linux-kernel - [PATCH v7 13/16] firmware: arm_scmi: Add new parameter to mark

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Message-Id: <20211129191156.29322-14-cristian.marussi@arm.com>
Date:   Mon, 29 Nov 2021 19:11:53 +0000
From:   Cristian Marussi <cristian.marussi@....com>
To:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Cc:     sudeep.holla@....com, james.quinlan@...adcom.com,
        Jonathan.Cameron@...wei.com, f.fainelli@...il.com,
        etienne.carriere@...aro.org, vincent.guittot@...aro.org,
        souvik.chakravarty@....com, cristian.marussi@....com
Subject: [PATCH v7 13/16] firmware: arm_scmi: Add new parameter to mark_txdone

Add a new xfer parameter to mark_txdone transport operation which enables
the SCMI core to optionally pass back into the transport layer a reference
to the xfer descriptor that is being handled.

Signed-off-by: Cristian Marussi <cristian.marussi@....com>
---
v6 --> v7
- use __unused macro for new param in existing transports
---
 drivers/firmware/arm_scmi/common.h  | 3 ++-
 drivers/firmware/arm_scmi/driver.c  | 2 +-
 drivers/firmware/arm_scmi/mailbox.c | 3 ++-
 drivers/firmware/arm_scmi/optee.c   | 3 ++-
 drivers/firmware/arm_scmi/smc.c     | 3 ++-
 5 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h
index 97a65d5fbb1d..8ee12d6e1abe 100644
--- a/drivers/firmware/arm_scmi/common.h
+++ b/drivers/firmware/arm_scmi/common.h
@@ -381,7 +381,8 @@ struct scmi_transport_ops {
 	unsigned int (*get_max_msg)(struct scmi_chan_info *base_cinfo);
 	int (*send_message)(struct scmi_chan_info *cinfo,
 			    struct scmi_xfer *xfer);
-	void (*mark_txdone)(struct scmi_chan_info *cinfo, int ret);
+	void (*mark_txdone)(struct scmi_chan_info *cinfo, int ret,
+			    struct scmi_xfer *xfer);
 	void (*fetch_response)(struct scmi_chan_info *cinfo,
 			       struct scmi_xfer *xfer);
 	void (*fetch_notification)(struct scmi_chan_info *cinfo,
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index fd8ca72c67a1..35098555be3c 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -881,7 +881,7 @@ static int do_xfer(const struct scmi_protocol_handle *ph,
 		ret = scmi_to_linux_errno(xfer->hdr.status);
 
 	if (info->desc->ops->mark_txdone)
-		info->desc->ops->mark_txdone(cinfo, ret);
+		info->desc->ops->mark_txdone(cinfo, ret, xfer);
 
 	trace_scmi_xfer_end(xfer->transfer_id, xfer->hdr.id,
 			    xfer->hdr.protocol_id, xfer->hdr.seq, ret);
diff --git a/drivers/firmware/arm_scmi/mailbox.c b/drivers/firmware/arm_scmi/mailbox.c
index e09eb12bf421..08ff4d110beb 100644
--- a/drivers/firmware/arm_scmi/mailbox.c
+++ b/drivers/firmware/arm_scmi/mailbox.c
@@ -140,7 +140,8 @@ static int mailbox_send_message(struct scmi_chan_info *cinfo,
 	return ret;
 }
 
-static void mailbox_mark_txdone(struct scmi_chan_info *cinfo, int ret)
+static void mailbox_mark_txdone(struct scmi_chan_info *cinfo, int ret,
+				struct scmi_xfer *__unused)
 {
 	struct scmi_mailbox *smbox = cinfo->transport_info;
 
diff --git a/drivers/firmware/arm_scmi/optee.c b/drivers/firmware/arm_scmi/optee.c
index 2428032b61ca..1282b935df49 100644
--- a/drivers/firmware/arm_scmi/optee.c
+++ b/drivers/firmware/arm_scmi/optee.c
@@ -458,7 +458,8 @@ static void scmi_optee_fetch_response(struct scmi_chan_info *cinfo,
 	shmem_fetch_response(shmem, xfer);
 }
 
-static void scmi_optee_mark_txdone(struct scmi_chan_info *cinfo, int ret)
+static void scmi_optee_mark_txdone(struct scmi_chan_info *cinfo, int ret,
+				   struct scmi_xfer *__unused)
 {
 	struct scmi_optee_channel *channel = cinfo->transport_info;
 
diff --git a/drivers/firmware/arm_scmi/smc.c b/drivers/firmware/arm_scmi/smc.c
index 0fc49cb49185..9920b4639bfd 100644
--- a/drivers/firmware/arm_scmi/smc.c
+++ b/drivers/firmware/arm_scmi/smc.c
@@ -219,7 +219,8 @@ static void smc_fetch_response(struct scmi_chan_info *cinfo,
 	shmem_fetch_response(scmi_info->shmem, xfer);
 }
 
-static void smc_mark_txdone(struct scmi_chan_info *cinfo, int ret)
+static void smc_mark_txdone(struct scmi_chan_info *cinfo, int ret,
+			    struct scmi_xfer *__unused)
 {
 	struct scmi_smc *scmi_info = cinfo->transport_info;
 
-- 
2.17.1