mn10300: Remove the architecture

Remove the MN10300 arch as the hardware is defunct.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Masahiro Yamada <yamada.masahiro@socionext.com>
cc: linux-am33-list@redhat.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 128 deletions

diff --git a/arch/mn10300/mm/dma-alloc.c b/arch/mn10300/mm/dma-alloc.c
deleted file mode 100644
index e3910d4db102..000000000000
--- a/arch/mn10300/mm/dma-alloc.c
+++ /dev/null
@@ -1,128 +0,0 @@
-/* MN10300 Dynamic DMA mapping support
- *
- * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- * Derived from: arch/i386/kernel/pci-dma.c
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
-
-#include <linux/types.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/pci.h>
-#include <linux/gfp.h>
-#include <linux/export.h>
-#include <asm/io.h>
-
-static unsigned long pci_sram_allocated = 0xbc000000;
-
-static void *mn10300_dma_alloc(struct device *dev, size_t size,
-		dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs)
-{
-	unsigned long addr;
-	void *ret;
-
-	pr_debug("dma_alloc_coherent(%s,%zu,%x)\n",
-		 dev ? dev_name(dev) : "?", size, gfp);
-
-	if (0xbe000000 - pci_sram_allocated >= size) {
-		size = (size + 255) & ~255;
-		addr = pci_sram_allocated;
-		pci_sram_allocated += size;
-		ret = (void *) addr;
-		goto done;
-	}
-
-	if (dev == NULL || dev->coherent_dma_mask < 0xffffffff)
-		gfp |= GFP_DMA;
-
-	addr = __get_free_pages(gfp, get_order(size));
-	if (!addr)
-		return NULL;
-
-	/* map the coherent memory through the uncached memory window */
-	ret = (void *) (addr | 0x20000000);
-
-	/* fill the memory with obvious rubbish */
-	memset((void *) addr, 0xfb, size);
-
-	/* write back and evict all cache lines covering this region */
-	mn10300_dcache_flush_inv_range2(virt_to_phys((void *) addr), PAGE_SIZE);
-
-done:
-	*dma_handle = virt_to_bus((void *) addr);
-	printk("dma_alloc_coherent() = %p [%x]\n", ret, *dma_handle);
-	return ret;
-}
-
-static void mn10300_dma_free(struct device *dev, size_t size, void *vaddr,
-		dma_addr_t dma_handle, unsigned long attrs)
-{
-	unsigned long addr = (unsigned long) vaddr & ~0x20000000;
-
-	if (addr >= 0x9c000000)
-		return;
-
-	free_pages(addr, get_order(size));
-}
-
-static int mn10300_dma_map_sg(struct device *dev, struct scatterlist *sglist,
-		int nents, enum dma_data_direction direction,
-		unsigned long attrs)
-{
-	struct scatterlist *sg;
-	int i;
-
-	for_each_sg(sglist, sg, nents, i) {
-		BUG_ON(!sg_page(sg));
-
-		sg->dma_address = sg_phys(sg);
-	}
-
-	mn10300_dcache_flush_inv();
-	return nents;
-}
-
-static dma_addr_t mn10300_dma_map_page(struct device *dev, struct page *page,
-		unsigned long offset, size_t size,
-		enum dma_data_direction direction, unsigned long attrs)
-{
-	return page_to_bus(page) + offset;
-}
-
-static void mn10300_dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
-				size_t size, enum dma_data_direction direction)
-{
-	mn10300_dcache_flush_inv();
-}
-
-static void mn10300_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
-			    int nelems, enum dma_data_direction direction)
-{
-	mn10300_dcache_flush_inv();
-}
-
-static int mn10300_dma_supported(struct device *dev, u64 mask)
-{
-	/*
-	 * we fall back to GFP_DMA when the mask isn't all 1s, so we can't
-	 * guarantee allocations that must be within a tighter range than
-	 * GFP_DMA
-	 */
-	if (mask < 0x00ffffff)
-		return 0;
-	return 1;
-}
-
-const struct dma_map_ops mn10300_dma_ops = {
-	.alloc			= mn10300_dma_alloc,
-	.free			= mn10300_dma_free,
-	.map_page		= mn10300_dma_map_page,
-	.map_sg			= mn10300_dma_map_sg,
-	.sync_single_for_device	= mn10300_dma_sync_single_for_device,
-	.sync_sg_for_device	= mn10300_dma_sync_sg_for_device,
-};