Added shost related sysfs attributes to get the controller's
firmware version, controlller's queue depth,
number of request & reply queues.
Also added an attribute to set & get the logging_level.
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@xxxxxxxxxxxx>
---
drivers/scsi/mpi3mr/mpi3mr_app.c | 139 +++++++++++++++++++++++++++++++
1 file changed, 139 insertions(+)
diff --git a/drivers/scsi/mpi3mr/mpi3mr_app.c b/drivers/scsi/mpi3mr/mpi3mr_app.c
index 73bb799..c9b153c 100644
--- a/drivers/scsi/mpi3mr/mpi3mr_app.c
+++ b/drivers/scsi/mpi3mr/mpi3mr_app.c
@@ -1558,6 +1558,140 @@ err_device_add:
kfree(mrioc->bsg_dev);
}
+/**
+ * version_fw_show - SysFS callback for firmware version read
+ * @dev: class device
+ * @attr: Device attributes
+ * @buf: Buffer to copy
+ *
+ * Return: snprintf() return after copying firmware version
+ */
+static ssize_t
+version_fw_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(dev);
+ struct mpi3mr_ioc *mrioc = shost_priv(shost);
+ struct mpi3mr_compimg_ver *fwver = &mrioc->facts.fw_ver;
+
+ return snprintf(buf, PAGE_SIZE, "%d.%d.%d.%d.%05d-%05d\n",
+ fwver->gen_major, fwver->gen_minor, fwver->ph_major,
+ fwver->ph_minor, fwver->cust_id, fwver->build_num);
+}
+static DEVICE_ATTR_RO(version_fw);
+
+/**
+ * fw_queue_depth_show - SysFS callback for firmware max cmds
+ * @dev: class device
+ * @attr: Device attributes
+ * @buf: Buffer to copy
+ *
+ * Return: snprintf() return after copying firmware max commands
+ */
+static ssize_t
+fw_queue_depth_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(dev);
+ struct mpi3mr_ioc *mrioc = shost_priv(shost);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", mrioc->facts.max_reqs);
+}
+static DEVICE_ATTR_RO(fw_queue_depth);
+
+/**
+ * op_req_q_count_show - SysFS callback for request queue count
+ * @dev: class device
+ * @attr: Device attributes
+ * @buf: Buffer to copy
+ *
+ * Return: snprintf() return after copying request queue count
+ */
+static ssize_t
+op_req_q_count_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(dev);
+ struct mpi3mr_ioc *mrioc = shost_priv(shost);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", mrioc->num_op_req_q);
+}
+static DEVICE_ATTR_RO(op_req_q_count);
+
+/**
+ * reply_queue_count_show - SysFS callback for reply queue count
+ * @dev: class device
+ * @attr: Device attributes
+ * @buf: Buffer to copy
+ *
+ * Return: snprintf() return after copying reply queue count
+ */
+static ssize_t
+reply_queue_count_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct Scsi_Host *shost = class_to_shost(dev);
+ struct mpi3mr_ioc *mrioc = shost_priv(shost);
+
+ return snprintf(buf, PAGE_SIZE, "%d\n", mrioc->num_op_reply_q);
+}
+
+static DEVICE_ATTR_RO(reply_queue_count);
+
+/**
+ * logging_level_show - Show controller debug level
+ * @dev: class device
+ * @attr: Device attributes
+ * @buf: Buffer to copy
+ *
+ * A sysfs 'read/write' shost attribute, to show the current
+ * debug log level used by the driver for the specific
+ * controller.
+ *
+ * Return: snprintf() return
+ */
+static ssize_t
+logging_level_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+
+{
+ struct Scsi_Host *shost = class_to_shost(dev);
+ struct mpi3mr_ioc *mrioc = shost_priv(shost);
+
+ return snprintf(buf, PAGE_SIZE, "%08xh\n", mrioc->logging_level);
+}
+
+/**
+ * logging_level_store- Change controller debug level
+ * @dev: class device
+ * @attr: Device attributes
+ * @buf: Buffer to copy
+ * @count: size of the buffer
+ *
+ * A sysfs 'read/write' shost attribute, to change the current
+ * debug log level used by the driver for the specific
+ * controller.
+ *
+ * Return: strlen() return
+ */
+static ssize_t
+logging_level_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct Scsi_Host *shost = class_to_shost(dev);
+ struct mpi3mr_ioc *mrioc = shost_priv(shost);
+ int val = 0;
+
+ if (kstrtoint(buf, 0, &val) != 0)
+ return -EINVAL;
+
+ mrioc->logging_level = val;
+ ioc_info(mrioc, "logging_level=%08xh\n", mrioc->logging_level);
+ return strlen(buf);
+}
+static DEVICE_ATTR_RW(logging_level);
+
/**
* adapter_state_show - SysFS callback for adapter state show
* @dev: class device
@@ -1591,6 +1725,11 @@ adp_state_show(struct device *dev, struct device_attribute *attr,
static DEVICE_ATTR_RO(adp_state);
static struct attribute *mpi3mr_host_attrs[] = {
+ &dev_attr_version_fw.attr,
+ &dev_attr_fw_queue_depth.attr,
+ &dev_attr_op_req_q_count.attr,
+ &dev_attr_reply_queue_count.attr,
+ &dev_attr_logging_level.attr,
&dev_attr_adp_state.attr,
NULL,
};
--
2.27.0
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