[deliverable/linux.git] / drivers / s390 / scsi / zfcp_sysfs.c

/*
 * zfcp device driver
 *
 * sysfs attributes.
 *
 * Copyright IBM Corp. 2008, 2010
 */

#define KMSG_COMPONENT "zfcp"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt

#include <linux/slab.h>
#include "zfcp_ext.h"

#define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \
struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\
							    _show, _store)
#define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value)	       \
static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev,	       \
						   struct device_attribute *at,\
						   char *buf)		       \
{									       \
	struct _feat_def *_feat = container_of(dev, struct _feat_def, dev);    \
									       \
	return sprintf(buf, _format, _value);				       \
}									       \
static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO,				       \
		     zfcp_sysfs_##_feat##_##_name##_show, NULL);

#define ZFCP_DEFINE_ATTR_CONST(_feat, _name, _format, _value)		       \
static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev,	       \
						   struct device_attribute *at,\
						   char *buf)		       \
{									       \
	return sprintf(buf, _format, _value);				       \
}									       \
static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO,				       \
		     zfcp_sysfs_##_feat##_##_name##_show, NULL);

#define ZFCP_DEFINE_A_ATTR(_name, _format, _value)			     \
static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev,	     \
						 struct device_attribute *at,\
						 char *buf)		     \
{									     \
	struct ccw_device *cdev = to_ccwdev(dev);			     \
	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);	     \
	int i;								     \
									     \
	if (!adapter)							     \
		return -ENODEV;						     \
									     \
	i = sprintf(buf, _format, _value);				     \
	zfcp_ccw_adapter_put(adapter);					     \
	return i;							     \
}									     \
static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO,				     \
		     zfcp_sysfs_adapter_##_name##_show, NULL);

ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n",
		   (unsigned long long) adapter->peer_wwnn);
ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n",
		   (unsigned long long) adapter->peer_wwpn);
ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version);
ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) &
					 ZFCP_STATUS_COMMON_ERP_INUSE) != 0);

ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
		 atomic_read(&port->status));
ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
		 (atomic_read(&port->status) &
		  ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
ZFCP_DEFINE_ATTR(zfcp_port, port, access_denied, "%d\n",
		 (atomic_read(&port->status) &
		  ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);

ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
		 zfcp_unit_sdev_status(unit));
ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
		 (zfcp_unit_sdev_status(unit) &
		  ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
		 (zfcp_unit_sdev_status(unit) &
		  ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0);
ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0);

static ssize_t zfcp_sysfs_port_failed_show(struct device *dev,
					   struct device_attribute *attr,
					   char *buf)
{
	struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);

	if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
		return sprintf(buf, "1\n");

	return sprintf(buf, "0\n");
}

static ssize_t zfcp_sysfs_port_failed_store(struct device *dev,
					    struct device_attribute *attr,
					    const char *buf, size_t count)
{
	struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
	unsigned long val;

	if (kstrtoul(buf, 0, &val) || val != 0)
		return -EINVAL;

	zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING);
	zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2");
	zfcp_erp_wait(port->adapter);

	return count;
}
static ZFCP_DEV_ATTR(port, failed, S_IWUSR | S_IRUGO,
		     zfcp_sysfs_port_failed_show,
		     zfcp_sysfs_port_failed_store);

static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev,
					   struct device_attribute *attr,
					   char *buf)
{
	struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
	struct scsi_device *sdev;
	unsigned int status, failed = 1;

	sdev = zfcp_unit_sdev(unit);
	if (sdev) {
		status = atomic_read(&sdev_to_zfcp(sdev)->status);
		failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
		scsi_device_put(sdev);
	}

	return sprintf(buf, "%d\n", failed);
}

static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev,
					    struct device_attribute *attr,
					    const char *buf, size_t count)
{
	struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
	unsigned long val;
	struct scsi_device *sdev;

	if (kstrtoul(buf, 0, &val) || val != 0)
		return -EINVAL;

	sdev = zfcp_unit_sdev(unit);
	if (sdev) {
		zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
		zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
				    "syufai2");
		zfcp_erp_wait(unit->port->adapter);
	} else
		zfcp_unit_scsi_scan(unit);

	return count;
}
static ZFCP_DEV_ATTR(unit, failed, S_IWUSR | S_IRUGO,
		     zfcp_sysfs_unit_failed_show,
		     zfcp_sysfs_unit_failed_store);

static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev,
					      struct device_attribute *attr,
					      char *buf)
{
	struct ccw_device *cdev = to_ccwdev(dev);
	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
	int i;

	if (!adapter)
		return -ENODEV;

	if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
		i = sprintf(buf, "1\n");
	else
		i = sprintf(buf, "0\n");

	zfcp_ccw_adapter_put(adapter);
	return i;
}

static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev,
					       struct device_attribute *attr,
					       const char *buf, size_t count)
{
	struct ccw_device *cdev = to_ccwdev(dev);
	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
	unsigned long val;
	int retval = 0;

	if (!adapter)
		return -ENODEV;

	if (kstrtoul(buf, 0, &val) || val != 0) {
		retval = -EINVAL;
		goto out;
	}

	zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING);
	zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
				"syafai2");
	zfcp_erp_wait(adapter);
out:
	zfcp_ccw_adapter_put(adapter);
	return retval ? retval : (ssize_t) count;
}
static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR | S_IRUGO,
		     zfcp_sysfs_adapter_failed_show,
		     zfcp_sysfs_adapter_failed_store);

static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
					    struct device_attribute *attr,
					    const char *buf, size_t count)
{
	struct ccw_device *cdev = to_ccwdev(dev);
	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);

	if (!adapter)
		return -ENODEV;

	/* sync the user-space- with the kernel-invocation of scan_work */
	queue_work(adapter->work_queue, &adapter->scan_work);
	flush_work(&adapter->scan_work);
	zfcp_ccw_adapter_put(adapter);

	return (ssize_t) count;
}
static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
		     zfcp_sysfs_port_rescan_store);

DEFINE_MUTEX(zfcp_sysfs_port_units_mutex);

static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
					    struct device_attribute *attr,
					    const char *buf, size_t count)
{
	struct ccw_device *cdev = to_ccwdev(dev);
	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
	struct zfcp_port *port;
	u64 wwpn;
	int retval = -EINVAL;

	if (!adapter)
		return -ENODEV;

	if (kstrtoull(buf, 0, (unsigned long long *) &wwpn))
		goto out;

	port = zfcp_get_port_by_wwpn(adapter, wwpn);
	if (!port)
		goto out;
	else
		retval = 0;

	mutex_lock(&zfcp_sysfs_port_units_mutex);
	if (atomic_read(&port->units) > 0) {
		retval = -EBUSY;
		mutex_unlock(&zfcp_sysfs_port_units_mutex);
		goto out;
	}
	/* port is about to be removed, so no more unit_add */
	atomic_set(&port->units, -1);
	mutex_unlock(&zfcp_sysfs_port_units_mutex);

	write_lock_irq(&adapter->port_list_lock);
	list_del(&port->list);
	write_unlock_irq(&adapter->port_list_lock);

	put_device(&port->dev);

	zfcp_erp_port_shutdown(port, 0, "syprs_1");
	device_unregister(&port->dev);
 out:
	zfcp_ccw_adapter_put(adapter);
	return retval ? retval : (ssize_t) count;
}
static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
		     zfcp_sysfs_port_remove_store);

static struct attribute *zfcp_adapter_attrs[] = {
	&dev_attr_adapter_failed.attr,
	&dev_attr_adapter_in_recovery.attr,
	&dev_attr_adapter_port_remove.attr,
	&dev_attr_adapter_port_rescan.attr,
	&dev_attr_adapter_peer_wwnn.attr,
	&dev_attr_adapter_peer_wwpn.attr,
	&dev_attr_adapter_peer_d_id.attr,
	&dev_attr_adapter_card_version.attr,
	&dev_attr_adapter_lic_version.attr,
	&dev_attr_adapter_status.attr,
	&dev_attr_adapter_hardware_version.attr,
	NULL
};

struct attribute_group zfcp_sysfs_adapter_attrs = {
	.attrs = zfcp_adapter_attrs,
};

static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
					 struct device_attribute *attr,
					 const char *buf, size_t count)
{
	struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
	u64 fcp_lun;
	int retval;

	if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
		return -EINVAL;

	retval = zfcp_unit_add(port, fcp_lun);
	if (retval)
		return retval;

	return count;
}
static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);

static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
					    struct device_attribute *attr,
					    const char *buf, size_t count)
{
	struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
	u64 fcp_lun;

	if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
		return -EINVAL;

	if (zfcp_unit_remove(port, fcp_lun))
		return -EINVAL;

	return count;
}
static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);

static struct attribute *zfcp_port_attrs[] = {
	&dev_attr_unit_add.attr,
	&dev_attr_unit_remove.attr,
	&dev_attr_port_failed.attr,
	&dev_attr_port_in_recovery.attr,
	&dev_attr_port_status.attr,
	&dev_attr_port_access_denied.attr,
	NULL
};
static struct attribute_group zfcp_port_attr_group = {
	.attrs = zfcp_port_attrs,
};
const struct attribute_group *zfcp_port_attr_groups[] = {
	&zfcp_port_attr_group,
	NULL,
};

static struct attribute *zfcp_unit_attrs[] = {
	&dev_attr_unit_failed.attr,
	&dev_attr_unit_in_recovery.attr,
	&dev_attr_unit_status.attr,
	&dev_attr_unit_access_denied.attr,
	&dev_attr_unit_access_shared.attr,
	&dev_attr_unit_access_readonly.attr,
	NULL
};
static struct attribute_group zfcp_unit_attr_group = {
	.attrs = zfcp_unit_attrs,
};
const struct attribute_group *zfcp_unit_attr_groups[] = {
	&zfcp_unit_attr_group,
	NULL,
};

#define ZFCP_DEFINE_LATENCY_ATTR(_name) 				\
static ssize_t								\
zfcp_sysfs_unit_##_name##_latency_show(struct device *dev,		\
				       struct device_attribute *attr,	\
				       char *buf) {			\
	struct scsi_device *sdev = to_scsi_device(dev);			\
	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);		\
	struct zfcp_latencies *lat = &zfcp_sdev->latencies;		\
	struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;	\
	unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc;	\
									\
	spin_lock_bh(&lat->lock);					\
	fsum = lat->_name.fabric.sum * adapter->timer_ticks;		\
	fmin = lat->_name.fabric.min * adapter->timer_ticks;		\
	fmax = lat->_name.fabric.max * adapter->timer_ticks;		\
	csum = lat->_name.channel.sum * adapter->timer_ticks;		\
	cmin = lat->_name.channel.min * adapter->timer_ticks;		\
	cmax = lat->_name.channel.max * adapter->timer_ticks;		\
	cc  = lat->_name.counter;					\
	spin_unlock_bh(&lat->lock);					\
									\
	do_div(fsum, 1000);						\
	do_div(fmin, 1000);						\
	do_div(fmax, 1000);						\
	do_div(csum, 1000);						\
	do_div(cmin, 1000);						\
	do_div(cmax, 1000);						\
									\
	return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n",	\
		       fmin, fmax, fsum, cmin, cmax, csum, cc); 	\
}									\
static ssize_t								\
zfcp_sysfs_unit_##_name##_latency_store(struct device *dev,		\
					struct device_attribute *attr,	\
					const char *buf, size_t count)	\
{									\
	struct scsi_device *sdev = to_scsi_device(dev);			\
	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);		\
	struct zfcp_latencies *lat = &zfcp_sdev->latencies;		\
	unsigned long flags;						\
									\
	spin_lock_irqsave(&lat->lock, flags);				\
	lat->_name.fabric.sum = 0;					\
	lat->_name.fabric.min = 0xFFFFFFFF;				\
	lat->_name.fabric.max = 0;					\
	lat->_name.channel.sum = 0;					\
	lat->_name.channel.min = 0xFFFFFFFF;				\
	lat->_name.channel.max = 0;					\
	lat->_name.counter = 0;						\
	spin_unlock_irqrestore(&lat->lock, flags);			\
									\
	return (ssize_t) count;						\
}									\
static DEVICE_ATTR(_name##_latency, S_IWUSR | S_IRUGO,			\
		   zfcp_sysfs_unit_##_name##_latency_show,		\
		   zfcp_sysfs_unit_##_name##_latency_store);

ZFCP_DEFINE_LATENCY_ATTR(read);
ZFCP_DEFINE_LATENCY_ATTR(write);
ZFCP_DEFINE_LATENCY_ATTR(cmd);

#define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value)			\
static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev,	\
					      struct device_attribute *attr,\
					      char *buf)                 \
{                                                                        \
	struct scsi_device *sdev = to_scsi_device(dev);			 \
	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);		 \
	struct zfcp_port *port = zfcp_sdev->port;			 \
									 \
	return sprintf(buf, _format, _value);                            \
}                                                                        \
static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);

ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
		      dev_name(&port->adapter->ccw_device->dev));
ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
		      (unsigned long long) port->wwpn);

static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
					    struct device_attribute *attr,
					    char *buf)
{
	struct scsi_device *sdev = to_scsi_device(dev);

	return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
}
static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);

struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
	&dev_attr_fcp_lun,
	&dev_attr_wwpn,
	&dev_attr_hba_id,
	&dev_attr_read_latency,
	&dev_attr_write_latency,
	&dev_attr_cmd_latency,
	NULL
};

static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
					    struct device_attribute *attr,
					    char *buf)
{
	struct Scsi_Host *scsi_host = dev_to_shost(dev);
	struct fsf_qtcb_bottom_port *qtcb_port;
	struct zfcp_adapter *adapter;
	int retval;

	adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
	if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
		return -EOPNOTSUPP;

	qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
	if (!qtcb_port)
		return -ENOMEM;

	retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
	if (!retval)
		retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
				 qtcb_port->cb_util, qtcb_port->a_util);
	kfree(qtcb_port);
	return retval;
}
static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);

static int zfcp_sysfs_adapter_ex_config(struct device *dev,
					struct fsf_statistics_info *stat_inf)
{
	struct Scsi_Host *scsi_host = dev_to_shost(dev);
	struct fsf_qtcb_bottom_config *qtcb_config;
	struct zfcp_adapter *adapter;
	int retval;

	adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
	if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
		return -EOPNOTSUPP;

	qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
			      GFP_KERNEL);
	if (!qtcb_config)
		return -ENOMEM;

	retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
	if (!retval)
		*stat_inf = qtcb_config->stat_info;

	kfree(qtcb_config);
	return retval;
}

#define ZFCP_SHOST_ATTR(_name, _format, _arg...)			\
static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev,	\
						 struct device_attribute *attr,\
						 char *buf)		\
{									\
	struct fsf_statistics_info stat_info;				\
	int retval;							\
									\
	retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info);		\
	if (retval)							\
		return retval;						\
									\
	return sprintf(buf, _format, ## _arg);				\
}									\
static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);

ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
		(unsigned long long) stat_info.input_req,
		(unsigned long long) stat_info.output_req,
		(unsigned long long) stat_info.control_req);

ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
		(unsigned long long) stat_info.input_mb,
		(unsigned long long) stat_info.output_mb);

ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
		(unsigned long long) stat_info.seconds_act);

static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
					      struct device_attribute *attr,
					      char *buf)
{
	struct Scsi_Host *scsi_host = class_to_shost(dev);
	struct zfcp_qdio *qdio =
		((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
	u64 util;

	spin_lock_bh(&qdio->stat_lock);
	util = qdio->req_q_util;
	spin_unlock_bh(&qdio->stat_lock);

	return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
		       (unsigned long long)util);
}
static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);

struct device_attribute *zfcp_sysfs_shost_attrs[] = {
	&dev_attr_utilization,
	&dev_attr_requests,
	&dev_attr_megabytes,
	&dev_attr_seconds_active,
	&dev_attr_queue_full,
	NULL
};
Commit	Line	Data
60221920 SS	1	/*
	2	* zfcp device driver
	3	*
	4	* sysfs attributes.
	5	*
a53c8fab	6	* Copyright IBM Corp. 2008, 2010
60221920 SS	7	*/
60221920 SS	8
ecf39d42 CS	9	#define KMSG_COMPONENT "zfcp"
	10	#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
	11
5a0e3ad6	12	#include <linux/slab.h>
60221920 SS	13	#include "zfcp_ext.h"
	14
	15	#define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \
	16	struct device_attribute dev_attr_##_feat##_##_name = __ATTR(_name, _mode,\
	17	_show, _store)
	18	#define ZFCP_DEFINE_ATTR(_feat_def, _feat, _name, _format, _value) \
	19	static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \
	20	struct device_attribute *at,\
	21	char *buf) \
	22	{ \
615f59e0	23	struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \
60221920 SS	24	\
	25	return sprintf(buf, _format, _value); \
	26	} \
	27	static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
	28	zfcp_sysfs_##_feat##_##_name##_show, NULL);
	29
b5dc3c48 MP	30	#define ZFCP_DEFINE_ATTR_CONST(_feat, _name, _format, _value) \
	31	static ssize_t zfcp_sysfs_##_feat##_##_name##_show(struct device *dev, \
	32	struct device_attribute *at,\
	33	char *buf) \
	34	{ \
	35	return sprintf(buf, _format, _value); \
	36	} \
	37	static ZFCP_DEV_ATTR(_feat, _name, S_IRUGO, \
	38	zfcp_sysfs_##_feat##_##_name##_show, NULL);
	39
de3dc572 SS	40	#define ZFCP_DEFINE_A_ATTR(_name, _format, _value) \
	41	static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
	42	struct device_attribute *at,\
	43	char *buf) \
	44	{ \
	45	struct ccw_device *cdev = to_ccwdev(dev); \
	46	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); \
	47	int i; \
	48	\
	49	if (!adapter) \
	50	return -ENODEV; \
	51	\
	52	i = sprintf(buf, _format, _value); \
	53	zfcp_ccw_adapter_put(adapter); \
	54	return i; \
	55	} \
	56	static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \
	57	zfcp_sysfs_adapter_##_name##_show, NULL);
	58
	59	ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
	60	ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n",
	61	(unsigned long long) adapter->peer_wwnn);
	62	ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n",
	63	(unsigned long long) adapter->peer_wwpn);
	64	ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
	65	ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
	66	ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
	67	ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version);
	68	ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) &
	69	ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
60221920 SS	70
	71	ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
	72	atomic_read(&port->status));
	73	ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
	74	(atomic_read(&port->status) &
	75	ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
	76	ZFCP_DEFINE_ATTR(zfcp_port, port, access_denied, "%d\n",
	77	(atomic_read(&port->status) &
	78	ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
	79
	80	ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
b62a8d9b	81	zfcp_unit_sdev_status(unit));
60221920	82	ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
b62a8d9b	83	(zfcp_unit_sdev_status(unit) &
60221920 SS	84	ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
60221920 SS	85	ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
b62a8d9b	86	(zfcp_unit_sdev_status(unit) &
60221920	87	ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
b5dc3c48 MP	88	ZFCP_DEFINE_ATTR_CONST(unit, access_shared, "%d\n", 0);
b5dc3c48 MP	89	ZFCP_DEFINE_ATTR_CONST(unit, access_readonly, "%d\n", 0);
60221920	90
e4b9857f CS	91	static ssize_t zfcp_sysfs_port_failed_show(struct device *dev,
	92	struct device_attribute *attr,
	93	char *buf)
	94	{
	95	struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
60221920	96
e4b9857f CS	97	if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
	98	return sprintf(buf, "1\n");
	99
	100	return sprintf(buf, "0\n");
	101	}
	102
	103	static ssize_t zfcp_sysfs_port_failed_store(struct device *dev,
	104	struct device_attribute *attr,
	105	const char *buf, size_t count)
	106	{
	107	struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
	108	unsigned long val;
	109
ee732ea8	110	if (kstrtoul(buf, 0, &val) \|\| val != 0)
e4b9857f CS	111	return -EINVAL;
e4b9857f CS	112
edaed859	113	zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING);
ea4a3a6a	114	zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2");
e4b9857f CS	115	zfcp_erp_wait(port->adapter);
	116
	117	return count;
	118	}
	119	static ZFCP_DEV_ATTR(port, failed, S_IWUSR \| S_IRUGO,
	120	zfcp_sysfs_port_failed_show,
	121	zfcp_sysfs_port_failed_store);
	122
	123	static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev,
	124	struct device_attribute *attr,
	125	char *buf)
	126	{
	127	struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
b62a8d9b CS	128	struct scsi_device *sdev;
	129	unsigned int status, failed = 1;
	130
	131	sdev = zfcp_unit_sdev(unit);
	132	if (sdev) {
	133	status = atomic_read(&sdev_to_zfcp(sdev)->status);
	134	failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
	135	scsi_device_put(sdev);
	136	}
e4b9857f	137
b62a8d9b	138	return sprintf(buf, "%d\n", failed);
e4b9857f CS	139	}
	140
	141	static ssize_t zfcp_sysfs_unit_failed_store(struct device *dev,
	142	struct device_attribute *attr,
	143	const char *buf, size_t count)
	144	{
	145	struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
	146	unsigned long val;
b62a8d9b	147	struct scsi_device *sdev;
e4b9857f	148
ee732ea8	149	if (kstrtoul(buf, 0, &val) \|\| val != 0)
e4b9857f CS	150	return -EINVAL;
e4b9857f CS	151
b62a8d9b CS	152	sdev = zfcp_unit_sdev(unit);
b62a8d9b CS	153	if (sdev) {
edaed859	154	zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
b62a8d9b	155	zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
ea4a3a6a	156	"syufai2");
b62a8d9b CS	157	zfcp_erp_wait(unit->port->adapter);
	158	} else
	159	zfcp_unit_scsi_scan(unit);
e4b9857f CS	160
	161	return count;
	162	}
	163	static ZFCP_DEV_ATTR(unit, failed, S_IWUSR \| S_IRUGO,
	164	zfcp_sysfs_unit_failed_show,
	165	zfcp_sysfs_unit_failed_store);
60221920	166
de3dc572 SS	167	static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev,
	168	struct device_attribute *attr,
	169	char *buf)
	170	{
	171	struct ccw_device *cdev = to_ccwdev(dev);
	172	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
	173	int i;
	174
	175	if (!adapter)
	176	return -ENODEV;
	177
	178	if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
	179	i = sprintf(buf, "1\n");
	180	else
	181	i = sprintf(buf, "0\n");
	182
	183	zfcp_ccw_adapter_put(adapter);
	184	return i;
	185	}
	186
	187	static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev,
	188	struct device_attribute *attr,
	189	const char *buf, size_t count)
	190	{
	191	struct ccw_device *cdev = to_ccwdev(dev);
	192	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
	193	unsigned long val;
	194	int retval = 0;
	195
	196	if (!adapter)
	197	return -ENODEV;
	198
ee732ea8	199	if (kstrtoul(buf, 0, &val) \|\| val != 0) {
de3dc572 SS	200	retval = -EINVAL;
	201	goto out;
	202	}
	203
edaed859	204	zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_RUNNING);
de3dc572	205	zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
ea4a3a6a	206	"syafai2");
de3dc572 SS	207	zfcp_erp_wait(adapter);
	208	out:
	209	zfcp_ccw_adapter_put(adapter);
	210	return retval ? retval : (ssize_t) count;
	211	}
	212	static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR \| S_IRUGO,
	213	zfcp_sysfs_adapter_failed_show,
	214	zfcp_sysfs_adapter_failed_store);
	215
60221920 SS	216	static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
	217	struct device_attribute *attr,
	218	const char *buf, size_t count)
	219	{
de3dc572 SS	220	struct ccw_device *cdev = to_ccwdev(dev);
de3dc572 SS	221	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
60221920	222
de3dc572 SS	223	if (!adapter)
	224	return -ENODEV;
	225
9eae07ef SS	226	/* sync the user-space- with the kernel-invocation of scan_work */
	227	queue_work(adapter->work_queue, &adapter->scan_work);
	228	flush_work(&adapter->scan_work);
de3dc572	229	zfcp_ccw_adapter_put(adapter);
6b183334	230
9eae07ef	231	return (ssize_t) count;
60221920 SS	232	}
	233	static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
	234	zfcp_sysfs_port_rescan_store);
	235
d99b601b SM	236	DEFINE_MUTEX(zfcp_sysfs_port_units_mutex);
d99b601b SM	237
60221920 SS	238	static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
	239	struct device_attribute *attr,
	240	const char *buf, size_t count)
	241	{
de3dc572 SS	242	struct ccw_device *cdev = to_ccwdev(dev);
de3dc572 SS	243	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
60221920	244	struct zfcp_port *port;
7ba58c9c	245	u64 wwpn;
6b183334	246	int retval = -EINVAL;
60221920	247
de3dc572 SS	248	if (!adapter)
	249	return -ENODEV;
	250
ee732ea8	251	if (kstrtoull(buf, 0, (unsigned long long *) &wwpn))
60221920	252	goto out;
60221920	253
60221920	254	port = zfcp_get_port_by_wwpn(adapter, wwpn);
6b183334	255	if (!port)
60221920	256	goto out;
6b183334 SS	257	else
6b183334 SS	258	retval = 0;
f3450c7b	259
d99b601b SM	260	mutex_lock(&zfcp_sysfs_port_units_mutex);
	261	if (atomic_read(&port->units) > 0) {
	262	retval = -EBUSY;
	263	mutex_unlock(&zfcp_sysfs_port_units_mutex);
	264	goto out;
	265	}
	266	/* port is about to be removed, so no more unit_add */
	267	atomic_set(&port->units, -1);
	268	mutex_unlock(&zfcp_sysfs_port_units_mutex);
	269
f3450c7b SS	270	write_lock_irq(&adapter->port_list_lock);
	271	list_del(&port->list);
	272	write_unlock_irq(&adapter->port_list_lock);
	273
615f59e0	274	put_device(&port->dev);
f3450c7b	275
ea4a3a6a	276	zfcp_erp_port_shutdown(port, 0, "syprs_1");
83d4e1c3	277	device_unregister(&port->dev);
60221920	278	out:
de3dc572	279	zfcp_ccw_adapter_put(adapter);
60221920 SS	280	return retval ? retval : (ssize_t) count;
	281	}
	282	static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
	283	zfcp_sysfs_port_remove_store);
	284
	285	static struct attribute *zfcp_adapter_attrs[] = {
	286	&dev_attr_adapter_failed.attr,
	287	&dev_attr_adapter_in_recovery.attr,
	288	&dev_attr_adapter_port_remove.attr,
	289	&dev_attr_adapter_port_rescan.attr,
	290	&dev_attr_adapter_peer_wwnn.attr,
	291	&dev_attr_adapter_peer_wwpn.attr,
	292	&dev_attr_adapter_peer_d_id.attr,
	293	&dev_attr_adapter_card_version.attr,
	294	&dev_attr_adapter_lic_version.attr,
	295	&dev_attr_adapter_status.attr,
	296	&dev_attr_adapter_hardware_version.attr,
	297	NULL
	298	};
	299
	300	struct attribute_group zfcp_sysfs_adapter_attrs = {
	301	.attrs = zfcp_adapter_attrs,
	302	};
	303
	304	static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
	305	struct device_attribute *attr,
	306	const char *buf, size_t count)
	307	{
615f59e0	308	struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
7ba58c9c	309	u64 fcp_lun;
d99b601b	310	int retval;
60221920	311
ee732ea8	312	if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
1daa4eb5	313	return -EINVAL;
60221920	314
d99b601b SM	315	retval = zfcp_unit_add(port, fcp_lun);
	316	if (retval)
	317	return retval;
60221920	318
1daa4eb5	319	return count;
60221920 SS	320	}
	321	static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
	322
	323	static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
	324	struct device_attribute *attr,
	325	const char *buf, size_t count)
	326	{
615f59e0	327	struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
7ba58c9c	328	u64 fcp_lun;
60221920	329
ee732ea8	330	if (kstrtoull(buf, 0, (unsigned long long *) &fcp_lun))
1daa4eb5	331	return -EINVAL;
60221920	332
1daa4eb5 CS	333	if (zfcp_unit_remove(port, fcp_lun))
1daa4eb5 CS	334	return -EINVAL;
ecf0c772	335
1daa4eb5	336	return count;
60221920 SS	337	}
	338	static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
	339
5ab944f9	340	static struct attribute *zfcp_port_attrs[] = {
60221920 SS	341	&dev_attr_unit_add.attr,
	342	&dev_attr_unit_remove.attr,
	343	&dev_attr_port_failed.attr,
	344	&dev_attr_port_in_recovery.attr,
	345	&dev_attr_port_status.attr,
	346	&dev_attr_port_access_denied.attr,
	347	NULL
	348	};
83d4e1c3	349	static struct attribute_group zfcp_port_attr_group = {
5ab944f9	350	.attrs = zfcp_port_attrs,
60221920	351	};
83d4e1c3 SO	352	const struct attribute_group *zfcp_port_attr_groups[] = {
	353	&zfcp_port_attr_group,
	354	NULL,
	355	};
60221920 SS	356
	357	static struct attribute *zfcp_unit_attrs[] = {
	358	&dev_attr_unit_failed.attr,
	359	&dev_attr_unit_in_recovery.attr,
	360	&dev_attr_unit_status.attr,
	361	&dev_attr_unit_access_denied.attr,
b5dc3c48 MP	362	&dev_attr_unit_access_shared.attr,
b5dc3c48 MP	363	&dev_attr_unit_access_readonly.attr,
60221920 SS	364	NULL
60221920 SS	365	};
86bdf218	366	static struct attribute_group zfcp_unit_attr_group = {
60221920 SS	367	.attrs = zfcp_unit_attrs,
60221920 SS	368	};
86bdf218 SO	369	const struct attribute_group *zfcp_unit_attr_groups[] = {
	370	&zfcp_unit_attr_group,
	371	NULL,
	372	};
60221920 SS	373
	374	#define ZFCP_DEFINE_LATENCY_ATTR(_name) \
	375	static ssize_t \
	376	zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \
	377	struct device_attribute *attr, \
	378	char *buf) { \
	379	struct scsi_device *sdev = to_scsi_device(dev); \
b62a8d9b CS	380	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
	381	struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
	382	struct zfcp_adapter *adapter = zfcp_sdev->port->adapter; \
60221920 SS	383	unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \
60221920 SS	384	\
49f0f01c	385	spin_lock_bh(&lat->lock); \
60221920 SS	386	fsum = lat->_name.fabric.sum * adapter->timer_ticks; \
	387	fmin = lat->_name.fabric.min * adapter->timer_ticks; \
	388	fmax = lat->_name.fabric.max * adapter->timer_ticks; \
	389	csum = lat->_name.channel.sum * adapter->timer_ticks; \
	390	cmin = lat->_name.channel.min * adapter->timer_ticks; \
	391	cmax = lat->_name.channel.max * adapter->timer_ticks; \
	392	cc = lat->_name.counter; \
49f0f01c	393	spin_unlock_bh(&lat->lock); \
60221920 SS	394	\
	395	do_div(fsum, 1000); \
	396	do_div(fmin, 1000); \
	397	do_div(fmax, 1000); \
	398	do_div(csum, 1000); \
	399	do_div(cmin, 1000); \
	400	do_div(cmax, 1000); \
	401	\
	402	return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \
	403	fmin, fmax, fsum, cmin, cmax, csum, cc); \
	404	} \
	405	static ssize_t \
	406	zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \
	407	struct device_attribute *attr, \
	408	const char *buf, size_t count) \
	409	{ \
	410	struct scsi_device *sdev = to_scsi_device(dev); \
b62a8d9b CS	411	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
b62a8d9b CS	412	struct zfcp_latencies *lat = &zfcp_sdev->latencies; \
60221920 SS	413	unsigned long flags; \
	414	\
	415	spin_lock_irqsave(&lat->lock, flags); \
	416	lat->_name.fabric.sum = 0; \
	417	lat->_name.fabric.min = 0xFFFFFFFF; \
	418	lat->_name.fabric.max = 0; \
	419	lat->_name.channel.sum = 0; \
	420	lat->_name.channel.min = 0xFFFFFFFF; \
	421	lat->_name.channel.max = 0; \
	422	lat->_name.counter = 0; \
	423	spin_unlock_irqrestore(&lat->lock, flags); \
	424	\
	425	return (ssize_t) count; \
	426	} \
	427	static DEVICE_ATTR(_name##_latency, S_IWUSR \| S_IRUGO, \
	428	zfcp_sysfs_unit_##_name##_latency_show, \
	429	zfcp_sysfs_unit_##_name##_latency_store);
	430
	431	ZFCP_DEFINE_LATENCY_ATTR(read);
	432	ZFCP_DEFINE_LATENCY_ATTR(write);
	433	ZFCP_DEFINE_LATENCY_ATTR(cmd);
	434
	435	#define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \
	436	static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \
	437	struct device_attribute *attr,\
	438	char *buf) \
	439	{ \
b62a8d9b CS	440	struct scsi_device *sdev = to_scsi_device(dev); \
	441	struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev); \
	442	struct zfcp_port *port = zfcp_sdev->port; \
60221920 SS	443	\
	444	return sprintf(buf, _format, _value); \
	445	} \
	446	static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
	447
	448	ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
b62a8d9b	449	dev_name(&port->adapter->ccw_device->dev));
7ba58c9c	450	ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
b62a8d9b	451	(unsigned long long) port->wwpn);
e4b9857f CS	452
	453	static ssize_t zfcp_sysfs_scsi_fcp_lun_show(struct device *dev,
	454	struct device_attribute *attr,
	455	char *buf)
	456	{
	457	struct scsi_device *sdev = to_scsi_device(dev);
e4b9857f	458
b62a8d9b	459	return sprintf(buf, "0x%016llx\n", zfcp_scsi_dev_lun(sdev));
e4b9857f CS	460	}
e4b9857f CS	461	static DEVICE_ATTR(fcp_lun, S_IRUGO, zfcp_sysfs_scsi_fcp_lun_show, NULL);
60221920 SS	462
	463	struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
	464	&dev_attr_fcp_lun,
	465	&dev_attr_wwpn,
	466	&dev_attr_hba_id,
	467	&dev_attr_read_latency,
	468	&dev_attr_write_latency,
	469	&dev_attr_cmd_latency,
	470	NULL
	471	};
	472
	473	static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
	474	struct device_attribute *attr,
	475	char *buf)
	476	{
	477	struct Scsi_Host *scsi_host = dev_to_shost(dev);
	478	struct fsf_qtcb_bottom_port *qtcb_port;
	479	struct zfcp_adapter *adapter;
	480	int retval;
	481
	482	adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
	483	if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
	484	return -EOPNOTSUPP;
	485
	486	qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
	487	if (!qtcb_port)
	488	return -ENOMEM;
	489
564e1c86	490	retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
60221920 SS	491	if (!retval)
	492	retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
	493	qtcb_port->cb_util, qtcb_port->a_util);
	494	kfree(qtcb_port);
	495	return retval;
	496	}
	497	static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
	498
	499	static int zfcp_sysfs_adapter_ex_config(struct device *dev,
	500	struct fsf_statistics_info *stat_inf)
	501	{
	502	struct Scsi_Host *scsi_host = dev_to_shost(dev);
	503	struct fsf_qtcb_bottom_config *qtcb_config;
	504	struct zfcp_adapter *adapter;
	505	int retval;
	506
	507	adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
	508	if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
	509	return -EOPNOTSUPP;
	510
	511	qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
	512	GFP_KERNEL);
	513	if (!qtcb_config)
	514	return -ENOMEM;
	515
564e1c86	516	retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
60221920 SS	517	if (!retval)
	518	*stat_inf = qtcb_config->stat_info;
	519
	520	kfree(qtcb_config);
	521	return retval;
	522	}
	523
	524	#define ZFCP_SHOST_ATTR(_name, _format, _arg...) \
	525	static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
	526	struct device_attribute *attr,\
	527	char *buf) \
	528	{ \
	529	struct fsf_statistics_info stat_info; \
	530	int retval; \
	531	\
	532	retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \
	533	if (retval) \
	534	return retval; \
	535	\
	536	return sprintf(buf, _format, ## _arg); \
	537	} \
	538	static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
	539
	540	ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
	541	(unsigned long long) stat_info.input_req,
	542	(unsigned long long) stat_info.output_req,
	543	(unsigned long long) stat_info.control_req);
	544
	545	ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
	546	(unsigned long long) stat_info.input_mb,
	547	(unsigned long long) stat_info.output_mb);
	548
	549	ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
	550	(unsigned long long) stat_info.seconds_act);
	551
2450d3e7 SR	552	static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
	553	struct device_attribute *attr,
	554	char *buf)
	555	{
	556	struct Scsi_Host *scsi_host = class_to_shost(dev);
564e1c86 SS	557	struct zfcp_qdio *qdio =
564e1c86 SS	558	((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
acf7b861 CS	559	u64 util;
acf7b861 CS	560
564e1c86 SS	561	spin_lock_bh(&qdio->stat_lock);
	562	util = qdio->req_q_util;
	563	spin_unlock_bh(&qdio->stat_lock);
2450d3e7	564
564e1c86	565	return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
acf7b861	566	(unsigned long long)util);
2450d3e7 SR	567	}
	568	static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
	569
60221920 SS	570	struct device_attribute *zfcp_sysfs_shost_attrs[] = {
	571	&dev_attr_utilization,
	572	&dev_attr_requests,
	573	&dev_attr_megabytes,
	574	&dev_attr_seconds_active,
2450d3e7	575	&dev_attr_queue_full,
60221920 SS	576	NULL
60221920 SS	577	};