linux-kernel - Re: [PATCH 36/56] microblaze

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Date:	Tue, 06 May 2008 11:16:17 +0200
From:	Michal Simek <monstr@...nam.cz>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
CC:	John Williams <john.williams@...alogix.com>,
	linux-kernel@...r.kernel.org, arnd@...db.de,
	linux-arch@...r.kernel.org, stephen.neuendorffer@...inx.com,
	John.Linn@...inx.com, matthew@....cx, will.newton@...il.com,
	drepper@...hat.com, microblaze-uclinux@...e.uq.edu.au,
	grant.likely@...retlab.ca, Michal Simek <monstr@...str.eu>
Subject: Re: [PATCH 36/56] microblaze_v2: dma support

Hi Geert,

> On Mon, 5 May 2008, John Williams wrote:
>>> +++ b/include/asm-microblaze/scatterlist.h
>>> @@ -0,0 +1,21 @@
>>> +/*
>>> + * include/asm-microblaze/scatterlist.h
>>> + *
>>> + * 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) 2006 Atmark Techno, Inc.
>>> + */
>>> +
>>> +#ifndef _ASM_MICROBLAZE_SCATTERLIST_H
>>> +#define _ASM_MICROBLAZE_SCATTERLIST_H
>>> +
>>> +struct scatterlist {
>>> +	unsigned long page_link;
>>> +	unsigned int	offset;
>>> +	dma_addr_t	dma_address;
>>> +	unsigned int	length;
>>> +};
>>> +
>>> +#endif /* _ASM_MICROBLAZE_SCATTERLIST_H */
>> Is this worthy of promotion to asm-generic/scatterlist.h?
> 
> after moving dma_address one position up in the structure, as dma_addr_t may be
> 64-bit?

dma_addr_t is defined in types.h. If your arch want to use 64bit addr, you can
define it in types.h.

I keep scatterlist.h in asm-microblaze. Adding to asm-generic later.

Michal
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