From: Valmiki <valmikibow@gmail.com>
To: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: lorenzo.pieralisi@arm.com, bhelgaas@google.com, robh@kernel.org
Subject: dma-coherent property for PCIe Root
Date: Mon, 14 Sep 2020 10:53:48 +0530 [thread overview]
Message-ID: <1512d7b5-54c6-3b87-0090-5e370955223e@gmail.com> (raw)
Hi All,
How does "dma-coherent" property will work for PCIe as RC on an
ARM SOC ?
Because the end point device drivers are the one which will request dma
buffers and Root port driver doesn't involve in data path of end point
except for handling interrupts.
How does EP DMA buffers will be hardware coherent if RC driver exposes
dma-coherent property ?
Regards,
Valmiki
next reply other threads:[~2020-09-14 5:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-14 5:23 Valmiki [this message]
2020-10-01 5:16 ` dma-coherent property for PCIe Root Jon Masters
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