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[PATCH] Generic ioremap_page_range: parisc conversion
Convert parisc to use generic ioremap_page_range() Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Kyle McMartin <kyle@parisc-linux.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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1 changed files with 7 additions and 104 deletions
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@ -9,110 +9,8 @@
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#include <linux/vmalloc.h>
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#include <linux/errno.h>
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#include <linux/module.h>
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#include <asm/io.h>
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#include <linux/io.h>
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#include <asm/pgalloc.h>
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#include <asm/tlbflush.h>
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#include <asm/cacheflush.h>
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static inline void
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remap_area_pte(pte_t *pte, unsigned long address, unsigned long size,
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unsigned long phys_addr, unsigned long flags)
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{
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unsigned long end, pfn;
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pgprot_t pgprot = __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY |
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_PAGE_ACCESSED | flags);
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address &= ~PMD_MASK;
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end = address + size;
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if (end > PMD_SIZE)
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end = PMD_SIZE;
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BUG_ON(address >= end);
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pfn = phys_addr >> PAGE_SHIFT;
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do {
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BUG_ON(!pte_none(*pte));
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set_pte(pte, pfn_pte(pfn, pgprot));
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address += PAGE_SIZE;
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pfn++;
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pte++;
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} while (address && (address < end));
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}
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static inline int
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remap_area_pmd(pmd_t *pmd, unsigned long address, unsigned long size,
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unsigned long phys_addr, unsigned long flags)
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{
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unsigned long end;
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address &= ~PGDIR_MASK;
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end = address + size;
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if (end > PGDIR_SIZE)
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end = PGDIR_SIZE;
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BUG_ON(address >= end);
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phys_addr -= address;
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do {
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pte_t *pte = pte_alloc_kernel(pmd, address);
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if (!pte)
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return -ENOMEM;
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remap_area_pte(pte, address, end - address,
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address + phys_addr, flags);
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address = (address + PMD_SIZE) & PMD_MASK;
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pmd++;
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} while (address && (address < end));
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return 0;
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}
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static int
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remap_area_pages(unsigned long address, unsigned long phys_addr,
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unsigned long size, unsigned long flags)
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{
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pgd_t *dir;
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int error = 0;
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unsigned long end = address + size;
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BUG_ON(address >= end);
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phys_addr -= address;
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dir = pgd_offset_k(address);
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flush_cache_all();
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do {
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pud_t *pud;
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pmd_t *pmd;
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error = -ENOMEM;
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pud = pud_alloc(&init_mm, dir, address);
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if (!pud)
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break;
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pmd = pmd_alloc(&init_mm, pud, address);
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if (!pmd)
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break;
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if (remap_area_pmd(pmd, address, end - address,
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phys_addr + address, flags))
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break;
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error = 0;
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address = (address + PGDIR_SIZE) & PGDIR_MASK;
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dir++;
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} while (address && (address < end));
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flush_tlb_all();
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return error;
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}
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/*
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* Generic mapping function (not visible outside):
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@ -131,6 +29,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
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void *addr;
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struct vm_struct *area;
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unsigned long offset, last_addr;
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pgprot_t pgprot;
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#ifdef CONFIG_EISA
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unsigned long end = phys_addr + size - 1;
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@ -164,6 +63,9 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
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}
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}
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pgprot = __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY |
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_PAGE_ACCESSED | flags);
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/*
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* Mappings have to be page-aligned
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*/
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@ -179,7 +81,8 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
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return NULL;
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addr = area->addr;
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if (remap_area_pages((unsigned long) addr, phys_addr, size, flags)) {
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if (ioremap_page_range((unsigned long)addr, (unsigned long)addr + size,
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phys_addr, pgprot)) {
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vfree(addr);
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return NULL;
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}
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