mm/generic.c
@@ -39,24 +39,29 @@ static inline void io_remap_pte_range(struct mm_struct *mm, pte_t * pte,
 		pte_t entry;
 		unsigned long curend = address + PAGE_SIZE;
 		
-		entry = mk_pte_io(offset, prot, space);
+		entry = mk_pte_io(offset, prot, space, PAGE_SIZE);
 		if (!(address & 0xffff)) {
-			if (!(address & 0x3fffff) && !(offset & 0x3ffffe) && end >= address + 0x400000) {
-				entry = mk_pte_io(offset,
-						  __pgprot(pgprot_val (prot) | _PAGE_SZ4MB),
-						  space);
+			if (PAGE_SIZE < (4 * 1024 * 1024) &&
+			    !(address & 0x3fffff) &&
+			    !(offset & 0x3ffffe) &&
+			    end >= address + 0x400000) {
+				entry = mk_pte_io(offset, prot, space,
+						  4 * 1024 * 1024);
 				curend = address + 0x400000;
 				offset += 0x400000;
-			} else if (!(address & 0x7ffff) && !(offset & 0x7fffe) && end >= address + 0x80000) {
-				entry = mk_pte_io(offset,
-						  __pgprot(pgprot_val (prot) | _PAGE_SZ512K),
-						  space);
+			} else if (PAGE_SIZE < (512 * 1024) &&
+				   !(address & 0x7ffff) &&
+				   !(offset & 0x7fffe) &&
+				   end >= address + 0x80000) {
+				entry = mk_pte_io(offset, prot, space,
+						  512 * 1024 * 1024);
 				curend = address + 0x80000;
 				offset += 0x80000;
-			} else if (!(offset & 0xfffe) && end >= address + 0x10000) {
-				entry = mk_pte_io(offset,
-						  __pgprot(pgprot_val (prot) | _PAGE_SZ64K),
-						  space);
+			} else if (PAGE_SIZE < (64 * 1024) &&
+				   !(offset & 0xfffe) &&
+				   end >= address + 0x10000) {
+				entry = mk_pte_io(offset, prot, space,
+						  64 * 1024);
 				curend = address + 0x10000;
 				offset += 0x10000;
 			} else
@@ -68,6 +73,7 @@ static inline void io_remap_pte_range(struct mm_struct *mm, pte_t * pte,
 			BUG_ON(!pte_none(*pte));
 			set_pte_at(mm, address, pte, entry);
 			address += PAGE_SIZE;
+			pte_val(entry) += PAGE_SIZE;
 			pte++;
 		} while (address < curend);
 	} while (address < end);
@@ -116,37 +122,6 @@ static inline int io_remap_pud_range(struct mm_struct *mm, pud_t * pud, unsigned
 	return 0;
 }
 
-int io_remap_page_range(struct vm_area_struct *vma, unsigned long from, unsigned long offset, unsigned long size, pgprot_t prot, int space)
-{
-	int error = 0;
-	pgd_t * dir;
-	unsigned long beg = from;
-	unsigned long end = from + size;
-	struct mm_struct *mm = vma->vm_mm;
-
-	prot = __pgprot(pg_iobits);
-	offset -= from;
-	dir = pgd_offset(mm, from);
-	flush_cache_range(vma, beg, end);
-
-	spin_lock(&mm->page_table_lock);
-	while (from < end) {
-		pud_t *pud = pud_alloc(mm, dir, from);
-		error = -ENOMEM;
-		if (!pud)
-			break;
-		error = io_remap_pud_range(mm, pud, from, end - from, offset + from, prot, space);
-		if (error)
-			break;
-		from = (from + PGDIR_SIZE) & PGDIR_MASK;
-		dir++;
-	}
-	flush_tlb_range(vma, beg, end);
-	spin_unlock(&mm->page_table_lock);
-
-	return error;
-}
-
 int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
 		unsigned long pfn, unsigned long size, pgprot_t prot)
 {
@@ -157,15 +132,20 @@ 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_PFNMAP;
+	vma->vm_pgoff = phys_base >> PAGE_SHIFT;
 
-	prot = __pgprot(pg_iobits);
 	offset -= from;
 	dir = pgd_offset(mm, from);
 	flush_cache_range(vma, beg, end);
 
-	spin_lock(&mm->page_table_lock);
 	while (from < end) {
-		pud_t *pud = pud_alloc(current->mm, dir, from);
+		pud_t *pud = pud_alloc(mm, dir, from);
 		error = -ENOMEM;
 		if (!pud)
 			break;
@@ -175,8 +155,7 @@ int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
 		from = (from + PGDIR_SIZE) & PGDIR_MASK;
 		dir++;
 	}
-	flush_tlb_range(vma, beg, end);
-	spin_unlock(&mm->page_table_lock);
 
+	flush_tlb_range(vma, beg, end);
 	return error;
 }