Messages in this thread Patch in this message | | | From | Peter Hilber <> | Subject | [RFC PATCH 4/7] firmware: arm_scmi: Add per message transport data | Date | Fri, 18 Sep 2020 18:54:41 +0200 |
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From: Igor Skalkin <igor.skalkin@opensynergy.com>
The virtio transport in this patch series can be simplified by using the scmi_xfer tx/rx buffers for data exchange with the virtio device, and for saving the message state. But the virtio transport requires prepending a transport-specific header. Also, for data exchange using virtqueues, the tx and rx buffers should not overlap.
The first step to solve the aforementioned issues is to add a transport-specific data pointer to scmi_xfer.
Co-developed-by: Peter Hilber <peter.hilber@opensynergy.com> Signed-off-by: Peter Hilber <peter.hilber@opensynergy.com> Signed-off-by: Igor Skalkin <igor.skalkin@opensynergy.com> --- drivers/firmware/arm_scmi/common.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h index 0f1540cb2d84..e3ccec954e93 100644 --- a/drivers/firmware/arm_scmi/common.h +++ b/drivers/firmware/arm_scmi/common.h @@ -131,6 +131,7 @@ struct scmi_msg { * buffer for the rx path as we use for the tx path. * @done: command message transmit completion event * @async_done: pointer to delayed response message received event completion + * @extra_data: Transport-specific private data pointer */ struct scmi_xfer { int transfer_id; @@ -139,6 +140,7 @@ struct scmi_xfer { struct scmi_msg rx; struct completion done; struct completion *async_done; + void *extra_data; }; void scmi_xfer_put(const struct scmi_handle *h, struct scmi_xfer *xfer); -- 2.25.1
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