From: pullip.cho@samsung.com (KyongHo Cho)
To: linux-arm-kernel@lists.infradead.org
Subject: [Linaro-mm-sig] [RFC 0/2] ARM: DMA-mapping & IOMMU integration
Date: Tue, 14 Jun 2011 01:00:16 +0900 [thread overview]
Message-ID: <BANLkTikkCV=rWM_Pq6t6EyVRHcWeoMPUqw@mail.gmail.com> (raw)
In-Reply-To: <20110613154033.GA29185@1n450.cable.virginmedia.net>
> FWIW, on ARMv6 and later hardware, the dma_alloc_coherent() provides
> writecombine memory (i.e. Normal Noncacheable), so no need for
> dma_alloc_writecombine(). On earlier architectures it is creating
> Strongly Ordered mappings (no writecombine).
>
Thanks.
Do you mean that dma_alloc_coherent() and dma_alloc_writecombine() are
not different
except some additional features of dma_alloc_coherent() in ARM?
next prev parent reply other threads:[~2011-06-13 16:00 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-25 7:35 [RFC 0/2] ARM: DMA-mapping & IOMMU integration Marek Szyprowski
2011-06-04 16:13 ` Ohad Ben-Cohen
2011-06-06 6:09 ` Marek Szyprowski
2011-06-13 14:12 ` KyongHo Cho
2011-06-13 15:07 ` Arnd Bergmann
2011-06-13 15:30 ` KyongHo Cho
2011-06-13 15:40 ` Catalin Marinas
2011-06-13 16:00 ` KyongHo Cho [this message]
2011-06-13 17:55 ` [Linaro-mm-sig] " Michael K. Edwards
2011-06-13 18:54 ` Jesse Barnes
2011-06-14 18:15 ` Michael K. Edwards
2011-06-14 18:21 ` Jesse Barnes
2011-06-14 19:10 ` Zach Pfeffer
2011-06-14 20:59 ` Michael K. Edwards
2011-06-13 18:01 ` Catalin Marinas
2011-06-13 15:46 ` Arnd Bergmann
2011-06-13 15:58 ` [Linaro-mm-sig] " KyongHo Cho
2011-06-14 7:46 ` Marek Szyprowski
2011-06-20 14:31 ` Subash Patel
2011-06-20 14:59 ` Marek Szyprowski
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