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-rw-r--r--arch/c6x/kernel/dma.c149
1 files changed, 0 insertions, 149 deletions
diff --git a/arch/c6x/kernel/dma.c b/arch/c6x/kernel/dma.c
deleted file mode 100644
index 9fff8be75f58..000000000000
--- a/arch/c6x/kernel/dma.c
+++ /dev/null
@@ -1,149 +0,0 @@
-/*
- * Copyright (C) 2011 Texas Instruments Incorporated
- * Author: Mark Salter <msalter@redhat.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.
- */
-#include <linux/module.h>
-#include <linux/dma-mapping.h>
-#include <linux/mm.h>
-#include <linux/mm_types.h>
-#include <linux/scatterlist.h>
-
-#include <asm/cacheflush.h>
-
-static void c6x_dma_sync(dma_addr_t handle, size_t size,
- enum dma_data_direction dir)
-{
- unsigned long paddr = handle;
-
- BUG_ON(!valid_dma_direction(dir));
-
- switch (dir) {
- case DMA_FROM_DEVICE:
- L2_cache_block_invalidate(paddr, paddr + size);
- break;
- case DMA_TO_DEVICE:
- L2_cache_block_writeback(paddr, paddr + size);
- break;
- case DMA_BIDIRECTIONAL:
- L2_cache_block_writeback_invalidate(paddr, paddr + size);
- break;
- default:
- break;
- }
-}
-
-static dma_addr_t c6x_dma_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size, enum dma_data_direction dir,
- unsigned long attrs)
-{
- dma_addr_t handle = virt_to_phys(page_address(page) + offset);
-
- if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
- c6x_dma_sync(handle, size, dir);
-
- return handle;
-}
-
-static void c6x_dma_unmap_page(struct device *dev, dma_addr_t handle,
- size_t size, enum dma_data_direction dir, unsigned long attrs)
-{
- if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
- c6x_dma_sync(handle, size, dir);
-}
-
-static int c6x_dma_map_sg(struct device *dev, struct scatterlist *sglist,
- int nents, enum dma_data_direction dir, unsigned long attrs)
-{
- struct scatterlist *sg;
- int i;
-
- for_each_sg(sglist, sg, nents, i) {
- sg->dma_address = sg_phys(sg);
- if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC))
- c6x_dma_sync(sg->dma_address, sg->length, dir);
- }
-
- return nents;
-}
-
-static void c6x_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
- int nents, enum dma_data_direction dir, unsigned long attrs)
-{
- struct scatterlist *sg;
- int i;
-
- if (attrs & DMA_ATTR_SKIP_CPU_SYNC)
- return;
-
- for_each_sg(sglist, sg, nents, i)
- c6x_dma_sync(sg_dma_address(sg), sg->length, dir);
-}
-
-static void c6x_dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle,
- size_t size, enum dma_data_direction dir)
-{
- c6x_dma_sync(handle, size, dir);
-
-}
-
-static void c6x_dma_sync_single_for_device(struct device *dev,
- dma_addr_t handle, size_t size, enum dma_data_direction dir)
-{
- c6x_dma_sync(handle, size, dir);
-
-}
-
-static void c6x_dma_sync_sg_for_cpu(struct device *dev,
- struct scatterlist *sglist, int nents,
- enum dma_data_direction dir)
-{
- struct scatterlist *sg;
- int i;
-
- for_each_sg(sglist, sg, nents, i)
- c6x_dma_sync_single_for_cpu(dev, sg_dma_address(sg),
- sg->length, dir);
-
-}
-
-static void c6x_dma_sync_sg_for_device(struct device *dev,
- struct scatterlist *sglist, int nents,
- enum dma_data_direction dir)
-{
- struct scatterlist *sg;
- int i;
-
- for_each_sg(sglist, sg, nents, i)
- c6x_dma_sync_single_for_device(dev, sg_dma_address(sg),
- sg->length, dir);
-
-}
-
-const struct dma_map_ops c6x_dma_ops = {
- .alloc = c6x_dma_alloc,
- .free = c6x_dma_free,
- .map_page = c6x_dma_map_page,
- .unmap_page = c6x_dma_unmap_page,
- .map_sg = c6x_dma_map_sg,
- .unmap_sg = c6x_dma_unmap_sg,
- .sync_single_for_device = c6x_dma_sync_single_for_device,
- .sync_single_for_cpu = c6x_dma_sync_single_for_cpu,
- .sync_sg_for_device = c6x_dma_sync_sg_for_device,
- .sync_sg_for_cpu = c6x_dma_sync_sg_for_cpu,
-};
-EXPORT_SYMBOL(c6x_dma_ops);
-
-/* Number of entries preallocated for DMA-API debugging */
-#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16)
-
-static int __init dma_init(void)
-{
- dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES);
-
- return 0;
-}
-fs_initcall(dma_init);