summaryrefslogtreecommitdiff
path: root/drivers/misc
diff options
context:
space:
mode:
authorAlexander Usyskin <alexander.usyskin@intel.com>2019-11-16 17:21:36 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-11-16 14:58:54 +0300
commit64498695dd800bcb494d96b94f99356ece91ea90 (patch)
tree494f44da13d7837a9f1abd66db5ca70709f554c9 /drivers/misc
parent87ff16007cff64a36ef31f50d45b69211d88da1d (diff)
downloadlinux-64498695dd800bcb494d96b94f99356ece91ea90.tar.xz
mei: bus: add more client attributes to sysfs
Export more client attributes via sysfs that are usually obtained upon connection. In some cases, for example a monitoring application may wish to know the attributes without actually performing the connection. Added attributes: max number of connections, fixed address, max message length. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20191116142136.17535-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/mei/bus.c33
-rw-r--r--drivers/misc/mei/client.h36
2 files changed, 69 insertions, 0 deletions
diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index 53bb394ccba6..a0a495c95e3c 100644
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -791,11 +791,44 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
}
static DEVICE_ATTR_RO(modalias);
+static ssize_t max_conn_show(struct device *dev, struct device_attribute *a,
+ char *buf)
+{
+ struct mei_cl_device *cldev = to_mei_cl_device(dev);
+ u8 maxconn = mei_me_cl_max_conn(cldev->me_cl);
+
+ return scnprintf(buf, PAGE_SIZE, "%d", maxconn);
+}
+static DEVICE_ATTR_RO(max_conn);
+
+static ssize_t fixed_show(struct device *dev, struct device_attribute *a,
+ char *buf)
+{
+ struct mei_cl_device *cldev = to_mei_cl_device(dev);
+ u8 fixed = mei_me_cl_fixed(cldev->me_cl);
+
+ return scnprintf(buf, PAGE_SIZE, "%d", fixed);
+}
+static DEVICE_ATTR_RO(fixed);
+
+static ssize_t max_len_show(struct device *dev, struct device_attribute *a,
+ char *buf)
+{
+ struct mei_cl_device *cldev = to_mei_cl_device(dev);
+ u32 maxlen = mei_me_cl_max_len(cldev->me_cl);
+
+ return scnprintf(buf, PAGE_SIZE, "%u", maxlen);
+}
+static DEVICE_ATTR_RO(max_len);
+
static struct attribute *mei_cldev_attrs[] = {
&dev_attr_name.attr,
&dev_attr_uuid.attr,
&dev_attr_version.attr,
&dev_attr_modalias.attr,
+ &dev_attr_max_conn.attr,
+ &dev_attr_fixed.attr,
+ &dev_attr_max_len.attr,
NULL,
};
ATTRIBUTE_GROUPS(mei_cldev);
diff --git a/drivers/misc/mei/client.h b/drivers/misc/mei/client.h
index c1f9e810cf81..2f8954def591 100644
--- a/drivers/misc/mei/client.h
+++ b/drivers/misc/mei/client.h
@@ -69,6 +69,42 @@ static inline u8 mei_me_cl_ver(const struct mei_me_client *me_cl)
return me_cl->props.protocol_version;
}
+/**
+ * mei_me_cl_max_conn - return me client max number of connections
+ *
+ * @me_cl: me client
+ *
+ * Return: me client max number of connections
+ */
+static inline u8 mei_me_cl_max_conn(const struct mei_me_client *me_cl)
+{
+ return me_cl->props.max_number_of_connections;
+}
+
+/**
+ * mei_me_cl_fixed - return me client fixed address, if any
+ *
+ * @me_cl: me client
+ *
+ * Return: me client fixed address
+ */
+static inline u8 mei_me_cl_fixed(const struct mei_me_client *me_cl)
+{
+ return me_cl->props.fixed_address;
+}
+
+/**
+ * mei_me_cl_max_len - return me client max msg length
+ *
+ * @me_cl: me client
+ *
+ * Return: me client max msg length
+ */
+static inline u32 mei_me_cl_max_len(const struct mei_me_client *me_cl)
+{
+ return me_cl->props.max_msg_length;
+}
+
/*
* MEI IO Functions
*/