1 files changed, 0 insertions, 270 deletions
diff --git a/arch/x86_64/mm/ioremap.c b/arch/x86_64/mm/ioremap.c
deleted file mode 100644
index 6972df480d2..00000000000
--- a/arch/x86_64/mm/ioremap.c
+++ /dev/null
@@ -1,270 +0,0 @@
-/*
- * arch/x86_64/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 <asm/io.h>
-#include <asm/pgalloc.h>
-#include <asm/fixmap.h>
-#include <asm/cacheflush.h>
-#include <asm/tlbflush.h>
-#include <asm/proto.h>
-
-#define ISA_START_ADDRESS      0xa0000
-#define ISA_END_ADDRESS                0x100000
-
-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;
-
-	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(_PAGE_PRESENT | _PAGE_RW | 
-					_PAGE_GLOBAL | _PAGE_DIRTY | _PAGE_ACCESSED | flags)));
-		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 &= ~PUD_MASK;
-	end = address + size;
-	if (end > PUD_SIZE)
-		end = PUD_SIZE;
-	phys_addr -= address;
-	if (address >= end)
-		BUG();
-	do {
-		pte_t * pte = pte_alloc_kernel(&init_mm, 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;
-}
-
-static inline int remap_area_pud(pud_t * pud, 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 {
-		pmd_t * pmd = pmd_alloc(&init_mm, pud, address);
-		if (!pmd)
-			return -ENOMEM;
-		remap_area_pmd(pmd, address, end - address, address + phys_addr, flags);
-		address = (address + PUD_SIZE) & PUD_MASK;
-		pud++;
-	} while (address && (address < end));
-	return 0;
-}
-
-static int remap_area_pages(unsigned long address, unsigned long phys_addr,
-				 unsigned long size, unsigned long flags)
-{
-	int error;
-	pgd_t *pgd;
-	unsigned long end = address + size;
-
-	phys_addr -= address;
-	pgd = pgd_offset_k(address);
-	flush_cache_all();
-	if (address >= end)
-		BUG();
-	spin_lock(&init_mm.page_table_lock);
-	do {
-		pud_t *pud;
-		pud = pud_alloc(&init_mm, pgd, address);
-		error = -ENOMEM;
-		if (!pud)
-			break;
-		if (remap_area_pud(pud, address, end - address,
-					 phys_addr + address, flags))
-			break;
-		error = 0;
-		address = (address + PGDIR_SIZE) & PGDIR_MASK;
-		pgd++;
-	} while (address && (address < end));
-	spin_unlock(&init_mm.page_table_lock);
-	flush_tlb_all();
-	return error;
-}
-
-/*
- * Fix up the linear direct mapping of the kernel to avoid cache attribute
- * conflicts.
- */
-static int
-ioremap_change_attr(unsigned long phys_addr, unsigned long size,
-					unsigned long flags)
-{
-	int err = 0;
-	if (phys_addr + size - 1 < (end_pfn_map << PAGE_SHIFT)) {
-		unsigned long npages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
-		unsigned long vaddr = (unsigned long) __va(phys_addr);
-
-		/*
- 		 * Must use a address here and not struct page because the phys addr
-		 * can be a in hole between nodes and not have an memmap entry.
-		 */
-		err = change_page_attr_addr(vaddr,npages,__pgprot(__PAGE_KERNEL|flags));
-		if (!err)
-			global_flush_tlb();
-	}
-	return err;
-}
-
-/*
- * Generic mapping function
- */
-
-/*
- * 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 * 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)
-		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 (__force void __iomem *)phys_to_virt(phys_addr);
-
-#ifdef CONFIG_FLATMEM
-	/*
-	 * Don't allow anybody to remap normal RAM that we're using..
-	 */
-	if (last_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;
-	}
-#endif
-
-	/*
-	 * 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 = area->addr;
-	if (remap_area_pages((unsigned long) addr, phys_addr, size, flags)) {
-		remove_vm_area((void *)(PAGE_MASK & (unsigned long) addr));
-		return NULL;
-	}
-	if (flags && ioremap_change_attr(phys_addr, size, flags) < 0) {
-		area->flags &= 0xffffff;
-		vunmap(addr);
-		return NULL;
-	}
-	return (__force void __iomem *) (offset + (char *)addr);
-}
-
-/**
- * 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)
-{
-	return __ioremap(phys_addr, size, _PAGE_PCD);
-}
-
-void iounmap(volatile void __iomem *addr)
-{
-	struct vm_struct *p;
-
-	if (addr <= high_memory) 
-		return; 
-	if (addr >= phys_to_virt(ISA_START_ADDRESS) &&
-		addr < phys_to_virt(ISA_END_ADDRESS))
-		return;
-
-	write_lock(&vmlist_lock);
-	p = __remove_vm_area((void *)((unsigned long)addr & PAGE_MASK));
-	if (!p)
-		printk("iounmap: bad address %p\n", addr);
-	else if (p->flags >> 20)
-		ioremap_change_attr(p->phys_addr, p->size, 0);
-	write_unlock(&vmlist_lock);
-	kfree(p); 
-}