From: jszhang@marvell.com (Jisheng Zhang)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC] implement arm64_adjust_dma_zone as arm32 does?
Date: Wed, 3 Dec 2014 17:58:55 +0800 [thread overview]
Message-ID: <20141203175855.114d6717@xhacker> (raw)
Dear Will, Catalin,
If one platform has one limitation only some banks are DMA-able, for example
0-2GB. Under arm32, we can set the dma_zone_size, then arm_adjust_dma_zone()
will set the correct dma zone for us. But under arm64, we can't do it.
Or set dma-range in dts, then use swiotlb to bounce?
Could you kindly please give one suggestion about how to handle this
situation?
Thanks in advance,
Jisheng
next reply other threads:[~2014-12-03 9:58 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-03 9:58 Jisheng Zhang [this message]
2014-12-03 10:24 ` [RFC] implement arm64_adjust_dma_zone as arm32 does? Catalin Marinas
2014-12-03 11:02 ` Jisheng Zhang
2014-12-03 12:17 ` Catalin Marinas
2014-12-03 13:46 ` Arnd Bergmann
2014-12-04 10:17 ` Jisheng Zhang
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