Merge "drivers: Add dma-removed dma_ops"

			   attribute_container.o transport_class.o \

			   topology.o

obj-$(CONFIG_DEVTMPFS)	+= devtmpfs.o

obj-$(CONFIG_CMA) += dma-contiguous.o

obj-$(CONFIG_CMA) += dma-contiguous.o dma-removed.o

obj-y			+= power/

obj-$(CONFIG_HAS_DMA)	+= dma-mapping.o

obj-$(CONFIG_HAVE_GENERIC_DMA_COHERENT) += dma-coherent.o

/*

 *

 *  Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.

 *  Copyright (C) 2000-2004 Russell King

 *

 * 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/mm.h>

#include <linux/gfp.h>

#include <linux/errno.h>

#include <linux/list.h>

#include <linux/init.h>

#include <linux/device.h>

#include <linux/dma-mapping.h>

#include <linux/dma-contiguous.h>

#include <linux/highmem.h>

#include <linux/memblock.h>

#include <linux/slab.h>

#include <linux/iommu.h>

#include <linux/io.h>

#include <linux/vmalloc.h>

#include <linux/sizes.h>

#define NO_KERNEL_MAPPING_DUMMY	0x2222

void *removed_alloc(struct device *dev, size_t size, dma_addr_t *handle,

		    gfp_t gfp, struct dma_attrs *attrs)

{

	bool no_kernel_mapping = dma_get_attr(DMA_ATTR_NO_KERNEL_MAPPING,

					attrs);

	unsigned long pfn;

	unsigned long order = get_order(size);

	void *addr = NULL;

	size = PAGE_ALIGN(size);

	if (!(gfp & __GFP_WAIT))

		return NULL;

	pfn = dma_alloc_from_contiguous(dev, size >> PAGE_SHIFT, order);

	if (pfn) {

		addr = ioremap(__pfn_to_phys(pfn), size);

		memset(addr, 0, size);

		if (no_kernel_mapping) {

			iounmap(addr);

			addr = (void *)NO_KERNEL_MAPPING_DUMMY;

		}

		if (addr)

			*handle = __pfn_to_phys(pfn);

	}

	return addr;

}

int removed_mmap(struct device *dev, struct vm_area_struct *vma,

		 void *cpu_addr, dma_addr_t dma_addr, size_t size,

		 struct dma_attrs *attrs)

{

	return -ENXIO;

}

void removed_free(struct device *dev, size_t size, void *cpu_addr,

		  dma_addr_t handle, struct dma_attrs *attrs)

{

	bool no_kernel_mapping = dma_get_attr(DMA_ATTR_NO_KERNEL_MAPPING,

					attrs);

	if (!no_kernel_mapping)

		iounmap(cpu_addr);

	dma_release_from_contiguous(dev, __phys_to_pfn(handle),

					size >> PAGE_SHIFT);

}

static dma_addr_t removed_map_page(struct device *dev, struct page *page,

			unsigned long offset, size_t size,

			enum dma_data_direction dir,

			struct dma_attrs *attrs)

{

	return ~(dma_addr_t)0;

}

static void removed_unmap_page(struct device *dev, dma_addr_t dma_handle,

		size_t size, enum dma_data_direction dir,

		struct dma_attrs *attrs)

{

	return;

}

static int removed_map_sg(struct device *dev, struct scatterlist *sg,

			int nents, enum dma_data_direction dir,

			struct dma_attrs *attrs)

{

	return 0;

}

static void removed_unmap_sg(struct device *dev,

			struct scatterlist *sg, int nents,

			enum dma_data_direction dir,

			struct dma_attrs *attrs)

{

	return;

}

static void removed_sync_single_for_cpu(struct device *dev,

			dma_addr_t dma_handle, size_t size,

			enum dma_data_direction dir)

{

	return;

}

void removed_sync_single_for_device(struct device *dev,

			dma_addr_t dma_handle, size_t size,

			enum dma_data_direction dir)

{

	return;

}

void removed_sync_sg_for_cpu(struct device *dev,

			struct scatterlist *sg, int nents,

			enum dma_data_direction dir)

{

	return;

}

void removed_sync_sg_for_device(struct device *dev,

			struct scatterlist *sg, int nents,

			enum dma_data_direction dir)

{

	return;

}

struct dma_map_ops removed_dma_ops = {

	.alloc			= removed_alloc,

	.free			= removed_free,

	.mmap			= removed_mmap,

	.map_page		= removed_map_page,

	.unmap_page		= removed_unmap_page,

	.map_sg			= removed_map_sg,

	.unmap_sg		= removed_unmap_sg,

	.sync_single_for_cpu	= removed_sync_single_for_cpu,

	.sync_single_for_device	= removed_sync_single_for_device,

	.sync_sg_for_cpu	= removed_sync_sg_for_cpu,

	.sync_sg_for_device	= removed_sync_sg_for_device,

};

EXPORT_SYMBOL(removed_dma_ops);

/*

 * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * only version 2 as published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 */

#include <linux/dma-mapping.h>

extern struct dma_map_ops removed_dma_ops;