[mirror_ubuntu-artful-kernel.git] / drivers / s390 / scsi / zfcp_sysfs.c

/*
 * zfcp device driver
 *
 * sysfs attributes.
 *
 * Copyright IBM Corporation 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_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",
		 atomic_read(&unit->status));
ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
		 (atomic_read(&unit->status) &
		  ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
		 (atomic_read(&unit->status) &
		  ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_shared, "%d\n",
		 (atomic_read(&unit->status) &
		  ZFCP_STATUS_UNIT_SHARED) != 0);
ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_readonly, "%d\n",
		 (atomic_read(&unit->status) &
		  ZFCP_STATUS_UNIT_READONLY) != 0);

#define ZFCP_SYSFS_FAILED(_feat_def, _feat, _adapter, _mod_id, _reopen_id)     \
static ssize_t zfcp_sysfs_##_feat##_failed_show(struct device *dev,	       \
						struct device_attribute *attr, \
						char *buf)		       \
{									       \
	struct _feat_def *_feat = container_of(dev, struct _feat_def, dev);    \
									       \
	if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_ERP_FAILED)       \
		return sprintf(buf, "1\n");				       \
	else								       \
		return sprintf(buf, "0\n");				       \
}									       \
static ssize_t zfcp_sysfs_##_feat##_failed_store(struct device *dev,	       \
						 struct device_attribute *attr,\
						 const char *buf, size_t count)\
{									       \
	struct _feat_def *_feat = container_of(dev, struct _feat_def, dev);    \
	unsigned long val;						       \
	int retval = 0;							       \
									       \
	if (!(_feat && get_device(&_feat->dev)))			       \
		return -EBUSY;						       \
									       \
	if (strict_strtoul(buf, 0, &val) || val != 0) {			       \
		retval = -EINVAL;					       \
		goto out;						       \
	}								       \
									       \
	zfcp_erp_modify_##_feat##_status(_feat, _mod_id, NULL,		       \
					 ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);\
	zfcp_erp_##_feat##_reopen(_feat, ZFCP_STATUS_COMMON_ERP_FAILED,	       \
				  _reopen_id, NULL);			       \
	zfcp_erp_wait(_adapter);					       \
out:									       \
	put_device(&_feat->dev);					       \
	return retval ? retval : (ssize_t) count;			       \
}									       \
static ZFCP_DEV_ATTR(_feat, failed, S_IWUSR | S_IRUGO,			       \
		     zfcp_sysfs_##_feat##_failed_show,			       \
		     zfcp_sysfs_##_feat##_failed_store);

ZFCP_SYSFS_FAILED(zfcp_port, port, port->adapter, "sypfai1", "sypfai2");
ZFCP_SYSFS_FAILED(zfcp_unit, unit, unit->port->adapter, "syufai1", "syufai2");

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

	zfcp_erp_modify_adapter_status(adapter, "syafai1", NULL,
				       ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
	zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
				"syafai2", NULL);
	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);

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

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

	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", NULL);
	zfcp_device_unregister(&port->dev, &zfcp_sysfs_port_attrs);
 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);
	struct zfcp_unit *unit;
	u64 fcp_lun;
	int retval = -EINVAL;

	if (!(port && get_device(&port->dev)))
		return -EBUSY;

	if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
		goto out;

	unit = zfcp_unit_enqueue(port, fcp_lun);
	if (IS_ERR(unit))
		goto out;
	else
		retval = 0;

	zfcp_erp_unit_reopen(unit, 0, "syuas_1", NULL);
	zfcp_erp_wait(unit->port->adapter);
	flush_work(&unit->scsi_work);
out:
	put_device(&port->dev);
	return retval ? retval : (ssize_t) 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);
	struct zfcp_unit *unit;
	u64 fcp_lun;
	int retval = -EINVAL;

	if (!(port && get_device(&port->dev)))
		return -EBUSY;

	if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
		goto out;

	unit = zfcp_get_unit_by_lun(port, fcp_lun);
	if (!unit)
		goto out;
	else
		retval = 0;

	/* wait for possible timeout during SCSI probe */
	flush_work(&unit->scsi_work);

	write_lock_irq(&port->unit_list_lock);
	list_del(&unit->list);
	write_unlock_irq(&port->unit_list_lock);

	put_device(&unit->dev);

	zfcp_erp_unit_shutdown(unit, 0, "syurs_1", NULL);
	zfcp_device_unregister(&unit->dev, &zfcp_sysfs_unit_attrs);
out:
	put_device(&port->dev);
	return retval ? retval : (ssize_t) 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
};

/**
 * zfcp_sysfs_port_attrs - sysfs attributes for all other ports
 */
struct attribute_group zfcp_sysfs_port_attrs = {
	.attrs = zfcp_port_attrs,
};

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
};

struct attribute_group zfcp_sysfs_unit_attrs = {
	.attrs = zfcp_unit_attrs,
};

#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_unit *unit = sdev->hostdata;			\
	struct zfcp_latencies *lat = &unit->latencies;			\
	struct zfcp_adapter *adapter = unit->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_unit *unit = sdev->hostdata;			\
	struct zfcp_latencies *lat = &unit->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_unit *unit = sdev->hostdata;			 \
									 \
	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(&unit->port->adapter->ccw_device->dev));
ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
		      (unsigned long long) unit->port->wwpn);
ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n",
		      (unsigned long long) unit->fcp_lun);

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	*
615f59e0	6	* Copyright IBM Corporation 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
de3dc572 SS	30	#define ZFCP_DEFINE_A_ATTR(_name, _format, _value) \
	31	static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
	32	struct device_attribute *at,\
	33	char *buf) \
	34	{ \
	35	struct ccw_device *cdev = to_ccwdev(dev); \
	36	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev); \
	37	int i; \
	38	\
	39	if (!adapter) \
	40	return -ENODEV; \
	41	\
	42	i = sprintf(buf, _format, _value); \
	43	zfcp_ccw_adapter_put(adapter); \
	44	return i; \
	45	} \
	46	static ZFCP_DEV_ATTR(adapter, _name, S_IRUGO, \
	47	zfcp_sysfs_adapter_##_name##_show, NULL);
	48
	49	ZFCP_DEFINE_A_ATTR(status, "0x%08x\n", atomic_read(&adapter->status));
	50	ZFCP_DEFINE_A_ATTR(peer_wwnn, "0x%016llx\n",
	51	(unsigned long long) adapter->peer_wwnn);
	52	ZFCP_DEFINE_A_ATTR(peer_wwpn, "0x%016llx\n",
	53	(unsigned long long) adapter->peer_wwpn);
	54	ZFCP_DEFINE_A_ATTR(peer_d_id, "0x%06x\n", adapter->peer_d_id);
	55	ZFCP_DEFINE_A_ATTR(card_version, "0x%04x\n", adapter->hydra_version);
	56	ZFCP_DEFINE_A_ATTR(lic_version, "0x%08x\n", adapter->fsf_lic_version);
	57	ZFCP_DEFINE_A_ATTR(hardware_version, "0x%08x\n", adapter->hardware_version);
	58	ZFCP_DEFINE_A_ATTR(in_recovery, "%d\n", (atomic_read(&adapter->status) &
	59	ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
60221920 SS	60
	61	ZFCP_DEFINE_ATTR(zfcp_port, port, status, "0x%08x\n",
	62	atomic_read(&port->status));
	63	ZFCP_DEFINE_ATTR(zfcp_port, port, in_recovery, "%d\n",
	64	(atomic_read(&port->status) &
	65	ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
	66	ZFCP_DEFINE_ATTR(zfcp_port, port, access_denied, "%d\n",
	67	(atomic_read(&port->status) &
	68	ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
	69
	70	ZFCP_DEFINE_ATTR(zfcp_unit, unit, status, "0x%08x\n",
	71	atomic_read(&unit->status));
	72	ZFCP_DEFINE_ATTR(zfcp_unit, unit, in_recovery, "%d\n",
	73	(atomic_read(&unit->status) &
	74	ZFCP_STATUS_COMMON_ERP_INUSE) != 0);
	75	ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_denied, "%d\n",
	76	(atomic_read(&unit->status) &
	77	ZFCP_STATUS_COMMON_ACCESS_DENIED) != 0);
	78	ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_shared, "%d\n",
	79	(atomic_read(&unit->status) &
	80	ZFCP_STATUS_UNIT_SHARED) != 0);
	81	ZFCP_DEFINE_ATTR(zfcp_unit, unit, access_readonly, "%d\n",
	82	(atomic_read(&unit->status) &
	83	ZFCP_STATUS_UNIT_READONLY) != 0);
	84
	85	#define ZFCP_SYSFS_FAILED(_feat_def, _feat, _adapter, _mod_id, _reopen_id) \
	86	static ssize_t zfcp_sysfs_##_feat##_failed_show(struct device *dev, \
	87	struct device_attribute *attr, \
	88	char *buf) \
	89	{ \
615f59e0	90	struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \
60221920 SS	91	\
	92	if (atomic_read(&_feat->status) & ZFCP_STATUS_COMMON_ERP_FAILED) \
	93	return sprintf(buf, "1\n"); \
	94	else \
	95	return sprintf(buf, "0\n"); \
	96	} \
	97	static ssize_t zfcp_sysfs_##_feat##_failed_store(struct device *dev, \
	98	struct device_attribute *attr,\
	99	const char *buf, size_t count)\
	100	{ \
615f59e0	101	struct _feat_def *_feat = container_of(dev, struct _feat_def, dev); \
60221920 SS	102	unsigned long val; \
	103	int retval = 0; \
	104	\
615f59e0	105	if (!(_feat && get_device(&_feat->dev))) \
6b183334	106	return -EBUSY; \
60221920 SS	107	\
	108	if (strict_strtoul(buf, 0, &val) \|\| val != 0) { \
	109	retval = -EINVAL; \
	110	goto out; \
	111	} \
	112	\
	113	zfcp_erp_modify_##_feat##_status(_feat, _mod_id, NULL, \
	114	ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);\
	115	zfcp_erp_##_feat##_reopen(_feat, ZFCP_STATUS_COMMON_ERP_FAILED, \
	116	_reopen_id, NULL); \
	117	zfcp_erp_wait(_adapter); \
	118	out: \
615f59e0	119	put_device(&_feat->dev); \
60221920 SS	120	return retval ? retval : (ssize_t) count; \
	121	} \
	122	static ZFCP_DEV_ATTR(_feat, failed, S_IWUSR \| S_IRUGO, \
	123	zfcp_sysfs_##_feat##_failed_show, \
	124	zfcp_sysfs_##_feat##_failed_store);
	125
5ffd51a5 SS	126	ZFCP_SYSFS_FAILED(zfcp_port, port, port->adapter, "sypfai1", "sypfai2");
5ffd51a5 SS	127	ZFCP_SYSFS_FAILED(zfcp_unit, unit, unit->port->adapter, "syufai1", "syufai2");
60221920	128
de3dc572 SS	129	static ssize_t zfcp_sysfs_adapter_failed_show(struct device *dev,
	130	struct device_attribute *attr,
	131	char *buf)
	132	{
	133	struct ccw_device *cdev = to_ccwdev(dev);
	134	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
	135	int i;
	136
	137	if (!adapter)
	138	return -ENODEV;
	139
	140	if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
	141	i = sprintf(buf, "1\n");
	142	else
	143	i = sprintf(buf, "0\n");
	144
	145	zfcp_ccw_adapter_put(adapter);
	146	return i;
	147	}
	148
	149	static ssize_t zfcp_sysfs_adapter_failed_store(struct device *dev,
	150	struct device_attribute *attr,
	151	const char *buf, size_t count)
	152	{
	153	struct ccw_device *cdev = to_ccwdev(dev);
	154	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
	155	unsigned long val;
	156	int retval = 0;
	157
	158	if (!adapter)
	159	return -ENODEV;
	160
de3dc572 SS	161	if (strict_strtoul(buf, 0, &val) \|\| val != 0) {
	162	retval = -EINVAL;
	163	goto out;
	164	}
	165
	166	zfcp_erp_modify_adapter_status(adapter, "syafai1", NULL,
	167	ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
	168	zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
	169	"syafai2", NULL);
	170	zfcp_erp_wait(adapter);
	171	out:
	172	zfcp_ccw_adapter_put(adapter);
	173	return retval ? retval : (ssize_t) count;
	174	}
	175	static ZFCP_DEV_ATTR(adapter, failed, S_IWUSR \| S_IRUGO,
	176	zfcp_sysfs_adapter_failed_show,
	177	zfcp_sysfs_adapter_failed_store);
	178
60221920 SS	179	static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
	180	struct device_attribute *attr,
	181	const char *buf, size_t count)
	182	{
de3dc572 SS	183	struct ccw_device *cdev = to_ccwdev(dev);
de3dc572 SS	184	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
60221920	185
de3dc572 SS	186	if (!adapter)
	187	return -ENODEV;
	188
9eae07ef SS	189	/* sync the user-space- with the kernel-invocation of scan_work */
	190	queue_work(adapter->work_queue, &adapter->scan_work);
	191	flush_work(&adapter->scan_work);
de3dc572	192	zfcp_ccw_adapter_put(adapter);
6b183334	193
9eae07ef	194	return (ssize_t) count;
60221920 SS	195	}
	196	static ZFCP_DEV_ATTR(adapter, port_rescan, S_IWUSR, NULL,
	197	zfcp_sysfs_port_rescan_store);
	198
	199	static ssize_t zfcp_sysfs_port_remove_store(struct device *dev,
	200	struct device_attribute *attr,
	201	const char *buf, size_t count)
	202	{
de3dc572 SS	203	struct ccw_device *cdev = to_ccwdev(dev);
de3dc572 SS	204	struct zfcp_adapter *adapter = zfcp_ccw_adapter_by_cdev(cdev);
60221920	205	struct zfcp_port *port;
7ba58c9c	206	u64 wwpn;
6b183334	207	int retval = -EINVAL;
60221920	208
de3dc572 SS	209	if (!adapter)
	210	return -ENODEV;
	211
6b183334	212	if (strict_strtoull(buf, 0, (unsigned long long *) &wwpn))
60221920	213	goto out;
60221920	214
60221920	215	port = zfcp_get_port_by_wwpn(adapter, wwpn);
6b183334	216	if (!port)
60221920	217	goto out;
6b183334 SS	218	else
6b183334 SS	219	retval = 0;
f3450c7b SS	220
	221	write_lock_irq(&adapter->port_list_lock);
	222	list_del(&port->list);
	223	write_unlock_irq(&adapter->port_list_lock);
	224
615f59e0	225	put_device(&port->dev);
f3450c7b	226
5ffd51a5	227	zfcp_erp_port_shutdown(port, 0, "syprs_1", NULL);
615f59e0	228	zfcp_device_unregister(&port->dev, &zfcp_sysfs_port_attrs);
60221920	229	out:
de3dc572	230	zfcp_ccw_adapter_put(adapter);
60221920 SS	231	return retval ? retval : (ssize_t) count;
	232	}
	233	static ZFCP_DEV_ATTR(adapter, port_remove, S_IWUSR, NULL,
	234	zfcp_sysfs_port_remove_store);
	235
	236	static struct attribute *zfcp_adapter_attrs[] = {
	237	&dev_attr_adapter_failed.attr,
	238	&dev_attr_adapter_in_recovery.attr,
	239	&dev_attr_adapter_port_remove.attr,
	240	&dev_attr_adapter_port_rescan.attr,
	241	&dev_attr_adapter_peer_wwnn.attr,
	242	&dev_attr_adapter_peer_wwpn.attr,
	243	&dev_attr_adapter_peer_d_id.attr,
	244	&dev_attr_adapter_card_version.attr,
	245	&dev_attr_adapter_lic_version.attr,
	246	&dev_attr_adapter_status.attr,
	247	&dev_attr_adapter_hardware_version.attr,
	248	NULL
	249	};
	250
	251	struct attribute_group zfcp_sysfs_adapter_attrs = {
	252	.attrs = zfcp_adapter_attrs,
	253	};
	254
	255	static ssize_t zfcp_sysfs_unit_add_store(struct device *dev,
	256	struct device_attribute *attr,
	257	const char *buf, size_t count)
	258	{
615f59e0	259	struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
60221920	260	struct zfcp_unit *unit;
7ba58c9c	261	u64 fcp_lun;
60221920 SS	262	int retval = -EINVAL;
60221920 SS	263
615f59e0	264	if (!(port && get_device(&port->dev)))
6b183334	265	return -EBUSY;
60221920	266
7ba58c9c	267	if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
60221920 SS	268	goto out;
	269
	270	unit = zfcp_unit_enqueue(port, fcp_lun);
	271	if (IS_ERR(unit))
	272	goto out;
6b183334 SS	273	else
6b183334 SS	274	retval = 0;
60221920	275
5ffd51a5	276	zfcp_erp_unit_reopen(unit, 0, "syuas_1", NULL);
60221920	277	zfcp_erp_wait(unit->port->adapter);
9e820afd	278	flush_work(&unit->scsi_work);
60221920	279	out:
615f59e0	280	put_device(&port->dev);
60221920 SS	281	return retval ? retval : (ssize_t) count;
	282	}
	283	static DEVICE_ATTR(unit_add, S_IWUSR, NULL, zfcp_sysfs_unit_add_store);
	284
	285	static ssize_t zfcp_sysfs_unit_remove_store(struct device *dev,
	286	struct device_attribute *attr,
	287	const char *buf, size_t count)
	288	{
615f59e0	289	struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
60221920	290	struct zfcp_unit *unit;
7ba58c9c	291	u64 fcp_lun;
6b183334	292	int retval = -EINVAL;
60221920	293
615f59e0	294	if (!(port && get_device(&port->dev)))
6b183334	295	return -EBUSY;
60221920	296
6b183334	297	if (strict_strtoull(buf, 0, (unsigned long long *) &fcp_lun))
60221920	298	goto out;
60221920	299
60221920	300	unit = zfcp_get_unit_by_lun(port, fcp_lun);
6b183334	301	if (!unit)
60221920	302	goto out;
6b183334 SS	303	else
6b183334 SS	304	retval = 0;
60221920	305
ecf0c772 SS	306	/* wait for possible timeout during SCSI probe */
	307	flush_work(&unit->scsi_work);
	308
f3450c7b SS	309	write_lock_irq(&port->unit_list_lock);
	310	list_del(&unit->list);
	311	write_unlock_irq(&port->unit_list_lock);
ecf0c772	312
615f59e0	313	put_device(&unit->dev);
ecf0c772	314
f3450c7b	315	zfcp_erp_unit_shutdown(unit, 0, "syurs_1", NULL);
615f59e0	316	zfcp_device_unregister(&unit->dev, &zfcp_sysfs_unit_attrs);
60221920	317	out:
615f59e0	318	put_device(&port->dev);
60221920 SS	319	return retval ? retval : (ssize_t) count;
	320	}
	321	static DEVICE_ATTR(unit_remove, S_IWUSR, NULL, zfcp_sysfs_unit_remove_store);
	322
5ab944f9	323	static struct attribute *zfcp_port_attrs[] = {
60221920 SS	324	&dev_attr_unit_add.attr,
	325	&dev_attr_unit_remove.attr,
	326	&dev_attr_port_failed.attr,
	327	&dev_attr_port_in_recovery.attr,
	328	&dev_attr_port_status.attr,
	329	&dev_attr_port_access_denied.attr,
	330	NULL
	331	};
	332
	333	/**
	334	* zfcp_sysfs_port_attrs - sysfs attributes for all other ports
	335	*/
	336	struct attribute_group zfcp_sysfs_port_attrs = {
5ab944f9	337	.attrs = zfcp_port_attrs,
60221920 SS	338	};
	339
	340	static struct attribute *zfcp_unit_attrs[] = {
	341	&dev_attr_unit_failed.attr,
	342	&dev_attr_unit_in_recovery.attr,
	343	&dev_attr_unit_status.attr,
	344	&dev_attr_unit_access_denied.attr,
	345	&dev_attr_unit_access_shared.attr,
	346	&dev_attr_unit_access_readonly.attr,
	347	NULL
	348	};
	349
	350	struct attribute_group zfcp_sysfs_unit_attrs = {
	351	.attrs = zfcp_unit_attrs,
	352	};
	353
	354	#define ZFCP_DEFINE_LATENCY_ATTR(_name) \
	355	static ssize_t \
	356	zfcp_sysfs_unit_##_name##_latency_show(struct device *dev, \
	357	struct device_attribute *attr, \
	358	char *buf) { \
	359	struct scsi_device *sdev = to_scsi_device(dev); \
	360	struct zfcp_unit *unit = sdev->hostdata; \
	361	struct zfcp_latencies *lat = &unit->latencies; \
	362	struct zfcp_adapter *adapter = unit->port->adapter; \
60221920 SS	363	unsigned long long fsum, fmin, fmax, csum, cmin, cmax, cc; \
60221920 SS	364	\
49f0f01c	365	spin_lock_bh(&lat->lock); \
60221920 SS	366	fsum = lat->_name.fabric.sum * adapter->timer_ticks; \
	367	fmin = lat->_name.fabric.min * adapter->timer_ticks; \
	368	fmax = lat->_name.fabric.max * adapter->timer_ticks; \
	369	csum = lat->_name.channel.sum * adapter->timer_ticks; \
	370	cmin = lat->_name.channel.min * adapter->timer_ticks; \
	371	cmax = lat->_name.channel.max * adapter->timer_ticks; \
	372	cc = lat->_name.counter; \
49f0f01c	373	spin_unlock_bh(&lat->lock); \
60221920 SS	374	\
	375	do_div(fsum, 1000); \
	376	do_div(fmin, 1000); \
	377	do_div(fmax, 1000); \
	378	do_div(csum, 1000); \
	379	do_div(cmin, 1000); \
	380	do_div(cmax, 1000); \
	381	\
	382	return sprintf(buf, "%llu %llu %llu %llu %llu %llu %llu\n", \
	383	fmin, fmax, fsum, cmin, cmax, csum, cc); \
	384	} \
	385	static ssize_t \
	386	zfcp_sysfs_unit_##_name##_latency_store(struct device *dev, \
	387	struct device_attribute *attr, \
	388	const char *buf, size_t count) \
	389	{ \
	390	struct scsi_device *sdev = to_scsi_device(dev); \
	391	struct zfcp_unit *unit = sdev->hostdata; \
	392	struct zfcp_latencies *lat = &unit->latencies; \
	393	unsigned long flags; \
	394	\
	395	spin_lock_irqsave(&lat->lock, flags); \
	396	lat->_name.fabric.sum = 0; \
	397	lat->_name.fabric.min = 0xFFFFFFFF; \
	398	lat->_name.fabric.max = 0; \
	399	lat->_name.channel.sum = 0; \
	400	lat->_name.channel.min = 0xFFFFFFFF; \
	401	lat->_name.channel.max = 0; \
	402	lat->_name.counter = 0; \
	403	spin_unlock_irqrestore(&lat->lock, flags); \
	404	\
	405	return (ssize_t) count; \
	406	} \
	407	static DEVICE_ATTR(_name##_latency, S_IWUSR \| S_IRUGO, \
	408	zfcp_sysfs_unit_##_name##_latency_show, \
	409	zfcp_sysfs_unit_##_name##_latency_store);
	410
	411	ZFCP_DEFINE_LATENCY_ATTR(read);
	412	ZFCP_DEFINE_LATENCY_ATTR(write);
	413	ZFCP_DEFINE_LATENCY_ATTR(cmd);
	414
	415	#define ZFCP_DEFINE_SCSI_ATTR(_name, _format, _value) \
	416	static ssize_t zfcp_sysfs_scsi_##_name##_show(struct device *dev, \
	417	struct device_attribute *attr,\
	418	char *buf) \
	419	{ \
	420	struct scsi_device *sdev = to_scsi_device(dev); \
	421	struct zfcp_unit *unit = sdev->hostdata; \
	422	\
	423	return sprintf(buf, _format, _value); \
	424	} \
	425	static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_scsi_##_name##_show, NULL);
	426
	427	ZFCP_DEFINE_SCSI_ATTR(hba_id, "%s\n",
b9d3aed7	428	dev_name(&unit->port->adapter->ccw_device->dev));
7ba58c9c SS	429	ZFCP_DEFINE_SCSI_ATTR(wwpn, "0x%016llx\n",
	430	(unsigned long long) unit->port->wwpn);
	431	ZFCP_DEFINE_SCSI_ATTR(fcp_lun, "0x%016llx\n",
	432	(unsigned long long) unit->fcp_lun);
60221920 SS	433
	434	struct device_attribute *zfcp_sysfs_sdev_attrs[] = {
	435	&dev_attr_fcp_lun,
	436	&dev_attr_wwpn,
	437	&dev_attr_hba_id,
	438	&dev_attr_read_latency,
	439	&dev_attr_write_latency,
	440	&dev_attr_cmd_latency,
	441	NULL
	442	};
	443
	444	static ssize_t zfcp_sysfs_adapter_util_show(struct device *dev,
	445	struct device_attribute *attr,
	446	char *buf)
	447	{
	448	struct Scsi_Host *scsi_host = dev_to_shost(dev);
	449	struct fsf_qtcb_bottom_port *qtcb_port;
	450	struct zfcp_adapter *adapter;
	451	int retval;
	452
	453	adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
	454	if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
	455	return -EOPNOTSUPP;
	456
	457	qtcb_port = kzalloc(sizeof(struct fsf_qtcb_bottom_port), GFP_KERNEL);
	458	if (!qtcb_port)
	459	return -ENOMEM;
	460
564e1c86	461	retval = zfcp_fsf_exchange_port_data_sync(adapter->qdio, qtcb_port);
60221920 SS	462	if (!retval)
	463	retval = sprintf(buf, "%u %u %u\n", qtcb_port->cp_util,
	464	qtcb_port->cb_util, qtcb_port->a_util);
	465	kfree(qtcb_port);
	466	return retval;
	467	}
	468	static DEVICE_ATTR(utilization, S_IRUGO, zfcp_sysfs_adapter_util_show, NULL);
	469
	470	static int zfcp_sysfs_adapter_ex_config(struct device *dev,
	471	struct fsf_statistics_info *stat_inf)
	472	{
	473	struct Scsi_Host *scsi_host = dev_to_shost(dev);
	474	struct fsf_qtcb_bottom_config *qtcb_config;
	475	struct zfcp_adapter *adapter;
	476	int retval;
	477
	478	adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
	479	if (!(adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA))
	480	return -EOPNOTSUPP;
	481
	482	qtcb_config = kzalloc(sizeof(struct fsf_qtcb_bottom_config),
	483	GFP_KERNEL);
	484	if (!qtcb_config)
	485	return -ENOMEM;
	486
564e1c86	487	retval = zfcp_fsf_exchange_config_data_sync(adapter->qdio, qtcb_config);
60221920 SS	488	if (!retval)
	489	*stat_inf = qtcb_config->stat_info;
	490
	491	kfree(qtcb_config);
	492	return retval;
	493	}
	494
	495	#define ZFCP_SHOST_ATTR(_name, _format, _arg...) \
	496	static ssize_t zfcp_sysfs_adapter_##_name##_show(struct device *dev, \
	497	struct device_attribute *attr,\
	498	char *buf) \
	499	{ \
	500	struct fsf_statistics_info stat_info; \
	501	int retval; \
	502	\
	503	retval = zfcp_sysfs_adapter_ex_config(dev, &stat_info); \
	504	if (retval) \
	505	return retval; \
	506	\
	507	return sprintf(buf, _format, ## _arg); \
	508	} \
	509	static DEVICE_ATTR(_name, S_IRUGO, zfcp_sysfs_adapter_##_name##_show, NULL);
	510
	511	ZFCP_SHOST_ATTR(requests, "%llu %llu %llu\n",
	512	(unsigned long long) stat_info.input_req,
	513	(unsigned long long) stat_info.output_req,
	514	(unsigned long long) stat_info.control_req);
	515
	516	ZFCP_SHOST_ATTR(megabytes, "%llu %llu\n",
	517	(unsigned long long) stat_info.input_mb,
	518	(unsigned long long) stat_info.output_mb);
	519
	520	ZFCP_SHOST_ATTR(seconds_active, "%llu\n",
	521	(unsigned long long) stat_info.seconds_act);
	522
2450d3e7 SR	523	static ssize_t zfcp_sysfs_adapter_q_full_show(struct device *dev,
	524	struct device_attribute *attr,
	525	char *buf)
	526	{
	527	struct Scsi_Host *scsi_host = class_to_shost(dev);
564e1c86 SS	528	struct zfcp_qdio *qdio =
564e1c86 SS	529	((struct zfcp_adapter *) scsi_host->hostdata[0])->qdio;
acf7b861 CS	530	u64 util;
acf7b861 CS	531
564e1c86 SS	532	spin_lock_bh(&qdio->stat_lock);
	533	util = qdio->req_q_util;
	534	spin_unlock_bh(&qdio->stat_lock);
2450d3e7	535
564e1c86	536	return sprintf(buf, "%d %llu\n", atomic_read(&qdio->req_q_full),
acf7b861	537	(unsigned long long)util);
2450d3e7 SR	538	}
	539	static DEVICE_ATTR(queue_full, S_IRUGO, zfcp_sysfs_adapter_q_full_show, NULL);
	540
60221920 SS	541	struct device_attribute *zfcp_sysfs_shost_attrs[] = {
	542	&dev_attr_utilization,
	543	&dev_attr_requests,
	544	&dev_attr_megabytes,
	545	&dev_attr_seconds_active,
2450d3e7	546	&dev_attr_queue_full,
60221920 SS	547	NULL
60221920 SS	548	};