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Subject[PATCH 5/14] Generic ioremap_page_range: avr32 conversion
Date
Convert AVR32 to use generic ioremap_page_range()

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
---
arch/avr32/mm/ioremap.c | 120 ++---------------------------------------------
1 files changed, 6 insertions(+), 114 deletions(-)

diff --git a/arch/avr32/mm/ioremap.c b/arch/avr32/mm/ioremap.c
index 5360218..8cfec65 100644
--- a/arch/avr32/mm/ioremap.c
+++ b/arch/avr32/mm/ioremap.c
@@ -7,119 +7,11 @@
*/
#include <linux/vmalloc.h>
#include <linux/module.h>
+#include <linux/io.h>

-#include <asm/io.h>
#include <asm/pgtable.h>
-#include <asm/cacheflush.h>
-#include <asm/tlbflush.h>
#include <asm/addrspace.h>

-static inline int remap_area_pte(pte_t *pte, unsigned long address,
- unsigned long end, unsigned long phys_addr,
- pgprot_t prot)
-{
- unsigned long pfn;
-
- pfn = phys_addr >> PAGE_SHIFT;
- do {
- WARN_ON(!pte_none(*pte));
-
- set_pte(pte, pfn_pte(pfn, prot));
- address += PAGE_SIZE;
- pfn++;
- pte++;
- } while (address && (address < end));
-
- return 0;
-}
-
-static inline int remap_area_pmd(pmd_t *pmd, unsigned long address,
- unsigned long end, unsigned long phys_addr,
- pgprot_t prot)
-{
- unsigned long next;
-
- phys_addr -= address;
-
- do {
- pte_t *pte = pte_alloc_kernel(pmd, address);
- if (!pte)
- return -ENOMEM;
-
- next = (address + PMD_SIZE) & PMD_MASK;
- if (remap_area_pte(pte, address, next,
- address + phys_addr, prot))
- return -ENOMEM;
-
- address = next;
- pmd++;
- } while (address && (address < end));
- return 0;
-}
-
-static int remap_area_pud(pud_t *pud, unsigned long address,
- unsigned long end, unsigned long phys_addr,
- pgprot_t prot)
-{
- unsigned long next;
-
- phys_addr -= address;
-
- do {
- pmd_t *pmd = pmd_alloc(&init_mm, pud, address);
- if (!pmd)
- return -ENOMEM;
- next = (address + PUD_SIZE) & PUD_MASK;
- if (remap_area_pmd(pmd, address, next,
- phys_addr + address, prot))
- return -ENOMEM;
-
- address = next;
- pud++;
- } while (address && address < end);
-
- return 0;
-}
-
-static int remap_area_pages(unsigned long address, unsigned long phys_addr,
- size_t size, pgprot_t prot)
-{
- unsigned long end = address + size;
- unsigned long next;
- pgd_t *pgd;
- int err = 0;
-
- phys_addr -= address;
-
- pgd = pgd_offset_k(address);
- flush_cache_all();
- BUG_ON(address >= end);
-
- spin_lock(&init_mm.page_table_lock);
- do {
- pud_t *pud = pud_alloc(&init_mm, pgd, address);
-
- err = -ENOMEM;
- if (!pud)
- break;
-
- next = (address + PGDIR_SIZE) & PGDIR_MASK;
- if (next < address || next > end)
- next = end;
- err = remap_area_pud(pud, address, next,
- phys_addr + address, prot);
- if (err)
- break;
-
- address = next;
- pgd++;
- } while (address && (address < end));
-
- spin_unlock(&init_mm.page_table_lock);
- flush_tlb_all();
- return err;
-}
-
/*
* Re-map an arbitrary physical address space into the kernel virtual
* address space. Needed when the kernel wants to access physical
@@ -128,7 +20,7 @@ static int remap_area_pages(unsigned lon
void __iomem *__ioremap(unsigned long phys_addr, size_t size,
unsigned long flags)
{
- void *addr;
+ unsigned long addr;
struct vm_struct *area;
unsigned long offset, last_addr;
pgprot_t prot;
@@ -159,7 +51,7 @@ void __iomem *__ioremap(unsigned long ph
phys_addr &= PAGE_MASK;
size = PAGE_ALIGN(last_addr + 1) - phys_addr;

- prot = __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY
+ prot = __pgprot(_PAGE_PRESENT | _PAGE_GLOBAL | _PAGE_RW | _PAGE_DIRTY
| _PAGE_ACCESSED | _PAGE_TYPE_SMALL | flags);

/*
@@ -169,9 +61,9 @@ void __iomem *__ioremap(unsigned long ph
if (!area)
return NULL;
area->phys_addr = phys_addr;
- addr = area->addr;
- if (remap_area_pages((unsigned long)addr, phys_addr, size, prot)) {
- vunmap(addr);
+ addr = (unsigned long )area->addr;
+ if (ioremap_page_range(addr, addr + size, phys_addr, prot)) {
+ vunmap((void *)addr);
return NULL;
}

--
1.4.0
-
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