[PATCH] Generic ioremap_page_range: m32r conversion

Convert m32r to use generic ioremap_page_range()

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: <linux-m32r@ml.linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/arch/m32r/mm/ioremap.c b/arch/m32r/mm/ioremap.c
index a151849..5152c4e 100644 (file)
--- a/arch/m32r/mm/ioremap.c
+++ b/arch/m32r/mm/ioremap.c
@@ -20,92 +20,8 @@
 #include <asm/byteorder.h>
 
 #include <linux/vmalloc.h>
-#include <asm/io.h>
+#include <linux/io.h>
 #include <asm/pgalloc.h>
-#include <asm/cacheflush.h>
-#include <asm/tlbflush.h>
-
-static inline void
-remap_area_pte(pte_t * pte, unsigned long address, unsigned long size,
-              unsigned long phys_addr, unsigned long flags)
-{
-       unsigned long end;
-       unsigned long pfn;
-       pgprot_t pgprot = __pgprot(_PAGE_GLOBAL | _PAGE_PRESENT | _PAGE_READ
-                                  | _PAGE_WRITE | flags);
-
-       address &= ~PMD_MASK;
-       end = address + size;
-       if (end > PMD_SIZE)
-               end = PMD_SIZE;
-       if (address >= end)
-               BUG();
-       pfn = phys_addr >> PAGE_SHIFT;
-       do {
-               if (!pte_none(*pte)) {
-                       printk("remap_area_pte: page already exists\n");
-                       BUG();
-               }
-               set_pte(pte, pfn_pte(pfn, pgprot));
-               address += PAGE_SIZE;
-               pfn++;
-               pte++;
-       } while (address && (address < end));
-}
-
-static inline int
-remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned long size,
-              unsigned long phys_addr, unsigned long flags)
-{
-       unsigned long end;
-
-       address &= ~PGDIR_MASK;
-       end = address + size;
-       if (end > PGDIR_SIZE)
-               end = PGDIR_SIZE;
-       phys_addr -= address;
-       if (address >= end)
-               BUG();
-       do {
-               pte_t * pte = pte_alloc_kernel(pmd, address);
-               if (!pte)
-                       return -ENOMEM;
-               remap_area_pte(pte, address, end - address, address + phys_addr, flags);
-               address = (address + PMD_SIZE) & PMD_MASK;
-               pmd++;
-       } while (address && (address < end));
-       return 0;
-}
-
-static int
-remap_area_pages(unsigned long address, unsigned long phys_addr,
-                unsigned long size, unsigned long flags)
-{
-       int error;
-       pgd_t * dir;
-       unsigned long end = address + size;
-
-       phys_addr -= address;
-       dir = pgd_offset(&init_mm, address);
-       flush_cache_all();
-       if (address >= end)
-               BUG();
-       do {
-               pmd_t *pmd;
-               pmd = pmd_alloc(&init_mm, dir, address);
-               error = -ENOMEM;
-               if (!pmd)
-                       break;
-               if (remap_area_pmd(pmd, address, end - address,
-                                        phys_addr + address, flags))
-                       break;
-               error = 0;
-               address = (address + PGDIR_SIZE) & PGDIR_MASK;
-               dir++;
-       } while (address && (address < end));
-       flush_tlb_all();
-       return error;
-}
 
 /*
  * Generic mapping function (not visible outside):
@@ -129,6 +45,7 @@ __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)
        void __iomem * addr;
        struct vm_struct * area;
        unsigned long offset, last_addr;
+       pgprot_t pgprot;
 
        /* Don't allow wraparound or zero size */
        last_addr = phys_addr + size - 1;
@@ -157,6 +74,9 @@ __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)
                                return NULL;
        }
 
+       pgprot = __pgprot(_PAGE_GLOBAL | _PAGE_PRESENT | _PAGE_READ
+                         | _PAGE_WRITE | flags);
+
        /*
         * Mappings have to be page-aligned
         */
@@ -172,7 +92,8 @@ __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)
                return NULL;
        area->phys_addr = phys_addr;
        addr = (void __iomem *) area->addr;
-       if (remap_area_pages((unsigned long)addr, phys_addr, size, flags)) {
+       if (ioremap_page_range((unsigned long)addr, (unsigned long)addr + size,
+                              phys_addr, pgprot)) {
                vunmap((void __force *) addr);
                return NULL;
        }