Commit b733116f authored by Christoph Hellwig's avatar Christoph Hellwig

unicore32: remove swiotlb support

unicore32 is a bog standard 32-bit port without larger physical address
space, highmem or any other obvious addressing limitation.  There should
be no need to bounce buffer using swiotlb.
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Acked-by: default avatarGuan Xuetao <gxt@pku.edu.cn>
parent 1a0afc14
......@@ -4,6 +4,7 @@ config UNICORE32
select ARCH_HAS_DEVMEM_IS_ALLOWED
select ARCH_MIGHT_HAVE_PC_PARPORT
select ARCH_MIGHT_HAVE_PC_SERIO
select DMA_DIRECT_OPS
select HAVE_MEMBLOCK
select HAVE_GENERIC_DMA_COHERENT
select HAVE_KERNEL_GZIP
......@@ -20,7 +21,6 @@ config UNICORE32
select GENERIC_IOMAP
select MODULES_USE_ELF_REL
select NEED_DMA_MAP_STATE
select SWIOTLB
help
UniCore-32 is 32-bit Instruction Set Architecture,
including a series of low-power-consumption RISC chip
......
......@@ -4,6 +4,7 @@ generic-y += compat.h
generic-y += current.h
generic-y += device.h
generic-y += div64.h
generic-y += dma-mapping.h
generic-y += emergency-restart.h
generic-y += exec.h
generic-y += extable.h
......
/*
* linux/arch/unicore32/include/asm/dma-mapping.h
*
* Code specific to PKUnity SoC and UniCore ISA
*
* Copyright (C) 2001-2010 GUAN Xue-tao
*
* 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.
*/
#ifndef __UNICORE_DMA_MAPPING_H__
#define __UNICORE_DMA_MAPPING_H__
#include <linux/swiotlb.h>
static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
{
return &swiotlb_dma_ops;
}
#endif
......@@ -234,9 +234,6 @@ void __init bootmem_init(void)
uc32_bootmem_init(min, max_low);
#ifdef CONFIG_SWIOTLB
swiotlb_init(1);
#endif
/*
* Sparsemem tries to allocate bootmem in memory_present(),
* so must be done after the fixed reservations
......
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