[PATCH] Generic ioremap_page_range: sh conversion

Convert SH to use generic ioremap_page_range()

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: 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, 4 insertions, 86 deletions

diff --git a/arch/sh/mm/ioremap.c b/arch/sh/mm/ioremap.c
index 11d54c149821..90b494a0cf45 100644
--- a/arch/sh/mm/ioremap.c
+++ b/arch/sh/mm/ioremap.c
@@ -16,97 +16,13 @@
 #include <linux/module.h>
 #include <linux/mm.h>
 #include <linux/pci.h>
-#include <asm/io.h>
+#include <linux/io.h>
 #include <asm/page.h>
 #include <asm/pgalloc.h>
 #include <asm/addrspace.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(pgprot_val(PAGE_KERNEL_NOCACHE) | 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;
-}
-
-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 {
-                pud_t *pud;
-                pmd_t *pmd;
-
-                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))
-                        break;
-                error = 0;
-                address = (address + PGDIR_SIZE) & PGDIR_MASK;
-                dir++;
-        } while (address && (address < end));
-        flush_tlb_all();
-        return error;
-}
-
 /*
  * Remap an arbitrary physical address space into the kernel virtual
  * address space. Needed when the kernel wants to access high addresses
@@ -121,6 +37,7 @@ void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
 {
         struct vm_struct * area;
         unsigned long offset, last_addr, addr, orig_addr;
+        pgprot_t pgprot;
 
         /* Don't allow wraparound or zero size */
         last_addr = phys_addr + size - 1;
@@ -190,8 +107,9 @@ void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
         }
 #endif
 
+        pgprot = __pgprot(pgprot_val(PAGE_KERNEL_NOCACHE) | flags);
         if (likely(size))
-                if (remap_area_pages(addr, phys_addr, size, flags)) {
+                if (ioremap_page_range(addr, addr + size, phys_addr, pgprot)) {
                         vunmap((void *)orig_addr);
                         return NULL;
                 }