[MIPS] Unify dma-{coherent,noncoherent.ip27,ip32}

Platforms will now have to supply a function dma_device_is_coherent which
returns if a particular device participates in the coherence domain.  For
most platforms this function will always return 0 or 1.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 0 insertions, 254 deletions

diff --git a/arch/mips/mm/dma-coherent.c b/arch/mips/mm/dma-coherent.c
deleted file mode 100644
index 5697c6e250a3..000000000000
--- a/arch/mips/mm/dma-coherent.c
+++ /dev/null
@@ -1,254 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2000  Ani Joshi <ajoshi@unixbox.com>
- * Copyright (C) 2000, 2001  Ralf Baechle <ralf@gnu.org>
- * swiped from i386, and cloned for MIPS by Geert, polished by Ralf.
- */
-#include <linux/types.h>
-#include <linux/dma-mapping.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/string.h>
-
-#include <asm/cache.h>
-#include <asm/io.h>
-
-void *dma_alloc_noncoherent(struct device *dev, size_t size,
-	dma_addr_t * dma_handle, gfp_t gfp)
-{
-	void *ret;
-	/* ignore region specifiers */
-	gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
-
-	if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
-		gfp |= GFP_DMA;
-	ret = (void *) __get_free_pages(gfp, get_order(size));
-
-	if (ret != NULL) {
-		memset(ret, 0, size);
-		*dma_handle = virt_to_phys(ret);
-	}
-
-	return ret;
-}
-
-EXPORT_SYMBOL(dma_alloc_noncoherent);
-
-void *dma_alloc_coherent(struct device *dev, size_t size,
-	dma_addr_t * dma_handle, gfp_t gfp)
-	__attribute__((alias("dma_alloc_noncoherent")));
-
-EXPORT_SYMBOL(dma_alloc_coherent);
-
-void dma_free_noncoherent(struct device *dev, size_t size, void *vaddr,
-	dma_addr_t dma_handle)
-{
-	unsigned long addr = (unsigned long) vaddr;
-
-	free_pages(addr, get_order(size));
-}
-
-EXPORT_SYMBOL(dma_free_noncoherent);
-
-void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
-	dma_addr_t dma_handle) __attribute__((alias("dma_free_noncoherent")));
-
-EXPORT_SYMBOL(dma_free_coherent);
-
-dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
-	enum dma_data_direction direction)
-{
-	BUG_ON(direction == DMA_NONE);
-
-	return __pa(ptr);
-}
-
-EXPORT_SYMBOL(dma_map_single);
-
-void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
-		 enum dma_data_direction direction)
-{
-	BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_unmap_single);
-
-int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
-	enum dma_data_direction direction)
-{
-	int i;
-
-	BUG_ON(direction == DMA_NONE);
-
-	for (i = 0; i < nents; i++, sg++) {
-		sg->dma_address = (dma_addr_t)page_to_phys(sg->page) + sg->offset;
-	}
-
-	return nents;
-}
-
-EXPORT_SYMBOL(dma_map_sg);
-
-dma_addr_t dma_map_page(struct device *dev, struct page *page,
-	unsigned long offset, size_t size, enum dma_data_direction direction)
-{
-	BUG_ON(direction == DMA_NONE);
-
-	return page_to_phys(page) + offset;
-}
-
-EXPORT_SYMBOL(dma_map_page);
-
-void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
-	       enum dma_data_direction direction)
-{
-	BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_unmap_page);
-
-void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
-	     enum dma_data_direction direction)
-{
-	BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_unmap_sg);
-
-void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
-	size_t size, enum dma_data_direction direction)
-{
-	BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_single_for_cpu);
-
-void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
-	size_t size, enum dma_data_direction direction)
-{
-	BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_single_for_device);
-
-void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
-		      unsigned long offset, size_t size,
-		      enum dma_data_direction direction)
-{
-	BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_single_range_for_cpu);
-
-void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
-		      unsigned long offset, size_t size,
-		      enum dma_data_direction direction)
-{
-	BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_single_range_for_device);
-
-void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
-		 enum dma_data_direction direction)
-{
-	BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_sg_for_cpu);
-
-void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
-		 enum dma_data_direction direction)
-{
-	BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_sync_sg_for_device);
-
-int dma_mapping_error(dma_addr_t dma_addr)
-{
-	return 0;
-}
-
-EXPORT_SYMBOL(dma_mapping_error);
-
-int 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;
-}
-
-EXPORT_SYMBOL(dma_supported);
-
-int dma_is_consistent(struct device *dev, dma_addr_t dma_addr)
-{
-	return 1;
-}
-
-EXPORT_SYMBOL(dma_is_consistent);
-
-void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
-	       enum dma_data_direction direction)
-{
-	BUG_ON(direction == DMA_NONE);
-}
-
-EXPORT_SYMBOL(dma_cache_sync);
-
-/* The DAC routines are a PCIism.. */
-
-#ifdef CONFIG_PCI
-
-#include <linux/pci.h>
-
-dma64_addr_t pci_dac_page_to_dma(struct pci_dev *pdev,
-	struct page *page, unsigned long offset, int direction)
-{
-	return (dma64_addr_t)page_to_phys(page) + offset;
-}
-
-EXPORT_SYMBOL(pci_dac_page_to_dma);
-
-struct page *pci_dac_dma_to_page(struct pci_dev *pdev,
-	dma64_addr_t dma_addr)
-{
-	return mem_map + (dma_addr >> PAGE_SHIFT);
-}
-
-EXPORT_SYMBOL(pci_dac_dma_to_page);
-
-unsigned long pci_dac_dma_to_offset(struct pci_dev *pdev,
-	dma64_addr_t dma_addr)
-{
-	return dma_addr & ~PAGE_MASK;
-}
-
-EXPORT_SYMBOL(pci_dac_dma_to_offset);
-
-void pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev,
-	dma64_addr_t dma_addr, size_t len, int direction)
-{
-	BUG_ON(direction == PCI_DMA_NONE);
-}
-
-EXPORT_SYMBOL(pci_dac_dma_sync_single_for_cpu);
-
-void pci_dac_dma_sync_single_for_device(struct pci_dev *pdev,
-	dma64_addr_t dma_addr, size_t len, int direction)
-{
-	BUG_ON(direction == PCI_DMA_NONE);
-}
-
-EXPORT_SYMBOL(pci_dac_dma_sync_single_for_device);
-
-#endif /* CONFIG_PCI */