172 lines
4.8 KiB
Diff
172 lines
4.8 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Alexander Usyskin <alexander.usyskin@intel.com>
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Date: Mon, 3 Sep 2018 14:37:27 +0300
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Subject: [PATCH] mei: bus: add more client attributes to sysfs
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Change-Id: Icfb5dfec59927718373432c8f5a1cf455bccf064
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Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
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---
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Documentation/ABI/testing/sysfs-bus-mei | 28 +++++++++++++++
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drivers/misc/mei/bus.c | 44 +++++++++++++++++++++++
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drivers/misc/mei/client.h | 48 +++++++++++++++++++++++++
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3 files changed, 120 insertions(+)
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diff --git a/Documentation/ABI/testing/sysfs-bus-mei b/Documentation/ABI/testing/sysfs-bus-mei
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index 3f8701e8fa24..f48e27bfa368 100644
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--- a/Documentation/ABI/testing/sysfs-bus-mei
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+++ b/Documentation/ABI/testing/sysfs-bus-mei
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@@ -26,3 +26,31 @@ KernelVersion: 4.3
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Contact: Tomas Winkler <tomas.winkler@intel.com>
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Description: Stores mei client protocol version
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Format: %d
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+
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+What: /sys/bus/mei/devices/.../max_conn
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+Date: Sep 2018
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+KernelVersion: 4.19
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+Contact: Tomas Winkler <tomas.winkler@intel.com>
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+Description: Stores mei client maximum number of connections
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+ Format: %d
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+
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+What: /sys/bus/mei/devices/.../fixed
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+Date: Sep 2018
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+KernelVersion: 4.19
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+Contact: Tomas Winkler <tomas.winkler@intel.com>
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+Description: Stores mei client fixed address, if any
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+ Format: %d
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+
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+What: /sys/bus/mei/devices/.../vtag
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+Date: Sep 2018
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+KernelVersion: 4.19
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+Contact: Tomas Winkler <tomas.winkler@intel.com>
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+Description: Stores mei client vm tag support status
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+ Format: %d
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+
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+What: /sys/bus/mei/devices/.../max_len
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+Date: Sep 2018
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+KernelVersion: 4.19
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+Contact: Tomas Winkler <tomas.winkler@intel.com>
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+Description: Stores mei client maximum message length
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+ Format: %d
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diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
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index 24282139a261..289663d76abc 100644
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--- a/drivers/misc/mei/bus.c
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+++ b/drivers/misc/mei/bus.c
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@@ -828,11 +828,55 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
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}
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static DEVICE_ATTR_RO(modalias);
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+static ssize_t max_conn_show(struct device *dev, struct device_attribute *a,
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+ char *buf)
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+{
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+ struct mei_cl_device *cldev = to_mei_cl_device(dev);
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+ u8 maxconn = mei_me_cl_max_conn(cldev->me_cl);
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+
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+ return scnprintf(buf, PAGE_SIZE, "%d", maxconn);
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+}
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+static DEVICE_ATTR_RO(max_conn);
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+
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+static ssize_t fixed_show(struct device *dev, struct device_attribute *a,
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+ char *buf)
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+{
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+ struct mei_cl_device *cldev = to_mei_cl_device(dev);
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+ u8 fixed = mei_me_cl_fixed(cldev->me_cl);
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+
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+ return scnprintf(buf, PAGE_SIZE, "%d", fixed);
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+}
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+static DEVICE_ATTR_RO(fixed);
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+
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+static ssize_t vtag_show(struct device *dev, struct device_attribute *a,
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+ char *buf)
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+{
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+ struct mei_cl_device *cldev = to_mei_cl_device(dev);
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+ bool vm = mei_me_cl_vm(cldev->me_cl);
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+
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+ return scnprintf(buf, PAGE_SIZE, "%d", vm);
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+}
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+static DEVICE_ATTR_RO(vtag);
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+
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+static ssize_t max_len_show(struct device *dev, struct device_attribute *a,
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+ char *buf)
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+{
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+ struct mei_cl_device *cldev = to_mei_cl_device(dev);
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+ u32 maxlen = mei_me_cl_max_len(cldev->me_cl);
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+
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+ return scnprintf(buf, PAGE_SIZE, "%u", maxlen);
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+}
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+static DEVICE_ATTR_RO(max_len);
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+
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static struct attribute *mei_cldev_attrs[] = {
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&dev_attr_name.attr,
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&dev_attr_uuid.attr,
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&dev_attr_version.attr,
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&dev_attr_modalias.attr,
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+ &dev_attr_max_conn.attr,
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+ &dev_attr_fixed.attr,
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+ &dev_attr_vtag.attr,
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+ &dev_attr_max_len.attr,
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NULL,
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};
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ATTRIBUTE_GROUPS(mei_cldev);
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diff --git a/drivers/misc/mei/client.h b/drivers/misc/mei/client.h
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index 234b75ddf427..df3f5f65fea2 100644
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--- a/drivers/misc/mei/client.h
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+++ b/drivers/misc/mei/client.h
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@@ -79,6 +79,54 @@ static inline u8 mei_me_cl_ver(const struct mei_me_client *me_cl)
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return me_cl->props.protocol_version;
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}
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+/**
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+ * mei_me_cl_max_conn - return me client max number of connections
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+ *
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+ * @me_cl: me client
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+ *
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+ * Return: me client max number of connections
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+ */
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+static inline u8 mei_me_cl_max_conn(const struct mei_me_client *me_cl)
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+{
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+ return me_cl->props.max_number_of_connections;
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+}
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+
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+/**
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+ * mei_me_cl_fixed - return me client fixed address, if any
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+ *
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+ * @me_cl: me client
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+ *
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+ * Return: me client fixed address
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+ */
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+static inline u8 mei_me_cl_fixed(const struct mei_me_client *me_cl)
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+{
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+ return me_cl->props.fixed_address;
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+}
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+
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+/**
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+ * mei_me_cl_vm - return me client vm supported status
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+ *
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+ * @me_cl: me client
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+ *
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+ * Return: true if me client supports vm tagging
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+ */
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+static inline bool mei_me_cl_vm(const struct mei_me_client *me_cl)
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+{
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+ return me_cl->props.vm_supported == 1;
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+}
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+
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+/**
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+ * mei_me_cl_max_len - return me client max msg length
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+ *
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+ * @me_cl: me client
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+ *
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+ * Return: me client max msg length
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+ */
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+static inline u32 mei_me_cl_max_len(const struct mei_me_client *me_cl)
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+{
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+ return me_cl->props.max_msg_length;
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+}
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+
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/*
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* MEI IO Functions
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*/
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--
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https://clearlinux.org
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