Commit 90f78162 authored by Christoph Hellwig's avatar Christoph Hellwig

unicore32: use generic swiotlb_ops

These are identical to the unicore32 ops, and would also support CMA
if enabled on unicore32.
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Acked-by: default avatarChristian König <christian.koenig@amd.com>
parent 35bd5071
......@@ -12,18 +12,11 @@
#ifndef __UNICORE_DMA_MAPPING_H__
#define __UNICORE_DMA_MAPPING_H__
#ifdef __KERNEL__
#include <linux/mm_types.h>
#include <linux/scatterlist.h>
#include <linux/swiotlb.h>
extern const struct dma_map_ops swiotlb_dma_map_ops;
static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
{
return &swiotlb_dma_map_ops;
return &swiotlb_dma_ops;
}
#endif /* __KERNEL__ */
#endif
......@@ -42,6 +42,7 @@ config CPU_TLB_SINGLE_ENTRY_DISABLE
config SWIOTLB
def_bool y
select DMA_DIRECT_OPS
config IOMMU_HELPER
def_bool SWIOTLB
......
......@@ -6,8 +6,6 @@
obj-y := extable.o fault.o init.o pgd.o mmu.o
obj-y += flush.o ioremap.o
obj-$(CONFIG_SWIOTLB) += dma-swiotlb.o
obj-$(CONFIG_MODULES) += proc-syms.o
obj-$(CONFIG_ALIGNMENT_TRAP) += alignment.o
......
/*
* Contains routines needed to support swiotlb for UniCore32.
*
* Copyright (C) 2010 Guan Xuetao
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/pci.h>
#include <linux/cache.h>
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <linux/swiotlb.h>
#include <linux/bootmem.h>
#include <asm/dma.h>
static void *unicore_swiotlb_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flags,
unsigned long attrs)
{
return swiotlb_alloc_coherent(dev, size, dma_handle, flags);
}
static void unicore_swiotlb_free_coherent(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_addr,
unsigned long attrs)
{
swiotlb_free_coherent(dev, size, vaddr, dma_addr);
}
const struct dma_map_ops swiotlb_dma_map_ops = {
.alloc = unicore_swiotlb_alloc_coherent,
.free = unicore_swiotlb_free_coherent,
.map_sg = swiotlb_map_sg_attrs,
.unmap_sg = swiotlb_unmap_sg_attrs,
.dma_supported = swiotlb_dma_supported,
.map_page = swiotlb_map_page,
.unmap_page = swiotlb_unmap_page,
.sync_single_for_cpu = swiotlb_sync_single_for_cpu,
.sync_single_for_device = swiotlb_sync_single_for_device,
.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
.sync_sg_for_device = swiotlb_sync_sg_for_device,
.mapping_error = swiotlb_dma_mapping_error,
};
EXPORT_SYMBOL(swiotlb_dma_map_ops);
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