Re: [PATCH v2 0/6] virtio_rpmsg: make rpmsg channel configurable
From: Hugues FRUCHET
Date: Wed Feb 08 2017 - 05:25:44 EST
Acked-and-tested-by: Hugues Fruchet <hugues.fruchet@xxxxxx>
Tested on B2260 ST Platform with st-delta video decoder V4L2 kernel
On 01/31/2017 01:51 PM, Loic Pallardy wrote:
> This goal of this series is to offer more flexibility for virtio_rpmsg
> communication link configuration.
> It should be possible to tune rpmsg buffer size per Rpmsg link, to provide
> selected configuration to coprocessor, to take into account coprocessor
> specificities like memory region.
> This series introduces an optional virtio rpmsg configuration structure, which
> will be managed as an extension of struct fw_rsc_vdev present in coprocessor firmware
> resource table.
> Structure access is possible thanks to virtio get and set API.
> This structure contains the different information to tune the link between the
> host and the coprocessor.
> Patch "rpmsg: virtio_rpmsg_bus: fix sg_set_buf() when addr is not a valid
> kernel address" has the same goal as Wendy's RFC . I don't have tested
> Wendy's series with level driver buffer allocation.
> Last patch "rpmsg: virtio_rpmsg: set buffer configuration to virtio" has a
> dependency with remoteproc subdevice boot sequence as coprocessor resource
> table must be updated before coprocessor start. See 
>  http://www.spinics.net/lists/linux-remoteproc/msg00852.html
>  http://www.spinics.net/lists/linux-remoteproc/msg00826.html
> Changes from v1:
> - No more dependency with . Coprocessor firmware should wait for first kick
> indicating virtio rpmsg link ready before accessing resource table information.
> - Correct issues reported by Suman
> - Fix warnings found by checkpatch with --strict option
> Loic Pallardy (6):
> rpmsg: virtio_rpmsg: set rpmsg_buf_size customizable
> rpmsg: virtio_rpmsg_bus: fix sg_set_buf() when addr is not a valid
> kernel address
> include: virtio_rpmsg: add virtio rpmsg configuration structure
> rpmsg: virtio_rpmsg: get buffer configuration from virtio
> rpmsg: virtio_rpmsg: don't allocate buffer if provided by low level
> rpmsg: virtio_rpmsg: set buffer configuration to virtio
> drivers/rpmsg/virtio_rpmsg_bus.c | 176 +++++++++++++++++++++++++++++++------
> include/linux/rpmsg/virtio_rpmsg.h | 32 +++++++
> 2 files changed, 179 insertions(+), 29 deletions(-)
> create mode 100644 include/linux/rpmsg/virtio_rpmsg.h