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From: Cristian Marussi <cristian.marussi@arm.com>
To: linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	virtualization@lists.linux-foundation.org,
	virtio-dev@lists.oasis-open.org
Cc: sudeep.holla@arm.com, james.quinlan@broadcom.com,
	Jonathan.Cameron@Huawei.com, f.fainelli@gmail.com,
	etienne.carriere@linaro.org, vincent.guittot@linaro.org,
	souvik.chakravarty@arm.com, cristian.marussi@arm.com,
	igor.skalkin@opensynergy.com, peter.hilber@opensynergy.com,
	alex.bennee@linaro.org, jean-philippe@linaro.org,
	mikhail.golubev@opensynergy.com, anton.yakovlev@opensynergy.com,
	Vasyl.Vavrychuk@opensynergy.com,
	Andriy.Tryshnivskyy@opensynergy.com
Subject: [PATCH v4 10/16] firmware: arm_scmi: Add per-device transport private info
Date: Fri, 11 Jun 2021 17:59:31 +0100	[thread overview]
Message-ID: <20210611165937.701-11-cristian.marussi@arm.com> (raw)
In-Reply-To: <20210611165937.701-1-cristian.marussi@arm.com>

From: Peter Hilber <peter.hilber@opensynergy.com>

The scmi-virtio transport will link a supplier device to the arm-scmi
device in the link_supplier() op. The transport should then save a
pointer to the linked device.

To enable this, add a transport private info to the scmi_info. (The
scmi_info is already reachable through the arm-scmi device driver_data.)

Signed-off-by: Peter Hilber <peter.hilber@opensynergy.com>
---
 drivers/firmware/arm_scmi/common.h |  2 ++
 drivers/firmware/arm_scmi/driver.c | 35 ++++++++++++++++++++++++++++++
 2 files changed, 37 insertions(+)

diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h
index a31194b3000a..7219970fc5eb 100644
--- a/drivers/firmware/arm_scmi/common.h
+++ b/drivers/firmware/arm_scmi/common.h
@@ -389,6 +389,8 @@ extern const struct scmi_desc scmi_mailbox_desc;
 extern const struct scmi_desc scmi_smc_desc;
 #endif
 
+int scmi_set_transport_info(struct device *dev, void *transport_info);
+void *scmi_get_transport_info(struct device *dev);
 void scmi_rx_callback(struct scmi_chan_info *cinfo, u32 msg_hdr);
 void scmi_free_channel(struct scmi_chan_info *cinfo, struct idr *idr, int id);
 
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 69fa97250d98..bb2de15554a9 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -138,6 +138,7 @@ struct scmi_protocol_instance {
  * @active_protocols: IDR storing device_nodes for protocols actually defined
  *		      in the DT and confirmed as implemented by fw.
  * @notify_priv: Pointer to private data structure specific to notifications.
+ * @transport_info: Transport private info
  * @node: List head
  * @users: Number of users of this instance
  */
@@ -156,6 +157,7 @@ struct scmi_info {
 	u8 *protocols_imp;
 	struct idr active_protocols;
 	void *notify_priv;
+	void *transport_info;
 	struct list_head node;
 	int users;
 };
@@ -679,6 +681,39 @@ void scmi_rx_callback(struct scmi_chan_info *cinfo, u32 msg_hdr)
 	}
 }
 
+/**
+ * scmi_set_transport_info() - Set transport private info
+ *
+ * @dev: SCMI instance device
+ * @transport_info: transport private info
+ *
+ * Return: 0 on success, otherwise error.
+ */
+int scmi_set_transport_info(struct device *dev, void *transport_info)
+{
+	struct scmi_info *info = dev_get_drvdata(dev);
+
+	if (!info)
+		return -EBADR;
+
+	info->transport_info = transport_info;
+	return 0;
+}
+
+/**
+ * scmi_get_transport_info() - Get transport private info
+ *
+ * @dev: SCMI instance device
+ *
+ * Return: transport private info on success, otherwise NULL.
+ */
+void *scmi_get_transport_info(struct device *dev)
+{
+	struct scmi_info *info = dev_get_drvdata(dev);
+
+	return info ? info->transport_info : NULL;
+}
+
 /**
  * xfer_put() - Release a transmit message
  *
-- 
2.17.1


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  parent reply	other threads:[~2021-06-11 17:07 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-11 16:59 [PATCH v4 00/16] Introduce SCMI VirtIO transport Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 01/16] firmware: arm_scmi: Fix max pending messages boundary check Cristian Marussi
2021-07-01  8:42   ` Peter Hilber
2021-07-01 10:04     ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 02/16] firmware: arm_scmi: Add support for type handling in common functions Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 03/16] firmware: arm_scmi: Add transport optional init/exit support Cristian Marussi
2021-06-14 13:29   ` Jonathan Cameron
2021-06-16  9:04     ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 04/16] firmware: arm_scmi: Introduce monotonically increasing tokens Cristian Marussi
2021-06-14 13:53   ` Jonathan Cameron
2021-06-16  9:11     ` Cristian Marussi
2021-07-01  8:42   ` Peter Hilber
2021-07-01 10:16     ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 05/16] firmware: arm_scmi: Introduce delegated xfers support Cristian Marussi
2021-07-01  8:42   ` Peter Hilber
2021-07-01 10:24     ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 06/16] firmware: arm_scmi, smccc, mailbox: Make shmem based transports optional Cristian Marussi
2021-07-01  8:42   ` Peter Hilber
2021-07-01 10:27     ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 07/16] firmware: arm_scmi: Add op to override max message # Cristian Marussi
2021-06-14 14:04   ` Jonathan Cameron
2021-06-16  9:13     ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 08/16] [RFC][REWORK] " Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 09/16] firmware: arm_scmi: Add optional link_supplier() transport op Cristian Marussi
2021-06-11 16:59 ` Cristian Marussi [this message]
2021-06-11 16:59 ` [PATCH v4 11/16] firmware: arm_scmi: Add is_scmi_protocol_device() Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 12/16] firmware: arm_scmi: Add message passing abstractions for transports Cristian Marussi
2021-06-14 14:10   ` Jonathan Cameron
2021-06-16  9:14     ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 13/16] dt-bindings: arm: Add virtio transport for SCMI Cristian Marussi
2021-06-24 19:22   ` Rob Herring
2021-07-01  8:43   ` Peter Hilber
2021-07-01 10:31     ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 14/16] firmware: arm_scmi: Add virtio transport Cristian Marussi
2021-06-14 14:23   ` Jonathan Cameron
2021-06-16 10:18     ` Cristian Marussi
2021-07-01  8:43   ` Peter Hilber
2021-07-01 10:34     ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 15/16] [RFC][REWORK] firmware: arm_scmi: make virtio-scmi use delegated xfers Cristian Marussi
2021-07-01  8:43   ` Peter Hilber
2021-07-01 11:26     ` Cristian Marussi
2021-06-11 16:59 ` [PATCH v4 16/16] firmware: arm_scmi: Add polling mode to virtio transport Cristian Marussi
2021-06-14 11:43 ` [PATCH v4 00/16] Introduce SCMI VirtIO transport Christoph Hellwig
2021-06-14 14:03   ` Cristian Marussi

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