Re: [PATCH V12 3/7] dma: add Qualcomm Technologies HIDMA management driver
From: Sinan Kaya <hidden>
Date: 2016-01-15 22:47:58
Also in:
kvmarm, linux-arm-kernel, linux-arm-msm, lkml
On 1/15/2016 12:32 PM, Marc Zyngier wrote:
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Do you have a link to that? Seeing it would help to ease my concerns. The QEMU driver has not been posted yet. As far as I know, it just discovers the memory resources on the platform object and creates mappings for the guest machine only. Shanker Donthineni and Vikram Sethi will post the QEMU patch later.Then may I suggest you both synchronize your submissions? I'd really like to hear from the QEMU maintainers that they are satisfied with that side of the story as well.
The HIDMA QEMU driver is also based on VFIO platform driver in QEMU. It is not a new concept or new framework. All tried and tested solutions. The driver below is already using this feature. HIDMA is no exception. I have verified functionality of HIDMA linux driver with HIDMA QEMU driver already. https://lxr.missinglinkelectronics.com/qemu/hw/arm/sysbus-fdt.c#L67 https://lxr.missinglinkelectronics.com/qemu/hw/vfio/calxeda-xgmac.c#L18 https://lxr.missinglinkelectronics.com/qemu/include/hw/vfio/vfio-calxeda-xgmac.h -- Sinan Kaya Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project