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Diffstat (limited to 'arch/m32r/mm/ioremap.c')
-rw-r--r--arch/m32r/mm/ioremap.c111
1 files changed, 0 insertions, 111 deletions
diff --git a/arch/m32r/mm/ioremap.c b/arch/m32r/mm/ioremap.c
deleted file mode 100644
index 5152c4e6ac80..000000000000
--- a/arch/m32r/mm/ioremap.c
+++ /dev/null
@@ -1,111 +0,0 @@
-/*
- * linux/arch/m32r/mm/ioremap.c
- *
- * Copyright (c) 2001, 2002 Hiroyuki Kondo
- *
- * Taken from mips version.
- * (C) Copyright 1995 1996 Linus Torvalds
- * (C) Copyright 2001 Ralf Baechle
- */
-
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- */
-
-#include <linux/module.h>
-#include <asm/addrspace.h>
-#include <asm/byteorder.h>
-
-#include <linux/vmalloc.h>
-#include <linux/io.h>
-#include <asm/pgalloc.h>
-
-/*
- * Generic mapping function (not visible outside):
- */
-
-/*
- * Remap an arbitrary physical address space into the kernel virtual
- * address space. Needed when the kernel wants to access high addresses
- * directly.
- *
- * NOTE! We need to allow non-page-aligned mappings too: we will obviously
- * have to convert them into an offset in a page-aligned mapping, but the
- * caller shouldn't need to know that small detail.
- */
-
-#define IS_LOW512(addr) (!((unsigned long)(addr) & ~0x1fffffffUL))
-
-void __iomem *
-__ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)
-{
- void __iomem * addr;
- struct vm_struct * area;
- unsigned long offset, last_addr;
- pgprot_t pgprot;
-
- /* Don't allow wraparound or zero size */
- last_addr = phys_addr + size - 1;
- if (!size || last_addr < phys_addr)
- return NULL;
-
- /*
- * Map objects in the low 512mb of address space using KSEG1, otherwise
- * map using page tables.
- */
- if (IS_LOW512(phys_addr) && IS_LOW512(phys_addr + size - 1))
- return (void *) KSEG1ADDR(phys_addr);
-
- /*
- * Don't allow anybody to remap normal RAM that we're using..
- */
- if (phys_addr < virt_to_phys(high_memory)) {
- char *t_addr, *t_end;
- struct page *page;
-
- t_addr = __va(phys_addr);
- t_end = t_addr + (size - 1);
-
- for(page = virt_to_page(t_addr); page <= virt_to_page(t_end); page++)
- if(!PageReserved(page))
- return NULL;
- }
-
- pgprot = __pgprot(_PAGE_GLOBAL | _PAGE_PRESENT | _PAGE_READ
- | _PAGE_WRITE | flags);
-
- /*
- * Mappings have to be page-aligned
- */
- offset = phys_addr & ~PAGE_MASK;
- phys_addr &= PAGE_MASK;
- size = PAGE_ALIGN(last_addr + 1) - phys_addr;
-
- /*
- * Ok, go for it..
- */
- area = get_vm_area(size, VM_IOREMAP);
- if (!area)
- return NULL;
- area->phys_addr = phys_addr;
- addr = (void __iomem *) area->addr;
- if (ioremap_page_range((unsigned long)addr, (unsigned long)addr + size,
- phys_addr, pgprot)) {
- vunmap((void __force *) addr);
- return NULL;
- }
-
- return (void __iomem *) (offset + (char __iomem *)addr);
-}
-
-#define IS_KSEG1(addr) (((unsigned long)(addr) & ~0x1fffffffUL) == KSEG1)
-
-void iounmap(volatile void __iomem *addr)
-{
- if (!IS_KSEG1(addr))
- vfree((void *) (PAGE_MASK & (unsigned long) addr));
-}
-