[PATCH] Generic ioremap_page_range: i386 conversion

Convert i386 to use generic ioremap_page_range()

[bunk@stusta.de: build fix]
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Acked-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 6 insertions, 78 deletions

diff --git a/arch/i386/mm/ioremap.c b/arch/i386/mm/ioremap.c
index 247fde76aaed..fff08ae7b5ed 100644
--- a/arch/i386/mm/ioremap.c
+++ b/arch/i386/mm/ioremap.c
@@ -12,7 +12,7 @@
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/module.h>
-#include <asm/io.h>
+#include <linux/io.h>
 #include <asm/fixmap.h>
 #include <asm/cacheflush.h>
 #include <asm/tlbflush.h>
@@ -21,82 +21,6 @@
 #define ISA_START_ADDRESS       0xa0000
 #define ISA_END_ADDRESS         0x100000
 
-static int ioremap_pte_range(pmd_t *pmd, unsigned long addr,
-                unsigned long end, unsigned long phys_addr, unsigned long flags)
-{
-        pte_t *pte;
-        unsigned long pfn;
-
-        pfn = phys_addr >> PAGE_SHIFT;
-        pte = pte_alloc_kernel(pmd, addr);
-        if (!pte)
-                return -ENOMEM;
-        do {
-                BUG_ON(!pte_none(*pte));
-                set_pte(pte, pfn_pte(pfn, __pgprot(_PAGE_PRESENT | _PAGE_RW | 
-                                        _PAGE_DIRTY | _PAGE_ACCESSED | flags)));
-                pfn++;
-        } while (pte++, addr += PAGE_SIZE, addr != end);
-        return 0;
-}
-
-static inline int ioremap_pmd_range(pud_t *pud, unsigned long addr,
-                unsigned long end, unsigned long phys_addr, unsigned long flags)
-{
-        pmd_t *pmd;
-        unsigned long next;
-
-        phys_addr -= addr;
-        pmd = pmd_alloc(&init_mm, pud, addr);
-        if (!pmd)
-                return -ENOMEM;
-        do {
-                next = pmd_addr_end(addr, end);
-                if (ioremap_pte_range(pmd, addr, next, phys_addr + addr, flags))
-                        return -ENOMEM;
-        } while (pmd++, addr = next, addr != end);
-        return 0;
-}
-
-static inline int ioremap_pud_range(pgd_t *pgd, unsigned long addr,
-                unsigned long end, unsigned long phys_addr, unsigned long flags)
-{
-        pud_t *pud;
-        unsigned long next;
-
-        phys_addr -= addr;
-        pud = pud_alloc(&init_mm, pgd, addr);
-        if (!pud)
-                return -ENOMEM;
-        do {
-                next = pud_addr_end(addr, end);
-                if (ioremap_pmd_range(pud, addr, next, phys_addr + addr, flags))
-                        return -ENOMEM;
-        } while (pud++, addr = next, addr != end);
-        return 0;
-}
-
-static int ioremap_page_range(unsigned long addr,
-                unsigned long end, unsigned long phys_addr, unsigned long flags)
-{
-        pgd_t *pgd;
-        unsigned long next;
-        int err;
-
-        BUG_ON(addr >= end);
-        flush_cache_all();
-        phys_addr -= addr;
-        pgd = pgd_offset_k(addr);
-        do {
-                next = pgd_addr_end(addr, end);
-                err = ioremap_pud_range(pgd, addr, next, phys_addr+addr, flags);
-                if (err)
-                        break;
-        } while (pgd++, addr = next, addr != end);
-        flush_tlb_all();
-        return err;
-}
-
 /*
  * Generic mapping function (not visible outside):
  */
@@ -115,6 +39,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
         void __iomem * addr;
         struct vm_struct * area;
         unsigned long offset, last_addr;
+        pgprot_t prot;
 
         /* Don't allow wraparound or zero size */
         last_addr = phys_addr + size - 1;
@@ -142,6 +67,9 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
                                 return NULL;
         }
 
+        prot = __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY
+                        | _PAGE_ACCESSED | flags);
+
         /*
          * Mappings have to be page-aligned
          */
@@ -158,7 +86,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
         area->phys_addr = phys_addr;
         addr = (void __iomem *) area->addr;
         if (ioremap_page_range((unsigned long) addr,
-                        (unsigned long) addr + size, phys_addr, flags)) {
+                        (unsigned long) addr + size, phys_addr, prot)) {
                 vunmap((void __force *) addr);
                 return NULL;
         }