1 files changed, 0 insertions, 274 deletions
diff --git a/arch/x86/mm/ioremap_32.c b/arch/x86/mm/ioremap_32.c
deleted file mode 100644
index 0b278315d737..000000000000
--- a/arch/x86/mm/ioremap_32.c
+++ /dev/null
@@ -1,274 +0,0 @@
-/*
- * arch/i386/mm/ioremap.c
- *
- * Re-map IO memory to kernel address space so that we can access it.
- * This is needed for high PCI addresses that aren't mapped in the
- * 640k-1MB IO memory area on PC's
- *
- * (C) Copyright 1995 1996 Linus Torvalds
- */
-
-#include <linux/vmalloc.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/io.h>
-#include <asm/fixmap.h>
-#include <asm/cacheflush.h>
-#include <asm/tlbflush.h>
-#include <asm/pgtable.h>
-
-#define ISA_START_ADDRESS	0xa0000
-#define ISA_END_ADDRESS		0x100000
-
-/*
- * 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.
- */
-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 prot;
-
-	/* Don't allow wraparound or zero size */
-	last_addr = phys_addr + size - 1;
-	if (!size || last_addr < phys_addr)
-		return NULL;
-
-	/*
-	 * Don't remap the low PCI/ISA area, it's always mapped..
-	 */
-	if (phys_addr >= ISA_START_ADDRESS && last_addr < ISA_END_ADDRESS)
-		return (void __iomem *) phys_to_virt(phys_addr);
-
-	/*
-	 * Don't allow anybody to remap normal RAM that we're using..
-	 */
-	if (phys_addr <= virt_to_phys(high_memory - 1)) {
-		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;
-	}
-
-	prot = __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY
-			| _PAGE_ACCESSED | 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 | (flags << 20));
-	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, prot)) {
-		vunmap((void __force *) addr);
-		return NULL;
-	}
-	return (void __iomem *) (offset + (char __iomem *)addr);
-}
-EXPORT_SYMBOL(__ioremap);
-
-/**
- * ioremap_nocache     -   map bus memory into CPU space
- * @offset:    bus address of the memory
- * @size:      size of the resource to map
- *
- * ioremap_nocache performs a platform specific sequence of operations to
- * make bus memory CPU accessible via the readb/readw/readl/writeb/
- * writew/writel functions and the other mmio helpers. The returned
- * address is not guaranteed to be usable directly as a virtual
- * address. 
- *
- * This version of ioremap ensures that the memory is marked uncachable
- * on the CPU as well as honouring existing caching rules from things like
- * the PCI bus. Note that there are other caches and buffers on many 
- * busses. In particular driver authors should read up on PCI writes
- *
- * It's useful if some control registers are in such an area and
- * write combining or read caching is not desirable:
- * 
- * Must be freed with iounmap.
- */
-
-void __iomem *ioremap_nocache (unsigned long phys_addr, unsigned long size)
-{
-	unsigned long last_addr;
-	void __iomem *p = __ioremap(phys_addr, size, _PAGE_PCD);
-	if (!p) 
-		return p; 
-
-	/* Guaranteed to be > phys_addr, as per __ioremap() */
-	last_addr = phys_addr + size - 1;
-
-	if (last_addr < virt_to_phys(high_memory) - 1) {
-		struct page *ppage = virt_to_page(__va(phys_addr));		
-		unsigned long npages;
-
-		phys_addr &= PAGE_MASK;
-
-		/* This might overflow and become zero.. */
-		last_addr = PAGE_ALIGN(last_addr);
-
-		/* .. but that's ok, because modulo-2**n arithmetic will make
-	 	* the page-aligned "last - first" come out right.
-	 	*/
-		npages = (last_addr - phys_addr) >> PAGE_SHIFT;
-
-		if (change_page_attr(ppage, npages, PAGE_KERNEL_NOCACHE) < 0) { 
-			iounmap(p); 
-			p = NULL;
-		}
-		global_flush_tlb();
-	}
-
-	return p;					
-}
-EXPORT_SYMBOL(ioremap_nocache);
-
-/**
- * iounmap - Free a IO remapping
- * @addr: virtual address from ioremap_*
- *
- * Caller must ensure there is only one unmapping for the same pointer.
- */
-void iounmap(volatile void __iomem *addr)
-{
-	struct vm_struct *p, *o;
-
-	if ((void __force *)addr <= high_memory)
-		return;
-
-	/*
-	 * __ioremap special-cases the PCI/ISA range by not instantiating a
-	 * vm_area and by simply returning an address into the kernel mapping
-	 * of ISA space.   So handle that here.
-	 */
-	if (addr >= phys_to_virt(ISA_START_ADDRESS) &&
-			addr < phys_to_virt(ISA_END_ADDRESS))
-		return;
-
-	addr = (volatile void __iomem *)(PAGE_MASK & (unsigned long __force)addr);
-
-	/* Use the vm area unlocked, assuming the caller
-	   ensures there isn't another iounmap for the same address
-	   in parallel. Reuse of the virtual address is prevented by
-	   leaving it in the global lists until we're done with it.
-	   cpa takes care of the direct mappings. */
-	read_lock(&vmlist_lock);
-	for (p = vmlist; p; p = p->next) {
-		if (p->addr == addr)
-			break;
-	}
-	read_unlock(&vmlist_lock);
-
-	if (!p) {
-		printk("iounmap: bad address %p\n", addr);
-		dump_stack();
-		return;
-	}
-
-	/* Reset the direct mapping. Can block */
-	if ((p->flags >> 20) && p->phys_addr < virt_to_phys(high_memory) - 1) {
-		change_page_attr(virt_to_page(__va(p->phys_addr)),
-				 get_vm_area_size(p) >> PAGE_SHIFT,
-				 PAGE_KERNEL);
-		global_flush_tlb();
-	} 
-
-	/* Finally remove it */
-	o = remove_vm_area((void *)addr);
-	BUG_ON(p != o || o == NULL);
-	kfree(p); 
-}
-EXPORT_SYMBOL(iounmap);
-
-void __init *bt_ioremap(unsigned long phys_addr, unsigned long size)
-{
-	unsigned long offset, last_addr;
-	unsigned int nrpages;
-	enum fixed_addresses idx;
-
-	/* Don't allow wraparound or zero size */
-	last_addr = phys_addr + size - 1;
-	if (!size || last_addr < phys_addr)
-		return NULL;
-
-	/*
-	 * Don't remap the low PCI/ISA area, it's always mapped..
-	 */
-	if (phys_addr >= ISA_START_ADDRESS && last_addr < ISA_END_ADDRESS)
-		return phys_to_virt(phys_addr);
-
-	/*
-	 * Mappings have to be page-aligned
-	 */
-	offset = phys_addr & ~PAGE_MASK;
-	phys_addr &= PAGE_MASK;
-	size = PAGE_ALIGN(last_addr) - phys_addr;
-
-	/*
-	 * Mappings have to fit in the FIX_BTMAP area.
-	 */
-	nrpages = size >> PAGE_SHIFT;
-	if (nrpages > NR_FIX_BTMAPS)
-		return NULL;
-
-	/*
-	 * Ok, go for it..
-	 */
-	idx = FIX_BTMAP_BEGIN;
-	while (nrpages > 0) {
-		set_fixmap(idx, phys_addr);
-		phys_addr += PAGE_SIZE;
-		--idx;
-		--nrpages;
-	}
-	return (void*) (offset + fix_to_virt(FIX_BTMAP_BEGIN));
-}
-
-void __init bt_iounmap(void *addr, unsigned long size)
-{
-	unsigned long virt_addr;
-	unsigned long offset;
-	unsigned int nrpages;
-	enum fixed_addresses idx;
-
-	virt_addr = (unsigned long)addr;
-	if (virt_addr < fix_to_virt(FIX_BTMAP_BEGIN))
-		return;
-	offset = virt_addr & ~PAGE_MASK;
-	nrpages = PAGE_ALIGN(offset + size - 1) >> PAGE_SHIFT;
-
-	idx = FIX_BTMAP_BEGIN;
-	while (nrpages > 0) {
-		clear_fixmap(idx);
-		--idx;
-		--nrpages;
-	}
-}