Messages in this thread Patch in this message | | | From | Haavard Skinnemoen <> | Subject | [PATCH 12/14] Generic ioremap_page_range: sh conversion | Date | Thu, 10 Aug 2006 18:03:44 +0200 |
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From: Paul Mundt <lethal@linux-sh.org>
Convert SH to use generic ioremap_page_range()
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> --- arch/sh/mm/ioremap.c | 97 ++++---------------------------------------------- 1 files changed, 7 insertions(+), 90 deletions(-)
diff --git a/arch/sh/mm/ioremap.c b/arch/sh/mm/ioremap.c index 96fa4a9..5ef9245 100644 --- a/arch/sh/mm/ioremap.c +++ b/arch/sh/mm/ioremap.c @@ -15,98 +15,10 @@ #include <linux/vmalloc.h> #include <linux/module.h> #include <linux/mm.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(_PAGE_PRESENT | _PAGE_RW | - _PAGE_DIRTY | _PAGE_ACCESSED | - _PAGE_HW_SHARED | _PAGE_FLAGS_HARD | 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 @@ -122,6 +34,7 @@ void __iomem *__ioremap(unsigned long ph { 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; @@ -177,8 +90,12 @@ #ifdef CONFIG_32BIT } #endif + pgprot = __pgprot(_PAGE_PRESENT | _PAGE_RW | + _PAGE_DIRTY | _PAGE_ACCESSED | + _PAGE_HW_SHARED | _PAGE_FLAGS_HARD | 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; } -- 1.4.0 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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