X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fcris%2Fmm%2Fioremap.c;h=1780df3ed9e590997529aadcbd9d3a1c7f134abd;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=6b9130bfb6c1b4d1070e55b862a6de7a73032066;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git

diff --git a/arch/cris/mm/ioremap.c b/arch/cris/mm/ioremap.c
index 6b9130bfb..1780df3ed 100644
--- a/arch/cris/mm/ioremap.c
+++ b/arch/cris/mm/ioremap.c
@@ -14,9 +14,10 @@
 #include <asm/pgalloc.h>
 #include <asm/cacheflush.h>
 #include <asm/tlbflush.h>
+#include <asm/arch/memmap.h>
 
-extern inline void remap_area_pte(pte_t * pte, unsigned long address, unsigned long size,
-	unsigned long phys_addr, unsigned long flags)
+static inline void remap_area_pte(pte_t * pte, unsigned long address, unsigned long size,
+	unsigned long phys_addr, pgprot_t prot)
 {
 	unsigned long end;
 
@@ -31,9 +32,7 @@ extern inline void remap_area_pte(pte_t * pte, unsigned long address, unsigned l
 			printk("remap_area_pte: page already exists\n");
 			BUG();
 		}
-		set_pte(pte, mk_pte_phys(phys_addr, __pgprot(_PAGE_PRESENT | __READABLE | 
-							     __WRITEABLE | _PAGE_GLOBAL |
-							     _PAGE_KERNEL | flags)));
+		set_pte(pte, mk_pte_phys(phys_addr, prot));
 		address += PAGE_SIZE;
 		phys_addr += PAGE_SIZE;
 		pte++;
@@ -41,7 +40,7 @@ extern inline void remap_area_pte(pte_t * pte, unsigned long address, unsigned l
 }
 
 static inline int remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned long size,
-	unsigned long phys_addr, unsigned long flags)
+	unsigned long phys_addr, pgprot_t prot)
 {
 	unsigned long end;
 
@@ -53,10 +52,10 @@ static inline int remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned lo
 	if (address >= end)
 		BUG();
 	do {
-		pte_t * pte = pte_alloc_kernel(&init_mm, pmd, address);
+		pte_t * pte = pte_alloc_kernel(pmd, address);
 		if (!pte)
 			return -ENOMEM;
-		remap_area_pte(pte, address, end - address, address + phys_addr, flags);
+		remap_area_pte(pte, address, end - address, address + phys_addr, prot);
 		address = (address + PMD_SIZE) & PMD_MASK;
 		pmd++;
 	} while (address && (address < end));
@@ -64,7 +63,7 @@ static inline int remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned lo
 }
 
 static int remap_area_pages(unsigned long address, unsigned long phys_addr,
-				 unsigned long size, unsigned long flags)
+				 unsigned long size, pgprot_t prot)
 {
 	int error;
 	pgd_t * dir;
@@ -75,21 +74,25 @@ static int remap_area_pages(unsigned long address, unsigned long phys_addr,
 	flush_cache_all();
 	if (address >= end)
 		BUG();
-	spin_lock(&init_mm.page_table_lock);
 	do {
+		pud_t *pud;
 		pmd_t *pmd;
-		pmd = pmd_alloc(&init_mm, dir, address);
+
 		error = -ENOMEM;
+		pud = pud_alloc(&init_mm, dir, address);
+		if (!pud)
+			break;
+		pmd = pmd_alloc(&init_mm, pud, address);
+
 		if (!pmd)
 			break;
 		if (remap_area_pmd(pmd, address, end - address,
-				   phys_addr + address, flags))
+				   phys_addr + address, prot))
 			break;
 		error = 0;
 		address = (address + PGDIR_SIZE) & PGDIR_MASK;
 		dir++;
 	} while (address && (address < end));
-	spin_unlock(&init_mm.page_table_lock);
 	flush_tlb_all();
 	return error;
 }
@@ -107,9 +110,9 @@ static int remap_area_pages(unsigned long address, unsigned long phys_addr,
  * have to convert them into an offset in a page-aligned mapping, but the
  * caller shouldn't need to know that small detail.
  */
-void * __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)
+void __iomem * __ioremap_prot(unsigned long phys_addr, unsigned long size, pgprot_t prot)
 {
-	void * addr;
+	void __iomem * addr;
 	struct vm_struct * area;
 	unsigned long offset, last_addr;
 
@@ -131,15 +134,36 @@ void * __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flag
 	area = get_vm_area(size, VM_IOREMAP);
 	if (!area)
 		return NULL;
-	addr = area->addr;
-	if (remap_area_pages((unsigned long) addr, phys_addr, size, flags)) {
-		vfree(addr);
+	addr = (void __iomem *)area->addr;
+	if (remap_area_pages((unsigned long) addr, phys_addr, size, prot)) {
+		vfree((void __force *)addr);
 		return NULL;
 	}
-	return (void *) (offset + (char *)addr);
+	return (void __iomem *) (offset + (char __iomem *)addr);
+}
+
+void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)
+{
+	return __ioremap_prot(phys_addr, size,
+		              __pgprot(_PAGE_PRESENT | __READABLE |
+				       __WRITEABLE | _PAGE_GLOBAL |
+				       _PAGE_KERNEL | flags));
+}
+
+/**
+ * ioremap_nocache     -   map bus memory into CPU space
+ * @offset:    bus address of the memory
+ * @size:      size of the resource to map
+ *
+ * Must be freed with iounmap.
+ */
+
+void __iomem *ioremap_nocache (unsigned long phys_addr, unsigned long size)
+{
+        return __ioremap(phys_addr | MEM_NON_CACHEABLE, size, 0);
 }
 
-void iounmap(void *addr)
+void iounmap(volatile void __iomem *addr)
 {
 	if (addr > high_memory)
 		return vfree((void *) (PAGE_MASK & (unsigned long) addr));