mei: add vtag support bit in client properties (2dd1e5ae) · Commits · 戴 / test

Documentation/ABI/testing/sysfs-bus-mei

+7 −0

Original line number	Diff line number	Diff line
		@@ -41,6 +41,13 @@ Contact: Tomas Winkler <tomas.winkler@intel.com>
		Description: Stores mei client fixed address, if any
		Format: %d

		What: /sys/bus/mei/devices/.../vtag
		Date: Nov 2020
		KernelVersion: 5.9
		Contact: Tomas Winkler <tomas.winkler@intel.com>
		Description: Stores mei client vtag support status
		Format: %d

		What: /sys/bus/mei/devices/.../max_len
		Date: Nov 2019
		KernelVersion: 5.5

+11 −0

Original line number	Diff line number	Diff line
		@@ -810,6 +810,16 @@ static ssize_t fixed_show(struct device dev, struct device_attribute a,
		}
		static DEVICE_ATTR_RO(fixed);

		static ssize_t vtag_show(struct device dev, struct device_attribute a,
		char *buf)
		{
		struct mei_cl_device *cldev = to_mei_cl_device(dev);
		bool vt = mei_me_cl_vt(cldev->me_cl);

		return sprintf(buf, "%d", vt);
		}
		static DEVICE_ATTR_RO(vtag);

		static ssize_t max_len_show(struct device dev, struct device_attribute a,
		char *buf)
		{
		@@ -827,6 +837,7 @@ static struct attribute *mei_cldev_attrs[] = {
		&dev_attr_modalias.attr,
		&dev_attr_max_conn.attr,
		&dev_attr_fixed.attr,
		&dev_attr_vtag.attr,
		&dev_attr_max_len.attr,
		NULL,
		};

+12 −0

Original line number	Diff line number	Diff line
		@@ -93,6 +93,18 @@ static inline u8 mei_me_cl_fixed(const struct mei_me_client *me_cl)
		return me_cl->props.fixed_address;
		}

		/**
		* mei_me_cl_vt - return me client vtag supported status
		*
		* @me_cl: me client
		*
		* Return: true if me client supports vt tagging
		*/
		static inline bool mei_me_cl_vt(const struct mei_me_client *me_cl)
		{
		return me_cl->props.vt_supported == 1;
		}

		/**
		* mei_me_cl_max_len - return me client max msg length
		*

+4 −3

Original line number	Diff line number	Diff line
		@@ -27,7 +27,7 @@ static int mei_dbgfs_meclients_show(struct seq_file m, void unused)

		down_read(&dev->me_clients_rwsem);

		seq_puts(m, " \|id\|fix\| UUID \|con\|msg len\|sb\|refc\|\n");
		seq_puts(m, " \|id\|fix\| UUID \|con\|msg len\|sb\|refc\|vt\|\n");

		/* if the driver is not enabled the list won't be consistent */
		if (dev->dev_state != MEI_DEV_ENABLED)
		@@ -37,14 +37,15 @@ static int mei_dbgfs_meclients_show(struct seq_file m, void unused)
		if (!mei_me_cl_get(me_cl))
		continue;

		seq_printf(m, "%2d\|%2d\|%3d\|%pUl\|%3d\|%7d\|%2d\|%4d\|\n",
		seq_printf(m, "%2d\|%2d\|%3d\|%pUl\|%3d\|%7d\|%2d\|%4d\|%2d\|\n",
		i++, me_cl->client_id,
		me_cl->props.fixed_address,
		&me_cl->props.protocol_name,
		me_cl->props.max_number_of_connections,
		me_cl->props.max_msg_length,
		me_cl->props.single_recv_buf,
		kref_read(&me_cl->refcnt));
		kref_read(&me_cl->refcnt),
		me_cl->props.vt_supported);
		mei_me_cl_put(me_cl);
		}

+14 −1

Original line number	Diff line number	Diff line
		@@ -314,13 +314,26 @@ struct hbm_host_enum_response {
		u8 valid_addresses[32];
		} __packed;

		/**
		* struct mei_client_properties - mei client properties
		*
		* @protocol_name: guid of the client
		* @protocol_version: client protocol version
		* @max_number_of_connections: number of possible connections.
		* @fixed_address: fixed me address (0 if the client is dynamic)
		* @single_recv_buf: 1 if all connections share a single receive buffer.
		* @vt_supported: the client support vtag
		* @reserved: reserved
		* @max_msg_length: MTU of the client
		*/
		struct mei_client_properties {
		uuid_le protocol_name;
		u8 protocol_version;
		u8 max_number_of_connections;
		u8 fixed_address;
		u8 single_recv_buf:1;
		u8 reserved:7;
		u8 vt_supported:1;
		u8 reserved:6;
		u32 max_msg_length;
		} __packed;