[PATCH] Generic ioremap_page_range: sh64 conversion

Convert SH64 to use generic ioremap_page_range()

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

1 files changed, 8 insertions, 92 deletions

diff --git a/arch/sh64/mm/ioremap.c b/arch/sh64/mm/ioremap.c
index 80c56754f513..ff26c02511aa 100644
--- a/arch/sh64/mm/ioremap.c
+++ b/arch/sh64/mm/ioremap.c
@@ -18,7 +18,7 @@
 #include <linux/vmalloc.h>
 #include <linux/sched.h>
 #include <linux/string.h>
-#include <asm/io.h>
+#include <linux/io.h>
 #include <asm/pgalloc.h>
 #include <asm/tlbflush.h>
 #include <linux/ioport.h>
@@ -28,96 +28,6 @@
 static void shmedia_mapioaddr(unsigned long, unsigned long);
 static unsigned long shmedia_ioremap(struct resource *, u32, int);
 
-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_PRESENT  | _PAGE_READ   |
-                                   _PAGE_WRITE    | _PAGE_DIRTY  |
-                                   _PAGE_ACCESSED | _PAGE_SHARED | flags);
-
-        address &= ~PMD_MASK;
-        end = address + size;
-        if (end > PMD_SIZE)
-                end = PMD_SIZE;
-        if (address >= end)
-                BUG();
-
-        pfn = phys_addr >> PAGE_SHIFT;
-
-        pr_debug("    %s: pte %p address %lx size %lx phys_addr %lx\n",
-                 __FUNCTION__,pte,address,size,phys_addr);
-
-        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_k(address);
-        flush_cache_all();
-        if (address >= end)
-                BUG();
-        do {
-                pmd_t *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 0;
-}
-
 /*
  * Generic mapping function (not visible outside):
  */
@@ -136,12 +46,17 @@ void * __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flag
         void * 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;
         if (!size || last_addr < phys_addr)
                 return NULL;
 
+        pgprot = __pgprot(_PAGE_PRESENT  | _PAGE_READ   |
+                          _PAGE_WRITE    | _PAGE_DIRTY  |
+                          _PAGE_ACCESSED | _PAGE_SHARED | flags);
+
         /*
          * Mappings have to be page-aligned
          */
@@ -158,7 +73,8 @@ void * __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flag
                 return NULL;
         area->phys_addr = phys_addr;
         addr = 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(addr);
                 return NULL;
         }