X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fparisc%2Fmm%2Fioremap.c;h=44b42c7f639d073b0339396a8ecd8d4c908f7340;hb=refs%2Fheads%2Fvserver;hp=edd9a9559cba92298704e3428499e8995be22c00;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git

diff --git a/arch/parisc/mm/ioremap.c b/arch/parisc/mm/ioremap.c
index edd9a9559..44b42c7f6 100644
--- a/arch/parisc/mm/ioremap.c
+++ b/arch/parisc/mm/ioremap.c
@@ -2,143 +2,15 @@
  * arch/parisc/mm/ioremap.c
  *
  * (C) Copyright 1995 1996 Linus Torvalds
- * (C) Copyright 2001 Helge Deller <deller@gmx.de>
+ * (C) Copyright 2001-2006 Helge Deller <deller@gmx.de>
  * (C) Copyright 2005 Kyle McMartin <kyle@parisc-linux.org>
  */
 
 #include <linux/vmalloc.h>
 #include <linux/errno.h>
 #include <linux/module.h>
-#include <asm/io.h>
+#include <linux/io.h>
 #include <asm/pgalloc.h>
-#include <asm/tlbflush.h>
-#include <asm/cacheflush.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, pfn;
-	pgprot_t pgprot = __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY |
-				   _PAGE_ACCESSED | flags);
-
-	address &= ~PMD_MASK;
-
-	end = address + size;
-	if (end > PMD_SIZE)
-		end = PMD_SIZE;
-
-	BUG_ON(address >= end);
-
-	pfn = phys_addr >> PAGE_SHIFT;
-	do {
-		BUG_ON(!pte_none(*pte));
-
-		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;
-
-	BUG_ON(address >= end);
-
-	phys_addr -= address;
-	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;
-}
-
-#if USE_HPPA_IOREMAP
-static int 
-remap_area_pages(unsigned long address, unsigned long phys_addr,
-		 unsigned long size, unsigned long flags)
-{
-	pgd_t *dir;
-	int error = 0;
-	unsigned long end = address + size;
-
-	BUG_ON(address >= end);
-
-	phys_addr -= address;
-	dir = pgd_offset_k(address);
-
-	flush_cache_all();
-
-	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;
-}
-#endif /* USE_HPPA_IOREMAP */
-
-#ifdef CONFIG_DEBUG_IOREMAP
-static unsigned long last = 0;
-
-void gsc_bad_addr(unsigned long addr)
-{
-	if (time_after(jiffies, last + HZ*10)) {
-		printk("gsc_foo() called with bad address 0x%lx\n", addr);
-		dump_stack();
-		last = jiffies;
-	}
-}
-EXPORT_SYMBOL(gsc_bad_addr);
-
-void __raw_bad_addr(const volatile void __iomem *addr)
-{
-	if (time_after(jiffies, last + HZ*10)) {
-		printk("__raw_foo() called with bad address 0x%p\n", addr);
-		dump_stack();
-		last = jiffies;
-	}
-}
-EXPORT_SYMBOL(__raw_bad_addr);
-#endif
 
 /*
  * Generic mapping function (not visible outside):
@@ -154,26 +26,21 @@ EXPORT_SYMBOL(__raw_bad_addr);
  */
 void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)
 {
-#if !(USE_HPPA_IOREMAP)
+	void *addr;
+	struct vm_struct *area;
+	unsigned long offset, last_addr;
+	pgprot_t pgprot;
 
+#ifdef CONFIG_EISA
 	unsigned long end = phys_addr + size - 1;
 	/* Support EISA addresses */
-	if ((phys_addr >= 0x00080000 && end < 0x000fffff)
-			|| (phys_addr >= 0x00500000 && end < 0x03bfffff)) {
-		phys_addr |= 0xfc000000;
+	if ((phys_addr >= 0x00080000 && end < 0x000fffff) ||
+	    (phys_addr >= 0x00500000 && end < 0x03bfffff)) {
+		phys_addr |= F_EXTEND(0xfc000000);
+		flags |= _PAGE_NO_CACHE;
 	}
-
-#ifdef CONFIG_DEBUG_IOREMAP
-	return (void __iomem *)(phys_addr - (0x1UL << NYBBLE_SHIFT));
-#else
-	return (void __iomem *)phys_addr;
 #endif
 
-#else
-	void *addr;
-	struct vm_struct *area;
-	unsigned long offset, last_addr;
-
 	/* Don't allow wraparound or zero size */
 	last_addr = phys_addr + size - 1;
 	if (!size || last_addr < phys_addr)
@@ -196,6 +63,9 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
 		}
 	}
 
+	pgprot = __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY |
+			  _PAGE_ACCESSED | flags);
+
 	/*
 	 * Mappings have to be page-aligned
 	 */
@@ -211,21 +81,19 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
 		return NULL;
 
 	addr = area->addr;
-	if (remap_area_pages((unsigned long) addr, phys_addr, size, flags)) {
+	if (ioremap_page_range((unsigned long)addr, (unsigned long)addr + size,
+			       phys_addr, pgprot)) {
 		vfree(addr);
 		return NULL;
 	}
 
 	return (void __iomem *) (offset + (char *)addr);
-#endif
 }
+EXPORT_SYMBOL(__ioremap);
 
-void iounmap(void __iomem *addr)
+void iounmap(const volatile void __iomem *addr)
 {
-#if !(USE_HPPA_IOREMAP)
-	return;
-#else
 	if (addr > high_memory)
 		return vfree((void *) (PAGE_MASK & (unsigned long __force) addr));
-#endif
 }
+EXPORT_SYMBOL(iounmap);