b920de1b77
Add architecture support for the MN10300/AM33 CPUs produced by MEI to the kernel. This patch also adds board support for the ASB2303 with the ASB2308 daughter board, and the ASB2305. The only processor supported is the MN103E010, which is an AM33v2 core plus on-chip devices. [akpm@linux-foundation.org: nuke cvs control strings] Signed-off-by: Masakazu Urade <urade.masakazu@jp.panasonic.com> Signed-off-by: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
46 lines
1.4 KiB
C
46 lines
1.4 KiB
C
/* MN10300 Scatterlist definitions
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*
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* Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd.
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#ifndef _ASM_SCATTERLIST_H
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#define _ASM_SCATTERLIST_H
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#include <asm/types.h>
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/*
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* Drivers must set either ->address or (preferred) page and ->offset
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* to indicate where data must be transferred to/from.
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*
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* Using page is recommended since it handles highmem data as well as
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* low mem. ->address is restricted to data which has a virtual mapping, and
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* it will go away in the future. Updating to page can be automated very
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* easily -- something like
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*
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* sg->address = some_ptr;
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*
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* can be rewritten as
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*
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* sg_set_page(virt_to_page(some_ptr));
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* sg->offset = (unsigned long) some_ptr & ~PAGE_MASK;
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*
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* and that's it. There's no excuse for not highmem enabling YOUR driver. /jens
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*/
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struct scatterlist {
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#ifdef CONFIG_DEBUG_SG
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unsigned long sg_magic;
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#endif
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unsigned long page_link;
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unsigned int offset; /* for highmem, page offset */
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dma_addr_t dma_address;
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unsigned int length;
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};
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#define ISA_DMA_THRESHOLD (0x00ffffff)
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#endif /* _ASM_SCATTERLIST_H */
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