avr32: remove support for AVR32 architecture

This patch drops support for AVR32 architecture from the Linux kernel.

The AVR32 architecture is not keeping up with the development of the
kernel, and since it shares so much of the drivers with Atmel ARM SoC,
it is starting to hinder these drivers to develop swiftly.

Also, all AVR32 AP7 SoC processors are end of lifed from Atmel (now
Microchip).

Finally, the GCC toolchain is stuck at version 4.2.x, and has not
received any patches since the last release from Atmel;
4.2.4-atmel.1.1.3.avr32linux.1. When building kernel v4.10, this
toolchain is no longer able to properly link the network stack.

Haavard and I have came to the conclusion that we feel keeping AVR32 on
life support offers more obstacles for Atmel ARMs, than it gives joy to
AVR32 users. I also suspect there are very few AVR32 users left today,
if anybody at all.

Signed-off-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Håvard Skinnemoen <hskinnemoen@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>

9 files changed, 0 insertions, 1285 deletions

diff --git a/arch/avr32/mm/Makefile b/arch/avr32/mm/Makefile
deleted file mode 100644
index 0066491f90d4..000000000000
--- a/arch/avr32/mm/Makefile
+++ /dev/null
@@ -1,6 +0,0 @@
-#
-# Makefile for the Linux/AVR32 kernel.
-#
-
-obj-y				+= init.o clear_page.o copy_page.o dma-coherent.o
-obj-y				+= ioremap.o cache.o fault.o tlb.o
diff --git a/arch/avr32/mm/cache.c b/arch/avr32/mm/cache.c
deleted file mode 100644
index d9476825fc43..000000000000
--- a/arch/avr32/mm/cache.c
+++ /dev/null
@@ -1,163 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/highmem.h>
-#include <linux/unistd.h>
-
-#include <asm/cacheflush.h>
-#include <asm/cachectl.h>
-#include <asm/processor.h>
-#include <linux/uaccess.h>
-#include <asm/syscalls.h>
-
-/*
- * If you attempt to flush anything more than this, you need superuser
- * privileges.  The value is completely arbitrary.
- */
-#define CACHEFLUSH_MAX_LEN	1024
-
-void invalidate_dcache_region(void *start, size_t size)
-{
-	unsigned long v, begin, end, linesz, mask;
-
-	linesz = boot_cpu_data.dcache.linesz;
-	mask = linesz - 1;
-
-	/* when first and/or last cachelines are shared, flush them
-	 * instead of invalidating ... never discard valid data!
-	 */
-	begin = (unsigned long)start;
-	end = begin + size;
-
-	if (begin & mask) {
-		flush_dcache_line(start);
-		begin += linesz;
-	}
-	if (end & mask) {
-		flush_dcache_line((void *)end);
-		end &= ~mask;
-	}
-
-	/* remaining cachelines only need invalidation */
-	for (v = begin; v < end; v += linesz)
-		invalidate_dcache_line((void *)v);
-	flush_write_buffer();
-}
-
-void clean_dcache_region(void *start, size_t size)
-{
-	unsigned long v, begin, end, linesz;
-
-	linesz = boot_cpu_data.dcache.linesz;
-	begin = (unsigned long)start & ~(linesz - 1);
-	end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1);
-
-	for (v = begin; v < end; v += linesz)
-		clean_dcache_line((void *)v);
-	flush_write_buffer();
-}
-
-void flush_dcache_region(void *start, size_t size)
-{
-	unsigned long v, begin, end, linesz;
-
-	linesz = boot_cpu_data.dcache.linesz;
-	begin = (unsigned long)start & ~(linesz - 1);
-	end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1);
-
-	for (v = begin; v < end; v += linesz)
-		flush_dcache_line((void *)v);
-	flush_write_buffer();
-}
-
-void invalidate_icache_region(void *start, size_t size)
-{
-	unsigned long v, begin, end, linesz;
-
-	linesz = boot_cpu_data.icache.linesz;
-	begin = (unsigned long)start & ~(linesz - 1);
-	end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1);
-
-	for (v = begin; v < end; v += linesz)
-		invalidate_icache_line((void *)v);
-}
-
-static inline void __flush_icache_range(unsigned long start, unsigned long end)
-{
-	unsigned long v, linesz;
-
-	linesz = boot_cpu_data.dcache.linesz;
-	for (v = start; v < end; v += linesz) {
-		clean_dcache_line((void *)v);
-		invalidate_icache_line((void *)v);
-	}
-
-	flush_write_buffer();
-}
-
-/*
- * This one is called after a module has been loaded.
- */
-void flush_icache_range(unsigned long start, unsigned long end)
-{
-	unsigned long linesz;
-
-	linesz = boot_cpu_data.dcache.linesz;
-	__flush_icache_range(start & ~(linesz - 1),
-			     (end + linesz - 1) & ~(linesz - 1));
-}
-EXPORT_SYMBOL(flush_icache_range);
-
-/*
- * This one is called from __do_fault() and do_swap_page().
- */
-void flush_icache_page(struct vm_area_struct *vma, struct page *page)
-{
-	if (vma->vm_flags & VM_EXEC) {
-		void *v = page_address(page);
-		__flush_icache_range((unsigned long)v, (unsigned long)v + PAGE_SIZE);
-	}
-}
-
-asmlinkage int sys_cacheflush(int operation, void __user *addr, size_t len)
-{
-	int ret;
-
-	if (len > CACHEFLUSH_MAX_LEN) {
-		ret = -EPERM;
-		if (!capable(CAP_SYS_ADMIN))
-			goto out;
-	}
-
-	ret = -EFAULT;
-	if (!access_ok(VERIFY_WRITE, addr, len))
-		goto out;
-
-	switch (operation) {
-	case CACHE_IFLUSH:
-		flush_icache_range((unsigned long)addr,
-				   (unsigned long)addr + len);
-		ret = 0;
-		break;
-	default:
-		ret = -EINVAL;
-	}
-
-out:
-	return ret;
-}
-
-void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
-		unsigned long vaddr, void *dst, const void *src,
-		unsigned long len)
-{
-	memcpy(dst, src, len);
-	if (vma->vm_flags & VM_EXEC)
-		flush_icache_range((unsigned long)dst,
-				(unsigned long)dst + len);
-}
diff --git a/arch/avr32/mm/clear_page.S b/arch/avr32/mm/clear_page.S
deleted file mode 100644
index 5d70dca00699..000000000000
--- a/arch/avr32/mm/clear_page.S
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/linkage.h>
-#include <asm/page.h>
-
-/*
- * clear_page
- * r12: P1 address (to)
- */
-	.text
-	.global clear_page
-clear_page:
-	sub	r9, r12, -PAGE_SIZE
-	mov     r10, 0
-	mov	r11, 0
-0:      st.d    r12++, r10
-	cp      r12, r9
-	brne	0b
-	mov     pc, lr
diff --git a/arch/avr32/mm/copy_page.S b/arch/avr32/mm/copy_page.S
deleted file mode 100644
index c2b3752946b8..000000000000
--- a/arch/avr32/mm/copy_page.S
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/linkage.h>
-#include <asm/page.h>
-
-/*
- * copy_page
- *
- * r12		to (P1 address)
- * r11		from (P1 address)
- * r8-r10	scratch
- */
-	.text
-	.global copy_page
-copy_page:
-	sub	r10, r11, -(1 << PAGE_SHIFT)
-	/* pref	r11[0] */
-1:	/* pref	r11[8] */
-	ld.d	r8, r11++
-	st.d	r12++, r8
-	cp	r11, r10
-	brlo	1b
-	mov	pc, lr
diff --git a/arch/avr32/mm/dma-coherent.c b/arch/avr32/mm/dma-coherent.c
deleted file mode 100644
index 555222d4f414..000000000000
--- a/arch/avr32/mm/dma-coherent.c
+++ /dev/null
@@ -1,202 +0,0 @@
-/*
- *  Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/dma-mapping.h>
-#include <linux/gfp.h>
-#include <linux/export.h>
-#include <linux/mm.h>
-#include <linux/device.h>
-#include <linux/scatterlist.h>
-
-#include <asm/processor.h>
-#include <asm/cacheflush.h>
-#include <asm/io.h>
-#include <asm/addrspace.h>
-
-void dma_cache_sync(struct device *dev, void *vaddr, size_t size, int direction)
-{
-	/*
-	 * No need to sync an uncached area
-	 */
-	if (PXSEG(vaddr) == P2SEG)
-		return;
-
-	switch (direction) {
-	case DMA_FROM_DEVICE:		/* invalidate only */
-		invalidate_dcache_region(vaddr, size);
-		break;
-	case DMA_TO_DEVICE:		/* writeback only */
-		clean_dcache_region(vaddr, size);
-		break;
-	case DMA_BIDIRECTIONAL:		/* writeback and invalidate */
-		flush_dcache_region(vaddr, size);
-		break;
-	default:
-		BUG();
-	}
-}
-EXPORT_SYMBOL(dma_cache_sync);
-
-static struct page *__dma_alloc(struct device *dev, size_t size,
-				dma_addr_t *handle, gfp_t gfp)
-{
-	struct page *page, *free, *end;
-	int order;
-
-	/* Following is a work-around (a.k.a. hack) to prevent pages
-	 * with __GFP_COMP being passed to split_page() which cannot
-	 * handle them.  The real problem is that this flag probably
-	 * should be 0 on AVR32 as it is not supported on this
-	 * platform--see CONFIG_HUGETLB_PAGE. */
-	gfp &= ~(__GFP_COMP);
-
-	size = PAGE_ALIGN(size);
-	order = get_order(size);
-
-	page = alloc_pages(gfp, order);
-	if (!page)
-		return NULL;
-	split_page(page, order);
-
-	/*
-	 * When accessing physical memory with valid cache data, we
-	 * get a cache hit even if the virtual memory region is marked
-	 * as uncached.
-	 *
-	 * Since the memory is newly allocated, there is no point in
-	 * doing a writeback. If the previous owner cares, he should
-	 * have flushed the cache before releasing the memory.
-	 */
-	invalidate_dcache_region(phys_to_virt(page_to_phys(page)), size);
-
-	*handle = page_to_bus(page);
-	free = page + (size >> PAGE_SHIFT);
-	end = page + (1 << order);
-
-	/*
-	 * Free any unused pages
-	 */
-	while (free < end) {
-		__free_page(free);
-		free++;
-	}
-
-	return page;
-}
-
-static void __dma_free(struct device *dev, size_t size,
-		       struct page *page, dma_addr_t handle)
-{
-	struct page *end = page + (PAGE_ALIGN(size) >> PAGE_SHIFT);
-
-	while (page < end)
-		__free_page(page++);
-}
-
-static void *avr32_dma_alloc(struct device *dev, size_t size,
-		dma_addr_t *handle, gfp_t gfp, unsigned long attrs)
-{
-	struct page *page;
-	dma_addr_t phys;
-
-	page = __dma_alloc(dev, size, handle, gfp);
-	if (!page)
-		return NULL;
-	phys = page_to_phys(page);
-
-	if (attrs & DMA_ATTR_WRITE_COMBINE) {
-		/* Now, map the page into P3 with write-combining turned on */
-		*handle = phys;
-		return __ioremap(phys, size, _PAGE_BUFFER);
-	} else {
-		return phys_to_uncached(phys);
-	}
-}
-
-static void avr32_dma_free(struct device *dev, size_t size,
-		void *cpu_addr, dma_addr_t handle, unsigned long attrs)
-{
-	struct page *page;
-
-	if (attrs & DMA_ATTR_WRITE_COMBINE) {
-		iounmap(cpu_addr);
-
-		page = phys_to_page(handle);
-	} else {
-		void *addr = phys_to_cached(uncached_to_phys(cpu_addr));
-
-		pr_debug("avr32_dma_free addr %p (phys %08lx) size %u\n",
-			 cpu_addr, (unsigned long)handle, (unsigned)size);
-
-		BUG_ON(!virt_addr_valid(addr));
-		page = virt_to_page(addr);
-	}
-
-	__dma_free(dev, size, page, handle);
-}
-
-static dma_addr_t avr32_dma_map_page(struct device *dev, struct page *page,
-		unsigned long offset, size_t size,
-		enum dma_data_direction direction, unsigned long attrs)
-{
-	void *cpu_addr = page_address(page) + offset;
-
-	if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
-		dma_cache_sync(dev, cpu_addr, size, direction);
-	return virt_to_bus(cpu_addr);
-}
-
-static int avr32_dma_map_sg(struct device *dev, struct scatterlist *sglist,
-		int nents, enum dma_data_direction direction,
-		unsigned long attrs)
-{
-	int i;
-	struct scatterlist *sg;
-
-	for_each_sg(sglist, sg, nents, i) {
-		char *virt;
-
-		sg->dma_address = page_to_bus(sg_page(sg)) + sg->offset;
-		virt = sg_virt(sg);
-
-		if (attrs & DMA_ATTR_SKIP_CPU_SYNC)
-			continue;
-
-		dma_cache_sync(dev, virt, sg->length, direction);
-	}
-
-	return nents;
-}
-
-static void avr32_dma_sync_single_for_device(struct device *dev,
-		dma_addr_t dma_handle, size_t size,
-		enum dma_data_direction direction)
-{
-	dma_cache_sync(dev, bus_to_virt(dma_handle), size, direction);
-}
-
-static void avr32_dma_sync_sg_for_device(struct device *dev,
-		struct scatterlist *sglist, int nents,
-		enum dma_data_direction direction)
-{
-	int i;
-	struct scatterlist *sg;
-
-	for_each_sg(sglist, sg, nents, i)
-		dma_cache_sync(dev, sg_virt(sg), sg->length, direction);
-}
-
-const struct dma_map_ops avr32_dma_ops = {
-	.alloc			= avr32_dma_alloc,
-	.free			= avr32_dma_free,
-	.map_page		= avr32_dma_map_page,
-	.map_sg			= avr32_dma_map_sg,
-	.sync_single_for_device	= avr32_dma_sync_single_for_device,
-	.sync_sg_for_device	= avr32_dma_sync_sg_for_device,
-};
-EXPORT_SYMBOL(avr32_dma_ops);
diff --git a/arch/avr32/mm/fault.c b/arch/avr32/mm/fault.c
deleted file mode 100644
index b3977e9208a3..000000000000
--- a/arch/avr32/mm/fault.c
+++ /dev/null
@@ -1,268 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * Based on linux/arch/sh/mm/fault.c:
- *   Copyright (C) 1999  Niibe Yutaka
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/mm.h>
-#include <linux/extable.h>
-#include <linux/pagemap.h>
-#include <linux/kdebug.h>
-#include <linux/kprobes.h>
-#include <linux/uaccess.h>
-
-#include <asm/mmu_context.h>
-#include <asm/sysreg.h>
-#include <asm/tlb.h>
-
-#ifdef CONFIG_KPROBES
-static inline int notify_page_fault(struct pt_regs *regs, int trap)
-{
-	int ret = 0;
-
-	if (!user_mode(regs)) {
-		if (kprobe_running() && kprobe_fault_handler(regs, trap))
-			ret = 1;
-	}
-
-	return ret;
-}
-#else
-static inline int notify_page_fault(struct pt_regs *regs, int trap)
-{
-	return 0;
-}
-#endif
-
-int exception_trace = 1;
-
-/*
- * This routine handles page faults. It determines the address and the
- * problem, and then passes it off to one of the appropriate routines.
- *
- * ecr is the Exception Cause Register. Possible values are:
- *   6:  Protection fault (instruction access)
- *   15: Protection fault (read access)
- *   16: Protection fault (write access)
- *   20: Page not found (instruction access)
- *   24: Page not found (read access)
- *   28: Page not found (write access)
- */
-asmlinkage void do_page_fault(unsigned long ecr, struct pt_regs *regs)
-{
-	struct task_struct *tsk;
-	struct mm_struct *mm;
-	struct vm_area_struct *vma;
-	const struct exception_table_entry *fixup;
-	unsigned long address;
-	unsigned long page;
-	long signr;
-	int code;
-	int fault;
-	unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
-
-	if (notify_page_fault(regs, ecr))
-		return;
-
-	address = sysreg_read(TLBEAR);
-
-	tsk = current;
-	mm = tsk->mm;
-
-	signr = SIGSEGV;
-	code = SEGV_MAPERR;
-
-	/*
-	 * If we're in an interrupt or have no user context, we must
-	 * not take the fault...
-	 */
-	if (faulthandler_disabled() || !mm || regs->sr & SYSREG_BIT(GM))
-		goto no_context;
-
-	local_irq_enable();
-
-	if (user_mode(regs))
-		flags |= FAULT_FLAG_USER;
-retry:
-	down_read(&mm->mmap_sem);
-
-	vma = find_vma(mm, address);
-	if (!vma)
-		goto bad_area;
-	if (vma->vm_start <= address)
-		goto good_area;
-	if (!(vma->vm_flags & VM_GROWSDOWN))
-		goto bad_area;
-	if (expand_stack(vma, address))
-		goto bad_area;
-
-	/*
-	 * Ok, we have a good vm_area for this memory access, so we
-	 * can handle it...
-	 */
-good_area:
-	code = SEGV_ACCERR;
-
-	switch (ecr) {
-	case ECR_PROTECTION_X:
-	case ECR_TLB_MISS_X:
-		if (!(vma->vm_flags & VM_EXEC))
-			goto bad_area;
-		break;
-	case ECR_PROTECTION_R:
-	case ECR_TLB_MISS_R:
-		if (!(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)))
-			goto bad_area;
-		break;
-	case ECR_PROTECTION_W:
-	case ECR_TLB_MISS_W:
-		if (!(vma->vm_flags & VM_WRITE))
-			goto bad_area;
-		flags |= FAULT_FLAG_WRITE;
-		break;
-	default:
-		panic("Unhandled case %lu in do_page_fault!", ecr);
-	}
-
-	/*
-	 * If for any reason at all we couldn't handle the fault, make
-	 * sure we exit gracefully rather than endlessly redo the
-	 * fault.
-	 */
-	fault = handle_mm_fault(vma, address, flags);
-
-	if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
-		return;
-
-	if (unlikely(fault & VM_FAULT_ERROR)) {
-		if (fault & VM_FAULT_OOM)
-			goto out_of_memory;
-		else if (fault & VM_FAULT_SIGSEGV)
-			goto bad_area;
-		else if (fault & VM_FAULT_SIGBUS)
-			goto do_sigbus;
-		BUG();
-	}
-
-	if (flags & FAULT_FLAG_ALLOW_RETRY) {
-		if (fault & VM_FAULT_MAJOR)
-			tsk->maj_flt++;
-		else
-			tsk->min_flt++;
-		if (fault & VM_FAULT_RETRY) {
-			flags &= ~FAULT_FLAG_ALLOW_RETRY;
-			flags |= FAULT_FLAG_TRIED;
-
-			/*
-			 * No need to up_read(&mm->mmap_sem) as we would have
-			 * already released it in __lock_page_or_retry() in
-			 * mm/filemap.c.
-			 */
-			goto retry;
-		}
-	}
-
-	up_read(&mm->mmap_sem);
-	return;
-
-	/*
-	 * Something tried to access memory that isn't in our memory
-	 * map. Fix it, but check if it's kernel or user first...
-	 */
-bad_area:
-	up_read(&mm->mmap_sem);
-
-	if (user_mode(regs)) {
-		if (exception_trace && printk_ratelimit())
-			printk("%s%s[%d]: segfault at %08lx pc %08lx "
-			       "sp %08lx ecr %lu\n",
-			       is_global_init(tsk) ? KERN_EMERG : KERN_INFO,
-			       tsk->comm, tsk->pid, address, regs->pc,
-			       regs->sp, ecr);
-		_exception(SIGSEGV, regs, code, address);
-		return;
-	}
-
-no_context:
-	/* Are we prepared to handle this kernel fault? */
-	fixup = search_exception_tables(regs->pc);
-	if (fixup) {
-		regs->pc = fixup->fixup;
-		return;
-	}
-
-	/*
-	 * Oops. The kernel tried to access some bad page. We'll have
-	 * to terminate things with extreme prejudice.
-	 */
-	if (address < PAGE_SIZE)
-		printk(KERN_ALERT
-		       "Unable to handle kernel NULL pointer dereference");
-	else
-		printk(KERN_ALERT
-		       "Unable to handle kernel paging request");
-	printk(" at virtual address %08lx\n", address);
-
-	page = sysreg_read(PTBR);
-	printk(KERN_ALERT "ptbr = %08lx", page);
-	if (address >= TASK_SIZE)
-		page = (unsigned long)swapper_pg_dir;
-	if (page) {
-		page = ((unsigned long *)page)[address >> 22];
-		printk(" pgd = %08lx", page);
-		if (page & _PAGE_PRESENT) {
-			page &= PAGE_MASK;
-			address &= 0x003ff000;
-			page = ((unsigned long *)__va(page))[address >> PAGE_SHIFT];
-			printk(" pte = %08lx", page);
-		}
-	}
-	printk("\n");
-	die("Kernel access of bad area", regs, signr);
-	return;
-
-	/*
-	 * We ran out of memory, or some other thing happened to us
-	 * that made us unable to handle the page fault gracefully.
-	 */
-out_of_memory:
-	up_read(&mm->mmap_sem);
-	if (!user_mode(regs))
-		goto no_context;
-	pagefault_out_of_memory();
-	return;
-
-do_sigbus:
-	up_read(&mm->mmap_sem);
-
-	/* Kernel mode? Handle exceptions or die */
-	signr = SIGBUS;
-	code = BUS_ADRERR;
-	if (!user_mode(regs))
-		goto no_context;
-
-	if (exception_trace)
-		printk("%s%s[%d]: bus error at %08lx pc %08lx "
-		       "sp %08lx ecr %lu\n",
-		       is_global_init(tsk) ? KERN_EMERG : KERN_INFO,
-		       tsk->comm, tsk->pid, address, regs->pc,
-		       regs->sp, ecr);
-
-	_exception(SIGBUS, regs, BUS_ADRERR, address);
-}
-
-asmlinkage void do_bus_error(unsigned long addr, int write_access,
-			     struct pt_regs *regs)
-{
-	printk(KERN_ALERT
-	       "Bus error at physical address 0x%08lx (%s access)\n",
-	       addr, write_access ? "write" : "read");
-	printk(KERN_INFO "DTLB dump:\n");
-	dump_dtlb();
-	die("Bus Error", regs, SIGKILL);
-}
diff --git a/arch/avr32/mm/init.c b/arch/avr32/mm/init.c
deleted file mode 100644
index def5391d927a..000000000000
--- a/arch/avr32/mm/init.c
+++ /dev/null
@@ -1,125 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/gfp.h>
-#include <linux/mm.h>
-#include <linux/swap.h>
-#include <linux/init.h>
-#include <linux/mmzone.h>
-#include <linux/module.h>
-#include <linux/bootmem.h>
-#include <linux/pagemap.h>
-#include <linux/nodemask.h>
-
-#include <asm/page.h>
-#include <asm/mmu_context.h>
-#include <asm/tlb.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/setup.h>
-#include <asm/sections.h>
-
-pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned_data;
-
-struct page *empty_zero_page;
-EXPORT_SYMBOL(empty_zero_page);
-
-/*
- * Cache of MMU context last used.
- */
-unsigned long mmu_context_cache = NO_CONTEXT;
-
-/*
- * paging_init() sets up the page tables
- *
- * This routine also unmaps the page at virtual kernel address 0, so
- * that we can trap those pesky NULL-reference errors in the kernel.
- */
-void __init paging_init(void)
-{
-	extern unsigned long _evba;
-	void *zero_page;
-	int nid;
-
-	/*
-	 * Make sure we can handle exceptions before enabling
-	 * paging. Not that we should ever _get_ any exceptions this
-	 * early, but you never know...
-	 */
-	printk("Exception vectors start at %p\n", &_evba);
-	sysreg_write(EVBA, (unsigned long)&_evba);
-
-	/*
-	 * Since we are ready to handle exceptions now, we should let
-	 * the CPU generate them...
-	 */
-	__asm__ __volatile__ ("csrf %0" : : "i"(SR_EM_BIT));
-
-	/*
-	 * Allocate the zero page. The allocator will panic if it
-	 * can't satisfy the request, so no need to check.
-	 */
-	zero_page = alloc_bootmem_low_pages_node(NODE_DATA(0),
-						 PAGE_SIZE);
-
-	sysreg_write(PTBR, (unsigned long)swapper_pg_dir);
-	enable_mmu();
-	printk ("CPU: Paging enabled\n");
-
-	for_each_online_node(nid) {
-		pg_data_t *pgdat = NODE_DATA(nid);
-		unsigned long zones_size[MAX_NR_ZONES];
-		unsigned long low, start_pfn;
-
-		start_pfn = pgdat->bdata->node_min_pfn;
-		low = pgdat->bdata->node_low_pfn;
-
-		memset(zones_size, 0, sizeof(zones_size));
-		zones_size[ZONE_NORMAL] = low - start_pfn;
-
-		printk("Node %u: start_pfn = 0x%lx, low = 0x%lx\n",
-		       nid, start_pfn, low);
-
-		free_area_init_node(nid, zones_size, start_pfn, NULL);
-
-		printk("Node %u: mem_map starts at %p\n",
-		       pgdat->node_id, pgdat->node_mem_map);
-	}
-
-	mem_map = NODE_DATA(0)->node_mem_map;
-
-	empty_zero_page = virt_to_page(zero_page);
-	flush_dcache_page(empty_zero_page);
-}
-
-void __init mem_init(void)
-{
-	pg_data_t *pgdat;
-
-	high_memory = NULL;
-	for_each_online_pgdat(pgdat)
-		high_memory = max_t(void *, high_memory,
-				    __va(pgdat_end_pfn(pgdat) << PAGE_SHIFT));
-
-	set_max_mapnr(MAP_NR(high_memory));
-	free_all_bootmem();
-	mem_init_print_info(NULL);
-}
-
-void free_initmem(void)
-{
-	free_initmem_default(-1);
-}
-
-#ifdef CONFIG_BLK_DEV_INITRD
-void free_initrd_mem(unsigned long start, unsigned long end)
-{
-	free_reserved_area((void *)start, (void *)end, -1, "initrd");
-}
-#endif
diff --git a/arch/avr32/mm/ioremap.c b/arch/avr32/mm/ioremap.c
deleted file mode 100644
index 7def0d84cec6..000000000000
--- a/arch/avr32/mm/ioremap.c
+++ /dev/null
@@ -1,93 +0,0 @@
-/*
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/vmalloc.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-
-#include <asm/pgtable.h>
-#include <asm/addrspace.h>
-
-/*
- * Re-map an arbitrary physical address space into the kernel virtual
- * address space. Needed when the kernel wants to access physical
- * memory directly.
- */
-void __iomem *__ioremap(unsigned long phys_addr, size_t size,
-			unsigned long flags)
-{
-	unsigned long addr;
-	struct vm_struct *area;
-	unsigned long offset, last_addr;
-	pgprot_t prot;
-
-	/*
-	 * Check if we can simply use the P4 segment. This area is
-	 * uncacheable, so if caching/buffering is requested, we can't
-	 * use it.
-	 */
-	if ((phys_addr >= P4SEG) && (flags == 0))
-		return (void __iomem *)phys_addr;
-
-	/* Don't allow wraparound or zero size */
-	last_addr = phys_addr + size - 1;
-	if (!size || last_addr < phys_addr)
-		return NULL;
-
-	/*
-	 * XXX: When mapping regular RAM, we'd better make damn sure
-	 * it's never used for anything else.  But this is really the
-	 * caller's responsibility...
-	 */
-	if (PHYSADDR(P2SEGADDR(phys_addr)) == phys_addr)
-		return (void __iomem *)P2SEGADDR(phys_addr);
-
-	/* Mappings have to be page-aligned */
-	offset = phys_addr & ~PAGE_MASK;
-	phys_addr &= PAGE_MASK;
-	size = PAGE_ALIGN(last_addr + 1) - phys_addr;
-
-	prot = __pgprot(_PAGE_PRESENT | _PAGE_GLOBAL | _PAGE_RW | _PAGE_DIRTY
-			| _PAGE_ACCESSED | _PAGE_TYPE_SMALL | flags);
-
-	/*
-	 * Ok, go for it..
-	 */
-	area = get_vm_area(size, VM_IOREMAP);
-	if (!area)
-		return NULL;
-	area->phys_addr = phys_addr;
-	addr = (unsigned long )area->addr;
-	if (ioremap_page_range(addr, addr + size, phys_addr, prot)) {
-		vunmap((void *)addr);
-		return NULL;
-	}
-
-	return (void __iomem *)(offset + (char *)addr);
-}
-EXPORT_SYMBOL(__ioremap);
-
-void __iounmap(void __iomem *addr)
-{
-	struct vm_struct *p;
-
-	if ((unsigned long)addr >= P4SEG)
-		return;
-	if (PXSEG(addr) == P2SEG)
-		return;
-
-	p = remove_vm_area((void *)(PAGE_MASK & (unsigned long __force)addr));
-	if (unlikely(!p)) {
-		printk (KERN_ERR "iounmap: bad address %p\n", addr);
-		return;
-	}
-
-	kfree (p);
-}
-EXPORT_SYMBOL(__iounmap);
diff --git a/arch/avr32/mm/tlb.c b/arch/avr32/mm/tlb.c
deleted file mode 100644
index 0da23109f817..000000000000
--- a/arch/avr32/mm/tlb.c
+++ /dev/null
@@ -1,375 +0,0 @@
-/*
- * AVR32 TLB operations
- *
- * Copyright (C) 2004-2006 Atmel Corporation
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/mm.h>
-
-#include <asm/mmu_context.h>
-
-/* TODO: Get the correct number from the CONFIG1 system register */
-#define NR_TLB_ENTRIES 32
-
-static void show_dtlb_entry(unsigned int index)
-{
-	u32 tlbehi, tlbehi_save, tlbelo, mmucr, mmucr_save;
-	unsigned long flags;
-
-	local_irq_save(flags);
-	mmucr_save = sysreg_read(MMUCR);
-	tlbehi_save = sysreg_read(TLBEHI);
-	mmucr = SYSREG_BFINS(DRP, index, mmucr_save);
-	sysreg_write(MMUCR, mmucr);
-
-	__builtin_tlbr();
-	cpu_sync_pipeline();
-
-	tlbehi = sysreg_read(TLBEHI);
-	tlbelo = sysreg_read(TLBELO);
-
-	printk("%2u: %c %c %02x   %05x %05x %o  %o  %c %c %c %c\n",
-	       index,
-	       SYSREG_BFEXT(TLBEHI_V, tlbehi) ? '1' : '0',
-	       SYSREG_BFEXT(G, tlbelo) ? '1' : '0',
-	       SYSREG_BFEXT(ASID, tlbehi),
-	       SYSREG_BFEXT(VPN, tlbehi) >> 2,
-	       SYSREG_BFEXT(PFN, tlbelo) >> 2,
-	       SYSREG_BFEXT(AP, tlbelo),
-	       SYSREG_BFEXT(SZ, tlbelo),
-	       SYSREG_BFEXT(TLBELO_C, tlbelo) ? 'C' : ' ',
-	       SYSREG_BFEXT(B, tlbelo) ? 'B' : ' ',
-	       SYSREG_BFEXT(W, tlbelo) ? 'W' : ' ',
-	       SYSREG_BFEXT(TLBELO_D, tlbelo) ? 'D' : ' ');
-
-	sysreg_write(MMUCR, mmucr_save);
-	sysreg_write(TLBEHI, tlbehi_save);
-	cpu_sync_pipeline();
-	local_irq_restore(flags);
-}
-
-void dump_dtlb(void)
-{
-	unsigned int i;
-
-	printk("ID  V G ASID VPN   PFN   AP SZ C B W D\n");
-	for (i = 0; i < NR_TLB_ENTRIES; i++)
-		show_dtlb_entry(i);
-}
-
-static void update_dtlb(unsigned long address, pte_t pte)
-{
-	u32 tlbehi;
-	u32 mmucr;
-
-	/*
-	 * We're not changing the ASID here, so no need to flush the
-	 * pipeline.
-	 */
-	tlbehi = sysreg_read(TLBEHI);
-	tlbehi = SYSREG_BF(ASID, SYSREG_BFEXT(ASID, tlbehi));
-	tlbehi |= address & MMU_VPN_MASK;
-	tlbehi |= SYSREG_BIT(TLBEHI_V);
-	sysreg_write(TLBEHI, tlbehi);
-
-	/* Does this mapping already exist? */
-	__builtin_tlbs();
-	mmucr = sysreg_read(MMUCR);
-
-	if (mmucr & SYSREG_BIT(MMUCR_N)) {
-		/* Not found -- pick a not-recently-accessed entry */
-		unsigned int rp;
-		u32 tlbar = sysreg_read(TLBARLO);
-
-		rp = 32 - fls(tlbar);
-		if (rp == 32) {
-			rp = 0;
-			sysreg_write(TLBARLO, -1L);
-		}
-
-		mmucr = SYSREG_BFINS(DRP, rp, mmucr);
-		sysreg_write(MMUCR, mmucr);
-	}
-
-	sysreg_write(TLBELO, pte_val(pte) & _PAGE_FLAGS_HARDWARE_MASK);
-
-	/* Let's go */
-	__builtin_tlbw();
-}
-
-void update_mmu_cache(struct vm_area_struct *vma,
-		      unsigned long address, pte_t *ptep)
-{
-	unsigned long flags;
-
-	/* ptrace may call this routine */
-	if (vma && current->active_mm != vma->vm_mm)
-		return;
-
-	local_irq_save(flags);
-	update_dtlb(address, *ptep);
-	local_irq_restore(flags);
-}
-
-static void __flush_tlb_page(unsigned long asid, unsigned long page)
-{
-	u32 mmucr, tlbehi;
-
-	/*
-	 * Caller is responsible for masking out non-PFN bits in page
-	 * and changing the current ASID if necessary. This means that
-	 * we don't need to flush the pipeline after writing TLBEHI.
-	 */
-	tlbehi = page | asid;
-	sysreg_write(TLBEHI, tlbehi);
-
-	__builtin_tlbs();
-	mmucr = sysreg_read(MMUCR);
-
-	if (!(mmucr & SYSREG_BIT(MMUCR_N))) {
-		unsigned int entry;
-		u32 tlbarlo;
-
-		/* Clear the "valid" bit */
-		sysreg_write(TLBEHI, tlbehi);
-
-		/* mark the entry as "not accessed" */
-		entry = SYSREG_BFEXT(DRP, mmucr);
-		tlbarlo = sysreg_read(TLBARLO);
-		tlbarlo |= (0x80000000UL >> entry);
-		sysreg_write(TLBARLO, tlbarlo);
-
-		/* update the entry with valid bit clear */
-		__builtin_tlbw();
-	}
-}
-
-void flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
-{
-	if (vma->vm_mm && vma->vm_mm->context != NO_CONTEXT) {
-		unsigned long flags, asid;
-		unsigned long saved_asid = MMU_NO_ASID;
-
-		asid = vma->vm_mm->context & MMU_CONTEXT_ASID_MASK;
-		page &= PAGE_MASK;
-
-		local_irq_save(flags);
-		if (vma->vm_mm != current->mm) {
-			saved_asid = get_asid();
-			set_asid(asid);
-		}
-
-		__flush_tlb_page(asid, page);
-
-		if (saved_asid != MMU_NO_ASID)
-			set_asid(saved_asid);
-		local_irq_restore(flags);
-	}
-}
-
-void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
-		     unsigned long end)
-{
-	struct mm_struct *mm = vma->vm_mm;
-
-	if (mm->context != NO_CONTEXT) {
-		unsigned long flags;
-		int size;
-
-		local_irq_save(flags);
-		size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
-
-		if (size > (MMU_DTLB_ENTRIES / 4)) { /* Too many entries to flush */
-			mm->context = NO_CONTEXT;
-			if (mm == current->mm)
-				activate_context(mm);
-		} else {
-			unsigned long asid;
-			unsigned long saved_asid;
-
-			asid = mm->context & MMU_CONTEXT_ASID_MASK;
-			saved_asid = MMU_NO_ASID;
-
-			start &= PAGE_MASK;
-			end += (PAGE_SIZE - 1);
-			end &= PAGE_MASK;
-
-			if (mm != current->mm) {
-				saved_asid = get_asid();
-				set_asid(asid);
-			}
-
-			while (start < end) {
-				__flush_tlb_page(asid, start);
-				start += PAGE_SIZE;
-			}
-			if (saved_asid != MMU_NO_ASID)
-				set_asid(saved_asid);
-		}
-		local_irq_restore(flags);
-	}
-}
-
-/*
- * This function depends on the pages to be flushed having the G
- * (global) bit set in their pte. This is true for all
- * PAGE_KERNEL(_RO) pages.
- */
-void flush_tlb_kernel_range(unsigned long start, unsigned long end)
-{
-	unsigned long flags;
-	int size;
-
-	size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT;
-	if (size > (MMU_DTLB_ENTRIES / 4)) { /* Too many entries to flush */
-		flush_tlb_all();
-	} else {
-		unsigned long asid;
-
-		local_irq_save(flags);
-		asid = get_asid();
-
-		start &= PAGE_MASK;
-		end += (PAGE_SIZE - 1);
-		end &= PAGE_MASK;
-
-		while (start < end) {
-			__flush_tlb_page(asid, start);
-			start += PAGE_SIZE;
-		}
-		local_irq_restore(flags);
-	}
-}
-
-void flush_tlb_mm(struct mm_struct *mm)
-{
-	/* Invalidate all TLB entries of this process by getting a new ASID */
-	if (mm->context != NO_CONTEXT) {
-		unsigned long flags;
-
-		local_irq_save(flags);
-		mm->context = NO_CONTEXT;
-		if (mm == current->mm)
-			activate_context(mm);
-		local_irq_restore(flags);
-	}
-}
-
-void flush_tlb_all(void)
-{
-	unsigned long flags;
-
-	local_irq_save(flags);
-	sysreg_write(MMUCR, sysreg_read(MMUCR) | SYSREG_BIT(MMUCR_I));
-	local_irq_restore(flags);
-}
-
-#ifdef CONFIG_PROC_FS
-
-#include <linux/seq_file.h>
-#include <linux/proc_fs.h>
-#include <linux/init.h>
-
-static void *tlb_start(struct seq_file *tlb, loff_t *pos)
-{
-	static unsigned long tlb_index;
-
-	if (*pos >= NR_TLB_ENTRIES)
-		return NULL;
-
-	tlb_index = 0;
-	return &tlb_index;
-}
-
-static void *tlb_next(struct seq_file *tlb, void *v, loff_t *pos)
-{
-	unsigned long *index = v;
-
-	if (*index >= NR_TLB_ENTRIES - 1)
-		return NULL;
-
-	++*pos;
-	++*index;
-	return index;
-}
-
-static void tlb_stop(struct seq_file *tlb, void *v)
-{
-
-}
-
-static int tlb_show(struct seq_file *tlb, void *v)
-{
-	unsigned int tlbehi, tlbehi_save, tlbelo, mmucr, mmucr_save;
-	unsigned long flags;
-	unsigned long *index = v;
-
-	if (*index == 0)
-		seq_puts(tlb, "ID  V G ASID VPN   PFN   AP SZ C B W D\n");
-
-	BUG_ON(*index >= NR_TLB_ENTRIES);
-
-	local_irq_save(flags);
-	mmucr_save = sysreg_read(MMUCR);
-	tlbehi_save = sysreg_read(TLBEHI);
-	mmucr = SYSREG_BFINS(DRP, *index, mmucr_save);
-	sysreg_write(MMUCR, mmucr);
-
-	/* TLBR might change the ASID */
-	__builtin_tlbr();
-	cpu_sync_pipeline();
-
-	tlbehi = sysreg_read(TLBEHI);
-	tlbelo = sysreg_read(TLBELO);
-
-	sysreg_write(MMUCR, mmucr_save);
-	sysreg_write(TLBEHI, tlbehi_save);
-	cpu_sync_pipeline();
-	local_irq_restore(flags);
-
-	seq_printf(tlb, "%2lu: %c %c %02x   %05x %05x %o  %o  %c %c %c %c\n",
-		   *index,
-		   SYSREG_BFEXT(TLBEHI_V, tlbehi) ? '1' : '0',
-		   SYSREG_BFEXT(G, tlbelo) ? '1' : '0',
-		   SYSREG_BFEXT(ASID, tlbehi),
-		   SYSREG_BFEXT(VPN, tlbehi) >> 2,
-		   SYSREG_BFEXT(PFN, tlbelo) >> 2,
-		   SYSREG_BFEXT(AP, tlbelo),
-		   SYSREG_BFEXT(SZ, tlbelo),
-		   SYSREG_BFEXT(TLBELO_C, tlbelo) ? '1' : '0',
-		   SYSREG_BFEXT(B, tlbelo) ? '1' : '0',
-		   SYSREG_BFEXT(W, tlbelo) ? '1' : '0',
-		   SYSREG_BFEXT(TLBELO_D, tlbelo) ? '1' : '0');
-
-	return 0;
-}
-
-static const struct seq_operations tlb_ops = {
-	.start		= tlb_start,
-	.next		= tlb_next,
-	.stop		= tlb_stop,
-	.show		= tlb_show,
-};
-
-static int tlb_open(struct inode *inode, struct file *file)
-{
-	return seq_open(file, &tlb_ops);
-}
-
-static const struct file_operations proc_tlb_operations = {
-	.open		= tlb_open,
-	.read		= seq_read,
-	.llseek		= seq_lseek,
-	.release	= seq_release,
-};
-
-static int __init proctlb_init(void)
-{
-	proc_create("tlb", 0, NULL, &proc_tlb_operations);
-	return 0;
-}
-late_initcall(proctlb_init);
-#endif /* CONFIG_PROC_FS */