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Message-ID: <20090513033027.GA13193@cynthia.pants.nu> Date: Tue, 12 May 2009 20:30:27 -0700 From: Brad Boyer <flar@...andria.com> To: Arnd Bergmann <arnd@...db.de> Cc: Alan Cox <alan@...rguk.ukuu.org.uk>, linux-kernel@...r.kernel.org, Jeff Garzik <jgarzik@...ox.com>, linux-ide@...r.kernel.org, takata@...ux-m32r.org, geert@...ux-m68k.org, linux-m68k@...ts.linux-m68k.org, ysato@...rs.sourceforge.jp Subject: Re: [PATCH] ata: libata depends on HAS_DMA On Tue, May 12, 2009 at 11:23:20AM +0200, Arnd Bergmann wrote: > Currently, the only architectures that don't set HAS_DMA are h8300, m32r > m68k (except SUN3 and Coldfire), microblaze and s390. > s390 will never get it, microblaze is currently implementing dma-mapping.h. > > The other three are still using drivers/ide instead of drivers/ata. > > One way to fix this would be to implement dma-mapping.h in h8300, m32r and > m68k and leave !HAS_DMA as the obscure s390 case (this one already can't > use ATA because of !HAS_MMIO). If I'm reading the m68k code correctly, SUN3 is the one that doesn't have DMA. It is implemented on any m68k with a standard Motorola MMU. It might be possible to get the DMA code working on a sun3, but I doubt they ever have IDE hardware. Brad Boyer flar@...andria.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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