1 files changed, 0 insertions, 143 deletions
diff --git a/arch/c6x/mm/dma-coherent.c b/arch/c6x/mm/dma-coherent.c
deleted file mode 100644
index 4187e5180373..000000000000
--- a/arch/c6x/mm/dma-coherent.c
+++ /dev/null
@@ -1,143 +0,0 @@
-/*
- *  Port on Texas Instruments TMS320C6x architecture
- *
- *  Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
- *  Author: Aurelien Jacquiot <aurelien.jacquiot@ti.com>
- *
- *  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.
- *
- *  DMA uncached mapping support.
- *
- *  Using code pulled from ARM
- *  Copyright (C) 2000-2004 Russell King
- *
- */
-#include <linux/slab.h>
-#include <linux/bitmap.h>
-#include <linux/bitops.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/dma-mapping.h>
-#include <linux/memblock.h>
-
-#include <asm/page.h>
-
-/*
- * DMA coherent memory management, can be redefined using the memdma=
- * kernel command line
- */
-
-/* none by default */
-static phys_addr_t dma_base;
-static u32 dma_size;
-static u32 dma_pages;
-
-static unsigned long *dma_bitmap;
-
-/* bitmap lock */
-static DEFINE_SPINLOCK(dma_lock);
-
-/*
- * Return a DMA coherent and contiguous memory chunk from the DMA memory
- */
-static inline u32 __alloc_dma_pages(int order)
-{
-	unsigned long flags;
-	u32 pos;
-
-	spin_lock_irqsave(&dma_lock, flags);
-	pos = bitmap_find_free_region(dma_bitmap, dma_pages, order);
-	spin_unlock_irqrestore(&dma_lock, flags);
-
-	return dma_base + (pos << PAGE_SHIFT);
-}
-
-static void __free_dma_pages(u32 addr, int order)
-{
-	unsigned long flags;
-	u32 pos = (addr - dma_base) >> PAGE_SHIFT;
-
-	if (addr < dma_base || (pos + (1 << order)) >= dma_pages) {
-		printk(KERN_ERR "%s: freeing outside range.\n", __func__);
-		BUG();
-	}
-
-	spin_lock_irqsave(&dma_lock, flags);
-	bitmap_release_region(dma_bitmap, pos, order);
-	spin_unlock_irqrestore(&dma_lock, flags);
-}
-
-/*
- * Allocate DMA coherent memory space and return both the kernel
- * virtual and DMA address for that space.
- */
-void *dma_alloc_coherent(struct device *dev, size_t size,
-			 dma_addr_t *handle, gfp_t gfp)
-{
-	u32 paddr;
-	int order;
-
-	if (!dma_size || !size)
-		return NULL;
-
-	order = get_count_order(((size - 1) >> PAGE_SHIFT) + 1);
-
-	paddr = __alloc_dma_pages(order);
-
-	if (handle)
-		*handle = paddr;
-
-	if (!paddr)
-		return NULL;
-
-	return phys_to_virt(paddr);
-}
-EXPORT_SYMBOL(dma_alloc_coherent);
-
-/*
- * Free DMA coherent memory as defined by the above mapping.
- */
-void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
-		       dma_addr_t dma_handle)
-{
-	int order;
-
-	if (!dma_size || !size)
-		return;
-
-	order = get_count_order(((size - 1) >> PAGE_SHIFT) + 1);
-
-	__free_dma_pages(virt_to_phys(vaddr), order);
-}
-EXPORT_SYMBOL(dma_free_coherent);
-
-/*
- * Initialise the coherent DMA memory allocator using the given uncached region.
- */
-void __init coherent_mem_init(phys_addr_t start, u32 size)
-{
-	phys_addr_t bitmap_phys;
-
-	if (!size)
-		return;
-
-	printk(KERN_INFO
-	       "Coherent memory (DMA) region start=0x%x size=0x%x\n",
-	       start, size);
-
-	dma_base = start;
-	dma_size = size;
-
-	/* allocate bitmap */
-	dma_pages = dma_size >> PAGE_SHIFT;
-	if (dma_size & (PAGE_SIZE - 1))
-		++dma_pages;
-
-	bitmap_phys = memblock_alloc(BITS_TO_LONGS(dma_pages) * sizeof(long),
-				     sizeof(long));
-
-	dma_bitmap = phys_to_virt(bitmap_phys);
-	memset(dma_bitmap, 0, dma_pages * PAGE_SIZE);
-}