Messages in this thread | | | Date | Mon, 14 Jun 2021 15:10:36 +0100 | From | Jonathan Cameron <> | Subject | Re: [PATCH v4 12/16] firmware: arm_scmi: Add message passing abstractions for transports |
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On Fri, 11 Jun 2021 17:59:33 +0100 Cristian Marussi <cristian.marussi@arm.com> wrote:
> From: Peter Hilber <peter.hilber@opensynergy.com> > > Add abstractions for future transports using message passing, such as > virtio. Derive the abstractions from the shared memory abstractions. > > Abstract the transport SDU through the opaque struct scmi_msg_payld. > Also enable the transport to determine all other required information > about the transport SDU. > > Signed-off-by: Peter Hilber <peter.hilber@opensynergy.com> > --- ... > diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h > index b783ae058c8a..fa4075336580 100644 > --- a/drivers/firmware/arm_scmi/common.h > +++ b/drivers/firmware/arm_scmi/common.h > @@ -410,6 +410,21 @@ void shmem_clear_channel(struct scmi_shared_mem __iomem *shmem); > bool shmem_poll_done(struct scmi_shared_mem __iomem *shmem, > struct scmi_xfer *xfer); > > +/* declarations for message passing transports */ > +struct scmi_msg_payld; > + > +/** Maximum overhead of message w.r.t. struct scmi_desc.max_msg_size */
Doesn't look to be kernel-doc..
> +#define SCMI_MSG_MAX_PROT_OVERHEAD (2 * sizeof(__le32))
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